RE: Re: DVI Cabling advice needed

["Keith Doxey" <ukha@xxxxxxxxxxx>]

Hi Darren,

Will try and explain it a bit better.

A thru panel coupler for an F-Connector is easy as there is a centre
conductor and the body of the connector that is the screen.

A DVI connector (or D-type) is more complex. There are multiple rows of
pins
which for a given gender of the connector are in the same order.

Consider a 9 pin D-type as used on a serial port. The pins are arranged on
two rows and if you place two connectors side by side the numbering will
look like this

1 2 3 4 5      1 2 3 4 5
6 7 8 9        6 7 8 9

But they are both facing you and for a through coupler one has to be facing
away from you, flip the right hand one through 180 degrees and you get

1 2 3 4 5      5 4 3 2 1
6 7 8 9        9 8 7 6

So pin 1 of the front connector lines up with pin 5 of the rear connector
but it NEEDS to be connected to Pin 1 for it to be electrically
"straight
thru" therefore the pins need to be cross wired to each other. Hence
the
comment about "mirrored" connections

Given Phils comments regarding cable length and signal degradation I would
not do what you are trying to do. (I have to bow to Phil's superior
knowledge here as I dont own any DVI kit yet.)

I know you said you dont want a cable poking out of the wall but there isnt
really an easy alternative. To make it neater you could use a modular
faceplate with a removable blank insert. Drill a hole in the centre of the
blank the same size as the diameter of the cable. Then cut the blank in
half. Feed the cable through the modular faceplate then clip the two halves
of the blank into place. You may need a spot of hot melt glue but the
result
will be a cable coming out of a neat hole without having to remove the
plug.

Not ideal I know but just offering a possible solution.

Regards

Keith

> -----Original Message-----
> From: darren_karp2001 [mailto:darren@xxxxxxx]
> Sent: 09 January 2005 18:07
> To: ukha_d@xxxxxxx
> Subject: [ukha_d] Re: DVI Cabling advice needed
>
>
>
>
> Hi Keith and thanks for the reply. Not so sure I know what you are
> referring to with regards to the mirroring. If you think about it
> all I'm trying to do is extend my existing dvi cable with a coupler.
> However, the coupler needs to fit onto a faceplate and the rear part
> needs to be at right angles.
>
> Cheers
> Darren
>
> --- In ukha_d@xxxxxxx, "Keith Doxey" <ukha@d...>
wrote:
> > Hi Darren
> >
> > I think you will be unlikely to find what you need as the two
back
> to back
> > sockets would need cross wiring as they would mirror each other
> >
> > eg
> >
> > Socket 12345
> >        54321
> >
> > so whatever you found (if anything) would be quite bulky.
> >
> > Could you get two wireable sockets and connect them with very
> short wires,
> > that way one could be fixed to the faceplate and the other
plugged
> onto the
> > cable and your 90 degree problem is solved.
> >
> > Keith
> >
> > > -----Original Message-----
> > > From: darren_karp2001 [mailto:darren@a...]
> > > Sent: 09 January 2005 17:22
> > > To: ukha_d@xxxxxxx
> > > Subject: [ukha_d] DVI Cabling advice needed
> > >
> > >
> > >
> > >
> > >
> > > Hi All,
> > >
> > > I need to run my 10m M1-DA - DVI cable from my MCE box to my
> > > projector. The route will go from one end of my living room
near
> the
> > > floor, up and across to where the projector will be hung on
the
> > > ceiling. The problem is that as I'm trying to keep all my
cables
> as
> > > neat as possible I really wanted to be able to plug my MCE
box
> into
> > > a DVI socket mounted on a face plate in the wall using a
short
> DVI -
> > > DVI cable. What I'm looking for and can't seem to find is a
> chassis
> > > mounting DVI socket which has female connections both sides
and
> can
> > > be mounted onto a standard UK face plate. The other problem
> > > associated with this is that the DVI plug on my cable is
moudled
> and
> > > approx 2 inches long so any chassis socket would need to be
> right-
> > > angled.
> > >
> > > Can anyone advise? I really don't want to have to have a
cable
> > > poking though the wall or floor.
> > >
> > > TIA
> > > Darren
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > > Yahoo! Groups Links
> > >
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> > >
> > >
> > >
> > >
>
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