Comtech EF Data CDM-550T - Manual (Page 138)

CDM-550T Satellite Modem Revision 3
Remote Control MN/CDM550T.IOM
15–22
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
alpha-numerical
4th 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 = RAM load fail
7 = Tx synthesiser lock
8 = Rx synthesiser
9 = Power cal Checksum error
A = FPGA main chain load fail
B = Turbo FPGA load fail
Tx Traffic status:
0 = Tx traffic OK
1 = No clock from terrestrial interface
2 = Tx FIFO slip
3 = AIS detected on incoming data
4 = AUPC upper limit reached
Rx Traffic status:
0 = Rx Traffic OK
1 = Demodulator unlocked
2 = AGC Alarm - signal level too high
3 = Frame sync lost (Reed-Solomon or EDMAC)
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