GPT-3000 Repair Manual

ISSUED............... AUG. 2004

REVISED ............ REPAIR MANUAL

GPT-3000 SERIES

PULSE TOTAL STATION

TOPCON CORPORATION

Printed in Japan

This document contains proprietary and confidential information of

Topcon Corporation, and its description is protected under copyright

law and international conventions.

Any unauthorized use, duplication, reproduction, modification,

disclosure, distribution or transfer of any part of this document is

strictly prohibited.

NOTICE

Copyright © 2004 Topcon Corporation, All rights reserved.

LASER SAFETY

Laser Safety

• Distance MeasurementGPT-3000 series uses the invisible laser beam. The GPT-3000 series are manufactured and sold in accordance

with "Performance Standards for Light-Emitting Products" (FDA/BRH 21 CFR 1040) or "Radiation Safety of

Laser Products, Equipment Classification, Requirements and User’s Guide" (IEC Publication 825) provided on

the safety standard for laser beam.

As per the said standard, the GPT-3000 series is classified as "Class 1 (l) Laser Products".

• Laser pointer and Plumb Laser (Plumb laser is supplied for certain markets.)
GPT-3000 series plumb laser and laser pointer use the visible laser beam. The GPT-3000 series plumb laser and
laser pointer are manufactured and sold in accordance with "Performance Standards for Light-Emitting Prod-

ucts" (FDA/BRH 21 CFR 1040) or "Radiation Safety of Laser Products, Equipment Classification, Require-

ments and User’s Guide" (IEC Publication 825) provided on the safety standard for laser beam.

As per the said standard, the GPT-3000 series plumb laser type is classified as "Class 2 (II) Laser Products".

• Do not stare into the laser beam from apertures.

• Disassemble and repair this instrument according to the specified procedures; otherwise, the laser radiation

which exceeds the CLASS 2 may affect the human body.

CAUTION: Use of controls or adjustment or performance of procedures other than those specifiedherein may result in hazardous radiation exposure.

Labels

Symbol mark while the laser is emitting.

The following symbol mark will appear at the right side of the second line.

Symbol mark

CONTENTS

Page

LASER SAFETY

1. INTRODUCTION ........................................................................................................................... 1-11-1 Introduction ................................................................................................................................. 1-11-2 How to Use This Manual ............................................................................................................ 1-2

2. PRODUCT OUTLINE ................................................................................................................... 2-12-1 Nomenclature .............................................................................................................................. 2-12-2 Display ........................................................................................................................................ 2-3
2-3 Operating Key ............................................................................................................................. 2-42-4 Star Key Mode ............................................................................................................................ 2-72-5 Serial Signal RS-232C Connector .............................................................................................. 2-82-6 Prism Mode and Non-prism Mode ............................................................................................. 2-9
3. PRINCIPLE ..................................................................................................................................... 3-13-1 Principle of Angular Measurement ............................................................................................. 3-13-2 Principle of Distance Measurement ............................................................................................ 3-43-3 Distance Measurement System Optical Arrangement ................................................................ 3-6

4. INSPECTION .................................................................................................................................. 4-14-1 Inspection Procedure ................................................................................................................... 4-14-2 Theodolite System Accuracy Inspection .................................................................................... 4-24-3 Telescope (EDM) System Accuracy Inspection ......................................................................... 4-54-4 Error Code Table ........................................................................................................................ 4-19

5. DISASSEMBLY PROCEDURE ................................................................................................. 5-15-1 Instrument Disassembly Procedure ............................................................................................ 5-15-2 Telescope (EDM Unit) Disassembly Procedure ......................................................................... 5-175-3 Left Cover Disassembly Procedure (Bluetooth Type) ................................................................ 5-34

6. TROUBLE SHOOTING ............................................................................................................... 6-16-1 Trouble Shooting Flow Chart ..................................................................................................... 6-16-2 Trouble Shooting of Angular Measurement System Problem Unit ............................................ 6-15

7. EACH UNIT REPLACEMENT PROCEDURE ..................................................................... 7-17-1 Angular Measurement System Unit Replacement Procedure ..................................................... 7-17-2 EDM System Unit Replacement Procedure ................................................................................ 7-37-3 Other Units Replacement Procedure ........................................................................................... 7-4

8. REPAIR OUTLINE ........................................................................................................................ 8-18-1 Repair Outline ............................................................................................................................. 8-18-2 Setting and Adjustment Modes ................................................................................................... 8-2

9. ANGULAR MEASUREMENT READING SYSTEM REPAIRS ....................................... 9-19-1 How to Use the Angular Measurement System Unit Positioning Tools .................................... 9-19-2 Angular Measurement System Unit Installation and Adjustment .............................................. 9-99-3 Horizontal Angle Round Rotation Check ................................................................................... 9-23

10. PLATE SYSTEM REPAIRS ..................................................................................................... 10-110-1 Nomenclature .............................................................................................................................. 10-110-2 Angular Measurement Digital System Repairs .......................................................................... 10-210-3 Setting of Integral Time .............................................................................................................. 10-410-4 Check for Bluetooth Communication (GPT-3000W only) ......................................................... 10-6

11. TELESCOPE (EDM) SYSTEM REPAIRS ........................................................................... 11-111-1 Nomenclature .............................................................................................................................. 11-2
11-2 Nomenclature and Functions of Units ........................................................................................ 11-311-3 EDM General Adjustment .......................................................................................................... 11-411-4 Adjustment of Optical Axis on Optical Receiving Side ............................................................. 11-1811-5 Adjustment of Optical Axis on Optical Emitting Side ............................................................... 11-2111-6 Adjustment of Laser Pointer Optical Axis .................................................................................. 11-2411-7 Adjustment of Point Guide ......................................................................................................... 11-25
12. INSTALLATION OF SOFTWARE .......................................................................................... 12-112-1 How to Check Version ................................................................................................................ 12-112-2 Installation of Main Software

(New Software of PC → Old Software of Instrument) .............................................................. 12-212-3 Installation of Main Software

(New Software of Instrument → Old Software of Instrument) ................................................. 12-5

13. ADJUSTMENT MODE .............................................................................................................. 13-113-1 Normal and Reverse Collimation Vertical Zero-point Adjustment ............................................ 13-113-2 EDM Instrument Constant Input ................................................................................................. 13-3

14. APPENDICES .............................................................................................................................. 14-114-1 EDM Cable Arrangement ........................................................................................................... 14-114-2 Repair Tool List .......................................................................................................................... 14-314-3 Adhesives and Application Locations ........................................................................................ 14-414-4 Lubricants and Application Locations ........................................................................................ 14-514-5 Specifications .............................................................................................................................. 14-714-6 Precaution When Charging or Storing Batteries ......................................................................... 14-11

1. INTRODUCTION

1-1 Introduction

The GPT-3000 series has the following features as a successive model of the GPT-2000 series.

1) Small diameter distance measurement light

Because the diameter of the distance measurement light is smaller, the measurement with a pin point is

possible and no error is displayed.

2) The measured distance is extended.

Non-prism mode: GPT-2003....150m → GPT-3003....250m

* The measured distance is changed depending on the atmospheric conditions.

3) Laser pointer function

1-1 Confidential : duplication and reproduction prohibited

In addition to the light source of the distance measurement, another light source (laser pointer) is installed.

So a clear spot light is emitted. (It can be turned on/off optionally.)

1-2 How to Use This Manual

This manual describes the following points.

1) Replacement of parts :

The parts must be replaced by units (electrical, mechanical and optical units).

2) Replacement procedure of parts :

Necessary disassembly procedures and adjustments after replacement are shown with illustrations and

flow charts.

Don’t perform repairs with other parts, units or methods (procedures, tools or others) except those mentioned

in the manual and parts list. An unallowable repair not only hinders a normal repair work but also causes

another trouble.

1-2Confidential : duplication and reproduction prohibited

2. PRODUCT OUTLINE

2-1 Nomenclature

Handgrip locking screw Hand grip


Objective lens

Laser aperture

Point guide

Display unit

(Only for GPT-3002/3003/3005)

Circular level

Adjustment screw for circular level

Instrument center mark

Optical plummet telescope

Tribrach fixing lever Base

Leveling screw

Laser pointer

(Optical plummet telescope type only)

Sighting collimator

Telescope focusing knob

Battery locking lever

On-board battery BT-52QA


* The position of vertical motion clamp and Vertical tangent screw will differ depending on the market.

Telesope grip

Telescope eyepiece

* Vertical motion clamp

* Vertical tangent screw

Plate level

Display unit

Instrument center mark

Horizontal motion clamp

Power supply connector

Serial Signal connector

Horizontal tangent screw

2-2 Display

The display uses a graphic LCD which has 4 lines and 20 characters per line. In general, the upper 3 lines

indicate mainly the measured data, and the bottom line indicates the soft key function which changes with the

measuring modes.

• Example

V : 90ﾟ10'20" HR: 120ﾟ30'40" 0SET HOLD HSET P1↓

Angle measurement mode

HR: 120ﾟ30'40" HD* 65.432m VD: 12.345mMEAS MODE NP/P P1↓

Distance measurement mode


• Display marks

Display Contents Display Contents

V V-angle * EDM working

HR H-angle right m Meter unit

HL H-angle left f Feet unit/Feet and inch unit

HD Horizontal distance NP Switches non-prism mode or prism mode

VD Relative elevation Laser emitting mark

SD Slope distance

N N coordinate

E E coordinate

Z Z coordinate

V-angle : 90° 10' 20"H-angle : 120° 30' 40"

Horizontal-angle : 120° 30' 40"Horizontal distance : 65.432mRelative elevation : 12.345m

HR: 120ﾟ30'40" HD* 123.45 f VD: 12.34 fMEAS MODE NP/P P1↓

Horizontal-angle : 120° 30' 40"Horizontal distance : 123.45ftRelative elevation : 12.34ft

HR: 120ﾟ30'40" HD* 123.04.6f VD: 12.03.4fMEAS MODE NP/P P1↓

Horizontal-angle : 120° 30' 40"Horizontal distance : 123ft4in6/8inRelative elevation : 12ft3in4/8in

Feet unit Feet and inch unit

2-3 Operating Key


Key Name of Key Function

Star key

Star key mode is used for each presetting or displaying as follows.1 Contrast of the display 2 Reticle illumination 3 Back Light4 Non-prism/Prism 5 Laser pointer 6 Laser plummet7 Tilt correction 8 Point guide 9 Set audio mode

Coordinate meas. key Coordinate measurement mode

Distance meas. key Distance measurement mode

ANG Angle meas. key Angle measurement mode

MENU Menu keySwitches menu mode and normal mode. To set application measure-ments and adjust in the menu mode.

ESC Escape key

• Returning to the measurement mode or previous layer mode from themode set.

• To be DATA COLLECTION mode or LAYOUT mode directly fromthe normal measurement mode.

• It is also possible to use as Record key in normal measurement mode.To select function of Escape key, see Chapter 16 "SELECTINGMODE".

ENT Enter key Press at the end of inputting values.

POWER Power source key ON/OFF of power source

F1-F4Soft key( Function key)

Responds to the message displayed.

2-3-1 Function key (Soft key)

The Soft Key message is displayed at the bottom line of display. The functions are according to the displayed

message.

V : 94ﾟ19'00" HR: 172ﾟ02'40" --- m/f/i --- P3↓

V : 94ﾟ19'00" HR: 172ﾟ02'40" H-BZ R/L CMPS P3↓

V : 94ﾟ19'00" HR: 172ﾟ02'40" TILT REP V% P2↓


V : 94ﾟ19'00" HR: 172ﾟ02'40" OFSET S.O S/A P2↓

HR: 120ﾟ30'40" HD*[r] << m VD: mMEAS MODE NP/P P1↓

N: 123.456 m

Angle measurement mode

Coordinates measurement mode

[F1]


[F2] [F3] [F4]


Angle measurement


Page Soft key Display mark Function

1

F1 0SET Angle of Horizontal is set to 0° 00' 00"

F2 HOLD Hold the horizontal angle.

F3 HSET Sets a required horizontal angle by entering numerals.

F4 P1↓ The function of soft keys is shown on next page (P2).

2

F1 TILTSetting Tilt CorrectionIf ON, the display shows tilt correction value.

F2 REP Repetition angle measurement mode

F3 V% Vertical angle percent grade (%) mode


3

F1 H-BZ Sets the buzzer sound for every horizontal angle 90°.

F2 R/L Switches R/L rotation of horizontal angle.

F3 CMPS Switches the COMPASS ON/OFF of vertical angle.



1

F1 MEAS Start measuring.

F2 MODE Sets a measuring mode, Fine/Coarse/Tracking.

F3 NP/P Switches non-prism mode or prism mode.


2

F1 OFSET Select Off-set measurement mode.

F2 S.O Select stake out measurement mode.

F3 S/A Select set audio mode.


3F2 m/f/i Switches meter, feet or feet and inch unit.


V : 94ﾟ19'00" HR: 172ﾟ02'40" OFSET m/f/i S/A P3↓

V : 94ﾟ19'00" HR: 172ﾟ02'40" R.HT INSHT OCC P2↓

E: 34.567 m Z: 78.912 mMEAS MODE NP/P P1↓

Soft keys

Coordinate measurement mode


1

F1 MEAS Start measuring.

F2 MODE Sets a measuring mode, Fine/Coarse/Tracking.

F3 NP/P Switches non-prism mode or prism mode.


2

F1 R.HT Sets a prism height by input values.

F2 INSHT Sets an instrument height by input values.

F3 OCC Sets an instrument coordinate point by input values.


F1 OFSET Select Off-set measurement mode.


3F2 m/f/i Switches meter, feet or feet and inch unit.

F3 S/A Select set audio mode.


2-4 Star Key Mode

Press the ( ) key to view the instrument options.

The following instrument options can be selected from the ( ):

1.Adjustment of the contrast of the display (0 to 9 steps) [ or ]

2.Adjustment of the reticle illumination (1 to 9 steps) [ or ]

3.Turn the backlight of the display ON / Blink / OFF.

4.Select Non-prism mode / Prism mode.

5.Turn the Laser pointer option ON/OFF.

6. Turn the Laser plummet option ON/OFF. (Only for the laser plummet type)

7.Setting Tilt Correction

8.Turn the Point Guide option ON/OFF.


9.S/A (set audio) mode

Note: Star key mode does not function when the same function as the function assigned to the star keymode is performed from the main routine.

Key Display mark

Function

F1 B.LT Turn the backlight of the display ON/OFF.

F2 NP/P Non-prism mode / Prism mode selection

F3 L.P. Turn the Laser pointer option ON / Blink / OFF.

F4 L.PL Turn the Laser plummet option ON/OFF. (Only for the laser plummet type)

F1 --- ---

F2 TILTSetting Tilt CorrectionIf ON, the display shows tilt correction value.

F3 P.G. Turn the Point Guide option ON/OFF.

F4 S/AThe light acceptance quantity level for the EDM (SIGNAL), the atmospheric cor-rection value (PPM) and correction value of prism constant (PSM) are displayed.

or CONT Adjust the contrast of the display (0 to 9 steps).

or RTCLAdjust the Reticle Illumination (1 to 9 steps).ON/OFF of the reticle illumination is linked with ON/OFF of the backlight.


CONT:5 RTCL:5 B.LT NP/P L.P. L.PL.

CONT:5 RTCL:5 --- TILT P.G. S/A

Press the star ( ) key.

Press the star ( ) key.

2-5 Serial Signal RS-232C Connector

The serial signal connector is used for connecting the GPT-3000 series with a computer or TOPCON Data

Collector, which enables the computer to receive measured data from the GPT-3000 series or to send preset

data of horizontal angle, etc. to it.

• The following data will be outputted at each mode.

Mode Output

Angle mode ( V, HR or HL) ( V in percent) V, HR (or HL)

Horizontal distance mode (HR, HD, VD) V, HR, HD, VD

Slope distance mode (V, HR, SD) V, HR, SD, HD


• The display and the output at the coarse mode are the same as the contents above.

• At the tracking mode, the displayed distance data only is outputted.

The details necessary for the connection with the GPT-3000 Series are obtained from its Interface Manual

which is optionally available. Please refer to the manual.

Coordinate mode N, E, Z, HR (or V, H, SD, N, E, Z)

2-6 Prism Mode and Non-prism Mode

In GPT-3000 series, the distance measurement will be done using invisible pulse laser beam emitted from

pulse laser diode. You can select measurement mode between Prism mode which is collimating a prism and

Non-prism mode that is collimating a target object except prism.

• Regardless of whether the laser pointer is used, measurement is possible with both the non-prism mode and

the prism mode. That is, when the GPT-3000 is used in the open air, in an urban area, etc., the laser pointer

can be stopped and distance measurement is then conducted, making it possible to prevent the laser light

from hitting a third party.

• When using a reflection sheet, measure with the prism mode.

• For measurement with a prism, be sure to measure with the prism mode. If you measure with the non-prism


mode, accuracy cannot be guaranteed.

• Non-prism mode enables all distance measurements such as Distance measurement, Coordinate measure-

ment, Offset measurement and Layout.

• To switch over Prism mode to Non-prism mode or contrary, press the [NP/P] soft key in each measurement

display. [NP] of Non-prism mode indicator will be shown at the right corner of the display in Non-prism

mode measurement.

Changing mode shall be done before measurement.

Example

• It is possible to set Non-prism mode for distance measurement during the power on time. Refer to “8-2-2

Parameter setting mode 2” to set the option.

• If happened collimating the near distance prism has happend in Non-prism mode, measurement will not be

done because of too much light.

• In Non-prism mode, the distance less than 1m and 400m or more is not displayed.

HR: 120ﾟ30'40" HD* 65.433 m NP VD: 12.345 mMEAS MODE NP/P P1↓

N: 120.456 m E: 34.567 m NP Z: 12.345 mMEAS MODE NP/P P1↓

Distance measurement mode Coordinate measurement mode

Non-prism mode indicator

To change the mode, press the [NP/P] soft key in each measurement.

3. PRINCIPLE

3-1 Principle of Angular Measurement

(1) PrincipleThe pattern of the scale is divided into 1260 lines of equal pitch. The line width of the signal “R” is stable.

The line width of the signals “A”, “B” and “C” is modulated according to the different cycles. (Fig. 1)

The signals are arranged in the order of “R” , “A”, “B” and “C”. When the pattern of the scale is projected,

the waveform is generated on the CCD. (Fig. 2) Obtain an integral value by every four waveform lines and

find out the line whose change is the smallest. It is “R” because the “R” width is stable. When you have

found out “R”, the next is “A” and then “B” and “C” . Therefore the frequency of “A”, “B” and “C” can be

obtained. (Fig. 3)


First, carry out Fourier transformation (DFT) for the equal-pitch signals to execute the accurate calculation of

1 pitch (1028 seconds) or less. Secondly, arrange the waveforms of the frequency for the “A”, “B” and “C”, obtain

each phase and, by combining the phases, obtain the angle of the block including “A”, “B” and “C”. Thirdly, obtain

the angle of the pitch unit by using the kind of the pattern including the reference position. Finally, combine

the accurate and rough calculations and arrange the digits to obtain the angular measurement value.

LED

MirrorCCD

Scale

(V)-angular measurement reading unit (H)-angular measurement reading unit

LED

Scale

CCD

(2) Angular measurement electrical system block diagram

ED

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3-2 Principle of Distance Measurement

(1) PrincipleLet the instrument face the objective (a normal prism is usable) and emit a light (laser beam). The instrument

receives the reflected light and measures its time lag (phase difference). Consequently the distance to the

objective can be measured.

A difference from the conventional light wave telemeter (EDM) is as follows: this instrument does not modu-

late the emitted light but carries out the measurements equal to the long/short wavelength (accurate measure-

ment and rough measurement) at the same time.

The luminous flux emitted outside is a pulse with exceedingly small width.

The instrument emits a pulse light to the objective.

The instrument amplifies the reflected light and generates the receiving timing waveform. According

1

2


to the timing, the sine waveform of TCXO is sampled and so the low frequency beat signal can be

obtained. At the same time, the instrument measures the count value for the time interval which is

obtained by the emitting and receiving timing of the pulse light.

A/D conversion is done for the beat signal of . The converted value and the above count value are

stored in the memory.

Fourier transformation is executed for the data for which A/D conversion has already been done and

the accurate measured distance value is obtained.

CPU arranges the digits for the above count value (rough measurement) and the accurate measurement

to calculate the distance value.

The procedures of ~ are done in the outside and inside light paths and, in consideration of the

calculated differences, the final measured distance value is obtained.

3 2

4

5

6 1 5

(2) Distance measurement system block diagram

PLD

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3-3 Distance Measurement System Optical Arrangement

20

16 17 18 19

PLD


6

14

158

10

15

9

543

12 13

21

22

23

24

2

1 7 11

LD

APD

Chopper

• Telescope (EDM) system

No. Name Function on mechanism Function on adjustment

1 Objective lens EDM focus adjustment

2 Dichroic prism Distributes the light path for the distance mea-surement (optical receiving) system and thecollimation system.

EDM optical axis verticaladjustment

3 Internal lens Collimation system focus adjustment

4 Porro prism Forms an image.

5 Reticle Imaging screen in the collimation system EDM optical axis reverseadjustment


6 Eyepiece lens Optical system for observing the collimationsystem

7 Mirror (Optical emitting pipe)

Aligns the collimation axis with the distancemeasurement (optical emitting) system.

8 Relay lens Changes the magnification of the distancemeasurement system.

9 Mirror (LP) Aligns the laser pointer optical axis with thedistance measurement system.

10 Condenser lens (LP) Condenses the LP light.

11 Reference-ND Adjusts the light intensity for the inside lightpath.

12 Reference lens

13 Condenser lens (P-optical emitting)

Generates the prism distance measurementlight.

14 Mirror (P-optical emitting)


15 Optical emitting fiber Generates the prism distance measurementlight.

16 Condenser lens (Optical emitting fiber)


17 Random phase plate Adjusts the irregular light intensity to be uni-form.

18 Rhomb prism Changes the light path for Prism/Non-prism.

19 Anamorphic prism Forms the beam.

20 Condenser lens (PLD)

21 IR filter Removes the unnecessary light.

22 Circular Adjusts the light intensity for the distancemeasurement.

23 Doughnut lens

24 Optical receiving fiber

4. INSPECTION

4-1 Inspection Procedure

Before starting repairs, use the following procedure to doublecheck the problem location. Before the instru-

ment is disassembled, carry out :

4-2 Theodolite System Accuracy Inspection

4-3 Telescope (EDM) System Accuracy Inspection

When you have located the problem, proceed with disassembly and replacement of the problem unit as

described in the repair manual.


Level the instrument.

Inspection/repair is ended.

Shipment

Theodolite system accuracy

inspection

EDM system accuracy

inspection

Repair the trouble partaccording to troubleshooting flow chart.

Repair the trouble partaccording to troubleshooting flow chart.

