Wega Owners Unite: Service Mode Survey Regarding 16:9 Compression

Discussion in 'Archived Threads 2001-2004' started by Chuck C, Feb 7, 2002.

  1. Chuck C

    Chuck C Cinematographer

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    There's a huge conflict regarding how the "ASP" parameter in the Wega Service Mode works. Some say it makes the picture to tall where scrolling headlines like those seen on CNN are cut-off. Others say it's a function of 16:9 enhanced mode only. There's yet another factor..the "ASP1" setting. Some say that's the key parameter for 16:9 mode. However, some sets don't even have ASP1.

    So here's the deal. Please respond with the model and mfg. date of your Wega and if you have successfully used ASP. Also list if you have ASP1 or not.

    We'll get to the bottom of this one or my name isn't Chuck C !
     
  2. Chuck C

    Chuck C Cinematographer

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    27FS12

    March 2000

    ASP Only

    Works Fine.
     
  3. Jeff

    Jeff Supporting Actor

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    32FS12

    Sept 2000 (I believe)

    ASP only

    Affects both 16x9 material and normal (4x3) TV viewing.

    Is it possible there could be another 16x9 ONLY adjustment and it's just not called ASP1?

    Jeff
     
  4. Tony Peck

    Tony Peck Extra

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    32FS12

    May 2000

    ASP Only

    Affects 4:3 and 16:9.

    My question is, if ASP adjusts the aspect ratio, then the width must be fixed while the height is varied. If this is the case, how is this different from VSIZ. I've adjusted both and they appear to do the same thing for a given HSIZ.
     
  5. Dan Curwin

    Dan Curwin Auditioning

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    32FV27

    August 2001

    ASP affects 4:3

    ASP1 affects 16:9 compressed
     
  6. Joe Schwartz

    Joe Schwartz Second Unit

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  7. Yohan Pamudji

    Yohan Pamudji Second Unit

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    Same as Dan Curwin.
     
  8. Chuck C

    Chuck C Cinematographer

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  9. Jeff

    Jeff Supporting Actor

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    Well I tinkered with many of the (gulp) ID settings and the position/sizing settings and there is nothing that can be done to fix the overscan without changing 4x3.

    Jeff
     
  10. Tony Peck

    Tony Peck Extra

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    Thanks for the info, but I still have a few questions :

    Are the scan lines themselves compressed, or is the distance between them reduced? I'm still not quite sure how VSIZ can affect the height of the picture displayed witout also affecting the apparent "aspect ratio", since the width is fixed. For example, if you display the AVIA Circle Hatch pattern and measure an equal diameter both horizontally and vertically, and then change the VSIZ variable haven't you changed the visible ratio of height to width?

    If this is the case, what is the proper sequence for adjusting overscan and aspect ratio using HSIZ, VSIZ and ASP to achive the best resolution and proper geometry? I used HSIZ and VSIZ to minimize overscan and then used ASP to get the circle geometry right. However, if I bump VSIZ by a few points, I can recorrect the geometry by bumping ASP in the opposite direction.

    Any further information would be greatly appreciated.
     

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