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Appendix BThe Mini Din ConnectorThe mini-din connector provides control signal input and output, which including GPIO input, GPIO outputas Relay connection and one RS-485 port multiplex with COM port. It also provides connection of PTZdevice and external console to control the device.COM / GPIO MINI-DINPIN FUNCTION1 GPIN2 RXD (Receive Data)3 TXD (Transmit Data)4 RS-485A5 GND (System Ground)6 GPOUT- Relay NO7 GPOUT- Relay COM8 RS-485B9 Video OutGPIN: Input high when opening the connection; input low when sinking more than 10mA orshorting to pin 5 (GND).RXD (COM Port Receive Data)TXD (COM Port Transmit Data)RS485A/RS485B: To connect with external PTZ devices, please contact your dealer/distributorto get the information of the supported PTZ models.GND (System Ground): System Ground is also connected to chassis as frame ground.GPOUT-Relay NO/COM: When there is a triggered event, this can be a response that pin 6 isshort to pin 7 and enables an alarm device.Video Out: directly output the analog video signal.53
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