[time-nuts] Cheap 9.8Mhz Sa.22c's

[Bob Camp]

Hi

1 pps in = signal it locks to if it has that option.
1 pps out = integer divide of the main output frequency 

If you change the main output frequency, you change the 1 pps by the same fractional amount. 

Bob

On Jun 2, 2013, at 3:20 PM, Don Latham <djl at montana.com> wrote:

> The manual at least hints that you will get 1 pps out no matter which
> MHz signal is generated, although I find the presence of  1 pps out and
> 1 pps in signals a bit confusing...
> Doon
> 
> Chris Albertson
>> What are you planning to do with the 10MHz signal.   In some cases you
>> can
>> simply use 9.8304MHz.  For example my plan to drive a DDS chip.
>> Nominally
>> the DDS wants 125MHz but iif I put in some odd-ball thing like 119.6MHZ
>> all
>> that means is I have to change the binary word I load into the DDS chip.
>> 
>> In fact that could work.  Use the 9.8305 to drie a DDS then have the DDS
>> synthesize what you really want.  It will be as stable as the Rb. but as
>> accurate as 1/2 the step size of the DDS.
>> 
>> 
>> On Sun, Jun 2, 2013 at 10:52 AM, Mark C. Stephens
>> <marks at non-stop.com.au>wrote:
>> 
>>> These are 9.8304Mhz, is possible to move them to 10Mhz?
>>> 
>>> 
>>> http://www.ebay.com/itm/Symmetricom-SA-22c-9-8304MHz-Precision-Rubidium-Oscillator-5V-and-15V-NICE-/261223397404
>>> 
>>> --
>>> 
>> 
>> Chris Albertson
>> Redondo Beach, California
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> 
> 
> -- 
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> are as significant as experiment, for thence comes quiet to the mind."
> De Erroribus Medicorum, R. Bacon, 13th century.
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> 
> 
> Dr. Don Latham AJ7LL
> Six Mile Systems LLP
> 17850 Six Mile Road
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