1

Round Robin Test Program 

Final Report for: Televisions 

Revised October 2011

   
2

Contents

Introduction ..................................................................................................................................................3

Test Procedure..............................................................................................................................................3

Test Labs and Products Tested ..................................................................................................................... 3

Statistical Analysis Methods ......................................................................................................................... 4

Summary of Results ......................................................................................................................................5

On Mode Power........................................................................................................................................5

Sleep Mode Power....................................................................................................................................8

Luminance Ratio .....................................................................................................................................11

References ..................................................................................................................................................14

Appendix A: Example Calculations.............................................................................................................. 15

Appendix B:  Detailed Test Results ............................................................................................................. 17
3

Introduction

The National Energy Technology Laboratory (NETL) and the Department of Energy (DOE) initiated a

television round robin test study to assess the repeatability and reproducibility of television energy test

results. Repeatability refers to the variability among test results for a single appliance obtained within a

single laboratory. Reproducibility refers to the variability among test results for a single appliance

obtained at different laboratories.   

Test Procedure

Round robin testing was conducted using ENERGY STAR Program Requirements for Televisions, Versions

4.1 and 5.1 (1). The key metrics are:  

 On Mode Power [W]  

 Sleep Mode Power [W]  

 Luminance Ratio [%]  

 Download Acquisition Mode (DAM) Power[W]

DAM testing was not conducted as part of this study due to (a) participating laboratories were not

equipped for DAM tests, and (b) lack of the DAM feature on the test televisions.   

Test Labs and Products Tested

Three laboratories participated in the television round robin test study. The test labs are identified as

Lab A, Lab B and Lab C.    Each participating lab performed On Mode Power, Sleep Mode Power, and

Luminance Ratio tests three times each on two different televisions. Table 1 presents the quantity of

tests conducted at each participating lab.   

Table 1: Test Plan

Sample Lab ID On Mode Power Sleep Mode Power Luminance Ratio

1

A 3 3 3

B 3 3 3

C 3 3 3

2

A 3 3 3

B 3 3 3

C 3 3 3

Total Tests 18 18 18

The two televisions selected for testing are designated as Sample 1 and Sample 2.    Table 2 lists the

characteristics of Sample 1 and Sample 2.
4

Table 2: Test Units

Test Unit Display

Technology

Screen Size

Class (in)

ENERGY STAR

Certified

Automatic Brightness

Controla

Sample 1 LCD HDTV 22 No No

Sample 2 LED‐LCD HDTV1 40 Yes Yes

a)    Automatic Brightness Control (ABC) is an energy saving feature that enables a television to sense    the

environmental ambient lighting conditions and automatically adjust display brightness accordingly. ENERGY STAR

Program Requirements for Televisions, Versions 4.1 and 5.1, requires that televisions with ABC enabled by factory‐

default be tested at zero lux ambient lighting conditions and 300 or greater lux ambient lighting conditions during

On Mode testing.

Statistical Analysis Methods

To aid in the statistical analysis of the round robin test study results, the following standards were

referenced:

 ASTM E 691‐99: Standard Practice for Conducting an Inter‐Laboratory Study to Determine the

Precision of a Test Method (2); and

 ISO/PDTR 22971 Practical guide to ISO 5725‐2:1994 – Accuracy (trueness and precision) of

measurement methods and results – Part 2: Basic method for the determination of repeatability

and reproducibility of a standard measurement method (3).  

These standards use repeatability limits (r) and reproducibility limits (R) to assess the repeatability and

reproducibility of test results.   

