We were somewhere around Barstow, on the edge of the desert, when the
drugs began to take hold. I remember Chris Evans
saying something like:

Passive splitters never work *properly* with any baseband video signal as
they expect correct termination.
I'm using the correct active DA.

When you mentioned DA in the original posting I thought it might mean
Display Adaptor but now I'm very confused!

I thought Duck's Arse haircut, but that's not a Very Good Acronym.