| Products > Test Equipment |
| Oscilloscope Zoom Out Quirk |
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| nfmax:
“With enough thrust, pigs fly just fine“ (RFC1925) |
| rsjsouza:
--- Quote from: nctnico on March 05, 2021, 11:56:07 am --- --- Quote from: 2N3055 on March 05, 2021, 09:17:46 am --- --- Quote from: nctnico on March 05, 2021, 12:25:41 am --- --- Quote from: tautech on March 05, 2021, 12:02:39 am --- --- Quote from: rsjsouza on March 04, 2021, 08:20:45 pm --- --- Quote from: tautech on March 01, 2021, 11:22:19 pm ---It's been a long standing implementation of capture strategy by LeCroy, Pico scope and Siglent all of which are respected brands in their respective fields. It allows more power to the user other than in corner use cases. AFAIK it's still on a low priority list for Siglent to modify to suit those that can't/won't adapt to a different way of reaching the same result. --- End quote --- Not having a Siglent/LeCroy/Pico, I can't comment on the practicality aspects between Zoom In and Zoom Out, but this latest skirmish highlights Siglent's decision to not change the behaviour of their Mem Depth setting from "Maximum usable memory" to "User set memory" - IMHO a non-catastrophic bug, but still a bug. --- End quote --- No it's a design decision and for good reason and common to all 3 brands. Any change to current behaviour could impact on specifications optimised by the current design philosophy. --- End quote --- No, it doesn't (and not only on Siglent but also for Lecroy and Picoscope scopes). That is the real kicker! So quit the marketing BS. Nobody is buying it. You can't even explain what the benefit is of this so called 'design choice' is anyway. The reason I know that there are no downsides to adding 'zoom out' is because I have designed & build oscilloscope (like) data acquisition systems. --- End quote --- Well, it is a design philosophy, by choice, which defines architecture. And you cannot know how easy is to add something to already released product, unless it is you who designed it or have privileged knowledge. --- End quote --- It is not a design philosophy. Remember that zoom mode can be used to force use of all the memory while the oscilloscope still works the same. All Siglent needs to do is add a flag to the software which causes the memory length to be what the user selected and hide the zoom window. --- End quote --- Boy, that escalated fast. At any rate, thanks Sinisa and tautech for the additional insights. I still am on the camp of "bug", but I guess that is how I roll... In my DS4014 I can set the full 140Mpts and leave it at that throughout the horizontal range (from 1ns/div to 1000ks/div) and take the penalty on the wfm. |
| 2N3055:
--- Quote from: rsjsouza on March 05, 2021, 04:04:27 pm ---Boy, that escalated fast. At any rate, thanks Sinisa and tautech for the additional insights. I still am on the camp of "bug", but I guess that is how I roll... In my DS4014 I can set the full 140Mpts and leave it at that throughout the horizontal range (from 1ns/div to 1000ks/div) and take the penalty on the wfm. --- End quote --- Rafael, you are absolutely correct, it is nice to be able to chose. As I said before I'm all for that. I don't call it bug, because, it would be bug if it was on the menu and datasheet and then, when you click it, it doesn't work. That's a bug. What you could call it is a missing feature. That is it. How important it is, is a matter of debate, QED.... :-DD.. I would presume Siglent wants customers to be happy, and if feasible, they will add it. If that will attract more customers, adding features will happen. But I would presume that changing fundamental features how timebase and acquisitions work, would need massive testing if all the rest of the scope still works as it should. So even if it was implemented right now, it would probably warrant a new major FW number and testing that goes with it. To make it clear, I have no clue what is really happening in Siglent in regard to this, those are my presumptions how I would do it if I was in charge of that. Take care and stay safe, Siniša |
| SilverSolder:
I guess the benefit to Siglent of making this change, is that potential customers that are used to Agilent / Keysight products would no longer miss this feature. It seems to me that it might be a problem to implement it in a responsive way without the magic of the Megazoom tech? |
| nctnico:
--- Quote from: SilverSolder on March 05, 2021, 07:11:15 pm ---I guess the benefit to Siglent of making this change, is that potential customers that are used to Agilent / Keysight products would no longer miss this feature. --- End quote --- It is not just Agilent / Keysight; every other oscilloscope manufacturer out there has zoom-out on their DSOs! Siglent and Lecroy are the outliers who don't have it. |
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