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Sony VPLVW11HT RGB input question

Discussion in 'Projectors, Screens & Video Processors' started by Nobber, Jun 7, 2002.

  1. Nobber

    Nobber
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    I want to connect my DVD Sony 850 multi changer to my new PJ but I am not sure whether I need to order a Scart to 3 plug (RGB) or scart to 4 plug

    any help appreciated

    thanks
     
  2. Gordon @ Convergent AV

    Gordon @ Convergent AV
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    Scart to 4 with them being wired for Rout Gout Bout Compositeout at Scart end.

    Gordon
     
  3. graham.myers

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    Whats the quality like in this scenario?

    I'm currently using a S-Video cable from my 850 to my 10ht

    I was contemplating a progressive scan player. I was also going to buy some decent component cables for my aging pioneer 606 prior to the PS player.

    But if, for the sake of a scart to RGB cable my 850 may last a bit longer until the philips 963 lands in September sometime.
     
  4. Nobber

    Nobber
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    Thanks Gordon

    Sorry to be a bit thick....but

    R=Red
    G=Green
    B=Blue

    = 3 three leads


    Composite?? = the fourth could you tell me whats this is for


    also whats the sync/hd plug for on the PJ doesn't this need to be connected?




    thanks for your help
     
  5. minimivic

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  6. Nobber

    Nobber
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    when i check the manual the componet leads number 3 and I am sure on the back of the amp I am going to buy (Sony VAE55ES) there are only 3 inputs so where does the 4th go

    Sorry Mr confused
     
  7. Gordon @ Convergent AV

    Gordon @ Convergent AV
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    Nobber:

    Component and RGB are not the same thing. Component Y,Pr,Pb has a sync signal carried along with the Y part. RGB from a scart is, by itself, no use to a display device as a sync signal is required still. In this case it is extracted by the display device from the composite video signal.

    So, in the scenario where you are feeding RGB from Scart to a VPL10/11 video projector you would send the RGB bits to the red, green, blue sockets and then the composite signal to the next socket along marked "sync" probably marked "h sync " in fact.

    If you wanted to send an RGB signal through an av receiver then you could try feeding the RGB bit to the PrYPb sockets respectively and also sending a composite signal to the socket corresponding to that source's composite input on the amp. You would, hpwever then have to send the component monitor out to the RGB sockets on the projector and also the composite monitor out to the projector's "h sync " socket as above....This means if you have a composite only source you feed through the amp it's not going to work.....

    So, the best solution with a VPL11/10 is probably to feed everything direct to its own input on the projector.

    Gordon
     
  8. Nobber

    Nobber
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    Ok thanks Gordon, the bit that was confusing me was RGB and Component i thought they were the same

    anyway one last question

    Kit:

    Sony VPLvw11HT 2 component inputs

    Sony VAE555ES 2 component inputs/Outputs

    Amstrad digibox 1 Scart

    I have have already run ONLY 3 cables through the ceiling!!! and if I undersand your last post correctly I can use these my new DVD which has component output, but I have to run another 4 for the Digi BOX!!

    any other way? I really want to avoid running another 4 cables




    Cheers
     
  9. Dangerous

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    If you check your manual it will tell you that the sync signal is required on the Green input, connecting a fourth cable i.e a composite signal will NOT give you sync on green. If you have a scart output from your Digibox (which you should) you will need a scart to three phono with sync on green, this being achieved by the connection of pin 19 (which carries the sync signal) to pin 11 (the green carrier).

    Regards

    Dave
     
  10. Nobber

    Nobber
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    Ok so now I have two conflicting posts

    so what now?



    3 or 4

    I wish I was DEAD
     
  11. Gordon @ Convergent AV

    Gordon @ Convergent AV
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    Indeed a conflict. You can use three cables by putting a 50ohm resistor between pin 19 and pin11 at scart out from Digibox and also on DVD so that they both have sync on green rgb outputs. Then feed that throught the amps Component switcher and on to the projector. Set projector to GBR and it should work.

    I am sure that I have had rgbwith comp[osite sync working as well. Don't have unit to test though so if the instructions say sync on green then do it that way.

    Gordon
     
  12. Dangerous

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    Hello Gordon and Nobber
    The reason I'm sure that the fourth composite connection won't give you the sync signal you need is that it didn't work when I tried it. I purchased a scart to 4 phono from Keene electronics to watch TV on my 10HT but the projector wouldn't lock on to the signal. After asking an engineer at Keene he advised me to connect pin 19 to pin 11 with a 50-ohm resistor in line (as you have described Gordon) and it worked. It's a bit fiddly to do so buying a suitable cable might be a better option.

    Dave
     
  13. Nobber

    Nobber
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    Ok thanks

    the reason i started to panic was I have just ordered a cable from Keene Electronics

    A Scart to RGB with a sync on Green, so last question.....


    can I plug the scart into the back of the Digi box and the THREE RGB connections into the back of the amps component input without added this resistor or do I nee to order something different

    Thanks
     
  14. Gordon @ Convergent AV

    Gordon @ Convergent AV
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    If the lead is doing what it says and taking sync from composite and putting it on green then you can run it through the ocmponent sockets on the amp.