The repeatability and reproducibility limits ”represent the absolute difference between two single

results obtained under repeatability and reproducibility conditions respectively, that will not be

exceeded more than 95% of the time” (3).  In other words, if the results are repeatable, then 95% of the

time the absolute value of the difference between two test results obtained at a single lab for a single

sample will be less than the repeatability limit. Similarly, if the results are reproducible, then 95% of the

time the absolute value of the difference between two test results obtained at multiple labs for a single

sample will be less than the calculated reproducibility limit. The limits “should be used as guides to

assess the validity or relevance of results produced by the measurement method and not as rigid

numerical criteria to discard or validate results” (3).  Repeatability and reproducibility limits are derived

from estimations of the repeatability and reproducibility standard deviations.    Appendix A includes

example calculations of repeatability and reproducibility standard deviations, as well as repeatability

and reproducibility limits.

If the range of test results within each lab (lab range) is less than the repeatability limit, then the test

results are considered to be statistically repeatable2. If the range of test results between labs (full range)

                                                           

1 LED‐LCD HDTV refers to a high definition television that utilizes a liquid‐crystal display and is lit by light emitting

diode technology.  
5

is less than the reproducibility limit, then the test results are considered to be statistically reproducible.  

Although ASTM E 691‐99 recommends that test results from no fewer than six laboratories be used to

generate a final statement of precision of a test method, only three labs participated in this study.

In addition to the statistical analyses on repeatability and reproducibility, the Summary of Results

section compares the results obtained at each lab (Lab Mean) to the average results from all the labs

(Grand Mean).

Summary of Results

Table 3 compares the average of each lab’s test results (Lab Mean) to the average of all the test results

(Grand Mean) for Samples 1 and 2, respectively. Detailed results and analysis are presented for On

Mode Power, Sleep Mode Power, and Luminance Ratio in Appendix B. Note that Sample 1 has a

Luminance Ratio of 100% because its ‘Home Mode/default’ setting and ‘Retail Mode/brightest’ setting

are identical; therefore, Sample 1 Luminance Ratio will be the same at each Lab.

Table 3: Lab Mean Percent Difference from Grand Mean  

Sample Lab ID

On Mode Power [W]    Sleep Mode Powerb [W] Luminance Ratio [%]

Percent

Difference

Grand

Mean

Percent

Difference

Grand

Mean

Percent

Difference

Grand

Mean

1

A 0.8%

41.9

3.3%

0.63

0.0%

B ‐0.2% 0.7% 0.0% 100%

C ‐0.6% ‐4.0% 0.0%

2

A 0.5%

88.1

12.5%

0.06

2.2%

B ‐0.3% ‐3.6% ‐1.1% 70%

C ‐0.2%  ‐8.9% ‐1.1%

b)     The percent difference in sleep mode power is not representative of the true variability in test results. The

average sleep mode power for each lab was within 0.05 Watts of the grand mean for Sample 1 and within 0.01

Watts for Sample 2.

On Mode Power

Figures 1 and 2 present plots of the On Mode Power results from all three labs for each sample TV. Lab A

experienced greater variability between individual measurements while testing Sample 1, as shown in

Figure 1. Lab B experienced greater variability while testing Sample 2, as shown in Figure 2. Although the  

second test result for Sample 2 tested by Lab B appears to be significantly greater than the other results,

the scale of the y‐axis has been expanded in Figure 2; therefore, this test result is about 1% different

from the others.   Although the results from Lab A are greater than the other labs for both samples, Lab

A’s test data do not offer an explanation for this difference.  

                                                                                                                                                                                               

2 The phrases ‘statistically reproducible’ and ‘statistically repeatable’ are used throughout this paper.    They

indicate that 95% of the time the absolute difference between two single test results will not exceed a calculated

reproducibility limit, or repeatability limit.   
6

Figure 1: On Mode Power for Sample 1  

Figure 2: On Mode Power for Sample 2

Figure 3 illustrates On Mode Power repeatability. The lab ranges are shown as vertical bars and the

repeatability limits are shown as horizontal lines. Because the lab range for Lab A exceeds the

repeatability limit for Sample 1 and the lab range for Lab B exceeds the repeatability limit of Sample 2,

the test results for On Mode Power are not statistically repeatable at either of these labs for these

41.0

41.2

41.4

41.6

41.8

42.0

42.2

42.4

TEST 1 TEST 2 TEST 3

On Mode Power [W]

