ISO/IEC 21118:2020

Information technology — Office equipment — Information to be included in specification sheets for data projectors

This document specifies the information to be included in the specification sheets for front projection type data projectors and the form of specification sheets. This document is not applicable to units for a rear screen projection.

Technologies de l'information — Équipements de bureau — Information à inclure dans les feuilles de spécifications pour projecteurs de données

General Information

• Status: Published
• Publication Date: 02-Feb-2020
• ICS: 35.260 - Office machines
• Technical Committee: ISO/IEC JTC 1/SC 28 - Office equipment
• Drafting Committee: ISO/IEC JTC 1/SC 28 - Office equipment
• Current Stage: 6060 - International Standard published
• Start Date: 03-Feb-2020
• Due Date: 09-Jan-2021
• Completion Date: 03-Feb-2020

Relations

• Revises: ISO/IEC 21118:2012 - Information technology — Office equipment — Information to be included in specification sheets — Data projectors
• Effective Date: 14-Oct-2017

Standards Content (Sample)

INTERNATIONAL ISO/IEC
STANDARD 21118
Third edition
2020-02
Information technology — Office
equipment — Information to be
included in specification sheets for
data projectors
Technologies de l'information — Équipements de bureau —
Information à inclure dans les feuilles de spécifications pour
projecteurs de données
Reference number
ISO/IEC 21118:2020(E)
©
ISO/IEC 2020

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ISO/IEC 21118:2020(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO/IEC 2020
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
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Website: www.iso.org
Published in Switzerland
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ISO/IEC 21118:2020(E)

Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Measuring methods and conditions . 3
5 Items in specification sheets . 4
Annex A (normative) Specification sheets . 9
Annex B (normative) Measuring methods and conditions .11
Bibliography .23
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ISO/IEC 21118:2020(E)

Foreword
ISO (the International Organization for Standardization) and IEC (the International Electrotechnical
Commission) form the specialized system for worldwide standardization. National bodies that
are members of ISO or IEC participate in the development of International Standards through
technical committees established by the respective organization to deal with particular fields of
technical activity. ISO and IEC technical committees collaborate in fields of mutual interest. Other
international organizations, governmental and non-governmental, in liaison with ISO and IEC, also
take part in the work.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for
the different types of document should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject
of patent rights. ISO and IEC shall not be held responsible for identifying any or all such patent
rights. Details of any patent rights identified during the development of the document will be in the
Introduction and/or on the ISO list of patent declarations received (see www .iso .org/ patents) or the IEC
list of patent declarations received (see http:// patents .iec .ch).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see www .iso .org/
iso/ foreword .html.
This document was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology,
Subcommittee SC 28, Office equipment.
This third edition cancels and replaces the second edition (ISO/IEC 21118:2012), which has been
technically revised.
The main changes compared to the previous edition are as follows:
— progress of light source technologies (from lamp to laser, LED, etc.);
— diversification of input/output signals (HDMI, display port, HDBase-T, etc.);
— move toward higher resolution (4K, 8K, pixel shift technology, etc.);
— description of colour quality (colour gamut ratio).
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/ members .html.
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INTERNATIONAL STANDARD ISO/IEC 21118:2020(E)
Information technology — Office equipment —
Information to be included in specification sheets for data
projectors
1 Scope
This document specifies the information to be included in the specification sheets for front projection
type data projectors and the form of specification sheets.
This document is not applicable to units for a rear screen projection.
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.
ISO 7779:2018, Acoustics — Measurement of airborne noise emitted by information technology and
telecommunications equipment
ISO 11201, Acoustics — Noise emitted by machinery and equipment — Determination of emission sound
pressure levels at a work station and at other specified positions in an essentially free field over a reflecting
plane with negligible environmental corrections
IEC 60107-2:1997, Methods of measurement on receivers for television broadcast transmissions — Part 2:
Audio channels — General methods and methods for monophonic channels
IEC 61947-1, Electronic projection — Measurement and documentation of key performance criteria —
Part 1: Fixed resolution projectors
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
3.1
data projector
display equipment that converts electrical signals containing image information from automatic data
processing machines into optical signals and projects onto a projection screen
3.2
light valve
light-modulation device (such as a transmissive or reflective liquid crystal display, or a micro
mirror device) used to create an optical image from an external light source that corresponds to an
electrical signal
3.3
wide-angle end
minimum focal length position of the zoom lens
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ISO/IEC 21118:2020(E)

