ADC Telecommunications DIS190AB Digivance 1900 MHz Indoor Coverage Solution User Manual 75132 CV

Download:
Mirror Download [FCC.gov]
Document ID	721781
Application ID	zRiX107EkTQPbyYP9OCEvA==
Document Description	Users Manual Section 1
Short Term Confidential	No
Permanent Confidential	No
Supercede	No
Document Type	User Manual
Display Format	Adobe Acrobat PDF - pdf
Filesize	186.62kB (2332728 bits)
Date Submitted	2006-10-29 00:00:00
Date Available	2006-10-29 00:00:00
Creation Date	2006-08-31 10:24:30
Producing Software	Acrobat Distiller 7.0.5 (Windows)
Document Lastmod	2006-08-31 10:25:09
Document Title	75132_CV.fm
Document Creator	FrameMaker 6.0

Preliminary
ADCP-75-132
Preliminary Issue 2C
August 2006
®
Digivance Indoor Coverage Solution
1900 MHz Single- or Multi-Mode Fiber
System Installation and Operation Manual
1371881 Rev 1
ADCP-75-132
Preliminary Issue 2C
August 2006
®
Digivance Indoor Coverage Solution
1900 MHz Single or Multi-Mode Fiber
System Installation and Operation Manual
1371881 Rev 1
ADCP-75-132 • Issue 2C • August 2006 • Preface
COPYRIGHT
© 2006, ADC Telecommunications, Inc.
All Rights Reserved
REVISION HISTORY
ISSUE
DATE
REASON FOR CHANGE
Issue 1
10/2002
Original
Issue 2
03/2004
Deleted all references to the LIU, inserted new references to the HPCP, added air quality specifications
and warnings, and updated phone numbers and email addresses.
Issue 2C
08/2006
Updated to include new specifications for the RF output signal level at the DRU.
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 wireless.tac@adc.com.
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: (952) 938-8080
Fax: (952) 917-1717
Page ii
ADCP-75-132 • Issue 2C • August 2006 • Preface
TABLE OF CONTENTS
Content
Page
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
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................................................................. 14
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
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
Frequency Band Selection Procedure ................................................. 29
4.5
Mounting Procecure ............................................................ 30
4.6
Chassis Ground Connections ....................................................... 33
4.7
Coaxial Cable Connections ........................................................ 34
4.8
Modular Optical Transceiver Installation............................................... 35
4.9
Ports 1–6 Optical Connections...................................................... 36
4.10 DC Power Connections ........................................................... 38
4.11 External Alarm System Connections .................................................. 39
4.12 AC Power Connections ........................................................... 40
4.13 Create As-Built Drawing .......................................................... 41
SYSTEM OPERATION .................................................................. 42
5.1
Tools and Materials............................................................. 42
(continued)
Page iii
© 2006, ADC Telecommunications, Inc.
ADCP-75-132 • Issue 2C • August 2006 • Preface
TABLE OF CONTENTS
Content
Page
5.2
5.3
RF Input andOutput Signal Level Adjustment ........................................... 45
5.4
Test System Performance ........................................................ 46
SYSTEM MAINTENANCE PROCEDURES ..................................................... 48
6.1
Turn-Up System and Verify Operation ................................................ 42
Tools and Materials ............................................................ 48
6.2
Fault Detection and Alarm Reporting................................................. 48
6.3
Fault Isolation and Troubleshooting ................................................. 49
6.4
Test Procedures ............................................................... 54
6.5
DHU or DEU Fan Replacement Procedure .............................................. 58
6.6
DHU or DEU Moudular Optical Transceiver Replacement Procedure ............................ 60
6.7
DRU Modular Optical Transceiver Replacement Proceudre .................................. 62
GENERAL INFORMATION............................................................... 65
7.1
Warranty/Software ............................................................. 65
7.2
Software Service Agreement ...................................................... 65
7.3
Repair/Exchange Policy.......................................................... 65
7.4
Repair Charges ............................................................... 66
7.5
Replacement/Spare Products ...................................................... 66
7.6
Returned Material ............................................................. 66
7.7
Customer Information and Assistance ................................................ 67
Page iv
© 2006, ADC Telecommunications, Inc.
ADCP-75-132 • Issue 2C • August 2006 • Preface
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
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
Provides a description of the DEU and procedures for installation.
75-111
Digivance ICS Digital Remote Unit Installation Instructions
Provides a description of the DRU and procedures for installation.
75-112
Digivance ICS 800 and 1900 MHz High Power Conditioning
Panel User Manual
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
Provides a description of the RIU and procedures for installation.
75-175
75-178
Page v
© 2006, ADC Telecommunications, Inc.
ADCP-75-132 • Issue 2C • 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.
ADCP-75-132 • Issue 2C • August 2006 • Preface
STANDARDS CERTIFICATION
FCC: This equipment complies with the applicable sections of Title 47 CFR Part 24.
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.
UL/CUL: This equipment complies with UL and CUL 60590 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:
AC
AGC
AMPS
BTS
CDMA
CDRH
CEC
CUL
DAS
Amperes
Alternating Current
Automatic Gain Control
Advanced Mobile Phone Service
Base Transceiver Station
Code Division Multiple Access
Center for Devices and Radiological Health
Canadian Electrical Code
Underwriters’ Laboratories of Canada
Distributed Antenna System
Page vii
© 2006, ADC Telecommunications, Inc.
ADCP-75-132 • Issue 2C • August 2006 • Preface
DC
DEU
DHU
DRU
EIA
ERP
ESD
FCC
FDA
HPCP
ICS
MM
NEC
NOC
PWR
RIU
RF
RSSI
RX
SM
TDMA
TX
UL
UPS
VAC
VDC
WECO
Page viii
© 2006, ADC Telecommunications, Inc.
Direct Current
Digital Expansion Unit
Digital Host Unit
Digital Remote Unit
Electronic Industries Association
Effective Radiated Power
Electrostatic Discharge
Federal Communications Commission
Food and Drug Administration
High Power Conditioning Panel
Indoor Coverage Solution
Multi-Mode
National Electrical Code
Network Operations Center
Power
Remote Interface Unit
Radio Frequency
Received Signal Strength Indication
Receive or Receiver
Single-Mode
Time Division Multiple Access
Transmit or Transmitter
Underwriters’ Laboratories
Uninterruptible Power Supply
Volts
Volts Alternating Current
Volts Direct Current
Western Electric Company
ADCP-75-132 • Issue 2C • August 2006
SYSTEM FUNCTIONAL OVERVIEW
The Digivance ICS is a digitally distributed antenna system that provides in-building coverage
for digital (TDMA and CDMA) phone systems operating within the 1900 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).
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.
Page 1
© 2006, ADC Telecommunications, Inc.
ADCP-75-132 • Issue 2C • August 2006
DRU
DRU
REMOTE
BTS
DRU
DRU
RIU
DHU
RF
DRU
HPCP
RF
DRU
DEU
DRU
LOCAL
BTS
DRU
DEU
DRU
DRU
DRU
16417-B
Figure 1. System Overview Functional Block Diagram
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
Page 2
© 2006, ADC Telecommunications, Inc.
ADCP-75-132 • Issue 2C • August 2006
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.
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 AC 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.
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
Page 3
© 2006, ADC Telecommunications, Inc.
ADCP-75-132 • Issue 2C • 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
17.2 INCHES
(437 mm)
FRONT PANEL
MOUNTING
BRACKET
(BOTH SIDES)
3.5 INCHES
(89 mm)
11.4 INCHES
(290 mm)
15.3 INCHES
(389 mm)
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.
Page 4
© 2006, ADC Telecommunications, Inc.
ADCP-75-132 • Issue 2C • 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 type N 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.
Page 5
© 2006, ADC Telecommunications, Inc.
ADCP-75-132 • Issue 2C • 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.
USER INTERFACE
DESIGNATION
DEVICE
FUNCTIONAL
DESCRIPTION
Ground stud
Used for connecting a grounding cable to
the DHU chassis.
POWER
3-wire AC power
cord connector
Used for connecting the AC power cord.
I/O
I/O rocker switch/
circuit breaker
Provides AC power On/Off control and
AC power over current protection.
OK/NOK (Ports 1–6)
Multi-colored LED
(Red/Green/Yellow)
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)
ON/OFF (Ports 1–6)
I/O rocker switch
Enables or disables corresponding
electrical and optical ports.
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.
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.
UNIT
Multi-colored LED
(Red/Green/Yellow)
Indicates if the DHU is normal or faulty.
(see Note)
OVERDRIVE
Multi-colored LED
(Red/Green/Yellow)
Indicates when the forward path RF input
power is overdriving the DHU digitizing
circuitry. (see Note)
10
MAJOR
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
Used for connecting the forward path RF
coaxial cable to the DHU.
12
RF OUT
N-type female RF
coaxial connector
Used for connecting the reverse path RF
coaxial cable to the DHU.
MINOR
Note: A more detailed description of LED operation is provided in Section 5.
Page 6
© 2006, ADC Telecommunications, Inc.
ADCP-75-132 • Issue 2C • August 2006
(1) GROUND
STUD
(4) OPTICAL PORT
LED INDICATOR
(6 PLACES)
(3) AC POWER
ON/OFF SWITCH
(2) AC POWER CORD
CONNECTOR
NOTE: SHOWN WITHOUT
CABLE MANAGEMENT TRAY
(5) OPT/ELEC PORT
ENABLE/DISABLE
SWITCH (6 PLACES)
(8) UNIT LED
INDICATOR
(11) RF INPUT
CONNECTOR
(6) ELECTRICAL PORT (7) OPTICAL PORT
(10) ALARM (9) OVERDRIVE (12) RF OUTPUT
DC POWER JACK OPTICAL TRANSCEIVER CONNECTOR
LED
CONNECTOR
(6 PLACES)
TX-LEFT - RX-RIGHT
RECEPTACLE INDICATOR
(6 PLACES)
17264-A
Figure 3. Digital Host Unit User Interface
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
FRONT PANEL
2.1 INCHES
(53 mm)
MOUNTING FOOT
(EACH CORNER)
7.3 INCHES
(185 mm)
7.0 INCHES
(178 mm)
17268-A
Figure 4. Digital Remote Unit
Page 7
© 2006, ADC Telecommunications, Inc.
ADCP-75-132 • Issue 2C • 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
Page 8
© 2006, ADC Telecommunications, Inc.
ADCP-75-132 • Issue 2C • 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 the 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.
USER INTERFACE
DESIGNATION
DEVICE
FUNCTIONAL
DESCRIPTION
STATUS
Multi-colored LED
(Red/Green/Yellow)
Indicates if the status of the DRU is normal
or faulty or if the forward path optical input
is normal or lost. (see Note)
48 VDC
RJ-45 jack (female)
Used for connecting a DC power cable.
FIBER
TX RX
LC-type optical
transceiver
Used for connecting the forward path and
reverse path optical fibers.
SMA-type coaxial
connector (female)
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
FRONT VIEW
REAR VIEW
17269-A
(1) STATUS LED
(4) ANTENNA CONNECTOR
Figure 5. Digital Remote Unit User Interface
Page 9
© 2006, ADC Telecommunications, Inc.
ADCP-75-132 • Issue 2C • 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
17.2 INCHES
(437 mm)
FRONT PANEL
MOUNTING
BRACKET
(BOTH SIDES)
3.5 INCHES
(89 mm)
11.4 INCHES
(290 mm)
15.3 INCHES
(389 mm)
17270-A
CABLE MANAGEMENT
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 allow the DEU to be
Page 10
© 2006, ADC Telecommunications, Inc.
ADCP-75-132 • Issue 2C • 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.
Page 11
© 2006, ADC Telecommunications, Inc.
ADCP-75-132 • Issue 2C • August 2006
Table 3. Digital Expansion Unit User Interface
REF
No.
USER INTERFACE
DESIGNATION
FUNCTIONAL
DESCRIPTION
DEVICE
Grounding stud
Used for connecting a grounding cable to
the DEU chassis.
POWER
3-wire AC power
cord connector
Used for connecting the AC power cord.
I/O
I/O rocker switch/
circuit breaker
Provides AC power On/Off control and
AC power over current protection.
OK/NOK (Ports 1–6)
Multi-colored LED
(Red/Green/Yellow)
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)
ON/OFF (Ports 1–6)
I/O rocker switch
Enables or disables corresponding
electrical and optical ports.
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.
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.
HOST PORT
LC-type optical
transceiver
Used for connecting the DHU or supporting
DEU forward path and reverse path optical fiber.
UNIT
Multi-colored LED
(Red/Green/Yellow)
Indicates if the DEU is normal or faulty.
(see Note)
10
HOST PORT
Multi-colored LED
(Red/Green/Yellow)
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 (3) AC POWER
ON/OFF SWITCH
STUD
(2) AC POWER CORD
CONNECTOR
NOTE: SHOWN WITHOUT
CABLE MANAGEMENT TRAY
(4) OPTICAL PORT
LED INDICATOR
(6 PLACES)
(5) OPT/ELEC PORT
ENABLE/DISABLE
SWITCH (6 PLACES)
(9) UNIT LED
INDICATOR
(6) ELECTRICAL PORT
(7) OPTICAL PORT
(8) HOST PORT
(10) HOST PORT
DC POWER JACK
OPTICAL TRANSCEIVER OPTICAL TRANSCEIVER
LED
(6 PLACES)
TX-LEFT - RX-RIGHT
TX-LEFT - RX-RIGHT
INDICATOR
(6 PLACES)
17266-A
Figure 7. Digital Expansion Unit User Interface
Page 12
© 2006, ADC Telecommunications, Inc.
