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3.6 RS-232 / RS-485 / J1708 Connector RS-232 / RS-485 / J1708 Connector Pin Signal 1 RS-232 RTS9 3 RS-232 TXD9 RS-232 Ground 5 RS-485 D+ 7 J1708 D+ 9 3.7 Pin 2 4 6 8 Signal RS-232 RXD9 RS-232 CTS9 RS-485 DJ1708 D- CAN / Video-In Connector CAN / Video-In Connector Pin Signal 1 CAN_H 3 CAN_SHIELD Video In 2 5 Video In 1 7 Pin 2 4 6 8 Signal CAN_L CAN_SHIELD Video Ground Video Ground