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

5.4 Time-Level screen

The time-level screen can be displayed by setting [Time-Level] on the [Display] screen to a setting other than [Off] (“Leq Calc.”).
Each time you touch [Disp] on the menu ring, the display switches in the order of the sound levels screen » calculated values screen*1 » time-level screen*2 » sound levels screen.
*1 Not displayed when all the calculated value settings of [Leq Calc.] under [Display] of [Menu] are set to [Off].
*2 Not displayed when [Time-Level] under [Display] of [Menu] is set to [Off].

Time-Level screen