Elastino

ADV7842 fails to detect NTSC properly

Discussion created by Elastino on Nov 8, 2010
Latest reply on Nov 11, 2010 by DaveD

Subject : ADV7842 failes to detect NTSC on CVBS with certain pattern.

 

Symptom : Confueses NTSC as SECAM with 1-px frame pattern.

 

Condition :

Without 1-px frame, it works properly.

With 1-px frame, it losts burst lock and detect as SECAM.

 

Workaround :

Disable SECAM from auto detection lists

 

Referene :

SMPTE 170M Composite Video Signal

 

Source appratus:

Shibasoku TG45AX

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