Cabling And Checks

Nokia Flexi EDGE Base Station Installation Video Cabling and checks

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Nokia Flexi EDGE Base Station Installation Video Cabling and checks

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Nokia Flexi EDGE Base Station Installation Video Cabling and checks

Table of Contents:

1 2 3 4 5 6 7 8 9 10

General cabling issues .........................................................................................4 Internal bus cabling ..............................................................................................5 Internal power cabling ..........................................................................................6 RF cabling ............................................................................................................7 Antenna jumper cabling........................................................................................8 Transmission cabling............................................................................................9 Optional alarm cables.........................................................................................10 Installing the front covers ...................................................................................12 External cable tying ............................................................................................13 Checking the installation ................................................................................14

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Nokia Flexi EDGE Base Station Installation Video Cabling and checks

1

General cabling issues

Again, this installation video provides one typical sample of cabling. Other alternatives can be checked in the installation documents. Note that the exact types and order of cabling and connections may be different in the configuration at your site. However, the following instructions apply to all cable types. Take care not to bend the cables excessively. Maximum bending diameters can be found in the reference documents. Always keep rubber seals on all connection ports that are not used.

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Nokia Flexi EDGE Base Station Installation Video Cabling and checks

2

Internal bus cabling

The bus cables are connected between the System Module (ESMA) and each of the Dual TRX (EXxA) Modules. Exact connection ports vary according to the configuration. Check the correct ports from the ’Hardware Configuration Reference Guide’ document. Never loop bus cables back to the module where the cables originate, since this may cause unexpected false functioning. Pull back the connector seals and connect the cables between the System Module and the Dual TRX Modules’ bus connectors. Route the cables through the external side cable entry slots. Make sure that all the connector seals are properly in place. Tie loose cabling with cable clamps to the side of the casings.

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Nokia Flexi EDGE Base Station Installation Video Cabling and checks

3

Internal power cabling

The internal power cables are used to distribute power to the Dual TRX Modules. They connect the System Module (ESMA) to each of the Dual TRX Modules (EXxA) separately. Exact connection ports vary according to the configuration. Check the correct ports from the ’Hardware Configuration Reference Guide’ document. Pull back on the connector seals to uncover the connectors. Connect the cables to the System Module and one cable to each Dual TRX Module. Next connect the power cables between the Dual TRX and Dual Duplexer modules. Push all the connector seals firmly into place. Route the cables through the lower holes of the external cable entries.

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Nokia Flexi EDGE Base Station Installation Video Cabling and checks

4

RF cabling

As with all cables, pay special attention to connect the correct cables to their correct connectors. Connecting TX cables to RX connectors will cause damage to the modules. Remove the sealing caps from the RF connectors that you intend to use. These caps are sealed tight for weather protection. You may need to pull the caps off with pliers but do so carefully and only pull directly away from the base station to avoid damaging the connectors. The image and the codings on screen show the correct RF connections. Note that there are colour codings in the ports to help the identification. Connect the TxA and TxB cables to their respective counterparts. Connect RxA1 port to RxA, and RxB1 to RxB port. See that the pre-installed RXAORXAI cable is properly in place. Push the seals firmly over the connectors to prevent moisture from leaking in.

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Nokia Flexi EDGE Base Station Installation Video Cabling and checks

5

Antenna jumper cabling

Antenna cables connect to the antenna connectors in the front panels of the Dual Duplexer (ERxA) Modules. The number of cables used depends on the configuration. Cut through the cable entry rubber seals. Remove the seals from the antenna connectors in the Dual Duplexer Modules or Remote tune Combiner Modules. It is important to save the seals for later use during maintenance operations. Route the antenna jumper cables through the cuts and connect them to the modules. Tighten the connectors with a torque wrench set to 25 Nm. Repeat the steps above for all necessary modules in your configuration.

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Nokia Flexi EDGE Base Station Installation Video Cabling and checks

6

Transmission cabling

If you are installing the system outdoors you will need an IP 54 class protected transmission cable. This can be ordered from Nokia Siemens Networks. Use a knife to cut a passage for the transmission cables through the cable entries. Remove the seals from the transmission sub-module connectors and store the seals for later use. Pull back the connector seal on the transmission cable connector and connect the cable to the transmission sub-module. Push the connector cover boots firmly into place to ensure proper sealing. Route the transmission cables through the cable entries.

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Nokia Flexi EDGE Base Station Installation Video Cabling and checks

7

Optional alarm cables

If present in your configuration, the optional power module holds between one to four sub-modules that are all either AC/DC sub-modules (FPAA) or battery sub-modules (FPBA). The sub modules have RJ-45 ports in their front panels for chaining them together from left to right as shown on screen. Finally the rightmost sub-module is connected to the FPA port of the System Module after routing the cable through the cable entries. These connections form a chain of alarms that alert for maintenance needs such as cooling fan failures or overheating. In AC/DC submodules, alerts can also be caused by abnormalities in the AC input voltage. Another set of alarms is relayed by the optional External Alarms and Controls (EAC) cable. The end user can define these alarms during the commissioning process. Examples of these include smoke detection or a cabinet open door alarm. Note that when you connect the EAC cable in an outdoor wall or pole installation, the cables should be routed via the lower cable entry slot whenever possible. Remove the connector seal from the EAC connector in the System Module front panel and store the seal for later use. Connect the EAC cable to the connector and route the cable through the cable entry. Attach the other end of the cable to the external alarms control box as shown on screen. The cable can also be attached to an UltraSite/ExtraTalk alarm cable or an alarm distribution frame.

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Nokia Flexi EDGE Base Station Installation Video Cabling and checks

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Nokia Flexi EDGE Base Station Installation Video Cabling and checks

8

Installing the front covers

Before covering up the modules, do one more check to ensure that all seals and connector covers are tightly sealed. Place the plastic covers over the front ends of the modules. The covers provide protection for core modules. For safety reasons, both covers must be on during base station operation. The front covers protect people from coming into contact with live current, and the back covers protect the sensitive fans that are essential for cooling the station. Install the front covers and insert the knurled-head screws with your fingers. Tighten the screws with a Torx T25 screwdriver. Pay special attention not to tighten these screws excessively, since this may cause the cover to crack.

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Nokia Flexi EDGE Base Station Installation Video Cabling and checks

9

External cable tying

A complete Flexi EDGE BTS installation will have a variety of different cables emerging from the system. Loose cables are easily caught on moving objects and people, and should therefore be tied up in bundles and secured out of the way. Do not bend the cables sharply, and do not pull on them in such a way that you could cause connections inside to come loose. Bundle the cables together and fasten them with cable ties to fixed structures so that there is no danger of tripping over them. In areas of direct sunlight, cable ties will degrade rapidly due to ultraviolet radiation. In these cases it is better to use cable clamps instead.

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Nokia Flexi EDGE Base Station Installation Video Cabling and checks

10 Checking the installation Before leaving the site, confirm that you have checked all the boxes in the installation checklist. Clean up the site for the safety and comfort of the next visitors. Recycle all materials according to instructions. In the final section of this e-Learning course, you will find several helpful documents that provide additional information on the Flexi EDGE BTS product and installation and maintenance procedures.

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