Carry out inspections for thetheodolite/EDM systems tomake sure that there is notrouble part.

4-2 Theodolite System Accuracy Inspection

Unit Item Inspection / Adjustment Procedure Standard

1 Perpendicularity of plate level and ver-tical axis

Inspection: Operate the leveling screw to center the bubble. Turn the instrument in 180° to check the movement of thebubble.

Adjustment: Turn the level's adjustment nut to compensate for 1/2 theoffset, and turn the leveling screw to compensate for theother 1/2.

1/4 graduation or less

Adjustment nut


2 Perpendicularity of circular level and vertical axis

Inspection: Check it at the same time with the above “1”.

Adjustment: Turn the level adjustment nut until the bubble is centered.

1/3 graduation or less

3 Alignment of verti-cal axis and optical plummet tele-scope’s line of sight (optical plummet accuracy)

Inspection: Collimate the object set 1m~1.5m away. The measuredvalue must be half the deviation when turning the instru-ment in 180°.

Adjustment: Turn the retile adjustment screw to correct for half thedeviation.

0.5mm or less

4 Reticle vertical cross hair inclina-tion (Scale inclination)

Inspection: When aligning the telescope’s upper or lower verticalcross hair with the bottom cross hair, check the offset ofanother cross hair.

Adjustment: Loosen the eyepiece cell set screw and align the reticlevertical cross hair with the bottom cross hair.

One vertical cross hair or less

Adjustment nut

Set screw

5 Perpendicularity of horizontal axis and vertical axis (plumb line)

Inspection: Collimate the elevation angle collimator and then thedepression angle collimator. At that time, read the offsetfrom the vertical line at the normal and reverse positionsof telescope. The measured value must be half the differ-ence between the read values at the normal and reversepositions.

Adjustment: Slightly loosen only the right horizontal bearing screwsA, B, and C. Use a rod pin and turn the plumb lineadjustment screw to press and adjust the metal part.

10" or less


Loosen these screws.


6 Perpendicularity of horizontal axis and line of sight (reversing)

Inspection: Collimate one horizontal collimator, reverse the tele-scope and collimate another collimator. Read the devia-tion at each collimation. The measured value must behalf the deviation.

To eliminate the collimator's vertical error, when youhave done observation at normal and reverse positions,add the normal and reverse deviation. The measuredvalue must be 1/4 the obtained value.

Adjustment: Turn the right and left reticle adjustment screws to makethe adjustment.

10" or less

7 Tilt sensor operat-ing range

Inspection: Align the collimator scale with the reticle scale. Use thevertical tangent screw to display [90°00'00"]. Use theleveling screw to incline the axis back and forth in 3' ormore from the vertical condition.

Adjustment: Carry out the tilt offset adjustment. If the operatingrange cannot be corrected by offset adjustment, adjustthe tilt installation position.

“TILT OVER” is displayed.

A B

C

Not loosened

Adjustment screwDown Up

Amount of offset

Correction = Offset × −

Right and left

12

adjustment screws

8 Tilt correction accuracy

Inspection: Align the collimator scale with the reticle scale. Use thevertical tangent screw to display [90°03'00"]. Use theleveling screw to align the collimator with the reticlescale.

Adjustment: Carry out the tilt offset adjustment. If the correctionaccuracy cannot be corrected by offset adjustment,adjust the tilt installation position.

10" or less

9 Height “0” posi-tion

Inspection: Align the collimator scale with the reticle scale andcheck the error against the horizontal position[90°00'00" (or 0°00'00")].

Adjustment: Carry out “V ANGLE 0 POINT” of the adjustment

10" or less



mode (refer to the instruction manual). If the height “0”position is not corrected by “V ANGLE 0 POINT” (erroris excessive), adjust the vertical scale installation posi-tion.

Install with the 3 set screws so that it is within ±5° fromthe height “0” position. (Torque: 70N·cm (7kgf·cm))

10 Alignment of line of sight for sight-ing collimator

Inspection: Catch the object with the sighting collimator. Then,when collimating the object with the telescope, the offsetfrom the reticle center must be the measured value.

Adjustment: Loosen the sighting collimator mounting screw and turnit right and left to correct.

Within 20'

+5-5

Set screw

CCD unitCCD Ass'y mounting screw

Mounting screw

4-3 Telescope (EDM) System Accuracy Inspection

4-3-1 Inspection of the telemeter optical axis and the telescope optical axis

(1) Inspection by actual measurement

Procedure Illustration

1 Set a prism about 30m to 50m apart from the

instrument.

Check each of the optical axis of EDM and theodolite about prism mode and non-prismmode in order.


2 Turn on the power as pressing the [F1] key.

“ADJUSTMENT MODE (1/2)” appears.

3 Press the [F4] (P↓ ) key to get “ADJUSTMENT

MODE (2/2)”. Press the [F1] key to select “EDM

CHECK”.

4 Collimate the center of the prism in the prism

mode.

The buzzer keeps sounding.

5 Press the [F4] (HOLD) key to hold the light inten-

sity.

The mark “#” appears at the right side of the light

intensity display.

• H (horizontal) direction check (Don't move the V (vertical) direction.)

6 Use the horizontal tangent screw to move the col-

limating point to the left side of the prism gradu-

ally until the buzzer stops sounding.

ADJUSTMENT MODE 1/2 F1:V ANGLE 0 POINT F2:INST. CONSTANT F3:V0 AXIS P↓

ADJUSTMENT MODE 2/2 F1:EDM CHECK

P↓

V: 90ﾟ10'10" HR: 20ﾟ00'20"SIGNAL: [ ]EXIT NP/P HOLD

V: 90ﾟ10'10" HR: 00ﾟ04'20"SIGNAL: [ ] #EXIT NP/P HOLD

Prism

Reticle


limating point to the center of the prism gradually

until the buzzer begins to sound. Check the light

intensity level on the display unit. Adjust the col-

limating point by turning the horizontal tangent

screw until the minimum level or level two of the

light intensity is displayed.


Prism

Reticle


8 Write down the displayed horizontal angle.


limating point to the right side of the prism gradu-

ally until the buzzer stops sounding.


limating point to the center of the prism gradually.

As Procedure 7, adjust the collimating point by

turning the horizontal tangent screw until the min-

imum level or level two of the light intensity is

displayed.

11 Write down the displayed horizontal angle.

12 Calculate the center of the prism by the values

written in Procedure 8 and 11.

[Example]

Step 8: 0° 01' 20"

Step 11: 0° 09' 40"

Average: 0° 04' 10"

V: 90ﾟ10'10" HR: 00ﾟ01'20"SIGNAL: [ ] #EXIT NP/P HOLD

Quantity level two

Prism

Reticle

13 Collimate the center of the prism.

Compare the value of the horizontal angle at this

time with the one calculated in Procedure 12. If

the difference is within approx. 2', there is no

problem for use.

• V (vertical) direction check (Don't move the H (horizontal) direction.)

[Example]

Reading to prism center: 0° 04' 30"

Calculation: 0° 04' 10"

Difference: 20"



14 Carry out checking as the H direction and com-

pare the measured value of the prism center colli-

mation with the calculated average value. If the

difference is within approx. 2', there is no problem

for use.

• Check in non-prism mode

If the instrument is in the light intensity hold

mode, press the [F4] (HOLD) key to cancel the

hold mode.

[Example]

Lower side of prism: 90° 12' 30"

Upper side of prism: 90° 04' 30"

Average: 90° 08' 30"

Reading to prism center: 90° 08' 50"

Average: 90° 08' 30"

Difference: 20"

15 Press the [F3] (NP/P) key to change to the non-

prism mode.

16 Collimate the center of the prism.

17 Press the [F4] (HOLD) key to hold the light inten-

sity.

The mark “#” is displayed at the right side of the

light intensity display.

Prism

Reticle

V: 90ﾟ10'10" HR: 00ﾟ04'20" NPSIGNAL: [ ]EXIT NP/P HOLD

V: 90ﾟ10'10" HR: 00ﾟ04'20" NPSIGNAL: [ ] #EXIT NP/P HOLD

18 Carry out checking in the non-prism mode as the

above Procedure 5 ~ 14. For each of the horizon-

tal and vertical directions, compare the collimated

value of the prism center with the calculated aver-

age value. If the difference is within approx. 2',

there is no problem for use.

• Check of the laser pointer optical axis



19 On the center of a section paper or a white paper,

draw a vertical line and a horizontal line to be

used as a target.

20 Set the above target about 10m away from the

instrument and collimate the intersection of the

vertical and horizontal lines.

21 Turn on the power of the instrument. Press the

star key and then press the [L.P.] key to light the

laser pointer.

22 When collimating the intersection on the target,

make sure that the center of the laser pointer is

within about 6mm from the intersection on the tar-

get.

Target

About 10m

Note: If you look through the telescope at this time, you will not be able to see the laserpointer. Therefore, conduct this check with the naked eye, viewing the target andthe laser pointer from the side of, or from above, the GPT-3000.

(2) Inspection by using a collimator

The optical emitting wavelength of the GPT-3000 series is different from the current total stations. When

checking the optical axis by a collimator, the CCD camera and a monitor are used.

(It is possible to perform inspection by the collimator with the CCD camera used in the laser products. In

this case, the objective lens has to be changed to a one with magnification ×5 (ST-3K-02)).

1-1 Necessary tools

Tool No. Name Remarks

ST-PT-21ST-PT-31

CCD camera & monitor Made by Tokyo ElectronicsCCD camera : CS3330BMonitor : 9VM10A


1-2 Collimator

For inspection, you can use a collimator for general surveying instruments. There is no problem. For adjust-

ment, please use a collimator equipped with the laser reticle.

(The wavelength of the EDM light source is different between the reticles. If you make adjustment with the

normal reticle, the measured distance/linearity may be out of standard.)

ST-PT-24 Red circular image checking filter For GPT-2000

ST-PT-22 Objective lens Made by NikonFocal distance 50mm: F (1.8)

ST-PT-23 Red circular image checking tool (for the largediameter collimator)

For GPT-2000

ST-PT-15 Red circular image checking tool (for the smalldiameter collimator)

For GPT-2000

ST-3K-01 Reticle lighting tool

ST-3K-10 Light intensity adjusting filter Filter set (1% × 5 pcs.)Size: 50 × 50Installation of the small diametercollimator with adapter

550nm scale(for general surverying)

780nm scale(for invisible laser)

2. Inspection

2-1 Preparation


1 Set the red circular image checking tool, CCD

camera and monitor as illustrated.

(Install the objective lens to the CCD camera head

and screw it into the red circular image checking

tool.)

VIDEO IN CCD monitor

Red circular image

CCD camera

checking tool


2 Remove the illumination unit from the existing

depression angle collimator.

3 Install the red circular image checking tool onto

the rear of the depression angle collimator.

VIDEO OUT

Objective lens

Depression angle collimator

Illumination unit

Red circular imagechecking tool


4 Pull out the knob of the red circular image check-

ing tool and turn it in 90°.

After installing the tool onto the collimator, return

the knob to the original position. The knob is

held.

Knob


5 Set the aperture and focal distance of the objective

lens according to the following conditions.

Conditions: Aperture: 1.8

Focal distance:

6 Turn on the power of the CCD camera controller

and the monitor.

Set the controller according to the following con-

ditions.

AGC : ON

γ : 1

SHUTTER : OFF

LINE : OFF

Others : Set optionally.

7 As watching the monitor, turn the collimator’s

eyepiece lens to adjust focus so that the collima-

tor’s reticle can be seen clearly.

8

2-2 Optical emitting image position check


1 Collimate GPT-3000 to the scale of the depression

angle collimator.

If the scale of the collimator is not seen, install the

reticle lighting tool and project the instrument’s

reticle on the monitor.

CCD camera


2 Install the red circular image checking filter to the

front of the objective lens.

If the image on the monitor is too birght, use the

filter set (ST-3K-10).

CCD monitor

Red circular image checking filter

Lock


3 Turn on the power as pressing the [F1] key.

“ADJUSTMENT MODE (1/2)” appears.

4 Press the [F4] (P↓ ) key to access “ADJUST-

MENT MODE (2/2)”. Then, press the [F1] key to

access “EDM CHECK”.

5 Record the V angle and H angle at this time. (The

Optical emitting image in prism mode


values of the collimation axis)

6 Fit the center of the optical emitting image to the

center of the reticle. Record the V angle and H

angle at this time.

7 Make sure that the difference measured in Proce-

dure 5 and 6 is within the standard.

Error of the optical axis (prism):

Within ±90"

8 Press the [F3] (NP/P) key to change to the non-

prism mode.

9 Fit the optical emitting image to the center of the

reticle and read the angle.

The line direction may be different between the

products.

10 Make sure that the difference between the value of

Procedure 9 and the collimation axis is within the

standard.

Error of the optical axis (non-prism):

Within ±90"

In the vertical direction, adjust the opticalemitting image to the position where the lengthof the upper and lower lines is uniform.In the horizontal direction, adjust the opticalimage with the center between the two lines.

Optical emitting image in non-prism mode


• Check of laser pointer optical axis

11 Turn off the power and, in the normal mode, turn

it on again.

12 Light up the laser pointer and fit the center of its

optical emitting image to the center of the reticle.Optical emitting image of laser pointer


13 Make sure that the difference between the value of

V/H angle and the collimation axis is within the

standard.

Error of optical axis (laser pointer):

Within ±90"

4-3-2 EDM system inspection

The GPT-3000 series has not only the conventional prism measurement function but also the non-prism mea-

surement function. The EDM system must be inspected for the prism and non-prism measurements.

Note: To calculate the instrument constants, set the instrument constants inputted already to “0mm”and measure the linearity.

1. Inspection of prism measurement

(1) Linearity

Although there are several ways to check the linearity, the following is a simple and sure way.

• Setting the base line site


The base line site is to be on solid ground (concrete, etc.). Avoid direct sunlight. A distance of about

40m must be allowed.

Set the point in a concrete block of at least 30-cm square.

Measure at 4, 10, 11.25, 12.5, 13.75 and 15 meters (for short distance)/33, 34.25, 33.5, 36.75 and 38

meters (for long distance). The setting error must be ±5cm.

Use the steel tape to measure the distance (reference value) of each point. The accuracy must be ±1mm

or less.

30cm

30cm

Point

The entire surface may also be concrete. (Indoor location is allowed).

• Measurement

Set up GPT-3000 at the 0m point, and prepare a check sheet as shown below for each point and collect

the data. Record the data for 10 measurements at each point.

Measurement

Distance

Averagex

Referencevalue

Errorx-

1

4m

10

6

2

7

3

8

4

9

5

104.004 4 5 4 4

4.0044 4.00544 -0.0010

+0.0010

-0.0010

5 5 4 4 5


After measurement, check the instrument constants P (S) and P (L).

Calculate the instrument constants P (S) and P (L) as follows:

P (S) = Center value of P - P (minimum/maximum values)

... Center value between the minimum and maximum values of the errors (X - α) for the short

distance 5 points

P (L) = ... Average value of the errors (X - α) for the long distance 5 points

To input the instrument constants, refer to “13-2 EDM Instrument Constant Input”.

(2) Long distance linearity


At a distance more than 300 meters away, install two points to be used for setting the prism. Select a

place of normally good atmospheric conditions and use three prisms.

• Measurement

To measure the reference value, use the EDM and average the values from two or three EDMs.

For long distances, the distance will vary slightly (normally ±10mm) due to the atmospheric conditions.

Therefore, calibrate the unit once a month.

Note: Also take the PPM correction into account.

36.75

38

-0.0030

-0.0010

3

2

1

-1

-2

-3

12 14 16 18 20(m)

(mm)

Σ (X-α)

5

2. Inspection of non-prism measurement

In the non-prism mode of the GPT-3000 series, there are four kinds of the instrument constants as shown

below. Measure a proper point carefully and obtain the correct instrument constants.

Non-prism mode short distance NP (S) : Point A

Non-prism mode long distance NP (M): Point B

Non-prism mode long distance NP (L) : Point C

Non-prism mode 1.5m : Point D

(1) Linearity


The following 21 places are measurement points. These points cover the peak of errors in linearity mea-


surement. If a wrong measurement (the number of point is not full, the point position is not correct, etc.)

is done, you cannot get a correct offset value. Be careful.

Point A: Used for NP (S). 13 points: 3, 3.75, 5, 6.25, 7.5, 8.75, 9.5, 14.5, 15.5, 16.5, 17.5, 18.5, 19.5 (m)

Point B: Used for NP (M). 1 point: 25 (m)

Point C: Used for NP (L). 5 points: 33, 34.25, 35.5, 36.75, 38 (m)

Point D: Used for NP (1.5). 2 points: 1.5, 2.5 (m)

Set each point at within the above distance ±50mm.

Let each target face the GPT-3000 correctly. (The word “face” means the surface of the GPT-3000 objec-

tive lens faces the surface of each target in parallel with the error of ±3° or less.) To set the targets cor-

rectly, use a mirror. (Select a mirror which is larger than a target size.)

Target: Use the white surface side of gray card (Cat. No. E152 7795 made by KODAK).

For 1 point, cut the card (size: 8 × 10 inches) to half to use the one (size: 8 × 5 inches).

• To collimate the center of the target, put a mark on the cross hairs or the center position.

• When measuring the linearity for only the GPT-3000 series (in non-prism measurement with small

diameter), the card (size: 4 × 5 inches (1/4)) can be used.

How to set the target

1. Set a mirror where a target should be set.

2. Collimate the mirror through the GPT-3000.

3. Adjust the mirror position to see the GPT-3000 from the eyepiece. When the mirror is already in the

aforementioned position, the setting conditions are satisfied. As taking care about the mirror posi-

tion (inclination, direction, etc.), set a target.

4. In the same way, set targets at 21 points.

NP linearity Half gray card: White surface

3.0m 3.75m 38m


• Measurement

As prism measurement, prepare a check sheet (as the prism mode) for each point and collect the data.

Check the instrument constants and, if necessary, change them.

How to calculate the instrument constants

NP (S) = Center value of P - P (minimum/maximum values)

... Center value between the minimum and maximum values of the errors (X - α) for the short

distance 13 points

Error in the case of “NP (M) = 25m”

NP (L) = ... Average value of the errors (X - α) for the long distance 5 points

NP (1.5) = The special formula is prepared. So, calculate the error on the Excel sheet. (In this case,

the value of NP (S) is necessary.)

To change the instrument constants, refer to “13-2 EDM Instrument Constant Input”.

(2) Measurement test

As prism measurement, make sure that the specified measured distance is satisfied. For checking, there

are two methods, actual measurement and pseudo-measurement.

(2)-1 Check by actual measurement

Check whether the instrument measures a point at 250m point.

(2)-2 Check by pseudo-measurement

Install the NP measured distance checking filter onto the front of the objective lens and check whether the

instrument measures the target.

The measured distance (target set point) is written on the filter.

For checking, be careful for the following points.

• Let the target face the objective lens correctly.

• Use one gray card (8 × 10 inches) as a target.

• The gray surface must be measured.

• The distance msut be approx. 35m.

Σ (X-α)

5

4-4 Error Code Table

(1) Error codes

Display Description Countermeasure Ref. Page

Tilt Over When the inclination of the instru-ment exceeds the automatic cor-rection range

Level the instrument correctly. If this error isstill displayed, the probable causes are as fol-lows :1. Tilt offset is deviated.2. Tilt installation error is excessive.Carry out repair according to the instructions inthe right page.

6-6

V ANGLE ERROR

When the angular measurementsystem is abnormal

This error is displayed when the instrument ortelescope rotates too fast but it is not trouble. If

6-7


H ANGLE ERRORVH ANGLE ERROR

this error is constantly displayed, check thedetails of error code with the factory mode andtake the repair method of the error code.

E35 When REM (remote elevationmeasurement) is done within ±6° from zenith or nadir

Check without ±6° from zenith or nadir and, ifthe error message is not displayed, there is noproblem.

6-8

E60 EDM unit battery lower level error Replace the D-OSC unit.

E61 EDM EEPROM error hasoccurred. When EEPROM on D-OSC is abnormal, this error is dis-played.

Replace D-OSC. 6-9

E63 Phase plate stop error Replace the open air motor unit.

E68 Chopper operation error hasoccurred. When chopper does notoperate, this error is displayed.

Connect the tool and check the chopper opera-tion. Then, replace EDM Base or D-OSC unit.

6-9

E69 When a command is sent andEDM does not respond within 1second, this error is displayed.

Probable causes are as follows: Cable is faulty,cable is not arranged correctly, connector isfaulty, slip ring is faulty, slip ring brush is incontact, or there is a problem around the EDMpower supply or main PCB. Locate the troubleplace and replace the unit.

6-10

E71 When the vertical angle zero pointis adjusted in a wrong procedure,this error is displayed.

Check the procedure and readjust. 6-11

E72 When the vertical angle zero pointis sharply deviated in its adjust-ment, this error is displayed.

Start the adjustment from the first again.If the error message is still displayed, the scaleinstallation position may be ±5° or more.Carry out repair according to the instructions inthe right page.

6-11

E73 During the vertical angle zeropoint adjustment, when the instru-ment is not leveled or when thevertical/horizontal angle correctiondevice malfunctions, this error isdisplayed.

Level the instrument again and readjust. Invertical angle zero point adjustment, level theinstrument within ±2'. If the error message isstill displayed, check the tilt offset/tilt installa-tion adjustment.

6-11

E81 When the angle unit of the instru-ment (DEG, GON, MIL) is differ-ent from the angle unit set incommunication, this error is dis-played.

Fit the units each other. 6-12

E82 While the ACK mode is set at“standard”, the instrument outputsdata but the external devices suchas FC, PC, etc. do not send ACKwithin the regular time. Under thiscondition, when data is sent tentimes but ACK is not received, this

Check the following points: Parameter setting,software at PC side, cable, wiring/contactaround 6PIN connector and wiring/contactaround slip ring. Carry out repair according tothe instructions in the right page.

6-13



error is displayed.

E92 When tilt offset is not set within±2' in factory mode, this error isdisplayed.

Install tilt to set the tilt offset within ±2'. 6-14

E99 Non-volatile memory error Perform initialization. If this error is still dis-played, replace the main PCB.

6-14

E600 Gate array error has occurred.Gate array on the angular measure-ment PCB malfunctions.

Replace the angular measurement PCB(PCB31).

6-7

E621~E623 CCD integral time “Low” error hasoccurred. When light is taken intoCCD in a too short time, this errormessage is displayed.

Probable causes are as follows:1. CCD unit2. LED unit (only for V)3. Main PCBReplace the unit.

6-7

E631~E633 CCD integral time “High” errorhas occurred. When light is takeninto CCD in a too long time, thiserror message is displayed.

Probable causes are as follows:1. CCD unit2. LED unit (only for V)3. Main PCBReplace the unit.

6-7

E641~E643 Pattern pitch error has occurred.When the pattern pitch taken inCCD is out of standard, this errormessage is displayed.

