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The mini-din connector provides control signal input and output, which including GPIO input, GPIO output
as Relay connection and one RS-485 port multiplex with COM port. It also provides connection of PTZ
device and external console to control the device.
GPIN: Input high when opening the connection; input low when sinking more than 10mA or
shorting 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/distributor
to 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 is
short to pin 7 and enables an alarm device.
Video Out: directly output the analog video signal.
The Mini Din Connector
COM / GPIO MINI-DIN
PIN
FUNCTION
1
GPIN
2
RXD (Receive Data)
3
TXD (Transmit Data)
4
RS-485A
5
GND (System Ground)
6
GPOUT- Relay NO
7
GPOUT- Relay COM
8
RS-485B
9
Video Out
53
Appendix B
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