Mocomtech CDM-QX User Manual

Page 257

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CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision

7

Appendix C

MN/CDMQX.IOM

C–39

C.6.9 Spectrum Analyzer Commands and Queries – Rx Module ONLY

Parameter

Type

Command

(Instruction

Code and

Qualifier)

Arguments for

Command or

Response to

Query

Description of Arguments

Response to

Command

Query

(Instruction

Code and

Qualifier)

Response to Query

Spectrum
Analyzer
Center
Frequency

SPF=

9 bytes

Command or Query.

Tx Frequency in the form xxxx.xxxx, where:

0950.0000 to 1950.0000 MHz (for L-Band units) or
0500.0000 to 0090.0000 and 0100.0000 to 0180.0000 MHz (for
70/140 MHz units)

Resolution=100 Hz

Example: SPF=0050.9872

SPF=
SPF?
SPF*
SPF#
SPF$
SPF^
SPF@

SPF? SPF=xxxx.xxxx

(see Description of
Arguments)

Spectrum
Analyzer
Mode

SPM=

1 byte

Command or Query.

Sets mode in the form x, where:

0=Off
1=On

SPM=
SPM?
SPM*
SPM#
SPM$
SPM^
SPM@

SPM? SPM=x

(see Description of
Arguments)

Spectrum
Analyzer
Span

SPS=

1 byte

Command or Query.

Sets span in the form x, where:

0 = 97.65625 kHz
1 = 195.3125 kHz
2 = 390.625 kHz
3 = 781.25 kHz
4 = 1.5625 MHz
5 = 3.125 MHz
6 = 6.25 MHz
7 = 12.5 MHz

SPS=
SPS?
SPS*
SPS#
SPS$
SPS^
SPS@

SPS? SPS=x

(see Description of
Arguments)

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