Audio, video and related equipment - Methods of measurement for power consumption - Part 7: Computer Monitors (IEC 62087-7:2018)

This part of IEC 62087 specifies the determination of the power consumption of computer
monitors including, but is not limited to, those with CRT, LCD, PDP or OLED technologies.
Computer monitors that include touch screen functionality are included in the scope of this
document. This document is limited to computer monitors that are powered from a main power
source other than a battery. Computer monitors that are powered from a battery source are
not covered by this document. However mains-powered computer monitors may include any
number of auxiliary batteries.
Computer monitors connected by digital inputs such as DisplayPort, HDMI, DVI, or by
analogue VGA input, are considered in this document. This document does not apply to
network- and wirelessly connected computer monitors.
A computer monitor is a display device that does not include a TV tuner and is intended to be
used to display the video signals from a computer. These video signals are produced from
software programs that are operating within the computer and can consist of static and
moving images. As such, test procedures using static patterns, dynamic video and web-based
video are specified.
The test methods specified in this document can be applied to computer monitors of any size,
however, this document is not applicable to specialized monitors associated with medical
equipment, publishing and other professional, commercial or industrial uses.
The various modes of operation that are relevant for measuring power consumption are also
defined.
The measuring conditions in this document represent the normal use of the equipment and
can differ from specific conditions, for example as specified in safety standards.

Audio-, Video- und verwandte Geräte - Messverfahren für die Leistungsaufnahme - Teil 7: Rechnerbildschirmgeräte (IEC 62087-7:2018)

Appareils audio, vidéo et matériel connexe – Méthodes de mesure de la consommation d’énergie - Partie 7 : Écrans d’ordinateur (IEC 62087-7:2018)

Avdio, video in pripadajoča oprema - Metode za merjenje porabe energije - 7. del: Računalniški zasloni (IEC 62087-7:2018)

Ta del standarda IEC 62087 določa način ugotavljanja porabe energije računalniških monitorjev, med drugim monitorjev s tehnologijami CRT, LCD, PDP ali OLED, vendar ne omejeno nanje. Računalniški monitorji s funkcijo zaslona na dotik so vključeni na področje uporabe tega dokumenta. Ta dokument je omejen na računalniške monitorje, ki se napajajo iz glavnega vira energije, ki ni baterija. Dokument ne zajema računalniških monitorjev, ki se napajajo iz baterij. Vendar lahko računalniški monitorji, ki se napajajo iz električnega omrežja, vsebujejo poljubno število pomožnih baterij.
V tem dokumentu so upoštevani računalniški monitorji, povezani z digitalnimi vhodi, kot so DisplayPort, HDMI, DVI ali analogni vhod VGA. Ta dokument se ne uporablja za omrežne in brezžično povezane računalniške monitorje.
Računalniški monitor je prikazovalna naprava, ki ne vsebuje TV-kartice in je namenjena za prikaz video signalov iz računalnika. Te video signale ustvarijo aplikacije programske opreme, ki delujejo v računalniku, signali pa so lahko sestavljeni iz statičnih in premikajočih se slik. Tako so preskusni postopki določeni z uporabo statičnih vzorcev, dinamičnega videa in spletnega videa.
Preskusne metode, določene v tem dokumentu, je mogoče uporabiti za računalniške monitorje poljubne velikosti, vendar dokument se ne uporablja za specializirane monitorje, povezane z medicinsko opremo ali založništvom, in za druge profesionalne, komercialne ali industrijske namene.
Opredeljeni so tudi načini delovanja, ki so pomembni za merjenje porabe energije.
Merilni pogoji iz tega dokumenta se navezujejo na običajno uporabo opreme in se lahko razlikujejo od posebnih pogojev, kot so npr. določeni v varnostnih standardih.

General Information

Status
Published
Publication Date
02-Sep-2019
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
21-Feb-2019
Due Date
28-Apr-2019
Completion Date
03-Sep-2019

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SLOVENSKI STANDARD
SIST EN IEC 62087-7:2019
01-oktober-2019

Avdio, video in pripadajoča oprema - Metode za merjenje porabe energije - 7. del:

Računalniški zasloni (IEC 62087-7:2018)

Audio, video and related equipment - Methods of measurement for power consumption -

Part 7: Computer Monitors (IEC 62087-7:2018)

Audio-, Video- und verwandte Geräte - Messverfahren für die Leistungsaufnahme - Teil

7: Rechnerbildschirmgeräte (IEC 62087-7:2018)

