Verify The Hub's Operation - HP AdvanceStack 10Base-T Hub-12 Installation And Reference Manual

Installing the HP AdvanceStack 10Base-T Hubs

2. Verify the Hub's Operation

1. Plug the power cord into the hub's power cord receptacle and
into an ac power source.
power receptacle
on the back of the
Hub-24.
C a u t i o n
If your installation requires a different power cord than the one
supplied with the hub, be sure to use a power cord displaying the
mark of the safety agency that defines the regulations for power
cords in your country. The mark is your assurance that the power
cord can be used safely with the hub.
N o t e
The hub does not have a power switch; it is powered on when the power
cord is plugged in. The hub's power supply automatically adjusts to any
ac power source between 90 and 240 volts. You do not have to set the
voltage range.
2. Check the LEDs on the hub's front panel.
When the hub is powered on, it performs a self-diagnostic test during
which time all the LEDs are lit.
•
•
At the end of the self-test, a correctly operating hub keeps the Power
LED on, the Fault LED will be off, and, if an SNMP Module is
installed, the Exp Slot LED will stay lit. If an RPS is connected, the
RPS LED stays on.
3. Unplug the hub.
1-4
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For a hub without an optional SNMP Module installed, the self-
test takes approximately 3 seconds.
For a hub with an SNMP Module, the self-test takes up to 60
seconds. While the SNMP Module is being tested, the Activity,
Collision, and RPS LEDs are not lit (or flickering if there is net-
work traffic on the hub) and the Exp Slot LED flashes slowly.