Products > Test Equipment
Siglent SDS1000X HD 12bit DSO's
2N3055:
--- Quote from: robert.rozee on April 03, 2023, 12:20:29 am ---
--- Quote from: Martin72 on April 02, 2023, 10:13:10 pm ---https://www.electronicdesign.com/technologies/test-measurement/article/21805339/whats-really-the-difference-between-a-12bit-and-8bit-oscilloscope
--- End quote ---
good article, although i was a little puzzled by this part:
"Most modern, mid-range oscilloscopes include a high-resolution mode, which increases the number of bits by filtering. In essence, bandwidth is traded off for the increased dynamic range. Basically you get one additional bit for each halving of the scope’s bandwidth. Therefore, to achieve a 4-bit increase, it would reduce the scope’s bandwidth by 16:1. So if you start with a 1-GHz scope, increasing the resolution to 12 bits with the high-resolution mode would reduce the scope’s bandwidth to below 100 MHz."
my understand was that for each ONE bit increase, it required 4x oversampling, leading to a bandwidth [addendum: i should probably be talking about 'sample rate' here, not 'bandwidth'] reduction of 256:1 to get the extra 4 bits. perhaps we are instead seeing 10-bit ADCs being used with a further 2 bits then obtained in software to give us the final 12 bits. i shall need to research this point some more - if the author is correct then i have a few (abandoned) projects i need to revisit!
he does present one example, a decaying ringing, that nicely illustrates a useful application, and i guess if this sort of example dominates your area of interest then a 12-bit scope would be a time-saver. however, i could see that with the right setup the same level of detail could be captured with two 8-bit channels each set for different vertical scales (once over-driving issues were eliminated).
you are right, that in the end it comes down to balancing budgets and individual user cases. and as always, any advances will filter down over time into even the lowest end of the market. essentially, a 12-bit scope is one step towards replacing the venerable 3½-digit multimeter on one's workbench. but for today, at what cost?
cheers,
rob :-)
addendum (a day later) see text in bold red above
--- End quote ---
When you do Hi Res in software, actual BW is reduced. It works by basically enabling digital low pass filter. So you get smaller effective sample rate (less points in time interval) and digitally filtered lower BW...
Both is less. That is opposed to simply reducing sample rate where you only get less points.
thm_w:
--- Quote from: ojete on April 01, 2023, 01:09:58 pm ---The resolution of the screen is pretty low, no hdmi or video output of any kind, no wifi.
Having to use an external signal generator makes it more expensive, not cheaper.
I was waiting for Siglent to release the competition of the rigol dho1000 but this is not very tempting.
As with the dho1000 the only good thing are the 12 bit.
--- End quote ---
Anyone considering a 12 bit scope would likely already own an external sig gen of better capability than you can bundle in. If this were a $400 entry level scope I would understand your point.
--- Quote from: tautech on April 03, 2023, 07:43:33 am ---
--- Quote from: baldurn on April 03, 2023, 12:54:54 am ---Also looks like the new SDS1000X-HD is getting the new "glass cockpit". I know it is the same UI etc but I think it looks nicer :-)
--- End quote ---
What does that actually mean, you've lost me what a glass cockpit has to do with a DSO ? :-//
--- End quote ---
I think they just mean glass cockpit = less physical buttons and more use of the touch screen.
Compared to sds1000x 36 buttons this has cut it to 23 buttons. Same 6 knobs but placed closer together.
Just personal preference. I would probably go with the larger screen.
Martin72:
If the housing is really the same as the 2000X HD, then it will be in superb quality.
I like it a lot on my SDS2000X HD, also the rotary knobs/encoders with their "clicking sound".
Display should be also the same, then the probesensed 1M/50ohm inputs...
I´m very curious about the entry-price.
tautech:
--- Quote from: thm_w on April 03, 2023, 10:19:04 pm ---
--- Quote from: tautech on April 03, 2023, 07:43:33 am ---
--- Quote from: baldurn on April 03, 2023, 12:54:54 am ---Also looks like the new SDS1000X-HD is getting the new "glass cockpit". I know it is the same UI etc but I think it looks nicer :-)
--- End quote ---
What does that actually mean, you've lost me what a glass cockpit has to do with a DSO ? :-//
--- End quote ---
I think they just mean glass cockpit = less physical buttons and more use of the touch screen.
Compared to sds1000x 36 buttons this has cut it to 23 buttons. Same 6 knobs but placed closer together.
Just personal preference. I would probably go with the larger screen.
--- End quote ---
Yep, that makes sense I guess.
I use the 1000X-E and these touch screen DSO lots and each has ways to best utilise them however nothing compares with the larger touch screen display when you add a mouse.
When you have 3 user input methods after some little practice to find/discover most efficient usage methods throughput is dramatically improved but it does take a little while to discover all the features the GUI offers like hidden virtual keyboards and mouse scroll wheel support.
I imagine this new 1kX HD model will include all the GUI features of its big brothers, SDS5000X, SDS2000X Plus, SDS2000X HD and SDS6000A.
BillyO:
I want one. It would make a perfect side-kick to my SDS2504X-P.
Is anyone interested in s slightly used 6 moth old SDS1104X-E (fully liberated)?
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