Sample 1 ‐ On Mode Power

Lab A

Lab B

Lab C

86.8

87.0

87.2

87.4

87.6

87.8

88.0

88.2

88.4

88.6

88.8

TEST 1 TEST 2 TEST 3

On Mode Power [W]

Sample 2 ‐ On Mode Power

Lab A

Lab B

Lab C
7

respective samples. This means that for Lab A, the absolute difference between two On Mode Power

tests on Sample 1 will exceed the calculated repeatability limit of 0.4 W (0.85% of the average On Mode

Power measurement) more than 5% of the time. Similarly, the absolute difference between two On

Mode Power tests at Lab B on Sample 2 will exceed the calculated repeatability limit of 0.9 W more than

5% of the time.

Figure 3: On Mode Power lab ranges (vertical bars) and calculated repeatability limits (horizontal lines) for all samples

Reproducibility limits are shown as horizontal lines in Figure 4. The vertical bars represent the full range

of results for each unit. Because the full range for both Sample 1 and Sample 2 is below the

reproducibility limits, On Mode Power test results for both televisions are statistically reproducible at all

participating laboratories.  

0.0

0.2

0.4

0.6

0.8

1.0

1.2

Lab A Lab B Lab C Lab A Lab B Lab C

Sample 1 Sample 2

Within Lab Range [W]

On Mode Repeatability
8

Figure 4: On Mode Power reproducibility limits for all samples

Sleep Mode Power

Figures 5 and 6 present Sleep Mode Power results from all three labs for each sample TV. As shown in

Figure 5, the first test result for Lab A on Sample 1 is significantly greater than the other results obtained

for Sample 1. During each Sleep Mode test, Lab A used a different approach to measure Standby Power

than Labs B and C; however, there are not sufficient data to understand if the different approach

contributed to the difference in results.  

The ENERGY STAR Program Requirements for Televisions, Versions 4.1 and 5.1, references IEC Standard

62301 Ed. 2.0 (4), which specifies several different permissible methods for the measurement of standby

(Sleep Mode) energy consumption. Because IEC Standard 62301 Ed. 2.0 was under review during the

round robin test study, participating laboratories referenced IEC Standard 62301 Ed. 1.0 (5) which also

specifies several permissible methods for the measurement of standby (Sleep Mode) energy

consumption.    Lab B and Lab C used the average power approach, during which labs “record a true

average power over a user selected period (not less than 5 minutes).” Lab A used a different approach

and recorded the Standby Mode Power directly from the power meter after 5 minutes of stable sleep

mode power consumption. The test procedure states, “If the power level does not drift by more than 5%

(from the maximum value observed) during the latter 5 minutes, the load can be considered stable and

the power can be recorded directly from the instrument at the end of the 5 minutes.”  Both methods of

power measurement for Sleep Mode are in accordance with the requirements of the round robin test

study.  It is preferred, however, for the laboratory to report the average power consumption during a

specified duration because it uses numerous data points, as opposed to one data point from a direct

measurement.  As noted above, there are not sufficient data to understand if the standby measurement

approach impacts the test results.

0.0

0.2

0.4

0.6

0.8

1.0

1.2

1.4

Sample 1 Sample 2

Between Lab Range [W]

On Mode Reproducibility
9

Figure 5: Sleep Mode Power for Sample 1  

Figure 6: Sleep Mode Power for Sample 2

The repeatability limits for Sleep Mode Power are shown as the horizontal lines in Figures 7; the lab

ranges are shown as the vertical bars. Because the lab range for Lab A exceeds the repeatability limit for

Sample 1 and the lab range for Lab C exceeds the repeatability limit for Sample 2, the test results for

0.54

0.56

0.58

0.60

0.62

0.64

0.66

0.68

0.70

TEST 1 TEST 2 TEST 3

Sleep Mode Power [W]

Sample 1 ‐ Sleep Mode Power

Lab A

Lab B

Lab C

0.00

0.01

0.02

0.03

0.04

0.05

0.06

0.07

0.08

TEST 1 TEST 2 TEST 3

Sleep Mode Power [W]

Sample 2 ‐ Sleep Mode Power

Lab A

Lab B

Lab C
10

Sleep Mode Power are not statistically repeatable at either of these labs, for these respective samples.

