The latest copy of the spec I had was EIA-232-F. It did not specify the 8 pin modular connector. EIA-561 covers the 8 position modular plug when using it in an EIA-232 compatible system. RJ-45 (Registered Jack) is defined in FCC part 68 and is a whole other ball of wax!
Dave AA3EE >From: Jack Brindle <[EMAIL PROTECTED]> >Date: Wed Jun 21 11:43:38 CDT 2006 >To: Ron D'Eau Claire <[EMAIL PROTECTED]> >Cc: [email protected] >Subject: Re: [Elecraft] What's wrong with Serial >The current evolution of the RS-232 spec also now contains a pinout >for an RJ-45 8-pin modular connector. This connector is becoming very >popular in the telecom industry for serial port connections because >of its size. RJ-45s allow much high panel density that DE9 >connectors, even though they have the problem of being the same as >those used for ethernet connections. > > >On Jun 20, 2006, at 9:18 PM, Ron D'Eau Claire wrote: > >> Mike W8UR wrote: >> >> RS-232 has always specified a cable pinout; originally on an >> unspecified 25 >> pin connector. >> >> ----------------------------------- >> >> Okay, you made me go look. When I first encountered the RS-232 >> interface, >> IBM had not yet built the first "PC". >> >> Bob, W7AVK kindly forwarded to me a URL containing the info: >> >> http://www.interfacebus.com/Design_Connector_RS232.html#b >> >> Or >> >> http://tinyurl.com/zgnvp >> >> So the specification does contain a connector pinout for DB-9 and >> DB-25 >> connectors. >> >> That makes it all the more important to heed Don Wilhelm's >> observation: all >> DB-9's or DB-25 connectors do not carry RS-232 signals as described >> in the >> specification. One might assume a DB-9 or DB-25 does carry RS-232 >> signals >> with some assurance if it says "RS-232" next to the connector, but >> not when >> it says "AUX I/O" or anything else next to it. >> >> Ron AC7AC >> >> _______________________________________________ >> Elecraft mailing list >> Post to: [email protected] >> You must be a subscriber to post to the list. >> Subscriber Info (Addr. Change, sub, unsub etc.): >> http://mailman.qth.net/mailman/listinfo/elecraft >> >> Help: http://mailman.qth.net/subscribers.htm >> Elecraft web page: http://www.elecraft.com > >- Jack Brindle, W6FB >------------------------------------------------------------------------ >--------------------- > > >_______________________________________________ >Elecraft mailing list >Post to: [email protected] >You must be a subscriber to post to the list. >Subscriber Info (Addr. Change, sub, unsub etc.): > http://mailman.qth.net/mailman/listinfo/elecraft > >Help: http://mailman.qth.net/subscribers.htm >Elecraft web page: http://www.elecraft.com _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
