IF? the RS232 command changes the freq and does not reset the phase,
then the way to get there is to use dither or PWM between two frequency values. Example: to change the phase 1ps, change the freq by 7e-13 for 1.4 seconds and then put it back.
If you want finer resolution than 1 ps then update faster.


Using the digital input will only give you 7 E-13 steps. I will use it for preset.
Bert Kehren

albertson.chris at gmail.com writes:

On Thu, Dec 22, 2011 at 9:52 AM, Chuck Forsberg WA7KGX N2469R <caf at omen.com> wrote:
You could disable the Tbolt's oscillator and put the Rb output in its place.
Then write a program that reads the PPS and/or OSC  offset and issue
appropriate commands to the Rb to bring it in  line.

I don't think it is possible to do that.  The RS232 commands  don't
allow the level of control that is required.  All you can do is  step
the frequency, no way to adjust the phase of the Rb 10MHz  output.

Chris Albertson
Redondo Beach,  California

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