Idiots guide to the DSO138?

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whatsitdoingnow
Posts: 1
Joined: Wed Oct 11, 2023 1:01 pm

Idiots guide to the DSO138?

Post by whatsitdoingnow »

Hello JYETECH Forum,

I've never had an oscilloscope before. I got a DSO138 'cus I was bored at home recovering from surgery.

Now it's built and working, and in a plastic box, I have set about learning how to use it.

Most is self-explanatory but I've no idea what the duty cycle and PWM setting do.

I understand that duty cycle is the percentage of "on" time per given period - but why have an adjustment for it? Doesn't the scope measure this?

PWM/Frequency - what am I changing when I adjust this? why would I want or need to change this?

No amount of googling or youtube has given me a satisfactory answer - most youtube on these just says "this button changes this" - I'd got that far myself, I want the deep dive behind what's going on.

Any knowledge is gratefully received 👍🏻

Rgds, whatsitdoingnow
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