GPIO Genlock Example

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GPIO Genlock Example

Example: Use an input VSync

In the Juggler system, the first in line is designated as providing the source for genlock.

In Compere

This first Juggler’s GPIO:1 is set to be an output, using a video channel media input as its source, and the signal it is sending as the V Sync is is receiving from this source (expressed as Rx:V Sync) (see terms above).

gpio-genlock-source1

See Compere 1.0-5 User Guide: GPIO Properties.

The next Juggler in line has its GPIO:2 set to be in input, in other words, simply receiving from the attached cable.

Its GPIO:1 is set to be an output, using its GPIO:2 as its source (the signal need not be specified).

This is repeated down the line, the last of course not needing to be assigned a sending GPIO.

Connections

Five Jugglers would therefore be cabled as follows:

gpio-genlock-daisy

Genlock Mode

Now that every unit has a genlock signal, each that has a signal received on its GPIO:2 can use that for the output genlock mode in Compere.

The first Juggler has no signal on GPIO:2, so uses the same signal received on Video Channel 2 (Compere, JugglerName > Video Channel 2 > Properties):

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Page edited [d/m/y]: 04/04/2023