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:
(613) 482-4866
Phone:
(613) 271-8686
Toll Free:
1-866-821-0731 (North America only)
Email:
support@sr-research.com
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 support@sr-research.com 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.

Installation and System Cabling
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Figure 2-1: Basic Host PC and Camera Cabling

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Eye Tracker Installation Using a Tripod Mount
©2016-2017 SR Research Ltd.
3. Eye Tracker Installation Using a Tripod Mount
The EyeLink Portable Duo eye tracker can be mounted on a tripod and placed just below the
Display monitor that the participant is looking at. Please follow the steps below to set up the
eye tracker on a tripod.
Figure 3-1: EyeLink Portable Duo Eye Tracker Mounted on a
Tripod
3.1 Mounting the Eye Tracker on the Tripod
If the camera hasn’t been mounted on the supplied tripod yet, hold the camera and place it on
top of the tripod. Align the tripod screw with the ¼” mounting hole on the camera (see Figure
3-2). Now turn the rotating wheel on the tripod until the tripod is firmly attached to the
camera.
Figure 3-2: Install Camera onto the Tripod

Eye Tracker Installation Using a Tripod Mount
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3.2 Adjusting the Eye Tracker Setup
Follow the steps below to adjust the eye tracking unit, monitor, and head support (if operating
the eye tracker in the head-stabilized mode).
1) The Display PC monitor should be set such that when participants are seated and
looking straight ahead, their eyes are level with the top quarter of the monitor.
2) If you are operating the eye tracker in head-stabilized mode, please use the chinrest.
Please check that the chinrest is horizontally centered with the monitor (HINT: measure
from the head support to the left and right sides of the top of the display area of the
monitor, these should be equal).
3) Adjust the eye-to-screen distance so that the maximum viewing angle of the Display
screen is within 32-degrees horizontally and 25-degrees vertically. As a rule of thumb,
the monitor needs to be placed at a distance of at least 1.75 times its width away from
the participant.
4) The eye tracker should be placed at a distance of about 45 cm if measuring from the
front of the unit to the participant's eyes. The camera is recessed about 7 cm behind the
front of the enclosure, and the ideal eye-to-camera distance is about 52 cm. This means
that if you are using a larger monitor, it will be necessary to move the monitor back
while keeping the tripod and camera at its optimal distance from the participant, so as
to increase the distance between the participant and the screen while still ensuring that
the eye tracker can track the participants properly (the maximum viewing angle of the
display should be within 32° horizontally and 25° vertically).
5) For maximum eye tracking range, the tripod should be aligned to the center of the
monitor. The height of the tripod should also be raised (using the buttons on the legs)
so that the top of the eye-tracking unit is as close as possible to the lower edge of the
visible part of the monitor without blocking the participant’s view.
6) Adjust the tilt of the monitor if there are any reflection issues.
7) Please follow “Section 5.4 Customizing Screen Settings” to update tracker
configuration.

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Eye Tracker Installation Using a Laptop Mount
©2016-2017 SR Research Ltd.
4. Eye Tracker Installation Using a Laptop Mount
Another option for mounting the camera of the EyeLink Portable Duo eye tracker is to use a
laptop mount, if users are going to use the screen of a 15” or 17” laptop computer to present
stimuli to the participants. The camera will be placed over the laptop keyboard area in front of
the screen (see Figure 4-1).
Figure 4-1: EyeLink Portable Duo Eye Tracker Installed on a
Laptop Mount
4.1 Installing the Eye Tracker on the Laptop Mount
The following picture (Figure 4-2) illustrates the parts on a laptop mount. It will be easier if you
first adjust the mounting brackets on the intended laptop before attaching the camera to the
mount. Note that this process only needs to be done once for each Display laptop computer.
Figure 4-2 Parts of a Laptop Mount

Eye Tracker Installation Using a Laptop Mount
©2016-2017 SR Research Ltd.
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A
B
C
D
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)

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Eye Tracker Installation Using a Laptop Mount
©2016-2017 SR Research Ltd.
Place the laptop mount on top of the keyboard area of the laptop, with the clamping knob on
the right side (see panel A of Figure 4-3). If the two side rails of the mounting brackets are not
resting on the edges of the laptop, then the span of the mounting brackets needs to be
adjusted. Use the supplied screwdriver to loosen the two screws on the top of the center rail.
Pull out or push in the side rails as required. You may want to do this one side at a time until
the desired span is reached (so that the friction pads on the side rails sit on the left and right
edges of the laptop). For the right side of the mount, you may need to loosen the clamping knob
so that the side rail can be pulled out. Please note that the stopper on the side rail (see Panel
B) is seated in one of the holes, so you will need to loosen the screw quite a bit so that the
stopper can be re-seated into another hole. Before tightening the two screws, please check the
side rail on the right – the stopper on the side rail should be firmly seated in one of the index
slotted holes (panel C shows the stopper on the side rail is not seated in the hole; the side rail
should be fully contacting the center rail as in Panel D).
If the camera is currently mounted on a tripod, first remove the camera by rotating the wheel
on the tripod. Now place the camera on a desk with the screw holes facing up. Place the laptop
mount (the side with two brass T-slot nuts facing up) on the camera, and install the two
camera screws with the supplied screwdriver (see the left panel of Figure 4-4). Now flip the
mount and place it on the laptop with the illuminator and the camera facing toward you (see
the right Panel).
Figure 4-4: Installing Camera onto the Laptop Mount
4.2 Adjusting the Eye Tracker Setup
Follow the steps below to use the laptop mount to track eye movements on a 15” or 17” laptop
screen. If you are using an external monitor, you should mount the eye tracker on a tripod –
please follow the instructions provided in Chapter 3 “Eye Tracker Installation Using a Tripod”
of this guide.

