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AUDIO_FILTERS_FOR_SNR_MEASUREMENT

2017-02-15 03:03  
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AUDIO_FILTERS_FOR_SNR_MEASUREMENT
Used in checking performance of Harris HC-55516/55532 haff-duplex modulator-demodulator systems for converting voice signals into s rial NRZ digital data and reconverting that data back to voice. Supply required for opamp sections is ±15 V. Response of input filter is down 3 dB at 3 kHz and is down 20 dB at 9 kHz. Response of output filter is flat up to 3 kHz and down more than 45 dB from 3.8 kHz to 100kHz.- Linear & Data Acquisition Products, Harris Semiconductor,Melbourne,FL,Vol.1,1977,p 5-10.