11 - Speed Sensor (VBSSxx) Technical Specification

Velocity

	5 Hz	10 Hz	20 Hz	100 Hz
Accuracy	0.1 km/h	0.1 km/h	0.1 km/h	0.1 km/h
Units	km/h, mph, kts	km/h, mph, kts	km/h, mph, kts	km/h, kph, kts
Update rate	5 Hz	10 Hz	20 Hz	100 Hz
Maximum Velocity	1000 mph	1000 mph	1000 mph	1000 mph
Minimum Velocity	0.01 km/h	0.01 km/h	0.01 km/h	0.01 km/h
Resolution	0.01 km/h	0.01 km/h	0.01 km/h	0.01 km/h
Latency	>160 ms	41.5 ms	41.5 ms	6.75 ms

Distance

	5 Hz	10 Hz	20 Hz	100 Hz
Accuracy	0.05 % (<50 cm per km)	0.05 % (<50 cm per km)	0.05 % (<50 cm per km)	0.05 % (<50 cm per km)
Units	m / ft	m / ft	m / ft	m / ft
Update rate	5 Hz	10 Hz	20 Hz	100 Hz
Resolution	1 cm	1 cm	1 cm	1 cm

Absolute Positioning

		5 Hz	10 Hz	20 Hz	100 Hz
Accuracy		3 m*	3 m*	3 m*	3 m*
Accuracy with SBAS DGPS - Europe (EGNOS)		<1 m*	<1 m*	<1 m*	<1 m*
Accuracy with SBAS DGPS - USA (WAAS) / ASIA (MSAS)		<1.8 m*	<1.8 m*	<1.8 m*	<1.8 m*
Accuracy with BaseStation RTCM DGPS		N/A	40 cm*	40 cm*	80 cm*
Accuracy with BaseStation DGPS + GPS upgrade (RLVBUP30)		N/A	20 cm*	20 cm*	N/A
Update rate		5 Hz	10 Hz	20 Hz	100 Hz
Resolution		1.8 cm	1.8 cm	1.8 cm	1.8 cm
Height accuracy		10 m*	6 m*	6 m*	6 m*
Height accuracy with DGPS		N/A	2 m*	2 m*	2 m*

Time

	5 Hz	10 Hz	20 Hz	100 Hz
Accuracy - Lap Timing (OLED)	0.01 s**	0.01 s**	0.01 s**	0.01 s**
Accuracy - Accel / Brake Test (MFD)	0.2 s	0.05 s	0.05 s	0.01 s
Resolution	0.01 s	0.01 s	0.01 s	0.01 s

Heading

	5 Hz	10 Hz	20 Hz	100 Hz
Resolution	0.01°	0.01°	0.01°	0.01°
Accuracy	0.1°	0.1°	0.1°	0.1°

Acceleration

	5 Hz	10 Hz	20 Hz	100 Hz
Accuracy	1.00 %	0.50 %	0.50 %	0.50 %
Maximum	4 g	20 g	20 g	20 g
Resolution	0.01 g	0.01 g	0.01 g	0.01 g

Brake stop Accuracy (Trigger Activated)

	5 Hz	10 Hz	20 Hz	100 Hz
Accuracy	N/A	±20 cm***	±10 cm***	±1.8 cm***

Physical

	5 Hz	10 Hz	20 Hz	100 Hz
Weight	190 g	250 g	250 g	250 g
Operating temp	-30˚C to +70˚C	-30˚C to +70˚C	-30˚C to +70˚C	-30˚C to +70˚C
Storage temp	-40°C to +85°C	-40°C to +85°C	-40°C to +85°C	-40°C to +85°C
Size	90 mm x 65 mm x 31.85 mm	90 mm x 65 mm x 31.85 mm	90 mm x 65 mm x 31.85 mm	140 mm x 92 mm x 31.85 mm
Connectors	Deutsch ASDD Autosport	Deutsch ASDD Autosport	Deutsch ASDD Autosport	Deutsch ASDD Autosport
IP rating	IP66	IP66	IP66	IP66

 

Definitions

* Circle of Error Probable (CEP): 95 % of the time the position readings will fall within a circle of the stated diameter

** Not using DGPS and crossing the start/finish line at 100 km/h

*** Based on <50 m brake stop distance
 

CAN Output
Output Data Rate	125 kbit/s, 250 kbit/s, 500 kbit/s and 1 Mbit/s selectable baud rate. Software controlled CAN termination.
Data available	Position, vehicle speed, heading, lateral acceleration, longitudinal acceleration, satellite count, time, radius of turn, altitude, Distance from Trigger, Trigger Time, Trigger Velocity, True Heading.

 

RS232 Output
Output Data Rate	Dependent on unit type and mode
Data available	NMEA* and RL Serial, dependent on unit type (* NMEA output not available on 5 Hz unit)

 

Analogue
Output data rate	0 – 5 V DC
Data available	Either Speed, Lateral Acceleration, Longitudinal Acceleration, or Lap Beacon

 

Digital
Output data rate	Low = 0 V, High = 5 V, Max. frequency 4.4 kHz
Data available	Speed or Lap Beacon

 

Inputs
Input Voltage range	7 – 30 V DC
Power	3.7 W Max (except 5 Hz option: 2 W Max)
GPS Antenna	3 V Active Antenna (inc) / 5 V for 100 Hz version
Digital Input	Set Lap beacon Position / Brake Trigger Event
LED	Power, Satellite Count,  Event Out

5 Hz, 10 Hz, 20 Hz and 100 Hz (V1)

 
5 Hz, 10 Hz, 20 Hz and 100 Hz (V1) Speed Sensor

100 Hz (V2)

100 Hz Speed Sensor (V2)

100 Hz (V3/4)

100 Hz Speed Sensor (V3 and V4)