HP / Agilent 6625A Precision System Power Supply, 25W or 50W, 2 outputs

The HP/Agilent 6625A is a dual-output precision DC power supply delivering 25W or 50W per isolated output. It combines programmable voltage and current control with low-noise performance and comprehensive protection, making it ideal for R&D, automated test systems, and precision measurement applications. Front-panel keypad or GPIB remote control enables straightforward integration into complex test environments. The unit supports SCPI commands and VXIplug&play drivers for seamless instrument coordination.

Technical Specifications Output Capability:

Two independently isolated outputs, each configurable as either 25W or 50W. The 25W configuration offers a low range of 0–7 V, 0–15 mA and a high range of 0–50 V, 0–500 mA. The 50W configuration provides low-range operation at 0–16 V, 0–200 mA and high-range operation at 0–50 V, 0–1 A or 0–16 V, 0–2 A. Programming Accuracy (25°C ±5°C): Voltage accuracy reaches ±(0.016% of setting + 1.5 mV) in the 25W low range and ±(0.016% of setting + 10 mV) in high range. Current accuracy is ±(0.04% of setting + 15 µA) for 25W low range and ±(0.04% of setting + 100 µA) for high range. The 50W configuration delivers ±(0.016% of setting + 53 mV) voltage accuracy in low range and ±(0.016% of setting + 10 mV) in high range, with current accuracy of ±(0.04% of setting + 185 µA) and ±(0.04% of setting + 500 µA) respectively. Output Quality: Ripple and noise across 20 Hz to 20 MHz measures 500 µV RMS and 3 mV peak-to-peak in constant voltage mode, with 1 mA RMS in constant current mode. Readback accuracy tracks programming accuracy within tight tolerances across all ranges.

Key Features

Active down-programmer sinks full rated current with fast response time

Programmable overvoltage and overcurrent protection

Fast CV/CC crossover for stable operation across load transitions

Remote sensing compensates for up to 10 V drop per load lead

Dual isolated outputs for independent load control

Typical Applications Research and development, component and subsystem characterization, automated test system integration, and precision power delivery to analog and digital circuits.

Compatibility & Integration GPIB remote control interface with SCPI command support and VXIplug&play driver availability enable direct integration into test automation frameworks.