Set Up Your MXI-Express x1 System 14 ni.com
Powering Off the MXI-Express x1 System
Because operating systems and drivers commonly make the assumption
that PCI devices will be present in the system from power-up to
power-down, it is important not to power off the expansion chassis until
after the host PC is powered off. Powering off the expansion chassis while
the host is still on can cause crashes or hangs. However, once the host PC
is powered off, the order that the expansion chassis are powered off is not
important.
LED Indicators
The LEDs on MXI-Express x1 cards provide status information about
power supplies and link state. The NI PCI-8361, NI PXI-8364, and
NI PXIe-8364 all have one tri-color LED on the panel, indicating power
and link status. The NI PCIe-8362 has two tri-color LEDs on the panel,
indicating power and link status for each port. The NI PXI-8360 and
NI PXIe-8360 have two LEDs, one for power supply status and one for link
state.
Note In some cases where there is an invalid MXI-Express x1 connection, some boards
may report a valid link while others do not. It is important to observe a valid link status
across all connected MXI-Express x1 boards when the host is powered on to ensure a valid
configuration.
Table 5. LED Status Descriptions of MXI-Express x1 Products
Board LED Color Meaning
NI PCI-8361 (199392x-01L)
NI PCIe-8362 (190735x-01L)
NI PXI-8364 (199991x-02L)
NI PXIe-8364 (193970x-01L)
PWR/LINK Off Power is off
Blinking Red Power is out of spec
Solid Amber Power is within spec;
no link to chassis
Solid Green Power is within spec;
link established
NI PXI-8360 (191373x-01)
NI PXIe-8360 (194402x-01L)
PWR Off No power
Solid Red Power is out of spec
Solid Green Power is within spec
LINK Off Link not established
Solid Green Link established
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