Harris Maxiva ULX, Technical Manual

Page: 240 / 308

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