Comtech EF Data CDM-570 User Manual

Page 367

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CDM-570/570L Satellite Modem with Optional IP Module

Revision 12

Appendix D

MN/CDM570L.IOM

D–17

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

Rx Signal Level

N/A

4 bytes

Query Only.
Unit returns the value of the Rx signal level, in dBm, between –5 and –99 dBm, in
the form ccxx, where:
cc = code (GT=Greater Than; LT=Less Than, == is ‘equal to’)
xx = value (the ‘-‘ sign is implied)
Examples:
RSL=LT99 (Rx signal level is less than -99 dBm)
RSL===41 (Rx signal level is equal to -41 dBm)

N/A

RSL?

RSL=ccxx
(see description
of arguments)

Rx Symbol Rate

N/A

8 bytes

Query only.
Rx Symbol rate, in ksymbols/sec, between 4.8 ksps and 3.00 Msps Resolution = 1
sps.
Example: RSR=2047.999 (2047.999 ksymbols/sec)

N/A

RSR?

RSR=xxxx.xxx
(see Description of
Arguments)

Rx Demod
Acquisition Sweep
Width

RSW=

3 bytes

Command or Query.
Rx

± acquisition sweep range of demodulator, in kHz, ranging from ± 1 to

± 32 kHz (rates < 625 ksym/second) or
± 1 to ± 200 kHz (rates >= 625 ksym/second) CDM-570L only
Example: RSW=009 (selects

± 9 kHz)

RSW=
RSW?
RSW*
RSW#

RSW?

RSW=xxx
(see Description of
Arguments)

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