Placing the L-frame

Before you start a calibration, make sure that your camera settings are optimized and that there are no unwanted reflections in QTM.

1. Click the New icon in the top toolbar or type keyboard shortcut Ctrl+N to put the cameras into live preview mode.

2. If the cameras are picking up any unwanted reflections, solve them through camera settings and masks.

   

Once you’ve ensured that zero reflections are picked up by the cameras, place the L-frame in your recording volume.

• Remember that its corner marks the origin point of your lab’s coordinate system, and its handles define the X and Y axes according to the orientation set in Project Options.

• It is recommended that the L-frame be placed where all of the cameras can see it. However, you can still calibrate as long as at least some of the cameras can see the L-frame and there is enough overlap between them. In this case, refer to your QTM user manual for more details on doing an extended calibration.

• If your lab has force plates, the L-frame is usually placed on them in a predefined position. The foldable L-frame has tabs that can slide open to hold the frame in place along the plates.

  

• Check the bubble indicators, and turn the adjustment screws if needed to make sure that the L-frame is completely level.

  

The L-frame will remain in place during the calibration.