DC Power Requirements, Mechanical | Nortel Networks 411-2021-111

	DualMode Metrocell Cell Site Specifications 7-3
DC Power Requirements
Grounding	As specified in Northern Telecom’s
	NTP-297-1001-156
Voltage	Nominal +27.0 Vdc ±0.5 Vdc
	Range +21.0 Vdc to 29.0 Vdc
Ripple	400 millivolts
Spurious 0.005 - 10 MHz	< -55 dBm @ 0.3 to 3.4 kHz
Noise	< 32 dBrnC (600 ohms bridged)
Voltage stability	±1% of pre-set voltage @ 0-100% load
Voltage response	< 600 ms for a step of 10-70% load
Voltage over/under shoot	< 20% of pre-set voltage for a step of
	10-70% load
Power Distribution Requirements
Channel/Frames	Current Breakers
Mechanical
Rack dimension	Height 84" (213.4 cm)
	Width 22" (56 cm)
	Depth 24" (61 cm), including cables and
	excluding unit handles
Clearance and Access	Ceiling 8 feet (7.5 feet. after cable tray
	installation
	Front aisle 3 feet
	Rear aisle 2 feet
	Building access door are required to be a
	minimum of 30 inches wide
Weight CE frame	400 lb. @ 80 lb./sq. ft.
RF Frame	950 lb. @ 115 lb./sq. ft.

DMS-MTX DualMode Metrocell Cell Site Description

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Nortel Networks 411-2021-111 manual DC Power Requirements, Power Distribution Requirements, Mechanical

Contents

DualMode Metrocell Page Page June Publication history Contents Cell Site Components Power and Grounding RequirementsDatafilling a Metro Cell Site Appendices List of tables Block diagram of a 120 Stsr Metrocell using one RF FramePage Intended audience for this publication About this document Applicability of this publication How this publication is organized Carrier RF List of termsBand DBm CellDBW Duplexer Forward path FilterIsolation Loss Omni ModulationDqpsk Return loss Sectorization Signal RFSector Stsr Northern Telecoms DualMode Metrocell Introduction Digital ready cellular product System architecture of a DualMode Metrocell Metro RF Frame Basic components of a DualMode Metrocell Universal CE Frame Channel 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 configuration 120 N=7 sectorized frequency reuse plan 60 N=4 sectorized frequency reuse plan Cell Site Layouts Omni cell site configuration RF Frame Control Channel redundancy Cell Site Layouts 4Cell Site Layouts TRU/DPA Transmit cabling 6Cell Site Layouts Component requirement Receive cablingNo. Frames TRUs ATCs Stsr cell site configuration CE Frame RF Frame Block diagram of a 120 Stsr Metrocell using one RF Frame Block 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 Y Sector Y TX/RX, 3 RX Control Channel Locate Channel Receiver Sector Stsr cell site connectionSector U Sector W 22Cell 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 Components NTAX98AA FRU Customer Service Operations 4Cell Site Components Standard 01.01 June Safety requirements Power and Grounding Requirements Power and grounding requirements Power and Grounding Requirements 4Power and Grounding Requirements Power distribution for the CE and RF Frames in a Metrocell Frame power distribution Grounding UL/CSA approval System power protection CEC par DC coupled signals Cable Identification 10Power and Grounding Requirements Standard 01.01 June Datafill Overview Datafilling a Metro Cell Site Table Acualm Table Clli Cavities Fan Pwr Alarm PointsMetro RF Frame ATC Hsmo +27V a Port # Rip Connector J206Table VCHINV, CCHINV, Lcrinv Example of Metro TRU datafill Frequency Assignment Example Icrm Example of Metro ICRM/TRU hardwire configuration 8Datafilling a Metro Cell Site Standard 01.01 June Radio Frequency Appendix a DualMode Metrocell Cell Site SpecificationsSystem Configuration Audio Interface Alarms Mechanical DC Power RequirementsPower Distribution Requirements Environmental Packaging Telecom 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 a 10Frequency Plans Standard 01.01 June Page Cell Site Description