Tobii Pro X3-120 Technical specifications

Tobii Pro X3–120 Eye Tracker
Product Description

Product Description Tobii Pro X3–120 Eye Tracker
Version 1.0.2
01/2016
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Content subject to chan e without notice.
Please check Tobii web site www.tobiipro.com for updated
versions of this document.

Table of Contents
1 Introduction.................................................................................................................................... 1
1.1 Overview...............................................................................................................................1
1.2 Applications Areas .................................................................................................................1
1.3 Basic Operatin Principles ......................................................................................................1
2 Technical Specifications ................................................................................................................ 2
2.1 Tobii Pro X3–120 Eye Tracker Specifications ............................................................................2
3 Data Output................................................................................................................................... 5
4 Eye Trackin Setups ...................................................................................................................... 6
4.1 Typical Tobii Pro X3–120 Eye Tracker Screen Setups ................................................................6
4.1.1 Local Live Viewer ....................................................................................................6
4.2 Typical Tobii Pro X3–120 Eye Tracker Physical Object Setup ......................................................7
4.2.1 External video stimulus recordin ..............................................................................7
Appendix A Glossary .......................................................................................................................... 8
Appendix B Accuracy and Precision Measurements ........................................................................... 9
B1 Gaze Precision.......................................................................................................................9
B2 Gaze Accuracy ......................................................................................................................9
Appendix C Safety and Compliance ................................................................................................. 10
C1 Safety.................................................................................................................................10
C1.1 Mountin Warnin .................................................................................................10
C1.2 Emer ency Warnin ..............................................................................................10
C1.3 Infrared Warnin ...................................................................................................10
C1.4 Epilepsy Warnin ..................................................................................................10
C1.5 Ma netic Field Warnin .........................................................................................10
C1.6 Child Safety .........................................................................................................11
C1.7 Do not Open the Tobii Pro X3–120 .........................................................................11
C1.8 Environment .........................................................................................................11
C2 Compliance Information ........................................................................................................11
C2.1 FCC Statement.....................................................................................................11
C2.2 Industry Canada Statement ....................................................................................11
C2.3 CE Statement.......................................................................................................12
C2.4 Standards ............................................................................................................12
C2.5 Disposin of the Tobii Pro X3–120..........................................................................12
C3 Other limitations and considerations .......................................................................................12
C3.1 Intended use ........................................................................................................12
C3.2 Li ht conditions ....................................................................................................12
C3.3 Eyelashes.............................................................................................................12
C3.4 Droopy eyelids......................................................................................................12
C3.5 Keepin Tobii Pro X3–120 firmware up to date.........................................................13

1 Introduction
1.1 Overview
This document describes the features and functionality of the Tobii Pro X3–120 Eye Tracker. The Tobii Pro X3–120 is a stand
alone eye tracker that can be used in various setups by attachin it to monitors, laptops or for performin eye trackin on physi-
cal objects. The eye tracker requires some assembly before first time use and after transport.
The Tobii Pro X3–120 Eye Tracker is an unobtrusive eye tracker for detailed research of natural behavior. Its lar e head move-
ment box allows the subject to move durin recordin while maintainin accuracy and precision. The Tobii Pro X3–120 Eye
Tracker offer maximum flexibility with numerous software and stimuli set-up options. The Tobii Pro X3-120 has a samplin rate
of 120 Hz.
The Tobii Pro X3–120 is a compact and li ht wei ht eye tracker measurin only 324 mm (12.7’’) in len th and only 118 rams
(4.2 Oz) in wei ht. It enables your portable eye trackin lab and studies that require an eye tracker to track even lar e objects at
close distances. Use the eye trackers to conduct studies on:
• Laptops
• PC monitors up to appr. 25″(16:9)
• Mobile devices
• Real-world interfaces
• Projections, simulators
• TV screens
1.2 Applications Areas
The modular system can be used both in screen and real-world test scenarios, makin way for a very broad spectrum of studies.
You can mount the eye tracker on a laptop, a PC monitor, an all-in-one PC, or even a tablet. Present your stimuli usin a projec-
tion or TV. You can study real-world interfaces like a control panel, an ATM or a store shelf. The supplied mountin solutions
support a variety of study desi ns. Tobii Pro X3–120 Eye Tracker — is desi ned for studies aimed at determinin precisely
where the participants are lookin and for studyin and measurin eye fixations and other eye trackin metrics based on these.
1.3 Basic Operating Principles
Durin trackin , Tobii Pro Eye Trackers use infrared diodes to enerate reflection patterns on the corneas of the subject’s eyes.
These reflection patterns, to ether with other visual data about the subject, are collected by the ima e sensor. Sophisticated
ima e processin al orithms identify relevant features, includin the eyes and the corneal reflection patterns. Complex mathe-
matics is used to calculate the 3D position of each eyeball, and finally the aze point on the screen; in other words, where the
subject is lookin .
Tobii Eye Trackers are desi ned for use in indoor office environments with adult participants.
Tobii Pro X3–120 Eye Tracker Product Description v.1.0.2 - en-US 1 Introduction 1

