Comtech EF Data CDM-600/600L - Manual (Page 105)

CDM-600/600L Open Network Satellite Modem Revision 3
Front Panel Operation MN/CDM600L.IOM
5–29
If Active is selected for AGC, then an AGC fault will be generated whenever the receive signal
level exceeds –20 dBm (for the desired carrier). If Masked is selected, no alarm will be
generated.
If Active is selected for EbNo, then an Eb/No fault will be generated whenever the demodulator
sees the receive Eb/No fall below the pre-determined value. If Masked, no alarm will be
generated.
5.4.11.4 CONFIG: MASK
Æ SAT-ALM (Satellite Alarms)
SATELLITE ALARMS
TRANSMIT RECEIVE
Select TRANSMIT or RECEIVE using the [ ←][→] arrow keys, then press [ENT].
CONFIG: MASK Æ SAT-ALM Æ TRANSMIT
PROCESS ALARMS FROM (H/W, S/W, OFF)
BWA1=OFF BWA2=OFF BWA3=S/W BWA4=H/W
To determine how the Tx IDR backward alarm inputs are to be used, an activated alarm may
respond to a hardware input at P5A (H/W) or be software controlled by a receive fault on the
modem (S/W).
Select the Backward Alarm to be edited (BWA1, BWA2, BWA3, or BWA4) using the [ ←][→]
arrow keys, then select the setting for that alarm – Off, H/W, or S/W – using the [ ↑] [↓] arrow
keys. Press [ENT] when done.
CONFIG: MASK
Æ SAT-ALM Æ RECEIVE
PROCESS ALARMS RECEIVED FROM SATELLITE
BWA1=N, BWA2=N, BWA3=N, BWA4=N
Select which Receive IDR backward alarms are to be monitored (BWA1, BWA2, BWA3, or
BWA4) using the [
←][→] arrow keys, then select the setting for that alarm – Yes or No – using
the [ ↑][↓] arrow keys. Press [ENT] when done.
5.4.11.5 CONFIG: MASK
Æ TERR-ALM
TERR-ALM: TX = ACTIVE (ACTIVE,MASK)
RX = OFF (OFF,ENABLED)
Note: These alarms are applicable for D&I operation only.
Use the [ ←][→] arrow keys to select Tx or Rx, then select the alarms for either as Active or
Masked using the [
↑][↓] arrow keys. Press [ENT] when done.