Comtech EF Data SDM-650B Especificações descarregar pdf (Página 155)

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SDM-300L3 Satellite Modem Revision 0

Front Panel Operation MN/SDM300L3.IOM

4–59

FUNCTION SELECT: FAULTS/ALARMS: MODULATOR

MODULATOR

---------

IF SYNTHESIZER Modulator IF synthesizer fault.

DATA CLOCK SYN Transmit clock synthesizer fault. Indicates the internal Voltage

Controlled Oscillator (VCO) has not locked to the incoming data clock.

I CHANNEL I channel data activity fault.

Q CHANNEL Q channel data activity fault.

AGC LEVEL TX IF AGC level fault.

MODEM REF ACT MODEM REF activity alarm.

MODEM REF PLL MODEM REF PLL not locked.

MODULE Modulator module fault.

CONFIGURATION Modulator configuration fault.

FUNCTION SELECT: FAULTS/ALARMS: DEMODULATOR

DEMODULATOR

-------

CARRIER DETECT Carrier detect fault. Indicates the decoder is not locked.

IF SYNTHESIZER Demodulator IF synthesizer fault. Indicates the IF synthesizer

is not locked.

I CHANNEL I channel activity fault. Indicates a loss of activity in the I

channel of the quadrature demodulator.

Q CHANNEL Q channel activity fault. Indicates a loss of activity in the

Q channel of the quadrature demodulator.

BER THRESHOLD Secondary alarm result of the BER threshold set in the

DEMOD Configuration menu.

MODULE Demodulator/decoder module fault.

CONFIGURATION Demodulator/decoder configuration fault.

LNB CURRENT LNB Current fault.

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Comtech EF Data SDM-650B Especificações Página 155

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