Comtech EF Data CDM-625A Installation And Operation Manual page 370

CDM-625A Advanced Satellite Modem
Serial-based Remote Product Management
Command
Number of
Parameter (Instruction
Arguments
& Qualifier)
...Faults and
Status (cont.)
CnC N/A 4 bytes
Ratio Monitor
CnC N/A 6 bytes
Delay Monitor
CnC N/A 6 bytes
Freq Offset
Monitor
CnC Power Ratio N/A 6 bytes
Monitor
CnC PSDR N/A 5 bytes
CnC-APC Bit Error N/A 4 bytes
Rate
Description of Arguments
4=BUC no comms/bad checksum
5=BUC PLL
6=BUC temperature
h=LNB status/faults:
0=OK, masked, or not present
1=LNB current
2=LNB voltage
xx=spares
Query only.
When CnC is enabled and the modem is locked, ratio (in dB) is monitored between the interferer and the desired power.
EXAMPLE 1: <0/CRM? >0/CRM=+02 (interferer > desired) (format=sdd)
EXAMPLE 2: <0/CRM? >0/CRM=LT11 (less than -11 dB)
EXAMPLE 3: <0/CRM? >0/CRM=GT11 (greater than +11 dB)
EXAMPLE 4: <0/CRM? >0/CRM=99.9 (not locked or CnC not enabled)
EXAMPLE 5: <0/CRM? >0/CRM=AUTO (in CnC-APC mode)
Query only.
When CnC is enabled and the modem is locked, delay (in microseconds) of the interferer is monitored.
EXAMPLE 1: <0/CDM? >0/CDM=229500 (229.5 ms)
EXAMPLE 2: <0/CDM? >0/CDM=999999 (not locked or CnC not enabled)
Query only.
When CnC is enabled, an estimated frequency offset (in kHz) is calculated between the interferer and the desired power.
EXAMPLE 1: <0/CFM? >0/CFM=+001.0 (1 kHz)
EXAMPLE 2: <0/CFM? >0/CFM=9999.9 (not locked or CnC not enabled)
Query only.
When CnC is enabled and the modem is locked, ratio (in dB) between the interferer and the desired power is monitored..
The precision is 0.1dB.
EXAMPLE 1: <0/CPR? >0/CPR=+02.8 (interferer > desired) (format=sdd.d)
EXAMPLE 2: <0/CPR? >0/CPR=LT11.0 (less than -11.0 dB)
EXAMPLE 3: <0/CPR? >0/CPR=GT19.0 (greater than +19.0 dB)
EXAMPLE 4: <0/CPR? >0/CPR=9999.9 (not locked or CnC not enabled)
EXAMPLE 5: <0/CPR? >0/CPR=AUTO (in CnC-APC mode)
Query only.
When CnC is enabled and the modem is locked, ratio (in dB) between the interferer and the desired power is monitored.
The precision is 0.1dB.
EXAMPLE 1: <0/PSD? >0/PSD=+02.8 (interferer > desired) (format=sdd.d)
EXAMPLE 2: <0/PSD? >0/PSD=999.9 (not locked or CnC not enabled)
EXAMPLE 3: <0/PSD? >0/PSD=AUTO (in CnC-APC mode)
Query only.
Returns the value of CnC-APC BER in the form xEc, where:
x=value
Ec=Exponent
BER is measured in frame UW.
EXAMPLE: <0/ABE? >0/ABE=8E5 (indicates CnC-APC BER @ 8 x 10
NOTE: Returns 9999 if modem is not in CnC-APC mode or there is an APC frame sync error.
)
-5
8–56
MN-CDM625A
Revision 4
Query
Response to
(Instruction & Response to Query
Command
Qualifier)
N/A CRM? CRM=xxxx
(see Description of
Arguments)
N/A CDM? CDM=xxxxxx
(see Description of
Arguments)
N/A CFM? CFM=xxxx.x
(see Description of
Arguments)
N/A CPR? CPR=xxxxxx
(see Description of
Arguments)
N/A PSD? PSD=xxxxx
(see Description of
Arguments)
N/A ABE? ABE=xEc