Agilent/Keysight 66101A DC Power Supply

The Agilent/Keysight 66101A is a 128 W DC power module engineered for automated test equipment (ATE) and production test environments. This compact power supply delivers 0–8 Vdc at 0–16 A and integrates into the 66000 Series Modular Power System via the 66000A mainframe. The modular architecture enables flexible multi-channel configurations, space-efficient rack integration, and tool-less module swapping through quick-disconnect connectors.

The 66101A combines high precision with low noise performance. Voltage programming accuracy reaches 0.03% + 3 mV with readback accuracy of 0.02% + 2 mV (at 25°C ±5°C). Current programming accuracy is 0.03% + 6 mA with 0.02% + 6 mA readback.

Output ripple and noise remain exceptionally low: 2 mV RMS and 5 mV peak-to-peak across 20 Hz to 20 MHz. Line and load regulation are equally precise, with voltage regulation of 0.5 mV line and 1 mV load, and current regulation of 0.75 mA line and 0.5 mA load.

Technical Specifications

• Output Voltage: 0–8 Vdc


• Output Current: 0–16 A


• Maximum Power: 128 W


• Voltage Ripple/Noise: 2 mV RMS, 5 mV peak-to-peak (20 Hz–20 MHz)


• Current RMS Noise: 8 mA


• Module Weight: 2.8 kg (6 lb)

Key Features

• GPIB remote programming and SCPI command compatibility


• VXIplug&play drivers supported


• Electronic calibration via GPIB or keyboard


• Programmable over-voltage and over-current protection


• Over-temperature protection and discrete fault indicator/remote inhibit


• LIST Mode and output sequencing for advanced test automation


• Self-test at power-up or via GPIB command

Typical Applications Component and subsystem characterization, production power source verification, and multipoint test scenarios requiring independent voltage and current channels within a single rack frame.

Compatibility & Integration Requires the 66000A Power System Mainframe (4U rack space; supports up to eight 150 W modules). Option 760 includes the 5060-3387 Interconnect Module with isolation/polarity relays. Note: This product is manufacturer-designated obsolete.