Probable causes are as follows:1. Set values for main PCB are abnormal.2. CCD unit3. Scale (soil and damage)Adjust the factory mode or replace the unit.

6-7

E681~E683 LED_PWM_High error hasoccurred. When light intensitytaken in CCD is excessive, thiserror message is displayed.

Probable causes are as follows:1. LED unit (only for V)2. CCD unit3. Main PCBReplace the unit.

6-7

E691~E693 LED_PWM_Low error hasoccurred. When light intensitytaken in CCD is insufficient, thiserror message is displayed.

Probable causes are as follows:1. LED unit (only for V)2. CCD unit3. Main PCBReplace the unit.

6-7

E731~E733 CCD pattern contrast error hasoccurred. When trouble hasoccurred frequently in the CCDwaveform (RABC pattern), thiserror is displayed.

Probable causes are as follows:1. Scale (soil and damage)2. CCD unit3. Main PCBReplace the unit.

6-7

E741~E743 A_Phase error has occurred.When the A pattern phase is abnor-mal, this error is displayed.


6-7

E751~E753 B_Phase error has occurred. Whenthe B pattern phase is abnormal,this error is displayed.


6-7

E761~E763 C_Phase error has occurred. Whenthe C pattern phase is abnormal,

Probable causes are as follows:1. Scale (soil and damage)

6-7



this error is displayed. 2. CCD unit3. Main PCBReplace the unit.

E771~E773 Angle calculation error hasoccurred. When data of the angu-lar measurement CCD unit isabnormal, this error is displayed.

Probable causes are as follows:1. CCD unit is faulty. (Installed position)2. Main PCB3. Scale (soil and damage)Replace the unit.

6-7

FILE EXISTS The file with the same name exists. Check the file name and input it again. -----

FULL FILES Files have already been made up tomaximum quantity (30) and morefiles cannot be made.

Reduce the file quantity by deleting the unnec-essary file, etc.

-----

FILE NOTSELECTED

When file data is necessary, a fileto be used is not selected.

Select a file and execute the procedure again. -----

PT# DOESNOT EXIST

The input point name does notexist in the internal coordinatedata.

Check the point name and input it again. -----

CALCERROR

• When setting a direction angle,the input rear view point coordi-nate is the same as the instru-ment constant coordinate

• When the layout mode is exe-cuted, the input layout coordi-nate is the same as theinstrument constant coordinate

• When setting a new point, itscoordinate cannot be calculatedbecause of wrong measurement,etc.

• Check the point name and input it again.• When setting a new point, perform measure-

ment again.

-----

PT# EXIST When setting a new point name,the same point name already existsin the internal coordinate data.

Select another point name and store it. -----

LIMIT OVER • A numerical value out of therange has been input.

• When setting a new point, itscoordinate cannot be calculatedbecause of wrong measurement,etc.

• Check the value and input it again.• Perform measurement again.

-----

NO FILE • In data search, when the first orlast data is displayed, you triedto search data by pressing the[ ] or [ ] key.

• When data search is done forthe specified point name, thename does not exist in theinternal coordinate data.

• The specified file name doesnot exist in the internal mem-ory.

• When the first data is displayed and the[ ] key is pressed, the next data is dis-played. When the last data is displayedand the [ ] key is pressed, the precedingdata is displayed.

• Check the specified point name and searchdata again.

• Check the specified file name and input itagain.

-----



MEMORYERROR

Trouble has occurred in theinstrument internal memory.

Initialize the internal memory and then use it. -----

MEMORYPOOR

When trying to input the coordi-nate data manually or when try-ing to store a newly-set pointcoordinate data, the stored coor-dinate data exceeds the memorycapacity.

Check the memory capacity and then use it. -----

5. DISASSEMBLY PROCEDURE

5-1 Instrument Disassembly Procedure

: Indicates the direction of moving or removing.

: Indicates a part that should be removed for disassembly.


oval

Loosen the handle screw and then remove the

handle unit.

Note

Torque is shown by SI unit (N·cm).When using a torque screwdriver, be careful about the unit.


Han

dle

Rem

Inte

rnal

Bat

tery

Rem

oval

As pushing down the battery locking lever,

remove the internal battery.

Left

Cov

er R

emov

al

Remove the 5 screws.

Notes:The waterproof Teflon washer is attachedto all the screws.When assembling, tighten the screws withtorque of 20N·cm (2kgf·cm).

1

2


Use tweezers to disconnect the 9 connectors.


CP

U U

nit R

emov

al


Use tweezers to disconnect the 2 connectors

from the rear of the CPU unit.


t Cov

er R

emov

al


Notes:The waterproof Teflon washer is attachedto all the screws.When assembling, tighten all the screwswith torque of 20N·cm (2kgf·cm).

1

2


Rig

hD

ispl

ay U

nit R

emov

al


Notes:The waterproof Teflon washer is attachedto all the screws.When assembling, tighten the screws withtorque of 10N·cm (1kgf·cm). (Tighten them with the same torque forthe reverse display unit.)In GPT-3007, the cover unit is installed atthe reverse display unit. Apply silicone(KE-3475T) to the whole circumference.

Remove the clamp of the connector on the rear

of the display unit and then remove the flexible

cable.

(Take the same procedure for the reverse display

unit.)

1

2

3


king

1 R

emov

al

Remove the packing 1.

Notes:When assembling, fit the packing 1 not toprotrude from the groove.When the display unit is removed, replacethe packing 1 in principle.

1

2


Pac

LCD

Rem

oval

Remove the 8 screws and then remove LCD.

[F] K

eys

and

Mod

e K

eys

Rem

oval

Remove the [F] keys and mode keys.

Note: When assembling, fit the keys as push-ing their periphery not to float each key.



Notes:The waterproof Teflon washer is attachedto all the screws.When assembling, tighten the screws withtorque of 9N·cm (0.9kgf·cm). (Tightenthem with the same torque for the reversedisplay unit.)

1

2


Bas

e R

emov

al

Pull out the flexible cable from the base and fer-

rite core.

Opt

ical

Plu

mm

et T

eles

cope

Rem

oval

Remove the 2 screws and then pull out the opti-

cal plummet telescope.

Note: When assembling, be careful about theplaces where the V screw and U screwshould be used.


A)

Uni

t Rem

oval

Remove the 2 screws with a hexagonal wrench

(M2.5).

Notes:Washers are set at the end faces of the tiltunit and standard.When installing the tilt unit, tighten thescrews with torque of 90N·cm (9kgf·cm).

1

2


Tilt

(Ti

lt (B

) U

nit R

emov

al

Remove the 2 screws with a hexagonal wrench

(M2.5).

Notes:Washers are set at the end faces of the tiltunit and standard.When installing the tilt unit, tighten thescrews uniformly with torque of 90N·cm(9kgf·cm).The tilt (B) unit is applied to the followingmodels.GPT-3002/3003/3005

V B

rush

Uni

t Rem

oval


Note: When removing, be careful not to bendthe brush.

1

2

3


easu

rem

ent H

olde

r U

nit



V A

ngul

ar M

Ver

tical

Tan

gent

Uni

t Rem

oval

Use a hexagonal wrench (M1.5) to remove the

screw.

Ver

tical

Cla

mp

Uni

t Rem

oval

Use a flexible wrench (ST-TK-17) to remove the

metal fastener.


Cla

mp

Uni

t Rem

oval

Remove the vertical clamp unit.

Note: When removing, be careful about themiddle, right and left pads.


Ver

tical

V

Slip

Rin

g U

nit R

emov

al

Use tweezers to disconnect the cables from the

connector.

Remove the 3 screws and then pull out the V slip

ring unit.

Red

2-pin connector

Black BlueWhite Orange

Green

Cable arrangement of slip ring

5-pin connector(The pin 5 is open.)


acer

Rem

oval

Use tweezers to remove the spacer.

Note: When you try to remove the spacer, it isdifficult because the screw lock isapplied. Dissolve the screw lock with asolvent.


Sp

Left

Hor

izon

tal A

xis

Uni

t Rem

oval


Note: When assembling, tighten the screwswith torque of 70N·cm (7kgf·cm).

Loosen the 3 left metal mounting screws through

the hole of the left horizontal axis.


ntal

Axi

s U

nit R

emov

al

Remove the left horizontal axis unit.

Notes:When installing, the triangular mark ofscale must be at the lower side with thetelescope objective lens at the left.When installing, the notch of the left metalmust be at the upper side.

1

2


Left

Hor

izo

Rig

ht H

oriz

onta

l Axi

s R

emov

al


Notes:The installation mark is put on the righthorizontal axis. When installing, thismark must be at the objective lens side.

When installing, torque is 90N·cm(9kgf·cm).

Rig

ht M

etal

Rem

oval


Note: When installing, torque is 90N·cm (9kgf·cm).

1

Object lens side

Installation mark Right horizontal axis

2


pe (

ED

M)

Rem

oval

Lift up the telescope (EDM) unit to remove it.


Tele

sco

Hor

izon

tal T

ange

nt U

nit R

emov

al

Loosen the tangent cylinder and remove the piston.

Note: Using a wide screwdriver, remove thepiston not to damage the slottedgroove.

Use a hexagonal wrench (M1.5) to loosen the 2

screws.


r C

over

Rem

oval

Remove the 2 screws and then remove the center

cover.

Note: When assembling, apply grease (SH-33M) evenly to the rear of center cover.


Cen

teS

tand

ard

Rem

oval

Use a hexagonal wrench (M4) to remove the 3

screws.

Lift up the standard to remove it.


Hol

der

Rem

oval



CC

DH

1 A

ngul

ar M

easu

rem

ent U

nit R

emov

al


Note: When removing the H1 angular mea-surement unit, be careful not to contactit with the scale.

H2

Ang

ular

Mea

sure

men

t Uni

t Rem

oval


Note: When removing the H2 angular mea-surement unit, be careful not to contactit with the scale.(Only in GPT-3002/3003/3005)


r C

over

Rem

oval


Note: The waterproof Teflon washer isattached to all the screws.


Low

e(H

) B

rush

Mou

nt R

emov

al

Remove the 1 screw.Note: When removing the (H) brush mount,

be careful not to bend the brush.

(H)

Slip

Rin

g U

nit R

emov

al

Remove the 3 screws.Note: Before removing the (H) slip ring unit,

remove the cable band.


Use a flexible wrench (ST-TK-17) to remove the

metal fastener.


Ver

tical

Axi

s U

nit R

emov

al

Remove the bearing plate Ass’y , washer plate

and spring washer .

Use a hexagonal wrench (M2.5) to remove the 4

screws.

1

2 3


How to install the vertical axis unit• Against the housing mark ( mark) of upper

panel, the triangular mark ( ) of scale must

be at the illustrated position.

• The tightening torque of the vertical axis unit

mounting screws is 120N·cm (12kgf·cm).

Upper panel housing markTrianglar mark

( mark)


Ver

tical

Axi

s U

nit R

emov

al

Lift up the vertical axis unit and remove it from

the upper panel.

5-2 Telescope (EDM Unit) Disassembly Procedure


rrel

Cov

er R

emov

al

Remove the 4 screws and then remove the lens

barrel cover.

When assembling, set the Teflon washer and

tighten the screws with a torque screwdriver

(20N·cm/2kgf·cm).


Lens

Ba

ED

M C

able

s R

emov

al

Remove the coaxial cable (CN3).

Remove the LD/PG cable (CN8).


Remove the LED cable (CN7).


ED

M C

able

s R

emov

al

Remove the circular flexible cable (CN5).

Slide the arrow places of the connector upward

at the same time to unlock it. Then, remove the

flexible cable.

Remove its 3 fixing screws and then remove the

D-OSC PCB.

When assembling, insert the connector at the

illustrated place and tighten the screws.


Remove the PLD driver cable (CN2).


ED

M C

able

s R

emov

al

Remove the open air motor cable (CN6).

Remove the communication cable (CN1).


Remove the head amplifier coaxial cable (CN3).


ED

M C

able

s R

emov

al

Remove the chopper motor cable (CN10).

Remove the rhomb prism motor cable (CN9).


Remove the head amplifier cable (CN2).


ED

M C

able

s R

emov

al

Remove the spacer bolts (3 places).

Remove the shield case.


Cab

les

Rem

oval

Remove the power cable (CN1).


ED

MO

ptic

al R

ecei

ving

Uni

t Dis

asse

mbl

y

Remove the tape, which fixes the optical receiv-

ing fiber on the head amplifier.

Remove the optical receiving fiber fixing screw

from the head amplifier.


Remove the optical receiving fiber from the head

amplifier.

If the screw lock is applied to the optical receiv-

ing fiber, it cannot be removed easily. In such a

case, do not pull the optical receiving fiber forc-

edly.


Opt

ical

Rec

eivi

ng U

nit D

isas

sem

bly

Remove the screws (3 pcs.) which fix the head

amplifier fixing plate. Then, remove the head

amplifier and its fixing plate together.

Loosen the circular unit fixing screw and then

remove the unit.


eivi

ng U

nit D

isas

sem

bly

Loosen the mounting screws and then remove

the unit.

The optical receiving fiber is installed to the unit.

So, remove the unit carefully.


Opt

ical

Rec

Bas

e R

emov

al

Remove the base mounting screws.

When assembling, push the base in the arrow

direction until it stops.

Tightening torque: 5kgf·cm (50N·cm)

Remove the relay connector of the LP cable.


Remove the base as taking care to prevent the

connector from being caught by the cable hole of

the shield plate.

When assembling, pass the cables through the

hole of the shield plate and pull them toward the

opposite side.


Bas

e R

emov

al

Pass the rhomb prism motor cable as shown

below.

Pip

e U

nit R

emov

al

Remove the pipe unit fixing screws.

When assembling, push the pipe unit in the

arrow direction until it stops.

Tightening torque: 5kgf·cm (50N·cm)

Pass the cable through the arrow place andthen pull it toward the opposite side.

Cable hole


e U

nit R

emov

al

Remove the pipe unit.

Be careful not to touch the objective lens.


Pip

Dic

hroi

c U

nit R

emov

al

Remove the Ref-ND fixing screw.

Remove the Ref-ND with its fixing shaft.

When installing, refer to the right illustration to

set the front and rear of the Ref-ND correctly.


Remove the mounting screw and then remove

the shield plate.

When assembling, tighten the screw and then

apply the adhesive to the places as shown below.

Instantaneous adhesive


Dic

hroi

c U

nit D

isas

sem

bly

Remove the dichroic unit fixing screw.

Tightening torque when assembling: 5kgf·cm (50N·cm)

Push the unit in the direction as shown below

until it stops.

Remove the dichroic unit.

Screw lock (red)


tion

Rin

g R

emov

al

Use the black-colored ring turner (ST-DA-12) to

remove the black-colored ring.


Dec

ora

Obj

ectiv

e Le

ns U

nit R

emov

al

Loosen the 2 screws.

Make sure the alignment marks of the lens barrel

Ass’y and objective lens unit are aligned.


Use the objective plate wrench (ST-DA-13) to

loosen the objective lens unit.


Obj

ectiv

e Le

ns U

nit R

emov

al

Turn the objective removal tool (ST-DA-14)

clockwise to raise the objective lens unit.

Remove the objective lens unit.


ce C

over

Rem

oval

Remove the eyepiece cover.


Eye

pie

Eye

piec

e U

nit R

emov

al


Remove the eyepiece unit.




Eye

piec

e B

ase

Uni

t Rem

oval

Remove the eyepiece base unit.

Foc

us R

ing

Rem

oval



Remove the focus ring holder.


Foc

us R

ing

Rem

oval

Turn the focus ring clockwise to remove it.

Inte

rnal

Ass

’y R

emov

al

Use a rod pin to loosen the lead pin.


Remove the lead pin.


Inte

rnal

Ass

’y R

emov

al

Remove the internal Ass’y.

5-3 Left Cover Disassembly Procedure (Bluetooth Type)


Cov

er R

emov

al

Remove the 5 screws and then remove the leftcover.Notes:

When installing the left cover, the tighten-ing torque of the screw is 20N·cm(2kgf·cm).The waterproof Teflon washer is attachedto all the screws. Be careful.

1

2


Left

Cab

le R

emov

al

Remove the Bluetooth unit cable from the CPUunit.

Blu

etoo

th U

nit R

emov

al

Remove the 2 screws and then remove the Blue-tooth unit from the problem left cover.Note: The Bluetooth unit is a strategic mate-

rial product and so is not sold as a singleunit for other purposes except replace-ment/repair.When the Bluetooth unit is removed,please use it for the same instrument asbefore.


Fit the Bluetooth unit into the new left cover.


Blu

etoo

th U

nit I

nsta

llatio

n

Record the Bluetooth address number (12 digits).The Bluetooth unit address number in the rightillustration is “0000E14F49B2”Note: The above address number is used for

checking the Bluetooth communication(P. 10-6).

BD 0000E14F49B2

A 27000031

Bluetooth address number (12 digits)

6. TROUBLE SHOOTING

6-1 Trouble Shooting Flow Chart

This chapter will explain the replacement of units against symptoms by using flow charts to locate the prob-

lem unit.

(Example)

NO

Symptom

Diagnosis


* Before replacing the PCB unit, obtain the user data and user set values.

YES

* Reference item

Find and replace the problem unit.

NO

YES

NO

YES

Diagnosis Diagnosis

(1) The power is not turned on.

NO

YES

The above symptom has occurred.

Is the terminal voltage of the internal power supply 7.2V?

Recharge.


Refer to the following table for other probable problem units.

If any connector is disconnected (including the improper contact) on the PCB or if the software is not installed

properly, the power may not be turned on, either. (Check the contact or install again and then check the opera-

tion.)

Unit How to check

• Display unit• Display unit cable

Check the operation of the power switch on the normal and reverse sides. If onlythe reverse (or normal) side operates normally, the normal (or reverse) displayunit may malfunction. Replace the unit (display unit, display unit cable, etc.) andcheck the operation.

• Right cover unit Use the external power supply (tool power supply), etc. and supply the powerfrom the bottom of the instrument. If normal operation is done, the instrument'sright cover unit may malfunction. Replace the unit and check the operation.

Contact it properly.Replace the CPU unit.

NO

YES

Is the terminal voltage 7.2V?

NO

YES

Is it contacted with the instrument's

terminal?

Repair the internal power supply.

Refer to P. 7-2.

(2) [Battery empty]

NO

YES


Is the terminal voltage of the internal power supply 7.2V?

Recharge.


When using BT-32Q, the use time is shortened compared with BT-52QA.

If using the external power supply of about 7.2V, the battery level display may blink. But it does not show a

trouble. If you check the battery level with the external power supply, use 2~3 batteries of about 8.4V as stan-

dard. (The reference value of input voltage is different between the internal and external power supplies.)

NO

YES

NO

YES

OK

NO

YES

Is the error displayed?

Is the terminal voltage 7.2V?

Is it contacted with the instrument's

terminal?

Contact it properly.Replace the CPU unit. Repair the internalpower supply.

Refer to P. 7-2.

(3) • Display is missing.• Keys do not work. (Keys are not switched.)

NO

YES

Display is missing.

One side is missing.


Replace the display unit cable. Replace the CPU unit.

NO

YES

Replace the display unit.

OK

Refer to P. 7-2.

(4) Return signal level does not increase.The “C” mark does not move.The “C” mark stops midway.The “C” mark does not stop moving.

NO


Is the P/NP operation changed

normally?


YES

Replace the base unit.

OK

NO

YES

Does the chopper unit operate

normally?

Adjust the Ref light intensity.NOIs the reference

light intensity voltage normal?

YES

Replace the circular unit.NODoes the

circular unit operate normally?

YES

Replace the EDM amplifier unit.NOAfter replacing

the D-OSC PCB, is it OK?

YES

Refer to P. 7-3.

Refer to P. 11-8.

Refer to P. 7-3.

Refer to P. 7-3.

(5) [TILT OVER]

NO

YES


Is the instrument leveled?

Level the instrument and check it.


When the inclination is ±3' or more against the horizontal position including the offset value of tilt sensor, this

error is displayed. The tilt unit or angular measurement main PCB unit may malfunction. But this error is

sometimes canceled by adjusting the tilt offset or its installation position. Before replacing the unit, check if

adjustment is correct.

Adjust the installationposture of the tilt unit.

Replace the tilt unit.

NO

YES


NO

YES

Is the tiltunit installed and adjusted

correctly?

OK

In the factory mode, input thetilt offset again.

NO

YES

NO

YES

Replace the CPU unit.

In the parameter setting mode1,set tilt correction to “OFF”.



Refer to P. 8-3.

Refer to P. 8-8.

Refer to P. 7-2. Refer to P. 7-2.Refer to P. 9-21.

(6) [V ANGLE ERROR][H ANGLE ERROR] [E600/E700 range][VH ANGLE ERROR]


In the factory mode, check the detailederror code (3 digits).

Check the set values and waveform ofCCD. Then locate the problem unit.


E600 has occurred. *

Refer to P. 8-11.

([F3] : CCD angle measurement mode)

Refer to P. 7-2.


Check the displays of [ANGLE ERROR] in the factory mode. They are errors of the E600 and E700 range

and, in the range, you can check the details. (*E600 shows that the gate array on the CPU unit is faulty.

Replace the CPU unit.)

In an error code of 3 digits (in the E600/E700 range), the right-end digit shows a trouble place. (Refer to the

following example.)

Example)

E621: CCD integral time_Low error ..........The trouble CCD is “1”. → H1

E622: CCD integral time_Low error ..........The trouble CCD is “2”. → H2

E623: CCD integral time_Low error ..........The trouble CCD is “3”. → V1

E624: CCD integral time_Low error ..........The trouble CCD is “4”. → V2

After checking the 3-digit error display, carry out the following procedure. (For example, E622 is explained.)

Example)

1. In the factory mode, obtain and check the CCD set values. (If an abnormal value is inputted, input a normal

value and make sure that the error is canceled.)

2. Remove the cover and connect the tool to the CPU unit. Check the waveform of the CCD which is proba-

bly a problem unit.

3. By observing the waveform, judge that the problem unit is CCD unit, LED unit, Scale (soil or

damage) or CPU unit. Replace (or clean) the unit.

4. In the factory mode, input the set values again and check the operation.

5. Perform inspection.

Replace the problem unit as referring tothe replacement procedure.

Refer to P. 6-15.

Refer to P. 7-1.

1 2 3

4

(7) [E35] is displayed.

NO

YES


Are youmaking measurement

(horizontal distance or relative height) at the REM mode with V

angle in the range of ±6°from zenith or

nadir? Adjust the vertical angle zero point.

Refer to P. 13-1.


When the measurement key is pressed in the REM mode while the lens barrel is within ±6° from zenith or

nadir, this error is displayed. When this error is displayed under this condition, it does not show a trouble. Be

careful.

Make measurement out of the rangeof ±6° from zenith or nadir.


NO

YES

Is adjustment ended normally?

