evertz 5600MSC Series, Инструкция по эксплуатации

Страница: 18 / 128

Model 5600MSC Master Clock/SPG Manual
Page 1-4
Revision 1.6
OVERVIEW
frequency is 4 times the colour subcarrier frequency (approximately 14.3 MHz for NTSC
and 17.7 MHz for PAL)
AES: (Audio Engineering Society): A professional organization that recommends standards for
the audio industries.
AES-3: See AES/EBU.
AES/EBU: Informal name for a digital audio standard established jointly by the Audio Engineering
Society and the European Broadcasting Union organizations. This audio standard is
formally known as AES3-1992.
ANALOG: An adjective describing any signal that varies continuously as opposed to a digital signal
that contains discrete levels representing digits 0 and 1.
A-TO D CONVERTER (ANALOG-TO-DIGITAL): A circuit that uses digital sampling to convert an
analog signal into a digital representation of that signal.
BIT: A binary representation of 0 or 1. One of the quantized levels of a pixel.
BIT PARALLEL: Byte-wise transmission of digital video down a multi-conductor cable where
each pair of wires carries a single bit. This standard is covered under SMPTE 125M,
EBU 3267-E and CCIR 656.
BIT SERIAL: Bit-wise transmission of digital video down a single conductor such as coaxial cable.
May also be sent through fiber optics. This standard is covered under SMPTE 259M
and CCIR 656.
BIT STREAM: A continuous series of bits transmitted on a line.
BNC: Acronym for British Naval Connector or Bayonet Nut Connector or Bayonet Neill
Concelman - a coaxial cable connector used extensively in professional television
systems. These connectors have a characteristic impedance of 75 ohms and are
standardized by the IEC 169-8 standard.
BYTE: A complete set of quantized levels containing all the bits. Bytes consisting of 8 to 10 bits
per sample are typical in digital video systems.
CABLE EQUALIZATION: The process of altering the frequency response of a video amplifier to
compensate for high frequency losses in coaxial cable.
CCIR: (International Radio Consultative Committee) An international standards
committee. (This organization is now known as ITU.)
CCIR-601: (This document now known as ITU-R601).
CCIR-656: (This document now known as ITU-R656).
CLIFF EFFECT: (also referred to as the ‘digital cliff’) This is a phenomenon found in digital
video systems that describes the sudden deterioration of picture quality due to excessive
bit errors, often caused by excessive cable lengths. The digital signal will be perfect
USO
RESTRITO