RGBLink RMS 8424S User Manual - Manual (Page 15)

1. Brief Introduction
Terms and Definitions
RMS 8424S User Manual 15
 ―CAT 5‖: Category 5. Describes the network cabling standard that
consists of four unshielded twisted pairs of copper wire terminated by
RJ-45 connectors. CAT 5 cabling supports data rates up to 100 Mbps.
CAT 5 is based on the EIA/TIA 568 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