Appareils audio, vidéo et matériel connexe – Méthodes de mesure de la consommation

d’énergie - Partie 7 : Écrans d’ordinateur (IEC 62087-7:2018)
Ta slovenski standard je istoveten z: EN IEC 62087-7:2019
ICS:
17.220.20 Merjenje električnih in Measurement of electrical
magnetnih veličin and magnetic quantities
33.160.01 Avdio, video in avdiovizualni Audio, video and audiovisual
sistemi na splošno systems in general
SIST EN IEC 62087-7:2019 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN IEC 62087-7:2019
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SIST EN IEC 62087-7:2019
EUROPEAN STANDARD EN IEC 62087-7
NORME EUROPÉENNE
EUROPÄISCHE NORM
February 2019
ICS 33.160.10
English Version
Audio, video, and related equipment - Methods of measurement
for power consumption Part 7: Computer monitors
(IEC 62087-7:2018)

Appareils audio, vidéo et matériel connexe – Méthodes de Audio-, Video- und verwandte Geräte - Messverfahren für

mesure de la consommation d’énergie - Partie 7 : Écrans die Leistungsaufnahme - Teil 7: Rechnerbildschirmgeräte

d’ordinateur (IEC 62087-7:2018)
(IEC 62087-7:2018)

This European Standard was approved by CENELEC on 2019-01-10. CENELEC members are bound to comply with the CEN/CENELEC

Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC

Management Centre or to any CENELEC member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translation

under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the

same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,

Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,

Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden,

Switzerland, Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2019 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. EN IEC 62087-7:2019 E
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SIST EN IEC 62087-7:2019
EN IEC 62087-7:2019 (E)
European foreword

The text of document 100/2916/CDV, future edition 1 of IEC 62087-7, prepared by IEC/TC 100 "Audio,

video and multimedia systems and equipment" was submitted to the IEC-CENELEC parallel vote and

approved by CENELEC as EN IEC 62087-7:2019.
The following dates are fixed:

• latest date by which the document has to be implemented at national (dop) 2019-10-10

level by publication of an identical national standard or by endorsement

• latest date by which the national standards conflicting with the (dow) 2021-01-10

document have to be withdrawn

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.

Endorsement notice

The text of the International Standard IEC 62087-7:2018 was approved by CENELEC as a European

Standard without any modification.

In the official version, for Bibliography, the following notes have to be added for the standards

indicated:
IEC 62087-3:2015 NOTE Harmonized as EN 62087-3:2016 (not modified)
IEC 62542:2013 NOTE Harmonized as EN 62542:2013 (not modified)
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SIST EN IEC 62087-7:2019
EN IEC 62087-7:2019 (E)
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements 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.

NOTE 1 Where an International Publication has been modified by common modifications, indicated by (mod), the relevant

EN/HD applies.

NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here:

www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 62087-1 - Audio, video, and related equipment - EN 62087-1 2016
Determination of power consumption - Part 1:
General
IEC 62087-2 - Audio, video, and related equipment - EN 62087-2 2016
Determination of power consumption - Part 2:
Signals and media

IEC 62301, mod - Household electrical appliances - Measurement of EN 50564 2011

standby power
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SIST EN IEC 62087-7:2019
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SIST EN IEC 62087-7:2019
IEC 62087-7
Edition 1.0 2018-12
INTERNATIONAL
STANDARD
Audio, video, and related equipment – Methods of measurement for power
consumption
Part 7: Computer monitors
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.160.10 ISBN 978-2-8322-6329-7

Warning! Make sure that you obtained this publication from an authorized distributor.

® Registered trademark of the International Electrotechnical Commission
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SIST EN IEC 62087-7:2019
– 2 – IEC 62087-7:2018 © IEC 2018
CONTENTS

FOREWORD ........................................................................................................................... 4

INTRODUCTION ..................................................................................................................... 6

1 Scope .............................................................................................................................. 7

2 Normative references ...................................................................................................... 7

3 Terms, definitions and abbreviated terms ........................................................................ 8

3.1 Terms and definitions .............................................................................................. 8

3.2 Abbreviated terms ................................................................................................... 8

4 Specification of operating modes and functions ............................................................... 8

4.1 General ................................................................................................................... 8

4.2 Auto power down function ....................................................................................... 9

5 Measurement conditions ................................................................................................ 10

5.1 General ................................................................................................................. 10

5.2 Power supply ........................................................................................................ 10

