ADC DIS080AB Users Manual

Preliminary

Preliminary Issue 3C

Digivance®Indoor Coverage Solution
800 MHz Single- or Multi-Mode Fiber
System Installation and Operation Manual

ADCP-75-130

August 2006

1371998 Rev 1

ADCP-75-130

Preliminary Issue 3C

August 2006

Digivance® Indoor Coverage Solution
800 MHz Single or Multi-Mode Fiber
System Installation and Operation Manual

1371998 Rev 1

ADCP-75-130 • Issue 3C • August 2006 • Preface

COPYRIGHT

© 2006, ADC Telecommunications, Inc.
All Rights Reserved

REVISION HISTORY

ISSUE DATE REASON FOR CHANGE

Issue 1 03/2002 Original

Issue 2 09/2002 Updated to include new IC and UL certification statements, revised panel-type antenna designs, and

Issue 3 03/2004 Deleted all references to the LIU, inserted new references to the HPCP, added air quality specifications

Issue 3C 08/2006 Updated to include new specifications for the RF output signal level at the DRU.

new troubleshooting charts.

and warnings, and updated phone numbers and email addresses.

TRADEMARK INFORMATION

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

LC is a trademark of Lucent Technologies Inc.

Telcordia is a registered trademark of Telcordia Technologies, Inc.

TORX is a registered trademark of Textron, 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 1-952-917-3476 (outside U.S.A. and Canada), or by e-mail to [e-mail].

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]

Page ii

TABLE OF CONTENTS

Content Page

1 SYSTEM FUNCTIONAL OVERVIEW ..........................................................1

1.1 Basic System Components ......................................................... 1

1.2 Interface With BTS...............................................................1

1.3 Interface With Cellular Phones ...................................................... 1

1.4 Digital Fiber Optic Transport........................................................ 2

1.5 Capacity for Expansion and Extended Runs .............................................. 3

1.6 Power Requirements ............................................................. 3

1.7 Fault Detection and Alarm Reporting .................................................. 3

2 DIGITAL UNIT DESCRIPTION.............................................................. 3

2.1 Digital Host Unit Description........................................................ 3

2.2 Digital Remote Unit Description .....................................................7

2.3 Digital Expansion Unit Description................................................... 10

2.4 Terms and Definitions ........................................................... 13

2.5 Specifications................................................................. 13

3 INSTALLATION PLANNING AND SYSTEM DESIGN ............................................... 17

3.1 Base Station Interface Requirements ................................................. 17

3.2 Locating and Mounting Requirements ................................................ 19

3.3 Powering Requirements .......................................................... 20

3.4 Optical Options and Requirements................................................... 21

3.5 Coaxial Cable Requirements....................................................... 22

3.6 System Expansion Planning ....................................................... 23

3.7 DRU Antenna Options............................................................ 23

3.8 External Alarm System Reporting Requirements ......................................... 24

3.9 Maintenance Requirements ....................................................... 24

3.10 System Design Recommendations ................................................... 25

4 DIGITAL HOST UNIT INSTALLATION PROCEDURE ............................................... 28

4.1 System Plan Review and Pre-Installation Cable Routing .................................... 28

4.2 Tools and Materials............................................................. 28

4.3 Unpacking and Inspection......................................................... 29

4.4 Mounting Procecure ............................................................ 29

4.5 Chassis Ground Connections....................................................... 32

4.6 Coaxial Cable Connections ........................................................ 33

4.7 Modular Optical Transceiver Installation............................................... 34

4.8 Ports 1–6 Optical Connections......................................................

4.9 DC Power Connections ........................................................... 37

4.10 External Alarm System Connections .................................................. 38

4.11 AC Power Connections ........................................................... 39

4.12 Create As-Built Drawing .......................................................... 40

5 SYSTEM OPERATION.................................................................. 41

5.1 Tools and Materials............................................................. 41

5.2 Turn-Up System and Verify Operation ................................................. 41

ADCP-75-130 • Issue 3C • August 2006 • Preface

35

(continued)

© 2006, ADC Telecommunications, Inc.

Page iii

ADCP-75-130 • Issue 3C • August 2006 • Preface

TABLE OF CONTENTS

Content Page

5.3 RF Input and Output Signal Level Adjustment ........................................... 44

5.4 Test System Performance ........................................................ 45

6 SYSTEM MAINTENANCE PROCEDURES ..................................................... 47

6.1 Tools and Materials ............................................................ 47

6.2 Fault Detection and Alarm Reporting................................................. 47

6.3 Fault Isolation and Troubleshooting ................................................. 48

6.4 Test Procedures ............................................................... 53

6.5 DHU or DEU Fan Replacement Procedure.............................................. 57

6.6 DHU or DEU Moudular Optical Transceiver Replacement Procedure ............................ 59

6.7 DRU Modular Optical Transceiver Replacement Proceudre.................................. 61

7 GENERAL INFORMATION............................................................... 64

7.1 Warranty/Software ............................................................. 64

7.2 Software Service Agreement ...................................................... 64

7.3 Repair/Exchange Policy.......................................................... 64

7.4 Repair Charges ............................................................... 65

7.5 Replacement/Spare Products ...................................................... 65

7.6 Returned Material ............................................................. 65

7.7 Customer Information and Assistance ................................................ 66

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© 2006, ADC Telecommunications, Inc.

