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Recent content by sofiaaa

  1. S

    [moved] trigger signal for video line

    to reset counter what should be the state of Vout? - - - Updated - - - how i can find the beginning of the video frame using VOUT?
  2. S

    [moved] trigger signal for video line

    thank you :), when line 1 is being shown VOUT=0 or VOUT=1 ?
  3. S

    [moved] trigger signal for video line

    how i can use Vout to reset counter,in this example i didn't understand it?
  4. S

    [moved] trigger signal for video line

    ok that is clear, but for odd and even one has line number 1, 3,5 .... and one has 2,4,6....... how counter count them so? if i need line number 123 for example ?
  5. S

    [moved] trigger signal for video line

    sorry i means "for video like (720p) i use vertical synchro as reference(reset) and for (1080i) i use odd or even as reference?" i don't unterstand "gated with odd or even signal as the reference"
  6. S

    [moved] trigger signal for video line

    so for video like (720p) i use horizontal synchro as reference(reset) and for (1080i) i use odd or even as reference?
  7. S

    [moved] trigger signal for video line

    my video is interlaced (1080i),i should use output odd/even for counter?
  8. S

    [moved] trigger signal for video line

    very nice thank you :),i will try it,but i don't found LM1881 in isis proteus,where i can found a model for LM1881 for simulation?
  9. S

    [moved] trigger signal for video line

    thank you :),a pulse that a will send to my oscilloscope is it horizontal synchro ?
  10. S

    [moved] trigger signal for video line

    Hi, I'm having a project which need to send trigger signal to oscilloscope. i should make a circuit that will allow me to trigger oscilloscope on specific lines in a video signal. Please give me some idea so i can go ahead. thanks in advance

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