GPS not Working on eS127 and eS128 today

[Chuck - Raymarine - Moderator]

John,

It was good to speak with you earlier today. Per our discussion, the Select Devices list may be used to determine which MFD has been interfaced to the SeaTalkng backbone and correspondingly, which device should be designated as the system's Data Master MFD. Next, we discussed how to identify the serial numbers of the MFDs within your system and how to use the Data Sources feature to manually select which of the system's MFDs will be designated as the system's source for GPS data. If using the GA150 GPS Antenna, then the MFD to which it has been interfaced should be designated as the system's source for GPS data. Finally, we discussed how to use the HDOP and EPHE fields within the GPS Status dialog to assess whether the system was acquiring a quality GPS position FIX from the selected GPS data source.

Finally, regarding the stability issue reported with the Chart application. Such stability issues may be caused by any of the following:
- corrupted/faulty cartography data stored on the chart card ... update each of the type's of cartography stored on the chart card (ex. Navionics Freshest Data update, etc.)
- the media on which the cartography data is stored is faulty ... fault isolate by testing the MFD with another chart card (ex. LightHouse Charts, Navionics+, etc.)
- the MFD's memory card reader has suffered a failure ... test ability to save screen image to the microSD memory card using each of the MFD's memory card reader slots ... any MFD having a faulty memory card reader will need to be serviced by Raymarine’s Product Repair Center
- Poor Ethernet communications between the MFDs ... may be caused by faulty communications cables or faulty Ethernet Network port of one of the MFDs ... recommend having the installer visit the vessel to isolate the problem.