User's Manual Tobii X2-60 Eye Tracker
Contents
1. 2 Perform the measurements and enter the corresponding values as described below e Active Display Area Size The correct display or stimuli size must always be added in the X Configuration Tool The Active Display Area is represented by the area on which the calibration is performed If you are using an external calibration grid it must have the same shape as the calibration pattern used in Tobii Stu dio and include either five or nine points The calibration points can be drawn on a paper marked on a calibration board or marked on objects in the scene Make sure that the corners of the calibration grid are exactly 90 degrees and that the center point is exactly in the middle of the grid It is also good to include the 25 larger Active Display Area around the grid to make it easier to measure the parameters required in the X Configuration Tool How to calculate the 2500 larger Active Display Area for the setups that use an external calibration grid is described below Active Display Area Height 1 25 x Calibration grid height Active Display Area Width 1 25 x Calibration grid width mm Width Width x 1 25 Height Height x 1 25 gt lt a Calibration grid Virtual screen 25 larger For TV screens and other displays measure the size of the visible active area on the screen where you can see the actual image see the following image 142. Recommended screen size up to 25 16 9 Data sample output Timestamp eye position gaze point pupil diameter validity code 1 Freedom of head movement describes the volume in front of the tracker in which the user must have least one of the eyes The numbers are specified parallel orthogonal to screen surface assuming the eye tracker is at a 20 degree angle to the screen Table A 4 Eye Tracking Unit Eye Tracking Unit Tobii X2 60 Eye Tracker Compact Edition Eye tracker processing unit X2 60 Eye Tracker external processing unit Connectors USB 2 0 Weight 200 g 7 1 oz Size 184 x 28 x 23 mm 7 2 x 1 1 x 0 9 Mounting solutions Adhesive Mounting brackets for monitors laptops and tablets Desk Stand Accessory package for Tripod and desks Table A 5 Tobii X2 60 Eye Tracker external processing unit Connectors USB 2 0 LAN and power connector Size 116 6x112x 39 mm 4 6 x 4 4 x 1 55 Weight 500 g 17 6 oz Table A 6 Hardware package content Tobii X2 60 Eye Tracker Compact Edition Hardware Package Tobii X2 60 Eye Tracker Compact Edition 3 x Adhesive mounting bracket kit each kit contains 3 brackets for different screen depths for permanent installation Safety Instructions Tobii X2 60 Eye TrackerUser s manual v 1 0 1 en US Appendix A Tobii 2 60 Eye Tracker Specifications 25 Tobii X2 60 E
3. 2 Hardware Package Sa Ce ee en 7 en ey eer er ee eee ee n 2 2 1 Standard MEC ods mtieaiindenniciadonsdanlleSametaieinds oldepaatametsie 2 2 2 Available AC CESSOMNES M TT 3 WE I oso o lo o ee M Q 4 3 1 Temperature lt aae m 4 3 1 1 CIIICHI 4 3 1 2 Transportationrarid StOl ag 6 PA IP EEE EE 4 3 2 Siu 4 3 3 Transporting the Tobi X2 Eye Tracker 4 3 4 Disposing of the X2 Eye Tracker 4 4 Setting Up the X2 60 Eye 5 4 1 gii SUIS NESS caer natin 5 4 2 MOUNTING the Eye can Sama u n ene diet id UMEN dU SENEC TNR IIS NEUE 5 4 2 1 Mounting the X2 Eye Tracker Compact Edition to a 6 4 2 2 Mounting the X2 Eye Tracker Using a Desk 5 7 4 3 Connecting the X2 60 Eye Tracker external processing 9 4 4 EVE Tracker InstallOE
4. 4 Setting Up the Tobii X2 60 Eye Tracker Tobii X2 60 Eye Tracker User s manual v 1 0 1 en US A For projected displays measure the size of the visible projection on the display see the following image In a setup where the stimuli are filmed by a scene camera the active display area must be calculated based on the calibration grid size A eye tracker angle Calibrate the digital angle gauge supplied with the X2 Eye Tracker desk stand package before measuring the angle between the eye tracker and the vertical plane To calibrate the digital angle meter place it on a flat vertical surface and press the Zero button To measure the angle place the digital angle gauge on the front surface of the eye tracker In many setups the angle is commonly around 25 degrees B display angle Measure the angle between the vertical plane and the active display using the digital angle meter In a scene camera setup measure the angle between the vertical plane and the calibration grid If the display is tilted forward you should enter a negative angle use in front of the value If the active display is completely vertical the angle value is O In a scene camera setup where you want to track objects on a horizontal table the angle would be 90 degrees C Height difference between lowest row of pixels on the display and the measuring point of the eye tracker read 4 6 1 Reference Measurement Point of the Tobii X2 Eye Tra
5. Tobii X2 Eye Tracker Disconnect all the cables and use the zipper bag provided When you transport the device for repair or shipment use the original casing and packaging materials 34 Disposing of the Tobii X2 Eye Tracker Do not dispose of the X2 Eye Trackers in general household or office waste Follow your local regulations for the disposal of electrical and electronic equipment 4 3 Product Care Tobii X2 60 Eye Tracker User s manual v 1 0 1 en US 4 Setting Up the Tobii 2 60 Eye Tracker The main steps you need to perform in order to set up and configure the X2 Eye Tracker are 1 Check that you have all the components needed read 2 Hardware Package Content page 2 2 Check the prerequisites in 4 1 Prerequisites page 5 3 Mount the X2 Eye Tracker according to the setup that you will use read 4 2 Mounting the Eye Tracker page 5 4 Connect the Tobii X2 60 Eye Tracker External Processing Unit read 4 3 Connecting the X2 60 Eye Tracker ex ternal processing unit page 9 5 Install the prerequisites from the provided USB memory stick read 4 4 Tobii Eye Tracker Installer page 9 6 configuration software read 4 6 The X Configuration Tool page 13 7 Install the supported eye tracking software such as Studio or the SDK 1 You can also watch instructional video the provided USB memory stick nstallation and Basic Configuration
6. X2 Eye Trackers mp4 for the main setup and configuration steps to be performed when installing the X2 Eye Tracker 41 Prerequisites Before starting to mount and use your X2 Eye Tracker you need to make sure that e Your computer is compatible with the software that you are going to use Tobii Studio or other eye tracking software The latest version of the Tobii System Requirements and Recommendations document is available on the Tobii website at www tobii com e You have administrator rights for the computer that you are using in order to be able to install and run the installation and configuration software e The screen used for presenting the stimuli has a proper size and form factor to be used with the eye tracker that you have Please read Appendix B Recommended Display Sizes page 27 e You are using either Windows 7 or Windows as an operating system e firewall s that you might have on the computer allow access for the eye tracking software e You are using USB 2 0 The Tobii X2 Eye Tracker does not support the USB 3 0 e Always try out the X2 Eye Tracker before attaching it permanently to the screen in order to make sure that it works properly in conjunction to your screen 4 2 Mountingthe Eye Tracker This section describes the steps you need to perform in order to assemble and mount the Tobii X2 Eye Tracker depending on the setup type e 4 2 1 Mounting the Tobii X2 Eye Tracker
