Products > Test Equipment
Siglent SDS2000X Plus - Bugs / Missing Features / Feature Requests
tautech:
--- Quote from: rf-loop on December 04, 2023, 03:02:49 pm ---
--- Quote from: Slartibartfast on December 04, 2023, 02:46:52 pm ---
--- Quote from: rf-loop on December 04, 2023, 01:58:44 pm ---And if we want make better.
Oscilloscope decoder need have more settings for signals.
Now there is only one threshold for one signal.
--- End quote ---
Sorry, that was my mistake. There are indeed two settings, separate for CK and D. But I share your opinion
--- End quote ---
No, there IS only one threshold for one signal in SDS2000X Plus, SDS2000X HD and many other Siglent oscilloscopes (and many others too). Example SCL (this is one signal in my context) have just one threshold. Can not define threshold for High state level and Low state level.
Here's an example of how NXP says general information related to their stuff and views on I2C definitions.
--- End quote ---
Yet we can define the logic type/level when in Digital mode.
Maybe a small range of choices need be added for analogue decoding too ?
Something we need take to the Siglent forum ?
Performa01:
--- Quote from: Slartibartfast on December 04, 2023, 02:35:03 pm --->:D Rookie's method (trial and error) to set up the decoding? >:D
I prefer to use an informed choice for the thresholds.
--- End quote ---
Didn’t expect that my words could be misinterpreted so badly (on purpose?) ::)
What I meant was of course that we set up the decoding first, including baud rate, polarity, idle level or whatever applies to the protocol in question, then test it and only when it runs okay, copy the settings to the trigger. I was talking about serial decode in general and the fact that I2C doesn’t have any specific settings apart from the R/W-bit inclusion is irrelevant here.
One can always make some mistake, such as wrong signal connections or inappropriate threshold levels. It is sensible to test this before happily copying to the trigger and just hoping that everything works and the scope will trigger on the right message…
--- Quote from: Slartibartfast on December 04, 2023, 02:35:03 pm ---On the issue of the default path: Pages 312 to 314 each show a menu that has the option "Save Path" or "Recall Path" with "Internal" and "External". These options do not exist on my scope. When saving/recalling via mouse or on-screen-finger one can choose this via the file manager. This does not work, though, when hitting the PRINT button. So, concrete question: How do I set the scope up such that after powering up, without messing with menus first (i.e. by default), hitting PRINT saves the screenshot in a particular folder, that is not called 'SIGLENT', on the thumb drive?
The page you're mentioning explains all a sort of things by using menus. It does not explain how to set up defaults. In fact, the only sentence in the manual where the word 'default' refers to a path, is "The default save path is \SIGLENT\." (Page 318 EN01D)
--- End quote ---
It might not be brilliant in a didactical sense, yet you just should have sticked to the page I’ve referred to.
It simply works as follows:
In the SAVE menu, you select the appropriate type (PNG), image style and menu inclusion and then you launch the File Manger:
SDS2354X_Plus_File Manager
Now you see the internal memory (local) as well as any externally plugged thumb drives (U-disk). You select the external U-disk here. There is no internal/external switch – don’t know where this error in the manual comes from, since to the best of my knowledge it has never worked any different to what it does now.
Now you select the U-disk, navigate and subsequently use the “New Dir” command to create a new folder wherever you want with whatever name you like, then navigate into that folder and save the PNG file under an arbitrary name that you like. Bingo!
This very first screenshot will be saved just with the name you’ve typed. All subsequent screenshots (initiated by the blue “Print” or “Save” button will go to the same folder and have the same filename, but get a sequence number appended. The sequence number starts with “2” in this special case; after emptying the screenshot directory on the PC, sequence number will be reset to “1”.
Custom Screenshot Save Path
If you forget to plug your U-disk in, the scope automatically stores to the internal memory. If it was a precious, irreplaceable screenshot, then you can insert the U-disk and copy the file using the File Manager. Otherwise, you can just delete it – or leave it where it is until you run out of internal memory one day...
Slartibartfast:
--- Quote from: rf-loop on December 04, 2023, 03:02:49 pm ---
--- Quote from: Slartibartfast on December 04, 2023, 02:46:52 pm ---
--- Quote from: rf-loop on December 04, 2023, 01:58:44 pm ---And if we want make better.
Oscilloscope decoder need have more settings for signals.
Now there is only one threshold for one signal.
