Iec 61988-2-2-2003.Pdf

NORME INTERNATIONALE CEI IEC INTERNATIONAL STANDARD 61988 2 2 Première édition First edition 2003 02 Panneaux d''''affichage à plasma – Partie 2 2 Méthodes de mesure – Méthodes opto électriques Plasma di[.]

Conditions d'environnement

Measurements should be taken in the standard measurement position (refer to Figure 1) after an adequate preheating duration under normal environmental conditions: a temperature of 25 °C ± 3 °C, relative humidity between 25% and 85%, and pressure ranging from 86 kPa to 106 kPa Any deviations from these environmental conditions must be documented in the report.

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PLASMA DISPLAY PANELS – Part 2-2: Measuring methods – Optoelectrical

IEC 61988 outlines measurement methods for evaluating the performance of color plasma display modules, specifically focusing on bright-room contrast ratio, power and current consumption, and luminous efficacy.

The following referenced documents are indispensable for the application of this document.

For dated references, only the edition cited applies For undated references, the latest edition of the referenced document (including any amendments) applies.

IEC 61988-1:, Plasma display panels – Part 1: Terminology and letter symbols 4

IEC 60068-1, Environmental testing – Part 1: General and guidance

IEC 60107-1, Methods of measurement on receivers for television broadcast transmissions –

Part 1: General considerations – Measurement at radio and video frequencies

For the purposes of this document, the terms and definitions given in IEC 61988-1,

The system diagrams and/or driving conditions of the measuring equipment shall comply with the structure specified in each item.

Measurements shall be carried out at the standard measuring position (refer to Figure 1) after sufficient warm-up time under the standard environmental conditions, e.g at a temperature of

25 °C ± 3 °C, a relative humidity of 25 % to 85 %, and pressure of 86 kPa to 106 kPa When different environmental conditions are used, these shall be noted on the report.

Conditions d’éclairage

5.2.1 Mise en œuvre en environnement sombre

L’éclairement en tout point de l’écran d’affichage couleur à plasma doit être inférieur à 1 lx.

When the lighting significantly affects the measurement of black level, the method of background light subtraction should be employed If background light subtraction or a different lighting condition is used, it is essential to adjust it accordingly in the report.

5.2.2 Mise en œuvre en environnement sous éclairage

La lampe doit être réglée de manière que les conditions d’éclairement des plans vertical et horizontal soient satisfaites au centre du panneau qui est disposé verticalement.

The lighting accuracy must be within ±5%, and the measured illumination should be clearly documented for each specification If a different illumination level is utilized, it must be included in the report Ambient lighting on the panel is essential.

Eclairement du plan vertical: 100 lx

Eclairement du plan horizontal: 70 lx b) Source d’éclairement

A straight white fluorescent tube lamp (JIS Z 9112-1990 type N-EDL) with daylight color rendering should be used If adequate lighting cannot be achieved with a single lamp, the use of multiple lamps is permitted Additionally, adjustable luminance lamps are acceptable.

Fluorescent lamps should be utilized within the recommended operating conditions, specifically after 100 hours of aging but before reaching 2,000 hours of use Additionally, the placement of the light source and the display panel is crucial for optimal performance.

The panel must be installed in a vertical plane, with the main axis of the lamps positioned horizontally relative to the floor and parallel to the panel's surface The center of the lamps should be aligned in a vertical plane that is perpendicular to the panel at its center Additionally, proper adjustment of the illumination is essential.

Proper lighting should be achieved by adjusting the power of the light source, repositioning the lamps, or relocating the display panel to ensure adequate illumination for both vertical and horizontal planes When measuring illumination, the display should be removed from the measurement position to prevent light reflection from the screen.

Walls should be covered with dark curtains or have no windows, and they must be gray with a reflectivity not exceeding 60% The flooring should also be gray, with a reflectivity that does not exceed 20%.

When measuring illumination, it is essential to consider the color and placement of the measuring device, including the walls, floor, ceiling, and individuals conducting the measurements, to ensure that reflected light does not influence the measured illumination Once the light source is activated, the illumination should be adjusted once it reaches a sufficient level of stability An example of a measurement room is illustrated in Figure 2.

Illuminance at any location all over the screen of the colour plasma display shall be less than

When illuminance reaches 1 lx and notably impacts the measurement of the black level, the background subtraction method should be employed Any variations in illuminance or the use of the background subtraction method must be clearly documented in the report.

The lamp shall be adjusted so that the vertical- and horizontal-plane illuminance conditions are satisfied at the centre of the panel, which has been arranged vertically.

The illuminance precision must be maintained at ±5%, with the measured illuminance clearly indicated in each specification Any variations in illuminance used should be documented in the report, particularly regarding the illuminance on the panel.

Horizontal-plane illuminance: 70 lx b) Illumination source

For optimal lighting, a daylight white fluorescent lamp (JIS Z 9112-1990 type N-EDL) is recommended If a single lamp does not provide adequate illuminance, multiple lamps can be utilized Additionally, adjustable luminance lamps are allowed for enhanced flexibility in lighting conditions.

Fluorescent lamps should be utilized within the specified operational conditions, specifically after 100 hours of aging and prior to reaching 2,000 hours of usage Additionally, the positioning of the illumination source in relation to the display panel is crucial for optimal performance.

The panel must be installed vertically, with the long axes of the lamps positioned horizontally to the floor and parallel to the panel's surface The centers of the lamps should align within a vertical plane that is perpendicular to the panel face and intersects its center.

To ensure optimal visibility, the illumination must be adjusted by modifying the output of the light source, repositioning the lamps, or relocating the display panel to meet the required vertical and horizontal illuminance levels During illuminance measurements, it is essential to move the display away from the measurement position to prevent light reflections from affecting the results.

