CDM-570A/570AL Satellite Modem with Optional Packet Processor
Revision 5
Front Panel Operation 6–43 MN-CDM570A
6.3.2.9 CONFIG: Msk (Alarm Masking)
CDM/R-570AL(L-Band) unit:
CDM-570A (70/140 MHz) unit:
Use the ◄ ► arrow keys to select Transmit, Receive, Ref, BUC (CDM/R-570ALonly), or LNB
(CDM/R-570ALonly). Press ENTER.
6.3.2.9.1 (CONFIG: Alarm Mask) Transmit
Tx Alarm Mask: Tx-FIFO
G703BPV TxAIS G703LOS ◄ ►
Use the
◄ ► arrow keys to select a parameter. Press ENTER.
Each choice displays a submenu similar to the TX-FIFO submenu:
Tx-FIFO Alarm:
Active Masked (◄ ►,ENT)
Typical for each Tx Alarm submenu, use the
◄ ► arrow keys to select Active or Masked. Press
ENTER.
When you select Masked, the modem generates no alarm. When you select Active, the modem
generates a fault. For example, for the preceding TX-FIFO Tx Alarm Mask, with the mask set to
Active the modem generates a Transmit Traffic fault whenever the transmitter sees that the
Transmit FIFO has slipped.
6.3.2.9.2 (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. Press ENTER. Each choice
displays a submenu similar to the AGC submenu:
AGC Alarm:
Active Masked (◄ ►,ENT)
Typical for each Rx Alarm submenu, use the
◄ ► arrow keys to select Active or Masked. Press
ENTER.
When you select Masked, the modem generates no alarm. When you select Active, the modem
generates a fault. For example, for the preceding AGC Alarm Mask, with the mask set to Active
the modem generates a Receive Traffic fault 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.
Alarm Mask: Transmit
Receive Ref (◄ ►)
Alarm Mask: Transmit
Receive Ref BUC LNB (◄ ►)
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