Agilent/Keysight 66319D DC Power Supply

The Keysight 66319D is a dual-output DC power supply engineered for mobile communications testing, battery emulation, and charger circuit validation. This half-rack instrument consolidates two independent outputs

Output 1 rated 0–15 V / 0–3 A (5 A peak for up to 7 ms) and Output 2 rated 0–12 V / 0–1.5 A (2.5 A peak for up to 1 ms) - reducing the need for multiple power sources in R&D and production environments. The 66319D delivers precise voltage and current programming with 0.05% + 10 mV accuracy and equally rigorous readback measurement down to ±0.03% + 5 mV on voltage.

Current measurement scales from microampere-level sensitivity (0.1% + 2.5 µA in the ±20 mA range) to full-scale accuracy (0.2% + 0.5 mA across ±3 A to +5 A). Transient response is fast - under 20 µs for 40 mV steps and under 6 ms settling time from zero to rated voltage (2 ms in fast mode). Output ripple and noise remain tight at 1 mV rms / 6 mV peak-peak across 20 Hz to 20 MHz, with load and line regulation at 5 mV and 0.5 mV respectively.

Integrated battery emulation with adjustable internal resistance enables realistic power condition simulation essential for battery life determination and failure identification. The built-in digital voltmeter (DVM) and dynamic measurement system quantify current drain across device operating modes. GPIB and SCPI interfaces enable remote control and integration into automated test systems.

Technical Specifications

• Output 1: 0–15 V, 0–3 A continuous (5 A peak, 7 ms max)


• Output 2: 0–12 V, 0–1.5 A continuous (2.5 A peak, 1 ms max)


• Programming Accuracy: 0.05% + 10 mV (voltage), 0.05% + 1.33 mA (current), 0.5% + 2 mΩ (resistance)


• Readback Accuracy: 0.03% + 5 mV (voltage); current varies by range - 0.1% + 2.5 µA (±20 mA), 0.1% + 0.2 mA (±1 A), 0.2% + 0.5 mA (−3 A to +5 A)


• Transient Response: <20 µs (40 mV drop), <200 µs rise/fall time (10/90%), <6 ms settling (2 ms fast mode)


• Ripple/Noise: 1 mV rms / 6 mV peak-peak (voltage, 20 Hz–20 MHz); 2 mA rms (current)


• Load Regulation: 5 mV (voltage), 0.75 mA (current); Line Regulation: 0.5 mV (voltage), 0.75 mA (current)


• Operating Temperature: 0–55°C; Humidity: 95% max; Altitude: 2000 m max


• Form Factor: 1/2 RU width × 2 RU height; 212.8 × 88.1 × 435 mm; 9.7 kg

Key Features

• Battery emulation with internal resistance modeling


• Integrated DVM for independent voltage monitoring


• Dynamic measurement system for multi-mode current drain analysis


• GPIB and SCPI command support


• VXI plug&play drivers available

Typical Applications

• Mobile device battery and charger circuit testing


• Battery life simulation and validation


• Power supply transient response characterization


• Device failure mode identification under realistic power conditions

Compatibility & Integration Keysight 14565B Device Characterization Software provides data logging (up to 1000 hours), CCDF statistical analysis, and waveform capture for comprehensive battery performance and reliability assessment.