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Keysight M9521A AXIe System Module Startup Guide
19
Step 5: Set Up the Host PC
Power on the Chassis First then the Host Controller
The chassis and host PC must be powered up and down in the following
sequence. The chassis should be powered up first, which will initiate its built-in
self test. During self test, the chassis STATUS LED will be amber. The STATUS
LED will blink green and then stay green continuously when the ASM is ready.
The ASM then powers up each module slot. The remote host PC should be
turned on only after all installed modules have performed their
initialization—see your module documentation for initialization information. An
embedded controller such as the M9536A handles this sequence automatically.
External Host Controller
(high = turned on
by user)
Chassis power
(high = powered up)
Chassis
Status LED
c
Chassis powering up
30
4
ASM
Status LED
6 - 35
Status LED flashes
amber If POST fails
20 - 75
Modules activated
by the Shelf
Manager
Status LED flashes
amber If POST fails
When the chassis Status LED ceases flashing
green, you can turn on your PCIe-connected
controller. You can also view the chassis web
interface or bring up the chassis SFP.
ASM power
(high = ASM powered
up by Shelf Manager)
Chassis, ASM, and External Host Controller
Power-up/Power-down Sequence
1. Times are shown in seconds.
2. The times can vary based on the number of modules installed in
the chassis and their activation/de-activation times.
User presses
power button
IMPORTANT:
Make sure you turn
off the external host controller
before you press the power
button to power down the chassis
Chassis awaits modules reporting
they have deactivated, then
chassis powers down.
ASM powering up
Turn off the external host controller
before powering-down the chassis.
Performing self-test will turn off
amber flashing caused by a POST
failure.
ASM
de-activated
Powers up
chassis
Starts
power-down
sequence
Performing self-test will turn off
amber flashing caused by a POST
failure.
OOS light off
Instrument modules
(high = powered up)
OOS lights off
Chassis POST happens here.
ASM POST happens here.
ASM
activated
See the user guide of your
instrument modules for a
description of their status LEDs.
You can view
the ASM web
interface or
bring up the
ASM SFP here.
Chassis ready
ASM ready
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