Conrad Electronic 86 01 02 Notice D'emploi page 49

You need the following data:
• The correct UV index (e.g. from a special UV generator)
• The UV index which the wristwatch displays when exposed to the UV generator light.
Example 1:
The UV generator is emitting a UV index of 4.0, the wristwatch displays 4.8.
ADJ = (4.0 - 4.8) / 4.8 x 100 = -17
CAL = 25 - ADJ = 8
Set the correction factor to 8.
Example 2:
The UV generator is emitting a UV index of 8.0, the wristwatch displays 7.8.
ADJ = (8.0 - 7.8) / 7.8 x 100 = 3
CAL = 25 - ADJ = 28
Set the correction factor to 28.

The standard setting of the wristwatch is CAL = 25.
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