ADCP-75-132 • Issue 2C • August 2006
2.4 Terms and Definitions
Refer to Table 4 for a listing of the terms used in this manual and their definition.
Table 4. Terms and Definitions
TERM
DEFINITION
Alarm Response
The response to an alarm input.
Base Transceiver Station
The radio equipment that transmits and receives the voice and control
channels to and from the cellular handsets.
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
interfaces or that extends an optical run.
Digital Host Unit
The unit that converts and provides the digital source signal to all DEU’s
and DRU’s and converts summed inputs from DEU’s and DRU’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
temperature) occurs.
Minor Alarm
The alarm condition that applies when a high temperature condition
occurs. (> 50º C/122º F)
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.
Indicates no optical input to port.
Power-Up State
The period between the application of power to a unit and the normal
state. This period includes time for circuit stabilization and
initialization operations.
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.
Page 13
© 2006, ADC Telecommunications, Inc.
ADCP-75-132 • Issue 2C • August 2006
2.5 Specifications
Refer to Table 5 for the Digivance ICS system specifications. All specifications apply after a
five minute warm-up period.
Table 5. System Specifications
PARAMETER
SPECIFICATION
REMARKS
Fiber type
Multi-mode: 50 or 62.5 micron core
Single-mode: 9 micron core
Two fibers per transport link
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
Optical – All Units
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
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.
Indoor installation only
RF Forward Path
System bandwidth
25 MHz
1900 MHz freq. bands
AD band
DBE band
BEF band
EFC band
US PCS
1930 to 1950 MHz
1945 to 1970 MHz
1950 to 1975 MHz
1965 to 1990 MHz
Output power
See Table 6
Maximum composite output signal
requires maximum input signal
Gain
+36 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
< –30 dBm
Maximum RF input signal
level (composite)
Approximately –10 dBm
Will vary depending on access protocol
and number of carriers
(continued)
Page 14
© 2006, ADC Telecommunications, Inc.
ADCP-75-132 • Issue 2C • August 2006
Table 5. System Specifications, continued
PARAMETER
SPECIFICATION
REMARKS
RF Reverse Path
System bandwidth
25 MHz
1900 MHz freq. bands
AD band
DBE band
BEF band
EFC band
US PCS
1850 to 1870 MHz
1865 to 1890 MHz
1870 to 1895 MHz
1885 to 1910 MHz
Gain
+14 dB nominal
Gain Variation
< 6 dB
< 1.5 dB variation per 1.25 MHz
CDMA channel
Over frequency, temperature, and
unit to unit.
Automatic Gain Limiting
Enabled for composite RF input
> –40 dBm
Prevents A/D saturation with large
inputs.
Noise Figure
< 10 dB + 10 log N where N = #
of remotes
< 10 dB typical. See Note at end of
table.
DHU RF output signal
level
–30 dBm maximum
With a –40 dBm composite
maximum input signal at the DRU
Physical/Electrical – DHU
Weight
18.5 lbs (8.4 kg)
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
connection
RJ-45
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
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
Female
Female
(continued)
Page 15
© 2006, ADC Telecommunications, Inc.
ADCP-75-132 • Issue 2C • August 2006
Table 5. System Specifications, continued
PARAMETER
SPECIFICATION
REMARKS
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
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
19 W
Typical
Current rating
400 mA at 48 VDC
Female
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.
Table 6.Maximum Forward Path RF Output Signal Levels at the Digital Remote Unit
MODULATION
GSM 1900
EDGE 1900
TDMA 1900
CDMA 1900
W-CDMA 1900
NUMBER OF
CARRIERS
Composite
Per
Carrier
(dBm)
Composite
(dBm)
Per
Carrier
(dBm)
Composite
(dBm)
Per
Carrier
(dBm)
Composite
(dBm)
Per
Carrier
(dBm)
Composite
(dBm)
(dBm)
Per
Carrier
(dBm)
24
24
24
24
23
23
16.5
16.5
16.5
16.5
22
19
21
18
21
18
15
12.5
13
9.5
21
16
20
15
20
15
14.5
10
10.5
5.5
20
14
19
13
19
13
14
19.5
12.5
18
11
18
11
13.5
19
11
17
18
10
13
18.5
10
16.5
17
12.5
18
16
17
12
Note : Per Industry Canada Section 5.3 – The rated output power of this equipment is for single carrier
operation. For situations where multiple carrier operation signals are present, the rating would have to be
reduced by 3.5 dB, especially where the output signal is re-radiated and can cause interference to
adjacent band users. This power reduction is to be by means of input power or gain reduction and not by
an attenuator at the output of the device.