The walls will feature dark curtains or be windowless and grey, ensuring a reflectivity of no more than 60% Additionally, the floor will be grey with a reflectivity capped at 20%.

Conditions de mise en œuvre

Normal installation conditions are outlined below Each condition must be recorded on every specification form whenever a measurement is taken under conditions that differ from the standard measurement conditions.

5.3.1 Réglage des modules d'affichage couleur à plasma

Pour les modules d'affichage couleur à plasma dont le contraste est réglable, régler celui-ci à la valeur maximale dans des conditions d'environnement de mesure normales.

5.3.2 Préchauffage des modules d'affichage couleur à plasma

Measurements should begin after preheating when the plasma color display module stabilizes The preheating duration must not exceed 30 minutes, with the input signal set to 15% of the gray level across the entire screen without gamma correction.

Measurements should begin after the specified preheating period, once the plasma color display module has stabilized, unless alternative measurement methods are employed Any deviations from the preheating conditions must be reported.

To implement the measurement equipment, the optical axis of the photometer must be aligned perpendicularly to the measurement area of the plasma color display screen The normal measurement distance, denoted as ℓ X0, is equal to 2.5 times V, where V represents the smaller dimension of the screen, typically its height The measurement distance should be maintained between 1.6 times V and 2.8 times V.

The photometer should be set to an appropriate opening angle of 2° or less and must measure an area of at least 500 pixels, covering no more than 10% of the screen height This measurement area corresponds to a circular measurement zone with a minimum size.

A display panel with a diameter of 26 lines features a square pixel made up of three sub-pixels If achieving the specified angle of view is challenging, adjustments can be made to the measurement distance and angle to achieve a measurement field exceeding 500 pixels, while maintaining a range of less than 10% of the screen height Any deviations from standard conditions should be documented in the report.

ℓ X0 distance normale de mesure = 2,5 V ó V est la petite dimension de l’écran (en général la hauteur).

Figure 1 – Système de mesure et installation

Standard set-up conditions must be documented on each specification form whenever measurements are taken under conditions that differ from these standards.

5.3.1 Adjustment of colour plasma display modules

For contrast adjustable colour plasma display modules, adjust the contrast to the maximum value under the standard measuring environmental conditions.

5.3.2 Warm-up condition of colour plasma display modules

Measurements should commence after a warm-up period of over 30 minutes, ensuring the color plasma display module reaches stability During this time, the signal input must be set to a 15% grey level on a full screen without gamma correction If alternative measuring methods are employed, they should be clearly documented in the report.

To ensure accurate measurements of a color plasma display module, the light measuring device must be positioned perpendicular to the screen The standard measuring distance, denoted as ℓ X0, should be set at 2.5 times the screen height (V), with acceptable distances ranging from 1.6V to 2.8V, and this distance must be documented in the report Additionally, the device should have an aperture angle of 2° or less and must measure an area of at least 500 pixels, which should not exceed 10% of the screen height For displays with square pixels made up of three subpixels, this measurement area should correspond to a circular area with a diameter of at least 26 lines.

To achieve a viewing area exceeding 500 pixels with an extent of less than 10% of the screen height, adjustments can be made to the measuring distance and aperture angle if necessary Any deviations from standard conditions should be documented in the report.

Light measuring device Display surface

ℓ X0 standard measuring distance = 2,5 V, where V is the screen height or short side length of screen.

Figure 1 – Measuring system and its arrangement

The normal frame frequency for the video test signal should be 60 Hz, unless the module is intended for use at a significantly different frequency In any case, the frame frequency utilized must be documented in the report.

(Position verticale de l'écran: 0,70 m) (Hauteur de plafond: 2,40 m)

Photomètre Éclairement sur un plan vertical

Eclairement sur un plan horizontal au centre du panneau

Lampe(s) fluorescente(s) à luminance ajustable (6 tubes de 40 W)

Distance horizontale entre lampe(s) et panneau: 2,43 m

NOTE Les détails entre parenthèses n’ont qu’une valeur informative.

Figure 2 – Exemple de conditions d’environnement lumineux

Méthode de mesure du rapport de contraste en environnement lumineux 100/70

The contrast ratio in a lighting environment of 100/70 refers to the measured value when the illumination on a vertical plane is 100 lux and the illumination on a horizontal plane is 70 lux.

L'objet de cette méthode est la mesure du rapport de contraste en environnement lumineux

100/70 d’un module d'affichage couleur à plasma.

L’équipement suivant doit être utilisé: a) alimentation de puissance; b) générateur de signal vidéo de test; c) photomètre.

The driving signal equipment is typically set to a standard field frequency of 60 Hz, unless the module is designed for a different frequency It is essential to document the field frequency used in the report.

Horizontal plane illuminance at centre of panel

Luminance adjustable fluorescent lamp(s) (6 × 40 W tubes)

Horizontal distance between lamp(s) and panel: 2,43 m Colour plasma display module

NOTE Details in brackets are for example only.

Figure 2 – Example of bright-room conditions

6.1 Measuring method of bright-room contrast ratio 100/70

The bright-room contrast ratio 100/70 is the value measured under the condition where the vertical-plane illuminance is 100 lx and the horizontal-plane illuminance is 70 lx.

The purpose of this method is to measure the bright-room contrast ratio 100/70 of a colour plasma display module.

The following equipment shall be used: a) driving power source; b) driving signal equipment; c) light measuring device.

The color display module must be measured under standard measurement conditions, ensuring that ambient lighting conditions are properly implemented This includes measuring the luminance of a test window under specific lighting conditions.

