EyeLink 1000 Installation Guide

EyeLink® 1000 Installation Guide
Tower, Desktop, LCD Arm, Primate,
and Long Range Mounts
Remote, 2000 Hz and Fiber Optic
Camera Upgrades
Version 1.5.0
Copyright ©2005-2009, SR Research Ltd.
EyeLink is a registered trademark of SR Research Ltd.,
Mississauga, Ontario, Canada
Read instructions before use.
Entela Safety Mark: Compliance of this product
with UL 60950 3rd Edition, CSA C22.2 No
60950-00-CAN/CSA is certified by Entela, an
independent testing body.
US
C
Certified
CLASS 1 LED DEVICE
IEC 60825-1 (Ed. 1.2:2001)
CONTACT ADDRESS
SR Research Ltd.
5516 Osgoode Main St.,
Ottawa, Ontario, Canada K0A 2W0
Fax: 613-482-4866
Phone: 613-826-2958
Toll Free: 1-866-821-0731
Email: support@sr-research.com
http://www.sr-research.com/
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© 2005-2009 SR Research Ltd.
Table of Contents
1. Introduction....................................................................................................... 1 1.1 2. Suggested Equipment Layout ............................................................. 2 Installation and System Cabling .................................................................. 4 2.1 Unpacking ......................................................................................... 4 2.2 Display PC Hardware Installation ....................................................... 4 2.3 Setting up the Host PC ....................................................................... 5 2.3.1 Rebuilding the Host PC ............................................................................... 6 2.4 Host PC Wiring .................................................................................. 6 2.4.1 Standard Camera System Installation ..................................................... 7 2.4.2 Fiber Optic Camera System Installation ................................................. 10 2.4.3 The Fiber Optic Camera Adapter ............................................................. 13 2.4.4 Analog Card Installation .......................................................................... 14 2.4.5 Camera Lens Selection ............................................................................. 14 3. Tower Mount Installation ............................................................................. 16 3.1 Mounting the Tower to a Table ......................................................... 17 3.2 Mounting the High-speed Camera and Cabling ................................. 19 3.2.1 Cabling for the Standard Camera ........................................................... 20 3.2.2 Cabling for the Fiber Optic Camera ......................................................... 20 3.3 4. Adjusting Head Rest Components .................................................... 21 Desktop Mount / EyeLink Remote Installation ..................................... 22 4.1 Mounting the EyeLink 1000 High-Speed Camera and Cabling .......... 22 4.1.1 Cabling for the Standard Camera ........................................................... 24 4.1.2 Cabling for the Fiber Optic Camera ......................................................... 24 4.2 Adjusting the Desktop Mount (Monocular, Binocular and Remote
Recording) .................................................................................................. 25 4.3 5. EyeLink Remote Hardware Adjustment for the Desktop Mount ......... 26 LCD Arm Mount Installation ....................................................................... 27 5.1 Choosing a Table ............................................................................. 28 5.2 Affixing the Arm Base to a Tabletop .................................................. 29 5.3 Assembling the LCD Arm Components ............................................. 30 5.4 Mounting the EyeLink 1000 High-Speed Camera .............................. 31 5.5 Attaching the Cables ........................................................................ 33 © 2005-2009 SR Research Ltd.
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5.6 Adjusting the Tension Points on the LCD Arm .................................. 35 5.7 LCD Arm Mount Adjustments for Monocular and Remote Recording . 35 5.8 Disassembling and Transporting the LCD Arm Mount ...................... 35 5.8.1 Option 1: Remove LCD Arm and Camera Assembly as a Unit............. 37 5.8.2 Option 2: Remove Camera Assembly then Remove the LCD Arm ....... 37 6. Primate Mount Installation ......................................................................... 38 6.1 7. Primate Mount Hardware Considerations ......................................... 39 Long Range Mount Installation .................................................................. 42 7.1 Mounting the EyeLink 1000 Fiber Optic Camera Head...................... 43 7.2 Mounting the Illuminator ................................................................. 45 7.3 Affixing the Long Range Mount’s Mounting Bar ................................ 46 7.4 Cabling for Long Range Mount ......................................................... 46 7.5 Long Range Mount Camera Setup .................................................... 46 8. Testing the Host PC Installation ................................................................ 51 8.1 Running the EyeLink Host Program ................................................. 51 8.2 Trouble Shooting Instructions .......................................................... 52 8.2.1 SCD file does not exist .............................................................................. 53 8.2.2 “No Hardware” error ................................................................................. 53 8.2.3 EyeLink CL camera not found ................................................................. 53 8.2.4 ERROR: no sync found ............................................................................. 53 8.2.5 Error: No Optilink head found. ................................................................. 54 8.3 EyeLink Data Storage....................................................................... 54 8.4 Customizing Your PHYSICAL.INI Settings ......................................... 54 8.4.1 Measuring screen_phys_coords ............................................................... 55 8.4.2 Measuring screen_distance ...................................................................... 56 8.4.3 Entering Values into PHYSICAL.INI......................................................... 56 9. Display PC Software Installation ................................................................ 58 9.1 Windows Installation ........................................................................ 58 9.1.1 Installing the EyeLink 1000 Experiment Programming Kit................... 58 9.1.2 Installing the IO Port Access Driver ......................................................... 58 9.1.3 Installing the EyeLink Data Viewer and Experiment Builder Software59 9.1.4 USB License Key Installation ................................................................... 59 9.1.5 Setting up EyeLink 1000 Network Connection ...................................... 60 9.1.6 System and Programming Tools Required.............................................. 61 iv
© 2005-2009 SR Research Ltd.
9.2 10. Mac OSX Installation ....................................................................... 61 Appendix A: Host PC Hardware Installation ............................................ 63 10.1 Installing the High-Speed Frame Grabber - PCI card......................... 63 10.2 Installing the Ethernet Card ............................................................. 63 10.3 Installing the Data Translation Analog Card (Optional) ..................... 64 11. Appendix B: Host PC Software Installation Under Windows 2000/XP65 11.1 Install System Commander .............................................................. 65 11.2 Resize Existing Disk Partition........................................................... 66 11.3 Create the EyeLink 1000 Host Application partition.......................... 68 11.4 Copy the Host Application files to the New Partition .......................... 69 11.5 Configuring the Keyboard................................................................. 70 11.6 Transfer the System to make the EyeLink Partition Bootable ............ 70 11.7 Organize System Commander’s ‘OS Selection Menu’ ......................... 71 11.8 Automated boot into the EyeLink 1000 Operating System................. 72 12. Appendix C: Host PC Software Installation Under Windows Vista .... 73 12.1 Formatting the Hard Drive under ROM-DOS .................................... 73 © 2005-2009 SR Research Ltd.
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Figures
Figure 1-1: Suggested EyeLink 1000 System Layout ...................................................... 2 Figure 2-1: The Standard Camera (left) and Fiber Optic Camera Base Box and
Camera Head (right) ....................................................................................................... 7 Figure 2-2: Host and Display PC Basic Cabling ............................................................... 8 Figure 2-3: Fiber Optic Camera Components. ................................................................ 10 Figure 2-4: Camera Base Box and Cabling affixed to the side of the Host PC .......... 12 Figure 2-5: The Camera Adapter (left) with Camera Head inserted (right) ................. 13 Figure 3-1: Components of EyeLink 1000 Tower ........................................................... 16 Figure 3-2: Clamping Chinrest to Table .......................................................................... 17 Figure 3-3: Placing and Adjusting Tower Mount ............................................................ 18 Figure 3-4: Adjust Height of Tower to Half the Screen Area of Monitor ..................... 19 Figure 3-5: Views of the EyeLink 1000 Tower and Camera .......................................... 19 Figure 3-6: Camera and Illuminator Cables for a Standard Camera Used in the
Tower Mount ................................................................................................................. 20 Figure 3-7: Fiber Optic Camera in the Tower Mount .................................................... 21 Figure 4-1: EyeLink 1000 Desktop Mount Components ............................................... 22 Figure 4-2: Desktop Mount Camera Adjustment ........................................................... 22 Figure 4-3: Camera Level Position for Remote and Stabilized Monocular
Recording ....................................................................................................................... 23 Figure 4-4: Camera Angled Position for Stabilized Binocular and Monocular
Recording ....................................................................................................................... 24 Figure 4-5: Camera and Illuminator Cables from Desktop Mount .............................. 24 Figure 4-6: Fiber Optic Camera in the Desktop Mount viewed from the front
(left) and rear (right) ..................................................................................................... 25 Figure 5-1: Typical EyeLink 1000 LCD Arm Mount Installation ................................. 27 Figure 5-2: EyeLink 1000 LCD Arm Mount Components: LCD Arm Mount Base,
Arm, Camera and LCD Assembly ............................................................................... 28 Figure 5-3: Two Configurations of the LCD Arm Mount Base...................................... 30 Figure 5-4: Rearview of the LCD Arm Mount’s Camera (top) and LCD Monitor
(bottom) .......................................................................................................................... 33 Figure 5-5: Cables Emerging from the Bottom of the LCD Arm .................................. 34 Figure 5-6: Securing the LCD Arm for Disassembling and Transporting .................. 36 Figure 6-1: Typical EyeLink 1000 Primate Mount Installation .................................... 38 vi
© 2005-2009 SR Research Ltd.
Figure 7-1: EyeLink 1000 Long Range Mount with Camera Head (left) and as
shipped (right) ............................................................................................................... 42 Figure 7-2: Mounting Bar and Clips-note Guide Pins on the Camera Head clip
(left) ................................................................................................................................. 43 Figure 7-3: Fiber Optic Camera Head with lens (left), attached to the Bracket
(center), Guide Holes in the Bracket accept Guide Pins from Camera Head
Clip (right) ...................................................................................................................... 43 Figure 7-4: Bracket in the Level Position (left) and Angled (right) – without the
Camera Head (top) and with the Camera Head (bottom) ........................................ 44 Figure 7-5: Illuminator attached using two brass thumbscrews (left), rotates
around the Mounting Bar when the knob is released (right) ................................. 45 Figure 7-6: Tripod Adapter (left), Base (middle) and Mounting Bar attached to
the Tripod Adapter using Two Brass Bolts (right) ................................................... 45 Figure 7-7: Focusing the Illuminator ............................................................................... 47 Figure 7-8: Pointing the Camera-visible illumination boundary (left) and fully
illuminated target (right).............................................................................................. 48 Figure 8-1: Booting into the EyeLink Partition ............................................................... 51 Figure 8-2: Host Application Camera Setup Screen ...................................................... 52 Figure 8-3: Host PC Set Options Screen.......................................................................... 52 Figure 8-4: Measuring screen_phys_cords ...................................................................... 55 Figure 10-1: High-Speed Frame Grabber ........................................................................ 63 Figure 10-2: D-Link Ethernet Card .................................................................................. 64 Figure 10-3: Analog Card ................................................................................................... 64 Figure 11-1: License Code Entry ...................................................................................... 65 Figure 11-2: Enable System Commander ....................................................................... 66 Figure 11-3: Select Partitioning then Manual Partitioning ........................................... 66 Figure 11-4: Partition Selection and Resizing................................................................. 67 Figure 11-5: Partition and Partition Type Selection....................................................... 67 Figure 11-6: Create a Custom FAT 32 Partition ............................................................. 68 Figure 11-7: Windows Explorer Tools Folder Options… Dialog ................................... 69 Figure 11-8: Select Partition to Rename .......................................................................... 71 Figure 11-9: Select Description and Icons ...................................................................... 72 Figure 11-10: Order Add and Remove ............................................................................. 72 © 2005-2009 SR Research Ltd.
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1.
Introduction
This document provides hardware and software installation instructions for the EyeLink
1000 using the Tower, Desktop, Primate, LCD Arm or Long Range mounts.
There are two EyeLink 1000 cameras (the Standard camera and the Fiber Optic camera)
and each is compatible with all of the different mount types with the exception that only
the Fiber Optic camera works with the Long Range Mount. The cameras have identical
technical specifications, though the Fiber Optic camera has a non-ferromagnetic
optimized design to operate in electromagnetically sensitive environments such as is
required for EEG, MEG or MRI.
Both EyeLink 1000 cameras can be upgraded to enable 2000 Hz recording, or to use
the EyeLink 1000 as a Remote eye tracker that requires no head stabilization. While the
2000 Hz camera upgrade is compatible with all mount options, the EyeLink Remote
upgrade works with only the Desktop and LCD Arm Mounts.
For the simplicity of presentation, these eye tracker configurations are collectively
referred to as the EyeLink 1000 throughout this document, with important exceptions
noted where necessary.
The basic steps in installing the EyeLink 1000 system are:
1) Unpack and Install the EyeLink 1000 Hardware.
2) If your system did not come with a preconfigured Host PC, install necessary
Operating System and EyeLink 1000 Host Application software on the Host PC
you have acquired.
3) Install and configure the EyeLink 1000 Windows Display Software (API and
example experiments) on the Display PC.
4) Test the installation.
If you received a pre-configured Host PC with your eye tracker the installation process
should take under an hour. If you are configuring your own Host PC, the installation
process will take about two hours. Either way, budget this amount of time to dedicate
to the process.
If you have questions or encounter a problem during the installation process, please
contact SR Research through one of the contact channels listed in the contacts section
of our website at http://www.sr-research.com
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.
Introduction
© 2005-2009 SR Research Ltd.
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1.1
Suggested Equipment Layout
The layout of the EyeLink 1000 equipment is important if participant setup is to be
convenient, and lighting problems are to be avoided. Before setting up the equipment,
check the arrangement of the room to be used against these suggestions. These will aid
in the ease of acquiring good experimental data.
• Ideally, arrange the Host and Display PC monitors on tables in an ‘L’ shape, as in
Figure 1-1. This configuration allows the experimenter to adjust the eye tracking
device and set up the subject for the experiment while having access to both
computer keyboards and monitors.
Figure 1-1: Suggested EyeLink 1000 System Layout
• If you are using the SR Research chinrest, please make sure you have a sturdy table
available to clamp the chinrest to. This table must have a minimum thickness of 1.8
cm and a maximum thickness of 8.0 cm. The bottom edge of the table should have a
depth of at least 6.0 cm to mount the integrated table clamp.
• Ideally, the table you select should be deep enough to accommodate both the
monitor (especially for a CRT monitor) and eye tracker. For a 21’’ CRT monitor with a
30° viewing angle, the minimum table depth should be about 130 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 computer’s monitor.
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Introduction
© 2005-2009 SR Research Ltd.
• 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 will cause reflections.
• Supply sufficient light in the room. The best way to light the room is with ceilingmounted 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, that no
distracting items are viewable by the participant, and so on. 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 enter and leave the chair easily, as the chair will be close to
the table with the Display PC monitor.
Introduction
© 2005-2009 SR Research Ltd.
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Installation and System Cabling
2.
IMPORTANT:
1. 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 and the EyeLink 1000 camera before use.
2. Ensure that the RED switch on the back of the Host PC power supply
(near the on/off switch) matches your country’s voltage! (e.g.,115 or 230 V)
3. 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 all of the items you have received from SR Research Ltd. If the system has been
stored or transported at a temperature below 10°C, allow all parts to warm to room
temperature before proceeding.
