ADC DCX8001A, DCX1902A, DCXSMR1A User Manual

ADCP-75-192

Preliminary Issue D

October 2005

Digivance



CXD Multi-Band Distributed
Antenna System
Installation and Operation Manual

1343155 Rev 1

ADCP-75-192

Preliminary Issue D

October 2005

Digivance



CXD Multi-Band Distributed
Antenna System
Installation and Operation Manual

1343155 Rev 1

ADCP-75-192 • Issue D • October 2005 • Preface

COPYRIGHT

 2005, ADC Telecommunications, Inc.
All Rights Reserved
Printed in the U.S.A.

REVISION HISTORY

ISSUE DATE REASON FOR CHANGE

Issue D 10/2005 Original release

LIST OF CHANGES

The technical changes incorporated into this issue are listed below.

SECTION IDENTIFIER DESCRIPTION OF CHANGE

- - Original release

TRADEMARK INFORMATION

ADC and Digivance are registered trademarks of ADC Telecommunications, Inc.

DISCLAIMER OF LIABILITY

Contents herein are current as of the date of publication. ADC reserves the right to change the contents without prior notice. In no
event shall ADC be liable for any damages resulting from loss of data, loss of use, or loss of profits and ADC further disclaims
any and all liability for indirect, incidental, special, consequential or other similar damages. This disclaimer of liability applies
to all products, publications and services during and after the warranty period.

This publication may be verified at any time by contacting ADC’s Technical Assistance Center at 1-800-366-3891, extension 73476
(in U.S.A. or Canada) or 952-917-3476 (outside U.S.A. and Canada), or by e-mail to [e-mail].

Page ii

ADC Telecommunications, Inc.
P.O. Box 1101, Minneapolis, Minnesota 55440-1101
In U.S.A. and Canada: 1-800-366-3891
Outside U.S.A. and Canada: [phone]
Fax: [phone]

TABLE OF CONTENTS

Content Page

ABOUT THIS MANUAL .......................................................................v

RELATED PUBLICATIONS ..................................................................... v

ADMONISHMENTS ........................................................................ vi

GENERAL SAFETY PRECAUTIONS............................................................... vi

SAVE WORKING DISTANCES .................................................................. vii

COMPLIANCE STATEMENT .................................................................. viii

ACRONYMS AND ABBREVIATIONS ............................................................. viii

1 INTRODUCTION .................................................................... 1-1

2 DIGIVANCE CXD SYSTEM OVERVIEW ...................................................... 1-1

2.1 Basic Components ............................................................. 1-2

2.2 General Description ............................................................ 1-2

2.3 Local Service Interface.......................................................... 1-3

2.4 Remote NOC Interface .......................................................... 1-4

3 SYSTEM FUNCTIONS AND FEATURES...................................................... 1-4

3.1 Fiber Optic Transport ........................................................... 1-4

3.2 Control and Monitoring Software ................................................... 1-5

3.3 Fault Detection and Alarm Reporting................................................. 1-5

3.4 Powering ................................................................... 1-5

3.5 Equipment Mounting and Configuration............................................... 1-6

3.6 RAN Subsystem Assemblies ...................................................... 1-6

3.7 HUB Subsystem Assemblies ...................................................... 1-9

3.8 Communication Interfaces....................................................... 1-12

ADCP-75-192 • Issue D • October 2005 • Preface

FRONT MATTER

SECTION 1
OVERVIEW

SECTION 2

DESCRIPTION

1 INTRODUCTION .................................................................... 2-1

1.1 Digital Chassis ............................................................... 2-1

1.2 RF Chassis .................................................................. 2-3

1.3 Radio Access Node ............................................................ 2-4

2 ELEMENTS COMMON TO HUB AND RAN .................................................... 2-5

2.1 CPU....................................................................... 2-5

2.2 STF2 ...................................................................... 2-7

2.3 SIF ....................................................................... 2-9

3 RAN ........................................................................... 2-11

3.1 RDC ..................................................................... 2-11

3.2 RUC ..................................................................... 2-13

3.3 RF Assembly Module .......................................................... 2-14

 2005, ADC Telecommunications, Inc.

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ADCP-75-192 • Issue D • October 2005 • Preface

TABLE OF CONTENTS

Content Page

3.4 CompactPCI Power Supply ....................................................... 2-16

4 HUB............................................................................ 2-16

4.1 Full Band HDC (FBHDC) ........................................................ 2-16

4.2 Forward Simulcast Module, FSC ................................................... 2-18

4.3 Hub Upconverter Module, HUC .................................................... 2-20

4.4 Reverse Simulcast Module, RSC................................................... 2-21

4.5 Hub Reference Module, HRM ..................................................... 2-23

4.6 Ethernet Switch .............................................................. 2-25

4.7 BTS Interface Module, BIM....................................................... 2-25

4.8 Attenuator Shelf ............................................................. 2-26

4.9 Specifications ............................................................... 2-27

1 INTRODUCTION ..................................................................... 3-2

2 NETWORKING OVERVIEW .............................................................. 3-2

3 NODE IDENTIFICATION SCHEMES ......................................................... 3-3

4 IDENTIFICATION USING THE NETWORK IP RECEIVER/SENDER SYSTEM................................ 3-3

5 HUB EQUIPMENT IDENTIFICATIONS ....................................................... 3-3

6 ASSIGNING TENANTS ................................................................. 3-5

6.1 Understanding Tenant MIB Indexing.................................................. 3-5

6.2 BTS Connection MIB ............................................................ 3-6

6.3 Pathtrace Format .............................................................. 3-9

7 TENANT CONFIGURATION ............................................................. 3-12

7.1 Setting Protocol .............................................................. 3-12

7.2 Setting Channels ............................................................. 3-13

7.3 Setting Hub Measured Forward Gain ................................................ 3-13

7.4 Setting RAN Measured Forward Gain ................................................ 3-13

7.5 Setting FSC Gaunb ............................................................ 3-13

7.6 Setting RAN Forward Gain Offset ................................................... 3-13

7.7 Setting Reverse Gain........................................................... 3-14

7.8 Setting Forward Cable Loss ...................................................... 3-14

7.9 Setting Reverse Cable Loss ...................................................... 3-14

7.10 Using Tenant Reset............................................................ 3-14

7.11 Enabling FGC / RGC............................................................ 3-14

7.12 Using Tenant Mode ............................................................ 3-14

7.13 Enabling / Disabling Delay Compensation ............................................. 3-15

7.14 Setting Forward / Reverse Delay Skew ............................................... 3-15

7.15 Enabling / Disabling RAN slots .................................................... 3-15

7.16 Forward/Reverse Target Delay .................................................... 3-15

7.17 FSC Attenuator Offsets.......................................................... 3-16

7.18 Target Simulcast Degree ........................................................ 3-16

SECTION 3

NETWORK AND SYSTEM INSTALLATION AND SETUP

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 2005, ADC Telecommunications, Inc.