ABOUT THIS GUIDE

This installation and operation manual provides the following information:

• An overview of the Digivance Indoor Coverage Solution (ICS)

• A description of the basic system components including the Digital Host Unit (DHU),

Digital Expansion Unit (DEU), and the Digital Remote Unit (DRU).

• System requirements for planning the Digivance ICS installation.

• Procedures for installing the DHU.

• Procedures for operating and maintaining the Digivance ICS.

• Product warranty, repair, return, and replacement information

The procedures for installing the DEU and DRU are provided in other publications which are
referenced in the Related Publications section and at appropriate points within this manual.

RELATED PUBLICATIONS

ADCP-75-130 • Issue 3C • August 2006 • Preface

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 ICS Digital Expansion Unit Installation Instructions 75-111

Provides a description of the DEU and procedures for installation.

Digivance ICS Digital Remote Unit Installation Instructions 75-112

Provides a description of the DRU and procedures for installation.

Digivance ICS 800 and 1900 MHz High Power Conditioning
Panel User Manual 75-175

Provides a description of the 800 and 1900 MHz High Power Conditioning
Panel (HPCP) and procedures for installation.

Digivance ICS Single Band Remote Interface Unit
(800 and 1900 MHz Systems) User Manual 75-178

Provides a description of the RIU and procedures for installation.

© 2006, ADC Telecommunications, Inc.

Page v

ADCP-75-130 • Issue 3C • August 2006 • 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

The following general admonishments apply throughout the procedures in this manual.

Warning: 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: Do not install the DRU in marine, industrial, or Intrinsic Safety (IS) environments

without an engineering review of the air quality including the presence of other constituent
gasses and dusts. Contact ADC for application assistance if necessary.

Warning: The DRU is powered by 48 VDC power which is supplied over customer-provided

wiring. To prevent electrical shock when installing or modifying the DRU power wiring,
disconnect the wiring at the power source before working with uninsulated wires or terminals.

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 adapters 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 adapter 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: Always allow sufficient fiber length to permit routing without severe bends. Fibers may

be permanently damaged if bent/curved to a radius of less than 2 inches (50 mm).

Page vi

© 2006, ADC Telecommunications, Inc.

STANDARDS CERTIFICATION

FCC: This equipment complies with the applicable sections of Title 47 CFR Part 22.

Caution: Modifications not expressly approved by the party responsible for compliance could
void the user’s authority to operate the equipment.

Part 15.5 General conditions of operation:

a. Persons operating intentional or unintentional radiators shall not be deemed to have any

vested or recognizable right to continue use of any given frequency by virtue of prior
registration or certificate of equipment.

b. Operation of an intentional, unintentional, or incidental radiator is subject to the

conditions that no harmful interference is caused and that interference must be accepted
that may be caused by the operation of an authorized radio station, by another intentional
or unintentional radiator, by industrial, scientific and medical (ISM) equipment, or by an
incidental operator.

c. The operator of a radio frequency device shall be required to cease operating the device

upon notification by a Commission representative that the device is causing harmful
interference. Operation shall not resume until the condition causing the harmful
interference has been corrected.

ADCP-75-130 • Issue 3C • August 2006 • Preface

UL/CUL: This equipment complies with UL and CUL 60950 Standard for Safety for
Information Technology Equipment, Including Electrical Business Equipment.

NEC/CEC: The DRU is suitable for use in environmental air space in accordance with
Section 300-22(c) of the National Electrical Code, and Sections 2-128, 12-010(3), and 12-100
of the Canadian Electrical Code, Part 1, C22.1.

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.

LIST OF ACRONYMS AND ABBREVIATIONS

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

A Amperes

AC Alternating Current

AGC Automatic Gain Control

AMPS Advanced Mobile Phone Service

BTS Base Transceiver Station

CDMA Code Division Multiple Access

CDRH Center for Devices and Radiological Health

CEC Canadian Electrical Code

CUL Underwriters’ Laboratories of Canada

DAS Distributed Antenna System

© 2006, ADC Telecommunications, Inc.

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ADCP-75-130 • Issue 3C • August 2006 • Preface

DC Direct Current

DEU Digital Expansion Unit

DHU Digital Host Unit

DRU Digital Remote Unit

EIA Electronic Industries Association

ERP Effective Radiated Power

ESD Electrostatic Discharge

FCC Federal Communications Commission

FDA Food and Drug Administration

HPCP High Power Conditioning Panel

ICS Indoor Coverage Solution

MM Multi-Mode

NEC National Electrical Code

NOC Network Operations Center

PWR Power

RIU Remote Interface Unit

RF Radio Frequency

RSSI Received Signal Strength Indication

RX Receive or Receiver

SM Single-Mode

TDMA Time Division Multiple Access

TX Transmit or Transmitter

UL Underwriters’ Laboratories

UPS Uninterruptible Power Supply

V Volts

VAC Volts Alternating Current

VDC Volts Direct Current

WECO Western Electric Company

Page viii

© 2006, ADC Telecommunications, Inc.

1 SYSTEM FUNCTIONAL OVERVIEW

The Digivance ICS is a digitally distributed antenna system that provides in-building coverage
for cellular analog (AMPS) and digital (TDMA and CDMA) phone systems operating within
the 800 MHz frequency bands. Large buildings typically interfere with the transmission or
reception of cellular phone system signals by imposing high attenuation losses on RF signals.
The Digivance ICS is designed to overcome the attenuation losses that make cellular
communications within buildings or structures difficult or impossible. With the Digivance
ICS, cellular phone RF signals can be distributed to the interior areas of any building or
structure to eliminate dead spots and improve reception.

