Spectrum Analyzer Commands And Queries - Rx Module Only - Comtech EF Data CDM-Qx Installation And Operation Manual

CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier®
Appendix C
C.6.9 Spectrum Analyzer Commands and Queries – Rx Module ONLY
Command Arguments for
Parameter (Instruction Command or
Type Code and Response to
Qualifier)
Spectrum SPF= 9 bytes
Analyzer
Center
Frequency
Spectrum SPM= 1 byte
Analyzer
Mode
Spectrum SPS= 1 byte
Analyzer
Span
Description of Arguments
Query
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
Command or Query.
Sets mode in the form x, where:
0=Off
1=On
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
Response to
Command
SPF=
SPF?
SPF*
SPF#
SPF$
SPF^
SPF@
SPM=
SPM?
SPM*
SPM#
SPM$
SPM^
SPM@
SPS=
SPS?
SPS*
SPS#
SPS$
SPS^
SPS@
C–39
Revision 7
MN/CDMQX.IOM
Query
(Instruction
Response to Query
Code and
Qualifier)
SPF? SPF=xxxx.xxxx
(see Description of
Arguments)
SPM? SPM=x
(see Description of
Arguments)
SPS? SPS=x
(see Description of
Arguments)