RXMVOLT2 Yocto MilliVolt Rx-BNC Voltmeter


Small USB module to measure small and very weak electric signals, with BNC connector. The device can convert the voltage measure to an equivalent physical measure on the fly, and includes a built-in datalogger.

SKU: RXMVOLT2 Categories: ,


The Swiss-made Yocto MilliVolt Rx-BNC Voltmeter is a high precision USB voltmeter. It allows you to measure very small voltages (down to a few dozens of microVolts, and up to 2V max) via USB, even when they are generated by extremely weak sources (very high impedance). The BNC connector makes it possible to bring the signal using a shielded coaxial cable.

Typical applications include measurement of electro-chemical reactions (e.g. pH and redox probes), low-voltage sensors (e.g. gaz sensors, etc) or Wheatstone bridges (e.g. load cells, etc). It is also possible to use this device to precisely measure the voltage drop accross a shunt to measure high currents.

The input circuit of this device uses a very low bias current amplifier (typ. 0.2 pA). The measure circuit is electrically isolated from the USB bus, which makes it possible to measure grounded voltages without risk of creating a ground loop.

For measuring less sensitive signals, you can use the variant of this product that has a rising cage connector, and which is significantly shorter.

This device can be connected directly to an Ethernet network using a YoctoHub Ethernet, to a WiFi network using a YoctoHub Wireless-g, it can even be connected to a GSM network thanks to the YoctoHub GSM.

USB cables and enclosure to be ordered separately.

Specifications for RXMVOLT2 Yocto MilliVolt Rx-BNC Voltmeter

Manufacturer Product Number – RXMVOLT2
Product name – Yocto-milliVolt-Rx-BNC
Width – 20mm
Length – 72.5mm
Weight – 16g
USB connector – micro-B
Channels – 1
Input bias current (typ.) – < 1pA
Refresh rate – 100Hz
Input impedance – > 1000GΩ
Measuring range – -1000 … +2000mV
Accuracy – 0.1%
USB bus insulation – 1kV
Sensitivity – 0.01mV
Supported Operating Systems – Windows, Linux (Intel + ARM), Mac OS X, Android
Drivers – no driver needed
API / SDK / Libraries – (USB+TCP)C++, Objective-C, C#, VB .NET, Delphi, Python, Java/Android
API / SDK / Libraries – (TCP only)Javascript, Node.js, PHP, Java
Suggested enclosure – YoctoBox-Long-Thick-Black-BNC
Made in Switzerland


Additional information

Weight 0.1 lbs
Dimensions 2.5 × 1 × 1 in


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