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GB 25957-2010: Minimum allowable values of energy efficiency and energy efficiency grades for digital television adapters (set-top boxes)
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Minimum allowable values of energy efficiency and energy efficiency grades for digital television adapters (set-top boxes)
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GB 25957-2010
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Basic data
| Standard ID | GB 25957-2010 (GB25957-2010) |
| Description (Translated English) | Minimum allowable values of energy efficiency and energy efficiency grades for digital television adapters (set-top boxes) |
| Sector / Industry | National Standard |
| Classification of Chinese Standard | F01 |
| Classification of International Standard | 27.010 |
| Word Count Estimation | 10,173 |
| Date of Issue | 2011-01-10 |
| Date of Implementation | 2011-07-01 |
| Quoted Standard | GB/T 2829-2002; GB/T 14857; GB/T 17700; GB/T 17975.1; GB/T 17975.2; GB/T 17975.3; GB/T 20600; GB 20943; GD/JN 01; GY/T 155; GY/T 170; IEC 62087-2008 |
| Regulation (derived from) | Announcement of Newly Approved National Standards No. 1 of 2011 (No. 166 overall) |
| Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China |
| Summary | This Chinese standard specifies the general-purpose digital TV receiver energy efficiency rating, energy efficiency limit values ??, evaluating values ??of energy, power, test methods and inspection rules. This standard applies to 220V, 50Hz power grid to work under a receiver, including cable receivers, terrestrial receivers and satellite receivers. |
GB 25957-2010: Minimum allowable values of energy efficiency and energy efficiency grades for digital television adapters (set-top boxes)
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Minimum allowable values of energy efficiency and energy efficiency grades for digital television adapters (set-top boxes)
ICS 27.010
F01
National Standards of People's Republic of China
Digital TV receivers (Set Top Box) Limited values of energy efficiency
Energy efficiency rating
digitaltelevisionadapters (set-topboxes)
Issued on. 2011-01-10
2011-07-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
4.2 This standard is mandatory, the rest are recommended.
Appendix A of this standard is a normative appendix.
This standard was proposed by the National Development and Reform Commission Resource Conservation and Environmental Protection.
This standard by the National Standardization Technical Committee for Energy and Management.
This standard drafting units. China National Institute of Standardization, the National Radio and Television Product Quality Supervision and Inspection Center, national computer Quality
Supervision and Inspection Center, China Saibao Laboratory, Qingdao Hisense Broadband Multimedia Technology Co., Ltd., Beijing Gehua CATV Network Co. Shares
The company, Tianjin Group-wide Electronic Technology Co., Ltd., Sichuan Changhong Network Technology Co., Ltd., Matsushita Electric Research and Development (China) Limited
Division, the number of Source Technology Co., Ltd., TCL KONE Electronics (Huizhou) Co., Ltd., Guangzhou Institute of CVC detection technology.
The main drafters of this standard. Li Pengcheng, Hai Hung Chen, Ruan Weihong, Wu Wei Hua, Zhou Xinghua, Jiang Weihong, She Zhiyong, Liu Lei, cinnamon room, Wang Zhen,
Liang Jun, Diwen Guo, Shen Lin, Peng Weirun.
Digital TV receivers (Set Top Box) Limited values of energy efficiency
Energy efficiency rating
1 Scope
This standard specifies the general-purpose digital television receiver (also known as set-top boxes, hereinafter referred to as the receiver) the energy efficiency rating, energy efficiency limit value,
Evaluating values of energy, power, test methods and inspection rules.
This standard applies to the receiver to work properly under 220V, 50Hz power grid, including cable receivers, terrestrial receivers and Wei
Star receiver.
2 Normative references
The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent
Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research
Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.
GB/T 2829-2002 periodic inspection Sampling procedures and tables (suitable for process stability test)
GB/T 14857 specifications of encoding parameters of digital television studio
GB/T 17700 satellite digital TV broadcasting channel coding and modulation standard
GB/T 17975.1 Information technology - Generic coding of moving pictures and associated audio information - Part 1. System
GB/T 17975.2 Information technology - Generic coding of moving pictures and associated audio information - Part 2. Video
GB/T 17975.3 Information technology - Generic coding of moving pictures and associated audio information - Part 3. Audio
GB/T 20600 digital television terrestrial broadcasting system frame structure, channel coding and modulation
GB 20943 single output AC - DC and AC - AC external power supply energy efficiency of limited value and energy conservation evaluation values
GD/JN01 advanced broadcasting system - satellite transmission system frame structure, channel coding and modulation. Safe Mode
GY/T 155 high-definition television program production and exchange with the video parameters
GY/T 170 cable digital television broadcast channel coding and modulation specification
IEC 62087.2008 audio, video and related equipment power consumption measurement method (Methodsofmeasurementforthe
powerconsumptionofaudio, videoandrelatedequipment)
3 Terms and Definitions
The following terms and definitions apply to this standard.
