【 Weak current College 】 led display common specifications 】

1 scope
This standard establishes the led display of definitions, classifications, technical requirements, test procedure, inspection rules and marks the storage requirements for transport packaging. This standard applies to led display products. It is the led display product design, manufacturing, installation, use, quality inspection and formulate technical standards, technical documents technical basis.
2 reference standards
The provisions contained in the following standard quoted in the standard to form the clauses of this standard. In the standard published, all versions are effective. All standards will be revised, using the standard parties should explore using the following criteria for the latest version of the possibilities.
GB191-pictorial diagram marks 90
GB2423.1-89 and electrical products testing of basic environmental testing regulations: A low-temperature test method
GB2423.2-89 electrician electronics basic environmental testing regulations test B: high temperature test method
GB2423.3-89 electrician electronics basic environmental testing regulations test Ca constant damp heat test method
GB4943-95 information technology devices (including electrical business equipment)
GB6388-86 transport packaging consignor logo
GB6587.4-86 vibration test of electronic measuring instruments
GB6587.6-86 experimental electronic measuring instruments transport
GB6593-86 electronic measuring instruments quality inspection rules
GB9813-88 miniature digital electronic computer General technical specifications
GB11463-89 reliability test of electronic measuring instruments
SJ/T10463-93 electronic measuring instruments packing, marking, storage requirements
3 definitions
This standard uses the following abbreviations and definitions:
3.1 LED led ligth emitting diode LED luminous diode's initials
3.2 led display (LED panel) through certain control methods, used to display text, text, graphics, images, animations, quotes and other information as well as television, video signal and led device array consisting of the display screen.
3.3 display unit (display unit) installed by the circuit and structure determination of and display capabilities of led display smallest unit.
3.4 fatal unqualified (critical defect) on the use, maintenance, product, or a related person may cause harm or insecurity, or units of the important characteristics of the product does not conform to the requirements or unit product quality characteristics of serious irregularities.
3.5 runaway points (out-of-control point) luminescent State and control requirements display status do not match and the discrete awarded LED luminous point. Basic
3.6 pseudo color led display (pseudo-color LED panel) in different areas of the led display different colors of single-color led device consisting of a led display.
3.7 full color led display (all-color LED panel) from red, green and blue is composed of three primary colors led device and adjustable many color led display.
4 classification
Led screen can be classified according to the following conditions:
4.1 use environment led display by using the environment into indoor LED sign and outdoor led sign.
4.2 display color led display by display colors are divided into single-color led display (including pseudo color LED display), dual-color led display and full-color (trichromatic) led display. According to the shades can be divided into 16, 32, 64, 128, 256-level grayscale, led display, etc.
4.3 display performance led display by display performance into text led display, LED display, computer graphics and video led screen, TV, video led screen and market led display, etc. Market led display generally include securities, interest rates, futures, and other uses of LED display screen.
4.4 basic non-luminous point market class led display, indoor led display led by a single point of diameter can be divided into 3 m m, Φ Φ 375 m m m m,Φ 5, Φ 8 m m, and Φ 10 m m, and other display; outdoor led display by using the pixel diameter Φ can be divided into 19 m m m, 22 m and Φ Φ m m 26, led display. Market class led screen in the use of digital tube size divisible 2.0cm (0.8inch), 2.5cm (1.0inch), 3.0cm (1.2inch), 4.6cmm (1.8inch), 5.8cm (2.3inch), 7.6cm (3inch) led display.
5 request
5.1 led display hardware usage environment
Led display hardware components including led display type, area, use the site, and other conditions of general computer parts, communication lines, dedicated data conversion and display section. In the detailed specification should indicate:
A. computer host, all kinds of matching cards, external devices and communications interface requirements;
B. requirements for communication line and indicate the maximum communication distance;
C. the data conversion section of the machine host means of communication;
D. power supply requirements and structure installation requirements.
5.2 led display software environment
OnDifferent performance of led display screen should be configured to meet the functional requirements of its display shows the software that has the following features:
A. comply with serialization, standardization requirements be backward compatible;
B. use the detailed specifications in the operating system and language;
C. has the perfect self test and as needed with various levels of Diagnostics;
D. special-purpose led display with its corresponding specialized software.
5.3 structure and appearance
5.3.1 structure led display segment can be steel, aluminum, wood and other materials. Requires strong structure, beautiful.