This means that for Lab A, the absolute difference between two Sleep Mode Power tests on Sample 1

will exceed the calculated repeatability limit of 0.06 W more than 5% of the time. Similarly, the absolute

difference between two Sleep Mode Power tests at Lab C on Sample 2 will exceed the calculated

repeatability limit of 0.01 W more than 5% of the time.

Figure 7: Sleep Mode Power lab ranges (vertical bars) and calculated repeatability limits (horizontal lines) for all samples

The reproducibility limits are shown as the horizontal line in Figure 8. The vertical bars are the full

ranges of results for each unit. Because the full range for Sample 1 is above the reproducibility limit,

Sleep Mode Power test results for Sample 1 are not statistically reproducible. Sleep Mode Power test

results for Sample 2 are statistically reproducible at all participating laboratories, as shown in Figure 8.

The variation in Lab A’s results for Sample 1 (see Figure 5) may have impacted the reproducibility results

for Sample 1. If Test 1 for Lab A on Sample 1 were more in line with the other results for Lab A,

specifically if it were 0.66 W or less, then the results of Sample 1 would be statistically reproducible.   

0.00

0.01

0.02

0.03

0.04

0.05

0.06

0.07

Lab A Lab B Lab C Lab A Lab B Lab C

Sample 1 Sample 2

Within Lab Range [W]

Sleep Mode Repeatability
11

Figure 8: Sleep Mode Power reproducibility limits for all samples

Luminance Ratio

Figures 9 and 10 present plots of Luminance Ratio results from the three labs for each sample TV.  As

previously noted, Sample 1 has a Luminance Ratio of 100% since its ‘Home Mode/default’ setting and

‘Retail Mode/brightest’ setting are identical.  Therefore, each lab recorded a luminance ratio of 100% for

Sample 1 and there was no variation. For Sample 2, Lab B and Lab C had greater variability in luminance

ratio results, as shown in Figure 9.  

The Energy Star test procedure does not specify what type of luminance meter should be used to

conduct the Luminance Ratio tests. As a result, each participating lab took a slightly different approach

to measuring Luminance Ratio. Lab C utilized a contact luminance meter, while Lab A and Lab B used a

distance meter to measure Luminance Ratio. Furthermore, the labs that used a distance meter recorded

measurements at different distances from the television. Lab A recorded Luminance Ratio

measurements at a distance recommended by the meter’s manufacturer, while Lab B recorded

Luminance Ratio measurements at a distance 2.5 times the height of the display, as recommended by

Video Electronics Standards Association (VESA). Despite using different methods to measure Luminance

Ratio, the results of Lab C and Lab B are similar. For Sample 2, they are within an absolute range of 1%.

The results for all labs on Sample 2 were within 3%. As noted above, the results for Sample 1 are

identical because of the characteristics of Sample 1. Based on the data available from these tests, the

type of luminance meter (contact versus distance) does not appear to have a strong effect on luminance

ratio test results.  

0.00

0.01

0.02

0.03

0.04

0.05

0.06

0.07

0.08

0.09

0.10

Sample 1 Sample 2

Between Lab Range [W]

Sleep Mode Reproducibility
12

Figure 9: Luminance Ratio for Sample 2

The repeatability limits for Luminance Ratio are shown as the horizontal lines in Figure 10. The lab

ranges are shown as the vertical bars in Figure 10. For Sample 1, the lab ranges are zero for all labs

because there was no variation in the test results at any of the labs. Similarly, the lab range for Lab A on

Sample 2 is zero because Lab A measured exactly the same value (72%) in all three tests. Because the lab

ranges for all the labs are below the repeatability limits for both units, the test results for Luminance

Ratio are statistically repeatable at all the labs and for both samples.  

