In practice, a line scan camera has to be externally synchronized in order to obtain distortion-free images, e.g. triggered by an encoder.
There are two different synchronization functions that can be applied together or individually:
1. Line synchronization: A TTL signal at the LINE SYNC input triggers each individual exposure of the sensor line by line.
2. Frame synchronization: The recording of a set of lines (frame) representing a two-dimensional image is triggered by a TTL signal at the FRAME SYNC input.