National Instruments MXI VXI-PCI8026 Getting Started page 42

Chapter 3 VXI-MXI-2 Configuration and Installation
Note The settings of any switches shown with this pattern (
configuration described in any of the following figures.
VXI/VME-PCI8026 for Linux
You can use an additional switch, S5, to control the polarity of the external
CLK SMB signal when S3 is configured to drive it. S5 is unused—its
setting does not matter—when S3 is configured to receive the external CLK
SMB signal.
Figure 3-6 shows four configuration settings for the VXI-MXI-2.
Figure 3-6a shows the default configuration, which is for driving the
inverted external CLK SMB. Use the settings of Figure 3-6b to drive the
noninverted external CLK SMB signal. Figure 3-6c illustrates the setting
for receiving the external CLK SMB signal. Finally, you can configure the
switches as shown in Figure 3-6d to receive the external CLK SMB signal
with a 50 Ω termination.
3-10
) have no bearing on the
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