Comtech EF Data CDM-570A Installation And Operation Manual page 320

Command
Parameter (Instruction
Type Code and
Qualifier)
CnC N/A 6 bytes
Delay Monitor
CnC N/A 6 bytes
Freq Offset
Monitor
CnC Power N/A 6 bytes
Ratio Monitor
CnC PSDR N/A 5 bytes
Serial-based Remote Product Management
Arguments for
Command or
Response to
Query
Query only.
Valid only in CDM-570A Compatible Mode (CMO=1).
Monitors the delay, in microseconds, of the interferer when CnC is enabled and
the modem is locked.
Examples: <0/CDM?
1) >0/CDM=229500 (229.5 ms)
2) >0/CDM=999999 (CnC not locked or CnC not enabled)
3) >0/CDM=888888 (In CnC mode, but Tx carrier is off)
Query only.
Valid only in CDM-570A Compatible Mode (CMO=1).
Calculates an estimated frequency offset, in kHz, between the interferer and the
desired power when CnC is enabled.
Examples: <0/CFF?
1) >0/CFF=+001.0 (1 kHz)
2) >0/CFF=9999.9 (CnC not locked or CnC not enabled)
3) >0/CFF=8888.8 (In CnC mode, but Tx carrier is off)
Query only.
Valid only in CDM-570A Compatible Mode (CMO=1).
When CnC is enabled and the modem is locked, ratio (in dB) between the
interferer and the desired power is monitored, with 0.1dB resolution.
Examples: <0/CPR?
1) >0/CPR=+02.8 (interferer>desired) (format = sdd.d)
2) >0/CPR=LT11.0 (less than –11.0 dB)
3) >0/CPR=GT19.0 (greater than +19.0 dB)
4) >0/CPR=9999.9 (not locked or CnC not enabled)
5) >0/CPR=AUTO (in CnC-APC mode)
Query only.
Valid only in CDM-570A Compatible Mode (CMO=1).
When CnC is enabled and the modem is locked, ratio (in dB) between the
interferer and the desired power is monitored, with 0.1 dB resolution.
Examples: <0/PSD?
1) >0/PSD=+02.8 (interferer>desired) (format = sdd.d)
2) >0/PSD=999.9 (not locked or CnC not enabled)
3) >0/PSD=AUTO (in CnC-APC mode)
CDM-570A/570AL Satellite Modem with Optional Packet Processor
Description of Arguments
8–54
Revision 5
Query
Response to
(Instruction Code
Command
and Qualifier)
N/A CDM? CDM=xxxxxx
(see Description of
Arguments)
N/A CFF? CFF=xxxxxx
(see Description of
Arguments)
N/A CPR? CPR=xxxxxx
(see Description of
Arguments)
N/A PSD? PSD=xxxxx
(see Description of
Arguments)
MN-CDM570A
Response to
Query