Tektronix Grass Valley 3000, User Manual, Page: 164 / 284

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Section 4— Switcher Operations
9. For keying from a black on white source, select Keyer
INVERT
.
For keying from a white on black source, leave
INVERT
off.
10. To mask parts of the key that you don’t want to see, select
INH MASK
and select either a box wipe pattern, or a video
source to serve as the mask source. Use the mask control
knobs on the Masks Subpanel (
LEFT/RIGHT/TOP/BOTTOM
)
when adjusting the box mask.
11. To use a wipe, select either Primary or Secondary wipe on the
Mask Subpanel. Use the
PRESET SIZE
knob on the Wipe
Subpanel to adjust the wipe size.
12. To use a video source, select
MASK BUS
on the Mask
Subpanel. Select the source by delegating it to the Mask Bus
(on the PVW/AUX Bus Delegate row of buttons).
13. Use
TOP/GAIN
and
BOTTOM/CLIP
(active when the
MASK BUS
button on the Masks Subpanel is selected) knobs on the Masks
Subpanel to adjust the mask source as you would adjust a key
source.
14. The following adjustments are made on the Keyer Subpanel.
To put a border on the key, select a Borderline (option must be
installed on keyer) key edge mode:
BORDER
,
SHADOW
,
EXTRUDE
, or
OUTLINE
. To position the edge, adjust the
SIZE/
POS
Knob. Set brightness with the
OPACITY
Knob. To set the
edge color, use the Matte Subpanel controls.
15. To clear a border mode to its default position and color, hold
the crosspoint button down and press
CLEAR WORK BUFR
. To
turn off the border modes, creating an unbordered key, select
NORMAL
edge mode.