3.4
lens shift
projecting function which is vertical or horizontal repositioning of the projection lens relative to the
light valve (3.2) to compensate for projector to screen alignment differences
3.5
image position
presentation of shifts of projected image on horizontal and vertical directions
Note 1 to entry: It is calculated as per Formulae (1) and (2):
X = (X - X ) / W × 100 % (1)
shift cpi axis pi
Y = (Y - Y ) / H × 100 % (2)
shift cpi axis pi
where
X , Y are the horizontal and vertical image shift ratios;
shift shift
X , Y are x and y coordinates of P (X , Y ) (as shown in Figure 1), the centre of the project-
cpi cpi cpi cpi cpi
ed image;
X , Y are x and y coordinates of P (X , Y ) (as shown in Figure 1), the point at which the axis
axis axis axis axis axis
of the projection lens intersects the screen;
W , H are the overall width and height of the projected image.
pi pi
Note 2 to entry: The horizontal image shift ratio is positive when P is at the right of P , and negative when
cpi axis
P is at the left of P .
cpi axis
Note 3 to entry: The vertical image shift ratio is positive when P is above P , and negative when P is
cpi axis cpi
below P .
axis
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ISO/IEC 21118:2020(E)

Key
1 projection lens
a
Axis of projection lens.
b
Projected image.
c
Centre of projected image; P (X , Y ).
cpi cpi cpi
d
Intersection of axis of projection lens and surface of projected image; P (X , Y ).
axis axis axis
e
Horizontal image shift.
f
Vertical image shift.
Figure 1 — Shifted image position
3.6
projection distance
distance between the projector and the screen measured in linear units (i.e. metres, feet, or inches)
Note 1 to entry: This distance is considered to be the distance from the image displayed on the screen to the
outermost element of the projection lens.
[SOURCE: IEC 61947-1:2002, 3.29]
3.7
rear screen projection
projection with image projected through a light-transmitting screen to the audience side of the screen
[SOURCE: IEC 61947-1:2002, 3.30]
3.8
standard outside dimensions
maximum dimensions of the product after removing the packaging, including any protrusions
4 Measuring methods and conditions
The measuring methods and conditions in terms of the performance specification items in Table 1 shall
be in accordance with Annex B.
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ISO/IEC 21118:2020(E)

5 Items in specification sheets
Table 1 lists the items that shall appear in the specification sheets. Items whose properties shall be
included in the specification sheets are marked as “R” (required), while other items whose properties
are given for information are marked as “O” (optional).
Values in the specification of light output, contrast ratio (full white/full black) and centre to corner
zone ratio shall be defined as averages of productions. The lower-limit values of the product at the time
of shipment shall be at least 80 % of the values in specification sheets for these three items.
The specification sheets shall have a statement indicating accordance with this document. The
terminology shown in the “Item” column of Table 1 shall be used in the specification sheets. Items
marked as optional may be omitted, along with any items that do not apply to the particular projector
model. If an item is omitted; the order of items included in the specification sheets shall maintain the
same order as shown in Table 1.
The form of the specification sheets shall be as given in Annex A.
NOTE The term “specification sheets” applies to documents which describe the performance characteristics
of the data projector which can be included in instruction manuals, product catalogues or on websites.
Table 1 — Performance specification items
No. Item R/O Item specification Description example
1 Product number, type R The product name, type name, model —
name, or model number numbers, or product numbers shall be
indicated.
2 Display system R The light valve type and the display sys- a) LCD, micro mirror,
tem shall be indicated. other
b) transmitting,
reflecting
c) single display device, 3
display devices, other
3 Optical system O The optics for colour separation and a) dichroic mirror
convergence should be indicated. separation-prism
convergence system
b) time sharing
separation/
convergence system
c) other
4 Display device
4.1 Size of effective display R Diagonal size, number of display device 33 mm × 3 / 1,3 in × 3,
area and aspect ratio shall be indicated. aspect ratio 4 : 3
4.2 Number of pixels R Pixel count per display device and pixel 786 432 pixels
dimensions shall be indicated. (1 024 × 768)
1 024 000 pixels
(1 280 × 800)
 O Pixel count per projected image inclosing 2 211 840 pixels
enhanced pixel number and such tech- (2 048 × 1 080)
nology should be indicated. by pixel shift
4.3 Other O Additional features of the display device
should be indicated.
5 Projection lens
"R" in the R/O column means required items and "O" means optional items.
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ISO/IEC 21118:2020(E)

