Good morning/day/night gentelmens,

I have to know your opinion regarding Vrms and frequency measurements
for a continuous 1...100KHz signal ( 0... 2KVpp)

There are a few principle I know for Vrms measurements:
-- zero cross syncronizing with external interrupts on Rb3 or interrupts
on change on rb4...rb7, delay with a half semi-period then sample and
average will gave Vpeak to peak, then math to achieve Vrms
-- V peak to peak measurement without mains syncronization using
integrative methode and conversion to Vrms

For frequency measurement:
-- tmr0 with external clock ( excluse here because
I'm using tmr0 for button debounce and internal RTC )
-- compare/capture module which I haven't used yet...

My problem is: both measurements must be performed "simultaneously", with
the smallest possible delay. I would be pleased to listen from your
experience. Thanks.

Sincerely yours, the same
Vasile Surducan

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