RE: Electronics question

["Paul Gordon" <paul_gordon@xxxxxxxxxxx>]

That's not a bad idea... - nut how do you guarantee isolation between
the
+12V you put on the DTR pin going back to the port on the Avocent device?

I've got another potential route to investigate as well now... - the user
manual for the device clearly and unequivocally shows the DTR line to be in
pin 9 of the RJ45 socket, and so that's what I've been using. However, I
was
poking around the knowledgebase articles on Avocent's website and I've come
across at least one article containing a pin-out diagram that differs and
shows DTR on another pin. I think I should really get the meter out again
&
test what's available on all pins, - I only tested the specific pin pair
that I believed to be GND & DTR yesterday...

Paul G.

-----Original Message-----
From: ukha_d@xxxxxxx [mailto:ukha_d@xxxxxxx] On Behalf Of
Dave McLaughlin
Sent: 26 June 2009 03:59
To: ukha_d@xxxxxxx
Subject: RE: [ukha_d] Electronics question

Hi Paul,



Why not do what I do and make up a small adaptor cable with 2 D type, one
female, 1 male. You then wire pin to pin the RXD and GND and then connect
the +12V from the external power supply to the DTR pin on the module side.
This save the issue of modifying and causing issue with the module itself.



Dave.



Paul Gordon wrote:
>
>
>
> No it doesn't, so there's only the external PSU option methinks...
>
> Paul G.
>
> -----Original Message-----
> From: ukha_d@xxxxxxx <mailto:ukha_d%40yahoogroups.com>
<mailto:ukha_d%40yahoogroups.com>
> [mailto:ukha_d@xxxxxxx <mailto:ukha_d%40yahoogroups.com>
<mailto:ukha_d%40yahoogroups.com>]
On
> Behalf Of
> ant
> Sent: 25 June 2009 17:23
> To: ukha_d@xxxxxxx <mailto:ukha_d%40yahoogroups.com>
<mailto:ukha_d%40yahoogroups.com>
> Subject: Re: [ukha_d] Electronics question
>
> I don't think the Avocent box has any USB ports with which to provide
> the power? If it does, that's a much neater solution.
>
> cheers
>
> ant





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