HARRIS KRC121109 1 User Manual

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Page 1

RBS 884 Macro with MCPA, 1900 MHz

PRELIMINARY User Guide (NOT FOR OPERATION)

PFCON

TRX TRX TRX TRX TRX TRX TRX TRX TRX TRX TRX TRX TRX TRX

POWER

ERROR

POWER

TATUSS

STATUS

TATUSS

TATUSS ERROR FAN

CID

24V

Tx Out Tx Out Tx Out

TRX 1 TRX 2 TRX 3 TRX 4 TRX 5 TRX 6 TRX 7 TRX 8

PFCON 1

TCB

TRX 1

TRX 3

TRX 5

TRX 7

TRX 2

TRX 4

TRX 6

TRX 8

4 5

6 7

8 9

Pos 1 2 3

DC/DC

PFCON

TRX TRX TRX TRX TRX TRX TRX TRX TRX TRX TRX TRX TRX TRX

POWER

ERROR

POWER

TATUSS

STATUS

TATUSS

TATUSS ERROR FAN

CID

24V

Tx Out Tx Out Tx Out

TRX 1 TRX 2 TRX 3 TRX 4 TRX 5 TRX 6 TRX 7 TRX 8

PFCON 1

TCB

TRX 1

TRX 7

TRX 5

TRX 3

TRX 2

TRX 6

TRX 4

8 9

6 7

4 5

Pos 1 2 3

PFCON

DCON

TRX

PSP16TRX

DCON

POWER

ERROR

POWER

STATUS

TATUSS

TATUS

STATUS TATUS

TATUSS

ERROR

CLINK

FAN

MCB1

MCB3

CID

MCB2

MCB4

24V

CLINK

ON OFF

MCA4

MCA2

MCA3

24V

SYNCout

Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out

MCA1

SYNCin

DCON 1

DCON 2 PFCON 2

PSP

TRX 9

TRX 11

TRX 13

TRX 15

ON OFF

TRX 10

TRX 12

TRX 14

TRX 16

10 11

12 13

14 15

16 17 18 19

20 21

DC/DC

ON OFF

PFCON

DCON

TRX

PSP16TRX

DCON

POWER

ERROR

POWER

STATUS

TATUSS

TATUS

TATUSS

TATUS

STATUS TATUS

TATUSS

ERROR

CLINK

FAN

MCB1

ON OFF

MCB3

CID

MCB2

MCB4

24V

CLINK

MCA4

MCA2

MCA3

24V

SYNCout

Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out

MCA1

ON OFF

SYNCin

DCON 2 PFCON 2

DCON 1

PSP

TRX 15

TRX 13

TRX 11

TRX 9

TRX 16

TRX 14

TRX 12

TRX 10

TRX 8

16 17 18 19

20 21

14 15

12 13

10 11

ON OFF

1234 AMPLIFIER

PFCON

TRX TRX TRX TRX TRX TRX TRX TRX TRX TRX TRX TRX TRX TRX

POWER

ERROR

POWER

TATUSS

STATUS

TATUSS

TATUSS ERROR FAN

CID

24V

Tx Out Tx Out Tx Out

TRX 1 TRX 2 TRX 3 TRX 4 TRX 5 TRX 6 TRX 7 TRX 8

PFCON 1

TCB

TRX 1

TRX 3

TRX 5

TRX 7

TRX 2

TRX 4

TRX 6

TRX 8

4 5

6 7

8 9

Pos 1 2 3

DC/DC

PFCON

TRX TRX TRX TRX TRX TRX TRX TRX TRX TRX TRX TRX TRX TRX

POWER

ERROR

POWER

TATUSS

STATUS

TATUSS

TATUSS ERROR FAN

CID

24V

Tx Out Tx Out Tx Out

TRX 1 TRX 2 TRX 3 TRX 4 TRX 5 TRX 6 TRX 7 TRX 8

PFCON 1

TCB

TRX 1

TRX 7

TRX 5

TRX 3

TRX 2

TRX 6

TRX 4

8 9

6 7

4 5

Pos 1 2 3

PFCON

TRX TRX TRX TRX TRX TRX TRX TRX TRX TRX TRX TRX TRX TRX

POWER

ERROR

POWER

TATUSS

STATUS

TATUSS

TATUSS ERROR FAN

CID

24V

Tx Out Tx Out Tx Out

TRX 1 TRX 2 TRX 3 TRX 4 TRX 5 TRX 6 TRX 7 TRX 8

PFCON 1

TRX 1

TRX 3

TRX 5

TRX 7

TRX 9

TRX 2

TRX 4

TRX 6

TRX 8

4 5

6 7

8 9

10 11

DC/DC

PFCON

TRX TRX TRX TRX TRX TRX TRX TRX TRX TRX TRX TRX TRX TRX

POWER

ERROR

POWER

TATUSS

STATUS

TATUSS

TATUSS ERROR FAN

CID

24V

Tx Out Tx Out Tx Out

TRX 1 TRX 2 TRX 3 TRX 4 TRX 5 TRX 6 TRX 7 TRX 8

PFCON 1

TRX 9

TRX 1

TRX 7

TRX 5

TRX 3

TRX 2

TRX 8

TRX 6

TRX 4

10 11

8 9

6 7

4 5

PFCON

DCON

TRX

PSP16TRX

DCON

POWER

ERROR

POWER

STATUS S TATUS

TATUS

STATUS TATUS

TATUSS

ERROR

CLINK

FAN

MCB1

MCB3

CID

MCB2

MCB4

24V

CLINK

MCA4

MCA2

MCA3

24V

SYNCout

Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out

MCA1

SYNCin

DCON 1

DCON 2 PFCON 2

PSP

TRX 11

TRX 13

TRX 15

TRX 10

TRX 12

TRX 14

TRX 16

12 13

14 15

16 17 18 19

20 21

DC/DC

PFCON

DCON

TRX

PSP16TRX

DCON

POWER

ERROR

POWER

STATUS S TATUS

TATUS

STATUS TATUS

TATUSS

ERROR

CLINK

FAN

MCB1

ON OFF

MCB3

CID

MCB2

MCB4

24V

CLINK

MCA4

MCA2

MCA3

24V

SYNCout

Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out

MCA1

ON OFF

SYNCin

DCON 2 PFCON 2

DCON 1

PSP

TRX 15

TRX 13

TRX 11

TRX 16

TRX 14

TRX 12

TRX 10

16 17 18 19

20 21

14 15

12 13

1234

ON OFF

AMPLIFIER

1234 AMPLIFIER

ON OFF

DCON

TRX

PSP16TRX

DCON

POWER

ERROR

POWER

STATUS

TATUSS

TATUS

STATUS TATUS

TATUSS

ERROR

CLINK

FAN

MCB1

MCB3

CID

MCB2

MCB4

24V

CLINK

MCA4

MCA2

MCA3

24V

SYNCout

Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out

MCA1

SYNCin

DCON 1

DCON 2 PFCON 2

TCB

PSP

TRX 9

TRX 11

TRX 13

TRX 15

TRX 10

TRX 12

TRX 14

TRX 16

10 11

12 13

14 15

16 17 18 19

20 21

Pos 1 2 3

DC/DC

PFCON

DCON

TRX

PSP16TRX

DCON

POWER

ERROR

POWER

STATUS

TATUSS

TATUS

TATUSS

TATUS

STATUS TATUS

TATUSS

ERROR

CLINK

FAN

MCB1

MCB3

CID

MCB2

MCB4

24V

CLINK

MCA4

MCA2

MCA3

24V

SYNCout

Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out

MCA1

SYNCin

DCON 2 PFCON 2

DCON 1

TCB

PSP

TRX 15

TRX 13

TRX 11

TRX 9

TRX 16

TRX 14

TRX 12

TRX 10

TRX 8

16 17 18 19

20 21

14 15

12 13

10 11

Pos 1 2 3

1234 AMPLIFIER

ON OFF

1234 AMPLIFIER

ON OFF

1234 AMPLIFIER

ON OFF

1234 AMPLIFIER

ON OFF

1234 AMPLIFIER

ON OFF

1234 AMPLIFIER

ON OFF

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The contents of this document are subject to revision without notice due to continued progress in methodology, design, and manufacturing.

Ericsson shall have no liability for any error or damages of any kind resulting from the use of this document.

