Operation Manual
FarSounder, Inc.
F31552 (Rev. 2.6.1)
Page 42 of 56
7. Nav Info Display
7.1. Overview
The Nav Info Display provides basic conning information (Depth, Heading, Position, and Speed) to the user
in a text format when external NMEA sensors are connected to the SonaSoft user interface computer.
Figure 32. The Nav Info Display
When available, the most recently received conning information is shown in this display. If a particular sensor
is not available, that portion of the Nav Info Display will contain dashes to reflect the missing information.
If the user knows that there is no data available for a particular type of conning info, he/she may un-check
the "Listen" option in the Configuration Manager's NMEA Settings menu to suppress that type from being
displayed as dashes this display. Please see the section called “NMEA Message Selection” for more details.
7.2. Configuration Manager Options
In order for this component to work properly, NMEA compatible depth, heading, GPS, and speed sensors
must be connected to the SonaSoft User Interface computer. These sensors include: echo sounder, GPS,
gyro-compass, Doppler speed log, paddle wheel transducer, etc. More information on NMEA connections
can be found in the chapter entitled Section 4.2, “Connecting NMEA Devices”. Under the the Configuration
Manager's NMEA Settings menu, the user can specify the type of NMEA message to use.
For echo sounder depth, the user can select from the following NMEA messages:
•
DBT: Depth below transducer.
•
DPT: Depth below the transducer with reference to keel or surface.
For vessel heading, the user can select from the following NMEA messages:
•
HDG: Heading, Deviation, and Variation.
•
HDT: Heading True.
•
RMC: Recommended minimum Specific GNSS data.
•
VHW: Water Speed and Heading.
•
VTG: Course over ground and ground speed.
