Comtech EF Data SNM-1001L - Manual (Page 84)

SNM-1001L Satellite Modem Revision 1
Front Panel Operation MN/SNM1001L.IOM
4–20
FUNCTION SELECT:CONFIGURATION:DEMODULATOR:
DESCRAMBLER
DESCRAMBLER
ON
Programs the descrambler On or Off.
Upon entry, the current status of the descrambler is displayed. Press [
↑] or [↓] to make the
selection. Press <ENTER> to execute the change.
FUNCTION SELECT:CONFIGURATION:DEMODULATOR:
DIFF. DECODER
DIFF. DECODER
ON
Programs the differential decoder On or Off.
Upon entry, the current status of the differential decoder is displayed. Press [
↑] or [↓] to make the
selection. Press <ENTER> to execute the change.
FUNCTION SELECT: CONFIGURATION: DEMODULATOR:
RF LOOP BACK
RF LOOP BACK
OFF
IMPORTANT
This is a Test Mode.
Programs the modem for RF loopback operation. When RF loopback is turned on, the
demodulator is programmed to the same frequency as the modulator. When RF loopback is turned
off, the demodulator is tuned to the previous frequency. Refer to (Figure 4-4) for a block diagram
of RF loopback operation.