If you are unpacking the EyeLink 1000 Tower Mount, please be careful as it contains
glass that may have been broken during shipping.
IMPORTANT: The EyeLink 1000 Tower assembly should be held by the
vertical posts and should NEVER be held by the mirror or the
components attached to the mirror.
2.2
Display PC Hardware Installation
Set up the Display PC (the computer to be used to deliver the experiment to the subject
and to control EyeLink 1000 calibration) at the desired location (see Section and Figure
1-1 for a suggested layout). This includes connecting the keyboard and mouse to the
computer, as well as the power supply and monitor cables.
The requirements for the Display PC depend greatly on the type of experimental
paradigms for which the EyeLink 1000 will be used. For example, gaze contingent
paradigms generally require more computing power than simple cognitive paradigms
because the computer display needs to be updated as quickly as possible. Similarly,
video and audio intensive experiments may need faster hard disks to support the
transfer of large video file data to the computer in a timely manner. The following
requirements are suggestions for a Display PC configuration that should be able to
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Installation and System Cabling
© 2005-2009 SR Research Ltd.
handle most experimental requirements. Please contact a SR Research Ltd.
representative if you have specific questions about your situation and would like our
input.
2.3
•
Pentium Core2Duo 2.6 GHz or higher; at minimum your processor should
support Hyperthreading or have multiple cores
•
80 GB or larger hard disk with 7,200 or higher rpm
•
256 MB PCIx video card supporting vertical refresh rates of at least100 Hz; for
legacy technology AGP 8X or PCI video cards may suffice
•
At least 2 GB RAM (more never hurts!)
•
A DVD-ROM writer for software installation and data backup
•
32 bit Windows XP or Vista preferred; or MacOS X 10.2 or higher
•
17” or larger CRT monitor (for valid timing synchronization), that supports
vertical refresh rates of >= 100Hz (10 ms frames) and horizontal refresh rates of
at least100 kHz
•
Ethernet port to connect Display PC to the EyeLink 1000 Host PC
•
Optional Ethernet card for use on local network (a dedicated Ethernet port is
ideal to connect to the EyeLink 1000 system)
•
A keyboard and mouse or other pointing device
•
Free USB ports (if EyeLink Data Viewer/SR Research Experiment Builder is
purchased)
Setting up the Host PC
Most new acquisitions of the EyeLink 1000 include a preconfigured Host PC requiring
simple setup and the attaching of cables.
Set up the Host PC as you would any computer, at the desired location (see Section and
Figure 1-1 for a suggested layout). This includes connecting the keyboard and mouse to
the computer, as well as the power supply and monitor cables.
IMPORTANT: Please be sure to use the PS/2 keyboard and mouse
supplied with your Host PC.
If your EyeLink 1000 has a preconfigured Host PC
continue on to section 2.4 to begin attaching cables.
Installation and System Cabling
© 2005-2009 SR Research Ltd.
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2.3.1 Rebuilding the Host PC
The PC that will host the EyeLink hardware and software must meet certain
specifications due to the nature of the operating system that the EyeLink Host
application runs under. As computer technology is rapidly changing, only systems
tested and approved by SR Research Ltd. can be guaranteed to work.
In the interest of not instructing our customers to purchase computer equipment only
to encounter difficulties with their installation, the reader is directed to consult the web
page http://www.sr-research.com/compatibleHostPCs.html for a list of systems known
to be compatible and accurate when running the EyeLink hardware and software.
If your EyeLink 1000 system did not come with a preconfigured Host PC, or if you are
upgrading or replacing your original Host PC, you should have the following additional
components on hand. These items were supplied with your original EyeLink purchase.
Please follow “Appendix A: Host PC Hardware Installation” to install these hardware
components then continue with the software instructions below.
1. Frame Grabber PCI or PCIe card.
2. DLINK DFE538-TX Ethernet PCI card, or Agere ET131x Gigabit PCIe card.
3. Optional Analog card (if purchased).
4. “SR Research EyeLink CL” CD. Please note that each EyeLink 1000 system
requires a camera-specific .SCD file and therefore, you should use the EyeLink
1000 Installation CD that comes with your system.
5. “ROM-DOS Boot CD”.
Depending on the operating system that is to be used on your Host PC’s non-EyeLink
partition, you may require the following:
1. “System Commander Boot CD” – originally supplied for customers using
Windows XP on their Host PCs; not required for Vista (see Appendix C).
To install the EyeLink Host software on a computer with Windows XP, follow the
instructions in Appendix B. To install the Host software under Vista, follow the
instructions in Appendix C. Note that for Vista, a clean installation of Vista is required.
2.4
Host PC Wiring
In all cases, connect all cables with the power off, and power up the system once all
cabling is in place.
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Installation and System Cabling
© 2005-2009 SR Research Ltd.
Figure 2-1: The Standard Camera (left) and Fiber Optic
Camera Base Box and Camera Head (right)
The cable connections required depend upon whether you have the EyeLink 1000
Standard Camera or the Fiber Optic Camera. The Standard Camera is pictured in the
left side of Figure 2-1, while the Fiber Optic Camera components appear in the right
side of Figure 2-1.
If you have the Standard Camera, follow the instructions in the next section entitled
“Standard Camera System Installation”. If you have the Fiber Optic Camera then skip to
Section 2.4.2 entitled “Fiber Optic Camera System Installation”.
2.4.1 Standard Camera System Installation
2.4.1.1 Standard Camera Pre-installation Checklist
Ensure that you have the listed components available before you start installation:
1. EyeLink 1000 Standard Camera (pictured in the left side of Figure 2-1).
2. EyeLink 1000 Mount. Each type of Mount consists of an infrared illumination
source and an apparatus for holding the EyeLink 1000 camera. Each Mount
option has a separate chapter to be consulted regarding its installation. Mount
types for the Standard Camera include the Desktop, Tower, LCD Arm and
Primate Mounts.
3. 12V Power supply for the EyeLink 1000 Standard Camera.
4. CameraLink cable to connect EyeLink 1000 Standard Camera to High-Speed
Frame Grabber card (may be integrated into the LCD Arm Mount).
5. USB Button Box (Microsoft Sidewinder game controller) to be attached to the
Host PC and USB extension cord.
6. Crossover Ethernet cable to connect Host and Display PC together.
7. EyeLink Host PC – if your system did not come with a preconfigured Host PC, or
if you wish to replace the Host PC, see section 2.3.1 for more information.
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.
Installation and System Cabling
© 2005-2009 SR Research Ltd.
7
2. A Display PC that ideally meets the required specifications. These specifications
are listed in section 1.3.2.
3. Some tools may be needed to adjust your mount or tighten cabling (usually a
Phillips and/or slotted screwdriver will do).
Figure 2-2: Host and Display PC Basic Cabling
2.4.1.2 Standard Camera System Wiring
Standard Camera cabling steps for the Host PC are (see Figure 2-2):
1. If not already completed, attach the keyboards, mouse, power cords, monitors
etc. to the Host and Display PCs.
2. Connect one end of the Ethernet crossover cable provided with your system to
the Ethernet card port on the Host PC marked with an “EyeLink Ethernet” label.
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.
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Installation and System Cabling
© 2005-2009 SR Research Ltd.
Do NOT connect the crossover cable to the Ethernet port on the Host PC marked
“LAN/WAN”, which is on the motherboard. This port may be used to access the
Internet when running Windows.
3. Connect one end of the CameraLink Cable provided with your system to the
High-speed Frame Grabber card interface on the back of the Host PC. Ensure
the CameraLink cable is firmly attached with the two thumb screws tightened to
lock the cable in place. A slotted screwdriver may make this task easier.
The other end of the CameraLink Cable will be attached to the Standard Camera
once it is placed in its Mount.
4. Plug the 12V power supply’s small, circular end into the standard EyeLink 1000
camera. Plug the other end of the power supply into a surge protected power
source. The camera is powered as soon as it has an electrical supply, so a power
supply with a switch provides a convenient way to turn the camera on and off.
5. Plug the supplied USB Button Box into a USB port on the back of the Host PC
as indicated by the label “EyeLink Button Box”. Use the optional USB extender
cable if the game pad needs to have a cord longer than one meter.
NOTE: The USB Button Box must be directly connected to a USB port on
the Host PC and cannot be connected through a USB hub.
Continue on to Section 2.4.4 entitled “Analog Card Installation”
Installation and System Cabling
© 2005-2009 SR Research Ltd.
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2.4.2 Fiber Optic Camera System Installation
In general, the Fiber Optic Camera Head should be powered before the Camera Base
Box and the Host PC. Should the camera be unresponsive, power off the Camera Head
and then re-power it so that Camera Head is powered before the Camera Base Box
which in turn communicates with the Host PC software.
2.4.2.1 Fiber Optic Camera Pre-installation Checklist
Ensure that you have the following listed components before you start installation.
1. EyeLink 1000 Fiber Optic Camera components. The following items have been
provided with your EyeLink 1000 Fiber Optic Camera (labeled in Figure 2-3, as
listed below):
i.
ii.
iii.
iv.
v.
vi.
Camera Base Box
Camera Adapter (for use with Desktop, Tower, Primate and LCD Arm
Mount options)
Camera Head
Integrated Extension Cable (for use with Desktop, Tower, Primate and
LCD Arm Mounts)
Fiber Optic Extension Cable
Fiber Optic Camera 5V power supply with pressure-release connectors
Figure 2-3: Fiber Optic Camera Components.
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Installation and System Cabling
© 2005-2009 SR Research Ltd.
2. EyeLink 1000 Mount. Each type of Mount consists of an infrared illumination
source and an apparatus for holding the EyeLink 1000 camera. Each Mount
option has a separate chapter to be consulted regarding its installation. Mount
types for the Fiber Optic Camera include the Desktop, Tower, LCD Arm, Primate
and Long Range Mounts.
3. 12V Power supply for the EyeLink 1000 Fiber Optic Camera Base Box.
4. CameraLink cable to connect Camera Base Box to High-Speed Frame Grabber
card.
5. USB Button Box (Microsoft Sidewinder game controller) to be attached to the
Host PC and USB extension cord.
6. Crossover Ethernet cable to connect Host and Display PC together.
7. EyeLink Host PC – if your system did not come with a preconfigured Host PC, or
if you wish to replace the Host PC, see Section 2.2 for more information.
You will 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 ideally meets the required specifications. These specifications
are listed in section 1.3.2.
3. Some tools may be needed to adjust your mount or tighten cabling (usually a
Phillips and/or slotted screwdriver will do).
2.4.2.2 Fiber Optic Camera System Wiring
Fiber Optic Camera cabling steps are (see Figure 2-2):
1. If not already completed, attach the keyboards, mouse, power cords, monitors
etc. to the Host and Display PCs.
2. Connect one end of the Ethernet crossover cable provided with your system to
the Ethernet card port on the Host PC marked with an “EyeLink Ethernet” label.
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.
Do NOT connect the crossover cable to the Ethernet port on the Host PC marked
“LAN/WAN”, which is on the motherboard. This port may be used to access the
Internet when running Windows.
3. Connect one end of the CameraLink Cable provided with your system to the
High-Speed Frame Grabber card interface on the back of the Host PC. Attach the
other end of the CameraLink cable to the Camera Base Box for the Fiber Optic
Installation and System Cabling
© 2005-2009 SR Research Ltd.
11
Camera. Affix the Camera Base Box to the Velcro strips on the rear left side of
your Host PC as pictured in Figure 2-4.
Ensure both ends of the CameraLink cable are firmly attached, with the two
thumb screws tightened to lock the cable in place. A slotted screwdriver may
make this task easier.
Figure 2-4: Camera Base Box and Cabling affixed to
the side of the Host PC
4. Plug the 12V power supply’s small, circular end into the standard EyeLink
Camera Base Box. Plug the other end of the power supply into a surge protected
power source.
5. If you are using the Fiber Optic Camera with the Long Range Mount, plug one
end of the Fiber Optic Extension Cable into the Fiber Optic receptacle on the
Camera Base Box. This will be toward the Host PC’s front as pictured in Figure
2-4.
6. If you are using the Fiber Optic Camera with the Desktop, Tower, Primate or
LCD Arm Mount, then locate the Fiber Optic Integrated Extension Cable.
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i.
Plug the 3.5mm (1/8”) mini-plugs (male, or plug ends) of the Integrated
Extension Cable into the Camera Base Box (female, or socket ends) that
should be affixed to the rear, left, side of the Host PC (see Figure 2-4).
The mini-plugs are marked “R” and “L” and should be plugged into the
corresponding marked sockets on the Camera Base Box, on the rear,
beneath the power connector.
ii.
Plug the fiber optic connector of the Integrated Extension Cable into the
Fiber Optic receptacle on the Camera Base Box. This will be toward the
Host PC’s front as pictured in Figure 2-4.
iii.
The other end of the Integrated Extension Cable will be connected to the
fiber optic cable of the Camera Head and to the illuminator leads from
your mount. Detailed instructions for these connections can be found in
the descriptions for each type of Mount.
Installation and System Cabling
© 2005-2009 SR Research Ltd.
7. Plug the supplied USB Button Box into a USB port on the back of the Host PC
as indicated by the label “EyeLink Button Box”. Use the optional USB extender
cable if the game pad needs to have a cord longer than one meter.
NOTE: The USB Button Box must be directly connected to a USB port on
the Host PC and cannot be connected through a USB hub.
2.4.3 The Fiber Optic Camera Adapter
To use the Fiber Optic Camera with the Desktop, Tower, Primate or LCD Arm
Mount, the Camera Head needs to be inserted into a Camera Adapter (see the
left side of Figure 2-5) that makes the Camera Head the same size as the
Standard Camera (see the right side of Figure 2-5). The Camera Adapter can
then be inserted in any type of mount in the place of the Standard Camera.
Follow these steps to insert the Camera Head into the Camera Adapter:
1. Remove the two thumbscrews and crosspiece from the Camera Adapter.
2. Place the Camera Head into the Camera Adapter, with its two attached cables
emerging from the opening on the side of the bracket (see the right side of
Figure 2-5).
3. Replace the crosspiece and fasten the thumbscrews.
Figure 2-5: The Camera Adapter (left) with Camera
Head inserted (right)
Further instructions regarding the use of the Fiber Optic Camera in various
types of mounts appear in later sections describing the installation steps to be
taken for each type of mount.
Installation and System Cabling
© 2005-2009 SR Research Ltd.
13
2.4.4 Analog Card Installation
If an optional Data Translation analog card was purchased with your system it will
require additional cabling steps.
2.4.4.1 Analog Card Pre-installation Checklist
If an analog card option was purchased, you should also have:
1. Full length PCI Analog card (already seated in the Host PC if your system comes
preconfigured).
2. Analog breakout board.
3. Cable to connect the analog PCI card to the breakout board.
2.4.4.2 Analog Card Wiring
Connect one end of the supplied analog card cable to the Host PC. Connect the other
end of the cable to the analog breakout board (a square circuit board with a large
number of screw terminals). Ensure the cable is firmly attached at both ends and that
the thumb screws have been tightened to lock the cable in place.
