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Technical Specifications – VBOX 3i Dual Antenna (v5)

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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.
**	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.

GPS Specifications

Velocity
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		Minimum: 4 ms/ 8.5 ms (±1 ms) Fixed, no IMU integration: 15.5 ms/ 20 ms Fixed, with IMU integration: 20 ms

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

Absolute Positioning (RMS)
*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
*Accuracy with RTK**		V: 10 mm; H: 5 mm
Update rate		100 Hz
Resolution		1.8 mm
*Accuracy (Standalone)**		V: 1.8 m; H: 1.2 m

Time
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**

Acceleration
Accuracy		0.5 %
Maximum		20 g
Resolution		0.01 g
Update rate		100 Hz

Heading
Resolution		0.01°
Accuracy		0.1°

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

Brake Stop Accuracy
Accuracy		± 1.8 cm

Slip, Pitch and Roll Angle Accuracies

Antenna Separation		Slip Angle (RMS)		Pitch / Roll Angle (RMS)
0.5 m		< 0.2°		< 0.14°
1.0 m		< 0.1°		< 0.07°
1.5 m		< 0.067°		< 0.047°
2.0 m		< 0.05°		< 0.035°
2.5 m		< 0.04°		< 0.028°

IMU Attitude Accuracies

Channels available when an external IMU has been integrated with a VBOX 3i RTK v5.

IMU04

Attitude		Accuracy (RMS)
Pitch Angle		0.06°
Roll Angle		0.06°
Yaw Angle		0.5°

Outputs

CAN Bus

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

Analogue
Voltage range		0 to 5 V DC
Default setting (The range settings can be adjusted by the user in VBOX Tools Software)		Velocity 0.0125 Volts per km/h (0 to 400 km/h)
Accuracy		0.1 km/h
Update rate		100 Hz

Digital
Frequency range		DC to 44.4 kHz
Default setting (The range settings can be adjusted by the user in VBOX Tools Software)		Velocity (25 Hz per km/h (0 to 400 km/h) 90 pulses per metre
Accuracy		0.1 km/h
Update rate		100 Hz

Inputs

CAN Bus
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 signal 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

Analogue
Number of channels		4
Input range		± 50 V
Channel sample order		Synchronous
DC accuracy		± 2 mV (calibrated at 23° C)

Digital
Brake event trigger		DC to 44.4 kHz
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