Comtech EF Data CDM-550T, Manual

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CDM-550T Satellite Modem Remote Control
Rev. 1.3 15–21
Parameter
Type Command
(InstructionC
ode 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)
Software
Revision N/A 4 bytes,
numerical Query only.
Unit returns the value of internal software revision installed in
the unit, in the form x.xx
Example: SWR=1.03 (Ver 1.03) N/A SWR? SWR=x.xx (see
description for details
of arguments)
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