BTSensor Placement

To place a BTSensor in BTWYSIWYG

  1. In BTWYSIWYG CAD mode, click the Wireframe view tab.
  2. From the Library menu, choose Browse Library.
    • Result: The Library Browser window appears.
  3. At the bottom of the Library Browser window, click the Fixture tool.
  4. In the search box, type BlackTrax.
  5. Double-click on the name of the BTSensor that you want to insert.
    • Result: A fixture with default settings for this type attaches to the cursor.
  6. To change the properties of the fixture before inserting, such as the lens size, right-click on the fixture name, and then click Properties.
    • Result: A dialog box opens with a shaded view of the BTSensor on the left and an image of its symbol on the right. Use the Appearance tab to change the lens settings for the BTSensor. Options are 5.5 mm, 8.0 mm, 3.5 mm for Slim 13E.  For s250e BTSensor options are 5.5 mm, 8.0 mm.
  7. To place the BTSensor, move the mouse over a hang structure, and then click. Continue placing this type of fixture by clicking on the other hang structures as desired.
    • Note: BTSensors can be hung in Space without a hang structure.
  8. Right-click and select Finish placing fixtures from the menu to finish placing the fixture.
    • Result: BTSensors will be hung in virtual space. BTSensors will emit a red beam to represent their field of vision.

To aim a BTSensor in BTWYSIWYG

  1. In BTWYSIWYG CAD mode, click the Wireframe view tab.
  2. In the Wireframe view, select a BTSensor.
    • Tip: You can also use the Fixture Selection Tool to select a single sensor or multiple sensors.
  3. Use the Fanning Tool to aim the BTSensor(s) to the desired location.
    • Tip: You can also use the Cuts and Adjustments tool or the Focus menu to aim BTSensors in BTWYSIWYG.
    • Result: The BTSensor will orientate itself based on the new Pan and Tilt values. The BTSensor’s new field of view will be shown. For information about focussing, see the section on Quick focus in the WYSIWYG Reference Guide.

Example of BTSensor Placement

In CAD mode, BTSensors can be hung in the venue exactly the same as fixtures, from any pipe or truss. In this example BTSensors are hung around the perimeter on pipes represented in yellow, a mannequin in orange is at the origin of the room.

When BTSensors are hung, the BTSensor’s field of view will correctly project in the visualization. A BTSensor field of view of in BTWYSIWYG is depicted as a red beam Everything in the red beam is what the BTSensor can see.

Tracking can only occur when two or more BTSensors see the same area at the same time. By selecting multiple BTSensors, we can see their field of view and where their vision overlaps. Overlapping views are depicted in BTWYSIWYG as a deeper red then an individual view.

Two BTSensors whose field of view are overlapping. The deeper red in the center is the overlapping area where tracking can occur.

By placing BTSensors in BTWYSIWYG and viewing their projected field of view, it is easy to determine where BTSensors should go and how they should be aimed to maximize the tracking area in the venue. Any gaps in coverage where tracking cannot occur will also be shown. Once the position and orientation of BTSensor have been determined, you can record the data to reproduce the BTSensor placement in the actual venue.