User manual

An EyeLink 1000 Tutorial: Running an Experiment

3. An EyeLink 1000 Tutorial: Running an Experiment

The following tutorial will demonstrate and test the EyeLink 1000 system,

assuming that you have already arranged a proper layout of the EyeLink 1000

equipment and configured PHYSICAL.INI for your setup (see Section 1.1

“Suggested Equipment Layout” and Section 10 “Final Installation steps” of the

“EyeLink 1000 Installation Guide” document). A summary of the setup

procedure can be found at the end of the discussion (“3.13 EyeLink 1000 Setup

Summary”). This section leads you through a straightforward subject setup and

pupil – corneal reflection eye-tracking demonstration. For the easiest setup, you

should select a subject for the test that can sit still when required, and does not

have eyeglasses. Once comfortable on these subjects, you can tackle more

difficult setup problems.

During the session description we take the opportunity to discuss many

important aspects of system use. These may make the setup appear long, but a

practiced experimenter can set up a subject in less than five minutes, including

calibration and validation.

If the EyeLink host software is not yet running on the Host PC, start it by typing

CD C:\ELCL\EXE

↵

ELCL

↵

IMPORTANT: Remember to exit the EyeLink software by pressing the key

combination CTRL+ALT+Q. Do not switch off the computer while running the

EyeLink 1000 software, as data may be lost.

Now start a simple example application on the Display PC by selecting

Start->Programs -> SR Research -> EyeLink -> TRACK.EXE.

When TRACK starts, a copyright message will appear on the Display PC, and

the status message (at the top right) should read “TCP/IP Link Open” on the

Host PC.

A dialog will appear on the Display PC asking you to enter a Track EDF file

name. Enter “TEST” (without the quotes “ ”).

Once TRACK is running, control is either from the Host PC or Display PC

keyboard, and the application will reflect the state of the EyeLink 1000 software

by drawing appropriate graphics on the Display PC. The advantage of the

Display PC based control is that it allows the operator to work near the subject,

or for self-setup. We will perform most of the EyeLink 1000 setup by using the

Host PC keyboard.