[time-nuts] 1PPS for the beginner

Ron Bean time at rbean.users.panix.com
Tue Aug 14 10:33:54 EDT 2018


>A normal GPS module generates it�\200\231s outputs off of a free 
>running internal clock. Generally this is a TCXO in a 
>�\200\234timing�\200\235 GPS ( = one that puts out a rational PPS).  
>This i bit counter intuitive, since you would *think* they phase lock 
>the local source in the module. They don�\200\231t mainly because it 
>makes the math easier.

Is there a need to make the math easier?
This is what we have microprocessors for.

Thanks for the "hanging bridge" explanation. It would be nice if 
someone had a time-nuts-glossary that included various terms that 
come up on the list, like "hanging bridge", "spurs", "sawtooth 
correction", "GPS allan ski jump", etc.

Is there a time-nuts FAQ?




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