2 Technical Specifications
The characteristics of an eye tracker can be described in terms of aze accuracy and aze precision. Accuracy describes the
an ular avera e distance from the actual aze point to the one measured by the eye tracker. Gaze precision describes the spa-
tial variation between successive samples collected when the subject fixates at a specific point on a stimuli. More information re-
ardin the accuracy and precision measurements can be found in Appendix B Accuracy and Precision Measurements, page 9
in tests reports available on the Tobii Pro web site. A lossary can be found at Appendix A Glossary, page 8.
2.1 Tobii Pro X3 120 Eye Tracker Specifications
Table 2.1 Gaze Accuracy (preliminary)
Gaze accuracy1Tobii Pro X3-120 Eye Tracker (firmware version — 1.7.1
Binocular Monocular
At ideal conditions 0.4 0.5
At 25° gaze angle 0.6 0.7
At 30° gaze angle 0.6 0.8
At 1 lux 1.0 1.6
At 300 lux 0.4 0.5
At 600 lux 0.5 0.6
At 1000 lux 0.5 0.7
White stimuli background 0.7 0.9
1. Accuracy under ideal conditions is measured in the center of the head movement box. Data is collected immediately after calibration in a controlled laboratory environment with constant illumi-
nation with stimuli points at aze an les of ≤20º.
Table 2.2 Gaze Precision (preliminary)
Gaze precision at ideal conditions Tobii Pro X3-1201
Binocular Monocular
Artificial Eye N/A N/A
Human Eye 0.24 0.34
1. Dynamic illumination pattern compensation is applied in the Tobii Pro X3–120 Eye Tracker.
Table 2.3 Eye Tracking Specifications (preliminary)
Eye Tracking Specifications Tobii Pro X3-120 Eye Tracker
Sampling rate 120 Hz
Eye tracking technique Corneal reflection, dark and bri ht pupil combination
Binocular tracking Yes
Pupil measurement Yes (40 Hz, bri ht pupil mode only)
Total system latency <11 ms
Time to tracking recovery For blinks: immediate
After lost trackin : <100 ms
Head movement1Freedom of head movement at 80
cm (width x hei ht) 50 cm x 40 cm (19.7″x 15.7″)
Operatin distance (eye tracker to
participant)
50 – 90 cm (19.6″– 35.4″)
22 Technical Specifications Tobii Pro X3–120 Eye Tracker Product Description v.1.0.2 - en-US

Eye Tracking Specifications Tobii Pro X3-120 Eye Tracker
Recommended screen size Up to 25″(16:9)
Data sample output Timestamp, eye position, aze point, pupil diameter,
validity code
1. Freedom of head movement describes the volume in front of the tracker in which the user must have at least one of the eyes. The numbers are specified parallel/ortho onal to screen surface,
assumin the eye tracker is at a 20 de ree an le to the screen.
Table 2. Eye Tracking Unit
Eye Tracking Unit Tobii Pro X3-120 Eye Tracker
Eye tracker processing On Windows PC or External Processin Unit (accessory)
Connectors USB 3.0 (with BC 1.2), LAN with External Processin Unit (accessory)
Weight 118 (4.2 oz)
Size 324 x 20 x 17 mm (12.7 x 0.8 x 0.7″)
Mounting solutions Adhesive Mountin brackets for monitors, laptops and tablets. Desk Stand
Accessory packa e for Tripods and desks.
Table 2.5 Tobii Pro X3-120 Eye Tracker External Processing Unit (accessory)
Connectors USB 3.0, LAN and power connector
Size 115 x 111 x 32.7 mm (W * D * H)
Weight 0.5 k .
Table 2.6 Hardware package content
Tobii Pro X3-120 Eye Tracker
4 x Adhesive mountin brackets for permanent installation.
4 x Mountin bracket adapters for existin Tobii Pro X2–30/60 adhesive mountin brackets.
4 x Adhesive mountin brackets for Tobii Pro X2–30 and X2–60 eye trackers
Safety Instructions and Installation Guide
USB cable
Travel Case
Cleanin Wipe
Tobii Pro X3-120 Eye Tracker USB memory stick containin the Tobii Pro X3–120 installer, documentation and trainin
video.
Tobii Pro X3-120 Eye Tracker user manual (PDF)
Table 2.7 Accessories
Tobii Pro X3-120 External Processin Unit
Tobii Mobile Device Stand
Additional Mountin Bracket
Tobii Pro X3-120 Desk Stand Packa e
Tobii Pro X3–120 Eye Tracker Product Description v.1.0.2 - en-US 2 Technical Specifications 3

