[turnovertherecord]

I have a tv satelite digital box cisco 8642HD(rogers in canada)on the back of the box there is optical,coaxial and analog out,which one should I use,,,also what to connect to on a BP-26P,which input?

[srb]

If you have a BP26-P (with phono module), there is no internal Digital to Analog converter and your only choice would be to use the analog outputs out of the satellite box into any of the single ended (RCA) line-level inputs on the BP26-P (just not into the low-level phono inputs).
 
If what you have is actually a BP26-DA (with DAC module), I would connect the coaxial digital output of the satellite box into one of the two digital coaxial inputs on the BP26-DA.  There are no optical inputs on the DAC module so you could not use the optical output of the satellite box.  You could use the analog outputs as in the BP26-P above, but it is likely that the internal DAC in the BP26-DA would be better sounding than the internal DAC in the satellite box.
 
Steve

[turnovertherecord]

what about the cd player dac cambridge 840c