Siglent SDS800 series averaging- not? - Page 1
Forum section: electronics / testgear

author: Conrad Hoffman
author_rank: Super Contributor
timestamp: December 04, 2024, 02:09:40 pm
content: Even our bottom-of-the-line Tek scopes at work have trace averaging. I vaguely remember a range of 2-64 or similar. This can be handy for suppressing noise. The noise averages to near zero, while the signal builds up, assuming you have a solid trigger for the signal. I don't see anything like this on my Siglent. Just not an available feature? Maybe someday in a firmware upgrade? Or am I not looking in the right place?

author: tautech
author_rank: Super Contributor
timestamp: December 04, 2024, 02:13:18 pm
content: Averaging is a Math operation, you'll find it in the Math menu.

author: mawyatt
author_rank: Super Contributor
timestamp: December 04, 2024, 02:15:30 pm
content: You'll find this in the Math Functions where you can set the Average Source, Number and Scale Factor.Wonderful little DSOs these SDS800 HDs, hard to believe the performance and features for the $.You made a great choiceEdit: See Rob beat me to itYou can even do the Average of another Math function by section of the Math Function as the Source for the Average, like the Average of the C1 Squared or the Average of C1*C2 (Handy for Power Measurements).Here's an example of the Average of C1*C1 of a complex waveform captured by C1.Best

author: 2N3055
author_rank: Super Contributor
timestamp: December 04, 2024, 02:58:27 pm
content: You can also create complex math formulas in single math channel - it has formula editor.

author: Conrad Hoffman
author_rank: Super Contributor
timestamp: December 04, 2024, 04:31:09 pm
content: Thanks! I kept thinking it would be under Acquire.

author: 2N3055
author_rank: Super Contributor
timestamp: December 04, 2024, 04:53:22 pm
content: Quote from: Conrad Hoffman on December 04, 2024, 04:31:09 pmAnd that would not be wrong thinking.Upper models do have additional acquisition modes ERES (Hires of a sort) and Average as acquisition mode, in addition to have it as a math mode.Advantage is it is a bit faster, but if you use it as acquisition mode, then it applies to all channels and you have no original waveform.When you apply ERES or Average as math, you can it individually on each channel, and you have original data too.So even when scope is stopped, you can, for instance, change ERES parameters post stop to tune in best result.In practice, I use ERES and Average as math channel most of the time, even on scopes that support it as acquisition mode, because of those reasons.

author: mawyatt
author_rank: Super Contributor
timestamp: December 04, 2024, 05:14:55 pm
content: Quote from: 2N3055 on December 04, 2024, 02:58:27 pmYes the Formula Editor is a very powerful feature that seems to be often overlooked. With a modern AWG one can create all sorts of interesting results with the various waveforms available from the AWG and all the mathematical manipulations from the Formula Editor. This goes far beyond the common FFT that most DSOs have today, altho the SDS800X HD has really nice useful FFT, not just a toy implementation.It's fun to actually "see" waveforms in real time of complex mathematical functions/formulas and such rather than on a computer screen as an uninspiring graph. Similar in fashion to having a circuit simulation and actually building such, and making physical measurements.Best

author: tautech
author_rank: Super Contributor
timestamp: December 04, 2024, 10:09:18 pm
content: Quote from: Conrad Hoffman on December 04, 2024, 04:31:09 pmAs was traditional.But then all channels get averaging applied.800X HD has 4 Math channels that can be applied including Math on Math.But things get crowded quickly but we have the ability to Hide any channel so to only have the remaining ones we need.We can also set our measurements to any of the Math channels.Much info on their capabilities can be found in this thread:https://www.eevblog.com/forum/testgear/sds800x-hd-review-demonstration-thread/Have fun exploring these powerful little DSO's.

author: Conrad Hoffman
author_rank: Super Contributor
timestamp: December 05, 2024, 01:25:53 am
content: Have played with the averaging- like it better than the Teks!