Press the up or down arrow keys to highlight the desired position format. Press the EXIT key to select the format and erase the menu.

NMEA / DGPS

The AccuMap 12 transmits data through the data port in the back of the unit using NMEA 0183 format, version 1.5 or 2.0. This data is used by other electronic devices such as marine autopilots for position and steer- ing information.

DGPS on the other hand, is a data input. DGPS is an acronym for Differ- ential Global Positioning System. Currently, it relies on a system of ground- based transmitters that send correction signals to small DGPS receivers. These receivers connect to the AccuMap 12 through the data port. DGPS gives you more accurate positions than is otherwise possible.

Eagle makes the “Eagle DGPS Beacon Receiver” that receives the DGPS signal broadcast by the Coast Guard at many locations around the United States. One benefit of this system is that the Coast Guard doesn’t charge for the use of this service. You can attach the DGPS Beacon Receiver to your AccuMap 12 and start using it immediately. However, please note that the Eagle DGPS Beacon Receiver is designed for permanent mount on a boat or other vehicle. It requires a four to eight-foot whip antenna.

See the sample wiring diagrams on the next page for general wiring pro- cedures.You’ll need to purchase a NDC-1 adapter cable for your AccuMap 12 Sport’s data port to connect to the DGPS receiver.

(Note: Connecting power to the AccuMap 12 through the NDC cable as shown in the diagrams is optional. However, the shield wire must still be connected to ground.)

Once the cables are wired, turn the AccuMap 12 on, press the menu key, and select NMEA / DGPS from the System Setup menu. A screen similar to the one at right appears.

NMEA 0183 OUTPUT

To turn the NMEA output on, highlight the “NMEA 0183 OUTPUT” menu, then press the right arrow key. If your other equipment works, then no setup will need to be performed. If your other equipment doesn’t recog- nize the NMEA data being sent by the GPS receiver and the wiring is correct, then you may need to change the NMEA or the serial communi- cation settings.

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Eagle Electronics 12 manual Nmea / Dgps, Nmea 0183 Output
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12 specifications

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