Un signal de test vidéo, générant l'affichage d'une fenêtre blanche A 0 ayant une taille de

The test signal, represented as H/5 × V/5 (see Figure 3), must be applied to the input of the color plasma display module by the test signal generator The applied test signal should ensure that the white window reaches maximum luminance (100%), while the rest of the display maintains minimal luminance (0%, black screen) Luminance should be measured at the center of the white test window, referenced as L BR0,04 (cd/m²).

Position de mesure de luminance

Figure 3 – Configuration de mesure de la luminance d'une fenêtre de test de 4 % b) Mesure de la luminance minimale sous éclairage

Test signals must be sequentially applied to the color plasma display module's input, generating four white windows (A1 to A4) as shown in Figure 4, each measuring H/5 × V/5 These signals should ensure that the corresponding white window achieves maximum luminance (100%), while the rest of the display maintains minimal luminance (0%, resulting in a black screen).

Successively display each of the white windows A1 to A4 and, in each case, measure the luminance \( L_{BRi_{min}} \) (where \( i \) ranges from 1 to 4) at the position corresponding to the luminance of the central reference window, specifically at the luminance measurement position illustrated in Figure 4.

Une plaque noire peut être utilisée pour recouvrir la fenêtre blanche active dans le cas ó sa lumière serait réfléchie au point d'affecter la mesure de luminance.

La luminance minimale L BRmin est définie comme suit:

4 min 4 BR min 3 BR min 2 BR min 1 BRmin BR

Si les quatre mesures ci-dessus L BRimin (ó i va de 1 à 4) sont suffisamment uniformes

If the variation is less than 5%, one of the L BRimin measurements obtained using the four display patterns can be substituted for the L BRmin value In this case, the specific display pattern used for the measurement must be clearly noted on the specification sheet.

The color plasma display module will be evaluated under standard measuring conditions, ensuring that bright-room conditions are established to create a standard illumination environment This includes the measurement of window luminance specifically under these bright-room conditions.

The testing input signal for displaying a white window A 0 of size H/5 × V/5 (see Figure 3) shall be applied to the colour plasma display module from the driving signal equipment.

The testing input signal shall ensure that the white window has maximum luminance

The luminance at the center of the white window is measured, with the display showing a maximum luminance of 100% and a minimum luminance of 0%, representing a black display This measurement is referred to as L BR0,04 (cd/m²).

Figure 3 – Four percent window luminance measuring pattern b) Measurement of minimum luminance under bright-room conditions

To test the color plasma display module, input signals will be applied sequentially to each of the four white windows (A1 to A4) as illustrated in Figure 4, with each window measuring H/5 × V/5 These input signals are designed to achieve maximum luminance for the corresponding white window.

(100 %) and that the other part of the display has minimum luminance (0 %, black display).

Display each of the white windows A 1 to A 4 in turn and in each case measure the luminance L BRimin (where i is 1 to 4) at the point where window luminance was measured,

(i.e., at the “luminance measuring position” shown in Figure 4).

A black plate may be used to cover the white window in case reflected light from it affects the measured luminance.

Minimum luminance L BRmin is defined as follows:

4 min 4 BR min 3 BR min 2 BR min 1

If the four measurements of L BRimin (for i = 1 to 4) show a uniformity of less than 5% variation, any one of these measurements can be used as a substitute for L BRmin It is essential to clearly indicate the specific display pattern used for this measurement on the specification sheet.

Point de mesure de luminance (même position qu’à la figure 3) Eclairer une zone à la fois (mesurer quatre fois)

Figure 4 – Configuration de mesure de la luminance minimum c) Calcul du taux de contraste en environnement lumineux 100/70

Le rapport de contraste en environnement lumineux 100/70 (BRCR-100/70) est donné comme suit: min BR

Méthodes de mesure de la puissance du module et de

et de sa consommation de courant

L'objet de cette méthode est la mesure de la puissance et de la consommation de courant d’un module d'affichage couleur à plasma.

The following equipment is required: a power supply, a video signal generator for testing, an AC voltmeter, an AC wattmeter, a DC ammeter, a DC voltmeter, and any additional tools necessary to measure maximum power.

The type or model reference of the AC voltmeter, AC wattmeter, DC ammeter, and DC voltmeter used for measurements must be recorded in the measurement log This log should also include details about any equipment required to measure the maximum power.

Luminance measuring position (same position in Figure 3) Light one window at a time (measure four times)

Figure 4 – Minimum luminance measuring pattern c) Procedure to determine the bright-room contrast ratio 100/70

The bright-room contrast ratio 100/70 (BRCR-100/70) is given as follows: min BR

6.2 Measuring methods of module power and current consumption

The purpose of this method is to measure the power and current consumption of a colour plasma display module.

The essential equipment required includes a driving power source, driving signal equipment, an AC voltmeter, an AC powermeter, a DC ammeter, a DC voltmeter, and any additional tools necessary for measuring maximum power.

The measurement log must include the type or model number of the AC voltmeter, AC powermeter, DC ammeter, and DC voltmeter used, along with any necessary equipment details for measuring maximum power.

Le module d’affichage couleur à plasma doit être installé en accord avec les conditions normales de mesure La puissance fournie au module doit être mesurée comme suit (voir la

To accurately assess the total power consumption of the module, it is essential to measure both the AC power supplied by the integrated power supply and the DC power from the external power source For each power source, record the voltage, current, and power values, along with the intended use of this power, as illustrated in Tables 1 and 2 The total power consumption of the module is determined by summing the power provided by all sources.

