Products > Test Equipment

Zooming *IN* [actually: signal reconstruction]

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2N3055:

--- Quote from: balnazzar on October 23, 2022, 12:43:15 pm ---
--- Quote from: tautech on October 22, 2022, 06:35:09 pm ---
--- Quote from: bdunham7 on October 22, 2022, 03:03:43 pm ---
--- Quote from: balnazzar on October 22, 2022, 02:39:22 pm ---At this point i feel obliged to ask: why manufacturers don't release scopes with more mem depth. They seem to be on the verge of generous with other specs (see indeed rigol with sub-1k$ 350 MHz 8 GSa/s), but memory depth is almost always the weak point of accessible scopes..

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How much do you want?  Current model entry level DSOs have an astounding amount of memory compared to older current models, even those from A brands.

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FTFY

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That's true. If only lower-status brands would care to do a lot of other things better, they'd become the new A-brands.

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That is weird and false statement.

Siglent and Rigol are for years not doing MUCH better than ANY A brand in area of less than 2000 USD scopes.
They have same quality and reliability and loads of features more than big brands.
It is only that there are many people out there who expect unrealistic things, disrespecting how much effort goes into making things.

And when, for instance, Siglent makes new SDS2000X HD that is better in its class than anything from A brands, they complain it is expensive.. While when Keysight asks you same money for a scope that just looks funny next to it than it is money "well invested" into good brand...
 

balnazzar:

--- Quote from: 2N3055 on October 23, 2022, 01:50:47 pm ---
That is weird and false statement.

Siglent and Rigol are for years not doing MUCH better than ANY A brand in area of less than 2000 USD scopes.
They have same quality and reliability and loads of features more than big brands.
It is only that there are many people out there who expect unrealistic things, disrespecting how much effort goes into making things.

And when, for instance, Siglent makes new SDS2000X HD that is better in its class than anything from A brands, they complain it is expensive.. While when Keysight asks you same money for a scope that just looks funny next to it than it is money "well invested" into good brand...

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First of all, you shouldn't mark as false statements other people's opinions.

A few days ago a SDS5000 got stuck in my hands and never recovered. Now it shows the spash screen every time you tried to boot it. I was just probing a small circuit stimulated at 200mV.

Second, I sometimes I use scopes from A-brands (Agilent) at the lab, and they are quite different (not sure about the price range because they are no longer in production). The difference is remarkable.

Third, this thing that one tells how he thinks and you scream disrespecting here and there has to stop. Some people think that Siglent and Rigol are built down to a price, while KS, Tek, etc are built to last.
Other people think that they are equivalent, and the big brands rip you off by making you pay for their name. And even if it was exactly so, nothing wrong with that, because paying a premium for a brand that is old and has built a solid reputation across decades is perfectly normal in any kind of manufacturing domain. Is it OK to pay 1 million for a Ferrari when a Dacia can bring you from A to B all the same (well, kind of..)? It's up to each individual to decide. It's not that people who buy the Ferrari are idiots. Or if you want a more realistic analogy, put a BMW in place of the Ferrari.

Stop patronizing people for their opinions. You should just tell them that you think differently, and articulate your thoughts.

Fungus:

--- Quote from: balnazzar on October 23, 2022, 05:16:04 pm ---Some people think that Siglent and Rigol are built down to a price, while KS, Tek, etc are built to last.

--- End quote ---

If only there was some sort of explanation:




noisyee:

--- Quote from: balnazzar on October 22, 2022, 02:39:22 pm ---At this point i feel obliged to ask: why manufacturers don't release scopes with more mem depth. They seem to be on the verge of generous with other specs (see indeed rigol with sub-1k$ 350 MHz 8 GSa/s), but memory depth is almost always the weak point of accessible scopes..

--- End quote ---

Nowadays most scope equips with more than enough memory. Few Mpts to tens of Mpts is a good trade-off between response speed and available sampling rate at long time base.
I had used some top class scopes with hundreds of Mpts memory, but only enable it at specific case. Like debugging high-speed data bus, in which case I want to capture as many packets as possible while keeping enough sampling rate. The response time is horrible: just take a cup of tea while waiting the scope processing it's data. So you MUST relay on proper trigger set-up, not a good luck, to capture what you want which again is a time consuming work. |O
So why bother significant slow down while in most case you don't need GSPS at ms/div. Needless to say entry level scopes don't have the power to analysis full data at large memory depth. You don't want to capture a large frame and then zoom in to find what you want, trust me. :-DD

balnazzar:

--- Quote from: noisyee on October 24, 2022, 01:37:47 am --- Needless to say entry level scopes don't have the power to analysis full data at large memory depth. You don't want to capture a large frame and then zoom in to find what you want, trust me. :-DD

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Indeed! (About both your statements).

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