The V-800HD MK I and MK II both support External key, also know as a Split Key effect, where there is a copy of the graphic source that is a solid black and white alpha channel.

Some live graphics software can create this alpha key output automatically, but in this example, I create it with two imported still images.

 

Here is an example:

Fill Source:

Alpha Key Source:

 

 

In this example, I imported:

• The Fill Source to Still Image slot 1, which is assigned to Video Crosspoint 9
• The Key Source to Still Image slot 2, which is assigned to Video Crosspoint 10

 

To setup the External Key effect:

• Select your background (camera) source as PGM (red)
• Select your Fill Graphic (full-color) source as PST (green)
• Go to MENU > KEY:
  • Set Mode to External Key
  • Set Type to Black or White
    • This will use the Alpha Key source as a reference for keying out areas of the Fill Source
    • This is a great way to get a clean key effect for your graphics, but requires two video inputs or still slots for live graphics

Final Result When: External Key Type > Black

Final Result When: External Key Type > White

• Set the Key Coupling for the Fill channel, so the Source (alpha key channel) is assigned to the alpha key layer input
  • Example: Full Color Fill is input 9 and Alpha Key is input 10
  • Set Key Coupling for Fill Ch.9 to Source Ch.10
    • You can see in the menu that the columns go in order by Fill channel, and you can map the one you use to the alpha key source

 

• Press the KEY > ON button on the hardware panel

• Press the [CUT] or [AUTO] button, and the green PST selection will turn red

 

 

You should see an active split/external key at that point, like in the below images: