Agilent/Keysight 6281A DC Power Supply

The Agilent/Keysight 6281A is a regulated benchtop DC power supply delivering 10 W across a 0 to 7.5 V, 0 to 5 A output range. It operates in both constant voltage (CV) and constant current (CC) modes, providing metered readback and front-panel control with coarse/fine adjustment capability. The unit features programmable output via analog control inputs (0 to –5 V for voltage, 0 to +5 V for current at 30 kΩ input impedance) and integrates overvoltage, overcurrent, and over-temperature protection with auto-restart functionality.

Technical Specifications

• Output Voltage: 0 to 7.5 VDC


• Output Current: 0 to 5 A


• Output Power: 10 W


• Overall Regulation: 0.01%


• Voltage Ripple & Noise: 1.5 mV RMS, 10 mV peak-to-peak


• Transient Response Time: Less than 900 µs (100% to 50% or 50% to 100% load step, recovery within 150 mV)


• Remote Sensing: Up to half the rated output voltage drop per load lead Programming Accuracy:


• Voltage: 0.05% + 7.5 mV


• Current: 0.1% + 600 mA

Key Features

• Constant voltage and constant current operating modes


• Analog programmability with high input impedance (≥30 kΩ)


• Three-tier protection: overvoltage, overcurrent, and over-temperature


• Panel lock function prevents accidental setting changes


• Selectable compensation for inductive loads


• Output derating under unbalanced AC input conditions


• GPIB interface support for remote control and automated test integration

Typical Applications Burn-in testing, quality assurance, automated test equipment (ATE), research, design, and educational environments requiring stable, controllable DC power with precision metering.

Compatibility & Integration GPIB interface enables remote programming and monitoring. VXIplug&play driver support facilitates simplified integration into larger test systems.