Class 1 Sound Level Meter NL-53 / Class 2 Sound Level Meter NL-43
with Extended Function Program NX-43EX Instruction Manual Operation Guide

10.5 When taking measurements in a dark place

When you touch the screen or press a key after an automatic brightness adjustment or a “screen off” operation, the backlight of the LCD screen turns on, making it easier to see the display in dark environments.
If you want to turn off the backlight while it is on, touch [Light Off] on the menu ring.

Set the brightness and lighting time of the backlight as follows.

1Touch [Menu] on the measurement screen.

The [Menu] screen appears.

2Touch [System] on the [Menu] screen.

The [System] screen appears.

3Touch [LCD Settings] on the [System] screen.

The [LCD Settings] screen appears.

4Set the brightness and lighting time of the backlight.

(s = seconds, m = minutes)

For details, refer to “LCD Settings”.