La tension appliquée à chaque circuit doit être la tension normale spécifiée dans la feuille de spécification applicable.

Figure 5 – Exemple de schéma de mesure de la puissance et du courant

The color plasma display module must be configured according to standard measuring conditions Power measurements should include both the AC power from the built-in power supply and the DC power from an external source For each power source, it is essential to document the voltage, current, and power values, along with the intended application of that power The total power consumption of the module is determined by summing the powers from all sources.

The voltage applied to each circuit shall be the standard voltage specified on the relevant specification sheet.

Figure 5 – Example of power and current measuring

Tableau 1 – Exemple de mesures de puissance et de courant (pour un module qui inclut une alimentation AC)

Puissance et courant mesurés pour l’affichage du blanc maximum plein écran

1 Alimentation intégrée: système 100 V AC 112,5 – P 1 50 Hz

2 Système 5 V DC 5,10 3,13 P 2 (5,10 × 3,13) Traitement du signal etc.

Total Consommation totale de puissance: P m – – P 1 +P 2 +P 3 +…+…

Tableau 2 – Exemple de mesures de puissance et de courant

(pour un module alimenté DC uniquement)

Total Consommation totale de puissance: P m – – P 1 +P 2 +P 3 +…+… a) Mesure de la puissance et du courant pour un affichage blanc plein écran

To achieve a full-screen white display on a plasma color display module, apply a 100% white input signal to all pixels Measurements should be taken after the stabilization of currents and voltages Additionally, measure the power and current for a full-screen black display.

To achieve a full-screen black display on a plasma color display module, apply a 0% input signal level to all pixels Measurements should be taken after the stabilization of currents and voltages Additionally, assess the maximum power consumption and current.

Due to the module's design, the power consumption display signal differs from the previously mentioned full-screen white display Measurements must be conducted under conditions that yield maximum power consumption It is essential to document the conditions for maximum power consumption and the measurement method on each specification sheet.

The maximum power consumption of a plasma display module varies based on the design of its power limiting and protection circuits Consequently, the displayed image will also influence the maximum power consumption Typically, plasma display modules include circuits that gradually reduce the display's luminance when a static image is shown, leading to lower power consumption; thus, maximum power consumption cannot be accurately measured under perfectly stable conditions Measurements should be conducted under conditions that yield the highest power consumption for a specific module design It is essential to establish a set of conditions and the optimal measurement method for each module design, and this method should be documented on the specification sheet.

Table 1 – Example of power and current measurements

(for a module that includes an AC input)

Measured power and current for full-screen white display

2 DC 5 V system 5,10 3,13 P 2 (5,10 × 3,13) Signal processing etc.

(for a module with DC inputs only)

Total Total power consumption: P m – – P 1 +P 2 +P 3 +…+… a) Measurement of power and current for full-screen white display

To achieve a full-screen white display on the color plasma display module, apply a 100% level white input signal to all pixels, ensuring that measurements are taken only after the currents and voltages have stabilized Additionally, conduct measurements of power and current for a full-screen black display.

To achieve a full-screen black display on the color plasma display module, apply a black input signal at a 0% level to all pixels Measurements should be conducted once the currents and voltages have stabilized, focusing on the maximum power and current consumption.

For modules where the display signal leading to maximum power consumption differs from a full-screen white display, measurements must be conducted under conditions that yield the highest power consumption Each specification sheet should clearly indicate the conditions for maximum power consumption and the details of the measuring method used.

The maximum power consumption of a plasma display module depends on its design, including power limiting and protection circuits Consequently, the displayed image at peak power consumption will also differ Typically, these modules feature circuits that gradually decrease luminance and power consumption when a fixed image is shown, making it challenging to measure maximum power consumption under stable conditions Therefore, measurements should be conducted in scenarios that yield maximum power consumption specific to the module design It is essential to adopt the optimal measuring method for each module design and to document this method on the specification sheet.

Environmental conditions

Measurements shall be carried out at the standard measuring position (refer to Figure 1) after sufficient warm-up time under the standard environmental conditions, e.g at a temperature of

25 °C ± 3 °C, a relative humidity of 25 % to 85 %, and pressure of 86 kPa to 106 kPa When different environmental conditions are used, these shall be noted on the report.

5.2.1 Mise en œuvre en environnement sombre

L’éclairement en tout point de l’écran d’affichage couleur à plasma doit être inférieur à 1 lx.

When the lighting significantly affects the measurement of black level, the method of subtracting the background light should be employed If the background light subtraction method or a different lighting condition is used, it is essential to adjust it accordingly in the report.

5.2.2 Mise en œuvre en environnement sous éclairage

La lampe doit être réglée de manière que les conditions d’éclairement des plans vertical et horizontal soient satisfaites au centre du panneau qui est disposé verticalement.

The lighting accuracy must be within ±5%, and the measured illumination should be clearly documented for each specification If a different illumination level is used, it must be included in the report Ambient lighting on the panel is essential.

Eclairement du plan vertical: 100 lx

Eclairement du plan horizontal: 70 lx b) Source d’éclairement

A straight white fluorescent tube lamp (JIS Z 9112-1990 type N-EDL) with daylight color rendering should be used If adequate lighting cannot be achieved with a single lamp, the use of multiple lamps is permitted Additionally, adjustable luminance lamps are acceptable.

Fluorescent lamps should be used under recommended operating conditions, specifically after 100 hours of aging but before reaching 2,000 hours of use Additionally, the placement of the light source and the display panel is crucial for optimal performance.

The panel must be installed in a vertical plane, with the main axis of the lamps positioned horizontally relative to the floor and parallel to the panel's surface The center of the lamps should be aligned in a vertical plane that is perpendicular to the panel at its center Additionally, adjustments to the illumination should be made accordingly.

