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Calculation example for determining the calibration factors

In the example in the picture below, a POWER value at which the three bars of the raw signals RAW DATA are in

the dynamic range has been set. Each of the three bars is at approx. 3600 digits. It is thus appropriate to set a

setpoint value of 3600 (see SETVALUE FOR R,G,B) for the three bars. When calibration is now started by

pressing CALCULATE CALIBRATION FACTORS, the software automatically calculates the calibration factors for

channel RED, channel GREEN, and channel BLUE. The calibration factors are normalized as integers to the value

1024.

Formula:

CF_RED = (SETVALUE / RAW DATA RED) * 1024 = (3000 / 3354) * 1024 = 915

CF_GREEN = (SETVALUE / RAW DATA GREEN) * 1024 = (3000 / 3064) * 1024 = 1002

CF_BLUE = (SETVALUE / RAW DATA BLUE) * 1024 = (3000 / 2712) * 1024 = 1132

When the calibration factors have been calculated by the software on the user interface, they are automatically

saved to the non-volatile EEPROM memory of the sensor. Calibration is then finished, work can then be continued

in the main panel.

When the sensor detects a raw signal, it applies the calibration factor saved in the EEPROM to this raw signal,

i.e. in the main panel only the calibrated data for the RED, GREEN, and BLUE channels are displayed. Evaluation

by the micro-controller also is exclusively done with the calibrated data.

colorCONTROL C4

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