7. 4 4 Tobii Eye Tracker Installer In order to install the needed prerequisites and to configure the eye tracker for your screen you have to run the Tobii Eye Tracker Installer that you can find on the provided USB memory stick or you can download it from the Tobii website at www tobii com The X2 Eye Tracker should be mounted before running the Eye Tracker Installer but not connected to the computer Do NOT connect the Tobii X2 Eye Tracker to the computer before running the installation software provided on the USB memory stick Connecting the eye tracker prematurely can lead to software compatibility issues as the wrong drivers may then automatically be installed by Windows n If you move the eye tracker to another computer or attach it to another screen you must always run the Eye Track er Installer again to configure the eye tracker for the new setup To install the prerequisites and do basic configuration of the Tobii X2 Eye Tracker on your computer Please note that you need to have administrator rights in order to be able to install and run the software 1 Plugin the provided USB memory stick in the computer that the Tobii X2 Eye Tracker is going to be connected to 2 Runthe Setup application that you can find on the USB memory stick and follow the on screen instructions as described in the following steps Tobii X2 60 Eye TrackerUser s manual v 1 0 1 en US 4 Setting Up the X2 60 Eye
8. Fax 81 3 5793 3317 Fax 1 703 738 1313 www tobii com www tobii com www tobii com www tobii com www tobii com sales tobii com sales de tobii com sales cn tobii com sales jo tobii com sales us tobii com
9. ROHS Directive E2 FCC Declaration of Conformity This device complies with Part 15 of the FCC Rules Operation is subject to the following two conditions 1 this device may not cause harmful interference and 2 this device must accept any interference received including interference that may cause undesired operation For questions related to the EMC performance of this product contact Intel Corporation 5200 N E Elam Young Parkway Hillsboro OR 97124 1 800 628 8686 E3 Canadian Department of Communications Compliance Statement This digital apparatus does not exceed the Class B limits for radio noise emissions from digital apparatus set out in the Radio Interference Regulations of the Canadian Department of Communications E4 Japan VCCI Statement Japan VCCI Statement translation This is a Class B product based on the standard of the Voluntary Control Council for Interference from Information Technology Equipment VCCI If this is used near a radio or television receiver in a domestic environment it may cause radio interference Install and use the equipment according to the instruction manual E5 Korea Class B Statement Korea Class B Statement translation This equipment is for home use and has acquired electromagnetic conformity registration it can be used not only in residential areas but also other areas Appendix E Safety and Regulatory Information Tobii 2 60 31 Tobii X2 60 Eye TrackerUser s manual v 1
10. When activated the Tobii 2 60 Eye Tracker emits pulsed infrared IR light Certain medical devices are susceptible to disturbance by IR light and or radiation Do not use the X2 60 Eye Tracker when in the vicinity of such susceptible medical devices as their accuracy or proper functionality could be inhibited Epilepsy Warning Some people with Photosensitive Epilepsy are susceptible to epileptic seizures or loss of consciousness when exposed to certain flashing lights or light 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 games and flickering fluorescent bulbs Such people may have a seizure while watching certain images or patterns on a monitor or even when exposed to the light 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 during use move your eyes away from the eye tracker Magnetic Field Warning The X2 60 Eye Tracker Magnetic Mounting Plates contains magnets Magnetic fields may interfere with the function of cardiac pacemakers and implantable cardioverter defibrillators As a general rule maintain a minimum distance of 6
11. accept any interference received including interference that may cause undesired operation i Modifications not expressly approved by Tobii 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 digital device pursuant to part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications However there is no guarantee 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 turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures e Reorent or relocate the receiving antenna e Increase the separation between the equipment and receiver e Connect the equipment into a wall outlet on a circuit different from that to which the receiver is connected e Consult the dealer or experienced radio TV technician for assistance D2 2 Industry Canada Statement This Class B digital apparatus complies with Canadian ICES 003 Cet appareil num rique de la classe B est conforme a la norme NMB 003 du Ca
12. center of the head movement box with the participant fixed in chinrest Data is collected immediately after calibration in a controlled laboratory environment with constant illumination with 9 stimuli points at gaze angles of 20 Accuracy at ideal conditions X2 60 Compact Edition un 10 u 57 a 5 867 o 44 8 i 2 WE RM Nm E A O N V 5 Y or O Q Q Q Q Q Q Q ty ty y Accuracy Accuracy at varying distances 2 60 Compact Edition 18 1 6 a Ba m m EN EN 40cm 45cm 50cm 55cm 60cm 65cm 70 75cm 80cm 85cm 90cm Distance from eye tracker 24 Appendix A Tobii X2 60 Eye Tracker Specifications Tobii X2 60 Eye Tracker User s manual v 1 0 1 en US Table A 2 Gaze Precision Gaze precision at ideal conditions Tobii X2 60 Eye Tracker Compact Edition Binocular Monocular Artificial Eye NA NA Human Eye 0 34 0 45 Table A 3 Eye Tracking Specifications Eye Tracking Specifications Tobii X2 60 Eye Tracker Compact Edition Sampling rate 60 Hz std dev approx 0 1 Hz Total system latency lt 35 ms Time to tracking recovery For blinks immediate Head movement Freedom of head movement at 70 cm width x height 50 x 36 cm 20 x 14 Operating distance eye tracker to participant 45 90 cm 15 7 33 5
13. manual 2 2 Available Accessories To be used for transporting the eye tracker unit 2 60 Eye Tracker User Manual pdf The following accessories are available for the Tobi X2 Eye Tracker e X2 Eye Tracker laptop case Mobile Device Testing Solution for X2 e Additional Mounting Brackets e X2 Eye Tracker desk stand package X2 Eye Tracker desk stand kit Digital angle gauge Measuring tape Tobii X2 60 Eye TrackerUser s manual v 1 0 1 en US Laptop case specially designed for transporting the Tobi X2 Eye Tracker together with your laptop in one single case The Tobii Mobile Device Testing Solution enables collection of eye track ing data during natural interaction with smartphones tablet computers and other devices or objects of similar size such as books or brochures The mounting brackets package includes more adhesive mounting brack ets and enables additional ways of attaching the eye tracker to monitors and other objects The desk stand is to be used for setups where the eye tracker is not at tached to the screen where the stimuli are presented such as projection screen setups It can be mounted on a tripod For instructions on how to mount the eye tracker using the desk stand please see 4 2 2 Mounting the Tobii X2 Eye Tracker Using a Desk Stand Tripod page 7 The digital angle gauge and the measuring tape are provided for the measurements needed in t
14. pant s eye movements in real time during the test To configure this setup 1 Mount the eye tracker below the screen as instructed in 4 2 1 Mounting the Tobi X2 Eye Tracker Compact Edition to a Screen page 6 Connect the monitor to the laptop through VGA DVI 3 Connect the eye tracker to your computer via the Tobii X2 60 external processing unit as instructed in section 4 3 Connecting the Tobii X2 60 Eye Tracker external processing unit page 9 4 Eye Tracker Installer and connect the Eye Tracker to your computer For instructions please read 4 4 Tobii Eye Tracker Installer page 9 5 Run Studio configure it for showing live gaze da ta and start your test For details about configuration in Studio and further instructions on using Studio please refer to the Tobii Studio documentation available www tobii com 20 6 Typical Setups Projector P VGA DVI out Primary Screen Stimulus Presentation Projected Screen Secondary Screen Live Viewer optional a A Ee TODI Ae 90 external processing unit Computer with Tobii Studio or other supported software Tobii X2 Eye Tracker mounted on a tripod The above setup is using a projected screen for the stimuli presentation You use the laptop to present the stimuli on the screen via the projector and also as a secondary screen so that the test leader is able to see the test
