FM SERIES - 3-mtr.info · Key Element Description 1 AC IN & FUSE 110 VAC input and Fuse 10A 2...

HANDBOOK

BROADCAST FM EXCITERSFM25EFM50EFM150E

FM SERIES

PTEK

Limited WarrantyPTEK (SELLER) warrants that products are free from defects in material and workmanship and meet

performance specifications provided, however, that:

(A) SELLER’ liability under this Warranty is limited to repairing or replacing, at its option, any

product delivered here under not conforming to this Warranty;

(B) This Warranty is limited to a period of two years;

(C) Minor deviations from specifications which do not affect performance are excluded from this

Warranty; and

(D) SELLER shall be liable under this Warranty only if:

(1) It is promptly notified in writing by the Buyer upon discovery of the failure of any product to

conform to this Warranty,

(2) The product is returned to SELLER, transportation charges prepaid by the Buyer,

(3) The product is received by SELLER not later than ten days after the last day of the two-year

period of this Warranty, and

(4) SELLER’ examination of the Product discloses to SELLER’S reasonable satisfaction that

such defects or failures as may exist have not been caused by misuse, neglect, improper

installation, repair, alteration, accident or shipping.

The Buyer will prepay freight to and from SELLER on products serviced here under at SELLER’ plant; but

SELLER may, at its option, elect to perform any repairs here under at the Buyer’s place of business.

The foregoing constitutes SELLER’S entire Warranty expressed, implied and/or statutory, except as to

title, and states the full extent of SELLER’S liability to the Buyer or to any other party for any breach of

such Warranty and for damages, whether direct, special, incidental or consequential; and, other than as

expressly provided in this document. No Warranties, expressed or implied, including any Warranty or

merchant ability or of fitness for a particular purpose, are made. No employee, representative or agent of

SELLER has any authority, expressed or implied, to alter or to supplement the terms of this Warranty.

Warranty Service

The Limited Warranty covers parts and labor to the original purchaser for two year. Damage

caused by misuse or shipping is excluded from the warranty. Before returning units or material,

contact the factory for a Returned Material Authorization (RMA) number. Ship all material

prepaid. Defective material should be addressed to:

PTEK

Customer Service Manager

1814 Schooldale Drive

San Jose, CA. 95124

(408) 448-3342

Contents

Safety Notice .................................................................................................................4

Rear

FCC, Accessory Connections & efficiency V O/P Pwr.................................................12

Parts list Chassis...........................................................................................................22

Parts list Synth Board ..................................................................................................25

Parts list LED Board ....................................................................................................25

Specifications ................................................................................................................5

Front & Panel Layout .............................................................................................6

Installation .....................................................................................................................8

Schematic Synthesizer ...........................................................................................12-13

PROVISIONAL......................11/25/96REV A.....................................1/16/97REV B.....................................10/7/97REV C.....................................4/13/99REV D.....................................5/24/99REV E....................................12/14/99REV G........................................7/7/03

Rev record

Safety

BEFORE APPLYING POWER

GROUND THE EXCITOR.

Fuses

.

DO NOT OPERATE IN AN EXPLOSIVE ATMOSPHERE

DO NOT REMOVE THE EXCITOR COVER

Output connector

Verify that the line voltage is 115V

To minimize shock hazard, the excitor chassis must be connected to an electrical ground. the excitor must beconnected to the ac power mains through a three-conductor power cable, with the third wire firmly connected to anelectrical ground (safety ground) at the power outlet. Any interruption of the protective (grounding) conductor ordisconnection of the protective earth terminal will cause a potential shock hazard that could result in personal injury.If the excitor is to be energized by any other source be certain the that chassis is connected to a separate safetyground.

Only fuses with the same required current, voltage rating, and specified type (normal blow, time delay, etc.) should beused. Do not use repaired fuses or short-circuited fuseholders. To do so could cause a shock or fire hazard

Do not operate the power amplifier in the presence of flammable gases or fumes.

Operating personnel must not remove the exciter cover. Component replacement and internal adjustments must bemade only by qualified service personnel.

The type N output connector carries dangerously high RF voltages which present a shock and burn hazard.operate this excitor with out the out put connector properly terminated in either an adequately rated load or antenna.

