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RACELOGIC Support Centre

Technical Specifications - VBOX 3i Single Antenna (v3)

This page covers the technical specifications for VBOX 3i Single Antenna (v3) units, for areas such as GPS, Slip, Pitch and Roll accuracies, IMU attitude accuracies, inputs, and environmental and physical attributes.


* Specifications will vary depending on the number of satellites used, obstructions, satellite geometry (PDOP), multipath effects, and atmospheric conditions.
For maximum system accuracy, always follow best practices for GNSS data collection.
** Not using DGPS and crossing the start/finish line at 100 km/h.
*** Approximately 29 MB per hour used when logging GPS data at 100 Hz; Approx. 182 MB per hour total logging capacity.
**** With fixed CAN latency.


GPS Specifications
Accuracy 0.1 km/h (averaged over 4 samples)
Units km/h or mph
Update Rate 100 Hz
Maximum Velocity 1000 mph
Minimum Velocity 0.1 km/h
Resolution 0.01 km/h
Latency 8.5 ms ± 1 or 15.5 ms****


Accuracy 0.05 % (< 50 cm per km)
Units metres or feet
Update rate 100 Hz
Resolution 1 cm


Absolute Positioning (RMS) 
Accuracy* (Standalone) 3m 95% CEP**
Accuracy* with SBAS DGPS < 1 m 95% CEP*
Accuracy* with RTCM DGPS 80cm 95% CEP**
Update rate 100 Hz
Resolution 1.8 mm
Height Accuracy* (Standalone) 6 m 95% CEP*
Height Accuracy with DGPS 2 m 95% CEP*


Accel/Brake Test (MFD/VBOX Test Suite) Lap Timing (MFD/VBOX Test Suite)
Resolution 0.01 s Resolution 0.01 s
Accuracy 0.01 s Accuracy 0.01 s**
    Precision 0.005 s


Accuracy 0.5 %
Maximum 20 G
Resolution 0.01 G
Update rate 100 Hz


Resolution 0.01°
Accuracy 0.1°


Compact Flash Type I
Recording Time Dependent on flash card capacity***


Brake Stop Accuracy
Accuracy ± 2 cm

Bit rate

Selectable baud rate:

  • 125 kbit/s
  • 250 kbit/s
  • 500 kbit/s 
  • 1 Mbit/s 
Identifier type Standard 11 bit 2.0 A
Data available
  • Satellites in View
  • Latitude
  • Longitude
  • Velocity
  • Heading
  • Altitude
  • Vertical Velocity
  • Distance
  • Longitudinal Acceleration
  • Lateral Acceleration
  • Distance from Trigger
  • Trigger Time
  • Trigger Velocity


Voltage range

0 to 5 V DC

(Internally protected by a 350 mA thermal fuse.)

Default setting
(The range settings can be adjusted by the user in VBOX Tools Software)

0.0125 Volts per km/h (0 to 400 km/h)

Accuracy 0.1 km/h
Update rate 100 Hz


Frequency range  DC to 44.4 kHz

Default setting
(The range settings can be adjusted by the user in VBOX Tools Software)


25 Hz per km/h (0 to 400 km/h)

90 pulses per metre

Accuracy  0.1 km/h 
Update rate  100 Hz


RACELOGIC modules  Up to 32 channels from any combination of Racelogic modules, such as TC8 and FIM03.
External CAN Bus 

Up to 16 channels of user-definable CAN signals from external bus, such as Vehicle CAN bus.

Can load signal data from an industry standard DBC database file.

Other channels  Channels that fall outside of the standard channel tab in VBOX Setup, such as AD inputs, IMU KF channels, twin antennas channels and ADAS channels.


Number of channels 4
Input range ± 50 V
Channel sample order Synchronous
Resolution 24-bit
DC accuracy ± 1 mV 


Brake event trigger  25 ns resolution
On/Off logging control  Remote log control from hand-held switch


Environmental and Physical
Input Voltage 7 to 30 V DC
Power 5.5 W (maximum)
Size 170 mm x 121 mm x 41 mm
Operating Temperature – 20° C to + 60° C
Weight 900 g (approximate)
Storage Temperature – 30° C to + 80° C
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