Please check LED condition on camera(LED of cable connecting connector is light on Green or blinking green).
Some CoaXPress frame grabber board need to change firmware to change operation mode (1lane or 4lane).
Please check applicable firmware of CoaXPress frame garabber board with software tool provide by frame grabber manufacture.
STC-CMx401CXP cameras are CXP-6 1lane camera (one DIN connector on camera).
The camera cannot change to CXP-6 4lane configuration.