Service Guide Jotron B120 Revision A

8/16/2019 Service Guide Jotron B120 Revision A

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Jotron B120 Service Guide

Revision A 2012-08-06 Page 2(81)

Table of Contents

2. GENERAL ........................................................................................................................ 5

2.1

Using this manual ............................................................................................................... 5

2.2 Important safety information ................................................................................................ 5 2.2.1 Warning - Risk of Electr ic Shock ........................................................................................ 5 2.2.2 Warning- Risk for moving platform inside radome ............................................................... 5 2.2.3 Caution - RF Radiation H azard .......................................................................................... 5 2.2.4 Who should install and service the system? .......................................................................... 5

3. ALARMS & STATUSES .................................................................................................... 6

4. FAULTFINDING ............................................................................................................. 12

4.1 Functional split ............................................................................................................... 12 4.2 Error states .................................................................................................................... 12

4.3

IP ................................................................................................................................... 18

4.4 GPS and Gyro Input ....................................................................................................... 18 4.4.1 Check of NMEA input string ........................................................................................... 19 4.4.2

Configure NMEA baud rate ............................................................................................ 20

4.5 Exchange of ASU........................................................................................................... 20 4.5.1

Procedure for Physical replacement of ASU .................................................................. 20

4.5.2 Verifying correct Eeprom values of new ASU ................................................................. 23 4.5.3

Calibrating rate sensors and tilt sensor after exchange of ASU ...................................... 23

4.5.4 Calibrating polarisation values after exchange of ASU ................................................... 24 4.6 Sensor Unit .................................................................................................................... 26 4.6.1 Exchange of Sensor Unit ............................................................................................... 26 4.6.2 Configuration of new SU ................................................................................................ 27

4.6.3

Calibrating rate sensors and tilt sensor after exchange of Sensor Unit ........................... 27 4.7 Transceiver .................................................................................................................... 28

4.7.1 Removing Transceiver ................................................................................................... 28 4.7.2 Inserting new Transceiver .............................................................................................. 29 4.7.3

Calibrating polarisation values after exchange of Transciever ........................................ 32

4.7.4 Polarisation Motor & Potentiometer ................................................................................ 33 4.8

Polarization alarm troubleshooting ................................................................................. 36

4.8.1 Checking potentiometer readings ................................................................................... 36 4.8.2 Checking step motor current .......................................................................................... 39 4.8.3 High elevation polarization error ..................................................................................... 39 4.8.4

TEST REGISTERS ........................................................................................................ 40

4.8.5 CHANGING THRESHOLD FOR POLARIZATION ALARM ............................................ 40

4.9

Belt Tension ................................................................................................................... 41

4.10 Exchange of Elevation Drive Belt ................................................................................... 42 4.10.1 Procedure ...................................................................................................................... 42 4.11 Slip Ring / Rotary Joint exchange .................................................................................. 50 4.11.1 Removing slip ring / rotary joint unit(s) ........................................................................... 50 4.11.2

Installing new slip ring / rotary joint unit(s) ...................................................................... 53

4.12 Cable modems ............................................................................................................... 54 4.12.1 Fault finding ................................................................................................................... 56 4.12.2 Cable Modem Exchange Procedure............................................................................... 57 4.13

Mechanicle check in ADE .............................................................................................. 66

5.

CABLING ....................................................................................................................... 66

5.1

ADE BDE RF cables ...................................................................................................... 66

5.2 NMEA ............................................................................................................................ 67


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6. START UP SEQUENCE................................................................................................... 68

7.

ADVANCED NETWORK CONFIGURATION ................................................................. 70

7.1 The Webmin tool /Interfaces .......................................................................................... 70 7.2 Access to webmin .......................................................................................................... 70 7.3

Customizing External interface Eth 1 ............................................................................. 71

7.4 Setting Gateway............................................................................................................. 73 7.5

Adding VLAN ................................................................................................................. 74

8. SNMP FAULTFINDING.................................................................................................. 76

8.1 Problem getting SNMP response, No SNMP SW on ACU ............................................. 76 8.2 Check connectivity between modem and BDE ............................................................... 76 8.3 Check settings ............................................................................................................... 76

9. DATABASE RECOVERY ............................................................................................... 76

9.1 Corrupt Database........................................................................................................... 76 9.1.1 Procedure installing new database ................................................................................ 76

10.

FINAL TEST BEFORE LEAVING VESSEL AFTER SERVICE ....................................... 77

10.1

Power off – on test ......................................................................................................... 77

11. WIRING DIAGRAM........................................................................................................ 78

12. APPENDIX – ABBREVIATIONS & COMPONENTS ....................................................... 81

Rev Date Pagesaffected

Changes

PA18 31.01.2012 SW 3.X , Vlan,SNMP,NMEA

PA19 13.04.2012 New CMU type, webmin

PA20 18.06.2012 Database Recovery

WEBMIN – Setting Default GatewayPA21 25.05.2012 Minor change to exchange of transceiver – how belt to

ppotentiometer- is put on.

New Paragraph Polarisation – checkpoints and troubleshooting ( potentiometer and step motor readings)

- New procedure or Exchanging Elevation Drive Belt.

PA26 30.07.2012 Added procedure for slip ring / rotary joint exchange.

A 06.08.2012 All - Details in CM configuration- Corrected some screenshots for CM configuration

Language check


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Jotron B120Stabilized VSAT Ku-antenna

Service Guide

CAUTION:

This stabilized antenna system is designed with a transmitter (Transceiver or BUC). A transmitter involves potential hazards, including exposure to RF radiation, associated with the improper use of the transmitter.The transmitter could operate independently of the stabilized antenna system. Prior to work on thestabilized antenna system, the power to the transmitter must be switched off. When the transmitter is inoperation, no one should be allowed anywhere within the radiated beam being emitted from the antenna.

The ultimate responsibility for safety rests with the facility operator and the individuals who work on thesystem.

Potentially lethal voltages are present within the ADE (Above Deck Equipment) and the BDE (Below DeckEquipment) .To avoid electric shock, do not open the chassis enclosures of the BDE unless you are a Jotroncertified technician. Access inside the radome is only allowed for a Jotron certified technician.

Inside the radome of the ADE (Above Deck Equipment) a moving pedestal is present. While opening thehatch, entering the radome or doing service on the pedestal please be observant so you are not hit by themoving pedestal. The hatch shall always be securely locked unless a Jotron certified technician is doingservice inside the radome.


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5o 5o

Radiation Hazard

16 m

(52 feet)

16 m

(52 feet)

2. GENERAL

2.1 Using this manual

These instructions explain how to service the Jotron B120 VSAT stabil ised antenna. Instructions on how to use the system are provided in the User’s Guide and I nstall ation Guidedescri bes how to install the Jotron B120.

2.2 Important safety information

For your own safety, and for the safety of your passengers and/or crew, be sure to read thefollowing important notices.

2.2.1 Warning - Risk of Electr ic Shock

Potentiall y lethal voltages are present with in the ADE (Above Deck Equipment) and the BDE

(Below Deck Equipment) .To avoid electri c shock, do not open the chassis enclosures of theBDE unless you are a Jotron certi f ied technician. Access inside the radome is only allowed fora Jotron certi f ied technician.

2.2.2 Warning- Risk f or moving platform inside radome

I nside the radome of the ADE (Above Deck Equipment) a moving pedestal is present. Whi leopeni ng the hatch, enteri ng the radome or doing service on the pedestal please be observant soyou are not hit by the moving pedestal. The hatch shal l always be securely locked un less aJotron certi f ied techni cian is doing service inside the radome.

2.2.3

Caution - RF Radiation HazardThe antenna transmits radio f requency (RF ) energy that is potenti all yharmful . Whenever the system is powered on, make sur e everyonestays more than 20 feet (6 m) away from the antenna wi th in i ts 5°- 90°elevation range. No hazard exi sts directly below the antenna’smounting plane. If a person is standing outside the antenna’s maintransmission Beam, min imum safe distance is 1 foot (0.3 m).However, since person may not know which direction the antenna ispointing, i t is always best to observe the ful l 20 feet (6 m) min imum safedistance. Passenger safe distance 16 meter

Using the web in terface, you can set up RF radiation hazard zones to inh ibit transmissionswithin areas frequented by your passengers and/or crew. See section 4.3 in the User Guide forinstructions.

2.2.4 Who should install and service the system?

To ensure a safe, correct and effective install ation, only a Jotron certi f ied technician shouldinstall and service the Jotron B120. Jotron certi f ied technicians have the tools and electronicsexperti se necessary to install the system. For techn ical support contact your service provider.

