dvd-rom digital output to CAL dac

[TBKK]

I have an CAL dac and i have try the TTL to Coax converter
and have try to lock the CAL dac but no succes.
I have an normal cd playetr with digital output and it works with the DAC
do you please have any suggestion

Thanks
TBKK

 

[TBKK]

Is there nobody that can help me out..