Ravikiran,
I think what the manufacturer meant was to supply the reference clock which is in the order of 10 - 30 Mhz. Typically it can be provided by the DM365 clockout or any other xtal oscillator on the board (main board).
I am not aware of the dvsdk software base and your hardware platform, however if you can refer to the APPRO DM365 IPNCs they have similar implementation of supplying reference clock from the main board to the sensor board.
Regards
Rajat