System overview¶

EMF Source:

The EMF Source emits the electromagnetic field. It is powered from a USB plug-in power supply or directly from a PC USB port or other USB power source. The EMF Source communicates with the EMF sensors and the USB RF Hub using the built-in proprietary RF link.

Notes: The EMF Source can be configured to have RF Hub functionality, enabling the EMF sensor data to be transferred via the EMF Source USB connection. In this case, the EMF Source needs to be powered from the USB-C port also used for EMF Sensor data aggregation since the EMF Source only have one USB-C port.

EMF sensors:

The wireless EMF sensors pick up the EM field and calculate their position (6DOF) from the EMF source. Communicating with EMF Source driver and USB RF hub is done using 2.4GHz proprietary RF link. Sensors can be supplied with or without IMU Fusion.

Notes:

- The EMF Sensors have Inertial Measurement Units (IMU) on-board, which are used for EMF / IMU sensor fusion, increasing system tracking performance. The EMF / IMU sensor fusion can be toggled on/off from the configuration page in the AMFITRACK Viewer.

- Should a wired data interface be preferred, the EMF Sensors can be configured to use the USB-C port for tracking data and configuration communication.

USB RF Hub: The USB RF Hub enables the data communication between the EMF source and sensors and a PC using the built-in RF link and USB port. This includes transferring the EMF Sensors tracking data and all system components’ configuration data.

Notes: The USB RF Hub is an optional system component since the EMF Source can also be configured for USB RF Hub functionality.

USB plug-in power supply: The USB plug-in power supply can be used for powering the EMF Source and also for charging the EMF Sensor batteries.

Notes:

- The interchangeable power supply adaptors allows the Plug-in PSU to be used with country specific wall outlets.

- The EMF source can also be powered using a standard USB port.

- The EMF sensors batteries can also be charged using a standard USB port.

USB cables: The USB-C to USB-A cables are used to power the EMF source from a PC USB-A port and charge the EMF Sensors through a USB-A port.

Basic Operations¶

Powering the EMF source¶

The EMF source is powered from the supplied USB wall plug-in power supply or directly from a PC or other USB power source.

Turning the sensors ON/OFF¶

Turning the sensor ON: Click the button → LED turns on, sensor is powered ON.

Turning the sensor OFF: Hold the button for a few seconds → LED turns off, sensor is powered OFF.

Tracking start¶

Make sure that the EMF Source are powered on.

There are two ways to start the sensor tracking:

1. Auto start (Default):

a. Push the sensor button to power the sensor on.

b. Move the sensor until the sensor LED changes color from white to another color.

2. Manuel startup (Always active):

a. Push the sensor button to power the sensor on.

b. Point the sensor towards the source and push the button again 60cm along the positive X-axis and 30cm along the positive Z-axis.

Charging the sensor¶

The EMF Sensor contains a rechargeable Lithium battery.

The charging starts when the sensor is connected to a 5V USB power source (external 5V USB power supply or PC USB port).

Charging indication (when the sensor is powered off):
LED ramp up cyan: Charging in progress.
LED constant cyan: Charging complete.

A complete charge cycle of a sensor from 0-100% battery level will take approx. 1 hour.

Battery lifetime from fully charged to fully discharged is approx. 2.5 hours.