Vivotek RX9401 User Manual page 26

VIVOTEK - Built with Reliability
This portal appears with a fisheye camera. The PiP and PTZ buttons will then
be disabled for a fisheye camera.
IMPORTANT:
Due to the limitation of system resources, the fisheye dewarp (1R & 1P) can
only take place on one view cell, for one fisheye camera.
26 - User's Manual