1.1 Basic System Components

The basic components of the Digivance ICS and their functions are shown in Figure 1. The
basic system consists of the Digital Host Unit (DHU), Digital Remote Unit (DRU), and when
additional capacity or longer fiber runs are required, the Digital Expansion Unit (DEU). In
addition, two accessory items, the High Power Conditioning Panel (HPCP) and the Remote
Interface Unit (RIU) may be used as needed to interface the DHU with the cellular system
Base Transceiver Station (BTS).

ADCP-75-130 • Issue 3C • August 2006

1.2 Interface With BTS

The DHU interfaces, either locally or remotely, with the BTS. As referenced in this
publication, the BTS could be either a microcell or a cell site base station. When the BTS is
co-located (microcell interface) with the DHU, a local interface over coaxial cable is possible.
An interface device, such as the HPCP, may be used to provide the proper input RF signal
level to the DHU. When the BTS is not co-located (cell site base station interface) with the
DHU, a remote interface using a donor antenna is required. An interface device, such as the
RIU, is used to provide the proper input and output RF signal levels between the donor
antenna and the DHU.

In the forward path, the DHU receives RF signals from the BTS. The DHU digitizes the RF
signals and then converts them to digital optical signals for transport to the DEU’s and
DRU’s. In the reverse path, the DHU receives digital optical signals from the DRU’s and
DEU’s. The DHU converts the optical signals back to the original RF signal format for the
interface with the BTS.

1.3 Interface With Cellular Phones

The DRU interfaces (through an external antenna) with the cellular phones. In the reverse
path, the DRU receives RF signals from each cellular phone. The DRU digitizes the RF
signals and then converts them to digital optical signals for transport to the DHU. In the
forward path, the DRU receives digital optical signals from the DHU. The DRU converts the
optical signals back to the original RF signal format for transmission to the cellular phones. A
small external antenna is connected to the DRU to transmit and receive RF signals to and from
the cellular phones.

© 2006, ADC Telecommunications, Inc.

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ADCP-75-130 • Issue 3C • August 2006

HPCP

RIU

DRU

REMOTE

BTS

DRU

RF

RF

LOCAL

BTS

DHU

DRU

DEU

DRU

DRU

DRU

DRU

DRU

1.4 Digital Fiber Optic Transport

The DHU is connected to each DRU unit over a pair of multi-mode or single-mode
(depending on the type of optical transceiver specified) optical fibers. One fiber is used to
transport the forward path optical signal. The other fiber is used to transport the reverse path
optical signal. Because the optical signal is digital, no adjustments to the optical signal level
are required at the DRU or the DHU as long as the BER is adequate. Either 62.5 or 50 micron
core multi-mode optical fiber; or 9 micron core single-mode optical fiber may be used for the

DEU

DRU

DRU

DRU

Figure 1. System Overview Functional Block Diagram

16417-B

Page 2

© 2006, ADC Telecommunications, Inc.

optical transport connection. With 62.5 micron core multi-mode fiber , the optical path may be
up to 500 meters in length. With 50 micron core multi-mode fiber, the optical path may be up
to 750 meters in length. With 9 micron core single-mode fiber, the optical path may be up to
10 kilometers in length. Single- and multi-mode fibers may be used in the same system. The
optical fibers must be terminated with duplex LC connectors for connection with the DHU,
DEU’s and DRU’s.

1.5 Capacity for Expansion and Extended Runs

The DEU enables 6-way expansion of any optical port. This makes it possible to add more
DRU’s without having to install additional DHU’s. Each DHU is equipped with six optical
ports. If more than six DRU’s are required by the application, a DEU may be connected to one
of the DHU optical ports which expands that port to six ports. If still more optical ports are
required, then a second DEU may be connected to the DHU; or a second DEU may be
connected to the first DEU. The ability to cascade DEU’s in parallel or in series provides
unlimited flexibility. It is physically possible to connect an unlimited number DRU’s to the
DHU through the installation of DEU’s. The maximum number of DRU’s that can connected
to the DHU is limited only by the cumulative noise effect caused by antenna combining.

ADCP-75-130 • Issue 3C • August 2006

1.6 Power Requirements

The DHU, DEU, and RIU are each powered by 120–240 VAC, 50/60 Hz, 2 Amp power which
is supplied through a standard three-conductor 120 VAC power cord. The DRU is powered by
34–48 VDC which is supplied by either the DHU, DEU, or an AC/DC wall-mount style
converter. When the DRU is powered by the DHU or DEU, the power is fed through a
category 3 or 5 cable terminated with male RJ-45 connectors.

1.7 Fault Detection and Alarm Reporting

LED indicators are provided on the front panel of the various units to indicate if the system is
normal or if a fault is detected. In addition, normally open and normally closed alarm contacts
(for both major and minor alarms) are provided at the DHU for connection to a customer
provided external alarm system. This could be a local system or automatic call-out system.

2 DIGTAL UNIT DESCRIPTION

This section provides a description of the functions and features provided by the units that comprise
the ICS system, a listing of terms used and their definition, and a table of specifications.

2.1 Digital Host Unit Description

The DHU, shown in Figure 2, serves as the BTS servicing unit for the Digivance ICS. The
DHU provides the following basic functions:

• RF inputs and outputs

• Optical interface to the DRU’s or DEU’s

© 2006, ADC Telecommunications, Inc.