Table 2.8 Compliance
In ress protection IP class 20
CE - European Union Yes
FCC - USA Yes
IC - Canada Yes
RCM - Australia Yes
Eye Safety IEC/EN 62471:2008 Yes
Electrical safety IEC 60950–1:2005 Yes
RoHS 2 Yes
WEEE — European Union Yes
Table 2.9 Compatible software
Tobii Pro Studio 3.3.4 or later.
Tobii Analytics SDK 3.1.0 or later.
Other applications built on the Tobii Analytics SDK 3.1.0 or later.
Table 2.10 Minimum system requirements
Operatin system Windows 7, Windows 8.1 (64 bit) or later
CPU Intel Core i7 (4 cores), 2.0 GHz
RAM 8 GB
Connectors 1 x USB 3.0 with the latest driver and with BC 1.2 or 1 x Gi -
abit LAN port for External Processin Unit (accessory).
42 Technical Specifications Tobii Pro X3–120 Eye Tracker Product Description v.1.0.2 - en-US

3 Data Output
Different applications can be connected as clients to the eye tracker to, e. ., ather eye aze data in real-time and perform cali-
brations. Applications that can be used to ether with the eye tracker include the Tobii Pro Studio software, third party software
products, or your own custom software based on the Tobii Software Development Kit. For more information about the sup-
ported software products please refer to the product descriptions and documentation for the respective products.
Below is a summary of the data that the eye tracker outputs. Please note that the parameter names, definitions and coordinate
systems may differ dependin on the software used, please refer to the software documentation for additional information.
Timestamp Timestamp in microseconds from the eye tracker’s internal clock. Additional timestamps are
available in Tobii Studio.
Gaze Point Left X, Y Horizontal (X) and vertical (Y) coordinates of the aze point for the left eye. Available in dif-
ferent coordinate systems in Tobii Studio and the Tobii Analytics Software Development Kit.
Eye Position Left X, Y, Z The 3D position of the left eye in relation to the eye tracker. Available in different coordinate
systems in Tobii Studio and the Tobii Analytics Software Development Kit.
Pupil Diameter Left Estimated diameter of the left eye pupil in millimeters.
Validity Code Left Indicates whether or not left eye has been correctly identified by the eye tracker.
Gaze Point Right X, Y Horizontal (X) and vertical (Y) coordinates of the aze point for the ri ht eye. Available in dif-
ferent coordinate systems in Tobii Studio and the Tobii Analytics Software Development Kit.
Pupil Diameter Right Estimated diameter of the ri ht eye pupil in millimeters.
Eye Position Right X, Y, Z The 3D position of the ri ht eye in relation to the eye tracker. Available in different coordi-
nate systems in Tobii Studio and the Tobii Analytics Software Development Kit.
Validity Code Right Indicates whether or not the ri ht eye has been correctly identified by the eye tracker.
The validity code can have two values for X3–120:
• 0: The eye was identified.
• 4: The eye was not identified.
Tobii Pro X3–120 Eye Tracker Product Description v.1.0.2 - en-US 3 Data Output 5

