EXFO IQS-1500 Power Meters for IQS-500/600 - Manual (Page 26)

Getting Started with Your Power Meters
18 IQS-1100/IQS-1500
Exiting the Application
Exiting the Application
Closing any application that is not currently being used helps freeing
system memory.
To close the application from the main window:
Click
in the top right corner of the main window.
OR
Click the Exit button located at the bottom of the function bar.
To close all currently running applications:
From IQS Manager, click Close All Applications.