Agilent/Keysight 66309B DC Power Supply

The Agilent/Keysight 66309B is a dual-output DC power supply engineered for mobile communications and battery-powered device testing. Each of its two independent outputs delivers 0–15 V at 0–3 A continuous, with Output 1 capable of peak current to 5 A for up to 7 ms. Combined power capability reaches 90 W.

The 66309B addresses the dynamic demands of wireless device testing - rapid current pulses, voltage transients, and simultaneous battery and charging circuit validation - while occupying only half-rack width at 2 RU height. Programming accuracy reaches ±0.05% + 10 mV for voltage and ±0.05% + 1.33 mA for current. Readback accuracy is ±0.03% + 5 mV (voltage) and ±0.2% + 0.5 mA (current above 20 mA).

Ripple and noise remain tightly controlled: 1 mV RMS and 6 mV peak-to-peak voltage; 2 mA RMS current. Transient response settles in less than 35 µs with maximum voltage droop of 70 mV. Remote sensing capability accommodates up to 4 V drop per load lead, with load regulation adjustable accordingly.

Technical Specifications

• Outputs: 2 independent channels, each 0–15 V, 0–3 A continuous; Output 1 supports 5 A peak (≤7 ms)


• Total Power: 90 W maximum


• Voltage Accuracy: ±0.05% + 10 mV (programming); ±0.03% + 5 mV (readback)


• Current Accuracy: ±0.05% + 1.33 mA (programming); ±0.2% + 0.5 mA (readback, >20 mA)


• Voltage Ripple & Noise: 1 mV RMS, 6 mV peak-to-peak


• Current Ripple: 2 mA RMS


• Transient Response: <35 µs settling; 70 mV maximum droop


• Input: 104–127 VAC, 50/60 Hz (standard); 100/120/220/230 VAC options available


• Dimensions: 212.8 × 88.1 × 435 mm (half-rack, 2 RU)


• Compliance: Installation Category II, Pollution Degree 2

Key Features

• GPIB (IEEE 488.2) interface with SCPI command language


• Remote sensing with 4 V drop tolerance per load lead


• Compact half-rack form factor eliminates separate supply requirements


• Simultaneous dual-output operation for battery and charger testing

Typical Applications

• Mobile phone and wireless device power validation


• Battery charging circuit characterization


• Rapid transient and current pulse simulation

Compatibility & Integration GPIB connectivity and SCPI compatibility enable integration into automated test systems and ATE platforms for mobile communications development and production.