Comtech EF Data SNM-1000 - Manual (Page 53)

SNM-1000 Node Control Modem Revision 3
Operation MN/SNM1000.IOM
3–11
3.4.1.2.7 DEMODULATOR:BER THRESHOLD
BER THRESHOLD
NONE
Displays the BER threshold .
If the BER threshold set is exceeded, a receive fault will be indicated by the modem
status indicators. BER threshold may be set from 1.0 E-3 to 1.0 E-8, or may be disabled
by specifying NONE.
3.4.1.2.8 DEMODULATOR:SWEEP CENTER
SWEEP CENTER
+ 0 HZ
Displays the sweep center frequency for the directed sweep function. When in directed
sweep, the value from the sweep monitor screen (when the modem was last locked)
should be entered for the sweep center frequency. The sweep center frequency can be set
in the range from –35000 to +35000 Hz. Default: 0 Hz.
Upon entry, the current sweep center frequency is displayed with the flashing cursor on
the first character. Press [
← ] or [→] to move the flashing cursor, and [↑ ] or [↓ ] to
increase or decrease the digit at the flashing cursor. Press to execute the
change.
3.4.1.2.9 DEMODULATOR:SWEEP RANGE
SWEEP RANGE
30000 HZ
Displays the overall travel of the sweep width range during acquisition in the directed
sweep mode. The sweep width may be set from 0 to 70000 Hz. Default: 30000 Hz.
When set at 70000 Hz, the modem is in Normal acquisition mode. The smaller the range,
the faster the modem will lock, provided the receive carrier center frequency is within the
RX-IF frequency sweep range.