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RACELOGIC Support Centre

3 Target Vehicle ‘Duplex Mode’ (Splitters)

To configure the telemetry radios and VBOXs to calculate the Vehicle Separation parameters at the Target Vehicles as well as the Subject Vehicle for 3 Target tests when using splitter modules, please follow the steps below: 

IMPORTANT - These instruction only apply if you are using splitter modules, if you are using a CAN Hub, please follow the instructions here.

Duplex 2.png

Hardware Configuration

The hardware at the Subject Vehicle should be connected as per the Subject Vehicle hardware configuration diagram, except from the following important change.


The ADAS link radio needs to be unplugged from the ’RX’ socket and plugged into the unlabelled socket on the RLVBACS024/1 splitter.

This will allow a full Duplex link to exist between the Subject and Target VBOX’s.


You should now see that the RX and TX lights of both ADAS radios will now be flashing.

VBOX Manager Configuration

Sync To Target

When in Duplex mode, the target VBOXs have to understand which contact points have been set in the subject vehicle. To do this, the user must have a valid radio link between the four VBOXs and then select the ‘Sync To Targets' option under the ADAS ‘Subject' menu using VBOX Manager.

  1. Connect VBOX Manager to the VBOX within the Subject Vehicle.
  2. Enter the 'SETUP' menu of VBOX Manager.
  3. Select the 'ADAS' option from the 'SETUP' menu and ensure '3 Target' is selected.

    VBMAN ADAS Subject Contact Points.png
  4. Ensure that 'Subject' is selected within 'ADAS Function'.

    VBMAN ADAS Subject Contact Points.png
  5. Scroll to ‘Sync To Targets' and press to confirm.

    VBMAN ADAS Subject Contact Points.png
  6. You can then choose to syncronise Target 1, Target 2 and Target 3.
 VBMAN ADAS Subject Contact Points.png  VBMAN ADAS Subject Contact Points.png  VBMAN ADAS Subject Contact Points.png

Selecting these options will transmit all the subject vehicles settings to the target vehicles, allowing live data to be displayed in the target vehicles.

Pre-Test Configuration

The Duplex Radio link allows any configurations that are set in the Subject VBOX to be instantly communicated to the Target VBOXs, so that both boxes produce the same values for all Vehicle Separation parameters.

On power up and during the first communication between each VBOX there will also be a synchronisation of configurations between each VBOX.

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