Comtech EF Data CDM-625 - 5.2.3 SELECT: Monitor Menus

CDM-625 Advanced Satellite Modem Revision 13
Front Panel Operation MN-CDM625
5–71
5.2.3 SELECT: Monitor Menus
Monitor: Live-Alarms Stored-Events ACM
Statistics Rx-Params AUPC CnC IP ()
Use the
◄ ►arrow keys to select Live-Alarms, Stored-Events, ACM, Statistics, Rx-Params,
AUPC, CnC, or IP, and then press ENTER
.
5.2.3.1 Monitor: Live-Alarms
Live Unit=None Net=None
Alarms Rx=Demod Lock Tx=No Clock ()
Live BUC=None
Alarms LNB=None ()
Six alarm types are available between two screens, as shown in the preceding examples. Use the
▲▼ arrow keys to navigate between these read-only pages. The highest priority alarm
currently active for each of the alarm types is as follows:
Alarm Type
Description
Unit
PSU
Power supplies (+5V, +12V, -5V, +18V, -12V) are always monitored by
an onboard supervisory IC.
Tx and Rx Synth
The PLLs in the IF sections are monitored for an unlocked condition.
Power Cal
Calibration dat a stored i n EEPROM i s checked at power-up t o verify
that the factory calibration has not been corrupted.
FPGA
Downloads are verified to have been loaded successfully.
Hi-Stab Freq Ref
Module
No PLL Lock – This will suppress the Tx carrier.
Tx
(Transmit) No Clock
Clock activity from the Tx terrestrial source is checked if expected. The
modem f alls bac k t o t he i nternal SCT c lock t o dr ive t he m odulator if
clock activity is absent.
FIFO Slip
Alarm oc curs w hen t he t errestrial c lock s ource di ffers f rom t he
programmed data rate, or may indicate a hardware failure.
Tx AIS
Alarm Indication Signal (all 1’s) is monitored at the Tx terrestrial input if
present.
AUPC Level
A Tx alarm occurs if the power increase limit has been reached when
AUPC is enabled.
Hi-Stab Freq Ref
Activity Fault
Reference not present; unit falls back to its internal 10MHz.
BUC summary alarm
May occur only if ABA is enabled.
G.703 Loss of Signal
May only occur in Clock Extension Mode.