5.3.2 appearance led displays a bounding box without obvious scratches. Outdoor led display pixel pipe installation should be consistent, no loose and tube shell broken column.
5.4 security requirements led screen in the case of the I class GB4943 safety equipment.
5.4.1 led display protective earth terminal.
Tag 5.4.2 security
5.4.2.1 led screen protection earthing terminal should be marked.
5.4.2.2 led screen in the fuse box and switch the power supply should be a warning sign.
5.4.3 the leakage current in led display on leakage current must not exceed 3.5mA (AC RMS).
5.4.4 dielectric strength led screen can 50HZ, 1500V (AC RMS) test voltage 1min insulation breakdown should not occur.
5.4.5 temperature rise led display is when the party uses thermal equilibrium is reached after the metal part of the temperature rise shall not exceed hard 45K, insulation temperature rise shall not exceed 70K.
5.5 led display performance characteristics
Text led display and frame led screen should have the detail specification in the move out of the way and show the way.
Computer video led screen should have:
The animation function. Requirements for led display animated and computer monitor display consistent corresponds to the region; text display function. Request text display stable, clear crosstalk; grayscale function. Required to have provisions in the detailed specification of the level of gray. TV video led screen in addition to animation, text display, grayscale function, should be able to show, TV, video screen. Market led display with its corresponding ticker display capabilities.
5.6 uniformity should be provided in the detailed specification on led display uniformity requirements.
5.7 runaway points out indoor led display is not more than 35 points, outdoor led display control points should not at par; and as a discrete order.
5.8 power LED display monitor's power supply to 220W ± 10%, 50HZ ± 5% or ± 10%, 80V 50HXZ ± 5% shall be provided in the detailed specification for all kinds of led display units show area of maximum power consumption or total consumption of the led display.
5.9 environmental adaptability
5.9.2.1 temperature indoor screen environment temperature: working environment temperature: 00C; high temperature: + 400C. Low-temperature storage environment:-400C; high temperature: + 600C.
Outdoor screen environment temperature: working environment temperature: optional-200C,-high-temperature: + 100C; 500C. Low-temperature storage environment:-400C; high temperature: + 600C.
5.9.2.2 moist heat at the maximum operating temperature, the led screen should be in the relative humidity of 90% of the normal working condition.
5.9.3 vibration led display under cars, trains, aircraft and other transportation, loading and unloading, moving in vibration. Car screen should be in the installation of vehicle operation.
5.9.4 transport led screen can use cars, trains, aircraft and other common carriers.
5.10 reliability requirements led screen display unit average no fault working time MTBF (ml) of not less than 10000h.
6 test method
6.1 led display hardware usage environment with Visual mode check the led display hardware usage environment should meet the requirements of 5.1.
6.2 led display software using Visual styles check environment LED display monitor's software environment, should be consistent with the requirements of 5.2.
6.3 structure and appearance using Visual styles check led display monitor's structure and appearance, shall conform to the requirements of 5.3.
6.4 security requirements
6.4.1 grounding Visual mode check the led display, should meet the requirements of the 5.4.1.
6.4.2 security token using the Visual way to check the led display security tag 5.4.2, should meet the requirements.
6.4.3 on leakage current at rated power supply voltage 1.1 times, test led display power cord for the metal frame on the floor drain currents, should meet the requirements of article 5.4.3.
6.4.4 dielectric strength led display power switch is in the common position, the power input and the metal frame or reach metal structures imposed between 1500V (AC RMS), 1min, should meet the requirements of 5.4.4.
6.4.5 temperature rise led screen inthe work one hour later with a thermometer to test the reach point 5.4.5 temperature, should meet the requirements.
6.5Led display performance characteristics according to the different kinds of led display, led display performance characteristics for inspection, shall meet the requirements of 5.5. To text, graphics and led screen display test software is used by Visual inspection to move out of the way and show the way. On the computer video led screen through Visual, use show computer animation for comparison check animation features, with led display and computer monitor display to check the text, using a dedicated measurement software to check the grayscale function. On the TV video led screen in addition to the above animation, text, grayscale function checks, should also have the video source check TV and video functions. On various market led screen, you should use the beta software to check the ticker display.