2.4.5 Camera Lens Selection
The EyeLink 1000 Mounts come with a number of different lenses to be used for unique
eye tracking situations. Table 1 lists recommended lenses for a range of eye-to-camera
distances as a function of the type of mount being used.
In all cases, eye-to-camera distance is listed in cm and measured from the surface that
the lens screws into (on the Standard Camera or the Fiber Optic Camera Head) to the
bridge of the participant’s nose.
Lens
Aperture Size
16 mm
(Short Handle or Small Wheel)
25 mm
(Long Handle or Large Wheel)
35 mm
50 mm
75 mm
Tower/
Primate
Mount
Desktop Mount or LCD Arm
Mount
Monocular
with Head
Remote Mode
Support
Desktop Mount
Long Range Mount
Binocular
Monocular/Binocular
-
-
50-70 cm
-
-
IDEAL
-
-
50-60 cm
-
-
50-70 cm
-
60-70 cm
60-70 cm
-
-
-
-
70-100 cm
-
-
-
-
100-150 cm
Table 1. Lens Guide for Different Viewing Distances
14
Installation and System Cabling
© 2005-2009 SR Research Ltd.
Continue on to the section pertaining to the mounting option that you
are installing:
Tower Mount –
3 “Tower Mount Installation”
Desktop Mount –
4 “Desktop Mount Installation”
LCD Arm Mount –
5 “LCD Arm Mount Installation”
Primate Mount –
6 “Primate Mount Installation”
Long Range Mount – 7 “Long Range Mount Installation”
Installation and System Cabling
© 2005-2009 SR Research Ltd.
15
3.
Tower Mount Installation
Please follow the steps below to mount the EyeLink 1000 Tower onto the table and to
install the camera. Figure 3-1 illustrates adjustable parts on the EyeLink 1000 Tower
(a Standard Camera is used in this illustration).
Figure 3-1: Components of EyeLink 1000 Tower
16
Tower Mount Installation
© 2005-2009 SR Research Ltd.
3.1
Mounting the Tower to a Table
Important: The head support Tower should only be held by the vertical
posts and should NEVER be held by the mirror or the components
attached to the mirror. We recommend you have somebody available to
assist with mounting the head-support Tower onto the table to prevent
damages to the IR mirror or other parts of the Tower.
Check whether the table is suitable for mounting the EyeLink 1000 Tower – the table
used should have a minimum thickness of 1.8 cm and a maximum thickness of 8.0 cm.
Figure 3-2: Clamping Chinrest to Table
Loosen the table clamp by turning the knob counterclockwise, then place the table
clamp fully onto the table, and then tighten it clockwise (see Figure 3-2). Check that it
is firmly secured by gently attempting to rock the table clamp base free. If the table
clamp base wobbles you will have to tighten it further.
Tower Mount Installation
© 2005-2009 SR Research Ltd.
17
Figure 3-3: Placing and Adjusting Tower Mount
The camera mount is quite heavy and cumbersome to move. For safety purposes it is
recommended that two people participate in setting up this piece of the equipment. One
person can support the weight of the camera mount while the other lines the springloaded clamps with holes in the Tower poles. When released, the clamps secure a peg
into the holes of the Tower poles, thereby supporting the weight of the camera mount.
Gently pick up the camera mount with the mirror on the side that is away from you. It
is recommended that you hold the camera mount near the Tower height adjustment
knobs as shown in the left side of Figure 3-3. Be careful not to scratch or touch the
mirror. Now line the mount up with the vertical posts and gently lower it into position.
The camera mounting should rest about ½ inch into the hole.
Once the Tower Mount is placed onto the Tower poles you will need to adjust its height
by simultaneously pulling the Tower height adjustment knobs away from the poles on
both the left and right hand sides (see right side of Figure 3-3). Be careful as you still
have to support the weight of the camera mounting unit. Make sure that the unit does
not fall down the poles. If at any point the camera mounting unit does begin to fall,
releasing the spring-loaded height adjustment will cause them to lock into one set of
holes in the Tower poles, preventing the Tower from falling further.
Gently lower or raise the camera mount by pulling to release the height adjustment
knobs and by raising or lowering the unit until the knobs are in line with the center of
the display monitor (see Figure 3-4). This will produce an optimal viewing angle for
participants. Once the Tower height is set for a normal operation, it does not need to be
adjusted further. The experimenter should adjust the heights of the chair and/or chin
rest on a participant-to-participant basis.
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Tower Mount Installation
© 2005-2009 SR Research Ltd.
Figure 3-4: Adjust Height of Tower to Half the Screen
Area of Monitor
3.2
Mounting the High-speed Camera and Cabling
The 25 mm lens should be used on the EyeLink 1000 Tower Mount. Remove the cap
from the camera lens. Remove the protective cover plugged to the Camera Head as well.
Turn the camera lens into the thread on the Camera Head. If the camera handle hits
the Camera Adapter (for a Fiber Optic Camera), use a Philips screw driver to loosen the
screw on the camera handle slightly (the screw shouldn’t come off the handle
completely) and pull the handle away from the bracket so that the lens is fully screwed
into the Camera Head. Then retighten the lens handle screw.
Figure 3-5: Views of the EyeLink 1000 Tower and
Camera
Hold the camera with the lens facing down so that the focusing arm is on the right.
Align the hole on the camera to the screw on the top of the Tower and tighten the screw
knob from below. Please make sure the camera lens is not dusty or scratched! If you are
using the Fiber Optic Camera, make sure the fiber optic cable is not twisted or bent.
Tower Mount Installation
© 2005-2009 SR Research Ltd.
19
3.2.1 Cabling for the Standard Camera
After the camera is mounted onto the Tower, connect the two illuminator cables that
come out of the left side of the head support Tower to the left side of the EyeLink 1000
high-speed camera: plug the cable marked with “R” to the port marked with “R” and the
one with “L” to the remaining port. Connect the CameraLink cable to the top of the
EyeLink 1000 high-speed camera. Connect the EyeLink 1000 power supply that was
provided with your system to the power connector on the left side of the EyeLink 1000
camera.
Figure 3-6: Camera and Illuminator Cables for a
Standard Camera Used in the Tower Mount
3.2.2 Cabling for the Fiber Optic Camera
After the Camera Adapter with the Camera Head and lens is mounted onto the Tower,
connect the two illuminator cables that come out of the left side of the Tower mount to
the mini-plug sockets on the Integrated Extension cable – make sure the cable marked
with “R” is connected to the socket marked with “R” and the one marked with “L” to the
remaining socket.
If you haven’t already, connect the power supply to the Camera Head – note one of the
pressure-release power connectors is unused. Connect the fiber optic cable of the
Camera Head to the fiber optic connector of the Integrated Extension Cable. Now
connect the EyeLink 1000 power supply that was provided with your system to the
power connector on the Camera Base Box.
20
Tower Mount Installation
© 2005-2009 SR Research Ltd.
Figure 3-7: Fiber Optic Camera in the Tower Mount
3.3
Adjusting Head Rest Components
The height of the forehead and chinrest can be adjusted by loosening the knobs on both
sides of the Tower. After sliding the chinrest to the desired position, re-tighten the
knobs.
y
Set up the monitor and chinrest so that the chinrest is centered on the monitor and
the monitor is horizontally aligned with the chinrest (HINT: measure from the left
and right knobs on the chinrest to the left and right sides of the top of the display
area of the monitor, these should be equal).
y
Adjust the tilt of the monitor and height of the forehead rest. Ideally these should be
set so that the top of the display is at about the same height as the forehead rest,
and the display is tilted up slightly. The tilt can be changed if there are any
reflection issues. Please follow “Section 8.4 Customizing Your PHYSICAL.INI
Settings” to modify the PHYSICAL.INI file settings.
Continue to Chapter 8 “Testing the Host PC Installation”
Tower Mount Installation
© 2005-2009 SR Research Ltd.
21
4.
Desktop Mount / EyeLink Remote Installation
Please follow the steps below to set up the EyeLink 1000 Desktop Mount. Figure 4-1
illustrates adjustable parts of the EyeLink 1000 Desktop Mount, using a Standard
Camera.
Figure 4-1: EyeLink 1000 Desktop Mount Components
4.1
Mounting the EyeLink 1000 High-Speed Camera and Cabling
The EyeLink 1000 Desktop and Long Range Mounts can be configured to track eye
movements up to 2000 Hz monocularly or 1000 Hz binocularly (with the 2000 Hz
camera upgrade). The angle of the camera should be adjusted differently depending on
the mount type you plan to use. Each mount type works optimally with different
camera lenses (see Table 1).
Figure 4-2: Desktop Mount Camera Adjustment
22
Desktop Mount / EyeLink Remote Installation
© 2005-2009 SR Research Ltd.
Follow the steps below to mount the high-speed camera for monocular tracking or to
use the EyeLink Remote – in the Camera Level position (see Figure 4-3):
1. Place the Desktop Mount on the table. Turn the recommended camera lens into
the thread on the Standard Camera or the Fiber Optic Camera Head. See Table
1 for recommended lens usage. The 35 mm lens is recommended for the
Desktop Mount monocular setup whereas the 16 mm lens should be exclusively
used for the Remote tracking.
2. Move the camera screw to the top end of the slot on the Desktop Mount.
3. Hold the camera with its elongation parallel to the table (and level with the top of
the mount), align the hole on the camera to the camera screw on desktop
mount, and then tighten the camera screw. Dimples in the camera align with
protrusions on the mount to ensure the camera is in the right position. If you
are using the Fiber Optic Camera, make sure the fiber optic cable is not twisted
or bent.
Figure 4-3: Camera Level Position for Remote and
Stabilized Monocular Recording
For binocular tracking (see Figure 4-4):
1. Place the Desktop Mount on the table. Turn the 25 mm camera lens into the
thread on the Standard Camera or the Fiber Optic Camera Head. See Table 1 for
recommended lens usage.
2. Move the camera screw to the bottom end of the slot on the Desktop Mount.
3. Hold the camera with its elongation forming a 45-degree angle relative to the
table. Align the hole on the camera to the camera screw on desktop stand, and
then tighten the camera screw. Dimples in the camera align with protrusions on
the mount to ensure the camera is in the right position. If you are using the
Fiber Optic Camera, make sure the fiber optic cable is not twisted or bent.
Desktop Mount / EyeLink Remote Installation
© 2005-2009 SR Research Ltd.
23
Figure 4-4: Camera Angled Position for Stabilized
Binocular and Monocular Recording
4.1.1 Cabling for the Standard Camera
After the camera is mounted onto the Desktop Mount, connect the two illuminator
cables that come out of the Desktop mount to the left side of the EyeLink 1000 highspeed camera. Connect the EyeLink 1000 power supply that was provided with your
system to the power connector on the left side of the camera (see Figure 4-5).
Figure 4-5: Camera and Illuminator Cables from
Desktop Mount
4.1.2 Cabling for the Fiber Optic Camera
After the Camera Adapter with the Camera Head and lens are mounted onto the
Desktop Mount, connect the two illuminator plugs emerging from the mount into the
3.5 mm (1/8”) mini-plug sockets of the Integrated Extension Cable.
24
Desktop Mount / EyeLink Remote Installation
© 2005-2009 SR Research Ltd.
If you haven’t already, connect the 5V pressure-release power supply connectors to the
Camera Head – note one of the power connectors is unused. Connect the fiber optic
cable from the Integrated Extension Cable to the Camera Head. Now connect the
EyeLink 1000 power supply that was provided with your system to the power connector
on the Camera Base Box.
Figure 4-6: Fiber Optic Camera in the Desktop Mount
viewed from the front (left) and rear (right)
4.2
Adjusting the Desktop Mount (Monocular, Binocular and Remote
Recording)
Place the Desktop Mount on the table at a distance between 40 and 70 cm from the
participant’s eyes, with the illuminator and eye camera facing the participant; the
recommended tracking distance is 50 to 55 cm. The camera screw of the Desktop
Mount should be aligned to the center of the display PC monitor and the top of the
illuminator should be as close to the lower edge of the visible part of the monitor to
maximize the eye tracking range.
If you are using the chin rest supplied by SR Research Ltd., please check whether the
table is suitable for mounting the chin rest – the table used should have a minimum
thickness of 1.8 cm and a maximum thickness of 8.0 cm. Loosen the table clamp by
turning the knob counterclockwise, place the table clamp fully onto the table, and then
tighten it clockwise (see Figure 3-2). Check that it is firmly secured by gently attempting
to rock the table clamp base free. If the table clamp base wobbles, tighten it further.
Next, place the forehead rest over the chinrest poles and tighten the knobs at the
desired height.
Please check that the chinrest is horizontally centered with the monitor. Adjust the tilt
of the monitor so that the display is tilted up slightly. The tilt can be changed if there
are any reflection issues. Please follow “Section 8.4 Customizing Your PHYSICAL.INI
Settings” to modify the PHYSICAL.INI file settings.
Desktop Mount / EyeLink Remote Installation
© 2005-2009 SR Research Ltd.
25
4.3
EyeLink Remote Hardware Adjustment for the Desktop Mount
The default version of the EyeLink Remote uses the Desktop Mount and an EyeLink
1000 High-Speed Camera programmed for Remote viewing. Users who are exclusively
interested in installing the EyeLink Remote should first follow installation instructions
for the Desktop Mount, then continue below.
To use the EyeLink 1000 in remote mode, the viewer is ideally about 60-70 cm from the
display surface. The height of the monitor should be set so that when the participant is
seated and looking straight ahead, they are looking vertically at the middle to top 75%
of the monitor. Once you have set up the system, make sure you have updated
PHYSICAL.INI, which is located at C:\EL1000\EXE folder of the Host PC. Please follow
“Section 8.4 Customizing Your PHYSICAL.INI Settings” to modify the PHYSICAL.INI file
settings.
Check whether the camera is set to the Level position – the elongation of the camera
should be parallel to the table (see section 4.1 “Mounting the EyeLink 1000 High-Speed
Camera”). Place the eye tracker right in front of the monitor; the camera screw should
be horizontally aligned to the center of the monitor. To maximize the eye tracking range,
the eye tracker should be raised so that the top of the illuminator is as close as possible
to the lower edge of the visible part of the monitor without blocking the subject’s view.
Internally, the eye tracker software was designed to perform based on this
recommended setup. Variability by a couple of centimeters will not have an impact on
the tracker accuracy while a larger deviation from the recommended settings may cause
performance issues. Contact SR Research Ltd. For extra setup information if your
experiment requires substantial deviation from the above guidelines.
Continue to Chapter 8 “Testing the Host PC Installation”
26
Desktop Mount / EyeLink Remote Installation
© 2005-2009 SR Research Ltd.
5.
LCD Arm Mount Installation
Please follow the steps below to set up the EyeLink 1000 LCD Arm Mount. Figure 5-1
illustrates a typical LCD Arm Mount setup and Figure 5-2 illustrates parts of the
EyeLink 1000 LCD Arm Mount as it ships from SR Research under its standard
configuration. The mount first requires fixing the Arm Base to a sturdy tabletop,
assembling the LCD Arm components, attaching the EyeLink High-Speed Camera and
then attaching cables. The following instructions detail each of these procedures.
