CDM-600 Satellite Modem Revision 7
Remote Control MN/CDM600.IOM
16–14
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
Tx IF
Impedance
TIP= 1 byte, value
of 5 or 7
Command or Query.
Tx IF Impedance, where:
5=50Ω
7=75Ω
Both Tx and Rx sides will change with this selection.
Example: TIP=5 (50Ω)
TIP=
TIP?
TIP*
TIP#
TIP? TIP=x
(see description of
arguments)
Rx Frequency RFQ= 8 bytes Command or Query.
With hardware revision xx.0: standard frequency range:
52 MHz to 88 MHz, or 104 MHz to 176 MHz.
With hardware revision xx.1: extended frequency range:
50 MHz to 90 MHz, or 100 MHz to 180 MHz.
Use HRV? to obtain the hardware revision level.
Resolution=100Hz.
Example: RFQ=072.9872
Note: The CDM600 supports both 70 and 140 MHz bands.
RFQ=
RFQ?
RFQ*
RFQ#
RFQ? RFQ=xxx.xxxx
(see description of
arguments)
Rx Interface
Type
RIT= 1 byte, value
of 0 thru 6
Command or Query.
Rx Interface Type, where:
0=RS422
1=V.35
2=RS232 (synchronous)
3=Balanced G.703
4=Unbalanced G.703
5=Audio (Data rate is fixed at 64 kbps) (IBS/EDMAC
only)
6=LVDS
Example: RIT=1 (selects V.35)
RIT=
RIT?
RIT*
RIT#
RIT? RIT=x
(see description of
arguments)