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  1. #1
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    Default Intrebare pt cei ce se pricep la electronica

    Am nevoie de o parere din partea celor care se pricep la adaptarea semnalelor video provenind din diverse surse.Mai precis ma intereseaza care dintre urmatoarele 2 scheme de mai jos este mai indicata a se folosi pt realizarea unui adaptator s-video => scart


    S-video to scart varianta 1
    S-Video => SCART
    Ground (Y) 1 => 17 Composite Video Ground
    Ground (C) 2 => 17 Composite Video Ground
    Y - Intensity (Luminance) 3 => 20 Composite Video In / Luminance
    C - Color (Chrominance) 4 => 15 RGB Red In / Chrominance



    S-video to scart varianta 2
    S-Video => SCART
    Ground (Y) 1 => 17 Composite Video Ground
    Ground (C) 2 => 13 RGB Red Ground
    Y - Intensity (Luminance) 3 => 20 Composite Video In / Luminance
    C - Color (Chrominance) 4 => 15 RGB Red In / Chrominance




    cum este mai bine sa legi masa de crominanta si cea de luminanta impreuna la pinul 17 al mufei scart ca in prima schema sau luminanta la pinul 17 si crominanta la pinul 13 ca in schema 2 ?

  2. #2
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    Default

    Mai corecta este varianta a doua . Oricum o sa-ti functioneze amindoua la fel dar doar in cazul in care intrarea SCART din TV este configurata pentru Y/C.
    offset 1.2Fe ruginit pe alocuri. LNB Sharp 0.5 dB, 2XSS1 + VDR linux standalone( fara monitor etc) cu pozitioner SRT V50 / HSS 1160NA DigiTV / 2xDolce / DM500S

  3. #3
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    Default

    merci Paul

    ma gandeam si eu ca varianta a-ll-a e mai adegvata dat fiind faptul ca si adaptatoarele comerciale o folosesc , vezi schema



  4. #4
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    Default s-video

    Exista si narianta sa faci un adaptor de la s-video la video complex (rca). unesti luminantza si crominanta printr-un condensator de 68pF . succes!

  5. #5
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    Default Re: s-video

    Quote Originally Posted by maurice
    Exista si narianta sa faci un adaptor de la s-video la video complex (rca). unesti luminantza si crominanta printr-un condensator de 68pF . succes!
    vrei sa zici asa nu :

    Y-Ground >-----+
    +-----> RCA Composite Ground
    C-Ground >-----+

    Y >------------+
    +-----> RCA Composite Video
    C >-----||-----+
    470pF Ceramic

    Pin S-Video Description Pin RCA
    1 Ground (Y) Ground
    2 Ground (C) Ground
    3 Y - Intensity (Luminance) Signal
    4 C - Color (Chrominance) Signal through 470pF Ceramic Capacitor

    Notes:
    Larger capacitor values will also work, but cause picture to become "softer".
    The impedances and signal levels not matched exactly right, but near enough to work accetably.




    condensatorul cum zici ca e mai bine sa fie 470pF asa cum scrie in nota de mai sus sau de 630 pF cum arata in figura ?

 

 

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