CNH Histogram bin data is a linear measure of the returned VCSEL light received within each histogram bin time period. The values are the result of accumulating data over a very large number of VCSEL signal pulses as determined by the configured integration period.
Ambient light level is continuously monitored during the integration period and is removed from the raw histogram bins before the data is passed to the user as CNH data. This means that bins in which no VCSEL return signal was received will have a value very close to zero (but it can be slightly negative due to noise).
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