ECL eCompass Series

The ECL low-power digital compass is designed specifically for commercial, industrial, and military users. The ECL series will be of particular interest to ROV and AUV manufacturers who are concerned with power usage and accurate heading in all types of challenging conditions.  In standby mode, it draws a mere 50 microamps and requires only 15 mA in run mode. It provides accurate heading data in less than a tenth of a second from wake up. An extended range tilt sensor is available that allows for ±60° of pitch and roll.

Additional Information

Dimensions 5.43 × 2.38 × 1.22 in

• Wide Operating Temperature Range
• Single-Supply Operation
• Low Power
• RS-232 & TTL 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±0.2°No filter
Response Time (msec)75Minimum, no filter
Dip Angle Range±80°
Tilt Range±42°±60° available
Update Rate (measurements per second)14

Pitch and Roll Performance

Accuracy±0.2°Factory calibrate
Repeatability±0.15°No filter
Range±42°±60° available
Settling Time (sec)0.5No damping


Supply Voltage (VDD)6-30Vdc unregulated
5.0Vdc regulated
4.9Vdc minimum
Supply CurrentOperating: 15mA
sample: 5mA
Standby: 50µA


Operating Temperature-20° to 70°C
Storage Temperature-40° to 125°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"/0.8”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 TTL
Baud Rate (bps)2400, 4800, 9600, or 19200
Character Format8 data, no parity, 1 stop
Input Buffer Size90 characters
Output Buffer Size110 characters
Output FormatNMEA 0183
Output Data Rate1 to 1200 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


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

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