Comtech EF Data SLM-5650 Installation And Operation Manual page 145

SLM-5650 Satellite Modem
Remote Control
Command Arguments
Parameter (Instruction for Command
Type Code and or Response
Qualifier)
Eb/No Alarm EBA= 4 bytes
Point
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
Rx BER N/A 5 bytes
Description of Arguments
to Query
Command or Query.
Eb/No alarm point in dB, with a range between 0.1 and 20 dB.
Resolution=0.1 dB
Example: EBA=12.3
Query only.
Unit returns the value of Eb/No, between 0 and 20 dB,
resolution 0.1 dB.
Returns 99.9 if demod is unlocked.
Example EBN=12.3 (which is Eb/No = 12.3 dB)
For values greater than 20.0 dB, the reply will be: EBN=+020
Query Only.
Unit returns the value of the Rx signal level, in dBm, between +10.0
and –60.0 dBm, in the form: sxx.x
Examples:
RSL=+10.0
RSL=-60.0
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.
xx = value of the buffer fill state, between 1 to 99%. Returns 00 if
demodulator is unlocked.
Example: BFS=33 (which is 33%)
Query only.
Unit returns the value of the estimated corrected BER in the form
-c
a.b x 10 . First three bytes are the value. Last two bytes are the
exponent. Returns 99999 if the demodulator is unlocked.
Example: BER=4.8E3 (which is BER = 4.8 x 10
Response to
Command
EBA=
EBA?
EBA*
EBA#
N/A
N/A
N/A
N/A
N/A
-3
)
B–23
Revision 1
MN/SLM5650.IOM
Query
(Instruction
Response to Query
Code and
Qualifier)
EBA? EBA=xx.x
(see description of
arguments)
EBN? EBN=xxxx
(see description of
arguments)
RSL? RSL=sxx.x
(see description
of arguments)
RFO? RFO=xxxxx
(see description
of arguments)
BFS? BFS=xx
(see description
of arguments)
BER? BER=a.bEc
(see description
of arguments)