HDSD9545DLY - PRO Profanity Bypass Delay Manual
OVERVIEW
Revision 1.3.7
Page 1-5
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 become totally unrecognisable.
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. This is most often
Y, B-Y, R-Y. The encoding parameters are specified by CCIR-601. CCIR-656 and SMPTE
125M specify the parallel interface.
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 which conforms 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 which conforms 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 which conforms 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.
EBU TECH 3267-E:
The EBU recommendation for the parallel interface of 625 line digital video signal.
This is a revision of the earlier EBU Tech 3246-E standard that was in turn derived from
CCIR-601.
EDH:
Error Detection and Handling (EDH) is defined in SMPTE RP-165 as a method of
determining when bit errors have occurred along the digital video path. According to
RP-165, two error detection checkwords are used, one for active picture samples, and the
other on a full field of samples. Three sets of flags are used to convey information
regarding detected errors to facilitate identification of faulty equipment or cabling. One set
of flags is associated with each checkword, and the third is used to evaluate ancillary data
integrity. The checkwords and flags are combined into a special error detection data packet
that is included as ancillary data in the serial digital signal.
EMBEDDED AUDIO:
Digital audio is multiplexed onto a serial digital video data stream.
Summary of Contents for HDSD9545DLY-PRO
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