keithley 6517A polarity. Help to modify the existing Vi

[pav1101]

Hello All,

I would like to use the "Square Wave Sweep.vi" (.llb can be downloaded from Keithley website. Link: http://www.keithley.com/data?asset=4098) that applies voltage of alternating polarity and measures current on Keithley 6517A, but I would need a slight modification to it that I have difficulty of figuring out by myself. If you have any idea, please share.

What I would need from the final Vi is that it captures multiple points of voltage and current with the user-defined interval in the same "High Level" and "Low Level" swings (please see the Vi in the above link). This functionality is similar to the one of the "Capacitor Leakage>B13.vi", which can be found in the same .llb. The later Vi can only collect multiple points at one voltage, but I would need to alternate voltage after collecting user defined number of points as in the former Vi.

Please help. Thank you!!!

[G-Money]

pav1101-

            Unfortunately it looks like that code was written in LabVIEW 4.0.2 and I can't open it in any of my versions (the lowest I have is 7.1). Could you post a screenshot of the code and what you are wanting it to do? Thanks!!

[pav1101]

Dear G-Money,

Thank you for your willingness to help. Please see the attache PDF file with the explanations.

I have been trying to modify the input sequence of the Format Values commands, but so far have not succeeded.

Thanks again!

pav1101

[G-Money]

pav1101-

          I am still confused on what you are wanting the code to do. The areas that you have circled are some sort of initiation sequence that builds a string and then sends that string to the Keithley machine. If you want to measure voltage and current, you will need to know the commands to do such (normall found in product manuals but you might need to call Keithley's programmers to get the information). Either way you will use case structures and flat sequences to line it up how you want it to run. I think it would benefit you greatly if you used Highlight Execution and watch to code as it runs to better understand whats going on. Good Luck!!