Airmar Wiring

[M-SAYEGH]

Hi,

I just recieved from overseas a garmin gps map 740s

and a Airmar p39 transducer nmea 2000

no idea how to it connected , plugs don't match

thanks alot .

best regards
M

 

[M-SAYEGH]

Anybody ?

 

[src]

The 740s supports NMEA 2000, so I think it's just a matter of getting the right cables to create a basic NMEA network. Search for an NMEA 2000 starter kit. As long as the AIRMAR has the right cable/connection to connect directly to the network, it should be a no-brainer. I don't know the AIRMAR product, however, so it may need a special cable. Check with AIRMAR to see if that part is "plug and play" ready for NMEA 2000, or if an adapter/cable is required.

I think you are expecting the AIRMAR to connect directly to the Garmin, and that's not how NMEA 2000 works.

 

[alnav]

It looks like from the online documentation that the Garmin doesn't directly accept NMEA 2000 but can join a NMEA 2000 network so you would have to create that network with other hardware, then the transducer NMEA 2000 cord would plug into that. The Garmin does appear to directly accept NMEA 0183 inputs. In the Airmar documentation online, it appears to be able to output both NMEA 2000 and NMEA 0183. NMEA 2000 is designed for a number of networked devices and I would think you don't need that unless you are have other components you want to connect together. So, the simplest solution would seem to be a NMEA 0183 connection. These connections are typically direct wired rather than with a pre-fab cable with connector. The Garmin installation document shows where the NMEA 0183 connections are made. I didn't see that on the Airmar site but it does say it is capable so there is likely a terminal or cable you will need to adapt to the Garmin's connection.

Edit: Sorry, I was writing just when src was. I looked around the web a little more and it looks like the Airmar is sold as either NMEA 2000 or NMEA 0183. Since you already have the NMEA 2000 unit, src's advice is best unless you were to change out your transducer for a NMEA 0183 model.

 

[kaz911]

Hi,

I just recieved from overseas a garmin gps map 740s

and a Airmar p39 transducer nmea 2000

no idea how to it connected , plugs don't match

thanks alot .

best regards
M

Hi M - greetings from the UAE

The Garmin 740s paired with a P39 SmartSensor will work fine. You need to get a NMEA 2000 Starter kit to get the interconnect cables + 1 extra NMEA 2000 T piece if not included with the P39. But please check the P39 is actually a NMEA 2000 model. NMEA 2000 devices ends in a round 5 pin female connector - where NMEA 0183 usually ends in "bare wires". You have the same 5 pin female connector on your Garmin. But to get it working - you need to set up the NMEA 2000 backbone with the NMEA 2000 starter kit.

A NMEA 2000 starter kit is anywhere from $60-$120 dependent on who sells them. https://buy.garmin.com/en-US/US/on-the-water/networking/nmea-2000-starter-kit/prod66030.html

But remember the P39 is ONLY a depth transducer. It is NOT a fish finder transducer compatible with the fish finder sonar built into the Garmin 740s. So when you connect the Garmin 740s with the P39 - you will get a depth reading plus temperature and speed - but it will NOT show the fish below your boat. The P39 sends "digital" information to your NMEA 2000 network - where the Garmin can pick it up. But if you put in a fish finder transducer - the Garmin receives "analogue" signals from the transducer and converts that into your fish finder display - and can convert that into depth reading as well. So if you need "fishfinder" - then you should get a "normal" transducer and not a Depth finder transducer.

 

[M-SAYEGH]

Thanks everybody
kaz that's real bad news ...

I guess i didn't do my homework before paying 1500$

 

[kaz911]

Thanks everybody
kaz that's real bad news ...

I guess i didn't do my homework before paying 1500$

Well a fishing transducer does not have to be expensive. How deep are you planning to fish?

 

[M-SAYEGH]

Well a fishing transducer does not have to be expensive. How deep are you planning to fish?

Well i just want a sonar that will show me the bottom and fish actually i'm not that into fishing but I thought it would me pretty cool to get this option

i saw somewhere online that the garmin airmar is really good i should get nmea1080 ( i guess ) for shallower waters and nmea 2000 for deeper waters , because its faster when it comes to networking

.

 

[kaz911]

Well i just want a sonar that will show me the bottom and fish actually i'm not that into fishing but I thought it would me pretty cool to get this option

i saw somewhere online that the garmin airmar is really good i should get nmea1080 ( i guess ) for shallower waters and nmea 2000 for deeper waters , because its faster when it comes to networking

.

The P39 will give you the depth which is = bottom. But only as a line nothing else.

The cheapest option for fishfinder - is the Airmar P66 for Garmin. You can find that for $100-$150. That will do fine until about 100-150 meters of water. Be certain to buy the P66 with Garmin 6 PIN connector - since it is available in MANY models. The 6 pin connector is compatible with Garmin 720/740/750. The new Garmin 721/741/751 have an 8 PIN connector.

http://www.starmarinedepot.com/Garmin+Transom+Mount+P66+Transducer.html (Its shows 2 models - GSD 22 for or GSD 24 - that "just" means GSD22 = 6 pin - GSD24 = 8 pin)

Since you have chosen transom mount - I would buy the SternSaver block - so you don't drill holes in your boat - in case you want to upgrade the transducer later. You "Glue" the SternSaver block on the back - and then you mount your transducer to the SternSaver. That is nice - especially if you want to upgrade later.