OK

NO

YES

Is the error (E35) displayed?

Go ahead to eachflow chart.

(Another error is displayed.)

Refer to P. 7-2.

(8) [E60] is displayed. (EDM unit battery lower level error)



Replace the D-OSC unit.

Refer to P. 7-3.


When any part on the D-OSC unit malfunctions, this error is displayed.




Refer to P. 7-3.


Replace the EDM base unit.

Refer to P. 7-3.



NO

Check the contact on the communicationroute visually and with a tester.

Is there an improper contact place?


This is a communication error between the EDM D-OSC unit and the standard CPU unit.

The problem can occur in the PCBs and the signal route between the PCBs.

As referring to the connection diagrams (P. 10-1 and P. 11-2), check contact or disconnection in the route,

namely, cables, connectors, slip ring, brush, etc. If there is no problem, replace each PCB unit.

Repair the improper contactplace. (Replace.)

OK

YES


NO

YES

Is the error display canceled?


Refer to P. 7-2.

Refer to P. 7-3.

(12) [E71], [E72] or [E73] is displayed.

The above symptom is displayed.

NOIs adjustment ended normally?

Check the procedure and readjustthe vertical angle zero point.

Refer to P. 13-1.


When the vertical angle zero point is adjusted in the adjustment mode and the following troubles have

occurred, the errors in the E70 range are displayed.

E71 : Displayed when adjustment is done in a wrong procedure.

E72 : Displayed when the vertical angle zero point is excessively deviated or when the vertical scale is

installed with an error of ±5° or more.

E73 : Displayed when the instrument is not correctly leveled or when there is an error in the tilt offset or

tilt installation position adjustment.

If these errors are displayed frequently in the normal mode, the CPU unit may malfunction.

OK

YES

Adjust the tilt offset/tiltinstallation position.

Refer to P. 9-21.



Fit the angle unit set in the instrumentto the unit on the external device.

NO

Performcommunication between

the external device and instrument again. Is the error


When you try to change the angle unit set in the instrument through the external device, this error occurs.

Normally it does not occur but, because of the specification (software) of the external device, it can occur.

Check the set unit in the instrument and the (specification) of the external device.

Refer to the interface manual (option) for the communication between the external device and instrument.


OK

NO

YES


YES

displayed?

Check if there is a problem in the externalcommunication device (especially, software).

Refer to P. 7-2.



Connect an external communication device made byTOPCON (DK-7, etc.) and check the communication(sending and receiving) toward the instrument. Select“ACK MODE: STANDARD” in the parameters ofthe instrument.

Refer to P. 8-5.


This is a communication error between the external communication device (PC, FC, etc.) and the instrument

(excluding the file transmission). When repair is done for this error, also check the external communication

device being used by the customer.

Refer to the interface manual (option) for the communication between the external device and instrument.

Replace the problem unit.

NO

YES

Is there improper contact or disconnection?

NO

YES


Check if there is improper contact or disconnectionin the signal route from the CPU unit to the externalcommunication device (communication cable/com-munication connector in the instrument/slip ring/brush, etc.).

Replace the CPU unit. Repair the external communicationdevice (hardware or software).

Refer to P. 7-2.



NOIs the offset within ±2' ?

Level the instrument and check thetilt offset in the factory mode.

Refer to P. 8-10.


When you try to input offset of ±2' or more in tilt offset adjustment of factory mode, this error is displayed.

Check the offset. If it is beyond ±2', the tilt installation position is not correct. Adjust the tilt installation pos-

ture.


When there is a trouble in the non-volatile memory on the CPU unit, this error is displayed. Execute “ALL

CLR” in “EEPROM INIT.” of factory mode. If the error is not canceled yet, replace the CPU unit.

Before executing “ALL CLR”, record the set values of the instrument (CCD center value/tilt constant/others,

etc. Refer to P. 8-18). (After “ALL CLR”, input the values again.)

Press [F4] or [ENT] key todecide the tilt offset.

YES

Adjust the tilt unit installation.

Refer to P. 8-10. Refer to P. 9-21.


Replace the CPU unit. OK

NO

YES


Execute “ALL CLR” in “EEPROMINIT.” of factory mode.

Refer to P. 8-15.

Refer to P. 7-2.

6-2 Trouble Shooting of Angular Measurement System Problem Unit

If the error code (V ANGLE ERROR, H ANGLE ERROR, VH ANGLE ERROR) is displayed in the assem-

bled product, there is a problem in the CCD unit, LED unit or scale.

Each of angular measurement system units will be diagnosed as follows.

Preparation

• In the factory mode, check if the PWM value and PAT value are within standard. If they are not so, it is

necessary to diagnose the unit. (Refer to P. 9-7 for checking PWM/PAT in the factory mode.)

• Remove the left cover. (Refer to P. 5-1 of “DISASSEMBLY PROCEDURE”.)

• Check the CCD signal waveforms on the angular measurement PCB. (Refer to P. 10-2 of “Angular Mea-

surement Digital System Repairs”.)

When the PWM value is beyond standard

1

2


• The scale or CCD is soiled. Clean it.

• LED light intensity is faulty. The LED unit (for the horizontal side, angular measurement unit) may be

faulty. Replace it.

When the PAT value is beyond standard

• The clearance may be faulty between the scale and CCD. Replace the CCD unit (for the horizontal side,

angular measurement unit).

Check of waveform

1) When the waveform is as Fig. 1

If part of the signal pattern is missing, there may be dust on the CCD surface or scale surface. Blow

dust with air or clean the surface.

* If the problem is not solved, there may be damage on the CCD surface or scale surface. Replace the

unit.

3

4

The signal is missing because of dust.

(Fig. 1)


The LED unit may be faulty (LED waveform is not even). Replace the LED unit on the V side and the

angular measurement unit on the H side.

It is NG when the difference is 30% ormore between the signal high point and low point in the reading range(between cursor 1 and cursor 2).

Standard-

----------------- × 100 ≤ 30%

A

B

A B

B

BA



The LED unit may not be positioned correctly. Position the unit again.

After diagnosing the units with the symptoms, replace the unit according to the replacement procedure of the

problem unit (P. 7-1).

(Fig. 2)

GND

Cursor 1=570µs

Cursor 2=1058µs

(Fig. 3)

BA

Incorrect position

and are not uniform.A B

Cursor 1=570µs

Cursor 2=1058µs

7. EACH UNIT REPLACEMENT PROCEDURE

7-1 Angular Measurement System Unit Replacement Procedure

After one unit is diagnosed with symptoms to have a problem, the unit will be replaced as follows.

After assembly is completed, inspect the instrument.

Replacement of (V) CCD unit and (V) angular measurement holder unit1) Preparation

• Perform disassembly as referring to “DISASSEMBLY PROCEDURE” (P. 5-1→5-3, 5-5).2) Replacement of unit

• Install the (V) CCD unit and (V) angular measurement holder unit as referring to “(V) angular mea-surement system unit installation and adjustment” (P. 9-16).

3) How to adjust

1


• Carry out the positioning adjustment as referring to “(V) angular measurement system unit installa-tion and adjustment” (P. 9-16→ 9-20).

• After the positioning adjustment, record the center value.4) Assembly

• Perform assembly in the reversed procedure of “DISASSEMBLY PROCEDURE” (P. 5-5, 5-3→5-1).

Replacement of (H) angular measurement unit1) Preparation

• Perform disassembly as referring to “DISASSEMBLY PROCEDURE” (P. 5-1→5-5, 5-11→5-13).• Before removing the tilt unit, record the tilt coefficients (K, A).

2) Replacement of unit• Replace the angular measurement unit as referring to “(H) angular measurement system unit installa-

tion and adjustment” (P. 9-9).3) How to adjust

• Carry out the positioning adjustment as referring to “(H) angular measurement system unit installa-tion and adjustment” (P. 9-9→9-15).

• After the positioning adjustment, record the center value.4) Assembly

• Perform assembly in the reversed procedure of “DISASSEMBLY PROCEDURE” (P. 5-13→5-11, 5-5→5-1).

Replacement of vertical scale Ass’y1) Preparation

• Perform disassembly as referring to “DISASSEMBLY PROCEDURE” (P. 5-1→5-2, 5-6→5-7, 5-8→5-10).

2) Replacement of part• Install the vertical scale Ass’y as referring to “DISASSEMBLY PROCEDURE” (P. 5-10→5-8).* When installing, be careful about its direction. (Refer to P. 5-10.)* Clean the scale surface carefully before installing.

3) How to adjust• After installing the vertical scale Ass’y, carry out the CCD positioning adjustment as referring to

“(V) angular measurement system unit installation and adjustment” (P. 9-16→9-20).• After the positioning adjustment, record the center value.

4) Assembly• Perform assembly in the reversed procedure of “DISASSEMBLY PROCEDURE” (P. 5-7→5-6,

5-2→5-1).

2

3

Replacement of vertical axis Ass’y

1) Preparation

• Perform disassembly as referring to “DISASSEMBLY PROCEDURE” (P. 5-1→5-6, 5-11→5-16).

• Before removing the tilt unit, record the tilt coefficients (K, A).

2) Replacement of unit

• Replace the vertical axis Ass’y as referring to “DISASSEMBLY PROCEDURE” (P. 5-16→5-15).

* When installing, be careful about its direction.

* Clean the scale surface carefully before installing.

3) How to adjust

• After replacing the vertical axis Ass’y, carry out the angular measurement unit positioning adjustment

as referring to “(H) angular measurement system unit installation and adjustment” (P. 9-9→9-15).

• After the positioning adjustment, record the center value.

4


4) Assembly

• Perform assembly in the reversed procedure of “DISASSEMBLY PROCEDURE” (P. 5-16→5-11,

5-6→5-1).

Replacement of CPU unit1) Preparation

• Perform disassembly as referring to “DISASSEMBLY PROCEDURE” (P. 5-1→5-2).

• Before disassembly, record the following data.

Tilt coefficient................................. K, A

H1 angular measurement unit ......... Center value and integral time

H2 angular measurement unit ......... Center value and integral time

V CCD unit ..................................... Center value and integral time


• Replace the CPU unit and connect the cables.

3) How to adjust

• Set a variety of information as referring to “10-2 Angular Measurement Digital System Repairs”

(P. 10-2→10-3).

4) Assembly

• Perform assembly in the reversed procedure of “DISASSEMBLY PROCEDURE” (P. 5-2→5-1).

• Perform “10-3 Setting of Integral Time” (P. 10-4).

• Initialize the Bluetooth unit. (P. 8-17) (GPT-3000W only)

Replacement of tilt unit1) Preparation



• Replace the tilt unit.

* The washers are set at the end faces of the tilt unit and standard. Be careful.

3) How to adjust

• Perform the tilt positioning adjustment, tilt coefficient input and tilt offset input as referring to “9-2-

3 Tilt unit installation and adjustment” (P. 9-21→9-22).

4) Assembly


5

6

7-2 EDM System Unit Replacement Procedure

Replacement of EDM base unit

1) Preparation


2) Replacement

• Replace the EDM base unit and connect the cables.

3) How to adjust

• Perform adjustment according to the flow chart (P. 11-1) of “11. TELESCOPE (EDM) SYSTEM

REPAIRS”.

4) Assembly


1


Replacement of EDM D-OSC PCB

1) Preparation


2) Replacement

• Replace the D-OSC PCB and connect the cables.

3) How to adjust


REPAIRS”.

4) Assembly


Replacement of EDM amplifier unit

1) Preparation


2) Replacement

• Replace the amplifier unit and connect the cables.

3) How to adjust


REPAIRS”.

4) Assembly


Replacement of optical receiving unit

1) Preparation


2) Replacement

• Replace the optical receiving unit and connect the cables.

3) How to adjust


REPAIRS”.

4) Assembly


2

3

4

7-3 Other Units Replacement Procedure

Replacement of optical plummet telescope

1) Preparation



• Replace the optical plummet telescope. When installing, be careful about the places where the V

screw and U screw should be used.

3) How to adjust

• Align the vertical axis with the line of sight of the optical plummet telescope as referring to “4-2

Theodolite System Accuracy Inspection” (P. 4-2).

4) Assembly

1



Replacement of V tangent unit

1) Preparation



• Replace the tangent unit. When installing, make sure that the tangent unit is fit to the clamp securely.

3) How to adjust

• As tightening the tangent unit clamp fully, fix the tangent unit with a screw.

4) Assembly


Replacement of H tangent unit

1) Preparation

• Perform disassembly as referring to “DISASSEMBLY PROCEDURE” (P. 5-3→5-5, 5-11).


• Replace the tangent unit. When installing, make sure that the tangent unit is fit to the clamp securely.

3) How to adjust

• As tightening the tangent unit clamp fully, fix the tangent unit with two screws.

4) Assembly

• Perform assembly in the reversed procedure of “DISASSEMBLY PROCEDURE” (P. 5-11, 5-5→5-3).

2

3

8. REPAIR OUTLINE

8-1 Repair Outline

GPT-3000 series servicing can be categorized as follows.

9. ANGULAR MEASUREMENT READING SYSTEM REPAIRS

10. PLATE SYSTEM REPAIRS

11. TELESCOPE (EDM) SYSTEM REPAIRS

Service the GPT-3000 series by replacing the faulty unit in the respective system.

The required adjustments will differ depending on the unit replaced.

Flow charts are provided to repair each system.

Follow the flow charts and execute the required adjustments.

Moreover, after completing the repair, follow the flow chart below for post-repair inspection.


9. ANGULAR MEASUREMENTREADING SYSTEM REPAIRS

11. TELESCOPE (EDM)SYSTEM REPAIRS

4. INSPECTION


Inspection completed


8-2 Setting and Adjustment Modes

The GPT-3000 series has the following setting and adjusting modes.

8-2-1 Parameter setting mode 1: Refer to P. 8-3.

8-2-2 Parameter setting mode 2: Refer to P. 8-4~8-6.

8-2-3 Adjustment mode: Refer to P. 8-7.

8-2-4 Factory mode: Refer to P. 8-8~8-18.

8-2-5 Loader mode: Refer to P. 8-19.


8-2-1 Parameter setting mode 1

After turning on the power, press the [F1] key on P.3/3 of the menu display. “PARAMETERS 1” is displayed.

Carry out setting as follows.

PARAMETERS 1 2/3 F1:ERROR CORRECTION

MENU 3/3 F1:PARAMETERS 1 F2:CONTRAST ADJ. P↓

PARAMETERS 1 1/3 F1:MINIMUM READING F2:AUTO POWER OFF F3:TILT P↓

PARAMETERS 1 3/3 F1:RS-232C

[F1]

[F4]


Refer to the instruction manual for the details of items and setting method.

Item

Item to be selected(Thick characters show the set value when shipped

from the factory.)GPT-3002/3003/3005 GPT-3007

MINIMUM READING

• ANGLE 1" / 5"0.2mgon / 1mgon0.01mil / 0.1mil

5" / 10"1mgon / 2mgon0.1mil / 0.2mil

• COARSE 1mm / 10mm0.005f (1/8in) / 0.02f (1in)

1mm / 10mm0.005f (1/8in) / 0.02f (1in)

AUTO POWER OFF ON / OFF ON / OFF

TILT ON/OFF X-ON / XY-ON / OFF X-ON / OFF

ERROR CORRECTION ON/OFF ON / OFF ON / OFF

BATTERY TYPE Ni-MH / Ni-Cd Ni-MH / Ni-Cd

HEATER ON / OFF ON / OFF

RS-232C PARAMETERS

BAUD RATE 1200, 2400, 4800, 9600, 19200, 38400

CHAR. / PARITY 7/EVEN, 7/ODD, 8/NONE

STOP BITS 1, 2

ACK MODE STANDARD, OMITTED

CR, LF ON, OFF

REC TYPE REC-A, REC-B

F2:BATTERY TYPE F3:HEATER P↓

P↓

[F4]

8-2-2 Parameter setting mode 2

Turn on the power as pressing the [F2] key, and “PARAMETERS 2” is displayed. “PARAMETERS 2” has

three kinds of setting pages and each page shows several items for setting. This repair manual describes the

displays and items to be selected. Use the instruction manual together for the details of items and setting

method.

* The displays and items may be changed because of version up, etc.

(1) UNIT SET

PARAMETERS 2 1:UNIT SET 2:MODE SET

UNIT SET 1/2 F1:TEMP. & PRES. F2:ANGLE

UNIT SET 2/2 F1:FEET

[F4]

[ESC]


* If the angle unit is locked with the factory mode, “F2: ANGLE” disappears and the subsequent items are

moved up.

* If the distance unit is locked with the factory mode, “F3: DISTANCE” disappears. If the unit [m] is locked,

“F1: FEET” also disappears.

(2) MODE SET

* In a model without the “DATA COLLECT” mode and “LAYOUT” mode, “F3: ESC KEY MODE” does not

exist.

* In a model without the “LAYOUT” mode, “F1: COORD. CHECK” does not exist.

* In a model without the laser plummet function, “F3: L.PL OFF TIME” does not exist.

3:OTHERS SET F3:DISTANCE P P[F1]

[F3] : To “(3) OTHERS SET”

[F2] : To “(2) MODE SET”

PARAMETERS 2 F1:UNIT SET F2:MODE SET F3:OTHERS SET

MODE SET 1/5 F1:POWER ON MODE F2:FINE/CRS/TRK F3:HD&VD/SD

MODE SET 2/5 F1:V ANGLE Z0/H0 F2:N-TIMES/REPEAT F3:TIMES OF MEAS P[F2]

MODE SET 4/5 F1:COORD. CHECK F2:EDM OFF TIME F3:FINE READING P

MODE SET 3/5 F1:NEZ/ENZ F2:HA MEMORY F3:ESC KEY MODE P[F4]

MODE SET 5/5 F1:OFFSET V ANG. F2:NON-PSM/PRISM F3:L.PL OFF TIME P [F4]

[F4]

[F4]

(3) OTHERS SET

PARAMETERS 2 F1:UNIT SET F2:MODE SET F3:OTHERS SET

OTHERS SET 1/5 F1:H-ANGLE BUZZER F2:S/A BUZZER F3:W-CORRECTION P

OTHERS SET 2/5 F1:NEZ MEMORY F2:REC TYPE F3:CR,LF P[F3]

OTHERS SET 4/5 F1:ACK MODE F2:GRID FACTOR F3:CUT & FILL P

OTHERS SET 3/5 F1:NEZ REC FORM F2:LAYOUT NEZ REC F3:LANGUAGE P[F4]

OTHERS SET 5/5 F1:ECHO BACK F2:CONTRAST MENU P [F4]

[F4]

[F4]


* In a model without the “LAYOUT” mode, “F2: LAYOUT NEZ REC”, “F2: GRID FACTOR” and “F3:

CUT & FILL” do not exist and the subsequent items are moved up.

* If the language selection is locked with the factory mode, “F3: LANGUAGE” does not exist and the subse-

quent items are moved up.

(4) Setting item

ItemSetting item

(Thick characters show the set value when shipped from the factory.)

TEMP. °C / °F

PRESS. hPa / mmHg / inHg

ANGLE DEG / GON / MIL

DISTANCE METER / FEET / FEET & inch

FEET US SURVEY / INTERNATIONAL

POWER ON MODE ANGLE MEAS. / DISTANCE MEAS.

FINE / CRS / TRK FINE / COARSE / TRACK


HD & VD / SD HD & VD / SD

V ANGLE V0/H0 Zenith 0 / Horizontal 0

N-TIMES / REPEAT N-TIMES / REPEAT

TIMES OF MEAS. 1

NEZ / ENZ NEZ / ENZ

HA MEMORY ON / OFF

ESC KEY MODE DATA COLLECT / LAYOUT / REC / OFF

COORD. CHECK ON / OFF

EDM OFF TIME 3

FINE READING 0.2mm / 1mm

OFFSET V ANGLE Free / Hold

NON-PSM/PRISM NON-PRISM / PRISM

L.PL OFF TIME(Only for Laser Plummet type)

-

H-ANGLE BUZZER ON / OFF

S/A BUZZER ON / OFF

W-CORRECTION 0.14 / 0.20 / OFF

NEZ MEMORY ON / OFF

REC TYPE REC-A / REC-B

CR, LF ON / OFF

NEZ REC FORM STANDARD / with RAW

MANUAL NEZ REC ON / OFF

LANGUAGE Consult with your selling agent.

ACK MODE STANDARD / OMITTED

GRID FACTOR USE G.F. / DON'T USE

CUT & FILL STANDARD / CUT & FILL

ECHO BACH ON / OFF

CONTRAST MENU ON / OFF

8-2-3 Adjustment mode

Turn on the power as pressing the [F1] key, and “ADJUSTMENT MODE” is displayed.

This chapter describes the details of the displays. Also refer to the description as mentioned in “13. ADJUST-

MENT MODE” (P. 13-1) and in the instruction manual.

ADJUSTMENT MODE 1/2 F1:V ANGLE 0 POINT F2:INST. CONSTANT F3:V0 AXIS P↓

ADJUSTMENT MODE 2/2

[F4]


F1:EDM CHECK

P↓

8-2-4 Factory mode

Turn on the power as pressing the [F2] and [ANG] keys, and the factory mode is set. This chapter explains the

displays and outline of the factory mode. Refer to the pages of adjustment for the detailed procedures and

contents.

<FACTORY>

[Ver. X.XX]

<FACTORY> LCD CONT

↓ ↑ --- ENTER

FACTORY MODE [1/6] 1:V ANGLE 0 OFFSET 2:TILT K,A 3:TILT OFFSET P↓

[F4]

1 2 3

After approx. 2 seconds [F4]/[ENT] or [ESC]


Display

• Press the power switch as pressing the [F2] and [ANG] keys, and the display appears. After approx. 2

seconds, the display appears automatically.

Display

• By operating the [F1]/[F2] or the [ ] ( )/[ANG] ( ) keys on this display, contrast of screen can be

adjusted.

• Press the [F4 (ENTER)], [ENT] or [ESC] key to go to the page of each item.

FACTORY MODE [4/6] 1:LANGUAGE SELECT 2:LANGUAGE LOAD 3:EDM PROG LOAD P↓

FACTORY MODE [3/6] 1:EDM VERSION 2:EDM OFFSET 3:LOCKS P↓

FACTORY MODE [2/6] 1:CCD CENTER/PWM 2:CCD REPEAT 3:CCD PHASE P↓[F4] [F4]

[F4]

FACTORY MODE [5/6] 1:EDM THROUGH 2:EEPROM INIT. 3:A/D CVT DATA P↓

FACTORY MODE [6/6] 1:SPECIAL SELECT 2:ANG CHECK MODE P↓[F4]

[ESC]

[ESC]

[ESC]

[F4] / [ESC]

[ESC]

6

7

5

8

4

1

1

2

2

Display

1) [F1] : Vertical angle zero position adjustment

This mode is used to adjust the vertical angle zero position.

