Comtech EF Data CDM-500 - Manual (Page 82)

CDM-500 Closed Network Satellite Modem Remote Control
Rev. 1.3 B–17
Parameter
Type Command
(Instruction
Code and
qualifier) Arguments
for Command
or Response to
Query Description of arguments
(note that all arguments are ASCII numeric codes,
that is, ASCII codes between 48 and 57) Response to
Command (target to
controller) Query
(Instruction
Code and
qualifier) Response to
query (target
to controller)
Faults and
Status N/A 5 bytes, first 3
bytes
numerical4th
and 5th bytes,
value of 0 or 1 Query only.
Unit returns the current fault and status codes for the
Unit (hardware), Tx Traffic and Rx Traffic, in the
form abcde, where:
a = Unit fault status, b = Tx Traffic status,
c = Rx Traffic Status, d = Change in Fault Status
since last poll (0 = none, 1 = change), e = Change in
Unit Configuration since last poll (0 = none, 1 =
change)
Unit faults:
0 = No faults
1 = Power supply fault, 5 volts
2 = Power supply fault , 12 volts
3 = Power supply fault, -5 volts
4 = Power supply fault, 18 volts
5 = Power supply fault, -12 volts
6 = FPGA load fail
7 = Tx synthesiser lock
8 = Rx synthesiser
9 = Power cal Checksum error
Tx Traffic status:
0 = Tx traffic OK
1 = No clock from terrestrial interface
2 = Tx FIFO slip
3 = AIS detected on incoming data
Rx Traffic status:
0 = Rx Traffic OK
1 = Demodulator unlocked
2 = AGC Alarm - signal level too high
3 = Frame sync lost (EDMAC mode only)
4 = Buffer Underflow
5 = Buffer Overflow
6 = AIS detected on incoming data
7 = Eb/No threshold exceeded N/A FLT? FLT=abcde
(see description
for details of
arguments