10–10 Minimate Pro Operator Manual
NOTE: The microphone windscreen attenuates the microphone reading by 0.2 dB. In most cases,
this does not have a material impact on results.
WARNING: Handle the microphone with care. Dropping the microphone or otherwise subjecting
it to impact may damage the microphone element. The windscreen can help to
protect the microphone, and its use is recommended.
10.5.2. Microphone Theory of Operation
This section describes how the ISEE Linear Microphone operates. The ISEE Linear Microphone
measures air pressure.
a. Measurement Scales
The Minimate Pro supports the Linear “L” sound pressure measurement scale.
(1) Linear “L”
Linear measurement is generally used to measure the effect of low frequency air pressure on
buildings. The linear scale records sound pressure without modification in the 2 to 300 Hz range.
Measurement units may be in absolute, Pascal, or relative dB scales.
b. Microphone Calibration Requirements
Instantel’s ISEE Linear Microphone must be calibrated annually by Instantel or an authorized
Instantel service facility. Contact your dealer for further information.
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