alternating polarity

[Jonnydv]

Hi.

  I have recently started working with the Keithley 6517A. the instrument has a feature of measuring
resistance using alternating polarity of the V-Source. I know of many VIs that can be downloaded
from the NI site witch deal with this model, Staircase sweep is an example. however I did not find one
that runs the ALT-POL sequence.

  how can I get a VI that operates this sequence?, or alter one of the existing VIs?

thanks,
Jonny

[Nick_D]

Hey Jonnydv,

If the feature exists in the manual of the instrument, you should be able to add it in manually. The manual comes with every function the instrument is capable of, and if you just open one of our examples in the example finder in labVIEW(Help->Find Examples...) If your instrument is GPIB, search for GPIB, and you should find labVIEW<->GPIB.vi and if it's serial, you should be able to find "Basic Serial Write and Read.vi" All you have to do is edit the VI, and if you really needed, make you're own subvi using these examples.

Regards,

Nick D.