Eye Tracker Installation Using a Laptop Mount
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1) Please make sure you use a height-adjustable chair so that you can raise/lower the
participant to the appropriate height. When the subject is seated, tilt the screen of the
laptop so that it is perpendicular to the participant’s line of sight.
2) Place the laptop mount over the keyboard area of the laptop, with the two side rails
resting on the edges of the laptop. You can slide the mount forward if the camera is
blocking the participant’s view at the bottom of the screen; otherwise, the camera
should be placed as close to the screen as possible without blocking the participant’s
view. Adjust the position of the laptop so that the eye tracker is placed at a distance of
about 45 cm if measuring from the front of the unit to the participant's eyes. The
camera is recessed about 7 cm behind the front of the enclosure, and the ideal eye-to-
camera distance is about 52 cm.
3) After the subject is seated, check the camera image displayed on the Host PC. If the
participant’s eyes are not displayed in the vertical center of the camera view, adjust the
camera angle by holding the camera with your left hand and tilting it to the intended
angle, and then tightening the clamping knob on the right side of the mount to keep the
camera at the intended position. Adjust the angle of the laptop if the participant’s eyes
are not displayed in the horizontal center of the camera view.
4) Please follow “Section 5.4 Customizing Screen Settings” to update tracker
configuration.

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Testing the Host PC Installation
©2016-2017 SR Research Ltd.
5. Testing the Host PC Installation
WARNING: Do not cover the eye tracker at any time when the unit is connected to the Host PC
and the Host PC is turned on. Do not place any object on top of the unit that could block air
circulation. If the unit has been inadvertently covered during operation, it could become hot
enough to be a burn hazard. Turn off the Host PC or remove the eye tracker USB cable,
uncover the unit, and let it cool before touching it or allowing participants in the area.
Make sure you have connected both plugs of the USB cable to USB 3.0 ports on the Host PC.
Now turn on the computer. The EyeLink Portable Duo Host application will start automatically.
You will first see an EyeLink Portable Duo splash screen, followed by the Setup screen of the
Host Application. The version of the Host software that is being used is displayed on the splash
screen as well as in the lower-left corner of the Setup screen. Please make sure that you are
using the latest version of the Host software, which can be downloaded from the SR Research
support website http://www.sr-support.com and can be installed using the System Update
tool (see section 5.1). Please try to stay up to date with the current Host software as we
periodically release updates that improve the software.

Testing the Host PC Installation
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Figure 5-1: Host Application Camera Setup Screen
A screenshot of the large field of view of the EyeLink Portable Duo camera (remote, head free-
to-move mode) is illustrated in Figure 5-1. Please consult Chapter 3 of the EyeLink Portable
Duo User Manual for a tutorial related to setting up the camera, calibration, and validation.
For proper data collection, you will also need to review the following sections of this installation
guide: section 5.4 “Customizing Screen Settings” and Chapter 6 “Display PC Hardware and
Software Installation”.
At any time, you can close/exit the Host Application by pressing Ctrl+Alt+Q (press all three
keys together) on the Host PC keyboard or by clicking on the “Exit” button on the Setup screen.
This will bring you to the Web User Interface (Web UI). Figure 5-2 is a screenshot of the Web
UI with File Manager running (a detailed description of this interface can be found in section
2.1 “Web User Interface” of the EyeLink Portable Duo User Manual). From the Web UI, the Host
Application can be started by clicking on the tracker icon () on the toolbar. To turn off the
Host PC, click the "Shutdown" button ( ).
Figure 5-2: Example Screen from Web UI Displaying File
Manager
5.1 Host Software Update
The EyeLink Portable Duo Host Application installed on the eye tracker can be updated
through the Web UI, which can be accessed from the Display PC as well as the Host PC. To do
so, first download the latest version of the Host Application from our support website
http://www.sr-support.com (go to "Downloads -> EyeLink Host Software -> EyeLink Portable
Duo Host software"). Copy the file to the Host PC or Display PC that runs the Web UI. Click on
the “Configuration” icon ( ) on the File Manager toolbar, and then select “System Update”

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Testing the Host PC Installation
©2016-2017 SR Research Ltd.
(). Now choose the “Update” tab (see Figure 5-3) and click on the "Browse ..." button to
locate the intended Host Application update file and then click "Update". Wait until the Host
Application is updated - please be patient as this process may take a few minutes to complete.
The Host Application will restart when the update process completes. In some rare cases, you
may want to revert back to an earlier version of the Host software. The System Update tool has
a "Rollback" tab that allows you to choose a particular version of the Host Application to revert
to.
Figure 5-3: Updating Host Software through Web UI
5.2 Troubleshooting Instructions
If the EyeLink Portable Duo Host Application fails to start, please watch closely for the error
message displayed on the Host screen. The complete error message is saved to the eye.log file
in the “\elcl\data” folder and is retrievable through the File Manager. Try clicking on the
tracker icon in the file manager to restart the Host Application. If the problem persists, please
contact us (support@sr-research.com).
This section lists some of the error messages you may see when starting the Host Application.
5.2.1 No Frame Detected / frame rate or clock error -- restarting
Sometimes, the Host Application will not start, with the following error displayed in the Web
UI.
ERROR: NO FRAMES DETECTED!
ERROR: frame rate or clock error – restarting
Please click on the “File Manager” link on the top. This will bring you to the File Manager
interface. Click on the shutdown button to power off the Host PC. Try unplugging the USB
cable and then plugging both plugs of the cable back to the USB 3.0 ports on the Host PC. Now
turn on the Host PC. If the problem is not resolved, contact us (support@sr-research.com).
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