Larson Davis SoundTrack LxT, Руководство пользователя

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LxT Manual Basic Measurement Setup 4-1
C H A P T E R
4
Basic Measurement Setup
This chapter describes how to setup the LxT to perform
basic sound level measurements, including the following:
• Leq, Lmax, Lmin corresponding to user-selected
values of frequency weighting and detector
• Lpeak and Lpeak(max) corresponding to a user-
selected value of frequency weighting
• 1/1 and/or 1/3 Octave real-time spectra (LxT-OB3
required)
• Six values of Ln based on six user-selected values of
the parameter n
• Count of the number of times the levels (RMS and
Peak) exceeded user-selected threshold values
• Sound exposure and sound exposure level data
The LxT can measure many additional sound
parameters simultaneously with these basic sound
measurements, as described in subsequent chapters.
Measurement Settings Tabs
Accessing the Measurement Settings Tabs
The parameters defining measurements are set from the
Measurement Settings tabs.
To access these tabs, press the Center Softkey labeled
Menu, press the
2
key to select Settings, and press the
5
(ENTER) key. The Measurement Settings tab most
appropriate for the data now appears.