Y/C input - selectable by a jumper inside the ChromaKey's box
connects to the RGB port between the Amiga and the genlock or directly to a Video Toaster
disable switch (Genlock / Chroma) - in Genlock position the video signal is passed through unaffected
the Normal / Invert switch selects between blue background or subject-area dropout
the keyed chroma level is adjustable by the slider
gives Video Toaster users the choice between luma and chroma keying and is controlled completely from the Switcher
procedure of operating with the Toaster:
ChromaKey's video output goes into Toaster's Input 1 through a time base corrector
the background video to be keyed over is connected to Input 2
ChromaKey's key output is connected to either Input 3 or 4
the switches and the slider is bypassed, the key effect is controlled by the Switcher
in the Switcher set the Program Bus to Video 1, the Preview Bus to Video 2, and the Overlay Bus to Input 3 or 4 (where ChromaKey's key out is connected)
select the Art Card effect and set the luminance key to white
use the T-Bar to reveal the video background
external power supply
jumper settings
J1 ON OFF
J2 OFF ON
- key color - red (R-Y) - blue (B-Y)
J3 1-2 2-3
- key selection - chrominance part of Y/C - derived from composite