Additional Nexus reference PDFs:

Nexus legacy documentation:

This information is for Vicon Nexus 2.13. For up-to-date help, see the latest Nexus documentation.

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The Tobii Pro Eye Tracker enables you to output eye tracker position and gaze direction, with binocular gaze tracking. Its nodes (Tobii Pro Glasses 2 and Tobii Pro Glasses 3) are displayed under the Devices node.

The Tobii Pro Eye Tracker is compatible with current Vicon cameras. A minimum of two cameras are required for use with the system. Note that Nexus supports the use of only one pair of glasses at a time.

For information on setting up a Vicon system that includes Tobii Eye Tracker, see  Use Tobii Eye Tracker with Nexus.

Tobii Pro Glasses node context menu

The following command is available from the context menu that is displayed when you right-click on a Tobii Pro Glasses node in the Resources tree on the System tab:

Remove DeviceRemoves the Tobii Pro Glasses node from the System Resources tree.

Tobii Pro Glasses node properties

You can configure the following settings in the Properties pane for a Tobii Pro Eye Tracker. For instructions on preparing and connecting the glasses, see the quick start guide provided in the Tobii Pro Glasses box.

General section

NameEnter a display name for the device.
Default: Blank
Delay Compensation (s)The delay compensation value (in seconds).
Many eye tracking systems, particularly new wireless systems, may introduce a small delay in transmission of data. This delay may cause a misalignment between Vicon frames of data and eye tracking frames of data. The Delay Compensation slider bar enables you to correct this difference and properly align Vicon data with eye tracking data. To find the amount of delay for an eye tracking system, refer to the operating manual of the eye tracking system.
All devices have a delay compensation value which adjusts the synchronization offset between the device and the Vicon data. Analog data collected with the Vicon connectivity devices should already be synchronized, so this value should be set at 0. Values can be set between -10 and 10.
Default: 0
FirmwareThe version of the firmware that is obtained from the recording unit.
HeadunitThe version of the headunit that is obtained from the recording unit.
Battery %Percentage charge remaining on the current battery.
Glasses SegmentEnter or navigate to the name for the segment that is attached to the glasses.
Default: Blank

Status section

ConnectedIndicates whether or not the device is connected.

Connection section

Sampling RateFrequency of the data samples from the Tobii Recorder.
Serial NumberSerial number of the Tobii Recorder.
IPv4Connection address

Calibration section

Calibration StatusStatus of the last calibration
Start CalibrationClick to start the Tobii calibration