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ADCP-75-130 • Issue 3C • August 2006

• Digitizing of the cellular forward path RF signal

• Distribution of the digitized forward path RF signals into six digitized optical signals

• Conversion of up to six reverse path digitized optical signals to six digitized RF signals

• Combining of the six digitized RF signals into a single composite digitized RF signal

• Conversion of the combined digitized RF signal to a composite RF signal

• DC power for powering the DRU’s

• Relay contact closures to provide alarm information to an external alarm system

3.5 INCHES
(89 mm)

11.4 INCHES
(290 mm)

15.3 INCHES
(389 mm)

17.2 INCHES
(437 mm)

FRONT PANEL

MOUNTING

BRACKET

(BOTH SIDES)

17267-A

CABLE MANAGEMENT

TRAY

Figure 2. Digital Host Unit

2.1.1 Primary Components

The DHU consists of two electronic circuit board assemblies, a power supply assembly, and a
fan assembly that are mounted within a powder-coated sheet metal enclosure. The metal
enclosure provides a mounting point for the electronic assemblies, serves as a heat sink, and
controls RF emissions. Except for the fan units and optical transceivers, the DHU components
are not field replaceable. The DHU is designed for use within a non-condensing indoor
environment such as inside a wiring closet or cabinet. All controls, connectors, and indicators
are mounted on the DHU front panel for convenient access. Cable management functions for
the power and fiber optic cables are provided by a cable management tray that extends
outward from the DHU front panel.

2.1.2 Mounting

The DHU may be used in both rack-mount and wall-mount applications. For rack mount
applications, a pair of reversible mounting brackets is provided that allow the DHU to be
mounted in either a 19-inch or 23-inch EIA or WECO equipment rack. When rack-mounted,
the front panel of the DHU is flush with the front of the rack and the cable management tray
extends 3.9 inches (99 mm) beyond the front panel. For wall-mount applications, a pair of
holes is provided in the cable management tray which allow the DHU to be mounted on any
flat vertical surface. The DHU should be oriented with the front panel facing upward when
wall-mounted. Fasteners are provided for rack-mount applications.

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© 2006, ADC Telecommunications, Inc.

ADCP-75-130 • Issue 3C • August 2006

2.1.3 Fault Detection and Alarm Reporting

The DHU detects internal circuitry faults and optical port faults. Various front panel Light
Emitting Diode (LED) indicators turn from green to red or yellow if a fault is detected or an
optical input is lost. A set of alarm contacts (normally open and normally closed) are also
provided for reporting an alarm to an external alarm system when a fault is detected. Both
major alarm (all fault conditions except high temperature) and minor alarm (high temperature
fault condition) contacts are provided.

2.1.4 RF Signal Connections

The RF signal connections with the BTS are supported through two N-type female connectors.
One connector is used for coaxial cable connection of the forward path RF signal. The other
connector is used for coaxial cable connection of the reverse path RF signal. In most
installations, the DHU will not connect directly to the BTS but will be connected to an
interface device such as the RIU or the HPCP. Additional information concerning the DHU to
BTS interface is provided in the Digivance ICS Remote Interface Unit User Manual (ADCP­75-178) and in the Digivance ICS 800 and 1900 MHz High Power Conditioning Panel User
Manual (ADCP-75-175).

Maximum output at the DRU antenna port is obtained when the level of the composite
forward path RF signal input to the DHU is 1 dB below the DHU overdrive level. The
maximum signal level the DHU will accept is determined by the DHU overdrive limiter. If the
input signal level is above a specified level, the overdrive limiter will incrementally insert
attenuation. The overdrive limiter protects the system against excessive inputs but does not
function during normal operation. The level of the RF signal output at the DRU is dependent
on the modulation protocol and the number of carriers.

2.1.5 Optical and Electrical Connections

The optical and electrical connections with the DRU’s and DEU’s are supported by six optical
and six electrical ports. Each optical and electrical port consists of a status LED, an RJ-45 DC
power jack, a port enabled/disable switch, and a small form factor LC-type optical transceiver
(available separately). Each transceiver is color-coded to identify whether it supports single­mode (blue) or multi-mode (black/beige) fiber. An optical port may be connected to a DRU, a
DEU, or not used. An electrical port may be connected to a DRU or not used. Unused ports
are disabled via the corresponding port enable/disable switch. When disabled, the port LED is
off, the alarm reporting function is disabled, the laser is off, and the DC power is off. Enabling
the enable/disable switch activates all functions. The modular optical transceivers are
accessory items and are field replaceable.

2.1.6 Powering

The DHU is powered by 120–240 VAC (50/60 Hz) power which is supplied through a
standard three-conductor 120 VAC power cord. The power cord is provided with the DHU
and is 98 inches (2.5 meters) long. A resetable circuit breaker/On-Off switch is provided at the
unit front panel. The switch applies power to the DHU internal power supply.

© 2006, ADC Telecommunications, Inc.

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ADCP-75-130 • Issue 3C • August 2006

2.1.7 Cooling

Continuous air-flow for cooling is provided by dual fans mounted on the right side of the
housing. A minimum of 3 inches (76 mm) of clearance space must be provided on both the
left and right sides of the DHU for air intake and exhaust. An alarm is provided that indicates
if a high temperature condition (>50º C/122º F) occurs. The fans may be field-replaced if
either fan fails.

