ENERGY STAR® Program Requirements
Product Specification for
Displays
Test Method
Rev. February – 2020

1 OVERVIEW
The following test method shall be used for determining product compliance with requirements in the
ENERGY STAR Eligibility Criteria for Displays.

2 APPLICABILITY
The following test method is applicable to all products eligible for qualification under the ENERGYSTAR Product Specification for Displays.
Note: The U.S. Department of Energy (DOE) has published the Test Procedure for Television Sets
Final Rule (78 FR 63823). Any product that is included in DOE’s scope of coverage for TVs shallultimately be tested according to the Test Procedure for Television Sets Rulemaking published by DOE
in Appendix H to subpart B of 10 CFR 430.

3 DEFINITIONS
Unless otherwise specified, all terms used in this document are consistent with the definitions in the
ENERGY STAR Eligibility Criteria for Displays.
A) Host Machine: The machine or device used as the source of video/audio signal for testing Displays. It
may be a computer or any other device capable of providing a video signal.
B) Tiled Display System: A testable configuration of Signage Displays in which multiple Signage
Displays are tiled together contiguously and supported by one or more modular external controllers
and one or more modular external power supplies to produce a single larger image.
C) Maximum Tiled Configuration: A Tiled Display System configured with the maximum number ofSignage Display panels supported by the same set of external support modules (e.g., power supplies,
controllers, etc.) that are needed to support a configuration with two panels. For the purposes of the
ENERGY STAR test, the Maximum Tiled Configuration is the primary configuration unless otherwise
instructed in the test method.

4 TEST SETUP
A) Test Setup and Instrumentation: Test setup and instrumentation for all portions of this method shallbe in accordance with the requirements of International Electrotechnical Commission (IEC)62301:2011, “Household electrical appliances - Measurement of standby power,” Section 4, “General
Conditions for Measurements,” unless otherwise noted in this document. In the event of conflicting
requirements, the ENERGY STAR Test Method shall take precedence.
B) Ac Input Power: Products capable of being powered from ac mains shall be connected to a voltage
source appropriate for the intended market, as specified in Table 1. If an external power supply isshipped with the product, it shall be used to connect the product to the specified voltage source.

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Table 1: Input Power Requirements for Products

MarketVoltage

VoltageTolerance

Maximum Total
Harmonic
Distortion

Frequency

Frequency
Tolerance

North America,
Taiwan115 V ac+/- 1.0 %

5.0 %

60 Hz

+/- 1.0 %Europe, Australia,
New Zealand

230 V ac+/- 1.0 %

5.0 %

50 Hz

+/- 1.0 %Japan

100 V ac+/- 1.0 %5.0 %50 Hz or
60 Hz+/- 1.0 %C) Dc Input Power:
1) Products may be tested with a dc source (e.g., via network or data connection) only if dc is the
only available source of power for the product (i.e., no ac plug or External Power Supply (EPS) is
shipped with the product).
2) Dc-powered products shall be installed and powered as directed by the manufacturer, using aport with the full specifications recommended for the Display (e.g., Universal Serial Bus (USB) 3.1
if applicable, even if backwards-compatible with USB 2.0).
3) The power measurement shall be made between the dc source (e.g., Host Machine) and thecable shipped with the product, including the losses introduced by the shipped cable. If no cableis shipped with the product, any cable between 2 and 6 feet long may be used in its place. The
resistance of the cable used to connect the Display to the point of measurement shall bemeasured and reported.
Note: The measured resistance of dc power cables includes the sum of resistances of both thedc supply voltage wire and the ground wire.
4) A spliced cable may be used between the shipped cable and dc source in order to connect thepower meter. If this method is used, the following requirements must be met:a) The spliced cable shall be used in addition to the shipped cable described in Section 4.C)3.
b) The spliced cable shall be connected between the dc source and the shipped cable.
c) The spliced cable shall be no longer than 1 foot.
d) For measuring voltage, the total amount of wiring used between the voltage measurement
and the shipped cable shall be less than 50 milliohms of resistance. This only applies to thewiring that is carrying load current.
Note: Voltage and current need not necessarily be measured at the same location, so longas the voltage is measured within 50 milliohms of the shipped cable.
e) The current measurement can be made either on the ground wire or the dc supply voltage
wire.
f)

Figure 1 depicts an example spliced cable setup using a USB 2.0-powered Display
connected to the Host Machine.

