beautypg.com

Configuration commands/responses, Modulator – Comtech EF Data SNM-1002 User Manual

Page 130

background image

SNM-1002 LinkSync

 Modem

Revision 2

Remote Control Operation

MN/SNM1002.OM

A–4

A.3 Configuration

Commands/Responses

A.3.1 Modulator

Modulator
Frequency

Command:
Response:


Status:
Response:

>add/MF_nnn.nnnnnn'cr'
RF_OFF'cr''lf']

>add/MF_nnn.nnnnnn'cr''lf']

Where: nnn.nnnn = Frequency in MHz,
50.000000 to 180.000000 in 1 Hz steps.

Note: When the modulator frequency is
programmed, the RF output is switched off.

RF Output (IF
Output)

Command:
Response:

Status:
Response:

>add/RF_xxx'cr''lf']

>add/RF_xxx'cr''lf']

Where: xxx = ON or OFF.

Modulator
Rate Preset
Assignment

Command:
Response:

Status:
Response:

>add/AMRx_nnnn_mmmm.mmm'cr''lf']

>add/AMRx_nnnn_mmmm.mmm'cr''lf']

Where:

x = A, B, C, D, or V [preset designator].

nnnn = 1/2 (QPSK 1/2), [coder rate], 3/4
(QPSK 3/4), 7/8 (QPSK 7/8), BP12 (BPSK
1/2), 8P23 (8PSK 2/3).

mmmm.mmm = Data rate in kHz.

Modulator
Rate Preset
Selection

Command:
Response:


Status:

>add/SMRx_'cr'
RF_OFF'cr''lf']

See MR command.

Where: x = A, B, C, D, or V (preset
designator).

Note: Setting the modulator rate turns off the
RF transmitter.

Modulator
Rate Variable
Assignment &
Selection

Command:
Response:


Status:

>add/SMRV_nnnn_mmmm.mmm'cr'
RF_OFF'cr''lf']

See MR command.

Where:

nnnn = 1/2 (QPSK 1/2), [coder rate], 3/4
(QPSK 3/4), 7/8 (QPSK 7/8), BP12 (BPSK
1/2), 8P23 (8PSK 2/3).

mmmm.mmm = Data rate in kHz.

Note: Setting the modulator turns off the RF
transmitter.

Set Modulator
Power Offset

Command:
Response:

Status:
Response:

>add/MPO_snn.n'cr''lf']

>add/MPO_snn.n'cr''lf']

Where: snn.n = +99.0 to -99.0, in 0.1 dB
increments.

Note: The modulator power offset is added to
the nominal power level to adjust the transmit
power range.