Dahua 3000 Series, Руководство пользователя

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Interface Description
20
2.3
Electrical Specification
2.3.1 Power and USB Port Electrical Specifications
Sheet 2-2 Power and USB Port Electrical Specifications
Parameter Description
Power Specification +5.0V power supply via USB3.0 port
（
Conforms to USB3.0 interface specification
）
EMS Standard Electrostatic discharge
（
GBT17626.2/IEC61000-4-2
）
Metal cover contact 6kV
EMC Standard Class B
2.3.2 IO Port Electrical Specification
2.3.2.1 Opto-isolated Input
Sheet 2-3 Opto-isolated Input
Input Voltage Description
DC30V Limit voltage: input voltage should not exceed this limit, otherwise it will
cause damage to the device
DC0
～
24V I/O input safe operating voltage range
DC0
～
1.4V Indicates logical 0
DC>1.4V
～
2.2V Input state reverses and logic state is not certain
DC>2.2V Indicates logical 1
Isolated I/O input sink current is 5mA
～
15mA.
Figure 2-4 Opto-isolated Input Circuit
2.3.2.2 Opto-isolated Output
Sheet 2-4 Opto-isolated Output
Voltage Description Note
DC 0
～
30V
I/O output swing range, 30V is limit If the output of the camera is connected with