* Photo diode : silicone photodiode, effective section area :100mm2, Mismatching factor : f1¡¯<1.5% Class L
* Equipment Sampling Rate : 5 kHz
* Calculate Flicker Index and Percent Flicker
a. Frequency: Detect frequency using fourier transform
b. Percent flicker: 100 X ( A – B ) / ( A + B )
c. Flicker index : Area1 / ( Area1 + Area2 )
< Frequency ONE CYCLE detected by fourier transform>