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Forum Index : Microcontroller and PC projects : PULSIN resolution

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ville56
Senior Member

Joined: 08/06/2022
Location: Austria
Posts: 288

Posted: 04:25pm 14 Jul 2022

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I have a problem to understand what the resolution description for PULSIN in the manual means. It says "Measures the width of an input pulse from 1?s to 1 second with 0.1?s resolution".

If i measure a 1kHz pulstrain with a 50% duty cycle, i get 500/500 for high/low periods. Likewise for 10kHz i get 50/50. So this values are in uSec and follow quite accurate when i change the duty cycle or frequency. Resolution is thus IMHO 1 uSec, not 0.1 uSec.

But what does it mean to have 0.1 uSec resolution then? Changing datatype from integer to float makes no difference (which i expected somehow).

I'm running Beta 14 on a Pico.

Any clarification is appreciated.

Reagrds,
Gerald

73 de OE1HGA, Gerald

matherp
Guru

Joined: 11/12/2012
Location: United Kingdom
Posts: 10628

Posted: 04:32pm 14 Jul 2022

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Quote Resolution is thus IMHO 1 uSec, not 0.1 uSec.

Correct - manual needs updating - cut-and-paste from the CMM2

ville56
Senior Member

Joined: 08/06/2022
Location: Austria
Posts: 288

Posted: 04:35pm 14 Jul 2022

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Many thanks for clarification !!!

73 de OE1HGA, Gerald

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