Joulescope JS320 Precision DC Energy Analyzer

Design better, more energy-efficient products. The Joulescope JS320 is the third-generation, highly affordable, and easy-to-use precision measurement instrument. Engineered to provide unprecedented visibility into your device's power consumption, it allows you to measure current from nanoamps to amps while seamlessly and simultaneously tracking voltage, power, energy, and charge.

The Challenge of IoT Power Measurement

Modern battery-powered and IoT devices have a massive dynamic current range, which makes accurate measurement incredibly difficult. When "sleeping," these devices consume mere nanoamps (nA) or microamps (µA), but when active, they can draw milliamps (mA) or even amps (A).

The Joulescope Solution

The JS320 solves this challenge by combining high-speed sampling and rapid dynamic current range switching. This provides highly accurate and seamless current and energy measurements, even for devices with rapidly varying power profiles.

Because of its unprecedented accuracy and low cost, every engineer on the team can now have an analyzer on their desk to measure energy consumption during development. This provides rapid, actionable feedback on exactly how hardware and software changes affect overall product battery life.

Key Specifications

• Voltage Range: ±15V

• Current Range: ±3A continuous (handles up to 10A pulses)

• Extreme Precision: 0.1 nA resolution (equivalent to an impressive 36-bits of dynamic range)

• High-Speed Sampling: 200 kHz bandwidth with 1 million samples per second (1 Msps), 24-bit, simultaneous current and voltage

• Seamless Dynamic Measurement: Rapid 1 μs switching between shunt resistors

• Enwavify™ Technology: Ensures consistent, highly accurate measurements even during drastic current range changes

• Comprehensive Computing: Automatically computes power, energy, and charge

• Safety & Integrity: Sensor ports are electrically isolated from the USB connection

• Cross-Platform Support: Fully compatible with Microsoft® Windows®, Apple® macOS®, and Linux®

What's Included in the Kit?

Everything you need to get started right out of the box:

• Joulescope JS320 instrument (comes with binding post front panel installed)

• 1.5m (5 ft) USB-C to USB-A cable

• USB-A to USB-C adapter

• 25 cm GPIO cable

• Allen wrench (for easily swapping front panels)

• Quick Start Guide

• Factory calibration certificate

• Joulescope sticker

• Custom carrying case

Backwards Compatibility: The JS320 is fully compatible with JS220 front panels and accessories. You may also be interested in adding the JS220 Evaluation Kit 1.

Calibration & Software

Ready to Measure: All Joulescopes arrive fully calibrated from the factory.

Need Official Certification? We offer an optional ISO 17025:2017 NIST-traceable calibration, which includes rigorous additional testing performed by Tra-Cal, an ANAB-accredited calibration laboratory

Download Joulescope JS320 Datasheet / user manual