DMAX is the distance that we could see given an amount of ambient light. So if it was 50cm and we showed no target, then you could no there was NO target between the sensor and 50cm. As the ambient light (basically sunlight) goes up, DMAX will go down.
The AmbientRate is the number of photon counts we get before we turn the laser on. Thus our signal is anything over Ambient. But if the ambient is really high, the sensor is saturated and the sensor cannot 'see' anything.
The SpadRtn Count is the number of photon counts attributed to the signal. Sensor likes 20M counts, but we can make do with as few as 0.5M counts.
Min Range Fail is the sensor indicating your answer would have been negative if we allowed negative returns. If you get this re-examine the section on offset calibration. This error should not occur.
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