GDM355/GDM365 Dynamic 3D Electronic Compass, 9‑Axis Industrial Digital Heading Sensor with Tilt Compensation

Home Products 3D Electronic Compass Sensor GDM355 / GDM365

3D Electronic Compass

GDM355 / GDM365

Dynamic 3D Electronic Compass

Tilt resolution: 0.1°
DC 5V power supply
Standard RS232/RS485/TTL output interface
Static tilt accuracy: 0.2°, dynamic accuracy: 0.5°
With hard magnet, soft magnet and tilt compensation

Product manual

Product Introduction

The GDM355/365 is a three-dimensional dynamic electronic compass integrating a 12-axis inertial measurement unit, encompassing three-axis attitude angle measurement, three-axis accelerometer, three-axis gyroscope, and three-axis magnetometer. Utilizing the high dynamic angle response of the gyroscope and the stable attitude output capability of the accelerometer under static conditions, combined with dynamic inertial navigation algorithms, it can calculate the pitch and roll angles in real time during complex attitude changes. For geomagnetic azimuth, the product incorporates hard and soft magnetic calibration algorithms to effectively suppress geomagnetic interference in environments with magnetic field disturbances. The central processing unit calculates the heading in real time and uses dynamic pitch and roll angles to perform dynamic heading compensation for a wide range of magnetic azimuth, ensuring reliable heading output even at tilt angles of ±85°. The compass is equipped with a high-performance DSP processor, supporting standard interfaces such as RS232, RS485, and TTL, and other interfaces can be customized upon request.

The GDM355/365 features a compact size and low power consumption, making it suitable for applications with high vibration tolerance, such as marine vessels and antenna satellite search. It can also operate stably under harsh environmental conditions, making it suitable for various systems that require high precision in measurement, integration, and control.

Performance Parameters

GDM355/365		Parameter Indicator
Compass heading parameters	Heading accuracy	1°
	Resolution	0.1°
	Pitch measurement range	±90°
	Roll measurement range	±180°
	Tilt accuracy	Static0.2°
	Tilt accuracy	Dynamic0.5°
	Resolution	0.1°
	Tilt compensation angle range	Roll±180°
	Tilt compensation angle range	Pitch＜85°
Three-axis magnetic field	Measurement range	±800uT
Calibration	Hard iron calibration	Yes
	Soft iron calibration	Yes
	Magnetic field interference calibration method	Planar rotation (2D calibration)
Interface characteristics	Startup delay	<50ms
	Output rate	5~100Hz（adjustable）
	Baud rate	4800to115200baud
	Output format	Binary high-performance protocol
Power supply	Supply voltage	（Default）DC+5V
	Supply voltage	（Custom）DC9~36V
	Current (MAX)	45mA
	Ideal mode	35mA
	Sleep mode	TBD
Environment	Operating range	-40℃~+85℃
	Storage temperature	-40℃~+85℃
	Vibration resistance	2500g
Electromagnetic compatibility	Compliant with EN61000 and GBT17626
Insulation resistance	≥100megohms
Shock resistance	100g@11ms, triaxial (half-sine wave)
Vibration resistance	10grms/10~1000Hz
Dimensions	PCBA dimensions: L33×W27×H9mm Case dimensions: L55.5×W37×H24mm
Cable length/weight	PCBA trace length: 20cm±3cm Case trace length: 200cm±10cm
Weight	PCBA weight: ≤25g Case package weight: ≤117g (excluding cables)

Product Size