RS-232 to E-TEC EMM Cable

Electrical and electronic topics for small boats
jimh
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Joined: Fri Oct 09, 2015 12:25 pm
Location: Michigan, Lower Peninsula
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RS-232 to E-TEC EMM Cable

Postby jimh » Thu Apr 20, 2017 10:22 am

RS-232 to legacy E-TEC EMM diagnostic port cables are available from me for delivery to postal addresses in the USA via U.S. PRIORITY MAIL. You must have a postal address that can accept a small box. Priority Mail provides two-day delivery from Michigan to most of the USA. Payment is via PayPal. The cables are priced at $40, and this includes the cost of shipping. Please contact me via email if you would like to order a cable. Please use the SUBJECT line "RS-232 to EMM Cable" and send to jimh@continuouswave.com.

Connecting to the RS-232 serial data diagnostic port of the Evinrude legacy E-TEC outboard engine and its engine management module (EMM) requires an unusual cable. About eight years ago (2009) I wrote an article disclosing all the details of the cable and how to assemble one. The linked article explains in detail how to fabricate this special cable.

Many boaters were not equipped to fabricate these cables themselves, and I received a number of inquiries asking if I had cables to sell. From time to time I have made batches of these cables and offered them for sale. I recently made a new batch of the cables and have them available for sale.

The cables I make are assembled in Michigan by me using high quality new components. The wire is BELDEN 8451, an 22-AWG shielded pair communication cable, and is 8-feet long. The engine connector is made by Amphenol and is similar to the European Deutsch connector. I use the more expensive machined solder cup pins in preference to crimp pins. The common DB-9F connector is made by Cinch and is also a solder cup connector. The DB9 backshells are plastic and assemble with nuts and bolts rather than snapping together. The wire-to-pin connections are hand soldered, by me. I have extensive experience in soldering electrical and electronic components--five decades. Each connection is inspected visually with magnification and tested electrically for continuity and shorts. The entire cable assembly is tested at 230,000-bps in a serial data communication circuit.

These cable assemblies can be disassembled in the field if repair becomes necessary. Since there are no crimped contacts, all connections can be repaired and reused by soldering. The backshell of the DB9 can be easily removed if the cable needs to be threaded through a rigging grommet on the engine.

These cables are just cables. They do not provide a USB-to-serial adaptor that may be necessary for use with newer computers that lack actual physical serial ports.

The cables are available from me for delivery to postal addresses in the USA via U.S. PRIORITY MAIL. You must have a postal address that can accept a small box. Priority Mail provides two-day delivery from Michigan to most of the USA. Payment is via PayPal. The cables are priced at $40, and this includes the $7.20 cost of shipping. Please contact me via email if you would like to order a cable. Please use the SUBJECT line "RS-232 to EMM Cable" and send to jimh@continuouswave.com.

jimh
Posts: 6894
Joined: Fri Oct 09, 2015 12:25 pm
Location: Michigan, Lower Peninsula
Contact:

Re: RS-232 to E-TEC EMM Cable

Postby jimh » Wed Nov 15, 2017 1:42 pm

The cables I fabricate are just cables, and they do not include a USB-to-serial adaptor.

In the EV-Diagnostics software there are several recommendations for particular brands and models of USB-to-serial adaptor.

I cannot verify that every adaptor will work with every possible version of Windows in every possible installation configuration. Your outcome may vary.

In my own experience I have had good results with the Keyspan USB HS-19 adaptor. See

https://www.tripplite.com/keyspan-high-speed-usb-to-serial-adapter~USA19HS/

I believe Evinrude recommends a particular model made by StarTech, and sold on Amazon. See

https://www.amazon.com/StarTech-com-USB-Serial-Adapter-Powered/dp/B004ZMYTYC/ref=sr_1_2?ie=UTF8&qid=1510768096&sr=8-2&keywords=usb+serial+adapter+db9+startech

Attached below is a PDF file that contains an excerpt from the Evinrude software EV-DIAGNOSTICS and its HELP page regarding what USB-to-serial adaptors are recommended.
RS-232_Serial_Adapters.pdf
(110.96 KiB) Downloaded 597 times

jimh
Posts: 6894
Joined: Fri Oct 09, 2015 12:25 pm
Location: Michigan, Lower Peninsula
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Re: RS-232 to E-TEC EMM Cable

Postby jimh » Thu Nov 16, 2017 12:26 am

Using the RS-232 to EMM cable is typically done with the Evinrude EV-DIAGNOSTICS software. I do not sell or in anyway distribute EV-DIAGNOSTICS software. It is a product of Evinrude and is sold by authorized dealers. Check with your local dealer for availability and pricing for EV-DIAGNOSTICS software. Many dealers sell this to their customers. I don't know any particular details of the pricing.

jimh
Posts: 6894
Joined: Fri Oct 09, 2015 12:25 pm
Location: Michigan, Lower Peninsula
Contact:

Re: RS-232 to E-TEC EMM Cable

Postby jimh » Mon Nov 20, 2017 5:39 pm

I have just sold out the last batch of cables I made this boating season. I will be making a new batch after the holidays.

jimh
Posts: 6894
Joined: Fri Oct 09, 2015 12:25 pm
Location: Michigan, Lower Peninsula
Contact:

Re: RS-232 to E-TEC EMM Cable

Postby jimh » Tue Mar 20, 2018 8:07 am

I have just made a new batch of RS-232 to E-TEC EMM cables. These cables are for the legacy or G1 engines only.

Overseas shipping of these cables or even mailing into Canada or Mexico is not possible for me.

UPDATE: now sold out of cables. Next batch planned for Fall 2019.