Self-Contained Rack Mountable PCM Bit Synchronizer performs input signal conditioning, bit synchronization, data reconstruction, code conversion, clock generation, and output conditioning to provide clean, synchronous serial data and clock signals. The PCM Bit Synchronizer comes in a self-contained 19 rack-mount chassis. The PCM Bit Synchronizer provides a tunable bit rate capability over its full operating range of 10 bps to 20 Mbps for NRZ codes and 10 bps to 10 Mbps for Bi-phase, RZ and DM codes. Self-Contained Rack Mountable PCM Bit Synchronizer is made of quality grade raw material which ensures optimum durability along with long lasting trouble free service.