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Figure 1: Example Spliced USB 2.0 Cable ArrangementD) Ambient Temperature: Ambient temperature shall be 23o C ± 5o C.
E) Relative Humidity: Relative humidity shall be from 10% to 80%.
F) UUT Alignment:
1) All four corners of the face of the Unit Under Test (UUT) shall be equidistant from a verticalreference plane (e.g., wall).
2) The bottom two corners of the face of the UUT shall be equidistant from a horizontal reference
plane (e.g., floor).
G) Light Source for On Mode Testing:1) Lamp Type:a) Standard spectrum halogen flood reflector lamp. The lamp shall not meet the definition of“Modified spectrum” as defined in 10 CFR 430.2 - Definitions 1.
b) Rated Brightness: 980 ± 5% lumens.
2) Light Source Alignment For Testing Products With ABC Enabled By Default:a) There shall be no obstructions between the lamp and the UUT’s Automatic Brightness
Control (ABC) sensor (e.g., diffusing media, frosted lamp covers, etc.).
b) The center of the lamp shall be placed at a distance of 5 feet from the center of the ABC
sensor.
c) The center of the lamp shall be aligned at a horizontal angle of 0° with respect to the centerof the UUT’s ABC sensor.
d) The center of the lamp shall be aligned at a height equal to the center of the UUT’s ABC
sensor with respect to the floor (i.e. the light source shall be placed at a vertical angle of 0°
with respect to the center of the UUT’s ABC sensor).
e) No test room surface (i.e., floor, ceiling, and wall) shall be within 2 feet of the center of the
UUT’s ABC Sensor.
f)Illuminance values shall be obtained by varying the input voltage of the lamp.

g) Figure 2 and Figure 3 and provide more information on UUT and light source alignment.

1 http://www.gpo.gov/fdsys/pkg/CFR-2011-title10-vol3/pdf/CFR-2011-title10-vol3-sec430-2.pdf

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Figure 2: Test Setup - Top View

Notes:•

D1 = D2 with respect to vertical reference plane•

D1 and D2 indicate that the corners of the face of the UUT shall be at least 2 feetfrom the vertical reference plane•D3 and D4 indicate that the center of the light sensor shall be at least 2 feet fromthe room walls

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Figure 3: Test Setup - Side View

Notes:•

D1 = D2 with respect to vertical reference plane•

D1 and D2 indicate that the corners of the face of the UUT shall be at least 2 feetfrom the vertical reference plane•

Illuminance meter shall be removed for power measurements, after target
illuminance achieved•

H1 = H2 with respect to horizontal reference plane (e.g. floor)•

H3 and H4 indicate that the center of the light sensor must be at least 2 feet fromthe floor and 2 feet from the ceiling•

Illuminance meter removed for power measurements, after target illuminanceachievedH) Power Meter: Power meters shall possess the following attributes
1) Crest Factor:a) An available current crest factor of 3 or more at its rated range value; andb) Lower bound on the current range of 10 mA or less.
2) Minimum Frequency Response: 3.0 kHz
3) Minimum Resolution:a) 0.01 W for measurement values less than or equal to 10 W;

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Page 5 of 13b) 0.1 W for measurement values from greater than 10 W to 100 W; andc) 1.0 W for measurement values greater than 100 W.
I)

Luminance and Illuminance Meters:
1) Luminance measurement shall be performed using eithera) A contact meter; orb) A non-contact meter.
2) All luminance and illuminance meters shall have be accurate to ± 2% (± 2 digits) of the digitallydisplayed value.
3) Non-contact luminance meters shall have an acceptance angle of 3 degrees or less.
Note: The overall accuracy of a meter is found by taking (±) the absolute sum of 2% of themeasurement and a 2 digit tolerance of the displayed value least significant digit. For example, if an
illuminance meter displays “200.0” when measuring a screen brightness of 200 nits, 2% of 200 nits is
4.0 nits. The least significant digit is 0.1 nits. “Two digits” implies 0.2 nits. Thus, the displayed value
would be 200 ± 4.2 nits (4 nits + 0.2 nits).The accuracy is specific to the illuminance meter and shallnot be considered as tolerance during actual light measurements.