TABLE OF CONTENTS

Content Page

7.19 Module Attenuators ........................................................... 3-16

8 MANAGING THE TENANT OAM ADDRESS AND HOSTNAME TABLES ................................. 3-17

8.1 RAN Ordering ............................................................... 3-17

8.2 Bracketing of Lost RANs ........................................................ 3-17

8.3 Clearing of RANs ............................................................. 3-18

9 HUB NODE ACCESS/MANAGEMENT ...................................................... 3-18

9.1 Managing Hub Nodes .......................................................... 3-18

9.2 Identification using the Network IP Receiver/Sender ..................................... 3-18

9.3 Accessing Nodes Locally........................................................ 3-19

9.4 Accessing Nodes via TCP/IP ..................................................... 3-19

9.5 Using a Third Party Network Management System with Digivance CXD ......................... 3-20

10 CONFIGURING THE HUBMASTER NODE.................................................... 3-20

10.1 Utilizing The Configure-Hubmaster Script ............................................ 3-21

10.2 Using Dynamic Host Configuration Protocol with Digivance CXD ............................. 3-22

11 CONFIGURING THE HUB “SLAVE” AND RAN NODES ........................................... 3-24

11.1 Managing The Hub Node MIB..................................................... 3-24

11.2 Managing the RAN Node MIB..................................................... 3-26

ADCP-75-192 • Issue D • October 2005 • Preface

SECTION 4

BTS INTEGRATION

1 BTS VALIDATION ................................................................... 4-1

2 CHANNEL SELECTION ................................................................ 4-1

2.1 iDEN – SMR ................................................................. 4-1

2.2 CDMA Cellular – EIA/TIA-97....................................................... 4-2

2.3 GSM 850 ................................................................... 4-2

2.4 TDMA 800 .................................................................. 4-2

2.5 TDMA 1900.................................................................. 4-3

2.6 GSM 1900 .................................................................. 4-3

2.7 CDMA 1900 ................................................................. 4-3

3 PATH BALANCING ................................................................... 4-3

3.1 Forward Path Balancing ......................................................... 4-5

3.2 Reverse Path Balancing ......................................................... 4-7

3.3 RGC Changes ................................................................ 4-8

3.4 FGC Changes ................................................................ 4-8

3.5 Functional RAN Call Verification ................................................... 4-8

SECTION 5

BTS OPTIMIZATION

1 NEIGHBOR LIST UPDATES ............................................................. 5-1

2 BTS PARAMETER CHANGES ............................................................ 5-1

2.1 TDMA ..................................................................... 5-1

2.2 CDMA ..................................................................... 5-2

 2005, ADC Telecommunications, Inc.

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ADCP-75-192 • Issue D • October 2005 • Preface

TABLE OF CONTENTS

Content Page

2.3 iDEN....................................................................... 5-3

1 SOFTWARE RELEASE DELIVERABLE ....................................................... 6-1

2 RELEASE NOTES .................................................................... 6-1

3 UPGRADING EXISTING SYSTEM .......................................................... 6-1

3.1 Preliminary Steps.............................................................. 6-2

3.2 Upgrade Steps ................................................................ 6-2

3.3 Verification .................................................................. 6-3

3.4 Failed Upgrades ............................................................... 6-4

3.5 FPGA Updates ................................................................ 6-4

3.6 Backup/Restore ............................................................... 6-5

4 UPDATING SPARE CPU’S............................................................... 6-6

5 MIB EXTRACTION.................................................................... 6-7

SECTION 6

SOFTWARE UPDATES

SECTION 7

AUTONOMOUS SOFTWARE FUNCTIONALITY

1 INTRODUCTION ..................................................................... 7-1

2 FORWARD GAIN MANAGEMENT .......................................................... 7-1

3 REVERSE GAIN MANAGEMENT ........................................................... 7-2

4 FORWARD DELAY MANAGEMENT ......................................................... 7-2

5 REVERSE DELAY MANAGEMENT.......................................................... 7-2

6 FORWARD CONTINUITY ............................................................... 7-3

6.1 HUB ....................................................................... 7-3

6.2 RAN ....................................................................... 7-4

7 REVERSE CONTINUITY ................................................................ 7-4

7.1 Noise ...................................................................... 7-4

7.2 RDC Tone ................................................................... 7-5

7.3 HUC Tone ................................................................... 7-5

8 PA OVERPOWER PROTECTION ........................................................... 7-5

9 HUB OVERPOWER PROTECTION .......................................................... 7-6

SECTION 8

MIB STRUCTURE

1 MIB RELATIONSHIPS ................................................................. 8-1

2 HARDWARE RELATIONSHIPS ............................................................ 8-3

2.1 Hub/RAN Connection Relationships: ................................................. 8-3

2.2 Tennant Relationships ........................................................... 8-3

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 2005, ADC Telecommunications, Inc.

TABLE OF CONTENTS

Content Page

1 WARRANTY/SOFTWARE ............................................................... 9-1

2 SOFTWARE SERVICE AGREEMENT ........................................................ 9-1

3 REPAIR/EXCHANGE POLICY ............................................................ 9-1

4 REPAIR CHARGES ................................................................... 9-2

5 REPLACEMENT/SPARE PRODUCTS........................................................ 9-2

6 RETURNED MATERIAL ................................................................ 9-2

7 CUSTOMER INFORMATION AND ASSISTANCE ................................................ 9-3

ADCP-75-192 • Issue D • October 2005 • Preface

SECTION 9

GENERAL INFORMATION

 2005, ADC Telecommunications, Inc.

Page vii

ADCP-75-192 • Issue D • October 2005 • Preface

ABOUT THIS MANUAL

This installation and operation manual provides the following information:

• An overview of the Digivance CXD system.

• A description of the basic system components including the Digital Chassis, RF

Chassis, CPU, STF, HDC, HUC, SIF, FSC, RSC, cPCI Power Supplies, RAN, RDC,
RUC, and LPA.

• Installation procedures for the HUB assembly.

• Procedures for tuning-up the system and verifying that the system is functioning

properly.

• Procedures for maintaining the system including troubleshooting problems and
replacing faulty components.

• Product warranty, repair, return, and replacement information.

The procedures for installing the remote unit and for installing and using the EMS software
are provided in other publications which are referenced in the Related Publications section
and at appropriate points within this manual.

RELATED PUBLICATIONS

Listed below are related manuals and their publication numbers. Copies of these publications
can be ordered by contacting the ADC Technical Assistance Center at 1-800-366-3891,
extension 73476 (in U.S.A. or Canada) or 952-917-3476 (outside U.S.A. and Canada).

Title/Description ADCP Number

Digivance CXD Installation Manual 1001669

Provides instructions for installing the CXD HUB, RAN cabinet, modules,
LPA and optional battery in the remote unit cabinet and for installing and
connecting the fiber optic, coaxial, and AC power cables.

Digivance CXD/NXD EMS-SNMP Manager 1001516

Provides instructions installing the Digivance EMS and SNMP software and
isolating faults and troubleshooting system performance.

Digivance CXD/NXD Hardware Configuration Manual 1001542

Provides instructions for installing the Digivance CXD and NXD hardware.

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 2005, ADC Telecommunications, Inc.

ADCP-75-192 • Issue D • October 2005 • Preface

ADMONISHMENTS

Important safety admonishments are used throughout this manual to warn of possible hazards
to persons or equipment. An admonishment identifies a possible hazard and then explains what
may happen if the hazard is not avoided. The admonishments — in the form of Dangers,
Warnings, and Cautions — must be followed at all times. These warnings are flagged by use of
the triangular alert icon (seen below), and are listed in descending order of severity of injury or
damage and likelihood of occurrence.

Danger: Danger is used to indicate the presence of a hazard that will cause severe personal

injury, death, or substantial property damage if the hazard is not avoided.

Warning: Warning is used to indicate the presence of a hazard that can cause severe personal

injury, death, or substantial property damage if the hazard is not avoided.

Caution: Caution is used to indicate the presence of a hazard that will or can cause minor

personal injury or property damage if the hazard is not avoided.

GENERAL SAFETY PRECAUTIONS

Danger: This equipment uses a Class 1 Laser according to FDA/CDRH rules. Laser

radiation can seriously damage the retina of the eye. Do not look into the ends of any optical
fiber. Do not look directly into the optical transceiver of any digital unit or exposure to laser
radiation may result. An optical power meter should be used to verify active fibers. A
protective cap or hood MUST be immediately placed over any radiating transceiver or optical
fiber connector to avoid the potential of dangerous amounts of radiation exposure. This
practice also prevents dirt particles from entering the adapter or connector.

Danger: Do not look into the ends of any optical fiber. Exposure to laser radiation may

result. Do not assume laser power is turned-off or the fiber is disconnected at the other end.

Danger: Wet conditions increase the potential for receiving an electrical shock when

installing or using electrically-powered equipment. To prevent electrical shock, never install
or use electrical equipment in a wet location or during a lightning storm.

Warning: The Digital Chassis and other accessory components are powered by 48 VDC

power which is supplied over customer-provided wiring. To prevent electrical shock when
installing or modifying the power wiring, disconnect the wiring at the power source before
working with uninsulated wires or terminals.

 2005, ADC Telecommunications, Inc.

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ADCP-75-192 • Issue D • October 2005 • Preface

Caution This system is a RF Transmitter and continuously emits RF energy. Maintain 3 foot

minimum clearance from the antenna while the system is operating. Wherever possible, shut
down the RAN before servicing the antenna.

Caution: Always allow sufficient fiber length to permit routing of patch cords and pigtails

without severe bends. Fiber optic patch cords or pigtails may be permanently damaged if bent
or curved to a radius of less than 2 inches (50 mm).

Caution: Exterior surface of the RAN may be hot. Use caution during servicing.

Caution: Hazardous voltages are present. The inverter located in the HUB FIR converts 12

VDC to 120 VAC. Use caution when servicing the equipment.

SAFE WORKING DISTANCES

The Digivance CXD antenna, which is mounted on top of a pole, radiates radio frequency
energy.

For the Occupational Worker, safe working distance from the antenna depends on the workers
location with respect to the antenna and the number of wireless service providers being
serviced by that antenna.

Emission limits are from OET Bulletin 65 Edition 97-01, Table 1 A.

RF fields are computed using equation 3 from the same document.

RF fields below antenna are computed using equation 10 with F=0.3.

Combining the PCS and cell bands was done in accordance with OET Bulletin 65, page 35
(last paragraph).

WORKER LOCATION BELOW ANTENNA * BESIDE ANTENNA

One Band 10.2” 32.3”

Two Bands 14.3” 45.3”

Three Bands

* “Below” is defined as a 100 degree cone, 50 degrees each side of the
utility pole, with the tip of the cone at the base of the antenna.

Should the criteria for safe working distance not be met, the power amplifiers must be turned
off at the site where work is to be performed prior to commencing work.

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 2005, ADC Telecommunications, Inc.

COMPLIANCE STATEMENT

Each respective SMR, Cellular, and PCS system in this CXD platform is singularly FCC and
IC approved. Information in this manual explains applicable portions of these systems.

FCC: This Digivance CXD complies with the applicable sections of Title 47 CFR Part 15, 22,
24 and 90.

The Digivance CXD Hub has been tested and found to comply with the limits for a Class A
digital device, pursuant to Part 15 of the FCC rules. These limits are designed to provide
reasonable protection against harmful interference when the equipment is operated in a
commercial environment. This equipment generates, uses and can radiate radio frequency
energy and, if not installed and used in accordance with the instruction manual, may cause
harmful interference to radio communications.

Changes and Modifications not expressly approved by the manufacturer or registrant of this
equipment can void your authority to operate this equipment under Federal Communications
Commissions rules.

ADCP-75-192 • Issue D • October 2005 • Preface

In order to maintain compliance with FCC regulations shielded cables must be used with this
equipment. Operation with non-approved equipment or unshielded cables is likely to result in
interference to radio & television reception.

ETL: This equipment complies with ANSI/UL 60950-1 Information Technology Equipment.
This equipment provides the degree of protection specified by IP24 as defined in IEC
Publication 529. Ethernet signals not for outside plant use.

FDA/CDRH: This equipment uses a Class 1 LASER according to FDA/CDRH Rules. This
product conforms to all applicable standards of 21 CFR Part 1040.

IC: This equipment complies with the applicable sections of RSS-131. The term “IC:” before
the radio certification number only signifies that Industry Canada Technical Specifications
were met.

ACRONYMS AND ABBREVIATIONS

The acronyms and abbreviations used in this manual are detailed in the following list:

AC Alternating Current
ASCII American Standard Code for Information Interchange
Att Attenuation
AWG American Wire Gauge
BER Bit Error Rate
BTS Base Transceiver Station
C Centigrade
CAN Controller Area Network
CDRH Center for Devices and Radiological Health

 2005, ADC Telecommunications, Inc.

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ADCP-75-192 • Issue D • October 2005 • Preface

CD-ROM Compact Disk Read Only Memory
COM Common
Config Configuration
CUL Canadian Underwriters Laboratories
DAS Distributed Antenna System
DC Direct Current
DCE Data Communications Equipment
Div Diversity
DTE Data Terminal Equipment
EIA Electronic Industries Association
EMS Element Management System
ESD Electrostatic Discharge
F Fahrenheit
FCC Federal Communications Commission
FDA Food and Drug Administration
FSO Free Space Optics
Fwd Forward
GFC Ground Fault Circuit Interrupter
GUI Graphical User Interface
IC Industry Canada
LED Light Emitting Diode
LPA Linear Power Amplifier
MHz Mega Hertz
MI Maintenance Interface
MPE Maximum Permissible Exposure
MTBF Mean Time Between Failure
NC Normally Closed
NEM Network Element Manager
NO Normally Open
NOC Network Operations Center
NPT National Pipe Tapered
OSP Outside Plant
PA Power Amplifier
PC Personal Computer
PCS Personal Communications System
Prg Program
Pwr Power
Re Reverse
RF Radio Frequency
RIM Radio Interface Module
RMA Return Material Authorization
RU Remote Unit

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 2005, ADC Telecommunications, Inc.

ADCP-75-192 • Issue D • October 2005 • Preface

RX Receive or Receiver
SMR Specialized Mobile Radio
STM Spectrum Transport Module
TX Transmit or Transmitter
UL Underwriters Laboratories
VAC Volts Alternating Current
VDC Volts Direct Current
VSWR Voltage Standing Wave Ratio
WECO Western Electric Company
WDM Wave Division Multiplexer

Common Items (HUB or RAN)

CPU Central Processing Unit
NMS Network Management System
BTS Base TRANsceiver Station
BIF Backplane Interface
STF System Interface
SIF Synchronous Interface (Fiber Interface also referred to as WBOT)
MAC Media Access Control
RAN Radio Access Node
Node Any CPU in the Digivance CXD system
WBDOT Wide Band Optical Transport (see SIF)

HUB Specific

W/HDC Wideband Hub Down Converter
FSC Forward Simulcast Card
RSC Reverse Simulcast Card
HUC Hub Up Converter
BIM Base Station Interface Module
HRM Hub Reference Module
EHUB Ethernet Hub
DNS Domain Name Service
DHCP Dynamic Host Configuration Protocol
PDU Power Distribution Unit

RAN Specific

RUC RAN Up Converter (Dual)
PA800 Power Amplifier (800 MHz)
PA1900 Power Amplifier (1900 MHz)
PASMR Power Amplifier (SMR)
P/MCPLR PCS Multicoupler

 2005, ADC Telecommunications, Inc.

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ADCP-75-192 • Issue D • October 2005 • Preface

C/MCPLR Cellular Multicoupler
RDC RAN Down Converter
PQP PCS Quadplexer
CTP Cellular Triplexer
CDP Cellular Diplexer
IB Internal Battery
EB External Battery
RPS RAN CompactPCI Power Supply
LVD Low Voltage Disconnect
RIC RF Assembly Interface Controller
ANT Multiband Antenna
RAN RAN, Tenant 1 – 3
APEC AC Power Entry Card
DPEC DC Power Entry Card
CPCIP SCPCI Power Supply

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 2005, ADC Telecommunications, Inc.

SECTION 1: OVERVIEW

Content Page

1 INTRODUCTION .................................................................... 1-1

DIGIVANCE CXD SYSTEM OVERVIEW ...................................................... 1-1

2

2.1 Basic Components ............................................................. 1-2

2.2 General Description ............................................................ 1-2

2.3 Local Service Interface.......................................................... 1-3

2.4 Remote NOC Interface .......................................................... 1-4

3 SYSTEM FUNCTIONS AND FEATURES...................................................... 1-4

3.1 Fiber Optic Transport ........................................................... 1-4

3.2 Control and Monitoring Software ................................................... 1-5

3.3 Fault Detection and Alarm Reporting................................................. 1-5

3.4 Powering ................................................................... 1-5

3.5 Equipment Mounting and Configuration............................................... 1-6

3.6 RAN Subsystem Assemblies ...................................................... 1-6

3.7 HUB Subsystem Assemblies ...................................................... 1-9

3.8 Communication Interfaces....................................................... 1-12

ADCP-75-192 • Issue D • October 2005 • Section 1: Overview

1 INTRODUCTION

This section provides basic description, application, and configuration information about the
Digivance CXD. Throughout this publication, all items referenced as “accessory items” are
not furnished with the basic product and must be purchased separately.

2 DIGIVANCE CXD SYSTEM OVERVIEW

The Digivance CXD is an RF signal transport system that provides long-range RF coverage in
areas where it is impractical to place a Base Transceiver Station (BTS) at the antenna site.
Digivance CXD is a multi-frequency, multi-protocol distributed antenna system, providing
microcellular SMR, Cellular and PCS coverage via a distributed RF access system. High real
estate costs and community restrictions on tower and equipment locations often make it
difficult to install the BTS at the same location as the antenna. The Digivance CXD is
designed to overcome equipment placement problems by allowing base stations to be hubbed
at a central location while placing remote antennas at optimum locations with minimal real
estate requirements. The Digivance CXD Hub is connected via high speed datalinks to Radio
Access Nodes (RAN’s) distributed over a geographical area of interest. With the Digivance
CXD, RF signals can be transported to one or more remote locations to expand coverage into
areas not receiving service or to extend coverage into difficult to reach areas such as canyons,
tunnels, or underground roadways.

 2005, ADC Telecommunications, Inc.

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ADCP-75-192 • Issue D • October 2005 • Section 1: Overview

2.1 Basic Components

Figure 1-1 illustrates a Digivance CXD system with RAN’s distributed over a desired
geographical area, connected back to a group of Wireless Service Provider (WSP) base stations
at a Hub locale. The illustration shows utility pole mounted RAN’s, with pole top antennas.
The Digivance CXD Hub Equipment is comprised of Digital and RF cPCI chassis’ in a 19”
rack assembly. The Digivance CXD Hub equipment provides the interconnection at the RF
layer between the WSP base station sector(s) and the Digivance CXD Radio Access Nodes.

SMR A

BTS

SMR B

BTS

CXD
Hub

CXD

RAN 1

CXD

RAN 2

CXD

RAN 3

CXD

RAN 4

CXD

RAN 5

CXD

RAN 6

CXD

RAN 7

CXD

RAN 8

20799-A

SMRA/

SMRB

SMRA/

SMRB

SMRA/

SMRB

SMRA/

SMRB

SMRA/

SMRB

SMRA/

SMRB

SMRA/

SMRB

SMRA/

SMRB

2.2 General Description

The Hub is co-located with the BTS and interfaces directly with the BTS over coaxial cables.
In the forward path, the Full Band Hub Down Converter (FBHDC) receives RF signals from
the BTS and down converts the signals to IF. The Forward Simulcast Card (FSC) digitizes the
RF signals and passes digital IF (DIF) signals into the Sonet Interface (SIF) that converts them
to digital optical signals for transport to the RAN. At the RAN, another SIF card receives the
digital optical signal, passes DIF to the Remote Up Converter (RUC) and inputs signals into a
RF Assembly (RFA). The RF signals are duplexed and combined with other RF signals using a
combination of either,diplexers or triplexers and then fed into a multi-band antenna.

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 2005, ADC Telecommunications, Inc.

Figure 1-1. Digivance CXD Architectural Summary Diagram

ADCP-75-192 • Issue D • October 2005 • Section 1: Overview

In the reverse path, the antenna receives RF signals from a mobile and sends those signals into
the RFA which contains a diplexer and Low Noise Amplifier. The output of the RFA is
connected the RAN Down Converter (RDC) which down converts the RF back to IF and
digitizes the signals. The DIF signals are passed to the SIF, which sends digital optical signals
from the RAN to the HUB SIF. The Hub SIF combines with Dif signals from the other RANs
that are in that simulcast cluster through the Reverse Simulcast Card (RSC). The Hub Up
Converter (HUC) takes the RSC output and translates the digital optical signals back to RF
signals for transmission to the BTS.

Figure 1-2 shows the RF signal path through the Digivance CXD system. In the forward
direction, the signal starts from the base station sector on the left and moves to the right. In the
reverse direction, the RF path starts at the antenna and then flows from the RAN to the Hub
and to the base station sector receiver(s).

CXD Hub CXD RAN

800 MHz

BTS

900 MHz

BTS

HDC FSC

HUC RSC

HDC FSC

HUC RSC

STF

CPU

Figure 1-2. Digivance CXD Block Diagram

SIF SIF

RDC

RUC

RDC

STF

CPU

RFA
800/

900

20800-A

800/900

DUPLEXED

OUTPUT

2.3 Local Service Interface

Local communications with the Digivance CXD system is supported through an IP interface
capability. The Digital Chassis’ and RAN Chassis’ both contain CPU modules with Ethernet
ports that act as nodes in an Ethernet-based network similar to that of a computer local area
network (LAN). Each RAN in the Digivance network contains one CPU, while the Hub
contains multiple CPUs with the Digital Chassis units depending on the number of tenant
sectors supported in the system.

 2005, ADC Telecommunications, Inc.

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ADCP-75-192 • Issue D • October 2005 • Section 1: Overview

The Digivance CXD Element Management System is a Web based system that provides the
various control and monitoring functions required for local management of each CXD system.
The user interface into the EMS is a PC-type laptop computer loaded with a standard Web
browser. The EMS is connected to the Master CPU through an Ethernet connection. Operation
is effected through the EMS Graphical User Interface (GUI). The GUI consists of a series of
screens from which the user selects the desired option or function. Ethernet ports are available
at the Hub and RAN CPU for connecting the EMS computer at either location.

For management and operation by a customer supplied Network Management Systems (NMS)
the Digivance CXD has imbedded in software a Simple Network Management Protocol
(SNMP) Agent and ADC Management Information Bases (MIBs). Local communications with
the Digivance CXD SNMP Agent system is supported through the IP interface at the Hub or
RAN. All CPUs in the Digivance network support the SNMP to provide NMS monitoring and
control access to the Digivance system. The NMS sends SNMP SET and GET messages to the
various nodes in the Digivance CXD/NXD network in order to access MIB’s, which define the
interface to the Digivance system.

2.4 Remote NOC Interface

Remote communications between a Network Operations Center (NOC) and a networked
grouping of multiple Digivance CXD systems is also supported by the Digivance CXD SNMP
Agent. The primary component of the remote NOC interface is a PC-type desktop computer
loaded with a customer supplied Network Management System (NMS). A NMS operating at a
customer NOC is able to discover and manage multiple Hub and RAN sites independently or
as a distributed network.

3 SYSTEM FUNCTIONS AND FEATURES

This section describes various system level functions and features of the Digivance CXD.

3.1 Fiber Optic Transport

The optical signal of a Digivance CXD is digital, the input and output RF signal levels at the
HUB SIF or the RAN SIF are not dependent on the level of the optical signal or the length of
the optical fiber. The maximum length of the optical fibers is dependent on the loss
specifications of the optical fiber and the losses imposed by the various connectors and splices.
The system provides an optical budget of 10 dB (typical) when used with 9/125 single-mode
fiber, or 22 dB with extended optics.

