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I
NSTALLATION
To install the HLU, slide the line unit into the card guides for the desired slot, then
push the unit back until it seats firmly in the backplane card-edge connector.
P
OWER
When the HLU powers up, the four-character display illuminates and reports status
messages. If the HLU is not communicating with the next span device, the following
events occur:
1
Alarm and diagnostic messages are displayed (see the Front Panel Alarm
Messages and Front Panel Diagnostic Messages tables inside), followed by the
SELF TEST message.
2
The Status LED turns yellow, indicating it has entered self-test mode.
If the HLU is communicating with the next span device, the following occurs:
1
The Status LED flashes green while acquiring each device in the system, and
turns a steady green when the entire system is operating without any alarms.
2
The four-character display reports margin (signal-to-noise ratio) readings and
insertion loss.
3
If the status LED is not solid green, the display reports alarm conditions (see the
Front Panel Alarm Messages table inside).
P
ROVISIONING
1
Access the Maintenance Terminal screens by pressing the
times.
a
Set the date and time (select Set Clock from the Main Menu).
b
Set the circuit IDs (select View System Inventory).
2
Access the Systems Settings selection on the Main Menu to change the default
settings of any system parameters.
3
Access the View Troubleshooting screen to view a graphical analysis of any
potential system problems.
4
When the HLU has been successfully installed and provisioned, clear the Span
Status, Performance Data, Performance History, and Alarm History screens to
ensure accurate data and alarm reporting.
-
S
UP
EQUENCE
several
SPACEBAR
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