Introduction QuadTech's new 42000 Series© of programmable DC power supplies offer many unique advantages for ATE integration and testing. These advantages include a constant power operating envelope, precision readback of output cur- rent and voltage, output trigger signals, as well as, the ability to create com- plex DC transients waveforms to test device behavior to spikes, drops and other voltage deviations. Designed for automated testing DC-DC converters and similar products, the 42000 sets a new standard for high accuracy pro- grammable DC supplies. The 42000 Series includes nine different models ranging from 600W to 5000W, up to 120A and up to 600V. Due to their constant power operating envelope, a single instrument can provide both high voltage/low current and low voltage/high current, thereby reducing the number of supplies needed in typical ATE applications. Description Capabilities: The 42000 Series includes a 16-bit readback capability for accu- rate voltage and current readings. This means, systems no longer need com- plex shunt/multiplexers to make accurate readings of the UUT's input param- eters. The instruments also include I/O ports providing 8-bit TTLs, DC-ON, fault output signal and remote inhibit, as well as, an output trigger signal for system timing measurements. Another unique capability of the 42000 Series supplies is their ability to cre- ate complex DC transient waveforms. This capability allows devices to be test- ed to DC voltage dropouts, spikes and other voltage variations making them an ideal choice for airborne device testing, inverter testing and other devices which will experience voltage interrupts. Applications include DC/DC Converter & Inverter voltage drop test, engine startup simulation, battery auto- mated charging, electronic product life cycle test, etc.