15. tardus Fa Fd ARD eu bs DS OMS PIS Kd 9 4 5 Installing additional software 12 4 6 eene Moo ec 13 4 6 1 Reference Measurement Point of the Tobi X2 Eye Tracker 13 4 6 2 Setting the parameters in the X Configuration Tool sse 14 o Meme TN MF Nt 17 5 1 Freedom of Head IVOVelTieliscesns saec kh ene KORR KG ER RN RURSUM 18 UN Done AD NUM On MM EMI M MM ene UD MEME Seer M MEN OMIM RAD 19 6 1 Single Screen SEUD C tO DO Um 19 6 2 Local Lye us qnin nee ee rer 20 6 3 Fy SU NY aera cette teeta nee neater rece 21 6 4 External Video IRGC ONIN sige sortewods sez oni a a a Eaa E 22 6 5 EONS SS WO Dcos tre peat ens T zone esu exe mun dr HinIe NV dni nate M Uer Mp A DN PI MR 23 Appendix A 2 60 Eye Tracker 24 Appendix Recommended Display 27 o ol ee ee eee eee ee ee ene eee eee eee ee eee Te eee 28 Appendix D Safety and Compliance ccccceeeceeeeeeeeeeeeeeeeseeeeeeeeeeeseeeeeeeecaneeseeeeseneeaeseeeeseaeoe
16. 0 1 en US External Processing Unit tobii Tobii Support EUROPE GLOBAL NORTH AMERICA JAPAN CHINA Phone SWE 46 8 522 950 10 Phone 1 703 738 1320 Phone 81 3 5793 3316 Phone 86 180 1558 5168 Phone GER 49 69 24 75 03 4 27 support tobii com support us tobii com support jp tobii com support cn tobi com Support hours 8 am 6 pm Support hours 8 am 8 pm Support hours 9 am 5 30 pm Between July August 9am 5pm US Eastern Standard Time GMT 6 Japan Standard Time GMT 9 Central European Time GMT 1 Tobii Illustrations and specifications do not necessarily apply to products and services offered in each local market Technical specifications are subject to change without prior notice All other trademarks are the property of their respective owners Tobii Headquarters EMEA CENTRAL EUROPE CHINA JAPAN NORTH AMERICA Technology Tobii Technology GmbH Tobii China Sales Office Tobii Technology Japan Ltd Tobii Technology Inc Karlsrov gen 2D Niedenau 45 Room E2 29 F 3 4 13 Takanawa Minato ku 510 N Washington Street Suite 200 S 182 53 Danderyd D 60325 Frankfurt am Main Shanghai Industrial Investment Building Tokyo 108 0074 Fall Church VA 22046 Sweden Germany No 18 Caoxi North Road Japan USA Shanghai China Toll Free 1 888 898 6244 Phone 46 8 663 69 90 Phone 49 69 24 75 03 40 Mobile 86 180 1558 6966 Phone 81 3 5793 3316 Phone 1 703 738 1300 Fax 46 8 30 14 00 Fax 49 69 24 75 03 429
17. Compact Edition to a Screen page 6 e 4 2 2 Mounting the Tobii X2 Eye Tracker Using a Desk Stand Tripod page 7 Tobii X2 60 Eye TrackerUser s manual v 1 0 1 en US 4 Setting Up the X2 60 Eye Tracker 5 4 2 1 Mounting the Tobii X2 Eye Tracker Compact Edition to a Screen For mounting the Tobii X2 Eye Tracker Compact Edition to a laptop or monitor you use one of the adhesive mounting brackets provided in the standard package 1 Choose one of the three mounting bracket types provided in the X2 Eye Tracker package according to the type of the screen that you are going to connect the eye tracker to see illustrative pic ture on the right Try out the mounting bracket on the screen to see which bracket works for your screen Make sure that the area where the Tobii X2 Eye Tracker is going to be mounted is free from dust and dirt If you clean it using a wet wipe make sure that the area is completely dry before proceeding with the next step Measure and locate the middle of the bottom frame of the screen You will use this as a reference when positioning the mounting bracket step 5 Peel off the adhesive tape on the back of the mounting bracket ih Please be aware that the adhesive tape on the back of the mounting bracket is permanent meaning that once you at tach it to your screen you won t be able to remove tt Use other non permanent double sided tape for non per manent mounting Position the mounting
18. Tracker 9 10 When you start the Tobii Eye Tracker Installer it opens with a Welcome screen In order to be able to continue with the in stallation you need to confirm that you acknowledge and agree to the conditions of the end user license agreement by checking the tick box Tobii Eye Tracker Installe Welcome Welcome This installation guide will install device drivers and software for your Tobii eye tracker and help you configure your Tobii eye tracker for use on this computer 7 I have read and accept the terms and conditions of the end user licence agreement Click the Start button You will be directed to the Firmware and Drivers screen Please wait while the needed drivers and firmware are being installed You can see the status on the screen E Tobii Eye Tracker Installer E Welcome Firmware amp Drivers LL Firmware amp Drivers Installing device drivers and software for your Tobii eye tracker o Installing device drivers done Finished o Installing Bonjour done Finished Next When all the software is successfully installed click the Next button You will be directed to the Select Eye Tracker Screen Connect the Tobii X2 Eye Tracker to your computer by using the provided USB cable Use an USB extension cable if needed If you are using a X2 60 Eye Tracker with an external processing unit you need to connect the eye tracker to th
19. User s Manual X2 60 Eye Tracker X2 60 Eye Tracker User s manual Version 1 0 1 09 2013 All rights reserved Technology The information contained in this document is proprietary to Technology Any reproduction in part or whole without prior written authorization by Technology is prohibited Products that are referred to in this document may be either trademarks and or registered trademarks of the respective owners The publisher and the author make no claim to these trademarks While every precaution has been taken in the preparation of this document the publisher and the author assume no responsibility for errors or omissions or for damages resulting from the use of information contained in this document or from the use of programs and source code that may accompany it In no event shall the publisher and the author be liable for any loss of profit or any other commercial damage caused or alleged to have been caused directly or indirectly by this document Content subject to change without notice Please check web site www tobii com for updated versions of this document Table of Contents 1 1 1 UOC TION MC HTH H 1 1 1 1 S T 1 1 1 2 Basic Operating RU ENS 1
20. acker mounted on a tripod is described in section 6 3 Physical Object Setup page 21 To mount the X2 Eye Tracker on the desk stand 1 Peel off the adhesive tape on the back of the mounting bracket Please be aware that the adhesive tape on the back of the mounting bracket is permanent meaning that once you at tach it to the desk stand you won t be able to remove it Use other non permanent double sided tape for non per manent mounting 2 Attach the mounting bracket to the desk stand by fitting the upper part of the mounting bracket in the special slot of the desk stand as illustrated in the figure n Please note that the desk stand is made out of bendable metal You can attach the mounting bracket on any of the sides of the desk stand and bend it accordingly Tobii X2 60 Eye TrackerUser s manual v 1 0 1 en US 4 Setting Up the X2 60 Eye Tracker 7 3 Position the X2 Eye Tracker and attach it to the mounting bracket Make sure to position it in the right way so that the mount ing bracket fits exactly in its slot on the back of the eye tracker 4 The desk stand is made out of bendable metal You can change the tilt angle of the eye tracker by bending the desk stand firmly by hand Remove the eye tracker before bending the desk stand 1 Please note that when you use setup where eye tracker is not mounted on screen used for presenting the stimuli you nee
