Appendix D
Technical Specifications
Technical Specifications
Tobii PCEye Go
Working Distance
40 — 90 cm
18 — 35 inches
Freedom of Head
Movement
i
@ 70 cm / 27.5 inches
(Width × 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 (16:9)
<22
″
24
″
27
″
Distance (from screen)
45 — 85 cm
17.7 — 33.5 in
55 — 85 cm
21.6 — 33.5 in
65 — 85 cm
25.5 — 33.5 in
Track box size (Width ×
Height)
27 × 23 — 52 × 44 cm
10.6 × 9.1 — 20.5 × 17.3 in
35 × 28 — 52 × 44 cm
13.8 × 11 — 20.5 × 17.3 in
43 × 33 — 52 × 44 cm
16.9 × 13 — 20.5 × 17.3 in
Track box depth
40 cm
15.7 in
30 cm
11.8 in
20 cm
7.9 in
Gaze Precision (=sample
to sample noise)
iii
Across 30 × 20 × 20 cm
head box, without filter, on
human eyes
0.4° (Std dev 0.1°)
Mounting
Magnetic Mounting Plates
Power Supply
Single USB 2.0
Unit Weight
200 g
7.1 oz
Unit Size (Length ×
Height × Depth)
184 × 28 × 23 mm
7.2 × 1.1 × 0.9 inches
Works with (Operating
System)
Windows Vista (SP2), Windows 7, Windows 8, Windows 8,1 or Windows 10
System Requirements
CPU: 1GHz, 2 cores
RAM: 2GB
GPU: 60 MB video RAM, pixel shader version 2.0 or higher
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.
58
Appendix D Technical Specifications
Tobii PCEye Go User’s manual v.2.8 - en-US
