No. En-Tech 10705015400
Promulgate on September 18, 2018, and in effect on July 1, 2019
I. Scope and energy efficiency test conditions and methods, and energy efficiency criteria and test report shall conform to the following regulations for display energy saving labeling filing:
(I) Scope:
Products conform to definition given by the Chinese National Standards (hereinafter referred to as CNS) 62087-3 “Audio, video and related equipment – Determination of power consumption – Part 3: Television sets” or displays approved by the relevant competent authority.
(II) Test conditions and methods:
1. Regarding display with diagonal screen size over 76.2 cm: Test (average) power consumption at power-on mode according to CNS 62087-3 and CNS 62301 for standby mode.
(1) Play dynamic broadcast-content video signal for power-on mode power consumption measurements.
(2) Play three bar video signal for luminance peak value measurements.
(3) Regarding display with ABC power-saving function which is enabled when powering on by default, test its power-on mode power consumption at illumination conditions of 100 lx, 35 lx, 12 lx, 3 lx and calculate display’s power-on mode power consumption with 25% weighted index.
(4) Regarding power-on mode average power consumption, standby-passive mode average power consumption and peak luminance ratio for products without automatic brightness control (ABC) or displays with ABC function yet disabled by default when powering on: test them with ABC function disabled; displays with ABC function and enabled by default when power on: test them with ABC function enabled.
2. Regarding display of screen with diagonal length below 76.2 cm: Test it in accordance with Appendix 1.
(III) Energy efficiency criteria:
1. Display with a diagonal screen size of 76.2 cm or more:
(1) Round the measured power-on mode average power consumption to the nearest tenth; the outcome shall not outrun the display energy efficiency criteria in table 1.
(2) Round the measured average power consumption at standby-passive mode to the nearest hundredth; its outcome shall not outrun the display energy efficiency criteria given in table 1.
(3) Round factory default peak luminance ratio to the nearest whole number; the measured value should not underrun the display energy efficiency criteria in table 1.
2. Regarding display of screen with diagonal length below 76.2 cm:
(1) Regarding products without ABC power saving function: its average power-on mode power consumption shall not outrun the power consumption reference given in table 2; round these values to the nearest tenth.
(2) Regarding products with ABC power-saving function which can be disabled: its average power-on mode power consumption shall not outrun the power consumption benchmark given in table 2 when the function is disabled; for those cannot be disabled: its average power-on mode power consumption with ABC function shall not outrun the power consumption benchmark given in table 2.
(3) The average power consumption of sleep mode and power-off mode shall not exceed the energy efficiency criteria specified in table 2.
II. Power consumption marks of display’s energy saving labeling shall be subject to the following regulations:
(I) Mark label user name and address clearly on the product or its packaging.
(II) In case the said user is an agent, mark the name and address of the manufacturer on the product or its package as well.
(III) Regarding display of screen with diagonal length above 76.2 cm: Mark average power consumption at power-on and standby-passive mode on its catalog.
(IV) Regarding display of screen with diagonal length below 76.2 cm: Mark average power consumption at power-on, sleep, and power-off mode on its catalog.
Table 1:
| Energy Efficiency Criteria for Energy Label Qualified Displays Sets |
| Average power consumption (W) | Energy efficiency criteria formula |
Power on Mode
(W) | r≦2.0736 | (0.9)4×[198× tanh(0.000065×A–0.0515)+14] |
| r＞2.0736 | (0.9)3×[198× tanh(0.000065×A–0.0515)+14] |
| Standby mode (W) | 0.50 |
Factory default
Peak-luminance ratio | ≧65% | When luminance value at the brightest mode＜350cd/m2 |
| - | When luminance value at the brightest mode≧350cd/m2
,default mode luminance value≧228cd/m2 |
Note:
1.A is the visible screen area in unit of square centimeters (cm
2).
2.r is screen resolution in unit of megapixels (MP, Mega Pixels).
Table 2
Average power
consumption mode | Viewable screen diagonal
length (unit: mm) | Power consumption criteria (Watt) |
| Power on mode | d <304.8 | (4.2×r) + (0.0054×A) + 2.100 |
| 304.8 ≤ d<431.8 | (4.2×r) + (0.0011×A) + 3.850 |
| 431.8 ≤ d<584.2 | (4.2×r) + (0.0027×A) + 2.590 |
| 584.2 ≤ d<635.0 | (4.2×r) + (0.0065×A)-2.800 |
| 635.0 ≤ d<762.0 | (4.2×r) + (0.0109×A)-10.150 |
| Sleep mode | 0.50 |
| Power off mode | 0.50 |
Note:
1. Parameter “A” is the area of viewable screen in unit of square centimeter.
2. Parameter “r” is the screen resolution in unit of mega pixels (MP).
3. Parameter “d” is the viewable screen diagonal length in unit of mm.
Appendix I
I. Test according to Chinese National Standards (hereinafter referred to as CNS) 62087-3 at the following test environment setup:
(I) Ambient temperature: 23 °C±5°C
(II) Relative humidity: 10%~80%.
