Spdif > aes

[nonsub]

Originally Posted by Bfpca

Hi Folks

The only reason I can think of is that the voltage input will be higher using the 1:1.21 transformer. With .5v in you would have .605v out of the transformer. This may become an issue with sources that have low levels, I'm not sure. The input Z is set by the resistor and I believe the recievers are usually differential so I am not sure what the intent is. I notice that it seems to be common to use the 1.21 transformer so it may be more ideal with the input stage of the reciever , not sure. I am using spdif coax in through a DEQ 2496 and no problems. One other thing is that the DCX / DEQ have AES inputs and may be optimised to work with AES signal levels/ impedances. It would be interesting to look at the waveforms going into the receiver to see what it looks like.

Cheers
Brian

Hi Brian. I would think that the extra .105v isn't going to do squat as it doesn't even approach AES voltage spec? Since it works then the receiver must be able to take low level signals. Indeed from what I can make out the datasheet says -.3v to .8v for low in (I'm a newbie though and maybe not even reading the right thing, also if this is the case I don't even understand how it could be a negative v!) So at the end of the day there seems to be no point in the xfrmr?