    Gordon
     
  15. graham.myers

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    Nobber,

    I had a look in my cx850 manual this morning and I couldn't see where it mentions sync on green. Would you kindy point me in the right direction

    Following this thread I want to do the same as you, but I'll be ordering my cables from media factory. i'll have to modify my request. Based on this thread upto Friday, it seemed we needed a 4 cable. Now with this sync on green, it looks like only 3.

    I just want to make sure my manual says the same as yours before I order

    ta in advance
     
  16. Nobber

    Nobber
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    Graham

    I think it was Dangerous who said it was in the manual, infact I haven't even looked, my 3 part cable is already ordered, so if it doesn't work and the worse comes to worse I will have to modify it when it arrives, I'll let you know, although Keene did say it may be 10 days away!!


    thanks
     
  17. Gordon @ Convergent AV

    Gordon @ Convergent AV
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    Graham,

    I've re-read this thread and don;t see where nobber mentioned his Sony manual as saying it did sync on green output.

    The sync on green is a method of signal transmission that a VPL10 owner has said is recognised by his projector. There are no DVD players or Sky boxes that output this tupe of signal. That is why there is a requirement for a lead which strips the sync pulse off the composite video signal and puts it on the green one. This special lead from Keene presumably does this. If it doesn't then by doing the resistor mod inside the scart end it can be achieved anyway.

    Gordon
     
  18. graham.myers

    graham.myers
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    I'll wait until Nobber gets his Keene cable to see if it works before telling Joe at tmf what I need. tmf's email seemed to indicate some doubt with the sync on green cable.

    Nobber, I hope it does work, as I need 10m for this cable. Hacking 25% of the cable requirement will save me a few bob :)

    Unfortunatly I can't use one comonent link from my amp as I've already got another component DVD and my playstation 2 plugged into the only 2 component inputs of the amp. So that's another 10m component. More expense.
     
  19. Nobber

    Nobber
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    Ok i have just received my 3 cabled Scart to RGB plugged it in and every thing is hunky dory the picture is sharp and good....except on yellows and oranges (mainly) I can see what appears to be cross hatching( i am not sure whether this is the correct term) it seems to be more noticable when the objects are moving on the screen but is still there when the are stationary!


    any Ideas, I have tried the 2 different inputs and plugged the scart into my digi box as well and they(cross hatches) are still there


    any ideas



    thanks
    Nobber
     
  20. Gordon @ Convergent AV

    Gordon @ Convergent AV
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  21. graham.myers

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    Nobber, would you kindly post the part no. you ordered off keene so I can look at the spec

    thanks
     
  22. Nobber

    Nobber
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    The lead I just received


    Keene Electronics



    Code LTG15L
    Scart plug to 3 phono plugs, 2m sync on green

    thanks
     
  23. Nobber

    Nobber
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    can anyone explain why a 50ohm resistor has been advised??



    I think the output for composite is 75ohm my projector can deal with 75ohm?


    any ideas


    Nobber
     
  24. patmyhead

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    Hi Nobber
    How did your new lead work out was it worth the dosh ?
    I have been thinking of getting this lead but to maybe conect to my denon amp if it would work this way
    Do you have to use all 4 imputs to get sync ?
    At the moment compositve from sky is converted to component by the amp which gives good pics on the Sony 11ht I was wondering if a S video signal from sky box would give better pics
    P@
     
  25. Nobber

    Nobber
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    =============================================

    How did your new lead work out was it worth the dosh ?
    I have been thinking of getting this lead but to maybe conect to my denon amp if it would work this way
    Do you have to use all 4 imputs to get sync ?

    =============================================

    Well I'm still waiting to hear from someone on the forum re this 50ohm resistor question, as I currently still have the cross hatch problem
     
  26. Dangerous

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    Nobber
    Re:50 ohm resistor between pins 19 & 11. This advice was given me by an engineer at Keene electronics when I was originally seeking the correct configuration for the scart plug. I to have the cross hatching but don't know what the cause is. If you find the answer let me know!
    Dave
     
  27. Nobber

    Nobber
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    Hello Dangerous

    I have the pins 19 and 11 connected but with no resistor, great picture except for the cross hatching!!


    If no one knows maybe I'll just revert to s video ;-(

    or I could try the science forum.....
     
  28. Nobber

    Nobber
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    fed up of dickin around ordered Scart to S video!!!
     
  29. Cambo

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    I tried Scart to S-Video from my Sky box to my VW11HT and it didn't work. I don't think the digi boxes output S-Vid. (apart from some grundigs, or so I hear)
    As a stop gap at the present I connected the Sky box to my video by scart and connected it to the composite connection of the PJ. The picture is 'watchable' but not great.
    I have been wanting to try out the scart to 3 lead method for a while now. I may try wiring it myself. Can anyone recommend decent cable I could buy to try wiring it myself?
    Cambo..
     
  30. Gordon @ Convergent AV

    Gordon @ Convergent AV
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    Get some Ixos 110av cable and use it.

    I've seen crosshatching when the receiving device has not been set correctly and is receiving composite video (instead of Luminance while expecting YPrPb).

    John Sim ar RGBtoSvideo is now doing RGB to YPrPb convertor boxes. I've been briefly testing a prototype today and it is working well...

    Gordon
     

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