ds-7604ni-k1 / 4p & sv3c

Hi All Ive just purchased a new Hikvision DS-7604NI-K1 / 4P NVR along with 2 x Hikvision 5mp cameras which all seem to work/connect with no problems but I also have 2 x SV3C 2mp cameras which after days of trying I cannot get the NVR to connect with them. I've tried numerous setting via the...