Terrasat IBUC 3, Operation Manual

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6-6
|
IBUC
3
, IBUC
3 G
Operations Manual: Troubleshooting
Engineered to Endure
• Seal all coaxial cable fittings with putty.
Bad Orthogonal Mode Transducer and/or Antenna
If the antenna feedhorn and orthogonal mode transducer (OMT) are not positioned
correctly, the IBUC will not operate properly.
To position the feedhorn and OMT,
• Refer to the antenna manufacturer’s assembly instructions to verify that the
feedhorn and OMT were mounted correctly on the antenna.
• Establish a communications link with the satellite network operations center
(NOC).
• Guided by NOC staff, slowly rotate the outdoor equipment to the appropriate
position.
• If rotation is impossible, it is likely that there is a problem with OMT and it will
need to be returned to the antenna manufacturer.
LED is Red
A red LED indicates only that a fault (or alarm) has occurred and does not necessarily
indicate that transmission has stopped. A flashing red light indicates a minor alarm and
a solid red light indicates a major alarm. You can communicate with the IBUC to
determine what is causing the fault, and then clear the fault condition.
1. Establish a connection with the IBUC by using any of the M&C interfaces.
2. View the
Alarm Tab on page C - 6 to determine the current alarm.
3. View the Sensor Tab on page C - 9 to determine which sensor reading caused the
alarm.
4. Compare your readings to the thresholds.
5. Adjust the threshold level(s) to bring the reading(s) within specifications and thus
clear the fault
When the fault is cleared, the LED should be flashing green.
Repair Policy
The Terrasat IBUC
3
, IBUC
3 G
and PSUI are not field repairable.
In the event that a failure has been detected, it might be necessary to return the
defective unit to the factory or a factory-authorized service center. The following
section contains instructions for returning a defective unit to the factory for repair.