[Elecraft] How to test serial communications?

[Pete Smith]

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?
>>
>