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[time-freq] TADD-2 Help Please

John Ackermann N8UR jra at febo.com
Wed Apr 14 19:18:11 UTC 2010


Great!  Glad it's working.

One of the uses for the sync circuit is to measure the offset of an 
oscillator against GPS -- hook the device under test to the TADD-2, 
synchronize against GPS, then use an oscilloscope or time interval 
counter to measure the speed at which the two PPS signals drift apart. 
Using PPS rather than a higher frequency gives you more time before the 
drift "rolls over".

John
----

Mack wrote:
> John,
> 
>  
> 
> Thank you for replying and the information. All is clear now and the kit 
> is working as designed.
> 
>  
> 
> 73,
> 
>  
> 
> Mack de WB4MAK
> 
> http://www.nfarl.org <http://www.nfarl.org/>
> 
> http://www.sedxc.org <http://www.sedxc.org/>
> 
>  
> 
> 
> ------------------------------------------------------------------------
> 
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