Products > Test Equipment
Scope with fast waveform averaging (can your scope go faster?)
<< < (7/8) > >>
maxwell3e10:

--- Quote from: LaurentR on August 10, 2022, 03:59:36 pm ---
--- Quote from: maxwell3e10 on August 10, 2022, 12:43:25 pm ---What was the waveform length for these measurements? That could have an effect on the speed.

--- End quote ---

--- End quote ---
Someone:

--- Quote from: maxwell3e10 on August 10, 2022, 01:08:38 pm ---
--- Quote from: tchiwam on August 10, 2022, 01:03:48 pm ---Record in a long buffer then download the wave and make the averaging yourself ?
--- End quote ---
No, that defeats the whole purpose of a scope to look at signals in real time and diagnose things based on small features in averaged signal.

--- End quote ---
Averaging without a trigger defeats the whole purpose of averaging....
maxwell3e10:
Yes, in most cases that's true, when measuring a fast signal. But in this case it doesn't matter (assuming auto trigger is fast enough), because the signal is very slow. Think of it as a kind of box-car high-resolution averaging.

Still curious what is the waveform length LaurentR used. I haven't used a 3000T. Does it just default to auto length equal to number of points displayed on the screen?
maxwell3e10:
According to the manual, 3000T uses waveform length to fill the screen or half the working memory, it's not so clear. On my EDUX1002 it uses 50k points all the time in run mode independent of time scale and 100k points in single shot mode. In single shot mode with averaging on it is supposed to do just one set of N averages and stop.

I am leaning toward Rigol 7000 series scope, it's likely to have one of the fastest averaging for a scope under $10k, new or used. Having long memory would help if one has to resort to downloading the data.
JehTeh:
On the rigol front, I was playing around more with my 8k this morning and trying to see if I could hit the 600k trigger rate, but I have been having no luck. The baby rigol watching trig out is seeing ~110k max. Interestingly whether I have averaging on or not seems to make no difference (200ps/div, 20pt 'auto' memory - all settings from 1k averages to 64k show same trigger rate).

Scope is supposed to do 600k/s but I am not sure under exactly what circumstances, would be interesting to actually get it there and see if turning on averaging makes a difference.

Navigation
Message Index
Next page
Previous page
There was an error while thanking
Thanking...

Go to full version
Powered by SMFPacks Advanced Attachments Uploader Mod