• Press the [F1] (V ANGLE 0 OFFSET) key, and the vertical angle zero position adjustment mode is set.

• Collimate the horizontality of collimator and press the [F4 (ENTER)]/[ENT] key, and the V angle installa-

3


V : XXXﾟXX'XX" V0: XXXﾟXX'XX"OFS: XXXﾟXX'XX" --- --- --- ENTER[F1]

[F4] / [ESC]


tion offset data is decided. If the [ESC] key is pressed before deciding, the offset is not changed.

2) [F2] : Tilt coefficient input

This mode is used to input the tilt coefficient.

• Press the [F2] (TILT K, A) key, and the tilt coefficient input mode is set. (To the KA input mode)

• Press the [ ] ( ) or [MENU] ( ) key to input the digits and press the [ANG] ( ) or [ ] ( ) key to

input the numerical value.

• The displayed value can be cleared to “0” with the [F1] (CLEAR) key. Unless the [F4 (ENTER)]/[ENT]

key is pressed, the set value is not updated.


TILT VERTICAL [1/2] K = ■00000 A : 000000CLEAR --- --- ENTER

TILT VERTICAL [1/2] K : 000000 A = ■00000CLEAR --- --- ENTER[F2] [F4]

[F4]

TILT HORIZONTAL [2/2] K : 000000 A = ■00000CLEAR --- --- ENTER

TILT HORIZONTAL [2/2] K = ■00000 A : 000000CLEAR --- --- ENTER[F4]

[ESC]

[ESC]

[ESC]

[F4] / [ESC]

3) [F3] : Tilt installation offset

This mode is used to adjust offset of tilt.

• Press the [F3] (TILT OFFSET) key, and the tilt installation offset mode is set.

• In 3007, only “X (VERTICAL)” is used. After pressing the [F4 (ENTER)]/[ENT] key, return to the menu

selection display.


X(VERTICAL) TILT: XﾟXX'XX" tilt: XﾟXX'XX" SKIP --- --- ENTER

Y(HORIZONTAL) TILT: XﾟXX'XX" tilt: XﾟXX'XX" --- --- --- ENTER[F3]

[F1] / [F4] (2 axes)[ESC] [F4] / [ESC]

F4 (1 axis)


• In 3002/3003/3005, after setting the tilt of “X (VERTICAL)”, access the input display of “Y (HORIZON-

TAL)” with the [F4 (ENTER)]/[ENT] key. If you wish to omit the input of X tilt, you can access the input

display of Y with the [F1] (SKIP) key.

Display

1) [F1] : CCD center value setting

This mode is used to input the center value and integral time of the angular measurement reading CCD

(H1, H2, V1, V2) and to set the values of PWM and PAT.

• Press the [F1] key, and the “CCD CENTER/PWM” mode is set.

• Input the center value of each CCD (written on the seal adhered to the CCD unit) and integral time (05).

Measure the PWM value with the [F4 (ENTER)]/[ENT] key. Measurement can be omitted with the [F3]

(SKIP) key.

• After measurement, the PWM value and PAT data are displayed. If they are OK, shift to the measurement

of the next CCD with the [F3] key. (Standard : PWM...010~065 / PAT...17.7~19.2)

• When the PWM values of all (H1 → H2 → V1 → V2) are OK, “REC” is displayed.

4

FACTORY MODE [2/6] 1:CCD CENTER/PWM 2:CCD REPEAT 3:CCD PHASE P↓

H1 CENTER>1000CHARGE :00

INPUT --- SKIP ENTER

H1 CENTER:1000CHARGE :05

>Measuring...[F1]

[F4]

H2 CENTER>1000CHARGE :00


H1 CENTER:1000CHARGE :05PWM:XXX PAT:XX.X >OK ? [YES][NO][F3]

V1 CENTER:1000CHARGE :05PWM:XXX PAT:XX.X >OK ? [YES][NO]

< REC >

[F3]

[F4]

Measurement

Same as H1.

is ended.

2) [F2] : CCD continuous output

This mode is used to check the CCD waveform. You can check the change of waveform when the integral

time is changed. Even if the integral time is changed by this mode, the changed time is not stored.

• Press the [F2] key, and the “CCD REPEAT” mode is set.

• The integral time (CHARGE) and PWM value of each CCD are displayed. The integral time can be

changed with the [ANG] ( ) or [ ] ( ) key. Use the function keys to change the CCD.


H1 CHARGE:05PWM :00

H1 H2 V1 V2[F2]

[ESC]


3) [F3] : CCD angle measurement mode

This mode is used to perform trouble shooting before disassembly.

• Press the [F3] key, and the “CCD PHASE” mode is set.

• The phase allowance (a, b, c), integral time (CHRG) and coarse data of each CCD are displayed. Use the

function keys to change the CCD.

* Each of “a, b, c” means a pattern name of scale. (Pattern “a”, Pattern “b”, Pattern “c”) The numerical value

is changed 0~9 to show the pattern reading condition. (9: Best/0: Worst)

Display

1) [F1] : EDM version display

This mode is used to check the EDM version.

• Press the [F1] key, and the EDM version number is displayed for approx. 2 seconds.


H1 PHASE:a:X b:X c:X CHRG:XX XXXﾟXX'XX"X H1 H2 V1 V2[F3]

[ESC] The 3-digit error number isdisplayed.

5


<EDM>

[Ver.1.00][F1]

After approx. 2 seconds

2) [F2] : EDM OFFSET mode

• Press the [F2] (EDM OFFSET) key. Press the [F1] key, and the PRISM offset selection display appears.


EDM OFFSET 1:PRISM 2:NON-PRISM

EDM OFFSET 1:PRISM-SHORT 2:PRISM-LONG[F2] [F1]

[F1]~[F2]

EDM OFFSET 1:NON-PRISM-SHORT 2:NON-PRISM-MID 3:NON-PRISM-LONG

EDM OFFSET PRISM-XXXXX +00.0mmCLEAR --- --- ENTER

[F2]

EDM OFFSET NON-PRISM-XXXXX +00.0mmCLEAR --- --- ENTER [F1]~[F3]


Press the [F2] key, and the NON-PRISM offset selection display appears. Select a point to be inputted, and

each OFFSET input display appears.

• The value written already in EDM is displayed. If it is necessary to change the value, input a new offset

value in 0.1mm unit with the [ ], [ ], [ ] or [ ] key.

• After inputting, press the [F4] (ENTER) key to decide the data. The value can be changed to “00.0mm”

with the [F1] (CLEAR) key.

3) [F1] : LOCKS

3)-1 ANGLE LOCK

This mode is used to fix the angle unit.

• Press the [F3] key, and the “UNIT LOCK” mode is set.

• Press the [F1] key to access the angle unit change function ON/OFF mode.

• Select ON or OFF with the [F1] or [F2] key and decide it with the [F4] (ENTER) key. The data can be can-

celed with the [ESC] key.


LOCKS 1:ANGLE LOCK 2:DISTANCE LOCK 3:LANGUAGE LOCK

ANGLE UNIT LOCK [XXX]

[ON] [OFF] --- ENTER[F1]

[ESC] [F4] / [ESC]

[F1]

Current status: ON/OFF

3)-2 DISTANCE LOCK

This mode is used to fix the distance unit.


• Press the [F2] key to access the distance unit change function ON/OFF mode.



DISTANCE UNIT LOCK [XXX]


[ESC] [F4] / [ESC]

[F1]



• Select ON or OFF with the [F1] or [F2] key and decide it with the [F4 (ENTER)]/[ENT] key. The data can

be canceled with the [ESC] key.

3)-3 LANGUAGE LOCK

This mode is used to fix language.


• Press the [F3] key to access the language change function ON/OFF mode.

• Select ON or OFF with the [F1] or [F2] key and decide it with the [F4 (ENTER)]/[ENT] key. The data can

be canceled with the [ESC] key.

Display

1) [F1] : LANGUAGE SELECT

This mode is used to select language to show data on other displays except the factory mode.

(In the factory mode, only English is used.)

• Press the [F1] key, and the language selection mode is set.

• Select a language with the [F1] / [F3] keys or [ ] / [ ] keys and decide it with the [F4 (ENTER)]/[ENT]

key. The data can be canceled with the [ESC] key.



LANGUAGE [XXX]


[ESC] [F4] / [ESC]

[F1]


6

FACTORY MODE [4/6] 1:LANGUAGE SELECT 2:LANGUAGE LOAD 3:EDM PROG.LOAD P↓

LANGUAGE[1:ENGLISH ] 2:JAPANESE ENTER[F2]

2) [F2] : LANGUAGE LOAD

This mode is used to load a language file.

• Press the [F2] key, and the “LANGUAGE LOAD” mode is set.

2)-1 [F3] → [F1] / [F2] / [F3] : LANGUAGE 1/2/3

This mode is used to load a language file to the specified range.


LANGUAGE FILE LOAD 1:LANGUAGE1 2:LANGUAGE2 3:LANGUAGE3 P↓

LANGUAGE FILE LOAD 1:DELETE

3:BAUD RATE P↓[F3][F3]


• To load a language, finish setting at the data sending side (personal computer, etc.) first and then press the

[F1] (LANGUAGE1), [F2] (LANGUAGE2) or [F3] (LANGUAGE3) key. (Example: LANGUAGE1)

2)-2 [F3] → [F3] : BAUD RATE

This mode is used to set “BAUD RATE” when loading a language file.

• Press the [F4] key to access P.2. Press the [F3] key, and the baud rate setting display appears.

• Select baud rate with the [F2] (UP) / [F1] (DOWN) keys and decide it with the [ENTER] key. The setting

range is 2,400~38400 bps.

3) Loading of EDM program

This mode is used to load the EDM program.

• Press the [F3] key, and the EDM program loading mode is set.

• After the data sending side (personal computer, etc.) is ready, press the [F4] (START) key to start loading

the program.

• After the program is loaded, stop loading with the [STOP] or [ESC] key.


LANGUAGE FILE LOAD

LANGUAGE 1 LOADING[F1]/[F2]/[3]


LANGUAGE FILE LOAD 1:DELETE 3:BAUD RATE P↓[F3]

X-MODEM BAUD RATE

[38400]bpsDOWN UP --- ENTER[F3]


EDM PROG. LOAD

START

EDM PROG. LOAD

LOADING... STOP[F4]

[ESC] [F4] / [ESC]

[F1]

Display

1) Data through mode between EDM and outside

7


SELECT BAUD RATE F1:9600 F2:1200

FC-EDM DATA F9600 THROUGH TEST E9600FC :EDM:[F2] [F1] / [F2]

FC-EDM DATA F9600 THROUGH TEST E9600FC :XXXXXXXXXXEDM:XXXXXXXXXX

FC-EDM DATA F9600 THROUGH TEST E9600FC :XXXXXXXXXXEDM:

Data is sent from outside.


• Press the [F1] key, and the “EDM THROUGH” mode baud rate selection display appears.

• When baud rate is selected and then data is sent from outside (FC, etc.), the received data is displayed at the

third line and the data is sent to EDM without change.

• When data is sent from EDM, the received data is displayed at the fourth line and the data is sent to the out-

side without change.

2) EEPROM INITIALIZE mode

2)-1 ALL CLR

• Press the [F2] key, and the “EEPROM INITIALIZE” mode is set.

• Select “ALL CLR” with the [F1] key.

• Select [YES] or [NO] with the [F3] or [F4] key.

* Refer to P. 8-20 for the data to be initialized with “ALL CLR”.

2)-2 DATA CLR

• Press the [F2] key, and the “EEPROM INITIALIZE” mode is set.

• Select “DATA CLR” with the [F2] key.

• Select [YES] or [NO] with the [F3] or [F4] key.

* Refer to P. 8-18 for the data to be initialized with “DATA CLR”.

Data is sent from EDM.


EEPROM INIT. 1:ALL CLR 2:DATA CLR

ALL CLR

--- --- [YES] [NO][F1]

[ESC] [F3] / [F4]

[F3]

/ [ESC]


EEPROM INIT. 1:ALL CLR 2:DATA CLR

DATA CLR

--- --- [YES] [NO][F2]

[ESC] [F3] / [F4]

[F3]

/ [ESC]

3) A/D conversion value continuous display mode

• Press the [F3] key, and the “A/D CVT DATA” mode is set.

• The displayed data are as follows from the first line in order: reference voltage, internal battery voltage,

external battery voltage and temperature.

Display


Vref:FFFF( X.XXV)Vint:FFFF( X.XXV)Vext:FFFF( X.XXV)Temp:FFFF( XX.XXC)[F3]

[ESC]

8


1) Special selection mode * This mode is used only in the model with the laser plummet function.

• Press the [F1] key, and the “SPECIAL SELECT” mode is set.

1)-1 Laser plummet function ON/OFF selection * This mode is used only in the model with the laser plum-

met function.

• Press the [F1] key, and the laser plummet function ON/OFF selection mode is set.

• Select the laser plummet function ON or OFF with the [F1] or [F2] key and decide it with the [ENTER] key.

If you wish to cancel it, press the [ESC] key.

FACTORY MODE [6/6] 1:SPECIAL SELECT 2:ANG CHECK MODE

SPECIAL SELECT 1:LASER PLUMMET

[F1]

SPECIAL SELECT 1:LASER PLUMMET

LASER PLUMMET [OFF]


[ESC]

2) [F2]: Angular measurement check mode

FACTORY MODE [6/6] 1:SPECIAL SELECT 2:ANG CHECK MODE

ANG CHECK MODE 1:SPEED TURN 2:RESULT 3:ERASE FILE

SPEED TURN V :XXXﾟ X' XX" X-000 HR:XXXﾟ X' XX" X-000 ERR:

[F1]

ERASE FILE

--- --- [YES] [NO]

RESULT 001/00X V :XXXﾟ X' XX" X HR:XXXﾟ X' XX" X ERR:EXXX

[F2][F3]

[F2]


• Press the [F2] key, and the angular measurement check mode is accessed. Press the [F1] key to start mea-

surement. When measurement is completed, “Finish!” is displayed.

• Press the [F2] key, and the error result display appears. The error place is displayed. When there are two or

more errors, other error places are displayed with the [ ] or [ ] key. When there is no error, the original

display is reset after about 2 seconds.

• The integrated error results can be cleared by the [F3] key. Press the [F3] (YES) key, and the data are

deleted.

3) Initialization of Bluetooth (GPT-3000W only)

When the CPU unit of GPT-3000W is replaced, initialize Bluetooth.

• Press the [F2] key, and the “BLUETOOTH INIT.” mode is set.

FACTORY MODE [6/6] 1:SPECIAL SELECT 2:BLUETOOTH INIT. 3:ANG CHECK MODE

BLUETOOTH INIT. PLEASE WAIT!

BLUETOOTH INIT.:GTS230 AA0000>INITIALIZE OK ? 　--- --- [YES] [NO]

BLUETOOTH INIT. <NOW INITIALIZING!>

FACTORY MODE [6/7] 1:A/D CVT MODE 2:SPECIAL SELECT 3:BLUETOOTH INIT. P↓

[F3]

[F2]

The current device name andserial No. are displayed.(Check if they are correct.)

After approx.10 seconds

When initialization is ended,the factory mode displayappears again.


GPT-3000 Initialization table

In factory mode

DATA CLR ALL CLR

Normal mode

• Temperature/atmospheric correction, PPM set value

• Prism constant set value

• H angle offset value

• Tilt ON/OFF set value

• Instrument coordinate set value

• Instrument height/aimed height set value


: Initialized　 : Not initialized(Reference)

Initialization in memory manager of normal mode means initialization of the observation/coordinate data file

and PCODE library file. It has nothing to do with initialization of the non-volatile memory. When these data

files are damaged, an error message such as [MEMORY ERROR] is displayed.

• Contrast adjustment value

• Reticle illumination set value

• Parameter setting 1

• Grid factor set value

• Data Collect CONFIG. set value

• Observation/coordinate data communication protocol set value

Adjustment mode

• V ANGLE 0 POINT

• V0 AXIS

Parameter setting mode 2

• UNIT SET

• MODE SET

• OTHERS SET

Factory mode

• V angle offset set value

• Tilt K/A set value

• Tilt offset set value

• CCD CENTER/PWM value

• Angle/distance/language LOCK

• Language selection

• Laser plummet ON/OFF

8-2-5 Loader mode

Turn on the power as pressing the [F3] key, and the loader mode is set. In the loader mode, the main software

and language software are installed.

To install the softwares, the following tools are necessary.

1) Personal computer (PC)

2) Cable (Refer to the interface manual (option). It is not sold as a tool.)

3) Floppy disk including a new-version software

This manual explains the mode on the assumption that the reader understands how to set and operate a per-

sonal computer fully.

• How to start the Loader mode


Display ~

• Press the power switch as pressing the [F3] key, and the loader program starts and the start display appears.

• After the version display appears, the loader mode performs initialization .• The contrast adjusting display appears automatically. Adjust contrast with the [F1] or [F2] key and

access the loader menu display with the [F4] (ENTER) key.

TOPCON TOTAL STATION

<LOADER>

Ver.1.10

[F3] + [Power]

Loader Menu F1:Program Area F2:Data Area F4:Protocol

<LOADER> LCD CONT

DOWN UP --- ENTER

Now Initializing Please Wait !

After approx. 2 secondsAfter approx.

After approx. 3 seconds[F4](ENTER)

2 seconds

1 2 3

6 5 4

1 5

2

3 4

5

6

9. ANGULAR MEASUREMENT READING SYSTEM REPAIRS

9-1 How to Use the Angular Measurement System Unit Positioning Tools

9-1-1 Tools

The following tools are necessary for positioning the angular measurement system units (CCD unit and LED

unit).

Storage oscilloscope (ST-SY-04 or ST-SY-05)

Used to adjust the CCD signal when positioning the CCD unit and LED unit.

Note: Refer to the instruction manual of the oscilloscope for its function and operation.

CCD display tool (ST-AK-07)

1

2


Used to input the center value, to set the integral time and to check the angular measurement display when

positioning and adjusting each unit.

(H) angular measurement LED lighting tool (ST-CD-01)

Used as a tool LED when positioning the horizontal angular measurement LED unit.

Connecting cable (ST-GS-23)

Connects the CCD display tool to the (H) angular measurement LED unit cable.

Connecting cable (ST-GS-24)

Connects the CCD display tool to the (V) CCD unit cable.

(V) CCD lighting tool (ST-CD-02)

Used as a tool LED when positioning the vertical CCD unit.

3

4

5

6

9-1-2 How to connect the tools

Strage oscilloscope :Made by Tektronix.TDS-3032 (ST-SY-04)

TDS-3032B (ST-SY-05)Tool ON/OFF switch

CCD display tool(ST-AK-07)

Connecting cable(ST-GS-23 / ST-GS-24)


(1) Connect CH1 and CH2 of the storage oscilloscope (ST-SY-04 or ST-SY-05) to the terminals (CCD out and

TRG) of the CCD display tool. Connect the GND of the CH1/CH2 probes to the GND of the CCD display

tool.

(2) Connect the connectors of the (H) angular measurement LED lighting tool (ST-CD-01) and (V) CCD

lighting tool (ST-CD-02) to the CCD display tool.

(3) Connect the CCD display tool to the constant-voltage with the cable (ST-PK-02).

(4) Connect the connecting cables (H: ST-GS-23, V: ST-GS-24) to the CCD cable.

Lighting tool (ST-CD-01/ST-CD-02)

9-1-3 How to operate the CCD display tool (ST-AK-07)

F1 F2 F3 F4 ANG

ESC

POWER

MENU


(1) Operating procedure of factory modeIn (H)/(V) angular measurement adjustment, set and check the following values with the CCD display tool.

• (H1), (H2) and (V) angular measurement CCD center values (CENTER)

• Integral time (CHARGE)

• Pattern pitch (PAT)

• LED light intensity (PWM)

Procedure Key Operation Display Remarks

1 Turn on the power switch as pressing

the [F2] and [ANG] keys.

2 Press the [F4] key.


F2

POWER

ANG＋

＋

TOPCON GPT-3000

<FACTORY>LCD CONT ↓ ↑ --- ENTER

F4 FACTORY MODE [1/6] 1:V ANGLE 0 OFFSET 2:TILT K,A 3:TILT OFFSET

F4 FACTORY MODE [2/6] 1:CCD CENTER/PWM 2:CCD REPEAT 3:CCD PHASE

(2) Operating procedure when inputting the center valueExample: When the H1 center value “1000” is input


1 Set the factory mode [2/6].


FACTORY MODE [2/6] 1:CCD CENTER/PWM 2:CCD REPEAT 3:CCD PHASE

F1 H1 CENTER→1000



* When the H2 or V center value is

set, press the [F3] (SKIP) key to

change the display.




CHARGE :00


F1 H1 CENTER→_CHARGE :00

1234 5678 90.- [ENT]

F1 H1 CENTER→_CHARGE :00

(1) (2) (3) (4)

F1 H1 CENTER→1_CHARGE :00

1234 5678 90.- [ENT]

F3 H1 CENTER→1_CHARGE :00

(9) (0) (.) (-)


7 Press the [F2] key. (“0” is set.)

8 Repeat this procedure to input

“1000”.

F2

Inputrepeatedly.

H1 CENTER→10_CHARGE :00

1234 5678 90.- [ENT]

H1 CENTER→_1000CHARGE :00


9 Press the [F4] key to proceed to “(3)

Setting procedure of integral time

(CHARGE)”.

* Under this condition, don’t press

the [ESC] key or [F3] (SKIP) key.

If it is pressed, the input value is

not recorded.

1234 5678 90.- [ENT]

F4 H1 CENTER:1000CHARGE →00


(3) Setting procedure of integral time (CHARGE)“05” is set as a fixed value of integral time.


1 Input the integral time on the display

after setting the center value.

2 Press the [F1] key. (“0” is set.)

H1 CENTER=1000CHARGE →05


F1 H1 CENTER=1000



4 Press the [F1] key. (“5” is input.)

5 Press the [F4] key, and “05” is set and

the PAT and PWM values are auto-

matically calculated.

CHARGE →_

1234 5678 90.- [ENT]

F2 H1 CENTER=1000CHARGE →_

(5) (6) (7) (8)

F1 H1 CENTER=1000CHARGE →5_

1234 5678 90.- [ENT]

F4 H1 CENTER:1000CHARGE :05

>Measuring...

(4) Operating procedure when checking the pattern pitch (PAT)


1 Check the pattern pitch on the display

after setting the integral time.

• “PAT” shows the pattern pitch on

the right display.

Standard : 17.7 ~ 19.2


>Measuring...

H1 CENTER:1000CHARGE :05PWM:035 PAT:18.3 >OK ? [YES][NO]


(5) Operating procedure when checking the LED light intensity (PWM)


1 Check the LED light intensity on the

display after setting the integral time.

• “PWM” shows the LED light inten-

sity on the right display.

Standard : 10～ 65

2 When the pattern pitch (PAT) and

LED light intensity (PWM) are within

standard, press the [F3] (YES) key.

