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SDM-300L3 Satellite Modem
Front Panel Operation
FUNCTION SELECT: UTILITY: MODULATOR:
ODU ALARM - LOW
Sets ODU Alarm – Low within 0 to 4000 mA, in 1 mA steps. An alarm is produced
whenever the ODU or BUC current falls below the programmed limit.
FUNCTION SELECT: UTILITY: MODULATOR:
ODU ALARM - HIGH
Sets ODU Alarm – High within 0 to 4000 mA, in 1 mA steps. An alarm is produced
whenever the ODU/BUC current exceeds the programmed limit. The low limit shall be less
than the high limit.
FUNCTION SELECT: UTILITY: MODULATOR:
RF MODE CONTROL
This menu control several operational variations of the Transmitted (TX) L-Band. This
menu allows Front Panel selection of the RF Mode setting that was previously available
from the remote port using RS-232/485 communications.
Selection
Normal Mode
Power (prime Power)
COMM
Carrier Detect (CD)
ODU ALARM - LOW
0 MA
ODU ALARM - HIGH
4000 mA
RF MODE CONTROL
NORMAL
Operation
The TX carrier is tuned Off when prime power is applied to the modem.
The TX carrier is tuned Off if prime power is applied and remote port
communications is not detected after 10 seconds.
The TX carrier is tuned Off when CD is not detected.
4–91
Revision 1
MN/SDM300L3.IOM
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