... VASuitable for Sine, Square, Step waveDescription The 3250 series AC&DC Load Module is suitable for Sine, Square, Step wave testing ... which provides an idea testing solution for UPS, AVR, D/A inverter, especially for step or square waveform ... test throughput.3250 Series are suitable for AC/DC, DC/DC, DC/AC testing, UPS output loading test, DC, 40~70Hz Power Transformer, and can be ...