67%

68%

69%

70%

71%

72%

73%

TEST 1 TEST 2 TEST 3

Luminance Ratio [%]

Sample 2 ‐ Luminance Ratio

Lab A

Lab B

Lab C
13

Figure 10: Luminance Ratio lab ranges (vertical bars) and calculated repeatability limits (horizontal lines) for all samples

The reproducibility limits are shown as the horizontal line in Figure 11. The vertical bars are the full

range of results for each unit. The full range for Sample 1 is zero because all the labs recorded the same

value for every test. The reproducibility limit for Sample 1 is also zero for the same reason. The full range

for Sample 2 is the same for Lab B and Lab C, as shown in Figure 10. Because the full range for both

samples does not exceed the reproducibility limits, Luminance Ratio test results for both samples are

statistically reproducible at all participating laboratories, as shown in Figure 11.   

0.0%

0.2%

0.4%

0.6%

0.8%

1.0%

1.2%

Lab A Lab B Lab C Lab A Lab B Lab C

Sample 1 Sample 2

Within Lab Range [%]

Luminance Ratio Repeatability
14

Figure 11: Luminance Ratio reproducibility limits for all samples

References

1) ENERGY STAR.  ENERGY STAR Program Requirements for Televisions, Versions 4.1 and 5.1.

2) ASTM.  ASTM E 691‐99 Standard Practice for Conducting an Inter‐laboratory Study to Determine

the Precision of a Test Method. American Society for Testing and Materials, West

Conshohocken, PA, 1999.

3) ISO.  ISO/PDTR 22971 Practical guide to ISO 5725‐2:1994 – Accuracy (trueness and precision) of

measurement methods and results – Part 2: Basic method for the determination of repeatability

and reproducibility of a standard measurement method.  International Standards Organization,

Geneva, Switzerland, 2001.

4) IEC. IEC 62301 Ed 2.0: Household Electrical Appliances – Measurement of Standby Power.

International Electrotechnical Commission, Geneva, Switzerland, 2011.

5) IEC. IEC 62301 Ed 1.0: Household Electrical Appliances – Measurement of Standby Power.

International Electrotechnical Commission, Geneva, Switzerland, 2005.

   

0.0%

0.5%

1.0%

1.5%

2.0%

2.5%

3.0%

3.5%

4.0%

4.5%

Sample 1 Sample 2

Between Lab Range [%]

Luminance Ratio Reproducibility
15

Appendix A: Example Calculations

The following variables and equations were used to calculate the values summarized in the report and

detailed results included in Appendix B. The sample calculations use the values in Table 4 as inputs for

clarity. Because the values in Table 4 are already rounded, the arithmetic in some of the equations may

appear incorrect.

Table 4: On Mode – Sample 2 [Watts]