J) Measurement Accuracy:
1) Power measurements with a value greater than or equal to 0.5 W shall be made with anuncertainty of less than or equal to 2% at the 95% confidence level.
2) Power measurements with a value less than 0.5 W shall be made with an uncertainty of less thanor equal to 0.01 W at the 95% confidence level.
3) All ambient light values (measured lux) shall be measured at the location of the ABC sensor on
the UUT with light entering directly into the sensor and with the main menu from the test signal
from IEC 62087:2011, “Methods of measurement for the power consumption of audio, video andrelated equipment” displayed on the product. For products not compatible with the IEC test signal
format, ambient light values shall be measured with the Video Electronics Standard Association(VESA) Flat Panel Display Measurements Standard version 2.0 (FPDM2) FK test signal being
displayed on the product.
4) Ambient light values shall be measured within the following tolerances:a) At 12 lux, ambient lighting shall be within ± 1.0 lux; andb) At 300 lux, ambient lighting shall be within ± 9.0 lux.

5 TEST CONDUCT
5.1 Guidance for Power Measurements
A) Testing at Factory Default Settings: Power measurements shall be performed with the product in its
as-shipped condition for the duration of Sleep Mode and On Mode testing, with all user-configurable
options set to factory defaults, except as otherwise specified by this test method.
1) Picture level adjustments shall be performed per the instructions in this test method.

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2) Except where picture level adjustments are required by the instructions in the test method,
products shall be tested in the Default Picture Setting:a) For products that include a Forced Menu that requires picture setting selection upon initialstart-up, the Default Picture Setting shall be the “standard” or “home” Preset Picture Setting.
In the case that no standard setting or equivalent exists, the default setting recommended by
the manufacturer shall be used for testing and recorded in the test report.
b) For products that do not include a forced menu, the Default Picture Setting shall be thefactory default Preset Picture Setting selected in the as-shipped condition.
B) Point of Deployment (POD) Modules: Optional POD modules shall not be installed.
C) Plug-in Modules: Optional Plug-in Modules shall be removed from the Display if the Display can betested according to the test method without the module installed.
D) Sleep Mode with Multiple Functionalities: If the product offers multiple options for device behavior in
Sleep Mode (e.g., quick start) or multiple methods by which Sleep Mode may be entered, the power
during all Sleep Modes shall be measured and recorded. All Sleep Mode testing shall be carried out
as per Section 6.5.
E) Tiled Display Systems: Products that meet the definition of Tiled Displays Systems shall be tested in
the Maximum Tiled Configuration which is considered the UUT. The power meter shall be placed
between the power source and external power supply supporting the maximum number of panels. In
all other respects, Tiled Display Systems shall be tested and shall qualify for ENERGY STAR
certification according to the requirements for Signage Displays.

5.2 Conditions for Power Measurements
A) Power measurements:
1) Power measurements shall be taken from a point between the power source and the UUT. No
Uninterruptible Power Supply (UPS) units may be connected between the power meter and theUUT. The power meter shall remain in place until all On Mode, Sleep Mode and Off Mode power
data are fully recorded.
2) Power measurements shall be recorded in watts as directly measured (unrounded) values at a
rate of greater than or equal to 1 reading per second.
3) Power measurements shall be recorded after voltage measurements are stable to within 1%.
B) Dark Room Conditions:
1) Unless otherwise specified, the illuminance measured at the UUT screen with the UUT in Off
Mode shall be less than or equal to 1.0 lux. If the UUT does not have an Off Mode, theilluminance shall be measured at the UUT screen with the UUT’s power cord disconnected.
C) UUT Configuration and Control:
1) Peripherals and Network Connections:a) External peripheral devices (e.g. mouse, keyboard, external hard disk drive (HDD), speakersetc.) shall not be connected to USB ports or other data ports on the UUT.
b) Bridging: If the UUT supports bridging per the definition in Section 1 of the ENERGY STAR
Eligibility Criteria for Displays Version 8.0, a bridge connection shall be made between the
UUT and the Host Machine. The connection shall be made in the following order ofpreference. Only one connection shall be made and the connection shall be maintained forthe duration of the test.
i.

