PicoScope 7 Automotive
Available for Windows, Mac, and Linux, the next evolution of our diagnostic scope software is now available.
Sample Rate Limiting
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ashtray1987
- OneWave
- Posts: 48
- Joined: Tue Jul 25, 2017 11:52 am
Sample Rate Limiting
Hi Guys,
Is there any way to improve the efficiency of the sample rate when capturing digital signals.
For example, digital input oscilloscopes required only very low sample rates to capture a clean waveform i.e. CAN bus. That way we can spread the memory depth over many more screens. What I don't want to capture is meaningless noise, but I don't want toblerone shaped CAN frames
Is there a way to do this with a 4425? Would bandwidth limiting have any effect, or is it only possible by limiting the sample rate?
Appreciate if you have any feedback.
P.S. Add Picoscope Mixed Signal Oscilloscope to the wish list.
Thank you
Ash
Is there any way to improve the efficiency of the sample rate when capturing digital signals.
For example, digital input oscilloscopes required only very low sample rates to capture a clean waveform i.e. CAN bus. That way we can spread the memory depth over many more screens. What I don't want to capture is meaningless noise, but I don't want toblerone shaped CAN frames
Is there a way to do this with a 4425? Would bandwidth limiting have any effect, or is it only possible by limiting the sample rate?
Appreciate if you have any feedback.
P.S. Add Picoscope Mixed Signal Oscilloscope to the wish list.
Thank you
Ash
Re: Sample Rate Limiting
You will need to sample at 8-10x the baud rate for good CAN reconstruction.
Here is an example of the insane power of the 4425 on CAN:
https://www.autonerdz.com/cgi/yabb2/YaBB.pl?num=1265231719/90#100
Here is an example of the insane power of the 4425 on CAN:
https://www.autonerdz.com/cgi/yabb2/YaBB.pl?num=1265231719/90#100