Cobalt Digital Inc 9932-EMDE, Руководство по эксплуатации продукта, Страница: 78 / 104

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9932-EMDE Function Menu List and Descriptions
3-40
9932-EMDE PRODUCT MANUAL 9932EMDE-OM (V1.4)
(continued)
• Key/Fill Status Displays
Displays keyer timing status (on both Keyer tab and Card Status displays)
as described below.
Note: • Key/fill timing is a function of the respective key and fill signal
frame sync card/device(s). Ideal timing is within 0 to 200 samples
early of output video timing. Key/fill timing cannot be controlled on
+KEYER host card.
• Error in key/fill timing will result in loss of keying (however,
program video image will not be corrupted).
• Key Alpha/Threshold Controls When keying is set to Alpha Threshold or Reverse Alpha Threshold mode
sets luma thresholds, when crossed, allow key/fill onto program video
image.
Key Alpha setting, when increased, increases the opacity of the key/fill.
Key Threshold setting, when reduced, more readily allows the key/fill
input to assert itself over more variations of program video luma levels.
Table 3-2 9932-EMDE Function Menu List — continued
Key/fill insertion OK, within target 0-200 samples early
Key or fill insertion late error (in this example, late key video
as shown by “wrap-around” line 749 lines early offset)
Key or fill video missing/mismatched format