User manual

4 Introduction

1.2 EyeLink 1000 System Configuration

1.2.1 Host PC

The EyeLink 1000 Host PC performs real-time eye tracking at 250, 500, 1000,

or 2000

samples per second with no loss of spatial resolution, while also

computing true gaze position on the display viewed by the subject. On-line

detection analysis of eye-motion events such as saccades and fixations is

performed. These events can be stored in a data file on the Host PC, sent

through the Ethernet link to the Display PC with a minimal delay, or output as

analog signals (if the analog/digital I/O card is installed). From the Host PC, the

operator performs subject setup, monitors performance, and can control

applications running on a Display PC. The Host PC has these key attributes:

• Hosts the EyeLink 1000 high-speed eye tracking card, optional analog

output/digital input card.

• Uses a timing-sensitive operating system allowing low variability in

EyeLink 1000 Host PC application response.

• The Host PC can be used for other purposes when not tracking eye

movements. Other operating systems (such as Windows XP) can easily

co-exist if the provided disk partitioning utility is used.

• Functions either as standalone tracker or connected to a Display PC

through 10/100BASE-T Ethernet cable.

• In standalone configuration, data can be directed through optional

analog output card and/or digitally stored on the hard disk.

• Response box or game pad connected by a USB port for highly accurate

event recording synchronized with eye movement data.

• EyeLink 1000 software integrates all needed eye tracking functionality,

including subject setup, calibration, real-time data through an Ethernet

link or optional analog output card, and writing of data to hard disk.

• Remote configuration of the Host PC software is possible via commands

sent over the Ethernet link.

Availability of some sampling rates depends on the mount type and system version.