Products > Test Equipment
Oscilloscope Zoom Out Quirk
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nctnico:

--- 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. All the lower level logic is already present in the hardware and software. It is a UI change only.  If Siglent makes this simple modification then they have a nearly ideal scope.

And for sure you can go raving on about other features but please read back to my 'wide turning circle car' example. Different people have different needs. I rarely (close to never) use search so for me this is not a deal breaker. However I'm not going to ridicule you for 'search on protocol decoding' being a deal breaker for you. I respect your needs so please respect mine. For me no 'zoom out' is a deal breaker because I use it often. Als note that I have owned a Siglent scope and not having the 'zoom out' mode enabled permanently annoyed the hell out of me.
Fungus:

--- Quote from: nctnico on March 05, 2021, 11:56:07 am ---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 ---

Yep. No changes are needed at all. If it can capture the full memory when it's zoomed out then it can capture the full memory when it's zoomed in. No parameters have changed.

It's probably more work to not fill the whole memory.
2N3055:

--- Quote from: nctnico on March 05, 2021, 11:56:07 am ---
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. All the lower level logic is already present in the hardware and software. It is a UI change only.  If Siglent makes this simple modification then they have a nearly ideal scope.

And for sure you can go raving on about other features but please read back to my 'wide turning circle car' example. Different people have different needs. I rarely (close to never) use search so for me this is not a deal breaker. However I'm not going to ridicule you for 'search on protocol decoding' to be a deal breaker for you. I respect your needs so please respect mine.

--- End quote ---

I'm not raving when it's facts. Unfortunately, it is hard for me to express myself very concisely in a foreign language. So I do generate lots of words.. Sorry for that.

You cannot ridicule me for  for 'search on protocol decoding'  because that is valid point and very much important. What you propose is special case of optimization that is, while can be nice in your specific case , which I agree, is not a deal breaker, because it can be accomplished to the full if you sacrifice a little bit of (very large) screen.  Not being able to do something at all and being able to do something but with small compromises is a big difference. Big difference.
Is it ideal ? No. Would it be nice if they did this? Sure.
I couldn't care less, but they would gain potential new customers that do care. Win-Win.
But as thousands of buying customers that voted with their money show, it isn't a priority. They can't make them as fast as they sell.. So obviously, it is not a big deal.

I'm not ridiculing you. After lengthy discussion before, when I finally understood what you meant about this, I did concur that it might have merit in some cases, and that it is a valid request. But I do not consider it basic requirement, but more of refinement. For the record, my opinion was to add it if possible. Just, not very high priority, because it is scope in active development and some other stuff is higher priority. That is all.

And I'm sure that Siglent will be pleased with your comment: " If Siglent makes this simple modification then they have a nearly ideal scope." That is actually a big compliment, coming from you, as a user with vast experience and who is sometimes very particular about details. If that is all needed to be added, that means they are on a very good path. And once they get to it to add this too, they will have very, very good product.

Stay safe,

Sinisa
tv84:

--- Quote from: 2N3055 on March 05, 2021, 12:26:13 pm ---That is actually a big compliment, coming from you, as a user with vast experience and who is sometimes very particular about details.

--- End quote ---

Totally agree there. I would say the strongest I've ever seen from nico regarding Siglent. :)

Even tautech will start coding...
tautech:
And pigs might fly.
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