Daheng Imaging MERCURY GigE Series, User Manual, Page: 128 / 190

7.Electrical Interface
© 2023 China Daheng Group, Inc. Beijing Image Vision Technology Branch 118

Different environment temperature and input voltage have influence on delay time of opto-isolated input
circuit. Delay time in typical application environment (temperature is 25°C) is as shown in
Table 7-4
Parameter Test condition Value (μs)
Rising edge delay
VIN=5V 3.02 ~ 6.96
VIN=12V 2.46 ~ 5.14
Falling edge delay
VIN=5V 6.12 ~ 17.71
VIN=12V 8.93 ~ 19.73
Table 7-4 Delay time of opto-isolated input circuit in typical application environment
TRIGIN_F_DELAY TRIGIN_R_DELAY
2V
0.8V
INPUT0
LINE0+
Figure 7-4 Parameter of opto-isolated input circuit

Rising time delay (TRIGIN_R_DELAY): the response time from LINE0+ rises to 50% of amplitude to
INPUT0 decreases to 0.8V

Falling time delay (TRIGIN_F_DELAY): the response time from LINE0+ decreases to 50% of
amplitude to INPUT0 rises to 2V
7.3.2. Line1 (Opto-isolated Output) Circuit
Hardware schematics of opto-isolated output circuit is shown as Figure 7-5.
1
2
8
7
6
4
5
3
OUTPUT1
Rexternal
EXVCC
Line1+
Line1-
External Circuit
Camera internal circuit
Figure 7-5 Opto-isolated output circuit

Range of external voltage (EXVCC) is 5~24V

Maximum output current of Line1 is 25mA