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3-Axis Measurement Dynamic Motion Compensation Integrated Processor Hard- and Soft- Iron Correction Low Power Consumption




The first affordable AHRS that stays on track while moving and through magnetic distortion, ideal for unmanned vehicles and navigation systems

Unmanned vehicles are performing progressively more complex tasks – and requiring increasingly robust and accurate heading and orientation information. But existing attitude and heading reference modules (AHRS) leave too much room for error. They lose heading when encountering magnetic distortion; they suffer from errors when experiencing erratic motion; and often don’t provide accurate heading, even in a static environment. And at more than $2,000 for a MEMS-based AHRS, it’s no wonder AHRS have only been integrated by a select few customers.

The Trax AHRS module provides unparalleled heading accuracy when static, while moving and when encountering magnetic distortion. Trax employs a patented Kalman filtering algorithm that intelligently fuses PNI's patented geomagnetic sensors with gyroscopes and accelerometers to overcome errors due to erratic motion and changes in the local magnetic field. And Trax is priced for commercial use, delivering more reliable heading than AHRS modules that cost twice as much.

So when there’s no room for error, Trax stays on track.


Accuracy in presence of magnetic transient and/or dynamic motion 2° rms
Static Accuracy  0.3° rms
Resolution 0.1°
Accuracy in presence of dynamic motion 2° rms
Static Accuracy 0.3°
Range ±90 of pitch; ±180 of roll
Resolution 0.1°
Maximum Dip Angle 70°
I/O Characteristics
Communication Interface RS232 & USB
Mechanical Characteristics
Dimensions (l × w × h) 3.5 × 4.3 × 1.0 cm
Weight 7g
Power Requirements
Supply Voltage 3.6 – 5 VDC
Current Draw, continuous output 55 mA
Temperature Range
Operation –40°C to +85°C
Storage –40°C to +85°C


File Type
FieldForce Trax AHRS Data Sheet Datasheet
TRAX-Studio-1.0.2.msi Software
TRAX-User-Manual-r09.1.pdf User Manual

Ordering Info

File Description
12960 TRAX
90046 Trax Interface Kit, includes pigtail cable
90047 Trax Eval Kit, includes pigtail cable & 6' eval cable  


By Email

By Phone

Toll Free: 800.665.5600 (North America)
Direct: 604.814.5069
Fax: 888.831.5149

By Mail

Tri-M Technologies Inc.
208 – 31510 Gill Avenue
Mission, BC, Canada  V4S 0A1

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