Eyelink Portable Duo System Configuration; Eye Tracking Unit; Figure 1-1: Eyelink Portable Duo Eye Tracker, Showing Internal Camera Lens - SR Research EyeLink Portable Duo User Manual

A typical EyeLink Portable Duo setup consists of two computers – one, which is
called the Host PC, connects to the eye tracker and is dedicated to data
collection. The second computer is referred to as the Display PC, and is
generally used for the presentation of stimuli to a participant. The two
computers are connected via an Ethernet link that allows the transfer of critical
information between the two computers. This transfer allows the Display PC
access to the eye data, such as ongoing gaze position and saccade and fixation
events (which are being processed and recorded on the Host PC). It also allows
the transfer of camera images from the camera/Host PC to the Display PC
during participant setup. Similarly, the Display PC can send information to the
Host PC over that same Ethernet connection, allowing Display PC applications
to direct the collection of data and mark critical experimental events, such as
the onset of experimental stimuli, in the eye tracking data file. This message
passing also allows events collected by I/O devices on the Display PC (e.g.,
button boxes, microphones, etc.) to be marked in the data file.
IMPORTANT: Please examine the safety information for the EyeLink Portable
Duo system which can be found in Section 6.

1.1 EyeLink Portable Duo System Configuration

1.1.1 Eye Tracking Unit

ISOMETRIC VIEW
WINDOW REMOVED
WINDOW REMOVED
Figure 1-1:
Showing Internal Camera Lens and Illuminator
The EyeLink Portable Duo eye tracker comes with a high-speed USB camera (on
the left side of the unit) and an infrared illuminator (on the right side of the
2 Introduction
© 2016-2017 SR Research Ltd.
FRONT VIEW
EyeLink Portable Duo Eye Tracker,
RIGHT VIEW
WITH CABLE ENTRY