Comtech EF Data cdm-570a - Page 288

CDM-570A/570AL Satellite Modem with Optional Packet Processor
Revision 5
Serial-based Remote Product Management 8–22 MN-CDM570A
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 Descrambler
RDS=
1 byte,
value of 0, 1, or 2
Command or Query.
Sets or returns Rx Descrambler state in th form x, where:
0 = Off
1 = On (default descrambler type)
2 = On – IESS-315
Note: When CnC mode is ON, Rx Descrambler state is fixed as IESS-315.
Example: <0/RDS=1 (Scrambler On)
RDS=
RDS?
RDS*
RDS#
RDS?
RDS=x
(see Description of
Arguments)
Rx Demod
Acquisition Sweep
Width
RSW=
3 bytes
Command or Query.
Sets or returns Rx ± acquisition sweep range of demodulator in the form xxx,
where:
xxx = value, in kHz...
For CDM-570A – From ±1 to ±32 kHz (rates<625 ksym/second)
For CDM/R-570AL – From ±1 to ±200 kHz (rates ≥625 ksym/second)
Note: When the modem is in CNC mode (CNM>0) and Rx Symbol Rate<64ksps,
acquisition sweep range is limited from ±1 to ±(Rx_Symbol Rate / 2) kHz
Example: <0/RSW=009 (±9 kHz)
RSW=
RSW?
RSW*
RSW#
RSW?
RSW=xxx
(see Description of
Arguments)
Rx Alpha
RXA=
1 byte,
value of 0 or 1
Command or Query.
Valid only in CDM-570A Compatible Mode (CMO=1).
Sets or returns Rx Filter Rolloff Factor in the form x, where:
0 = 0.35
1 = 0.12
Example: <0/RXA=0 (0.35 Tx filter rolloff factor)
RXA=
RXA?
RXA#
RXA?
RXA=x
(see Description of
Arguments)