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System Configuration and Display
Learn how to configure the receiver to be able to receive and display door sensor data.
Adding Sensors to the Receiver
You need to add the sensors to the receiver in order to display their data on Scala2.
Calculations for Positioning System
When configuring the positioning system on the system web page (Scala2 receiver page), you must consider the position of the hydrophones. When they are misaligned, you can calculate their misalignment angles with the following calculations.

System Configuration and Display
Learn how to configure the receiver to be able to receive and display door sensor data.
- Configuring the Hydrophones
  You need to configure the hydrophones to correctly receive signals from the sensors.
- Adding Sensors to the Receiver
  You need to add the sensors to the receiver in order to display their data on Scala2.
  - Adding the Sensor with a Configuration File
    You can add the sensor to the receiver with a configuration file that contains the sensor settings you configured on Mosa2.
  - Adding the Sensor Manually
    You can add the sensor to the receiver from Scala2, by entering the same settings as the ones in Mosa2.
  - Configuring the Positioning Settings
    You need to configure the positioning settings on the system web page (receiver page on Scala2.
  - Calculations for Positioning System
    When configuring the positioning system on the system web page (Scala2 receiver page), you must consider the position of the hydrophones. When they are misaligned, you can calculate their misalignment angles with the following calculations.
- Adding Data from External Devices
  You need to add to Scala2: warp lengths (Spread sensors only), GPS coordinates and heading data received from devices such as winch control systems or GPS compass.
- Configuring Trawl Settings
  You need to configure trawl settings to display the trawl on the chart and vessel 3D overview.
- Configuring Data Display on Scala2
  You can display on pages in Scala2 measurements taken by the sensors, such as the spread distance or the pitch and roll of the doors. You can also use the chart or 3D view to display the position of the trawl.
- Displaying Trawl Positioning from Scala2 on Olex
  You can export trawl positioning data coming from Scala2 to Olex software.
- Displaying Trawl Positioning from Scala2 on MaxSea Version 12
  You can export trawl positioning data coming from Scala2 to MaxSea v12 application.
- Displaying Trawl Positioning from Scala2 on MaxSea TimeZero
  You can export trawl positioning data coming from Scala2 to MaxSea TimeZero application.
- Displaying Trawl Positioning from Scala2 on SeapiX
  You can export trawl positioning data coming from Scala2 to SeapiX application.
- Displaying Bathymetric Data from GEBCO Database
  You can display bathymetric data coming from GEBCO database on the 3D overview of the vessel.
- Receiving Warp Lengths from Scantrol
  You can output warp length data from Scantrol iSYM Trawl Control application to Scala2 software.

Calculations for Positioning System

When configuring the positioning system on the system web page (Scala2 receiver page), you must consider the position of the hydrophones. When they are misaligned, you can calculate their misalignment angles with the following calculations.

Tip: A spreadsheet is available on Marport support website to help you complete this page: go to the Useful Resources page.

Note: Baseline length is the distance between two hydrophones. It must be in meters.

Receiver firmware below version 08.01: There are two misalignment angles that you should calculate. Misalignment Z is the more critical for correct positioning data. Make sure these calculations are correct if you enter them in Scala2.

Receiver firmware from version 08.01: Calculate misalignment Z only.

The drawings below show the misalignment angles and how to calculate them:


Misalignment X (angular offset around X axis)	Misalignment Z (angular offset around Z axis)

Sign of Angles

Once you have calculated X and Z misalignment angles from the above formulas, you need to add a positive or negative sign to the result. The sign depends on the offset of the hydrophones. Refer to the drawings below to know if you need to add a negative or positive sign to misalignment Z and X. The sign of the angles is important to receive correct positioning data.

Misalignment Z (view from above)



Negative sign (-)	Positive sign (+)

Misalignment X (view from behind)



Negative sign (-)	Positive sign (+)