3 Press the [F3] (SKIP) key several

times to access 2/6 of the factory

mode.

* When adjusting the H2 CCD,

remove the H1 CCD from the tool

and input the set value of H2 on the

H1 setting display.

* If the [ESC] key is used instead of

the [F3] key in Procedure 3, the

input value is not recorded. End

the procedure with the [F3] key.


>Measuring...


F3 H2 CENTER→1000CHARGE :05


F3 FACTORY MODE[2/6]1:CCD CENTER/PWM2:CCD REPEAT3:CCD PHASE

(6) Setting of CCD continuous output (Repeat mode)Carry out this setting when positioning the (H) and (V) angular measurement units and when checking the

CCD signal waveform.


1 Access the factory mode.

2 Press the [F2] (CCD REPEAT) key.



(7) Setting of CCD angular measurement (Angle setting mode)

(Adjust the waveform under this set

condition for H and V.)


1 Access the factory mode.

2 Press the [F3] (CCD PHASE) (Angle

setting mode) key.

F2 H1 CHARGE:00PWM :38

H1 H2 V1 V2


F3 H1 PHASEa:X b:Y c:X CHRG:XX XXXﾟXX'XX"H1 H2 V1 V2

9-2 Angular Measurement System Unit Installation and Adjustment

9-2-1 (H) angular measurement system unit installation and adjustment

Note: The CCD waveform is influenced by the disturbing light. Darken the vicinity of the unit whenadjusting.


1 Recording the center valueThe seal on which the center value is written isadhered on the side of the holder of the (H) angu-lar measurement LED unit. Record this centervalue.


2 Temporary setting of (H) angular measurement

LED unit

Set the (H) angular measurement LED unit tem-

porarily with the screws (CR2.6×5). (Make sure

that the optical receiving face of the CCD unit

does not touch the scale.)

3 Connection

• Connect the (H) angular measurement LED unit

to the connecting cable (ST-GS-23) of the CCD

display tool.

• Connect the two probes of the storage oscillo-

scope (ST-SY-04 or ST-SY-05) to the terminals

of the CCD display tool.

• Connect the CCD display tool to the (H) angular

measurement LED lighting tool (ST-CD-01).

(H) angular measurementLED unit


4 Tool installation

Fit the (H) angular measurement LED lighting

tool (ST-CD-01) into the holder of the angular

measurement unit.

5 Setting of storage oscilloscope

Set the storage oscilloscope (ST-SY-04 or ST-

1

1


SY-05) as referring to the following figures.

Set the positions for the cursor 1 and 2 of the

storage oscilloscope according to the center

value written on the (H) angular measurement

LED unit.

(Example)

• When the center value is “1000”

At the same time the cursors 1 and 2 on the stor-

age oscilloscope show the following values.

Cursor 1=272µS, Cursor 2=1355µS





2

Cursor 1(272µs)

Contents of setting

Cursor 2(1355µs)


6 Setting of center value and integral time

Set the center value and integral time according to

“9-1-3 How to operate the CCD display tool (ST-

AK-07)” (P. 9-3~9-6).

• Center value: Value written on the each angular

measurement LED unit

• Integral time: Set “5”. (“5” is a fixed value.)

H1 CENTER:1000CHARGE :05 >Measuring...

Center value

Integral time


7 Check of pattern pitch (P. 9-7)

After inputting the center value and integral

time, the pattern pitch (PAT) is displayed by

operating the CCD display tool.

Make sure that the pattern pitch (PAT) is

within 17.7~19.2.

Note: When checking, make the condition asdark as possible by covering the instru-ment with a blackout curtain, etc.

8 Check of LED light intensity (P. 9-7)

The LED light intensity (PWM) is displayed

on the pattern pitch checking display.

Make sure that the PWM value is within

10~65 counts.


9 (H) angular measurement LED positioning adjust-

ment

Turn on the main switch of the CCD display

tool, and the tool LED is lit.

Set the continuous output mode (CCD

REPEAT) according to “9-1-3 How to operate

the CCD display tool (ST-TK-07)” (P. 9-8).

Adjust the volume of ST-CD-01 so that the

waveform of storage oscilloscope may be as

illustrated (Fig. 1).


1

2


Pattern pitch

1

2


Fig. 1

LED light intensity

Cursor 2Cursor 1

1

2


Move the (H) angular measurement LED unit

back and forth so that the start section ( ,

) of the CCD signal waveform may contact

with the cursors 1 and 2. (Fig. 2)


3

a

b a b


* When the unit is moved and the signals on both

sides ( , ) don't contact with the cursors 1

and 2, there is no problem under the illustrated

conditions (Fig. 3 and Fig. 4).

Condition of Fig. 3

The start section of CCD signal is protruded

outside by the same width as , against the cur-

sors and .

=

Condition of Fig. 4

The start section of CCD signal is proturded

inside by the same width as against the cursors

and .

=

Fig. 2 Cursor 2Cursor 1

a b

a

b

1 2

a b

ba


a

b

1 2

a b

ba



* If the waveform is as illustrated in Fig. 5 (the

deviation of waveform on both sides against the

cursors 1 and 2 is not uniform), it is NG.

Replace the unit.

Condition of Fig. 5

The start section of CCD signal is not uniform

against the cursors 1 to 2.

a b


10 Check of reading range

Set the positions for the cursors 1 and 2 of the

storage oscilloscope according to the center

value.

Refer to the following figure for setting.


At the same time the cursors 1 and 2 on the stor-

age oscilloscope show the following values.







1

Cursor 1(570µs)

Contents of setting

Cursor 2(1058µs)


Remove the CCD lighting tool from the holder

of the CCD display tool.

Set the continuous output mode (CCD

REPEAT) according to “9-1-3 How to operate

the CCD display tool (ST-TK-07)” (P. 9-8).


tool, and the LED is lit. At the same time the

waveform of storage oscilloscope is as illus-

trated (Fig. 6).

2

3

4

Reading range

Uniform illumination range


Make sure that the range in which the CCD

signal waveform is flat [uniform illumination

range] is within the reading range.


11 Check of CCD signal

Clean the scale.

Set the repeat mode (CCD REPEAT) accord-

ing to “9-1-3 How to operate the CCD display

tool (ST-AK-07)” (P. 9-8).

As turning the vertical axis, watch the screen

of the storage oscilloscope to check the CCD

or scale for dust or soil. If the CCD signal

waveform is not correct as illustrated (Fig. 7),

clean the face of the scale or CCD.


5

Cursor 2(1058µs)

Cursor 1(570µs) Fig. 6

1

2

3

Fig. 7

The signal is missing because of dust.


12 Check of angle display

Select the angle setting mode by operating the

CCD display tool. (P. 9-8)

Turn the center axis slowly and watch the

angle reading of the CCD display tool. Make

sure that there is no part whose angle is not

detected. (Example : --° --' --")

③ At the same time, make sure that the phase

allowance (Phases “a”, “b” and “c”) is not 3 or

1

2

H1 PHASE:a:9 b:8 c:8 CHRG:12 XXﾟXX'XX" H1 H2 V1 ---


less when rotation has stopped.

9-2-2 (V) angular measurement system unit installation and adjustment


1 Unit installation

Temporary setting of (V) CCD unit

• Set the (V) CCD unit temporarily with the 2

screws (CR2.6×6B).

Installation of (V) angular measurement

holder unit

• Install the (V) angular measurement holder unit

to the (V) CCD unit with the 2 screws (CR2×4

1

2

(V) angular measurement holder unit


with washer).

2 Tool installation

Connect the connecting cable (ST-GS-24) to the

cable of the (V) angular measurement holder unit.

3 Setting of storage oscilloscope

Set up the storage oscilloscope (ST-SY-04 or

ST-SY-05).

Refer to P. 9-10 for setting.

Set the cursors 1 and 2 according to the center

value.

(Set the cursors 1 and 2 on the storage oscillo-

scope to the following values.)

Cursor 1 = 272µS

Cursor 2 = 1355µS

Connecting cable(ST-GS-24)

1

2


4 Connection of (V) CCD lighting tool

Fit the (V) CCD lighting tool (ST-CD-02), which

is connected to the CCD display tool (ST-AK-07),

into the holder of the angular measurement LED

unit.


5 Setting of center value and integral time

Set the center value “1000”according to “9-1-

3 How to operate the CCD display tool (ST-

AK-07)” (P. 9-4~9-5).

After setting the center value, set the integral

time “5”.

6 Check of pattern pitch (P. 9-7)

After inputting the center value and integral

time, the pattern pitch (PAT) is displayed by

operating the CCD display tool (ENT key).

Make sure that the pattern pitch (PAT) is

within 17.7~19.2.


7 Check of LED light intensity (P. 9-7)

The LED light intensity (PWM) is displayed

on the pattern pitch checking display.

Make sure that the PWM value is within

10~65 counts.


(V) CCD lighting tool(ST-CD-02)

1

2

V1 CENTER:1000CHARGE :05 >Measuring...

Center value

Integral time

1

2

V1 CENTER:1000CHARGE :05PWM:035 PAT:18.3 >OK ? [YES][NO]

Pattern pitch

1

2

V1 CENTER:1000CHARGE :05PWM:035 PAT:18.3 >OK ? [YES][NO]

LED light intensity


8 (V) angular measurement LED positioning adjust-

ment


tool, and the tool LED is lit. At the same time

the waveform on the storage oscilloscope is as

illustrated. (Fig. 1)

1

Cursor 2Cursor 1(272µs) (1355µs)


Loosen the two mounting screws of the (V)

CCD unit.



tool (ST-TK-07)” (P. 9-8).

Move the angular measurement LED holder

left and right so that the start section ( , )

of the CCD signal may contact with the cur-

sors 1 and 2 as Fig. 2.

Notes:1. When the unit is moved and the start sec-

tion of the CCD signal does not contact withthe cursors 1 and 2, make adjustment withthe same standard (P. 9-12, 9-13) as the (H)angular measurement adjustment.

2. When checking, make the condition as darkas possible by covering the instrument witha blackout curtain, etc.

2

3FACTORY MODE [2/6] 1:CCD CENTER/PWM 2:CCD REPEAT 3:CCD PHASE P↓

Repeat mode

Fig. 1

4

a b

a b

Cursor 2Cursor 1(272µs) (1355µs)

Fig. 2


9 Adjustment of reading range

Remove the CCD lighting tool from the

holder.

Set the storage oscilloscope. (Refer to P. 9-13.)

Set the cursors 1 and 2 on the storage oscillo-

scope to the following values.

Cursor 1=570µS

Cursor 2=1058µS


1

2

3t

b b'

a'a

Reading range center

Uniform illumination range center

Reading range




tool (ST-AK-07)” (P. 9-8).


tool, and the LED is lit. At the same time, the

waveform of the storage oscilloscope is as

illustrated (Fig. 3).

Move the (V) angular measurement holder

unit left and right so that the uniform illumina-

tion range of the CCD signal waveform on the

storage oscilloscope is approximately at the

center in the reading range of the cursors 1 and

2. (Fig. 4)

a=a' b=b'

The reading range must be within theuniform illumination range.


4

Cursor 2Cursor 1Fig. 3

5

b b'a'a

= Reading range centerUniform illumination range center


Reading range



10 Check of CCD signal

Clean the scale.



tool (ST-TK-07)” (P. 9-8).

As turning the lens barrel, watch the screen of

the storage oscilloscope and check the CCD or

scale for dust or soil. If the CCD signal wave-

form is not correct as Fig. 5, clean the face of

1

2

3

The signal is missing beause of dust.


the scale or CCD.


11 Check of angle display

Set the angle setting mode according to “9-1-3

How to operate the CCD display tool (ST-TK-

07)” (P. 9-8).

Turn the lens barrel and watch the angle read-

ing of the CCD display tool. Make sure that

there is no part whose angle is not detected.

(Example : --° --' --")

At the same time, make sure that the phase

allowance (Phases “a”, “b” and “c”) is not 3 or

less.


Fig. 5

1

2

3

9-2-3 Tilt unit installation and adjustment


1 Unit installation

Set the tilt unit temporarily with a hexagonal

wrench (M2.5).

Note: Set the washers on the mounting surfacesof the tilt unit and standard.


2 Storing the tilt coefficients

Record the tilt coefficients (K, A) of the tilt unit to

be newly installed.

Tilt (A) unit

Tilt (B) unit


3 Tool connection

Connect the tilt pull-out cable (ST-GS-26) to the

tilt counter as illustrated.


4 Tilt positioning adjustment

Level the instrument and position the tilt unit.

Tightening torque: 90N·cm (9kgf·cm)

Standard: ±7 counts (difference between the nor-

mal and reverse)

5 Tilt coefficient input

After assembling the instrument, input the tilt

coefficients (K, A) of the newly-installed tilt.

(Refer to P. 8-9.)

6 Tilt offset input

Input the tilt offset. (Refer to P. 8-10.)

Tilt (B) unit

Tilt (A) unit

9-3 Horizontal Angle Round Rotation Check

Whether "angle error" occurs in the horizontal angle rotation or not is checked here.

After the angular measurement system has been repaired, carry out this check.

To check "angle error" in vertical angle rotation, turn the lens barrel unit manually. You can check it in the

same way as the horizontal angle rotation.

(Necessary tools)

• Horizontal angle round rotation tool (ST-HK-02)

• Constant-voltage power supply (ST-PS-01)

9-3-1 Preparation for checking

Procedure Operation Illustration and display


(1) Set the product on the horizontal angle round

rotation tool (ST-HK-02).

Notes:• When setting the product, release the hori-

zontal motion clamp.• Set the horizontal tangent screw against the

stopper of the horizontal angle round rota-tion tool.

• Connect the motor cable to the constant-voltage power supply.

(2) Open [6/6] in the factory mode.

Refer to the operation procedure (P. 8-17).

(3) Press the [F2] key to select “ANG CHECK

MODE”.

Stopper Horizontal angle round rotation tool(ST-HK-02)

FACTORY MODE [6/6] F1:SPECIAL SELECT F2:ANG CHECK MODE

F2 ANG CHECK MODE F1:SPEED TURN F2:RESULT F3:ERASE FILE

9-3-2 Horizontal angle round rotation check and measurement


(1) Press the [F1] key to select “SPEED TURN”.

The values in the right display are as follows.

• 2nd line: V angle data

• 3rd line: H angle data


SPEED TURN V : 90ﾟ00'00"0-000 HR: 180ﾟ00'00"0-000ERR:

[F1]


• 3-digit value at the right: Times of error

occurrence

(2) Set the constant-voltage power supply to

3.0V±0.1V and turn on the power. The

motor of the round rotation checking tool

starts.

* When checking the V angle, the V value is

renewed by turning the lens barrel manu-

ally and slowly.

(3) When one round H angle rotation is com-

pleted, the renewal of the HR angle on the

display stops and “Finish” is displayed on

the 4th line.

Note: If the data on the display are as follows,there is no problem.• “000” is displayed as times of error

occurrence at the right 3-digit valueplace.

• The value of “ERR:” is not dis-played.

• When checking the V angle, “Fin-ish” is not displayed even if oneround rotation is done.

SPEED TURN V : 90ﾟ00'00"0-000 HR: 220ﾟ00'00"0-000ERR:

(During the round rotation,the HR value is renewed inthe linkage operation.)

SPEED TURN V : 90ﾟ00'00"0-000 HR: 180ﾟ00'00"0-000ERR:　　 Finish!

(Measurement completion display)

(4) When an error of H angle has occurred, the

following data are displayed on the screen.

When an error has occurred during measure-

ment, the following values are displayed on

the screen.

• 3-digit value at the right:

Times of error occurrence

• 4th digit:

Error number is displayed.


SPEED TURN V : 90ﾟ00'00"0-000 HR: 220ﾟ00'00"0-001ERR:632

(H angle is being measured.)

Error number Times of error occurrence


(5) When one round H angle rotation is com-

pleted, the renewal of the HR angle on the

display stops and “Finish” is displayed on

the 4th line.

(Details of the H angle error)

• When “002” is displayed at the right 3-digit

position of “HR”, it means “error has

occurred at 2 places”.

• When “E632” is displayed, refer to

“ERROR CODE TABLE”.

SPEED TURN V : 90ﾟ00'00"0-000 HR: 180ﾟ00'00"0-002ERR:632　　 Finish!

9-3-3 Display of measurement result

When the H angle error has occurred in measurement, check the details of the result.


(1) Press the [F2] key on [6/6] of the factory

mode to select “RESULT”.

In the case of the result display, one piece of

error information is shown on one display. (The


RESULT 001/002 V : 90ﾟ00'00"0

[F2]


displays in the right show that two errors have

occurred.)

(Example)

• On the right display, “E632” has occurred at

the H angle [220° 00' 00"].

• On the right display, “E631” has occurred at

the H angle [40° 00' 00"].

(Deletion of the result storage file)

To delete the file in which the measurement result

is stored, follow the procedure as shown below.

(1) Press the [F3] key on [6/6] of the factory

mode to select “ERASE FILE”.

(2) To delete the file, select “YES”. Not to

delete the file, select “NO” or [ESC].

[ ↑ ]or

[ ↓ ]

HR: 220ﾟ00'00"0ERR:632

RESULT 002/002 V : 90ﾟ00'00"0 HR: 40ﾟ00'00"0ERR:631

[↓ ] or [↑ ]


ERASE FILE

--- --- [YES][NO]

[F3]


10-1 Nomenclature

Dis

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uni

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30 2

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1) (6

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play

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10-2 Angular Measurement Digital System Repairs

Servicing is to be executed by replacing the respective unit.

After replacing the main CPU unit, it is necessary to set the information required for angular measurement

reading.

* Information to be set : Input the center value and integral time, and make sure that the integral time and the

values of PWM and PAT are within standard. If these data are not set, normal opera-

tion cannot be guaranteed.

* Necessary tools : Constant-voltage power supply (ST-PS-01), power cable (ST-PK-02) and synchroscope

(ST-SY-04 or 05)

Procedure Display Remarks


1 PreparationRemove the battery beforehand.Remove the left cover.Set the power supply to DC8.5V±0.5V.Connect the power cable to the instru-ment.Set the factory mode. (Turn on the poweras pressing the [F2] and [ANG] keys.)

2 Press the [F4] key twice to set [2/6] page.

3 Select “1:CCD CENTER/PWM”.

4 Input “CENTER” (center value) in the orderbeginning with H1. If it is not necessary tochange the data, shift to “CHARGE” withthe [ENT] key. (The center value is writtenon each of CCD units.)

The “→” mark shows theposition which can bechanged.

5 Input “5 counts” to “CHARGE” (integraltime).

6 Press the [ENT] key. The instrument sets thevalues of PWM and PAT automatically anddisplays the results. Make sure that the val-ues are within standard. If the values areOK, press the [YES] (F3) key. If they areNG, press the [NO] key.

* StandardPWM: Within 10~65counts (Count for con-trolling the LED lightintensity)PAT: Within 17.7~19.2counts (Pattern pitch)* If the value is NG,

check the CCD wave-form and CCD unit.(Fig. 1 in P. 6-15, etc.)

7 Carry out the above 2~4 for other CCDunits.

1

2

3

4

5 <FACTORY> LCD CONT

↓ ↑ --- ENTER


H1 CENTER→0960 CHARGE :05

INPUT --- SKIP P↓

H1 CENTER:0960 CHARGE :05PWM:042 PAT:18.4 >OK ? YES NO

(Example)

Procedure Display Remarks

8 Select “3: CCD PHASE” (F3) and check the

angular measurement operation.

* Standard

Values of a, b and c: 4

counts or more when the

instrument is stationary

If the value is 3 counts or

less, check the CCD

waveform and CCD unit.

(P. 6-15)

The instrument must dis-

H1 PHASEa:9 b:8 c:9 CHRG:06 321ﾟ 36' 07" H1 H2 V1 ---


play angles correctly.

9 Operate the [F1]~[F3] keys and select the

displayed CCD unit. Check other units. On

“CCD REPEAT”, you can check the CCD

angular measurement waveform with the pin

on the CPU unit. There is one kind of check

pin. By changing the [F1]~[F3] keys, you

can check each unit.

(Check pin and its signal)

• TP1: GND

• TP2: Connect to TG (trigger signal) ~CH2

of synchroscope.

• TP3: Connect to the CCD output~CH1 of

synchroscope.

10 Make sure that all the procedures have ended

without problem and then turn off the power.

Example of good waveform :

Refer to Fig. 6 in P. 9-14.

TP1

TP3

TP2

10-3 Setting of Integral Time

After replacing and adjusting the parts of the angular measurement reading system including the angular mea-

surement main PCB, angular measurement CCD unit and scale, it is necessary to set the integral time as

shown below. If this setting is not done properly, the product does not operate correctly.


1 As pressing the [F2] and [ANG]

keys, turn on the power switch.F2

POWER

ANG＋

＋

TOPCON GPT-3000



3 Press the [F4] key. The factory mode

[2/6] is displayed.

4 Press the [F1] key to access “1: CCD

CENTER/PWM”.

5 Input the H1 center value (CENTER)

and integral time (CHARGE “05”)

and press the [F4] (ENTER) key.

The center value is

described on each

CCD unit.

The integral time

“05” is a fixed

value.

<FACTORY>LCD CONT ↓ ↑ --- ENTER

F4 FACTORY MODE [1/6] 1:V ANGLE 0 OFFSET 2:TILT K,A 3:TILT OFFSET

F4 FACTORY MODE [2/6] 1:CCD CENTER/PWM 2:CCD REPEAT 3:CCD PHASE

F1 H1 CENTER→1000CHARGE :00


F4

After input-ting the val-

ues

H1 CENTER→_1000CHARGE :05

>Measuring...

6 The values of PWM and PAT are

automatically calculated. Make sure

that they are within the standard and

press the [F3] (YES) key.

Standard: PWM 10~65

PAT 17.7~19.2

If the values of

PWM and PAT are

out of standard,

the scale, CCD

unit or LED unit

may be dirty (or

installed improp-

erly). Check the

units and perform

the procedure


F3 H1 CENTER:1000CHARGE :05PWM:XXX PAT:XX.X >OK ? [YES][NO]


again.

7 After the input of H1, the H2 input

display appears. Input the values in

the same way for H2 and V according

to Procedure 5 and 6.

GPT-3007 does not

have H2.

8 When the values of H1, H2 and V are

inputted and they are within the stan-

dard, the [REC] display appears and

recording of the set values are ended.

H2 CENTER→1000CHARGE :00


F3 V1 CENTER :1000CHARGE :05PWM:XXX PAT:XX.X>OK ? [YES] [NO]

　　　＜REC＞

10-4 Check for Bluetooth Communication (GPT-3000W only)

By using DK-7W, check the communication with GPT-3000W.

10-4-1 Setting of "SELECT COM" at the GPT-3000W

Set “BLUETOOTH” in “SELECT COM” with “Parameter setting mode 1” of GPT-3000W.

