Comtech EF Data CDM-710 Installation And Operation Manual page 221

CDM-710 Broadcast Satellite Modem
Appendix A
Command Arguments for
Parameter (Instruction Command or
Type Code and Response to
Qualifier) Query
Rx Clock
RCK= 2 bytes
Source
Rx Data Invert
RDI= 2 bytes
Rx Data Rate
N/A 10 bytes
Redundancy
RED= 1 byte
State
Rx Frequency
N/A 5 bytes
Offset
Description of Arguments
Command or Query.
Rx Clock Source (for data rate accuracy) in the form sx, where:
s=Defines which interface slot ( 1 or 2 )
x=Rx Clock Source, where:
0=Rx Satellite
1=Tx-Terrestrial
2=External Reference Clock
3=Internal (HSSI Only)
Example: RCK=11 (Tx-Terrestrial selected)
Command or Query.
Invert Receive Data in the form sx, where:
s=Defines which interface slot ( 1 or 2 )
x=Invert Receive Data, where:
0=Normal
1=Inverted
Note: Command valid Only with HSSI.
Example: RDI = 11 (Inverted RX Data selected)
Query only.
Composite Rx Data rate, in kbps, in the form xxxxxx.xxx.
Resolution=1 bps.
Example: RDR=002047.999 (2047.999 kbps specified)
Command or Query.
Unit returns the redundancy state of the unit in the form x, where:
0 = Offline
1 = Online
Notes:
1. This command can be used to force the unit offline, this is done by sending
RED=0. This is only valid if redundancy mode is enabled – if redundancy is not
enabled, then RED=0 will return an error. The unit cannot be forced online.
2. If the unit is not in redundancy mode, then the unit will always be online.
Example: RED=0 (force unit offline)
Query only.
Unit returns the value of the measured frequency offset of the carrier being
demodulated in the form sxxx.x. Values range from ± 0 to ± 100 kHz, 100 Hz
resolution.
Returns 999999 if the demodulator is unlocked.
Example: RFO=+002.3 (which is + 2.3 kHz)
A–47
MN/CDM710.IOM
Query
Response to (Instruction
Response to Query
Command Code and
Qualifier)
RCK= RCK?s RCK=sx
RCK? (See Description of
RCK* Arguments)
RCK#
RDI = RDI?sc RDI =sx
RDI? (See Description of
RDI* Arguments)
RDI#
RDR? RDR? RDR=xxxxxx.xxx
RDR*
RDR#
RED= RED? RED=x
RED? (See Description of
RED* Arguments)
RED#
RFO? RFO? RFO=sxxx.x
RFO*
RFO#
Revision 11