Comtech EF Data SDM-309B - Manual (Page 181)

Remote Control SDM-309B Satellite Modem
B-B–4 MN/U-SDM309B Rev. #
the standard ‘sMRx_" commands. Modems that have the variable rate option installed
will also respond to the special ‘sMRV_" command.
4.1.3.1 Modulator Filter Rate Assignment
Command: <add/AMRx_nnn_mmmm.m”cr” (x = A,B,C, or D Filter designator)
(nnn = 1/2,3/4, or 7/8 Coder rate)
(mmmm.m = 48.0 to 4080.0 (Data rate)
Response: >add/AMRx_nnn_mmmm.m”cr””lf”]
Status Only: <add/AMRx_”cr”
Response: >add/AMRx_nnn_mmmm.m”cr””lf”]
Note: The parameters nnn_mmmm.m may be replaced by N/A to indicate no assignment.
Example:
Command: <add/AMRx_N/A”cr”
Response: > add/AMRx_N/A”cr””lf”]
4.1.3.2 Select Modulator Rate
Command: <add/SMRx_”cr” (x = A,B,C, or D Filter designator)
Response: >add/SMRx_”cr”RF_OFF”cr””lf”]
Setting the modulator turns off the RF transmitter.
Status Only: see MR command.
Note: If the MODEM is commanded to a filter (rate) which is not assigned (N/A) the
error 2 message will be returned.
4.1.3.3 Select Modulator Rate Variable *Variable Rate Option Only*
Command: <add/SMRV_nnn_mmmm.m”cr” (nnn = 1/2,3/4, or 7/8 Coder rate)
(mmmm.m = 48.0 to 4080.0 Data rate)
Response: >add/SMRV_nnn_mmmm.m”cr””lf”] RF_OFF”cr””lf”]
*Setting the modulator turns off the RF transmitter.
Status Only: see MR command.