SH/T 3407-2013Spiral wound gaskets for steel pipe flanges in petrochemical industry (English PDF)

4.1 Classification

4.1.1 By the use environment

The panels are divided into indoor panels (for gymnasiums) and outdoor panels

(for stadiums).

4.1.4 By installation structure

The LED panels for stadium and gymnasium are divided into flat panels, bucket

panels, ring panels, according to different installation structures.

4.2 Characteristic grade

The optical performance, electrical performance, mechanical performance of

the panel are divided into three grades.

5.1 Standard test conditions

Unless otherwise specified, the test conditions are as follows.

The ambient temperature is 15 °C ~ 35 °C; the relative humidity is 15%RH ~

80%RH; the atmospheric pressure is 86 kPa ~ 106 kPa;

5.2 Functional characteristics of panel

5.2.1 Graphic & text panels

It has the display function of letters, numbers, text, charts, graphics. Each

primary color shall have a grayscale processing capability, which is greater than

level 16 (color level equal to 4 bits). The animation display is consistent with the

display of the corresponding area, on the main computer monitor.

5.2.4 Characters displayed on the flat panel

For the flat panels of swimming venues used for international competitions, they

must meet the requirements of the competition rules of the International

Swimming Federation.

5.2.6 Time display

Beijing time clock can display h, min, s. The digital game clock can be designed

as a rolling timing or backward timing, can pause timing, can display min, s, ms.

When used in a basketball game, it can be connected to a 24-second device,

to synchronously display the total remaining time of the game.

5.3 Optical performance

5.3.1 Optical performance of pixels, display modules, display module

group

5.3.2.2 View angle

The horizontal view angle of the panel, thetaS, is not less than ±50°; the vertical

upper view angle, thetaC, is not less than 10°; the vertical lower view angle of the

flat panel, thetaC, is not less than 35°; the vertical lower view angle of the bucket

panel, thetaC, is not less than 50°.

5.4.4 Load change rate of module group

5.4.7 Pixel out of control rate

Table 11 -- Grading of pixel out of control rate

5.4.8 Video display resolution

To ensure the video display effect of the video panel, the minimum resolution of

the video image displayed on the panel is 320 (W) x 240 (H).

5.5 Structure, appearance, mechanical properties of panels

5.5.1 Structure

5.14 Reliability requirements

For the reliability of the panel system for stadium and gymnasium, it shall meet

the requirements of 5.10 in SJ/T 11141-2003.

6.1 Test instrument and software

Color TV signal generator. S/N > 52 dB. Color analyzer. indication error <= ±5%

(Similar instruments, which are used to measure optical properties such as

brightness and chromaticity, are also available). Light intensity meter. indication

error < ±10%. Illuminance meter. indication error <= ±5%. Oscilloscope.

6.2 Test method

6.2.1 Functional characteristics of panels

6.2.1.1 Graphic & text panels

Use the host computer, which is installed with the basic operating system

software AND the display software (LED multimedia editing studio software,

etc.),

6.2.1.2 Video panel

Use the host computer, which is installed with the basic operating system

software AND the display software (LED multimedia editing studio software,

etc.), that can meet the requirements of its display function, to run the video

panel. Compare the panel with the monitor of host computer. Except for visual

inspection of all functions of the graphics & text panel, it is necessary to display

computer animation, to compare and check the animation function; meanwhile

use the video source to check the function of the video signal, which shall meet

the requirements of 5.2.2.

6.2.1.5 Maximum viewing distance and character height

Calculate the character height, according to the pixel center distance of the

tested panel for stadium and gymnasium. Calculate the maximum viewing

distance approximately, according to formula (1), which shall meet the

requirements of 5.2.5.

6.2.2 Optical performance

6.2.2.1 Optical performance of pixels, display modules, display module

groups

6.2.2.1.1 Dominant wavelength error of primary color

It is tested and calculated, according to the method, which is specified in 4.2.4

of SJ/T 11281.The results shall meet the requirements of 5.3.1.1.

6.2.2.1.2 Uniformity of pixel intensity

It is tested and calculated, according to the method, which is specified in 4.2.7.1

of SJ/T 11281.The results shall meet the requirements of 5.3.1.2.

6.2.4.3 Mechanical properties

6.2.4.3.1 Assembly accuracy

6.2.4.3.1.1 Flatness

It is tested according to the method, which is specified in 4.1.2.1 of SJ/T 11281;

the results shall meet the requirements of 5.5.3.1.1.

6.2.4.3.1.2 Relative deviation of pixel center distance

It is tested and calculated according to the method, which is specified in 4.1.2.2

of SJ/T 11281; the results shall meet the requirements of 5.5.3.1.2.

