Can I Use My DMM in 2-Wire Mode When It Is Connected in 4-Wire Mode?

Updated Aug 13, 2021

Reported In

Hardware

  • Digital Multimeter Device
  • PXI-4065
  • USB-4065
  • PCI-4065
  • PCIe-4065

Issue Details

I want to use my DMM to measure multiple devices, some of which use a 4-wire measurement while others use a 2-wire measurement.  Can I leave the AI Sense leads (used in 4-wire mode) connected to my DUT when I perform a 2-wire resistance measurement?
 

Solution

You can leave the Sense Leads connected for NI DMM models other than the 4065. Leaving the sense leads connected while taking a 2-wire measurement with the 4065 will result in incorrect measurements.

Additional Information