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Remote Control
Bit 3 through Bit 0 = Binary representation (0 - 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 = not used.
Bit 0 = not used.
Character "g": Interface transmit side faults character 1.
Bit 6 = 1 always.
Bit 5 = not used.
Bit 4 = not used.
Bit 3 through Bit 0 = Binary representation (0 - 10) of the number of interface
transmit side stored faults.
Character "h": Interface transmit side faults character 2.
Bit 6 = 1 always.
Bit 5 = Transmit clock activity fault.
Bit 4 = Drop fault.
Bit 3 = Transmit DATA/AIS fault.
Bit 2 = not used.
Bit 1 = not used.
Bit 0 = not used.
Character "i": Interface receive side faults character 1.
Bit 6 = 1 always.
Bit 5 = MUX lock fault.
Bit 4 = Insert clock activity fault.
Bit 3 through Bit 0 = Binary representation (0 - 10) of the number of interface
receive side stored faults.
Character "j": Interface receive side faults character 2.
Bit 6 = 1 always.
Bit 5 = Insert fault.
Bit 4 = Receive backward alarm fault.
Bit 3 = Frame BER fault.
Bit 2 = Receive DATA/AIS fault.
Bit 1 = Buffer overflow fault.
Bit 0 = Buffer underflow fault.
B-B–28
SDM-309B Satellite Modem
MN/U-SDM309B Rev. #
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