Specifications

SDM-300L3 Satellite Modem Revision 0

Front Panel Operation MN/SDM300L3.IOM

4–81

FUNCTION SELECT: UTILITY: MODULATOR:

ODU ALARM - HIGH

4000 mA

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

NORMAL

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 Operation

Normal Mode

Power (prime Power) The TX carrier is tuned Off when prime power is applied to the modem.

COMM The TX carrier is tuned Off if prime power is applied and remote port

communications is not detected after 10 seconds.

Carrier Detect (CD) The TX carrier is tuned Off when CD is not detected.

Notes:

1. For the RF ON Condition: the TX-IF shall be programmed On.

2. For RTS TX-IF, when enabled overrides CD.

This command allows for enabling or disabling of the TX carrier output depending on the

described conditions. One application for command is the operation of demand network

systems.