Thunderbolt

ii.

USB

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iii. Firewire (IEEE 1394)
iv. Other
Note: Examples of bridging for Displays may include:
1. A case where the Display converts data between two different port types (e.g.
Thunderbolt and Ethernet). This can allow a device to use Thunderbolt as an
Ethernet connection or vice versa.
2. Allowing a USB keyboard/mouse to be connected to another system (e.g. Host
Machine) through the Display by a USB hub controller.
c) Networking: If the UUT has networking capability (i.e., it has the ability to obtain an IP
address when configured and connected to a network) the networking capability shall be
activated, and the UUT shall be connected to a live physical network (e.g., Wi-Fi, Ethernet,etc.). The physical network shall support the highest and lowest data speeds of the UUT’s
network function. An active connection is defined as a live physical connection over thephysical layer of the networking protocol. In the case of Ethernet, the connection shall be via
a standard Cat 5e or better Ethernet cable to an Ethernet switch or router. In the case of WiFi the device shall be connected and tested in proximity to a wireless access point (AP). The
tester shall configure the address layer of the protocol, taking note of the following:i.

Internet Protocol (IP) v4 and IPv6 have neighbor discovery and will generally configure alimited, non-routable connection automatically.

ii.

IP can be configured manually or by using Dynamic Host Configuration Protocol (DHCP)
with an address in the 192.168.1.x Network Address Translation (NAT) address space if
the UUT does not behave normally when autoIP is used. The network shall be configured
to support the NAT address space and/or autoIP.

iii. The UUT shall maintain this live connection to the network for the duration of testing
unless otherwise specified in this Test Method, disregarding any brief lapses (e.g., whentransitioning between link speeds). If the UUT is equipped with multiple network
capabilities, only one connection shall be made in the following order of preference:a. Wi-Fi (Institution of Electrical and Electronics Engineers - IEEE 802.11- 2007 2)
b. Ethernet (IEEE 802.3). If the UUT supports Energy Efficient Ethernet (IEEE 802.3az2010 3), then it shall be connected to a device that also supports IEEE 802.3az
c.

Thunderbolt

d. USBe. Firewire (IEEE 1394)
f.

Other

d) Touchscreen Functionality: If the UUT features a touchscreen that requires a separate data
connection, this function shall be set up as directed by the manufacturer’s instructions,
including connections to the Host Machine and installation of software drivers.
e) In the case of a UUT that has a single connection capable of performing multiple functions(e.g. bridging, networking, and/or touchscreen functionality), a single connector can be used
to meet these functionalities provided it is the highest preferred connection the UUT supports

2 IEEE 802 – Telecommunications and information exchange between systems—Local and metropolitan

area networks – Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY)
Specifications
3 Part 3: Carrier Sense Multiple Access with Collision Detection (CSMA/CD) Access Method and PhysicalLayer Specifications - Amendment 5: Media Access Control Parameters, Physical Layers, andManagement Parameters for Energy-Efficient Ethernet
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for each functionality.
f)

In the case of a UUT that has no data/network capabilities, the UUT shall be tested asshipped.

g) Built-in speakers and other product features and functions not specifically addressed by the
ENERGY STAR eligibility criteria or test method must be configured in the as-shipped power
configuration.
h) Availability of other capabilities such as occupancy sensors, flash memory-card/smart-card
readers, camera interfaces, PictBridge shall be recorded.
2) Signal Interface:a) If the UUT has multiple signal interfaces, the UUT shall be tested with the first available
interface from the list below:i.

Thunderbolt

ii.

DisplayPortiii. USB-C
iv. HDMIv.

