Comtech EF Data CDM-625A, Installation And Operation Manual

Page: 337 / 756

CDM-625A Advanced Satellite Modem MN-CDM625A
Serial-based Remote Product Management Revision 4
8–23
Parameter
Command
(Instruction
& Qualifier)
Length of
Argument
Description of Arguments
Response to
Command
Query
(Instruction &
Qualifier)
Response to Query
Rx Sub-Mux
Ratio
RMR= 2 bytes, numeric Command or Query.
Sets or returns Rx Sub-Mux Ratio (IP/Synchronous Interface) in the form xx, where:
RMR?
RMR=
RMR*
RMR#
RMR? RMR=xx
(see Description of
Arguments)
00=1/9
01=1/8
02=1/7
03=1/6
04=1/5
05=1/4
06=2/7
07=1/3
08=2/5
09=3/7
10=1/2
11=3/5
12=2/3
13=3/4
14=4/5
15=1/1
16=5/4
17=4/3
18=3/2
19=5/3
20=2/1
21=7/3
22=5/2
23=3/1
24=7/2
25=4/1
26=5/1
27=6/1
28=7/1
29=8/1
30=9/1
31=1/59
32=1/39
33=1/19
EXAMPLE: <0/RMR=01 (Selects ratio 1/8)
Rx Reed-
Solomon
Decoding
RRS= 1 byte, 0 thru 3 Command or Query.
Sets or returns Rx RS decoding in the form x, where:
0=Normal (based on the Open Network framing selected)
1=IESS-310 mode, valid with QDI, unframed, IBS, D&I, IDR.
2=EF Data legacy standard (225,205) – unframed, QDI only
3=IBS (126,112) – unframed only
NOTE: Available in all framing modes except EDMAC (this is a ‘don’t care’ if no R-S is selected in FEC type)
EXAMPLE: <0/RRS=0 (selects Normal)
RRS=
RRS?
RRS*
RRS#
RRS? RRS=x
(see Description of
Arguments)
Rx Spectrum
Invert
RSI= 1 byte, 0 or 1 Command or Query.
Sets or returns Rx Spectrum Invert in the form x, where:
0=Normal
1=Rx Spectrum Invert
EXAMPLE: <0/RSI=0 (selects Normal)
RSI=
RSI?
RSI*
RSI#
RSI? RSI=x
(see Description of
Arguments)
Rx Descrambler RDS= 1 byte, 0 or 1 Command or Query.
Sets or returns Rx Descrambler state in the form x, where:
0=Off
1=Normal
2=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
Exception –
600L Emulation:
2 bytes
Command or Query.
Sets or returns Rx ± Acquisition Sweep Range of demodulator, in kHz.
Available range depends on the symbol rate:
RSW=
RSW?
RSW*
RSW#
RSW? RSW=xxx
(see Description of
Arguments)
18 ksps to 64 ksps:
64 ksps to 389 ksps:
389 ksps to 3000 ksps:
>3000 ksps:

1 to the symbol rate (ksps)/2

1 to the symbol rate (ksps)/2

1 to the symbol rate (ksps)/2

1 to the symbol rate (ksps)/2
EXAMPLE: <0/RSW=009 (selects
±
9 kHz)