Daheng Imaging MERCURY USB3, Руководство пользователя

Страница: 101 / 169

7.Electrical Interface
© China Daheng Group, Inc. Beijing Image Vision Technology Branch 93
 Rising edge delay: <50μs (0°C~45°C), parameter description as shown in Figure 7-2
 Falling edge delay: <50μs (0°C~45°C), parameter description as shown in Figure 7-2

Different environment temperature and input voltage have influence on delay time of opto-isolated input
circuit. Delay times in typical application environment (temperature is 25°C) is as shown in
Table 7-4
Parameter Test condition Value (us)
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
LINE0+
INPUT0
Figure 7-2 Parameter of opto-isolated input circuit

Rising time delay (TRIGIN_R_DELAY): the time required for the response to the decrease to 0.8V of
INPUT0 from 50% rising of LINE0+

Falling time delay (TRIGIN_F_DELAY): the time required for the response to the rise to 2V of INPUT0
from 50% falling of LINE0+
7.3.2. Line1 (Opto-isolated Output) Circuit
Hardware schematics of opto-isolated output circuit is shown as Figure 7-3.