With a V.Soft Keyer setting, a broad range of color luminances will blend in with
the video input.
Overlay mode in everyday use
The most common application is t o overlay some form of gra phics or text on to a video
background, but by cha nging the text or graphi cs slightly, and careful alteration of th e
unit's settings, you can easily improve overlay quality.
Use anti-aliased text fonts wherever possible. This ensures that the edges of the
fonts are smoothed, so that the overlay circuit's softer Keyer settings will blend
them in to the video background - resulting in a far more professional result.
Choose darker colors in your text and graphics carefully. The wrong color (eg.
dark blue) may not overlay at all. Use a slightly lighter tone to improve overlay.
If you are overlaying very similar text or graphics, choose the one Keyer setting
and Key Level that will work best for all of them, and then STORE it. The unit
will remember this setting until it is next changed (or erased).
Always experiment with the Keyer setting and Key Level for the text or graphics
you want to overlay. There will be an optimum setting.
Use with a monochrome compo site video source
Such a video source won't have a subcarrier burst for the Eclipse to lock on to, so be
aware of the following points:
You can feed a monochrome source into the unit provided that you do not use the
Genlock mode (use Mix mode instead). In Genlock mode, a subcarrier signal will
be present that will not be valid.
For optimum clarity, feed the monochrome signal into the luminance (Y) pin on
the S-Video input. You can leave the chrominance signal unconnected. This will
give a sharper overlay signal, and without chroma-artefacts that may be present if
colors are attempted to be overlaid. This will also allow you to use the Genlock
mode, but you will need to make up a special cable for this arrangement.
Use with RGB Out
If you ar e usin g t he RGB output a t the same t ime a s usin g t he Gen lock, Overla y or Mix
modes, be aware of the following:
The RGB output uses the composite video output signal, along with the red, green
and blue signals, to feed a TV or VCR.
If you are using either the Overlay or Mix modes, a suitable composite video
output signal is only present if your Signal Type (i.e. input source) is also set to
composite video.
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