can not see GPIB device in visa resouce name list

[smercurio_fc]

Now I'm confused. You initially said you saw the GPIB instrument as GPIB0::1::INST. This would mean you have a GPIB controller (a hardware component). Right?

[detech]

Yes, PCMCIA-GPIB from national instrument

[detech]

I download NI-488 version 2.7 and installed, restarted computer. Still not see GPIB device, but see it in MAX.

See attachment. I really get frastracted with this iuuse.

Thanks for help 

[JÞB]

Can you give us a screenshot of what the VISA Resource Controll drop down shows?

[smercurio_fc]

Folks, please stop posting Word documents to contain screenshots. Post the screenshots directly (NO BITMAPS!). There are people who don't use Microsoft Word out there. Yeah, hard to believe, but it's true.

As to the problem at hand: This appears to be a corrupted VISA install. MAX does not use VISA to find instruments. Sometimes deleting the visaconf.ini and letting it be recreated fixes the problem. Sometimes you have to perform a compete uninstall of VISA and then reinstall it (do not install it on top of another existing installation). In some cases you have to perform a complete uninstall of LabVIEW and all associated products and reinstall. 

[detech]

I can not do screenshot of drop down show, but it looks like:

COM1

COM3

LPT1

----------------------

Refresh

[detech]

I did not find visaconf.ini in my computer.

Here is NI program list, what should I delete and reinstall?

I can not do screenshot copy-paste directly to this massage, Doc is only thing I can do.

Thanks

[Dennis_Knutson]

The visaconf.ini file is supposed to be in C:\Documents and Settings\All Users\Application Data\National Instruments\NIvisa if you have windows xp. If you did a search of your entire pc and did not find it, then something is certainly wrong with the installation of NI-VISA. Remove NI-VISA 4.4 and reinstall.

You can easily post an image if you save it in the correct format. Paste the image into Paint and save the file as a .png. You can attach that.

[detech]

I need to tell the whole story:

DPO7104 scope is a PC. At beginning I have no problem to use my PC to controll DPO7104 through GPIB. When everything looked fine, I install labview to DPO7104 and try to run my VI in DPO7104. I had problems from then: sometime, works good, sometime showed visa resouce problem. I read a masage from NI.com, said there could be two different visas in DPO7104, they do not compitable.

So I uninstall labview from DPO7104, and went back to my PC to run DPO7104. From then, I did not see GPIB device (DPO7104) from labview vi. I uninstalled labview and its products, reinstalled again. Problem is still there......up to now.

[detech]

NI-VISA 4.4.1