Product specifications

CDM-710 Broadcast Satellite Modem Revision 11
Appendix A MN/CDM710.IOM
A–47
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 Cloc
k
Source
RCK= 2 bytes 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)
RCK=
RCK?
RCK*
RCK#
RCK?s RCK=sx
(See Description of
Arguments)
Rx Data Invert
RDI= 2 bytes 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)
RDI =
RDI?
RDI*
RDI#
RDI?sc RDI =sx
(See Description of
Arguments)
Rx Data Rate
N/A 10 bytes Query only.
Composite Rx Data rate, in kbps, in the form xxxxxx.xxx.
Resolution=1 bps.
Example: RDR=002047.999 (2047.999 kbps specified)
RDR?
RDR*
RDR#
RDR? RDR=xxxxxx.xxx
Redundancy
State
RED= 1 byte 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)
RED=
RED?
RED*
RED#
RED? RED=x
(See Description of
Arguments)
Rx Frequency
Offset
N/A 5 bytes 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)
RFO?
RFO*
RFO#
RFO? RFO=sxxx.x