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| Siglent SDS800 Zoom out question (problem?) |
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| electr_peter:
I should really get heavy machinery operator license to use excavator instead of shovel to dig through thick layers of BS. Readers can make conclusion for themselves as a HW exercise. There is so much both educational and entertaining material on scope technology, semantics and other relevant topics on this forum - where else would one find such a broad scope (pun intended)? :D |
| tautech:
--- Quote from: electr_peter on October 07, 2024, 08:31:48 pm ---I should really get heavy machinery operator license to use excavator instead of shovel to dig through thick layers of BS. Readers can make conclusion for themselves as a HW exercise. There is so much both educational and entertaining material on scope technology, semantics and other relevant topics on this forum - where else would one find such a broad scope (pun intended)? :D --- End quote --- One might suggest such investment is better spent on visionary aids. |
| electr_peter:
--- Quote from: tautech on October 07, 2024, 08:40:05 pm --- --- Quote from: electr_peter on October 07, 2024, 08:31:48 pm ---I should really get heavy machinery operator license to use excavator instead of shovel to dig through thick layers of BS. Readers can make conclusion for themselves as a HW exercise. There is so much both educational and entertaining material on scope technology, semantics and other relevant topics on this forum - where else would one find such a broad scope (pun intended)? :D --- End quote --- One might suggest such investment is better spent on visionary aids. --- End quote --- Don't forget reading aids ;) |
| Someone:
--- Quote from: electr_peter on October 07, 2024, 04:01:10 pm --- --- Quote from: Someone on October 06, 2024, 08:55:23 pm ---...the bonus (unreliable) Keysight capture on stop... --- End quote --- Keysight feature is not unreliable, that is not what the word "unreliable" means. On scope it works according to the same logic every time. Signal and trigger conditions affect final result, but that is not "unreliable". If scope BSOD'ed or showed different results for the same conditions, that would be unreliable. --- End quote --- If it is reliable and follows the same logic, where is this logic documented or explained? The time period that it will make the bonus capture is very small, and it relies on more triggers arriving. Same as your next "solution" you proposed. And this is only some Keysight scopes, can you name which ones do and which ones dont? I only know 3 models which do and several models which dont and am unaware of any list or clear documentation. --- Quote from: electr_peter on October 07, 2024, 04:01:10 pm --- --- Quote from: Someone on October 06, 2024, 08:55:23 pm --- --- Quote from: electr_peter on October 06, 2024, 01:13:41 pm --- --- Quote from: Someone on October 05, 2024, 11:13:36 pm ---There are two straight out lies which are being raised here once again: Claiming that if you don't blindly capture around the screen then you will have to capture again. Despite that you can capture the entire interesting data without having to capture around the screen. --- End quote --- You move around the issue. If STOP capture was made and was deemed to be too short, then with "zoom out plus" you may not need to make a new capture. With other scopes you do, there is no way out of this situation. --- End quote --- You can keep saying there is no possible way to achieve the same result, and we'll keep saying it is trivial. --- End quote --- You are miss-reading my post and giving completely different meaning. I do not say anywhere that the is no alternative ways to achieve the same result (which should be even more clear if you read my post context with several following sentences which you didn't quote here). I said that in specific circumstances without "zoom out" scope user is more limited than otherwise. Please read this conditional statement with clarifying comments carefully: --- End quote --- You added the context later and are trying to drive the conversion to one single point that is not explained or motivated, still you add more noise than explanation. Also cutting out of your quote where I separate the ideas so people can discuss it without all the confusion or the new terms you decided to "define" with bold. --- Quote from: Someone on October 06, 2024, 08:55:23 pm ---a) Set the horizontal time base to the period you want to have captured. If you want a narrower/magnified view on the screen enable the zoom. b) Same resulting capture as capturing around the screen (assuming they are set to the same memory depth). c) Same resulting capture as the bonus capture some keysight models make when pressing stop (assuming they are set to the same memory depth). --- End quote --- Right now you seem stuck on c) which is ok, just say it clearly that you think the Keysight additional (possible) capture on stop is a way you think people should consider. I argue since it is undocumented and only works in narrow circumstances it is poorly comparable to a) or b) which will reliably capture a longer period around a trigger. |
| electr_peter:
Descriptions are in user guides, app notes, etc. (i.e. spread in parts all over the place). To be honest, no feature of a scope is described in detailed enough way (due to many reasons) to satisfy your needs or level of this thread. If you want all the details, do research yourself. Official list of "zoom out" scopes doesn't exist. To my knowledge, "zoom out" is available on all Keysight InfiniVision models (X1/2/3/4/6k), the new HD3 and likely all older models with MegaZoom chip (including older ones from 1990s). Other Keysight series most likely not. Some say Rigol models also have "zoom out". You don't fully understand "zoom out" function, thus are not keen on using it. That's is fine with me. Not going to argue various quote misrepresentations. |
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