6-4 888-2629-200 10/6/10
WARNING: Disconnect primary power prior to servicing.
Section 6 Diagnostics
Maxiva ULX COFDM Series
6.3.2 Module Faults
Should a module failure occur (say a power glitch) the TCU will initiate a three-strike
action. This action will cause a reset of only the PA Module experiencing the fault and
not the entire transmitter.
The module three strike policy is:
• The TCU will try to restart the module three times within a 10 second
window. After that, if a fault is still present, the module will be turned OFF
until it receives the restart command from the Main Controller (ON
Command).
• There is a 3 second delay between restart attempts.
• The fault-strike restart process is the same as the system restart command, all
of the module faults will be reset.
• During the 10 second three-strike window, any of the nuisance faults will be
reported to the Main Controller.
These are the module faults which will be allowed three strikes:
• Over Voltage Pallet
• Under Voltage Pallet
• Over Temperature Module Controller
• Over Current Module Driver
• Over Temperature Pre-driver Heatsink
• Over Drive Module RF Input
• Over Drive Module RF Output
• Under Current Phase and Gain Board
• Over Current Phase and Gain Board
• Over Current Pallet
• Under Current Pre-Driver
• Over Current Pre-Driver
• Over Temperature Power Supply Board
• Low Voltage Output DC Converter
• Short Circuit
• High Module Reflected Power
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