[time-nuts] 5370 processor boards available

John Seamons jks at jks.com
Wed Oct 8 16:26:13 EDT 2014


On Oct 8, 2014, at 1:36 PM, "Tom Van Baak" <tvb at LeapSecond.com> wrote:

> Time-stamping is wonderful. But note -- it does not imply using NTP! Best to time-stamp with some sort of fine nanosecond or picosecond XO or OCXO or Rb or Cs or GPSDO -- and not against the gross millisecond or microsecond PC / SBC / hardware / software cauldron of NTP.

Okay, then I didn't quite understand that requirement of time-stamping.

I made a real mistake by not running the 5370's 10 MHz oven clock, that was available right there on a processor board pin, to a GPIO on the Beagle so it could be accurately counted with the built-in event counter and software overflow (that clock used to drive the processor clock of the old MC6800). A terminating resistor and level-shift are required if I remember correctly, so it would be slightly more effort than a "blue wire" fix.




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