% d ഥࢄ s   ഥ࢞ ૜࢞    ૛࢞ ૚࢞

difference Range_lab Range_full

Lab A 88.4 88.7 88.6 88.6 0.2

88.1

0.5 0.5% 0.3

Lab B 87.5 88.5 87.6 87.9 0.6  ‐0.2  ‐0.3% 1.0 1.2

Lab C 87.9 87.9 87.9 87.9 0.0  ‐0.2 ‐0.2% 0.0

sx sr sR r R

0.4 0.3 0.5 0.9 1.3

where,

3 ൌ ݕݎ݋ݐܽݎ݋ ݈ܾܽݎ݁݌ ݏݐ݈ݑݏ݁ݎ ݐݏ݁ݐ݂ ݋ ݎܾ݉݁ݑ݊ ൌ ݊

3 ൌ ݏ݅݁ݎ݋ݐܽݎ݋݅݊݃ ݈ܾܽݐܽ݌݅ܿ݅ݐݎܽ݌݂ ݋ ݎܾ݉݁ݑ݊ ൌ ݌

ݐ݈ݑݏ݁ݎ ݐݏ݁ݐ݈ܽ ݑ݅݀ݒ݅݊݀݅ ൌ ݔ

௜ݔ෍  ൌ ሻܤܾܽ ܮ݂ ݋ሺ݁ܽ݊ ܯܾܽ ܮ ҧൌݔ

݊

௡

௜ୀଵ

ൌ 87.5 ൅ 88.5 ൅ 87.6

3 ൌ 87.9

ܺത ൌ ݎܩܽ݊݀ ܯ݁ܽ݊ ൌ  ෍ݔҧ௜

݌

௣

௜ୀଵ

ൌ 88.6 ൅ 87.9 ൅ 87.9

3 ൌ 88.1

  ൌ ሻܤܾܽ ܮ݂ ݋ሺ݁݊ܿ݁ ݎ݂݂݅݁ܦ ݐܿ݁݊ݎܲ݁

ݔҧെ ܺത

ܺത ൌ  87.9 െ 88.1

88.1 ൌ െ0.3%

ҧሻଶݔ െ௜ ݔሺ෍ඩ ൌ ሻܤܾܽ ܮ݂ ݋ሺ݊ ݋݅ݐ݅ܽݒ݀ ݀݁ݎܽ݊݀ܽݐݏܾܽ ܮ ൌ ݏ

݊െ1

௡

௜ୀଵ

     

ൌ ඨሺ87.5 െ 87.9ሻଶ ൅ ሺ88.5 െ 87.9ሻଶ ൅ ሺ87.6 െ 87.9ሻଶ

3െ1 ൌ 0.6
16

݀ ൌ ܦ݁ݒ݅ܽݐ݅݋݊ ሺ݋݂ ܮܾܽ ܤሻ ൌ ݔҧെ ܺത ൌ 87.9 െ 88.1 ൌ െ0.2

௜݀ ෍ඩ ൌ ݊݋݅ݐ݅ܽݒ݀ ݀݁ݎܽ݊݀ܽݐݏ݁ܽ݊ ܯܾܽ ܮ ௫ҧൌݏ

ଶ

1െ݌

௣

௜ୀଵ

ൌ ඨ0.5ଶ  ൅ ሺെ0.2ሻଶ ൅ ሺെ0.2ሻଶ

3െ1 ൌ 0.4

௜ݏ෍ඩ ൌ ݊݋݅ݐ݅ܽݒ݀ ݀݁ݎܽ݊݀ܽݐݏ ݕݐܾ݈ܽ݅݅ݐ݁ܽ݌݁ݎ ൌ௥ ݏ

ଶ

݌

௣

௜ୀଵ

ൌ ඨ0.2ଶ ൅ 0. 6ଶ ൅ 0.0ଶ

3 ൌ 0.3

௫ҧݏඨ ݎ݋0.3  ൌ௥ ݏ݂ ݋ ݎ݁ݐ݁ܽݎ݃ ൌ ݊݋݅ݐ݅ܽݒ݀ ݀݁ݎܽ݊݀ܽݐݏ ݕݐܾ݈ܿ݅݅݅ݑ݀݋ݎ݌݁ݎ ൌ ோݏ௥ݏ ൅ ଶ

כ ଶ

݊െ1

݊               

ൌ ඨ0.4ଶ ൅ 0.3ଶ כ

3െ1

3 ൌ 0.5

0.9 ൌ 0.3 כ 2.8 ൌ௥ ݏ כ 2.8 ൌ ݐ ݈݅݉݅ݕݐܾ݈ܽ݅݅ݐ݁ܽ݌݁ݎ ൌ ݎ

1.3 ൌ 0.5 כ 2.8 ൌ ோݏ כ 2.8 ൌ ݐ ݈݅݉݅ݕݐܾ݈ܿ݅݅݅ݑ݀݋ݎ݌݁ݎ ൌ ܴ

ܮ ஻ൌ ܮܾܽ ܴܽ݊݃݁ ݅݊ ܮܾܽ ܤ ൌ max ሺnሻLୟୠ B െ minሺnሻLୟୠ B ൌ 88.5 െ 87.5 ൌ 1.0

ܮி௨௟௟ ൌ ݑܨ݈݈ ܴܽ݊݃݁  ൌ maxሺ݊ሻ െ minሺ݊ሻ ൌ 88.7 െ 87.5 ൌ 1.2
17

Appendix B:  Detailed Test Results

Table 5: On Mode – Sample 1 [Watts]

