4.13 GA150 connectionIf your MFD has a GA150 connection, the externalantenna can be connected to help improve theGNSS (GPS / GLONASS) receiver’s reception.Refer to the Connection Overview section toestablish if your MFD can be connected to a GA150.D13069-2211. GA150 external antenna2. MFDFor installation details for your external antenna,refer to the documentation that accompanied theantenna.Antenna cable lengthThe GA150 is supplied with a fitted 10 m (33 ft.)cable. The length of the antenna cable can beextended if required.The antenna cable length can be extended by up to10 m (33 ft.) giving a total maximum cable lengthof 20 m (66 ft.)50 ohm coaxial cable and reliable connectors(offering protection against water ingress) must beused when extending the antenna cable.Note: Extending the cable length by more thanthe recommended maximum length will result insignal degradation.Connecting an external antennaFollow the steps below to connect the GA150external antenna.1324D13074-11. Fully insert the antenna’s cable connector intothe GA150 connector on the rear of your display.2. Turn the locking collar clockwise until TIGHT.3. Push to protective boot over the connection onthe back of the display.4. Use the supplied cable tie to secure the protectiveboot over the connection.4.14 GNSS / GPS connectionDepending on display variant, your multifunctiondisplay may include an internal GNSS or GPSreceiver. If required the multifunction display canalso be connected to an external GNSS / GPSreceiver, using SeaTalkng® or NMEA 0183.GNSS / GPS connection — SeaTalkng®D12261-2SeaTalkng1321. MFD2. SeaTalkng® connection to MFD.3. SeaTalkng® GNSS / GPS receiver.An NMEA 0183 GNSS / GPS receiver can beconnected to the MFD by following the detailsprovided in section 4.9 NMEA 0183 connection— Power/NMEA/Video cable and the installationinstructions provided with the unit.Cables and connections 49
