HikRobot CoaXPress User Manual page 52

 NPN Device
If the VCC of NPN device is 24 VDC, and it is recommended to use 1 KΩ to 4.7 KΩ pull-up resistor.
If the VCC of NPN device is 12 VDC, and it is recommended to use 1 KΩ pull-up resistor.
 Switch
The switch value can provide low electrical level to trigger line 2.
CoaXPress Area Scan Camera
Camera Power
Supply
Bi-direction
I/O
Camera Power
Ground
Figure 9-14 Line 2 Connecting to PNP Device as Input
Camera Power
Supply
Bi-direction
I/O
Camera
Power Ground
Figure 9-15 Line 2 Connecting to NPN Device as Input
Camera
Power Supply
Figure 9-16 Line 2 Connecting to a Switch as Inpu
User Manual
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PWR VCC
Device Power
Ground
GND of PWR and
VCC
PWR VCC
Device Power
Ground
GND of PWR and VCC
PWR
Bi-direction
I/O
Camera Power
Ground
GND of PWR and VCC
43
Device Power
Supply
PNP Device
Signal Line
Device Power
Supply
Signal Line
> 3.3 V
0 V
NPN Device