User manual

48
Sound Level Meter
Another example is environmental noise monitoring: Listening
to the recorded wav-file after the measurement may help to
determine the predominant sound source. The XL2 Analyzer
preserves the original absolute test signal level in the recorded
wav-file.
The XL2 Analyzer provides three input ranges to accom-
modate the wide range of input signals. The dynamic range
of the recorded wav-file is set according to the selected in-
put range. For example, at a microphone sensitivity of
S= 20 mV/Pa, the full scale peak level is:
Range Name Range Level Full scale peak level
Low 10 - 110 dBSPL 117.8 dBSPL
Mid 30 - 130 dBSPL 135.9 dBSPL
High 50 - 150 dBSPL 159.9 dBSPL
Select the lowest possible input range accord-
ing to the maximum level expected during the
measurement; e.g., If the sound pressure will
always be below 110 dBSPL, select the lowest
input range 10 - 110 dBSPL.