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Table of Contents

Part1 Introduction ...................... 1-1

1 ReasonforReissue ............... 1-3

2 AboutthisUserGuide .............. 1-3

3 HowtoUseTheUserGuide ........... 1-4

Part2 GeneralProductInformation .............. 2-1

1 Introduction ................... 2-3

2 Features .................... 2-3

3 ProductLines .................. 2-4

Part3 SystemDescription ................... 3-1

1 Introduction ................... 3-3

2 SystemArchitecture ............... 3-4

3 RBSOverview .................. 3-8

4 EquipmentConfiguration ............. 3-19

5 EquipmentDescription .............. 3-21

6 TechnicalSpecifications ............. 3-36

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Contents

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List of Figures

Figure Title Page

Figure 2-1 Product Line s in the R BS 884 Series . . . . . . . . 2-4

Figure 3-1 1900 MHz Sub-Band Spectrum . . . . . . . . . . 3-4

Figure 3-2 General Overview of RBS 884 Configuration . . . . 3-5

Figure 3-3 General Overview of RBS 884 Configuration . . . . 3-6

Figure 3-4 Block Diagra m of a Radio Base Station . . . . . . . 3-7

Figure3-5 MacrowithMCPA,1900MHz ........... 3-9

Figure 3-6 CRI and TCB Functional Block Diagram . . . . . . 3-10

Figure 3-7 HCC and ANPC FunctionalBlock Diagram . . . . 3-11

Figure 3-8 Macro with MCPA, 1900 MHz Receive Path . . . . 3-12

Figure 3-9 Macro with MCPA, 1900 MHz Transmit Path . . . . 3-13

Figure 3-10 Macro with MCPA, 1900 MHz Synchronization . . . 3-15

Figure 3-11 3x15 CRI-PCM (T1)Configuration . . . . . . . . 3-17

Figure 3-12 3x24 CRI-PCM (T1)Configuration . . . . . . . . 3-18

Figure 3-13 3x31 CRI-PCM (T1)Configuration . . . . . . . . 3-19

Figure 3-14 Typical Macro with MCPA, 1900 MHz Configuration . 3-20 Figure 3-15 Macro with MCPA, 1900 MHz Equipment (Omni-site) 3-23

Figure3-16 CRIBoardLayout ............... 3-24

Figure 3-17 Macro with MCPA, 1900 MHz TCB . . . . . . . . 3-27

Figure 3-18 Macro with MCPA, 1900 MHz ANPC . . . . . . . 3-29

Figure3-19 HybridCombinerUnit ............. 3-30

Figure3-20 TXBPandMCU ............... 3-31

Figure 3-21 MCPA Rack and Amplifier Modules . . . . . . . 3-32

Figure 3-22 RBS Power Distribution Cabinet . . . . . . . . . 3-34

Figure 3-23 MCPA Power Distribution Cabinet . . . . . . . . 3-35

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Contents

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List of Tables

Table Title Page

Table 3-1 POWD Circuit BreakerAssignments . . . . . . . 3-33

Table 3-2 POWD Circuit BreakerAssignments . . . . . . . 3-34

Table 3-3 Macro with MCPA, 1900 MHz Technical Specifications

Table 3-4 Macro with MCPA, 1900 MHz Technical Specifications

....................... 3-36

....................... 3-38

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Contents

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Part 1

Introduction

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Introduction

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This section describes the information c onta ine d in the manual and the conventions used in its presentation.

1 Reason for Reissue

This is the first issue of this user guide.

2 A bout this User Guide

The target audience for the user guide is Radio Base Station (RBS) site installation, site testing, and site maintenance personnel.

This manual contains the information required to install, troubleshoot, and maintain the RBS 884 Macro with MCPA, 1900 MHz hardware.

Introduction

2.1 User Guide Contents

It is assumed that before the user guide is used to pe rform any activities at a radio base station s ite, telephone transmission facilities, alternating current (AC) electrical line power, and groun ding have been made available. Ensure the antenna system is installed.

When the radio base sta tion equipment has been installed using the information i n this manual, it will be left powered up ready for integr ation into the network by personnel at the Mobile Services Switching Center (MSC).

This user guide is divided into the following parts:

• Introduction – a description of the contents of the manual and how the manual can be used.

• General Product Information – a description of the various systems, platforms, and enclosures w it hin the RBS 884 family of Radio Base Stations.

• System Description – a description of the hardware and functions of the RBS 884 Macro with MCPA, 1900 MH z equipment.

• Installation – procedures for the installation of the RBS equipment on the site.

• Administration – procedure s for

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Introduction

• Integration and Verification– procedures for

• Operations and Maintenance– procedures for

• Troubleshooting – provides LED indications.

• Hardware Replacement – procedures for basic troubleshooting and replacement of equipment suspected to be faulty.

• Glossary of Terms – definitions of key terms used in the ma nual.

• Acronyms and Abbreviations – expanded versions of all of the acronyms and abbreviations used in the manual.

• Appendix A, RF Guidelines.

• Appendix B, Documentation Overview.

• Appendix C, User Feedback.

• Appendix D, Conversion Table

Many of the procedures in the user guide require site-specific data from the Site Inst allation Documentation relating to the particular radio base station site where the installation i s to take place. This docum entation should be available at the site.

The procedures in the user guide for installation and maintenance are normally intended to be performed sequentially, in the order p resented.

3 How to Use The User Guide

This user’s guide contains information required to install, test, operate, and troubleshoot the RBS 884 Macro with MCPA, 1900 MHz system. Prior to beginning a specific task or operation, do the following:

• Read the related Part or Appendix.

• Verify that all required materials and tools are available.

• Observe all dangers, warnings, and cautions for the task or operation.

The following document conventions apply to this user’s guide: admonishments and typefaces. The admonishments alert the user to hazardous or damaging actions. The typefaces emphasize text to enhance the use of this user guide.

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Introduction

• Admonishm e nts – Danger indicates that death or critical injury to the person

or persons performing a task can result if procedures are not followed correctly.

– Warning indicates that equipment can be seriously damaged,

resulting in equipment or system failure or service interruption, if procedures are not followed correctly.

– Caution ind icates potential damage to the equipment, system, or

data if procedures are not followed correctly.

• Typefaces Typeface indicates software menu selections that must be typed

(entered) by the user. – Bold typeface emphasizes headings, admonishments,

trademarks, and examples of command names.

– Italics typeface indicates a reference to additional in formatio n

provided in another section or document.

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Introduction

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Part 2

General Product Information

1 Introduction .................. 2-3

2 Features .................... 2-3

3 ProductLines .................. 2-4

3.1 RBS884Macro ............. 2-5

3.2 RBS884Micro .............. 2-6

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General Product Information

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1 Introd uction

The General Product Information provides general information on unconfigured radio base stations. Refer to the RBS 884 Site Engineering Manual for descriptions of the available working ba se station configurations and for information on RBS interfaces (for instance, power, transmission, and antennas).

2 Features

The RBS 884 Series is a series of products in the CMS 8800 f ami ly. The products in the RBS 884 Series are f ully featured modular RBSs for both the analog AMPS EIA 553 and the digital D-AMPS EIA I S 136 systems (Advanced M obile Phone System Electronics Industry Association 553 system and Digital American M obile Phone System Electronics Industry Association Interim Standard 136 system).

General Product Information

A base station in the RBS 884 Series can s upport one, two, or three cells. A cell is a defined area covered by one antenna system, and each cell has one control channel for digital or one for analog, or both. There is one cell at an omni site, and one to three cells at a sectorized site.

The RBS 884 Series utilizes multi-mode, multi-functional transceivers (TRXs). The same hardware TRX module can be used for analog and digital voice, contr ol and monitoring purposes.

The hot repair capability allows replacement of defective units when power is still applied.

The RBS 884 Series is designed for remote control monitoring allowing control and fine tuning of all functions and parameters, such as power output, frequencies, and switching of redundant units from the M SC.

A Radio Frequency Test Loop (RFTL) is an optional feature that enables precise output power settings, Voltage Standing Wave Ratio (VSWR) alarm, and Receive Signal Strength Indicator (RSSI) test measurements.

The device software is stored in non-volatile memory within the RBS, and the control part software is downloaded f rom the MSC, which ensures a short time to service at power-up.

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General Product Information

3 Product Lines

RBS 884 Macro with MCPA, 850 MHz

RBS 884 Micro (1900 MHz)

RBS 884 Outdoor

RBS 884

RBS 884 Macro with MCPA, 1900 MHz

Figure 2-1. Product Lines in the RBS 8 84 Series

1234 AMPLIFIER

ON OFF

1234 AMPLIFIER

ON OFF

1234 AMPLIFIER

ON OFF

1234 AMPLIFIER

ON OFF

1234 AMPLIFIER

ON OFF

1234 AMPLIFIER

ON OFF

RBS 884 Micro 800

RBS 884 High Capacity Self-Contained Cell Site

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The RBS 884 Series includes product lines for macro and micro cells. See Figure 2-1 on page 2-4.

Note: The maximum number of carriers for each sector stated is the

3.1 RBS 884 Macro

The macro cell products are intended for normal indoor installations and are built on-site with a number of cabinets of uniform size and design.

The RBS 884 Macro 850 MHz supports TDMA. This s ystem operates at 824–894 MHz and provides up to 78 low power or medium power

transceivers (3x24 carriers), or up to 96 high power and 6 low power transceivers (3x32 carriers).

