Measuring Range - LaserLiner SoundTest-Master Manuel D'utilisation

5

Measuring range

Select the corresponding measuring range in the device to achieve the required degree of accuracy of
measurement results. In addition to the option of selecting the measuring range manually, the device also
features an automatic range detection function. You can set the required measuring range by pressing the
"LEVEL" buttons. To set the automatic measuring range, press and hold the "LEVEL 5" button until the
measuring range 30...130 dB appears in the display.
Use the automatic measuring range to gauge the corresponding range. Then switch over to the
!
determined manual measuring range as greater accuracy is achieved in this range. Ideally, the
measured value should be in the middle of the defined measuring range.
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Time weighting (FAST/SLOW)
Always make sure the time weighting is set correctly to match the signal to be measured. If
!
"SLOW" weighting is used for signals that change fast the measurement result may be falsified as
peak levels may not be recorded.
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EN
Measuring range: Manual
30 ... 80 dB
40 ... 90 dB
50 ... 100 dB
Measuring range: Automatic
30 ... 130 dB
The following alert is shown on the display when the
measured values are outside the preset measuring range:
The measured value is below the measuring range.
UNDER
Correct the measuring range downward.
The measured value is above the measuring range.
OVER
Correct the measuring range upward.
The device features two different measuring intervals. "FAST"
time weighting should be set for signals that change quickly.
"SLOW" time weighting should be set for continual signals
that change slowly. The "FAST" measuring interval is 125
milliseconds while the "SLOW" measuring interval is 1 second.
The time weighting can be changed at any time during the
measurement by pressing the "FAST/SLOW" button.
60 ... 110 dB
70 ... 120 dB
80 ... 130 dB