The optical wavelengths used in the system are 1310 nm for the forward path and 1310 nm for
the reverse path. Different wavelengths may be used for the forward and reverse paths
allowing for a pair of bi-directional wavelength division multiplexers (WDM) or course
wavelength division multiplexing (CWDM) to be used in applications where it is desirable to
combine the forward path and reverse path optical signals on a single optical fiber. One WDM
or CWDM multiplexer/demultiplxer module may be mounted with the Hub and the other
mounted with the RAN. The WDM or CWDM passive multiplexers are available as accessory
items.

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3.2 Control and Monitoring Software

The Digivance CXD EMS or customer supplied NMS using the Digivance CXD SNMP Agent
is used to provision and configure the system for operation. This includes initializing the
system, setting up the Hub and RAN element identification schemes, tenant processing, setting
alarm thresholds, and setting forward and reverse path RF gain adjustments. The EMS or NMS
software is also used to get alarm messages (individual or summary), data measurements, or to
upgrade the Hub/RAN system software. All control and monitor functions can be effected
using either the EMS or through a NMS.

3.3 Fault Detection and Alarm Reporting

LED indicators are provided on each of the respective modules populating the Hub Digital
Chassis, RF Chassis and RAN Chassis to indicate if the system is normal or if a fault is
detected. In addition, a dry contact alarm interface can be provided as an accessory item that is
managed by the EMS software with normally open and normally closed alarm contacts for
connection to a customer-provided external alarm system. All Hub and RAN alarms can be
accessed through the SNMP manager or the EMS software GUI.

ADCP-75-192 • Issue D • October 2005 • Section 1: Overview

3.4 Powering

The Hub Digital and RF Chassis are powered by ±48 Vdc and must be hard-wired to a local
office battery power source through a fuse panel.

The RAN is powered by 120 or 240 Vac (50 or 60 Hz) and must be hard-wired to the AC
power source through a breaker box. The RAN is pre-wired for 120 VAC operation but can
be converted to 240 VAC operation if required. On an optional basis, a back-up battery kit is
available for the RAN. The battery-backup system powers the RAN if the AC power source is
disconnected or fails.

3.4.1 HUB Power On/Off

Hub Power On

Hub CompactPCI Chassis Power On

• Power to the Hub rack is enabled using the power system supplied by the customer
located in the Hub shelter. Power to the Hub must be supplied through a fuse panel
such as the 20 position ADC PowerWorx power distribution panel (available
separately). The power circuit for each active element of the system must be protected
with a 3 Amp GMT fuse.

• Identify the power supply module for the chassis to be powered on

• Insert the power supply module(s) in the chassis

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Hub Power Off

• Power to the Hub racks is disabled at the power system supplied by the customer.

Hub CompactPCI Chassis Power Off

• Identify the power supply module for the chassis to be powered off

• Extract the power supply module(s) from the chassis

3.4.2 RAN Power on/off

RAN Equipment Power On

• Plug the AC line cord into the receptacle located between the cPCI power supplies.

• Turn power on at the customer supplied load center located on the utility pole.

RAN Equipment Power Off

• Turn the circuit breaker off at the customer supplied load center located on the utility
pole.

• Unplug the AC line cord from the receptacle located between the cPCI power supplies.

3.5 Equipment Mounting and Configuration

The Digital and RF Chassis are designed for mounting in a non-condensing indoor
environment such as inside a wiring closet or within an environmentally-controlled cabinet.
The Hub equipment are intended for rack-mount applications and may mounted in either a 19­or 23-inch WECO or EIA equipment rack, usually within 20 feet of the BTS. The RAN is
designed for mounting in either an indoor or outdoor environment.

3.6 RAN Subsystem Assemblies

The Digivance CXD RAN consists of a cabinet, RAN Chassis and backplane, a Central
Processing Unit (CPU), a System Interface (STF), a Sonet Interface (SIF), RAN Down
Converter (RDC), RAN Up Converter (RUC), AC Power Entry Card (APEC) or DC Power
Entry Card (DPEC), and the RF Assembly consisting of Power Amplifiers, duplexers, and RF
Assembly Interface Controller (RIC). Slots within the RAN Chassis are designated for
particular modules.

The Digivance CXD cabinet houses the RAN components and can be mounted from a flat­vertical surface or from a utility pole using an accessory pole-mount kit. Within the enclosure
space is provided for storing short lengths of excess fiber slack.

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3.6.1 Central Processing Unit (CPU)

The RAN has a cPCI based single-board computer with a Central Processing Unit (CPU)
operating LINUX. RAN CPU:

1. Manages all RAN hardware including RF and Digital equipment

2. Manages gain & delays

3. Monitors signal presence and quality

3.6.2 System Interface (STF)

The System Interface (STF) module provides the ability to communicate between the CPU and
other modules (RDC, RUC, RIC) using four I2C busses. The STF also contains the GPS
module.

3.6.3 Sonet Interface (SIF)

The Sonet Interface module provides the fiber interface between the Hub and RAN’s. This
interface includes:

1. Digitized RF Signal information

2. 10 BaseT Ethernet for command and control between Hub and the RAN’s.

3.6.4 RAN Down Converter (RDC)

The RDC is a dual-diversity wideband receiver that converts PCS, Cellular and SMR800
signals to digitized IF. It also includes a CW test tone used in reverse continuity testing.

3.6.5 RAN Up Converter (RUC)

The RAN Up Converter converts digitized IF into SMR frequency bands. Each RUC supports
two simultaneous bands via wideband outputs. The RUC also provides clocking for its
neighboring RDC’s as well as extends an I2C interface to its respective RFA.

3.6.6 RAN Chassis & Backplane

The RAN chassis is a six slot CompactPCI unit. The backplane supports the basic CompactPCI
functions and has been extended to allow the routing of DIF, reference clocks and I2C signals
between CompactPCI modules.

3.6.7 AC Power Entry Card (APEC)

The APEC distributes AC power to the cPCI power supplies in the RAN. Its input range is
100 to 260 VAC. It has a built in EMI filter, fuse holder and off/on switch.

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3.6.8 DC Power Entry Card (DPEC)

The DPEC is used to distribute DC power to the cPCI power supplies in the RAN and is used
when the battery backup option is used.

3.6.9 CompactPCI RAN Power Supply (RPS)

The CompactPCI (cPCI) Power Supplies provide +/-12V, 5V and 3.3 V DC power to the cPCI
backplane for use by the RAN modules. These units are hot swappable and can be redundant
when used in pairs.