The contents of the Figure in clockwise direction, starting at the top, are: the Camera
and LCD Assembly, three Velcro strips (rolled and piled), cabling emerging from the end
of the LCD Arm (which runs diagonally throughout the photo), the Arm Base, two Lshaped Imperial Allen wrenches, 2.5” and 6” extender tubes, the LCD Arm, and two
angled brackets. Not shown in the photo are pieces of the monitor that allow it to be
used with a traditional monitor mount should the user ever wish to remove it from the
LCD Arm Mount for conventional use, the monitor driver CD and instruction booklet,
and extension cables (SVGA, audio and power).
Figure 5-1: Typical EyeLink 1000 LCD Arm Mount
Installation
LCD Arm Mount Installation
© 2005-2009 SR Research Ltd.
27
Figure 5-2: EyeLink 1000 LCD Arm Mount
Components: LCD Arm Mount Base, Arm, Camera and
LCD Assembly
5.1
Choosing a Table
Before mounting the LCD Arm, and the Camera and LCD Assembly, the Arm Base (see
Figure 5-2 and Figure 5-3) must be affixed to a sturdy table. The Arm Base can
accommodate tables with a thickness of up to 75 mm (7.5 cm, 2.5”) at a depth of 18
mm to 65 mm (1.8-65 cm, 1.25”). The footprint of the Arm Base above the table is 160
mm wide x 140 mm deep (16 cm or 6 ¼” X 14 cm or 5 ½”) and requires further
clearance for the LCD Arm to swing in any direction.
The minimum depth for mounting on the table underside with which the system can
work is an 18 mm ledge (in which case the maximum table thickness is 60 mm – 6 cm
or 2 3/8”).
The LCD Arm Mount can displace the Camera and Monitor Assembly from 11 cm below
the surface level of the table to which it is mounted, to 23 cm above it. This places the
bottom of the monitor from 2 cm below the table surface to 32 cm above it. Two LCD
28
LCD Arm Mount Installation
© 2005-2009 SR Research Ltd.
Arm extender units are shipped with the mount that can displace these measurements
upwards by a further 6, 15 or together 21 cm (for a dynamic range of -11 to 44 cm, or
considering the bottom of the display -2 cm to 53 cm). The LCD Arm can extend a
distance of 75 cm from the base in any direction, with a minimal extension of 48 cm.
The desired viewing level of the participant should be combined with the above values
when considering the table on which to mount the Arm Base. If the participant viewinglevel is greatly below the tabletop surface then a lower table to mount the Arm Base
may be required.
5.2
Affixing the Arm Base to a Tabletop
There are two different configurations of the Arm Base, illustrated in Figure 5-3. On the
left of Figure 5-3 is the configuration of the base for a table that can accept the shim at
a deep position under its surface. This may be required if there is a lip at the table’s
edge, and is the default configuration that the system generally ships with. The bolt is
fully tightened when the unit is shipped and places pressure against a shiny steel shim
that abuts against the underside of the table.
Be careful while handling the Arm Base’s shim as it may have sharp
edges around it centermost hole.
The Arm Base configuration on the right of Figure 5-3 works with tables that have only
a narrow ledge on the underside (as small as 18 mm, accommodating tabletop heights
of 60 mm – 6 cm or 2 3/8”). This configuration is created by removing the long bolt that
presses against the shim, loosening the screw at the bottom of the base, reorienting the
L-shaped bracket so that the short portion is now perpendicular to the base, and
screwing the bracket back to the base. The bolt must now be turned through the short
portion of the L-shaped bracket in order to meet and apply pressure to the shim on the
underside of the table. Some light viscosity oil may make the turning of the bolt go more
smoothly, but keep in mind that oil will result in discoloration of the paint on the LCD
Arm Turn the bolt through without using oil if possible.
To install the Arm Base, use the large supplied L-shaped Allen wrench to unscrew the
black bolt that has a hexagonal opening in its end. It will have to be unscrewed enough
to allow the shim perched on its end to fit under the table edge, as the shim will
eventually be the point of contact between the bottom side of the Arm Base and the
underside of the table. The large underside of the Arm Base will be the point of contact
with the Table’s top. Place the base in position, covering the biggest surface area of the
table as possible and with the shim as deeply under the table as possible. With the
center hole of the shim on top of the bolt, begin to tighten the bolt while holding the
shim so that it does not fall off of the bolt. Pressure will eventually hold the shim in
place. Tighten as securely as possible.
LCD Arm Mount Installation
© 2005-2009 SR Research Ltd.
29
Figure 5-3: Two Configurations of the LCD Arm Mount
Base
5.3
Assembling the LCD Arm Components
Once the Arm Base has been secured to a sturdy tabletop, it is time to insert the LCD
Arm into the Arm Base. At this point you may wish to add one or both of the Arm
Extenders that were included with the system (2.5” and 6” extenders – 6 cm and 15 cm)
as these raise the overall height of the LCD Arm Mount. Note that using an extender
will also raise the lowest point that the LCD Arm Mount’s monitor can reach as they
simply displace the entire unit vertically. The extender shaft simply fits into the silver
cup of the Arm Base or into the cup of another extender.
Pick up the LCD Arm with one hand on each of the components to minimize its
components from swinging. The round silver shaft at the bottom of the arm fits into the
silver cup at the top of the Arm Base (or one of the optional extenders already inserted
into the Arm Base) – simply lower the LCD Arm straight into the cup, with cabling off to
the side of the base that is closest to the Display or Host PC to which the cabling will
eventually be attached. Several pieces of double-side Velcro ship with the LCD Arm
Mount in order to assist users who may wish to wrap the Velcro around the arm
components to secure it before lifting. This can prevent the arm from swinging while it
is being moved.
30
LCD Arm Mount Installation
© 2005-2009 SR Research Ltd.
The EyeLink 1000 LCD Arm Mount’s Camera and LCD Assembly holds an LCD
computer monitor, the EyeLink 1000 high-speed camera in the level position, and an
infrared illuminator light source. These are affixed as a single unit that can be easily
lifted using handles that are attached to each side of the LCD monitor. Facing the back
of the monitor, grip the handles and guide the shaft of the tilter mechanism into the
hole at the top end of the arm. Gently wiggle the assembly until the shaft is fully
inserted into the arm.
Some configurations of the LCD Arm may require weights at the end of
the table opposite the Arm Base, to offset the weight of the LCD Arm
apparatus.
The LCD Arm is fairly heavy, with the entire apparatus weighing in at approximately 11
kg (or 25 lbs). Some possible configurations of the LCD Arm extend the monitor over
empty space away from the table’s edge, placing the weight of the Camera and Monitor
Assembly away from the support of the table. To prevent tipping, the table needs to be
large, heavy and sturdy, or weighted at the end opposite from which the LCD Arm will
extend. Caution should be used when first testing the range of the LCD Arm in case the
table is not strong enough to properly distribute the weight of the apparatus. If the table
begins to tip while extending the LCD Arm out into space away from the table, place the
Arm apparatus back above the table surface and add weight (e.g., the Display
computer?) to the table surface opposite where the Arm is extending. Repeat this
procedure until it is clear that the apparatus is stable.
5.4
Mounting the EyeLink 1000 High-Speed Camera
The EyeLink 1000 LCD Arm Mount requires that the EyeLink 1000 Camera be
attached. It may have already shipped this way, or you may have to attach a camera
that was part of a different mounting system.
The Standard EyeLink 1000 Camera. To affix the Standard EyeLink 1000 camera, first
remove the cover that obscures the camera and illuminator from the bottom front of the
Camera and LCD Assembly. Two thumbscrews on the underside of the assembly hold
the cover in place – simply loosen the thumbscrews and the cover will slide off in the
forward direction.
Although not essential, it may be convenient to attach the CameraLink cable that
emerges from the LCD Arm to the back of the camera before attaching the camera. This
is an opportune point to attach this cable because once the camera is attached there is
not a lot of space between the cable interface on the back of the camera and the bracket
holding the camera (see top of Figure 5-4). The CameraLink cable is a D shaped cable
LCD Arm Mount Installation
© 2005-2009 SR Research Ltd.
31
that can only go in one orientation, and requires thumbscrews to be tightened to assure
a good connection. The thumbscrews are also slotted so that a slotted screwdriver can
be used to tighten the screws if your thumbs are not strong enough to do the job.
The Fiber Optic Camera. Put the Camera Head into the Camera Adaptor. Plug the fiber
optic extension cable (either a single cable or part of the Integrated Extension Cable)
into the Camera Head along with the 5V pressure-sensitive power connector. Plug the
illuminator 3.5 mm (1/8”) mini-plugs that emerge from the LCD Arm’s illuminator
(male) into the sockets emerging from the LCD Arm or from the Integrated Extension
Cable (female). The other end of the fiber optic cable and illuminator mini-plugs will
plug into the Camera Base Box.
All EyeLink 1000 Cameras. Mount the camera on the LCD assembly. On the front of the
camera is a threaded hole that the camera screw from the LCD Arm Mount will go into.
This will secure the camera. A knob is attached to the opposite side of the camera screw
so that it is easy to turn the screw into the camera hole. If there is not enough room for
the camera between the monitor and the camera assembly then more space can be
gained by moving the assembly further from the monitor. Undo the hex bolts holding
the bracket with the camera assembly to the monitor and move this forward (1 or 2 sets
of holes) until there is enough room for the camera to slip in between the monitor and
the camera assembly. Retighten the hex bolts and then proceed to attach the camera to
the LCD assembly.
Dimples on the camera fit into protrusions on the mount in order to ensure the right
positioning of the camera, which should be aligned level with the top surface of the part
of the mount holding the camera screw. Tighten the knob until the camera is secured.
Next replace the cover by sliding the slots on the cover’s bottom around the
thumbscrews on the underside of the assembly. Tighten the thumbscrews and adjust
the cover so that it is minimally obscuring the IR illuminator and the camera.
32
LCD Arm Mount Installation
© 2005-2009 SR Research Ltd.
Figure 5-4: Rearview of the LCD Arm Mount’s Camera
(top) and LCD Monitor (bottom)
5.5
Attaching the Cables
Integrated into the LCD Arm Mount is the cabling required for the EyeLink 1000 system
and the computer monitor (camera and LCD monitor power cables, monitor audio
cable, SVGA video cable, and the CameraLink cable). After assembling the LCD Arm
Mount components, inserting the LCD Arm into the Arm Base, and attaching the
camera, all of the cables need to be connected.
For all cables emerging from the LCD Arm, location descriptions assume a view of the
Camera and LCD Assembly from the back underside of the monitor (see Figure 5-4,
bottom). Guide the cables to the side of the camera and illuminator support bracket to
which the cable will eventually be attached – this will prevent the cable from binding
against the bracket when the LCD Arm is twisted in various directions. Follow these
steps:
1. First, let’s deal with cables attached to the high-speed camera (Figure 5-4 top).
•
If not already connected before affixing the camera, connect the
CameraLink cable to the interface on the back of the camera that is
housed within the Camera and LCD Assembly. Tighten the screws by
thumb or use a slotted screwdriver to tighten. Attaching this cable before
attaching the camera to the assembly may be easier for some users.
•
Insert the round EyeLink 1000 power supply cable to the power
connector on the right side of the camera.
•
Ensure that the two illuminator cables are plugged into the side of the
EyeLink 1000 high-speed camera – placement is not important. These
cables are present on the Camera and LCD Assembly and do not emerge
from the LCD Arm.
2. The remaining cables emerging from the LCD Arm connect to the LCD monitor
as follows (Figure 5-4 bottom):
•
Insert the phono plug connector into the audio input jack on the bottom
centre of the LCD monitor of the Camera and LCD Assembly.
•
Connect the SVGA cable to the SVGA input on the right of the LCD
monitor. Tighten the screws by thumb or use a slotted screwdriver.
•
Connect the three-prong power cable into the LCD monitor power input
on the left side of the monitor.
LCD Arm Mount Installation
© 2005-2009 SR Research Ltd.
33
Figure 5-5: Cables Emerging from the Bottom of the
LCD Arm
3. The following cables coming out of the bottom of the LCD Arm (shown left-toright in Figure 5-5) are to be connected as described below. Extension cables are
supplied as indicated in the text above. The first cable is the camera high-speed
data cable and goes to the Host PC, the next two cables go to outputs on the
Display PC, and the final two go to a power source.
•
Connect the thick CameraLink cable emerging from the bottom of the
LCD Arm to the EyeLink card on the Host PC. Be sure to tighten the
thumbscrew connectors or use a slotted screwdriver to make a tight
connection.
•
Connect the supplied SVGA extension cable to the SVGA cable coming
out of the bottom of the LCD Arm Mount. The female end of the cable
coming from the LCD Arm attaches to a male connector on the extension.
The extension’s female end attaches to the Display PC video card output
port.
•
Connect the supplied audio cable extension (female end) to the 3.5 mm
(1/8”) mini-plug on the audio cable emerging from the bottom of the LCD
Arm. Insert the male end into the audio output jack on the Display PC.
•
Connect the supplied three-prong power cable (female end) to the camera
power supply (male end) that is attached to a cable coming from the
bottom of the LCD Arm. The male end plugs into a power source.
•
Connect the supplied three-prong power extension cable to the LCD
monitor’s power input and plug the male end into a power source. The
power supply in the monitor is 110/220 Hz so an adapter may be used
(supplied) for countries outside of North America and Japan if the
appropriate extension is not included.
4. One final cable needs to be attached. Connect one end of the Ethernet crossover
cable provided with your system to the Ethernet card port on the Host PC (make
sure it is connected to the EyeLink Ethernet port and not the Ethernet port that
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© 2005-2009 SR Research Ltd.
is built into the motherboard). Connect the other end of the Ethernet 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.
5.6
Adjusting the Tension Points on the LCD Arm
Occasionally through use of the LCD Arm some of the joints may loosen. Each joint can
have the tension adjusted so as to require more or less force to move. Loosening a joint
too much may make it so that it does not stay in the desired position, so tighter tension
is generally preferred. Tension adjustment points are indicated by hexagonal screws on
the LCD Arm and can be adjusted using the Allen wrenches supplied. Recall that all
hexagonal screws on the LCD Arm are in Imperial units.
5.7
LCD Arm Mount Adjustments for Monocular and Remote Recording
The EyeLink 1000 LCD Arm Mount can be used for highly accurate monocular
recording with head stabilization (in which case the LCD Arm Mount is merely an
alternative to the desktop or Tower Mount options) or in Remote mode without head
stabilization. In either case the EyeLink 1000 requires that some information about the
physical setup be pre-configured in an initialization file, PHYSICAL.INI. Regardless of
the mode of recording, PHYSICAL.INI setup for the LCD Arm Mount is identical to the
Desktop Mount and is covered in “Section 8.4 Customizing Your PHYSICAL.INI
Settings”. Keep in mind when using the LCD Arm Mount however, that for highest
accuracy, the viewing distance specified in PHYSICAL.INI should be used with the LCD
Arm Mount even though the LCD Arm may be dynamically adjusted on a per-user
basis.