General Product Information

technical limitation for the defined standard configurations. The practical usable sector sizes may be limited by the frequency plan. The capacity of all product lines, wit h the exception of the RBS 884 Micro (1900 MHz) is calculated for analog systems. The capacity of the RBS 884 Micro (1900 MHz) is calculated for digital systems. See the integration information in the RBS 884 Operations and Maintenance Manual for system limitations in digital systems.

The RBS 884 Macro 1900 MHz supports TDMA and operates at 1850–1990 MHz (A-, B-, or C-band). It provides up to 48 medium po wer transceivers (3x15 carriers).

A special configuration, High-Capacity Self Contained Cell Site (HC-SCCS), providing up to 31 transceivers in three sectors (3x31 carriers), can be installed in an outdoor container.

The RBS 884 Macro DBC (Down Banded Cellular) supports TDMA and is applicable to frequencies at 806–860 MHz. Up to 39 medium power transceivers (3x12 carriers) can be used in one installation.

The RBS 884 Macro PACS (4-High) is an RBS 884 Macro Pre-Assembled Cell Site ( PACS) that supports 1900 MHz and 850 MH z TDMA using single-sector (omni-site) modules. Multi-sector systems can be configured using two or three omni-site modules. Each module consists of two racks with f our cabinets in each rack. The Macro PACS (4-High) system is available in 1900 MHz medium power, 1900 MHz QUAD, 850 MHz medium power, and 850 MHz high power.

The RBS 884 Macro with MCPA is an RBS 884 Macro Pre-Assembled Cell Site ( PACS) that supports 1900 MHz and 850 MH z TDMA using single-sector (omni-site) modules. The system uses a hybrid combiner and multi-carrier power amplifiers. Multi-sector systems can be configured using two or three omni-site RBS modules.

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General Product Information

3.2 RBS 884 Micro

The RBS 884 Micro products are used wherever local capacity or coverage is required.

The RBS 884 Micro 850 MHz is intended for indoor installation, and typical applications include convention centers, office buildings, parking areas and tunnels. The RBS 884 Micro comprises one small main cabinet and two possible expansion cabinets of the same size. It is a completely functional cell, with a drop and inse rt transmission interface and RF equipment built-in. Up to 10 1.5W transceivers can be used in one cabinet (8 carriers). Up to 30 tr ansceivers can be provided with two auxiliary cabinets (24 c arriers). This gives a total capab ility of up to 23 analog or 68 digital voice channels (71 with E1 PCM links).

The RBS 884 Micro with Multi Carrier Power Amplifier ( MCPA) (850

MHz) supports TDMA and operates at 824–894 MHz. It is a standard RBS 884 Micro (850 MH z) equipped with a MCPA for higher output power in one cell. The MC PA is a separate cabinet mounted below the RBS 8 84 Micro (850 MHz) cabinet. Up to three RBS 884 Micro (850 MHz) cabinets and one MCPA can be mounted in a 19-inch rack cabinet. An RBS 884 Micro with MCPA (850 MHz) can provide up to 23 analog or 68 digital voice channels (71withE1PCMlinks)inonecell.

The RBS 884 M icro Outdoor (85 0 MHz) supports TDMA and operates at 824–894 MHz. Designed for outdoor use, it is contained in an all-weather steel enclosure with an environmentally-controlled interior and can be installed in a wide variety of locations and climatic zones. The RBS 884 Micro (850 MHz) can be provided with up to 26 transceivers and a total of 24 carriers. T his provides a total capacity of up to 23 analog or 68 digital voice channels (71 with E1 PCM links).

The RBS 884 Micro (1900 MHz) supports TDMA and operates at 1850–1910 MHz. The RBS 884 Micro (1900 MHz) is a self-contained base station intended primarily for outdoor use. The cabinet is cooled directly with outdoor air, using a combination of variable speed blowers and a variable power heater to maintain the cabinet air temperature within equipment operating limits. Typical applications include hot spot areas within mature 1900 MHz networks and areas not covered by the RBS 884 Macro. The RBS 884 Micro (1900 MHz) is comprised of one small main cabinet and up to two auxiliary primary cabinets of the same size. The cabinets can be easily mounted on poles, on the sides of buildings, on rooftops, or on concrete pads. The RBS 884 Micro (1900 MHz) is a complete functional cell, with a drop and insert transmission interface and built -in RF equipment. Up to 5 transceivers can be used in one cabinet providing 4 carriers. Up to 15 transceivers can be used in a three-cabinet installation providi ng 3x4 carriers. The three-cabine t installation allows up to 33 d igital traffic channels.

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Part 3

System Description

1 Introduction .................. 3-3

2 SystemArchitecture .............. 3-4

3 RBSOverview ................. 3-8

3.1 FunctionalOverview ........... 3-8

3.2 CallPaths ................ 3-12

3.3 Signaling ................. 3-13

3.4 Synchronization ............. 3-15

3.5 CRI and PCM Link Configuration (T1) . . . 3-16

4 EquipmentConfiguration ............ 3-19

5 EquipmentDescription ............. 3-21

5.1 Control Radio Interface Cabinet (CR I) . . . 3-23

5.2 TransceiverCabinet(TCB) ........ 3-26

5.3 An tenna Near Part Cabinet (ANPC) . . . . 3-28

5.4 HybridCombiner ............. 3-30

5.5 Transmit Bandpass Filter (TXBP) . . . . . 3-31

5.6 Measurement Coupler Un it (MCU) . . . . . 3-31

5.7 Multi-Carrier Power Amplifier (MC PA) . . . 3-32

5.8 RBS P ower Distribution Cabine t (POW D) . . 3-33

5.9 MC PA Power Distribution Cabinet

(HC-POWD) ............... 3-34

6 TechnicalSpecifications ............ 3-36

6.1 Ele ctrical and RF Specifications . . . . . . 3-36

6.2 Mechanical and Environmental

Specifications .............. 3-38

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System Description

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1 Introd uction

This section provides an overview of the RBS 884 Macro with M CPA, 1900 MHz radio base station (RBS). Areas covered include system architecture, configuration, functional units and technical specifications.

This RBS supports digital TDMA a nd operates at 1850–1990 MHz (divided

into 6 sub-bands) and is part of the Mobile Base Station (MBS) subsystem. It handles the communication between a Mobile Switching Center (MSC) and Mobile Stations (MSs). This radio base station also supervises the quality of radio transmission during a call in progress. The MBS consists of hardware and software located in the MSC as well as in the RBS.

The Macro with MCPA , 1900 MHz system is available in the following configurations:

System Description

• 1, 2, and 3 Sector x 15 carriers

• 1, 2, and 3 Sector x 23 carriers

• 1, 2, and 3 Sector x 31 carriers

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System Description

A BC

1900 MHz Uplink Sub-bands

DEF

1850

1865

1900 MHz Downlink Sub-bands

DEF

A BC

1930

Figure 3-1. 1900 MHz Sub-Band Spectrum

1945

1870

1950

1885

1965

1890

1970

1895

1975

1910

1990

2 System Architecture

The Macro with MCPA, 1900 MH z controls and handles communication between the MSC and the mobile stations. The configur ation of the equipment in a specific system depends on the following:

• Number of sectors

• Number of voice channels in each sector

• Transmit power

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• Number and type of antennas

• System mode (analog, digital, or both)

System Description

MSC

Figure 3-2 on page 3-5 shows the m

PCM Links

Radio Base Station

Antennas

ain RBS connections.

Sector A

RX RX

Sector B

RX RX

Sector C

RX RX

Figure 3-2. General Overview of RBS 884 Configuration

Figure 3-3 on page 3-6 shows the primary components of the MSC and RBS.

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System Description

MSC

Public Switched Telephone Network

Figure 3-3. General Overview of RBS 884 Co nfiguration

Group Switch

Central Processor

The Group Switch (GS) attheMSCisresponsible for switching calls between subscriber terminals. The calls can be between two mobile subscribers or between a mobile subscriber and a subscriber in the public telephone network. The RBS contains several regional processors which are controlled by and work w ith the central processor. The regional processors control the switch and the transceivers (TRXs) in the base station. The switch in the base station ensures the speech signals from the M SC are connected to the correct TRX. The TRXs generate RF that is emitted by the base station antenna to the mobile term inals. The semipermanent connections are set up in the MSC.

Switch

Regional Processors

RBS

Transceivers

Mobile Terminals

Figure 3-4 on page 3-7 shows the logical parts of an RBS.

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System Description

Radio Base Station (RBS)

Antenna Near Part

- Filters

- Multi-Coupler (Rx amplifier)

- Combiners (one Tx antenna per sector)

- Test and calibration

Modem Part

- Converts speech and data to RF

- Power Splitters for RF input

- Tranceiver Units (TRXs)

Control Part

- MSC/traffic control communication

- Remote Multiplexer (terminates PCM)

- Signal Terminal (decodes control info)

- EMRPs (control TRXs)

Support Part

Power distribution, fans, external alarms

Mobile Switching Center (MSC)

Figure 3-4. Block Diagram of a Radio Base Station

The logical parts of the RBS 884 Macro are as follows:

• Control Part (COP) – provides communication between the MSC and the RBS hardware for radio traffic control and statistical data gathering. In the RBS 884 Macro, the COP consists of Control and Radio Interface (CRI) cabinet.

