Comtech EF Data SDM-650B - Manual (Page 207)

SDM-650B Satellite Modem Remote Control Operation
Rev. 6 B–31
Where: Character “c”: Demodulator fault status character 1.
Bit 6 = 1 always.
Bit 5 = Demodulator fault.
Bit 4 = Carrier detect status (0 for decoder lock).
Bit 3 through Bit 0 = Binary representation (0 to 10) of the number of demodulator
stored faults.
Where: Character “d”: Demodulator fault status character 2.
Bit 6 = 1 always.
Bit 5 = Demodulator RF synthesizer fault.
Bit 4 = Descrambler fault.
Bit 3 = I channel fault.
Bit 2 = Q channel fault.
Bit 1 = Bit clock fault.
Bit 0 = BER threshold fault.
Where: Character “e”: Common equipment fault status character 1.
Bit 6 = 1 always.
Bit 5 = M&C fault.
Bit 4 = Interface fault.
Bit 3 through Bit 0 = Binary representation (0 to 10) of the number of common
equipment stored faults.
Where: Character “f”: Common equipment fault status character 2.
Bit 6 = 1 always.
Bit 5 = Battery fault.
Bit 4 = +5V fault.
Bit 3 = +12V fault.
Bit 2 = -12V fault.
Bit 1 = Transmit clock loss fault (DS-1 only).
Bit 0 = not used.
Where: Character “g”: Interface receive side faults character 1.
Bit 6 = 1 always.
Bit 5 = Buffer underflow.
Bit 4 = Buffer overflow.
Bit 3 through Bit 0 = Binary representation (0 to 10) of the number of interface receive
side stored faults.
B.1.4.17 Change Status
This command indicates that a change has or has not occurred on either the BCS_ or the
BCSF_ response since the last BCS_ or BCSF_ poll.
Command:
Response: >add/CS_x”cr””lf”]
Where: x =
“@” = no change since last CS_ poll.
“A” = BCS_ response has changed since last CS_ poll.
“B” = BCSF_ response has changed since last CS_ poll.
“C” = Both responses have changed since last CS_ poll.