1. Introduction

Why is a site assessment required?

A site assessment needs to be done in advance before each event to ensure that the venue is suitable without any interferences for the technology and equipment.

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2. Requirements

The following must be fulfilled before proceeding with the rest of the manual.

You have the required hardware and software that includes the following:

Hardware

• 1 x laptop
• 5 x Axis nodes
• 1 x USB A or USB C dongle
• 4 x Axis leg straps with node holders
• 1 x Axis Spine strap with node holder

Software

• Axis Control Center (installed on laptop)
• VTKD PC Application (installed on laptop)

Others

• Ensure all devices are up to date
• Laptop is fully charged and able to be mobile for testing
• Axis nodes are charged for at least 2 hours
• Axis nodes are paired
• 1 x person donning Axis (5 nodes with straps)
  • Spine
  • Both thighs
  • Both calves
• Confirm location/position of the Field of Play (FOP)

*You may refer to the VTKD manual for the full set-up of all VTKD equipment.

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3. Precaution

There should not be any metal structure nor electrical cabling within the whole FOP (including outer safety boundary)

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4. Site assessment steps

Calibration

• Strap on Axis with straps.
• Check Axis Channel assignment (any of the channels can be used as long as they are on the same channel, e.g: channel 1).
• Take a step back, 1m from the middle of your FOP (as shown in the image below).

• Calibrate Axis in “Axis Control Centre” (Axis CC).
• Do not readjust the strap position throughout the test.

Moving within the FOP to check for interference

• Facing the same forward direction throughout the test, walk towards the position number shown in red from the image below.

• Stand on the spot for 5-10 seconds and observe for any drift* of your body and limbs on the Axis CC. *(A drift is when your body or limb turns to any direction while you are standing still on the spot)
  • Acceptable range: If a drift is observed to be approximately less than 10 degrees.
  • Unacceptable range: If a drift is observed to be approximately more than 10 degrees.
• For record, save a screenshot of your Axis CC and rename the file as: ‘<fop>_<color>_front_left.png’
• e.g: FOP_A_blue_front_left.png
• Repeat steps no.1 to no.3 for all other positions and in both the blue and red field of play (FOP). Refer to images below for testing positions.
• Front right (e.g: FOP_A_blue_front_right.png)

• Back right (e.g: FOP_A_blue_back_right.png)

• Back left (e.g: FOP_A_blue_back_left.png)

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5. Appendix

Here in the appendix, the images below will portray examples of acceptable and unacceptable tracking behaviour.