5. Operating Instruction
1.) Remove the cover from photo detector
2.)
Turn the Power/Function/Range Switch to select the “lux”
scale and set the range to desired (“lux”, “x10 Lux” or x 100
lux) range
3.) Remove the photo detector to light source in a horizontal
position
4.) Read the illuminance nominal from the LCD display.
Overrange: If the instrument only display one “1” in the M.S.D.
the input signal is too strong, and a higher range should be
selected
5.) When the measurement is completed. Replace the photo
detector from the light source and close the cover
6.) Spectral sensitivity characteristic: To the detector the applied
photo diode with filters makes the spectral sensitivity
characteristic almost meet C.I.E. (International Commission
on Illumination) photopia curve V (
) as the following chart
described.
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