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TC2 Elite Genlock Definitions and Options

"Genlocking" controls the clock that the system is running at. In effect, this means "what tells us exactly when to render a frame."

There are several options for this :

1) Video clock
That is the default genlock setting and will use the SDI output. It means "run at precisely the clock rate that the SDI output needs.

2) System clock (available on certain products only)
Use the current time (the actual computer clock) to work out when to render frames. Used in collaboration with NTP timing, this allows you to genlock the entire system to a global clock of some kind. Note that when this is selected, you most probably will have an SDI output showing dropped audio and video because you are no longer running at the exact SDI output rate.

3) GPU clock
GPU Clock uses the GPU to clock the output, and the expected use of this setting, for instance, if you are using a projector of the GPU output. That means the switcher runs at precisely the GPU clock rate. If you are using the GPU clock to control the output, you might drop frames on SDI audio and video because now the frames are running at the rate needed for the GPU and not the SDI out.

4) NDI clock
Using an incoming NDI source as the clock allows the system to be locked to the remote NDI source. If you are using the NDI clock to control the output, most likely, there will be dropped frames on SDI audio and video because now the frames are running at the rate needed for the NDI source and not the SDI out.

 

Sample (TC2 Elite):

 

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