2.1.8 User Interface

The DHU user interface consists of the various connectors, switches, terminals, and LEDs that
are provided on the DHU front panel. The DHU user interface points are described in Table 1
and indicated in Figure 3.

Table 1. Digital Host Unit User Interface

REF

No.

1

2 POWER 3-wire AC power

USER INTERFACE

DESIGNATION

DEVICE

FUNCTIONAL

DESCRIPTION

Ground stud Used for connecting a grounding cable to

the DHU chassis.

Used for connecting the AC power cord.

cord connector

3 I/O I/O rocker switch/

circuit breaker

4 OK/NOK (Ports 1–6) Multi-colored LED

(Red/Green/Yellow)

Provides AC power On/Off control and
AC power over current protection.

Indicates if the DRU or remote DEU connected
to the optical port is normal or faulty or if the
reverse path optical input from the DRU or
remote DEU is normal or lost. (see Note)

5 ON/OFF (Ports 1–6) I/O rocker switch Enables or disables corresponding

electrical and optical ports.

6 DC PWR (Ports 1–6) RJ-45 jack (female) Used for connecting a DRU cat 3 or 5 power

cable to the designated DC power jack.

7 FIBER (Ports 1–6) LC-type optical

transceiver

Used for connecting each DEU or DRU
forward path and reverse path optical fibers
to the designated optical port.

8 UNIT Multi-colored LED

(Red/Green/Yellow)

9 OVERDRIVE Multi-colored LED

(Red/Green/Yellow)

Indicates if the DHU is normal or faulty.
(see Note)

Indicates when the forward path RF input
power is overdriving the DHU digitizing
circuitry. (see Note)

10 MAJOR MINOR Screw-type terminal

connector
(14–26 AWG)

Used for connecting an external alarm system
to the DHU. Includes normally open (NO),
normally closed (NC), and common (COM)
wiring connections.

11 RF IN N-type female RF

coaxial connector

12 RF OUT N-type female RF

coaxial connector

Used for connecting the forward path RF
coaxial cable to the DHU.

Used for connecting the reverse path RF
coaxial cable to the DHU.

Note: A more detailed description of LED operation is provided in Section 5.

Page 6

© 2006, ADC Telecommunications, Inc.

ADCP-75-130 • Issue 3C • August 2006

(1) GROUND

STUD

NOTE: SHOWN WITHOUT
CABLE MANAGEMENT TRAY

(3) AC POWER

ON/OFF SWITCH

(2) AC POWER CORD

CONNECTOR

(4) OPTICAL PORT

(6) ELECTRICAL PORT

DC POWER JACK

2.2 Digital Remote Unit Description

The DRU, shown in Figure 4, serves as the remote interface unit for the Digivance ICS. The
DRU provides the following basic functions:

• RF interface to the cellular users via an external antenna

• Optical interface to the DHU or DEU

• Conversion of the forward path digitized optical signal to a digitized RF signal

• Conversion of the digitized forward path RF signal to the original cellular RF signal

• Digitizing of the cellular reverse path RF signal

• Conversion of the digitized reverse path RF signal to a digital optical signal output

• Transports alarm status over the reverse path optical fiber

LED INDICATOR

(6 PLACES)

(6 PLACES)

(5) OPT/ELEC PORT

ENABLE/DISABLE

SWITCH (6 PLACES)

(7) OPTICAL PORT

OPTICAL TRANSCEIVER

TX-LEFT - RX-RIGHT

(6 PLACES)

(10) ALARM

CONNECTOR

RECEPTACLE

Figure 3. Digital Host Unit User Interface

(8) UNIT LED

INDICATOR

(11) RF INPUT

CONNECTOR

(9) OVERDRIVE

LED

INDICATOR

(12) RF OUTPUT

CONNECTOR

17264-A

2.1 INCHES
(53 mm)

7.3 INCHES
(185 mm)

7.0 INCHES
(178 mm)

Figure 4. Digital Remote Unit

FRONT PANEL

MOUNTING FOOT

(EACH CORNER)

17268-A

© 2006, ADC Telecommunications, Inc.

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ADCP-75-130 • Issue 3C • August 2006

2.2.1 Primary Components

The DRU consists of an electronic circuit board assembly that is mounted within a powder­coated sheet metal enclosure. The metal enclosure provides a mounting point for the
electronic assembly, serves as a heat sink, and controls RF emissions. Except for the optical
transceiver, the DRU components are not field replaceable. The DRU is designed for use
within a non-condensing indoor environment such as inside a building. All controls,
connectors, and indicators (except the SMA antenna connector) are mounted on the DRU front
panel for convenient access.

2.2.2 Mounting

The DRU is equipped with four integral mounting feet that allow it to be mounted on any flat
horizontal or vertical surface. A typical location for mounting the DRU would be on a ceiling
or a wall. Slots are provided in the mounting feet for securing the DRU to the mounting
surface.

2.2.3 Fault Detection

The DRU detects internal circuitry faults or loss of system inputs. A front panel LED indicator
turns from green to red when a fault condition is detected or when the optical input is lost. The
DRU sends the fault information to the DHU or DEU over the reverse path optical fiber. A
corresponding port LED at the DHU or DEU turns from green to red when the DRU reports a
fault.

2.2.4 Antenna Connection

The RF signal interface between the DRU and the cellular users is provided through an
external antenna. An SMA connector is provided for connecting the DRU to the antenna. The
antenna must be ordered separately. Several types of antennas with various RF propagations
are available. Non-ADC antennas may also be used with the DRU to meet various application
requirements but must comply with equipment authorization for RF exposure compliance.

