HP / Agilent 66321D DC Source 0-15V 0-3A

The HP/Agilent 66321D is a DC source purpose-built for testing battery-powered wireless communication devices. It delivers 0–15 V and 0–3 A continuous output with 5 A peak current capability (up to 7 ms), making it ideal for characterizing current drain across device operating modes. The unit combines a precision power source with an integrated digital voltmeter and dynamic measurement system, enabling accurate battery behavior simulation and transient load response analysis in production test environments.

Technical Specifications Output Ratings

Voltage: 0–15 V

Continuous current: 0–3 A

Peak current (up to 7 ms): 5 A

Power: 45 W Programming Accuracy (25 °C ±5 °C)

Voltage: ±0.05% of setting + 10 mV

Current: ±0.05% of setting + 1.33 mA DC Measurement Accuracy (25 °C ±5 °C)

Voltage readback: ±0.03% + 5 mV

Current readback: ±0.2% + 0.5 mA (−3 A to +5 A); ±0.1% + 0.2 mA (−1 A to +1 A); ±0.1% + 2.5 µA (−20 mA to +20 mA) Transient Response and Regulation

Transient response time: < 20 µs

Transient voltage drop: < 40 mV

Load regulation: 5 mV voltage, 0.75 mA current

Line regulation: 0.5 mV voltage, 0.75 mA current Ripple and Noise (20 Hz–20 MHz)

Voltage: 1 mV rms, 6 mV peak-to-peak

Current: 2 mA rms

Key Features

Output resistance programming from −0.04 Ω to 1 Ω simulates internal battery resistance (Ni-Cad, Ni-MH, Li-Ion, Li-Polymer)

Negative resistance programming compensates for wiring voltage drops in test fixtures

Dynamic measurement system captures current drain across talk, active, standby, and sleep modes

4096-point buffer with 15 µs sampling interval

GPIB interface for automated test integration

Typical Applications

Current drain characterization of mobile phones, PDAs, and portable wireless devices

Battery life validation for Bluetooth and Wireless LAN products

Transient load testing of cellular handsets and communication modules

Production-volume battery emulation and power delivery analysis

Compatibility & Integration Supports testing of 3G, cdma2000, WCDMA, CDMA, TDMA, GSM, PCS, DECT, TETRA, PHS, NADC, Bluetooth, and Wireless LAN devices. Compatible with Keysight 14565B software for battery drain analysis.