Display showing two images at half vertical scale / Interlaced Signal

​Dual Image An​omaly


In this VPX design, all sources are 1080P, except one cable box @ 1080i. Upon switching to the cable box from another 1080P source, the below issue was noted.

The solution was to to TURN OFF the Cable box's de-interlacing option to output 1080P to match the VPX decoders.