  

% d ഥࢄ s   ഥ࢞ ૜࢞    ૛࢞ ૚࢞

difference Range_lab Range_full

Lab A 42.3 42.3 42.0 42.2 0.2

41.9

0.3 0.8% 0.3

Lab B 41.7 41.8 41.8 41.8 0.1  ‐0.1  ‐0.2% 0.1 0.8

Lab C 41.5 41.7 41.6 41.6 0.1 ‐0.3  ‐0.6% 0.2

sx sr sR r R

0.3   0.1   0.3   0.4   0.9

Table 6: On Mode – Sample 2 [Watts]

% d ഥࢄ s   ഥ࢞ ૜࢞    ૛࢞ ૚࢞

difference Range_lab Range_full

Lab A 88.4 88.7 88.6 88.6 0.2

88.1

0.5 0.5% 0.3

Lab B 87.5 88.5 87.6 87.9 0.6 ‐0.2  ‐0.3% 1.0 1.2

Lab C 87.9 87.9 87.9 87.9 0.0  ‐0.2  ‐0.2% 0.0

sx sr sR r R

0.4 0.3 0.5 0.9 1.3

Table 7: Sleep Mode – Sample 1 [Watts]

% d ഥࢄ s   ഥ࢞ ૜࢞    ૛࢞ ૚࢞

difference Range_lab Range_full

Lab A 0.69 0.64 0.63 0.65 0.03

0.63

0.02 3.3% 0.06

Lab B 0.64 0.63 0.64 0.64 0.01 0.00 0.7% 0.01 0.09

Lab C 0.62 0.60 0.60 0.61 0.00  ‐0.03 ‐4.0% 0.02

sx sr sR r R

0.02 0.02 0.03 0.06 0.08
18

Table 8: Sleep Mode – Sample 2 [Watts]

% d ഥࢄ s ഥ࢞ ૜࢞  ૛࢞ ૚࢞

difference Range_lab Range_full

Lab A 0.07 0.07 0.07 0.07 0.00

0.06

0.01 12.5% 0.00

Lab B 0.06 0.06 0.06 0.06 0.00 0.00  ‐3.6% 0.00 0.02

Lab C 0.05 0.06 0.06 0.06 0.01  ‐0.01  ‐8.9% 0.01

sx sr sR r R

0.01 0.00 0.01 0.01 0.02

Table 9: Luminance Ratio – Sample 1 [%]

% d ഥࢄ s   ഥ࢞ ૜࢞    ૛࢞ ૚࢞

difference Range_lab Range_full

Lab A 100% 100% 100% 100% 0%

100%

0% 0.0% 0%

Lab B 100% 100% 100% 100% 0% 0% 0.0% 0% 0%

Lab C 100% 100% 100% 100% 0% 0% 0.0% 0%

sx sr sR r R

0% 0% 0% 0% 0%

Table 10: Luminance Ratio – Sample 2 [%]

% d ഥࢄ s   ഥ࢞ ૜࢞    ૛࢞ ૚࢞

difference Range_lab Range_full

Lab A 72% 72% 72% 72% 0%

70%

2% 2.2% 0%

Lab B 69% 70% 70% 70% 1% ‐1%  ‐1.1% 1% 3%

Lab C 70% 70% 69% 70% 1%  ‐1%  ‐1.1% 1%

sx sr sR r R

1% 0% 1% 1% 4%