Using HP34401A in LabView yields error code -1073807343

[aywl17]

I have updated the VISA Version to 5.0.2.  However, it had the same problem.

When I tried to communicate to the HP34401A in the VISA Test Panel, the same error happened.

Please help me.

Attached is some graph.

[aywl17]

I can communicate with the HP34401A with another computer.  The new computer was installed a PCI GPIB card but not the USB-GPIB-HS.  Is this error is due to the  USB-GPIB-HS? 

[Dennis_Knutson]

No. You able to communicate to the instrument per your original post. It seems to be a problem with the VISA installation.

I don't quite understand the VISA alias you are using and what is listed under the Miscellaneous VISA Resources? I don't that there should be a miscellaneous listing at all.

[Dennis_Knutson]

Also, the fact that you do not have a visaconf.ini file on your pc points to a software corruption. This is the file that is read to get a list of valid VISA resources. What is your OS? On Vista, the file is in Users>All Users>National Instruments. I think windows 7 uses the same location. For older OS's some installations of VISA used a folder called VXIpnp (I believe that's correct. It was VXI something). If you ever find it, try deleting it and going into MAX and do a refresh.

[JÞB]

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@aywl17 wrote:

I can communicate with the HP34401A with another computer.  The new computer was installed a PCI GPIB card but not the USB-GPIB-HS.  Is this error is due to the  USB-GPIB-HS? 

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Its Possible!  ngarneski just found a simillar issue in this thread.  He was able to solve his problem by connecting the USB-GPIB to his agilent equipment through a GPIB cable.  - I suspect there is a mechanical interference differance between the USB adaptor and the GPIB connector on the Agilient equipment.

There is an intersting proviso in the Hardware Guide"at pg 1-3 pp2

"The GBIP-USB adaptor connects to MOST GBIP devices without requiring a GPIB cable.  " (emphasis added)

[Dennis_Knutson]

But in that case, no instrument was detected. In this case, MAX finds the instrument and communication is fine in MAX. It's only when VISA is used that there is a problem.

[JÞB]

Ah- I missed that.

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@Dennis Knutson wrote:

But in that case, no instrument was detected. In this case, MAX finds the instrument and communication is fine in MAX. It's only when VISA is used that there is a problem.

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Ahhh- Missed this too-  The OP is using LabVIEW 8.20-  No LabVIEW 8.20 support in modern VISA versions

[Dennis_Knutson]

Good catch. Does not explain why VISA 4.3 does not work.

Perhaps VISA 4.6?

[aywl17]

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@Jeff Bohrer wrote:

Ah- I missed that.

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@Dennis Knutson wrote:

But in that case, no instrument was detected. In this case, MAX finds the instrument and communication is fine in MAX. It's only when VISA is used that there is a problem.

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Ahhh- Missed this too-  The OP is using LabVIEW 8.20-  No LabVIEW 8.20 support in modern VISA versions

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What is the meaning of OP?  Does it mean that LabVIEW 8.2.1 do not support the VISA 5.0.2?

[Dennis_Knutson]

OP is original poster - you and VISA 5.0 does not support 8.2. Sorry for not picking that up sooner.