User Manual

3. The C-weighting curve is nearly uniform over the frequency range from
30Hz to 10.000kHz, thus giving an indication of overall Sound Level.
4. The fast response is suitable to measure shout bursts and peak values
from sound source.
5. The sound level will be displayed.
6. Note: Strong wind (over 10m/sec.) striking the microphone can cause
misreading for measurement in windy locations.
6.11. Measuring Light
1. Set the function switch to „Lux“-position and set the range to desired
(„lux“ or „10 x lux“) range.
2. Face the photo detector to light source in a horizontal position.
3. Read the illuminance nominal from the LCD-display.
4. Overrange: If the instrument only display one „OL“ in the LCD the input
signal is too strong, and a higher range should be selected.
6.12. Measuring Light
100% (Relative Sensitivity) Spectral Sensitivity
80% V(λ )
60%
40%
20%
0
400 500 600 700
Wavelength (nm)
-48-