[HomeBrew] Re: Video signals

Wed, 16 Oct 2002 18:03:22 +1300

Hmmm yes,   I probably was a bit unclear in phrasing my question - but I
guess, from your replies, that the video line is 75 ohm? what about the
audio/video input on a tv or vcr etc. - are those 75 ohm as well?

The cameras have AV outputs which I am currently feeding into the
monitors and these are the ones I would like to "split" to feed into
multiple monitors/tv's
(some are tv's, some are monitors with AV inputs)

73
Mark

[email protected] wrote:

> The question that you asked might not be the one you wanted to
> ask.....
>
> Video is only one of a number of signals that go up the cable to a
> computer monitor.  In the NTSC composite video signal (TV), they all
> are
> on one line.
>
> If you want to know how to make two different monitors show the same
> information, you will have to "split" each of the signals.  Some are
> 75
> ohm impedance, some are not.

[email protected] wrote:

> Mark,
>
>     Almost any standard video or TV 75 ohm splitter is pretty safe for
>
> feeding two different monitors with no great loss.  The only time loss
> gets
> to be an issue is when LONG distances get involved.
>
> Bob - N0DGN
>
> ----- Original Message -----
> From: "Mark - ZL3VML" <[email protected]>
> To: "homebrew" <[email protected]>
> Sent: Tuesday, October 15, 2002 14:15 PM
> Subject: [HomeBrew] Re: Composite video
>
> | ** HOMEBREW REFLECTOR - Please do NOT cross-post messages to
> multiple
> mailing lists on the "To:" or "CC:" line of the e-mail message. **
> |
> | Hi Again,
> | Well, after reading up on the web, the conclusion is that it is damn
>
> | near impossible without building some complicated circuitry to
> convert
> | composite video to anything for a pc monitor due to all the
> different
> | graphic standards.  And cheaper to pick up a few old 10 or 12" tv
> sets.
> |
> | Now, another question - what kind of "splitter" would I need to feed
> a
> | video signal to two different monitors without too much loss of
> signal
> | definition?
> |
> | Cheers & 73
> | Mark - ZL3VML
> |