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Introduction and Presentation
Read this section to get a basic knowledge of your door sensor.
Description
Firmware
Door Sounder Sensors

Introduction and Presentation
Read this section to get a basic knowledge of your door sensor.
- Introduction
- Applications
  Here are some examples of data received from Spread Sensors and Door Sounder sensors displayed in Scala2.
- Safety Guidelines
  Read this section before using the product.
- About Spread Sensors
  You can use Spread sensors in three different modes: single trawl, twin trawls with double distance and twin trawls with triple distance. The following schemas illustrate the three modes and how Spread sensors communicate with each others.
- Description
  - Firmware
    - Spread Sensors
      Firmware for Spread Sensors depends on your type of trawl and on the distances they measure.
    - Door Sounder Sensors
  - Technical Specifications
  - Main Parts
  - Operational Mode Indicator
- Installation Steps

Door Sounder Sensors

The first generation of Door Sounder sensors uses the firmware called Door Sounder, FIRM124. It is compatible with all A1 PCBA.

The second and latest generation is Door Sounder with target strength calibration. It uses the firmware called Bottom Explorer V3, FIRM129. It is compatible with A1 PCBA with rev8 and higher.

Firmware is loaded into both port and starboard door sensors.