Ingo I agree, that would be ideal.
The problem, of course, is that if the MCU never gets the TTL equivalent of the ASCII request, it won't respond. Hence the issue. What I had hoped to find out is if there's any keyboard or other sequence that would cause the K2 to send data autonomously ... again, without any data prompt. This ability would allow me to show that the TX data side of the setup was in fact operational. I have since that message used an oscilloscope to see that the ASCII RS-232 data **is** getting level-translated and DOES appear on the correct pin of the main MCU, revision 2.04 firmware. I swapped out the v2.04 MCU for an earlier revision chip I had in the junque drawer.. This older chip may or may not have had the same problem.... it's been years since I upgraded to the 2.04 firmware so I do not recall ... and since both MCUs exhibit the same lack-of-response to any inbound serial command, I suspect I need a new MCU, not the Maxim chip. Steve KZ1X ______________________________________________________________ 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
