Hi Andy, Don is correct.
Here is a little blurb that might help. http://www.ke7x.com/home/miscellaneous-k3-information/unexpected-agc-behavior/rs232-interfaces-1 ________________________________ From: [email protected] <[email protected]> on behalf of Don Wilhelm <[email protected]> Sent: Sunday, July 8, 2018 7:21 PM To: ANDY DURBIN; [email protected] Subject: Re: [Elecraft] [KX3] RS232 xcvr control when serial ports are occupied Andy, No TXD is TXD all the way through the path. Yes, the DTE TXD will have the drivers, and the DCE will have receivers, but it is TXD from end to end. RXD is the other way around because the DCE drives that line. Trsnsmit and receive are named with respect to the DTE. 73, Don W3FPR On 7/8/2018 8:39 PM, ANDY DURBIN wrote: > "TXD is really pin 3." > > > One end's TXD is the other end's RXD. That's obvious to those who have used > RS-233 for a while but if someone needs to ask then it may not be obvious. > Find the TXD pin on the source and connect it the RXD pin on the destination. > Sometimes it's easier to look with a scope than to try to understand the > documentation. ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
