I bought my father a generic hybrid DVR/NVR that is set for(4) 4mp ip and (4) 4mp analog (TVI/AHD/CVI). he has to AHD camera, one is a newer IMX291 AHD camera, that seems to be working great with the system, the other an older analog. He has two IP camera, one being a 2mp Dahua PTZ the other a...