Nortel Networks 411-2021-111 manual Power and Grounding Requirements

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Power and Grounding Requirements 5-3

Table 5-1

Metrocell DC Power performance requirements

Description		Requirements

	Maximum		Nominal		Minimum

Module or unit level operating voltage range	29.00 Vdc		27.00 Vdc		21.00 Vdc

Metro RF Frame current draw per feed (A or B) with all PAs	75 Adc
transmitting at full RF output power

Metro RF Frame power distribution voltage drop (from the	0.65 Vdc
feed input at the RIP to any module)

Metro RF Frame power distribution resistance (from the	40
feed input at the RIP to any module)	MOhms

Metro RF Frame operating voltage range (measured at the	29.00 Vdc		27.00 Vdc		21.60 Vdc
RIP power feed input)

Metro RF Frame minimum voltage to guarantee maximum					26.20 Vdc
PA RF power is available (measured at the RIP power feed
input)

Power Plant normal operating "Float" voltage range	27.60 Vdc		27.25 Vdc		27.00 Vdc

Power Plant "Equalize" voltage (one to two days)	29.00 Vdc

Power Plant voltage drop	0.25 Vdc

Maximum power feed length (measured from Metro RF
Frame RIP to Power Plant breaker
#2/0 AWG or Welding Copper Wire	60 feet
#1/0 AWG or Welding Copper Wire	47 feet

Absolute maximum voltage (no damage, non-operational,	30.50 Vdc
applied continuously)

Transient voltage immunity (Metro RF Frame modules) for	40 Vdc
300 ∝s

Noise from battery (system and module immunity)
into 600 Ohms	56 dBmC
from 10 kHz to 20 MHz in 3 kHz BW into 50 Ohms	100 mV
	(rms)
from dc to 100 MHz into Hi-Z	250 mV
	(p-p)

Noise to battery (system and module emissions)
from 300 Hz to 10 kHz (where Ip is the steady state	9+10logIp
dc current draw)	dBmC
from 10 kHz to 1 MHz	Ip**0.5 mV
	(rms)
Broadband noise	250 mV
	(p-p)

Battery step (system and module immunity) within nominal	±3 Vdc
operating range with 1 V/ms maximum rate of change)


DMS-MTX DualMode Metrocell Cell Site Description

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Contents DualMode Metrocell Page Page June Publication historyContents Appendices Power and Grounding RequirementsCell Site Components Datafilling a Metro Cell SiteList 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 Duplexer CellDBm DBWLoss FilterForward path IsolationReturn loss ModulationOmni DqpskSectorization 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 Frames TRUs ATCs Receive cablingComponent requirement No.Stsr 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 Sector W Stsr cell site connectionControl Channel Locate Channel Receiver Sector Sector U22Cell 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