Proper lighting should be achieved by adjusting the power of the light source, repositioning the lamps, or relocating the display panel to ensure adequate illumination for both vertical and horizontal planes When measuring illumination, the display should be removed from the measurement area to prevent light reflection from the screen.

Walls should be covered with dark curtains or have no windows, and they must be gray with a reflectivity not exceeding 60% The flooring should also be gray, with a reflectivity that does not exceed 20%.

When measuring illumination, it is essential to consider the color and placement of the measuring device, including the walls, floor, ceiling, and individuals conducting the measurements, to ensure that reflected light does not influence the measured illumination Once the light source is activated, the illumination should be adjusted once it has reached a sufficient level of stability An example of a measurement room is illustrated in Figure 2.

Lighting conditions

Illuminance at any location all over the screen of the colour plasma display shall be less than

When illuminance reaches 1 lx and notably impacts the measurement of the black level, the background subtraction method should be employed Any variations in illuminance or the use of the background subtraction method must be clearly documented in the report.

The lamp shall be adjusted so that the vertical- and horizontal-plane illuminance conditions are satisfied at the centre of the panel, which has been arranged vertically.

The illuminance precision must be maintained at ±5%, with the measured illuminance clearly indicated in each specification Any variations in illuminance used should be documented in the report, particularly regarding the illuminance on the panel.

Horizontal-plane illuminance: 70 lx b) Illumination source

For optimal lighting, a colour-rendering daylight white straight tube fluorescent lamp (JIS Z 9112-1990 type N-EDL) is recommended If a single lamp does not meet the required illuminance, multiple lamps can be utilized Additionally, the use of luminance adjustable lamps is allowed.

Fluorescent lamps should be operated under recommended conditions, specifically after 100 hours of aging and before reaching 2,000 hours of use Additionally, the positioning of the illumination source and display panel is crucial for optimal performance.

The panel must be installed vertically, with the long axes of the lamps positioned horizontally to the floor and parallel to the panel's surface The centers of the lamps should align within a vertical plane that is perpendicular to the panel face and intersects its center.

To ensure optimal visibility, the illumination must be adjusted by modifying the output of the light source, repositioning the lamps, or relocating the display panel to meet the required vertical and horizontal illuminance levels During illuminance measurements, it is essential to move the display away from the measurement position to prevent light reflections from affecting the results.

The walls will feature dark curtains or be windowless and grey, ensuring a reflectivity of no more than 60% Additionally, the floor will be grey with a reflectivity capped at 20%.

When measuring illuminance, it is essential to consider the color and placement of the measurement system, including walls, floor, ceiling, and personnel, to prevent reflected light from influencing the results After activating the light source, adjustments to the illuminance should be made once it has stabilized An example of a measurement room is illustrated in Figure 2.

5.3 Conditions de mise en œuvre

Normal installation conditions are outlined below Each condition must be recorded on every specification form whenever a measurement is taken under conditions that differ from the standard measurement conditions.

5.3.1 Réglage des modules d'affichage couleur à plasma

Pour les modules d'affichage couleur à plasma dont le contraste est réglable, régler celui-ci à la valeur maximale dans des conditions d'environnement de mesure normales.

5.3.2 Préchauffage des modules d'affichage couleur à plasma

Measurements should begin after preheating when the plasma color display module stabilizes The preheating duration must not exceed 30 minutes, with the input signal set to 15% of the gray level across the entire screen without gamma correction.

Measurements should commence after the specified preheating period, once the color plasma display module has stabilized, unless alternative measurement methods are employed Any deviations from the preheating conditions must be reported.

To implement the measurement equipment, the optical axis of the photometer must be aligned perpendicularly to the measurement area of the plasma color display screen The normal measurement distance, denoted as ℓ X0, is equal to 2.5 times V, where V represents the smaller dimension of the screen, typically its height The measurement distance should be maintained between 1.6 times V and 2.8 times V.

The photometer should be set to an appropriate opening angle of 2° or less and must measure an area of at least 500 pixels, covering no more than 10% of the screen height This measurement area corresponds to a circular measurement zone with a minimum size.

A display panel with a diameter of 26 lines features a square pixel made up of three sub-pixels If achieving the specified angle of view is challenging, adjustments can be made to the measurement distance and angle to achieve a measurement field exceeding 500 pixels, while maintaining a range less than 10% of the screen height Any deviations from standard conditions should be documented in the report.

ℓ X0 distance normale de mesure = 2,5 V ó V est la petite dimension de l’écran (en général la hauteur).

Figure 1 – Système de mesure et installation

Set-up conditions

Standard set-up conditions must be documented on each specification form whenever measurements are taken under conditions that differ from these standards.

5.3.1 Adjustment of colour plasma display modules

For contrast adjustable colour plasma display modules, adjust the contrast to the maximum value under the standard measuring environmental conditions.

5.3.2 Warm-up condition of colour plasma display modules

Measurements should commence after a warm-up period of over 30 minutes, ensuring the color plasma display module reaches stability During this time, the signal input must be set to a 15% grey level on a full screen without gamma correction If alternative measuring methods are employed, they should be clearly documented in the report.

To ensure accurate measurements of a color plasma display module, the light measuring device must be positioned perpendicular to the screen The standard measuring distance, denoted as ℓ X0, should be set at 2.5 times the screen height (V), with acceptable distances ranging from 1.6V to 2.8V, and this distance must be documented in the report Additionally, the device should have an aperture angle of 2° or less and must measure an area of at least 500 pixels, which should not exceed 10% of the screen height For displays with square pixels made up of three subpixels, this measurement area should correspond to a circular area with a diameter of at least 26 lines.

