EyeLink Portable Duo User manual

EyeLink Portable Duo Installation Guide
Version 1.0.2
Copyright ©2016-2017, SR Research Ltd.
EyeLink is a registered trademark of SR Research Ltd.,
Mississauga, Ontario, Canada

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©2016-2017 SR Research Ltd.
SAFETY MARKINGS
Read instructions before use.
For indoor use only.
DC Power
Class II Equipment, no protective earth required
Separate electrical and electronic collection.
Intertek Safety Mark: Compliance of this product with applicable
standards is certified by Intertek, an independent testing agency.
SAFETY WARNINGS
WARNING: Do not open or modify the EyeLink Portable Duo in any way. This may render the
unit unsafe, resulting in shock or burn hazards, and will void the warranty and safety
certifications. No user-serviceable parts inside—contact SR Research Ltd. for all repairs.
WARNING: The EyeLink Portable Duo is not intended for use in an oxygen-rich environment,
or in the presence of flammable anaesthetics.
WARNING: The Host PC, and all peripherals connected to it with cables, should be positioned
out of reach of the participant (at least 120 cm away). Only devices included with the system
and clearly identified as suitable for contact with the participant (such as a response device)
should be within the participant’s reach.
WARNING: The operator should avoid simultaneously contacting the participant and the
computer, or any device connected with cables to the Host PC, such as a keyboard or mouse,
that were not included with the system and clearly identified as suitable for contact with the
participant.
WARNING: If the USB cable outer jacket is damaged, a shock hazard to the participant may
exist. Remove the unit from service immediately if such damage is found.

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WARNING: Do not place any objects on top of the eye tracker that could block air circulation
around the unit. If the unit has been inadvertently covered during operation, it could be hot!
Uncover it immediately, turn off its power source and let it cool, before touching it or allowing
participants near it.
WARNING: This unit is drip-proof and spill-resistant; it is not watertight or waterproof. Any
exposure to substantial quantities of fluids carries risk of danger to participants. Unit should
be taken out of service IMMEDIATELY after immersion or substantial spill onto unit, and
should be returned for inspection and repairs.
WARNING: After contact with any running or dripping liquid, disconnect the eye tracker from
the Host PC IMMEDIATELY and let it dry thoroughly before allowing participants near it. If
fluid has puddled in any area of the unit (such as below the optical window), clean and dry the
unit and return it for repair and inspection.
WARNING: The EyeLink Portable Duo is always powered while the Host PC is connected and
powered on. Therefore observe these precautions for participant safety:
• Before performing any cleaning other than wiping the optical window, power off the
Host PC or disconnect both plugs of the USB cable of the eye tracker.
• Do not cover or place any items on top of the eye tracker while the Host PC is powered
on, unless the USB cable is disconnected from both USB ports. Operating the unit while
covered could cause it to overheat and possibly cause a burn hazard.
• If the EyeLink Portable Duo fails to operate properly, is running at a higher than normal
temperature, or if the cable is damaged / the illuminator is not glowing, disconnect the USB
cable or turn off the Host PC, until the operator can troubleshoot the system.
WARNING: Use of this equipment adjacent to or stacked with other equipment should be
avoided because it could result in improper operation. If such an arrangement is unavoidable,
please make sure to check the data from all equipment to ensure that it is operating normally.
WARNING: Changes or modifications not expressly approved by the manufacturer will void the
warranty and authority to operate the equipment. This includes modification of cables or
opening unit without express instructions from the manufacturer.
WARNING: Use of cables other than those specified or provided by the manufacturer of this
equipment could result in increased electromagnetic emissions or decreased electromagnetic
immunity of this equipment and improper operation.
WARNING: Portable RF communications equipment (including peripherals such as antenna
cables and external antennas) should be used no closer than 30 cm (12 inches) to any part of
the EyeLink Portable Duo, including cables specified by the manufacturer. Otherwise,
degradation of the performance of this equipment could result.
WARNING: This equipment was not tested for degradation of performance during immunity
testing. If degradation of performance is observed that is unacceptable, check for sources of
interference that may be responsible.

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©2016-2017 SR Research Ltd.
CONTACT ADDRESS
SR Research Ltd
35 Beaufort Drive
Ottawa, Ontario, K2L 2B9
Canada
Fax:
[phone]
Phone:
[phone]
Toll Free:
1-866-821-0731 (North America only)
Email:
[e-mail]
Sales:
http://www.sr-research.com
Support:
http://www.sr-support.com

