07-13-2011 02:37 PM
Hi
I have access in the lab to a Keithley 6517B electrometer, and labview 2009, and i need create an interface with labview to measure current I, voltage V or resistance, at the same time i need use the 6517B electrometer as a source of voltage or current to evaluate characteristics before mentioned, i have the necesary hardware ( Keithley GPIB KUSB-488A).
I see the examples included in the driver and in the website of keithley, but non include the output of voltage/current example. I don't have much experience, but i am able to implement what is necessary to measure, but not for configure it as voltage/current source.
The idea is to be able to measure: as example, volume resistivity or the current in prescence of a voltage (6517 as a source) and view a graph and save the data generated.
It will be great if some one can help.
Thanks a lot for the time.
Greetings.
Ivan C.
07-29-2011 09:52 AM
Hi, I have been searching about it, but I haven´t find anything like that already made.
What you can do is just add the VISA VIs with the specific GPIB commands to make it.
You can open a one of the VIs (instructions) of the driver to se how are those done.
I also asked in the in keithley, but have not get a possitive answer.
I am sorry, about it, I will keep looking but I feel that the best way it is going to be to make the VIs yourself.
08-03-2011 09:43 AM
Hi
Thanks for the information, effectively, GPIB commands are needed. These commands can be found in the user manual of the keithley 6517 electrometrer.
If someone wants to VIs that I made to get an idea, I can make them available.
08-04-2011 09:09 AM
02-13-2012 04:47 PM - edited 02-13-2012 04:48 PM
Hi.
This is my example for use the keithley 6517B electrometer with V-source and Zero correct.
The program only measure current.
Greetings.
02-13-2012 05:12 PM
Hi ivkicin,
You can also upload this VI to decibel.ni.com so it becomes easier to be found!!!
Regards,
02-14-2012 02:46 AM
The problem you have is solvable by changing the dataformat. And reading the buffer instead of a single value.
It has been a long time ago and maybe some lower level vi's are missin but this is a library I used for that.
Look at the tree vi and play with it. This software is not perfect and not yet complete but see it as a first step.
07-03-2012 12:33 PM
I have a Keithley 6517B, and ran the MeaswithZCorr.vi without any modification. The VI seems to execute fine and even sets the Vsource output to the correct value (tested with a DMM). However, of the two columns of data written to the spreadsheet file, the first one associated with the measured current is not changing and is fixed at
9.910000E+37 (see the following sample readout). The second column represents the time stamp values and seems to be working fine.
9.910000E+37 0.289109
9.910000E+37 0.343702
9.910000E+37 0.398109
9.910000E+37 0.452483
9.910000E+37 0.506823
9.910000E+37 0.561262
9.910000E+37 0.615847
9.910000E+37 0.670349
Has anyone else encountered this problem?
Any help would be appreciated.
07-03-2012 04:13 PM
07-03-2012 04:32 PM
I don't think it is measuring with the VI. However, when I set the meter to local to do
Application>Dev-char>Diode>Leakage Curr [one of the standard preprogrammed applications]
and trigger it manually then it does measure current properly.
Regards,
VGH