6.6 led display uniformity with Visual styles check LED Xianping uniformity, should meet the requirements of 5.6.
6.7 led display control points with Visual mode check the led display monitor's out of control points, should meet the requirements of 5.7.
6.8 led display powered by wattmeter led display of power, the power supply shall meet the requirements of 5.8.
6.9 led display environment adaptability
6.9.1 high temperature load test high temperature load test according to the provisions on display GB2423.2 cell. indoor screen in (40 ± 2) 0C, outdoor screen to (50 ± 2) 0C conditions power work for 8h, once per hour. Led display for the text and graphics and led display check into moved out of the way, display mode, uniformity and out of control points. pair of computers video and TV video led screen check the animation function, text display function, gamma function, uniformity and out point. market led display for quotes display function check. Should meet 5.5, 6.6 and 5.7 requirements.
6.9.2 high temperature storage test hightemperature storage test according to the provisions on display GB2423.2 cells. (60 ± 2) conditions of storage 4h 0C, at room temperature after recovery, the text 4h LED display and frame led display check into moved out of the way, display, and control points. On the computer, video and TV video led screen check the animation function, text display function, gamma function, uniformity and out of control points. On the market to market led screen display function checks should meet 5.5., 5.6 and 5.7 requirements.
6.9.3 damp heat load testing-moisture load test according to the provisions on display GB2423.3 cell. indoor screen in (40 ± 2) 0C, relative humidity: 87%-93% of all conditions, outdoor screen to (50 ± 2) 0C, relative humidity: 87%-93% of the work under power, hourly into 8H once questioning. Led display for the text and graphics and led display check into moved out of the way, display mode, uniformity and out of control points. On the market for led display quotes function check. Should meet 5.5, 5.6 and 5.7 requirements.
6.9.4 constant damp heat test constant humidity test according to the provisions on display GB2423.3 cell. indoor screen in (40 ± 2) 0C, relative humidity: 87%-93% of all conditions, outdoor screen to (50 ± 2) 0C, relative humidity: 87%-93% of inventory 48H. Storage test immediately after, on the floor drain current, resistance strength and temperature measurements, should meet 5.4.3, 5.4.4, 5.4.5 of the request. Then restore the room temperature environment, the text after 4H LED display and frame led display check into moved out of the way, display mode, uniformity and out of control points. pair of computers video and TV video led screen check into moved out of the way, display mode, uniformity and out of control points. On the computer, video and TV video led screen check the animation function, text display function, gamma function, uniformity and out point. market led display to show feature check prices should meet 5.5., 5.6and 5.7 requirements.
6.9.7 BG6587.4 vibration test vibration test of the display unit in vibration frequency, amplitude as 5H-55H-5H 0.19MM conditions, 5IMN scan once, second direction, each direction scanning second-test is finished, the text led display and frame led display and frame led display check into moved out of the way, display mode, uniformity and out of control points. pair of computers video and TV video led screen check the animation function, text display function, grayscale, uniformity and out point. market led display and graphic display of led display screen for quotes should be functional check. meet 5.5, 5.6, and 5.7 requirements.
6.9.8 transport test migration test press GB6587.6 taxis-flow conditions on display unit-test is finished. text led display and frame led display check into moved out of the way, display mode, uniformity and out of control points. pair of computers video and TV video led screen check the animation function, text display function, gamma function, uniformity and out of control points. On the market to market led screen display function checks should meet 5.5., 5.6 and 7 requirements. For in-car mobile work led display, test should be conducted on-site transportation.
6.10 reliability test reliability test requirements by GB11463 display unit .A = 20%, B = 20%, DM = 3.0. in accordance with the contract provisions also allow for reliability verification test.
7 inspection rules
7.1 inspection items
7.2 identification test
7.2.1 qualification examination is divided into design qualification testing and production identification tests.
7.2.2 identification inspection by assigned sector or delegateQuality inspection units.
7.2.3 sampling methods and survey project
7.2.3.1 on led display hardware usage environment, software environment, structure and appearance, safety requirements, performance characteristics, uniformity, out of control, power supply
Check the power supply shall meet 5.1-5.8to requirements.
