VISA & Tektronix

[Bill2@NGC]

After installing the SW for our Tektronix Logic Analyzer, LV can't see our Oscilloscope, and MAX crashes with MAXVISATimeoutError.  Before installing the TLA SW, I was able to see the Oscilloscope with no error.  I vaguely remember this happening a few years ago because both Tek and NI use the same name for a VISA library.  But I don't remember any details.  Can someone help me with this?  Thanks.

[smercurio_fc]

TekVISA probably overwrote NI-VISA. You should have been able to select to install TekVISA side-by-side, but I don't know if the Tektronix installation gives you that option. Try re-installing NI-VISA. Of course, I'm not sure if the Tektronix software will work with NI-VISA.... After all, Tektronix is a competitor for NI, so why would they want to make things easy on people who use NI products instead of their own?

[Bill2@NGC]

I've moved the evil Tek Visa32.dll to their Tla700 folder and the Tek Logic Analyzer seems to still work.  Then I copied a NI Visa32.dll (which may not be the right one, because I just found it in an archive).  MAX sees the Tek Scope now, but when I call the initialize vi, it gives me this, "Error -1073807346 occurred at VISA Clear" and "The given session or object reference is invalid".   Do you know what I should next?  How do I reinstall NI-VISA?  Thanks.

[JÞB]

Make sure the Tek Logic Analizer application has released the resource.

[smercurio_fc]

You can do a reinstall of NI-VISA in the same way you reinstall any application. Just re-run the installer. It should be on your DVD. If you need to get a fresh copy you can download it from the NI site. Just click on the Support button in the toolbar at the top of the web page.

[Bill2@NGC]

After deleting visa32.dll, I reran the installer, but it didn't install MAX or anything else I can see.  And it won't let me uninstall MAX because it's used by so LV, and others.  So how do I just reinstall MAX?

By the way, I'm using LV 8.5 since I'm porting old working code, and LV 2010 gave errors when I tried upgrading.  I don't have any need to use the newer 2010, so I decided to keep using 8.5.  Does using the newer MAX with 8.5 cause problems?

[smercurio_fc]

---

@prog Bill wrote:

After deleting visa32.dll, I reran the installer, but it didn't install MAX or anything else I can see.  And it won't let me uninstall MAX because it's used by so LV, and others.  So how do I just reinstall MAX?

---

You shouldn't really need to reinstall MAX. What you're really looking for is to reinstall VISA. When you said you reran the instaler are you referring to the NI-VISA installer? Did it place the VISA DLL? Wasn't there an option to perform a "repair" from the installer?

---

 By the way, I'm using LV 8.5 since I'm porting old working code, and LV 2010 gave errors when I tried upgrading.  I don't have any need to use the newer 2010, so I decided to keep using 8.5. 

---

What errors?

---

Does using the newer MAX with 8.5 cause problems?

---

I am assuming you are referring to NI-VISA 5.0.3? The Release Notes for it indicate it supports LabVIEW 8.5.

[Bill2@NGC]

I just put the LV dvd in and ran the autorun.  I didn't see any option for repair, but I wasn't looking for it.  It sounds like this is not the NI-VISA installer.  Where is the NI_VISA installer?  Thanks.

[Bill2@NGC]

I found the repair option in MAX/Software and both the scope and LA are working now.  Thanks for your help.

[JÞB]

Glad you are fixed