Comtech EF Data CDM-570 - Manual (Page 118)

CDM-570/570L Satellite Modem with Optional IP Module Revision 12
Front Panel Operation MN/CDM570L.IOM
5–32
For the TX-FIFO Tx Alarm Mask submenu example: When Active is selected, a Transmit Traffic
fault is generated whenever the transmitter sees that the transmit FIFO has slipped.
When Masked is selected, no alarm is generated.
Similarly, the G.703 BPV, TxAIS, and G703LOS Tx Alarm Masks may be set as Active or
Masked.
5.2.2.1.9.2 (CONFIG: Alarm Mask) Receive
Rx Alarm Mask: AGC Eb/No
Rx-AIS Buffer (◄ ►,ENT)
Use the ◄ ► arrow keys to select AGC, E
b
/N
0
, Rx-AIS, or Buffer, and then press ENTER.
Each choice displays a submenu similar to the AGC submenu:
AGC Alarm:
Active Masked (◄ ►,ENT)
Use the ◄ ► arrow keys to select Active or Masked, and then press ENTER.
For the AGC Rx Alarm Mask submenu example: When Active is selected, a Receive Traffic fault
is generated whenever the demodulator sees that the composite input level being applied causes
compression in the IF stages, and consequently degrades the performance of the demodulator.
When Masked is selected, no alarm is generated.
Similarly, the E
b
/N
0
, Rx-AIS, or Buffer Rx Alarm Masks may be set as Active or Masked.
5.2.2.1.9.3 (CONFIG: Alarm Mask) Ref
Reference Alarm:
Active Masked (◄ ►,ENT)
Use the ◄ ► arrow keys to select Active or Masked, and then press ENTER.
When Active is selected, a Transmit Traffic fault is generated whenever the modem sees that:
a) External Reference is selected, and
b) There is no signal activity at the External Reference port.
When Masked is selected, no alarm is generated.