DB35/T 1373-2013 English PDF (DB35T1373-2013)

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DB35/T 1373-2013: General Technical Specification for Vehicle LED Screens
DB35/T 1373-2013
DB35
LOCAL STANDARD OF FIJIAN PROVINCE
ICS 31.120
L 47
General Technical Specification for Vehicle LED Screens
ISSUED ON. DECEMBER 4, 2013
IMPLEMENTED ON. MARCH 1, 2014
Issued by. Fujian Province Bureau of Quality and Technical Supervision
Table of Contents
Foreword... 3
1 Scope... 4
2 Normative References... 4
3 Terms and Definitions... 5
4 Product Classification... 5
5 Technical Requirements... 5
6 Test Method... 12
7 Inspection Rules... 15
8 Marking, Packaging, Transportation, Storage, and Instruction Manual... 17
General Technical Specification for Vehicle LED Screens
1 Scope
This Standard specifies the requirements for product classification, technical requirements, test
methods, inspection rules and marking, packaging, transportation, storage, and instruction
manual, etc. of vehicle LED screens.
This Standard applies to LED screens installed on moving carriers such as cars, trains, and ships
(hereinafter referred to as "screens").
2 Normative References
The following documents are essential to the application of this Document. For the dated
documents, only the versions with the dates indicated are applicable to this Document; for the
undated documents, only the latest version (including all the amendments) is applicable to this
Document.
GB/T 191-2008 Packaging - Pictorial Marking for Handling of Goods
GB/T 2423.1-2008 Environmental testing - Part 2.Test methods - Tests A. Cold
GB/T 2423.2-2008 Environmental testing - Part 2.Test methods - Tests B. Dry heat
GB/T 2423.3-2006 Environmental testing for electric and electronic products - Part 2.
Testing method test Cab. Damp heat steady state
GB/T 2423.6-1995 Environmental testing for electric and electronic products - Part 2.Test
methods - Test Eb and guidance. Bump
GB/T 2423.8-1995 Environmental testing for electric and electronic products Part 2.Test
methods Test Ed. Free fall
GB/T 2423.10-2008 Environmental testing for electric and electronic products - Part 2.
Tests methods - Test Fc. Vibration (sinusoidal)
GB 4208 Degrees of protection provided by enclosure (IP code)
GB 4943.1 Information technology equipment -Safety - Part 1.General requirements
GB/T 9969-2008 General Principles for Preparation of Instructions for Use of Industrial
Products
GB/T 22630-2008 Audio video-apparatus on board electromagnetic compatibility
requirement and methods of measurement
QC/T 413-2002 Basic Technical Requirements for Automotive Electric Equipment
SJ/T 11141-2012 General specification for LED panels
SJ/T 11281-2007 Test methods of LED panels
3 Terms and Definitions
For the purposes of this Document, the terms and definitions given in SJ/T 11141-2012 and the
following apply.
3.1 Brightness maintenance rate
When the screen is in normal use, the degree to which the screen brightness is maintained at
the initial value as the total burning hours increase, expressed as a percentage (%).
4 Product Classification
4.1 Classification by display color
It is divided into mono-color, multi-color, and full-color screens.
4.2 Classification by display function
It is divided into text, graphics, animation, and video screens.
4.3 Classification by display screen shape
It is divided into bar, rectangular, arc, and other shape screens.
5 Technical Requirements
5.1 General requirements
The design and structure of the product shall ensure that the product has reliable performance
in normal use and shall not cause harm to users and the surrounding environment.
5.2 Conditions of use
5.8.1 Power adaptability
The screen shall be able to operate normally under the conditions of 5.2 a).
5.8.2 Power consumption
The manufacturer shall provide the nominal value of power consumption; and the actual power
consumption shall not exceed 5% of the nominal value.
5.8.3 Pixel loss rate
The pixel loss rate of the entire screen shall be less than 0.2% and shall be discretely distributed.
5.8.4 Grayscale
The grayscale level of the full-color screen shall be no less than 4096 (12bit).
5.8.5 Frame switching frequency
The frame switching frequency of the screen shall be no less than 60Hz; and the frame
switching frequency of the screen that realizes 3D effect shall be no less than 120Hz.
5.8.6 Refresh frequency
The refresh frequency of the screen shall be no less than 100Hz.
5.9 Functional characteristics
It shall meet the requirements specified in 5.9 of SJ/T 11141-2012 and the product’s instruction
manual.
5.10 Safety requirements
5.10.1 Electrical safety requirements
It shall comply with the provisions of GB 4943.1.
5.10.2 Marking
The screen shall have the following safety markings.
- Rated voltage or voltage range, V;
- Symbol of power supply properties;
- Rated current, mA or A;
- Manufacturer name or trademark;
- Model code specified by the manufacturer;
- Others.
5.10.3 Hazard protection
The screen shall be able to protect against hazards related to electric shock, energy, fire, heat,
machinery, etc.
5.11 Electromagnetic compatibility
It shall comply with the provisions of 3.9 in QC/T 413-2002.
5.12 Immunity
The immunity requirements of the screen shall comply with the provisions of GB/T 22630-
2008.
5.13 Environmental adaptability
5.13.1 High temperature load test
According to the provisions of GB/T 2423.2-2008, the screen is operated at rated voltage for
16 h at 55°C. Immediately after the test, the structure, appearance, mechanical properties,
optical properties, electrical properties, and functional characteristics of the screen shall be
inspected and shall meet the requirements of Articles 5.5, 5.6, 5.7, 5.8, and 5.9 of this Standard.
5.13.2 High temperature storage test
According to the provisions of GB/T 2423.2-2008, the screen is stored at 70°C for 2 h and
restored at room temperature for 4 h; then the structure, appearance, mechanical properties,
optical properties, electrical properties, and functional characteristics of the screen shall be
inspected and shall meet the requirements of Articles 5.5, 5.6, 5.7, 5.8, and 5.9 of this Standard.
5.13.3 Constant damp heat test
According to the provisions of GB/T 2423.3-2006, the screen is operated at rated voltage for
48 h at a temperature of 45°C and a relative humidity of 90%. Immediately after the test, the
structure, appearance, mechanical properties, optical properties, electrical properties, and
functional characteristics of the screen shall be inspected, and shall meet the requirements of
5.5, 5.6, 5.7, 5.8, and 5.9 of this Standard.
5.13.4 Low temperature load test
According to the provisions of GB/T 2423.1-2008, the screen is operated at rated voltage for 1
hour at -10°C. Immediately after the test, the structure, appearance, mechanical properties,
optical properties, electrical properties, and functional characteristics of the screen shall be
- Illuminance meter. indication error less than ±3%;
- The accuracy level of the power test instrument is Level-1.0;
- The rest of the test equipment and test software refer to the requirements of 3.2 in SJ/T
11281-2007.
6.3 Hardware environment
According to the functional requirements, check the control part host, communication interface,
and screen installation structure of the screen one by one, and they shall meet the requirements
of 5.3.
...