Table 1 (continued)
No. Item R/O Item specification Description example
5.1 Zoom R Zoom magnifications shall be indicated. Power zoom (1,4 ×)
5.2 Focus R Method of focus adjustment shall be Manual or powered
indicated.
5.3 Lens shift O Image position, fixed/variable, manual/ Fixed lens shift: xx (%)
powered should be indicated.
Vertical lens shift range,
Indicate lens shift range, fixed/variable
XX %(up) - XX %(down)
type and manual/powered.
XX %(right) - XX %(left)
Range of single vertical lens shift may be
described as "Lens shift XX % to XX %"
(see 3.5)
Image position for fixed lens shift.
Image position for variable shift.
In case an optical axis position is una-
vailable, an illustration may be used.
5.4 Focal length O - f = 52 mm — 73 mm
f/number f / 2,5 — 2,9
5.5 Changeable lens O If the projection lens can be changed, it Yes or no
should be indicated.
6 Light source R Light source type shall be indicated. Lamp, laser diode, LED,
other
If the light source type is a lamp, the
lamp type, wattage and quantity shall be high pressure mercury
indicated. lamp, 300 W, × 2
7 Life expectancy of light O The time when light source output 20 000 h at normal mode
Source halves should be indicated.
In the case of lamp, see IEC 61947-1.
Other case of light source, driving se-
quence is continuous lighting.
The operating mode shall be indicated.
8 Screen size [projection R The minimum and maximum diagonal Minimum:
distance] sizes of the projected image shall be 58,4 cm / 23 in to
indicated. maximum:
762 cm / 300 in
 O The associated projection distance Projection distance:
should also be indicated. For products 1,2 m to 11,5 m
with an indefinite measurement, the
projection distance should be indicated
using illustrations.
9 Throw ratio O Throw ratio = projection distance / Throw ratio: 0,5
width of the projected image.
When projection distance differs from
the definition given in 3.6, it shall be
explained independently.
10 Number of colours O The maximum number of reproducible 16 700 000 colours
colours shall be indicated.
11 Light output R The light output on a projected screen As average value of
shall be measured and indicated. production units
2 000 lm
(see B.2.2)
"R" in the R/O column means required items and "O" means optional items.
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ISO/IEC 21118:2020(E)

Table 1 (continued)
No. Item R/O Item specification Description example
12 Contrast ratio (full white/ O The ratio of screen illuminance between As average value of
full black) the full white and full black levels of pro- production units
jected images should be indicated. Meas-
2 000: 1 in high contrast
urement conditions shall be indicated.
mode for iris ON, standard
lens
(see B.2.3)
13 Centre to corner zone ratio O The ratio between the centre illumi- As average value of produc-
nance and 4-peripheral-point average tion units
illuminance of a full-white image should
85 % (see B.2.4)
be indicated.
14 Colour gamut ratio O The reference standard colour gamut 90 % (sRGB)
area-coverage ratios in the CIE 1931 xy
(see B.6)
chromaticity diagram.
The operating mode shall be indicated.
15 Speaker R The output power of the speaker shall be 10 W × 2 stereo (see B.3)
indicated.
 O The number of speakers and whether 2 speakers, stereo
stereo or monaural should be indicated
as well.
16 Displayable scanning
frequency
16.1 Horizontal R The range of displayable horizontal fre- 15 kHz to 100 kHz
quencies shall be indicated.
Detail of corresponding frequency may
be indicated in a separate sheet.
16.2 Vertical R The range of displayable vertical fre- 50 Hz to 120 Hz
quencies shall be indicated.
Detail of corresponding frequency may
be indicated in a separate sheet.
17 Input compatibility
17.1 Data input signal O The maximum input resolution for a Maximum input resolution
data signal input should be indicated.
1 280 × 800 dots
Notational convention method shall be
indicated as well.
(resizing display)
If there are two or more signal types
(systems), all of them should be specified.
17.2 Video input signal O The displayable video signal type (sys- NTSC, PAL / SECAM
tem) should be indicated.
18 Signal input/output ter-
minals
"R" in the R/O column means required items and "O" means optional items.
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ISO/IEC 21118:2020(E)

