EEVblog Electronics Community Forum

Products => Test Equipment => Topic started by: Chumanista on November 06, 2016, 02:10:14 pm

Title: Is it possible to trigger from the math channel on the Rigol DS1054Z?
Post by: Chumanista on November 06, 2016, 02:10:14 pm

Hi!
I have a really noisy input that needs a low-pass filter before it becomes usable (a lot of noise).
Because of external rules I cannot use any external parts.
Is there any way to do it? I googled but couldn't find anything.

Title: Re: Is it possible to trigger from the math channel on the Rigol DS1054Z?
Post by: JPortici on November 06, 2016, 02:15:51 pm

you wish! you can however apply a filter to the trigger itself. in your case, select HF rejection on the trigger coupling

Title: Re: Is it possible to trigger from the math channel on the Rigol DS1054Z?
Post by: Chumanista on November 06, 2016, 02:17:57 pm

I do wish indeed. The math option is so nice. I don't need a lot of resolution, so I could just record 5s to memory and filter it in Excel, but triggering of the already working function would be SO NICE. Why is it impossible? Calculation limitations?

Title: Re: Is it possible to trigger from the math channel on the Rigol DS1054Z?
Post by: JPortici on November 06, 2016, 02:26:47 pm

math is calculated from on screen data, not from acquisition memory (even on much better scopes, unfortunately)

Title: Re: Is it possible to trigger from the math channel on the Rigol DS1054Z?
Post by: JPortici on November 06, 2016, 02:28:45 pm

depending on your actual signal you can work out different ways to produce a more stable trigger. though i'm used working only with edge and pulse/window and by adjusting the holdoff