Trigger signals are independent timing and control signals that can be sent between hardware along trigger cables. The trigger interface shows which of the trigger cable standards the camera uses.
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Figure 1: SMA interface in the Dhyana 95V2 sCMOS camera
SMA (short for SubMiniature version A) is a standard triggering interface based on a low-profile coaxial cable, very commonly used in imaging hardware. Read more about SMA connectors here [link: https://en.wikipedia.org/wiki/SMA_connector ].
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Figure 2: Hirose interface in the FL 20BW CMOS camera
Hirose is a multi-pin interface, providing multiple input or output signals via one single connection to the camera.
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Figure 3: CC1 interface in the Dhyana 4040 sCMOS camera
CC1 is a specialized hardware triggering interface located on the PCI-E CameraLink card used by some cameras with CameraLink data interfaces.