21. age sensors Sophisti cated image processing algorithms identify relevant features including the eyes and the corneal reflection patterns Complex mathematics is used to calculate the 3D position of each eyeball and finally the gaze point in other words where the participant is looking Tobii Eye Trackers are designed for use in indoor office environments Tobii X2 60 Eye TrackerUser s manual v 1 0 1 en US 1 Introduction 1 2 Hardware Package Content 2 1 Standard Package The standard X2 60 Eye Tracker package contains the following main parts ar e X2 60 Eye Tracker Compact Edition e Adhesive mounting bracket kit each kit contains 3 mount ing brackets for different screen depths for permanent installation e USBextension cable e X2 60 Eye Tracker USB memory stick containing the C Tobii Eye Tracker Installer e 2 60 Eye Tracker external processing unit It comes together with Power Supply PSU cable EU PSUcable US PSUcable UK 2 Trendnet Adapter Ethernet cable e Safety and Compliance paper please read this before starting to use the X2 Eye Tracker 2 2 Hardware Package Content Tobii X2 60 Eye Tracker User s manual v 1 0 1 en US Installation Guide Illustrated mounting instructions for a attaching the eye tracker screen e Zipper bag X2 60 Eye Tracker user
22. bracket on the bottom frame of your screen Make sure that it is centered exactly in the middle point of the screen bottom frame as shown in the picture 4 Setting Up the Tobii X2 60 Eye Tracker leet SSS ITA lt lt Tobii X2 60 Eye Tracker User s manual v 1 0 1 en US 6 Apply pressure to the mounting bracket for 30 seconds to make sure it gets attached to the screen 7 Allow one hour for the adhesive on the mounting bracket to cure and become permanently attached to the screen before attaching the eye tracker unit 8 Position the X2 Eye Tracker and attach it to the mounting bracket as shown in the figure to the right Make sure to position it in the right way so that the mounting bracket fits exactly in the slot on the back of the eye tracker The magnet inside will keep the eye tracker in place Do NOT connect the Tobii X2 Eye Tracker to the computer before running the installation software provided on the USB memory stick Connecting the eye tracker prematurely can lead to the eye tracker not being installed properly 4 2 2 Mounting the X2 Eye Tracker Using a Desk Stand Tripod A desk stand is available as an accessory for the Tobi X2 Eye Trackers and it is to be used for setups where the eye tracker is not attached to the screen where the stimuli are presented such as projection screen setups It can be mounted a tripod A typical setup using the Tobii X2 Eye Tr
23. cVe antur weal desi EDU EE MR a E REEL FE DEM E RUE 31 1 Introduction 1 1 Introduction 1 1 1 Overview This document describes the features and functionality of the 2 60 Eye Tracker The X2 Eye Tracker is a stand alone eye tracker that can be used in various setups by attaching it to monitors laptops or for performing eye tracking on physical objects The eye tracker requires some assembly before first time use and after transport The Tobii X2 Eye Tracker is an unobtrusive eye tracker for detailed research of natural behavior Its large freedom of head move ment allows the participant to move during recording while maintaining accuracy and precision The Tobii X2 Eye Trackers offer maximum flexibility with numerous software and stimuli setup options The 2 60 is a small eye trackers measuring only 184 mm 7 2 in length It enables your portable eye tracking lab and studies that require an eye tracker to track even large objects at close distances up to 36 gaze angle Use the eye trackers to conduct studies on e Laptops e monitors up to app 25 16 9 e Mobile devices e Real world interfaces e Projections simulators e TV screens 1 1 2 Basic Operating Principles During tracking Eye Trackers use infrared illuminators to generate reflection patterns on the corneas of the participant s eyes These reflection patterns together with other visual data about the participant are collected by im
24. ck different sizes of displays If the display is positioned further away from the user a larger area can be tracked However small objects shown on the display might be difficult to see for the user at a greater distance Another aspect to consider is the aspect ratio of the display Since the optimally tracked area is a half circle the eye tracker can track displays with a large width to height ratio better than displays where this ratio is small The display sizes below have been calculated to be within 36 gaze angle and is therefore suitable for use with the Tobii X2 Eye Tracker It might be possible for some users to use larger displays than the ones given below but that will be at the user s own risk of not being able to collect eye tracking data in the top corners of the display Aspect ratio Maximum display size Tobii X2 Eye Tracker Compact Edition 16 9 25 16 10 24 4 3 22 0 4 22 The display sizes above are based on tests on participants without vision aids such as lenses glasses in normal office lighting without any interfering light sources such as windows or near infrared light emitting lamps For participants with glasses lenses or other characteristics that might interfere with trackability for example droopy eyelids extensive use of mascara or environment with interfering light sources the trackability in the top corners of the display might be lower than for the conditions tes
25. cker page 13 Measure the height difference between the measuring point on the eye tracker and the bottom of the active display area If the active display is located below the measuring point on the eye tracker for example in a projector setup the value will be negative Enter the value in the X Configuration Tool with a in front to signify it as a negative value D distance between the measuring point of the eye tracker read 4 6 1 Reference Measurement Point of the Tobii X2 Eye Tracker page 13 and the display Measure the distance from the measuring point on the Tobii X2 Eye Track er to the front of the active display on the monitor projection screen TV screen or in a scene camera setup to the Tobii X2 60 Eye TrackerUser s manual v 1 0 1 en US 4 Setting Up the Tobii 2 60 Eye Tracker 15 16 virtual screen If the measuring point on the eye tracker is located behind the active display enter a negative distance use in front of the value n Always make sure that the distance to the active display is long enough for the eye tracker to track the en tire area Please read section 5 Positioning page 1 7 e Use Side Offset If the Eye Tracker is not placed right in front of the screen with the axis horizontally aligned an offset can be entered in the X Configuration Tool In this case a Check the Use Side Offset tick box The upper right area of the X Configuration Tool window becomes active b Enter
26. d to run the X Configuration Tool to configure the corresponding distances and angles Please read section 4 6 The X Configuration Tool page 13 8 4 Setting Up Tobii 2 60 Eye Tracker Tobii X2 60 Eye Tracker User s manual v 1 0 1 en US 4 3 Connecting the Tobii X2 60 Eye Tracker external processing unit The 2 60 Eye Tracker is shipped together with an external processing unit see 2 Hardware Package Content page 2 In order to be able to start using your eye tracker after mounting the X2 Eye Tracker to a screen or according to your setup type you have to connect it to your computer the X2 60 Eye Tracker External Processing Unit To connect the 2 60 Eye Tracker to your computer via the external processing unit 1 Connect the X2 Eye Tracker to the external processing unit via USB 2 Connect the external processing unit to the computer via LAN using the provided Ethernet cable 3 Plugin the external processing unit to a power source 100 240 Vac using the suitable provided power adapter 4 Turn on the external processing unit by pressing the power button The figure below shows an example of a simple setup for illustrating how the 2 60 Eye Tracker external processing unit Is connected Primary Screen Stimulus presentation VGA DVI out Tobii X2 60 LAN Eye Tracker external processing unit Computer with Tobii Studio or other supported software
