Comtech EF Data CDM-570 - Manual (Page 120)

CDM-570/570L Satellite Modem with Optional IP Module Revision 12
Front Panel Operation MN/CDM570L.IOM
5–34
5.2.2.2 SELECT: Monitor
MONITOR:Alarms Rx-Params
Event-Log Stats AUPC ODU
Use the
◄ ► arrow keys to select Alarms, Rx-Params, Event-Log, Stats, AUPC, or ODU,
andd then press ENTER.
5.2.2.2.1 MONITOR: Alarms
IMPORTANT NOTE: The CDM-570L uses a system of Fault Prioritization. In each
category of fault, only the highest priority fault is displayed. For instance, if the
demodulator is unlocked, it is irrelevant if there are other receive faults present.
If the demodulator then locks, but there is a fault of a lower priority present, this
will then be displayed. This also holds true for the faults reported via the remote
control. This system cuts down significantly on unwanted and irrelevant fault
reporting.
For CDM-570L modems with ODUs, see Appendix L: CDM-570L ODU (BUC, LNB)
OPERATION for details on selecting this submenu and the listing of prioritized
ODU faults.
Live Alarms:Unit Receive
Transmit ODU (◄ ►,ENTER)
For CDM-570 modems, or CDM-570L modems without ODUs, use the
◄ ► arrow keys to
select Unit, Receive, or Transmit, and then press ENTER. The comprehensive list of prioritized
faults for Unit, Receive, and Transmit is as follows:
LISTING OF PRIORITIZED FAULTS
Unit Faults Rx Traffic Status Tx Traffic Status
1) Power supply fault, +5 volts
2) Power supply fault, +12 volts
3) Power supply fault, –5 volts
4) Power supply fault, +23 volts
5) Power supply fault, –12 volts
6) Tx synthesizer lock
7) Rx 1
st LO synthesizer lock
8) Rx 2 nd LO synthesizer lock
9) Reference PLL lock
10) IP Module fault
11) EEPROM checksum error
1) Demodulator unlocked
2) AGC Alarm - signal out of range
3) RS Frame sync alarm
4) EDMAC Frame sync alarm
5) Buffer Underflow
6) Buffer Overflow
7) E
b
/N
0
alarm
8) AIS detected on incoming data
(from satellite direction)
1) No clock from terrestrial interface
2) Tx FIFO slip
3) Loss of External Reference
4) AUPC upper limit reached
5) AIS detected on incoming data
(from terrestrial direction)
6) Bipolar violation on G.703 interface