Keysight 66321D Mobile Communications DC Source

Keysight 66321D – Mobile Communications DC Source with Battery Emulation & DVM

Keysight 66321D Mobile Communications DC Source specifically designed for testing battery-powered and mobile wireless devices. It integrates battery emulation capability with a built-in digital voltmeter (DVM), enabling precise sourcing and measurement in dynamic load conditions.

Featuring ultra-fast transient response (<20 µs) and programmable output resistance, the 66321D accurately simulates real battery behavior. This minimizes voltage drops caused by rapid current changes, helping prevent DUT resets or shutdowns during critical test sequences.

Key Features & Benefits

• Battery Emulation Capability
  Simulates the internal resistance of batteries or battery packs, allowing engineers to characterize current drain, power consumption, and battery life under real operating conditions.

• Exceptional Transient Response
  Only 40 mV voltage drop with <20 µs response time, ensuring stable DUT operation during sudden load transitions.

• High-Accuracy Integrated Measurement
  Built-in DVM provides precise voltage and current measurements, from microamp to ampere ranges.

• Optimized for Mobile & Wireless Testing
  Ideal for smartphones, RF modules, IoT devices, wearables, and next-generation wireless products.

Technical Specifications

Output Ratings

• Voltage: 0 to 15 V

• Current: 0 to 3 A

• Peak current: 5 A (up to 7 ms)

Programming Accuracy (25 °C ±5 °C)

• Voltage: ±10 mV

• Current: ±1.33 mA

DC Readback Accuracy

• Voltage: 0.03% + 5 mV

• Current:

  • −3 A to +5 A: 0.2% + 0.5 mA

  • −1 A to +1 A: 0.1% + 0.2 mA

  • −20 mA to +20 mA: 0.1% + 2.5 µA

Transient Response

• 40 mV drop, <20 µs

Typical Applications

• R&D and design validation of mobile devices

• Battery current profiling and power optimization

• Testing wireless modules, IoT and battery-powered systems

• Production testing of mobile communication products

Important Notice (EU Customers)

This product is no longer available in the EU due to non-compliance with RoHS Directive 2011/65/EU.
Keysight will continue to provide service and support through the end of the worldwide support lifecycle.