LCD Arm Mount
Installation
5.8
users
should
proceed
to
Section
8:
Software
Disassembling and Transporting the LCD Arm Mount
The EyeLink 1000 LCD Arm Mount ships with three 60 cm double-sided Velcro straps
to aid in securing the Arm for lifting and disassembly. A recommended method of
securing the LCD Arm using the Velcro straps is presented in Figure 5-6. It is
recommended that two people participate in this task as the unit can be awkward to
handle and does contain some delicate equipment.
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35
Figure 5-6: Securing the LCD Arm for Disassembling
and Transporting
The weight of the LCD Arm with the Camera and LCD Assembly (approximately 11 kg,
or 25 lbs) can cause shaft and cup holder points to become tight due to the pressures
that the LCD Arm makes while moving the apparatus into various positions. Such
pressures make what on assembly amounts to merely lowering a shaft into a cup holder
not as easily reversed. On reversal the pieces need to be gently rocked back and forth to
wiggle them free. As the LCD Arm is fully loaded this requires the rocking of large
portions of the entire unit. To minimize the potential for damage, as many pieces as
possible may be removed before attempting to remove the Camera and LCD Assembly
from the LCD Arm, or the LCD Arm from the Arm Base. For instance, removing the
camera cover and camera is advised.
To disassemble the unit, one option is to lift the LCD Arm and Assembly together from
the Arm Base. A second option is to remove the Camera and LCD Assembly from the
LCD Arm first, and then to remove the LCD Arm itself from the Arm Base. In either
case, double-sided Velcro strapping can assist in securing parts of the LCD Arm to
make disassembly more manageable.
Once the LCD Arm has been removed from the Arm Base, removal of the Arm Base
involves loosening the bolt from applying pressure to the shim until the Arm Base can
slide freely off of the table. Be careful when handling the shim, as it may have sharp
edges created around the center hole from the pressure applied to it.
Important: It is recommended that
disassembling the LCD Arm Mount.
two
people
participate
in
Read these instructions through and prepare a place to put the
disassembled pieces before attempting disassembly.
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5.8.1 Option 1: Remove LCD Arm and Camera Assembly as a Unit
First fold the LCD Arm as pictured in Figure 5-6. The Camera and LCD Assembly can
be lowered so that the camera bracket is beneath the bottom limb of the LCD Arm.
Raising it slightly can put pressure on the cable cover which may mark the cover, so
some packing material may be inserted between these to prevent marking if desired.
Wrap Velcro (soft side against the LCD Arm is recommended) around the LCD Arm so
that it will not extend when lifted (see Figure 5-6). Although full LCD Arm extension is
prevented by the camera bracket pressing against the cable cover, the possibility exists
for body parts to become pinched.
The entire LCD Arm, with intact Monitor Assembly, can now be lifted from the Arm
Base. One person may need to apply downward pressure to the table while the other
does the lifting, so that the table is not merely lifted off the floor. Some wiggling of the
LCD Arm and its shaft may be required to make it come free from the Arm Base’s holder
cup. Once free the unit may feel top heavy, so be sure to have a strong grip. Gently
lower the unit onto an awaiting soft foam surface, such as the inside of a hard shell
case molded for transport and storage of the LCD Arm Mount.
5.8.2 Option 2: Remove Camera Assembly then Remove the LCD Arm
Fully extend the LCD Arm and ensure there is nothing preventing the upwards lifting of
the Camera and LCD Assembly. One person will have to steady the LCD Arm and put
downwards pressure on the top of the LCD Arm while the other person grabs onto the
monitor handles and lifts upwards. Some rocking of the Monitor Assembly back and
forth to dislodge it may be necessary.
Once free of the cup holder, the Camera and LCD Assembly can be placed on a hard
surface with the bracket making contact with the table. At this point the LCD Arm can
be removed from the Arm Base with one person applying downward pressure on the
table while the other person lifts up on and wiggles the LCD Arm free of the Arm Base.
Continue to Chapter 8 “Testing the Host PC Installation”
LCD Arm Mount Installation
© 2005-2009 SR Research Ltd.
37
6.
Primate Mount Installation
The EyeLink 1000 Primate Mount is a metal bracket that contains an illuminator for
use with the EyeLink 1000 camera. The camera is affixed to the top of the mount
pointing downwards and the researcher supplies an apparatus that will reflect a view of
the eyes up into the camera barrel while reflecting the infrared illumination onto the
face of the subject being tracked (see Figure 6-1). Typically this would involve the
researcher fixing a ‘hot mirror’ (a piece of glass that reflects infrared light while allowing
other wavelengths to pass through it) in front of the subject’s eyes. The subject can
thereby see visual stimuli being shown by looking through the hot mirror, while the
camera has a good view of the eyes. Typically the distance between the camera and
where the eye would be for monocular recording would be identical to the Tower mount
– 380 mm.
While the Primate Mount uses a similar set of metrics to the Tower Mount, it is
intended to be flexible and ready to install in a wide range of situations where a means
of head stabilization exists but the Tower or Desktop mounts are inappropriate. This
frequently occurs when research on eye movements is being performed on primates
with their head fixed, for instance by means of a Primate Chair. If the head is fixed
extremely solidly, pupil only tracking may be possible. Otherwise, as with the other
EyeLink 1000 mounting options, Pupil-CR mode is recommended.
Figure 6-1: Typical EyeLink 1000 Primate Mount
Installation
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© 2005-2009 SR Research Ltd.
6.1
Primate Mount Hardware Considerations
As experimental setups using this mount vary widely, following something akin to
Figure 6-1 is recommended, but other configurations are possible. The configuration
depicted assumes use of the 25 mm lens, but other lenses can be used for different
viewing distances. As with the Tower mount, but not with the other systems, there is
lots of room for movements of the hand in front of the body using the Primate Mount.
All system and optical components can be seen in the overall rear and side view
drawings. The optical axis is represented in Figure 6-1 by the thin dotted line. The
camera is placed above a 45° hot mirror which reflects IR light but is transparent to
visible light. The reflection of the IR light provides an image of the eye to the camera.
The subject views the stimulus source (such as a computer monitor) through the
mirror. The illuminator module is mounted and angled so as to illuminate the eye via
the mirror as well (the path from illuminator to eye is represented by the heavy broken
line).
The illuminator should be angled to maximize illumination of the eye while minimizing
bright spots and shadows on the face. For human subjects, this may require placing the
illuminator to the temporal side of the tracked eye to reduce nose and forehead bright
spots and shadows on the temporal side of the eye socket. The illuminator is normally
located significantly closer to the eye than in the Tower mount (typically ~180mm from
front of illuminator to eye). This distance results in an eye illumination level of ~1.0
mW/cm² at the eye (which is comfortable for extended viewing) with a reasonably-sized
corneal reflection.
The EyeLink 1000 illuminator bracket is designed to provide a rigid connection between
the illuminator module and the camera. This is essential for pupil-CR difference
tracking mode, as any motion of the illuminator relative to the camera will appear as
eye rotation artifacts. This is also true to a lesser extent for the pupil-only eye tracking
mode if the CR is positioned within the pupil itself. The camera attaches to the bracket
with a clamp knob and 3 indexing bumps for positive alignment. The camera may also
be attached to the bracket so that it is rotated by 180° to change the side of the bracket
the lens is on. The illuminator block attaches to the bracket with a single clamp knob in
a slot, allowing the distance from the illuminator to the eye to be changed to control
brightness and CR reflection size, and allowing the illuminator to be rotated to
maximize illumination. The LEDs used in the illuminator were selected for even
illumination, so angling the illuminator is not critical.
The illuminator consists of an array of 24 infrared LEDs mounted in a heatsink block.
The block also allows for a mounting of the assembly via an M8 thread in each side. It
is important that the illuminator be mounted to a substantial piece of metal to help cool
the illuminator as this will enhance light output. The IR LEDs emit at 910 nm, which
was selected for reduced visibility in dark-adapted conditions compared to typical 890
nm LEDs. The LED array is safe for viewing by humans at any distance (it passes the
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© 2005-2009 SR Research Ltd.
39
IEC 60825-1 standards by a factor of 3) at any distance. However distances of >160mm
from the eye (resulting in irradiance of <1.2mW/cm²) are recommended for long-term
viewing comfort.
The camera (either the Standard EyeLink 1000 Camera or the Fiber Optic Camera)
mounts to the top of the bracket using a clamp knob (M8 thread) and a set of dimples
on its front. This ensures that the camera cannot vibrate independently of the
illuminator. The camera also has 5 mounting holes on its sides: 2 near the center of the
camera’s sides, and 3 aligned with the optical center of the lens and sensor. These holes
take a standard 1/4”-20 screw (used on tripod and camera mounts). However, the hole
at the lens end of the camera may not be robust enough to mount the camera with the
illuminator bracket attached, especially if vibration is present.
It is recommended that the illuminator bracket be mounted to the head restraint
assembly using the 3 holes supplied near the camera mount. The long side of the
bracket should be oriented away from the subject to maximize head clearance. Once the
bracket is mounted, the illuminator and camera may be attached and re-oriented as
required. The camera may be installed with the lens on the left or right side of the
bracket, and the illuminator fitted as required to place the connector on the side
opposite the camera lens. The EyeLink configuration files may be modified to flip the
camera image as required to match any mirrors or orientation of the camera.
While the camera will accept most C-mount lenses, the performance of most lenses is
rather poor in infrared, with blurry or dark images resulting from lens coatings or nonoptimal design. The Standard Camera configuration uses a 25 mm focal length lens,
selected for high resolution and excellent IR performance. A similar 16 mm focal length
lens is available which will allow the camera to function properly when closer to the eye.
As with other EyeLink 1000 mounting options, the camera requires 12V power, and a
supplied 60 mm (24”) cable is connected from the camera to power the illuminator
module. A supplied ferrite choke on this cable must be on the end near the camera.
Finally, a high-speed camera cable is connected from the back of the camera to the
tracker Host PC.
To summarize the above points, when installing the primate system please keep the
following points in mind:
•
The camera should not be too close to the eye, as the pupil and corneal
reflection must be contained within the tracking window.
•
Bringing the illuminator closer to the eye will reduce noise but may cause
discomfort and increase pupil erosion by the corneal reflection.
•
Placing the illuminator too far from the eye will result in a dark image and noisy
data.
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Primate Mount Installation
© 2005-2009 SR Research Ltd.
•
The line from the illuminator to the eye should be at least 10° off axis from the
camera lens for proper imaging.
•
The illuminator should be attached to a robust metal support, as should the
camera. Preventing separate motion of the camera and illuminator due to
vibration is critical to prevent extraneous noise in the data. The metal will also
help to keep the illuminator cool, increasing its light output.
•
While it is possible to rotate the camera by 90°, this will swap X and Y pupil
position data. Contact SR Research for information about operating in this
configuration.
•
It is possible that an extra bright reflection may appear above the pupil in the
eye image, as the illuminator may directly light the eye as well as through the
mirror. A small baffle may be required to control this.
Continue to Chapter 8 “Testing the Host PC Installation”
Primate Mount Installation
© 2005-2009 SR Research Ltd.
41
7.
Long Range Mount Installation
The Long Range Mount consists of a Mounting Bar for the Camera Head and a
focusable Long Range Illuminator. These are affixed to the Mounting Bar using circular
clips that tighten onto the bar. The Camera Head and its mounting bracket attach to
the Camera Head clip at either a level or angled orientation, while the Long Range
Illuminator attaches to its clip in a flexible manner so that the illumination can be
adjusted to fit the tracking situation.
The Mounting Bar can in turn be fixed to a Base (pictured), a tripod (via a Tripod
Adapter), or some similarly stable source. The camera can be parallel with the top of the
Mounting Bar (the Level position) for monocular recording, or it can be rotated (the
Angled position) for monocular or binocular recording. The Illuminator can be tilted up
or down and swiveled around its vertical axis to assist in positioning. The entire
Mounting Bar can be positioned using the Base or tripod to which it is affixed. Figure
7-1 depicts the Long Range Mount with the Mounting Bar attached to a Base. The
Camera Head is on the left and the Long Range Illuminator is on the right. The Mount
comes with a Long Range Illuminator, three lenses (75, 50 and 35 mm) and a tripod
adapter (see Figure 7-1 right).
Figure 7-1: EyeLink 1000 Long Range Mount with
Camera Head (left) and as shipped (right)
The Camera Head and Illuminator are located at opposite ends of the Mounting Bar,
and each is secured to the bar using a round clip (see Figure 7-2) surrounding the
Mounting Bar that is tightened by turning a knob located on the back. When loosened,
the clips can slide along the Mounting Bar allowing the position of the Camera Head or
illuminator to be adjusted.
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Long Range Mount Installation
© 2005-2009 SR Research Ltd.
Figure 7-2: Mounting Bar and Clips-note Guide Pins on
the Camera Head clip (left)
The typical position for the Camera Head will be on the left side of the Mounting Bar
with the illuminator on the right side (when facing the Camera Head and Illuminator,
such as in Figure 7-1), though the mount is designed so that the illuminator could be
on the left and the Camera Head on the right. With the Camera Head on the left side of
the Mounting Bar, the cabling coming from it and the illuminator are directed toward
the center of the mount where they can be secured and exit.
7.1
Mounting the EyeLink 1000 Fiber Optic Camera Head
The Fiber Optic Camera Head first attaches to a bracket that has several guide holes
oriented at a right angle to the camera (rightmost image of Figure 7-3). The holes
interface with guide pins on the Camera Head Clip, pictured at the left of Figure 7-2.
The left image of Figure 7-3 shows the Camera Head by itself, the center image shows
the Camera Head attached to the bracket with small brass thumbscrews, and on the
right, another view of the Camera Head attached to the bracket which will determine its
position on the mount.
Figure 7-3: Fiber Optic Camera Head with lens (left),
attached to the Bracket (center), Guide Holes in the
Bracket accept Guide Pins from Camera Head Clip
(right)
Guide pins on the Camera Head Clip slide into guide holes on the Camera Head Bracket
to determine its orientation (pictured right side of Figure 7-3). When the pins are in the
Long Range Mount Installation
© 2005-2009 SR Research Ltd.
43
center set of holes the camera will be horizontally oriented and parallel with the
Mounting Bar (the Camera Level position). When the holes are aligned diagonally with
the guide pins, the camera will be oriented as required for binocular recording (the
Camera Angled position).
The top part of Figure 7-4 shows the bracket attached to the Mounting Bar without the
camera, in the horizontal or Level position for monocular recording (left) and Angled for
binocular recording (right). The bottom of Figure 7-4 shows the Camera Head attached
to the bracket and the bracket attached to the Camera Head clip on the Mounting Bar.
With the lens cap on to avoid dirtying the lens, turn a 35, 50 or 75 mm camera lens into
the thread on the Camera Head. See Table 1 of the current manual, for
recommendations on which lens to use for the eye to camera distance that you desire.
In general, the larger the lens, the greater the magnification and the longer the eye to
camera distance that can be used.
