1. Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
    Dismiss Notice

Show Image on TV and Color PAL with AD725

Discussion in 'AVR' started by Majid soltani, May 6, 2015.

  1. Tony Stewart

    Tony Stewart Well-Known Member Most Helpful Member

    Joined:
    Aug 31, 2012
    Messages:
    3,151
    Likes:
    281
    Location:
    Richmond Hill , ON Canada near Toronto
    THat sounds a bit careless about calibration.

    RGB in maximum input level should be 714 mV p-p. WHat is yours?
    What is input noise level during HBI?
    4x frequency error?
    etc etc.
     
    • Like Like x 1
  2. Majid soltani

    Majid soltani New Member

    Joined:
    May 6, 2015
    Messages:
    22
    Likes:
    0
    Tony Stewart thanks for your replay.

    yeah.... maximum input level is 700 mv - p-p
    i must check frequency error :cool:

    i have one question.... what is HBI ?
     
  3. Nigel Goodwin

    Nigel Goodwin Super Moderator Most Helpful Member

    Joined:
    Nov 17, 2003
    Messages:
    39,234
    Likes:
    641
    Location:
    Derbyshire, UK
    I would guess 'Horizontal Blanking Interval'?, presumably an American term? - I've never seen the abbreviation before.
     
    • Like Like x 1
  4. dave

    Dave New Member

    Joined:
    Jan 12, 1997
    Messages:
    -
    Likes:
    0


     
  5. Majid soltani

    Majid soltani New Member

    Joined:
    May 6, 2015
    Messages:
    22
    Likes:
    0

    Exactly correct ... thank you so much ... my problem solve with your help


    [​IMG]

    all friend thank you for reply to my questions...:)
     
  6. Tony Stewart

    Tony Stewart Well-Known Member Most Helpful Member

    Joined:
    Aug 31, 2012
    Messages:
    3,151
    Likes:
    281
    Location:
    Richmond Hill , ON Canada near Toronto
    In the PAL television standard, the blanking level corresponds to the black level, whilst other standards, most notably NTSC, set the black level slightly above the blanking level on a 'pedestal'.

    There is both a Horizontal and Vertical Blanking Interval.
     
    • Agree Agree x 1
  7. Majid soltani

    Majid soltani New Member

    Joined:
    May 6, 2015
    Messages:
    22
    Likes:
    0
  8. Tony Stewart

    Tony Stewart Well-Known Member Most Helpful Member

    Joined:
    Aug 31, 2012
    Messages:
    3,151
    Likes:
    281
    Location:
    Richmond Hill , ON Canada near Toronto
    no need to thank me, just send clear pictures.
    Did you know Dr. Caro Lucas? He was related to me.
     
  9. Majid soltani

    Majid soltani New Member

    Joined:
    May 6, 2015
    Messages:
    22
    Likes:
    0
    OK. sure..... yes i know him ...what is your meaning! that he was related to you?!
     
    Last edited: May 13, 2015

Share This Page