There may be times through either errant button pushing that your viewing options have changed.
There are quick key buttons that can change these from on normal start up.
Depending on your imager model number:
These instruments do not offer a quick key, however, this is how you adjust these settings:
________________________________________________________________________________________________________________
For model numbers:
The quick key for these units is the left and right arrow key.
________________________________________________________________________________________________________________
For models numbers:
The quick key on these units is the up and down arrow key.
To access the IR-Fusion Function, activate the menu. Select Image, then IR-Fusion
Then use the left and right arrow keys to select PIP% or Full IR %