It is a bit weak on explaining what is actually happening. Averaging mode requires a *recurring* signal and you don't care that transients happen; transients are eliminated in averaging mode. Hi-res mode, on the other hand, "super-samples" each datapoint using spare ADC cycles. This is also a type of averaging, but it may take 8 ADC readings of what will eventually be a single stored data point in memory. You can do this when the sweep rate is substantially less than its maximum sweep rate. This mode allows you to clean up the signal while ALSO capturing transients whose duration is at least one "pixel" of the storage memory. As someone else mentions, reducing environmental noise can help but sometimes that's not an option. I might be testing a switching power supply; and, well, noise is what they generate and lots of it.
I like these bitesized videos as I'm guilty of using my digital scope as a lighter version of my analog scopes , so seeing this I fired up my sigilent ( in my defence, the analogs are tek475 A and M ) and discovered a menu that still had the peel off film on it ,figuratively speaking that is . You learn something new every day , or your probably dead ... or possibly in stasis .
This is actually a bad way to use a scope. I personally would never want to intentionally reduce my bandwidth or turn on averaging or any type of filter as it reduces the actual displayed waveform to one that is less than actual. This is especially bad when checking for uis or avalanching in mosfets, but equally bad for just not knowing what the actual peaks are.
It is a bit weak on explaining what is actually happening. Averaging mode requires a *recurring* signal and you don't care that transients happen; transients are eliminated in averaging mode. Hi-res mode, on the other hand, "super-samples" each datapoint using spare ADC cycles. This is also a type of averaging, but it may take 8 ADC readings of what will eventually be a single stored data point in memory. You can do this when the sweep rate is substantially less than its maximum sweep rate.
This mode allows you to clean up the signal while ALSO capturing transients whose duration is at least one "pixel" of the storage memory.
As someone else mentions, reducing environmental noise can help but sometimes that's not an option. I might be testing a switching power supply; and, well, noise is what they generate and lots of it.
I like these bitesized videos as I'm guilty of using my digital scope as a lighter version of my analog scopes , so seeing this I fired up my sigilent ( in my defence, the analogs are tek475 A and M ) and discovered a menu that still had the peel off film on it ,figuratively speaking that is .
You learn something new every day , or your probably dead ... or possibly in stasis .
Good video on a good scope. Thanks much.
Love it! Good looking
great ideas
No, just hit the CTSU (Clean This Stuff Up) button. You can access the CTSU button via a $100 per month subscription.
I just didnt get it
This is actually a bad way to use a scope. I personally would never want to intentionally reduce my bandwidth or turn on averaging or any type of filter as it reduces the actual displayed waveform to one that is less than actual. This is especially bad when checking for uis or avalanching in mosfets, but equally bad for just not knowing what the actual peaks are.
How to reduce noise on a captured signal on an oscilloscope ?
Answer: Reduce it at the source, not in the measurement lol