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Old 28-03-2017, 08:44   #1
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Evermore SA320 -raymarine C80 via NMEA connection

Hi. i have a evermore SA320(RS232 interface). i am trying to connect it to my raymarine C80 display via NMEA 0183 connection, using raymarine R08004 cable.
i am under the impression that the gps reciever needed a DC-DC reducer so i bought this little gadget and connected


power supply indicated on package for the gps is: VDC 9V-34V
the reducer i have says IN 12v OUT 5V 3A is this not suitable?
Now lets talk about the cables

this is the NMEA cable. correct fit&size etc. so it should work.

colors are: black(shield) , brown, yellow, white, green
Here is the discription of which color indicates what


and this is the picture of SA320 cable

there are red, green, white, black,and the other black(shield)
so i connected the red and black to the power coming from the above mentioned reducer. i can probe the power at the connection point to the gps so i can say it works.
i tried different variations but the chartplotter doesn't show a gps fix, meaning my setup not working. Can someone help?
also here is the meaning of the wire colors indicated on SA 232 packaging
red: VCC power supply (VDC 9V-34V)
green: RS 232 Tranmit tx , output signal
white RS 232 receiver RX, input signal
black: power ground
black isolated: shield wire, signal ground
thanks
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Old 28-03-2017, 10:12   #2
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Re: Evermore SA320 -raymarine C80 via NMEA connection

just got off the phone with raymarine. they say connect it directly to the battery and i need to use green and white wires on nmea cable. i will bbe trying this.
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Old 28-03-2017, 11:38   #3
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Re: Evermore SA320 -raymarine C80 via NMEA connection

in case anyone having the same problem in the future:
green from nmea connects to white sa320
white from nmea connects to green sa320
it operates between 9-34 V so connect directly to 12V battery. I m good now.
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Old 28-03-2017, 14:48   #4
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Re: Evermore SA320 -raymarine C80 via NMEA connection

No need for power reducer imho unless you boat power is outside the 9-32V range (very rare).

Raymarine cable shows an rs422 interface (4 cable). 320 shows a rs232 interface (3 cable - gnd is common for both IN and OUT signal.

If you google, you will find how some people were lucky to interface the two, but I had no such luck interfacing a Sim AIS (422) into a Sim plotter (422).

BTW Brooks booklet explains the trick as well. Except it never worked for me on plain hardware, possibly it works on brooks mux.

Since the same story seems to return for ever and ever I will try to link the magic tric recipe later. But as said it did not work for me.

SHORT ANSWER: You need a 232 to 422 converter.

Cheers,
b.
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Old 28-03-2017, 14:52   #5
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Re: Evermore SA320 -raymarine C80 via NMEA connection

Look into to get the broader view:

http://2.bp.blogspot.com/-juIIaK1H_u...k/s1600/12.bmp

But this is not the trick link. I am browsing browsing ... ;-)

I'll be back ;-)

barnakiel
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Old 28-03-2017, 15:14   #6
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Re: Evermore SA320 -raymarine C80 via NMEA connection

OK here linking to how others claim they did. I say this did not work for me.

http://www.moonglowtech.com/products...PPS_wiring.gif

http://2.bp.blogspot.com/-5QGyNwQyyt...600/SERIAL.jpg

http://tomlohre.com/NMEA%20Cable.jpg

http://airmartechnology.com/uploads/...nector_dwg.jpg

Imho the problem is that connecting a rs232 into a PC is one thing while connecting a rs232 device with a rs422 device is another.

Have fun. Remember the converter thing.

Cheers,
b.
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Old 28-03-2017, 15:18   #7
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Re: Evermore SA320 -raymarine C80 via NMEA connection

Page 3 point 4 explains how brooks does it.

http://brookhouseonline.com/pdf%20fi...2%20manual.pdf

PLS let us know how you did.

Cheers,
barnakiel
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Old 10-05-2019, 02:26   #8
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Re: Evermore SA320 -raymarine C80 via NMEA connection

Will the autopilot still work with the Evermore SA320 modification?
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