COBHAM Sea Tel 9711-56 IMA C Band, Installation Manual

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Sea Tel 9711-56 IMA Installation Troubleshooting
16-1
EAR Controlled - ECCN EAR99
16. Installation Troubleshooting
This section describes the theory of operation to aid in troubleshooting and adjustments of the antenna system. Also
refer to the Troubleshooting section of your ACU manual for additional troubleshooting details.
WARNING: Electrical Hazard – Dangerous AC Voltages exist in the Breaker Box and the
Antenna Pedestal Power Supply. Observe proper safety precautions when working inside the
Antenna Breaker Box or Power Supply.
WARNING: RF Radiation Hazard - This stabilized antenna system is designed to be used with
transmit/receive equipment manufactured by others. Refer to the documentation supplied by the
manufacturer which will describe potential hazards, including exposure to RF radiation,
associated with the improper use of the transmit/receive equipment. Note that the
transmit/receive equipment will operate independently of the stabilized antenna system.
The ultimate responsibility for safety rests with the facility operator and the individuals
who work on the system.
WARNING: RF Radiation Hazard - Prior to working on the stabilized antenna system, the power
to the transmit/receive equipment must be locked out and tagged. Turning OFF power to the
Antenna Control Unit does NOT turn Transmit power output OFF.
The ultimate responsibility for safety rests with the facility operator and the individuals
who work on the system.
WARNING: RF Radiation Hazard - When the transmit/receive system is in operation, no one
should be allowed anywhere within the radiated beam being emitted from the reflector.
The ultimate responsibility for safety rests with the facility operator and the individuals
who work on the system.
16.1. Troubleshooting Ships Gyro Compass problems
Ships Heading display does not follow ships movement and/or you are getting frequent or constant ERROR
CODE 0001. Determine the type of gyro compass that is used on the ship, assure that the GYRO TYPE
parameter is set correctly (refer to the setup section of this manual) and then proceed to the step that lists the
troubleshooting for the correct type of Gyro Compass Signal.
16.1.1. STEP-BY-STEP
1. Verify that the GYRO TYPE parameter is set correctly.
2. Observe the ERROR LED on the FRONT panel. If it is illuminated, this indicates that an error
was detected in the Step-By-Step input. Press RESET on the front panel. If the ERROR LED
illuminates again, the problem is in the four connections to A, B, C and COMMON.
3. Check the connections to the TMS and to the ACU.
4. Measure the voltage between COMMON and A, B, and C. Each reading should either be
near zero or 35 to 70 VDC. If all three are zero, check the repeater fuses. If some read
negative and some read positive or if one reads an intermediate values the COMMON
terminal is not properly connected.