Good info, thanks. You might clarify parameters B and C. Did you force the #1 radalt to -4 by disconnecting the test box, or was it there the whole time?
Regardless, your test confirmed what I posted on the Turkish thread: you are better off pulling the CB than staring at erroneous data. The airplane is equipped to handle failures better than errors. In that thread I was also amazed there would be supposed professional pilots who are afraid to pull clearly labeled circuit breakers in flight.
GB