NEVER

Specifications

MONAURAL

Audio Input Impedance:

Audio Input Level:

Audio Frequency Response:

Total Harmonic Distortion:

FM S/N Ratio (FM Noise):

Asynchronous AM S/N Ratio (AM Noise):

Synchronous AM SIN Ratio (Incidental AM Noise):

600 ohms, balanced

+10 dBm (6.93 volts peak-to-peak) at 600 ohms for75 kHz deviation

+/-0.5 dB; flat or 75 microsecond pre-emphasis, 20Hz to 15kHz (other time const. available)

0.15% max.; 20 Hz to 15 kHz

70 dB min. below 75 kHz deviation at 400 Hz,measured within a 20 Hz to 15 kHz bandwidth with75 microsecond de-emphasis

60 dB RMS. below carrier; reference: 100% AMmodulation, at 400 Hz with 75 microsecond de-emphasis, no FM modulation

57 dB below carrier; reference: 100% AMmodulation, full power at 400 Hz with 75uS de-emphasis, FM +/- 75 kHz, 400Hz

ENVIRONMENT

Altitude: Ambient Temperature0-10,000 ft -10 to +50 oC

WIDEBAND

Inputs:

Input Level:

Wideband Amplitude Response:

Composite Unbalanced 10kOhmsSCA 1 Unbalanced 10k Ohms

3.5 V RMS. (10 Volts peak-to-peak) for 75 kHz deviation

+/-0.5 dB, 20 Hz to 100 kHz

GENERAL

Frequency Range:

Frequency Control:

Frequency Stability:

Output Impedance:

Output Connector:

VSWR:

Modulation Type:

Modulation Capability:

Multi-Meter Indication:

Harmonic Attenuation:

87.7 to 108 MHz, in 200 kHz steps (other stepsize to order)

Phase locked loop frequency synthesis from highstability master oscillator

+/- 1.2 kHz

50 ohms

Type -"N" female

1.5:1 for full power, derate to 0 at inf.

Direct carrier frequency modulation

Internally limited to 100 kHz deviation

Deviation, Forward Power, Reverse Power, FinalI & V

-70 dB, min.

FM25E

Rated Power Output:

Power Consumption:2 TO 30W

100W

FM50E

Rated Power Output:


200W

FM150E

Rated Power Output:


500W

1

45

Rear panel layout

8 7 6

5

1 2

3 4

Front panel layout

. DEVIATION

2 3

8

AC IN

SCA

FUSE

RF OUTPUT

FINAL CURRENT

FINAL VOLTAGEFORWARD POWER

REVERSE POWER

ADJPOWER

OFF

OPERATE

REMOTE OFF

FAULT

DRIVE LOW

FM Series

PTEKFM25E

DEVIATION

3025201510

5

OUTPUT POWER W (REV X0.1)

4.040

3.030

2.020

1.0100

0 AMPS

PTEK

VOLTS

DEVIATION kHz

100

755025

ON

REMOTE

PWR PWR

VOLTAGE

FWD REV

OFF

CURRENTFINAL

MONO IN600 OHMS

RAISE

LOWER

GAIN

GAIN

GAIN

COMPOSITE

10MHz 1MHz 100kHz

FREQUENCY

Key Element Description

1 AC IN & FUSE 110 VAC input and Fuse 10A

2 COMPOSITE Unbalanced wide band composite input

3 SCA Unbalanced wide band input

4 RF OUT TYPE N RF Output

5 FREQUENCY SELECTION Set switches for frequency selection (only takes effect when unit is switched

from off to on)

6 Accessory connector Connections for; Remote off and DC indications of Forward Power, Reverse

Power, Final Voltage, Final Current and Deviation.

8 SERIAL NUMBER Serial number for reference purposes

Key Element Description

1 METER Indicates Forward Power, Reverse Power, Final Voltage, Final Current and

Deviation

2 OPERATE Switch and

Indicator

This switch sets the FM Broadcast Amplifier to the Operate Mode; 110 VAC is

applied to the line transformers and this amber indicator is lit.

3 REMOTE OFF Indicator This red LED indicator is lit when the FM Broadcast Amplifier remote off

terminals (rear panel) are open circuit.

3 DRIVE LOW Indicator This red LED indicator is lit when the FM Broadcast Amplifier can not make

the power requested, because for example low drive power.

5 FAULT Indicator This red LED indicator is lit when the FM Broadcast Amplifier is in a fault

condition. This can be for one or combination of the following:-

Over drive, High supply Voltage, High load VSWR, Over temperature.

6 Meter Select Switch This switch selects one of the following to be presented on the meter (1):-

Forward Power, Reverse Power, Final Voltage, Final Current and Deviation.

7 ADJ POWER control This control adjust the output power from rated full power to less than 50%.

8 Ventilation Filter This provides for filtering the environmental air as it is drawn into the cabinet

by the internal fan (not used on FM10E).