• Modem Part (MOP) – converts digitized speech and data into r adio frequency signals, hosts channel coding and decoding functions, and performs measurements on radio transmission quality. It is comprised of transceiver modules (TRXs) in the RBS and voice coders (TRABs) in the MSC. In the RBS 884 Macro, the MOP consists of the Transceiver cabinet ( TCB).

• Antenna Near Part (ANP) – contains components associated with the RF signal paths, such as combiners, pow er splitters, multicouplers,

T1/PCM Link

Power

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System Description

and bandpass filters. In the RBS 884 Macro with MCPA the A NP consists of the Antenna Near Part Cabinet (ANPC) and the Hybri d Combiner Cabinet (HCC). The c ombined ANP/RFTL/F ilter unit provides RSSI measurement, output power measurement and calibration, VSWR supervision, and RF path testing. The main functions of the ANP are as follows:

– Combine multiple TRX output signals to a single TX antenna – Filter TX and RX signals – Pre-amplify and distribute RX signals – Protect TRXs from reflected power – Provide isolation between t he TRXs – Calibrate and supervise the TRXs and associated RF components

• Support Part (SP) – provides general support, such as power supply and cooling. The components of this part vary significantly between the product lines.

3 RBS Overview

The Macro with MCPA, 1900 MHz is a modular RBS that supports digital Time Division Multiple Access (TDMA). The RBS is an omni-site consisting of one standardized 19” rack of r adio equipment and one 24” rack with MCPAs. Additional RBS equipment racks are combined a to form twoand three-sector systems.

3.1 Functional Overview

Figure 3-5 on page 3-9 is a functional block diagram of the Macro with MCPA.

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System Description

External Alarms

V24

ETB

EMRPB

EMRPS

EMRP

STR

Figure 3-5. Macro with MCPA, 1900 MHz

DEVSS

Time Switch

DEVCB

RTT

C-links

TRX

RX antennas

TX antennas

PSP

TRX

HCC

Figure 3-6 on page 3-10 is an example of the units and their interaction in the Control Radio Interface (CRI) cabinet and Transceiver Cabinet (TCB).

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System Description

CRI

V24

ETB

PCM links

ETB

STR

Figure 3-6. CRI and TCB Functional Block Diagram

EMRPS

. . .

EMRPS

EMRP

EMRPB DEVCB

DEVSB

RTT

1-5

C-links

NTSW

The Exchange Terminal Boards (ETBs) end the PCM links and connect the RBS to the MSC. The control signals for the RBS are carried on one time slot of the PCM link, and are ended by the Signal Terminal Receiver (STR).

C-link

DCON

C-link/T-link

1 2 ...16

RF to HCC

and MCPA

TRX

1 2

3 4

5 6 7

in backplane

TCB

PSP

RXBRXA

A set of Extension Module Regional Processor Speech Bus Interfaces (EMRPSs) is used to control the devices on a load sharing basis. Communication Links (C-links) connect device equipment (TRX, ALM, RFTL, and TIM ) to the Radio Transceiver Terminals (RTTs).

A Node Clock Time Switch (NTSW) connects control paths from the EMRPSs to the de vic e s. The t ime switch also routes the traffic data on paths set up between a time slot on an ETB and a device connected to an RTT. The time switch is controlled by a d edicated EMRP.

The received RF signal is split to all Transceiver m odul es (TRXs) by the Power Splitters (PSPs) and the Power Splitter backplane in the Transceiver Cabinet (TCB).The RF output from the TRXs are connected to the HCC.

Figure 3-7 on page 3-11 is an example of unit interaction in the HCC and ANPC. The configuration shows separate receive and transmit antennas.

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System Description

TRX

HCC

MCPA

TXBP

ANPC

MCA BIAS-T

MCB BIAS-T

LNA

From MCU in HCC

LNA

TIM

RXBP

Gain

PO-ALNARFTL

RXBP

ALM

MCU

To RFTL in ANPC1

Figure 3-7. HCC and ANPC Functional Block Diagram

The receive antenna signal input is first passed through a Receiver Bandpass filter (RXB P). It is then fed to the Multicoupler A (MC A) and B (MC B) units, wh er e the signal is amplified to c o mpensate for Power Splitter (PSP) losses. The multicouplers also receive signals from the Radio Frequency Test Loop (RFTL) unit so that the receive path can be tested. Multicoupler outputs are fed to the PSPs, which distribute the signals to the TRXs through the TCB backplane. Each TRX receives both A- and B-branch receive signals and demodulate the signals to baseband.

TRX transmit outputs are connected to the combiners where they are combined into one signal. This signal is directed to the MCPA, Transmitter Bandpass ( TXBP) filter, and Measurement C oupler Unit (MCU), after which it is output to the antenna. The MCU acts as an interface to the Radio Frequency Test Loop (RFTL), which performs various tests on the RF signals, such as measuring forward and reflected power.

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System Description

3.2 Call Paths

3.2.1 Receive P ath

RX Antennas

As shown in Figure 3-8 on page 3-12, the received signal is passed through the Receiver Bandpass (RXBP) filters in the TMA s (if used) and ANPC. The signals are fed to MCUs, MC-A, and MC-B, that amplify the signal to compensate for Power Splitter (PSP) losses. The MCs also receive signals from the Radio Frequency Test Loop (RFTL). T he MC outputs are fed to the PSPs which distribute the signals through the TCB backplane to the TRXs. Each TRX receives both A- and B-branch receive signals and demodulate the signals to baseband. Nominal gain from the receive antenna is 5.2 dB (6.5 dB with a TMA).

RFTL

TMA with RXBP

Figure 3-8. Macro with MCPA, 1900 MHz Receive Path

BIAS

-T

ANPC

RXBP

MC A

MC B

3.2.2 Transmit Path

TRX

PSP

TRX

TCB

As shown in Figure 3-9 on page 3-13, TRX transmit outputs are connected to the HCC which combines the signals into a single output. The signal is passed through the M CPA, TXBP filter, and MCU. The MCU provides an

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System Description

interface to the RFTL for measuring forward and reflected power. The signal is tranmitte d to the TMA (if installed) and then to the tranmit antenna.

TRX TRX TRX

TRX

TCB HCC ANPC

Figure 3-9. Macro with MCPA, 1900 MHz Transmit Path

HCC

MCPA

3.3 Signaling

3.3.1 Control Signaling

Control signaling for RBS equipment is as follows:

• The MSC Central processor (CP ) sends the control signal to the Signaling Terminal Central (STC) board.

TXBPTXBP

MCU

RFTL

• The STC board converts the signal format and sends the signal to the Exchange Terminal Circuit (ETC).

• The ETC inserts the control signal into a time slot on the PCM (T1) link to the Control Radio Interfac e (CRI).

• The control signal in the time slot is extracted by the Exchange Terminal Board (ETB) and sent to the Signaling Terminal Regional (STR).

• The STR converts the information back to processor format and outputs it on the Extension Module Regional Processor Bus (EMRPB).

• The EMRPB and the Extension Module Regional Processor with Speech Bus (EMRPS) boards a re connected to the EMRPB.

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System Description

3.3.2 Speech Signa ling

Speech signaling for RBS equipment is as follows:

• A speech or data signal from the Public Telephone Switching

• A digital call is:

– The EMRP controls equipment i n the CRI cabinet including the

Node Clock Time Switch (NTSW) and ETB boards

– The EMRPS is an EMRP with extended processor power and

a speech bus interface. It is connected to both the EMRP bus and the TSW speech bus and controls equipment in the TCB and ANPC. These boards also facilitate communication with the MSC’s Man-Machine Interface (MMI) by providing a V.24 interface for a teletype or Typewriter (TW) peripheral.

