21
Performing the RGB calibration.
To ensure the accuracy of each measuring operation, the measuring device should be regularly calibrat-
ed using the enclosed calibration card.
Calibration is only possible in RGB mode and only with non-illuminating surfaces.
The sensor illumination must be activated.
Proceed as follows for calibration:
• Connect the sensor to the measuring device and turn it on.
• Press the measuring button (4 or 16) and check the activated sensor illumination. If this is not lit, turn
the illumination in the sensor head on via the button „LIGHT ON/OFF“ (9).
• Open the envelope with the white calibration card and place the sensor head (15) in the center of the
white calibration circle. The sensor head must be plane.
• Press the two buttons „Function“ (7) and „CAL“ (2) simultaneously. The calibration procedure starts and
the display shows the following:
The start screen appears on the display for approx. 30 seconds. The sen-
sor may not be moved or lifted during the entire calibration procedure.
After this time, the first calibration value appears on the display.
The second calibration value appears after approx. 10 seconds.
Finally, the third calibration value is displayed after another 10 seconds.
The end of the calibration procedure is signalled by three beeps. The CAL
symbol disappears after this procedure. Now the measuring device is
ready for further measuring operations.