©2016-2017 SR Research Ltd.
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Table of Contents
1.!Introduction...............................................................................................................1!
1.1!EyeLink Portable Duo Installation - Suggested Equipment Layout ......... 1!
2.!Installation and System Cabling .............................................................................3!
2.1!Unpacking ............................................................................................3!
2.2!Pre-Installation Checklist ...................................................................... 3!
2.3!Setting up the Host PC.......................................................................... 4!
2.4!System Wiring.......................................................................................4!
3.!Eye Tracker Installation Using a Tripod Mount .....................................................6!
3.1!Mounting the Eye Tracker on the Tripod ...............................................6!
3.2!Adjusting the Eye Tracker Setup ........................................................... 7!
4.!Eye Tracker Installation Using a Laptop Mount ....................................................8!
4.1!Installing the Eye Tracker on the Laptop Mount .................................... 8!
4.2!Adjusting the Eye Tracker Setup ......................................................... 10!
5.!Testing the Host PC Installation ...........................................................................12!
5.1!Host Software Update.......................................................................... 13!
5.2!Troubleshooting Instructions .............................................................. 14!
5.2.1!No Frame Detected / frame rate or clock error -- restarting..........................14!
5.2.2!ERROR: -67: Can’t find SR Research USB Camera! ...................................15!
5.3!EyeLink Data Storage.......................................................................... 15!
5.4!Customizing Screen Settings ............................................................... 15!
5.4.1!Screen Dimensions.......................................................................................16!
5.4.2!Display Resolution ........................................................................................16!
5.4.3!Eye-to-Screen Distance ................................................................................17!
5.4.4!Camera-to-Screen Distance .........................................................................18!
5.4.5!Optimal Target-to-Camera Distance .............................................................19!
6.!Display PC Hardware and Software Installation..................................................21!
6.1!Display PC Hardware Installation ........................................................ 21!
6.2!Windows Installation........................................................................... 22!
6.2.1!Installing the EyeLink Developers Kit for Windows.......................................22!
6.2.2!Installing the EyeLink Data Viewer and Experiment Builder Software.......... 22!
6.2.3!USB License Key Installation........................................................................23!
6.2.4!Setting up the EyeLink Network Connection.................................................23!
6.3!Mac OS X Installation ......................................................................... 25!

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Figures
Figure 1-1: Suggested System Layout .....................................................................................2!
Figure 2-1: Basic Host PC and Camera Cabling...................................................................... 5!
Figure 3-1: EyeLink Portable Duo Eye Tracker Mounted on a Tripod...................................... 6!
Figure 3-2: Install Camera onto the Tripod...............................................................................6!
Figure 4-1: EyeLink Portable Duo Eye Tracker Installed on a Laptop Mount ..........................8!
Figure 4-2 Parts of a Laptop Mount..........................................................................................8!
Figure 4-3: Adjusting the Span of the Mounting Brackets (A –Screws Need to Be Loosened for
Adjustments; B – Stopper on the Mounting Brackets Should be Seated in one of the Holes;
C – Stopper not Properly Seated; D – Stopper Properly Seated)......................................9!
Figure 4-4: Installing Camera onto the Laptop Mount ............................................................ 10!
Figure 5-1: Host Application Camera Setup Screen ..............................................................13!
Figure 5-2: Example Screen from Web UI Displaying File Manager......................................13!
Figure 5-3: Updating Host Software through Web UI ............................................................. 14!
Figure 5-4: Updating Screen Dimensions ..............................................................................16!
Figure 5-5: Updating Display Resolution................................................................................17!
Figure 5-6: Updating Eye-to-Screen Distance........................................................................18!
Figure 5-7: Updating Camera-to-Screen Distance ................................................................. 19!
Figure 5-8: Optimal Target-to-Camera Distance ....................................................................19!
Figure 6-1: Choose “Change Adapter Settings” Option .........................................................23!
Figure 6-2: Configure IP Address on Windows 7 ...................................................................24!
Figure 6-3: Configure IP Address on Mac OS X .................................................................... 26!

Introduction
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1. Introduction
The EyeLink Portable Duo is a lightweight portable eye tracking system intended for eye- and
gaze-tracking applications in medical environments or research settings. It has a compact
unitary design, which makes it easier to carry around and simpler to set up compared to other
EyeLink models. The EyeLink Portable Duo can be used either as an ultra-high resolution
head-stabilized system or as a remote/head-free-to-move eye tracker that requires no head
stabilization.
The first four chapters of this Installation Guide provide hardware and software installation
instructions for the eye tracker when the camera is mounted on a Tripod or a Laptop Mount.
The basic steps in installing the EyeLink Portable Duo system are:
1) Unpacking and setting up the eye tracking hardware for your particular mount and
stimulus presentation method,
2) Testing the installation and configuring the EyeLink Portable Duo software,
3) Installing and configuring the EyeLink Windows, Mac OS X or Linux Display Software
(API and example experiments) on your Display computer.
A complete installation in a behavioral laboratory setting should take under an hour. If you
have questions or encounter a problem during the installation process, please contact SR
Research - sending an e-mail to [e-mail] is likely to get the fastest response,
though feel free to post on our support forums (www.sr-support.com) or call our support phone
line on the numbers listed in the manual.
If you would like to ensure that a technical representative is available for direct phone support
during your installation, please contact your SR Research representative to book a time for
installation phone support. Please try to arrange an installation time with at least one week’s
notice.
1.1 EyeLink Portable Duo Installation - Suggested Equipment Layout
It is important to consider the layout of the EyeLink Portable Duo system in order to optimize
participant setup, and to avoid lighting problems that might degrade tracking performance.
Before setting up the equipment, check the arrangement of the room to be used against these
suggestions. These will make acquiring good experimental data easier.
•Ideally, arrange the Host and Display computers in an ‘L’ shape, as in Figure 1-1. This
configuration allows the experimenter to adjust the eye tracking device and set up the
participant for the experiment while having access to both computer keyboards and
monitors.