27. dius of that half circle it is possible to calculate the distance needed between the participant and the stimuli using the following formula 5 tan a Tobii X2 60 Eye TrackerUser s manual v 1 0 1 en US 5 Positioning 17 center of the screen or other stimuli to one of the upper corners Distance from participant to screen or other stimuli If you place the test participant farther away from the object you can track larger objects if you place the test participant closer to the object you can track smaller objects If you place a test participant at 65 cm 26 you can track a 25 16 9 monitor Re gardless of the distance to the object the eye tracker should always be placed approximately 65 cm 26 from the participant For more information about supported monitor sizes please see Appendix B Recommended Display Sizes page 27 51 Freedom of Head Movement The Tobii X2 Eye Tracker allows for extensive head movement Once the Tobii X2 Eye Tracker is properly calibrated and placed in front of the user no further adjustments are required The Tobii X2 Eye Tracker allows for head movements of 50 x 36 cm 20 x 14 Width x Height at the distance of 70 cm 27 5 from the eye tracker Depending on factors such as droopy eyelids visual aids and other characteristics of the eye the optimal distance between the participant and the eye tracker varies The typical tracking distance limit from the center of the eye tracker is 45 90 c
28. e Tobii 2 60 Eye Tracker should be mounted according to MANUFACTURER iinstructions of approved mounts or its agents are not liable for damage or injuries to a person or its property due to a 2 60 Eye Tracker falling from a mounted configuration The mounting of a X2 60 Eye Tracker is done entirely at the user s own risk The double sided tape supplied with the adhesive Magnetic Mounting Plates is designed to permanently attach the bracket to the monitor laptop Attempting to remove the bracket after attaching it using the supplied tape can result in damage both to the monitor laptop and the bracket Do not lick the tape or place any part of the tape or Magnetic Mounting Plate in one s mouth Do not mount the Tobi X2 60 Eye Tracker on monitors positioned above the head or face of a users unless using dedicated fixed mounting solution Emergency Warning Be aware that due to the low but possible risk of failure the Tobii 2 60 Eye Tracker should not be relied upon exclusively as an audio communications or an environmental control device in emergencies as well as in dangerous or otherwise important situations Do not rely on the device for emergency calls or banking transactions We recommend having multiple ways to communicate in emergency situations Banking transactions should only be carried out with a system recommended by and approved according to the standards of your bank Infrared Warning
29. e computer via the external processing unit by using an Ethernet cable Click to select your Tobii X2 Eye Tracker from the list of the discovered Tobii Eye Trackers in the Tobii Eye Tracker Instal ler window 4 Setting Up Tobii 2 60 Eye Tracker Tobii X2 60 Eye Tracker User s manual v 1 0 1 en US Tobi Eye Tracker Installe Welcome Firmware amp Drivers Select Eye Tracker H HHHESES Select Eye Tracker Please connect the eye tracker to the computer now if you have not already done so Searching for eye tracker done Select the eye tracker to be used X2 30 Compact X230C 010103004543 8 Click the Next button You will be directed to the Select Display Monitor screen Specify on which of the screens connected to your computer the Tobii X2 eye tracker is mounted If you are unsure which screen is the one that the eye tracker is attached to click the Identify button You will see a number displayed on each screen so that you can identify it Eye Trac Welcome Firmware amp Drivers Select Eye Tracker Select Display Monitor FE Select Display Monitor o Select display monitor Select the monitor where the eye tracker is mounted Identify 10 Click the Next button You will be directed to the Map to Display Monitor screen In the following steps you will configure where the eye tracker is positioned relative to the active di
30. en as instructed in 4 2 1 Mounting the Tobii X2 Eye Tracker Compact Edition to a Screen Connect the eye tracker to your computer the X2 60 external processing unit as instructed in section 4 3 Con necting the X2 60 Eye Tracker external processing unit page 9 Run the Tobii Eye Tracker Installer and connect the Eye Tracker to your computer For instructions please read 4 4 Eye Tracker Installer Run Tobii Studio and start your test For details about how to connect the eye tracker in Tobii Studio and further instruc tions on using Tobii Studio please refer to the Tobii Studio documentation available on www tobii com Tobii X2 60 Eye TrackerUser s manual v 1 0 1 en US 6 Typical Setups 19 6 2 Local Live Viewer Setups These setups are used when the test is to be supervised from a separate screen where the test leader can see the test partici pant s eye movements in real time during testing The following image illustrates two typical setups using the Live Viewer Primary Screen Stimulus presentation Secondary Screen Live Viewer optional Tobii X2 60 Eye Tracker external processing unit Computer with Tobii Studio or other supported software The above setup Is a simple setup with the eye tracker mounted on a monitor where the stimuli will be presented connected to a laptop running Tobii Studio that will be used as a secondary screen by the test leader to see the test partici
31. he Tobii Studio documentation available on www tobii com 6 4 External Video Stimulus Recording The stimulus presented on the screen is generated by an external device such as a DVD player computer or gaming console This setup is suitable when using Eye Tracking system for eye tracking data analysis when the stimulus is presented from a separate computer or other RGB VGA sources This could include a computer game a DVD player or when stimulus is pre sented on a computer running a different operating system The computer running Tobii Studio must be equipped with an addi tional video capture card 1 Note that if the external application runs on the Windows operating system and it does not use 3D graphics accelera tion or it does not have a high processor load and high memory usage it may be more suitable and less complex to run this on the same computer as Studio and use the Screen Recording option in Studio instead For this setup the image from the Tobii Studio computer has to be displayed on the screen during calibration to display the cali bration points The external stimulus computer however should be shown on the screen during the actual test Both devices 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 image shown on the screen must be sent to Tobii Studio to record the video stream and synchronize
32. hese kind of setups Please read 4 6 The X Configuration Tool page 13 2 Hardware Package Content 3 3 Product Care 31 Temperature amp Humidity 3 1 1 General use The Tobii X2 Eye Tracker is best kept in dry conditions at room temperature The recommended range for temperature and the humidity value for the device is as follows e Temperature 0 C to 40 C 32 F to 104 F e Humidity Max 70 no condensation on the device 3 1 2 Transportation and storage For transportation and storage the recommended range for temperature and the humidity value for the device is as follows e Temperature 40 C to 70 C 40 F to 158 F e Humidity 20 to 70 no condensation on the device The Tobii X2 Eye Tracker is not waterproof or water resistant The device should not be kept in excessively humid damp or wet conditions Do not submerge the device in water or in any other liquid Be careful not to allow liquids to be spilled upon the device 3 2 Cleaning Before cleaning the Tobii X2 Eye Tracker device shut down the computer to which it is attached and unplug all cables Use a soft slightly damp lint free cloth Avoid getting moisture in openings on the device Don t use window cleaners household cleaners aerosol sprays solvents alcohol ammonia or abrasives to clean the device 1 Please be aware that scratches on the front surface of the eye tracker may result in impaired eye tracking performances 3 3 Transporting