2.2.5 Optical Port

The DRU uses a small form factor LC-type optical transceiver for connecting the optical
fibers. Each transceiver is color-coded to identify whether it supports single-mode (blue) or
multi-mode (black/beige) fiber. Depending on the application requirements, the optical port
may be connected to either a DHU or a DEU. The modular optical transceiver is an accessory
item and is field replaceable.

2.2.6 Powering

The DRU is equipped with a female RJ-45 jack that provides a connection point for the DC
power cable. The DRU is powered by 34–48 VDC power which is supplied through the RJ-45
connector. Power to the DRU may be supplied by the DHU, DEU, or by a 120 VAC to 48

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ADCP-75-130 • Issue 3C • August 2006

VDC power converter (available separately as an accessory item) plugged into a properly
grounded 120 VAC outlet. The AC/DC converter is a UL Listed stand-alone Limited Power
Supply (LPS) unit with a rated output of 48 VDC at 1.2 Amps. When powered by the DHU or
DEU, a category 3 or 5 twisted-pair cable terminated with RJ-45 connectors is required.

2.2.7 Cooling

The DRU is cooled by natural convection air-flow. The DRU mounting feet are designed to provide
clearance under the unit so that air can enter the DRU enclosure from the bottom and exit through
the top. A minimum clearance of 3 inches (76 mm) must be provided on all sides of the DRU
(except the bottom) to ensure there is adequate air circulation for cooling. In addition, at least one
surface of the DRU installation area must be open to the interior of the building.

2.2.8 User Interface

The DRU user interface consists of the connectors and LED that are provided on the DRU
front and rear panels. The DRU user interface points are described in Table 2 and indicated in
Figure 5.

Table 2. Digital Remote Unit User Interface

REF

No.

1 STATUS Multi-colored LED

USER INTERFACE

DESIGNATION

DEVICE

(Red/Green/Yellow)

FUNCTIONAL

DESCRIPTION

Indicates if the status of the DRU is normal
or faulty or if the forward path optical input
is normal or lost. (see Note)

2 48 VDC RJ-45 jack (female) Used for connecting a DC power cable.

3 FIBER

TX RX

4 – SMA-type coaxial

LC-type optical
transceiver

connector (female)

Used for connecting the forward path and
reverse path optical fibers.

Used for connecting the antenna coaxial
cable lead.

Note: A more detailed description of LED operation is provided in Section 5.

(2) 48 VDC POWER

CONNECTOR

(3) FIBER LINK
OPTICAL ADAPTERS
TX-LEFT - RX-RIGHT

(1) STATUS LED

REAR VIEWFRONT VIEW

(4) ANTENNA CONNECTOR

Figure 5. Digital Remote Unit User Interface

© 2006, ADC Telecommunications, Inc.

17269-A

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ADCP-75-130 • Issue 3C • August 2006

2.3 Digital Expansion Unit Description

The DEU, shown in Figure 6, serves as a service expansion unit and line extender for the
Digivance ICS. The DEU provides the following basic functions:

• Optical interface to the DHU and up to six DRU’s or DEU’s

• Conversion of the forward path digitized optical signal to an electrical bit stream

• Splitting of the electrical bit stream into six separate bit streams

• Conversion of the six forward path electrical bit streams into six digital optical signals

• Conversion of up to six reverse path digital optical signals into six serial bit streams

• Combining of the six reverse path serial bit streams into a single digital composite signal

• Conversion of the single digital composite signal to a digital optical signal

• DC power for powering the DRU’s

• Alarm transport via the optical fibers

3.5 INCHES
(89 mm)

17.2 INCHES
(437 mm)

FRONT PANEL

MOUNTING

BRACKET

(BOTH SIDES)

11.4 INCHES
(290 mm)

15.3 INCHES
(389 mm)

CABLE MANAGEMENT

17270-A

TRAY

Figure 6. Digital Expansion Unit

2.3.1 Primary Components

The DEU consists of two electronic circuit board assemblies and a power supply that are
mounted within a powder-coated sheet metal enclosure. The metal enclosure provides a
mounting point for the electronic assemblies and serves as a heat sink. Except for the fan units
and optical transceivers, the DEU components are not field replaceable. The DEU is designed
for use within a non-condensing indoor environment such as inside a wiring closet or cabinet.
All controls, connectors, and indicators are mounted on the DEU front panel for convenient
access. Cable management functions for the power and fiber optic cables are provided by a
cable management tray that extends outward from the DEU front panel.

2.3.2 Mounting

The DEU may be used in both rack-mount and wall-mount applications. For rack mount
applications, a pair of reversible mounting brackets is provided that allows the DEU to be

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© 2006, ADC Telecommunications, Inc.

ADCP-75-130 • Issue 3C • August 2006

mounted in either a 19-inch or 23-inch EIA or WECO equipment rack. When rack-mounted,
the front panel of the DEU is flush with the front of the rack and the cable management tray
extends 3.9 inches (99 mm) beyond the front panel. For wall-mount applications, a pair of
holes is provided in the cable management tray which allow the DEU to be mounted on any
flat vertical surface. The DEU should be oriented with the front panel facing upward when
wall-mounted. Fasteners are provided for rack-mount applications.

