4-probe measurement using keithley meters

[ainat]

The code is on 4-probe measurement using the keithley 2400 as the current source and measuring the voltage using Keithley 2000.

Whenever I run the code, i am getting only partial data. It seems like the 2400 is unable to sweep current.

I am attaching the code.

Please help!

[Todd_Lesher]

I remember running current-sweeps with a 2400. I don't have one, anymore, or my old drivers - but if you save your settings as default values, that will help someone help you.

One thing to try:

Collect all the 2400 SCPI commands with the VISA spy, then walk through the programming manual to understand what they do.

[ainat]

I tried using SCPI commands, but it seems its getting wrong somewhere.

So, I used the keithely vi's to implement my code.

Can someone tell me whats excatly wrong with the code. I attached previously. I feel my logical flow is correct.

Please help!

[Todd_Lesher]

If you don't find someone who can help: the next step is to look at all the SCPI commands the Keithley VIs send. Walking through them may help you understand the problem.

A control label says: "Source Mode 2400  (0: Current)", but the enum value "0" is "Voltage". Probably fine, but shows the attention to detail in some of the VIs. Details that I have only learned by looking at every SCPI command the VIs send.

What do you mean when you say you're only getting partial data? Are you setting the voltage high enough that the current clamps have room to operate?