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Tom-ysu
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LCR meter control

I have Agilent E4980A LCR meter. Does anyone have experience using this for CV measurements - or any LabView software for this type of measurements?
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Dennis_Knutson
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Re: LCR meter control

If you have LabVIEW 8.x, just go to the Instrument Driver Network and do a search for 4980. There's a driver available.
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chris754
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Re: LCR meter control

Hi,

 

I am trying to control the agilent E4980A LCR meter but I am having some trouble. I have downloaded the drivers and they seem to work OK. My problem arises when I try to run a sweep of say frequency. The labview program never seems to run the all the frequencies, just one. I am trying to dump everything into a text file with frequency, dc bias, dc source, primary parameter, and secondary parameter all stored in the file. Is there any guidance I could get? Thanks!

 

-Chris

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Dennis_Knutson
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Re: LCR meter control

If your program is trying to do a sweep and it's not working correctly, you need to post your VI. Can't see what is wrong without looking at the code.
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chris754
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Re: LCR meter control

Sorry! I attached the file. I know the list band is not set up correctly, but I was just trying to get it working. Also, does the list band actually limit the output? or just tell you if the output was not in the specified range? Thanks!
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Dennis_Knutson
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Re: LCR meter control

Have you run the example called Agilent E4980 Read Measurement List Sweep? Open the exaple finder and Browse to Hardware Input and Output>Instrument Drivers>LabVIEW Plug and Play.
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chris754
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Re: LCR meter control

Yes, I have. It will set-up the list just fine. All the frequencies get stored into the list, but it will not then run through the list. It doesn't even look at it. It always runs at 1KHz. How do I make it run through the list?
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Dennis_Knutson
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Re: LCR meter control

It's been a long time since I did anything with the meter and I don't have one anymore. Once the sweep points and list bands are loaded, can you perform the test manually. For that matter, if you do everything manually, does the test run like you expect?

 

Instrument specific questions might get an answer here from someone with current experience but you should also check with Agilent, especially if you can't do the test manually.

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chris754
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Re: LCR meter control

Yes I can do it manually. Once I set the list up with the program I can make it run through the list by doing it manually. However, I would like to do this via labview if possible. Thanks for you help.

 

-Chris

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NathanT
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Re: LCR meter control

Hello Chris,

       One option is for you to look at the programming manual for the instrument and see what command or series of commands need to be sent to make the instrument go through the list.  You can then compare those commands to what is being sent by the LabVIEW Instrument Driver.  If they differ, you can create a VI that sends the correct commands and see if that takes care of the issue.  If that does resolve the issue, you can explain your fix and then NI can update the released instrument driver.

 

Cheers,

 

NathanT