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5. Spectral sensitivity characteristics
Concerning the detector, the applied photo diode with filters makes the spectral sen-
sitivity characteristic almost meeting the standard C.I.E. (International Commission
on Illumination) photo-optic curve V ( ) as described in the following chart below
6. Operation instructions
1. Power-key: The power key has to be pressed to turn the light meter ON or OFF.
2. Selection of the Lux/FC scale: The range selection switch has to be set to the
desired Lux/FC range.
3. The photo detector cap has to be removed and it has to be faced to the light
source in a horizontal position.
4. The illuminance nominal has to be read from the LCD display.
5. Over range: If the instrument only displays one "1" in the M.S.D., the input signal
has been too strong and a higher range should be selected.
6. Data-HOLD mode: The HOLD key has to be pressed to select the HOLD mode,
the light meter will stop all further measurements.
If the HOLD button is pressed again, this operation will be cancelled and the light me-
ter will return to normal operation.
7. Data-PEAK mode: The PEAK key has to be pressed to select the PEAK mode. If
this item is selected, the light meter stops all further measurements. If the PEAK key
is pressed again, P-H mode is being cancelled and it returns to normal operation.
8. When the measurement is completed, the photo detector cap has to be clipped on
again and the power key has to be turned off.
7. Battery check and replacement
1. As the battery power is not sufficient, the LCD will display the symbol
and re-
placement of a new battery type 9V is required.
2. Therefore, the instrument has to be powered off. Then the battery cover has to be
pressed and pushed (at the same time) in the direction of the arrow shows to open.
3. The battery has to be disconnected from the instrument and replaced with a stan-
dard 9V transistor battery.
4. The battery cover has to be snapped on again.
SO_200K-BA-e-1713
5
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