Continued from page 31
the NIR de-sensitizes the ALS to LED
light sources. LED light sources
typically have extremely low IR
spectral content. If the detector is
saturated by light from the LED
source it controls, the ALS will enter
into a PWM (Pulse Width
Modulation) output, dimming the
1) Average: On at dusk 110 lux;
off at dawn 185 lux.
2) Typical: On at dusk >85 lux;
off at dawn < 215 lux.
3) Worst Case: On at dusk > 30
lux; off at dawn < 350 lux.
Continued on page 79
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