Figure 1


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3. ALARMS & STATUSES

Alarm Cause / Triggered by Action Units to inspect

Alarms No contact with pedestal Triggered if BDE do not getresponse from control softwarein the ADE

BDE

- Ping BCMU, default address 192.168.0.3

- Ping ACMU, default address 192.168.0.14.

- Ping ASU(Bf) default address 192.168.0.15

- If ping tests OK. Cable Modems and ADE-BDE RX RF Cables are OK

- If ping to ACMU is not OK

- Check that Rx and Tx cables betweenADE and BDE are correctly connected,and not “cross connected”

- Check if ADE and BDE CM are paired.

- If only ASU do not respond to ping checkEthernet cable between ACMU and ASU

- Try restart of ADE,

- Try restart of BDE

ADE-BDE Rx cableADE Cable ModemASU – CM Eth.cableRF Rx cablesRotary Joint

TapperASUBDE Rx cablesTapperCable modemSwitchEthernet cablesAccess Controller

Alarms No contact with uC Caused either by

- Failure in communication between BDE and ADE(ASU)

- ASU have entered an errorstate where Micro Controllerin ASU do not respond to

requests

BDE

- View alarm log entries for additionalInformation.

- Ping BCMU, default address 192.168.0.3

- Ping ACMU, default address 192.168.0.14

- Ping ASU(Bf) default address 192.168.0.15

- Try restart ADE

ADE ASU

Alarms No heading BDE

- Check that NMEA cable connected

- Verify valid NMEA sentence available

- Check NMEA port speed

- Check BDE internal NMEA Cable to ACC

BDE NMEA Cable NMEA Sentence NMEA Speed


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Alarms No GPS BDE

- Check JRAS Position time updatesADE

- Check GPS cable connection to ASU

ADE GPSGPS to ADE CableASU

Alarms No target For the selected target number(Satellite) there is noconfiguration defined

BDE

- Check JRAS selected satellite parameters

Alarms No RF band defines For the target frequency RF

Band setup provides noconfiguration for band

BDE

- Check JRAS selected satellite parameters

- Check JRAS Transceiver and RF BandConfiguration

Alarms No TRB contact No response from the TRBwhen querying its version

BDE

- Check alarm log for other entries.

- Power cycle ADE

- Re-load System SW ( ADE and BDE)

ADE ASU(TRB)BDE SW loadingTRBPower cycle ADE

Alarms No blockage definition forheading

The blockage table must define blockage or clear for all 360degrees in azimuth

BDE

- JRAS, configure blocking zone or at least a0-360 degree free zone

Alarms Process failure Internal watchdog has failed toget an answer from a software

process. If the process in on theADE this may be due to loss ofthe link. Otherwise a softwareerror is indicated

BDE

- Check alarms log for additional alarms

- Check process status in JRAS “System ->Status” menu to determine which processthat has failed

Alarms Regulator Alert uC Status indicates an alertcondition. The alarm logcontains details of the type oferror

BDE

- Check Alarm log

- For polarization alert, See section for polarization and potentiometer below.

- View JRAS “System -> Regulation Status -> view Uc Trace”

- Polarization

- Friction all axis

- Motors

- SU


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Alarms Database Error - Umpire process cannotread rx info

An error reading the targetconfiguration caused bymisconfiguration or a softwareerror

BDE

- Check Satellite Definition in JRAS.

Alarms Application Error - RF setupstalled

Setting up the head(Transceiver)involves setting DiSeQconfiguration, and Polarization.If any of these tasks does not

complete within 90 seconds thisalarm is raised

BDE

- Check Alarm logs for entriesADE

- Power off, check transceiver moves freely in

operational range- Check belts, motors and potentiometer

- May require to configure polarization with“test5” re-calibrate polarization

ADE TransceiverPol. potentiometerPol Motor

Belts for polarizationASU(motor drive)

Alarms TRB Config stalled Timeout trying to configure theTRB

BDE

- Check alarm log for other entries

- Try restart BDE & ADE

- Re-load System SW ( Both ADE and BDE)

ADE ASU (TRB)

Alarms TRB init failed TRB indicates an error at startup BDE


- Try restart BDE & ADE

- Re-load System SW ( Both ADE and BDE)

ADE ASU(TRB)

Alarms TRB Powerline The LNB power is set by theTRB, if subsequently readingthe voltage back shows an errorthisalarm is raised

BDE

- Check sensor reading LNB voltage, JRAS

menu “System -> Sensors” (Mon_ADC_CH_LNB)

- Rx chain between ASU and Transceiver.( Rx cable ASU - Splitter, splitter, Rx cablesplitter-Transceiver)

- Disconnect Transceiver Rx, if Power oncable is OK at transceiver – then eitherTransceiver Rx is defect pulling too muchcurrent or TRB board power supply defect.

ADE ASU(TRB)Rx cablesSplitterTransceiver


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Alarms Polarization Slip The polarization is set, and thenread back. If the value read from

potentiometer fail to convergewith the calibrated value thisalarm is raised

BDE

- Check Alarm logs for entriesADE

- Power off, check transceiver moves freely inoperational range

- Check polarization drive belts, motors and potentiometer

- May require to configure polarization with“test5”

ADE TransceiverPol. potentiometerPol MotorBelts for polarizationASU(motor drive)

Alarms Relay Control Fail Attempts to access the relayswitch gear at the front panelfailed

BDE


- Check cables from ACC to FPIU

BDE ACCFPIU12VDC Powersupply

Alarms uC Monitor uC indicates an error detected byits own monitoring either acurrent error with the BUC or asudden loss of pointingaccuracy. The alarm log givesdetails

BDE

- Check alarm log

- Check track log

ADE TransceiverASU & TRBSU

Alarms Modem contact lost No contact with the controllingVSAT modem

BDE

- Check IP configuration

- Check VSAT Modem parameter definition inJRAS

- Check SNMP Settings in VSAT Modem(STM)

- Check Antenna settings in option file(iDirect)

- Check IP routing, switch, router cables

BDE IP configuration

ModemconfigurationEthernet CablesExternal Netw Eth. CablesSwitches, RoutersVSAT Modem Check configuration


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Alarms Front Panel Disconnected Front panel is not present orattached

BDE

- Check Cabling ACC – FPIU

- Check Power cable 12VDC to FPIU

BDE FPIUACC

Alarms Regulation Stopped After repeated attempts atstartup the Micro Controller inASU stops attempting toregulate.

BDE

- Check Alarm log

ADE ASUSUMotors

Friction


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Status - Values are shown for the duration of an activity they represent a system state

Status STARTUP Shown prior to BDE having contact with the ADE and uC

Status CHECK-TRB Reading TRB status

Status READ-TRB Read TRB Version

Status CHECK-REG-LOOP Read/Check uC software version

Status STABILIZE Await the uC start of regulation

Status READ-MODE Read from the database the operational status of the antenna from the last time it ran

Status READ-POSITION Await a valid position(GPS) and heading fix (NMEA input)Status READ-TARGET Read the target satellite details from the database

Status CONFIG-HEAD Set polarization and band at the LNB

Status CONFIG-TRB Set the target frequency and mode of operation for the TRB

Status CONFIG-SENSORS Set the configured tracking mode (sensor box mode)

Status POINT Pointing to the nominal look angle waiting for the operation to completeStatus STATE_ENABLE_SYNCHRO

NOUS_READSet the TRB to auto report pointing readings clocked by the conical scan movement

Status SPIN-UP Requested conical scan start(Antenna tracking pattern) waiting for stability in the movement

Status TRACK Normal tracking is running moves are applied based on estimated pointing errorStatus ROTATE During tracking If polarization is adjusted in steps larger than 1 degree, e.g. rewind, TX is disabled during this

operation. ( During tracking the Polarization continuously adjusted in steps less than 1 degree)

Status SEARCH Wide area search is ongoing

Status DISABLED Tracking has been disabledStatus MANUAL-STEER Manual steering with full regulation has been selected

Status LOCK_ENCODER Before reaching the Fixed pointing mode we have requested that the encoder be locked await completion of this

Status SPIN_DOWN Stopping conical scan (Antenna tracking pattern) before entering the next operational stateStatus FIXED Fixed pointing mode selected. Regulation will not use azimuth encoder changes

Status UNLOCK_ENCODER Restoring normal encoder settings

Status READ-SPECTRUM At any time in operation the user may request that the transponder signature (spectrum) be read.This causes entry to this sub state in which the TRB is configured to read the spectrum and theresults reported to the user

Status RESTORE-MODE After reading a spectrum the system must re tune to the target and configure for normal tracking or whatever the previous operational mode was. in this state we complete the TRB configuration to restore normal operation.


