Re: Continuous Pulse-Width Measurement
- From: Hans-Bernhard Broeker <broeker@xxxxxxxxxxxxxxxxxxxxx>
- Date: 24 Apr 2005 14:53:12 GMT
jawereq@xxxxxxxxxxx wrote:
> in combination with a micro that can be used to continuously measure and
> buffer all of the high and low pulse-widths of a binary signal. I'd like
> to be able to buffer about 1000 16-bit width measurements in one shot.
> The catch is that the smallest pulse width measurable needs to be 700ns or
> better (500ns would be nice).
Measured to what accuracy? Is it enough to distinguish 700 ns from
zero, ie no pulse at all (most of the time), or do you have to know
whether it was 700 or 700.5 ns? What about a maximum pulse length?
What's the minimum pause between pulses?
I rather much doubt that anything looking like a CPU will get you
there. I guess a bit of analog electronic would get this job done
faster (think time-to-analog conversion, comparators,
sample-and-hold).
--
Hans-Bernhard Broeker (broeker@xxxxxxxxxxxxxxxxxxxxx)
Even if all the snow were burnt, ashes would remain.
.
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