ECS eCompass Series

The ECS digital compass represents the state-of-the-art in magnetic compassing. It combines a precision 3-axis solid-state magnetometer and a rugged 2-axis electrolytic tilt sensor to provide accurate heading and tilt measurements over a wide range of environmental conditions. The firmware and signal processing algorithms have been refined and improved over three prior generations of compasses to deliver the ultimate in performance from the available sensor data.

Additional Information

Dimensions 5.43 × 2.38 × 1.22 in

• Wide Operating Temperature Range
• Single-Supply Operation
• RS-232 & RS-485 Outputs Available
• In-System Configuration & Test
• Plastic or Aluminum Enclosure Options


• Unmanned Vehicles
• Robotics
• Weather Buoys
• Antenna Positioning
• Marine Navigation

Performance Specifications

Heading Performance

Accuracy (rms)±0.5°Typical, Tilt <35° Dip <60°
Repeatability±0.3°No filter
Response Time (msec)36Minimum, no filter
Dip Angle Range±80°
Tilt Range±42°
Update Rate (measurements per second)27.5

Pitch and Roll Performance

Accuracy±0.3°Factory calibrated
Repeatability±0.20°No filter
Settling Time (sec)0.5No damping


Supply Voltage (VDD)6 - 45Vdc unregulated
5.0Vdc regulated
4.9Vdc minimum
Supply CurrentOperating: 25mA
sample: 10mA
Standby: 2mA


Operating Temperature-40° to 105°C
Storage Temperature-50° to 150°C


Enclosure Material(ABS) Flame Retardant Plastic UL94 VO
Diecast Aluminum Alloy (Type 360.1)
PCB Size1.6"W x 3.0"L x 0.6"H, H required for tilt sensor
PCB Mounting4 #4 screws, 1.4″x 2.2″ spacing
WeightPlastic: 3.2oz (90.7g)
Aluminum: 7.2oz (204.1g)
Connectors8 pin, single-row, 0.1″ friction header
6 pin RJ12 modular jack


Signal TypeRS-232 or RS-485
Baud Rate (bps)2400, 4800, 9600, 19200, 38400 or 57600
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

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


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

Click outside to hide the comparison bar