--- End quote ---
Sorry, that was my mistake. There are indeed two settings, separate for CK and D. But I share your opinion
--- End quote ---
No, there IS only one threshold for one signal in SDS2000X Plus,
--- End quote ---
I guess there is a misunderstanding at work here. If by "one threshold for one signal" you mean "one threshold per signal" then we're in sync. In an earlier posting I stated falsely that there is only one threshold that applies to both signals. I had thought you were referring to that.
Slartibartfast:
--- Quote from: Performa01 on December 04, 2023, 05:28:57 pm ---
--- Quote from: Slartibartfast on December 04, 2023, 02:35:03 pm --->:D Rookie's method (trial and error) to set up the decoding? >:D
I prefer to use an informed choice for the thresholds.
--- End quote ---
Didn’t expect that my words could be misinterpreted so badly (on purpose?) ::)
--- End quote ---
Well, since I'm used to well-informed postings from you I suspected that what you wrote was not exactly what you meant. That's why I used two flashy devil smileys to make it very clear that I wasn't serious.
Didn't expect that two such smileys in those locations aren't enough to make that obvious.
--- Quote ---What I meant was of course that we set up the decoding first, including baud rate, polarity, idle level or whatever applies to the protocol in question, then test it and only when it runs okay, copy the settings to the trigger. I was talking about serial decode in general and the fact that I2C doesn’t have any specific settings apart from the R/W-bit inclusion is irrelevant here.
--- End quote ---
What you write here I indeed cannot find in your original words, at least not with my (admittedly very limited) capability of english understanding.
Be that as it may, however, "copy the settings to the trigger" does not make too much sense, IMHO. Even if I couldn't see the edge I want to trigger on beforehand, I'd still know the two digital logic levels, and can choose the trigger level from that. And then of course you're right saying that some glitches may necessitate tweaking the trigger level a bit. But this is also why I prefer to choose levels independently: In order to find some rogue glitches I'd need exactly such a threshold as I avoided to use for the decoder, to avoid upsetting it by the same glitches.
--- Quote ---One can always make some mistake, such as wrong signal connections or inappropriate threshold levels. It is sensible to test this before happily copying to the trigger
--- End quote ---
Apart from trying out I have never used that copying function. In addition to making limited sense (as I wrote above), I'm also far faster just rotating the trigger level knob versus clicking through menus to reach that copying function.
--- Quote ---
--- Quote from: Slartibartfast on December 04, 2023, 02:35:03 pm ---On the issue of the default path: Pages 312 to 314 each show a menu that has the option "Save Path" or "Recall Path" with "Internal" and "External". These options do not exist on my scope. When saving/recalling via mouse or on-screen-finger one can choose this via the file manager. This does not work, though, when hitting the PRINT button. So, concrete question: How do I set the scope up such that after powering up, without messing with menus first (i.e. by default), hitting PRINT saves the screenshot in a particular folder, that is not called 'SIGLENT', on the thumb drive?
The page you're mentioning explains all a sort of things by using menus. It does not explain how to set up defaults. In fact, the only sentence in the manual where the word 'default' refers to a path, is "The default save path is \SIGLENT\." (Page 318 EN01D)
--- End quote ---
It might not be brilliant in a didactical sense, yet you just should have sticked to the page I’ve referred to.
It simply works as follows:
--- End quote ---
Why should I have assumed that what you choose in the file manager also applies to the PRINT button, let alone surviving a reboot? To me, this is far from obvious. IMHO it flies in the face of user interface good practices, because it is not intuitive. Brilliant or not, the manual just does not have this information.
I will play with that a bit tomorrow.
--- Quote ---There is no internal/external switch – don’t know where this error in the manual comes from, since to the best of my knowledge it has never worked any different to what it does now.
--- End quote ---
I beg to differ. I have a fairly clear memory of having played with that menu entry. Maybe you never used it because you found out early what you're describing here?
2N3055:
--- Quote from: Slartibartfast on December 04, 2023, 09:54:34 pm ---
--- End quote ---
I use copy to trigger and back quite often.
It not only copies levels, it does it for all the signals and also signal to channel assignments and other parameters.
For full SPI that is 4 channel assignments and level for each.. and other settings..
I connect, capture single, set timebase, capture again, go to decode, setup signal connections and levels. Once I get meaningful result, copy to trigger. No need to set 10 parameters again.
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