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because the switch and trigger assembly have fault frequently, maintenance effectiveness is long, and maintenance is difficult for the next generation weather radar transmitter, puts forward a kind of the next generation weather radar switch and trigger assembly key chips fast, convenient, efficient, safe and fast automatic detection system. The automatic testing system uses an off-line testing method to ensure the safety of the radar equipment and the body. The automatic detection system adopts the automatic fast test method of the output test result of the light emitting diode indicator, which ensures the short time of the radar repair. The automatic detection system directly tests the key chips of the internal circuit boards of the radar switches and triggers, instead of replacing the cumbersome spare parts of the bulky components, so that the maintenance of the next generation weather radar is more convenient and efficient. The next generation of weather radar switch and trigger rapid maintenance system has been tested at several weather radar stations. The results show that the effect is good, and it can provide reference for other next generation weather radar stations to quickly repair the next generation weather radar.