Network (PSTN) is received by the gr oup switch (GS ) at the MSC

– Routed to the Transcoder and Rate Adaptation Board (TRAB) – Converted into compressed format used in the air interface either

with Algebraic Code Excited Linear Prediction (ACELP) or Vector Sum Excited Linear Prediction (VSELP)

– Combined with two other voice paths which share same

frequency

– Routed to the correct Exchange Terminal Circuit (ETC)

• The signal is sent over a T1 line to the Control and Radio Interface (CRI) where it is:

– Routed to an Exchange Terminal Board (ETB) – Routed through the Time Switch (TSW) – Routed to a Radio Transceiver Terminal (RTT), which is an

interface to a transceiver (TRX) in the Transceiver Cabinet (TCB) via a Communication Link (C-link)

• In the TCB the signal is passed through a Transceiver (TRX) where it is :

– Converted to RF – Sent to the Hybrid Combiner (HCC)

• In the HCC, signals are c ombi ned 16:1 and then combined 2:1 (32:1) and sent to the MCPA

• The MCPA sends the signal to the TXBP and M CU where it is sent to the ANPC

• In the ANPC, RF is coupled to the antenna(s)

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3.4 Synchronization

The Macro with MCPA, 1900 MHz platform provides t he following synchronization:

• Network Synchronization

• Carrier Frequency Synchronization

• Air Frame Synchronization

CRI

System Description

PCM

ETB

BUFFER

EXT

FRAMEDET

NTSW

4 kHz 8 kHz

PLL

CFR, 64 kHz

TIM

PLL

Backplane

RTT

TRX

PLL

Master Reference

Node Reference, 64 kHz

Figure 3-10. Macro with MCPA, 1900 MHz Synchronization

3.4.1 Network Synchronization

Network Synchronization is p rovided by the ETB with buffers and the NTSW clock for error-free transmission of data to and from the MSC. The clock is locked to the reference signal provided from the MSC. The signal is

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System Description

superimposed on the traffic link connecting the RBS to the MSC. Using this signal, the ETB creates a synchronization clock with a f requency of 8 kHz.

3.4.2 Carrier Frequency Synchronization

Carrier Frequency Synchronization is provided by the NTSW and TIM. The 8kHzclockisscaleddownto4kHzbytheNTSWintoaMasterReference (MR) signal (see Figure 3-10 on page 3-15). The MR is used by the TIM to generate a 64 kHz Carrier Frequency Reference (CFR) that is distributed to the TRXs v ia the RTTs and the C-Links.

Carrier Frequency Stabilization is handled by the TIM and holdover is at least 72 hours after a loss of the synchronization signal on the network. To obtain carrier frequency accuracy, the reference signal must be traceable to a source of Stratum 2 level or better.

3.4.3 Air Frame Synchronization

Air Frame Synchronization phase aligns all air frames transmitted from the RBS. The TIM provides the synchronization that is distributed to each TRX. The DCON board provides daisy-chain connections between TCBs.

3.5 CRI and PCM Link Configuration (T1)

The Extension Module Regional Processor (EMRP) bus is the lo cal comunication link between the regional processors (RPs) and the Signal Terminal Regional (STR). The STR and the Signal Terminal Central (STC) in the MSC make up the control link between any RP and the central processor (CP).

The CRI can be configured with two EMRP buses, A and B, to facilitate multiple PCM links. Up to four (4) PCM (T1) links can be connected to three CRIs. Each CRI-CRI connection can cascade in both directions to allow time slots to be routed f rom any incom ing PCM (T 1) to any of the three sectors.

Figure 3-12 on page 3-18 shows the 3x15 configuration. The first PCM (T1) link is connected to ETB-1 in CRI-a. Eight time s lots are

used in Sector A and the remaining sixteen time s lots are routed to Sector B and Sector C. Eight tim e slots are routed from ETB-3 in CRI-a to ETB-2 in CRI-b. Also, eight time slots are routed from ETB-2 in CRI-a to ETB-2 in CRI-c. As a result, eight time slots are available in each sector.

The second PCM (T1) link is connected to ETB-1 in CRI-b. Eight time slots are used in Sector B and the remaining sixteen time slots are routed to Sector A and Sector C. Eight time slots are routed from ETB-2 in CRI-b to ETB-3 in CRI-a. Al so, eight time slots are routed from ETB-3 in CRI-b to ETB-3 in CRI-c. It should be noted that this configuration re-routes the time slots from ETB-3 in CRI-b back to ETB-3 in CRI-a on the same physical link as

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System Description

the original eight time slots from Sector A to Sector B. This bidirectional configuration results in 16 time slots in each sector.

The third PCM (T1) link is connected to ETB-1 in CRI-c. Eight ti me slots are used in Sector C and the remaining sixteen time slots are routed to Sector A and Sector B. This bidirectional configuration r esults in 24 time slots in each sector.

3x15 (T1 and ETB Connections)

T1 #1 24 Time Slots

8 Slots to Sector 1

7 Slots to ETB-2

8 Slots to Sector 2

CRI-a

ETB-1

(Pos 5)

1 slot for

CTRL

ETB-2

(Pos 6)

T1 #2 24 Time Slots

7 Slots to CRI-b ETB-2 14 Slots to CRI-a ETB-2

7 Slots to Sector 2

CRI-b

ETB-1

(Pos 5)

1 slot for CTRL & 1 spare

ETB-2

(Pos 6)

14 Slots to ETB-2

8 Slots to Sector 3

7 Slots to Sector 3

Sector 1 15 Slots

7 Slots to Sector 1

Sector 2 15 Slots

Sector 3 15 Slots

Figure 3-11. 3x15 CRI-PCM (T1) Configuration

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System Description

3x23 (T1 and ETB Connections)

T1 #1 24 Time Slots

8 Slots to Sector 1

7 Slots to ETB-2

8 Slots to Sector 2

CRI-a

ETB-1

(Pos 5)

1 slot for

CTRL

ETB-2

(Pos 6)

7 Slots to Sector 1

T1 #2 24 Time Slots

7 Slots to CRI-b ETB-2

14 Slots to CRI-a ETB-2

7 Slots to Sector 2

CRI-b

ETB-1

(Pos 5)

1 slot for CTRL & 1 spare

ETB-2

(Pos 6)

ETB-3

(Pos 20)

T1 #3 24 Time Slots

CRI-c

ETB-1

(Pos 5)

14 Slots to ETB-2

8 Slots to Sector 3

8 Slots to ETB-3

7 Slots to Sector 3

ETB-3

(Pos 20)

8 Slots to CRI-b ETB-3

Sector 1 23 Slots

8 Slots to Sector 1

Sector 2 23 Slots

8 Slots to Sector 3

8 Slots to Sector 2

Sector 3 23 Slots

Figure 3-12. 3x24 CRI-PCM (T1) Configuration

Figure 3-13 on page 3-1 9 shows the 3x31 configuration. In addition to the connections for the 3x24 configuration, a fourth PCM (T1) link is connected to ETB-3 in CRI-c. Eight time slots are use d in Sector C and the remaining sixteen time slots are routed to Sector A and Sector B. This bidirectional configuration results in 32 t ime slots in each sector.

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3x31 (T1 and ETB Connections)

System Description

T1 #1 24 Time Slots

8 Slots to Sector 1

7 Slots to ETB-2

CRI-a

ETB-1

(Pos 5)

1 slot for

CTRL

ETB-2

(Pos 6)

7 Slots to Sector 1

T1 #2 24 Time Slots

7 Slots to CRI-b ETB-2

14 Slots to CRI-a ETB-2

8 Slots to Sector 2

7 Slots to Sector 2

CRI-b

ETB-1

(Pos 5)

1 slot for CTRL & 1 spare

ETB-2

(Pos 6)

ETB-3

(Pos 20)

T1 #4

24 Time Slots

14 Slots to ETB-2

7 Slots to Sector 3

8 Slots to Sector 3

T1 #3 24 Time Slots

CRI-c

ETB-1

(Pos 5)

8 Slots to ETB-3

ETB-2

(Pos 6)

8 Slots to ETB-3

ETB-3

(Pos 20)

Sector 1 23 Slots

8 Slots to Sector 1

Sector 2 23 Slots

16 Slots to Sector 3

8 Slots to Sector 2

Figure 3-13. 3x31 CRI-PCM (T1) Configuration

4 Equipment Configuration

Figure 3-1 4 on page 3-20 shows a typical Macro with MCPA, 1900 MH z three-sector system configuration.

16 Slots to CRI-b ETB-3

Sector 3 23 Slots

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System Description

1234 AMPLIFIER

ON OFF

1234 AMPLIFIER

ON OFF

1234 AMPLIFIER

ON OFF

1234 AMPLIFIER

ON OFF

Figure 3-14. Typical Macro with MCPA, 1900 MHz Configuration

Typical 1900 MHz configurations are a s follows:

• 1, 2, or 3 Sector(s) x 15 channels (1x15, 2x15, 3x15)

• 1, 2, or 3 Sector(s) x 23 channels (1x23, 2x23, 3x23)

• 1, 2, or 3 Sector(s) x 31 channels (1x31, 2x31, 3x31)

The Macro with MCPA supports up to 16 TRXs per Transceiver Cabinet (TCB) with two TCBs per sector. This conf iguration allows up to 30 carriers per sector with a 360 KHz channel spacing (4/12 reuse factor).

1234 AMPLIFIER

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5 Equipment Description

The Macro with MCPA, 1900 MHz system is a modular single-sector RBS consisting of one to three 19-inch RBS racks and one or two 24-inch MCPA racks. As shown in Figure 3-15 on page 3-23, the RBS rack contains four equipment magazines, one hybrid combiner, and one POWD. A two-sector system consists of two RBS racks (two single sector modules) and a three-sector system consists of threeRBSracks( three single-sector modules).