To achieve a viewing area exceeding 500 pixels with an extent of less than 10% of the screen height, adjustments can be made to the measuring distance and aperture angle if setting the aperture angle proves challenging Any deviations from standard conditions should be documented in the report.

Light measuring device Display surface

ℓ X0 standard measuring distance = 2,5 V, where V is the screen height or short side length of screen.

Figure 1 – Measuring system and its arrangement

The normal frame frequency for the video test signal should be 60 Hz, unless the module is intended for use at a significantly different frequency In any case, the frame frequency utilized must be documented in the report.

(Position verticale de l'écran: 0,70 m) (Hauteur de plafond: 2,40 m)

Photomètre Éclairement sur un plan vertical

Eclairement sur un plan horizontal au centre du panneau

Lampe(s) fluorescente(s) à luminance ajustable (6 tubes de 40 W)

Distance horizontale entre lampe(s) et panneau: 2,43 m

NOTE Les détails entre parenthèses n’ont qu’une valeur informative.

Figure 2 – Exemple de conditions d’environnement lumineux

6.1 Méthode de mesure du rapport de contraste en environnement lumineux 100/70

The contrast ratio in a lighting environment of 100/70 refers to the measurement taken when the illumination on a vertical plane is 100 lux, while the illumination on a horizontal plane is 70 lux.

L'objet de cette méthode est la mesure du rapport de contraste en environnement lumineux

100/70 d’un module d'affichage couleur à plasma.

L’équipement suivant doit être utilisé: a) alimentation de puissance; b) générateur de signal vidéo de test; c) photomètre.

The driving signal equipment is typically set to a standard field frequency of 60 Hz, unless the module is designed for a different frequency It is essential to document the field frequency used in the report.

Horizontal plane illuminance at centre of panel

Luminance adjustable fluorescent lamp(s) (6 × 40 W tubes)

Horizontal distance between lamp(s) and panel: 2,43 m Colour plasma display module

NOTE Details in brackets are for example only.

Figure 2 – Example of bright-room conditions

Measuring method of bright-room contrast ratio 100/70

The bright-room contrast ratio 100/70 is the value measured under the condition where the vertical-plane illuminance is 100 lx and the horizontal-plane illuminance is 70 lx.

The purpose of this method is to measure the bright-room contrast ratio 100/70 of a colour plasma display module.

The following equipment shall be used: a) driving power source; b) driving signal equipment; c) light measuring device.

The color plasma display module must be measured under standard measurement conditions, ensuring that ambient lighting conditions are properly implemented This includes measuring the luminance of a test window under specific lighting conditions.

Un signal de test vidéo, générant l'affichage d'une fenêtre blanche A 0 ayant une taille de

The test signal, represented as H/5 × V/5 (see Figure 3), must be applied to the input of the color plasma display module by the test signal generator The applied test signal should ensure that the white window reaches maximum luminance (100%), while the rest of the display maintains minimum luminance (0%, black screen) Luminance should be measured at the center of the white test window, referenced as L BR0,04 (cd/m²).

Position de mesure de luminance

Figure 3 – Configuration de mesure de la luminance d'une fenêtre de test de 4 % b) Mesure de la luminance minimale sous éclairage

Test signals must sequentially generate the four white windows A1 to A4, each measuring H/5 × V/5, as shown in Figure 4 These signals should be applied to the input of the plasma color display module by the test signal generator It is essential that each corresponding white window achieves maximum luminance (100%), while the rest of the display maintains minimum luminance (0%, resulting in a black screen).

Successively display each of the white windows A1 to A4, and in each case, measure the luminance \( L_{BRi_{min}} \) (where \( i \) ranges from 1 to 4) at the position corresponding to the luminance of the central reference window, as indicated by the measurement position represented in Figure 4.

Une plaque noire peut être utilisée pour recouvrir la fenêtre blanche active dans le cas ó sa lumière serait réfléchie au point d'affecter la mesure de luminance.

La luminance minimale L BRmin est définie comme suit:

4 min 4 BR min 3 BR min 2 BR min 1 BRmin BR

Si les quatre mesures ci-dessus L BRimin (ó i va de 1 à 4) sont suffisamment uniformes

If the variation is less than 5%, one of the L BRimin measurements obtained using the four display patterns can replace the L BRmin value In this case, the specific display pattern used for the measurement must be clearly noted on the specification sheet.

The color plasma display module will be evaluated under standard measuring conditions, ensuring that bright-room conditions are established to create a standard illumination environment This includes the measurement of window luminance in these bright-room conditions.

The testing input signal for displaying a white window A 0 of size H/5 × V/5 (see Figure 3) shall be applied to the colour plasma display module from the driving signal equipment.

The testing input signal shall ensure that the white window has maximum luminance

The luminance at the center of the white window is measured as L BR0,04 (cd/m²), with one part of the display achieving 100% luminance and the other part exhibiting a minimum luminance of 0%, resulting in a black display.

Figure 3 – Four percent window luminance measuring pattern b) Measurement of minimum luminance under bright-room conditions

To test the color plasma display module, input signals will be applied sequentially to each of the four white windows (A1 to A4) depicted in Figure 4, with each window measuring H/5 × V/5 These input signals are designed to achieve maximum luminance for the corresponding white window.

(100 %) and that the other part of the display has minimum luminance (0 %, black display).

Display each of the white windows A 1 to A 4 in turn and in each case measure the luminance L BRimin (where i is 1 to 4) at the point where window luminance was measured,

(i.e., at the “luminance measuring position” shown in Figure 4).

