ADLINK PCIe-7200 - Manual (Page 30)

Installation 21
2.8 Onboard Pull-ups and Terminations on the Digi-
tal Inputs
The PCI-7200, cPCI-7200 and PCIe-7200 have 32 digital input
channels. Onboard terminations for digital input circuits may be
needed for some applications. Schottky terminations can minimize
undershoot/overshoot disturbances caused by reflection noise on
high-speed bus lines. Table 2.1 lists the pull-ups and termination
status of PCI-7200, cPCI-7200, and PCIe-7200. Figure 2.8 is the
illustration of the pull-up resistor and terminations on-board.
Table 2-1: 7200 Series Termination
Figure 2-8: Digital Input Pull-up Resistor and Termination Circuit Diagram
Pull-up resistor Terminations
PCI-7200 /
PCIe-7200
None None
cPCI-7200 None Schottky diode clamped to ground & power