Select: Monitor Menus; Monitor: Live-Alarms - Comtech EF Data CDM-625A Installation And Operation Manual

CDM-625A Advanced Satellite Modem
Front Panel Operation

6.2.3 SELECT: Monitor Menus

Monitor: Live-Alarms

Statistics
Use the ◄ ► arrow keys to select Live-Alarms, Stored-Events, ACM, Statistics, Rx-Params,
AUPC, CnC, or IP, and then press ENTER
6.2.3.1 Monitor: Live-Alarms
Live
Alarms
Live
Alarms
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
Unit
Tx
(Transmit)
Rx-Params
Unit=None
Rx=Demod Lock
BUC=None
LNB=None
Description
Power supplies (+5V, +12V, -5V, +18V, -12V) are always monitored by
PSU
an onboard supervisory IC.
The PLLs in the IF sections are monitored for an unlocked condition.
Tx and Rx Synth
Calibration dat a s tored i n E EPROM i s ch ecked at pow er-up t o v erify
Power Cal
that the factory calibration has not been corrupted.
Downloads are verified to have been loaded successfully.
FPGA
Hi-Stab Freq Ref
No PLL Lock – This will suppress the Tx carrier.
Module
Clock activity from the Tx terrestrial source is checked if expected. The
modem f alls bac k t o t he i nternal S CT c lock t o dr ive t he m odulator if
No Clock
clock activity is absent.
Alarm oc curs w hen t he t errestrial c lock s ource di ffers f rom t he
FIFO Slip
programmed data rate, or may indicate a hardware failure.
Alarm Indication Signal (all 1's) is monitored at the Tx terrestrial input if
Tx AIS
present.
A Tx alarm occurs if the power increase limit has been reached when
AUPC Level
AUPC is enabled.
Hi-Stab Freq Ref
Reference not present; unit falls back to its internal 10MHz.
Activity Fault
May occur only if ABA is enabled.
BUC summary alarm
May only occur in Clock Extension Mode.
G.703 Loss of Signal
Stored-Events ACM
AUPC CnC
.
Net=None
Tx=No Clock ()
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Revision 0
MN-CDM625A
IP ()
()