Hi, I've a digital signal which at a certain point stops working (it doesn't change anymore) and I'd like to capture the latest period of time (let's say 10 microsec) until the last edge, in order to see what happened before it stopped. I tried with "repeat" trigger mode but I'm not sure it does what I need. I want to be sure that what I see in the waveform is the latest part, without missing anything.
How should I do?
Regards
Pupillo
howto capturing edge until the last one
Re: howto capturing edge until the last one
It would be helpful to see what the signal looks like, a sketch will do, if you can't capture with the scope.
Please let us know which scope you have as well.
Please let us know which scope you have as well.
Martyn
Technical Support Manager
Technical Support Manager
Re: howto capturing edge until the last one
Hi,
it's a simple MOSI output from an SPI bus with a clk running at 12Mhz. So, 0 / 3.3v . Very good signal, no noise. As the clk is at 12mhz, my signal can change as often as 1/12Mhz.
Regards
Pupillo
it's a simple MOSI output from an SPI bus with a clk running at 12Mhz. So, 0 / 3.3v . Very good signal, no noise. As the clk is at 12mhz, my signal can change as often as 1/12Mhz.
Regards
Pupillo
Re: howto capturing edge until the last one
Sorry, I was forgetting, my scope is a 3206D
Regards
Pupillo
Regards
Pupillo
Re: howto capturing edge until the last one
Sounds like you need to use one of the two Dropout triggers from the Advanced Trigger menu.
Martyn
Technical Support Manager
Technical Support Manager