Products > Test Equipment
Siglent SDS800 Zoom out question (problem?)
Someone:
--- Quote from: 2N3055 on October 04, 2024, 06:23:45 pm ---Look, you can use scope any way you want . Even stupid way. Other people will do it their way.
If you can achieve result using your way and you are happy with process good for you.
--- End quote ---
Yes, this is a big part of the fake argument. Continually pretending that other people wouldn't use features and capabilities available to them and not explaining why. Then turning it around and telling people there are only a limited number of ways to use a scope if you don't use my preferred method the other methods I describe have HUGE PROBLEMS..... while failing to mention the comparable methods.
Same thing happens with the selective comparisons some users make between brands, picking some clearly poorly matched/suited example and ignoring/rejecting the more appropriate comparisons.
thm_w:
Zoom is great but saying its optimal to use when you have a smaller 7" screen, sometimes its not. This is one trace, which is about the limit I'd want to go:
--- Quote from: Someone on October 04, 2024, 10:15:53 pm ---Capturing data around the view is an important parameter which the user should be able to choose. Adding memory around the screen reduces the waveform update rate. The nonsense claims of zero downside are plainly false.
--- End quote ---
So maybe an ideal would have two memory modes:
- Auto - Performance
- Auto - Capture area
2N3055:
--- Quote from: thm_w on October 04, 2024, 11:08:13 pm ---Zoom is great but saying its optimal to use when you have a smaller 7" screen, sometimes its not. This is one trace, which is about the limit I'd want to go:
--- Quote from: Someone on October 04, 2024, 10:15:53 pm ---Capturing data around the view is an important parameter which the user should be able to choose. Adding memory around the screen reduces the waveform update rate. The nonsense claims of zero downside are plainly false.
--- End quote ---
So maybe an ideal would have two memory modes:
- Auto - Performance
- Auto - Capture area
--- End quote ---
SDS800xHD has 2 memory modes: Auto and fixed sample rate.
Manual memory mode is reserved for higher models.
It is seriously inexpensive scope. With tons of capability. Can't have everything.
tautech:
--- Quote from: thm_w on October 04, 2024, 11:08:13 pm ---Zoom is great but saying its optimal to use when you have a smaller 7" screen, sometimes its not. This is one trace, which is about the limit I'd want to go:
--- End quote ---
Zoom this is but both Horizontal and Vertical Modes and very cool for an entry level DSO. :-+
electr_peter:
@Someone, @tautech, I respectfully would like to ask to read my posts carefully. I do not claim at all that there is some best process of how to zoom in/out to view both long and short timebase events, it is up to the user entirely. All I say is that scopes with zoom out (or more precisely, memory beyond display) are more flexible in some circumstances than scopes without this feature. Especially Keysight implementation.
Yet my clear statements are ignored to push for "zoom in is better process anyway, so why care about zoom out benefits" agenda. This shifting of focus from case of "user looks at fast timebase as a MAIN focus and decides to look at slower timebase as a secondary check" to "user needs to capture slower timebase all the time and look for full details" is tiring. In former case, zoom out capability allows not to recapture again - this fact is conveniently ignored, I wonder why? Of course, user then can go to latter case (with MAIN focus on slower timebase) where zoom in can be used straight away.
--- Quote from: Someone on October 04, 2024, 10:11:53 pm ---That is an imaginary problem that you invent and pretend like there is no possible way around it.
--- End quote ---
That is your mental gymnastics to ignore the circumstances where "zoom out" allows more options. I do not say there is no way around it, please don't put words in my mouth.
--- Quote ---
--- Quote from: electr_peter on October 04, 2024, 02:38:22 pm ---Keysight scope gives more capture memory at fast timebases or is faster in RUN mode, obvious advantage. This fact does not change if some users do not appreciate/choose to ignore it.
--- End quote ---
Expect it does NOT do that in run mode, only when you press stop and the trigger is periodic and another the trigger occurs in a brief moment after the user presses stop.
--- End quote ---
Expect that it exactly what I am saying in quoted post (plus all explanation before which you selectively ignore). To clarify for you, "Keysight scope [gives more capture memory] at fast timebases OR [is faster in RUN mode], obvious advantage." Due to automatic memory management, in RUN mode Keysight is fast with short memory, but in STOP/SINGLE mode gives full memory. You cannot do both with Siglent without changing settings all the time.
--- Quote ---Which was explained several times in the linked mega thread on this topic. Why keep posting the same things which have been debunked and shown to be incorrect so many times before?
--- End quote ---
I only stated facts which in no way were showed to be false or debunked. All I get is mental gymnastics to counter the facts and selective misquoting.
I do not claim there is some superior process of how to use scope. Some try to diminish Keysight scopes where they have slight advantage in auto memory management to improve look of Siglent scopes. Yes, advantage is there, it is small, but it is there which allows some extra flexibility. You don't have to change your process of using scope because of that.
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