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① : PIN 10 output “R” signal ;

② : PIN 11 output “B” signal ;

③ : PIN 12 output “G” signal ;

④ : PIN 4 output “HS” signal ;

⑤ : PIN 2 output “VS” signal ;

VGA master chip : 74LV07 and 6303

Description:

74LV07

PIN4

PIN2

RL50

RL51

VS(Interlacing signal)

HS(Line signal)

BAV99 :

If the PIN 3 of BAV99(Q9) is Low-level ( 0V ), Said system detects VGA

monitor;

If the PIN 3 of BAV99(Q9) is high-level (nearly 3.3V),said system doesn’t detect

VGA monitor;

 VGA module components：

6303

74LV07

75Ω(RG6)

75Ω(RG5)

75Ω(RG4)

BAV99(Q3)

BAV99(Q8)

BAV99(Q7)

②

①

③

④

⑤

HIKVISION DS7208HVI-ST/SE User Manual

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