Comtech EF Data CDM-570A - Manual (Page 261)

CDM-570A/570AL Satellite Modem with Optional Packet Processor MN-CDM570A
Serial-based Remote Product Management Revision 2
8–21
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 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)
Rx Buffer Size RBS= 1 byte,
value of 0 thru 9
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
RBS=
RBS?
RBS*
RBS#
RBS? RBS=x
(same format as
command
argument)
ReCenter Buffer RCB= None Command only.
Forces the software to recenter the receive Plesiochronous/Doppler buffer.
This command takes no arguments.
Example: <0/RCB=
RCB=
RCB?
RCB*
RCB#
N/A N/A