ADLINK PCI-7442 - Manual (Page 26)

14 Hardware Information
Pin Definition
Pin Definition
IDO_n Isolated digital output channel n
VDD1 common VDD junction for input channel 0-7
VDD2 common VDD junction for input channel 8-15
VDD3 common VDD junction for input channel 16-23
VDD4 common VDD junction for input channel 24-31
VDD5 common VDD junction for input channel 32-39
VDD6 common VDD junction for input channel 40-47
VDD7 common VDD junction for input channel 48-55
VDD8 common VDD junction for input channel 56-63
IGND Ground return path for isolated output channels
V5V Onboard un-regulated 5V power supply output
N/C No Connect