3.1
Job status onmode
The receiver is connected to the power grid, providing the main function of the state.
3.2
Passive standby standbypassivemode
The receiver is connected to the mains power supply, low power state does not provide the main functions. The receiver only receives remote control, buttons and other external shock
After the signal to enter the state. Excitation means by remote control, etc. of the internal signal, the receiver can return from the working state
status.
3.3
Receiver energy efficiency limit theminimumalowablevaluesofenergyefficiencyfordigitaltelevisionadapters
Under standard test conditions, the maximum power allowed by the receiver operating state and passive standby mode.
3.4
Receiver energy conservation evaluation values theevaluatingvaluesofenergyconservationfordigitaltelevisionadapters
Under standard test conditions, the maximum power allowed by the receiver energy-saving operating state and passive standby mode.
4. Technical Requirements
4.1 energy efficiency rating
Receiver energy efficiency rating is divided into 3, with 1 being the highest energy efficiency rating. Receiver each grade working state power and passive standby power
Rate shall be no greater than specified in Table 1. Table ΣPfa is a receiver operating state of the additional features and power factor, watts (W), additional
Computing power factor, see 5.2.
Table 1 Receiver various energy efficiency class working state power and passive standby power in watts
Receiver Type
Energy efficiency rating
Level 1 2 3
Working state power
Pon
Passive standby power
Psp
Working state power
Pon
Passive standby power
Psp
Working state power
Pon
Passive standby power
Psp
Cable Receiver 5.0 ΣPfa 1.0 7.0 ΣPfa 2.0 10.0 ΣPfa 3.0
Receivers on the ground 5.0 ΣPfa 1.0 7.0 ΣPfa 2.0 10.0 ΣPfa 3.0
Satellite Receivers 7.0 ΣPfa 1.0 9.0 ΣPfa 2.0 12.0 ΣPfa 3.0
4.2 energy efficiency limit
Receiver energy efficiency limit value of energy efficiency rating of three.
4.3 evaluating values of energy
Receiver energy saving evaluation value energy efficiency rating of two.
Use single output AC - DC and AC - AC external power supply of the receiver, an external power supply used should comply with the GB 20943
Requirements saving evaluation value.
5 Test and calculation methods
5.1 Test Method
Press the test methods in Appendix A of the receiver operating status of power and passive standby power testing.
Computing power factor 5.2 Additional features
Receiver Additional features power factor is determined by the look-up table 2, shall be determined in accordance with all the main functions of the receiver in working condition available
Additional features of the set and the power factor.
Table 2 Receiver Additional features power factor table
Additional features Additional features Additional features power factor Pfa Description
HD output 3.0W
Under the internal hard disk read and write 2.2W non-state
HDMI Interface 1.0W
ADSL modem 2.0W
Dual tuner 2.0W
Cable Modem
(CableModem)
4.5W
Ethernet interface 0.4W/non-connected state
USB interface 0.3W/a device is not connected state
6 Inspection rules
6.1 factory inspection
6.1.1 energy efficiency of limited value should be used as a receiver factory inspection items.
6.1.2 Upon examination identified energy efficiency limit value does not match the receiver 4.2 does not allow the factory.
6.2 Type inspection
6.2.1 one of the following occurs when the receiver should be energy efficiency limit type test.
a) new product trial;
b) changes in product design, workmanship or materials used significantly affect its performance;
c) when the quality and technology supervision department inspection requirements.
6.2.2 type test sample according to GB/T 2829-2002 predetermined discrimination level Ⅰ, subsampling scheme. Its sample size, sub
Grid quality level (RQL) and the corresponding number of groups is determined in Table 3.
Table 3 type test sample of substandard quality level and determine the number of groups
Test items and sample size determination array RQL
Receiver energy efficiency limit
N1 = 3
N2 = 3
┌0,2┐
40│ │
└1,2┘
Appendix A
(Normative)
Digital television receiver (STB) Power Test Method
A.1 measurement environment
A.1.1 Environmental conditions
Measured at a temperature, humidity and pressure conditions within the following ranges.
