[email protected] said: > * You might have any possible phase relationship between the two > signals. If they are exactly related by a 10^7 ratio, it's possible > for the 1 PPS edges to exactly coincide with the 10 MHz edges. > Depending on the type of gating circuit, you will have jitter and > possibly metastability resolving whether which edge occured first. ...
> * To stay away from such problems, most precision counters add a small > amount of controlled jitter (phase modulation) to the clock. ... My experience with metastability is that it's really hard to make it happen. Are the clock and data in a good lab setup really stable enough to make metastability a problem? How much does the added jitter screw up measurements where it isn't needed? -- 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.
