
MNC-0400-001 38 of 54 REV H
Operation, Rack and Digital HPAs
F = Fault; turns high voltage off and turns the buzzer on
A = Alarm; turns buzzer on but does turn HV off.
Table 4, TWTA Fault and Alarm List
Fault Log Abbr. Display Name Comments
F fanlck Fan Lock (Function Disabled)
F ovrtmp TWT Over Temp - Signal from temperature
monitoring point on TWT
F tubtmp TWT Over Temp - Signal from secondary
thermal switch built into the TWT
F tubhot TWT Over Temp in dual drawer units -
Signal form the thermal switch built into
the TWT
F su\plhot Power Supply overtemperature on dual
drawer units - Signal from the temperature
monitoring point in the power supply
drawer
F vswr VSWR Reflected Power
F hvundr HV Under
F hvover HV Over
F lowlne Lowline
F hamomt Momentary Helix Arc
F haltch Helix Arc (Latched)
F cvrint Cover Interlock
F extint Local Interlock
F wg arc WaveGuide Arc
A maxpwr Max Power Alarm Software Alarm
A minpwr Min Power Alarm Software Alarm
A maxrft Max Reflected Alarm Software Alarm
F maxpwr Max Power Fault Software Fault
F minpwr Min Power Fault Software Fault
F maxrft Max Reflected Fault Software Alarm
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