HikRobot CA Series User Manual page 54

Line 2 Configured as Input
With the condition of 100 Ω and 5 VDC, the logic level and electrical feature of configuring Line 2
as output are shown below.
Parameter Name
Input Logic Level Low
Input Logic Level High
Input Rising Time
Input Falling Time
 Make sure the input voltage is not from 0.5 VDC to 1.5 VDC as the electric status between
these two values are not stable.
 The breakdown voltage is 30 VDC, and keep voltage stable.
 To prevent damage to the GPIO pin, please connect GND first and then input voltage in Line 2.
Line 2 Configured as Output
When the environment temperature is 25 °C (77 °F), the relation among external voltage,
resistance and the output level low is shown below.
CA/CE-Series GigE Area Scan Camera·User Manual
Figure 9-6 Input Logic Level
Table 9-4 Electrical Feature of Line 2 Input
Table 9-5 Parameter of Output Logic Level Low
External Voltage
3.3 V
Parameter Symbol
VL
VH
TR
TF
External Resistance
1 KΩ
44
Value
0 VDC to 0.5 VDC
1.5 VDC to 30 VDC
0.66 μs
0.05 μs
VL (GPIO2)
160 mV