Design of decoding circuits of high speed PCM data

The Design and realization of decoding circuits for PCM telemetry signals is introduced in the paper.The system accomplished the mission of decoding high-speed difference PCM signal received, and recording data by frame. The key to the module of 422 is how to implement serial-parallel data conversion. And The key to the module of ±2. 5V is how to is achieve code-synchronization and frame - synchronization. The choice and analyze of parts of an apparatus are recommended. In the paper and The circuit has applied in one test platform successfully. It has the merit of stabilization and anti-jamming.