Comtech EF Data CDM-600 Operating Instructions Manual page 193

CDM-600 Satellite Modem
Remote Control
Command
Arguments for
Parameter
(Instruction Command or
Code and Response to
Type
Query
Qualifier)
Initialize IEP= None
Events
Pointer
Rx Eb/No N/A 4 bytes
Rx Signal N/A 5 bytes
Level
Rx Frequency N/A 5 bytes
Offset
Buffer Fill N/A 2 bytes
State
Description of Arguments
Command only.
Resets internal pointer to allow RNE? queries to start at
the beginning of the stored events log.
Query only.
Unit returns the value of Eb/No, between 0 to 16 dB.
Resolution 0.1 dB.
Returns 99.9 if demod is unlocked.
Returns +016 for values greater than 16.0 dB.
Example EBN=12.3 (which is Eb/No = 12.3 dB)
Query Only.
Unit returns the value of the Rx signal level, in dBm,
between –20 and –60 dBm.
If >-20dBm, returns RSL=GT-20
than')
If in the range of –20 to –60dBm, returns RSL===-xx
If <-60 dBm, returns RSL=LT-60
than')
Example: RSL=== -45 (which is –45 dBm)
Query only.
Unit returns the value of the measured frequency offset
of the carrier being demodulated.
Values range from ± 0 to ± 30 kHz, 100 Hz resolution.
Returns 99999 if the demodulator is unlocked.
Example: RFO=+02.3 (which is + 2.3 kHz)
Query only.
Unit returns the value of the buffer fill state, between 1
and 99%. Returns 00 if demodulator is unlocked.
Example: BFS=33 (which is 33%)
16–31
Response
to
Command
IEP=
IEP#
N/A
N/A
(GT means 'greater
(LT means 'less
N/A
N/A
Revision 7
MN/CDM600.IOM
Query
(Instruction
Response to Query
Code and
Qualifier)
N/A N/A
EBN? EBN=xxxx
(see description of
arguments)
RSL? RSL=xxxxx
(see description
of arguments)
RFO? RFO=xxxxx
(see description
of arguments)
BFS? BFS=xx
(see description
of arguments)