Is there a function that returns all instrument VISA resources as a table?

Is there a function that returns all instrument VISA resources as a table?

Answer 1

[MathWorks Support Team]

The visadevlist function, available in MATLAB R2021a and newer releases, returns available VISA resources as a table.

The attached visalist.m convenience function uses the legacy instrhwinfo command to return a table output similar to the new visadevlist function. visalist is expected to work with MATLAB R2016b or newer releases.

By default, visalist will return the VISA resource names as provided by the installed vendors' VISA libraries, without any additional instrument information.

>> visalist

  8×2 table

                         ResourceName                     Adaptor  
         ____________________________________________    __________

    1    "ASRL3::INSTR"                                  "ni"      
    2    "ASRL5::INSTR"                                  "ni"      
    3    "ASRL6::INSTR"                                  "ni"      
    4    "ASRL7::INSTR"                                  "ni"      
    5    "ASRL8::INSTR"                                  "ni"      
    6    "TCPIP0::127.0.0.1::5000::SOCKET"               "keysight"
    7    "USB0::0x2A8D::0x1797::CN58236453::0::INSTR"    "keysight"
    8    "USB0::0x2A8D::0x1797::CN58236453::INSTR"       "ni"      

To also output instrument auto-identification information (instrument manufacturer/vendor, model, and serial number), as a response to *IDN? command, use the following syntax:

>> visalist(true)

ans =

  8×5 table

                         ResourceName                            Vendor                 Model        SerialNumber     Adaptor  
         ____________________________________________    _______________________    _____________    ____________    __________

    1    "ASRL3::INSTR"                                  ""                         ""               ""              "ni"      
    2    "ASRL5::INSTR"                                  ""                         ""               ""              "ni"      
    3    "ASRL6::INSTR"                                  ""                         ""               ""              "ni"      
    4    "ASRL7::INSTR"                                  ""                         ""               ""              "ni"      
    5    "ASRL8::INSTR"                                  ""                         ""               ""              "ni"      
    6    "TCPIP0::127.0.0.1::5000::SOCKET"               ""                         ""               ""              "keysight"
    7    "USB0::0x2A8D::0x1797::CN58236453::0::INSTR"    "KEYSIGHT TECHNOLOGIES"    "DSO-X 1102G"    "CN58236453"    "keysight"
    8    "USB0::0x2A8D::0x1797::CN58236453::INSTR"       "KEYSIGHT TECHNOLOGIES"    "DSO-X 1102G"    "CN58236453"    "ni"      

Note that:

• If the instrument does not respond to *IDN? command, or if visa cannot connect to the instrument, the auto-identification information will be empty.
• If the hardware configuration changes (for example, if you connect/disconnect instruments) execute instrreset before visalist to get updated information.