33. ill get back to the Map to Display Monitor screen of the Eye Tracker Installer 13 Click Next You will get a notification message that your system is ready for eye tracking 14 Click Exit or close the Tobii Eye Tracker Installer window to exit the application 4 5 Installing additional software After installing and setting up the eye tracker you need to install other software that you intend to use such as Tobii Studio or To bii SDK Please see the respective software user manuals for detailed instructions 12 4 Setting Up Tobii 2 60 Eye Tracker Tobii X2 60 Eye Tracker User s manual v 1 0 1 en US 46 The X Configuration Tool The X2 Eye Tracker can be used in many different setups For example it can be used to perform eye tracking relative to a physical scene a TV or a projection screen For all this to work the user must provide some information to the Tobi X2 eye tracker about the physical setup This is done using the X Configuration tool The X Configuration Tool can be accessed via the Eye Tracker Browser software To install the Eye Tracker Browser 1 Plugin the provided USB memory stick and run the Eye Tracker Browser installer 2 Follow the on screen instructional steps to complete the installation To access the X Configuration Tool 1 Open the Eye Tracker Browser Start gt Programs gt Tobii gt Tobii Eye Tracker Browser When the Eye Tracker Browser opens a list of the discovered e
34. inches 15 centimeters between any item with magnets and your heart device The magnets can also shut off the monitor on a laptop if the laptop is equipped with a magnetic sensor to switch off the monitor when closing the laptop If this happens shut of the sensor on the laptop Tobii X2 60 Eye TrackerUser s manual v 1 0 1 en US Appendix D Safety and Compliance 29 D1 6 Child Safety The 2 60 Eye Tracker 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 being separated from the device possibly constituting a choking hazard or another danger to the child Young children should not have access to or the use of the device without parental or guardian supervision D1 7 Do not Open the Tobii X2 60 Eye Tracker Non compliance will result in loss of Warranty There are no user serviceable components inside Contact AN technical support if your X2 60 Eye Tracker is not working properly D2 Compliance Information C All 2 60 Eye Tracker are CE marked indicating compliance with the essential health and safety requirements set out in European Directives D2 1 FCC Statement This device complies with Part 15 of the FCC Rules Operation is subject to the following two conditions 1 this device may not cause harmful interference and 2 this device must
35. it with the gaze data If the stimulus is presented from an analogue video source e g a VCR or an analogue video camera a similar set up with slightly modified components can be used Primary Screen Stimulus DVD player computer presentation gaming console NES e Video capture Video captureN VGA DVI card out Tobii X2 60 LAN Eye Tracker external processing unit Secondary Screen Live Viewer optional VGA DVI out Computer with Tobii Studio or other supported software To configure this type of setup 1 Mount the eye tracker on the screen as instructed in 4 2 1 Mounting the Tobii X2 Eye Tracker Compact Edition to a Screen page 6 2 Connect the eye tracker to the eye tracking computer via the Tobii X2 60 external processing unit as instructed in sec tion 4 3 Connecting the Tobii X2 60 Eye Tracker external processing unit page 9 Connect the screens to the computer via VGA DVI Connect your external device used for generating the stimuli DVD player gaming console etc to the video capture card attached to the eye tracking computer and to the primary screen that is used for stimuli presentation 5 Run Tobit Eye Tracker Installer and connect the Eye Tracker to your computer For instructions please read 4 4 Eye Tracker Installer page 9 6 When positioning the participant in front of the eye tracker make sure to take into consideration the guidelines in section 5 Positioni
36. ized with the gaze data The image or video recording is done via a video capture card installed on the Tobii Studio computer As a result the display output of the E Prime needs to be split in two connections one to the eye tracker s display and another to the video capture computer card on the computer running Tobii Sudio LAN Network Router LAN E UL X2 60 Eye Tracker external processing unit LAN 1 Primary Screen Stimulus USB Secondary Screen Secondary Screen Tee Live Viewer optional presentation optional DV 2 NS VGA DVI pnt SS VGA DVI VGA DVI VGA DVI c3 s Video capture 5 o o VGA DVI Switch card card Computer with VGA DVI Splitter VGA DVI Computer with E Prime Tobii Studio Tobii X2 60 Eye TrackerUser s manual v 1 0 1 en US 6 Typical Setups 23 AppendixA 2 60 Eye Tracker Specifications Table A 1 Gaze Accuracy Tobii X2 60 Eye Tracker Compact Edition firmware version Gaze accuracy 1 0 5 Binocular Monocular At ideal conditions 0 4 0 4 At 25 gaze angle 0 4 0 5 At 30 gaze angle 0 4 0 5 At 1 lux 1 2 1 9 At 300 lux 0 4 0 4 At 600 lux 0 4 0 6 At 1000 lux 0 6 0 9 White stimuli background 1 2 1 9 1 Accuracy under ideal conditions is measured in the
37. m 15 7 33 5 for the Tobii X2 Eye Tracker In order to be tracked properly the participant that is being eye tracked needs to have at least one eye in the track box at all times 18 5 Positioning Tobii X2 60 Eye Tracker User s manual v 1 0 1 en US 6 Typical Setups This section describes the typical setup configurations that can be used with the X2 60 Eye Trackers and Studio or other supported software For specific information about custom configurations or system requirements and recommendations please contact your Tobii sales representative or Tobii technical support The System Requirements and Recommendations can be downloaded at www tobii com 6 1 Single Screen Setup This is the simplest setup when using on screen stimuli such as images movies or web To record the participant s reactions the conversation between the test leader and the test participant you need to connect an external user camera and microphone to the computer running Tobii Studio The setups illustrated below do not include the user camera and user sound The eye tracker is directly connected to the computer via USB You can use either a laptop or a desktop computer for this setup VGA DVI out Primary Screen Stimulus presentation Tobii X2 60 LAN Eye Tracker external processing unit Computer with Tobii Studio or other supported software To configure this setup 1 Mount the eye tracker below the scre
38. nada D2 3 Standards The X2 60 Eye Tracker complies with the following standards e EC EN62471 Photobiological Safety of Lamps and Lamp Systems e EMC Emission EN 61000 6 3 2001 including EN 55022 1998 A1 A2 Class B FCC part 15 Class B e EMC Immunity EN 61000 6 1 2007 e FCC part 15 Class B 30 Appendix D Safety and Compliance Tobii X2 60 Eye Tracker User s manual v 1 0 1 en US Appendix E Safety and Regulatory Information Tobii 2 60 External Processing Unit Risk of explosion if the battery is replaced with an incorrect type Batteries should be recycled where possible Disposal of used batteries must be in accordance with local environmental regulations requirements and may expose the user to safety hazards Modification of the wireless antennas thermal solution or enclosure may violate regulatory compliance requirements o Failure to use the included FSP Group Inc Model 5 65 Power Adapter may violate regulatory compliance o and may expose the user to safety hazards E1 European Union Declaration of Conformity Statement The product is properly CE marked demonstrating this conformity and is for distribution within all member states of the EU with no restrictions The device is in conformity with all applicable essential requirements necessary for CE marking following the provisions of the European Council Directive 2004 108 EC EMC Directive 2006 95 EC Low Voltage Directive and 2002 95 EC
