The HCZ-6320 does not support changing video format via the function switch (compared to most Hanwha Analog HD (AHD)).
The HCZ-6320 is a Wisenet HD+ 2M zoom box camera that supports both AHD or CVBS formats but has a dedicated CVBS output (for installation).
The camera (out of the box) will come with a spare 2 pin to BNC cable. Use this for installations that does not meet AHD video spec.
Please click on this link to access the HCZ-6320 user manual