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S-Video connections

Discussion in 'Blu-ray & DVD Players & Recorders' started by dolph, Feb 3, 2003.

  1. dolph

    dolph
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    I have just bought the SONY DAVC770 system, now I'm hooking this up to a Sony TV that has two RGB scarts and an S-VHS scart. The DAV system has either component out or s-video out (no scart) so I've got myself an S-VIDEO to Scart cable.

    Am I best to put this into Scart 3 (S-VHS) and if I then get myself an S-VHS VCR what do I do?

    Can and S-video cable carry an RGB signal?

    Andrew
     
  2. Silent Fly

    Silent Fly
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    Scart 3, should be ok but you can probably use Scart 1 or Scart 2 as well.

    If you buy a s-vhs vcr you can connect it to the telly using a cable like to one you just bought.

    Scart 1 (RGB): sky or digital set top box
    Scart 2 (s-video): DAVC770
    Scart 3 (s-video): S-VHS VCR

    No.

    As a simple rule you can say that:

    Composite: RCA cable
    S-VIDEO: s-video cable
    RGB: SCART

    However, SCART cables be used to send/receive composite, s-video or RGB signals.

    Things are sligthy more complicated but for the devices you mentioned this should be enough.
     
  3. dolph

    dolph
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    Does this mean I can set the second RGB scart to receive an S-video signal?
     
  4. dolph

    dolph
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    Can someone help on this - can an RGB scart properly accept an s-video signal. Does the sony allow you to change what the scart is going to accept?
     
  5. Silent Fly

    Silent Fly
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    The 1st, 2nd and 3rd SCART should all allow s-video signals.

    I would suggest you read the user manual of the TV set. It should explain how to set up the SCART ports.

    Probably you do not need to do anything but I think is worth to verify.
     
  6. Zacabeb

    Zacabeb
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    If one of the SCART's is labelled S-VHS then that is most likely the only SCART that supports S-video.

    S-video was introduced to the consumer market when S-VHS and Hi8 were released in the late 80's. In the old VHS system, the resolution in the recording is already so poor that it can be fit into a regular composite video signal without much loss, and cannot gain much when recording from a better connection.

    S-VHS and Hi8 had enough resolution that they could gain from better connections than composite video, so S-video conections were added. Like composite video they contain a black and white picture (luminance) and a color signal (chrominance) carried on a subcarrier, but they are led through separate wires in the cable. This way they do not interfere and limit each others resolution like they do in a composite signal, where they are added together.

    At first, S-video inputs and outputs were found only on said S-VHS and Hi8 equipment and this made people see them as synonymous. Therefore, many companies started calling S-video connectors S-VHS connectors, which is wrong but simple to market. Today those connectors are getting more uncommon as S-video can also be transferred over the pins in a SCART connector. In good (or bad) tradition, SCART connectors that can handle S-video are often labelled S-VHS by manufacturers.

    A SCART connector can be made accept any or all of the signal forms (composite, S-video, RGB and even "component") but this is rarely done to all SCART's for reasons of cost. Usually only one SCART accepts S-video and one or two accept RGB, but this may differ on some sets. Reasonably speaking, all SCART connectors should accept composite video.

    I have a little more info stored at:
    http://members.chello.se/zacabeb/whims/tvtech/videosignals/index.html
     
  7. dolph

    dolph
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    OK, as I can't use both a S-VHS video and my DAV through S-video output, can you get a component to scart cable - this way I could use the component RGB output on the DAV to and RGB scart input on the TV and save the S-VHS scart for my VCR.

    If you can has anyone give me any suggestions?
     
  8. Silent Fly

    Silent Fly
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    andrewdolphin,

    you cannot connect directly the component outputs of the DAV to the SCART input of the TV.

    A cable alone would not be enough. You would need a converter

    components->RGB or
    components->S-VIDEO or
    components->composite
     
  9. Zacabeb

    Zacabeb
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    If you have to make a choice in what device to connect through S-video, I think you should prioritize the AV center and connect S-VHS through one of the other SCART's. Then you will only get composite video for S-VHS, but DVD deserves S-video much more.
     

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