3.6.10 RF Assembly

The RF Assembly (RFA) consists of the Power Amplifier (PA), A/C Power Supply (ies), Fans,
duplexers and RF assembly Interface Controller (RIC). the dual-band 800/900 RF assembly
does both SMR800 and 900 bands.

3.6.11 Fuses

There are fuses in the APEC and DPEC that protect the RAN electronics:

3.6.12 Internal Battery backup (BAT1) 1 Hour

The Digivance CXD has an option for an internal battery back up is located inside the CXD
RAN cabinet. It is positioned in the space of a RFA and is used to provide short duration
power backup to the RAN. A cabinet using the internal battery backup option can only support
one single- or dual-band RFA. .

3.6.13 Extended Internal Battery Backup (BAT2) 2 Hour

The Digivance CXD has an option for an extended internal battery backup option through use
of a custom cabinet with an auxiliary space for the battery module. A cabinet using the
extended backup option can support two single- or dual-RFA’s and can provide up to two
hours of battery backup time.

3.6.14 Antenna (ANT)

The Digivance CXD RAN may be deployed and installed on a power distribution pole, on a
building wall, on a water tank, or on a rooftop, or within a building environment. ADC can
supply a number of antenna options for the Digivance CXD as accessory items. Antenna(s)
may be mounted on a facade, supporting member, wall or rooftop pedestal mount. Installations
may use conventional omni-directional or directional antenna, in either a sector or quasi-omni
antenna configuration, depending on the site’s coverage objective and design. When designing
a network, the azimuth and elevation beamwidths would be selected by the RF designer to

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support the desired coverage objectives. Proper antenna selection and the mounting installation
is the responsibility of the customer.

When using customer supplied antenna, they should meet or exceed the following antenna
specifications:

• VSWR (all bands): 1.5:1 typ, 1.65:1 max

• Maximum power input: 200W (average) 1000W (peak)

• Passive Intermodulation Distortion: -153dBc (maximum)

3.7 HUB Subsystem Assemblies

The Hub is comprised of a single rack assembly with two chassis types. The Hub rack houses
the following modules:

1. The Digital Chassis houses the following modules:

• CPU (Master or Slave)

ADCP-75-192 • Issue D • October 2005 • Section 1: Overview

• System Interface card (STF2)

• Sonet Interface (SIF)

• Reverse Simulcast card (RSC)

• CompactPCI Power Supply (CPS)

2. The RF Chassis houses the following modules;

• Hub DownConverter card (HDC)

• Hub UpConverter card (HUC)

• Forward Simulcast card (FSC)

• CompactPCI Power Supply (CPS)

3. Attenuator Rack which houses up to twelve (12) attenuators.

4. Base Station Interface Module (BIM). The BIM is a multi-port transition module used to

interface with the Tenant’s base station sector. The BIM accepts either duplexed or non­duplexed RF from the base station sector and provides the Digivance CXD-Hub RF
section separate transmit and receive paths.

5. Ethernet hub with twenty four (24) ports.

• 48 VDC Power Distribution Unit.

6. Hub Reference Module.

The Attenuator Rack, BIM, Ethernet Hub and Reference Module are sold as accessory items.
The functionality of each of these card assemblies is defined in the following section.

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3.7.1 Digital CompactPCI Chassis & Backplane

The CompactPCI Digital Chassis houses cooling fans, the CPU, System Interface Module,
Sonet Interface Module, Reverse Simulcast Module and power supplies. The backplane
provides the distribution for clock, communication, control data and timing.

3.7.2 RF CompactPCI Chassis & Backplane

The CompactPCI RF Chassis houses the cooling fans, RF transceiver modules, HUC, HDC,
FSC Modules and the power supplies. The backplane provides the distribution for clock,
communication and control data and timing. RF and digital RF signals are interconnected
between modules using the appropriate cabling.

3.7.3 Central Processing Unit (CPU)

The Hub CPU is a cPCI single board computer with hot swap capabilities. The Operating
System of the Digivance CXD uses LINUX. A Hub CPU performs the following functions:

1. Manages a subset of Hub hardware including RF and Digital equipment

2. Manages RANs connected to its Hub managed hardware.

One of the Hub CPUs must be configured as the Master Hub processor. In addition to its
regular Hub CPU duties it is responsible for:

1. Reporting Tenant status

2. Controlling all Tenant specific functions

3. Synchronizing the date for all attached nodes

4. Managing gain & delays

5. Monitoring signal presence and quality

6. Managing network services such as DHCP and DNS

There is one CPU per digital chassis.

3.7.4 System Interface (STF2)

The System Interface (STF2) module, using four I2C busses, provides the ability to
communicate between the CPU and other modules. The STF2 also communicates with the
GPS modules found both in the Master Hub Reference Module and internal to the RAN STF2.
In the HUB, the STF2 communicates with chassis fans for monitoring purposes.

The four I2C busses are accessible via the CompactPCI backplane or via front panel
connectors.

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ADCP-75-192 • Issue D • October 2005 • Section 1: Overview

3.7.5 Sonet Interface (SIF)

The Sonet Interface module provides the fiber interface between the Hub and RAN’s. This
interface includes:

1. Digitized RF Signal information

2. 10BaseT Ethernet for command and control between Hub and the RAN’s.

3.7.6 Hub Down Converter (HDC)

The HDC down converts the forward RF carrier to an intermediate frequency (IF) that can be
digitized. Each HDC can support up to four separate RF carriers. A second HDC may be
installed to support 5 - 8 RF channels.

3.7.7 Forward Simulcast Card (FSC)

The Forward Simulcast card converts the IF signals from the HDC to Digitized IF(DIF)
format. There are eight (8) separate analog-to-digital conversion circuits on one (1) FSC.

3.7.8 Reverse Simulcast Card (RSC)

The RSC sums the Digital IF (DIF) from up to eight (8) RAN’s into a single DIF signal that is
sent to the appropriate HUC for up conversion to RF.

3.7.9 Hub Up Converter (HUC)

The HUC accepts two (2) Digital IF (DIF) signals from a SIF or RSC. The two (2) DIF signals
are converted from digital-to-analog and provided as two (2) separate RF signals (primary and
diversity) to the BIM and BTS.

3.7.10 Base Station Interface Module (BIM)

The Base Station Interface Module provides the following BTS interface functionality:

1. Interface to a low power forward BTS RF path

2. Handles duplexed and non-duplexed signals

3. Gain adjust for optional reverse path configurations

The BIM is controlled via an I2C connection from its respective CPU.

