♦ Location: System Resources tree > Devices node > Add Analog Device and Properties pane
You can now add a Motekforce Link treadmill to your Vicon system in the same way as you add other analog devices.
To add a Motekforce Link treadmill:
1. Ensure Nexus is in Live mode.
2. In the System Resources tree, right-click Devices.
3. Point to Add Analog Device and from the list, select the Motekforce Link option.
In the System tree, below the Devices node, two new device nodes are displayed, one for each plate.
4. To change the settings of your device, select both new nodes (Shift+click) and in the Properties pane, make the required adjustments.
5. Note that a single calibration file is used for both plates. To select the calibration file, in the System tree, select the nodes for both plates and in the General section of the Properties pane, click the ellipsis (...) next to the Calibration File field to browse to the relevant location. You can then select the required file from the Calibration File list.
Note the following recommendations for setting up and using your Motekforce Link treadmill with Nexus:
❙ For ease of use, align the Vicon world Y-axis with the direction of walking on the treadmill. To achieve this, you can either move the treadmill in the laboratory to align with the Vicon world axes in Nexus, or change the Vicon world axes to align with the position of the treadmill. You can then set the incline of both plates of the treadmill by adjusting the X Orientation property of the force plate.
❙ Assuming you follow this advice so that the direction of walking on the force plates aligns with the Vicon Y-axis, and the left-right (medial-lateral) direction aligns with the Vicon X-axis, inclination of the force plate will correspond to a rotation of the plate about its X-axis. For example, to set a 10 degree inclination of the treadmill, you would set a 10 degree X (deg) rotation in the plate's Orientation properties.
❙ Each capture must use only one inclination of the treadmill. If you need to capture multiple inclinations, to enable you to switch easily between different inclinations, create a number of separate system files: one for each required inclination.