To mount the Camera Head, first attach the Camera Head Bracket to the bottom of the
Camera Head as in Figure 7-3 (right) using the brass thumbscrews. Next align the holes
on the bracket with the pins on the Mounting Bar’s Camera clip in either the Level or
Angled position. Note that the cables should emerge from the right side of the Camera
Head as shown in Figure 7-4. If not, you’ll need to attach the Bracket to the other side
of the Camera Head. Turn the knob on the back of the clip so that it threads into the
Bracket. As the knob is tightened the Camera Head will become immobile.
The Camera Head is fixed in its position and its clip does not rotate around the bar.
Figure 7-4: Bracket in the Level Position (left) and
Angled (right) – without the Camera Head (top) and
with the Camera Head (bottom)
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7.2
Mounting the Illuminator
Hold the illuminator with the power cable leading from the left. Place one brass
thumbscrew under the middle hole on the illuminator through the Illuminator
Mounting Clip (right side of Figure 7-2) and tighten it from underneath. Figure 7-5, left,
shows the view from beneath. Note there are black thumbscrews holding the illuminator
cover on – these are not involved in mounting the illuminator but will be used at a later
step.
Figure 7-5: Illuminator attached using two brass
thumbscrews (left), rotates around the Mounting Bar
when the knob is released (right)
Figure 7-6: Tripod Adapter (left), Base (middle) and
Mounting Bar attached to the Tripod Adapter using
Two Brass Bolts (right)
The illuminator can swivel around its middle screw on the vertical axis, allowing it to
point at a number of different angles to the left or right of center. A second brass
thumbscrew is used to hold the illuminator in place and can be threaded into either of
the remaining holes. The most peripheral hole is easiest to access and so is
recommended, though the hole that is more interior allows more acute angling of the
illuminator. Thread the second thumbscrew in place, but do not completely tighten it as
it will need adjusting momentarily.
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45
7.3
Affixing the Long Range Mount’s Mounting Bar
The Mounting Bar is intended to be fixed to the supplied Base, or to a tripod (using the
supplied Tripod Adapter), or some other solid source supplied by the user. The Tripod
Adapter and Base are shown in Figure 7-6. The Mounting Bar itself attaches to the
Base or the Adapter using two brass bolts (Figure 7-6, right) that can be found beneath
small plastic covers. Simply pry the plastic covers free with fingernails to avoid
scratching them or the mount, and use a flat, slotted screwdriver to remove the
Mounting Bar. The Tripod Adapter has a standard ¼ inch thread in the bottom (Figure
7-6, left) for use with standard tripods. The Adapter’s top has two holes to bolt the
Mounting Bar to.
7.4
Cabling for Long Range Mount
Connect the 5V pressure-release power connector to the Camera Head. The other
pressure-release power connector should be connected to the illuminator. If not already
completed, connect the fiber optic cable to the fiber optic extension cable through the
connector. The other end of the fiber optic cable goes to the Camera Base Box which
should be affixed to the back, left side of your Host PC. Ensure that the 12V EyeLink
1000 power supply is connected to the power connector on the Camera Base Box.
7.5
Long Range Mount Camera Setup
Follow these steps to set up the camera and the Long Range Mount for monocular
tracking. The first few steps require knowing the eye to camera distance, which is
measured from the surface of the Camera Head to the bridge of the participant’s nose in
centimeters.
1) Place the Mount at an intended distance and position. The Long Range mount
should ideally be placed at a distance between 50 and 150 cm from the
participant’s eyes, with the illuminator and camera facing the participant.
The mount should be aligned to the center of the display, and raised as high
as possible to maximize the eye tracking range without blocking the subject’s
view of the bottom part of the display.
2) Determine which lens is most appropriate. Based on the eye to camera
distance, use the Lens Guide (Table 1) to determine the lens to use. Screw
the small end of the lens into the threaded Camera Head. Please follow
“Section 8.4 Customizing Your PHYSICAL.INI Settings” to update the
distance and the dimensions of the tracked area in the physical.ini file (note
that all of the measurements in the file are done in millimeters).
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© 2005-2009 SR Research Ltd.
3) Check the Camera Head and Illuminator Separation. The further away the
mount is from the eye, the greater the ideal separation of the camera and
illuminator. On the top of the mount are markings that indicate the
appropriate locations on the Mounting Bar for the inner edges of the Camera
Head and Illuminator, based on different eye to camera distances. Loosen
the knobs holding the Camera Head and illuminator Clips to the Mounting
Bar, adjust the clip positions so the inner edges align with the appropriate
distance and then tighten the knobs.
4) Focus the Illuminator. The illuminator has a lens on it that will focus the
infrared light at different distances. Without removing the black
thumbscrews (see Figure 7-7 left) on the underside of the illuminator –
loosen them so that the illuminator cover will slide back and forth to reveal
an illuminator distance scale. Sliding the cover forward will reveal markings
on the scale from 60 cm at the closest eye to camera distance to 150 cm at
the furthest (see sticker in Figure 7-7 right). Adjust the cover so that its edge
aligns with the marking that approximates your eye to camera distance and
then tighten the black thumbscrews.
Figure 7-7: Focusing the Illuminator
5) Check that the Camera Head is Horizontal. The elongation of the camera
should be parallel to Mounting Bar for a monocular recording. If not, please
loosen the knob holding the camera to the Mounting bar and align the small
brass pins that protrude from the mount so that they fit into the middle two
holes on the Camera Head. Tighten the knob securely and the camera is now
in the ‘Level’ position.
6) Check Host Software Configuration. Start the EyeLink Host PC application
and click “Set Options” button. Check that the “Configuration” is set to
“Long Range Mount (Monocular)”. Then navigate to the “Camera Setup”
screen. You may also wish to start a program on the Display PC (e.g., the
sample program TRACK.EXE in the SR Research directory) and transfer the
camera image during this stage if it provides a convenient view of the global
camera image.
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47
Figure 7-8: Pointing the Camera-visible illumination
boundary (left) and fully illuminated target (right)
7) Point the Camera and Roughly Focus the Lens. A Target Screen was supplied
with your system to provide you with a target to locate. This will provide a
target to find with the camera and will assist in determining that the eyes
are properly illuminated by providing a screen to project the illumination
onto. Place the circular target at the location where the subject’s real eye(s)
will be. With the EyeLink 1000 Host application running, point the Camera
Head at the Target and locate it by monitoring the global view on the Host
PC’s “Camera Setup” screen (e.g., the left image of Figure 7-8), or a
transferred global image on the Display PC. The Camera Head itself is
immobile, but the entire Mounting Bar can be moved by adjusting the Base
or Tripod. While watching the global image, turn the lens wheel so that the
image becomes clearer – it does not have to be perfect at this stage.
Note that when monocularly tracking the eye of an actual subject, the
camera should ideally have only the image of the eye to be tracked in its
view, with the non-tracked eye off the camera image. If this is not the case,
there is a risk that the eye tracker will switch the eye being tracked. This can
be prevented by turning search limits on (the USE SEARCH LIMITS button
on the Host PC), but initial camera placement with only one eye visible will
guarantee that inadvertent switching of the tracked eye will not occur.
8) Check the Orientation of the Camera Image. If the camera image is vertically
button to the right of the
flipped, this can be corrected by pressing the
global camera view. If the camera image is horizontally flipped, this can be
corrected by pressing the
button on the left to rotate the camera image
90° and then click on the vertical flip button.
9) Align the Illuminator and Camera. The next step is to ensure that the center
of the infrared illuminated area is roughly in the center of the camera’s field
of view. The illuminator can be angled on the horizontal plane (axial plane,
or transverse plane) depending upon where it is placed when two brass
thumbscrews holding it to the mount are tightened. The illuminator can also
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be tilted up and down by finely adjusting rotation of the clip that holds it to
the Mounting Bar.
•
As humans do not see infrared, a good approach is to shine the
illuminator at the Target Screen at the distance where the participant’s
eye(s) will be and to check the bounds of the illuminated area by
watching the global view that the camera has of the area. The boundaries
of the illumination will show with distinctly different threshold coloring
in the illuminated versus non-illuminated locations. The amount of
thresholding displayed on the global view can be adjusted up or down by
pressing the + or – keys on either the Host or Display PC keyboards.
•
While monitoring the global camera view, adjust the illuminator up and
down by rotating the clip around the Mounting Bar so that the Target
Screen is brightly illuminated and the bulk of the illumination appears in
the center of the Screen on the vertical – tighten the knob holding the
illuminator to the Mounting Bar to secure the position. The brightly
illuminated region will be grayscale, while the region in the infrared dark
will be threshold colored. The left side of Figure 7-8 illustrates the
boundary of illumination in the global camera view – the illuminator
would need to be shifted in this case so that the entire target is
illuminated as in the right side of Figure 7-8.
•
By swiveling the illuminator around the center thumbscrew, adjust the
angle of the illuminator on the horizontal plane so that the Targets are
brightly illuminated. There is a range of positions in which the outermost
thumbscrew can be tightened. First tighten the center thumbscrew so
that it still allows some movement when the outermost thumbscrew is
loose. After centering the illumination in the camera field of view, tighten
the outermost thumbscrew and then securely tighten the center
thumbscrew.
10) Select the Eye to Track and Adjust Thresholds. In the global camera view
move the Host PC mouse cursor on top of the pupil position and double click
on the left mouse button. The camera image for the eye should now be
displayed in the zoomed view. If the pupil is detected, a green box and the
cross will also be drawn on the pupil. Use the left or right cursor key to
select the zoomed camera view. Adjust the camera focusing by turning the
focusing ring at the front of the lens. You may do the adjustment from the
side opposite to the illuminator to prevent the camera image or the
illumination to the eye from being blocked. Look closely at the eye image on
the zoomed view while turning the focusing ring until the eye image is clear.
If a colored circle (CR signal) appears near the pupil, the best focus will
minimize the size of this circle.
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49
Camera Setup for binocular tracking is essentially the same as described above except
that:
1) The “Configuration” in the Set Options screen should be set to “Long
Range Mount (Binoc/Monoc)”;
2) The Camera Head orientation on the mount should be angled (see the
right panels in Figure 7-4);
3) When pointing the camera at the subject, both eyes should appear in the
global camera image – the dotted line in the global view should be aligned
with the bridge of the nose.
Please follow “Section 8.4 Customizing Your PHYSICAL.INI Settings” to modify the
PHYSICAL.INI file settings.
The system is now ready to test. Please see the tutorial in the User Manual, though you
may wish to skim the contents of Chapter 8 first.
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8.
Testing the Host PC Installation
If your system comes with a standard pre-installed Host PC, it should already have two
partitions installed: “EyeLink” and “Windows”. The EyeLink partition, which runs on a
DOS operating system, is for the operation of the eye tracker. This allows you to
perform subject setup, monitor performance, record data, and control experiments
running on the Display PC. The existing Windows operating system is still accessible so
that you can update the host software and back up data.
If you are preparing your own Host PC, please follow "Appendix B: Host PC Software
Installation Under Windows 2000/XP" or "Appendix C: Host PC Software Installation
Under Windows Vista" to create the EyeLink partition and install the Host software.
8.1
Running the EyeLink Host Program
Turn on the Host PC. If your system shows the “Windows Boot Manager” interface,
select the default “EyeLink” partition (see left side of Figure 8-1). The Host program will
start automatically. If you see a System Commander OS Selection screen, choose the
EyeLink partition by clicking on the OS icon (see right side of Figure 8-1). You should
see a C:\> prompt at the command line.
Figure 8-1: Booting into the EyeLink Partition
If the EyeLink 1000 Host application doesn’t start automatically, type the following in
the command prompt:
T ↵
The EyeLink 1000 Host PC application should start and you should see the EyeLink
1000 Host application screen illustrated in Figure 8-2. Please make sure that you are
using the latest version of the EyeLink 1000 Host application; the latest host software
can be downloaded from the SR Research support website http://www.sr-support.com.
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Click on the “Set Options” button and ensure that the “Mouse Simulation” button is
deselected as in Figure 8-3 (the button will not be solid in color). Next click on the
button marked “Setup Cameras” and if all is working well, you should see that the
camera is transmitting images to the Host application.
A screenshot of the large field of view of the EyeLink 1000 camera (Tower Mount) is
illustrated in Figure 8-2.
Please consult Chapter 3 “An EyeLink 1000 Tutorial: Running an Experiment” of the
EyeLink 1000 User Manual for tutorials on setting up the camera, calibration and
validation. But first, proceed with the Display PC setup in the following chapter.
Figure 8-2: Host Application Camera Setup Screen
Figure 8-3: Host PC Set Options Screen
8.2
Trouble Shooting Instructions
This section lists some of the error messages you may see when starting the host
software.
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8.2.1 SCD file does not exist
Each EyeLink 1000 system loads a camera-specific .SCD file. If you see the following
error when starting up the tracker, please ensure that “********.SCD” file is contained in
the ELCL\EXE directory.
ERROR: Camera data file ‘c:/ELCL/EXE/********.SCD’ does not exist
You can find the camera-specific .SCD file in the Host Partition \ ELCL \ EXE directory
of the EyeLink 1000 Software CD that came with your system. If you cannot locate this
file, please contact support@sr-research.com.
8.2.2 “No Hardware” error
The eye tracker reports the current network status between the Host PC and display
computer. If you see a “No Hardware” at the top-left corner of the Host Program, please
check whether the Ethernet card is properly seated.
8.2.3 EyeLink CL camera not found
Sometimes, the eye tracker will not start and the following “EyeLink CL camera
not found” error will be displayed in the command prompt.
EyeLink CL camera not found.
ERROR: EyeLink CL mode selected but hardware not operational:
Use the -x option to run in simulation mode.
This error could be caused by the following possibilities:
1) The power to the Standard Camera or Camera Base Box is not powered. Please
check the power cables and ensure the power light is glowing.
2) The camera link data cable is not properly connected to the framegrabber card
or to the camera, or the connection is loose. Try re-attaching the cable and using
the thumbscrews to fasten the connection.
3) The EyeLink 1000 framegrabber card is not fully seated in the card slot. Try
removing the card and plugging it back to the same slot or a different one.
8.2.4 ERROR: no sync found
The “no sync found!” error is typically caused by a loose data cable connection.
Try reattaching the cable and using the thumb screws to fasten the connection.
AQ_Start Error: Unable to detect frames
ERROR: no sync found!
AQ_STOP: Aborting acquisition
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8.2.5 Error: No Optilink head found.
The following error is only seen when a fiber optic camera is used.
Found Optilink CL base, serial number CL1-*****
ERROR: No Optilink head found: check link or power
ERROR: EyeLink 1000 mode selected but hardware not operational:
Use the -x option to run in simulation mode.
Check the power for the Fiber Optic Camera Head and ensure all fiber optic
cable connections are secure.
8.3
EyeLink Data Storage
All EDF files that are created during the recording phase of each experiment will be
saved to C:\ELCL\DATA. This is the default directory into which EyeLink recording files
(.EDF) are stored. If the DATA drive cannot be found, all EyeLink data files will be saved
into the C:\ELCL\EXE directory. It is recommended to periodically boot into the
Windows operating system to back up your data.
