Interface Description; Usb Port; I/0 Port - Dahua 3000 Series User Manual

2.2

Interface Description

The back of the device has two interfaces, the network interface and 6pin power as well as I/O interface,
as shown below:

2.2.1 USB Port

USB port supports USB2.0 and USB3.0，which can be used in camera control, data transmission and power
supply.
To ensure the transmission quality, please use certified cables to prevent too much data retransmission and packet
loss.

2.2.2 I/0 Port

Pin
1
2
3
4
5
6
Figure 2-3 Interface Description
Sheet 2-1 Pin Signal Definition
Signal Description
GPIO（ Non-isolated software can configure input and
Line3
output）
Line1 Opto-coupler isolation input
GPIO（ Non-isolated software can configure input and
Line2
output）
Line0 Opto-coupler isolation output
Opto-coupler isolation signal ground（ISO_GND）
ISO_GND
GND GPIO signal ground（GND）
1
19
Interface Description