Comtech EF Data CDM-570L Installation And Operation Manual page 167

CDM-570/570L Satellite Modem with Optional IP Module
Front Panel Operation
(MON, ALARMS) TRANSMIT (Transmit Traffic Status)
Tx Traffic: No Tx Clock
from Terrestrial (ENT)
The screen will indicate if there are any Transmit Traffic Faults. If not, it will
display 'None'. Pressing ENTER takes the user back to the previous menu.
(MON, ALARMS) ODU (Outdoor Unit alarms)
ODU Alarms: BUC Current
Over Limit
The screen will indicate if there are any ODU Alarms. If not, it will display
'None'. Pressing ENTER takes the user back to the previous menu.
LISTING OF PRIORITIZED FAULTS:
Unit Faults:
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
st
7) Rx 1 LO synthesizer lock
nd
8) Rx 2 LO synthesizer lock
9) Reference PLL lock
10) IP Module fault
11) EEPROM checksum error
Tx Traffic status:
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
Rx Traffic status:
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) Eb/No alarm
8) AIS detected on incoming data (from satellite direction)
(ENT)
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Revision 4
MN/CDM570L.IOM