Agilent/Keysight 66321B DC Power Supply

The Agilent/Keysight 66321B is a single-output DC power supply engineered for battery-powered device testing, mobile communication validation, and automated test environments. It delivers 0–15 V at 0–3 A continuous current, with 5 A peak capability (7 ms maximum), up to 50 W output power. The instrument combines precise voltage and current programming with advanced battery emulation, dynamic current measurement, and transient compensation to replicate real-world battery behavior under load.

Technical Specifications

• Voltage: 0 to 15 V


• Continuous current: 0 to 3 A


• Peak current: 5 A (7 ms maximum; average must not exceed 3 A)


• Maximum power: 50 W Programming Accuracy (25°C ±5°C)


• Voltage: 0.05% + 10 mV


• Current: 0.05% + 1.33 mA


• Resistance: 0.5% + 2 mΩ DC Readback Accuracy


• Voltage: 0.03% + 5 mV


• Current (high range, −3 A to +5 A): 0.2% + 0.5 mA


• Current (mid range, −1 A to +1 A): 0.1% + 0.2 mA


• Current (low range, −20 mA to +20 mA): 0.1% + 2.5 µA Ripple and Noise (20 Hz to 20 MHz)


• Voltage: 1 mV rms / 6 mV peak-to-peak


• Current: 2 mA rms Load and Line Regulation


• Voltage load regulation: 5 mV


• Current load regulation: 0.75 mA


• Voltage line regulation: 0.5 mV


• Current line regulation: 0.75 mA Transient Response


• Recovery time: < 20 µs to within 12 mV


• Voltage dip: 40 mV (< 20 µs) or 70 mV

Key Features

• Programmable output resistance for battery internal resistance emulation


• Programmable output compensation for transient response optimization


• Negative resistance programming to compensate for sense point voltage drops


• Built-in dynamic measurement system for precise current drain quantification


• Waveform capture and data logging (up to 1000 hours)


• CCDF statistical analysis


• GPIB interface for remote control and automated sequencing

Physical and Environmental Half-rack, 2U form factor: 212.8 mm W × 88.1 mm H × 435 mm D. Operating range 0–55°C, maximum 95% relative humidity, altitude to 2000 m. UL 3111-1, CSA 22.2 No. 1010.1, IEC 1010-1, EN 61010-1 compliant. EMC directive 89/336/EEC (ISM 1B or Group 1 Class B).