Figure 10 (b) indicates luminosity versus output serial data measurement
results for high and low resolution modes.
A comparison of the two resolution modes for improved
lighting control is shown in Figure 11. The H-resolution
mode has the highest resolution (1 lux increments) and
is suitable for measuring very low lux levels, but it takes
the longest time to measure a light sample. The advantage of operation in this mode is a higher accuracy lightsample and superior optical noise rejection since this
capability improves with increased measurement time.
Operation in H-Resolution mode eliminates optical noise
at 50Hz/60Hz. An example of optical noise reduction
with a fluctuating fluorescent light source output,
demonstrating values stable within ±1%, is shown in
Figure 12.
The L-resolution mode samples in 4 lux increments and
takes the shortest time to measure a light sample. Note
that in contrast to the analog ALS, different operating
modes do not impact the power consumption in digital
units.