ADLINK USB-7250 - Manual (Page 6)

vi Table of Contents
3 Operations ......................................................................... 27
3.1 Isolated Digital Input .......................................................... 28
3.2 Change of State (COS) Detection...................................... 29
3.3 Optical Isolated Frequency/Event Counter ........................ 31
3.4 Digital Filtering ................................................................... 33
3.5 Isolated Digital Output (USB-7230 only) ............................ 34
3.6 Relay Output (USB-7250 only) .......................................... 35
Important Safety Instructions............................................... 37
Getting Service ...................................................................... 39