DVI

vi. VGAvii. Other Digital Interfaceviii. Other Analog Interface3) Occupancy Sensor: If the UUT has an occupancy sensor, the UUT shall be tested with theoccupancy sensor settings in the as-shipped condition. For UUT’s with an occupancy sensor
enabled as-shipped:a) A person shall be within close proximity of the occupancy sensor for the entire warm up,stabilization, luminance testing and On Mode to prevent the UUT from entering a lower powerstate (e.g. Sleep Mode or Off Mode). The UUT shall remain in On Mode for the duration of
the warm up period, stabilization period, luminance test and On Mode test.
b) No person shall be within close proximity of the occupancy sensor for the duration of the
Sleep Mode and Off Mode tests to prevent the UUT from entering a higher power state (e.g.
On Mode). The UUT shall remain in Sleep Mode or Off Mode for the duration of the Sleep
Mode or Off Mode tests, respectively.
4) Orientation: If the UUT can be rotated into vertical and horizontal orientations, it shall be tested in
the horizontal orientation, with the longest dimension being parallel to the table surface.
D) Resolution and Refresh Rate:
1) Fixed-pixel Displays:a) Pixel format shall be set to the native level as specified in the product manual.
b) For non-Cathode Ray Tube (CRT) Displays, refresh rate shall be set to 60 Hz, unless a
different default refresh rate is specified in the product manual, in which case the specified
default refresh rate shall be used.
c) For CRT Displays, pixel format shall be set to the highest resolution that is designed to be
driven at a 75 Hz refresh rate, as specified in the product manual. Typical industry standards
for pixel format timing shall be used for testing. Refresh rate shall be set to 75 Hz.
E) Accuracy of Input Signal Levels: When using analog interfaces, video inputs shall be within ± 2% ofreferenced white and black levels. When using digital interfaces, the source video signal shall not be
adjusted for color, or modified by the tester for any purpose other than to compress/inflate and

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encode/decode for transmission, as required.
F) True Power Factor: Partners shall report the true power factor (PF) of the UUT during On Modemeasurement. The power factor values shall be recorded at the same rate at which the power value(PON) are recorded. The reported power factor shall be averaged over the entire duration of the On
Mode testing.
G) Test Materials:
1) “IEC 62087:2011 Dynamic Broadcast-Content Signal” shall be used for testing, as specified in
IEC 62087:2011, Section 11.6, “On (average) mode testing using dynamic broadcast-content
video signal.”
2) “VESA FPDM2” shall be used only for products that cannot display the IEC 62087:2011 Dynamic
Broadcast-Content Signal.
H) Host Machine and Video Input Signal:
1) The Host Machine shall generate the video input signal in the native resolution of the Display
such that the active area of the video fills the entire screen. This may require the playback
software to adjust the aspect ratio of the video.
2) The frame rate of the video input signal should match the frame rate most commonly used in theregion in which the product is sold (e.g., For the US and Japan a 60 Hz frame rate is used; forEurope and Australia a 50 Hz frame rate is used).
3) The audio settings on the Host Machine shall be disabled so that no sound is produced alongside
the video input signal.
4) The Host Machine shall not have a battery and must operate on its own ac power source (e.g.
desktop computer, Blu-ray player, etc.). If a UUT must be used with a Host Machine that requires
a battery, ensure that the battery is fully charged and the Host Machine is connected to an ac
power source prior to connecting to the UUT.

6 TEST PROCEDURES FOR ALL PRODUCTS
6.1 Pre-Test UUT InitializationA) Prior to the start of testing, the UUT shall be initialized as follows:
1) Set up the UUT per the instructions in the supplied product manual.
2) Connect an acceptable watt meter to the power source and connect the UUT to the power outlet
on the watt meter.
3) With the UUT off, set the ambient light level such that the measured screen illuminance is lessthan 1.0 lux (see Section 5.2B)).
4) Power on the UUT and perform initial system configuration, as applicable.
5) Ensure UUT settings are in their as-shipped configuration, unless otherwise specified in this test
method.
6) Warm up the UUT for 20 minutes, or the time it takes the UUT to complete initialization andbecome ready for use, whichever is longer. The IEC 62087:2011 test signal format, as specified
in Section 5.2G)1), shall be displayed for the entire warm up period. Displays that cannot display
the IEC 62087:2011 test signal format shall have the VESA FPDM2 L80 test signal, as specified
in Section 5.2G)2), displayed on the screen.
7) Report the ac input voltage and frequency or dc input voltage.
8) Report the test room ambient temperature and relative humidity.

