[Xastir] I finally got it!

[Michael Lewis]

  On 9/17/2010 4:15 PM, Curt, WE7U wrote:
> On Fri, 17 Sep 2010, Michael Lewis wrote:
>
>> I have it in front of me now.. with it plugged into the USB port
>>
>> Pins 5 & 2
>> 6.4 V
>>
>> Pins 5 & 3
>> 0V
>
> Pin 2 is being driven, and 3 is the receiver.
>
> The rules are simple, don't connect a driver to a driver.  A driver
> to a receiver works (sometimes a driver to two receivers).  Receiver
> to receiver won't hurt anything but won't accomplish anything
> either.
>
> See what's on the other end that it connects to.  A pin or small
> paperclip can be used to probe the female connectors but be careful
> not to damage (widen) the socket or push them in too far, contacting
> the circuit board.  If the probes on the DMM can make contact then
> it's best not to insert anything in the sockets.
>
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.

Null modem cable
Pins 5 & 2
6.4 V

Pins 5 & 3
0V


Splitter Cable "Y-Cable" (Connected to TT4 and measuring output from 
pins for the PC connection)

Pins 5 & 2  5.59V

Pins 5 & 3 0V