User Manual

Table Of Contents
Optical Master Unit
PRODUCT DESCRIPTION AND USER’S MANUAL
© Axell Wireless Ltd A1829300 rev H 68 (86)
Consider the noise situation
Another issue that needs to be taken into account is the noise figures. If several repeaters are connected to the
same base station the aggregated noise level in relation to the signal level will become too high – the sensitivity
of the base station is decreased. A way to deal with this problem is lower the output power from the base
station.
Note! If the output power is lowered the calculation above regarding input levels to the OMU needs to be
revised.
4.10 Initiate Fibre Loss Compensation
See section 3.3 Fibre Loss Compensation for information about this feature.
Start with the OMU Chose “Actions/Perform Optical Loss Adjustment” from the drop down menu.
Go through all racks
and all fibre optic
converters one by
one and initiate the
compensation
process
First chose the rack and then the fibre optic converter.
In an OMU that contains only one sub
rack – this rack is called “Rack 1”
Additional sub-racks/slave OMUs that
are linked to the master OMU are named
“Rack 2, 3 and 4”.
Each fiber optic converter is numbered
from left to right in each sub-rack.
For each rack/fibre optic converter please wait for the system to respond.
The system will respond with a description as below.