Larson Davis SoundExpert LxT, User Manual

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6-2
Performing Measurements LxT Manual
Use of a Windscreen
Wind blowing across the microphone generates pressure
fluctuations on the microphone diaphragm that can produce
errors in the measurement. As a result, when performing
measurements in the presence of low level airflows, it is
recommended that a windscreen be placed over the
microphone. Larson Davis provides the WS001 windscreen,
a 3 1/2” diameter ball made of open cell foam which can be
placed over the microphone and preamplifier as shown in
FIGURE 6-1.
FIGURE 6-1 Position of Windscreen
Performing Measurements
This section describes the steps for performing basic sound
level measurements.
Starting the Measurement
The LxT uses a single range for
sound level measurements, so there
is no need to select a range. as part
of making a measurement. The Live tab displays current acoustic data that is not being
recorded or stored. Pressing the
9 (
RUN/PAUSE) key
causes the LxT to begin storing data, which is displayed on
the
Overall tab.