Keysight M9502A, User Manual

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14 Keysight M9502A/M9505A AXIe Chassis User Guide
Introduction Power-Up and Power-Down
In brief, the host PC must be off whenever the chassis is powered up or down.
Note the need to restart the host PC (after Windows starts) if the chassis
configuration has been changed in any way while the PC was turned off.
While the power sequencing shown above doesn’t apply to an embedded
controller (because an embedded controller and chassis are powered
simultaneously), an embedded controller must also be restarted (after Windows
starts) if the chassis configuration was changed in any way while the chassis and
embedded controller were turned off.
Chassis power
(High = powered on)
If the chassis is powered down (for exa If the chassis is powered down (for exa
or remove a module) without the PC be
down, and then the chassis is powered
PC must be restarted twice in order for
to be correctly discovered.
Host PC
(High = turned on)
Restart of PC
After Windows starts, the
PC must be restarted again
PC must be restarted again
to complete the chassis
discovery process.
Restart of PC
Some AXIe instrument modules (also known as Blades) take longer to be ready
for enumeration than the PXI link ready requirement of 100ms. Consequently, it is
possible for some controllers (such as the Keysight M9536A Embedded
Controller) to enumerate the chassis before all of the individual modules are
ready and therefore not enumerate them. If you have a situation where Keysight
Connection Expert and/or the Windows Device Manager consistently do not find
specific instrument modules when the chassis powers up, increase the module
initialization time. Refer to the Wait time setting in
“ESM PCIe Upstream
Connection Settings” on page 48.