[time-nuts] FE-5680A Mechanical Question
EWKehren at aol.com
EWKehren at aol.com
Fri Jan 13 16:09:14 EST 2012
Can you do the programming?
In a message dated 1/13/2012 3:56:47 P.M. Eastern Standard Time,
djl at montana.com writes:
I would just use a picaxe, has a simple to use IDE and several different
sizes. No need for assembly, cheap enough for quasi-production.
> On Fri, Jan 13, 2012 at 3:19 AM, <EWKehren at aol.com> wrote:
>> What we know is that you can set the Rb in 7 E-13. Dithering would
>> even closer setting, the question is what rate will the Rb accept with
>> loosing lock or deterioration of the performance. Some one should
>> that. I am still waiting to se some aging. Taking the 10 MHz output
>> and than
>> use an analog loop and something like a Morion OCXO and you have the
>> best of
>> Digitally controlling the Rb will cut the cost of the control loop in
>> For $10 in parts and a PC board for less than $10 using Shera like
>> controller can be realized. What is needed is some one able to do the
>> If some one is interested and able, please contact me off list. A low
>> GPS or a 1 pps output of a Tbolt be perfect source.
>> Bert Kehren
> Don't use a PIC for the prototype. A desktop PC could work as well
> and everyone here already has one. Connect the FE5680 to the PC's
> serial port and send commands to adjust it. The PC also needs to be
> able to read a voltage. Many already have audio input with 24-bit
> ADC chips.
> Later you can move the C code from the PC pretty much directly to an
> AVR. PICs typically use assembly language, that is harder and limits
> the number of people who can contribute changes to the code. But you
> can start with a PC, maybe running Linux or BSD.
> Chris Albertson
> Redondo Beach, California
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