Keithley 2604b I-V reference

[BuzzG]

Hey guys, i am using a labview programm to take I-V measurements with keithley 2604b and when i take the reference (terminals not connected to any device ) i take a linear plot like in the picture. Does that make any sense or the labview Vi that i am using is not so good? 

Thanks a lot !!!!

 

[GerdW]

Hi BuzzG,

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@BuzzG wrote:

Does that make any sense or the labview Vi that i am using is not so good? 

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How can we judge on your LabVIEW VI when you forget to attach that VI?

On that image:

You measure ~9e-11A at 10V: that is ~90pA and related to a resistance of ~110GOhm.

What do you expect? And what does Keithley mention in the datasheets and manuals?

[BuzzG]

You have a point ! I am attaching the vi .

Thanks alot