Abstract: In the paper a new telemetry simulation signal source systemwhich consists of E~2PROM (Electrically Erasable Programmable only Me-mory) and some auxilary circuits are introduced.Firstly,according to thesignals needed by the telemetry system,the system makes programming oncomputer and generates telemetry simulation data and data format by meansof CAD.Then E~2PROM programming card writes E~2PROM the simulationdata and data format.This system implements programmable design and au-tomatic generation of telemetry simulation data stream. In fact it has beenshown that the system can overcome traditional complexity poor generalityand difficulty in modification of data and format in data stream;in addi-tion,the reliability and stability of data stream are improved largely.Itcan be used in telemetry system better.

Key words: Simulation signal source, Programmable telemetry system, Satellite, Application