Tobii Dynavox PCEye Plus, User Manual

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Appendix C Technical Specifications
Technical Specifications PCEye Plus
Gaze Data Rate 60 Hz
Data Streams
Eye tracking (gaze point, eye position, etc.)
IR image stream at 30 fps
Power Consumption
Full Operation
1.5 W typical average
Processing Unit Tobii EyeChip™ with fully embedded processing
Interface
USB 2.0 1 (power and signal)
Head Movement Box 2 size at distance
@ 50 cm
(@ 19.7
″
)
>25 cm × 20 cm ellipse
>9.8
″
× 7.9
″
@ 65 cm
(@ 25.6
″ )
>40 cm × 30 cm ellipse
>15.7 ″ × 11.8 ″
@ 90 cm
(@ 35.4
″
)
>40 cm × 35 cm circle
>15.7
″
× 13.8
″
@ 95 cm
(@ 37.4
″ )
>35 cm × 30 cm circle
>13.8 ″ × 11.8.8 ″
Distance from user to the Eye Tracker
50 cm - 95 cm
20 ″ - 37 ″
Screen Size 3
At 65 cm (25.6“) user distance
Recommended up to 27”
User Calibration
(former tracking robustness)
>99%
Detected Gaze
Interaction >30 Hz 99% for 95% of population 4
Raw data max frame rate 90% for 95% of population 4
Gaze Accuracy
Across 95% of population 4
<1.9°
Across 90% of population
4
<1.68°
Across 80% of population 4
<1.3°
Across 65% of population 4
<1.0°
Ideal 5
<0.3°
Gaze Precision
Across 95% of population 4
<0.4°
Across 90% of population 4
<0.3°
Across 80% of population 4
<0.25°
Across 65% of population
4
<0.2°
Ideal 5
<0.1°
Max Head Movement Speed
Eye Position
40 cm/s (15.7 in/s)
Gaze Data
10 cm/s (3.9 in/s)
Tobii Dynavox PCEye Plus User’s manual v.1.3 - en-US
Appendix C Technical Specifications
15