1.
Brief Introduction
Terms and Definitions
CP 3072 User Manual 16
The following terms and definitions are used throughout this guide.
“Aspect ratio”:
The relationship of the horizontal dimension to the
vertical dimension of an image. In viewing screens, standard TV is 4:3,
or 1.33:1; HDTV i
s 16:9, or 1.78:1. Sometimes the “:1” is implicit,
making TV = 1.33 and HDTV = 1.78.
“AV”:
Audio visual or audio video.
“Baudrate”:
Named of J.M.E. Baudot, the inventor of the Baudot
telegraph code. The number of the electrical oscillations per second,
called baud rate. Related to, but not the same as, transfer rate in bits
per second (bps).
“BNC”:
Bayonet Neill-Concelman. A cable connector used extensively
in television and named for its inventors. A cylindrical bayonet
connector that operates with a twist-locking motion. To make the
connection, align the two curved grooves in the collar of the male
connector with the two projections on the outside of the female collar,
push, and twist. This allows the connector to lock into place without
tools.
“Brightness”:
Usually refers to the amount or intensity of video light
produced on a screen without regard to color. Sometimes called “black
level.
“Color bars”:
A standard test pattern of several basic colors (white,
yellow, cyan, green, magenta, red, blue, and black) as a reference for
system alignment and testing. In NTSC video, the most commonly.
“DVI”:
Digital Visual Interface. The digital video connectivity standard
that was developed by DDWG (Digital Display Work Group). This
connection standard offers two different connectors: one with 24 pins
that handles digital video signals only, and one with 29 pins that
handles both digital and analog video.
“EDID”:
Extended Display Identification Data
– EDID is a data structure
used to communicate video display information, including native
resolution and vertical interval refresh rate requirements, to a source
device. The source device will then output the optimal video format for
the display based on the provided EDID data, ensuring proper video