Agilent/Keysight 6131C DC Power Supply

The Agilent/Keysight 6131C is a precision DC power supply delivering up to 50 W of stable, programmable output voltage. Engineered as a digital voltage source for automatic test systems, it combines high accuracy with remote control capabilities and excellent line and load regulation. The instrument operates across a ±100 Vdc range with output current to 0.5 A, making it suitable for demanding measurement and characterization tasks in laboratory and production environments.

Technical Specifications

Output Voltage

• Range: ±100 Vdc


• Accuracy (23°C ±3°C, 115 Vac input, 30 min warm-up): 1 mV (X1 range), 10 mV (X10 range)


• Range switching time: 2 msec Output Current


• Range: 0 to 0.5 A


• Load regulation: 4 mV voltage change, 0.5 mA current change Regulation & Stability


• Line regulation (104–126 Vac): 500 µV (X1), 5 mV (X10)


• Ripple and noise (20 Hz to 20 MHz): 0.5 mV RMS


• 8-hour stability: Input signal stability + 500 µV (X1), + 5 mV (X10)


• DC gain: −1 ± 0.2% (X1), −10 ± 0.2% (X10) Sink Current Compliance

Linear from 0.25 A at 100 V to 0.55 A at 0 V Bandwidth
X10 range: Approximately 25 kHz to −3 dB point

Key Features

• Programmable voltage settings with two selectable ranges for precision control


• Remote programming via isolated digital inputs


• Built-in GPIB and RS-232 interfaces for system integration


• Fully isolated analog outputs and digital control circuits


• Class I safety classification with protective earth grounding


• Compact form factor: 16 × 14 × 10 in, 8.2 kg

Typical Applications

• Automatic test equipment (ATE) and characterization systems


• Device testing requiring stable, programmable bias supplies


• Precision measurement and calibration work


• Production test environments requiring remote control and repeatability

Compatibility & Integration Designed for seamless integration into automated systems. GPIB and RS-232 communication enable remote voltage programming and system monitoring. Dual voltage ranges (X1 and X10) provide flexibility across different output specifications. Maximum operating altitude: 2000 m; relative humidity to 95%.