Refer to the Table below for the following description. The installer should assure the ac line voltage is turned OFFbefore performing this procedure. The electrical connections are installed at the Exciter rear panel.

Installation-Electrical

Step Procedure

1 Connect the load RF line to RF OUT connector.

3 Connect the ac line power to the ac line in connector.

4 Optional. Connect the remote site metering, to the rear terminal block.

5 Connect either the composite input to the output from a stereo encoder or the balanced mono input to a

program source

RG8 TO ANTENNA/PA

PART OF USER SUPPLIED REMOTE CONTROL

BALANCED MONO IN

OR (NOT BOTH)

FROM STEREO ENCODER OR STL

AC IN

SCA

FUSE

RF OUTPUT

ON

REMOTE

PWR PWR

VOLTAGE

FWD REV

OFF

CURRENTFINAL

MONO IN600 OHMS

RAISE

LOWER

GAIN

GAIN

GAIN

COMPOSITE

10MHz 1MHz 100kHz

FREQUENCY

Refer to the Table below for the following procedure.

Step Action Verification

1 Switch the RF out to a dummy load.

2 Turn on the ac line power to excitor. DRIVE LOW indicator is out. FAULT indicator is on

initially then out after 30 seconds. REMOTE OFF

indicator is out.

3 Select Meter to read FORWARD POWER.

4 Adjust the POWER CONTROL to the rated

power.

5 Select Meter to read FINAL VOLTAGE. The Meter reads 15~50V. Note the exact value.

6 Select Meter to read FINAL CURRENT. The The Meter reads 1~8A. Note the exact value.

7 Calculate the dc power input to the PA from the

values of step 4 and 5.

P=VI and note the exact value.

8 Select the Meter to read REVERSE POWER. Check that there is no appreciable reading of reverse

power

9 Calculate the PA efficiency. Step 6 value divided by the value in step 7 or about 50

percent.

10 Adjust the ADJ POWER Switch to raise or

lower the output to the required output power.

Turn-On Checkout

Frequency Selection

10s MHz Switch

“0” is 10 (100MHz)

PLEASE NOTE, FREQUENCY CHANGESSHOULD BE MADE WITH THE UNIT TURNED

OFF

100kHz Switch1MHz Switch

Example Shown 104.5MHz

FCC Compliance statement

THIS DEVICE HAS BEEN VERIFIED TO COMPLY WITH PART 73 OF THE FCC RULES.

Pos Function

1 Remote on; Momentary ground to turn the unit on.

2 Remote off; Momentary ground to turn the unit off.

3 Forward Power DC indication 2.4V=12W

4 Reverse Power DC indication 2.4V=1.2W

5 Final Voltage DC indication V=Vsupply/10

6 Final Current 1A=0.1V

7 Raise Ground to Raise Output Power

8 Lower Ground to Lower Output Power

9 600 ohms balanced mono input

10 600 ohms balanced mono input

FM25E FM50E FM150E

Power

Output

(Watts)

Efficiency

(%)

Power

Output

(Watts)

Efficiency

(%)

Power

Output

(Watts)

Efficiency

(%)

