Ross SYNERGY 4000DR-003, Operation Manual, Page: 199 / 332

Synergy Series Operation Guide (v18) Keying • 7–25
Use the following procedure to perform a Chroma Key on an MLE Keyer:
1. Check that your program/preview monitoring is set as required. Refer to the section
“ Using the Preview Bus ” on page 4–33 for details.
2. Select an input on the MLE’s PGM or BKGD bus. This provides the background over
which the Chroma Key will appear.
3. On the Key Bus , select the desired Chroma Key source (typically, a camera or a
graphics system).
4. In the MLE’s Key 1 or Key 2 group, press
CHROMA KEY
to display the Chroma Key
Setup Menu .
5. Adjust the clip, gain, and hue as follows:
• For Display Section adjustments, press
Basic
.
Chroma Key Setup Menu — Basic Adjustments
• Use the
Clip
knob to adjust clip level (threshold) . The default value:
49.0%
.
• Use the Gain knob to adjust gain (softness). The default value: 81.9% .
• Use the
Hue
knob to select the color (hue) that you want to remove. The default
value is
34.9%
(blue).
Refer to the section “ Additional Chroma Key Tips and Considerations ” on
page 7–31 for a basic sequence of steps for clipping Chroma Keys.
6. Adjust the width of the selected hue (the Reject parameter) as follows:
• For Display Section adjustments, press
Reject
.
Chroma Key Setup Menu — Reject Adjustments
• Use the Reject knob to adjust the reject level. The default value is 80.0% .
7. Adjust the amount of chroma retained in the key’s foreground (the Chroma Suppress
parameter) as follows:
• For Display Section adjustments, press Chroma Suppress .