User manual
5.7  DI / DO Connector 
Table: 5.7: DI / DO Connector 
Pin
Signal
Pin
Signal
1 
Isolated Dry Contact Input 1 
2 
Isolated Dry Contact Input 2 
3 
Isolated Dry Contact Input 3 
4 
Isolated Dry Contact Input 4 
5 
Isolation Ground 
6 
Isolated Relay Driver Output 1 
7 
Isolated Relay Driver Output 2 
8 
Isolated Relay Driver Output 3 
9 
Isolated Relay Driver Output 4 
5.8  CAN / Video-In Connector 
Table 5.8: CAN / Video-In Connector 
Pin
Signal
Pin
Signal
1 
CAN_H 
2 
CAN_L 
3 
CAN_SHIELD 
4 
CAN_SHIELD 
5 
Video In 2 
6 
Video Ground 
7 
Video In 1 
8 
Video Ground 
TREK-550 User Manual
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