3405D Capturing nonexistent spikes

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Zuccj
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3405D Capturing nonexistent spikes

Post by Zuccj »

I have a 3405D and using it to capture a dc wave. The issue I am having is that on every rising and falling edge there is a spike that it displays as well. I have had the signal hooked up to a traditional scope, and the picoscope at the same time, and the spikes are only present on the picoscope. I've played around with adding a capacitor before the picoscope to attempt to filter out the spikes, but that doesn't effect the results in anyway. Is there something special that is needed with the picoscope to prevent the spikes?
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Martyn
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Re: 3405D Capturing nonexistent spikes

Post by Martyn »

Can you send a psdata file to support@picotech.com so that we can see the issue and also the setup of the scope. It would also be useful to know the exact setup of the traditional scope.
Martyn
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bennog
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Re: 3405D Capturing nonexistent spikes

Post by bennog »

I expect you are measuring square wave signals.
Last week I stumbled on the below video explaining overshoot and importance of probe configuration.

https://www.youtube.com/watch?v=zodpCuxwn_o

Benno
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