39. ng 7 Studio and start your test by performing the calibration For details about how to connect the eye tracker in To bii Studio and further instructions on using Tobii Studio please refer to the Tobii Studio documentation available on www tobii com 22 6 Typical Setups Tobii X2 60 Eye Tracker User s manual v 1 0 1 en US 8 Switch the input source of the primary screen used for stimulus presentation to the external device used for generating the stimuli DVD player gaming console etc 65 E prime Setup The setup described in this section is two computers setup using Tobii Studio to record the gaze data and E Prime to present the stimulus The E Prime software and Tobii Studio software are run on two different computers and communicate with the Eye Tracker as well as between each other over LAN network The image from the Tobii Studio computer has to be displayed on the stimulus display during calibration to display the calibra tion points whereas the E Prime computer should be shown on the stimulus display during the actual test Therefore both computers have to be connected to the stimulus display Two secondary screens can be added to the setup to enable the eye tracker operator to monitor the progress of the trial during the stimulus presentation and recording The image or video presented by on the eye tracker s display also has to be recorded by Studio and synchron
40. on t already have one create calibration grid The calibration grid must have the same shape as the calibration pattern used in Tobii Studio and include either five or nine points The calibration points can be drawn on a paper marked on a calibration board or marked on objects in the scene Make sure that the corners of the calibration grid are exactly 90 degrees and that the center point is exactly in the middle of the grid It is also good to include the 2590 larger Active Display Area around the grid to make it easier to measure the parameters required in the X Configuration Tool see the next step 6 Runthe X Configuration Tool in order to configure the eye tracker for your particular setup Please read 4 6 The X Con figuration Tool page 13 How to calculate the 2590 larger Active Display Area which needs to be added in the X Config uration Tool is described below e Active Display Area Height 1 25 x Calibration grid height e Active Display Area Width 1 25 x Calibration grid width mM Width Width x 1 25 mH y Height Height 1 25 gt 50 NERA Tb Calibration grid P9 Virtual screen 25 larger Tobii X2 60 Eye TrackerUser s manual v 1 0 1 en US 6 Typical Setups 21 7 Studio and start your test For details about how to connect the eye tracker in Tobii Studio and further instruc tions on using Tobii Studio please refer to t
41. ositioning The distance from the participant s eyes to the eye tracker should be approximately 60 65 cm 23 26 for best performance However the eye tracker can still track eye movements as long as the participant stays within the distance interval from the eye tracker mentioned below If the eye tracker is too close or too far away from the participant there is a risk of losing some of the gaze data When the Tobii X2 Eye Tracker is used in a setup where it is not attached to a screen it should be placed below the monitor or below the surface that is to be used for presenting the stimuli without covering the bottom of the display area for the participant watching the stimuli For optimal tracking the eye tracker should be placed so that the gaze angle o illustrated below will not exceed the 36 for Tobii X2 Compact Edition when the participant is located 65 cm 26 from the eye tracker It is very important to have the correct distance to the monitor or the tracked object Otherwise the eye tracker cannot track the entire area If the monitor or object is placed too close to the participant there is a risk that the gaze data for the corners of the display area of the monitor will not be collected The correct distance can be calculated by using basic trigonometry see image below By assuming that the tracked area is a half circle and that the diagonal from the center of the screen or other stimuli to its top corner constitutes the ra
42. participant s eye movements in real time during the test To configure this setup 1 Mount the eye tracker on a tripod using the supplied desk stand as instructed in 4 2 2 Mounting the Tobii X2 Eye Tracker Using a Desk Stand Tripod page 7 Connect the eye tracker to the laptop via USB Connect the projector to the laptop via VGA DVI Connect the eye tracker to your computer via the X2 60 external processing unit as instructed in section 4 3 Connecting the Tobii X2 60 Eye Tracker external processing unit page 9 5 Position the eye tracker taking into consideration the guidelines in 5 Positioning page 17 Always make sure the eye tracker is able to track the eyes over the entire screen by using the correct distance to the screen and the correct tilt angle of the eye tracker 6 Runthe X Configuration Tool in order to configure the eye tracker for your particular setup Please read 4 6 The X Configuration Tool page 13 7 Run Tobii Studio configure it for showing live gaze da ta and start your test For details about configuration in Tobii Studio and further instructions on using Tobii Studio please refer to the Tobii Studio documentation available www tobii com Tobii X2 60 Eye Tracker User s manual v 1 0 1 en US 6 3 Physical Object Setup Real objects such as magazines or mobile devices can be used as stimuli in a scene camera setup where a video camera is film ing the object during the recording In
43. s 29 D1 eciam m 29 D1 1 Mounting Bi re m 29 D1 2 Emergency eripere pers MR BUDE ME MIN DEN RUM Rue 29 D1 3 Infrared Warning 29 D1 4 EDIIBDSy NRI IUE EIU 29 01 5 Magnetic Field Warning 29 D1 6 Sulebo c 30 D1 7 Do not Open the Tobii 2 60 Eye Tracker sse mm 30 D2 Compliance IMIOnMN AU OM T 30 D2 1 ge erc RE E 4 30 D2 2 Industry Canada Statement cc nenne nennen nenne mener 30 D2 3 T S 30 Appendix Safety and Regulatory Information X2 60 External Processing Unit 31 E1 European Union Declaration of Conformity 31 E2 FCC Declaration of Conformity DR NM FE SEN EnEn Ene 31 Canadian Department of Communications Compliance 31 E4 Japan VOCI Statement aiiora e MEM EE 31 E5 Korea Class B Statement ise o ov Retro EC tied gu
44. s maintained approximately the same head position during the blink Data during blinks are only lost when the pupil is occluded i e during the eyelid movement itself or when the eye is closed An eye tracker working in a natural user environment may occasionally lose track of the participant s eyes e g when the participant completely turns away from the tracker If a period of a few hundred milliseconds elapses during which the eye tracker is unable to detect the eyes in close proximity to where they were last detected the eye tracker will start searching for the eyes within the entire head movement box The stated measurement is the typical time to tracking 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 leading to larger recovery times Describes an area width x height in cm where at least one eye is within the eye tracker s field of view Describes the range of distances minimum and maximum between the participant s eyes and the surface covering the eye tracker sensors at which eye tracking can be done while maintaining tracking Gaze data calculations are performed by firmware embedded in the eye tracker or in a separate processing unit Tobii X2 60 Eye Tracker User s manual v 1 0 1 en US Appendix D Safety and Compliance D1 D1 1 D1 2 D1 3 D1 4 D1 5 Safety Mounting Warning Th