7.1 Inspection items

This product is divided into identification inspection and quality consistency

inspection. The inspection rules are in accordance with the relevant

requirements in Chapter 7 of SJ/T 11141-2003.The inspection items and

requirements are in accordance with the regulations in Table 17.

7.2 Identification

7.2.3.1 Randomly select two panels, from the same batch of products, that have

passed the final process inspection. According to the items and sequence in

Table 17, check the functional characteristics, optical performance, electrical

performance, structure, appearance and mechanical performance, hardware

environment, software environment, safety requirements, power supply, of the

panel, which shall meet the requirements of 5.2 ~ 5.9.

7.3.3.3 Sampling plan

Randomly select three display module groups from the batches, that passed

the group A inspection, as samples, for environmental adaptability inspection.

7.3.5.2 Qualification judgment

According to GB/T 11463 Chapter 7 Failure and judgement criteria of failure,

Chapter 8 Acceptance and rejection judgments, for the panel which fails the

reliability test, it is not allowed to be exit-factory.

8.1 Markings

8.1.1 Product mark

8.1.1.1 The nameplate shall be installed on the appropriate position of the panel.

8.1.2 Packaging mark

The marking on the outer packaging box of the panels shall meet the

requirements of GB/T 6388.

8.2 Packaging

8.2.1 It is packed in a packing box, that meets the requirements of the outer

packaging mark.

8.3 Transportation

The packaged products can be transported by conventional means of

transportation; however, the transportation process shall avoid exposure to rain

and snow, prolonged exposure to the sun, contact with corrosive gases, or

mechanical damage.

8.4 Storage

The range of storage temperature of the panel is 0 °C ~ 40 °C. The range of

relative humidity is 30%RH ~ 80%RH. The panel shall be stored in a ventilated

and dry warehouse, without acid, alkali and corrosive gas in the surrounding

environment. There is no strong mechanical vibration, shock, or strong

magnetic field.

SJ/T 11406-2009

SJ

ELECTRONIC INDUSTRY STANDARD

ICS 31.120

L 63

Record No..

Specification of LED panels for stadium and

gymnasium

Issued on. NOVEMBER 17, 2009

Implemented on. JANUARY 01, 2010

Issued by. Ministry of Industry and Information Technology of PRC

Table of Contents

Foreword... 4

4.1 Classification... 8

4.2 Characteristic grade... 8

5.1 Standard test conditions... 8

5.2 Functional characteristics of panel... 9

5.3 Optical performance... 11

5.4 Electrical performance of panels... 12

5.5 Structure, appearance, mechanical properties of panels... 13

5.6 Hardware environment of panel... 15

5.7 Software environment of panel... 17

5.8 Safety requirements... 17

5.9 Power supply... 17

5.10 Environmental adaptability... 18

5.11 Electromagnetic compatibility... 18

5.12 Resistance to wind pressure... 18

5.13 Anti-corrosion... 18

5.14 Reliability requirements... 19

6.1 Test instrument and software... 19

6.2 Test method... 19

7.1 Inspection items... 27

7.2 Identification... 27

7.3 Quality consistency inspection... 29

8.1 Markings... 32

8.2 Packaging... 32

8.3 Transportation... 33

8.4 Storage... 33

References... 34

4.1 Classification

4.1.1 By the use environment

The panels are divided into indoor panels (for gymnasiums) and outdoor panels

(for stadiums).

4.1.4 By installation structure

The LED panels for stadium and gymnasium are divided into flat panels, bucket

panels, ring panels, according to different installation structures.

4.2 Characteristic grade

The optical performance, electrical performance, mechanical performance of

the panel are divided into three grades.

5.1 Standard test conditions

Unless otherwise specified, the test conditions are as follows.

The ambient temperature is 15 °C ~ 35 °C; the relative humidity is 15%RH ~

80%RH; the atmospheric pressure is 86 kPa ~ 106 kPa;

5.2 Functional characteristics of panel

5.2.1 Graphic & text panels

It has the display function of letters, numbers, text, charts, graphics. Each

primary color shall have a grayscale processing capability, which is greater than

level 16 (color level equal to 4 bits). The animation display is consistent with the

display of the corresponding area, on the main computer monitor.

5.2.4 Characters displayed on the flat panel

For the flat panels of swimming venues used for international competitions, they

must meet the requirements of the competition rules of the International

Swimming Federation.

5.2.6 Time display

Beijing time clock can display h, min, s. The digital game clock can be designed

as a rolling timing or backward timing, can pause timing, can display min, s, ms.

When used in a basketball game, it can be connected to a 24-second device,

to synchronously display the total remaining time of the game.

5.3 Optical performance

5.3.1 Optical performance of pixels, display modules, display module

group

5.3.2.2 View angle

The horizontal view angle of the panel, thetaS, is not less than ±50°; the vertical

upper view angle, thetaC, is not less than 10°; the vertical lower view angle of the

flat panel, thetaC, is not less than 35°; the vertical lower view angle of the bucket

panel, thetaC, is not less than 50°.

