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Rion Manuals
Measuring Instruments
NL-3 Series
Instruction manual
Rion NL-3 Series Instruction Manual
Class 1/2 sound level meter
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Contents
Table of Contents
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Table of Contents
Organization of the NL-43/NL-53 Instruction Manual
Table of Contents
Microphone
Structure and Operating Principle
Microphone UC-52 Specifications
Microphone UC-59 Specifications
Preamplifier
Necessity of a Preamplifier
Preamplifier Specifications
Effects of Microphone Extension Cable
Frequency Weighting
Root-Mean-Square Detection Circuit and Time Weighting
Measurement Function
L Aeq (Time-Average Sound Level, Equivalent Continuous Sound Level)
Laieq (I-Time-Weighted Equivalent Continuous Sound Level)
L a E (Sound Exposure Level)
L N (Percentile Sound Level)
Max Min (Maximum and Minimum Sound Levels)
L Atm5 (Takt-Max Sound Level)
L Peak (Peak Sound Level)
L Eq,Mov (Moving L Eq)
Influence of Background Noise
Descriptions for IEC 61672-1 (JIS C 1509-1)
43/NL-53 Free-Field Characteristics
Reference Incident Direction and Position of Reference Point
Microphone Frequency Response
Acoustic Influence of Housing
Effects of Windscreen WS-10
Effects of All-Weather Windscreen WS-15
Effects of Rain-Protection Windscreen WS-16
Electromagnetic Compatibility (EMC)
Microphone Free-Field Correction Amount
Upper and Lower Limits of Linear Operating Range for Sound Pressure Level
8.11 Directional Characteristics
Random Incidence Response
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Class 1 Sound Level Meter NL-53
Class 2 Sound Level Meter NL-43
Instruction Manual
Technical Guide
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This manual is also suitable for:
Nl-43
Nl-53
Nl-63
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