Products > Test Equipment
Siglent SDS1104X-E and SDS1204X-E Mixed Signal Oscilloscopes
Performa01:
--- Quote from: Willem2018 on December 01, 2023, 02:43:26 pm ---Hello I am looking for an measurement tool on my Siglent SDS1104X-E to automatically count edges for a time interval between a specified start-point and end-point.
I can't find such an option. Is this possible or can it be implemented by Siglent?
--- End quote ---
Unfortunately, the SDS1000X-E series DSOs are somewhat limited when it comes to math and measurements. They support gated measurements, but cannot count edges. SDS2000X Plus and above offer more in this regard and count edges and pulses. The same goes for the upcoming SDS800X HD and SDS1000X HD.
I'm not sure Siglent will be putting much effort to add new features to a six year old product, yet it never hurts to place a wish, which I've done right now...
Performa01:
--- Quote from: Gridstop on December 09, 2023, 11:02:42 pm ---Can anyone explain the weird jumps in channel skew (like hundreds of uS) when changing vertical gain on one channel on my SDS1104XE?
--- End quote ---
Yes. It's just input stage overloading.
Other than ancient low bandwidth oscilloscopes, most modern instruments utilize a split path input buffer. When overloaded, the LF path will cleanly clip, but the HF path differentiates and generates a DC component, which causes weird signal distortions and level shifts.
It's a basic rule for DSOs that you cannot trust any results as soon as the amplitude of a signal exceeds the screen borders.
As long as the input signal never exceeds +/-1 V (taking the vertical offset into account!), there shouldn't be too much of a problem, even when you view it at 1 mV/div vertical gain. But any input signal outside that window will definitely cause problems (as long as you don't view it at a proper vertical setting where no part of the signal is outside the visible screen area).
Solution: use a probe with more attenuation, e.g. 100x instead of 10x, to keep the input signal within that magical +/-1 V range.
Gridstop:
Thanks! You're right of course. I was thinking just in terms of gain/scaling, not the absolute input limit when it shifts to the lower voltage range. Switching the micsig to 100x fixed the problem right away and I can still turn up the gain to get a nice vertical line to measure off of.
Performa01:
--- Quote from: Willem2018 on December 01, 2023, 02:43:26 pm ---Hello I am looking for an measurement tool on my Siglent SDS1104X-E to automatically count edges for a time interval between a specified start-point and end-point.
I can't find such an option. Is this possible or can it be implemented by Siglent?
--- End quote ---
Yes ... we'll very likely get that with the next firmware update.
Even though the SDS1000X-E series will soon be obsolete because of the new SDS800X HD (which of course has the much more complete set of measurements inherited from its bigger siblings, including pulse and edge count), we will still get some maintainance for the X-E series.
pope:
--- Quote from: Performa01 on January 07, 2024, 07:25:04 am --- we will still get some maintainance for the X-E series.
--- End quote ---
That will be great considering how many of these scopes exist out there. A kind of win-win situation. After-sales support it's a big plus for both the user and the brand.
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