Table 1 (continued)
No. Item R/O Item specification Description example
18.1 Image signal input/output R The signal type, connector type, and HDMI: 2
terminals number of connectors shall be indicated.
RGB input: 3
Any order of entries and contents are
acceptable. If the terminal has sever- RGB output: 1
al functions, these may be entered as
RGB input terminals (mini-
remarks.
D-sub 15-pin × 2, DVI-I x 1)
RGB output terminal (mini-
D-sub 15-pin)
Video/S-video input: 1 line
Video input port (RCA pin)
S-video terminal (mi-
ni-DIN 4-pin)
18.2 Audio signal input/output R The signal type, connector type, and Audio input terminal (ste-
terminals number of connectors shall be indicated. reo mini jack)
Any order of entries and contents are
acceptable. If the terminal has sever-
al functions, these may be entered as
remarks.
18.3 Other signal input/output O Control signal input/output terminals Mouse input terminal
terminals and other relevant descriptions should
LAN port and USB terminal
be given. Any order of entries and con-
tents are acceptable.
19 Control input/output
19.1 Control input/output O Control signal input/output terminals —
terminals should be indicated.
19.2 Network monitoring con- O Available means in network monitor- SNMP
trol communication means ing control communication should be
indicated.
19.3 Other input/output infor- O Other related input/output information —
mation should be indicated.
20 Acoustic noise O The noise value should be measured as a Sound pressure level at the
sound pressure level (see B.4). bystander positions: 35 dB
at normal operation mode.
Acoustic power level should also be
indicated. Acoustic power level: 4,5 B
at normal operation mode.
The operating mode shall be indicated.
Acoustic power level should be meas-
ured in accordance with ISO 7779.
21 Operating temperature R The temperature range within which 5 °C to 35 °C
the product normally operates shall be
indicated.
Operating humidity O The humidity range within which the 20 % to 70 %
product normally operates should be
indicated.
22 Operation position O Acceptable position of projection should Desktop, ceiling, portrait
be indicated.
23 Power requirements R The rated voltage and frequency shall be AC 100 V, 50 / 60 Hz
indicated.
24 Maximum power con- R The maximum power consumption shall 380 W (see B.5.3.1)
sumption be indicated in watts. Information about
other modes should also be indicated.
"R" in the R/O column means required items and "O" means optional items.
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ISO/IEC 21118:2020(E)

Table 1 (continued)
No. Item R/O Item specification Description example
25 On-mode power con- O The on-mode power consumption shall 300 W (see B.5.3.2)
sumption be indicated in watts. Information about
other modes should also be indicated.
26 Standby mode power con- R The standby mode power consumption 2 W (see B.5.3.3)
sumption shall be indicated in watts.
 O The standby power consumption at vari- 1 W at sleep mode
ous modes should also be indicated with
the mode.
27 Standard outside dimen- R The standard outside dimensions of the W 270 mm × H 43 mm × D
sions product (width, height, and depth, in this 199 mm
order) shall be indicated in millimetres
W 270 mm × H 43 mm × D
for maximum value.
199 mm (without
When dimensions without protrusions protrusions)
are also indicated, they shall be specified
within parentheses.
28 Weight R The weight of the main body of the prod- 15,1 kg (detachable remote
uct without accessories shall be indicat- controller included)
ed in kilograms or grams. Any conditions
shall be indicated within parentheses.
29 Accessories R The names of the accessories supplied Remote controller, lens cap,
together with the product shall be RGB cable, mouse cable,
indicated. power cable, and
instruction manual
Numbers of accessories may also be
indicated.
30 Other functions O Features and special functions other —
than those indicated in items 1 to 25
should be indicated.
"R" in the R/O column means required items and "O"
...