Sound level meter – NTi Audio XL2 Sound Level Meter User Manual

Page 24

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24

Sound Level Meter

Logging: Setup of Data Logging

The XL2 features a powerful sound level meter data logger,
which allows you to record all required sound level values dur-
ing the measurement. In the logging page you set which sound
pressure levels shall be logged over time. For details refer to
the chapter Logging. Choose between:

ALL

Logs all sound pressure levels.

Selected Logs up to 10 different individually-defined sound

pressure levels.

Event Trigger: Event Setting (optional)

The event function is available with the optional Extended
Acoustic Pack. The XL2 event feature offers the following func-
tionalities:

Automated event triggered at noise levels above/below a

preset value including setting markers for specific noise cat-
egories. Application example: Recording the noise level for
LAF > 80 dB.
Event triggered by external key press of the XL2 Input Key-

pad. You can utilize four keys (1-4) to categorize any noise of
interest or noise to be later excluded in the post-processing.
A typical application is categorizing any annoying industrial
noise by persons living in the neighborhood.

Limit LED: Limit Setting

Here you set the function of the limit LED , thereby highlight-
ing any sound level that exceeds the pre-set limits in orange
or red color. Further, external peripherals are controlled by the
optional Serial I/O Interface based on the sound level, such as
displaying sound levels on a large external red-orange-green
lamp. For details refer to the chapter Limits.

K

SET

Correction: Setup of Correction Values

This page provides a wizard to measure correction values,
which could be helpful for compliant sound level monitoring
of live events. It measures the correction values between
the actual measurement position and the loudest posi-
tion accessible by the audience. The XL2 displays and logs
the selected sound pressure levels including the correction
values, allowing the sound engineer to monitor the sound
level at the loudest position in the audience. The measure-
ment meets the requirements of the standards DIN15905-5
and SLV. For details refer to chapter Correction Value K

SET

.

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