Daheng Imaging MERCURY GigE Series, Руководство пользователя, Страница: 126 / 190

7.Electrical Interface
© 2023 China Daheng Group, Inc. Beijing Image Vision Technology Branch 116
Diagram Pin Definition Core Color Description
1 Line0+ green Opto-isolated input +
2 GND blue PWR GND & GPIO GND
3 Line0- grey Opto-isolated input -
4 POWER_IN purple
Camera external power
(+12V DC)
5 Line2 orange GPIO input/output
6 Line3 pink GPIO input/output
7 Line1- white green Opto-isolated output -
8 Line1+ white blue Opto-isolated
Table 7-2 I/O port definition (back sight of camera)
The input power of MER-G-P/MER-G series digital camera must be +12V (±10%) when powered by I/O
port.
The polarity of power cannot be reversed, otherwise, camera or other peripherals could burn out.
7.3.1. Line0 (Opto-isolated Input) Circuit
Hardware schematics of opto-isolated input circuit is shown as Figure 7-1.
8
5
1
4
3
7
2
6
3.3V
Line0+
Line0-
INPUT0
External
Circuit
5V-24V
Camera internal circuit
Figure 7-1 Opto-isolated input circuit

Logic 0 input voltage: 0V~+2.5V (Line0+ voltage)

Logic 1 input voltage: +5V~+24V (Line0+ voltage)

Minimum input current: 7mA

The status is unstable when input voltage is between 2.5V and 5V, which should be avoided