2.3.3 Fault Detection

The DEU detects internal circuitry faults or loss of system inputs. Various front panel Light
Emitting Diode (LED) indicators turn from green to red or yellow when a fault is detected or
when an optical input is lost. The DEU transports the fault information to the DHU or
supporting DEU over the reverse path optical fiber. A corresponding port LED at the DHU or
DEU turns from green to red when the DEU reports a fault.

2.3.4 Optical and Electrical Connections

The optical and electrical connections with the DRU’s and DEU’s are supported by six optical
and six electrical ports. Each optical and electrical port consists of a status LED, an RJ-45 DC
power jack, a port enable/disable switch, and a small form factor LC type optical transceiver
(available separately). Each transceiver is color-coded to identify whether it supports single­mode (blue) or multi-mode (black/beige) fiber. An optical port may be connected to a DRU, a
DEU, or not used. An electrical port may be connected to a DRU or not used. Unused ports are
disabled via the corresponding port enable/disable switch. When disabled, the port LED is off,
the alarm reporting function is disabled, the laser is off, and the DC power is off. Enabling the
enable/disable switch activates all functions. The DEU also provides one optical port (designated
as the host port ) for the optical interface with the DHU or a supporting DEU. The modular
optical transceivers are available as accessory items and are field replaceable.

2.3.5 Powering

The DEU is powered by 120–240 VAC (50/60 Hz) power which is supplied though a standard
three-conductor 120 VAC power cord. The power cord is provided with the DEU and is 98
inches (2.5 meters) long. A resetable circuit breaker/On-Off switch is provided at the unit
front panel. The switch applies power to the DEU internal power supply.

2.3.6 Cooling

Continuous air flow for cooling is provided by dual fans mounted on the right side of the sheet
metal housing. A minimum of 3 inches (76 mm) of clearance space must be provided on both
the left and right sides of the DEU for air intake and exhaust. An alarm is provided that
indicates if a high temperature condition (>50º C/122º F) occurs. The fans may be field­replaced if either unit fails.

2.3.7 User Interface

The DEU user interface consists of the various connectors, switches, and LEDs that are
provided on the DEU front panel. The DEU user interface points are described in Table 3 and
indicated in Figure 7.

© 2006, ADC Telecommunications, Inc.

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ADCP-75-130 • Issue 3C • August 2006

Table 3. Digital Expansion Unit User Interface

REF

No.

1

2 POWER 3-wire AC power

USER INTERFACE

DESIGNATION

DEVICE

FUNCTIONAL

DESCRIPTION

Grounding stud Used for connecting a grounding cable to

the DEU chassis.

Used for connecting the AC power cord.

cord connector

3 I/O I/O rocker switch/

circuit breaker

4 OK/NOK (Ports 1–6) Multi-colored LED

(Red/Green/Yellow)

Provides AC power On/Off control and
AC power over current protection.

Indicates if the DRU or remote DEU
connected to the optical port is normal or
faulty or if the reverse path optical input
from the DRU or remote DEU is normal
or lost. (see Note)

5 ON/OFF (Ports 1–6) I/O rocker switch Enables or disables corresponding

electrical and optical ports.

6 DC PWR (Ports 1–6) RJ-45 jack (female) Used for connecting a DRU cat 3 or 5 power

cable to the designated DC power jack.

7 FIBER (Ports 1–6) LC-type optical

transceiver

Used for connecting each DRU or remote
DEU forward path and reverse path optical
fiber to the designated optical port.

8 HOST PORT LC-type optical

transceiver

9 UNIT Multi-colored LED

(Red/Green/Yellow)

10 HOST PORT Multi-colored LED

(Red/Green/Yellow)

Used for connecting the DHU or supporting
DEU forward path and reverse path optical fiber.

Indicates if the DEU is normal or faulty.
(see Note)

Indicates if the forward path optical input
from the DHU or supporting DEU is
normal or lost. (see Note)

Note: A more detailed description of LED operation is provided in Section 5.

(1) GROUNDING

STUD

NOTE: SHOWN WITHOUT
CABLE MANAGEMENT TRAY

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© 2006, ADC Telecommunications, Inc.

(3) AC POWER

ON/OFF SWITCH

(2) AC POWER CORD

CONNECTOR

(4) OPTICAL PORT

LED INDICATOR

(6 PLACES)

(6) ELECTRICAL PORT

DC POWER JACK

(6 PLACES)

(5) OPT/ELEC PORT

ENABLE/DISABLE

SWITCH (6 PLACES)

(7) OPTICAL PORT

OPTICAL TRANSCEIVER

TX-LEFT - RX-RIGHT

(6 PLACES)

(9) UNIT LED

INDICATOR

(8) HOST PORT

OPTICAL TRANSCEIVER

TX-LEFT - RX-RIGHT

Figure 7. Digital Expansion Unit User Interface

(10) HOST PORT

LED

INDICATOR

17266-A

2.4 Terms and Definitions

Refer to Table 4 for a listing of the terms used in this manual and their definition.

TERM DEFINITION

Alarm Response The response to an alarm input.

Base Transceiver Station The radio equipment that transmits and receives the voice and control

Composite Signal A signal that is the sum of several signals.

Digital Expansion Unit The unit that extends a single optical interface to multiple optical

Digital Host Unit The unit that converts and provides the digital source signal to all DEU’s

Digital Remote Unit The unit that interfaces the in-building user to the Digivance optical transport.

Digitized RF Signal The RF signal in a digitized form.

Forward Path Signal A signal that travels from the base station to the cell phone.