(III) Darkroom conditions: Screen illumination less than or equal to 1.0 lux during power-off mode. Regarding to products without power-off mode, disconnect the power cord before testing screen illumination.
(IV) The four corners of the front side shall be equidistant from the vertical reference plane (wall surface), and the two corners of the front bottom shall be equidistant from the horizontal reference plane (ground).
(V) Enable the ABC power saving light configuration:
1. Test light source: Standard spectrum floodlight reflecting halogen bulb.
2. Keep space in between the light bulb and the ambient light sensor of the display clear of obstacles.
3. Keep bulb center and the midpoint of the ambient luminance sensor on the same straight line and 152.4 cm apart.
4. Height from ground to the bulb center shall be flush with those from ground to ambient illuminance sensor.
5. Any surface (ground, ceiling, wall) of the test room should be more than 60.96 cm from the center of the ambient illuminance sensor.
II. Configuration settings
(I) Those with “mandatory menu” option for power on initialization: test them at “Standard” or “Home” setup. If none of the above settings exist, test it according to the manufacturer’s recommended settings and indicate it in the report. Regarding product without “mandatory menu”, test it with default value.
(II) Do not install Point of Deployment (POD) modules.
(III) Measure and note down individual sleep mode for those with multiple ones.
(IV) Peripheral and networking:
1. DO NOT connect external peripheral devices (mouse, keyboard, external hard drive, etc.) to USB port or other data port of the display.
2. Regarding products supporting bridge connection defined in ENERGY STAR Eligibility Criteria Version 7.1 Section 5.2 (Conditions for Power Measurements): Select one of available bridging methods (in the following priorities) to connect to the display and host and remain so throughout the test period.
(1) Thunderbolt.
(2) USB
(3) Firewire (IEEE 1394).
(4) Others
3. Regarding those with networking function: keep them in effective network connection throughout the test period. Regarding those with multiple networking functions: select one of them for connection in the priority given below:
(1) WiFi (IEEE 802.11-2007).
(2) Ethernet (IEEE 802.3) Regarding display that supports Energy Efficient Ethernet (IEEE 802.3az-2010): connect a device that supports IEEE 802.3az.
(3) Thunderbolt.
(4) USB
(5) Firewire(IEEE 1394)。
(6) Others.
(V) Regarding internal speaker and other product function without specific test methods set in the ENERGY STAR Eligibility Criteria Version 7.1 specification or test method: set them up according to factory default power configuration.
(VI) Note down other functions including flash memory card, smart card reader, camera interface, PictBridge, Occupancy Sensor in the test report.
(VII) Test their available interfaces in the sequence given below for those with multiple signal interfaces:
1. Thunderbolt.
2. DisplayPort.
3. HDMI
4. DVI
5. VGA.
6. Other digital interfaces.
7. Other analog interfaces.
(VIII) To enable Occupancy Sensor:
1. Prevent the display from switching into low power mode during the test period of warm-up, stability, brightness and power-on by having someone stand in the effective range of the Occupancy Sensor.
2. During sleep mode and power-off mode test, keep the display from entering higher power state.
(IX) Resolution and screen update frequency:
1. Employ default pixel format.
2. Unless otherwise specified in the product manual, set it screen refresh frequency at 60 Hz.
III. Brightness test
(I) Play “2011 video content_BD dynamic broadcast content video signal” for 20 minutes to warm up.
(II) Perform brightness test under darkroom conditions immediately after warming up.
(III) Measure brightness by placing the Light Measuring Device (LMD) perpendicular to the center of the screen; keep the LMD as close as possible to the screen or cover at least 500 pixels; keep LMD still relative to the screen throughout the test period.
(IV) Regarding products with ABC power-saving function: test their brightness with ABC power-saving function disabled. Regarding those cannot disable the ABC function: project 300 lux or stronger light on the ambient photometric sensor then test brightness at an angle perpendicular to the screen center.
(V) Make sure that settings of display brightness are in default mode or the “Home” mode.
