User manual

PCI-1762 User Manual 18
3.1 Overview
Maintaining signal connections is one of the most important factors in ensuring that
your application system is sending and receiving data correctly. A good signal con-
nection can avoid unnecessary and costly damage to your PC and other hardware
devices. This chapter provides useful information about how to connect input and
output signals to the PCI-1762 via the I/O connector.
3.2 Isolated Digital Input Connections
The PCI-1762 has 16 isolated digital input channels designated IDI0~IDI15.
Each of isolated digital input channel accepts 10~50 V
DC
voltage inputs, and accept
bi-directional input. It means that you can apply positive or negative voltage to an iso-
lated input pin (V
in
). The figure below shows how to connect an external input source
to one of the card’s isolated input channels.
Figure 3.1 Isolated Digital Input Connections