Forgot to mention, each point is slightly more than 1 second.
On 12/16/2011 03:19 AM, Chuck Forsberg WA7KGX N2469R wrote:
Has a 9462 oscillator module in it.
I've been fooling with little C hacks to make freq and phase
measurements via GPIB.
In my desire to super-tweek the timebase I discovered that small
adjustments take
many minutes to settle down. It's like herding cats.
I noticed that physical shocks would randomize the frequency over a 10
Hz range
at 10 MHz. What's more, the new frequency didn't seem to take 10
minutes to
settle down. So I tapped on the oven with the screwdriver until it
landed right on frequency.
The resulting plot is attached.
Come to think of it, I could use the counter to measure the time
between 1pps and WWVB
zero crossing as an ultimate frequency reference as well as detecting
changes in the ionosphere.
_______________________________________________
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.
--
Chuck Forsberg WA7KGX N2469R c...@omen.com www.omen.com
Developer of Industrial ZMODEM(Tm) for Embedded Applications
Omen Technology Inc "The High Reliability Software"
10255 NW Old Cornelius Pass Portland OR 97231 503-614-0430
_______________________________________________
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.
