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post #11 of 19 Old 10-22-2013 Thread Starter
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Re: depth transducer adapter

Thanks for the advice mind, I have already located a number of suitable transducers, and they are all upwards of $150 which is more than the plotter cost me, and I don't have the inclination to install another transducer at the moment.
Worst case I blow it all up in which case I have an excuse for a whole new set of instruments and toys

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post #12 of 19 Old 10-22-2013
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Re: depth transducer adapter

Quote:
Originally Posted by PaulinVictoria View Post
Ah I'm going to figure out the pinouts and bodge something together. See what happens
Good luck!!!

(You'll need it.... )



EDIT: I don't really think you'll blow it up - it's more likely it simply won't work. ..but, yes, a good excuse for new kit.

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Last edited by Classic30; 10-22-2013 at 06:17 PM.
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post #13 of 19 Old 11-16-2013 Thread Starter
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Re: depth transducer adapter

So... I got round to spending a few minutes this afternoon, and as I expected, a simple bit of patching would let the existing transducer work with the chartplotter. Just need to find a connector now and solder it onto the cable.
Well, technically I already found a connector, but the company wants to charge me almost $27 to send a $17 1/2 ounce plastic connector to Canada.

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post #14 of 19 Old 11-17-2013
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Re: depth transducer adapter

Check here for wiring diagrams:
Marine Technology | Blue Heron Marine expertadvice

Also look at the specs for the replacement transducers for both pieces of equipment. There is a >50% chance that both want 200khz transducers and that you interchange them.

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post #15 of 19 Old 11-17-2013
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Re: depth transducer adapter

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Originally Posted by PaulinVictoria View Post
So... I got round to spending a few minutes this afternoon, and as I expected, a simple bit of patching would let the existing transducer work with the chartplotter. Just need to find a connector now and solder it onto the cable.
Well, technically I already found a connector, but the company wants to charge me almost $27 to send a $17 1/2 ounce plastic connector to Canada.
Don't you have the connector from the broken transducer? Just cut it off, strip the wires, and reuse it.

Glad that you got it working. Leaving my previous now unhelpful post because the Airmar wiring diagrams aren't well known about but are extremely useful.

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post #16 of 19 Old 11-17-2013
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Re: depth transducer adapter

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Originally Posted by Classic30 View Post
The first bit is true enough, but not the second - unfortunately. If you doubt me, have a look at the Airmar site, pick a common transducer (eg a DST800) and then look at the variety of different wiring diagrams available for the same animal. Truth is, it might look like the same beastie on their production line, but it's the different electronics that'll get get ya.
There are no electronics in a standard depth transducer. It just has two or three (adding shield) wires, black and blue in Airmar's coloring scheme. I've interchanged Garmin, Raymarine, and Autohelm transducers with my Raymarine chart plotter with no issues.

The other pins on the connector are for speed and temp. Those can be harder to interchange, but may still be possible. I couldn't get my Autohelm speed/temp transducer to play nicely with my Raymarine e7d, but found an older Raymarine ST70 speed <-> SeatalkNG adapter that it works well with.

You can see this in a standard pinout, like this one for Paul's plotter:
Self-Service Support

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post #17 of 19 Old 11-17-2013 Thread Starter
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Re: depth transducer adapter

It's a 50/200 transducer (which the plotter is capable of driving), the transducer is fine, it's the X51 head that's busted. That uses a different connector to the plotter (which is a Northstar) as otherwise I would have simply plugged the transducer into it

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post #18 of 19 Old 11-17-2013
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Re: depth transducer adapter

Ah, I thought you had a busted Northstar transducer as well.

I bought the connector for my plotter from Blue Heron Marine (linked above), but then I was poking around the used boat parts store here and found a transom mount transducer for my plotter that they sold me for $15. That got me a nicely molded connector that is a lot better sealed than the solder-style. It seemed like a waste to cut off a working transducer, but the cable was worth more than $15 to me.

If you have a used boat parts store in the region and can easily remove your Northstar plotter I'd just bring it with you and see if you can find one that fits.

Conxall makes most of these plugs, you might also be able to find a Canadian distributor for them. You can look around in the catalog here:
Switchcraft : Harsh Environment Connectors
http://www.switchcraft.com/Documents...ll_catalog.pdf

I think your plug is 6282-6SG-3XX

Where XX depends on the size of cable that you'll use. You can see this listed on page 12 of the second link above.

With a measurement of the connector on the plotter it'll be pretty easy to identify the part that you need.

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post #19 of 19 Old 11-17-2013
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Re: depth transducer adapter

FWIW we replaced a 25 yr old Signet DS display head with an RM ST40 head, played around with the wiring and connected the original Signet transducer - it works great.. In fact we have way more range now than the Signet ever gave us.

If you've got a frequency match it's just a matter of sorting out the connections.

Ron

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".. there is much you could do at sea with common sense.. and very little you could do without it.."
Capt G E Ericson (from "The Cruel Sea" by Nicholas Monsarrat)
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