4 Eye Tracking Setups
This chapter describes typical setup confi urations that can be used with the Tobii Pro X3–120 Eye Tracker. For specific infor-
mation about custom confi urations or system requirements and recommendation, please contact your Tobii Pro sales repre-
sentative or Tobii Pro technical support. The System Requirements and Recommendations document can be downloaded at
www.tobiipro.com.
Your particular needs mi ht differ from these typical confi urations. More detailed information is available in the Eye Tracker
User Manual provided with the product.
4.1 Typical Tobii Pro X3 120 Eye Tracker Screen Setups
These basic setups are the simplest setups when usin on screen stimuli, such as ima es, movies or web. To record the partici-
pant’s reactions, the conversation between the test leader and test participant, you need to connect an external user camera
and microphone to the computer runnin Tobii Pro Studio. The setups below do not include the user camera and user sound.
Single Screen Setups
4.1.1 Local Live Viewer
The setup below is used when the test is to be supervised from a separate screen where the test leader can see the eye move-
ments of the subject in real time durin testin .
Local Live Viewer Setups
64 Eye Trackin Setups Tobii Pro X3–120 Eye Tracker Product Description v.1.0.2 - en-US

4.2 Typical Tobii Pro X3 120 Eye Tracker Physical Object Setup
When studyin a stimuli that doesn’t have a screen or when studyin an external device such as a mobile phone, a physical ob-
ject setup needs to be used where a video or web camera captures the ima e of the stimuli.
To record the participant’s reactions, the conversation between the test leader and test participant, you need to connect an ad-
ditional camera and microphone to the computer runnin Tobii Pro Studio. The setups below do not include the user camera
and user sound.
Physical Object Setup
4.2.1 External video stimulus recordin
This setup is suitable when usin a Tobii Eye Trackin system for eye trackin data analysis when the stimulus is presented from
a separate computer or other RGB or VGA sources. This could include a computer ame, a DVD player, or when stimulus is
presented on a computer runnin a different operatin system. The computer runnin Tobii Pro Studio must be equipped with
an additional video capture card.
Note that if the external application runs on the Windows operatin system, and it does not use 3D raphics accelera-
tion or it does not have a hi h processor load and hi h memory usa e, it may be more suitable and less complex to in-
stead run this on the same computer as Tobii Pro Studio and use the Screen Recordin option in Tobii Pro Studio.
For this setup, the ima e from the Tobii Pro Studio computer has to be displayed on the screen durin calibration (to display the
calibration points). The external stimulus computer, however, should be shown on the screen durin the actual test. Both devi-
ces must therefore be connected to the same screen. To switch between the inputs, use a switch or a screen that allows for
multiple input sources. The ima e shown on the screen must be sent to Tobii Pro Studio to record the video stream and syn-
chronize it with the aze data. If the stimulus is presented from an analo ue video source, e. ., a VCR or an analo ue video cam-
era, a similar setup with sli htly modified components can be used.
External Video Stimulus Recording Setup
Tobii Pro X3–120 Eye Tracker Product Description v.1.0.2 - en-US 4 Eye Trackin Setups 7

Appendix A Glossary
Monocular/
binocular
Monocular data shown is based on data from the participant’s dominant eye only. Binocular data is
the avera e of the two eyes.
Gaze precision Describes the spatial an ular variation between a set of consecutive aze samples. Gaze precision
can be measured under various conditions.
Gaze accuracy Describes the an ular avera e distance from the actual aze point to the one measured by the eye
tracker. Gaze accuracy can be measured under various conditions.
Sampling rate Number of eye trackin data samples per second.
Total system
latency
The duration from mid-point of the eye ima e exposure, to when a sample is available via the API on
the client computer. This includes half of the ima e exposure time plus ima e read-out and transfer
time, processin time and time to transfer the data sample to a client computer.
Time to tracking
recovery for blinks
When a participant blinks, the eye tracker loses the ability to track eye aze because the eye is
covered by the eyelid. If the pupil is occluded for only a short period, the system will re ain trackin
immediately when the pupil becomes visible a ain, but only if the participant has maintained
approximately the same head position durin the blink. Data durin blinks are only lost when the
pupil is occluded, i.e. durin the eyelid movement itself or when the eye is closed.
Time to tracking
recovery after lost
tracking
An eye tracker workin in a natural user environment may occasionally lose track of the participant’s
eyes, e. ., when the participant completely turns away from the tracker. If a period of a few hundred
milliseconds elapses durin which the eye tracker is unable to detect the eyes in close proximity to
where they were last detected, the eye tracker will start searchin for the eyes within the entire
head movement box. The stated measurement is the typical time to trackin recovery in such a
situation. If the eye tracker is unable to detect the eyes of the participant even after about one
minute, the system will enter a “slow search” mode, leadin to lar er recovery times.
Freedom of head
movement
Describes an area ( width x hei ht in cm) where at least one eye is within the eye tracker’s field of
view.
Operating distance Describes the ran e of distances (minimum and maximum) between the participant’s eyes and the
surface coverin the eye tracker sensors at which eye trackin can be done while maintainin
trackin .
Eye tracking
processing unit
Gaze data calculations are performed by firmware embedded in the eye tracker or in a separate
processin unit.
8Appendix A Glossary Tobii Pro X3–120 Eye Tracker Product Description v.1.0.2 - en-US

