Problems with VISA connectivity (visadev)

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Eduardo Muller 2021-7-5

6
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/872388-problems-with-visa-connectivity-visadev

评论： carl oros 2023-11-21

在 MATLAB Online 中打开

Using the function

visadev('TCPIP0::127.0.0.1::inst0::INSTR')

Gives the error

Unable to get VISA installation information from shared library.

And

visadevlist

returns

Unable to find any VISA resources during the specified timeout period. Open the vendor's control software to search for available

VISA resources.

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Nicolas Garcia 2021-8-3

I am also getting this error when connecting to Keysight instruments. It is particularly frustrating because there appears to be no change in the hardware or connectivity setup parameters. I didn't run into this issue using the original 'visa'

Zahra Vaziri 2022-10-11

I'm having the same problem! @Lukas Grundmann answer did not help...

Anyone have any more ideas?

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回答（2 个）

Lukas Grundmann 2021-11-2

6
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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/872388-problems-with-visa-connectivity-visadev#answer_822110

Hello,

I had the exact same problem and fixed it as follows:

Open your Keysight Connection Expert
In the top right hand corner, click the little gear symbol to open the settings dialogue
Go to "Tools"
Got to "VISA Conflict Manager"
In the tab "General VISA Settings", no implmentations were enabled when I first opened it. I have multiple implementations installed and now enabled "Keysight VISA" and "Keysight VISA.NET". Also, I selected them as the "Preferred Implementation".
Press "Apply" and "OK"

After this, the

visadev

command worked again for me.