Comtech EF Data CDM-550T Manual page 125

CDM-550T Satellite Modem
Parameter Command
Type (InstructionC
ode and
qualifier)
Rx Spectrum RSI=
Invert
Rx RDS=
Descrambler
Rx Demod Acq RSW=
Sweep Width
Rx Clock Mode RCK=
Eb/No Alarm EBA=
Point
Rx Buffer Size RBS=
Rev. 1.3
Arguments for Description of arguments
Command or (note that all arguments are ASCII numeric codes, that is,
Response to ASCII codes between 48 and 57)
Query
1 byte, value of Command or Query.
0 or 1 Rx Spectrum Invert selection, where:
0 = Normal
1 = Rx Spectrum Inverted
All other codes invalid.
1 byte, value of Command or Query.
0 or 1 Rx De-scrambler state, where:
0 = Off
1 = On (V.35 in unframed mode, synchronous in framed mode
All other codes invalid.
Example: RDS=1 (which is de-scrambler On)
2 bytes, Command or Query.
numerical Rx ± acquisition sweep range of demodulator, in kHz, ranging
from ± 1 kHz to ± 30 kHz.
Example: RSW=09 (which is 9 kHz)
1 byte, value of Command or Query.
0 or 1 Rx Clock mode, where:
0 = Buffer disabled
1 = Buffer enabled
All other codes invalid.
Example: RCK=0 (which is buffer disable)
4 bytes, Command or Query.
numerical Eb/No alarm point, with a range of Eb/No between 0 and 16
dB. Resolution 0.1 dB.
Example: EBA=12.3 (which is Eb/No = 12.3 dB)
1 byte, value of Command or Query.
1,2,3,4 or 5 Rx buffer size, where:
1 = +/- 256 bits
2 = +/- 512 bits
3 = +/- 1024 bits
4 = +/- 2048 bits
5 = +/- 4096 bits
Response to Command Query
(target to controller) (Instruction
Code and
qualifier)
RSI= (message ok) RSI?
RSI? (received ok,
but invalid argument
found)
RSI* (message ok, but
not permitted in current
mode)
RDS= (message ok) RDS?
RDS? (received ok,
but invalid argument
found)
RDS* (message ok, but
not permitted in current
mode)
RSW= (message ok) RSW?
RSW? (received ok,
but invalid arguments
found)
RSW* (message ok, but
not permitted in current
mode)
RCK= (message ok) RCK?
RCK? (received ok,
but invalid argument
found)
RCK* (message ok, but
not permitted in current
mode)
EBA= (message ok) EBA?
EBA? (received ok,
but invalid arguments
found)
RBS= (message ok) RBS?
RBS? (received ok,
but invalid argument
found)
RBS* (message ok, but
not permitted in current
mode)
Remote Control
Response to query
(target to controller)
RSI=x
(same format as
command argument)
RDS=x
(same format as
command argument)
RSW=xx
(same format as
command arguments)
RCK=x
(same format as
command argument)
EBA=xx.x
(same format as
command arguments)
RBS=x
(same format as
command argument)
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