Appendix B Accuracy and Precision
Measurements
Gaze accuracy and precision are typically measured in de rees of visual an le. One de ree accuracy corresponds to an
avera e error of 12 mm (0.47’’) on a screen at a distance of 65 cm (27’’). Data is presented as monocular or binocular.
Monocular data is based on data from the subject’s dominant eye only. Binocular data is the avera e of both eyes. Please refer
to the test report Tobii Pro X3-1 0 Eye Tracker Accuracy and Precision Test Report.pdf for more details about the accuracy
and precision performance of the Tobii Pro X3–120 and the test methodolo y used.
B1 Gaze Precision
Precision measurements are done usin artificial eyes to eliminate artifacts from human eye movements. Tobii Pro specifies
precision both with and without noise reduction filters. All measurements are done at the default samplin rate of the eye
tracker and at the optimum distance between the eye tracker and the subject. Precision is calculated as root-mean-square
(RMS) of successive samples.
As the distance from the eye tracker influences precision, measurements are also taken at various distances. Data from these
measurements is binocular.
B2 Gaze Accuracy
Accuracy under ideal conditions is measured in the center of the head movement box. Data is collected immediately after
calibration, in a controlled laboratory environment with constant illumination, with stimuli points at aze an les ≤20º.
Measurements are done on 20 test subjects without lenses, lasses or droopy eyelids. Accuracy for one subject is calculated
as the mean of several data samples for several stimuli points across a screen. The accuracy fi ure presented is the mean
accuracy from all subjects.
Good accuracy is difficult to achieve at lar e aze an les, but is important when testin lar e stimuli. For instance, the upper
corner of a 23’’ screen with the test subject at a distance of 65 cm (26’’) from the eye tracker corresponds to a 32º visual an le
from the center of the eye tracker unit. Consequently, measurements are also presented for stimuli presentations at lar e aze
an les.
When luminance of the stimuli or the illumination in the lab chan es, the size and shape of the pupil is affected. Unless
compensated for, this may cause a si nificantly reduced accuracy. Testin the influence of surroundin li ht and stimuli
luminance on accuracy is done in a laboratory environment with controlled li ht conditions. Stimuli points are presented on a
black back round so as not to influence ambient li ht conditions. Testin is also done with ambient li ht at a level deemed
‘normal’ office li htin where the back round is chan ed to white with black stimuli points. The results from a test in which the
back round was chan ed has been referred to as Drift in previous Tobii product description documents.
As with precision, the distance from the eye tracker influences accuracy. When testin this influence, calibration is done with
the subject in the center of the head movement box (i.e. at a distance of 65 cm) and measurements are done thereafter.
Measurements are performed with the test subject at precise and specific distances relative to the eye tracker, measured alon
the axis of the trackin sensors. Data from these measurements is binocular.
Tobii Pro X3–120 Eye Tracker Product Description v.1.0.2 - en-US Appendix B Accuracy and Precision Measurements 9

