Vivitar DVR 850W Owner's Manual page 21

icons:
60 Sec/ 180 Sec/ Disable
Press the OK button to confirm, save your choice and exit to
the Setup mode submenu.
The camcorder will automatically power off if inactive for the
time selected.
Buzzer – activate or inactivate the beep sound that is emitted
when pressing a button
Press the OK button.
Press the Right/Left button to highlight and select one of the
icons:
Enable/ Disable
Press the OK button to confirm, save your choice and exit to
the Setup mode submenu.
If Disable is selected the camcorder will be silent and not emit
beeps when buttons are pressed.
Brightness – adjust the brightness of the LCD screen
Press the OK button.
Press the Right/Left button to select the brightness option:
-2.0 (dark) / -1.0 / 0.0 / 1.0 / 2.0 (bright)
The LCD screen will automatically adjust as the option is
selected.
Press the OK button to confirm, save your choice and exit to
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