3.7.11 Hub Reference Module (HRM)

The HRM generates the RF reference and fiber clocking for distribution within the Hub. In
addition, it contains a GPS that generates a 1 PPS (one pulse per second) for distribution to the
Digital Chassis modules for delay management.

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3.7.12 Ethernet Hub

Each Hub rack is equipped with a 24 port Ethernet Hub, at the top of the rack, below the HRM.
It is powered by 120 VAC. An optional –48 VDC can be chosen. The Ethernet Hub is used to
connect RAN CPU’s (through Hub SIF’s) and Hub CPU’s to and existing LAN/WAN and to
each other.

3.8 Communication Interfaces

3.8.1 I2C

I2C is a bi-directional serial bus that provides a simple, efficient method of data exchange
between devices. It is used for the board level communications protocol.

I2C interfaces are used for communication to the following modules:

1. HUB - HDC, FSC, HUC, BIM, PSI

2. RAN - RDC, RUC, PIC, P/MCPLR, C/MCPLR

3.8.2 Network Interface

The Hub Master CPU’s are able to communicate to any other CPU in the Digivance CXD
system (Hub and RAN) over an Ethernet LAN using the IP based Simple Network
Management Protocol (SNMP). Ethernet connections are aggregated with each rack via an
Ethernet Hub. Inter-rack communication is done by connecting the Ethernet Hubs between
racks.

Each SIF has a 10BaseT Ethernet connection. The Hub Master CPUs are able to communicate
with the RAN’s over this Ethernet connection.

3.8.3 SNMP

The ADC Digivance Simple Network Management Protocol (SNMP) Agent and the ADC
Management Information Bases (MIBs) provide the interface into the Digivance CXD system.
A MIB is a database where scalar or tabular data “objects” known to both agent and the
manager are defined and stored. The MIBs define a set of parameters with specific
characteristics, including name, data type, value range, description, and read-write
accessibility. An SNMP manager sends SNMP SET and GET messages to the various nodes in
the Digivance CXD network in order to access MIB’s.

The MIBs are compiled into a SNMP Manager as well as the Digivance CXD SNMP Agent so
that both manager and agent software can communicate. Agent and manager each have their
own copy of the MIB. Using the SNMP interface, the manager issues GET and SET
commands for object attributes stored in the agent MIB. In addition, the manager receives
unsolicited object attributes in the form of TRAP notices sent by the agent. The Digivance
software has the ability to send SNMP TRAPS when certain MIB conditions are detected.
reducing the amount of polling via SNMP GET requests from the SNMP manager.

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SECTION 2: DESCRIPTION

Content Page

1 INTRODUCTION .................................................................... 2-1

1.1 Digital Chassis ............................................................... 2-1

1.2 RF Chassis.................................................................. 2-3

1.3 Radio Access Node (RAN) ....................................................... 2-4

2 ELEMENTS COMMON TO HUB AND RAN .................................................... 2-5

2.1 CPU ...................................................................... 2-5

2.2 STF2 ...................................................................... 2-7

2.3 SIF ....................................................................... 2-9

3 RAN ........................................................................... 2-11

3.1 RDC ..................................................................... 2-11

3.2 RUC ..................................................................... 2-13

3.3 RF Assembly Module .......................................................... 2-14

3.4 CompactPCI Power Supply ...................................................... 2-16

4 HUB ........................................................................... 2-16

4.1 Full Band HDC (FBHDC) ....................................................... 2-16

4.2 Forward Simulcast Module, FSC .................................................. 2-18

4.3 Hub Upconverter Module, HUC.................................................... 2-20

4.4 Reverse Simulcast Module, RSC .................................................. 2-21

4.5 Hub Reference Module, HRM .................................................... 2-23

4.6 Ethernet Switch.............................................................. 2-25

4.7 BTS Interface Module, BIM ...................................................... 2-25

4.8 Attenuator Shelf ............................................................. 2-26

4.9 Specifications ............................................................... 2-27

ADCP-75-192 • Issue D • October 2005 • Section 2: Description

1 INTRODUCTION

This section describes the basic components of the Digivance CXD system including the Hub
and Remote Access Node (RAN) equipment. The Hub equipment consists of the Central
Processing Unit (CPU), the System Interface (STF), the Sonet Interface (SIF), the Full Band
Hub Down Converter (FBHDC), the Hub Up Converter (HUC), the Forward Simulcast Card
(FSC) and the Reverse Simulcast Card (RSC).

The RAN is an assembly that consists of the RAN equipment including the RAN Chassis,
CPU, STF, RAN Down Converter (RDC), RAN Up Converter (RUC), and RF Assembly
(RFA).

1.1 Digital Chassis

The Digital Chassis, shown in Figure 2-1, is a rack-mounted chassis (known as the digital
shelf) capable of housing 8 industry standard cPCI circuit card modules; one CPU module, one
System Interface module (STF), and Six RSC/SIF digital modules.

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ADCP-75-192 • Issue D • October 2005 • Section 2: Description

The following is specified per the Digivance CXD system configuration:

• Sonet Interface Module

Figure 2-1. Digital Chassis

• Systems Interface Module

• Reverse Simulcast Module

• Master Processor Module

• Slave Processor Module

The quantity for each module is determined by the tenant network configuration. Note that
each card slot is not equivalent, thus requiring certain modules to be specifically located within
the chassis. Labeling is provided on the chassis for correct installation of the modules.

Selection of the modules for this chassis and the Digital Chassis itself should be done in
accordance with Table 2-1.

Table 2-1. Digital Chassis Module Selection Rules

ITEM NOTES

1 per RAN, plus one for each additional pair of

Sonet Interface (SIF)

System Interface Module (STF) 1 STF per 2 chassis (digital and/or RF)

Reverse Simulcast Module (RSC)

Master Processor Module (CPU)

Slave Processor Module (CPU) t

tenants in each RAN (beyond the first pair).

One per tenant per sector per; RANs 1-4, 5-7,8. For
example: with (8) RANs there are (3) RSCs

One for every grouping of six (or less) SIF & RSC
modules. Master is the first CPU

One for every grouping of six (or less) SIF & RSC
modules. Slave is any additional CPUs

Digital Chassis (Digital Shelf) Holds up to 8 digital chassis modules

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