Online Automatic Test System Hardware Design for Certain Radar

Considering the high error probability of BIT and the excessive ATE of offline, this paper studies and designs an on-line automatic test system. The test system was designed, and the test requirements were analyzed in this paper. The interface signals of radar line replaceable units (LRU) on working condition are leaded out by three-port conversion card and conditioned with insulation technology, making the effect of the test system on radar minimum. Then the signal is acquired by virtual instruments based on PXI bus. Experiments verify the well test performance and efficiency of the test system.