Check oscillator/Xtal accuracy - how to?

[Bruce]

Well, since the PICs accuracy is totally dependent on the external crystals accuracy, I
would suggest you look into what Melanie posted above...;o}

A freq counter will do the trick as long as you're not loading the oscillator.

If Melanie says it works, you can normally take that to the bank, and be done with it.

She knows her stuff..;o}