25.0 52% 50.0 48% 150.0 57%

22.5 49% 40.0 42% 120.0 51%

20.0 47% 32.0 38% 96.0 45%

17.5 46% 25.6 33% 76.8 40%

15.0 44% 20.5 30% 61.4 35%

12.5 42% 16.4 26% 49.2 32%

10.0 33% 13.1 23% 39.3 28%

Efficiency V Output Power

Accessory connector

EXCITER SCHEMATIC

600 OHMS BALANCED

MONO INPUT

MONO INPUT

SCA INPUT

STEREO INPUT

CW

W

CC

W

500

R98

P1

P2

S1

S2

S3

MOUSER

T22

9

1

3

2

P2:1

P4

3P2:2

P3

P2:4

P2:3

DOWN

UP

3

2DOWN

UP

P1:5

P1:6

C51

12p10pC52

C56

12p

C624.7u

1P8:1

2P8:2

3P8:3

+5V

2N3904

Q8

2N3906

Q10

R42

100K

R43

100K

R484.7K

R544.7K

R60100

R642.2K

R66100K

R67100K

R68100K

R7410K

R751M

2

3

4

1

5

6

7

8CS

CLK

DI

DO Vss

ORG

NC

Vcc

U693LC56

2

3

4

5

6

7

1

8

9 10

11

12

13

14

15

16

17

18RA2

RA3

RTCC

MCLR

Vss

RB0

RB1

RB2

RB3 RB4

RB5

RB6

RB7

Vdd

OSC2

RA1

OSC1

RA0

U8PIC16C56

4MHz

X1

+5V

2 7

3 6

4 5

1 8

S3:1

2 7

3 6

4 5

2 7

3 6

4 5

1 8

S7:1

1 8

S2:1

D11

D12

D13

D14

D15

D16

D17

D22

D23

D24

D25

R69100K

D10

ALL THESE DIODES1N4148

C55

0.01u

C5

94

.7u

NO

NP

OL

C644.7uD18

1N4148

+5V

+12V

BRF96

Q9

R49

10K

R51

4.7kR53

100K

R611M

R65

1M

R72100K

R791K

2-

3+

11

4

1

LM324J

U7:A

R5710K

C71

100p

R104

100K

R103

100K

+5V

6-

5+

7

LM324J

U7:B

C53

10p

2

3

4

5

6

7

1

8 9

10

11

12

13

14

15

16OSCin

OSCout

REFout

fin

Din

ENB

CLK

Dout

fV

fR

LD

VSS

PDout

VDD

piV

piR

U9MC145170

R44270

R4522

R4622

9-

10+

8

LM324JU7:C

C69

0.01u

R811K

R86

10K

CW

W

CC

W

10K

R88R92

10K

CW

W

CC

W

10K

R93

R95

7.5K

R99

560

C67

0.1u

C63

4.7u

6-

5+

7

LM324J

U11:B

2-

3+

11

4

1

LM324J

U11:A

-12V

-12V

+12V

R90

47K

R10210K

R96

4.2K

R4010K

R31

4.7KC43

47u

R32100K

C4

9

0.1

u

R15

22C2047u C21

4.7u

R16

560

R17

10K

C230.01u

D3

MMBV2109LT1

D5MMBV2109LT1

L5

4T0.156 22G

R2810K

C3210p

D8

MMBV2109LT1

R33100K

VCO

OFF

REMOTE OFF LED

R71k

+5V

P3:1

PSU CAP

D11N4148

P2:9ON

P2:10

C5

C6

C2

C3

C4

C1

RL

A1

D21N4148

RLA/2

15V

1VI

2G

3VO

7812

U3

C75

0.1u

PSU CAP

+12V

R8

100

R1110K

+12V

C18

0.1u

1VI

2G

3VO

LM7805U2

1VI

2G

3VO

78L08

U1+12V

8V+5V

C7

47u ELNO

C5

0.01u

C4

0.01u

C3

0.01u

C20.01u

5

6

7

8

4

3

2

1

-Vout

NC

NC

+VinNC

CAP+

GRN

CAP-

U47660

C84.7u

C12

220u

C38

0.01u

C39

68p

C40

0.01u

C41

18p

C50

4.7u

L12

2T0.125 22G

L141uH

+12V

+5V

+12V

BRF96

Q6

BRF96

Q7

R21

10

R2347R24

100R25

100R26100

R30

10K

R34

22

13-

12+

14

LM324J

U7:D

-12V SWITCHING REGULATOR

R1010K

2N3904Q2

R1822

C22

47u

C17

0.01u

2N3904

Q1

C420.01u

C14

0.01u

C2410p

R35

1K

R36

100

P1

P2

S1

S2

S3

{Value}

T1

R22

22

R3822

C16

47u

G

SD

U310

Q3

C3610p

+12V

C2962p

CW

W

CC

W

10KR9

13-

12+

14

LM324J

U5:D

R411K

R39100K

R37

470

R20470

R19220

MRF171

Q5

MRF237

Q4

5V

+12V

L13

2T0.175_22g

L10

5T0.235_18g

L9

5T0.235_18g

L8

5T0.2_18g

L7

4T0.175_18g

L6

1.5T0.175_18g

L4

4T0.235 18G

L3

4T

0.1

65

22

G

D7

1N4148

C48

0.01u

C47

0.01u

C45

0.01u

C35