The RBS rack contains the following equipment:

• (1) Control Radio Interface Cabinet (CRI) containing: – Exchange Terminal Board (ETB)

– Extension Module Regional Processor (EMRP) – Node Clock Time Switch (NTSW) – EMRP Speech Bus Interface (EMRPS) – Signal Terminal Regional (STR)

System Description

– Radio Transceiver Terminal (RTT) – DC/DC Converter

Note: The Macro with MCPA CRI does not have a fan unit. As a result,

the Fan Fail alarm is disabled.

• (2) Transceiver Cabinets (TCB) containing: – Transceiver Module (TRX)

– Power Spl itter (PSP) – RF Backplane – Power and Fan Connection Board (PFCON) – Data Connection Board (DCON) – Digital Verification Receiver (DVER)

• (1) Antenna Near Part Cabinet (ANPC) containing: – Power Connection Board (POC)

– Alarm M odule (ALM) – Timing Module (TIM) – Multicoupler (M C ) – Receive BandPass filter (RXBP)

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System Description

• (1) 32:1 Hybrid Combiner

• (1) Power Distribution Cabinets (POWD) The Multi-Carrier Power Amp

lifier (MCPA) Rack contains the following

equipment:

• (1) MCPA Cabinet w ith four (4) MCPA modules (per sector)

• High-Current POWD

• Transmit Bandpass Filter (TXBP)

• Measurment Coupler Unit (MCU)

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POWD

System Description

POWD

TCB

CRI

HCC

TCB

PFCON

TRX TRX TRX TRX TRX TRX TRX TRX TRX TRX TRX TRX TRX TRX

POWER

ERROR

FAN

CID

24V

PFCON 1

TCB

Pos 1 2 3

TCB

Pos 1 2 3

POWER ERROR

24V

FAN

CID

24V

PFCON 1

PFCON

POWER ERROR POWER ERROR

24V

ERROR TATUSS

TRX 1

DC/DC

POWER ERROR TATUSS

TRX 1

ERROR

TATUSS

STATUS

TATUSS

Tx Out Tx Out Tx Out

TRX 1 TRX 2 TRX 3 TRX 4 TRX 5 TRX 6 TRX 7 TRX 8

TRX 5

TRX 3

TRX 6

TRX 2

TRX 4

6 7

4 5

TRX TRX TRX TRX TRX TRX TRX TRX TRX TRX TRX TRX TRX TRX

POWER

ERROR

TATUSS

STATUS

TATUSS

Tx Out Tx Out Tx Out

TRX 1 TRX 2 TRX 3 TRX 4 TRX 5 TRX 6 TRX 7 TRX 8

TRX 5

TRX 3

TRX 6

TRX 2

TRX 4

6 7

4 5

ERROR

TATUSS

TRX 7

8 9

POWER ERROR TATUSS

TRX 7 8 9

POWER

ERROR

TATUSS

TATUS

TRX 11

TRX 9

TRX 10

TRX 8

12 13

10 11

POWER

ERROR

TATUSS

TATUS

TRX 11

TRX 9

TRX 10

TRX 8

12 13

10 11

PFCON

DCON

TRX

PSP16TRX

DCON

POWER ERROR TATUSS

TRX 16

POWER

ERROR POWER ERROR

CLINK

FAN

MCB1

MCB3

CID

MCB2

MCB4

24V

CLINK

MCA4

MCA2

MCA3

24V

SYNCout

Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out

MCA1

SYNCin

DCON 2 PFCON 2

DCON 1

PSP

20 21

DC/DC

POWER

ERROR

STATUS

TATUS

STATUS

TRX 15

TRX 13

TRX 14

TRX 12

16 17 18 19

14 15

TXBP/MCU

PFCON

DCON

TRX

PSP16TRX

DCON

POWER ERROR TATUSS

TRX 16

POWER

ERROR POWER ERROR

CLINK

FAN

MCB1

MCB3

CID

MCB2

MCB4

24V

CLINK

MCA4

MCA2

MCA3

24V

SYNCout

Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out

MCA1

SYNCin

DCON 2 PFCON 2

DCON 1

PSP

20 21

ON OFF

MCPA

POWER

ERROR

STATUS

TATUS

STATUS

TRX 15

TRX 13

TRX 14

TRX 12

16 17 18 19

14 15

1234

AMPLIFIER

1234

AMPLIFIER

ANPC

ON OFF

Figure 3-15. Macro with MCPA, 1900 MHz Equipment (Omni-site)

5.1 Control Radio Interface Cabinet (CRI)

The CRI controls communication between the MSC and the RBS. The CRI provides an interface to the transmission network (PCM), a time switch for

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System Description

1 2 3 4 5 6 7 8 9101112131415161718 19 202122 23

setting up semi-permanent paths, and an interface to the de v ices (C-link). The clocks in the CRI are synchronized to the network by the TIM. Incoming clock are filtered and used as a reference frequency for the carrier s. Figure 3-16 on page 3-24 shows the location of devices in a fully-equipped CRI. Device descriptions are provided in the following sections.

The Macro with MCPA CRI is not equipped with a Fan Unit. As a result, the Fan Fail signal is disabled.

DC/DC

STR

EMPC0ETB

ETB

EMRPS

1-8

Figure 3-16. CRI Board Layout

5.1.1 Exchange Terminal Board (ETB)

The ETB is located in the CRI cabinet and is an interface to the transmission network. It is a demultiplexer that extracts the 64 kbit/sec control link from a 24/32 channel PCM link. Two variants are available: ETB/ETP for E1

RTT

1-5

ETB

DC/DC

NTSW

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Page 45

and ETB/24 for T1. Refer to Part 3 – Installation and Start-up for E1/T1 DIP switch settings.

Note: The Macro with MCPA system utilizes cascaded CRIs and

multiple PCM links. As a result, an additional ETB replaces the RTT unit at position 20 and an additi onal ETB is installed in position 5 in the second and third CRIs.

5.1.2 Extension Module Regional Processo r (EMRP)

The EMRP is located in the CRI cabinet and handles the hardware in the base station on behalf of the central processor. It controls the time switch (NTSW) and the signaling hardware used for communication with the central processor. The EMRP is connected to the time switch by the Device Control Bus (DEVCB).

5.1.3 Node Clock Time Switch (NTSW)

The NTSW is located in the CRI cabinet and handles switching of time slots, clock synchronization, and stabilization of the carrier frequency reference.

System Description

The NTSW sets up semi-permanent connections between the tr link and the RTTs for traffic signaling. The N TSW also sets up c onnections between the EMRPS and RTT for control signaling. Other support f unctions include PCM link redundancy handling between the RBS and MSC and to other RBS sites

Note: Since a Timing Module (TIM) is used with a Macro with MCPA,

1900 MHz system, the R ITSW is replaced with a Node Clock Time Switch (NT SW).

5.1.4 EMRP Speech Bus Interface (EMRPS)

The EMRPS module is located in the CRI cabinet and is an EMRP with extended processor power and a speech bus interface. The EMRPS controls the transceivers and other support equipment in the base station. The EMRPS is connected to the EMRP bus and to the time switch speech bus. OneEMRPScancontrolupto5TRXs(4TRXsas12DVC),orupto32 ANPC devices. The EMRPS can also control a combination of TRX and ANPC devices. A V.24 port and MMI port is provided.

5.1.5 Signal Terminal Regional (STR)

The STR is located in the CRI ca b ine t and handles control signa ling to and from the MSC . The STR is an interface between the control link and the Extension Module Regional Processor Bus (EMRPB).

ansmission

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System Description

5.1.6 Radio Transceiver Terminal (RTT)

The RTT is located in the CRI cabinet and provides eight C-link connections. Each C-link connection carries control information and speech data to equipment in other cabinets (TRXs, ALMs, and RFTLs).

5.1.7 DC/DC Converter

The DC/DC converter is located in the CRI cabinet and converts the +24 V DC into other DC voltage levels used by t

5.2 Transceiver Cabinet (TCB)

The TCB contains the m odem function that converts speech and data into RF signals. As shown in Figure 3-17 on page 3-27, the Macro with MCPA, 1900 MHz TCB contains up to (16) 200 mW TRXs.

Note: The first TCB in each sector uses one TRX as the DVER. All 16

TRXs are assigned to one sector.

he CRI.

