Agilent/Keysight E36311A

The Agilent/Keysight E36311A is an 80 W triple-output programmable DC power supply engineered for benchtop electronic testing and development. It delivers three isolated outputs with independent voltage and current control: a primary 6 V / 5 A channel and dual ±25 V / 1 A tracking outputs. The unit combines precise regulation (0.01% line and load), ultra-low noise performance (<350 µVrms across all outputs), and real-time monitoring via a 4.3-inch LCD display that shows voltage and current for all three channels simultaneously.

Technical Specifications

Output 1: 0–6 V DC at 0–5 A DC with 0.1% + 5 mV programming accuracy and <350 µVrms / 2 mVp-p ripple. Outputs 2 & 3: 0–+25 V DC and 0–−25 V DC respectively, each at 0–1 A DC with 0.05% + 20 mV programming accuracy, <350 µVrms / 2 mVp-p ripple, and fixed tracking-only configuration. Line and load regulation hold 0.01% across all channels. Current ripple measures <2 mA rms on Output 1 and <500 µA rms on Outputs 2 & 3 (20 Hz to 20 MHz). Readback accuracy is 0.1% + 5 mV (Output 1) and 0.05% + 10 mV (Outputs 2 & 3) for voltage; 0.1% + 10 mA and 0.1% + 4 mA respectively for current.

Key Features

• Three independent, galvanically isolated outputs with color-coded binding posts and control knobs


• Individual voltage and current adjustment with digital readback for each channel


• Over-voltage, over-current, and over-temperature protection


• 2-wire remote sensing on all outputs


• USB interface for remote control and E3631A code compatibility


• Compact benchtop form factor: 145 × 216 × 364 mm (H × W × D)


• Class I safety rating; 230 VAC / 115V single-phase supply configurable up to 230 VAC

Typical Applications Laboratory power distribution for mixed-signal circuit characterization, analog subsystem test, and device development requiring multi-rail low-noise supplies.

Compatibility & Integration Programmable via USB; E3631A protocol compatible. Designed for indoor use in low-condensation environments. Higher-specification models (E36312A / E36313A) offer 4-wire sensing and expanded interface options.