--- Ambient temperature. 15 ℃ ~ 35 ℃;
--- Relative humidity. 25% to 75%;
--- Atmospheric pressure. 86kPa ~ 106kPa.
A.1.2 Power
Voltage is AC 220V, frequency of 50Hz. Test uses AC power supply voltage and frequency fluctuations are not greater than
± 2%, no more than three percent harmonic distortion.
A.2 Test Instrument
Active power meter power meter, resolution of at least 0.01W, minimum current range ≤10mA, ensuring continuous working conditions, measuring
Accuracy of better than 5%.
A.3 Test Method
A.3.1 Receiver settings
Receiver settings are as follows.
A) The receiver has additional functions not included in Table 2, which can be closed by the user function as it should be closed;
b) when the receiver is powered by an external power adapter, the receiver should be adopted standard adapter for testing.
A.3.2 input signal
HD-definition digital video and audio test signal shall comply with GB/T 17975.1, GB/T 17975.2, GB/T 17975.3,
Provisions GY/T 155, the signal format of 1920 × 1080i/50Hz.
Standard-definition digital video and audio test signal shall comply with GB/T 17975.1, GB/T 17975.2, GB/T 17975.3,
The provisions of GB/T 14857, the signal format of 720 × 576i/50Hz.
A.3.3 video test signal
Video test signals using IEC 62087. 50Hz sequence of activities in the 2008 regulations.
A.3.4 Cable Receiver standard test conditions
A.3.4.1 cable receivers should be tested according to the video output format selection conditions, respectively. When the receiver is able to provide two output formats
When two conditions required for all tests, and two conditions of maximum power value as a receiver power.
A.3.4.2 Cable Receiver status Ⅰ standard test conditions as follows.
a) requirements for channel. channel coding compliance GY/T 170's;
b) single-channel video bit rate. 2Mbps ~ 15Mbps;
c) Symbol rate. 3.52MS/s ~ 6.89MS/s;
d) packet length. 188Byte;
e) Modulation. 64QAM;
f) convolutional interleaver depth. I = 12;
g) rolloff factor. α = 0.15;
h) Frequency. 110MHz ~ 862MHz;
i) Standard input level. 60dBμV;
j) noise bandwidth. signal bandwidth/(1 α);
k) the audio output device under test is adjusted to the maximum;
l) the video output format in Table A.1.
Table A.1 Cable Receiver standard test conditions status Ⅰ video output format
Input signal lines than the interlaced scanning format
Horizontal Frequency
kHz
Field frequency
Hz
Amplitude ratio
MP @ ML 720 × 576i 2.1 625 15.625 50 4.3
A.3.4.3 Cable Receiver status Ⅱ standard test conditions as follows.
a) requirements for channel. channel coding compliance GY/T 170's;
b) single-channel video bit rate. 2Mbps ~ 25Mbps;
c) Symbol rate. 3.52MS/s ~ 6.89MS/s;
d) packet length. 188Byte;
e) Modulation. 64QAM;
f) convolutional interleaver depth. I = 12;
g) rolloff factor. α = 0.15;
h) Frequency. 110MHz ~ 862MHz;
i) Standard input level. 60dBμV;
j) noise bandwidth. signal bandwidth/(1 α);
k) the audio output device under test is adjusted to the maximum;
l) the video output format shown in Table A.2.
Table A.2 Cable Receiver standard test conditions state Ⅱ video output format
Input signal lines than the interlaced scanning format
Horizontal Frequency
kHz
Field frequency
Hz
Amplitude ratio
MP @ HL 1920 × 1080i 2.1 1125 28.125 50 16.9
A.3.5 receivers on the ground standard test conditions
A.3.5.1 receivers on the ground should be tested according to the modulation scheme selection condition respectively. When the receiver is able to provide two demodulation mode,
Two conditions required for all state tests, and two conditions of maximum power value as a receiver power.
A.3.5.2 receivers on the ground state Ⅰ standard test conditions as follows.
a) channel coding compliance GB/T 20600; and
b) nominal bandwidth channel. 8M;
c) effective bandwidth. 7.56M;
d) rolloff factor. α = 0.05;
e) Standard input level. 50dBμV;
f) modulation scheme, see Table A.3.
