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Subject:
From:
Gareth Cranny <[log in to unmask]>
Reply To:
PCBUILD - Personal Computer Hardware discussion List <[log in to unmask]>
Date:
Mon, 29 Jan 2001 22:14:23 -0500
Content-Type:
text/plain
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text/plain (63 lines)
Mark, i'm not trying to pick a fight, but the primary use of a BNC style
connector takes place in the AV field.  BNC connections are used for
everything from composite to component video, RGBHV to 50kohm antenna
cabling and more.  All of the commercially designed VCRs use BNC instead of
coax.

BNC is said to give a better image quality, but when said like that it
sounds like the original fact has been taken out of context.  When we setup
shows with data projection, all sources are converted to BNC style cabling
before they are run.  This means Data (PC's/MAC's/anything from the scan
convertor) gets run through RGBHV, and video will be broken into component
video.  It's not so much an image quality issue as it is a signal
degradation issue.  Our projectors are often 30-100ft away from our
production tables, so this is very important.  However, like you said, when
used at home, the difference is so negligable you won't even see it.

cheers,

[evo]
[log in to unmask]

> You may read that a BNC produces a cleaner signal but if it does you will
> never notice the difference between a standard SVGA cable. The primary
> purpose of a BNC jack is to use on non computer equipment ..like medical
or
> industrial equipment...that is not equipped for a computer monitor.
>
> You can however buy a BNC cable  that has one end which is just like your
> SVGA cable to plug into your video card and the other to accommodate the
> BNC monitor connectors. The only advantage to a computer user is that you
> can use both cables into different computers and then use a monitor switch
> to go between the two.
>
> How easy this is to do depends on the monitor. I own two high end monitors
> that support both SVGA and BNC cables. An older IIyama 9017E 17 inch and a
> Mitsubishi 2040u 22 inch. To switch between computers with the IIyama I
> need to bring up the monitor control display, move down the menu to the
> Signal Source icon and then pick where I want the signal to go. The
> Mitsubishi has one dedicated button on the front of the monitor to quickly
> switch between the two cables (PCs).
>
> Keep in mind that you can buy a first rate Linksys electric stackable KVM
> switch that will control four computers (monitor, mouse, keyboard)  for
> less then  $125.00 at Buy.com so I wouldn't let the lack of a BNC cable
> have much influence in your monitor purchasing decision.
>
> Mark Rode
> The NOSPIN Group
>
>
> > >   To use BNC, do I need a video card that has BNC output? Or it is
> > > possible to convert d-sub into BNC without image quality
deterioration?
> > > What is the difference between them anyway? (planning to upgrade to
19"
> > > monitor, considering options)
> > > <> Max Timchenko [MaxVT]
>

                         PCBUILD's List Owner's:
                      Bob Wright<[log in to unmask]>
                       Drew Dunn<[log in to unmask]>

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