L3 comminications SERIES 5000, Operation And Maintenance Manual

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CHAPTER 4 SonarPro Ver. 11.0 Operating Instructions
Series 5000 Sonar System Operations and Maintenance Manual P/N 11210060, Rev. 13.0
4.17.2 Setting up the Compass Preferences
On the Compass Preferences tab shown in Figure 4-64 you can select whether to
display within SonarPro the raw compass heading from the towfish, which
includes a compass that provides a rough magnetic heading, or a deviation
corrected towfish heading which derives true heading. You can also select the
source used for positioning calculations within SonarPro, either the towfish
heading or the ship heading.
In addition, you can choose to have SonarPro automatically select which
positioning method to use or you can select a specific one. When choosing
automatic, SonarPro will use the ultra short baseline (USBL) system, if installed,
which uses a towfish mounted responder and a shipboard transceiver. If not
installed or if not operating, layback will be automatically selected if valid layback
parameters have been entered. If not, ship position will be automatically selected.
When choosing a specific positioning method, first choose either the USBL or the
layback option, depending on the system configuration.
Figure 4-64:
The SonarPro User Preferences Dialog Box—Compass
Preferences Tab