The GDM350 / 360 is a high-performance 3D dynamic electronic compass with a built-in 9-axis inertial measurement unit (IMU), integrating a three-axis accelerometer, a three-axis gyroscope, and a three-axis magnetometer. By combining the high dynamic angle measurement capability of the gyroscope with the high stability attitude detection characteristics of the accelerometer, and using advanced dynamic inertial navigation algorithms, it can calculate pitch and roll angles in real time under complex motion conditions. This product employs hard and soft magnetic intelligent calibration technology, which can effectively suppress environmental magnetic field interference and improve the measurement accuracy of geomagnetic azimuth. The central processing unit calculates heading data in real time and performs full-range magnetic azimuth compensation based on dynamic pitch and roll angles, maintaining reliable heading output even under large tilt angles of ±85°.
The electronic compass is equipped with a high-performance DSP processor and supports standard communication interfaces such as RS232/RS485/TTL. Other communication protocols can also be customized according to requirements. Its compact design combines low power consumption characteristics and is suitable for high-precision measurement and integrated control scenarios such as ship navigation, antenna stability control, and model systems. It performs stably under strong vibration and harsh environmental conditions.
Technical Characteristics
❖ Tilt resolution: 0.1°;
❖ Static tilt accuracy: 0.2°, dynamic accuracy: 0.5°;
❖ DC 5V power supply;
❖ Standard RS232/RS485/TTL output interface;
❖ With hard magnet, soft magnet and tilt compensation.
Application Field
❖ Marine Navigation and Surveying ❖ GPS Integrated Navigation System
❖ Antenna Servo Control ❖ Infrared Imager Integration
❖ Laser Ranging Equipment Collaboration ❖ Map Completion System Support
❖ ROV Underwater Robot Navigation ❖ Marine Survey Instrument Support
Specifications
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GDM350 / 360
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Parameter Indicators
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Compass heading parameters
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Heading accuracy
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0.8°
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Resolution
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0.1°
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Pitch measurement range
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±90°
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Roll measurement range
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±180°
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Tilt accuracy
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Static 0.2°
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Dynamic 0.5°
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Resolution
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0.1°
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Tilt compensation angle range
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Roll ±180°
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Pitch＜85°
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Gyroscope
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Range
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500°/s
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Accelerometer
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Range
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4g
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Calibration
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Hard iron calibration
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Yes
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Soft iron calibration
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Yes
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Magnetic field interference calibration method
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One full rotation (2D calibration)
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Physical characteristics
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Dimensions
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Shell : L55×W37×H24mm
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PCBA : L33×W27×H9.7mm
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RS232/RS485/TTL interface connector
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Aerospace connector
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Board connection cable:4PIN 30cm terminal wire
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Interface characteristics
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Startup delay
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<50ms
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Output rate
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5~100Hz(configurable)
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Baud rate
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4800 to 115200baud
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Output format
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Binary high-performance protocol
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Power supply
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Supply voltage
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(Default) DC +5V
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(Custom) DC 9~36V
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Current (MAX)
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45mA
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Ideal mode
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35mA
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Sleep mode
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TBD
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Environment
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Operating range
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-40℃~+85℃
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Storage temperature
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-40℃~+85℃
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Vibration resistance
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2500g
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Electromagnetic compatibility
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Complies with EN61000 and GBT17626
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MTBF
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≥98000 hours / time
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Insulation resistance
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≥100 megohms
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Shock resistance
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100g@11ms, triaxial (half-sine wave)
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Vibration resistance
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10grms / 10~1000Hz
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Weight
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PCBA: ≤25g Shell: ≤135g (excluding cable)
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PIN Definition
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PIN/Thread Color
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Definition
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Description
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Black
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GND
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GND
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Red
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DC 5V
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VCC
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Yellow
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TTL/RS232_RXD/RS485_D-
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Receive Data
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Green
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TTL/RS232_RXD/RS485_D+
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Transmit Data
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Product Dimensions
PCBA Size: L33×W27×H9mm
Installation Size: L28.5×W22.6×H2mm
Recommended screws: 4 M3 screws(copper screws)
Product Tags:
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GDM350 Dynamic 3D Electronic Compass 9 Axis Output Protocol DC 5V Images
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