So, what you are saying is, you can utilize the ATEM Program Output on an SDI signal to Genlock a camera over fiber.
I'm not saying you aren't telling me the truth, but that idea really flies in the face of all traditional concepts of genlock, and how it works. First off, you could not traditionally ever genlock off of the output of your switcher, since it's timing is already behind the timing of the inputs. I mean, the inputs are timed to arrive at the switcher at the same time. The switcher's output, by definition HAS TO OCCUR AFTERWARDS.
Next, when everything else in the world is using TLS or BLS, an analog video format, to sync instead of SDI, how is it that you can easily use SDI for accurate sync?
That said, timing/genlock/reference is so much more forgiving and easy in the world of SDI that I wouldn't be surprised that you are 100% correct - even if it doesn't make any sense.
Doggone whipper-snappers! Back in my day, you had to time all of your sources horizontally and vertically, and time your sub-carrier as well. Humph!!! But seriously Gary, please start putting a reference input on ALL of your miniconverters and open gear converters that convert to SDI. When you reclock the SDI, start reclocking it TO a reference input (when available). This would help us all out, and make everything you ever use on a miniconverter a genlockable source.