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Can you share NMEA 0183 signal with 2 devices?

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Can you share NMEA 0183 signal with 2 devices?

Old 02-21-2012, 05:07 PM
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Default Can you share NMEA 0183 signal with 2 devices?

Hi
I first want to say that there are some really great guys on this board
I have read a bunch of threads this week that gave me some confidence to go ahead and buy a raymarine S1000 autopilot and do the instillation myself (hopefully)

I will be interfacing it to a garmin 760 chart plotter which has 2 NMEA 0183 ports
Port 1 is presently connected to a standard horizon DSC enabled radio
with NMEA standard speed output

for convenience of instillation
can I share the signal from port 1 with the raymarine corse computer or do i have to use port 2?
running wires is extremely difficult on this instillation (chartplotter is mounted to the T-top) and these 2 wires will add a 1/2 a day of labor and much swearing

thanks
joe
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Old 02-21-2012, 05:14 PM
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You can share the connection from Port 1. Generally, an NMEA0183 talker (GPS) can be connected to up to 3 listeners (DSC Radio, Autopilot etc).
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Old 02-21-2012, 05:20 PM
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Yes, the NMEA 0183 OUTPUT can be sent to 3 devices. A NMEA input can only accept 1 Input device.
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Old 02-22-2012, 02:36 PM
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thanks thats what i thought
but i wasn't sure if the VHF or the auto pilot were talkers as well

i think that the VHF can be a talker if i receive a DSC distress call it should show up as a waypoint on my garmin chart plotter


the auto pilot if its following a course designated by the chart plotter is just listening?
basically using GPS fix data to establish bearing?
i can't think of a scenario where it is talking?

Last edited by saltierdog; 02-22-2012 at 02:57 PM.
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Old 02-22-2012, 03:29 PM
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Originally Posted by saltierdog View Post
thanks thats what i thought
but i wasn't sure if the VHF or the auto pilot were talkers as well

i think that the VHF can be a talker if i receive a DSC distress call it should show up as a waypoint on my garmin chart plotter


the auto pilot if its following a course designated by the chart plotter is just listening?
basically using GPS fix data to establish bearing?
i can't think of a scenario where it is talking?
I installed my S1000 last week. It was easy but I did a ton of research. It worked the first time. The S1000 only listens does not talk. The VHF listens and may talk because that is how a DSC location is displayed on your plotter. The GPS can talk to 3 devices at once. I connected min in a little box via a Euro Connector.
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Old 02-22-2012, 08:24 PM
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I have shared GPS coords from my Garmin 188c via nmea with my Icom dsc vhf radio and rl70crc (radar display) on the same wire at the same time with no problems.
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