A black plate may be used to cover the white window in case reflected light from it affects the measured luminance.

Minimum luminance L BRmin is defined as follows:

4 min 4 BR min 3 BR min 2 BR min 1

If the four measurements of L BRimin (for i ranging from 1 to 4) show a uniformity of less than 5% variation, any one of these measurements can be used as a substitute for L BRmin It is essential to clearly indicate the specific display pattern utilized for the measurement on the specification sheet.

Point de mesure de luminance (même position qu’à la figure 3) Eclairer une zone à la fois (mesurer quatre fois)

Figure 4 – Configuration de mesure de la luminance minimum c) Calcul du taux de contraste en environnement lumineux 100/70

Le rapport de contraste en environnement lumineux 100/70 (BRCR-100/70) est donné comme suit: min BR

6.2 Méthodes de mesure de la puissance du module et de sa consommation de courant

L'objet de cette méthode est la mesure de la puissance et de la consommation de courant d’un module d'affichage couleur à plasma.

The following equipment is required: a power supply, a video signal generator for testing, an AC voltmeter, an AC wattmeter, a DC ammeter, a DC voltmeter, and any additional equipment necessary to measure maximum power.

The model type or reference of the AC voltmeter, AC wattmeter, DC ammeter, and DC voltmeter used for measurements must be recorded in the measurement log This log should also include details about any equipment required to measure the maximum power.

Luminance measuring position (same position in Figure 3) Light one window at a time (measure four times)

Figure 4 – Minimum luminance measuring pattern c) Procedure to determine the bright-room contrast ratio 100/70

The bright-room contrast ratio 100/70 (BRCR-100/70) is given as follows: min BR

Measuring methods of module power and current consumption

The purpose of this method is to measure the power and current consumption of a colour plasma display module.

The essential equipment required includes a driving power source, driving signal equipment, an AC voltmeter, an AC powermeter, a DC ammeter, a DC voltmeter, and any additional tools necessary for measuring maximum power.

Record the model numbers of the AC voltmeter, AC powermeter, DC ammeter, and DC voltmeter in the measurement log, along with any necessary equipment details for measuring maximum power.

Le module d’affichage couleur à plasma doit être installé en accord avec les conditions normales de mesure La puissance fournie au module doit être mesurée comme suit (voir la

To accurately assess the total power consumption of the module, it is essential to measure both the AC power supplied by the integrated power supply and the DC power from the external power source For each power source, record the voltage, current, and power values, along with the intended use of this power The total power consumption of the module is determined by summing the power provided by all sources.

La tension appliquée à chaque circuit doit être la tension normale spécifiée dans la feuille de spécification applicable.

Figure 5 – Exemple de schéma de mesure de la puissance et du courant

The color plasma display module must be configured according to standard measuring conditions Power measurements should include both the AC power from the built-in power supply and the DC power from an external source For each power source, it is essential to document the voltage, current, and power values, along with the intended application of that power The total power consumption of the module is determined by summing the powers from all sources.

The voltage applied to each circuit shall be the standard voltage specified on the relevant specification sheet.

Figure 5 – Example of power and current measuring

Tableau 1 – Exemple de mesures de puissance et de courant (pour un module qui inclut une alimentation AC)

1 Alimentation intégrée: système 100 V AC 112,5 – P 1 50 Hz

2 Système 5 V DC 5,10 3,13 P 2 (5,10 × 3,13) Traitement du signal etc.

Total Consommation totale de puissance: P m – – P 1 +P 2 +P 3 +…+…

Tableau 2 – Exemple de mesures de puissance et de courant

(pour un module alimenté DC uniquement)

Total Consommation totale de puissance: P m – – P 1 +P 2 +P 3 +…+… a) Mesure de la puissance et du courant pour un affichage blanc plein écran

To achieve a full-screen white display on a plasma color display module, apply a 100% white input signal to all pixels Measurements should be taken after the stabilization of currents and voltages Additionally, measure the power and current for a full-screen black display.

To achieve a full-screen black display on a plasma color display module, apply a 0% input signal level to all pixels Measurements should be taken after the stabilization of currents and voltages Additionally, assess the maximum power consumption and current during this process.

Due to the module's design, the power consumption display signal differs from the previously mentioned full-screen white display Measurements must be conducted under conditions that yield maximum power consumption It is essential to document the conditions for maximum power consumption and the measurement method on each specification sheet.

The maximum power consumption of a plasma display module varies based on the design of its power limiting and protection circuits Consequently, the displayed image will also affect the maximum power consumption Typically, plasma display modules include circuits that gradually reduce the luminance and power consumption when a static image is shown, indicating that maximum power consumption cannot be measured under perfectly stable conditions Therefore, measurements should be conducted under conditions that yield the maximum power consumption for a specific module design It is essential to adopt a set of conditions and the optimal measurement method for the given module design, and this method should be noted on the specification sheet.

(for a module that includes an AC input)

2 DC 5 V system 5,10 3,13 P 2 (5,10 × 3,13) Signal processing etc.

(for a module with DC inputs only)

Total Total power consumption: P m – – P 1 +P 2 +P 3 +…+… a) Measurement of power and current for full-screen white display

To achieve a full-screen white display on the color plasma display module, apply a 100% level white input signal to all pixels, ensuring that measurements are taken only after the currents and voltages have stabilized Additionally, conduct measurements of power and current for a full-screen black display.

To achieve a full-screen black display on the color plasma display module, apply a black input signal at a 0% level to all pixels Measurements should be conducted once the currents and voltages have stabilized Additionally, assess the maximum power and current consumption during this process.

