Comtech EF Data cdm-570a - Page 320

CDM-570A/570AL Satellite Modem with Optional Packet Processor
Revision 5
Serial-based Remote Product Management 8–54 MN-CDM570A
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
CnC
Delay Monitor
N/A
6 bytes
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)
N/A
CDM?
CDM=xxxxxx
(see Description of
Arguments)
CnC
Freq Offset
Monitor
N/A
6 bytes
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)
N/A
CFF?
CFF=xxxxxx
(see Description of
Arguments)
CnC Power
Ratio Monitor
N/A
6 bytes
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)
N/A
CPR?
CPR=xxxxxx
(see Description of
Arguments)
CnC PSDR
N/A
5 bytes
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)
N/A
PSD?
PSD=xxxxx
(see Description of
Arguments)