Collection inscriber for helicopter avionics bus

The utility model relates to a helicopter avionic bus acquisition recorder, which comprises a main control module, a first 1553B acquisition module, a second 1553B acquisition module, a PCM data stream receiving module, a time base acquisition, PCM output and control display module, a power supply module and electronic disk recording module. The main control module, the first 1553B acquisition module, the second 1553B acquisition module, the PCM data stream receiving module, and the time base acquisition, PCM output and control display module are connected through PC104+buses. The electromagnetic disk recording module and the main control module are connected through IDE buses. The avionic bus acquisition recorder receives the data from two 1553B buses and two PCMs in real time. The data are directly stored on the electronic disk recording module on one way; on the other way, the data are extracted and are converted into PCM stream format according to PCM raster tables, which are output in the format of RS-42