Board input and output connectors 87
1  | 29  | 
2  | 30  | 
Video input connector on Matrox 
The video input connector on the 
Pin | Signal | I/O  | Description | 
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2  | VID_IN1  | I  | Analog Video Input #1 or Y1  | 
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4  | VID_IN2  | I  | Analog Video Input #2 or C1  | 
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6  | VID_IN3  | I  | Analog Video Input #3 or Y2  | 
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8  | VID_IN4  | I  | Analog Video Input #4 or C2  | 
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10  | VID_IN5  | I  | Analog Video Input#5 or C4  | 
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12  | VID_IN6  | I  | Analog Video Input #6 or Y3  | 
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14  | VID_IN7  | I  | Analog Video Input #7 or C3  | 
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15  | USER(2)_IN  | I  | Auxiliary User Input #2  | 
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16  | USER(1)_IN  | I  | Auxiliary User Input #1  | 
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17  | USER(2)_OUT  | O  | Auxiliary User Output #2  | 
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18  | USER(1)_OUT  | O  | Auxiliary User Output #1  | 
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20  | VID_IN8  | I  | Analog Video Input #8 or Y4  | 
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22  | VID_IN9  | I  | Analog Video Input #9 or Y5  | 
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23  | OPTOTRIG-  | I  | |
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24  | OPTOTRIG+  | I  | |
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26  | VID_IN10  | I  | Analog Video Input #10 or C5  | 
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28  | VID_IN11  | I  | Analog Video Input #11 or Y6  | 
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30  | VID_IN12  | I  | Analog Video Input #12 or C6  | 
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1, 3, 5, 7, 9,  | GND  | 
  | Ground  | 
11, 13, 19,  | 
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21, 25, 27,  | 
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29  | 
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