5.3 Environmental conditions ...................................................................................... 10

5.4 Ambient light conditions ........................................................................................ 10

5.5 Measuring equipment ............................................................................................ 10

5.5.1 Power measuring instrument ......................................................................... 10

5.5.2 Luminance measuring device ......................................................................... 10

5.5.3 Illuminance measuring instrument .................................................................. 10

5.6 Signal generation .................................................................................................. 10

5.6.1 Equipment ..................................................................................................... 10

5.6.2 Interfaces ...................................................................................................... 10

5.6.3 Accuracy ....................................................................................................... 10

5.7 Light source for specific illuminance levels ............................................................ 11

5.8 Light source for disabling the ABC feature ............................................................ 11

5.9 Picture controls ..................................................................................................... 11

5.9.1 Manufacturer's settings .................................................................................. 11

5.9.2 Static test pattern settings ............................................................................. 11

6 Procedure ...................................................................................................................... 12

6.1 Order of activities.................................................................................................. 12

6.2 Preparation ........................................................................................................... 13

6.2.1 Measuring plan .............................................................................................. 13

6.2.2 Power supply voltage and frequency .............................................................. 14

6.2.3 Input terminals ............................................................................................... 14

6.2.4 Video signal, on-mode power consumption procedure ................................... 14

6.2.5 Video format .................................................................................................. 14

6.2.6 Automatic brightness control capabilities ....................................................... 14

6.2.7 Automatic brightness control levels ................................................................ 15

6.3 Initial activities ...................................................................................................... 15

6.3.1 Order of initial activities ................................................................................. 15

6.3.2 Cool down ..................................................................................................... 16

6.3.3 Installation ..................................................................................................... 16

6.3.4 Application of input signals ............................................................................ 16

6.3.5 Luminance measuring device setup ............................................................... 16

6.3.6 Light source setup ......................................................................................... 16

6.3.7 Power ............................................................................................................ 17

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6.3.8 Computer monitor settings ............................................................................. 17

6.4 Determination of power consumption, on mode ..................................................... 18

6.4.1 Order of activities .......................................................................................... 18

6.4.2 Stabilization ................................................................................................... 18

6.4.3 Computer monitors without automatic brightness control enabled by

default ........................................................................................................... 18

6.4.4 Computer monitors with automatic brightness control enabled by default ....... 19

6.4.5 Power measurement ...................................................................................... 20

6.5 Determination of power factor ............................................................................... 21

6.6 Determination of power consumption, partial on mode .......................................... 21

6.6.1 General ......................................................................................................... 21

6.6.2 Order of activities .......................................................................................... 21

6.6.3 AV inputs ....................................................................................................... 21

6.6.4 Standby-passive ............................................................................................ 21

6.6.5 Standby-active, low ....................................................................................... 22

6.7 Determination of power consumption, off mode ..................................................... 22

6.7.1 Connections and networking .......................................................................... 22

6.7.2 Availability ..................................................................................................... 22

6.7.3 Measurement ................................................................................................. 22

Bibliography .......................................................................................................................... 23

Figure 1 – Recommended order of activities ......................................................................... 13

Figure 2 – Order of initial activities........................................................................................ 15

Figure 3 – Light source configuration .................................................................................... 17

Figure 4 – Order of activities for determining power consumption, on mode .......................... 19

Figure 5 – Order of activities for determining the power consumption, partial on mode ......... 21

Table 1 – Operating modes and functions ............................................................................... 9

Table 2 – Luminance levels for specified MP resolutions ...................................................... 12

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– 4 – IEC 62087-7:2018 © IEC 2018
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
AUDIO, VIDEO, AND RELATED EQUIPMENT –
METHODS OF MEASUREMENT FOR POWER CONSUMPTION
Part 7: Computer monitors
FOREWORD

1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising

all national electrotechnical committees (IEC National Committees). The object of IEC is to promote

international co-operation on all questions concerning standardization in the electrical and electronic fields. To

this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,

Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC

Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested

in the subject dealt with may participate in this preparatory work. International, governmental and non-

governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely

with the International Organization for Standardization (ISO) in accordance with conditions determined by

agreement between the two organizations.

2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international

consensus of opinion on the relevant subjects since each technical committee has representation from all

interested IEC National Committees.

3) IEC Publications have the form of recommendations for international use and are accepted by IEC National

Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC

Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any

misinterpretation by any end user.

4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications

transparently to the maximum extent possible in their national and regional publications. Any divergence

between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in

the latter.