5.4.4 Load change rate of module group

5.4.7 Pixel out of control rate

Table 11 -- Grading of pixel out of control rate

5.4.8 Video display resolution

To ensure the video display effect of the video panel, the minimum resolution of

the video image displayed on the panel is 320 (W) x 240 (H).

5.5 Structure, appearance, mechanical properties of panels

5.5.1 Structure

5.14 Reliability requirements

For the reliability of the panel system for stadium and gymnasium, it shall meet

the requirements of 5.10 in SJ/T 11141-2003.

6.1 Test instrument and software

Color TV signal generator. S/N > 52 dB. Color analyzer. indication error <= ±5%

(Similar instruments, which are used to measure optical properties such as

brightness and chromaticity, are also available). Light intensity meter. indication

error < ±10%. Illuminance meter. indication error <= ±5%. Oscilloscope.

6.2 Test method

6.2.1 Functional characteristics of panels

6.2.1.1 Graphic & text panels

Use the host computer, which is installed with the basic operating system

software AND the display software (LED multimedia editing studio software,

etc.),

6.2.1.2 Video panel

Use the host computer, which is installed with the basic operating system

software AND the display software (LED multimedia editing studio software,

etc.), that can meet the requirements of its display function, to run the video

panel. Compare the panel with the monitor of host computer. Except for visual

inspection of all functions of the graphics & text panel, it is necessary to display

computer animation, to compare and check the animation function; meanwhile

use the video source to check the function of the video signal, which shall meet

the requirements of 5.2.2.

6.2.1.5 Maximum viewing distance and character height

Calculate the character height, according to the pixel center distance of the

tested panel for stadium and gymnasium. Calculate the maximum viewing

distance approximately, according to formula (1), which shall meet the

requirements of 5.2.5.

6.2.2 Optical performance

6.2.2.1 Optical performance of pixels, display modules, display module

groups

6.2.2.1.1 Dominant wavelength error of primary color

It is tested and calculated, according to the method, which is specified in 4.2.4

of SJ/T 11281.The results shall meet the requirements of 5.3.1.1.

6.2.2.1.2 Uniformity of pixel intensity

It is tested and calculated, according to the method, which is specified in 4.2.7.1

of SJ/T 11281.The results shall meet the requirements of 5.3.1.2.

6.2.4.3 Mechanical properties

6.2.4.3.1 Assembly accuracy

6.2.4.3.1.1 Flatness

It is tested according to the method, which is specified in 4.1.2.1 of SJ/T 11281;

the results shall meet the requirements of 5.5.3.1.1.

6.2.4.3.1.2 Relative deviation of pixel center distance

It is tested and calculated according to the method, which is specified in 4.1.2.2

of SJ/T 11281; the results shall meet the requirements of 5.5.3.1.2.

7.1 Inspection items

This product is divided into identification inspection and quality consistency

inspection. The inspection rules are in accordance with the relevant

requirements in Chapter 7 of SJ/T 11141-2003.The inspection items and

requirements are in accordance with the regulations in Table 17.

7.2 Identification

7.2.3.1 Randomly select two panels, from the same batch of products, that have

passed the final process inspection. According to the items and sequence in

Table 17, check the functional characteristics, optical performance, electrical

performance, structure, appearance and mechanical performance, hardware

environment, software environment, safety requirements, power supply, of the

panel, which shall meet the requirements of 5.2 ~ 5.9.

7.3.3.3 Sampling plan

Randomly select three display module groups from the batches, that passed

the group A inspection, as samples, for environmental adaptability inspection.

7.3.5.2 Qualification judgment

According to GB/T 11463 Chapter 7 Failure and judgement criteria of failure,

Chapter 8 Acceptance and rejection judgments, for the panel which fails the

reliability test, it is not allowed to be exit-factory.

8.1 Markings

8.1.1 Product mark

8.1.1.1 The nameplate shall be installed on the appropriate position of the panel.

8.1.2 Packaging mark

The marking on the outer packaging box of the panels shall meet the

requirements of GB/T 6388.

8.2 Packaging

8.2.1 It is packed in a packing box, that meets the requirements of the outer

packaging mark.

8.3 Transportation

The packaged products can be transported by conventional means of

transportation; however, the transportation process shall avoid exposure to rain

and snow, prolonged exposure to the sun, contact with corrosive gases, or

mechanical damage.

8.4 Storage

The range of storage temperature of the panel is 0 °C ~ 40 °C. The range of

relative humidity is 30%RH ~ 80%RH. The panel shall be stored in a ventilated

and dry warehouse, without acid, alkali and corrosive gas in the surrounding

environment. There is no strong mechanical vibration, shock, or strong

magnetic field.

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