Comtech EF Data KST-12025 - Manual (Page 86)

Operation KST-12025 Ku-Band Satellite Terminal
4–10 Rev. 1
4.3.2.3 Faults
The FAULTS level is accessible from the SELECT menu (Table 4-4). Faults are similar
to monitor functions, as they display the current fault status of the group being displayed.
Press [
←
] or [
→
] to move between the faults.
The current faults status is displayed as “OK” or “FLT” for each parameter monitored.
“OK” indicates that no fault exists, while “FLT” indicates that a faults exists.
Press [CLEAR] to exit this level of operation and return to the previous level.
The following list outlines the faults monitored in the FAULTS menu. Refer to
Chapter 6 for troubleshooting procedures for each displayed fault.
Fault Description
RESTART M&C microprocessor experienced a restart due to power failure or watchdog timer
time-out.
UPLINK U/L fault caused by synth, U/C, IFLO, or HPA.
DOWNLINK D/L fault caused by synth, D/C, IFLO, or LNA.
5V PWR +5V power supply fault. This is a status only fault and will not turn the transmitter off.
12V PWR +12V power supply fault. This is a status only fault and will not turn the transmitter off.
HPA High Power Amplifier fault. Typically indicates that the amplifier is not present or is
not operating. This fault will turn the RF transmitter off.
LNA Low noise amplifier fault. Typically indicates that the LNA is not present, has failed, or
exceeded the high or low fault window trip point. This fault will not turn the transmitter
off.
U/C LOCK Up converter lock fault. Indicates the up converter is not locked up. This fault will turn
the transmitter off.
USV TUN Up converter synthesizer tuning voltage. Vt-s.
UVV TUN Up converter synthesizer tuning voltage. Vt-v.
D/C LOCK Down converter lock fault. Indicates the down converter is not locked up. This fault
will NOT turn the transmitter off.
DCV TUN Down converter synthesizer tuning voltage. Vt-s.
DVV TUN Down converter synthesizer tuning voltage. Vt-v.
IF LOCK IF synthesizer lock fault. This fault will turn the transmitter off.
IF TUN IF tuning fault.