Series 4312 multi-range, 120 V, modular DC load provides precision loading as well as output measurements for characterizing USB (5 V), LPS (20 V), and any external AC/DC power supply. Front-loading, 16-slot, 8 ¾ in. (5U) 4300 chassis supports any combination of 4312 Series DC loads as well as 4350 Series 500 Vdc loads and 4301 AC/DC power analyzers. Each instrument embeds 1 MSPS digitizer, multiple measurement ranges, and additional support features.