Comtech EF Data SDM-650B - Manual (Page 339)

SDM-650B Satellite Modem Trojan Interface
Rev. 5 G–43
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.
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.
Character “e”: Common equipment fault status character 1.
Bit 6 = 1 always.
Bit 5 = M&C fault.
Bit 4 = Reference fault.
Bit 3 through Bit 0 = Binary representation (0 to 10) of the
number of common equipment stored faults.
Character “f”: Common equipment fault status character 2.
Bit 6 = 1 always.
Bit 5 = Battery fault.
Bit 4 = +5 volt fault.
Bit 3 = +12 volt fault.
Bit 2 = -12 volt fault.
Bit 1 = Overflow fault.
Bit 0 = Underflow fault.
G.6.4.5.16 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.