[time-nuts] My Racal-Dana 1992
Chuck Forsberg WA7KGX N2469R
caf at omen.com
Fri Dec 16 11:19:41 UTC 2011
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.
--
Chuck Forsberg WA7KGX N2469R caf at 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
-------------- next part --------------
A non-text attachment was scrubbed...
Name: 1992.jpg
Type: image/jpeg
Size: 11228 bytes
Desc: not available
URL: <http://febo.com/pipermail/time-nuts_lists.febo.com/attachments/20111216/1d71bee0/attachment.jpg>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: phasewhack.gif
Type: image/gif
Size: 9434 bytes
Desc: not available
URL: <http://febo.com/pipermail/time-nuts_lists.febo.com/attachments/20111216/1d71bee0/attachment.gif>
More information about the Time-nuts_lists.febo.com
mailing list