3DM-GX1®
3DM-GX1®
Attitude Heading Reference System (AHRS)
3DM-GX1® combines three angular rate gyros with three orthogonal DC accelerometers, three orthogonal magnetometers, multiplexer, 16 bit A/D converter, and embedded microcontroller, to output its orientation in dynamic and static environments.
Operating over the full 360 degrees of angular motion on all three axes, 3DM-GX1® provides orientation in matrix, quaternion and Euler formats. The digital serial output can also provide temperature compensated, calibrated data from all nine orthogonal sensors at update rates of 350 Hz.
Networks of 3DM-GX1® nodes can be deployed by using the built-in RS-485 network protocol. Embedded microcontrollers relieve the host system from the burden of orientation calculations, allowing deployment of dozens of 3DM-GX1® nodes with no significant decrease in system throughput.
Output modes and software filter parameters are user programmable. Programmed parameters and calibration data are stored in nonvolatile memory.
How it works
3DM-GX1® utilizes the triaxial gyros to track dynamic orientation and the triaxial DC accelerometers along with the triaxial magnetometers to track static orientation. The embedded microprocessor contains a unique programmable filter algorithm, which blends these static and dynamic responses in real-time.
This provides a fast response in the face of vibration and quick movements, while eliminating drift. The stabilized output is provided in an easy to use digital format. Analog output voltages proportional to the Euler angles can be ordered as an option.
Full temperature compensation is provided for all nine orthogonal sensors to insure performance over a wide operating temperature range.

- Unmanned Aerial/Underwater Vehicles
- Computer Science, Biomedical
- Mobile Cameras, Sonar Scanners
- Mobile Radio Antennas
- Manufacturing
Comprehensive Calibration
- Robotic Calibration Performed on all Modules
- Software Compensation for Bias and Sensitivity for all 9 Sensors over the Full Temperature Range
- Software Correction for Sensor Misalignment
- Software Correction for Gyro G-sensitivity
- Hard and Soft Iron Field Calibration
- Complete Calibration Document Shipped with Every Order

- On-board processing/filtering of accelerometer, gyro and magnetometer outputs
- Fully temperature compensated
- Calibrated for sensor misalignment and gyro G-sensitivity
- Supports hard iron field calibration
- Outputs Euler angles, quaternions and orientation matrix
- RS-232, RS-485 and analog output options
- Small, lightweight and low power
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General Documentation
- 3DM-GX1® Product Datasheet
- 3DM-GX1® Software Manual
- 3DM-GX1® Detailed Specifications
- 3DM-GX1® Comparison With and Without Temperature Compensation
- 3DM-GX1® Data Communication Protocol 3.1.02
Mechanical Prints
- 3DM-GX1® 4-lead Analog Cable
- 3DM-GX1 Top Board Dimensions
- 3DM-GX1® PCB Assembly Dimensions
- 3DM-GX1® Enclosure print
- 3DM-GX1® RS-232 Communication/Power Cable
- 3DM-GX1® RS-485 Communication/Power Cable
- 3DM-GX1® Internal Wiring Block
Technical Notes
- Bluetooth and 3DM-GX1®
- RS-485 Addressing Limitations
- 3DM-GX1® Analog Output Option
- Orientation conversion formulas
- 3DM-GX1® Hard Iron Calibration
- 3DM-GX1® Timer Ticks, Calculation Cycle and Data Output Rates
- 3DM-GX1® Fastest Data Output Rates
- Using the 3DM-GX1® with the V-Link®
Code Samples
- Sample Code including C, VB, Labview
- Certified LabView Plug and Play (project-style) Instrument Driver
- Sample C Code Showing Euler Angles
- Sample Linux Code
FAQ's
How To Order
To discuss configuration for your specific system requirements, please contact sales at sales@microstrain.com or call 802-862-6629.
For large quantity orders or OEM discussions, please contact mirobinson@

