GP1871F

[JRTHOMPSON]

Have a new GP1971F and a two year old GP1971F, do I need to buy C-MAPS for both units, have them both on a NMEA2000 network? Can I just mirror the lower unit, Also when I power up the units with the C-Map card in them they will not power up. If I take out the SD card everything works fine.

 

[Johnny Electron]

Charts are not shared over the NMEA 2000. To have charts in each machine, you must have a chart card inserted in each machine. If the unit refuses to boot with the card inserted it is either the wrong type of mapping or the chart chip has a problem. Being that both units are doing this, I don't think you have a card reader failure. Have you verified the C-map chip is a valid 4D type? If so, you might want to contact C-map about exchange for replacements because it sounds like something is wrong with the chip.

 

[JRTHOMPSON]

Yes, it is the 4D map, it has been working for the last year. What if I just mirror the two units, will it read the map from the main plotter?

 

[Johnny Electron]

I am not understanding what you mean. The only mirror function that I am aware of is using an phone/tablet APP from ONE unit to mirror the screen. If it isn't showing charts on that unit it won't show it on the wifi APP either. The units can't connect/mirror each other or share charts with each other, if that is what you are asking.