0.01

C3433p

C33100p C28

47p

C27

43p

C26620p

C25

120p

C15

0.01u

C131000p

DETECTOR DIODE BIAS& TEMP. COMPESATION

+5V

R125.6K

R1351K

R3

82K

-12

V

C74

47u

9-

10+

8

LM324J

U10:C

R1

0.1

C9

0.01

5

6

7

8

4

3

2

1

-Vout

NC

NC

+VinNC

CAP+

GRN

CAP-

U127660

C73

220u

C724.7u

C1

4.7u

R610K

R5100K

R2

3.9k

FINAL CURRENT REARP2:5

R106

10K

P2:6

FINAL VOLTAGE REARR105

10k

R4

100

FINAL CURRENT

FINAL VOLTAGE

P1:8

P1:9

REVPWR

RF OUTL11

5T0.2_18g

C46

0.01u

C44

0.01u

C37

47p

C3124p

C3047p

R27

120

R2910K

R14120

C10

0.01u

C1947p

C11

0.01u

R77100

D4

1N4148

D61N4148

R731K

6-

5+

7

LM324J

U10:B

13-

12+

14

LM324J

U11:D

9-

10+

8

LM324J

U11:C

C660.01u

C70

4.7u

D191N4148

D20

1N4148

CW

W

CC

W

10K

R78

CW

W

CC

W

10KR80

R82

10

R83

470

R84

10K

R85

10K

R87

10K

R97

100K R100

1K

R101

100K

R94

10K

C68

4.7u

D2

1

1N

41

48

-12V

R9110K

CW

W

CC

W

10KR58

REVPWR

C76

100p

+12V

-12V

-12V

AGC

C57

0.1u

C58

0.01u

C60

100p

D9

1N4148

CW

W

CC

W

10KR47 R50

10K

R55

8.2K

R56

100K

R7110K

2-

3+

11

4

1

LM324J

U5:A

C77

100p13

-

12+

14

LM324JU10:D

R10810K

R107

3.9K

+12V

R59

1k

R521k

P2:7

9-

10+

8

LM324J

U5:C

6-

5+

7

LM324J

U5:B

P1:4

P1:3

P1:2

AGC IN RANGE DETECTER

C54

100p

C61100p

C65100p

DRIVE LOW

FAULT

REV PWR REAR

REV PWR METER

R62

470 R6310K R70

10K

R76

10

2-

3+

11

4

1

LM324J

U10:A

-12V

P2:8

6

P1:7

P1:1

METERING

DEVIATIONMETER

FWD PWR METER

FWD PWR REAR

CW

W

CC

W

200R89

WIRING DIAGRAM

P2:9 FINAL VOLTAGE

P2:8 FINAL CURRENT

P2:7 BALANCED AUDIO

P2:6 BALANCED AUDIO

P2:5 REMOTE OFF

P2:4 REMOTE ON

P2:3 GND

P2:2 REV PWR

P2:1 FWD PWR

P2:11 SCA

P2:10 COMPOSITE

P2

P1

P2:10 COMPOSITE

P2:11 SCA

P2:9 FINAL VOLTAGE

P2:8 FINAL CURRENT

P2:7 BALANCED AUDIO

P2:6 BALANCED AUDIO

P2:5 REMOTE OFF

P2:4 REMOTE ON

P2:3 GND

P2:2 REV PWR

P2:1 FWD PWR

WHITE 16G BLACK 16GLN

P1:10 REMOTE OFF LED

P1:9 FINAL VOLTAGE

P1:8 FINAL CURRENT

P1:7 DEVIATION

P1:6 CONTROL VOLTAGE

P1:5 5V

P1:4 DRIVE LOW

P1:3 FAULT

P1:2 REV PWR

P1:1 FWD PWR

+V OUT

-V OUT

PSU

24V for 25E

AC IN

AC IN

8

1

2

3

4

5

6

7

9

10

TB5

SCAJ2

GND

COMPOSITEJ1

GND

J3

10A

F2

RF OUTJ2

GND

150W POWER AMPLIFIER(USED ON FM150E ONLY)

48V

48V OUT

PSU48V for 150E

ONLY

AC IN AC IN

WIRING DIAGRAM

P1:7 DEVIATION

P1:6 CONTROL VOLTAGE

P1:5 5V

P1:4 DRIVE LOW

P1:3 FAULT

P1:2 REV PWR

P1:1 FWD PWR

P1:8 FINAL CURRENT

VOLTS

GREEN 22G

LED PCB

FWD PWR

REV PWR

P1:10 REMOTE OFF LED

P1:9 FINAL VOLTAGE

AMPS

DEV

W 10K

R10

GND

FAN1

24VDC

14

3 2

S2

M1

10mA

GND

GND

2

3

1

SW1

Parts list Chassis

Parts list Exciter Board

Parts list Synth Board

Parts list LED Board

PTEK1814 Schooldale Drive

San Jose CA 95124408 448 3342 FAX 408 448 5951

Printed in USA

FM SERIES - 3-mtr.info · Key Element Description 1 AC IN & FUSE 110 VAC input and Fuse 10A 2...

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Transcript of FM SERIES - 3-mtr.info · Key Element Description 1 AC IN & FUSE 110 VAC input and Fuse 10A 2...