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6.2 Luminance TestingA) Luminance testing shall be performed immediately following the warm up period and in dark room
conditions. Product screen illuminance, as measured with the UUT in Off Mode, shall be less than orequal to 1.0 lux.
B) Luminance shall be measured perpendicular to the center of the product screen using a luminancemeter in accordance with the meter’s user manual.
C) The position of the luminance meter relative to the product screen shall remain fixed throughout the
duration of testing.
D) For products with ABC, luminance measurements shall be performed with ABC disabled. If ABC
cannot be disabled, luminance measurements shall be measured perpendicular to the center of the
product screen with light entering directly into the UUT’s ambient light sensor at greater than or equal
to 300 lux.
E) For Tiled Display Systems, luminance measurements shall be performed individually for each
Signage Display module in the Maximum Tiled Configuration. All luminance values reported shall becalculated as the average luminance of all modules in the Maximum Tiled Configuration. The
measured luminance shall only include light from the individual display, and not the other displays.
F) Luminance measurements shall be performed as follows:
1) Verify that the luminance of the UUT is set according to the Default Picture Setting identified in
5.1 A) 2).
2) Display the test video signal for the specific product class, as described below:a) All products, except as specified in b): Three-bar video signal specified in IEC
62087:2011, Section 11.5.5 (three bars of white (100%) over a black (0%) background).
b) Products that cannot display signals from IEC 62087:2011: VESA FPDM2 L80 test signal
for the maximum resolution supported by the product.
3) Display the test video signal for no less than 10 minutes to allow the UUT luminance to stabilize.
This 10 minute stabilization period may be reduced if luminance measurements are stable towithin 2% over a period of not less than 60 seconds.
4) Measure and record the luminance in default as-shipped setting LAs-shipped.
5) Set the brightness and contrast levels of the UUT to their maximum values.
6) Measure and record the luminance as LMax_Measured.
7) Record the manufacturer-reported maximum luminance LMax_Reported.
G) The contrast setting shall be left at the maximum level for the subsequent On Mode tests unlessotherwise specified.

6.3

On Mode Testing for Products without ABC Enabled by DefaultA) After the Luminance Testing and prior to On Mode power measurement, the luminance of the UUT
shall be set according to the following:
1) For Signage Displays (including Tiled Display Systems), the product, which includes all
modules in the Maximum Tiled Configuration for Tiled Display Systems, shall be tested withluminance set at a value greater than or equal to 65% of the manufacturer-reported maximum
luminance (LMax_Reported). Luminance values shall be measured for each module individually as per
Section 6.2. This luminance value LOn, which for Tiled Display Systems should be computed as
the average of all modules in the Maximum Tiled Configuration, shall be recorded.
2) For all other products, adjust appropriate luminance controls until the luminance of the screen is
200 candelas per square meter (cd/m2). If the UUT cannot achieve this luminance, set the
product luminance to the nearest achievable value. Luminance values shall be measured as per
Section 6.2. This luminance value LOn shall be reported. Appropriate luminance controls refer toany controls that adjust the brightness of the Display, but do not include contrast settings.

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3) The luminance, as measured per Section 6.2 but without the 10 minute stabilization period, shallmeet the requirements above at any point during the On Mode test.
B) For a UUT capable of displaying the IEC signals, On Mode power (PON) shall be measured according
to IEC 62087:2011 Section 11.6.1 “Measurements using dynamic broadcast-content video signal.”
For a UUT not capable of displaying the IEC signals, On Mode power (PON) shall be measured asfollows:
1) Ensure that the UUT has been initialized per Section 6.1.
2) Display the VESA FPDM2, A112-2F, SET01K test pattern (8 shades of gray from full black(0 volts) to full white (0.7 volts)).
3) Verify that input signal levels conform to VESA Video Signal Standard (VSIS), Version 1.0, Rev.
2.0, December 2002.
4) With the brightness and contrast controls at maximum, verify that the white and near-white grey
levels can be distinguished. If necessary, adjust contrast controls until the white and near-whitegrey levels can be distinguished.
5) Display the VESA FPDM2, A112-2H, L80 test pattern (full white (0.7 volts) box that occupies 80%of the image).
6) Ensure that the luminance measurement area falls entirely within the white portion of the test
pattern.
7) Adjust appropriate luminance controls until the luminance of the white area of the screen is set as
described in Section 6.3A).
8) Record the screen luminance (LOn).
9) Record On Mode power (PON) and total pixel format (horizontal x vertical). The On Mode power
shall be measured over a 10 minute period similar to the IEC 62087:2011 dynamic broadcastcontent test.
10) If the Host Machine draws power from the UUT then the power drawn shall be included in the On
Mode power measurement.

