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Getting Started With The System
Powering Up the System
1 Power up the chassis.
2 Power up the host.
Typical PCI-PCI bridges are used to add PCI devices to a PCI hierarchy in which
all the bridges and devices are contained within a single chassis. Because of this,
BIOSes and operating systems make the assumption that all PCI devices in the
entire hierarchy will be available as soon as code execution begins at power-up
time. This assumption means that all of the expansion chassis must be turned on
before the host PC for the BIOS and OS to correctly configure a system.
Powering Down the System
Because operating systems and drivers commonly make the assumption that PCI
Express/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. As a result, the user must press and hold the power
button for 3 seconds in order to power down a linked-up M9005A. The order in
which expansion chassis are powered off, relative to each other, is not important.
Checking LEDs for Status
After powering on the M9005A chassis you should check the LEDs for status to
ensure that all connected systems have linked. The following table defines the
LED states.
Keysight M9005A PXIe Chassis User Guide
The M9005A chassis will assert a wake signal on power up.
The host PC also will power on if it supports this functionality.
If the M9005A experiences a fan or power supply failure, the
chassis will power down and remain in standby indefinitely until
AC power has been cycled. This failure could cause the upstream
system to crash or hang.
Installation and Configuration
23
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