Organization of the NL-43/NL-53 Instruction Manual
There are four types of instruction manuals for Class 1 Sound Level Meter (with low-frequency sound measurement function) NL-43/NL-53.
Quick Start Guide
This manual describes the basic handling of Sound Level Meter NL-43/NL-53.
Operation Guide (This Document)
This manual describes how to use Sound Level Meter NL-43/NL-53 (with Extended Function Program NX-43EX), how to connect and use peripheral devices such as sound level recorders and printers, and what to do when using an SD card.
Communication Guide
This manual describes communication between a computer and Sound Level Meter NL-43/NL-53 via a serial interface. It describes such topics as the communication protocol, commands for controlling the sound level meter, and data output from the sound level meter.
Technical Guide
This manual is a technical guide to the sound level meter and noise measurements, including the performance of Sound Level Meter NL-43/NL-53, microphone structure and characteristics, and how extension cables and windscreens affect measurements.
