icom icm 505 interface question

[Top banana]

another interface question. I am going to interface an icm 505, with a garmin 4212 plotter,replaceing the navman 7100 radio. I am stuck on the nmea interfacing. On the icom there are red in+ and white out+cables and both cables
have an earth sheathing, this is what is confusing me. I know that the red in goes to out on the plotter and white out goes to in on the plotter.but what do i do with the outer earth sheathing from each cable, Do i just twist the earths and send it to the buz bar. Any help gratefully recieved

The existing navman nmea cables didnt have the earth sheating.which is why i am stuck.

[Ribshop]

Top Bannana

The sheathing around your nmea + in cable is your nmea – in feed.

This may help

http://www.rib-shop.com/prodtype.asp...ageHistory=cat

[Top banana]

Cheers for that.there are two cables, one for allowing data in to the radio, from the gps, and the other sending data from the radio, ie buddy position,
distress, etc to show position on the plotter. So i will connect the other cable as your
diagram, but in reverse if that makes sence.

[Jeff]

Top Banana
I think you are correct - you are supposed to link the sheathing to ground as well ....

I found this from when I did mine
Make sure you have the 505 NMEA In grounded correctly (i.e. you have to have the - side of the NMEA connected to a ground source for the GPS input to work correctly). Remember there is a + & - connection for each 505 NMEA Input/Output source.

Red from the Icom goes to Blue from the Garmin and
White from the Icom goes to Brown from the Garmin
Screens from both to - ve

Jeff

[Top banana]

cheers jeff, i was going to link the sheathing to the ground buz bar of the boat as my plotter nmea ground is linked on the same buz bar. am i correct in this method.

[Jeff]

Spot on
Then you can have fun sending a position request to a mate and see his position pop up on the plotter - you will have to put his and other known Ships name/MMSI numbers in the directory of your garmin if you want his name/call sign dispayed instead of just the MMSI no
Jeff

[Top banana]

looks like busy day saturday.thanks for the help guys

[CJL]

Without this thread I would have been proper stuffed today - thank you Ribnet!!!