8.4
Customizing Your PHYSICAL.INI Settings
The EyeLink 1000 PHYSICAL.INI file at C:\ELCL\EXE directory contains settings that
tell the system about physical characteristics of your setup that are important for
proper visual angle and eye velocity calculations. Any time you change your physical
configuration (for example a new monitor is used, the eye-to-screen viewing distance is
changed, etc.) you should verify that the PHYSICAL.INI still accurately reflects your
setup.
The parameters in the PHYSICAL.INI file that change depending on the physical setup
of your system are:
screen_phys_coords – specifies the physical distance of the four edges of the
presentation surface to the center of the screen. The order of these measurements is
left, top, right, bottom and are specified in millimeters. For the default case of a 19”
monitor this parameter will read.
screen_phys_coords = -188.0, 146.0, 188.0, -146.0
screen_pixel_coords – specifies the resolution of the display surface. Normally the
EyeLink 1000 API at the start of an experiment programmatically adjusts this so you do
not need to manually change this setting. If the EyeLink 1000 programming API or
Experiment Builder is not being used, then the default value for this parameter will
apply. The default value reads.
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screen_pixel_coords = 0.0, 0.0, 1024.0, 768.0
screen_distance – specifies the distance to the top and bottom of the display surface
from the participant’s eye, respectively. This setting is not applicable to EyeLink remote
tracker. The default values read as following:
screen_distance = 600 660
8.4.1 Measuring screen_phys_coords
All screen physical coordinate measurements are in millimeters. It is recommended that
a straight ruler be used. Turn on both the EyeLink 1000 Host and Display PC and run
track.exe on the Display PC. Type in “TEST” for the saved EDF file name and click the
OK box. Press “Enter” on either keyboard twice.
On the Host PC go to “Set Options” on the screen and select “mouse simulation” mode.
This will now let you use the Host PC mouse to simulate eye movements. Check that
the Calibration Type is set to a nine-point pattern. Press “Previous Screen” button to
return to the Camera Setup screen.
Now press “C” or the calibration button. A calibration dot should appear on the middle
of the display monitor. Use this dot as the central reference point for all horizontal and
vertical PHYSICAL.INI measurements.
In the screen_phys_coords, measure the distance from the center of the dot to the end
of the active part of the monitor screen. Start on the left side (S1) and follow round to
the top (S2), right (S3) and bottom (S4). This is illustrated in Figure 8-4.
Figure 8-4: Measuring screen_phys_cords
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The new settings for the screen_phys_coords in the PHYSICAL.INI file are determined by
screen_phys_coords = -1, 2, 3, -4
8.4.2 Measuring screen_distance
Please follow the steps below to measure the “screen_distance” values. For EyeLink
Remote eye tracker, keep the default “screen_distance” value.
1. Set up the monitor and chinrest so that the chinrest is centered on the monitor and
the monitor is horizontally aligned with the chinrest (HINT: measure from the left
and right knobs on the chinrest to the left and right sides of the top of the display
area of the monitor, these should be equal).
2. Adjust the height and tilt of the monitor. Ideally this should have the top of the
display at about the same height as the forehead rest, and the display tilted up
slightly. The tilt can be changed if there are any reflection issues. Small amounts of
horizontal misalignment (turning of the monitor) may be tolerated if required to
reduce screen reflections, but this may reduce the accuracy of angular measures.
3. Now measure from the front of the forehead rest/Tower height adjustment knob (or
the subject’s eye position if using your own chin rest) to the point on the monitor
directly in front of the knob (lay the measuring tape across the top of the shaft of
the knob, and read distance from the front of the column). Measure from the knob
to the top of the visible part of the display area, then from the knob to the bottom of
the display area. These two values (in millimeters) should be your new
“screen_distance” command values.
8.4.3 Entering Values into PHYSICAL.INI
The newly acquired values for “screen_phys_coords” and “screen_distance” must now be
entered into the PHYSICAL.INI located on the Host PC. This can be done either from the
Windows partition or from the EyeLink partition.
8.4.3.1 Windows Partition
Boot into the Windows partition, find the EyeLink drive. Go to the “ELCL\EXE”
directory and select the PHYSICAL.INI file. Uncheck the "read-only" property of the file.
Modify the file and save the change.
8.4.3.2 EyeLink Partition
Reboot the Host PC into the EyeLink partition. Do not press “T” when in the DOS
prompt. If the host software is already running, closing the host software will
automatically bring you to “C:\ELCL\EXE” directory.
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From the command prompt type the following
CD C:\ELCL\EXE
ATTRIB –R PHYSICAL.INI
EDIT PHYSICAL.INI
To enter the new values, follow these steps
1. Go to the screen_distance parameter
2. Remove the default values for this command.
3. Enter new values
4. Repeat steps 1-3 for screen_phys_coords
5. Save changes and exit the file
Finish by typing the following at the command type
ATTRIB +R PHYSICAL.INI
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Display PC Software Installation
9.
The Display PC is used to run experiment application software for control of the
EyeLink 1000 tracker and stimulus presentation through the EyeLink Display Software.
This API is available on Windows, MacOS and Linux platforms. The latest version of the
display software can be downloaded from SR Research support website http://www.srsupport.com. The Display PC installation process should not take more than 15
minutes. Installation instructions for the Windows platform are detailed below.
9.1
Windows Installation
To use a Windows Display computer with the EyeLink 1000 system, various EyeLink
software components should be installed. The installation process consists of the
following basic steps:
•
Install the EyeLink Experiment Programming Kit.
•
Install the supplied IO Port Access Driver if planning to use TTL.
•
Install the EyeLink Data Viewer and / or Experiment Builder software (if
purchased).
•
Install the USB Key drivers for EyeLink Data Viewer and / or Experiment
Builder software (if purchased).
•
Configure the network connection to the EyeLink 1000 Host PC.
9.1.1 Installing the EyeLink 1000 Experiment Programming Kit
The Windows toolkit (API and example files) is available on the “EyeLink 1000 Software”
CD in the “Display PC Installation” directory. To install the toolkit:
1. Insert the “EyeLink 1000 Software” CD.
2. Open the “Display PC Installation → Windows” folder.
3. Run the EyeLinkDevKit_*.exe program by double clicking the icon.
4. Follow the instructions from the InstallShield Wizard to install the display
software.
5. Wait for the InstallShield Wizard to finish, and click FINISH to complete
installation.
9.1.2 Installing the IO Port Access Driver
For proper access to IO ports (i.e. for TTL signaling) on the Display PC, an access driver
must be installed. Note that this PORT95NT installer doesn’t run on any 64-bit versions
of Windows XP or Vista.
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1. To install the driver, click Start → Programs → SR Research → EyeLink →
Utilities → PORT95NT.
2. Follow the on screen instructions.
3. Reboot your computer when prompted.
9.1.3 Installing the EyeLink Data Viewer and Experiment Builder Software
The EyeLink Data Viewer and Experiment Builder software are optional Windows
applications for the EyeLink eye tracker. If you did not purchase these options this
section may be skipped, or you may install the software for evaluation in demo mode.
1. Insert the “EyeLink 1000 Software” CD.
2. Open the “Display PC Installation → Windows-> EyeLink Data Viewer” folder.
3. Run the EyeLinkDV_*.exe program by double clicking the icon.
4. Follow the instructions from the InstallShield Wizard to install the software.
5. Wait for the InstallShield Wizard to finish, and click FINISH to complete
installation.
6. Open the “Display PC Installation → Windows-> SR Research Experiment
Builder” folder
7. Run the SREB_*.exe program by double clicking the icon.
8. Follow the instructions from the InstallShield Wizard to install the software.
9. Wait for the InstallShield Wizard to finish, and click FINISH to complete
installation.
9.1.4 USB License Key Installation
If you purchased either the Data Viewer or Experiment Builder software, you will
have been provided with a USB license key with your order. To install the software
driver for the USB license key follow these steps:
1. From the Windows Start menu select “Start->All Programs -> SR Research ->
Install HASP Driver”. You may also try running both “HASPUserSetup.exe” and
“hdd32.exe” installers contained in the “C:\Program Files\SR
Research\Common” folder of the display computer.
2. Follow the instructions from the InstallShield Wizard to install the software.
3. Wait for the InstallShield Wizard to finish, and click FINISH to complete
installation.
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4. Insert the USB Key into an available USB port on the Display computer. The
USB key should start to glow red, indicating that the key has been recognized
by the system.
9.1.5 Setting up EyeLink 1000 Network Connection
You must have an Ethernet port in your Display Computer. Allow Windows to install
drivers for it (if it is new hardware), then follow these instructions to install and
configure the TCP/IP network protocol. These instructions are based on Windows XP;
other Windows operating systems may vary slightly.
1. From the Start menu select the Control Panel.
2. Click on the Network and Internet Connections icon, and then select the
Network Connections icon. Check the list of installed components to make sure
a network card is installed. If not, install a driver for the card.
3. Double click on the network card icon that represents the network card that will
be connected to the EyeLink 1000 Host PC.
4. Select the properties button.
5. Check that “TCP/IP” is displayed in the list of components and that it is
checked. If not, press the checkmark beside the option.
6. Select the “TCP/IP” component for the Ethernet card connected to the eye
tracker PC, then click on the “Properties” button.
7. Select the “Use the following IP address” radio button. Enter the IP address of
“100.1.1.2”. The last digit of the IP address can increase for other computers
on the EyeLink network. Enter the subnet mask of “255.255.255.0”. Leave the
default gateway and other settings blank.
8. Click on “OK” to return to the Properties dialog. Click “OK” again to save your
changes. Click “Close” to exit from the network card dialog.
If connectivity error messages appear ensure the supplied Ethernet crossover cable
connects the configured Ethernet port of the Disply PC to the supplied network card of
the Host PC. Alternatively, you may need to reinstall the network card drivers. To be
safe, open the Network dialog and remove all components, restart Windows, then install
the network card driver and the TCP/IP protocol again.
To test the network, start the EyeLink 1000 tracker and start the “Track” application
from “Start -> Programs -> SR Research -> EyeLink -> Track”. The link should connect,
and the screen will display instructions. This application allows you to practice
participant setup and test the system, as described in the EyeLink 1000 Installation
Guide. If the message “Cannot initialize link” appears, the TCP/IP protocol or crossover
cable is/are not properly configured. If the connection times out, it is probably due to
the network card being improperly configured or because the network cable is not
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connected to both PCs. On the Host PC, the Ethernet cable should be connected to the
Ethernet card we supplied (not to any other Ethernet ports!). The display of a "NO
HARDWARE" message in the "Camera Setup" screen indicates that tracker did not
reliably detect the Ethernet card. If you see this message, try re-seating the Ethernet
card or plugging it to a different slot.
9.1.6 System and Programming Tools Required
The C experiment templates in Windows Display Software package were developed
using Microsoft Visual C 6.0. Other 32-bit C and C++ compilers may be used, but you
will have to translate the included make files to rebuild the experiments. This release of
the Windows Display Software does not supply examples for C++ programming.
9.2
Mac OSX Installation
To use Mac OSX as a Display computer with the EyeLink 1000 system, various EyeLink
software components should be installed on the computer. The installation process
consists of the following basic steps:
•
Install the “Mac OSX Display Software”. The installer disk image is located in
the “Display PC Installation/Mac OSX” folder of the “EyeLink 1000 Software”
CD – the latest version of the software can be downloaded from SR Research
Support website (https://www.srsupport.com/forums/showthread.php?t=15).
Mount and open the disk image under MacOS, then click on the installer
and follow the instructions, using the default settings as prompted. The
EyeLink libraries, documentation and source code examples are installed in
the Applications:EyeLink folder.
•
Install the EyeLink Data Viewer. The installer disk image is located in the
“Display PC Installation/Mac OSX” folder of the “EyeLink 1000 Software” CD
– the latest version of the software can be downloaded from SR Research
Support website (https://www.srsupport.com/forums/showthread.php?t=10).
Mount and open the disk image under MacOS, then click on the installer
and follow the instructions, using the default settings as prompted. Data
Viewer is installed in the Applications:EyeLink DataViewer directory.
•
Install the USB HASP Key driver for EyeLink Data Viewer. Mount the
“Hdd_MacOSX.dmg” disk image to get access to the HASP driver installer.
Double click on the installer made available by the disk image and follow the
instructions, using the default settings as prompted.
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•
Configure the network connection to the EyeLink 1000 Host PC. Set the IP
address to 100.1.1.2 and subnet mask to 255.255.255.0. You can do this by
opening the System Preferences (Apple menu item, then select ‘System
Preferences…’) and click on the Network Icon. Next go to your computer’s
Built-In Ethernet device, select Manually on the Configure pop-up menu,
and enter the above IP address and subnet mask. Click Apply to apply these
new settings.
If you plan to program your experiments in MatLab, install the latest version of the
PsychToolBox and reboot the computer. Some demo examples can be found in the
Psychtoolbox directory which is in the Applications folder at:
"Applications/Psychtoolbox/PsychHardware/EyelinkToolbox/EyelinkDemos/GazeConti
ngentDemos".
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10.
Appendix A: Host PC Hardware Installation
To set up your Host PC for use with the EyeLink 1000 system, you will be required to
open the computer chassis to install two or three PCI cards. Therefore, put the
computer case in a position where you can easily access the computer’s PCI slots.
IMPORTANT: Switch off the computers before installing any PCI cards or
connecting or disconnecting any cables! Ensure that all cabling is properly
connected and connectors are properly secured to the Host PC and the
EyeLink 1000 camera before use.
IMPORTANT: Ensure that the power supply setting on the back of the
PC (Near the power jack) matches your local supply voltage!
IMPORTANT: Ensure the computer’s power cable is disconnected before
opening the computer chassis to install any PCI card.
WARNING: Static Electricity Discharge may cause permanent damages
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.
IMPORTANT: Handle the cards only by their edges.
10.1
Installing the High-Speed Frame Grabber - PCI card
Open the EyeLink 1000 Host PC, and insert the High-Speed Frame Grabber card into a
free PCI slot. Ensure the card’s bracket is firmly attached to the PC.
Figure 10-1: High-Speed Frame Grabber
10.2
Installing the Ethernet Card
Insert the DLINK DFE-538TX Ethernet Card (illustrated) into a free PCI slot, or the
Agere ET131x Gigabit PCIe Ethernet Card into a free PCIe slot. Ensure the card’s
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bracket is firmly attached to the PC. If the analog card option was not purchased with
your system, you may now close the computer chassis and reconnect the power supply
to the computer.
Figure 10-2: D-Link Ethernet Card
10.3
Installing the Data Translation Analog Card (Optional)
If the analog output option was purchased with your system, then insert the Data
Translation Analog output card into a free PCI slot. Ensure the card’s bracket is firmly
attached to the PC. Close the computer chassis and reconnect the power supply to the
computer.
Figure 10-3: Analog Card
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11.
Appendix B: Host PC Software Installation Under Windows 2000/XP
Please follow the instructions here to install or reinstall the host software.
IMPORTANT: Before proceeding with the EyeLink 1000 Host software
installation ensure you have backed up all important data on your Host PC.