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Introduction
©2016-2017 SR Research Ltd.
Figure 1-1: Suggested System Layout
•Ideally, the table you select should be deep enough to accommodate both the monitor and
eye tracker. For a 24” monitor with a 32°horizontal viewing angle, the minimum table depth
should be about 110 cm. A high table will ensure that even the tallest participants do not
need to hunch over in order for their view to be aligned with the top of the Display monitor.
•Avoid windows or other bright light sources that could cause reflections on the Host and
Display monitors. The grey walls highlighted in Figure 1-1 are locations where bright light
sources might cause reflections.
•Supply sufficient light in the room. The best way to light the room is with ceiling-mounted
fluorescent lights, above and no more than two meters behind the computer monitors.
Painting the walls light colors or white will maximize ambient light as well.
•Avoid environmental distractions. Be sure the room can be kept quiet, and that no
distracting items are viewable by the participant. It is a good idea to ensure that the
participant cannot see the Host monitor without turning their head (discourage this).
•Supply a comfortable, stable chair for the participants. It should not wobble or move when
sat in, and the back should be firmly attached to the seat - springiness encourages some
participants to rock forwards and back. A chair with a concave back also discourages
shifting of the body, as does a high back. The top of the chair back should be just below the
shoulders on an average participant. Finally, make sure participants can sit on and stand
from the chair easily, as the chair will be close to the table with the Display PC monitor.

Installation and System Cabling
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2. Installation and System Cabling
Important: Power off computers before connecting or disconnecting any cables! Ensure that all
cabling is properly connected and connectors are properly secured to the Host PC before use.
Warning: Static Electricity Discharge may cause permanent damage to your system. In order to
avoid possible static electricity discharge during installation, please discharge any static
electricity accumulated in your body by touching a grounded metal surface or the computer
case for a few seconds.
2.1 Unpacking
Unpack the system components, check them against the packing list for missing components,
and inspect for any damage. If the equipment has been transported or stored for more than an
hour at temperatures below 10°C, allow the eye tracker and other electronic equipment to
warm to room temperature before setup (at least 1 hour per 10°C below 15°C).
Assemble the EyeLink Portable Duo with its mount according to the instructions included with
the system.
2.2 Pre-Installation Checklist
Ensure that you have the listed components available before you start installation:
1. EyeLink Portable Duo eye tracking unit.
2. The supplied tripod or Laptop Mount.
3. Ethernet cable to connect the Host and Display PCs to one another.
4. EyeLink Host PC (a Laptop PC or a Workstation PC with monitor) with power supply.
5. EyeLink Portable Duo Installation Guide, User Manual, and Quick Start Guide.
6. “EyeLink Portable Duo Software” USB drive.
7. A box of Remote Mode target stickers.
8. Rollup tape measure.
You will also need the following components:
1. A power strip with surge protection to ensure that your EyeLink receives consistent
voltage and to make it easy to power the system on and off.
2. A Display PC that meets the required specifications listed in Section 6.1.

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Installation and System Cabling
©2016-2017 SR Research Ltd.
2.3 Setting up the Host PC
The EyeLink Portable Duo system comes with a pre-configured host computer (either a Laptop
or a Workstation PC, depending on what was chosen at the time of the order), which requires
simple setup and the attaching of cables. Set up the Host PC as you would any computer, at
the desired location (see Section 1.1 for a suggested layout). In the case of a Workstation PC,
this includes connecting the keyboard and mouse to the computer, as well as the power supply
and monitor cables.
2.4 System Wiring
Typical cabling steps for the Host PC are as follows (see also Figure 2-1; the top panel for a
setup using a tripod and the bottom panel for a setup using the laptop mount):
1. If not already completed, attach the keyboards, mouse, power cords, monitors etc. to
the Host PC and your Display PC. It is recommended that users plug the power supply
into a surge protected power source.
2. Plug both plugs of the eye tracker’s cable into USB 3.0 ports on the Host PC (please use
USB 3.0 ports only).
3. If you use a Workstation Host PC, connect one end of the network cable provided with
your system to the Ethernet port on the Host PC marked with a “Display PC Ethernet”
label. If you are using the Laptop Host PC, the network cable should be plugged directly
into the Ethernet port on the computer. Connect the other end of the cable to the
Ethernet port on the Display PC that you will later configure for use with the EyeLink
system. Ensure the cable is securely connected at both ends.