On Fri, 17 Sep 2010, Michael Lewis wrote:
Forgot to say now I tested the Splitter cable connected to the tracker on
the PC end and..
PINs 5 & 2 5.59V
PINs 5 & 3 0V
So from your earlier message:
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
I'm going to assume that for that last bit you're talking about the
connecter at the end of the USB->Serial cable, not connected to
anything else, was what you measured. If that's the case then you
need a null-modem adapter or cable between the two, which will
connect (end-to-end) pins 2 to 3, 3 to 2, and 5 to 5, among others.
Another option is to rewire the DE-9 end of one or the other cables
so that you don't need the adapter, or to buy a couple of DE-9
connectors and do some quick soldering to make your own null-modem
adapter.
--
Curt, WE7U. <http://www.eskimo.com/~archer>
APRS: Where it's at! <http://www.xastir.org>
Lotto: A tax on people who are bad at math. - unknown
Windows: Microsoft's tax on computer illiterates. - WE7U.
The world DOES revolve around me: I picked the coordinate system!"
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