Comtech EF Data CDM-840 - Manual (Page 159)

CDM-840 Remote Router Revision 2
Serial-based Remote Product Management MN-CDM840
7–13
7.3.3 Receive (Rx) Parameters Commands and Queries
Parameter
Type
Command
(Instruction
Code
& Qualifier)
Number of
Arguments for
Command or
Response to Query
Description of Arguments
(Note that all arguments are ASCII numeric codes from 48 and 57)
Response to
Command
(Target to
Controller)
Query
(Instruction
Code &
Qualifier)
Response to Query
(Target to Controller)
Rx
Frequency
RFQ= 10bytes Command or Query.
Sets or returns Rx Terminal Frequency (the frequency (MHz) being received
from the satellite) in the form xxxxx.xxxx, where:
xxxxx.xxxx = 950.0000 MHz to 65000.0000 MHz (L-Band)
Resolution=100Hz.
Examples:
• If RX LO is 00000, then the Rx Frequency is entered as L-Band direct –
950.0000 to 2150.0000;
• If RX LO is set in the range of 30000 to 65000, the Rx Frequency is ± the
Rx LO, and this will be the resulting L-Band frequency the modem will
expect to receive.
RFQ=
RFQ?
RFQ*
RFQ#
RFQ? RFQ=xxxxx.xxxx
(see Description of
Arguments)
Rx Symbol
Rate
RSR= 10 bytes Command or Query.
Sets or returns Rx Symbol Rate in the form dddddd.ddd, where:
dddddd.ddd = Tx Symbol Rate in ksps, from 16ksps to 4.5Msps
Example: <1/RSR =002047.999’cr’
RSR =
RSR?
RSR *
RSR #
RSR? RSR =dddddd.ddd
(see Description of
Arguments)
Rx
MODCOD
N/A 2 bytes Query only.
Returns Rx Demodulationall in the form xx, where:
0=reserved
1=QPSK 1/4
2=QPSK 1/3
3=QPSK 2/5
4=QPSK 1/2
5=QPSK 3/5
6=QPSK 2/3
7=QPSK ¾
8=QPSK 4/5
9=QPSK 5/6
10=QPSK 8/9
11=QPSK 9/10
12=8PSK 3/5
13=8PSK 2/3
14=8PSK 3/4
15=8PSK 5/6
16=8PSK 8/9
17=8PSK 9/10
RMC?
RMC*
RMC#
RMC? RMC=xx
(see Description of
Arguments)