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4. FAULTFINDING

NOTE!

Potential ly lethal vol tages are present withi n the ADE (Above Deck Equi pment) and the BDE (Below Deck Equipment) .To avoid electri c shock, donot open the chassis enclosures of the BDE unless you are a Jotron certi fi ed techn ician. Access inside the radome is only al l owed for a Jotroncerti fi ed technician.

I nside the radome of the ADE (Above Deck Equipment) a moving pedestal is present. Whi le opening the hatch, entering the radome or doingservice on th e pedestal please be observant so you are not h it by the moving pedestal. T he hatch shall always be securely locked un less a Jotroncert if ied techni cian i s doing service inside the radome

4.1 Functional split

BDE – ACC ADE - ASU

User interface support with web and command line

SQL database for logs and configuration

Uploads ADE software to the Above Deck on start-up.

AMIP and VSAT modem interfaces

Stabilization, instantaneous corrections to look angle compensate for seamotions

Hosts interfaces for GPS, Tracker receiver board and sensors

Tracking control, corrective movements are applied based on powermeasurements taken as the bore sight is driven through a conical scan

pattern

Applies rules governing transmitter control, requirements dictate 100msresponse in some conditions

4.2 Error states

On arrival it is important to determine what fails and if reported failure is present. It is recommended to make an overview of the present situation by:1. Do not restart system before visually inspecting BDE and ADE2. Connecting to the BDE

a. Via JRAS look through alarm logs, tracking logs and counters3. Enter the ADE and observe.4. First system restarts should be visually observed in the ADE.


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Status Indicates What to Check / to do

ADE starts to initiate butduring initialisation allmotor “loose” torque

Indicates:

- Automatic Calibration of sensors, “test 1” - Ifneeded it will start after sensor Unit has moved toend stop and back to position of 0 degree elevation.

- Failure on motor

- Motor driver failure (ASU)

- Power supply, not giving enough power to drivethe antenna.

- Mechanical obstruction or friction causing systemto shout off power to the motor

Verify free movements with no special torque in all axes. (Antenna powered on so that motor breaks are off, verify free movement beforeantenna starts to initiate.)Observe antenna during initialisation.To check if system is performing calibration of sensors: Check JRAS:If status is = “Calibrating” wait 5-10 minutes for “Test 1” to calibraterate sensors.If status is “Stabilising” enter “System -> regulation status” and open

“View uC Trace” observe if “test 1” has started. If so wait 5 -10 minutesfor “Test 1” to calibrate rate sensors.

ADE starts to initiate butafter detecting homesensor all motor “loose”

torque

Automatic Calibration may be initiated after sensorUnit end-stop calibration and/or after antenna hasdetected the home sensor.

(Automatic calibration is required if antenna isstarted at a temperature which rate sensors are notcalibrated. After calibration the Antenna will restart.)

Check JRAS status:If status is = “Calibrating” wait 5-10 minutes for “Test 1” to calibraterate sensors.

- If status is “Stabilising” enter “System -> regulation status” and open“View uC Trace” observe if “test 1” has started. If so wait 5-10minutes for “Test 1” to calibrate rate sensors.

ADE initiates but antennado not point at satellite

Check active alarms

- Check GPS and Gyro input.(GPS may use up to 10 minutes to get validreading if system has been powered off for a long

period.)

- Az reference not detected ( Hall sensor) will givean alarm, If magnet is in place on AZ cogwheel –

it may be related to defect hall sensor, locatedinside ASU, if faulty it will require ASU to beexchanged.

- Check GPS

- GPS information can be received either from own GPS located inADE or GPS received via NMEA port on BDE.

- In JRAS check c

- Gyro, Check that NMEA cable is connected and that valid headingsentence is present. In JRAS check counter for valid Gyro input

- If valid Gyro sentence is present on cable from Vessel, try to swapinput connection: Tx+ and Tx- on input connectors NMEA In A/+and NMEA IN B/-

Antenna points to wrongAZ position

Faulty setting of AZ home sensor offset value. Verify by manually performing procedure for calibrating azimuth offsetvalues. ( Set Bow and point to satellite to fine tune AZ offset)


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Antenna points to wrongElevation

Adjust Elevation offset.

- The Elevation offset is usually no more +/- 3degree. In JRAS the elevation offset valuesshould be between -300 and +300.

Manually configure Elevation offset by performing calibration routine.In JRAS menu “Configuration -> pointing -> Access AdvancedOptions” – Click on the value of Elevation offset. A pop up window willappear, set value =0. Then find satellite and let the antenna tracksatellite, when signal has peaked up, set EL and AZ offset, “REFSAT”.

Polarisation is wrong Check Alarm logRe-calibrate polarisation

Run procedure for calibrating polarisation. Start Telnet session and viaCLI start test 5, observe result in JRAS menu: “System -> regulationStatus -> View uC Trace”

Polarisation do not turnthe complete range

Mechanical check - Check for physical obstructions limiting operational range, e.g. cables.- Check that belt tension between motor and transceiver is not too tight.

- Loosen rear tightening bolt and Perform procedure for tightening.

- Check that potentiometer range is not limiting the turn by reaching endstop. NOTE! Turn gently by moving potentiometer not to break

potentiometer end stop.

No receive signal onJotron B120 TRB

The TRB is located inside the ASU in the antenna.Failure is most likely in ADE.

- Check LNB voltage “MON_ADC_CH_LNB” and measure it atTransceiver Rx connector.

- Verify presence of 10MHz on Transceiver Rx Connector.

- RF cable(s)and components between transceiver and ASU(TRB)

- TRB (ASU)

- Transceiver

Got Receive carrier/spectrum on TRB but notable to track

- No modem lock – antenna repeatedly re-points andsearches.

- No Spectrum Match (MOSIM)- Drift in AZ due to un-calibrated rate sensors

- Tracking off due to faulty SU, ASU, or friction

- Check Modem integration

- Check that spectrum is stored (MOSIM)

- Enter the ADE and observe if antenna is “drifting” off satellite in AZ.If so Run “TEST1” to calibrate rate sensors.

- Verify that bubble in level on top of SU is in centre, if not run “test 3”

- Check All axis for friction.


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System tracking satellite, No receive lock on VSATModem

- Tracking wrong satellite

- Defect Rx component between ASU(TRB)and VSAT Modem.

- Faulty LO configured in VSAT Modem.

- Faulty Jotron B120 configuration oftransceiver or RF-Band

- Check JRAS satellite spectrum to verify correct satellite.

- Check RF-Band and Transceiver settings in Jotron B120

- Check Rx LO settings in VSAT Modem

- Check Satellite parameters in VSAT Modem

- Check BDE – VSAT modem Rx cable

- Jotron B120 TRB is located in antenna, fault may be in Rx chain between ADE and BDE:

- Use spectrum analyser and measure Rx signal on RF test connectorlocated on front of BDE, please note signal is output from a 10dBcoupler.

- Use coupler or splitter to measure on cable from ADE.

- If no Rx Signal check Rx Chain between ADE and BDE.

- Cables

- Rotary Joint

- Splitters, couplers, filters and amplifiers.

System tracking andModem has Rx lock. Butnot able to log on ( Tx)

- No power on Transmitter

- No 10MHz reference on Transmitter Tx(from VSAT Modem)

- Tx LO defined in VSAT Modem

- GPS Position defined in VSAT Modem (TDMA)

- Tx cabling

- Transceiver supply power is enabled by BDE:

- Observe that “satellite name is” Green” in JRAS.

- Observe sensor reading “A_MON-BUC Current” of min 1.8A

- Measure 24VDC present at Tx Cable ( Test Tx mode)

- Verify that modem is configured to supply 10MHz reference and thatit is present at Tx input to transceiver, ( -10 to 5 dBm )

- Verify correct LO setting in modem.

- If CW sent from VSAT is received at HUB but not logging on check

Initial power setting and that GPS position is correct.- Tx Chain BDE - ADE

- ADE – BDE Cable

- Rotary Joint

- BIAS-T

- Cable: Bias T- transceiver

- Power cable to Bias-T.


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Open AMIP interface between BDE and iDirectnot working

- Jotron B120 not configured for Open Amipand/or wrong IP setting of VSAT modem.

- VSAT – not correct IP setting for Antennacontroller.

- Routing between Jotron B120 and VSATModem.

