Tobii Dynavox PCEye Plus, User Manual

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Technical Specifications PCEye Plus
Max Head Tilt
>20°
Max Yaw, pitch
25°
Visibility
Low visibility (850 nm)
Flicker
no flicker (30 Hz constant)
Data Flow and Data Rate
Gaze Latency
25 ms
Gaze Recovery
100 ms
Low Resolution Stream 640×480 @30 Hz
Unit Size (Length × Height × Depth)
322 mm × 22 mm × 18 mm
12.7 ″ × 0.87 ″ × 0.71 ″
Unit Weight
280 g
9.9 oz
Microphone Microphone array consisting of 4 microphones
Ports
1 × 3.5 mm Switch connector interface
1. USB2 requirements: USB 2.0 BC1.2 provides Tobii IS4 with sufficient power and signal bandwidth.
2. Head box describes the space in front of the eye tracker where the user must have at least one eye to get gaze data. The eye tracker is at a 20° angle
looking upward from below the screen.
3. For larger than recommended screens, the limiting parameter is the quality of the gaze accuracy at the upper corners of the screen when the user sits
close to the screen.
4. The degree-of-accuracy and precision over percentage-of-population numbers result from extensive testing across representatives of the whole
population. We have made use of hundreds of thousands of diagnostic images and performed tests on approximately 800 individuals with different
conditions, vision, ethnicities, everyday dust, smudges or blemishes around their eyes, with eyes out of focus, etc. This has resulted in a much more
robust and high performance eye tracking experience and a much more realistic representation of true performance across the whole population, not
just in a mathematically “ideal” scenario.
5. The “ideal” degree numbers are the previous standard of measuring accuracy and precision, both previously from Tobii and presently from all eye
tracking competitors. Though “ideal” numbers are useful to get a general feel about comparative quality and performance, they are not applicable to
real world usage in the same way as quantitative degree-of-accuracy and precision over percentage-of-population numbers based on extensive
testing across representatives of the whole population.
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Appendix C Technical Specifications Tobii Dynavox PCEye Plus User’s manual v.1.3 - en-US