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RACELOGIC Support Centre

11 - Dual Antenna Speed Sensor Technical Specification




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 6.75 ms



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



Accuracy 0.01 s
Resolution 0.01 s


Absolute Positioning

Accuracy 3 m (95 % CEP*)
Accuracy with SBAS DGPS >1 m (95 % CEP*)
Accuracy with RTCMV2 DGPS 80 cm (95 % CEP*)
Accuracy with RTK DGPS*** 2 cm (95 % CEP*)
Resolution 1.8 mm
Update Rate 100 Hz
Height Accuracy 6 m (95% CEP*)
Height Accuracy with DGPS 2 m (95% CEP*)



Accuracy 0.5 %
Maximum 20 g
Resolution 0.01 g
Update Rate 100 Hz



Accuracy 0.1°
Resolution 0.01°


Brake Stop Accuracy (Trigger activated)

Accuracy +/- 1.8 cm**


Note: Channels highlighted in Blue are for SL series units only.

Slip Angle Accuracies

Pitch and Roll Angle Accuracies

<0.2° rms at 0.5m antenna separation <0.14° rms at 0.5m antenna separation
<0.1° rms at 1.0m antenna separation <0.07° rms at 1.0m antenna separation
<0.05° rms at 2.0m antenna separation <0.035° rms at 2.0m antenna separation
<0.04° rms at 2.5m antenna separation <0.028° rms at 2.5m antenna separation


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

** 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. Slip angle, Yaw rate, Pitch/Roll angle, Longitudinal and Lateral Velocity


RS232 Output

Output data rate Up to 100 Hz
Data available NMEA or RL Serial



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



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



Input Voltage range 1st Gen = 6.5 – 30 VDC  / 2nd Gen = 7 – 30 V DC
Power 3.7 W (maximum)
GPS Antenna 5 V Active Antenna (inc)
Digital Input Cold Start Activate / Set Lap beacon Position
LED Power, Satellite Count,  Event Out


Environmental and physical

Weight Approx 250 g
Size 140 mm x 92 mm x 31.85 mm
Operating Temperature -30°C to +70°C
Storage Temperature -40°C to +85°C
Connectors Deutsch ASDD Autosport; Rated IP66 



Speed Sensor Dimensions Dual Antenna V2.png
100 Hz Dual Antenna Speed Sensor (V2)


Speed Sensor Dimensions Dual Antenna V34.png
100 Hz Dual Antenna Speed Sensor (V3 and V4)

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