SH GX 2150 to Garmin 740S

L

localboy

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OK. Here goes. I am needing input, guidance, assistance, help...on hooking up the NMEA 183 between each unit at higher speed of 38400 Baud.

The directions on the SH website conflict w/ the SH owner's manual.

SH Manual says: brown wire =NMEA DSC output (-)
SH Website says: brown wire = AIS out (+)

I just want to know, simply, what wires from the radio go to what wires from the Garmin. Is that too much to ask?
Page 4 http://static.garmincdn.com/pumac/GPSMAP720_InstallationInstructions.pdf

http://www.standardhorizon.com/inde...075389DC4199A79B6C1&DivisionID=3&isArchived=0

RADIO:
BLUE NMEA GPS input (+)
GREEN NMEA GPS input (-)
GRAY NMEA DSC output (+)
BROWN NMEA DSC output (-)

GPS:
BLUE NMEA port 1 out
BROWN MNEA port 1 in
GRAY NMEA port 2 out
VIOLET NMEA port 2 in
GREEN spare
WHITE spare
ORANGE accessory on
YELLOW Alarm low
 
Thanks, JD.

Brent, I called SH today. I was on hold for 1/2 hour listening to the "your call is important to us...blah, blah, blah" every couple of minutes. I finally just left a msg.

I locked the boat up for the day. It was only frustrating me; I have no patience for wiring and lack advanced degrees in electrical engineering and computer science.
 
Mark, when I did the identical hookup last year I called the Garmin help number. They simply asked what model radio I was connecting to and walked me through it in a few minutes. I was impressed. I'll bet Garmin will take care of you in short order.
 
Mark, More power to you. You will like the results when you get there. Wish i could help. I had mine put in down at Rogers Marine. They also put in a switch on the hailer circuit so I can switch to either VHF for fog / hailer function. I guess I'm to chicken to get into all those wires. Sure like the outcome though.

Harvey
SleepyC :moon
 
Thank, Ken. I'll do that. JD will get back to me too. It's another work week, so I won't get around to it until Sat at the earliest anyway.....
 
If you go to your Standard Horizon 2150 link. At the top, there is a bar which says "description, Packages, accessories, and Files" Click on the Files--which will bring up a page of various chart plotters and how to hook them up.

Go down the first section, and I believe it is the 6th line--which shows a diagram how to hook up the Garmin 400, 500, 700 series to the SH 2150.
 
I took a look at the manuals and could make a good guess but you may have already gotten that far. I find it helpful to turn on the unit (GPS especially)) and get familiar with the port/communications settings and where on both units you could look to confirm that the connection is working. Sometimes this is harder in the driveway but twisting the likely culprits together and looking for results is a sure way to find the right combination. It either works or doesn't. Not that you shouldn't used the manuals to narrow your wire choices significantly. I have interfaced three similar combos so far and found the common ground to be the critical factor aside from the data in/out connections.

Greg
 
I found and posted the link Dr Bob mentions. That is where some of the confusion started. The link is not the same as the manual.

From my first post on this thread:
The directions on the SH website conflict w/ the SH owner's manual.

SH Manual says: brown wire =NMEA DSC output (-)
SH Website says: brown wire = AIS out (+)
Click to expand...

I'm just gonna call Garmin tomorrow. Hopefully, I'll get an actual person. :|

I'll report back.

Greg, am I to understand you that no damage can occur from incorrect wiring of the comm wires? That was my main concern. I know not to hook hot up to ground and vice versa...
 
If the radio and gps are powered from the same ground you likely have that part already covered. Connecting the comm wires input to output in either direction will not hurt anything however you mix the colors. The NMEA 0183 is a simple serial comm standard and is very low 0-5 dc volts provided minimal power by the device itself. I would be confident in mixing colors but maybe avoid connecting two outputs to each other. Not that it would blow anything but you can be sure it wouldn't get you anything useful either.

When connecting a radio to GPS for DSC as an example, turn both units on and make sure the GPS is showing a position then try the wires and watch the radio on the "proper screen" to see the coordinates pop up. When they do you know you have it. Apply that logic to your needs and twist away. I actually use a couple of little alligator clip jumper wires for this kind of testing as its easier to do quickly.

Good luck with those tiny wires.... We really need to create a meetup for jobs like this and get three to four owners in the boat with beers and just get it done through sheer will power and collective knowledge.

We could call them C-brat "sessions"

Greg
 
Where the confusion comes in, is that Garmin uses the ground as the return (-) in the MNEA sentencing.

In the 2100 (which I have) you have to use both of the Garmin ports, and port 2 is sent to 38,000 for AIS.

When you come to the much simpler to hook up Standard Horizon GX 2150, you do as the diagram shows: and only need one port set up:

That is Blue to blue--SH in (+), Garmin out (+)

Gray to Brown-- SH out (+), Gamin in (+).

