LabVIEW example program to acquire data from 4285A LCR meter using 82357B GPIB

[newa123]

Hi

I would greatly appreciate if anybody could help me out in getting a labview example program to acquire data from 4285 LCR Precision Meter using 82357B GPIB-USB interface. My computer (XP) can talk with the meter through Connection Expert from Agilent that came with the interface. In particular, I need to acquire Cp-Rp values at ten frequencies from the meter display. Thank a lot in advance,

Newa123 

[Dennis_Knutson]

If you go to Tools>Instrumentation>Find Instrument Drivers, you can do a sarch and if you had done that, you would end up here. Download the driver you want. You;ll have to configure MAX to use your Agilent card. This could be as simple as setting the tulip passport. You can also search the boards for 82357B.

[newa123]

Thanks for your prompt response.

I have used Agilent Automation Ready CD, does this mean the driver that you mentioned is already installed, or I need to install separately?

Do you have an example program because I am trying to learn this thing.

I would grealty appreciate if you could give me directions in steps.

Looking forward to hearing from you asap.

[Dennis_Knutson]

I have no idea what is on the Agilent CD but I kind of doubt it has the driver I linked. An instrument driver is just a LabVIEW (usually) program that makes communication easier. You can find out more about instrument drivers by reading the links under the 'Learn' subject at the Instrument Driver Network. When you install the driver correctly, function will be placed on your Instrument Control>Instrument Driver palette. You access these just like any other LabVIEW function. I haven't downloaded the driver but there should be at least one example that demonstrates how to use the various functions that are in the driver.

[newa123]

Thanks. I will give a try. If you happen to have the example please let me know.

[TV_Enable]

Hi newa123,

Have you been able to find the 4285A Instrument Driver?  If not, you can download it here.  When you download it, make sure you copy the entire folder into the instr.lib folder.  After restarting LabVIEW, you will see the proper VIs in your Instrument Drivers subpalette.  You will have a few nice example programs that are included in the instrument driver download.  To access them, go to Help>>Find Examples and type in "instrument" in the keyword box on the search tab.  There is also a very helpful Knowledge Base article that shows how to use your 82357B device in LabVIEW and MAX.  If you have any more questions on this issue, please let us know.

Have a great day!

Todd V.

[newa123]

Hi Dennis Thanks for your help. Most of the things are now working. Now, I do not see Cp and Rp values for all 10 frequency points, only 8, why? I modified HP_4284aLCR.vi to suit my requirements, but HP_4284aLCR.vi does the same thing too. Your help is grealty appreciated at this point of time.

[TV_Enable]

Hi newa123,

How are you choosing your frequency points?  Which frequency 2 frequency points do not have Cp and Rp values?  It is possible that this is a windowing issue and that the end points are being excluded.  I look forward to hearing back from you soon.

Regards,

Todd V.

[newa123]

Hi Todd Any 8 first frequencies in increasing order can be acquired. If there are 10 then the last two are not displayed in Cp Rp table. But, all 10 are still displayed on meter display. Thanks. Hoping to hear from you soon. Newa

[TV_Enable]

Hi newa,

Can you attach an image (jpeg or bmp) of your front panel so I can take a better look at it?  Thanks!

Regards,

Todd V.