GNSS (GPS) troubleshooting

Problems with the GNSS (GPS) and their possible causes and solutions are described below.

Before TroubleshootingGPSGNSS troubleshooting GNSS (GPS) problems, ensure your product has the latest software, by checking the Software Updates page on the Raymarine website www.raymarine.com/software

No Fix

Possible causes	Possible solutions
No GNSS (GPS) receiver connected.	In order to obtain a position fix your product requires a GNSS (GPS) receiver. Your product may include an internal GNSS (GPS) receiver, if not then an external GNSS (GPS) receiver such as the RS150 is required.
No antenna connected to GNSS (GPS) receiver.	Depending on variant, your product may include an internal GNSS (GPS) receiver. The receiver may or may not include an internal antenna. If your product’s internal GNSS (GPS) receiver does not include an internal antenna then you will need to connect an external passive antenna to the GNSS (GPS) / GA150 connection.
GNSS (GPS) Antenna location.	For optimum performance, external GNSS (GPS) antennas and GNSS (GPS) receivers that include an internal antenna should be mounted above decks and have a clear, unobstructed view of the sky, and not be in close proximity to any structural bulkheads or other electrical equipment or cables which may cause interference.
GNSS (GPS) switched off.	Ensure your internal GNSS (GPS) receiver is switched on in the relevant settings menu.
Geographic location or prevailing conditions preventing satellite fix.	Check periodically to see if a fix is obtained in better conditions or another geographic location.

No position data or manual GPS source missing

Possible causes	Possible solutions
Internal receiver is switched off.	Ensure your external or internal receiver is switched on.
Wrong Network output selected.	Ensure the correct network type and speed is selected in the Network output menu: Menu > Set-up > Network output.
Poor / damaged / insecure cable / connection.	Check that the connectors are fully inserted into the unit and locked in position. Check the cables and connectors for signs of damage or corrosion, replace if necessary.