Beta 961 P6 Mode D'emploi page 37

-10 Video settings
Press the "SNAP" and "RECORD" buttons to increase or decrease
the value of the video settings.
-11 Power saving function settings
From the Power Save mode, set the time desired for automatic
turn-off of the instrument in the event of prolonged lack of use. To
reactivate the display, press the button lightly and the menu will
appear on the display once again.