TOPCON GPT-3000W V : 94ﾟ19'00" HR: 172ﾟ02'40" OSET HOLD HSET P↓

MENU F1:DATA COLLECT F2:LAYOUT F3:MEMORY MGR. P↓[MENU]

1 2 3


Check for PIN code/Bluetooth address number

Check the address number of the Bluetooth unit from “PARAMETERS 1”.

The Bluetooth address number (12 digits) is written in the seal of the Bluetooth unit attached to the inside of

the left cover unit. (Refer to P. 5-35)

PARAMETERS 1 3/3 F1:RS-232C F2:SELECT COM F3:BLUETOOTH P↓

PARAMETERS 1 1/3 F1:MINIMUM READING F2:AUTO POWER OFF F3:TILT P↓

MENU 3/3 F1:PARAMETERS 1 F2:COTRAST ADJ. P↓[F1]

SELECT COM[F1:BLUETOOTH ] F2:RS-232C ENTER

[F2]

Select “BLUETOOTH” with the[F1] key or arrow key and set itwith the [F4] or [ENTER] key.

Select “SELECT COM” withthe [F2] key.

[F4] Twice

[F4] Twice

456

7

MENU 3/3 F1:PARAMETERS 1 F2:COTRAST ADJ. P↓

PARAMETERS 1 3/3 F1:RS-232C F2:SELECT COM F3:BLUETOOTH P↓

BLUETOOTHADDR. :XXXXXXXXXXXXPIN CODE :1111INPUT --- --- ENTER

Check the PIN code and Bluetoothaddress number on this display.Default of PIN code is “1111”.(The PIN code set currently isdisplayed.)

Bluetooth address number

[F2][F4] Twice

(Above procedure )4

10-4-2 Check for communication

Check the communication of the Bluetooth unit built in the instrument (GPT-3000W).

In fact, use DK-7W to check communication.

1) Setting of the display on the instrument (GPT-3000W)

2) Check for communication by operating DK-7W

TOPCON GPT-3000W V : 94ﾟ19'00" HR: 172ﾟ02'40" OSET HOLD HSET P↓


SELECT MODE F1:CONNECT ↓■

SEARCH ■■■■■■ FOUND＊　■

Press the [F2] key, and search starts.

　　　 FOUND [1/1]００１１２２３３４４５５　■

• After searching, the found Bluetoothunit under standby condition forconnection is displayed.

• Select the address of the Bluetoothunit to be connected with the arrow(up/down) keys of DK-7W.(Record the address number.)

RENAME？ [ＹＥＳ] [ＮＯ]　■

-------------　　LINK？　　　■

[F4]

[F2]

[ENT]

　　　 CONNECTING　 ■■■■■■■・・

CONNECT　ＯＫ

When connection is completed,“CONNECT OK” is displayed onDK-7W.

Press the [ENT] key, andconnection with the Bluetoothunit under standby conditioinstarts.

CONTROL MODE　　　　　　　　　　　■

Press the [F1] key on DK-7W.

The display of GPT-3000W is changed. Make sure that it is under remotecontrol.The GPT-3000W side is under remote control. So, when Bluetooth isconnected, the Logo mark ( ) of Bluetooth is displayed at the right centeron the screen. (Refer to the illustration below.)

V : 94ﾟ19'00" HR: 172ﾟ02'40"

OSET HOLD HSET P1↓

TOPCON DK-7W

[ENT]

Approx. 2seconds

Completed.

(Turn on the power of DK-7W.)


Short buzzer sound

11. TELESCOPE (EDM) SYSTEM REPAIRSRepairing is to be executed by replacing the respective unit.

The telescope consists of the following major components: base unit, objective lens unit, optical receiving

unit, D-OSC PCB, EDM amplifier unit, optical emitting pipe unit and LP unit.

Adjustments and inspections will differ depending on the unit to be replaced. Follow the flow chart below

when executing adjustments and inspections.

Replacement of base unitReplacement of objective lens unitReplacement of optical emitting pipe unit

Replacement of optical receiving unit Replacement of LP unit


EDM amplifier unit

Adjustment of optical axis atthe optical emitting side

Replacement of D-OSC PCB

Adjustment of optical axis atthe optical receiving side

Adjustment of laser pointeroptical axis

EDM general adjustment

Replacement of circular unit

Prism/Non-prism modeOffset measurement/input

11-1 Nomenclature

LP unit

Optical emitting pipe unit

Objective lens unit

EDM base unit


Circular unit

Optical receiving unit EDM amplifier unit

D-OSC PCB

11-2 Nomenclature and Functions of Units

1) D-OSC PCB

This PCB calculates the distance measurement data, etc. by controlling the EDM base, the PLD optical

emitting timing, the LP lighting, the circular unit and the optical receiving timing to control all the dis-

tance measurement operations.

2) EDM amplifier unit

This unit receives and amplifies the feeble PLD pulse reflected by the outside to generate an optical

receiving timing signal and performs sampling.

3) EDM base unit

This unit changes the distance measurement light generated by the PLD unit by NP/P to change the inside/

outside light paths.


4) Optical receiving unit/Circular unit

The received light intensity is adjusted by the circular unit and then the circular unit is connected to the

amplifier unit via the fiber.

5) LP unit

This unit emits the laser beam for LP.

11-3 EDM General Adjustment

11-3-1 Preparation for general adjustment

1) Tools to be used

(1) Oscilloscope Tektronix TDS3032 (ST-SY-04) or TDS3032B (ST-SY-05)

(2) SW tool for GPT-1000 (ST-PT-05) or RS-232C BOX (ST-PT-30)

This is used for communication between a personal computer and the instrument. The communica-

tion PCB is built in the SW tool for GPT-1000 and so it is not necessary to purchase a new RS232C

BOX.

Warning: When you repair a unit, do not see the distance measurement light (the light from the PLD unit)and the LP light directly. Your eyes may be injured.


(3) Digital connecting cable II (ST-PT-14)

This cable is used to connect the SW tool or RS232C BOX to the D-OSC PCB.

(4) DS signal coaxial cable (ST-PT-03)

(5) Non-reflection filter (ST-3K-03)

(6) DOS/V personal computer

(7) Tool software (DMEasy 6) (ST-3K-09)

(8) F4 cable (This is a TOPCON product.)

(9) P measured distance checking filter (ST-3K-06)

(10) NP measured distance checking filter (ST-3K-05)

(11) Offset prism (ST-3K-04)

2) Lens barrel cover removal

Remove the upper/lower lens barrel covers according to the disassembly procedure.

3) Setting of the instrument

Carry out the following setting before adjustment.

Tilt : OFF (Menu → Parameter setting mode 1)

EDM off wait : 99 (F2 + Power ON Parameter setting mode 2)

Distance display : SD (F2 + Power ON Parameter setting mode 2)

Auto. Cutoff : OFF (Menu → Parameter setting mode 1)

After adjustment, reset the above to the original status.

1

2

3

4

4) Connection of tools

Carry out connection according to Fig. 1.

Note: Before connecting the SW tool, check if the coaxial cable of the PLD unit is connected to theD-OSC unit.If the power is turned on while the coaxial cable is open, the PLD unit is damaged.

ch1 ch2 ext

Oscilloscope


DS

SL

DS signal

Main amplifier

Digital connecting cable II

SW tool or RS232C BOX

F4 cable

Fig. 1

Main amplifier TP3

Main amplifier TP5D-OSC

RS232CD-OSC CN9

COM1

Main amplifier

CN4

coaxial cable II

Trigger

VR1

CN4 (DS)

TP3 (SL)TP5

TP (GND)

(Trigger)

CN9(To personal computer)

Fig. 3 Main amplifier PCBFig. 2 D-OSC PCB

CN5 Not used.

5) Switch Tool

“Switch Tool” is provided in DMEasy6 for checking the operation of circular, etc. This “Switch Tool” is

operated on the personal computer.


(1) Light Intensity Detection

This switch turns on/off the function detecting and adjusting properly the light intensity with the “1”

key.

When the function is OFF, the instrument exits from the Switch Tool menu but, while the light inten-

sity detection function is kept OFF (the light intensity is not adjusted by circular), the instrument mea-

sures distance.

(2) Gain

This switch selects "HIGH" or “LOW” for the amplification rate of the amplifier unit with the “2” key

and at the same time changes the light path. “H” is used for non-prism mode and “L” for prism mode.

(3) Chopper

This switch selects inside or outside light path for the EDM base chopper with the “4” key.

In : Inside light path

Out : Outside light path

(4) EDM CIR (E)

This switch rotates the EDM circular normally or reversely. Press the “E” key to indicate the current

circular position against the zero detection position.

6) Oscilloscope

Use the TDS3032 or TDS3032B for repairing the GPT-3000 series. Don't use the external trigger channel

(EXT) of TDS3032/B.

If one of other oscilloscopes or the external trigger is used, it is not possible to measure the noise quantity

(amplitude) accurately.

Fully understand the instruction manual of oscilloscope before using. This manual is written on the

assumption that the reader fully understands the setting and operation of the oscilloscope.

Notes:Execute self-calibration once a week. (Refer to the instruction manual.)Execute warm-up for 10 minutes or more before using.Regard the set values of the oscilloscope as reference. Understand the instruction manual fully

1

2

3


and then adjust to the values in the oscilloscope to check waveforms easily. The contents of set-ting is changed according to the version of oscilloscope.TDS3032B is a successive model of TDS3032.

7) DMEasy6

DMEasy6 is an EDM adjusting software used exclusively for GPT-3000 which operates under the condi-

tion of Windows95, 98, 2000 and ME, XP.

DMEasy6 is supplied in CD-ROM. Refer to the instruction manual packed together for setting up.

The environmental conditions required for a personal computer for DMEasy6 are as follows.

(1) OS must be Windows 95/98/2000/ME/XP.

(2) CPU must be equivalent or superior to Pentium 200MHz.

(3) COM1 must be a communication port for GPT-3000.

(4) CD-ROM/FD drive must be installed.

4

11-3-2 Ref light intensity adjustment

Adjust the light intensity of the inside light path when zero detection is done.

To adjust Ref-ND, loosen the fixing screw and then turn the groove on the ND circumference by hitching it

with a bamboo spit, etc.

Groove


1) Set the oscilloscope as referring to the display of 5). Connect CH1 to TP3 and CH2 to TP5.

2) Turn on the power of the instrument and press the [ ] (distance measurement) key.

3) Select “7: Switch Tool” on the main menu of DMEasy6.

4) Set the light intensity detection to “OFF”, “Chopper” to “In” and “Gain” to “L”.

5) Adjust Ref-ND so that the SL signal is 1.15V (1.05 ~ 1.25).

6) Set “Gain” to “H”.

7) Make sure that the SL signal is within 1.0 ~ 1.4V.

8) If the SL signal is out of the proper range, adjust to the proximate upper limit value (1.4) or the proximate

lower limit value (1.0). (Adjust the SL signal level when “Gain” is at “H”.)

9) When readjustment is done, set “Gain” to “L” and make sure that the signal is within 1.05 ~ 1.25V.

If it is NG, only the base unit must be adjusted. (The TOPCON head office should adjust it.)

Ref-ND

1.15V

11-3-3 Optical noise waveform check

The quantity of the optical noise (internal reflection) is checked.

* Caution before measurement

Before measurement, check if the DS signal coaxial cable is disconnected or connected improperly and if

the non-reflection filter is damaged or soiled.

• Measurement of noise waveform (amplitude) and phase waveform

A. Noise waveform measurement

1) Set the oscilloscope as referring to the display of 6). Connect CN4 (DS signal) of the main amplifier to

CH1 by using the probe and DS signal coaxial cable. Connect TP5 (trigger signal) of the main amplifier to


CH2.

2) Install the non-reflection filter to the black-colored ring on the lens barrel.

3) Turn on the power of the instrument and press the [ ] (distance measurement) key.

4) Select “6: Optical noise [Floppy]” on the main menu of DMEasy6.

5) Select “1) Optical noise state”.

6) Noise waveform is observed on the oscilloscope. When the waveform is stable, press the “STOP” key to

stop the waveform.


Standard of noise quantity is 10mV or less. If noise quantity is 10mV or less, press the [ESC] key to finish

the noise measurement. If noise quantity is beyond 10mV, remove its cause and then perform the proce-

dure again from the first.

The cause may be as follows:

1. The non-reflection filter is installed wrongly or its inside is dirty.

2. The DS coaxial cable II is disconnected.

3. When assembling, the cable of the EDM electric system comes out on the front of the dichroic Ass’y

and interrupts the light path.

4. The EDM base unit malfunctions.

* Set “50 mS” for “Persist Time”.

11-3-4 Zero cross adjustment

The error of the distance measurement value caused by the change of the received light intensity is adjusted.

In fact, by using the Switch Tool of DMEasy6, the light intensity of the outside light path is changed by three

kinds (1.2V, 0.7V and 2.0V) and VR is adjusted so that the distance measurement value of each light intensity

may be within the range.

1) Set the oscilloscope as referring to the display of 5). Connect TP3 (SL signal) of the main amplifier to

CH1 and TP5 (trigger signal) of the main amplifier to CH2.

2) Face the lens barrel to the vicinity of zenith and put an offset prism (ST-3K-04) or a prism on it.

3) Measure the slope distance continuously in the prism mode.

4) Select “1. Zero cross adjustment” of DMEasy6.


5) Access the Switch Tool menu with the Tab key. Set “Chopper” (“4” key) to “Out”, turn the EDM circular

(EDM CIR) with the “C” and “V” keys and set the light intensity (SL signal) to “1.2V”. Move the prism to

fit to “1.2V” correctly. (Note: After adjusting to 1.2V, do not move the prism.)


* Set “50 mS” for “Persist Time”.

The illustration below shows the relation between the “Zero cross adjustment” menu of DMEasy6 and the

Switch Tool.

Main menu

1. Zero cross

2. • • • • •

3. • • • • •

Measurement display

Switch tool

"1"

Tab or ESC


6) Obtain the distance measurement value when the light intensity of the outside light path is 1.2V.

Exit from the Switch Tool menu with the Tab key, and the instrument starts distance measurement.

Press the “S” key, and the distance measurement value is taken into the personal computer and the

average value of 10 measurements is displayed.

This value is D1.2.

Measurement starts.

Chopper [4]

"S"

ESC

1

2

7) Obtain the distance measurement value when the light intensity of the outside light path is 0.7V and make

adjustment.

Access the Switch Tool menu of DMEasy6 and fit the light intensity of the outside light path to 0.7V

(0.7 ~ 0.8) by rotating the EDM circular.

1


Note: The SL signal 0.7V is the limit of the distance measurement. If the voltage is set to less than0.7V, difference occurs in the measurement values.

Exit from the Switch Tool menu with the Tab or ESC key, and the instrument starts distance measure-

ment.

2

Make adjustment by turning VR1 of the main amplifier so that the distance measurement value on the

display unit of the instrument may be 1mm lower than D1.2 (Note). By turning VR1, the distance

measurement value is changed as shown below.

Note: This aimed value is different between the instruments. Regard the value as standard.

3

D2.0

D0.7

D1.2 Turn VR1.

nce

mea

sure

men

t val

ue


Press the “S” key, make measurement 10 times and record the average value. This value is D0.7.

8) Obtain the distance measurement value when the light intensity of the outside light path is 2.0V.

In the same way as D1.2 and D0.7, obtain the distance measurement value when the light intensity of the

outside light path is 2.0V (1.9~2.0). Don’t turn VR1.

This value is D2.0.

If the difference between D2.0 and D0.7 is 1mm or less, proceed to the next step 10). If the difference is

more than 1mm, return to 7) and perform the procedure again. Fit the distance measurement value to the

middle value between D2.0 and D0.7.

9) Measure D1.2 again.

Obtain the distance measurement value when the light intensity of the outside light path is 1.2V.

0.7V 1.2V 2.0VLight intensity of outside light path

Dis

ta

4

10) Compare D0.7, D2.0 and the remeasured D1.2. If the result is as follows, it is successful.

* The difference between D0.7 and D2.0 is within 1mm and the maximum difference between 3 points is

within 10mm. When only inspection is done, measure D2.0 and D0.7. If the difference is within

10mm, it is successful.

11) Return to the main menu of DMEasy6 with the ESC key and turn off the power of the instrument.


11-3-5 Laser pointer output adjustment


1 • Power meter (ST-TP-07N)

• Digital multimeter

Connect the above to TP9 and TP-G1 of the D-

OSC PCB.

2 Turn on the power of the instrument and light up

LP with the star key. (Lighting status)


3 Set the power meter sensor against the LP light on

the front of the objective lens and measure the

optical emitting power of LP. (The waveform of

the power meter is set to 690nm.)

4 To adjust the output, turn VR1 so that the value of

the power meter may fit to the standard. (Turn

VR1 clockwise to increase the output.)

Adjustment standard: 0.9 ±0.05mW

Note: The voltage of the digital multimetermust not be less than the voltage valueattached to LD. LD may be damaged.

TP-G1 (GND)

VR1

TP9

D-OSC PCB

Digital multimeter: Minus side

(for adjusting the laser output)

Digital multimeter: Plus side

11-4 Adjustment of Optical Axis on Optical Receiving Side

: Indicates the direction of moving or adjusting.

: Indicates the specified place.


1 Set the instrument on the optical axis adjusting

collimator and remove the eyepiece cover. Then,

install the reticle lighting tool.


2 Turn on the power of the reticle lighting tool. Fit

the optical axis of the instrument to the reference

position on the monitor screen. (Adjust the colli-

mation axis to the “0” position.)

3 Install the optical receiving lighting tool adapter

(ST-3K-07) onto the optical receiving fiber end

and set it onto the optical axis adjusting light

source II for GPT-2000 (ST-PT-20).

Reticle lines of the instrument


4 Turn on the power of the lighting tool. Adjust the

optical image on the monitor screen to the refer-

ence position.

Reference position (Center position of the optical

receiving axis)

Vertical direction:

Same as the collimation axis.

Horizontal direction:


Position where 1/6 (approx. 40") of the opti-

cal image diameter is moved to the left from

the collimation axis (The direction in which

the optical receiving unit is moved to the left)

Note: The optical image diameter is changedbecause of the voltage inputted to thetool, the camera setting, etc. Adjust theinput voltage and make the above adjust-ment where the optical image is smallest.

When you use a camera with the electronic line

function, it is convenient to set it as above

beforehand.

When the electronic line function is not pro-

vided, measure the optical image diameter on the

monitor. Then, draw the scale lines as shown

below on the OHP sheet and use it.

5 Move the optical receiving unit up and down or

right and left to adjust the position.

Note: In adjustment, do not move the opticalreceiving unit in the rotating direction.Before adjustment, remove the circularunit.

Adjustment standard:

Within 1/10 (24") of the optical image diameter

(Approx. half the distance between the refer-

ence line and the collimation line)

Screw tightening torque: 4kgf·cm (40N·cm)

1/6


6 When the optical image is out of focus (the outline

blurs as shown at the right), loosen the fixing

screw and pull in/out the fiber for adjustment.


11-5 Adjustment of Optical Axis on Optical Emitting Side

: Indicates the direction of moving or adjusting.

: Indicates the specified place.


1 Preparation

After adjusting the optical receiving axis, install

the EDM amplifier unit and D-OSC PCB.

Set the instrument on the optical axis adjusting

collimator and remove the eyepiece cover. Then,


install the reticle lighting tool.

2 Turn on the power of the reticle lighting tool. Fit

the optical axis of the instrument to the reference

position on the monitor screen. (Adjust the colli-

mation axis to the “0” position.)

3 Turn on the power of the instrument and access

the distance measurement mode. (Measure dis-

tance in the NP mode.)

The NP light is seen as two lines as shown at the

right.

(Note: The inclination of the lines may be differ-

ent between the products.)

Reticle lines of the instrument


4 Adjust the non-prism light to the reference posi-

tion with the EDM optical axis adjusting screw.

Vertical direction adjustment:

Make adjustment so that the length of the

upper and lower lines may be uniform.

Adjustment standard: Within ±30"

(when the collimation axis is at “0”)


Horizontal direction adjustment:

Make adjustment so that the center between

the two lines may be at “0”.

Screw tightening torque: 2.5kgf·cm (25N·cm)

5 When adjusting the optical axis, adjust the focus

together. Adjust the relay lens to where the line

outline is clearest.


6 Change NP measurement to P measurement.

Check the prism light on the monitor and measure

the deviation.


7 When the deviation quantity checked in Procedure

6 exceeds the following adjustment standard,

adjust the prism light to the reference position

with the prism optical axis adjusting screws (4

pcs.).


(when the collimation axis is at “0”)


Make adjustment so that the 4 screws can be tight-

ened uniformly.

Actual image on the monitor

Non-prism light Prism light

11-6 Adjustment of Laser Pointer Optical Axis


1 Preparation

Set the instrument on the optical axis adjusting

collimator and remove the eyepiece cover.

Then, install the reticle lighting tool.

Turn on the power of the reticle lighting tool.

Fit the optical axis of the instrument to the ref-

erence position on the monitor screen. (Adjust

the collimation axis to the “0” position.)

1

2


2 Turn on the power of the instrument and light up

the LP.

3 Adjust the LP light to the collimation axis with the

LP optical axis adjusting screw.



11-7 Adjustment of Point Guide


1 Put the instrument at a position about 10m away

from the tool reflection sheet (ST-PG-01).

2 Connect the tool power cable (ST-3K-11) to the

point guide connection unit.21mm 21mm

0 0

A B

Within 2'

Tool reflection sheet

Within 2'


3 Collimate the center of the tool reflection sheet.

4 As illustrated, the borderline of the light emitted

from the left of the instrument must overlap the

line “A” and the borderline of the light emitted

from the right must overlap the line “B”. Adjust

the unit properly.

Adjustment standard:

Within 2' for outside

0 for inside

(Approx. 10 lines of the sheet = Approx. 2')

5 After completing the adjustment, apply the screw

lock (red) to the fixing screw and the contact place

of the unit and lens barrel.

DC 5V

Point guide

Tool power

Constant-voltage

connection unit

cable

Screw lock (red)

LED frame unit

12. INSTALLATION OF SOFTWARECarry out version up of software as follows.

(1) Check the version of the instrument's software which is the object of version up.

(2) Make preparations for the receiving (instrument with old software) side.

(3) Make preparations for the sending (instrument or new software of PC) side. → Perform sending.

(4) Start installation. (Reception starts.)

(5) End installation. (Check the version.)

12-1 How to Check Version

Check the version of the instrument's software in the following way.



1 As pressing the [MENU] key, turn on

the power.

Ver. X.XX:

Version of main

software

XXXX at the

upper right:

Check sum

jpX.XX:

Version of Japa-

nese software

CNX.XX:

Version of Chi-

nese software

KRX.XX:

Version of Korean

software

2 Press the [F1] (EXIT) or [ESC] key,

and the normal display appears.