- Ethernet cables

- Antenna Controller IP correctly configured in Option file

- Port is set to 2002, and port 2002 routing between VSAT andBDE is “open”.

- Jotron B120 is configured to integrate via Open AMIIP(OAMIP) and configured with correct IP for VSAT Modem.

- Telnet to Jotron B120, exit command shell and try to pingVSAT Modem.

- From VSAT Modem try to ping Jotron B120 BDE.

- Try Telnet to BDE(ACC), port 2002. Should get response bysome characters appearing in telnet window.

- JRAS Satellite “0” selected ( Jotron B120 automatically setssatellite = 0 when integration is set to Open AMIP.)

STM SNMP, no responsefrom modem.

- If STM modem is connected on VLAN ensure VLANconfiguration is enabled on ACC

- Verify SNMP enabled on ACC

- Verify STM modem Device manager setting for interface used isopen for remote access

- STM Modem: verify SNMP settings on STM modem, open for“Public” and that IP range include ACC

Database Error - A corrupt DB will clearly be seen in JRAS - See procedure for DB recovery

- Note!! Use correct repair DB version. It is related to SystemSW version installed.


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4.3 IP

4.4 GPS and Gyro Input

Jotron B120 require heading information to locate satellite, supported NMEA-0183 sentences are:$GPHDG$GPHDT$HCHDG$HEHDT$INHDTPort configuration 4800, N, 8, 1 (standard config)

Jotron B120 BDE NMEA input is a RS232 interface 9-pin Male D-SUB connector:

- NMEA 0183 Gyro/GPS input to BDE on pin 2 and pin 5( GND)

- GPS output from BDE to modem on pin 3 and 5 (GND).

IMPORTANT- USE EXTERNAL OPTO- ISOLATOR CABLE:External NMEA Cable is shipped together with BDE, female 9 Pin DSUB to be connected to Jotron B120BDE and 4 wire with end sleeves to NMEA BUS and GPS output. The D-SUB on this external cable has

an integrated optical isolation circuit, which creates a galvanic separation between the BDE and the vesselsequipment. See wiring instructions in the section below.

Jotron B120 has GPS antenna & receiver located in the ADE, External GPS is not required but will giveextra redundancy. If GPS is available at BDE via NMEA 0183 from the vessel, the Jotron B120 will usethis GPS information as primary and GPS located in antenna will be backup. Supported Sentences are:$GPGGA$GPRMC

Jotron B120 output GPS information to modem from the active source of GPS input, (Jotron B120 ADE or NMEA0183 input from the vessel) via pin 3 and 5 on NMEA port,


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Jotron B120 requires GPS position for:

- Acquiring satellite, AZ, EL and Polarization

- While tracking to keep correct polarization.

GPS

The Jotron B120 receives GPS information from its internal GPS antenna located at the rear of the pedestal.On the first power on it can take up to 10 minutes before the GPS gives an output so be patient and verify

the Jotron B120 reading is the same as the vessels GPS position. And that counter “GPS RX” increases.

Gyro Input

Verify that reading in Jotron B120 web interface is the same as vessel. And that counter “Gyro RX”

increases

4.4.1 Check of NMEA input string

If heading is not updated, one can verify presence and format of NMEA heading string by connecting NMEA input directly to your service PC COM port.

Pin 2 on the PC connected to TX on the NMEA stringPin 5 on the PC connected to GND

Start a terminal emulator applicationConfigure the COM interface toTypical Bit rate: 4800Data bits: 8Parity: NoneStop bits: 1Handshake: None

If no strings appear try:

- swapping cables between pin 2 and 5

- Try alternative speed 9600 bps or 19200 bps(Jotron B120 NMEA Port speed is default set to

4800bps. Please see procedure below for changing port speed )


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4.4.2 Configure NMEA baud rate

The speed of the BDE NMEA port can be changed (standard 4800)This change is available in telnet.Syntax as follows: nmeaport

Example of how to change the speed to 9600

Connect your pc to the BDE.

Log in to telnet with credentials CLI , telnet

Enter command: nmeaport /dev/ttyS1 9600

4.5 Exchange of ASU

Work Flow:1. If Possible download Eeprom values2. Physical exchange of ASU3. Restore or set ASU Eeprom values

4. Calibration of Tilt and rate sensors5. Calibration of Polarisation

4.5.1 Procedure for Physical replacement of ASU

The ASU is fastened with 4 screws, 2 on each side of the enclosure, showed in the picture with arrows.

1. Use an 3mm Allan key to remove screws.

2. Each connector on the front of the ASU is fastened with screws, use flat headed screwdriver.


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To unscrew the Power in/out connectors on the back of the ASU you have to lift up the ASU to access thescrews.

3. Use an 11mm wrench to loosen the TRB RF Cable


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4. Use an SMA torque wrench to loosen the GPS cable on the ASU, to loosen it is also possible to use an8mm wrench but always use a SMA torque wrench to fasten the SMA connector.

5. Now you can remove the ASU6. Remove the motor-breaks PCB from old ASU ( 5mm) Wrench

7. Insert a New ASU and follow procedure above in reverse order.Note!

a. When tightening the F connector for the TRB do not tighten to hard, tighten until snug (30lbs /3.4nm of torque.). Do not over tighten this F connector.

b. Use an SMA Torque Wrench when tightening the PGS SMA Connector8. Power on the antenna and observe that the antenna initialize correctly.

(Note that the antenna will probably enter alarm mode after detecting hall sensor due to polarizationnot correctly calibrated)


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4.5.2 Verifying correct Eeprom values of new ASU

Eeprom values in New ASU will need to be set, connect to BDE using telnet and verify that registerscontain correct value:

Test command Should read If not set value Title Description

rep 1 306 1 sep 1 306 1 Type of Regulation Manufacturing default 1,defines the correlation between cross elevationand Azimuth

rep 1 107 -1rep 1 108 -1

-1-1

sep 1 107 -1sep 1 108 -1

Mechanical EL and

XEL Information in

ASU

Default factory settingare “-1” for but registersdefining that mechanicalend-stop values should befound duringinitialization and are not predefined.

4.5.2.1 Example of reading and setting Eeprom values

All values can be read by typingRep x y Where x is the Eeprom number and Y is the register

All values can be set by typingSep x y Where x is the Eeprom number and Y is the register Note! Values are directly set into registers

4.5.3 Calibrating rate sensors and tilt sensor after exchange of ASU

It is strongly recommended that the Vessel is in port. The calibration can also be performed at sea

but then it is important that there is none/minimal sea movements and that the vessel is not turningin Azimuth,1. Enter the radome


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2. Connect to wireless Zone in radome.3. Enter Menu “System -> calibration” 4. Press button “Invalidate”. This will delete all previous calibration data for Tilt and rate sensors

all graphs and table values will be deleted.

5. Start a Telnet session to 192.168.0.2Login with user: cliPassword: telnetType: “test 3” The antenna will enter test mode and all brushless DC motors will be powered off and stabilizationwill be turned off.

6. By hand move the antenna in XEL and EL until the Level on top of the sensor unit is in level7. Again type test 3 – tilt sensor is calibrated – rate sensors will continue to calibrate.8. Wait until brushless DC motors re-powers9. Press Button “Download” under calibration menu in web interface. New calibration data for tilt

and rate sensor will be downloaded from ASU to SQL database in BDE. 10. Power cycle antenna by switching off and on circuit breaker

11. Observe that the antenna initialize correctly.(Note that the antenna will probably enter alarm mode after detecting hall sensor due to polarization not correctly calibrated)

4.5.4 Calibrating polarisation values after exchange of ASU

1. Enter the radome2. Connect to wireless Zone in radome.3. Start a telnet session to BDE, 192.168.0.24. Login with user: cli , password: telnet5. Type in: “test 5” The transceiver:

a. Turns CCW to mechanical end stop

b. Turns CW until mechanical end stop,c. 2-3 degrees out of CW Mechanical end stopd. Moving CW stopping every 20 degree inserting potentiometer references into Eeprom.


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6. When sensor unit starts to move, power cycle antenna by switching off and on circuit breaker7. Observe that the antenna initialize correctly and points towards the satellite.

8. AZ and Elevation offsets for new ASU is not optimized and the antenna may not be able to perform a direct point and track satellite. If Antenna is not able to track satellite try initiating asearch.

9. When antenna is tracking and signal is optimized, set new AZ and EL offset values by:a. Enter menu “Configuration -> Pointing” b. Press button “RefSat”

10. Power cycle BDE and ADE11. Observe ADE initialisation and that it points to satellite12. Verify that it tracks the satellite at same AZ and EL angle as theoretical calculated direction, if not

repeat from step 8.


