RGBLink MSP 216 User Manual - Manual (Page 16)

1. Brief Introduction
Terms and Definitions
MSP 216 User Manual 16
Commercial Building Telecommunications Wiring Standard.
 “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 used color bars are the SMPTE standard
color bars. In PAL video, the most commonly used color bars
are eight full field bars. In the computer, the most commonly
used color bars are two rows of reversed color bars.
 “Color burst”: In color TV systems, a burst of sub-carrier
frequency located on the back porch of the composite video
signal. This serves as a color synchronizing signal to establish
a frequency and phase reference for the chrome signal. Color
burst is 3.58 MHz for NTSC and 4.43 MHz for PAL.
 “Color temperature”: The color quality, expressed in degrees
Kelvin (K), of a light source. The higher the color temperature,
the bluer the light. The lower the temperature, the redder the
light. Benchmark color temperature for the A/V industry
includes 5000°K, 6500°K, and 9000°K.
 “Contrast ratio”: The radio of the high light output level
divided by the low light output level. In theory, the contrast
radio of the television system should be at least 100:1, if not
300:1. In reality, there are several limitations. In the CRT, light
from adjacent elements contaminate the area of each element.
Room ambient light will contaminate the light emitted from the
CRT. Well-controlled viewing conditions should yield a practical
contrast ratio of 30:1 to 50:1.
 “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 image quality. This
communication takes place over the DDC – Display Data
Channel.
 “Ethernet”: A Local Area Network (LAN) standard officially
known as IEEE 802.3. Ethernet and other LAN technologies are
used for interconnecting computers, printers, workstations,
terminals, servers, etc. within the same building or campus.
Ethernet operates over twisted pair and over coaxial cable at