SR Research EyeLink Portable Duo User Manual page 32

doing manual recording sessions in standalone mode that are not driven by a
Display PC using the EyeLink API, or to override or manipulate options not set
by the Display PC application. Ideally, all settings to be crucially controlled are
set by the Display PC application at runtime via a set of API calls. The Default
Settings should be sufficient for many tracking applications.
Details of the individual commands are listed in section 2.4.1.3.
be tracked properly.
A target-to-camera distance scale is displayed at the bottom in the Remote
mode to provide feedback whether the current distance is too close or too far.
The map view on the right shows the participant's head position in the global
camera image – the two colored dots represent each of the eyes; the target
sticker image is also displayed in the Remote mode. Adjustments to the camera
and/or participant's position are required if the target and/or eyes are missing
or very off-center in the map.
22 EyeLink Portable Duo Host Software
© 2016-2017 SR Research Ltd.
The Advanced tab allows many eye tracker options
to be configured manually. This is useful when
The target thumbnail image shows
the target sticker tracking status
and reports the target-to-camera
distance in millimeters (in the
Remote mode only). It will display a
"MISSING" error if the target is not
present, or a "BIG ANGLE" error if
the target has too large an angle to
The thumbnail windows show a zoomed-in view of
the tracked eye(s). Pupil and CR thresholds and
status are displayed beneath the camera image. It
will display a "PUPIL MISSING" error if the Pupil
or CR is not present, a "BOUNDS" error if pupil or
CR is missing, or the fitted gaze data doesn't
appear to be valid, and "SIZE" warning if the pupil
size is larger or smaller than the maximum- or
minimum- allowed pupil size. If only one eye is
being tracked, the thumbnail image box of the
other eye will be grayed out.