Performance Testing of PCM Bit Synchronizers

Abstract

Performance testing of modern PCM bit synchronizers requires special test equipment above and beyond that available in commercial laboratory instruments. As a result of this need, a standard product Telemetry Bit Error Rate Detector (TBERD) has been designed to fill the requirement for a special-purpose test instrument for use with PCM systems. After examining the primary performance characteristics of bit synchronizers, the TBERD unit was designed to measure both detection and synchronization performance for a wide range of bit rates and for all of the commonly used PCM codes.