Sadly, doing this test with a brand new USB-to-serial cable, it works fine. However, that cable to the K3 yields nothing, and there are some funky voltages on U1 on the KIO3. I'm afraid I may have blown the RS-232 transceivers on both the computer and K3 ends. Time for a changeout.
73, Pete N4ZR The World Contest Station Database, updated daily at www.conteststations.com The Reverse Beacon Network at http://reversebeacon.net, blog at reversebeacon.blogspot.com On 6/7/2010 9:34 AM, Bill VanAlstyne W5WVO wrote: > Pete, > > If you are using HyperTerminal (or most other terminal emulation programs), > you can turn "local echo" on or off. When doing the kind of testing you're > doing, I turn it OFF to avoid confusion. > > (1) In the New Connection - HyperTerminal screen, select File>> Properties. > > (2) In the New Connection Properties dialog box, click the Settings tab, > then click the ASCII Setup... button. > > (3) In the ASCII Setup dialog box, make sure the "Echo typed characters > locally" checkbox is UNCHECKED. > > (4) Click OK to commit the ASCII Setup settings. > > (4) Select the COM port you are going to test in the New Connection > Properties dialog box and click OK to commit all settings for that port. > > Then the only thing that will appear on your screen as you type are the > looped-back characters. > > Hope this helps -- > Bill W5WVO > > -------------------------------------------------- > From: "Pete Smith"<n...@contesting.com> > Sent: Monday, June 07, 2010 4:17 AM > To: "R. Kevin Stover"<rksto...@mchsi.com> > Cc:<Elecraft@mailman.qth.net> > Subject: Re: [Elecraft] How to test serial communications? > > >> Thanks, Kevin. I assume (though the referenced test procedure doesn't >> say it), that with pins 2 and 3 shorted to each other, each character >> you type on hyperterminal should be echoed on-screen twice, once locally >> and once by the loopback. If that's the case. then it may be that I >> just have a bad *computer* port, which would be good news indeed. >> >> 73, Pete N4ZR >> >> The World Contest Station Database, updated daily at >> www.conteststations.com >> The Reverse Beacon Network at http://reversebeacon.net, blog at >> reversebeacon.blogspot.com >> >> >> On 6/6/2010 4:51 PM, R. Kevin Stover wrote: >> >>> I assume you're restarted both the computer and the K3. >>> You need to eliminate either the computer or the K3 as the problem. >>> Test the computer serial port by following these instructions. >>> >>> http://www.reliableracing.com/downloads/LoopBackTest.pdf >>> >>> If the port talks to itself the problem is with the K3. >>> >>> On 6/6/2010 2:13 PM, Pete Smith wrote: >>> >>>> Today we had a heavy lightning storm pass through the area. All of my >>>> antennas were disconnected, as were all the control cables, but the >>>> computer and my new K3 were still on. When I returned to the shack >>>> after the storm, everything appears to be working normally *except* that >>>> none of my software can communicate with the K3. The radio shows no >>>> error messages, and transmits and receives normally - just no >>>> communications. Alas, I have no other serial devices in the shack, and >>>> my backup computer does not have a serial port, so I can't test to >>>> determine whether it is the port on the computer or the KIO3. >>>> >>>> Is there any diagnostic that can be performed in the K3 to determine if >>>> in fact something's blown on the KIO3 board? >>>> >>>> >>> >> ______________________________________________________________ >> 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 >> >> >> > ______________________________________________________________ > 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 > > > ______________________________________________________________ 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