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4.6 Sensor Unit

Work Flow:1. If Accessible download SU Eeprom values2. Physical exchange of SU3. Restore or set SU Eeprom values4. Calibration of Tilt and rate sensors

Tools

3mm Allen Key

Flat screwdriver

Cutting pliers

Loctite 243 or similar

4.6.1 Exchange of Sensor Unit

1. Disconnect DSUB connector at rear of SU(1)2. Cut Cable tie holding the Sensor Cable located at the

bottom of the SU(2)3. With one hand hold SU bracket and SU.

4. Remove sensor unit bracket and SU by removing threeBolts (3) on SU bracket.

5. Remove SU from bracket6. Replace with new SU7. Place belt back on between SU Cogwheel and motor

timing pulley.8. Insert SU Drive shaft into Transceiver support tube (4)9. Apply Loctite 243 on bolt(3)10. Push SU bracket to the left and secure it with bolts (3)11. Connect DSUB(1)12. Use Cable Tie to fasten SU Cable under SU13. Complete procedure for re-calibration of rate sensors and inclinometer, “test 3”

(described in section “ Installation”) 14. Check Belt tension


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15. If needed adjust belt by loosening motor, 4 bolts (5) and moving motor up/down and when belttension is correct tighten bolts(5) fastening the motor. Note! Use loctite 243 or similar on bolts

4.6.2 Configuration of new SU

Eeprom values stored in SU will need to be set, connect to BDE using telnet and verify that registerscontain correct value:

Read Command Should read To Set Value command Description

Rep 2 21Rep 2 22Rep 2 23

Mechanical Main Rev No Mechanical sub rev no ADE serial no

sep 2 21 Xsep 2 22 Ysep 2 23 Z

X = Main revisionY = Sub revisionZ = Serial number

4.6.2.1 Example of reading and setting Eeprom values

All values can be read by typingRep x y Where x is the Eeprom number and Y is the register

All values can be set by typingSep x y Where x is the Eeprom number and Y is the register Note! Values are directly set into registers

4.6.3 Calibrating rate sensors and tilt sensor after exchange of Sensor Unit

It is strongly recommended that the Vessel is in port. The calibration can also be performed at sea

but then it is important that there is none/minimal sea movements and that the vessel is not turningin Azimuth,

1. Enter the radome2. Connect to wireless Zone in radome.3. Enter Menu “System -> calibration” 4. Press button “Invalidate”. This will delete all previous calibration data for Tilt and rate sensors

all graphs and table values will be deleted. 5. Start a Telnet session to 192.168.0.2

Login with user: cliPassword: telnetType: “test 3” The antenna will enter test mode and all brushless DC motors will be powered off and stabilization

will be turned off.6. By hand move the antenna in XEL and EL until the Level on top of the sensor unit is in level


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7. Again type test 3 – tilt sensor is calibrated – rate sensors will continue to calibrate.8. Wait until brushless DC motors re-powers9. Press Button “Download” under calibration menu in web interface. New calibration data for tilt

and rate sensor will be downloaded from ASU to SQL database in BDE.

10. Power cycle antenna by switching off and on circuit breaker11. Observe that the antenna initialize correctly.

4.7 Transceiver

Workflow:1. Physically replace Transceiver

2. Calibration of polarisation, “test 5” Tools

• 3mm Allen Key• 11mm Wrench• 6 mm wrench• 15mm wrench• Cutting pliers• Loctite 243 or similar

4.7.1 Removing Transceiver

• Step By Step procedure, reference numbering refer to drawing below.1. Remove belt on potentiometer by:

a. Turn Transceiver to CW position b. Put finger on potentiometer belt as shown belowc. Roll off belt by rotating transceiver CCW and gently applying pressure to belt with finger

2. Loosen pol step motor bracket, 3 bolts(2), to get ”slack” on drive belt to transceiver cogwheel.3. Cut tie-wrap(3) located at upper side of the Yoke holding RF cables to get ”slack” on RF cables 4. Disconnect TX and RX connectors on Transceiver (4)5. Loosen lock nut (5)6. Unscrew 2 turns on the bolt tightening the transceiver (6)7. Remove 6 bolts (7) fastening the rear supporting mechanism (9). Note inside centre of rear support

mechanism there is a bearing and two washers, see drawing (8).

8. Gently take out transceiver, and when reachable cut the 2 tie-wraps holding the RF cables to the bracket on the transceiver inside the supporting tube.9. The transceiver can be removed.


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4.7.2 Inserting new Transceiver

• Step by step, numbers in parentheses are references in drawing.1. Verify potentiometer is rotated to the CW end-stop.2. Connect Tx and Rx connectors to the transceiver. (4)

3. Fasten RF cables to the Bracket on transceiver using tie wraps.4. Gently insert transceiver into supporting tube, at the same time guiding RF cables out of the front

end of the tube.5. Place belt from motor onto transceiver cogwheel, access the belt in the front hole of the tube and

slide it on by rotating the transceiver from side to side.6. Insert rear suspension (9), Note to be sure that the washer (8) is located in centre. If there is not

enough space to completely insert the rear suspension: check that the transceiver is completelyinserted to the front towards the feed, if so then loosen centre tightening bolt (6).

7. Verify free turn in operational range8. Use Loctite 243 or similar on bolts (7) and tighten bolts for rear suspension.9. By hand push transceiver forward towards the feed and by hand tighten maximum ”centre

tightening bolt”(6) then turn it ¼ turn back.

10. Ensure that ”tightening bolt” (6) remain in this position while Lock nut(5) is securely tightenedusing a wrench.

11. Put Loctite 243 or similar on pol. Motor bracket bolts(2),12. Tighten belt between motor bracket and transceiver by moving the motor bracket upwards, secure

motor bracket by tightening bolts (2). Note ! Do not tighten belt to hard, you should be able to twist belt 180 degree, ref section belt tension.

13. New Cable tie fastening the RF cables to the Yoke(3)14. Set transceiver and potentiometer in CW end of operational range.Note! M ove potenti ometer

gently towards the end stops so end-stop do not break. 15. Turn potentiometer approximately ¾ turn CCW approximately 4 “strokes” with finger. ( out

of end stop ),

16. Put potentiometer belt on potentiometer timing pulley17. Put potentiometer belt on upper part of potentiometer motor pulley, holding it with a finger and roll belt on by turning the transceiver in CCW direction.

18. Check full operational range of transceiver and no special friction19. Start system and observe initialisation20. You will probably get an alarm due to polarisation not calibrated21. Run “test 5” to calibrate new potentiometer values for transceiver operational range


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Finger


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Removing potentiometer belt

- Turn Transceiver to CW position- Put slight pressure on belt

- Turn transceiver CCW- Belt rolls off

Installing potentiometer belt

- Turn Transceiver to CW position

- Turn Potentiometer to CW position(gently not to break end stop)

- - Turn potentiometer approximately ¾ tur n

CCW, approximately 4 “strokes” with

finger. ( out of end stop ),

- Put potentiometer belt on potentiometertiming pulley(1)

- Put potentiometer belt on upper part of

potentiometer motor pulley(2), holding itwith a finger and roll belt on by turning thetransceiver in CCW direction.


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4.7.3 Calibrating polarisation values after exchange of Transciever

1. Enter the radome2. Connect to wireless Zone in radome.3. Start a WEB session to BDE, 192.168.0.2

4. Enter Uc Trace view by:a. Opening “System -> regulation Status” b. Press button “View uC Trace”

5. Start a telnet session to BDE, 192.168.0.26. Login with user: cli , password: telnet7. Type in: “test 5”

The transceiver:

a. Turns CCW to mechanical end stopb. Turns CW until mechanical end stop,

c. 2-3 degrees out of CW Mechanical end stop

d.

Moving CW stopping every 20 degree inserting Potentiometer references into Eeprom.e. During the calibration the WEB window of uC trace will update and report status, if not

successful select “stop trace” to prevent scrolling and navigate up to calibration results. Please see example below of successful calibration.

8. When sensor unit starts to move, power cycle antenna by switching off and on circuit breaker9. Observe that the antenna initialize correctly and points towards the satellite.

uC trace resul tsIf calibration of polarisation is unsuccessful scroll up in the uC trace and find potentiometer readings, asshown below.

1. Results from “reading 1” are potentiometer readings for every 20 degree turn of polarisation rotating transceiver CCW.

