Nortel Networks 411-2021-111 manual Transmit cabling

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Cell Site Layouts 3-27

Transmit cabling

In the transmit path, the output of each Transmit Receive Unit (TRU) is connected to the input of each corresponding power amplifier (PA) on the Dual Power Amplifier (DPA) module.

For a 60° STSR cell site with two RF Frames, each TRU/DPA Shelf and its associated ATC and duplexer serve for one of the six sectors as listed below:

•Sector X RF Frame 1—TRU/DPA Shelf 1, A TC 1 and Duplexer 1

•Sector Y RF Frame 1—TRU/DPA Shelf 2, A TC 2 and Duplexer 2

•Sector Z RF Frame 1—TRU/DPA Shelf 3, A TC 3 and Duplexer 3

•Sector U RF Frame 2—TRU/DPA Shelf 1, A TC 1 and Duplexer 1

•Sector V RF Frame 2—TRU/DPA Shelf 2, A TC 2 and Duplexer 2

•Sector W RF Frame 2—TRU/DPA Shelf 3, A TC 3 and Duplexer 3

The output of each power amplifier (PA) is input to an 8-channel AutoTune Combiner (ATC). The output of each 8-channel ATC is connected to the Transmit (TX) port of each corresponding duplexer. Table 3-12 lists the connection between the PAs and the ATC for a 60° STSR cell site using two RF Frame for six sectors.

For a 60° STSR cell site with four RF Frames, the assignment of the equipment for each sector is as listed below:

•Sector X RF Frame 1 —TRU/DPA Shelf 1, A TC 1

TRU/DPA Shelf 2, ATC 2 and Duplexer 2

•Sector Y RF Frame 2 —TRU/DPA Shelf 1, A TC 1

TRU/DPA Shelf 2, ATC 2 and Duplexer 2

•Sector Z RF Frame 1 —TRU/DPA Shelf 3, A TC 3

RF Frame 2 —TRU/DPA Shelf 3, A TC 3 and Duplexer 3

•Sector U RF Frame 3 —TRU/DPA Shelf 1, A TC 1

TRU/DPA Shelf 2, ATC 2 and Duplexer 2

•Sector V RF Frame 4 —TRU/DPA Shelf 1, A TC 1

TRU/DPA Shelf 2, ATC 2 and Duplexer 2

•Sector W RF Frame 3 —TRU/DPA Shelf 3, A TC 3 and Duplexer 3 RF Frame 4 —TRU/DPA Shelf 3, A TC 3

By adding one more RF Frame to this configuration, three of the six sectors can be expanded to provide up to 24 channels (including the CCH and LCR). With this additional RF Frame, the equipment and cabling may need to be reassigned and rearranged. Table 3-12 lists the connection between the PAs and the ATC for a 60° STSR configuration with two RF Frames and Table 3- 13 lists the connection between the PAs and the ATC for a 60° STSR configuration with four RF Frames.

DMS-MTX DualMode Metrocell Cell Site Description

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Contents

DualMode Metrocell Page Page June Publication historyContents Cell Site Components Power and Grounding RequirementsDatafilling a Metro Cell Site AppendicesList of tables Block diagram of a 120 Stsr Metrocell using one RF FramePage Intended audience for this publication About this documentApplicability of this publication How this publication is organizedCarrier RF List of termsBand DBm CellDBW DuplexerForward path FilterIsolation LossOmni ModulationDqpsk Return lossSectorization Signal RFSector Stsr Northern Telecoms DualMode Metrocell IntroductionDigital ready cellular product System architecture of a DualMode MetrocellMetro RF Frame Basic components of a DualMode Metrocell Universal CE FrameChannel assignment Band a 416 channels Band B 416 channels 800 MHz cellular bandChannel assignment for 800 MHz cellular systems Introduction 6Introduction Standard 01.01 June Overview Cell Site ConfigurationsOmni configuration Omni N=7 frequency reuse plan Sectorized configuration120 N=7 sectorized frequency reuse plan 60 N=4 sectorized frequency reuse plan Cell Site Layouts Omni cell site configurationRF Frame Control Channel redundancyCell Site Layouts 4Cell Site Layouts TRU/DPA Transmit cabling6Cell Site Layouts Component requirement Receive cablingNo. Frames TRUs ATCsStsr cell site configuration CE Frame RF Frame Block diagram of a 120 Stsr Metrocell using one RF FrameBlock diagram of a 120 Stsr Metrocell using three RF Frames 12Cell Site Layouts DPA 9 Port1 CCH ATC3 Port DPA 10 Port1 14Cell Site Layouts TRU/DPA ATC 16Cell Site Layouts Sector Sector Z Sector YSector Y TX/RX, 3 RX Control Channel Locate Channel Receiver Sector Stsr cell site connectionSector U Sector W22Cell Site Layouts Block diagram of a 60 Stsr Metrocell with two RF Frames 24Cell Site Layouts Block diagram of a 60 Stsr Metrocell with four RF Frames 26Cell Site Layouts Transmit cabling 28Cell Site Layouts TRU/DPA 30Cell Site Layouts Port2 ATC3 Port DPA Port1 RF Frame 32Cell Site Layouts Receive cabling 34Cell Site Layouts Sector Y 36Cell Site Layouts Component requirement 38Cell Site Layouts Standard 01.01 June Major components of a DualMode Metrocell Description Cell Site ComponentsNTAX98AA FRU Customer Service Operations 4Cell Site Components Standard 01.01 June Safety requirements Power and Grounding RequirementsPower and grounding requirements Power and Grounding Requirements 4Power and Grounding Requirements Power distribution for the CE and RF Frames in a Metrocell Frame power distributionGrounding UL/CSA approval System power protectionCEC par DC coupled signals Cable Identification 10Power and Grounding Requirements Standard 01.01 June Datafill Overview Datafilling a Metro Cell SiteTable Acualm Table ClliCavities Fan Pwr Alarm PointsMetro RF Frame ATC Hsmo +27V a Port # Rip Connector J206Table VCHINV, CCHINV, Lcrinv Example of Metro TRU datafill Frequency Assignment ExampleIcrm Example of Metro ICRM/TRU hardwire configuration8Datafilling a Metro Cell Site Standard 01.01 June Radio Frequency Appendix a DualMode Metrocell Cell Site SpecificationsSystem Configuration Audio Interface AlarmsMechanical DC Power RequirementsPower Distribution Requirements Environmental PackagingTelecom Compliance Regulatory Electromagnetic EmissionsRadiated Emissions Product Safety =7 Frequency plan Band a Appendix B Frequency Plans=7 Frequency plan Band B =4 Frequency plan Band B =4 Frequency plan Band a10Frequency Plans Standard 01.01 June Page Cell Site Description