Grass Valley DD35 Family v.3.1.5 User Manual
Page 79
2. Panel Operation
DD35 Production Switcher
2 – 45
Operating Instructions – Rev. 16 / 10.2001
2.7.9.1
AUTOMATIC CHROMAKEY ADJUSTMENT
This mode serves to adjust the following parameters:
D
key color for LUMINANCE, HUE and CHROMA
D
selectivity for SELECTIVITY LEFT and SELECTIVITY RIGHT
The parameters DENSITY, CLEAN UP and SELECTIVITY-CENT are set by
default adjustment to max. ccw position (ineffective).
SELECTIVITY Y is set to center position (i.e. ineffective).
COLOR CANCEL and NOISE REDuction to ON, P/S/S and SEL MASK to OFF.
Auto
Pressing the Auto button starts an automatic key adjustment to Blue. The picture
evaluation includes all those colors which are within a certain angle range around
the primary color Blue. Within this range, blue with the highest intensity is detected
as key color. Key color and selectivity are thus adjusted.
Cursor
When pressing the Cursor button you enter the automatic, cursor-assisted key ad-
justment mode.
Pressing the button, the key fill signal with key color and a cursor appears on the
preview monitor. Move the cursor to an area with the key color in it using the track-
ball in the Positioner panel.
Then press the Auto button to start the adjustment. Only those colors will be eva-
luated which resemble to those which were found within the cursor area. The color
with the highest intensity is detected as a key color.
Note:
When the Keyer is on, the output signal will be affected during the auto-
matic adjustment.
2.7.9.2
MANUAL OPTIMIZATION OF CRITICAL PICTURES
In the off position, OPAC, GAIN, CLIP or OPAC, DENS, CLEA are adjustable with
the digipots.
In the On position, the selectivities SELC, SELL, SELR are adjustable with the digi-
pots. For a detailed description of these and additional adjustments see section
Keyers menu.
Refer to the controls Selectivity L (left), Selectivity R (right) and Selectivity Y in
the section Keyers / Chroma Key menu.
2.7.9.3
MANUAL ADJUSTMENT OF THE KEY COLOR
Refer to the controls Hue, Chroma and Luminance in the section Key / Chroma
Key menu.
Chr Sel