Green to Black-- The common is (-) for both in and out on both the SH and Garmin--and is connected to black or ground.

So in some ways simple is harder--and the diagram is the way to go, instead of trying to figure out which wire- again because of the Garmin using the ground as the (-).

This way port 1 on Garmin is set as the high speed port--and information both in and out is used by this port, instead of using two ports.

If you test in the driveway, it will help if you are within range of AIS targets to have them show up. (Line of sight on VHF)
 
Boris,
Certainly not a RS 232 connector--but if you mean one way (+), both transmit and receive, with a common ground--yes. That seems to be the Garmin standard on the 400 thru 700 series. The 800 and 1000 series use the same convention NMEA 0183, ́ Black is ground (Power and NMEA 0183)
 
Hi Boris,
It would appear that SH, Garmin, and looking at the Lowrance, all use the 232 protocol. On the SH, there is one wire (green) which handles the (-) for the transmission. In the latest units, the out AIS/DSC go out thru the gray wire (+) and of course their green wire is (-) for the NMEA 0183 sentencing. On the older units SH GX 2100, brown was the AIS (+), and Gray was DSC (+), but in all cases there is the single green wire (-), which goes to ground on the Garmin. Jumping to Lowrance HS; Lowrance HS, uses a braid ground as their (-) for the NMEA 0183 sentence. This is probably one of the reasons that the NMEA protocol is slow (in comparison). I don't know about the auto pilot heading indicator, which is what I suspect you are using for the Radar overlay, but my guess is that you would go the the braid on the Lowrance, which logically would be grounded on the Lowrance. I am not aware of any "converter" for RayMarine's 0183--but as you know there are two types of "Sea Talk"--and a converter is necessary for these. I have to assume that everything you are using is NMEA 0183. Of course Lowrance Makes the Point One, which I understand is both a GPS and electronic compass--thus is used by some folks as heading indicator for overlay (and some say it is OK for MARPA), using the Lowrance radar. However, I note that it is NMEA 2000, so I doubt that would help you…

Garmin uses ground as the (-) in the NMEA sentence. So, yes, I meant that these are the RS 232 protocol. As for connector, I was referring to the RS 232 standard serial connector for computers--vs the USB connector. That is moot, as you explain what you are looking at.

Regards,

Bob
 
Finally had time. Wired it up. Quadruple checked all the connections. My wiring was confirmed by product support from Garmin.

Radio Gray wire goes to the GPS Brown wire
Radio Blue wire goes to the GPS Blue wire
Radio Green wire goes to the GPS Black wire
Radio Brown wire goes to the GPS Violet wire

I then programmed both, per the manuals, and entered my MMSI #.

I used the Garmin instructions (manual) for diagnostics. This is what installers use to verify everything is working. It shows the "sentences" input and output.

Everything said "has not been received" but one; VDM said "age is greater then 10 seconds". See the pics. The VHF does show position (lat/lon) and the little satellite icon is showing in the upper right corner. So I'm confident the radio is receiving the DSC info from the GPS plotter, I think. http://www.c-brats.com/modules.php?...ame=gallery&file=index&include=view_album.php

I need some input as to:

-what "has not been received" on the Garmin unit means;
-what "age is greater then 10 seconds" on the Garmin means.

This is all in my driveway, so I have no idea if I'm able to pick up AIS signals or not or if the units are working as advertised. :? :|
 
I just hooked mine up and went on the water--AIS appeared as it should.

It is possible that yours will work the same way.

Most of the sentences are not going to show up because of the location of the boat: DBT and DPT are depth. DSC is selective call information, as is DSE.
VDM is AIS/VHF data link message (no targets?)
WPL= waypoint location
VHW= speed and heading,
PAAN=proprietary message identifier

So I would not expect any of these messages to be received correctly, with out depth, speed, heading, etc--

You do have the location correctly (I assume).

I would put the boat in the water and see if it works correctly.
 
So here is the latest.

I wired it up as per the last posting (above) and did not change anything. Yesterday I fired everything up again; in the driveway. I increased the range on the AIS to 15 miles and picked up two boats transmitting. One stationary in Everett Marina and one proceeding up the Snohomish River.

Got their MMSI #s and everything. So, I surmise that it's working as advertised. Both showed up on the Garmin and the radio display.

I have some more tweaking/adjusting to do and some programming, etc once I get the boat out on the water, but I'm happy I was able to complete it.

I even wired up a small external flush mount speaker to the new radio so hearing everything will be better. The boat is totally dialed in now! Only luxury we do not possess is an auto-pilot. I may put a davit on at some point; my left shoulder is totally arthritic and that dinghy and engine keep getting heavier with each season. But for now we are simply going to use and enjoy her!

Thanks to all for your input and support! :smiled :thup
 
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