Connecting a MXI-Express Fiber Cable to the PCIe-8381

Updated Oct 29, 2018

Reported In

Hardware

  • PCIe-8381
  • PXIe-8381
  • MXI Cable
  • PXIe-8384

Driver

  • PXI Platform Services

Issue Details

I want to use a fibre-optic cable with my PCIe-8381. What do I need to do to set it up?

Solution

As mentioned in the Getting Started guide, the x8 MXI-Express fiber cable requires a Constant Frequency Clock (CFC) be provided to the cable. Gen II x8 PCI Express and PXI Express remote controllers use Spread Spectrum Clocking (SSC) by default.

You must change the setting using the toggle switch on your MXI-Express Gen II x8 remote
controller:

 Change the third switch for SW1 to ON refer to figure 1
 

Figure 1. NI PCIe-8381 set to CFC mode by toggling position 3 of SW1 to the ON position

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