The first step in preparing your Host PC for the EyeLink 1000 is to install the ROMDOS operating system that the EyeLink 1000 system runs on. This allows you to
perform subject setup, monitor performance, record data, and control experiments
running on the Display PC. At the same time, you will want to keep your existing
operating system accessible so that you can access your CDRW drive etc. when
required. To achieve this, you will create a FAT32 partition on your hard drive using
System Commander that will host the ROM-DOS OS provided with your EyeLink 1000
system. System Commander will also be used to allow you to choose which operating
system you wish to launch when you start the Host PC.
Important: If you have a floppy disk drive,
create the System Commander rescue disks
when prompted during installation. These may
help you recover the drive partitions in the
future, in the event of file system corruption on
the drive.
Your System Commander license is registered
through SR Research Ltd.
Figure 11-1: License Code Entry
11.1
Install System Commander
Install the System Commander application that came with your EyeLink 1000. This
application allows the user to manage multiple Operating Systems on one computer.
1. Boot into Windows as normal. Insert the “EyeLink 1000 Software” CD into your
CD drive.
2. Access the CD-ROM contents by double-clicking on “My Computer” and
selecting the CD-ROM drive. Open the ‘Host PC Installation\Utilities’ folder and
run the SystemCommander811.exe file to install the System Commander
software.
3. Click the INSTALL button on the opening screen and follow the instructions to
install the System Commander software. The license number will be on the front
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of the EyeLink 1000 Software CD case – enter it when you see the screen
illustrated in Figure 11-1. You are only licensed for 1 copy of this software for
use on the EyeLink 1000 Host PC. The installer will prompt you to create
‘Rescue Disks’, to register, to check for updates from the web, etc. None of these
steps is critical, so they may be skipped.
4. After installation, run the System Commander program by going to the Windows
“Start Menu” and selecting the “System Commander” entry.
5. A “Utility Wizard” dialog box will automatically be displayed (see Figure 11-2)
select the “Enable System Commander” entry, click on “Next”, exit the System
Commander program and restart the computer, booting from the System
Commander Boot CD supplied.
Figure 11-2: Enable System Commander
11.2
Resize Existing Disk Partition
The next step is to resize the existing partition to make space for a 5GB EyeLink Host
Application partition.
Insert the supplied “System Commander Boot CD” into the CD drive and restart the
computer, booting from the CD. You may need to configure your BIOS boot order so
that the CD is first in the Boot Priority. On Dell PCs, Press F12 to get the Boot Menu
and the select Internal CD as the boot device.
Once you have booted from the CD, select “Partition Commander or Restart”, and then
select ‘Manual Partitioning’ as illustrated in Figure 11-3.
Figure 11-3: Select Partitioning then Manual
Partitioning
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Figure 11-4: Partition Selection and Resizing
1. From the ‘Partitioning’ window (left side of Figure 11-4) select the disk and
the partition to resize. In System Commander, each disk is represented as a
cylinder. Within these cylinders are differently colored partitions. The
partition (typically, this will be in the primary disk) that should be resized to
make a new partition will normally be the largest chunk within the selected
disk. Highlight this partition as illustrated in left, and then click on the
“Resize” icon.
2. In the “New size (MB)” field of the Resize Partition dialog box (Figure 11-4
right), enter a value that is 5120MB less than the indicated ‘Current Size’.
For example, if the original disk size is 76253 MB, you should put 71133 MB
in the new size field.
3. Press ‘Next’ to do the resizing of the drive. System Commander may adjust
the partition size you entered slightly. This is expected and is not an issue.
Figure 11-5: Partition and Partition Type Selection
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11.3
Create the EyeLink 1000 Host Application partition
1. From the ‘Partitioning’ window select the newly formed ‘Free’ space (highlighted
in gray) which will appear on the top of the cylindrical drive diagram as
illustrated in the left side of Figure 11-5. Click the ‘Create’ icon which will bring
up the ‘Create Partition’ window.
2. Select ‘Primary’ and click ‘Next’ which will bring up the ‘Create Primary Partition’
window as illustrated in the left side of Figure 11-6. In the ‘Volume label’ field
type EYELINK and ensure that the ‘Custom Partition Type’ box is checked.
Click ‘Next’ to bring up the ‘Custom Partition Type’ window as illustrated in
Figure 11-6, right, and select ‘FAT-32’ then click ‘Next’. In the following
‘Warning!’ window, click ‘Proceed’.
Figure 11-6: Create a Custom FAT 32 Partition
3. Close the ‘Partitioning’ window by selecting the red “X” in the top right corner of
the window and exit System Commander by clicking "Start" at the bottom-left
corner of the screen selecting the "Exit" option. Eject the CD before the computer
reboots.
4. Upon restart the computer will once again run the System Commander
application. The new EyeLink partition will appear as the icon with two question
marks and will be labeled ‘FAT-32 OS’ as illustrated in Figure 11-8. We will
return to deal with this later. For now, we wish to boot into Windows once again.
5. Select the Windows XP partition. Windows XP should immediately determine
that the disk partitioning has changed and perform a number of system
tests to validate the hard drive. This is expected and should not be
interrupted.
6. Windows will reboot once its validation checks have been performed. From the
System commander menu select Windows XP a second time and boot into the
Windows operating system.
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11.4
Copy the Host Application files to the New Partition
The next required step is to copy the Host PC application files from the supplied
“EyeLink 1000 Software” CD onto the newly created EyeLink partition.
1. From Windows, start Windows Explorer. If you have removed the “EyeLink 1000
Software” CD from your CD drive, reinsert it. Navigate to the “Host PC
Installation \ Host Partition” folder.
2. Copy all of the files in this folder to the top level of the newly created EyeLink
FAT-32 drive (often E:\). The EyeLink CD has copy of all the files required for
the Host partition, including a required camera-specific .SCD file. Hence the CD
is required, and it is a good idea to keep the EyeLink 1000 Installation CD in a
safe place.
In some cases, Windows may hide certain operating system files (i.e., files
ending in .INI or .BAT). If you do not see a .BAT file when you view the contents
of the Host Partition folder, you can set Windows to ‘see’ these files using the
following steps:
i.
Select the Tools → Folder Options… menu in Windows Explorer.
ii. Select the View tab.
iii. Select the “Show hidden files and folders” option under Hidden files and
folders.
iv. Ensure “Hide extensions for known file types” is not selected.
v. Uncheck the “Hide protected Operating system files….” as illustrated in
Figure 11-7.
Figure 11-7: Windows Explorer Tools Folder Options…
Dialog
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vi. Press OK.
vii. Select all files in the “Host Partition” folder of the CD.
viii. Copy these files to the root directory of the EyeLink 1000 drive on your
computer.
3. To return Windows so that it hides operating system files complete the following
steps:
i.
ii.
Select the Tools → Folder Options… menu in Windows Explorer.
Select the View tab.
iii.
Deselect the “Show hidden files and folders” option under Hidden files
and folders.
iv.
Check the “Hide protected Operating system files….”
4. If you have a PS/2 keyboard please continue to section “11.6, Transfer the
System to make the EyeLink Partition Bootable”
11.5
Configuring the Keyboard
The PS/2 keyboard is the default driver setup within the EyeLink Host directory,
and is the only keyboard hardware recommended for the latest versions of the Host
Application.
11.6
Transfer the System to make the EyeLink Partition Bootable
1. Insert the CD labeled “ROM-DOS Boot Disk” that came with the EyeLink 1000
system, and restart the system as you normally would via Windows. The next
step is to boot off of the CD. You may need to press F12 before System
Commander is run to boot off of the CD-ROM device. With some newer types of
hardware choosing to boot from the CD-ROM from within System Commander
does not work as desired.
2. You will know that you have successfully booted from the CD-ROM of you are
given a ROM-DOS command prompt.
IMPORTANT: The following step requires you to determine the correct drive
letter (c:, d:, etc) for the EyeLink 1000 partition you created above after
booting with the ROM-DOS Boot Disk. Determine this by using the dir
command (e.g. dir c:) for each drive to find the EyeLink drive label and
substitute that drive letter (c:, d:, etc) in place of {EYELINK DRIVE} below. It
is likely that the drive letter will be either c: or d:
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Appendix B: Host PC Software Installation Under Windows 2000/XP
© 2005-2009 SR Research Ltd.
3. At the command prompt 'A:\>’ type the following command:
sys {EYELINK DRIVE} [ENTER]
For example if your EyeLink partition is drive c: you will enter:
sys c:
and then press the enter key.
4. Reboot the computer. Once System Commander runs, you should see something
like the screen pictured in Figure 11-8 with ?? and FAT-32 describing the
EyeLink Host partition.
Figure 11-8: Select Partition to Rename
11.7
Organize System Commander’s ‘OS Selection Menu’
1. When System Commander starts up, you will see a screen similar to Figure
11-8. Click on the ‘Settings’ icon.
2. From the ‘Settings’ window, select ‘Descriptions and Icons’ as illustrated in the
left side of Figure 11-9.
3. From the screen in the right side of Figure 11-9, click on the arrow buttons of
the ‘Current Selection’ box to select the ‘FAT-32 OS’. In the ‘EDIT DESCRIPTION’
box type EyeLink. Under ‘SELECT ICONS’, use the ’+’ and ‘-‘ buttons to change
both large and small icons to ‘OS’.
4. Click ‘OK’ to finish. Then from the ‘Settings’ window, select ‘Order Add and
Remove’ as illustrated in Figure 11-10.
5. From the ‘Order Add and Remove’ window, remove all icons except for the
Windows XP and EyeLink by highlighting each one and clicking the ‘Remove’
button as in the right side of Figure 11-10.
6. Highlight the EyeLink OS and click the ‘Top’ button to make EyeLink the default
partition.
7. Click ‘OK’ to finish and close the ‘Order and Remove’ window.
Appendix B: Host PC Software Installation Under Windows 2000/XP
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Figure 11-9: Select Description and Icons
Figure 11-10: Order Add and Remove
11.8
Automated boot into the EyeLink 1000 Operating System
1. If you would like System Commander to automatically boot into the EyeLink
partition, click on ‘Timeouts and default OS’ from the ‘Settings’ window.
2. Check the box beside ‘Auto-select timeout’ and set the number of seconds for
System Commander to wait before booting the default operating system. Indicate
the default OS in the ‘Default OS selection’. If you followed the earlier
instruction, EyeLink will be the first OS and can be selected by choosing ‘A’.
3. Once you have completed this step, close the windows by clicking the X in the
top right corner. You will be returned to the main System Commander window
and are now ready to test the installation.
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Appendix B: Host PC Software Installation Under Windows 2000/XP
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12.
Appendix C: Host PC Software Installation Under Windows Vista
Please follow the instructions here to install the Host software in conjunction with
Windows Vista.
IMPORTANT: Before proceeding with the EyeLink 1000 Host software
installation ensure you have backed up all important data on your Host PC.
A new Windows Vista installation is required and this WILL erase everything
on the hard drive. We do not have the ability to separately create the Host
partition with an already existing Vista installation.
WARNING: ALL DATA ON THE DISK WILL BE ERASED
Due to the nature of Windows Vista’s boot loader, a full installation of Windows Vista
must be performed. This means that the hard drive will be formatted and any
information on the hard drive will be erased.
We will first format the hard drive using ROM-DOS and create a FAT32 partition for the
EyeLink Host software. Next, Windows Vista will be installed on the unused portion of
the drive. Finally, under Vista, we will configure the boot loader so that the system can
be booted into either ROM-DOS or Windows Vista.
You will require:
•
a ROM-DOS Boot CD (supplied with your EyeLink or disk image available via
support@sr-research.com)
•
a copy of your EyeLink 1000 CD-ROM (or “EyeLink CL” CD-ROM) containing the
Host PC application software and your .SCD file (supplied with your EyeLink)
•
a copy of your Vista installation disk and Vista License
12.1
Formatting the Hard Drive under ROM-DOS
The first step in preparing your Host PC for the EyeLink 1000 and Vista is to format
your hard drive using the ROM-DOS operating system, and creating a partition for the
EyeLink Host software.
1. Boot the computer with the ROM-DOS Boot CD. If you are using a Dell
computer, place the CD in the CD-ROM drive and press F12 for booting options,
and boot from the Internal or USB CD-ROM drive. For other motherboards and
systems, you may need to enter the BIOS and change the Boot Priority of the
different drive components, in order to make the CD-ROM have the highest boot
priority.
2. At the command line prompt type "FDISK" without quotes.
3. While running FDISK:
i.
type 'A' and delete all partitions
Appendix C: Host PC Software Installation Under Windows Vista
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ii.
type 'M' and write the Master Boot Record
iii.
Create a DOS partition that is about 10 GB
iv.
Save and exit
4. Reboot the computer with the ROM-DOS CD.
5. At the command line prompt type "FORMAT C:" to format the disk, and label the
disk “EyeLink” if asked.
6. At the command line prompt type "SYS C:" to install the ROM-DOS system files
and make the partition bootable.
7. Eject the CD from the CD-ROM drive and reboot the computer. If all goes well,
the system should boot from the hard disk and present a ROM-DOS command
line prompt.
The next step is to install Windows Vista on the remainder of the hard drive, and then
to configure the Boot Loader so that Vista will give the option to boot from the ROMDOS partition or Vista when you start your computer. We will also copy the Host PC
directory and software to the EyeLink partition.
8. Reboot the computer from the Vista install DVD.
9. Install Vista on the second partition or if no second partition is shown, on the
remainder of the drive.
10. Enter User Names and Passwords as desired and once the Vista installation is
complete, reboot into the Vista operating system.
11. Go to the Start / All Programs -> Accessories -> Cmd.exe menu and right click
on the Cmd.exe icon and select the “Run as Administrator” contextual menu
item. Issue the following commands from the command prompt:
i.
bcdedit /copy {legacy} /d "EyeLink"
This will return a “<GUID>” – a string of characters that looks something like
{xxxxxxxxxxxxxxxxx....xxxx}. Select all of the text in the CMD window and copy it to
the clipboard by going to the Edit menu and selecting “Copy” – open Notepad in
Windows which is a simple text editor located at Start /All Programs -> Accessories
-> Notepad, and paste the text from CMD into the empty document. You can now
highlight and copy just the <GUID> text so that it can be easily pasted in the
following steps, wherever <GUID> appears.
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ii.
bcdedit /set <GUID> device partition=D:
iii.
bcdedit /set <GUID> path \bootsect.bak
iv.
bcdedit /displayorder <GUID> /addfirst
v.
bcdedit /default <guid>
Appendix C: Host PC Software Installation Under Windows Vista
© 2005-2009 SR Research Ltd.
12. Reboot the computer and select "Eyelink" on the menu to go into the EyeLink
partition or select Windows Vista to boot into Vista. You can now copy the EyeLink Host
Partition files from your EyeLink 1000 (or EyeLink CL) distribution disk to put the host
software on the EyeLink partition. See Section 11.4 "Copy the Host Application files to
the New Partition" for instructions.
Appendix C: Host PC Software Installation Under Windows Vista
© 2005-2009 SR Research Ltd.
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