The SPEEDBOX product range features combined GPS and inertial sensors to give robust, accurate and low latency measurements in real world conditions. A number of options are available to tailor the SPEEDBOX product to the application. The guide below highlights the key points of each option:

SPEEDBOX Case Options
SPEEDBOX SPEEDBOX MINI
The SPEEDBOX case has additional analogue I/O and a different connector format The SPEEDBOX MINI is more compact and lower cost
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Inertial Sensor Options:
Standard SPEEDBOX or SPEEDBOX MINI Spec +INS Single Antenna +INS Compact Dual Antenna
Standard specification uses a 3-axis accelerometer and GPS to calculate speed. Suitable for general straight-line speed measurement testing and pedal triggered brake tests. The INS Single Antenna uses a tactical grade IMU and GPS to calculate speed and vehicle attitude. This is the reference system for all automotive brake testing as well as chassis development. The INS Compact Dual Antenna adds a 2nd antenna to the INS system. All headline features and accuracies are the same as the INS Single Antenna, but a 2nd antenna allows the system to fully converge on a stationary vehicle.

Ideal for off-highway, military, mining trucks, or slow speed vehicles with low dynamics.

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2cm Positioning
GPS2 RTK 2cm Positioning

The SPEEDBOX INS has a distance accuracy of 2-3cm for all automotive braking tests, but the absolute positional accuracy is limited by standard GPS to about 1-2m.

The Addition of the GPS2 RTK to a SPEEDBOX system adds multi-constellation differential GPS technology for an absolute positional accuracy of 2-3cm. Speed and distance accuracy is unaffected, perfect for ADAS validation tests.