Instruction manual

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Organization of the NL-42/NL-52 documentation
Documentation for the Sound Level Meter NL-42/NL-52 comes in three
parts, as listed below.
Instruction Manual (this document)
Describes operating procedures for the Sound Level Meter NL-42/NL-52,
connection and use of peripheral equipment such as a level recorder and
printer, and use of the memory card.
Serial Interface Manual
Describes communication with a computer, using the serial interface built
into the Sound Level Meter NL-42/NL-52. The manual covers the com-
munication 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, in uence of
extension cables and windscreen on the measurement, and other topics.
* Company names and product names mentioned in this manual are usually
trademarks or registered trademarks of their respective owners.