You think this is complicated? When we did eidt rooms and TV studios in the 80's - 90's we had to keep all the signal runs the same lenght to maintian timings. Then we figired out that we could trim the runs from the sync generatot insted and if we were willing to spring for a little more money and put a sync generator at each device, slave it to the master gernerator and us delay lines to set the timing. We hated to use delay lines in the signal path as that would degrade the signal. And boy did we have to watch out for ground loops or it was hum city even humbars in the video.
One funny story about video sync timings: At one time NBCTV and the other major networks were using rabidum ocilators for master sync sources. Well they would not zero beat against the ceisiums at the NIST so we went out and bought three ceisiums. When we brought them up and went to lock them against NIST we were way out of sync. So we called CBS against whom whe had been zero beating and asked them who they were locked to. They said. "ABC." So we called ABC and asked them, "You" was their reply. The three networks had been locked in a free floating circle, difting along in sync with each other!
Grayson
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