[email protected] said: > With care I can measure GPS jitter on a RasPi to a bit over 300 nano sec > resolution. That is the smallest increment of the RasPi 3B clock with a > 64-bit kernel. That is clearly not time-nuts accuracy.
> What would you guys suggest as the cheapest way to see jitter down to around > 1 nano second? What do you mean by "jitter" and what do you really want to do? Jitter usually needs a reference. Do you have one? > I'm thinking maybe something like a rubidium standard (FE-5680A) and a > TICC-TAPR? But that would put me out around $400. Do you have a scope? The Rigol DS1102E is/was quite popular and is good for close to a ns. I got mine several years ago for $400. Looks like the going price is closer to $300 now. It's got a USB port. You can read the data and decode it in software. They make lots of similar scopes. The middle 2 digits are the bandwidth: 5=> 50MHz, 10=>100MHz. The last digit is the number of channels.) The chip in the BeagleBone series boards has extra CPUs that help with things like this. I don't know how fast they go. I haven't seen 64 bit versions or a lot of software activity. -- These are my opinions. I hate spam. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