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Page 47

Fan

System Description

PFCON

POWER ERROR POWER ERROR

FAN

CID

24V

PFCON 1

TCB

Pos 1 2 3

PFCON

TRX TRX TRX TRX TRX TRX TRX TRX TRX TRX TRX TRX TRX TRX

POWER

ERROR

TATUSS

TRX 1

STATUS

TATUSS

Tx Out Tx Out Tx Out

TRX 1 TRX 2 TRX 3 TRX 4 TRX 5 TRX 6 TRX 7 TRX 8

TRX 3

TRX 2

4 5

TATUSS

TRX 4

TATUSS

TRX 5

TRX 6

6 7

TATUSS

TRX 7

TRX 8

8 9

TATUSS

TATUS

TRX 9

TRX 10

10 11

ERROR S

TATUS

TRX 11

TRX 12

12 13

POWER

ERROR

ERROR STATUS

STATUS

TRX 13

TRX 14

14 15

TRX

POWER

ERROR

TATUS

TATUSS

Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out Tx Out

TRX 15

TRX 16

16 17 18 19

TRX 1-16

PSP4 TRX

MCB1

MCB3

MCB2

MCB4

MCA4

MCA2

MCA3

MCA1

PSP

DCON

CLINK

SYNCout

SYNCin

DCON 1

DCON

PFCON

DCON

POWER

ERROR POWER ERROR

CLINK

FAN

CID

24V

CLINK

24V

SYNCout

SYNCin

DCON 2 PF CON 2

20 21

PFCON

Figure 3-17. Macro with MCPA, 1900 MHz TCB

5.2.1 Transceiver Module (TRX)

The TRX transmits and receives radio signals to and from wireless mobile stations. It includes all functions for handling one radio channel, such as channel coding and decoding, modulation and demodulation, power amplification, diversity combination, and measurements. Each TRX is assigned to one carrier frequency and each channel is divided into three time slots for digital and one time slot for analog voice channels. All TRXs in a TCB are used in a single sector. The connected C-Link has two duplex 64 kbit/sec channels (time slots) connected. One timeslot is the digital control channel and the other timeslot is the voice channel.

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System Description

5.2.2 Power Splitter (PSP8+))

The PSP8+ located in each TCB distributes the received RF to the power splitters in the RF backplane of the TCB. The PSP8+ in TCB-1 splits each branch into four outputs that are connected to the RF backplane.

5.2.3 RF Backplan e

The R F Backplane, also called Power Splitter backplane, feeds the TRXs with receive signals. Incoming signals fro the RF backplane. The backplane also splits each signal to feed the TRXs.

5.2.4 Power and Fan Connection Board (PFCON)

The PFCON filters and bypasses power to the TRXs and to the fan. It also connects the air frame sync to the backplane for distribution to each TRX.

5.2.5 Data Connection Board (DCON)

The DCON provides the C-link connections for up to eight TRXs. The C-links come from the RTT units in the CRI.

m the PSP outputs are connected to

5.2.6 Digital Verification Receiver (DVER)

The DVER TRX is used for digital signal verification and is a ssigned to the TRX f itted in the last TRX position of the first TCB in each se ctor.

5.3 Antenna Near Part Cabinet (ANPC)

A Macro with MCPA RBS module (omni site) contains one ANPC that functions as the radio transmitter/receiver interface. It also includes external alarm, test, and calibration functionality.

The ANPC filters, amplifies (in the receive path), and monitors the RF signal. Other functions include looping radio signals, output and reflected power measurement, and RSSI calibration.

The Macro with MCPA, 1900 MHz ANPC contains the following components:

• Multicoupler (2)

• Receiver Bandpass Filter (1)

• Radio Frequency Test Loop

• Timing Module (2 – Sector 1 only)

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POC

System Description

• Power Connection Board

• Alarm Module

✚

DC1

DC2

ALM

Power

Error

Status

Power

Error

STA 1

STA 2

CLINK

Control

TIM

AFS In

AFS CFR a

AFS CFR b

AFS CFR c

TIM

Power

Error

STA 1

STA 2

AFS In

AFS CFR a

AFS CFR b

AFS CFR c

✚ ✚

RFTL

Power

Error

Status

CLINK

FWD A

✚

Power

Error

EXP

OUT 1

OUT 2

Power

Error

EXP

OUT 1

OUT 2

✚

✚ ✚

FWD B

CFR

Alarm

CLINK

✚

CFR a MR CFR b

MR CFR c

CAL DEB

CLINK

TIM

✚

a MR CFR b MR CFR c

CAL DEB

RFTL

REF A

REF B

RFTL Out A

RFTL Out B

✚

POC

Fan 1

Fan 2

CID

✚

ALM

Figure 3-18. Macro with MCPA, 1900 MHz ANPC

5.3.1 Multicoupler (MC)

The MC amplifies and splits the received antenna signal before it is connected to the PSP. There are two MCs for each sector for improved reception through diversity.

OUT 3

OUT 4

RFTL

INPUT

OUT 3

OUT 4

RFTL

INPUT

✚

✚ ✚

RXBP

✚ ✚

5.3.2 Receiver Ba ndpass Filter (RX BP)

The RXBP filters the receive band. It comprises two bandpass filters, one for each branch. The RX inputs are connected to the antenna feeders. The RXBP also includes a directional coupler for connection to the RFTL.

5.3.3 Radio Freque ncy Test Loop

The RFTL has a C-link connection to the CRI for control. The RFTL provides measurement of forward and reverse outp ut power, alarm supervision of the Voltage Standing Wave Ratio (VSWR), and Receive Signal Strength Indicator (RSSI) measurement.

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System Description

5.3.4 Timing Module (TIM)

The TIM supports separate clocks for network synchronization and carrier frequency stabilization.

5.3.5 Power Connection Board

The Power Connection Board connects power to the ANPC.

5.3.6 Alarm Module (ALM)

The Alarm Module has 16 internal alarm inputs (for instance, fan and MC failure) and 32 external alarm inputs (for instance, fire alarms and intrusion alarms). The ALM is controlled over a C-link by the CRI.

5.4 Hybrid Combiner

The Hybrid Combiner cabinet contains two 16:1 combiners and one 2:1 combiner to connect 32 TRXs to one transmit antenna. The 16:1 combines 16 TRX outputs (with minimum insertion loss while providing suffcient isolation between the TRXs) and feeds the signal to a 2:1 combiner. A total of 32 carriers feed the Multi-Carrier Power Amplifier (MCPA).The Transmit Bandpass Filter (TXBP) and the Measurement Coupler Unit (MCU) ar e located in the MCPA rack. The combiner is also equipped with a

–40 dB sample port.

-40dB Sample Port

In 1-16

Figure 3-19. Hybrid Combiner Unit

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RF Out 1-32

In 17-32

Page 51

5.5 Transmit Bandpass Filter (TXBP)

The Transmit Bandpass Filter (TXBP) attenuat es the high level of out-of-band emissions associated with the MCPA. The TXBP consists of an eight-pole bandpass filter designed for 1930–1990 MHz. The TXBP has an

RF inlet from the MCPA and an output which is fed to the MCU.

System Description

1234

ON OFF

AMPLIFIER

1234 AMPLIFIER

Figure 3-20. TXBP and MCU

5.6 Measurement Coupler Unit (MCU)

TXBP/MCU

The Measurem ent Coupler Unit (MCU) measures reflected and forward power. It diverts a fraction of the forward and refl ected transmit signals to the RFTL . The TX input is connected to the TXBP and the TX output is connected to the antenna fee der. The MCU contains a low-pass filter to attenuate harmonics.

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System Description

5.7 Multi-Carrier Power Amplifier (MCPA)

The MCPA is a linear feed-forward power amplifier that operates in the 1930–1990 MH z band. The MCPA can simultaneously transmit multiple

carriers at rated full power of up to 320 watts at the MCPA output and exceeds –63 dBc third order intermodulation distortion (IMD).

The MCPA design is modular and consists of up to four amplifiers mounted in a subrack. Each amplifier can operate independently at 80 watts output power. The four amplifiers in the Macro with MCPA system operate in parallel to increase peak power output and provide redundancy.

Performance monitoring is provided by a status connector on each amplifier module. The front panel of each amplifier contains unit level status indicators and an RF on/off/reset switch.

1234

ON OFF

AMPLIFIER

1234 AMPLIFIER

1234

ON OFF

AMPLIFIER

1234 AMPLIFIER

Figure 3-21. MCPA Rack and Amplifier Modules

ON OFF

Power Switch

ON OFF

STATUS

+27 VDC

+15 VDC

+5 VDC

-5 VDC

Reset

Over Pwr

High Temp

VSWR

DC Fail

Fan Fail

Loop Fail

Low Pwr

LPA DISAB

ALARMS

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Page 53

5.8 RBS Power Distribution Cabinet (POWD)

The Power Distribution (POWD) cabinets provide power distribution, breaker protection and alarm indications for active areas of the radio base station. One POWD is mounted in the top of each 19-inch rack.