7.2.3.2 from 7.2.3.1 inspection qualified led screen randomly have a display unit for periodical inspection of environmental adaptability .9.
7.2.3.3 on identification of periodical of led display. 10 the requirements for reliability testing-the timer used GB11463 censored test programme 1-2.
7.2.3.4 on design and identification of led display for on-site use test.
7.2.4 eligible criteria in .2.3.1 inspection, 7.2.3.2, allowed the second non-lethal unqualified persons sentenced to more than to be ineligible.
7.2.3.3 inspection shall comply with the requirements of GB11463.
7.2.3.4 inspection shall conform to this standard and the led display enterprise standards.
7.3 quality consistency test
7.3.1 quality consistency test is divided into A set of test, inspection and group c F group test.
7.3.2 A group test
7.3.2.1 A group test the basic requirements for led display.
7.3.2.2 A group test project by an expression. Led display for each set of required; on any unqualified products shall be returned to the production sector repair
Provide inspection after the restart.
7.3.2.3 A group test by led display producers quality inspection department or Commission units responsible for the quality inspection, ordering party may be represented.
7.3.3 C group inspection
7.3.3.1 C group test for environmental adaptability tests.
7.3.3.2 mass-produced products, production interruption time greater than months, each batch should be environmental adaptability tests, continuous production of products once a year
Environmental adaptability tests. To change the design, engineering technology, major components and materials, to carry out environmental adaptability tests.
7.3.3.3 environmental adaptability tests by led display producers quality inspection department or Commission units responsible for the quality inspection.
Consistency in quality inspection of A group display unit in a random drawing to be set, forenvironmental adaptability tests.
7.3.3.4 in environmental adaptability tests the whole process allowed the second non-fatal. Having repaired from a non-qualified projects continue to carry out the inspection.
Environmental adaptability inspection unqualified led display, non-factory. And to all products and finished products for back testing-find out why always
Environmental adaptability tests again.
7.3.3.5 through environmental adaptability test samples shall bear the marking, should not be used as original factory.
7.3.4 F group inspection
7.3.4.1 F group test for reliability testing. Use of the sequential GB11463 censored test scenario 2-3
7.3.4.2 mass-produced products, should be carried out every year to test the reliability, continuous production of the product for two years, change major reliability test design, engineering
Arts, major components and materials to test for reliability.
7.3.4.3 reliability test by led display producers quality inspection department or Commission units responsible for the quality inspection. In quality consistency test qualified Hin
Indicated in the unit in a sample GB11463 demands, reliability test.
7.3.4.4 on reliability test of led screen, non-factory. And to all products and finished products are tested. Find out why after reinstall always reliability testing.
7.3.5 quality judgment first inspection shall comply with the requirements of this specification, the inspection shall A-F group. Quality conformance inspection.
8 packaging transport storage
Led display monitor's packaging, logo and the store should be consistent with the SJ/T 10463 requirements.
8.1 logo
8.1.1 product logo
8.1.1.1 should be in the proper location of led display screen on installation nameplate.
8.1.1.2 nameplate shall contain the following
A. trademarks;
B. product name or model;
C. date of production;
D. manufacturer name.
8.1.2 packaging labels led display carton marking shouldconform to the requirements of GB6388
A. product type and name;
B. trademarks;
C. manufacturing plant;
D. "up" and "handle with care" and "fear of wet" picture shows flags that gb191.
E. labelled number, date of g.w. and boxing.
8.2 packaging
8.2.1 use comply with the provisions of the outer packaging label box packaging.
8.2.2 packaging subject to moisture-proof, anti-vibration and corrosion requirements.
8.2.3 per batch box should be in the calibration of the enclosure is fitted with product inspection certificates, packing list, the spare parts accessories inventory and list of documents at random.
8.3 transport packing products available any transportTransport, the transport should prevent rain hit, Sun, Sun, long exposure corrosive gas and mechanical damage.
8.4 store led display storage temperature range: 0-400C, relative humidity is not more than 80 per cent of the surrounding environment without acid-base and corrosive gases, without strong mechanical vibration, shock and strong magnetic field.
The desired chart please refer to the original documents.