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Keysight M9018A PXIe 18-Slot Chassis Startup Guide
STEP 3: Turn On and Verify Operation of the Chassis System
Power sequencing of the chassis
Power sequencing of the chassis
This section describes the power sequencing required for a remote controller PC
and the chassis. Also, the two methods of powering up the chassis are described.
Power sequence requirements
When powering up the system, the chassis should be powered up first. After
powering up the chassis, you should wait at least three seconds before turning
on the PC. The chassis front panel temperature LED, which is on for three
seconds after the chassis is powered up, provides a convenient way to measure
this delay, as shown below.
Figure 4
Wait three seconds after powering up the chassis before turning on
the PC
The PC should be shut down before the chassis is powered down. This will
prevent the chassis, as it’s being powered down, from disrupting operation of the
PC.
In brief, the PC should be off whenever the chassis is powered up or down.
Because chassis modules are not hot-swappable, chassis modules should only
be added or removed when the chassis is powered down.
The above power sequence doesn’t apply to an embedded controller installed in
the chassis because the embedded controller and chassis are powered together.
Chassis power
(High = powered up)
( g
p
p)
Chassis front panel
temperature LED
The temperature LED, which is on for the first three seconds after
the chassis is powered up, can be used as an indicator of when to
turn on the PC when the LED turns off, the PC can be turned on.
Remote Controller PC
(High = turned on)
The chassis must be
powered up before the
PC is turned on to
ensure that the PC
BIOS will enumerate
It is recommended that the PC be shut
down before the chassis is powered
down because many PCs dont have the
capability to safely remove (eject) PCIe-
connected devices. Therefore, powering-
BIOS will enumerate
the chassis slots as
the PC boots.
connected devices. Therefore, powering
down the chassis first can disrupt
operation of the PC.