5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity

assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any

services carried out by independent certification bodies.

6) All users should ensure that they have the latest edition of this publication.

7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and

members of its technical committees and IEC National Committees for any personal injury, property damage or

other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and

expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC

Publications.

8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is

indispensable for the correct application of this publication.

9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of

patent rights. IEC shall not be held responsible for identifying any or all such patent rights.

International Standard IEC 62087-7 has been prepared by technical area 12: AV Energy 14

efficiency and smart grid applications of IEC technical committee 100: Audio, video and

multimedia systems and equipment.
The text of this International Standard is based on the following documents:
CDV Report on voting
100/2916/CDV 100/2988/RVC

Full information on the voting for the approval of this International Standard can be found in

the report on voting indicated in the above table.

This document has been drafted in accordance with the ISO/IEC Directives, Part 2.

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SIST EN IEC 62087-7:2019
IEC 62087-7:2018 © IEC 2018 – 5 –

A list of all parts in the IEC 62087 series, published under the general title Audio, video and

related equipment, can be found on the IEC website.

The committee has decided that the contents of this document will remain unchanged until the

stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to

the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
A bilingual version of this publication may be issued at a later date.
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SIST EN IEC 62087-7:2019
– 6 – IEC 62087-7:2018 © IEC 2018
INTRODUCTION

This part of IEC 62087 specifies methods of measurement for the power consumption of

computer monitors for use with computers. The test method includes power measurement

using static patterns and both the broadcast and web-based dynamic test loops.

The test method also includes testing with the automatic brightness control (ABC) function

where it is incorporated into a computer monitor.

The test method has also been made consistent with the test method for televisions in

IEC 62087-3.
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IEC 62087-7:2018 © IEC 2018 – 7 –
AUDIO, VIDEO, AND RELATED EQUIPMENT –
METHODS OF MEASUREMENT FOR POWER CONSUMPTION
Part 7: Computer monitors
1 Scope

This part of IEC 62087 specifies the determination of the power consumption of computer

monitors including, but is not limited to, those with CRT, LCD, PDP or OLED technologies.

Computer monitors that include touch screen functionality are included in the scope of this

document. This document is limited to computer monitors that are powered from a main power

source other than a battery. Computer monitors that are powered from a battery source are

not covered by this document. However mains-powered computer monitors may include any

number of auxiliary batteries.

Computer monitors connected by digital inputs such as DisplayPort, HDMI, DVI, or by

analogue VGA input, are considered in this document. This document does not apply to

network- and wirelessly connected computer monitors.

A computer monitor is a display device that does not include a TV tuner and is intended to be

used to display the video signals from a computer. These video signals are produced from

software programs that are operating within the computer and can consist of static and

moving images. As such, test procedures using static patterns, dynamic video and web-based

video are specified.

The test methods specified in this document can be applied to computer monitors of any size,

however, this document is not applicable to specialized monitors associated with medical

equipment, publishing and other professional, commercial or industrial uses.

The various modes of operation that are relevant for measuring power consumption are also

defined.

The measuring conditions in this document represent the normal use of the equipment and

can differ from specific conditions, for example as specified in safety standards.

2 Normative references

The following documents are referred to in the text in such a way that some or all of their

content constitutes requirements 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 62087-1, Audio, video, and related equipment – Determination of power consumption –

Part 1: General

IEC 62087-2, Audio, video, and related equipment – Determination of power consumption –

Part 2: Signals and media
IEC 62301, Household electrical appliances – Measurement of standby power
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3 Terms, definitions and abbreviated terms
3.1 Terms and definitions

For the purposes of this document, the terms and definitions given in IEC 62087-1 and the

following apply.

ISO and IEC maintain terminological databases for use in standardization at the following

addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1.1
ND filter
neutral density filter
optical device that reduces the light intensity in the visible wavelength region
3.1.2
computer monitor
product for the display of data, visual and video signals from a computer
3.1.3
default picture setting
picture setting as set by the manufacturer for computer monitors
3.1.4
special functions

functions that are related to, but not required for, the basic operation of the device

Note 1 to entry: Examples of special functions include, but are not limited to, special sound processing, power

saving functions (e.g. automatic brightness control), cameras, motion sensors and microphones.

