> My test methodology was to feed 10 MHz from one of my GPSDOs into the TIA > reference and the same 10 MHz into the device input. I then had the TIA > perform period measurements with a 10 second gate. The result was 1 second, > ± maybe a dozen or two ps on average, but again, thatâs where the limits of > my TIA (Keysight 53220A) lie.
Another approach is to use the delay option on a scope. Trigger on your PPS, then look at the next one. You probably need to do a sanity check on the scope (aka crudely calibrate) by looking at a known-good PPS. -- These are my opinions. I hate spam. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
