Get an inexpensive RS-232 breakout box. The LEDs and jumpers will help you see what is happening on the data and control lines and enable you to make/verify any cable you need. Compact gender changers address the male/female connector issue as well as the 25 pin/9 pin conversion. I still have a couple boxes that I used back in the 70s.
Ken WA2LBI On Tue, Jul 10, 2018 at 08:30 George Danner <gdanne...@gmail.com> wrote: > In broadcasting - we learned very quickly interfacing equipment with > RS232, > that if it worked once it would continue to work. > > Back in the beginning of using RS232 interfaces (cira. 70s) one of our the > engineers made a box with input/output pigtails in both male and female > with > a rotary switch that switched between straight through and "reverse" for > all > the various signals. Later we added 9 pin pigtails. Using that box quickly > let us know what would work and how to make the interface cable. > > 73 > George AI4VZ > > > -----Original Message----- > From: Walter Underwood > I never really understood RS-232 until I read “Technical Aspects of Data > Communication” by John McNamara. Very clear. Not sure it is worth getting > the book just for that, but you might check a library. > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wa2...@gmail.com -- Ken WA2LBI Sent from one of my mobile devices ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
