ECV eCompass Series

The ECV eCompass Series is a 3D electronic compass providing stable azimuth, pitch, and roll measurements in dynamic conditions. As an enhanced version of our ECG Series, the ECV includes a full suite of precision, 3-axis, MEMS sensors, and an optional dual-axis electrolytic tilt sensor, for the ultimate in near-level accuracy. A high-performance microcontroller orchestrates the fast measurement sequence, sensor calibration adjustments, frame-of-reference translations, trigonometric calculations, and advanced signal processing required to provide accurate heading, pitch, and roll outputs.

Additional Information


• Exceptional dynamic performance
• High accuracy
• Precise factory calibration
• Wide operating temperature range
• RS232 & RS485 output available
• Plastic or Aluminum enclosure options
• Fast response
• Low power
• Two independent serial channels
• In-System Configuration & Test


• Unmanned vehicles
• Robotics
• Platform stabilization
• Excavation machinery


The advanced capabilities of the ECV are supported by updated eCompass PC software that simplifies engineering verification and integration tasks.

The software provides the following functionality:

• Monitor and change compass settings
• Perform magnetic calibration
• Capture selected measurement data
• Maintain communication and setting logs

Performance Specifications

Heading Performance

Accuracy (rms)1±0.5°
Static, Tilt <35° Dip <60°
Dynamic, rate <150°/sec
Repeatability±0.3°Static, no filter
Response Time (msec)36Minimum, no filter
Dip Angle Range±80°
Tilt Range±90° Pitch/±180° Roll
Update Rate (measurements per second)27.5

Pitch & Roll Performance

Accuracy±0.3°Factory calibrate
Repeatability±0.2°No filter
Range±90° Pitch/±180° Roll(±42°) electrolytic tilt only
Settling Time (msec)50Gyro enabled


Supply Voltage (VDD)7-45Vdc unregulated
Supply Current (mA)Operating: 40
Idle: 10
Standby: 0.5


Operating Temperature-40° to 105 °C-20°C with electrolytic tilt
Storage Temperature-50° to 150°C
Shock (g)200Maximum horizontal (with electrolytic tilt)


Enclosure Material(ABS) Flame Retardant Plastic UL94 VO
Diecast Aluminum Alloy (Type 360.1)
PCB Mounting4 #4 screws, 1.4″x 2.6″ spacing
Connectors8 pin, single-row, 0.1″ friction header
6 pin RJ12 modular jack


Signal TypeRS-232 and RS-485
Baud Rate (bps)2400, 4800, 9600, 19200, or 38400
Character Format8 data, no parity, 1 stop
Input Buffer Size110 characters
Output Buffer Size110 characters
Output FormatNMEA 0183 and binary
Output Data Rate1 to 1650 sentences per minute
Operating ModesContinuous or sample
Angle UnitsDegrees, mils, radians, 16-bit integer

1: May require calibration after installation to eliminate the effect of local magnetic fields

*Specifications subject to change without notice on account of continued product development


Outline Drawing - Plastic Enclosure
Outline Drawing - Aluminum Enclosure
User's Guide

Click outside to hide the comparison bar