Hioki LR8401-20 - Adjust Backlight Brightness; Selecting Black or White Screen Background; Enabling or Disabling the Beeper

8.2 Screen Key Operation Settings
154
See: "Key Setting Procedure" (p .152)
Backlight brightness can be selected from four levels. Lower brightness settings provide
longer battery operating time.
Backlight
Brig
htness
When the [Backlight Brightness] setting is selected, pressing
ENTER repeated cycles through the four brightness levels.
The screen background can be set to black or white.
Display Color
(Bac
kground
Color)
The beeper can be set to sound when an error occurs.
Beep Sound
(Beeper)
Adjust Backlight Brightness
Setting options:(  : default setting)
100%
, 70%, 40%, 25% (four-step brightness setting)
Selecting Black or White Screen Background
Black Back- White Back-
Setting options:(  : default setting)
Black

Make background black.
White Make background white.
Enabling or Disabling the Beeper
Setting options:(  : default setting)
On

Emit a beep sound on error messages (error
and warning displays).
Off Do not emit beep sound.
When the alarm beeper is enabled, no beep sounds when a warning or
error occurs while measuring.