Humminbird 531478-2_B - Manual (Page 8)

differences between each received signal, the GPS receiver determines its
distance to each satellite. With distances known, the GPS receiver mathematically
triangulates its own position. With once per second updates, the GPS receiver
then calculates its velocity and bearing.
The GPS Receiver allows you to combine easy-to-use trackplotting and navigation
capabilities with advanced fishfinding. The following GPS functionality is currently
supported by your Fishing System when it is connected to the included GPS receiver:
• View current position
• View current track (breadcrumb trail)
• View precision speed and heading from your GPS receiver
• Save tracks and waypoints
• Travel a route and navigate from one waypoint to the next.
Connecting a GPS Receiver to the Fishfinder
Here's how to access GPS functionality using your GPS Receiver Accessory:
1. Attach the GPS receiver to your Fishfinder Control Head COM port using
the NMEA cable attached to the antenna.
2. If you are already using other Fishfinder accessories plugged into the COM
connector, you will also need to use the AS-YC ("Y") cable included in your
GPS Hardware Kit so that you can use both the accessories and your GPS
Receiver at the same time. Attach the COM connector of the "Y" cable
directly to your Fishfinder Control Head COM port. Attach the GPS receiver
to the NMEA-COM connector of the "Y" cable. Re-connect your Fishfinder
accessories to the ACCY-COM connector of the "Y" cable.
3. Power up the Fishfinder Fishing System (see your Fishfinder Operation
Manual for details).
4. When the Fishfinder detects the NMEA input from the GPS Receiver, the
Combo, Track and Bird's Eye Views will be added automatically to the
VIEW key function. A Navigation menu tab and the Navigation X-Press™
menu will also be added automatically to the Menu system.
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