Agilent / Keysight E3646A DC Power Supply

The Keysight E3646A is a 60 W dual-output, dual-range programmable DC power supply engineered for R&D, design verification, and production testing. Each output independently selects between 0–8 Vdc @ 0–3 A or 0–20 Vdc @ 0–1.5 A, with voltage programming accuracy of ±0.05% + 10 mV and load regulation under 0.01% + 3 mV. Output voltage ripple remains below 0.5 mVrms / 5 mVpp, while transient response recovers within 50 µsec following load step changes.

Readback accuracy for voltage is ±0.05% + 2 counts; current readback is ±0.15% + 5 mA on Output 1 and ±0.15% + 10 mA on Output 2.

Technical Specifications

• Output Power: 60 W total


• Dual-Range Outputs: 0–8 Vdc @ 0–3 A or 0–20 Vdc @ 0–1.5 A per output


• Voltage Programming Accuracy: ±0.05% + 10 mV


• Load Regulation (Voltage): < 0.01% + 3 mV


• Load Regulation (Current): < 0.01% + 250 µA


• Voltage Ripple & Noise: < 0.5 mVrms / < 5 mVpp


• Current Noise: < 4 mArms


• Transient Response: < 50 µsec (full to half load, within 15 mV)


• Voltage Readback Accuracy: ±0.05% + 2 counts


• Current Readback Accuracy: ±0.15% + 5 mA (Output 1); ±0.15% + 10 mA (Output 2)


• Stability (8 hours, constant load/temperature): Voltage < 0.02% + 2 mV; Current < 0.02% + 3 mA


• Over-Voltage Protection Accuracy: ±(0.5% + 0.5 V)


• OVP Activation Time: < 1.5 msec (≥ 3 V); < 10 msec (< 3 V)


• AC Input: 115 Vac ±10%, 47–63 Hz (standard); options for 100 Vac or 230 Vac


• Maximum Input Power: 210 VA


• Common Mode Current: < 1.5 µArms

Key Features

• Front and rear output terminals for flexible test-point connectivity


• Remote sensing capability with 1 V maximum load lead voltage drop


• Vacuum fluorescent display with front-panel rotary knob and keypads


• Dual-range selectable outputs on each channel


• Programmable over-voltage protection with adjustable trip threshold


• Fan-cooled with automatic speed control for reduced noise


• Safety Class I with protective earth terminal


• User-replaceable power line fuse

Interfaces & Control

• GPIB (IEEE-488) - standard


• RS-232 - standard


• SCPI (Standard Commands for Programmable Instruments) compatible

Typical Applications

• Component and subsystem design verification


• Automated production test systems


• Research and development bench work


• Sensitivity and margin testing of electronic circuits