Don,
Thanks for the reply. I'm familiar with the PC interface and have, in the hope of tracking down a problem, built a logger that uses that bus to interrogate the KPA500 at 10 Hz. I was hoping the AUX bus would give a faster detection of a spurious band change than my 10 Hz interrogation ^bn;. I'll look at the bus with my DSO but I have already been given information than suggests its data rate will be too low to be useful. I may have to resort to instrumenting the shift register signals from the front panel to the LPF but I was hoping to avoid that. 73, Andy ________________________________ From: Don Wilhelm <donw...@embarqmail.com> Sent: Sunday, April 29, 2018 2:45 PM To: ANDY DURBIN; elecraft@mailman.qth.net Subject: Re: [Elecraft] KPA500/K3 AUX bus specification The AUXBUS protocol is Elecraft proprietary and is not published. It is the single wire communications between the K3 and its options, both internal and external. The K3 Programmers Reference and KPA500 Programmers Reference gives you commands that can be issued from a PC or other connected computer - those commands are quite extensive and can give you complete control from a PC. 73, Don W3FPR > From: elecraft-boun...@mailman.qth.net [elecraft-boun...@mailman.qth.net] on > behalf of ANDY DURBIN [a.dur...@msn.com] > Sent: Sunday, April 29, 2018 3:59 PM > To: elecraft@mailman.qth.net > Subject: [Elecraft] KPA500/K3 AUX bus specification > > Can someone please point me to a definition or specification for the KPA500 - > K3 AUX Bus. I have the KPA500 Programmer's Reference but this appears to > only cover the KPA500 - PC interface. ______________________________________________________________ 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
