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Unread 12-05-2010, 11:52
Dave Flowerday Dave Flowerday is offline
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Re: Using a star configuation for Jaguars on CAN

Quote:
Originally Posted by Al Skierkiewicz View Post
Dale,
The six pin connectors are the only way to go here. The RJ-11's will move slightly in the connector body of the Jaguar and lift one or more of the spring wire contacts. If you examine the connector you will see a slight rise of plastic between each contact on the plug. If the wire doesn't sit down between the two adjacent plastic bumps, the wires move and either touch each other or don't contact the receptacle wires.
Al, are you sure you're not thinking of the handset plug (sometimes incorrectly called an RJ9)? An RJ11/12/14* jack has all of the necessary "slots" for the spring wire contacts on the Jaguar side and should not allow those spring contacts to move and touch each other. The only difference between the RJ11, RJ12/RJ25, and RJ14 is that the RJ11 has only 2 positions populated with contacts, the 14 has 4 loaded, and the 12/25 has all 6 loaded (but all 6 positions still exist in each case).

If anything, I would expect that an RJ14 would allow the outside spring contacts to sit even deeper in the plastic "slot" than an RJ12 because without a contact in the outside positions of the plug, the "slot" is actually deeper than a populated one.

* Note that a real RJ11 only has 2 contacts, which seems to contradict the Jaguar manual specifying at least 4 contacts. Seems like they should be recommending RJ12,14, or 25 only.