The video output format (NTSC or PAL) is depends on the Analog Camera used which type. If the Analog Camera is NTSC type, the IVS-H125/IVS-H125P will output the video as NTSC format, and vice versa.
Connect the powered Analog Camera to IVS-H120 first, then power on the IVS-H120 for determining NTSC or PAL format. After that, connect the video out cable to the monitor, so that the IVS-H120 will output the correct video format to TV monitor properly.