I was able to get thru to Panasonic tech support who had to forward me on to an Engineer, and they tell me that you have to have both the SDI and the seperate AES/EBU cards to get embedded audio on SDI out of a Panasonic Aj-d450. Unfortunately, they don’t make the AES/EBU card for my deck anymore.
So i’m out of luck for SDI video untill it’s possible for the Decklink to take seperate SDI video & analog audio.
Luckily i have enough spots on my patch panel to add component routing, but it’s a bit of a bummer.