MATLAB: Am I unable to use Tektronix Visa with the Instrument Control Toolbox 2.9 (R2009b) after installing the Agilent IO Libraries

Instrument Control Toolbox

I have installed TekVISA on my PC. Following this, I installed the Agilent IO Libraries. During the installation of the Agilent IO Libraries, TekVISA was recognized as the primary VISA installation and an option was presented to make Agilent VISA the primary VISA installation on the system. I checked 'yes.'
Subsequently, when I started MATLAB and examined my VISA resources using INSTRHWINFO, MATLAB could only see Agilent VISA and not TekVisa:
instrhwinfo('visa')
ans =
InstalledAdaptors: {'agilent'}
JarFileVersion: 'Version 2.9.0'

Best Answer

Agilent VISA can only be installed as secondary VISA if it is installed after TekVISA. To install and use Agilent VISA after TekVISA has been installed on your system, install Agilent VISA as the secondary VISA.