Investigation of a Pam Tester Using PN Waveforms.
WHITE SANDS MISSILE RANGE N MEX INSTRUMENTATION DIRECTORATE
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A PAM tester using a shift register generated sequence and a conventional data PCM bit synchronizer and detector for synchronization was investigated. It was found to function satisfactorily with and without predetection tape recording. This tester can be implemented by adding digital-to-analog converters DACs, an error gate, and a rms voltmeter to a PN PCM tester which uses a shift register to generate the PN sequence. Author