[time-nuts] FE-.5680A trimming resolution
albertson.chris at gmail.com
Mon Jan 30 02:19:32 UTC 2012
On Sun, Jan 29, 2012 at 10:19 AM, Javier Herrero <jherrero at hvsistemas.es> wrote:
> El 29/01/2012 14:45, Bob Camp escribió:
> My next intention is to replace the OCXO in one of my Thunderbolts with a Rb
> and use a small microcontroller to get the voltage correction from the
> Thunderbolt through the serial port and convert to a 5680A offset. I
> probably will use a Luminary since I've some small evaluation boards around,
> and I only have to add a MAX3232-class interface IC for the serial ports.
My plan is simpler. I'll compare the phase of the Rb and t-bolt and
send rs-232 commans to the Rb to keep the difference as small as
possible. This will run on an Arduino. I'm also thinking of porting
over much of the Lady Heather t-bolt monitoring stuff to the Arduino.
One thing you can do with a uP based controller is look at the
t-bolt's saw tooth error correction and remove a few nS of error.
Redondo Beach, California
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