Rion NL-42A, Instruction Manual, Page: 3 / 154

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Organization of the NL-42A/NL-52A documentation
Documentation for the Sound Level Meter NL-42A/NL-52A comes in three
parts, as listed below.
Instruction Manual (this document)
Describes operating procedures for the NL-42A/NL-52A, connection and
use of peripheral equipment such as a level recorder and printer, and use
of the SD memory card.
Serial Interface Manual
Describes communication with a computer, using the serial interface built
into the NL-42A/NL-52A. The manual covers the communication protocol,
use of control commands for the sound level meter, format of data output
by the sound level meter, and other topics.
Technical Notes
This document provides in-depth information about sound level meter
performance, microphone construction and characteristics, infl uence of
extension cables and windscreen on the measurement, and other topics.
The current instruction manual is available on our website.
(https://www.rion.co.jp/english/)
* Company names and product names mentioned in this manual are usually
trademarks or registered trademarks of their respective owners.