Comtech EF Data CDM-570A Installation And Operation Manual page 265

CDM-570A/570AL Satellite Modem with Optional Packet Processor
Serial-based Remote Product Management
Command
Parameter (Instruction
Type Code and
Qualifier)
Rx Demod RSW= 3 bytes
Acquisition Sweep
Width
Rx Alpha RXA= 1 byte,value of 0 or
1
Rx Buffer Size RBS= 1 byte,
value of 0 thru 9
ReCenter Buffer RCB= None
Arguments for
Command or
Response to
Query
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)
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)
Command or Query.
Sets or returns Rx buffer size in the form x, where:
0 = Buffer disabled (Clock mode = Rx satellite)
1 = ±1024 bits
2 = ±2048 bits
3 = ±4096 bits
4 = ±8192 bits
5 = ±16384 bits
6 = ±32768 bits
7 = ±128 bits
8 = ±256 bits
9 = ±512 bits
Example: <0/RBS=0
Command only.
Forces the software to recenter the receive Plesiochronous/Doppler buffer.
This command takes no arguments.
Example: <0/RCB=
Description of Arguments
8–21
MN-CDM570A
Revision 3
Query
Response to
(Instruction Code
Command
and Qualifier)
RSW= RSW? RSW=xxx
RSW? (see Description of
RSW* Arguments)
RSW#
RXA= RXA? RXA=x
RXA? (see Description of
RXA# Arguments)
RBS= RBS? RBS=x
RBS? (same format as
RBS* command
RBS# argument)
RCB= N/A N/A
RCB?
RCB*
RCB#
Response to
Query