45. splay area of the screen Tobii X2 60 Eye TrackerUser s manual v 1 0 1 en US 4 Setting Up X2 60 Eye Tracker 11 7 Tobii Eye Tracker Installer Welcome Firmware amp Drivers Select Eye Tracker Select Display Monitor Map to Display Monitor ADJ J p X n sinter Map to Display Monitor o Map the eye tracker to the display monitor Specify where and how the eye tracker is mounted on the display monitor to ensure a correct mapping between the tracked eye gaze point and the visual content on the monitor Note this will open a new window Start mapping 11 Click the Start mapping button The mapping screen will be displayed on the monitor the eye tracker is attached to the monitor you previously selected in step 9 12 Drag the handles on the dotted lines to align them with the mounted X2 Eye Tracker e forthe X2 Eye Tracker Compact Edition align the dotted lines with the margins of the eye tracker es gt it Ci S Align the two lines with the edges of the eye tracker by dragging them with the mouse Imdone 1 It is very important to be as careful and precise as possible when performing this step because wrongly per formed configuration may result in offsets in the eye tracking data When you have finished aligning click the l m done button You w
46. ted here Tobii X2 60 Eye TrackerUser s manual v 1 0 1 en US Appendix B Recommended Display Sizes 27 Appendix C Glossary Monocular binocular Gaze precision Gaze accuracy Sampling rate Total system latency Time to tracking recovery for blinks Time to tracking recovery after lost tracking Freedom of head movement Operating distance Eye tracking processing unit 28 Appendix C Glossary Monocular data shown is based on data from the participant s dominant eye only Binocular data is the average of the two eyes Describes the spatial angular variation between a set of consecutive gaze samples Gaze precision can be measured under various conditions Describes the angular average distance from the actual gaze point to the one measured by the eye tracker Gaze accuracy can be measured under various conditions Number of eye tracking data samples per second The duration from mid point of the eye image exposure to when a sample is available via the API on the client computer This includes half of the image exposure time plus image read out and transfer time processing time and time to transfer the data sample to a client computer When a participant blinks the eye tracker loses the ability to track eye gaze because the eye is covered by the eyelid If the pupil is occluded for only a short period the system will regain tracking immediately when the pupil becomes visible again but only if the participant ha
47. the side offset value measured from the center of the active display to the center of the eye tracker Enter a negative value if the eye tracker is located to the left of the center as seen from the front e Use Rotation If the eye tracker is not placed parallel with the display or tracked object a Check the Use Rotation tick box The bottom right area of the X Configuration Tool window becomes active b Enterthe value of the angle between the back of the eye tracker and the active display If the eye tracker is ro tated clockwise enter a negative value Save to Eye Tracker Once you have entered all the needed parameters corresponding to your setup you must click oave to Eye Tracker in order to start using this configuration The parameters will then be sent to the eye tracker and the eye tracker will immediately be properly configured When you change any parameter value in the tool the button must be pressed again for the eye tracker to get the new settings You also have the option of saving the configuration as an xcfg file by clicking the Save to File button and setting the name and location of the file Click Load from File to load a previously saved xcfg configuration file This is useful if you want to save a particular configuration of a setup to be able to reuse it at a later point in time or from another computer 4 Setting Up Tobii 2 60 Eye Tracker Tobii X2 60 Eye Tracker User s manual v 1 0 1 en US 5 P
48. this setup the calibration points cannot be displayed on a screen during the calibration thus a separate calibration grid must be used The grid can be drawn on a paper and include five or nine points The object you intend to track should fit within an area which is 2590 larger than the actual calibration grid Always make sure that the eye tracker is able to track the person s eyes over the entire calibration grid During the calibration procedure the person is asked to look at the corresponding points in the grid Video Camera Calibration Grid AR B AN Ee d Tobii X2 Eye Tracker Eye Tracker gt mounted on a tripod external processing unit Computer with Tobii Studio or other supported software To configure this setup 1 Mount the eye tracker on a tripod using the supplied desk stand as instructed in 4 2 2 Mounting the X2 Eye Tracker Using a Desk Stand Tripod page 7 2 Connect the eye tracker to your computer via the Tobii X2 60 external processing unit as instructed in section 4 8 Con necting the X2 60 Eye Tracker external processing unit page 9 Connect the scene camera to the computer Position the eye tracker taking into consideration the guidelines in 5 Positioning page 1 7 Always make sure the eye tracker is able to track the eyes over the entire screen by using the correct distance to the screen and the correct tilt an gle of the eye tracker 5 If you d
49. ye Tracker Compact Edition Hardware Package Installation Guide Mounting tape kit USB extension cable Zipper bag Tobii X2 60 Eye Tracker USB memory stick containing the Tobii Eye Tracker Installer Tobii X2 60 Eye Tracker user manual pdf X2 60 Eye Tracker external processing unit Table A 7 Accessories Tobii X2 60 Eye Tracker Compact Edition X2 Eye Tracker laptop case Mobile Device Stand for X2 Additional Mounting Brackets X2 Eye Tracker desk stand package e X2 Eye Tracker desk stand kit e Digital angle gauge e Measuring tape 26 Appendix A Tobii 2 60 Eye Tracker Specifications X2 60 Eye Tracker User s manual v 1 0 1 en US AppendixB Recommended Display Sizes The eye tracker can only do accurate eye tracking of a person s eyes If the visual angle as seen from the person s eyes does not exceed 36 for the Compact Edition between the center of the eye tracker and any point on what the person is looking at This is valid as long as the person stays within the area in front of the eye tracker defined as the freedom of head movement which is roughly between 45 90 cm for the Tobii X2 Eye Tracker from the center of the eye tracker when seen from the side read more about this ind Positioning page 1 7 This means that depending on the position of the eye tracker in relation to the display it can tra
50. ye trackers is displayed 2 Select your Tobii X2 Eye Tracker from the list and click the Config Tool button The X Configuration Tool opens 4 6 1 Reference Measurement Point of the X2 Eye Tracker All distance measurements must be performed from the same reference point on the eye tracker This is marked with a line on the upper side of the eye tracker as illustrated in the pictures below The image below illustrates the reference measurement point of the Tobii X2 Eye Tracker Compact Edition as seen from the front I j j The image below illustrates the reference measurement point of the X2 Eye Tracker as seen from side Tobii X2 60 Eye TrackerUser s manual v 1 0 1 en US 4 Setting Up the Tobii 2 60 Eye Tracker 13 4 6 2 oetting the parameters in the X Configuration Tool When using the X2 Eye Tracker without being mounted on a standard laptop or monitor you must specify all the positioning parameters in the X Configuration Tool as described below X Configuration Tool M12K050141 0 0 deg D 0 0 gt em Units Active Display Size Use Side Offset Use Rotation cm Width 0 0 inch Height 0 0 Load from File Save to Eye Tracker Save to File 1 Units Select the unit you want to use for measuring the distances inches or centimeters
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