Comtech EF Data CDM-760 - Manual (Page 273)

Serial-based Remote Product Management Revision 2
CDM-760 Advanced High-Speed Trunking Modem MN-CDM760
8–39
Parameter
Type
Command
(Instruction
& Qualifier)
Number of
Arguments
Description of Arguments
Response to
Command
Query
(Instruction &
Qualifier)
Response to Query
Faults and
Status (cont.)
00000800 = PIIC2 External Clock Activity
00000400 = PIIC2 External Clock In Range
00000200 = Log File Fault
NOTE: External clocks are not valid with OC3 interface
bbbbbbbb = Tx status:
00000000 = No Faults
80000000 = Input Data
40000000 = Tx PLL
20000000 = PIIC1 Symbol Clock PLL
10000000 = PIIC2 Symbol Clock PLL
08000000 = PIIC1 Input Signal Loss
04000000 = PIIC2 Input Signal Loss
02000000 = Ethernet Buffer Clear
cccccccc = Rx status:
00000000 = No Fault
80000000 = Demodulator unlocked
40000000 = AGC Signal Level
20000000 = CnC Lock
10000000 = Output Data
08000000 = Es/No
04000000 = PLL
02000000 = PIIC1 Buffer Overflow
0100000 = PIIC1 Buffer Underflow
00800000 = PIIC1 Buffer PLL
00400000 = PIIC2 Buffer Overflow
00200000 = PIIC2 Buffer Underflow
00100000 = PIIC2 Buffer PLL
00080000 = DeComp Inv
00040000 = LNB Current
00020000 = LNB Voltage
d = Change in modem fault status since last poll
0 = unchanged
1 = changed
e = Change in modem configuration since last poll
0 = unchanged
1 = changed
xx = spares
CnC
Ratio Monitor
N/A 4 bytes Query only.
When CnC is enabled and the modem is locked, it monitors the ratio between the interferer and the
desired power. Ratio is returned, in dB, in the form xxxx.
EXAMPLE: <0/CRM?
RESPONSE EXAMPLE 1: >0000/CRM=+02 (interferer > desired) (format: = sdd)
RESPONSE EXAMPLE 2: >0000/CRM=LT11 (less than –11 dB)
RESPONSE EXAMPLE 3: >0000/CRM=GT11 (greater than +11 dB)
RESPONSE EXAMPLE 4: >0000/CRM=99.9 (not locked or CnC not enabled)
N/A CRM? CRM=xxxx
(see Description of
Arguments)