Michael Barabanov wrote:
>
> Yuhong Ren ([EMAIL PROTECTED]) wrote:
> > Hello,
> >
> > I am new of RTL, I wish to be informed whether the highest sample rate for the
>application of RTL is 10KHz?
>
> Depends on the hardware. On a fast Pentium, having put the timer in
> periodic mode, you can go much higher (50 kHz and more).
The task switching can go easily in excess of 50 kHz, up to 100-150. The
point is that the max jitter is likely to be the same as the period. So
on the average it works, but if you run a square wave example, toggling
of a bit on the parallel port, on a memory scope after a few minutes
you'll see no trace of a square way, but just a thick black band. In my
opinion, unless you can accept to dedicate your PC just to the control
task, i.e. single user with muted disks and peripherals plus all the
unneeded system support processes killed, serious PRODUCTION work in
excess of about 20 kHz is a matter for dedicated DSPs.
Ciao, Paolo.
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