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For the universal requirements of of missile-borne telemetry system. It proposes a universal PCM encoder based on FPGA . A signal processing method basd on software processing instead of hardware,applies verilog HDL language and modularization, down-top design ideas, integrates the encoder's functional modules in the single chip FPGA. It can encode telemetry datas by putting functional modules together and configuring parameters. Simulation results show that the coder parameters meet the test most telemetry system requirements, Telemetry system flight test results show that the encoder work stable and reliable, this encoder has strong universality. 