
In the following the individual steps for calibrating the sensors are described:
INFO: The individual pop-up windows are intended as a help to guide you through the calibration process.
ATTENTION: It is a prerequisite for successful calibration that the sensor front-end is calibrated to a white
surface.
Step 1:
First of all a suitable POWER value must be found such that the
RAW DATA for RED, GREEN and BLUE lie in the dynamic
range (upper third of the bar display).
Step 2:
When you have set a suitable POWER value, determine a
SETVALUE FOR R,G,B. The software now calculates the
calibration factors in such a way that this SETVALUE is reached
for the raw data (see calculation example above).
Step 3:
Determine a MAX DELTA OF RAW DATA (the software
suggests 250).
Calibration is only permitted, if the current DELTA of the RAW
DATA is smaller than the MAX DELTA OF RAW DATA.
DELTA is the maximum of RED, GREEN, and BLUE, minus the
minimum of RED, GREEN, and BLUE. This is necessary in
order to ensure that the sensor functions properly and
calibration is performed on a white surface.
Step 4:
Start calibration by pressing CALC CALIB FACTORS.
The button starts to flash in red, and at the same time 100 raw data are recorded through the interface, of which
the respective mean value of RED, GREEN, and BLUE is formed.
The individual calibration factors are formed from these mean values and from the SETVALUES FOR R,G,B and
they are then entered in the corresponding edit-boxes.
The calibration software automatically saves the calculated calibration factors to the EEPROM of the sensor.
Then the software changes to the GO mode and displays the RAW DATA and the calibrated data in the main
panel.
Please note that the values for RED, GREEN, and BLUE in the main panel approximately are equal to the value of
SETVALUE.
You may also change the calibration factors CF_RED, CF_GREEN, CF_BLUE manually by entering new values
in the corresponding input fields. Please note that these factors are saved to the EEPROM by pressing SEND CF.
GET CF reads the calibration factors that are currently saved in the EEPROM.
If pressing CALC CALIB FACTORS should not be successful, please follow the information provided in the pop-up
windows.
Calibration only is completed successfully, if the following pop-up window is displayed:
colorCONTROL C4
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