ICP DAS USA I-7083 User Manual page 6

The internal counting logic is expected as active high. User can
use XOR control bit to select the proper waveform as follows:
Case 1: differential input, set XOR=1
Case 2: active high single-ended input, set XOR=0
Case3: active low single-ended input, set XOR=1
I-7083/7083D/7083B/7083BD User Manual (V 1.1, Dec/2007) ------------------ 6