(VI) Play video signal settings:
1. Adjust the image mode to the 3-color bar video signal according to Section 4.2.2.1 of CNS 62087-2.
2. Regarding those cannot be tested with the above signals: test them according to VESA FPDM2 L80 under the maximum resolution supported by the product.
3. Play the test video signal for at least 10 minutes to stabilize the brightness of the display. Regarding brightness measurements stabilizes in 2% range after 60 seconds: shorten stability period by 10 minutes.
(VII) Measure and record the brightness in the default or “Home” mode.
(VIII) Adjust the brightness and contrast of the display to its upper limit and measure and note down the maximum brightness.
(IX) Record the maximum brightness reported by the manufacturer.
IV. Power-on mode test procedure:
(I) Those without ABC power saving function, or with it and it can be disabled:
1. After the brightness test adjust the brightness of the screen up to 200cd/m2. If the brightness cannot be adjusted to 200cd/m2, set it to the closest level and record this in the test report; DO NOT adjust contrast.
2. Test power-on mode average power consumption in accordance with Section 6.1.2 of CNS 62087-3.
3. Regarding those unable to play “IEC 62087:2011 video content_BD dynamic broadcast content video signal”: test them in the following ways:
(1) Display VESA FPDM2, A112-2F, SET01K test screens.
(2) Validate compliance of input signal layer with VESA Video Signal Standard (VSIS) Rev.2.0.
(3) Display VESA FPDM2, A112-2H, L80 test screen.
(4) Validate the LMD test range all falls in the white area of the test screen.
(5) Adjust brightness of the white area of the screen up to 200 cd/m2.
(6) Note down screen brightness.
(7) Play “IEC 62087:2011 video content_BD dynamic broadcast content video signal” and measure the power consumption of power-on mode average for 10 minutes. Record power-on mode average power consumption and total pixel format.
(II) Enable the ABC power saving function:
1. Play the “IEC 62087:2011 video content_BD dynamic broadcast content video signal” to measure power-on mode average power consumption. Regarding products without “IEC 62087:2011 video content_BD dynamic broadcast content video signal” support: test them according to the following steps.
(1) Display VESA FPDM2, A112-2F, SET01K test screens.
(2) Validate compliance of input signal layer with VESA Video Signal Standard (VSIS) Rev.2.0.
(3) Display VESA FPDM2, A112-2H, L80 test screen.
2. Play “IEC 62087:2011 video content_BD dynamic broadcast content video signal” three times for 10 minutes to stabilize it at 30 minutes.
3. Set the test bulb illuminance output at 10 lux and 300 lux and place them on the surface of the ambient luminosity sensor.
4. Play “IEC 62087:2011 video content_BD dynamic broadcast content video signal” for 10 minutes; measure the power consumption of P10 and P300 at 10 lux and 300 lux respectively.
5. Calculate the average power consumption of the ABC function at power-on mode PABC=0.8×P300+0.2×P10.
6. Test measured power-on mode average power consumption according to test process for products without ABC power saving function after the latter is disabled; in case it cannot be disabled, test them in the following steps:
(1) If the brightness of the screen can be set to a fixed value given earlier, point a direct light of 300 lux or more to the ambient photometric sensor to test the product’s power-on mode average power consumption.
(2) If the brightness of the screen cannot be set to the fixed value given earlier, point a direct light of 300 lux or more to the ambient photometric sensor to test the product’s power-on mode average power consumption without tuning screen brightness.
(III) Round the average power-on mode power consumption (W) to the nearest tenth.
V. Power consumption measured in sleep mode:
(I) Test average power consumption of sleep mode according to Section 5 of CNS 62301:2011, round the outcome to the nearest hundredth.
(II) Connect the monitor to host when performing the sleep mode test. Define sleep mode of host computer defined in accordance with computer specification by ENERGY STAR Program Requirements for Computers Version 6.1
(III) Measure and note down individual sleep modes for those with multiple ones and can be selected manually or can be enabled in multiple methods.
(IV) Regarding products with auto sleep mode switching: their measured time shall last long enough to cover all modes to get the average value. The measurement method shall comply with the requirements specified in 5.3 of IEC 62301 (e.g. stability, measurement period, etc.).
VI. Average power consumption measured in power-off mode:
(I) Those with power-off mode should enter the power-off mode with the most convenient power switch once sleep mode test has ended.
(II) Test average power consumption of power-off mode according to section 5 of CNS 62301, round the outcome to the nearest hundredth, note down the power-off mode required adjustment and event sequence.
(III) When testing the average power consumption of power-off mode, skip the input synchronization signal check cycle.
(IV) Regarding products without physical power switch: execute measured by connecting the display to host at power-off mode.