Knowledge Note KN1050
CPJexd/CPJexr
Using Rearview Camera

You can use a typical USB cam as a rearview camera with CPJexr/CPJexd.
Any USB camera or video capture device can be a rearview camera.

Rearview camera works by the reversing light.
Connect the reversing light wire to the channel C of CPJexr/CPJexd.
Connect USB camera to the Car PC.
You can also use a NTSC/PAL camera with encoder.

Set the Resistor Range and Button Position of Channel C.
C1 button is for the turning off state of reversing light.
C2 button is for the turning on state of reversing light.

Check the option, “Channel C for rearview camera”.

When you shift the gear lever to the reversing position, the reversing light is turned on and the reversing view pops up.

You can see the camera and view option by right-clicking of the mouse.

https://www.exinterface.com/d/an/1050/KN1050-(CPJexd.exr)Using_Rearview_camera.pdf