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RACELOGIC Support Centre

Technical Specification - VBOX 3iS Single Antenna (v2)

GNSS Specifications

Velocity
Accuracy     0.1 km/h (averaged over 4 samples)
Update rate     100 Hz
Maximum velocity     1200 km/h
Minimum velocity     0.1 km/h
Resolution     0.01 km/h
Latency     20 ms (fixed)

 

Absolute Positioning
Accuracy* Standalone     V: 1.8 m; H: 1.2 m
Accuracy* with SBAS      V: 1.2 m; H: 0.8 m
Accuracy* with DGPS     V: 0.5 m; H: 0.3 m
       
Update rate     100 Hz
Resolution     1.8 mm

 

Distance
Accuracy     0.05% (< 50 cm per km)
Update rate     100 Hz
Resolution     1 cm

 

Acceleration
Accuracy     0.50 %
Maximum     20 g
Resolution     0.01 g
Update rate     100 Hz

 

Heading
Resolution     0.01°
Update rate     100 Hz

 

Time
Resolution     0.01 s
Accuracy     30 ns

 

Brake Stop Accuracy (Trigger Activated)
Accuracy     ± 1.8 cm**

Definitions

* 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.

** Based on <50 m brake stop distance.


IMU Specifications

 

 

Gyroscopes
(Angular rate sensors)

Accelerometers

Dynamic range   ± 450 °/s ± 20 g
Nonlinearity   0.01 % of full scale 0.1 % of full scale
Effective Resolution   20 bits (0.00085 °/s) 20 bits (0.00004 mg)
Bandwidth   50 Hz 50 Hz
Noise density   0.01 °/s/√Hz 60 μg/√Hz
Bias stability   0.0028 °/s 15 μg
Bias repeatability (1 year)   0.2 °/s 0.005 g

 

 
Pitch Angle
Roll Angle
Accuracy (RMS)   0.06° 0.06°

Outputs

CAN Output
Output data rate    

Selectable baud rate:

  • 125 kbit/s
  • 250 kbit/s
  • 500 kbit/s
  • 1 Mbit/s 

Software controlled CAN termination.

Data available     

Outputs: Satellite count, time, position, speed, heading, height, vertical velocity, longitudinal acceleration, lateral acceleration, distance, yaw angle (body), roll angle, pitch angle, X acceleration, Y acceleration, Z acceleration, pitch rate, roll rate, yaw rate

Results: Trigger event time, trigger speed, start speed, end speed, deceleration test time, lap time, split time, radius of turn.

 

RS232 Output
Output data rate     Up to 100 Hz

 

Ethernet Output
Output data rate     100 Hz

 

Digital Output
Signal levels    

Low = 0 V, High = 5 V.

Max frequency 4.4 kHz

Output type     Speed, 1 PPS or Lap Beacon

 

GNSS Antenna Supply
Supply voltage     5 V DC

Inputs

Input Power
Input voltage range     7.5 to  30 V DC
Power     7.5 W (max)

 

Digital Input
Input function     Brake event trigger/track marker

 

CAN Input
Input function     Wheel Speed Inputs

 

RS232 Input
Input function     Configuration/External IMU

Environmental and Physical 

       
Weight     480 g (approximate) 
Size (including connector)     139.21 mm x 78.5 mm x 38 mm
Operating temperature     - 20 °C to + 70 °C
Storage temperature     - 40 °C to + 85 °C
IP rating     IP67
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