| Products > Test Equipment |
| Oscilloscope Zoom Out Quirk |
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| Martin72:
The last scopes I got(private)/use(on work) having the auto mode as default setting. |
| nctnico:
--- Quote from: kcbrown on October 23, 2022, 10:08:56 pm --- --- Quote from: nctnico on October 23, 2022, 07:47:43 pm --- --- Quote from: kcbrown on October 23, 2022, 07:18:04 pm ---OK, but you have to set the timebase to something. How do you set it on your scope so as to get the maximum capture depth while also retaining the sample rate you want? --- End quote --- You are overthinking it. Zen master says: 'Try not to find problems that aren't there'. --- End quote --- Except I'm not overthinking it. It's simply a question of how to get the capture characteristics to be what you want them to be. Since there are situations in which you don't care about what the timebase setting is, it follows that you can then use the timebase to get the capture size you want in those situations. Point being that those situations, which you explicitly called out, are precisely the ones where you have the fewest valid objections to Siglent's "what you see is all you get" approach. --- End quote --- I suggest you re-read this thread. I have tried to explain how & why zooming out is convenient in great detail as good as I can in previous posts. If you think that these situations are the ones where there are the fewest objections to not having zoom out, then I'm afraid I can't explain it in a way you can fully understand it. Trying to explain again, would take this discussion in a circle. For me the advantages are crystal clear though and a scope which can not zoom out would seriously hamper my workflow efficiency. |
| kcbrown:
--- Quote from: nctnico on October 23, 2022, 10:43:18 pm ---I suggest you re-read this thread. I have tried to explain how & why zooming out is convenient in great detail as good as I can in previous posts. --- End quote --- I don't disagree that being able to zoom out is very convenient under some circumstances. I wasn't disputing that. I was responding specifically to the situations you called out in which you said you don't care what the timebase setting is. Well, if you don't care what the timebase setting is, then what exactly is the advantage of being able to zoom out if you set the timebase to generate a maximum sized capture? Or, alternatively, what's the disadvantage of not being able to zoom out under those circumstances? You're probably twiddling the timebase knob either way in the event the timebase isn't something you care about, right? --- Quote ---If you think that these situations are the ones where there are the fewest objections to not having zoom out, then I'm afraid I can't explain it in a way you can fully understand it. Trying to explain again, would take this discussion in a circle. For me the advantages are crystal clear though and a scope which can not zoom out would seriously hamper my workflow efficiency. --- End quote --- Well, for any given situation, either you care about your timebase or you don't. I presumed that those situations in which you don't care about your timebase are ones in which you could set the timebase arbitrarily, in which case you could just as easily set it to something that guarantees a maximum-depth capture. If you want to be able to zoom out under those conditions, then you have to give up sample rate to do it. So what exactly are you after under those conditions? |
| Someone:
More choice is always good, but nctnico's unstated/shy/hidden refusal of zoom mode is around limitations of specific scopes (which are often not the scopes that this argument is "injected" into). It is valid for the very narrow case of those circumstances and specific scope, and the problem is it is presented as some generalisation or common issue completely out of context and unexplained. Below is an attempt at a pictorial representation of some of the limitations/decisions/tradeoffs real people would consider. If your scope only offers the first example of zoom (small view of trigger) it may well be impractical, or if zoom blocks some other function being used. But this is the sort of nuance that is never stated or avoided by nctnico, even when others are clearly saying and pointing to the second example (large view of trigger) at which point the argument that it is too hard to see becomes silly. More choice, good. Arguing people to un-mentioned corner cases to win internet argument, troll. |
| electr_peter:
Data point on Micsig oscilloscopes. STO1104E allows to perform "zoom-out" if memory depth is set to manual mode (i.e. max 70M). In auto memory mode with most time bases there is no info beyond the data on screen. Memory size, sampling rate and time division settings are always shown on a screen and you can mentally calculate if the is data beyond the screen. |
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