2. Results from “reading 2 are potentiometer readings for every 20 degree turn of polarisation rotating transceiver CW.


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3. The values of readings 1 and 2 are the voltage read, the value will vary from installation toinstallation and is dependent on position of potentiometer.

4. To be observed:a) The numeric difference, delta value, between each reading should be

approximately: 100 – 130 units b) Malfunction caused by friction may be indicated by:1. If most of the readings are separated be 100-130 units but some readings

are separated with less numeric spacing may indicate too high friction inthis/these areas of operation

2. If numeric values in reading 1 and reading 2 differ more than 5 units thismay indicate Friction:

3. Check friction by turning power off and rotate transceiver, also ensure thatthe RF cables do not cause friction at certain position.

c) Constant reading may indicate:1. transceiver not rotating.2. Potentiometer not rotating.

3. Defect potentiometer.

Extract of uC trace running “test 5” calibration if polarisation

4.7.4 Polarisation Motor & Potentiometer

1. Turn Transceiver to CW position2. Put finger on potentiometer belt as shown below3. Roll off belt by rotating transceiver CCW and gently applying pressure to belt with finger4. Cut Tie wraps (1)5. Disconnect motor and Potentiometer cable6. Use 3mm Allen Key and remove bolts(2)7. Remove bracket8. Note! If replacement bracket has potentiometer belt on please remove this by:

a. GENTLY! rotate the potentiometer to CW end stop. ( not to break end stop) b. Put finger as shown below

c. Roll off belt by rotating Potentiometer CCW.9. Place Bracket onto the Cradle fastening, do not tighten it should be possible to move bracket up

and down, with only the one bolt (2) on the right hand side of the bracket.10. Ensure that transceiver drive belt is around cogwheel on transceiver and put it on motor timing belt

pulley.11. Put finger in hole (3) and tighten belt (should be possible to twist ½ turn)12. Secure bracket with bolts (2). Note! Use Loctite 243 or similar.13. Set transceiver in CW end of operational range.14. Gently rotate Potentiometer to CW end of operational range.

( Note! Move pot-meter gently towards the end stops so end-stop do not break.)

15. Turn potentiometer approximately ¾ turn CCW, approximately 4 “strokes” with finger. 16. Put Potentiometer belt on potentiometer timing pulley17. Put potentiometer belt on upper part of potentiometer motor timing belt pulley, holding it with a

finger and roll belt on by turning the transceiver in CCW direction.


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18. Connect motor cable19. Connect potentiometer, cables are labelled with Potentiometer Pin Number

a. Yellow pin 2/wiper b. Red Pin 1

c. Black Pin 320. Apply tie wraps (1)21. Verify that transceiver turns freely in complete operating range22. Power on antenna and Run Calibration of polarization “Test 5 (described in section Exchange of

Transceiver)

FingerTransceiver drive belt

First bolt to be entered

durin assembl

First bolt to be entered

durin assembl

Connecting Potentiometer:

1. Connection Point 1 – Red Cable2. Connection Point 2 (Wiper) Yellow cable

3. Connection point 3 – Black Cable


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Removing potentiometer belt

- Turn Transceiver to CW position- Put slight pressure on belt

- Turn transceiver CCW- Belt rolls off

Installing potentiometer belt

- Turn Transceiver to CW position

- Turn Potentiometer to CW position(gently not to break end stop)

- - Turn potentiometer approximately ¾ tur n

CCW, approximately 4 “strokes” with

finger. ( out of end stop ),

- Put potentiometer belt on potentiometertiming pulley(1)

- Put potentiometer belt on upper part of

potentiometer motor pulley(2), holding itwith a finger and roll belt on by turning thetransceiver in CCW direction.


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4.8 Polarization alarm troubleshooting

In case of “regulator alert” alarm, check register 100 to see if polarization is the cause. This is done in the CLI. (telnet)

Start by connecting to the BDE and use a telnet application to access the CLI.(Standard address is 192.168.0.2)

Log in with credentials user: cli password: telnet

After logging in use command “rtr 100” to read register 100, this is a general alarm register and ifreturned value is:

o 0 - All is well no alarmo 32 - The alarm is related to polarizationo 96 - The potentiometer is not calibrated. (This can occur if calibration of potentiometer,

“test 5”, have failed.)

(in example value “0” is returned meaning no error.)

4.8.1 Checking potentiometer readings

A manual check of the potentiometer can be done by setting the antenna in hold mode. This is done byeither going in to the pointing menu of the web interface or by entering the CLI command “pause”


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Then one can run the transceiver to various positions using the “ tilt value” command, value givenin degrees. Normal span is from -37 to 144 degrees approximately.

The potentiometer reading can be read via the“rs 7 ” command which reports the unfiltered andunscaled value.

Try moving the transceiver and read “rs 7” and see if the value changes. It should give a more or

less linear curve. If the potentiometer is broken or the transceiver is stuck, typically this value willnot change much. ( On current HW version 2.1, a polarization move of 1 degree in polarization isAverage/approximately 5.7 units in register RS 7)


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The ASU has a pre-stored table of potentiometer readings for every 20 degree. This table is createdduring Potentiometer calibration, “test 5”.

This Table is used to calculate the polarization error by comparing the value in the table to the

current reading, The limit before rising a Potentiometer Alarm is 2 degrees. (200 in cli)The estimated polarization error can be read via test register 166.(cli command “rtr 166”)

The table is stored in a EEPROM (index 113-122) and is stored when running test 5. If test 5 failsthe EEPROM table is cleared (all values set to -1).

The EEPROM values can be read manually, CLI command rep 1 113, rep 1 114….. Values aredisplayed during start-up (might be difficult to start trace early enough to catch this, but running“test 25” will re-read and display EEPROM values ( use ”str 209 1” command first to avoid

restarting). When plotting the EEPROM values they should give a more or less linear curve(decreasing). Values should decrease in steps of approx. 110 – 125.

Ready for Command:rep 1 113uc eeprom [113] = 2260Ready for Command:rep 1 114uc eeprom [114] = 2134Ready for Command:rep 1 115uc eeprom [115] = 2012Ready for Command:rep 1 116uc eeprom [116] = 1887Ready for Command:rep 1 117uc eeprom [117] = 1760Ready for Command:rep 1 118uc eeprom [118] = 1634Ready for Command:rep 1 119uc eeprom [119] = 1508Ready for Command:rep 1 120uc eeprom [120] = 1381Ready for Command:rep 1 121uc eeprom [121] = 1253

Note that the tilt command will work within the limits given by the test registers

“R_POL_START_CDEG” and “R_POL_STOP_CDEG”. The control SW will implement unwrap.Running test 28 will run transceiver to end point.


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4.8.2 Checking step motor current

We have the possibility to monitor the current in the step motors. This is done from the cli running the rscommand (rs = read sensor).rs 22 gives the current in the step motor

This is just an unscaled adc value, but gives an indication of the current used. The measured current is thecombined current to the step motors. The current depends on whether one or two coils are powered in thestep motors.

The step motors runs the following conditions.Sens motors: one or two coils (runs and holds in in half-step mode which, gives the best accuracy)Polarization motor: holds using one in order to minimize power consumption and runs using two coils inorder to give maximum torque.The step motors will draw current when attached and the measured current will depend on whether themotors are running or only holding.The motors can be tested by setting the antenna in hold mode (in cli:” pause”) and running the step motorsmanually (in cli: “el value” or “tilt value” , value given as degrees).

No motors attachedrs 22 gives the value 0.

Pol motor not attached (running sens motor)Holds step motor: fixed value approx 150 or 300Running sens step motor: toggling between approx 150 and and approx 300

Sens motor not attached (running sens motor)Hold pol motor: approx 150Running pol motor: approx 300

Both motors attached (not running sens motor)Holds pol motor: approx 300 /450 depending on elevation motor holdig one or two coils.Running pol motor: approx 450/600

Note: It is not possible to see if transceiver is stuck or not from reading the current, but at least one can seeif there is any problem with the step motor cables or motor. At least when running the pol motor themeasured value should be larger than the hold current.It should be possible to see if sensor box is moving, but then one must turn off tracking in elevation. ’ cli: pause(to enter hold mode)cli: str 21 0 cli: el value (to run sensor box)cli: rs 2 The value reported gives the elevation rate sensor which should change.

4.8.3 High elevation polarization error

Note that for very high elevation (> 85 ) we can get polarization alarm if azimuth pointing is off.

The normal satellite tracking does not work in the same way for very high elevation so here the B120adjusts the azimuth based on gyro input.

