Feedback loop what exactly does it do

[xmag]

As the thread topic: Feedback loop what exactly does it do
Can't find anything about it in the manual that explains exactly what the loop does.

 

[John Mulcahy]

It is here: Measuring with a timing reference

 

[xmag]

It is here: Measuring with a timing reference

This confirms that I am blind !
Thanks, John! I will read and learn!