User manual

3 Chapter 1
Wide Output Range
The PCI-1752U/PCI-1752USO also features a wide output voltage range
from 5 to 40 V
DC
, suitable for most industrial applications with 12 V
DC
/
24 V
DC
output voltage. In the mean time, we are also ready to serve your
special needs for specific output voltage range. Do not hesitate to ask us
about tailoring our standard products to meet your specifications. All
these merits make PCI-1752U/PCI-1752USO the best choice for indus-
trial applications.
Board ID Setting
The PCI-1752U/PCI-1752USO has a built-in DIP switch that helps
define each card’s ID when multiple cards have been installed on the
same PC chassis. The board ID setting function is very useful when users
build their system with multiple PCI-1752U/PCI-1752USO cards. With
correct Board ID settings, you can easily identify and access each card
during hardware configuration and software programming.
Channel-Freeze Function
The PCI-1752U/PCI-1752USO provides Channel-Freeze function, which
can be enabled either in dry contact or wet contact mode (selectable by
the on-board jumper). When the Channel-Freeze function is enabled, the
last status of each digital output channel will be safely kept for emer-
gency use. Moreover, you can enable this function through software as it
is useful in software simulation and testing program.
Reset Protection
When the system has undergone a hot reset (i.e. without turning off the
system power), the PCI-1752U/PCI-1752USO can either retain outputs
values of each channel, or return to its default configuration as open sta-
tus, depending on its on-board jumper setting. This function protects the
system from wrong operations during unexpected system resets.