(For system release 2.11 this alarm occurs at 75 , but in the 2.11_Branch 3 the alarm threshold is increased

to 85 .)


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4.8.4 TEST REGISTERS

Test register values are used to report or to control the MCSW. Test register values will be cleared afterrestart or get some default value. In order to permanently change parameters this must be done by changingcode or some parameter can be change by writing to the EEPROM.

Test

register

NAME Explanation

100 R_ALERT_STATUS If polarization alarm (bit 5 is set =32)If no potentiometer values in EEPROM (bit 6 is set = 64).

105 R_ALERT_POL_CLEAR Writing 1 to this register clears the polarization alarm. The SWwill go on and ignoring this alarm. The value will be clearedafter a reset.Important: Avoid transmitting when this register is set.

166 R_DF_POL Value given in [cdeg] and gives polarization error. Givesdifference between measured value and reference value. Thereference values are set during test 5.1 The default threshold is

200 (2 )

The direct reading from the potentiometer can be read via

the cli command: rs 7This value should change linearly when rotatingthe transceiver. If potentiometer is broken or transceiver stuckthe register will have a fixed value. In earlier SW releases (priorto 3.5) register 166 is not given in cdeg, and must be scaled up by 1.5.

167 R_POT Direct reading of potentiometer, only in v3.69 or later

209 R_SKIP_INITIALIZATION If set to 1, abort normal initialization, load eeprom values andgoes directly to regulation mode. Normally test 5 will lead to a complete restart, but this canavoided. After a restart this register is cleared!

248 R_POL_START_CDEG Start value for polarization setting in cdeg

249 R_POL_STOP_CDEG Stop value for polarization setting in cdeg

Read test register (rtr index). Write test register (str index value)

4.8.5 CHANGING THRESHOLD FOR POLARIZATION ALARM

The threshold for polarization alarm is default +/-2 . This value is the default value. It is possible to modifythis value by writing to EEPROM register 131 ( sep 1 131 value for setting value and reading back by rep

1 131). The value will not be cleared after a reset. If the EEPROM value is -1 one it will use the defaultvalue (200). Important: Avoid transmitting when this EEPROM value is set above 200.


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4.9 Belt Tension

Belt tension should be verified by twisting the belt in the centre using hand force.a) Motor to gear Belt: Approx. 1/8 turn

b) Gear to Pulley Belt: Approx.¼ turn

c) Pol motor and SU motor belts are thinner and should be : Approx ½ turn


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4.10 Exchange of Elevation Drive Belt

Tools:

LocTite 243 or similar thread lock

3mm Alan Key4mm Allan Key8mm Wrench

4.10.1 Procedure

1. Move antenna Up to max elevation2. Put finger and pressure on belt as shown below and at the same time lower the antenna elevation,

“rolling” the belt of the cogwheel.

3. Completely loosen bolts 1,2,3 but leave them inserted to hold the elevation cable run in place.4. Loosen bolt 4 so that the cable run can be tilted as shown under and the 4mm Allan key get access

to the belt fastening bolt

2

3

4


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5. Use 4 mm Alan Key and 8mm wrench to loosen and remove bolt fastning belt


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6. Before loosening the last bolt (number 4) Please note that cable run consists of 3 parts, outer metalring, center ring and inner ring. So when loosening bolt 4 its important to have a good grip on outerand inner metal plate, and that all bolts are in place. See next section

If you lose the grip the cable run may come a part.


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7. Remove the last bolt holding the cable run ( bolt number 4) – leave the bolts in as shown below andhave a good grip on the inner and outer plate.

8. Remove belt and put new one back on


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9. Gently put back cable run and fasten bolt number 4

2

3

4


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10. Fasten the belt to the cogwheel


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11. Fastening cable run, use Loctite – just a drop and clean off excessive LoctiteRemove two bolts from cable run and apply Loctite and repeat for the two other bolts

12. Move antenna to maximum and minimum Elevation while checking that cables run freely withoutfriction inside cable run


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13. Move antenna down to minimum Elevation and put belt on gear and part of the cogwheel as shown below:

14. Hold your finger on belt while moving antenna up in Elevation and belt ”rolls on” the cogwheel, donot force the belt on.

15. Check belt tightness and adjust elevation bracket if belt requires to be adjusted.


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4.11 Slip Ring / Rotary Joint exchange

Work Flow:

The slip ring and rotary joint can be exchanged individually but is in the same procedure due to being

mounted together.

1. Physical exchange of unit2. Install new unit

Tools

3mm Allen key

2.5mm Allen key

Flat screwdriver

Cutting pliers

8mm wrench (SMA torque wrench)

11mm wrench12mm wrench

Loctite 243 or similar

4.11.1 Removing slip ring / rotary joint unit(s)

The slip ring and rotary joint is located in the centre hub of the AZ axis.Remove ASU, ref section 4.5.1 of this manual.

1. Disconnect SMA connectors on top of the rotary joint using SMA wrench (8mm)

2. Remove 6 screws holding the cable bracket.**3. Cut cable tie holding power cable.4. Remove / lift up cable bracket.


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5. Disconnect the RF cables on the base of the pedestal using a 12mm wrench.6. Cut the cable tie holding the power cable on the base of the pedestal.

7. The slip ring and rotary joint can now be lifted up, make sure to feed the RF and power cable fromunderneath as you pull up.


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8. Unscrew the RF cables on the underside of the rotary joint using a SMA wrench (8mm)9. Unscrew 4 screws holding the rotary joint to the slip ring using a 2.5mm Allen key, the rotary cannow be removed or exchanged from the slip ring.

10. In order to exchange slip ring, disconnect the power cable at the clamp terminal. NOTE: make sure

pedestal is disconnected from power source as potentially lethal voltages may be present.


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11. The slip ring can now be removed.

4.11.2 Installing new slip ring / rotary joint unit(s)

Reverse procedure above using new unit(s).

Make sure TX and RX are correctly connected; TX uses centre channel and RX side channel of therotary joint.

Do not over tighten SMA connectors, preferably use SMA torque wrench when reattaching.

**Do not over tighten cable bracket screws entering POM on top of the assembly. (ref point 2 inabove procedure)

Always use Loctite 243 or similar on all screws.


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4.12 Cable modems

ACMU – Above Deck Cable Modem UnitBCMU – Below Deck Cable Modem Unit

Cable Modem units CMU, enables communication between ADE and BDE there is one unit located at the back of the pedestal in the ADE and for single antenna system one unit located in the BDE, and 2 CM inBDE for dual antenna system. The intercommunication is modulated on to the RX cable at 2.4GHz. TheCMU are configured as a pair, repeat mode, where the respective MAC addresses are configured to enablethem to communicate. Replacement of one or both unit will require change of CMU configuration in bothACMU and BCMU.

IP Settings

Single antenna IP configurationACMU: 192.168.0.14BCMU: 192.168.0.5

Dual Antenna IP ConfigurationAntenna 1ACMU: 192.168.0.14BCMU: 192.168.0.5

Antenna 2ACMU: 192.168.0.13BCMU: 192.168.0.6

Overview

There are two types of cable modems, See difference in appearance below.Type 1 Type 2

Type 1:

• Configuration of cable modems via WEB Interface, connect to CMU IP address in browser• Username = • Password = admin

• WLAN• Device name / SSID: Jotron120#xxxx (xxxx = Antenna serial no)• WPA-Personal with TKIP encryption.• Passphrase: J0t@0n120

• Communication between BDE and ADE, WLAN over Rx Cable, 2.4GHz.• Physically identical units in BDE and ADE• Configured in Repeater Mode• MAC address of other unit must be programmed.


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LED Activity:

Normal activity during operation:Red: Indicates power to the CMU, will more or less light constantlyOrange: indicates physical link on Ethernet cable will blink during traffic on Ethernet cable.Green: Indicates ready for wireless use and blinks during traffic via Wireless port.

At power on/ Initialization LED Activity:1. Red and Orange momentarily light up2. All LEDs Off ( approx. 3 sec)3. Red and Orange lights up4. Orange slowly blinks, Red lights constant

5. Then green starts to blink and orange go off while red is on6. Orange and green blinks and red is constant on.Duration of complete initialization is approx 10 Seconds.

Type 2:

• Configuration of cable modems via WEB Interface, connect to CMU IP address in browser• Username = admin • Password = admin

• WLAN• Device name / SSID: Jotron120#xxxx (xxxx = Antenna serial no)• WPA2 Personal Mixed with TKIP/AES encryption.

