bring back the static

Discussion in 'The Projects Forum' started by mrdlg2u, Mar 24, 2011.

  1. mrdlg2u

    Thread Starter New Member

    Mar 24, 2011
    2
    0
    I am trying to make the "blue screen" go away when you loose signal on a video monitor. I want to see the video, even if it has static.

    I have looked at several different ways to keep a signal using an "on screen display", and even something as simple as a synk stripper LM1881. but I need to put a good synk in not out...

    Ideas?

    Later,
    Gundy
     
  2. nsaspook

    AAC Fanatic!

    Aug 27, 2009
    2,907
    2,167
  3. Ron H

    AAC Fanatic!

    Apr 14, 2005
    7,050
    657
    If the genlock loses lock, any (noisy) video that is displayed will be rolling.
     
  4. mrdlg2u

    Thread Starter New Member

    Mar 24, 2011
    2
    0
    I'm I looking at this correctly?? maybe the sync puls is not what I need...
    I just need to keep the video monitor thinking it lost the signal...

    I guess I need more info on why the monitor goes to blue screen...
    What is it looking for?

    Later,
    Gundy
     
  5. nsaspook

    AAC Fanatic!

    Aug 27, 2009
    2,907
    2,167
    Yes it will, but if you are working with a weak signal it helps to tweak your system in to make it lock. Just using a CRT monitor with H/V sync controls instead of a LCD would have the same effect as a genlock.

    slightly OT:
    When I was a kid in Texas we would DX tv stations from hundreds of miles away when the conditions were right with just a simple Yagi antenna on side of the house. I started to read books about how it worked and this started my interest in radio.

    Some guys go all the way with the hobby. http://www.oldtvguides.com/DXPhotos/
     
Loading...