Choose which type/feature to run and click the button Calibrate. The Calibrate button has the states on and off, so if you want to cancel the calibration run you will have to depress the Calibrate button. Simply clicking Cancel will have no effect.
The first calibration should be done with only Power/Brightness marked and duration set to 1 minute. This ensures that the system only runs through one cycle.
The system will now run through the Power/Brightness part of the calibration.
After the initial calibration the light level in the different channels should be close, but not perfect. You will need to measure the brightness on each channel using a light meter before running a secondary full calibration in order to get optimal results. Set all the channels to the 90% white, and turn off all the colors.
Then turn on all the colors in one by one channel (alone), and measure the light level in the center of the channel as seen from the eye point. Make sure the Chroma Meter is set to measure Foot Lamberts. Input the values to the respective channels Scale W in the Color Calibration Setup dialog.
The secondary calibration should include all calibration types, and should be run for as long as convenient. Mark all calibration types/features (Power/Brightness, Color Linearity and Whitepoint), and set the Measurement duration to several hours, and let it run over night.