• Passphrase: J0t@0n120• Communication between BDE and ADE, WLAN over Rx Cable, 2.4GHz.• Physically identical units in BDE and ADE• Configured in Repeater Mode• MAC address of other unit must be programmed .

LED Activity:

1 2 3 4

Normal activity during operation:1: Indicates ready for wired lan use and blinks during traffic via wired port.2: Indicates ready for wireless use and blinks during traffic via Wireless port.3 : PoE (not in use)4: Indicates power to the CMU, will more or less light constantly

Power on/ Initialization LED Activity:

1. Power LED lights up for approx 5 sec.2. All LEDs light up ( approx. 3 sec)3. Wireless LED will start blinking

4. When communication is established with other CMU wired LED will blink indicatingtraffic.


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4.12.1 Fault finding

SymptomsDefect CMU will cause BDE to ADE communication to fail, e.g. status in JRAS “no contact with pedestal”

Quick check is to ping network units:ACC: default 192.168.0.2BCMU Single Antenna: 192.168.0.5ACMU Single Antenna: 192.168.0.14ASU (Blackfin) : 192.168.0.15

4.12.1.1 Fault finding from BDE

Connect PC to BDE Ethernet port in front on BDE or local/switch Ethernet port at the rear of the BDE.

- Check if one can access the BCMU and /or ACMU.

- If both CMUs are accessible it indicates that the CMUs are OK and that the problem layelsewhere.

- If only BCMU is accessible it indicates that the issue may be:- Faulty ACMU HW or configuration

- Faulty ACMU-BCMU configuration

- Fail in Rx Chain between ACMU and BCMU

- If no response when accessing ACMU nor BCMU, it may be due to:

- faulty BCMU HW or configuration

- Faulty BDE Ethernet switch or Ethernet cables inside BDE

- Try IP-connection to the Access controller:

- If access fails the problem may be:

- Switch

- Access Controller

- Internal Ethernet cabling in the BDE.- IF OK it indicates a faulty BCMU and/or BCMU configuration.


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4.12.2.1 Procedure to remove ACMU

Tools neededAllen Key 3mm (ACMU Enclosure)Screw driver small straight ( D-SUB)

11m Wrench ( F-connector)

1. Make note of new ACMU Mac address2. Disconnect Ethernet Cable3. Remove disconnect RF cable4. Using Allen key remove ACMU enclosure from bracket5. Disconnect D-Sub6. Follow the above steps in reverse order to mount replacement ACMU

(NOTE! when tightening the F connector for the ACMU do not tighten to hard, tighten until snug(30lbs / 3.4nm of torque.). Do not over tighten this F connector.)

7. Configure the ACMU and BCMU

31 2 4


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4.12.2.2 Procedure to remove BCMU

BCMU located below Switch and net filter

1. Make Note of new BCMU MAC address.2. Remove lid of BDE3. Turn the BDE upside down and loosen 6 screws fastening the Switch bracket and ACMU

4. Turn the BDE around with bottom down

5. Loosen 2 screws on the side holding the switch bracket.

6. Disconnect cables from Switch and remove the switch incl. The bracket and net filter7. Disconnect cables from BCMU.8. Follow the above steps in reverse order to mount replacement BCMU

(NOTE! when tightening the F connector for the ACMU do not tighten to hard, tighten until snug(30lbs / 3.4nm of torque.). Do not over tighten this F connector.)

9. Configure the ACMU and BCMU

Fasteningscrew forBCMU

Fasteningscrew forSwitch

bracket

Fasteningscrew forSwitch bracket

SwitchNet

filter


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4.12.2.3 Configuration

After replacement of a CMU both the ACMU and BCMU need to be configured to work in repeat mode.

Below is step by step procedure to configure the CMUs in repeat mode.

Type 1: (3 LEDs)

1. Bring note of MAC address of new CMU.2. Start configuring at location where original CMU is located ( not the exchanged unit)

a. If in ADE Use either:a. Preferably connect via WLAN leaving the cabling as it is. b. Ethernet cable between ACMU and Service PC

3. Start PC, configure PC to fixed IP address: 192.168.0.(100-254)4. Start WEB browser and connect to IP address of original CMU.5. You will be prompted for username and password:

• Username = • Password = admin

6. Make note of ( Tip.: is to intermittently use copy paste function into a text editor to ensure correcttyping):

a. Original CMU: Channel ID b. Original CMU: SSID

c. Original Passphrased. Original CMU: MAC Address

7. Configure original CMU:a. In menu “Setup -> AP Mode” replace existing MAC addr ess with MAC Address of

replacement CMU. b. Press “Save settings to save changes.

8. Enter location of new CMU9. Connect PC to Ethernet or WLAN( if in ADE)10. Configure PC with IP in range 192.168.0.(100-254) 11. Start WEB browser12. Spare Cable modem unit will either have IP 192.168.0.5 or 192.168.0.1413. Type IP address of CMU in the address field of WEB browser.14. You will be prompted for username and password:

• Username = • Password = admin

15. Configure cable modem unit with correct IP addr.( Menu: “Setup -> Network Setup”):a. BDE 192.168.0.5 for single antenna and “antenna 1” in dual configuration. b. BDE 192.168.0.6 for antenna 2 in dual antenna configurationc. ADE 192.168.0.14 for single antenna and “antenna 1” in dual configuration. d. ADE 192.168.0.13 for antenna 2 in dual antenna configuration

16. Enter original CMU MAC address in Menu “Setup -> AP Mode” for “Wireless Repeater” 17. As noted for original CMU, in menu “Wireless – Basic Wireless Settings” , Enter correct:

a. Channel ID

b. SSID18. Enter Passphrase as noted for original CMU, menu “wireless – Wireless Security”


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Own MAC

Address

MACAddress of

other CMU


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• Mode: Mixed • SSID: Jotron120#xxxx (xxxx = Antenna serial no) • Channel: Default channel 11 (Note! ACMU and BCMU must be on same channel)

• SSID broadcast: Enabled

• Security Mod: WPA-Personal • Encryption: TKIP • PassPhrase = J0t@0n120 (Note! only zeros, No ”o”) • Key Renewal: 300


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Own MAC

Address

MACAddress of

other CMU


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• SSID: Jotron120#xxxx (xxxx = Antenna serial no) • Channel: Default channel 6 or 11 (Note! ACMU and BCMU must be on same channel) • SSID Broadcast: Enabled

• SSID, Select SSID Name defined above.• Wireless Isolation (between SSID) : Enabled • Security Mode: WPA2-Personal Mixed • Wireless Isolation (Within SSID) : Disabled • PassPhrase: J0t@0n120 (Note! only zeros, No ”o”) • Key Renewal Time: 3600


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4.13 Mechanicle check in ADE

• Verify unlimited AZ movement and that the antenna runs freely in AZ

• On XEL and EL axis there is a protection break but you can check that the antenna moves

freely to physical end-stops in these axes.• Verify that Sensor Unit runs freely between end stops

• Verify that Transceiver runs freely between end stops

• Check that all cables are connected properly.

• Check tension on motor and gearing belts

• Visually inspect that bolts and nuts are secure

• Visually inspect for any corrosion or other type of material damage.

• Inspect ventilation holes in the radome bottom, should not be blocked.

5. CABLING

5.1 ADE BDE RF cables

The Jotron 120B RF cables between ADE and BDE require a maximum of 15dB loss at 2.2GHz. If theVSAT Modem is not preinstalled and co-located with the BDE, the cable loss between the BDE and theVSAT modem shall be maximum 2 dB at 2150MHz.

Ethernet cables (Modem and ship’s LAN), select a mounting location within 25 ft (7.5 m) of the VSATmodem and ship’s LAN(maximum length = 200 ft (60 m)).


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5.2 NMEA

The supplied PC opto-isolator cable connects the BDE to the NMEA of the ship’s compass. The suppliedcable contains a opto isolator to create a galvanic separation between the ships equipment and the BDE, theopto-isolator cable will from revision 2.3 of Jotron B120 BDE (P/N 60149) be integrated inside BDE.

It is also possible to extract GPS information from BDE to modem. (optional)

NMEA Port: 4800,8,N,1

Sentences supported:GPHDG: Heading Deviation and variationGPHDT: Heading trueHCHDG: Strictly magnetic heading, deviation and variationHEHDT:INHDT:

Position

GPGGA:GPRMC: Recommended minimum specific GPS/TRANSIT data

Standard Wiring Diagram: Note: Local connection variations may occur,

Service Guide Jotron B120 Revision A

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Transcript of Service Guide Jotron B120 Revision A