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5.1.2
Installing TRX units
In order to reach and tighten the antenna connectors with a torque spanner, it is
necessary to install the TRX units in the following order: TRX 4, 3, 2, 1 (see
Figure 9). The master TRX is located in slot 1.
Note
If you are replacing a master TRX in a single TRX installation or increasing the
number of TRXs, refer to Nokia MetroSite EDGE Base Station: Maintenance for
more detailed information.
Installing TRX units
1.
2.
3.
4.
5.
6.
7.
8.
34 (50)
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Slide the unit into the appropriate slot. See Figure 11.
Press each replacement unit carefully into the backplane to engage it in the
connector. Do not use excessive force!
Fix and tighten the unit retaining screws to 1.5 Nm (1.11 lb ft) using a T10
Torx screwdriver.
Reconnect the diversity cables to form the planned diversity configuration.
Refer to Nokia MetroSite EDGE Base Station: Installation for more
information on diversity cabling.
Reconnect the antenna connectors according to the sectoring solution
planned. Use a torque spanner/wrench to tighten the SMA type connectors
to 1 Nm (0.74 lb ft).
If new TRX units have been added to replace formerly empty slots (fitted
with shield units), route the associated cables through the cable entry block
and secure them with cable ties. See Figure 13.
The cable entry block must be removed in order to open it and route new
cables through. Use a torque driver with a 4 mm Allen bit to remove and
replace the two cable entry block screws.
Run the TRX test from Nokia BTS Manager (optional).
With Nokia BTS Manager, right-click the BCF object in the Equipment
View window and carry out a BCF Object Reset, or, if locked from the
BSC/NMS, request an unlock from the BSC/NMS (the BCF reset is
automatic in this case).
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