Appendix C Safety and Compliance
C1 Safety
C1.1 Mountin Warnin
The Tobii Pro X3–120 should be mounted accordin to MANUFACTURER instructions of approved mounts.
Tobii AB or its a ents are not liable for dama e or injuries to a person or its property due to a Tobii Pro X3–120
fallin from a mounted confi uration. The mountin of a Tobii Pro X3–120 is done entirely at the user’s own risk.
The double sided tape supplied with the adhesive Ma netic Mountin Plates is desi ned to permanently attach the
bracket to the monitor/laptop. Attemptin to remove the bracket after attachin it usin the supplied tape can result in
dama e both to the monitor/laptop and the bracket.
Do not lick the tape or place any part of the tape or Ma netic Mountin Plate in one's mouth.
Do not mount the Tobii Pro X3–120 on monitors positioned above the head or face of a users unless usin a
dedicated "fixed mountin " solution.
C1.2 Emer ency Warnin
The Tobii Pro X3–120 system is to be used for research purposes only. Be aware that due to the low, but possible
risk of failure or distraction, the Tobii Pro X3–120 should not be relied upon or used in dan erous or otherwise critical
situations.
C1.3 Infrared Warnin
When activated, the Tobii Pro X3–120 emits pulsed infrared (IR) li ht. Certain medical devices are susceptible to
disturbance by IR li ht and/or radiation. Do not use the Tobii Pro X3–120 when in the vicinity of such susceptible
medical devices as their accuracy or proper functionality could be inhibited.
C1.4 Epilepsy Warnin
Some people with Photosensitive Epilepsy are susceptible to epileptic seizures or loss of consciousness when
exposed to certain flashin li hts or li ht patterns in everyday life. This may happen even if the person has no medical
history of epilepsy or has never had any epileptic seizures.
A person with Photosensitive Epilepsy would also be likely to have problems with TV screens, some arcade ames,
and flickerin fluorescent bulbs. Such people may have a seizure while watchin certain ima es or patterns on a
monitor, or even when exposed to the li ht sources of an eye tracker. It is estimated that about 3-5% of people with
epilepsy have this type of Photosensitive Epilepsy. Many people with Photosensitive Epilepsy experience an "aura" or
feel odd sensations before the seizure occurs. If you feel odd durin use, move your eyes away from the eye tracker.
C1.5 Ma netic Field Warnin
The Tobii Pro X3–120 Ma netic Mountin Plates contains ma nets. Ma netic fields may interfere with the function of
cardiac pacemakers and implantable cardioverter-defibrillators. As a eneral rule, maintain a minimum distance of 6
inches (15 centimeters) between any item with ma nets and your heart device.
The ma nets can also shut off the monitor on a laptop if the laptop is equipped with a ma netic sensor to switch off
the monitor when closin the laptop. If this happens, shut of the sensor on the laptop.
10 Appendix C Safety and Compliance Tobii Pro X3–120 Eye Tracker Product Description v.1.0.2 - en-US

C1.6 Child Safety
The Tobii Pro X3–120 is an advanced computer system and electronic device. As such it is composed of numerous
separate, assembled parts. In the hands of a child certain of these parts have the possibility of bein separated from
the device, possibly constitutin a chokin hazard or another dan er to the child.
Youn children should not have access to, or the use of, the device without parental or uardian supervision.
C1.7 Do not Open the Tobii Pro X3–120
Non-compliance will result in loss of Warranty! There are no user serviceable components inside. Contact
Tobii Pro Support if your Tobii Pro X3–120 is not workin properly.
C1.8 Environment
The Tobii Pro X3–120 system is desi ned for use in dry indoor environments. Avoid any exposure to direct sunli ht
as this will affect eye trackin quality and lon er exposure can overheat the equipment. Avoid exposure to any liquids,
els, moist, rain, sweat or other damp materials or environments. Do not use the eye tracker near water — the device
is not water resistant.
The device complies with IP Class 20 and has no protection a ainst objects smaller than 5 mm. Keep the eye tracker
in a clean and dust free environment. When usin the equipment take adequate precautions a ainst dust and dirt.
Do not place or use the equipment in places subject to extreme temperatures and humidity, such as on top of and or
near a heatin element, in a hot or damp room, or in a hot automobile in the sun.
C2 Compliance Information
All Tobii Pro X3-120 eye trackers are CE-marked, indicatin compliance with the essential health and safety
requirements set out in European Directives.
C2.1 FCC Statement
This device complies with Part 15 of the FCC Rules. Operation is subject to the followin two conditions: (1) this device may
not cause harmful interference, and (2) this device must accept any interference received, includin interference that may cause
undesired operation.
Modifications not expressly approved by Tobii AB could void the user’s authority to operate the equipment under
FCC rules.
This equipment has been tested and found to comply with the limits for a Class B di ital device, pursuant to part 15 of the FCC
Rules. These limits are desi ned to provide reasonable protection a ainst harmful interference in a residential installation. This
equipment enerates, uses and can radiate radio frequency ener y and, if not installed and used in accordance with the
instructions, may cause harmful interference to radio communications.
However, there is no uarantee that interference will not occur in a particular installation. If this equipment does cause harmful
interference to radio or television reception, which can be determined by turnin the equipment off and on, the user is
encoura ed to try to correct the interference by one or more of the followin measures:
• Reorient or relocate the receivin antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into a wall outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or experienced radio/TV technician for assistance.
C2.2 Industry Canada Statement
This Class B di ital apparatus complies with Canadian ICES-003.
Cet appareil numérique de la classe B est conforme à la norme NMB-003 du Canada.
Tobii Pro X3–120 Eye Tracker Product Description v.1.0.2 - en-US Appendix C Safety and Compliance 11