6.4 On Mode Testing for Products with ABC Enabled by Default
The average On Mode power consumption of the product shall be determined with the dynamic
broadcast-content as defined in IEC 62087:2011. If the product cannot display the IEC signal, then the
VESA FPDM2 L80 test pattern, as described in Section 6.3A)5), shall be used for all of the following
steps.
A) Stabilize the UUT for 30 minutes. This shall be done with three repetitions of the 10 minute IEC
dynamic broadcast-content video signal.
B) Set the light output of the lamp used for testing to 12 lux as measured at the face of the ambient lightsensor.
C) Display the 10 minute dynamic broadcast-content video signal. Measure and record the power
consumption, P12, during the 10 minute dynamic broadcast-content video signal.
D) Repeat steps 6.4B) and 6.4C) for an ambient light level of 300 lux, to measure P300.
E) Disable ABC and measure On Mode power (PON) per Section 6.3. If ABC cannot be disabled, power
measurements shall be conducted as follows:
1) If the brightness can be set to a fixed value as specified in Section 6.3, then On Mode power forthese products shall be measured as per Section 6.3 with light entering directly into the UUT’s
ambient light sensor at greater than or equal to 300 lux.
2) If the brightness cannot be set to a fixed value, then On Mode power for these products shall bemeasured as per Section 6.3 with light entering directly into the UUT’s ambient light sensor at
greater than or equal to 300 lux and without modifying the screen brightness.

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6.5 Sleep Mode TestingA) Sleep Mode power (PSLEEP) shall be measured according to IEC 62301:2011, with the additional
guidance in Section 5.
B) The Sleep Mode test shall be conducted with the UUT connected to the Host Machine in the samemanner as in the On Mode test. If possible, Sleep Mode shall be enacted by putting the Host Machine
to sleep. For a computer Host Machine, Sleep Mode is defined in the Version 7.1 ENERGY STAR
Computers specification.
C) If the product has a variety of Sleep Modes that may be manually selected, or if the product can enter
Sleep Mode via different methods (e.g., remote control or putting the Host Machine to sleep),measurements shall be performed and recorded in all Sleep Modes.
If the product automatically transitions through its various Sleep Modes, the measurement time shallbe long enough to obtain an average of all Sleep Modes. The measurement shall still meetrequirements (e.g., stability, measurement period, etc.) outlined in Section 5.3 of IEC 62301:2011.

6.6 Off Mode TestingA) For products having Off Mode capability, at the conclusion of the Sleep Mode test, initiate Off Modevia the most easily accessible power switch.
B) Measure Off Mode power (POFF) according to Section 5.3.1 of the IEC 62301:2011. Document themethod of adjustment and sequence of events required to reach Off Mode.
C) Any input synchronizing signal check cycle may be ignored when measuring Off Mode power.

6.7 Luminance Testing for Products Claiming HDR CapabilityA) Products claiming HDR capability shall be tested according to the VESA High-performance Monitor
and Display Compliance Test Specification (DisplayHDR CTS) Version 1.0, Section 5.1: Minimumwhite Luminance Level Specifications. The maximum DisplayHDR performance tier for which the
UUT meets all three Minimum-white Luminance requirements shall be reported. Products previously
certified to VESA DisplayHDR standards may be exempted from testing, in which case the certified
DisplayHDR performance tier shall be reported.

6.8

Additional TestingA) For products with data/networking capabilities or a bridge connection, in addition to tests performed
with data/networking capabilities activated and a bridge connection established (see Section 5.2C)1)),
Sleep Mode Testing shall be performed with data/networking features deactivated and without any
bridge connection established.
B) The presence of Full Network Connectivity shall be determined by testing the Display for network
activity in Sleep Mode according to section 6.6.5.2 (Standby-active, Low) of CTA-2037-A,
Determination of Television Set Power Consumption, with the following guidance:
1) The Display shall be connected to a network per Section 5.2C)1)c) prior to the test.
2) The Display shall be placed into Sleep Mode in place of standby-active, low mode.

ENERGY STAR Program Requirements for Displays – Test Method (Rev. Feb-2020)

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