ADLINK USB-7250 - Manual (Page 31)

Introduction 21
USB-7230/7250
Table 1-2: USB-7230 I/O Signal Description
COM -------- Common ground or common
power of isolated digital input
channel
CNT<0,1> CGND I Frequency/event counter
channel
CGND -------- Ground of Frequency/event
counter
DO<0..15> IGND O Isolated digital output
channel
IGND -------- Ground return path for
isolated output channel
VDD IGND I Common power input
junction for isolated output
channel
Pin Function Pin Function
20 NO7 40 GND1
19 COM7 39 CNT1
18 NO6 38 GND0
17 COM6 37 CNT0
16 NO5 36 DI7L
15 COM5 35 DI7H
14 NO4 34 DI6L
13 COM4 33 DI6H
12 NC3 32 DI5L
11 NO3 31 DI5H
10 COM3 30 DI4L
9 NC2 29 DI4H
8 NO2 28 DI3L
7 COM2 27 DI3H
6 NC1 26 DI2L
5 NO1 25 DI2H
Signal Name Reference Direction Description