User's Manual
Table Of Contents
- 1 Introduction
- 2 Safety
- 3 Overview of the Tobii Dynavox I–12+ and I–15+
- 4 Batteries in the Tobii Dynavox I-Series+
- 5 Using the Tobii Dynavox I-Series+
- 5.1 Starting the Device
- 5.2 Shutting Down the Device
- 5.3 Using Gaze Interaction
- 5.4 Using Windows Control
- 5.5 Wake the Tobii Dynavox I-Series+ from Sleep with Gaze Interaction
- 5.6 Pause/Resume Gaze Interaction and Put the Tobii Dynavox I-Series+ to Sleep with Gaze Interaction
- 5.7 Using the Cameras
- 5.8 Using the GEWA Programmable IR Remote Control
- 5.9 Adjusting the Volume
- 5.10 Adjusting the Sound
- 5.11 Performing a Factory Recovery
- 5.12 Calibrating the Touch Screen
- 6 Configuring the Tobii Dynavox I-Series+ with the I-Series Control Center
- 7 Gaze Interaction Settings
- 8 Gaze Selection Settings
- 9 Product Care
- Appendix A Support, Warranty, Training Resources
- Appendix B Compliance Information
- Appendix C Computer Device States of Operation
- Appendix D Maximum Allowed Temperature
- Appendix E Technical Specifications
- Appendix F Approved Accessories
E3 Eye Tracker
Technical Specifications
Tobii IS20 Module
Working Distance
40 - 90 cm
18 - 35 inches
Freedom of Head Movement
i
@ 70 cm / 27.5 inches
(Width x Height)
50 × 36 cm
20 × 14 in
Head Movement Speed (optimal)
11.8 in/s
30 cm/s
Gaze Data Rate 30 Hz
Gaze Accuracy
ii
Under ideal conditions
0.4° (Std dev 0.1°)
Across 30 × 20 × 20 cm head box
0.5° (Std dev 0.2°)
Screen Size <22ʺ
Distance (from screen)
45 — 85 cm
17.7 — 33.5 in
Track box size (Width × Height)
27 × 23 — 52 × 44 cm
10.6 × 9.1 — 20.5 × 17.3 in
Track box depth
40 cm
15.7 in
Gaze Precision (=sample to sample noise)
iii
Under ideal conditions, without filter, on artificial eyes Pending
Across head box, without filter, on human eyes
0.4° (Std dev 0.1°)
Mounting
Built in
Power Supply
Built in
i. Freedom of head movement describes the volume in front of the tracker in which the user must have at least one of the eyes. The numbers are
specified parallell/orthogonal to screen surface, assuming eye tracker is at 20 degree angle to screen.
ii. Gaze accuracy describes the angular average distance from the actual gaze point to the one measured by the eye tracker.
Accuracy under ideal conditions is measured with users placed in the center of the eye tracker track box with the head resting on a chin rest, and the
room and screen illumination constant at 300 lux.
Accuracy across head box is measured with users after calibration systematically positioned at varying positions ranging from center of the head box
up to +/- 15 cm horizontal, +/- 10 cm vertical and +/- 10 cm distance.
Accuracy across varying background illumination is measured with users’ head resting on a chin rest, and after calibration modifying background
illumination from 1 to 1000 lux.
iii. Gaze Precision describes the point-to-point variation between individual gaze samples (here specified with binocular data, ie both eyes, and
measured on artificial eyes). Gaze Precision with Stampe filter is with Stampe stage 2 noise-reduction algorithm applied to raw data (Stampe ,
Behavior Research Methods, Instruments & Computers 1993, 25 (2), 137-142).
Precision without filter is based on raw data, without any de-noising filter applied, either inside or outside the eye tracker.
Precision under ideal conditions is measured with users placed in the center of the eye tracker track box with the head resting on a chin rest, and the
room and screen illumination constant at 300 lux.
Precision across head box is measured with users after calibration systematically positioned at varying positions ranging from center of the head box
up to +/- 15 cm horizontal, +/- 10 cm vertical and +/- 10 cm distance.
90
Appendix E Technical Specifications
Tobii Dynavox I-Series+ User’s manual v.1.0 - en-US