4 wire resistance

[ALSPI]

I need to check the resistance on a joint weld. I am using a PXI system running in LabView. I need to add this test to the exsisting program.
1. Use a 4 wire resistance meter such as an HP 34420A Nano0ohmeter.
2. Put the meter on 4 wire resistance measurement mode and set to the most
sensitive scale.
3. Connect the current injection leads to heater pins 1 and 7.
4. Connect the voltage measurement leads to heater pins 8 and C1.
5. Measure the resistance.
Any suggestions???

[waldemar.hersacher]

Here you find an instrument driver for your HP 34420A.

Since I do not know the instrument itself I don't know if the connections will be ok.

Waldemar

Message Edited by Support on 04-24-2007 10:47 AM

[Spencer S.]

Greetings,

If you plan to use GPIB to control an HP 34420A, using the instrument driver linked by Waldemar is definitely the best method of adding this operation to you application. Another option is to add one of National Instruments DMMs to your system. Below is a link to this product page:

Digital Multimeter (DMM) Devices

Good luck with your application.

Spencer S.