3.2 Abbreviated terms
AV audio-visual
ABC automatic brightness control
CRT cathode ray tube
DVI Digital Visual Interface
LCD liquid crystal display
LMD luminance measuring device
ND neutral density
OLED organic light-emitting diode
PDP plasma display panel
SCR silicon controlled rectifier
UUT unit under test
VGA Video Graphics Array
4 Specification of operating modes and functions
4.1 General
Table 1 contains the operating modes and functions for computer monitors.
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IEC 62087-7:2018 © IEC 2018 – 9 –
4.2 Auto power down function

An auto power down feature may be implemented on a computer monitor to power down into

a standby mode after a predetermined time and possibly predetermined conditions. Such a

feature should be referred to as "auto power down".
Table 1 – Operating modes and functions
Power Mode Sub-mode Function(s) Description
0 W Disconnected Disconnected Disconnect from The equipment is
power source disconnected from all
external power sources.
Off Off Off The equipment is connected
≥0 W
to an external power source
and provides no functions
that depend on a power
source. The equipment
cannot be switched into any
other mode with the remote
control unit, or an external or
internal signal. Note that
some power may be
consumed if an EMC filter or
other components exist on
the source side of the power
switch.
> 0 W Partial On- Standby-passive The equipment is connected
– Wake on
to an external power source
• remote control
and does not provide its
• internal signa
primary functions. The
equipment can be switched
into another mode with the
remote control unit or an
internal signal, but not with
an external signal
Standby-active, low The equipment is connected
– Wake on
to an external power source
• remote control
and does not provide its
• internal signal
primary functions.
• external signal
The equipment can be
switched into another mode
with the remote control unit,
an internal signal, or an
external signal.
Standby-active, high The equipment is connected
– Wake on
to an external power source
• remote control
and does not provide its
• internal signal
primary functions.
• external signal
The equipment can be
switched into another mode
– Data
with the remote control unit,
communications
an internal signal, or an
external signal. Additionally,
the equipment is exchanging/
receiving data with/from an
external source.
On Operation The computer monitor is
Operation
connected to an external
power source and provides
pictures and, if possible,
sound.
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5 Measurement conditions
5.1 General

Clause 5 specifies requirements that are independent of the equipment to be evaluated. When

setting up a test laboratory, these requirements shall be taken into account.
The requirements in Clause 5 apply to the procedures specified in Clause 6.
5.2 Power supply
Defined in IEC 62087-1:2015, 5.1.1.
5.3 Environmental conditions
Defined in IEC 62087-1:2015, 5.1.2.
5.4 Ambient light conditions

For determining on-mode power consumption for computer monitors with ABC enabled,

≤ 1 lux shall be confirmed at the surface of the ABC sensor assembly with the light sources

(5.7, 5.8) off and the UUT in the off or disconnected mode.

For determining the peak luminance ratio with a non-contact LMD, ≤ 5 lux shall be confirmed

at the nominal centre of the display area of the UUT in the off or disconnected mode. This

requirement applies whether or not a light source (5.8) is applied to disable the ABC feature.

A dark room and/or shroud may be necessary in order to achieve the required ambient light

conditions.
5.5 Measuring equipment
5.5.1 Power measuring instrument
Defined in IEC 62087-1:2015, 5.1.5.
5.5.2 Luminance measuring device
Defined in IEC 62087-1:2015, 5.1.6.
5.5.3 Illuminance measuring instrument
Defined in IEC 62087-1:2015, 5.1.7.
5.6 Signal generation
5.6.1 Equipment
Defined in IEC 62087-2:2015, 6.1.
5.6.2 Interfaces
Defined in IEC 62087-2:2015, 6.2.
5.6.3 Accuracy
Defined in IEC 62087-2:2015, 6.3.
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IEC 62087-7:2018 © IEC 2018 – 11 –
5.7 Light source for specific illuminance levels

The light source used for illuminating the ABC sensor to specific illuminance levels shall use a

dimmable halogen lamp in a sealed reflector and shall have a diameter of 120 mm or less.

The rated correlated colour temperature shall be 2 800 K ± 300 K at its rated voltage. The

front surface of the lamp shall be clear (i.e. not coloured or coated with a spectrum modifying

material) and may have a smooth or granular front surface. The lamp assembly shall not

modify the spectrum of the halogen source, including the IR and UV bands.

For luminance levels below 10 lux, a 2-stop ND filter (3.1.1) shall be used. No ND filter shall

be used for luminance levels at or above 10 lux. The ND filter shall be of the absorptive type

and shall be large enough cover the entire light acceptance area of the ABC sensor assembly

with a margin of at least 5 mm on all sides. The ND filter shall have an average t

...

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