Major Alarm An alarm condition that applies when any fault (except high

Minor Alarm The alarm condition that applies when a high temperature condition

Mute To force a forward path RF signal to a “no signal” state.

Normal State The operating state after power-up is completed and no faults are detected.

Port An RF, optical, or electrical interface point.

Port Alarm A fault that affects only the unit or units connected to that port.

Power-Up State The period between the application of power to a unit and the normal

Reverse Path Signal A signal that travels from one or more cell phones to the base station.

Transport Alarm Signal An alarm signal transported over the reverse path optical fiber.

Unit Alarm A fault within a unit that usually affects all connected ports.

ADCP-75-130 • Issue 3C • August 2006

Table 4. Terms and Definitions

channels to and from the cellular handsets.

interfaces or that extends an optical run.

and DRU’s and converts summed inputs from DEU’s and DRU’s.

temperature) occurs.

occurs. (> 50º C/122º F)

Indicates no optical input to port.

state. This period includes time for circuit stabilization and
initialization operations.

2.5 Specifications

Refer to Table 5 for the Digivance ICS system specifications. All specifications apply after a
five minute warm-up period.

© 2006, ADC Telecommunications, Inc.

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ADCP-75-130 • Issue 3C • August 2006

PARAMETER SPECIFICATION REMARKS

Table 5. System Specifications

Optical – All Units

Fiber type

Multi-mode: 50 or 62.5 micron core

Two fibers per transport link

Single-mode: 9 micron core

Maximum fiber length
for guaranteed
performance

500 m (1,641 ft)
750 m (2461 ft)
10 km (32,808 ft)

With 62.5 micron core MM fiber
With 50 micron core MM fiber
With 9 micron core SM fiber

Optical output power –10 to –3 dBm

Optical wavelength 850 nm for multi-mode use

1310 nm for single-mode use

Environmental

Operating temperature

0º to 50º C (32º to 122º F)

Storage temperature –30º to +70º C (–22 to 158º F)

Humidity No condensation

Weather resistance NEMA 1, IEC 529 IP30 Indoor installation only

Airborne contaminants
(DRU only)

At or below levels established in Telecordia Standard, GR-63-CORE,
Network Equipment-Building System (NEBS) Requirements: Physical
Protection, Section 4.5 Airborne Contaminants, Table 4-11, Indoor
Contaminant Levels.

RF Forward Path

System bandwidth

25 MHz

800 MHz (A and B bands) US Cellular 869 to 894 MHz

Output power See Table 6 Maximum composite output signal

requires maximum input signal

Gain +33 dB nominal At room temperature

Gain variation < 6 dB

< 1.5 dB variation per 1.25 MHz
CDMA channel

Over frequency, temperature, and
unit to unit. May have up to 2 dB
variation at upper band edge.

OIP3 +35 dBm typical At max. composite output power

CDMA ACPR1 < –45 dBc

Spurious Output < –40 dBm

Maximum RF input
signal level (composite)

RF Reverse Path
System bandwidth

Approximately –10 dBm Will vary depending on access protocol

and number of carriers

25 MHz

800 MHz (A and B bands) US Cellular 824 to 849 MHz

Gain +10 dB nominal

Gain Variation < 6 dB

< 1.5 dB variation per 1.25 MHz
CDMA channel

Automatic Gain Limiting Enabled for composite RF input

>

–40 dBm

Over frequency, temperature, and
unit to unit.

Prevents A/D saturation with large
inputs.

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© 2006, ADC Telecommunications, Inc.

(continued)

ADCP-75-130 • Issue 3C • August 2006

Table 5. System Specifications, continued

PARAMETER SPECIFICATION REMARKS

Noise Figure < 8 dB + 10 log N where N = # of

remotes

DHU RF output signal

–30 dBm maximum With a –40 dBm composite

level

Physical/Electrical – DHU
Weight

18.5 lbs (8.4 kg)

< 8 dB typical. See Note at end of
table.

maximum input signal at the DRU

RF connection Type N Female

Alarm connection Screw terminals (14–26 AWG) NO, NC, and COM (form C relay

contacts)

Optical connection Duplex LC transceiver

DC power output

RJ-45 Female

connection

Power input 120–240 VAC, 50/60 Hz

AC power connection IEC 320 Male

Power consumption 250 W Maximum

Current rating 2 Amps at 120 VAC

Physical/Electrical – DEU
Weight

18.5 lbs (8.4 kg)

Optical connection Duplex LC transceiver

DC pwr output connection RJ-45 Female

Power input 120–240 VAC, 50/60 Hz

AC power connection IEC 320 Male

Power consumption 250 W Maximum

Current rating 2 Amps at 120 VAC

Physical/Electrical – DRU
Weight

1.5 lbs (708 g)

RF connection SMA Female

Antenna types Ceiling mount omni directional

90º directional panel
Ceiling mount hallway

2.5 dBi gain

7.5 dBi gain
4 dBi gain

Optical connection Duplex LC transceiver

DC pwr input connection RJ-45 Female

Power input 34 to 48 VDC

DC power cable length
(Cat-3 or -5 cable)

500 meters (1,641 ft) maximum Any distance beyond 500 meters

requires alternate power sourcing

Power consumption 17 W Typical

Current rating 400 mA at 48 VDC

Note : The noise from all remotes is added at the host. Given N units with identical gain and noise, the formula
applies exactly. Slight unit to unit noise figure and gain variations make this a very useful approximation.

© 2006, ADC Telecommunications, Inc.

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