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Proceed as follows for the measurement:
1
1� The measuring leads are not required�
2� Turn the DMM on and select measuring function "dBC"�
3� Align the DMM with the measuring aperture (16) towards the
sound source� Min� distance 1 m�
4� The measuring value is shown on the main display�
5� Switch off DMM after measuring�
Strong wind (> 10 m/s) may negatively influence the meas-
uring result�
11.14 Lighting measurement
The lighting measurement is used to verify the light conditions in living and work rooks, etc� The light sensor includes
a spectral filter that only lets through visible light for measurement
The lighting sensor is placed at the centre top (15)� During measurement, the measuring device should be aligned at
a right angle to the light source�
Do not look into any bright light sources. This may lead to visual impairment. Keep sufficient distance
between the DMM and hot sources of light�
Proceed as follows for the measurement:
1
1� The measuring leads are not required�
2� Turn the DMM on and select measuring function "Lux"�
3� Align the DMM with the light sensor (15) towards the light source�
4� The measuring value is shown on the main display� When only
the middle display segment shows "1", the measuring range was
exceeded� Switch to the next measuring function "Lux x10" with
the dial switch� The indicated measured value now has to be mul-
tiplied by 10�
5� Switch off DMM after measuring�
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