Nikon coolpix L100 Repair Manual page 49

4. Pattern box
Before using the pattern box, turn its power on to carry out "aging" approx. 30 minutes: the color
temperature must be adjusted to 3100 ± 20K by the color meter. When the pattern box is used and for
a while even after the power turns off, the lamp and its surroundings are subject to high temperatures, so
handle them with care.
< Procedure for correcting Pattern Box >
Note) Be sure to perform "aging".
1) Measure the measuring point (center of diffusion plate) with the color meter .
2) Adjust the pattern box so that the color temperature is 3100 ± 20K by using "VR for adjustment of the
color temperature".
3) Measure the center of the diffusion plate with the luminance meter (BM-3000).
4) Adjust by the knob for luminance adjustment so that luminance becomes "Y±20cd/m
calculating formula on the next page.
5) Repeat from 1) to 4) for calibration.
Power switch
VR for adjustment of
the color temperature
- A ･ L100 -
Knob for luminance
adjustment
Aperture unit
INC
VMA43007-R.3780.A
" shown in the
2
Diffusion plate
Area to be measured