For modules where the display signal leading to maximum power consumption differs from a full-screen white display, measurements must be conducted under conditions that yield the highest power consumption Each specification sheet should clearly indicate the conditions for maximum power consumption and the details of the measuring method used.

The maximum power consumption of a plasma display module depends on its design, including power limiting and protection circuits Consequently, the displayed image at peak power consumption may vary Typically, these modules feature circuits that gradually decrease luminance and power consumption when a fixed image is shown, making it challenging to measure maximum power under stable conditions Therefore, measurements should be conducted in conditions that ensure maximum power consumption for the specific module design, and the chosen measuring method should be documented on the specification sheet.

6.3 Méthode de mesure de l’efficacité lumineuse du module

L'objet de cette méthode est la mesure de l’efficacité lumineuse d’un module d'affichage couleur à plasma.

The following equipment must be utilized: AC measurement devices f) and g) listed below are used when one or all power supplies are integrated into the module and receive alternating current Only DC measurements should be taken if all power supplied to the module is DC The required equipment includes: a) power supply; b) test video signal generator; c) photometer; d) DC ammeter; e) DC voltmeter; f) AC wattmeter; g) AC voltmeter.

6.3.3 Mesure de l’efficacité lumineuse du module a) Condition de mesure

Le module d’affichage couleur à plasma ne doit pas être équipé de filtre de transmission frontal Si un panneau possède un filtre intégré, cela doit être clairement indiqué.

The color plasma display module must be positioned in a darkroom environment as outlined in section 5.2.1 A measurement device and its setup are illustrated in Figure 1 Apply a 100% white input signal to all pixels of the color display module.

The measurement should be conducted once the Automatic Power Control (APC) of the module stabilizes the consumed power and the delivered luminance Additionally, it is important to identify the measurement points for both luminance and chrominance.

Measuring method of module luminous efficacy

The purpose of this method is to measure the module luminous efficacy of a colour plasma display.

The necessary equipment for measurements includes a driving power source, driving signal equipment, a light measuring device, a DC ammeter, a DC voltmeter, an AC powermeter, and an AC voltmeter AC measuring equipment is utilized when some or all power supplies are integrated into the module and provide alternating current, while only DC measurements are required if the module is powered entirely by DC.

6.3.3 Measurement of module luminous efficacy a) Measurement condition

The colour plasma display module shall not have any front transmission filter mounted on it If a panel has a built-in filter, this shall be clearly stated.

The color plasma display module must be tested in a dark room as outlined in section 5.2.1 The setup for the measuring system is illustrated in Figure 1 A white input signal at 100% intensity should be applied to all pixels of the color display module.

The measurement shall be carried out as soon as the module auto power control (APC) stabilizes the power consumption and luminance output. b) Measuring points of luminance and chromaticity

Luminance measurements can be conducted at either 5 or 9 designated points, specifically from P 0 to P 4 for 5 points, or from P 0 to P 8 for 9 points, as depicted in Figure 6 Additionally, chromaticity is assessed at point P 0, with the color value C 0 (x 0 y 0) being documented.

The mean luminance is given by the following formulas, where luminance at a point P i is L i for measurements at 5 points:

L = + + + + + + + + where i is 0 to 4 or i is 0 to 8.

P 0 à P 8 sont les points de mesure.

Figure 6 – Points de mesure c) Mesure de la consommation de puissance du module

As illustrated in Figure 5, it is essential to measure both the alternating current power supplied by the integrated power supply and the direct current power provided by the external power supply For each power source, record the measured values of voltage, current, power, and the intended use of this power (refer to Tables 1 and 2 for examples) The total power consumption of the module is determined by summing the input power from the external power sources.

La tension appliquée à chaque circuit doit être la tension normale spécifiée sur la feuille de spécification applicable. d) Calcul de l’efficacité lumineuse du module

L’efficacité lumineuse η m du module d’affichage à plasma peut désormais être calculée en utilisant l’équation suivante: m m P av πSL η = (lm/W) ó

L av est la luminance sans filtre de transmission tout écran (cd/m 2 );

S est la surface de l'écran (m 2 );

P m est la puissance consommée par le module (W). e) Enregistrement des mesures

Les éléments ci-dessous doivent être portés au rapport de mesure:

1) luminance et chrominance au cours des mesures de l’efficacité lumineuse;

2) puissance fournie par chaque source de puissance au cours des mesures de l’effica- cité lumineuse.

P 0 to P 8 are the measuring points.

Figure 6 – Measuring points c) Measurement of module power consumption

Figure 5 illustrates the measurement of both the AC power provided to the built-in power supply and the power sourced from the external DC power supply.

For each power source, record the measured voltage, the current and power values and the intended application of that power (see Table 1 and Table 2 as illustrative examples).

The sum of the powers supplied by the external power sources is taken as the total power consumption of the module.

The voltage applied to each circuit shall be the standard voltage specified on the relevant specification sheet. d) Calculation of module luminous efficacy

The module luminous efficacy η m can now be calculated using the following equation: m m P av πSL η = (lm/W) where

L av is the luminance without full-screen transmission filter (cd/m 2 );

P m is the power consumption of the module (W). e) Recording of measurements

The items mentioned below shall be included in the measurement report:

1) luminance and chromaticity during the measurements of module luminous efficacy;

2) power consumption from each power source during measurements of module luminous efficacy.

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Tiêu đề	Plasma Display Panels – Part 2-2: Measuring Methods – Optoelectrical
Trường học	Not specified
Chuyên ngành	Electrical engineering
Thể loại	Standard
Năm xuất bản	2003
Thành phố	Ranchi/Bangalore

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