--- In "Theodore A. Roth" <> wrote:
>
> On Wed, Apr 29, 2009 at 11:46 AM, Damir Dzemidzic <> wrote:
> >
> >
> > I am trying to figure out the pin assignments on COM 2 Header (TS7800
> > board). According to Sheet 6 from Schematic (2007)the common is assigned to
> > pin 5.
> >
> > I checked the pin and but the ohmmeter shows the Pin 9 to be common.
> >
> > Is anyone whno knows how Technological Systems engineers defined pins on
> > COM ports.
>
> The COM2 10-pin header on the board is laid out like this:
>
> 1 | 2 | 3 | 4 | 5
> 6 | 7 | 8 | 9 | 10
>
> Where pin 1 is marked with the dot on the silkscreen.
>
> I just verified that pin 5 is connected to GND and to pin 5 of the DB9
> connector via a ribbon cable.
>
> You might have been incorrectly counting the header pins like this:
>
> 1 | 3 | 5 | 7 | 9
> 2 | 4 | 6 | 8 | 10
>
> Ted Roth
>
Thanks Ted, that was it.
------------------------------------
Yahoo! Groups Links
<*> To visit your group on the web, go to:
http://groups.yahoo.com/group/ts-7000/
<*> Your email settings:
Individual Email | Traditional
<*> To change settings online go to:
http://groups.yahoo.com/group/ts-7000/join
(Yahoo! ID required)
<*> To change settings via email:
<*> To unsubscribe from this group, send an email to:
<*> Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/
|