EXFO PSO-100 Series Optical Sampling Oscilloscopes - Manual (Page 25)

Getting Started with Your Optical Sampling Oscilloscope
Optical Sampling Oscilloscope 17
Installing the Matlab Runtime, USB Drivers and Optical Sampling Oscilloscope Software
14. The installation of the Optical Sampling Oscilloscope is now complete,
click Finish.
If any version of Matlab is installed on your computer, the system path must
be adjusted to prioritize the Runtime over the Matlab software.
Note: If you have an old version of the Optical Sampling Oscilloscope application
that was compiled with an old version of Matlab, and you want to update
to the EXFO application, you need to uninstall the older versions first, then
install a new version of MCR (follow the procedure above).
I
MPORTANT
You must remove the HKEY_LOCAL_MACHINE\SOFTWARE\MATLAB
registry key after uninstalling the older versions to make sure that
the new version is installed correctly.