Problems with VISA connectivity (visadev)
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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.
4 个评论
Nicholas Estes
2021-8-2
I am getting the same error. I am a bit peeved that the MATLAB editor explicitly warns against using 'visa' instead of 'visadev', when the refactoring is empirically not as trivial as the documentation suggests.
My scripts using visa have been hanging on fclose(obj), so I had hoped changing to visadev would fix things, but it looks like they have gotten worse.
Nicholas Estes
2021-8-2
I should clarify that I am using Keysight instruments, with the latest version of IO Libraries. Keysight Connection Expert can "see" the instruments, and I am able to communicate with them using the "visa" function and fprintf, query, etc.
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
Anyone have any more ideas?
采纳的回答
Lukas Grundmann
2021-11-2
8 个投票
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.
3 个评论
Akshayaa Pandiyan
2022-7-25
I tried this and it was still the same error. Increasing the Timeout didnt help either. Any idea why this is?
Roel
2023-4-19
worked for me, thanks!
carl oros
2023-11-21
I had same issue. Worked perfectly! Thank you!!
更多回答（1 个）
Andrei
2023-10-20
1 个投票
This can be fixed in the vendor's VISA Conflict Manager utility. Refer to https://www.mathworks.com/matlabcentral/answers/1684554-why-do-i-get-an-error-with-visadev-and-visadevlist
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