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CDM-Qx Satellite Modem Revision 4
Remote Control MN/CDMQx.IOM
C-36
Parameter
Type
Command
(Instruction
Code and
qualifier)
Arguments for
Command or
Response to
Query
Description of Arguments
Response
to
Command
(Target to
Controller)
Query
(Instruction
Code and
Qualifier)
Response to query
(Target to
Controller)
RX Signal Level N/A 4 bytes
Query Only
Unit returns the value of the RX signal Level, in dBm,
between –20 and –99 dBm, in the form: ccxx, where:
Cc=code
GT=Greater Than
LT=Less Than
= is equal to
xx=value (the ‘-‘ sign is implied)
Example:
RSL=LT99 (RX signal level is less than –99 dBm)
RSL===41 (RX signal level is equal to –41 dBm)
N/A RSL? RSL=ccxx
(see description of
arguments)
RX BER N/A 5 bytes Query only
Unit returns the value of the estimated corrected BER in
the form a.b x 10
-c
. First 3 bytes are the value. Last 2
bytes are the exponent. Returns 99999 if the
demodulator is unlocked.
Example: BER=4.8E3 (BER = 4.8 x 10
-3
)
N/A BER? BER=a.bEc
(see description of
arguments)
CnC Ratio
Monitor
N/A 4 bytes Query only
When CnC is enabled and it’s locked, it monitors the ratio
between the interferer and the desired power in dB.
Example 1: CRM==+02 (interferer > desired)
Example 2: CRM=LT10 (less than –11 dB)
Example 3: CRM=GT10(greater than +11 dB)
Example 4: CRM=99.9 (not locked or CnC not enabled)
N/A CRM? CRM=xxxx
(see description of
arguments)
CnC Delay
Monitor
N/A 7 bytes Query only
When CnC is enabled and it’s locked, it monitors the
delay of the interferer in microseconds.
Example 1: CDM=229,500 (229.5 ms)
Example 2: CDM=999,999 (not locked or CnC not
enabled)
N/A CDM? CDM=xxx.xxx
(see description of
arguments)