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| Siglent SDS800 Zoom out question (problem?) |
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| nctnico:
--- Quote from: electr_peter on October 07, 2024, 10:41:22 pm ---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". --- End quote --- Having had quite a few DSOs from various brands through my hands over the past decades, I can say that all DSOs made by mainstream brands except for true Lecroy models (not the rebadges from Iwatsu) and some older Siglent models, can zoom out (capture beyond the screen if memory length permits). IOW it would be an extreme rarity to find a DSO which can't zoom out as it is as standard like having a voltage meter on a bench power supply. This has been explained in great detail and length in a previous thread which seemed to have been 'forgotten' by some. So it is better to create a list with DSOs which can't zoom out. It will be pretty short. |
| Someone:
--- Quote from: electr_peter on October 07, 2024, 10:41:22 pm ---Descriptions are in user guides, app notes, etc. --- End quote --- If the documentation does exist are and you like the Keysight bonus capture when pressing stop, then why cant you point to the documentation of it? Actual serious question. I have made efforts to find such documentation and failed. Here is your chance to show how I'm not good at finding information and you are better at it. Share this secret knowledge for the benefit of everyone. |
| Someone:
--- Quote from: nctnico on October 07, 2024, 11:00:46 pm --- --- Quote from: electr_peter on October 07, 2024, 10:41:22 pm ---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". --- End quote --- Having had quite a few DSOs from various brands through my hands over the past decades, I can say that all DSOs made by mainstream brands except for true Lecroy models (not the rebadges from Iwatsu) and some older Siglent models, can zoom out (capture beyond the screen if memory length permits). IOW it would be an extreme rarity to find a DSO which can't zoom out as it is as standard like having a voltage meter on a bench power supply. This has been explained in great detail and length in a previous thread which seemed to have been 'forgotten' by some. So it is better to create a list with DSOs which can't zoom out. It will be pretty short. --- End quote --- Your own words on this from the mega thread that people seem to refuse to read/remember: --- Quote from: nctnico on May 08, 2020, 04:54:23 pm ---Again (4th time I'm explaining this): Keysight has changed the behaviour on the more modern models! --- End quote --- So no, not all scopes from all brands other than Lecroy and Siglent. Also some scopes from Keysight. You might argue some of those Keysight models dont zoom out (fair enough if we use your consistent definition of zoom out) and simultaneously electr_peter is claiming they do the best zoom out ever. Alternative method you both seem to get defensive about: pretty much all scopes (including the ones you separate out) can achieve a comparable result by zooming in before capturing. Anyone trying to clearly explain this gets dumped on with the pile of noise and fake argument rather than polite discourse. |
| awakephd:
--- Quote from: 2N3055 on October 04, 2024, 11:18:24 pm ---SDS800xHD has 2 memory modes: Auto and fixed sample rate. --- End quote --- I have no dog in this fight, but did want to "zoom in" on the above comment. (Yes, dreadful pun, but I can't truly say I'm sorry!) I am still learning my way around the SDS800X HD - enjoying the scope very much, and finding it to have capabilities comparable to the Keysights in the lab at the university where I teach (I don't teach in the engineering school, but I'm sitting in on an EE course) - so always interested when I see something I haven't yet noticed or understood in its capabilities. I confess I am still working my way through the manual ... slowly ... and through the massive performance and review thread that was referenced above ... slowly ... so likely the answer is there. But if anyone would like to give me a quick hint or reminder - where can I select between the auto and fixed sample rate, and when would I want to? |
| Someone:
--- Quote from: awakephd on October 08, 2024, 01:23:45 am ---But if anyone would like to give me a quick hint or reminder - where can I select between the auto and fixed sample rate, and when would I want to? --- End quote --- It is similar/related to setting the memory depth manually. For some captures you intentionally want fewer sample points, a common case is when offloading for later analysis. The scope can use its fast acquisition hardware to reduce the data to a suitable sample rate so that other systems downstream can operate faster. You could also use it to manipulate the waveform update rate if that is something you care about. |
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