G-10
Glossary
the same (background) video outside and
inside the outline.
P
PAL (Phase Alternating Line):
A
transmission standard for encoded color
television used in Europe and some other
parts of the world. This standard uses a
4.43361875 MHz subcarrier which is
alternated 90 degrees in phase from one
occurrence of a line to the next to minimize
hue errors in color transmission. A single
frame (2 fields) in this standard consists of
625 scanning lines. One frame is produced
every 1/25 of a second. (Also see NTSC.)
Pattern Border:
A variable-width
colored border that can be inserted at the
pattern edge in a wipe transition between
two video signals. The border is filled with
matte video from the wipe border matte
generator.
Pattern Limit:
A transition limit in
which a preset position of the pattern edge
between two video signals is stored in
microprocessor memory. Full movement
of the Mix/Effects lever arm or Auto
Transition performs a mix or wipe to or
from the preset limit.
Pattern Modulation:
An oscillation or
modulation of the vertical and/or
horizontal dimensions of a wipe pattern
edge.
Port:
A connection point between a
computer and another hardware device.
Preset Black Transition, Fade-to-
Black:
A transition in which one video
signal is faded to color black before the
other video signal is brought up.
Preset Pattern:
The pattern used in a
preset wipe transition.
Preset Wipe:
A transition between two
video signals in which the limit of the
separation (pattern edge) between signals
is controlled by the wipe pattern controls.
If the effect is wiped on-air over an
existing background, the transition is
called a wipe to a pattern limit; if the effect
is mixed on-air, it is called a mix to a
pattern limit.
Preview (PVW) Output:
The output of
the switcher which allows you to observe
an effect before it is placed on-air. Also
called Look-Ahead Preview.
Primary Inputs:
Video and key inputs
that have not passed through any
processing circuits. These sources are
selectable by the Source Select buttons on
the main control panel.
Printer:
A device which converts signals
into letters, numbers, symbols, and
graphics for output onto paper. (Also see
Hard Copy.)
Program:
A complex sequence of
instructions which tell a computer how to
receive, process, store and transmit
information for a specific task or related
tasks. (Also see Operating Program and
Routine.
Program (PGM) Output:
The on-air or
final output of the switcher. May also be a
signal which is available at the “Program”
Summary of Contents for Grass Valley 3000
Page 16: ...xvi Preface ...
Page 108: ...2 72 Section 2 Startup Configuration ...
Page 115: ...3 7 Transitions Figure 3 1 A Mix Transition Starting Video Midway Transition Ending Video ...
Page 141: ...4 3 Starting Conditions Figure 4 1 Source 1 Figure 4 2 Source 2 ...
Page 222: ...4 84 Section 4 Switcher Operations ...
Page 240: ...Appendix A Shaped and Unshaped Video A 18 ...
Page 256: ...B 16 Appendix B Keyframe Facts ...
Page 262: ...Appendix C Super Black C 6 ...
Page 276: ...G 14 Glossary ...