C2.3 CE Statement
The Tobii Pro X3–120 complies with the followin Directives:
• 2011/65/EU (RoHS 2) - Restriction of Hazardous Substances Directive
• 2004/108/EC (EMC) - Electroma netic Compatibility Directive
C2.4 Standards
The Tobii Pro X3–120 complies with the followin standards:
• IEC/EN 62471:2008, Photo Biolo ical Safety of Lamps and Lamp Systems
•
EMC Emission: EN 61000-6-3:2007, Generic Emission standard for residential, commercial and li ht industry
environments
•
EMC Immunity: EN 61000-6-1:2007, Generic Emission standard for residential, commercial and li ht industry
environments
•
EN 55024:1998+A1+A2, Information technolo y equipment. Immunity characteristics. Limits and methods of
measurement
• IEC 60950–1:2005, Safety of information technolo y equipment
• FCC part 15, Class B
C2.5 Disposin of the Tobii Pro X3–120
Do not dispose of the Tobii Pro X3–120 in eneral household or office waste. Follow your local re ulations for the disposal of
electrical and electronic equipment.
C3 Other limitations and considerations
C3.1 Intended use
The Tobii Pro X3–120 is intended to be used in research activities about human behavior includin eye movements,
involvin adult participants in a dry and dust free indoor environment. The product should only be used as described
in the User’s Manual. Please read the User’s Manual and other supplied documentation thorou hly before usin the
product.
C3.2 Li ht conditions
We recommend that eye trackin studies be performed in a controlled and well-lit environment. Sunli ht should be
avoided since it contains hi h levels of infrared li ht which will interfere with the eye tracker system. Sunli ht affects
eye trackin performance severely and lon er exposure can overheat the eye tracker. The eye tracker is not desi ned
for exposure to (direct) sunli ht. Eye trackin enerally does not work in stron direct sunli ht. Shieldin the eye
tracker adequately from the sun may prevent sunli ht from interferin with eye trackin . For better performance, use
the supplied tinted lenses if the product is used in an environment with stron sunli ht..
C3.3 Eyelashes
Lon eyelashes can be obstructive when the participant’s eyes are less open, especially if the participant is wearin
mascara. In rare cases, eyelashes may completely block the view of the participant’s pupils, makin eye trackin
impossible.
C3.4 Droopy eyelids
Droopy eyelids or otherwise obstructive eyelids can block the view of the participant’s pupils. In rare cases, such
eyelids may completely block the view of the participant’s pupils, makin eye trackin impossible.
12 Appendix C Safety and Compliance Tobii Pro X3–120 Eye Tracker Product Description v.1.0.2 - en-US

C3.5 Keepin Tobii Pro X3–120 firmware up to date
From time to time Tobii Pro will release updates for the eye tracker firmware that will improve performance and/or
introduce new functionality. The latest firmware can be downloaded from the Tobii Pro Support website http://www.
tobii.com/analysissupport. Make sure to re ularly check for and update to the latest version of the software and
firmware.
Tobii Pro X3–120 Eye Tracker Product Description v.1.0.2 - en-US Appendix C Safety and Compliance 13

Tobii Pro Support
EUROPE / GLOBAL NORTH AMERICA JAPAN CHINA
Phone (SWE): [phone] Phone: [phone] Phone: [phone] Phone: [phone]
Phone (GER): [phone]
[email protected] [email protected] [email protected] [email protected]
Support hours: 8 am - 6 pm Support hours: 8 am - 8 pm Support hours: 9 am - 5.30 pm
Between July-Au ust: 9 am - 5 pm (US Eastern Standard Time, GMT -6) (Japan Standard Time, GMT +9)
(Central European Time, GMT +1)
Tobii Pro X3–120 Eye Tracker Product Description v.1.0.2 - en-US
©Tobii®. Illustrations and specifications do not necessarily apply to products and services offered in each local market. Technical specifications are subject to chan e without prior notice. All other trademarks are the property of their respective owners.