Download Tektronix Grass Valley 3000 User's Manual

Glossary
M/E: An abbreviation for mix/effects.
Mix, Dissolve, Crossfade: A transition
between two video signals in which one
signal is faded down as the other is faded
up or in which one signal is faded in or out
over the other.
Mix/Effects (M/E): An electronic system
capable of processing video signals with
other video or control signals.
Mix to Pattern Limit: A transition limit
in which the pattern edge between two
video signals is set up with a lever arm
and stored in microprocessor memory.
Mixer: A control circuit in which two or
more input video signals are multiplied
with one or more non-video control
signals.
Modem: A device that converts signals
from a form compatible with data
processing equipment to a form
compatible with transmission facilities
(such a telephone lines) and vice versa.
Nanosecond (ns): One billionth of a
second.
Noise: Interference present in a video or
audio signal.
Non-Additive Mix (NAM): A transition
between two video signals in which only
the signal with the largest instantaneous
amplitude at any point in the picture is
visible.
NTSC: The U.S. standard for encoded
color TV transmission developed by the
National Television System Committee.
This standard uses a 3.579545 MHz
subcarrier whose phase varies with the
instantaneous hue of the televised color,
and whose amplitude varies with the
instantaneous saturation of the color. A
single frame (picture) in this standard
consists of 525 scanning lines. One frame is
shown every 1/29.94 of a second. (Also see
PAL.)
O
Monitor: A device used for viewing
video signals.
Octal: A numerical notation system using
a base of 8. (Also see Binary and Hex.)
Multiplier: An electronic control circuit,
the output of which is the product of a
video input and a control input, or the
product of two control signal inputs.
On-Air: The state of a signal which is
present at the switcher Program output.
N
NAB: National Association of
Broadcasters.
Operating Program: The complex
sequence of instructions that determines
the ability of a computer to both
sequentially and concurrently run specific
programs. (Also see Program and
Routine.)
Outline: A title enhancement in which
only the outline of the key is visible, with
G-9