Comtech EF Data CDM-750 Installation And Operation Manual page 189

CDM-750 Advanced High-Speed Trunking Modem
Serial-based Remote Product Management
Command
Parameter Number of
(Instruction
Type Arguments
& Qualifier)
Tx TSR= 10 bytes,
Symbol Rate numeric
Tx Data Rate TDR= 10 bytes
Tx Spectrum TSI= 1 byte, valuwe
Invert of 0 or 1
Tx Alpha TAR= 1 byte, value
Rolloff of 0 thru 2
Tx Gold Code TGS= 6 bytes
Sequence
Index
Description of Arguments
Command or Query.
Set or return Tx Symbol Rate, in Ksps, in the form dddddd.ddd where the valid range is:
QPSK/8PSK: 1000 to 63000Ksps
16APSK: 1000 to 47000Ksps
32APSK: 1000 to 38000Ksps
* All 9/10 MODCODs are not valid in Short Block operation
NOTE: If the Symbol Rate is set, then the Data Rate rate will be automatically calculated and updated.
Command or Query.
Set or return Tx Data rate in Ksps, Resolution=1 bps in the form xxxxxx.xxx.
NOTE: If the Data Rate is set, then the Symbol Rate will be automatically calculated and updated. The symbol
rate will be limit checked to assure valid ranges.
The Data Rate can only be changed in Non-MultiStream Mode and only with the Ethernet interface selected.
Example: TDR=002047.999 (2047.999 kbps)
Command or Query.
Set or return Tx Spectrum Invert in the form x, where:
0 = Normal
1 = Tx Spectrum Inverted
Example: TSI=0 (selects Normal)
Command or Query.
Set or return Tx Alpha Rolloff, where:
0 = 20%
1 = 25%
2 = 35%
Example: TAR=0 (selects a Tx Alpha Rolloff of 20%)
Command or Query.
Set or return Tx Gold Code Sequence Index in the form xxxxxx, where:
Gold Code Sequence index = 000000 to 262141
Example: TGS=189063
7–11
Revision 2
MN-CDM750
Query
Response to
(Instruction & Response to Query
Command
Qualifier)
TSR? TSR? TSR=xxxxxx.xxx
TSR= (see Description of
TSR* Arguments)
TSR#
TDR= TDR? TDR=xxxxxx.xxx
TDR? (see Description of
TDR* Arguments)
TDR#
TSI= TSI? TSI=x
TSI? (see Description of
TSI* Arguments)
TSI#
TAR= TAR? TAR=x
TAR?
TAR*
TAR#
TGS= TGS? TGS=xxxxxx
TGS?
TGS*
TGS#