SJ/T 11546-2015 PDF English
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Technical requirements and methods of measurement for integration of display wall
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SJ/T 11546-2015: PDF in English (SJT 11546-2015) SJ/T 11546-2015
SJ
ELECTRONIC INDUSTRY STANDARD
ICS 33.160.99
M 70
Filling No.. 52050-2015
Technical Requirements and Methods of Measurement for
Integration of Display Wall
ISSUED ON. OCTOBER 10, 2015
IMPLEMENTED ON. APRIL 1, 2016
Issued by. Ministry of Industry and Information Technology of the People’s
Republic of China.
Table of Contents
Foreword... 3
1 Scope... 4
2 Normative References... 4
3 Terms and Definitions... 5
4 Technical Requirements... 6
5 Methods of Measurement... 8
Technical Requirements and Methods of Measurement for
Integration of Display Wall
1 Scope
This Standard specifies the terms and definitions, technical requirements and methods of
measurement for integration display walls.
This Standard is applicable to the integration display walls composed of M layers × N
columns (at least one of M and N is greater than 1, M and N are natural numbers) of
independent projection (front or rear projection) display units or flat panel display units
(PDP flat panel displays and LCD flat panel displays). For integration display walls of other
types of display units, this Standard can be used as a reference.
2 Normative References
The following documents are indispensable to the application of this document. In terms of
references with a specified date, only versions with a specified date are applicable to this
document. In terms of references without a specified date, the latest version (including all
the modifications) is applicable to this document.
GB 4943.1 Information Technology Equipment - Safety
GB/T 8898 Audio, Video and Similar Electronic Apparatus - Safety Requirements
GB/T 26270 Standard Test Signals for Digital Television Receiving Equipment
SJ/T 11324 Terminology of Digital Television Receiving Equipment
SJ/T 11338 General Specification for Digital Television LCD Rear Projection Display
SJ/T 11339 General Specification for Digital Television PDP Display
SJ/T 11340 General Specification for LCD Front Projectors
SJ/T 11343 General Specification for Digital Television LCD Displays
SJ/T 11344 Methods of Measurement for Digital Television LCD Rear Projection Displays
SJ/T 11346-2015 Methods of Measurement for Electronic Projectors
SJ/T 11348-2016 Display Performance Methods of Measurement for Flat Panel Television
3 Terms and Definitions
The terms and definitions defined in SJ/T 11324 and the following ones are applicable to
this document.
3.1 Unit of Integration Display
The basic unit that can independently display various video display functions in the
integration display wall.
NOTE. It can be a projection display unit or a flat panel display unit.
3.2 Integration Display Wall
A display composed of units of integration display physically integrated in M rows and N
columns, which is the terminal of the integration display system.
NOTE. An integration display wall can display one image or multiple images.
3.3 Seamless Integration Display Wall
An integration display wall in which there is no physical gap between the images displayed
by each unit of integration display in the integration display wall.
3.4 Edge Composite Technology
The technology of overlapping the edges of the images of adjacent units of integration
display to make the displayed image seamless and the brightness of the entire image not
enhanced.
3.5 Physical Gap
The physical clearance between the edges of two adjacent screens of a unit of integration
display in an integration display wall.
3.6 Dark String
The distance from the edge of the displayed image to the outermost edge of the screen when
a unit of integration display displays a full white field graphic signal.
3.7 Optical Gap
The two dark strings of two adjacent units of integration display plus a physical gap in the
integration display wall.
The maximum thickness that can be inserted shall be used as the standard and counted as the
value of the physical gap, expressed in millimeters (mm).
For an integration display wall integrated with a rear projection box, a thickness gauge is
inserted into the gap between two adjacent screens. The maximum thickness that can be
inserted shall be used as the standard and counted as the value of the physical gap, expressed
in millimeters (mm).
For an integration display wall integrated with PDP or LCD displays, the value of the gap
between two adjacent units of integration display is measured using a thickness gauge,
expressed in millimeters (mm).
5.2.2 Methods of measurement for optical gaps
The integration display wall displays a full white field signal, and the optical gap of two
adjacent integration screens is measured using a caliper or gauge, expressed in millimeters
(mm).
5.3 Inspection of Functional Interface and Display Format
Inspect with visual inspection and corresponding signals.
5.4 Measurement of Normal Temperature Performance
5.4.1 Measurement conditions
Unless otherwise specified, the measurement is carried out under the following conditions.
a) Ambient temperature. 15°C~35°C, preferably 25°C;
b) Relative humidity. 25%~75%;
c) Atmospheric pressure. 86 kPa~106 kPa;
d) Supply voltage. AC 209 V~231 V;
e) Supply frequency. 49 Hz~51 Hz;
f) Harmonic component. ±5%.
NOTE. There is no specific requirement for ambient light, but the value of ambient light must
be indicated in the test report.
5.4.2 Test signal
According to the relevant test signals of GB/T 26270.
5.4.3 Measurement basis
......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.
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