Up to now

there are no special tools to analyze and detect the digital output of combination unit.This paper introduced the digital output mode of electronic transformer

and developed an analyzer based on LabWindows/CVI.The analyzer acquired signals from the transformer’s digital output port by network interface card

sorted and recombined the signals

and finally realized displaying waveform

saving and analyzing data etc.functions.The analyzer is an effective testing tool for developing the electronic transformer combination unit in laboratory.