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[TG] [TG11] AIS 950 EPFS is lost
06-02-20, 01:58 AM
Post: #2
RE: [TG11] AIS 950 EPFS is lost
Hello CYOAJay,

EPFS Lost means that the AIS is no longer getting position data from the external GPS receiver and has reverted to its internal receiver. This is an IMO-mandated standard warning. What is the external GPS source? Can you check its IEC61162-2 (AKA NMEA0183) connection to the relevant Sensor port, and that it does definitely have a good GPS fix?

I've seen this warning before on a series of boats that had an installation issue that caused severe noise that was corrupting NMEA/IEC traffic, but it could be as simple as that the external antenna doesn't have a good sky-view.

Regards,
Tom

Raymarine since 1999.
Interests: Diagnosis of problems in sonar/fishfinders, NMEA2000, ethernet comms, autopilots, thermal cameras
Location: Sydney, Australia.

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[TG11] AIS 950 EPFS is lost - CYOAJay - 05-28-20, 07:17 AM
RE: [TG11] AIS 950 EPFS is lost - Tom - Raymarine - Moderator - 06-02-20 01:58 AM

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