How many signal readings are taken during the real-time data acquisition on the Rotor-Gene Q?

At the selected data acquisition step of the thermal cycle on the Rotor-Gene Q, the fluorescent signal intensity is measured 20 times for each sample as they spin past the detector. Tubes on a rotor spin past the excitation/detection optics every 150 milliseconds. The average of the 20 readings is then taken as the fluorescence of the sample at that cycle number.