POWER

＋

MENU TOPCON GPT-3000

[Ver.X.XX]

Ver. X.XX XXXX jpX.XX CNX.XXEXIT KRX.XX

F1

ESC

or

V : 90ﾟ00'00"HR: 180ﾟ00'00" 0SET HOLD HSET P1

12-2 Installation of Main Software(New Software of PC → Old Software of Instrument)

When you can prepare a FD including the new version, connect PC to the instrument with the F-4 cable.

Then, the new version software can be installed from PC to the instrument.


1 Connect the instrument (old version) to PC with

the F-4 cable.


2 Preparation at the instrument side

Start the instrument with the loader mode (P.8-20)

and set “38400bps” for the communication speed

(Protocol).

* The default is set at “38400bps”. Decide the

value with the [ENTER] (or [F4]) key.

If others except “38400bps” are set, set

“38400bps” with the [F1] (DOWN) or [F4] (UP)

key and then decide it.


X-Modem Protocol

[38400]bps DOWN UP --- ENTER


3 Preparation at the PC side

Load the FD (floppy disk) including the instal-

lation software into PC.

* Consult with TOPCON or selling agent for the

installation software.

Open Explorer and click the drive in which the

FD is loaded. (Fig. 1)

1

2


Access Directory (Fig. 2) and start

“GTSLOAD.exe”.

On Fig. 3, check the filename, path, Port and

Speed and then press the [Send] button at the

right of the software to be installed.

Example:

When only the main software is installed, put a

check mark in the check box at the left of Pro-

gram, check the filename and make sure that

“Com1” is set for Port and “38400” for Speed.

Then, press the [Send] button beside the filename

of Program.

Fig. 1

3

Fig. 2

4

Fig. 3


4 Installation

Press the [F1] (Program Area) key on the

loader mode menu display at the instrument

(old version) side. (Fig. 4)

Press the [F1] (Load) key on the Program

Area selection display. (Fig. 5)

1Loader Menu F1:Program Area F2:Data Area F4:Protocol

Fig. 4

2 Program Area F1:Load F2:Send


Press the [F1] (Program Load) key on the

Load display (Fig. 6), and the main software

installation starts. (Refer to the displays at the

PC and instrument sides.)

Display at the PC side Display at the instrument side

Fig. 5

3 Load F1:Program Load F2:Language Load F3:Font Load

Fig. 6

Program Loading

Load Success

12-3 Installation of Main Software(New Software of Instrument → Old Software of Instrument)

It is possible to install the software from the instrument with the new version software to the one with the old

version software.This chapter will explain the installation between the instruments.


1 Connect the instrument (new version) to another

(old version) with the P1 cable.


2 Preparation at the receiving side (old version)

Start the instrument with the loader mode (P.

8-20) and set “76800bps” for the communica-

tion speed (Protocol).


loader mode menu display at the instrument

(old version) side. (Fig. 1)

1

2


X-Modem Protocol



Fig. 1


Press the [F1] (Load) key on the Program

Area selection display. (Fig. 2)

Press the [F1] (Program Load) key on the

Load display (Fig. 3). The standby display

appears. (Fig. 4)

3

4

Program Area F1:Load F2:Send

Load F1:Program Load F2:Language Load F3:Font Load

Fig. 2

Fig. 3


3 Preparation at the sending side (new version)

Start the instrument with the loader mode and

set “76800bps” for the communication speed

(Protocol).


loader mode menu display. (Fig. 5)

Press the [F2] (Send) key on the Program Area

selection display. (Fig. 6)

Select a function key corresponding to the

kind of file to be sent, and installation starts.

For example, when the [F1] (Program) key is

selected, the display as Fig. 8 appears.

Program Loading

Fig. 4

1Loader Menu F1:Program Area F2:Data Area F3:Protocol

X-Modem Protocol


2

3

4

Program Send F1:Program F2:Program&Language F3:Program&Lang.&Font

Program Send

Program Area F1:Load F2:Send


Fig. 5

Fig. 6

Fig. 7

Fig. 8

13. ADJUSTMENT MODE

13-1 Normal and Reverse Collimation Vertical Zero-point Adjustment

If a target A is collimated by normal and reverse telescopes and the total of the two vertical angles does not

reach 360°, regard half the total as an error. Therefore this adjustment is required.


1 Level the instrument with the plate

level.


2 Turn on the power as pressing the

[F1] key.

3 Press the [F1] (V ANGLE 0 POINT)

key.

4 Collimate the target A with the nor-

mal telescope.

5 Press the [F4] (ENTER) key. The

normal vertical data is stored.

6 Collimate the target A with the

reverse telescope.

7 Press the [F4] (ENTER) key. The

reverse vertical data is stored. The

normal and reverse data are used to

calculate the correction, which is

stored.

F1

POWER

＋ADJUTMENT MODE 1/2 F1:V ANGLE 0 POINT F2:INST. CONSTANT F3:V0 AXIS P↓

F1 V0 ADJUSTMENT (STEP-1) FRONT V: 90ﾟ00'00" ENTER

F4

V0 ADJUSTMENT (STEP-2) REVERSE V: 270ﾟ00'00" ENTER

F4

<SET!>

V :270ﾟ10'20"HR:120ﾟ30'40" 0SET HOLD HSET P1↓


8 Again collimate the target A with the

normal and reverse telescopes. Make

sure that the total of the two angles is

360°.

9 Turn off the power. POWER


13-2 EDM Instrument Constant Input


1 Turn on the power as pressing the

[F1] key.

2 Press the [F2] key to select “INST.

CONSTANT” of “ADJUSTMENT

MODE”.

F1

POWER

＋

F2 ADJUTMENT MODE 1/2 F1:V ANGLE 0 POINT F2:INST. CONSTANT F3:V0 AXIS P↓


3 Select a constant to be inputted

(changed).

4 After selecting as above, select a

point. Select a point to be inputted.

5 When accessing each point, the cur-

rent value is displayed.

To input (change) a value, press the

[F1] key.

To return to the preceding display,

press the [ESC] key.

F1

F2

orINST. CONSTANT SET F1:PRISM F2:NON-PRISM

F1

F2

F3

or

or

INST. CONSTANT SET F1:PRISM-SHORT F2:PRISM-LONG

Prism input point

Non-prism input point

INST. CONSTANT SET F1:NON-PRISM-SHORT F2:NON-PRISM-MID. F3:NON-PRISM-LONG

F1

INST. CONSTANT SET PRISM-SHORT 0.2 mmINPUT --- --- ENTER


6 The numerical value input display

appears.

For inputting a numerical value, refer

to “2.6 How to Enter Alphanumeric

characters” of the instruction manual.

7 After completing the input, press the

INST. CONSTANT SET PRISM-SHORT = mm1234 5678 90.- [ENT]

F4 ADJUTMENT MODE 1/2


[F4] key. The data is inputted.

When the input is completed, the ini-

tial display of “ADJUSTMENT

MODE” is reset.

• Offset input at the 1.5m point

To input for the 1.5m point in the

non-prism mode, connect the instru-

ment to the personal computer with

the F4 cable and input a value with

the special software.

8 Turn on the power in the factory

mode.

9 Select “9600” of "EDM THROUGH"

in “FACTORY MODE [5/6]”.

F1:V ANGLE 0 POINT F2:INST. CONSTANT F3:V0 AXIS P↓

ANG

POWER

＋

F2＋


F1

F1

FACTORY MODE [5/6] 1:EDM THROUGH 2:EEPROM INIT 3:A/D CVT DATA P↓

SELECT BAUD RATE F1:9600 F2:1200

FC-EDM DATA F9600 THROUGH TEST E9600FC :EDM:


10 Start the software at the personal

computer side.

Press “W”, and the input display

appears. You can check the value

inputted with “R”.

GPT-3000 NP(1.5) Verx.xx

R) Read NP(1.5) W) Write NP(1.5)

Q) Quit

Display on PC


11 Input the offset value of “1.5” accord-

ing to the instructions on the PC

screen.

12 Press the [RETURN] key, and the

offset value is inputted into the

instrument.

NP (1.5)[mm]=

R) Read NP(1.5) W) Write NP(1.5)

Q) Quit

Display on PC

14. APPENDICES

14-1 EDM Cable Arrangement


As illustrated, arrange the cables and install the

head amplifier fixing plate.


Cab

le A

rran

gem

ent

Side A

Circular flexible cable

Prism motor cable

Chopper motor cable

Head amplifier cable

Side B

LED cable

PG • LP cable

Communication cable

Open air motor cable

PLD driver cable

Power cable

PLD coaxial cable

A

B

1

2

3

4

4 1 3 2

1

2

3

4

5

6

7

1256 347


Side A

Circular flexible cable

Prism motor cable

(3-pin: red and black)

Chopper motor cable

(2-pin: red and blue)

Head amplifier cable

(6-pin)

Head amplifier coaxial cable

1

2

3

4

5

2 3 1 4 5


Cab

le A

rran

gem

ent

Side B

LED cable

(2-pin: blue and black)

PG • LP cable (7-pin)

Communication cable (5-pin)

Open air motor cable (4-pin)

PLD driver cable

(3-pin: red, black and blue)

Power cable

PLD coaxial cable

1

2

3

4

5

6

7

7

6

21

543

14-2 Repair Tool List

Item Tool Part No. Application Remarks

Dis

asse

mbl

y To

ols Main unit Flexible wrench ST-TK-17

Torque screwdriver ST-BA-06 Right/left metal and tilt unit installation

Torque screwdriver ST-DA-45 Vertical axis unit installation and removal

Telescope Objective lens pulling tool ST-DA-14 Objective lens unit installation and removal

Objective lens plate wrench ST-DA-13 Objective lens unit installation and removal

Black-colored ring turner ST-DA-12 Black-colored ring installation and removal

Angular measurement

(H) angular measurementLED lighting tool

ST-CD-01 (H) angular measurement adjustment

(V) CCD lighting tool ST-CD-02 (V) angular measurement adjustment

CCD display tool ST-AK-07 (H)/(V) angular measurement adjustment

Connecting cable ST-GS-07 (H) angular measurement position adjustment


Adj

ustm

ent T

ools

Connecting cable ST-GS-24 (V) angular measurement position adjustment

Tilt pull-out cable ST-GS-06 Tilt positioning adjustment

Power cable ST-PK-02 Power supply

Distance measurement

DS signal coaxial cable ST-PT-03 EDM general adjustment

Digital connecting cable II ST-PT-14 EDM general adjustment

Red circular image positionchecking adapter (for smalldiameter)

ST-PT-15 Red circular image position checking

CCD monitor ST-PT-21 Used to check the red circular image position.Made by Tokyo Electronics: Model No.9VM10A

CCD objective lens ST-PT-22 Used to check the red circular image position.Made by Nikon: Focal distance 50mm: F (1.8)

Red circular image positionchecking adapter (for largediameter)

ST-PT-23 Used to check the red circular image position.

Red circular image positionchecking filter

ST-PT-24 Used to check the red circular image position.

RS232C BOX ST-PT-30 EDM general adjustment

Digital oscilloscope ST-SY-05 Made by Tektronix: TDS3032B

CCD camera ST-PT-31 Used to check the red circular image position.Made by Tokyo Electronics: CS3330B

Reticle lighting tool ST-3K-01 Used to check and adjust the distance mea-surement system optical axis.

*

Objective lens ×5 ST-3K-02 Used to check and adjust the distance mea-surement system optical axis. Used to changeto the collimator with the laser product CCD.

*

Non-reflection filter ST-3K-03 EDM general adjustment *

Offset prism ST-3K-04 EDM general adjustment *

NP measured distance check-ing filter

ST-3K-05 Used to check the NP distance measurementperformance.

*

Optical receiving lighting tool ST-3K-07 Optical receiving axis adjustment *

Optical axis adjusting wrench ST-3K-08 Prism optical axis adjustment *

DMEasy6 ST-3K-09 EDM general adjustment *

Light intensity adjusting filter ST-3K-10 Used to adjust the optical axis and check thered circular image position. 1% filter: 5 pcs.Size : 50×50With the small diamter collimator adapter

*

14-3 Adhesives and Application Locations

Collar:Screw lock 1401

Collar:Screw lock 1401


Packing joint: Silicone (KE-347T)

Packing joint:Silicone (KE-347T)

14-4 Lubricants and Application Locations

(1) Plate unit

Joint unit: K-2Piston unit: SH-33


V ring: NB-52

Vertical clamp unit: MG-28

Horizontal clamp unit: K-2

V ring: NB-52

Steel ball: K-2

Vertical axis: K-4

V ring: NB-52

Center cover: SH-33M

(2) Lens barrel unit

Internal Ass'y:MG-28

Washer: SH-33M


Objective unit:SH-33M

V ring: SH-33M

Focusing ring: SH-33M

14-5 Specifications

TelescopeLength : 150mm

Objective lens : 45mm (EDM 50mm)

Magnification : 30×

Image : Erect

Field of view : 1° 30'

Resolving power : 2.8"

Minimum focus : 1.3m

Reticle illumination : Provided


Distance measurementMeasurement range

Non-prism mode

Prism mode

Condition 1: Sight haze with visibility about 20km (12.5miles) moderate sunlight

with light heat shimmer.

Measurement accuracyNon-prism mode (Diffusing Surface)

1.5 to 25m (5 to 82ft) : ± (10mm) m.s.e.

25m or more (82ft or more) : ± (5mm +2ppm × D) m.s.e.

D : Measuring distance (mm)

Prism mode

: ± (3mm +2ppm × D) m.s.e.

D : Measuring distance (mm)

Laser class for distance measurement : Class 1(IEC Publication 825)

: Class I(FDA/BHR 21 CFR 1040)

Least Count in Measurement

Fine measurement mode : 1mm (0.005ft.) / 0.2mm (0.001ft.)

Coarse measurement mode : 10mm (0.02ft.) / 1mm (0.005ft.)

Tracking measurement mode : 10mm (0.02ft.)

Measurement Display : 12 digits : max. display 99999999.9999

TargetAtmospheric conditions

In low light condition and without sun glare on target

Kodak gray card(White surface)

1.5m to 250m (5 to 820 ft)

PrismAtmospheric conditions

Condition 1

1 prism 3,000m (9,900ft)

Measurement Time

Fine measurement mode : 1mm : Approx. 1.2sec. (Initial 3 sec.)

0.2mm : Approx. 3 sec. (Initial 4 sec.)

Coarse measurement mode : Approx. 0.5sec. (Initial 2.5 sec.)

Tracking measurement mode : Approx. 0.3sec. (Initial 2.5 sec.)

(The initial time will be different by a condition and

setting EDM off time. )

Atmospheric Correction Range : -999.9 ppm to +999.9 ppm, in 0.1 ppm increments

Prism Constant Correction Range : -99.9 mm to +99.9 mm, in 0.1 mm increments

Coefficient Factor : Meter / Feet

International feet 1meter = 3.2808398501 ft.

US SURVEY feet 1meter = 3.2808333333 ft.


Electronic Angle MeasurementMethod : Absolute reading

Detecting system

Horizontal angle

GPT-3002/3003/3005 : 2 sides

GPT-3007 : 1 side

Vertical angle : 1 side

GPT-3002 : 2 sides

GPT-3003/3005/3007 : 1 side

Minimum reading

GPT-3002/3003/3005 : 5" / 1" (1mgon / 0.2mgon) reading

GPT-3007 : 10" / 5" (2mgon / 1mgon) reading

Accuracy (Standard deviation based on DIN 18723 )

GPT-3002 : 2" (0.6mgon )

GPT-3003 : 3" (1mgon )

GPT-3005 : 5" (1.5mgon )

GPT-3007 : 7" (2mgon )

Measuring time : Less than 0.3 sec.

Diameter of circle : 71mm

Tilt Correction (Automatic index)Tilt sensor

GPT-3002/3003/3005 : Automatic vertical and horizontal compensator

GPT-3007 : Automatic vertical compensator

Method : Liquid type

Compensating Range : ±3'

Correction unit : 1" (0.1mgon)

OthersInstrument height : 176mm (6.93in) Base unit detachable

(Height from the tribrach dish to the center of telescope)

Level sensitivity

Circular level : 10'/2mm

Plate level

GPT-3002/3003/3005 : 30"/2 mm

GPT-3007 : 40"/2 mm

Optical Plummet Telescope

Magnification : 3×

Focusing range : 0.5m to infinity

Image : Erect


Field of view : 5° (φ114mm/1.3m)

Laser pointer

Light source : L.D (Visible laser)

Wavelength : 690nm

Output : 1mW maximum

Laser class : Class 2(IEC Publication 825)

: Class II(FDA/BHR 21 CFR 1040)

Laser Plummet (only for Laser plummet type)

Light source : L.D (Visible laser)

Wavelength : 633nm

Output : 1mW maximum

Laser class : Class 2(IEC Publication 825)

: Class II(FDA/BHR 21 CFR 1040)

Dimension : 336 (H) × 184 (W) × 174 (L) mm

(13.2 (H) × 7.2 (W) × 6.9 (L) in)

Weight

Instrument

(with battery) : 5.1kg ( 11.2 lbs)

(without battery) : 4.8kg ( 10.6 lbs)

Plastic carrying case : 3.2kg ( 7.1 lbs)

(Weight of the carrying case may be slightly different

due to specific market.)

Durability

Protection against water and dust : IP66 (with BT-52QA)

(Based on the standard IEC60529)

Ambient Temperature Range : -20°C to +50°C (-4°F to +122°F)

Battery BT-52QA (This battery does not contain mercury.)Output voltage : 7.2 V

Capacity : 2.7 AH (Ni-MH)

Maximum operating time (when fully recharged) at +20°C (+68°F)

Including distance measurement : 4.2hours (5,000 points)

Angle measurement only : 45hours

Weight : 0.3kg ( 0.7 lbs)

Battery Charger BC-27BR / BC-27CRInput voltage : AC 120V(BC-27BR), AC 230V(BC-27CR)

Frequency : 50/60Hz

Recharging time (at +20°C /+68°F)


Battery BT-52QA : 1.8 hours

Discharging time (at +20°C /+68°F)

Battery BT-52QA : 8 hours (in case of full charge)

Operating temperature : +10°C to +40°C ( +50°F to +104°F)

Charging signal : Red lamp illumination

Refreshing signal : Yellow lamp illumination

Finishing signal : Green lamp illumination

Weight : 0.5kg (1.1 lbs)

• Battery using time will vary depending on environmental conditions and operations done with GPT-3000

series.

14-6 Precaution When Charging or Storing Batteries

The capacity of battery will be affected and its service life shortened in any of the following cases while it is

recharged, discharged or stored.

14-6-1 Recharging

Fig. 1 shows how ambient temperature at recharging is related to charging efficiency or how it affects the dis-

charge capacity. As seen from the figure, charging at normal temperature is best, and the efficiency decreases

as the temerature rises. It is best, therefore, to always recharge the battery at normal temperature to obtain full

use of battery capacity and enjoy maximum operation per charge. And the service life of your battery will be

shortened if it is frequently overcharged or recharged at high temperature.

(Note: 0.1C charge means that the battery is recharged with 0.1-time current against its capacity.)


14-6-2 Discharge

Fig. 2 shows the discharge temperature characteristics. Discharge characteristics at high temperature are the

same as those at normal temperature. The battery is likely to have the reduced discharge capacity as well as

lower discharge voltage when discharged at low temperature. And the service life of your battery will be

shortened if it is greatly overcharged.

(Note: 1C discharge means one with 1-time current over battery capacity.)

100

120

80

60

40

20

00 10 20 30 40 50 60Cha

rgin

g ef

fici

ency

(di

scha

rge

capa

city

(%

))

Ambient temperature when charging (°C)Fig. 1 Recharging

0.1C charge

Discharge : 0.2, E.V.=1.0VTemperature at discharge : 20°C

120

100

80

60

40

20

0-20 0 20 40 60

Dis

char

ge c

apac

ity

(%)

Ambient temperature (°C)Fig. 2 Discharge

Charging: 0.1C×16 hoursCharging temperature: 20°C

0.2C discharge

1C discharge

14-6-3 Storage

See Fig. 3 for how storing period at different temperature levels is related to the remaining capacity. The bat-

tery will lose its capacity as storage temperature rises and the storage period increases. This does not mean,

however, that the battery performance is damaged when the battery is stored. The battery, reduced in capacity,

will be restored once it is recharged. Always recharge your battery before use. And recharge and discharge

the battery 3 or 4 times to restore its capacity if it has been stored for a long period or at high temperature.

Storing at high temperature can adversely affect the service life of your battery.

Your battery has been fully charged before leaving the factory, but its capacity may be affected considerably

when it takes several months to reach you, if it is stored at high temperature area or passes through a high-tem-

perature region. Then, the battery must be recharged and discharged 3~4 times to fully restore its capacity.

And the battery should always be stored at normal temperature or lower if it will not be used for any long


period. This helps your battery have a longer service life.

100

80

60

40

20

00 1 2 360�C 45�C

20�C

0�C

Rem

aini

ng c

apac

ity

ratio

(%

)

Storing period (month)

Fig. 3 Storage

Charging: 0.1C×16hoursDischarge: 0.2C, E.V.=1.0V

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TOPCON KOREA CORPORATION2F Yooseoung Bldg., 1595-3, Seocho-Dong, Seocho-gu, Seoul, 137-876, Korea.Phone: 82-2-2055-0321 Fax: 82-2-2055-0319 www.topcon.co.kr

TOPCON OPTICAL (H.K.) LIMITED2/F., Meeco Industrial Bldg., No. 53-55 Au Pui Wan Street, Fo Tan Road, Shatin, N.T., Hong KongPhone: 2690-1328 Fax: 2690-2221 www.topcon.com.hk

TOPCON CORPORATION BEIJING OFFICERoom 8A Poly Plaza Building, 14 Dongzhimen Nandajie,Dongcheng District, Beijing, 100027, ChinaPhone: 10-6501-4191~2 Fax: 10-6501-4190

TOPCON CORPORATION BEIRUT OFFICEP. O. BOX 70-1002 Antelias, BEIRUT-LEBANON. Phone: 961-4-523525/961-4-523526 Fax: 961-4-521119

TOPCON CORPORATION DUBAI OFFICEC/O Atlas Medical FZCO., P. O. Box 54304, C-25, Dubai Airport Free Zone,UAEPhone: 971-4-2995900 Fax: 971-4-2995901

IRELAND OFFICEUnit 69 Western Parkway Business Center

Phone: 01460-0021 Fax: 01460-0129Lower Ballymount Road, Dublin 12, Lreland

TOPCON ESPAÑA S.A.

TOPCON CORPORATION75-1 Hasunuma-cho, Itabashi-ku, Tokyo 174-8580, JapanPhone : 3-3558-2520 Fax : 3-3960-4214 www.topcon.co.jp

Printed in Japan 0408-25TO 1

GPT-3000 Repair Manual

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