Comtech EF Data CDM-600/600L - Manual (Page 209)

CDM-600/600L Open Network Satellite Modem Revision 3
Appendix D MN/CDM600L.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 Eb/No N/A 4 bytes 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 (Eb/No = 12.3 dB)
N/A EBN? EBN=xxxx
(see Description of
Arguments)
Invert Rx
Data IRD= 1 byte, value 0
or 1 Command or Query.
Invert Rx Data, where:
0=Normal
1=Inverted
Example: IRD = 1 (selects Inverted RX Data)
IRD=
IRD?
IRD*
IRD# IRD? IRD=x
(see Description of
Arguments)
Insert
Timeslot ITS= 3 bytes Command or Query.
(Insert mode parameter)
(Note: Command and query have different formats)
Command is in the form xy, where:
xx = Channel 01 through 24
y = timeslot: 0-9, A=10, B=11, C=12, D=13 … V=31
ITS=
ITS?
ITS*
ITS# ITS? ITS=yyyyyyyyyyyyyyyyyy
yyyyyy
indicating all 24 Insert
timeslot values
associated with the 24 Rx
Satellite channels.
Insert Type ITY= 1 byte, value of
0 thru 3 Command or Query.
(Insert/D&I++ parameter)
Insert Type, where:
0=T1 – D4
1=T1 – ESF
2=E1 – CCS
3=E1 – CAS ITY=
ITY?
ITY*
ITY# ITY? ITY=x
(see Description of
Arguments)
Rx Backward
Alarms
Enable RBA= 4 bytes, each a
value of 0 or 1 Command or Query.
(IDR Parameter)
Rx Backward Alarm enable:
0=Disable
1=External trigger Enable
Position indicates backward alarm numbers: 1234
Example: RBA=0101
RBA=
RBA?
RBA*
RBA# RBA? RBA=xxxx
(see Description of
Arguments)
Rx Buffer
Size RBS= 5 bytes Command or Query.
Rx Buffer Size, 16 to 32768 bytes, in 2-byte steps, unless other
limitations apply (see Sect. 5.4.5 CONFIG: CLOCKS).
Example: RBS=08192 (selects 8192 bytes)
RBS=
RBS?
RBS*
RBS# RBS? RBS=xxxxx
(see Description of
Arguments)
Rx Clock
Source RCK= 1 byte, value of
0 thru 3 Command or Query.
Rx Clock Source (for data rate accuracy), where:
0=Rx Satellite
1=Tx-Terrestrial
2=External Clock
3=INSERT (Valid as a command only when Rx framing is Insert or
D&I++ and the interface is G.703 or set for D&I loop)
Example: RCK=1 (selects Tx-Terrestrial)
RCK=
RCK?
RCK*
RCK# RCK? RCK=x
(see Description of
Arguments)