[CA] [CA11] E80 MFD using AIS GPS

[Derek60]

I have an em-Trak B100 AIS unit that is connected to the E80 MFD via bi-directional NMEA 0183 at 38400 baud. The AIS unit also multiplexes down the 38400 hi speed input to 4800 baud which is in turn connected to the Icom VHF using GPS sentences for DSC. All functions correctly.
The E80 has an external GPS unit directly connected via Seatalk.
As the AIS unit has configurable GPS output capability via the NMEA 0183 hi speed output port, will the E80 accept the GPS sentences from the AIS via the current NMEA 0183 38400 AIS input if the external MFD GPS was disconnected.
The reason I ask this is that if the current external MFD GPS unit fails, is the AIS unit a viable backup alternative.

Thanks
Derek