Abstract: In order to verify the function reliability of the attitude angle convertor of the telemetry system, a high-precision test system based on PXI bus is designed. It is designed as modular design platform based on PXI bus, including different function module plug-in printed circuit board to enhance the expansibility of the hardware construction. The high-precision test system is an integration system design imbedding the display device. The software design, based on the LabWindows/CVI which is the specific program development software of the test system, is coding by C language. In order to fully utilize system resource, the multithread programming technique of which the run and stop is controlled by the software timer to real time refreshes the display data. The feasibility of the test system is well proven by the real time test data.

Key words: Telemetry system, Attitude-angle convertor, Precision measurement