[Xastir] I finally got it!

Michael Lewis subarub4 at optimum.net
Fri Sep 17 16:55:17 EDT 2010


  Stand by Curt I'm going to upload a video to youtube I just did 
showing me checking the voltages on the null modem cable, splitter cable 
and the connector it's self on the TT4.


On 9/17/2010 4:40 PM, Curt, WE7U wrote:
> On Fri, 17 Sep 2010, Michael Lewis wrote:
>
>> Are you talking about the Null modem cable?
>>
>> If so the null modem cable connected to the USB to Serial connector 
>> the above is what i got for readings on the pins.
>
> Something's not making sense then, 'cuz you always get voltage on
> pin 2, no matter whether you're using the null-modem cable or not?
> Null-modem cables/adapters swap pins 2 and 3, so you should be
> seeing voltage on pin 3 at some point.
>
> You've now got all of the tools and knowledge you need to be able to
> detect which cables should or should not be connected together to
> get data to flow, ignoring handshake issues which are on other lines
> in the cable.  Once you get the proper drivers/receivers talking, if
> things still aren't working you should look carefully at TNC
> settings, Xastir interface settings, and handshake lines.
>




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