As shown in Figure 3-22 on page 3-34, each POWD contains twelve (12) 30-amp circuit breakers. The breaker assignments are as follows:

Table 3-1. POWD Circuit Breaker Assignments

Circuit Breaker Function

CB 1 TCB 1 –PFCON1–DC1 CB 2 TCB 1 – P FCON 1 – DC 2 CB 3 ANPC – DC 1 CB 4 ANPC – DC2 CB 5 TCB 2 – P FCON 1 – DC 1 CB 6 TCB 2 – P FCON 1 – DC 2 CB 7 CRIa–FILTL

System Description

CB 8 CRIa–FILTR

CB 9 TCB 2 – P FCON 2 – DC 1 CB 10 TCB 2 – PFCON 2 – DC 2 CB 11 TCB 1– PFCON 2 – DC 1 CB 12 TCB 1– PFCON 2 – DC 2

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Page 54

System Description

Power Distribution Circuit Breakers 1-12

Figure 3-22. RBS Power Distribution Cabinet

5.9 MCPA Power Distribution Cabinet (HC-POWD)

The MCPA Power Distribution cabinet provides high current power distribution (HC-POWD) and cir cuit breaker protection for the MCPA amplifiers mounted in the MCPA rack. One P O WD is mounted in the top of the 24-inch MCPA rack.

As shown in Figure 3-23 on page 3-35, each POWD contains sixteen (16) breaker positions with twelve (12) 60-amp circuit breakers (one for each MCPA amplifier). The breaker assignments are as follows:

Table 3-2. POWD Circuit Breaker Assignments

Circuit Breaker Function

CB 1 Sector 1 –MCPAAmpModule4 CB 2 Sector 1 – MCPA Amp Module 3 CB 3 Sector 1 – MCPA Amp Module 2 CB 4 Sector 1 – MCPA Amp Module 1

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Page 55

Table 3-2. POWD Circuit Breaker Assignments (Continued)

CB 5 Sector 2 – MCPA Amp Module 4

CB 6 Sector 2– MCPA Amp Module 3

CB 7–8 Not used

CB 9 Sector 2– MCPA Amp Module 2 CB 10 Sector 2– MCPA Amp Module 1 CB 11 Sector 3– MCPA Amp Module 4 CB 12 Sector 3– MCPA Amp Module 3 CB 13 Sector 3– MCPA Amp Module 2 CB 14 Sector 3– MCPA Amp Module 1

CB 15–16 Not used

System Description

CB1-CB6 CB9-CB14

Figure 3-23. MCPA Power Distribution Cabinet

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System Description

6 Technical Specifications

General technical specifications for the Macro wi th MCPA, 1900 MHz Medium P ower system are shown in the following tables:

6.1 Electrical and RF Specifications

Table 3-3. Ma cro with MCPA, 1900 MHz Technical Specifications

Description Specification

up to 32 per sectorNumber of transceivers (TRX) in

each sector

Note: Includes 30 carriers and one TRX in each sector for digital verification

(DVER) and one TRX for signal strength receiver (SR).

Number of transceivers (TRX) in each TCB

Number of carri ers 31 in each sector (maximum)

Transmitting Characteristics

Transm itting frequency band 1930–1990 MHz Output Power at output port 54 ±0.5 dBm (depending on configuration) Output p ower/carrier 15TRXs–18.2W

Channel spacing 360 kHz

Receiving Characteristics

Receiving f requency band 1850–1910 MHz Minimal receive channel spacing in

one cell Receiver sensitivity (fading, 8~100

km/h, with diversity, 3% BER)

PCM Connection

PCM Connection A NSI T1.403-1989

up to 16 in each cabinet (14+2 in TCB-1)

23TRXs–11.8W

31TRXs–8.78W

270 kHz

—113 dBm

Bit rate 1.544 Mbit/s

Board connector RPV 301 302/1

Electrical characteristics TR-NWT-000499

Number of T1 Lines supported Up to 4 Format Alternate Mark Inversion (AMI) and B8ZS formats; however, B8ZS should

be used when possible. Both the superframe and extendedsuperframe are

supported. Bit robbed signaling is not used.

Synchronization Traceable to a Stratum 2 reference

Powerwave®MCPA (Module S pecifications)

Frequency Range 1930–1990 MHz

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Page 57

Table 3-3. Macro with MCPA, 1900 MHz Technical Specifications (Continued)

Total Maximum Input Power -12 dBm Power Output 1 Module — 80 Watts (49.5 dBm)

2 Modules — 160 Watts (52.5 dBm) 3 Modules — 240 Watts (54.3 dBm) 4 Modules — 320 Watts (55.5 dBm)

System Description

Intermodulation Distortion and In-Band Spurious Emissions (30 KHz bandwidth)

RF Gain 54.5 dB Gain Adjustment Range 0to-15dB Gain Variation ±0.6 dB from 26 Vdc to 28 Vdc

Total Maximum Input Power +3.0 dBm Input Port Return Loss -14 dB (Minimum) Out of Band Spurious Emissions <-60 dBc (minimum) @ +24 Vdc to +28 Vdc Duty Cycle Continuous DC Input Voltage +23 Vdc to 30 Vdc DC Input Current 180 Am ps (45 Amps per module) @ 27 Vdc Input Voltage and 360 Watts

TXBP Specifications (Bandpass / Attenuation)

100 KHz – 824 MHz >45dB 824 MHz – 849 MHz >85dB 849 MHz – 854 MHz >45dB

-63dBc(Min)@+26to+28Vdc@ratedpower (24 carriers and 360 KHz channel spacing)

-0.8 to +0.6 from 24 Vdc to 26 Vdc

Output

910 MHz – 1700 MHz >45dB 1700 MHz to the 2nd Harmonic >30dB 2nd Harm on ic to the 3rd H armonic >5dB Insertion Loss <0.4dB Power 350 Watt average (4QAM modulated) Inter-Modulation generation for

two-tone at x44dBm

Combiner Specifications

Frequency Band 869 – 894 MHz Capacity 32:1 (two 16:1, one 2:1) Insertion Loss 16.3 dB ±0.5 dB Maximum Input Power ≤ 2 Watts per Input Port Input Return Loss ≥ 17 .5 dB

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IM3 < –130 dBm

Page 58

System Description

Table 3-3. Ma cro with MCPA, 1900 MHz Technical Specifications (Continued)

Output Retur n Loss ≥ 17.5 dB Isolation between Port s ≥ 40 dB

Power Supply

DC Supply voltage Nominal 27.2 V

Normal operation 26.2 V to 27.4 V

Safe function 21.7 V to 31.0 V

Power consumption (TRX) Power OFF

Maximum

Power consumption, Cabinets (fully equipped)

CRI 155 W

TCB (with 16 TRXs) 571 W )

ANPC 80 W

POWD 9W

MCPA Rack 14.7 kW

17 W

30.4 W

6.2 Mechanical and Environmental Specifications

Table 3-4. Ma cro with MCPA, 1900 MHz Technical Specifications

Description Specification

Dimensions and Weight

External dimensions (single RBS stack)

RBS stack weight Single Stack 600 lbs (273 kg)

Width 23.50 in (597 mm) Height 67 in (1702 mm) Depth 15.75 in (400 mm)

External dimensions (MCPA rack)

MCPA rack weight Single Stack 850 lbs (386 kg)

Environment

Climatic conditions during transport

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Width 29 in (737 mm) Height 72 in (2108 mm) Depth 20 in (508 mm)

Temperature: -40 Cto+70C Tem perature change ≤1 C/min Relative humidity 5 –100%

Absolute humidity ≤35 g/m³ Time ≤3months

Page 59

Table 3-4. Macro with MCPA, 1900 MHz Technical Specifications (Continued)

System Description

Climatic conditions during storage

Climatic conditions during normal operation

Mechanical conditions during transport and storage

Mechanical conditions during normal operation

Tem perature -25 Cto+60C Temperature change ≤0.5 C/min Relative humidity 5-95% Absolute humidity ≤29 g/m³

Time ≤12 months

+5 Cto+40CTem perature

(TMA -33 Cto+55C) Temperature change ≤0.5 C/min and ≤10 C/h Relative humidity 15 – 80% Absolute humidity 1–20g/m³ Sinusoidal vibration 20 m/s² 10 – 150 Hz Random vi brat ion (ASD) 2 m²/s³ 5 – 150 Hz Mechanical shock 200 m/s² <11 ms Air pressure 60 — 108 kPa (60 kPa corresponds to an

altitude of 4500 m) Sinusoidal vibration 5 m/s² 10-150 Hz Random vi brat ion (ASD) 0.5 m²/s³ 5-150 Hz Seismic exposure (safe

function)

35s1–15Hz(AccordingtoIEC68-2-57)

EMC

Electromagnetic Emission

Enclosure

Air pressure 60 – 108 kPa (60 kPa corresponds to an

altitude of 4500 m)

Radiatedemission 30MHz

-1GHz Radiatedemission 30MHz

-1GHz Conducted emission DC

Supply Conducted emission

Telecommunication Lines Radio frequency field 80

MHz - 1 GHz except RX band ±5%

ESD 8kVcontactdischarge(AccordingtoBellcore

Class B digital device (According to FCC Part

15)

-13 dBm (transmitter) (According to FCC Part

22)

120 Hz - 100 MHz: According to Bellcore 3.2.4

120Hz–100MHz:AccordingtoBellcore3.2.4

10 V/m (According to IEC 1000-4-3)Electromagnetic immunity,

2.2 and 2.4, and IEC 1000-4-2 level 4)

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