Products > Test Equipment
Siglent SDS1000X HD 12bit DSO's
ebastler:
--- Quote from: Performa01 on November 04, 2023, 10:15:36 am ---What you describe will not work for long messages that use protocols with certain start/stop conditions. If you have e.g. a long I2C message and you shorten the acquisition so that you only see a part of it - and the start condition is truncated - then the decoders won't work.
--- End quote ---
Just coming back from a little bike ride, and that thought had occurred to me somewhere along the way. Thanks for confirming my suspicion -- that is disappointing indeed. Essentially means that scopes with the SLA1016 don't perform any better (in Run mode) than Rigols's DS1054Z, which decodes data from the screen only.
But you can still use Zoom mode (and get proper decoding) when the scope is in Stop mode, if I understood your 2018 post correctly, right? That would probably cover most use cases.
--- Quote ---As I've stated in some old posting, the SLA1016 is a fully independent acquisition machine with its own trigger mechanism, that is somehow synced to the DSO acquisition. Therefore I don't expect anything could have changed by now. LeCroy happened to have a similar soultion somewhere in the past, and it received equally little love by the users...
--- End quote ---
As stated a few posts ago, I can understand that there will be limitations to the triggering capability which are probably unavoidable. But Zoom and Decode happen entirely within the scope, and should work no matter where the data were acquired? So maybe the SLA1016 needs a little more love from Siglent's software developers...
Performa01:
--- Quote from: ebastler on November 04, 2023, 11:15:26 am ---As stated a few posts ago, I can understand that there will be limitations to the triggering capability which are probably unavoidable. But Zoom and Decode happen entirely within the scope, and should work no matter where the data were acquired? So maybe the SLA1016 needs a little more love from Siglent's software developers...
--- End quote ---
It might appear that way at a first glance and in theory, but for the real product there are some more considerations.
Since the SLA1016 is an autonomous acquisition unit, it is utilized pretty much like a good USB scope (e.g. Picoscope): only the already decimated screen data are transferred from the external device to the host (which is the DSO in this case). So there is just no data to further zoom in.
Yes, of course we could have a firmware change to always transfer the full data buffer content, which could be up to 28 MB. I don't know what the maximum transfer capacity of that "S-Bus" is, but if it's anything like USB2, then we would only get one single frame per second as the worst case.
ebastler:
--- Quote from: Performa01 on November 05, 2023, 09:24:59 am ---Since the SLA1016 is an autonomous acquisition unit, it is utilized pretty much like a good USB scope (e.g. Picoscope): only the already decimated screen data are transferred from the external device to the host (which is the DSO in this case). So there is just no data to further zoom in.
--- End quote ---
That makes sense, thank you!
So maybe the SDS1000X HD will not be the right scope for me after all. I certainly spend more time on digital than analog systems and was looking forward to upgrading to MSO capability. (But a less noisy front end than in my current DS1054Z would be nice too...) Ah, decisions... ::)
2N3055:
--- Quote from: ebastler on November 05, 2023, 09:58:42 am ---
--- Quote from: Performa01 on November 05, 2023, 09:24:59 am ---Since the SLA1016 is an autonomous acquisition unit, it is utilized pretty much like a good USB scope (e.g. Picoscope): only the already decimated screen data are transferred from the external device to the host (which is the DSO in this case). So there is just no data to further zoom in.
--- End quote ---
That makes sense, thank you!
So maybe the SDS1000X HD will not be the right scope for me after all. I certainly spend more time on digital than analog systems and was looking forward to upgrading to MSO capability. (But a less noisy front end than in my current DS1054Z would be nice too...) Ah, decisions... ::)
--- End quote ---
If that is so, then from Siglent SDS2000X Plus would be a good match for you. It is 8 bit but low noise and 500uV/div real sensitivity on analog and full (and fast) implementation of MSO.
Martin72:
Consent.
Buy (100Mhz), "improve" (500Mhz, MSO, etc) and should the day come when the scope is no longer sufficient, there should already have been one or two successors.
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