3 ms·
4 wire resistive measurements to cancel out the resistivity of the probes is a standard practice[1]. [1] https://www.ni.com/docs/en-US/bundle/ni-daqmx/page/mea
by ChuckMcM 3y ago
4 wire resistive measurements to cancel out the resistivity of the probes is a standard practice[1].
[1] https://www.ni.com/docs/en-US/bundle/ni-daqmx/page/measfunds/4wireres.html https://www.ni.com/docs/en-US/bundle/ni-daqmx/page/measfunds...
- sudosysgen 3y agoThe problem isn't the resistivity of the probes, it's that the probes may not be connected to the same crystal.
- tlb 3y agoI understand the 4 wire idea, but the two inner wires are still farther apart than an individual crystal might be. So a material composed of 100 um superconducting crystals in a resistive bulk medium would appear resistive to probes that are 1 mm apart.
- ChuckMcM 3y agoGot it. Building a 4 wire 100um square probe would be doable certainly but not off the shelf.