I am working with EVAL-AD2S1210EDZ board. It was working properly . I could get and use just A, B and I signals on J4 pins. But now LOT and DOS pins are on. A and B signals are got from J4 pins with properly. But NM (I) signals always +5V and NM led is on. While I was working, NM output pin accidently short circuit with +15 V. Is this situation fault detection. so how can I use this board.