Teledyne Q-Lite, Инструкция по установке и эксплуатации

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Q-Lite Satellite Modem Installation and Operating Handbook
11-9
11.5 Unit Faults
Fault Text Notes Relays
To
Ter
To
Sat
Other
Unit fault: One or more
PSU rails are out of range.
A PSU line has failed. The unit has a linear supply and
will fail if the mains input is below the specified minimum
level. Check the mains voltage and the internal PCB-
mounted low-voltage fuses.
U TA,TC
RF, TF,
CM
Unit fault: Station clock has
failed. Check clock source. A valid signal cannot be detected on the external Station
clock input. Check the cable and the clock source.
U,D
An internal fault has
occurred. Please consult
factory. This indicates that the software has been unable to
initialise the hardware. Power the modem down and back
up to see whether this clears the problem.
U TA,TC
TF, RF,
CM
Unit fault: Rx backup clock
has failed The clock used when the selected Rx clock fails has also
failed. Contact technical support for advice.
U TA,TC RF
Unit fault: Communications
with the BUC have failed.
Check connections.
Unable to communicate with the BUC, check BUC type &
services are correctly configured.
U TF
Unit fault: BUC PLL failure.
The PLL in the BUC is reporting out of lock. Check
reference clock.
U TF
Unit fault: BUC over-
temperature failure.
The BUC is indicating an over-temperature fault. U TF
Unit fault: Modulator DPLL
has lost lock.
Consult technical support if this alarm cannot be cleared U
Unit fault: Tx Synth has
lost lock.
Consult technical support if this alarm cannot be cleared U TF, CM
Unit fault: Rx Synth has
lost lock.
Consult technical support if this alarm cannot be cleared U TA,TC RF
Unit fault (occurs initially
as unit warning): Operating
temperature exceeded.
This refers to the internal unit temperature, Check the
modem vent slots are clear and the rear fan has not
failed. This alarm is a warning beyond 60 deg C and
becomes a fault at 70 deg C
U,D TA,TC
TF,RF,
CM