Comtech EF Data CDM-625 - Manual (Page 489)

CDM-625 Advanced Satellite Modem Revision 15
Appendix D MN-CDM625
D–25
Parameter
Type
Command
(Instruction
& Qualifier)
Number of
Arguments
Description of Arguments
Response to
Command
Query
(Instruction &
Qualifier)
Response to
Query
Rx Ternary
Code
RTC= 1 byte, value
of 0 thru 3
Command or Query. (G.703 parameter)
Rx Ternary Code in the form x, where:
0=AMI
1=B8ZS
2=B6ZS
3=HDB3
Example: RTC=1 (selects B8ZS)
RTC=
RTC?
RTC*
RTC#
RTC? RTC=x
(see Description of
Arguments)
Receive
Backward
Alarms
Enable
RBA= 4 bytes, each
a value of 0 or
1
Command or Query. (IDR parameter)
Enable Receive backward alarm enable in the form xxxx, where:
0=Disable
1=External trigger Enable
Example: RBA=0101
RBA=
RBA?
RBA*
RBA#
RBA? RBA=xxxx
(see Description of
Arguments)
Receive ESC
Type
RET= 1 byte, 0 or 1 Command or Query. (IDR parameter)
Sets or queries IDR ESC Type in the form x, where:
0=64k data channel
1=2 Audio channels
RET=
RET?
RET*
RET#
RET? RET=x
(see Description of
Arguments)
Insert
Timeslot
ITS= 3 bytes Command or Query. (D&I/D&I++ only)
(Note different format between command and query.)
Insert Timeslot in the form xxy, where:
xx = Channel 01 through 24
y = timeslot: 0-9, A=10, B=11, C=12, D=13,…V=31
ITS=
ITS?
ITS*
ITS#
ITS? ITS=yyyyyyyyyyyyy
yyyyyyyyyyy
indicating all 24 Insert
timeslots values
associated with the 24
Rx Satellite channels.
ReCenter
Buffer
RCB= None Command only.
Forces the software to recenter the receive Plesiochronous/Doppler buffer.
Note: This command takes no arguments.
Example: RCB=
RCB=
RCB?
RCB*
RCB#
N/A N/A
RX LO
Frequency
RLO= 6 bytes Command or Query.
LNB Rx LO frequency information in the form xxxxxs, where:
xxxxx is the LO frequency: 03000 through 65000 MHz, or 00000=Off
s is the sign for the MIX (Note: negative mix induces a spectral inversion)
Note: For additional information refer to Chapter 5 for LO, MIX, and Spectrum Settings.
Terminal Frequency = RX LO ± modem RFQ (see below)
RLO=
RLO?
RLO*
RLO#
RLO? RLO=xxxxxs
(see Description of
Arguments)
Rx Terminal
Frequency
N/A 10 bytes Query only.
Rx Terminal Frequency, which is the frequency (MHz) being received from the satellite.
Note: For additional information refer to Chapter 5 for LO, MIX, and Spectrum Settings.
Resolution=100 Hz
Returns 00000.0000 if LNB LO is zero
Example: RTF=11650.2249 (MHz)
N/A RTF? RTF=xxxxx.xxxx
(see Description of
Arguments)