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A newbie needs some help with my first DSO
awakephd:
This may not be very exciting to those of you who are more experienced ... but just in case anyone is interested, I am happy to report that I have had my first success in using my new SDS804X "for real."
I am sure this was a trivial example for most - a small custom PC board built around an Atmega Tiny 84a, a DVR8837c motor controller, an IR sensor, and a couple of buttons; I designed this to replace a failed controller board. Having 4 channels and the ability to capture relatively slow events (both in rolling mode and in single-shot mode where I could zoom in to check timing between various signals) allowed me to debug a problem with the DVR8837c (turned out that one of the leads didn't get soldered properly) - and it also alerted me to a strange bug that was completely unexpected, a periodic wake-up from sleep mode that shouldn't be happening - I still am working on what that's about. I was also able to test the debounce filter on the switches (using single-shot mode, then zooming in) to discover that I somehow put a 10uF capacitor where I meant to put a .1uF capacitor ... just a wee bit of difference. (In general I really like using 0603 and 0805 SMD components, but I hate that there are no markings on the capacitors - or at least, none that I am aware of - it wasn't until I saw the l - o - n - g slope of the signal that I realized something was wrong.
Again, none of this compares to the kinds of high-speed engineering some of you all do, but I am really thrilled - this is exactly the sort of thing I had not been able to pin down using my old analog scope, and thus the reason I decided to buy a DSO!
tautech:
--- Quote from: awakephd on June 10, 2024, 09:11:53 pm ---This may not be very exciting to those of you who are more experienced ... but just in case anyone is interested, I am happy to report that I have had my first success in using my new SDS804X "for real."
--- End quote ---
:-+
--- Quote ---..........to discover that I somehow put a 10uF capacitor where I meant to put a .1uF capacitor ... just a wee bit of difference. (In general I really like using 0603 and 0805 SMD components, but I hate that there are no markings on the capacitors - or at least, none that I am aware of - it wasn't until I saw the l - o - n - g slope of the signal that I realized something was wrong.
--- End quote ---
Let ST42 be your next investment. ;)
https://www.eevblog.com/forum/testgear/design-a-new-precision-lcr-tweezers/
tggzzz:
--- Quote from: awakephd on June 10, 2024, 09:11:53 pm ---This may not be very exciting to those of you who are more experienced ... but just in case anyone is interested, I am happy to report that I have had my first success in using my new SDS804X "for real."
I am sure this was a trivial example for most -
Again, none of this compares to the kinds of high-speed engineering some of you all do, but I am really thrilled - this is exactly the sort of thing I had not been able to pin down using my old analog scope, and thus the reason I decided to buy a DSO!
--- End quote ---
Good stuff! :)
It is easy to forget that a scope is merely one tool that helps you get a job done. What matters is that you decide what you need to find out, you know what each tool can and cannot do, you choose an appropriate tool, and use it effectively. Often it is easier to answer a question, and more difficult to find the right question to ask.
It is frequently the case that there is overlap in tools capabilities.
awakephd:
--- Quote from: tautech on June 10, 2024, 09:19:58 pm ---Let ST42 be your next investment. ;)
https://www.eevblog.com/forum/testgear/design-a-new-precision-lcr-tweezers/
--- End quote ---
Thanks for the tip! Ordered and on the way ...
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