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I am trying to connect to a National Instruments GPIB device using VISA as follows:
gpibObj = visa('ni','gpib::20::INSTR');
When I do so, I get the following error message:
??? Error using ==> visa.visa at 241
Unable to create VISA object. The required drivers may not be installed properly.
Type 'instrhelp visa' for more information.
I am using the following NI driver:
NI-488.2 2.7 - Real-Time OS, Windows 2000/Vista x64/Vista x86/XP
In order to be able to access your GPIB device using VISA you need to use a supported driver, which in this case would be:
National Instruments NI-VISA version 3.0 (or higher)
Instrument Control Toolbox - Supported Hardware - VISA
For more information on VISA see:
If for some reason you cannot upgrade your VISA driver, then you can also access your GPIB device directly from MATLAB as it possesses this capability. For more information see:
Controlling Instruments Using GPIB