National Instruments NI PCIe-836x 用户手册
Appendix B
Common Questions
© National Instruments Corporation
B-3
If the MXI-Express software is not installed, the PCI-to-PCI function will
still be detected and work correctly, but the MXI-Express configuration
device will be detected as an unknown device.
still be detected and work correctly, but the MXI-Express configuration
device will be detected as an unknown device.
MXI-3 and MXI-4 to MXI-Express Upgrade Questions
What are some of the improvements from MXI-3 and MXI-4 to
MXI-Express?
MXI-Express?
MXI-Express incorporates the latest technology to include:
•
Support for PCI Express slots.
•
Improved error correction and handling for noisy or harsh
environments.
environments.
•
Improved mechanical connectivity.
•
Improved performance.
•
Support for two chassis from a single card in the host PC.
•
Lower cost.
Can a MXI-3, MXI-4, and MXI-Express board be used together
directly?
directly?
No. MXI-3, MXI-4, and MXI-Express boards use different cable
connectors and cannot be connected together. Additionally, the
board-to-board communication protocols differ.
connectors and cannot be connected together. Additionally, the
board-to-board communication protocols differ.
Can I use a MXI-3, MXI-4, and MXI-Express kit in the same
multichassis PXI system?
multichassis PXI system?
Yes. Different MXI kits can be intermixed to connect multiple PXI chassis
together. As mentioned previously, an individual MXI-3 or MXI-4 board
will not cable directly to a MXI-Express board.
together. As mentioned previously, an individual MXI-3 or MXI-4 board
will not cable directly to a MXI-Express board.
MXI-3 and MXI-4 systems required the use of a specific boot ordering.
Is this a requirement with MXI-Express?
Is this a requirement with MXI-Express?
Yes. The requirements of the PCI bus still mandate that you must power on
secondary PXI chassis before powering on the host PC when using
MXI-Express.
secondary PXI chassis before powering on the host PC when using
MXI-Express.
With MXI-3 and several chassis connected in series (daisy chain
configuration), you were required to power on the chassis in order starting
with the chassis at the end of the chain and move towards the host
configuration), you were required to power on the chassis in order starting
with the chassis at the end of the chain and move towards the host