Measuring an event (clock prescaler change?)

Projects General Guidance
1

Hi all,

So I want to measure a fast event, fast, but much slower than the analogRead time (mine returned 116us).

This means that the duration of my event is not captured by a single analogRead, and may return inaccurate results, or even miss it.

The events I want to measure last in the range from 1/800th of a second to 1/10,000th of a second generally speaking.

Is there much of a delay between analogReads and comparative logic (an if statement) that would prevent adding all the results of the analogRead together as an reasonable accurate measurement?

edit: trying out adding them altogether now until value drops back to very near to base detected level when event is not present.

2

this fast event of you, is that an analog signal or a digital signal?
What is it source?
Is it between 0..5 volts? or ?

do you have some code yet?