Table A.3 receivers on the ground state standard test conditions Ⅰ modulation
modulation
the way
Carrier
the way
Symbol constellation
Mapping
Header
Forward Error Correction
Rate
symbol
Interweave
Net rate
Mbps
1 C = 1 32QAM PN595 0.8 720 25.989
A.3.5.3 receivers on the ground state Ⅱ standard test conditions as follows.
a) channel coding compliance GB/T 20600; and
b) nominal bandwidth channel. 8M;
c) effective bandwidth. 7.56M;
d) rolloff factor. α = 0.05;
e) Standard input level. 50dBμV;
f) modulation, Table A.4.
Table A.4 receivers on the ground state standard test conditions Ⅱ modulation
modulation
the way
Carrier
the way
Symbol constellation
Mapping
Header
Forward Error Correction
Rate
symbol
Interweave
Net rate
Mbps
7 C = 3780 16QAM PN945 0.4 720 9.626
A.3.6 Satellite Receiver standard test conditions
A.3.6.1 satellite receiver should be tested for the channel coding mode selection according to operating conditions, respectively. When the receiver is able to provide a variety of demodulation
, The need for a variety of working conditions are fully tested and the maximum power value as a receiver power.
A.3.6.2 Satellite Receiver status Ⅰ standard test conditions as follows.
a) channel coding compliance GD/JN01's;
b) Input frequency range 950MHz ~ 1450MHz;
c) single-channel video bit rate. 500kbps ~ 10Mbps;
d) Standard input level. 65dBμV;
e) Modulation. QPSK;
f) the channel coding rate. 3/4;
g) roll-off factor. 0.25;
h) Symbol rate. 28.8MS/s;
i) Video Format. MP @ ML, ie 720 × 576i.
A.3.6.3 Satellite Receiver standard test conditions state Ⅱ as follows.
a) channel coding compliance GB/T 17700; and
b) single-channel video bit rate. 2Mbps ~ 15Mbps;
c) Symbol rate. 2MS/s ~ 30MS/s;
d) packet length. 188Byte;
e) an inner code rate. 3/4;
f) convolutional interleaver depth. I = 12;
g) rolloff factor. α = 0.35;
h) RF frequency. 950MHz ~ 2150MHz;
i) receiving the measured input level. -40dBm;
j) noise bandwidth. signal bandwidth/(1 α);
k) measured the receiver audio output volume to maximum.
A.3.6.4 Satellite Receiver Ⅲ standard test conditions status as follows.
a) channel coding compliance GB/T 17700; and
b) single-channel video bit rate. 2Mbps ~ 25Mbps;
c) Symbol rate. 2MS/s ~ 45MS/s;
d) packet length. 188Byte;
e) an inner code rate. 3/4;
f) convolutional interleaver depth. I = 12;
g) rolloff factor. α = 0.35;
h) RF frequency. 950MHz ~ 2150MHz;
i) receiving the measured input level. -40dBm;
j) noise bandwidth. signal bandwidth/(1 α);
k) measured the receiver audio output volume to maximum.
A.4 Receiver Power Test Procedure
Receiver power tested in accordance with the following steps.
a) Figure A.1, the connecting test equipment and the receiver, turn on the power and test equipment in the test conditions specified in the standard, etc.
Wait time should be greater than 5min.
Figure A.1 Receiver Test power wiring diagram
b) Start the receiver and to reach the standard operating state, the input signal is a sequence of activities and kept in this state at least preheating
15min.
c) by integrating function with digital power meter (or electric meter) measured normal work integral receiver power value (E1) and measurement
Room (T1). By formula (A.1) to calculate the working state power (Pon). Measurement time T1 is not less than 15min;
Pon = E1/T 1 (A.1)
Where.
Pon --- working state power in watts (W);
Integrated power value E1 --- receiver units of watts (W · h);
T1 --- measurement time, the unit too (h).
d) by remote control or front panel switch allows the receiver enters a passive standby, waiting for 5min. Test instrument readings cleared, power monitoring
Meter readings at least 5min, if during reading fluctuation is less than 5%, then that reading is stable, it can be recorded directly power
Reading of passive standby power (Psp).
If the power meter reading is not stable, you need to use a power meter to monitor power having an average functionality of not less than 15min, the flat
Average power passive standby power. Or use with digital integration function power meter (or electric meter) Monitoring and less than 15min
To ensure that within the integration time samples more than 200 times, according to equation (A.2) calculated passive standby power.
Psp = E2/T 2 (A.2)
Where.
Psp --- Receiver passive standby power in watts (W);
Energy E2 --- receivers measured consumption of watts (W · h) units;
T2 --- passive standby time measuring unit too (h).
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