Spot on. So many guys blame the hardware when their waveforms look stepped or trashy, not realizing they are only utilizing a tiny fraction of their vertical resolution. Seeing how dropping the sample rate on the Pico allowed you to capture over 8 minutes of usable data was a perfect demonstration of "looking at the forest through the trees". Awesome video, keep them coming. Would love to see future training videos on the TOPDON scope!
Good stuff brother, love the way that you break things down so that this stuff is easier to understand. If it wasn't for guys like you, Dennis from gadgetsplaylist and a few others, I would probably never have picked a scope up
Using a in cylinder pressure transducer is where you really see the difference of 8bit vs 12bit . I used my WPS500 with my Fluke scope one time and man it was definitely very limited in their fine details that are needed to make decisions in valve opening .
I turn my sample rate down as well with My Migsig Ato1004 which looks identical to the Topdon scope. I turn it to the lowest one like you did it the video. Been doing research as well about the BIT on Scopes and this added to more information I didn't know. Thank you
Excellent video. Great point about learning more on less capable scopes. I use the 8-bit PicoScope 2204A. It works great for DIY Diagnostics. When looking at inductive pickup of an ignition signal, I can scale it to ignore then height of the firing line (kEV) and get good detail on the rest of the waveform. Also, the PicoScope Software is incredible...and free! 🔧
Thank you for the tip on oversampling, I did not realise that - now I understand the relation of sampling rate to what's on the screen. On Micsig the rate drops when you go to automotive menu and select tests there. Once I noticed that, I began using manual setup instead and oversampling without knowing what I'm doing. I wish the Rotkee (MLab) scope was available, it is 12 bit for a price that is unmatched but there's war in Ukraine and it's not made anymore. But, as you've shown, there is a workaround. For the DIY folks like me the price of Pico is prohibitive. I decided that in my case the money is better spent by buying and fully utilizing 8-bit Micsig Vato, through obtaining high quality attachments to be able to actually do the tests and to have good resolution which cannot be achieved with cheap transducers, cheap amp clamps etc.
It's like trying to enlarge a photo on microsoft paint; when you make it bigger it gets choppy. Or when you zoom into details on a low res photo.
Pico makes it easy because on top of changing voltage settings you can also change the scale and offset to make the signal fill up most of the screen. I do wish they would incorporate a feature to save presets for that stuff like how you can do for probes.
For my 2205 I'll just pump the sample rate as high as it will go. For the 4425, I have to set sample rate at a medium setting so the file size isn't like 500mb when I try to save it.
I got away from doing guided test once I learned the basics. So that I would be forced to learn how to set up my scope if it wasn't Pico in the future. Now I am at a point were I realized that I am only using a maybe half of what my scope can do. but I am probably not using it correctly at times as far as settings. I actually have the Autel Ultra first edition and I do pull that scope out a lot more then my Pico because it is wireless. I know you offer training and I will take part in the training as time and funds allow but money is super tight due to a bunch of medical problems that nuked my world this year. SO this free video is so appreciated for someone that has been looking for help to under stand a scope and the setting. Question. How are you zooming in on the Pico? Are you using the zoom button that normally appears on the right top of the screen? FYI I use 2-1 laptop. So I do not use a mouse ever, other than the touch pad.