evertz X0400 Series Instruction Manual Download

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X0400 Series Router Manual

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Revision 1.4.4

OVERVIEW

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

organisation is now known as ITU.)

CCIR-601:

(This document now known as ITU-R601). An international standard for component digital

television from which was derived SMPTE 125M and EBU 3246-E standards. CCIR-601
defines the sampling systems, matrix values and filter characteristics for Y, B-Y, R-Y and RGB
component digital television signals.

CCIR-656:

(This document now known as ITU-R656). The physical parallel and serial interconnect

scheme for CCIR-601. CCIR-656 defines the parallel connector pinouts as well as the
blanking, sync and multiplexing schemes used in both parallel and serial interfaces. It reflects
definitions found in EBU Tech 3267 (for 625 line systems) and SMPTE 125M (parallel 525 line
systems) and SMPTE 259M (serial 525 line systems).

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 even though one of its
signal parameters is approaching or passing the specified limits. At a given moment however,
the parameter will reach a point where the data can no longer be interpreted correctly, and the
picture will be totally unrecognizable.

COMPONENT ANALOG:

The non-encoded output of a camera, video tape recorder, etc., consisting of

the three primary colour signals: red, green, and blue (RGB) that together convey all necessary
picture information. In some component video formats these three components have been
translated into a luminance signal and two colour difference signals, for example Y, B-Y, R-Y.

COMPONENT DIGITAL:

A digital representation of a component analog signal set, most often Y, B-Y,

R-Y. The encoding parameters are specified by CCIR-601. The parallel interface is specified
by CCIR-656 and SMPTE 125M.

COMPOSITE ANALOG:

An encoded video signal such as NTSC or PAL video that includes

horizontal and vertical synchronizing information.

COMPOSITE DIGITAL:

A digitally encoded video signal, such as NTSC or PAL video that includes

horizontal and vertical synchronizing information.

D1:

A component digital video recording format that uses data conforming to the CCIR-601
standard. Records on 19 mm magnetic tape. (Often used incorrectly to refer to component
digital video.)

D2:

A composite digital video recording format that uses data conforming to SMPTE 244M.
Records on 19 mm magnetic tape. (Often used incorrectly to refer to composite digital video.)

D3:

A composite digital video recording format that uses data conforming to SMPTE 244M.
Records on 1/2" magnetic tape.

EBU (European Broadcasting Union):

An organization of European broadcasters that among other

activities provides technical recommendations for the 625/50 line television systems.