Press the "Meas" button, add some measurements to a waveform, and select Statistics. Set the Max Count value to 100. The scope won't stop collecting statistics even when the Max Count value reaches 100. The values for Current, Mean, Min, Max, Std Dev continue to update.
Scope Firmware level =4.08.2016071800
Anybody else notice this?
The "Max Count" value limits the number of values used in calculating the measurement statistics, so it calculates statistics on the last 100 values. If the oscilloscope continues making acquisitions, the statistics continue to update.
Best Regards,
Pat
OK -I think I get it. That subtlety is not documented that well in the help screen or user's guide
For the example given, after the initial 100 samples are acquired, does the statistics then do "rolling" statistics where it will use the most recent 100 samples and update the stats after every acquisition or does it update the stats after every successive 100 samples? I suppose if I want to capture a specific set of 100 acquisitions and apply the stats only to those samples, then I could use segmented memory and apply the stats to those samples. Is that accurate?
-Bob
Sounds good. Thanks for the fast replies.
Yes, it is a rolling average with the 100 most recent samples, updated after every acquisition. You can see it more clearly when doing successive single acquisitions.
Yes, you can acquire to 100 memory segments and get the statistics for just those acquisitions. The max count could be returned to infinity--you still get the statistics for the 100 segmented memory acquisitions.
Best Regards,
Pat
Yes, it is a rolling average with the 100 most recent samples, updated after every acquisition. You can see it more clearly when doing successive single acquisitions.
Yes, you can acquire to 100 memory segments and get the statistics for just those acquisitions. The max count could be returned to infinity--you still get the statistics for the 100 segmented memory acquisitions.
Best Regards,
Pat