Joulescope Comparison

The JS320 is the third-generation Joulescope instrument. It measures current, voltage, power, energy, and charge. Like the first-generation JS110 and second-generation JS220, the JS320 features an autoranging shunt ammeter with an impressive dynamic range, a perfect match for characterizing and optimizing modern electronics. The JS320 offers improved accuracy compared to the JS220, especially for systems with lower maximum currents.

Summary

Feature JS320 JS220 JS110
Bandwidth (kHz) 200 300 250
ADC bits 24 16 14
Enwavify™ smooth range switching v2 v1 -
General Purpose Inputs 4 4 2
General Purpose Outputs 2 2 2
Trigger In/Out 1 1 0
Soft Fuse ✓ ✓ -
Swappable front panel ✓ ✓ ✓
Open-source C driver ✓ ✓ -
Open-source python driver ✓ ✓ ✓
Python scripting ✓ ✓ ✓
node.js scripting ✓ ✓ -
Host OS support Windows, macOS, Linux Windows, macOS, Linux Windows, macOS, Linux

Current

Feature JS320 JS220 JS110 Units
Bandwidth 200 300 250 kHz
Dynamic Range 216 208 196 dB
ADC sampling rate 1000 2000 2000 kHz
ADC type Delta-Sigma SAR SAR
ADC bit depth 24 16 14 bits
ADC effective number of bits 16 15.1 12 ENOB
Output sample rate (max) 1000 1000 2000 ksps
Maximum measurement (sustained) ±3 ±3 -1.5 to 3 A
Maximum measurement (pulse) ±10 ±10 -1.5 to 10 A
Resolution (typical) 0.1 0.5 1.5 nA
Shunt resistor burden voltage (max) 20 20 20 mV
Shunt switching time (max) 1.0 1.0 1.2 µs
Range switch settle time (max) 0.0 0.0 5.0 µs

Voltage

Feature JS320 JS220 JS110 Units
Bandwidth 200 300 250 kHz
Dynamic Range 107 107 93 dB
ADC sampling rate 1000 2000 2000 kHz
ADC type Delta-Sigma SAR SAR
ADC bit depth 24 16 14 bits
ADC effective number of bits 16 15.1 12 ENOB
Output sample rate (max) 1000 1000 2000 ksps
Maximum measurement ±15 ±15 -1 to +15 V