Using the VBOX Manager, go into VBOX->DUAL ANTENNA-> and tick ‘ROLL MODE’.
Go into VBOX->DUAL ANTENNA->SEPARATION and enter the separation of the antennas.
Try to avoid placing the antennas close to the edge of the roof as this may result in poor dual lock. This is because
reflections from the ground will disturb the signals.
In order to get a useful slip angle in Roll mode you will need to follow the slip translation guide. The slip angle is
calculated from the primary antenna position which in roll mode is off-centre and will give inconsistent measurements.
Translating this position back to the centre of the car will make the slip measurement consistent when turning both ways.
Antenna Placement
Whilst installation and use of the VBSS100SL is intended to be fast and simple, careful attention must be paid to
placement of the antennas.
It is essential that the separation of Antenna B from Antenna A is exactly the same as the separation value set inside the
Speed Sensor via the VBOX Manager, or Racelogic config software. If the separation is incorrect, data may not be given
or may be inaccurate. The measured distance between the antennas should be the straight-line distance between the
antennas regardless of the mounting angle. It is not the 2D distance between the antennas as viewed from above.
The supplied tape measure will help ensure an accurate antenna separation.
Antenna A is the primary antenna, from which all calculations are based. Therefore the primary antenna should be
placed relative to where you wish to make your measurements from. For example, If you wish to make measurements
from the centre of the vehicle, this can be achieved by placing the primary antenna at the centre of the vehicle or
translating the position using the slip angle translation function in the Vbox Manager
.
https://racelogic.support//02Speed_Sensors/Single_and_Dual_Antenna_Speed_Sensors/Quick_Start_Guides/Quick_Start_-
_Speed_Sensor_Dual_Antenna
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