DVS Turntables setup on DDJ 1000

Hi, 

I have ddj 1000 and i can't connect DVS disk to it. I've set-up my channel 4 in Phono, i plugged the rca cables  but i can't configure the dvs from the rekordbox software. My Plan is "CORE" and the version of rekordbox is 6.8.1 .

Please help me with the configuration of the dVS