Page 16
© 2006, ADC Telecommunications, Inc.
ADCP-75-132 • Issue 2C • August 2006
INSTALLATION PLANNING AND SYSTEM DESIGN
This section provides installation planning information and basic system design recommendations
for RF engineers that will be designing and installing an in-building coverage solution using the
Digivance ICS. System design and planning services are available from ADC if required. Refer to
Section 7 of this manual for additional information.
3.1 Base Station Interface Requirements
The DHU may be interfaced 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. With a local
interface, a hard-wire connection is provided between the DHU and the BTS (microcell) using
coaxial cables. With a remote interface, an over-the-air connection is provided between the
DHU and the BTS (cell site base station) using a donor antenna.
3.1.1
Local BTS (Microcell) Interface
A local interface between the DHU and the BTS (microcell) over coax requires specific RF
input and output signal levels at both the DHU and BTS. The correct signal levels can
generally be provided by inserting attenuation in the forward and reverse signal paths.
In the forward path, the correct input level can be provided at the DHU using the High Power
Conditioning Panel (HPCP). The HPCP is an accessory item that is used to attenuate the
forward path RF signal. The HPCP provides attenuation adjustments in 1 dB increments over
a range of 40 to 70 dB. A block diagram of a typical local BTS interface is shown in Figure 8.
The maximum RF input signal level the DHU will accept is determined by the DHU overdrive
limiter. When the RF signal input to the DHU is set to 1 dB below the DHU overdrive level, the
RF signal output at the DRU will be at the specified maximum level (see Table 6). The level of the
RF signal output at the DRU is dependent on the modulation protocol and the number of carriers.
DIRECTIONAL ANTENNA
TO/FROM HANDSETS
FORWARD
(DOWNLINK)
T1 LINK
TO SWITCH
LOCAL BASE
TRANSCEIVER
STATION
(MICRO CELL)
REVERSE
(UPLINK)
HIGH POWER
COND. PANEL
EXTERNAL
ATTENUATOR
(IF REQUIRED)
COMPOSITE MAX
PER TABLE 6
COMPOSITE
MAX PER
ADJUSTMENT
PROCEDURE
-40 dBm
(COMPOSITE
MAX)
OPTICAL LINK
DIGITAL
HOST
UNIT
DIGITAL
REMOTE
UNIT
-30 dBm
(COMPOSITE
MAX)
OPTICAL LINK
17792-C
Figure 8. Local BTS Interface Block Diagram
In the reverse path, the input signal level required at the BTS can generally be provided using
an external attenuator or by adjusting the BTS. When the level of the reverse path (uplink)
signal at the DRU is at the recommended composite maximum of –40 dBm, the level of the
RF output signal from the DHU will be –30 dBm.
Page 17
© 2006, ADC Telecommunications, Inc.
ADCP-75-132 • Issue 2C • August 2006
The HPCP is rack or wall mountable. Refer to the Digivance ICS 800 and 1900 MHz High
Power Conditioning Panel User Manual (ADCP-75-175) for additional information.
3.1.2
Remote BTS (Cell Site Base Station) Interface
A remote interface between the DHU and the BTS (cell site base station) via a donor antenna
requires specific RF input and output signal levels at both the DHU and the antenna. The
correct input and output signal levels can generally be provided using the Remote Interface
Unit (RIU). The RIU is an accessory item that is used to adjust both the forward and reverse
path RF signal levels. In the forward path, the RIU provides gain adjustments in 1 dB
increments over a range of +9 to +40 dB. In the reverse path, the RIU provides gain
adjustments in 1 dB increments over a range of +28 to +59 dB. A block diagram of a typical
remote DHU to BTS interface is shown in Figure 9.
DIRECTIONAL
ANTENNA TO/FROM
CELL SITE BTS
REVERSE
(UPLINK)
DIRECTIONAL ANTENNA
TO/FROM HANDSETS
FORWARD
(DOWNLINK)
COMPOSITE MAX
PER TABLE 6
COMPOSITE
MAX PER
ADJUSTMENT
PROCEDURE
OPTICAL LINK
DIGITAL
HOST
UNIT
REMOTE
INTERFACE
UNIT
-30 dBm
(COMPOSITE
MAX)
-40 dBm
(COMPOSITE
MAX)
DIGITAL
REMOTE
UNIT
OPTICAL LINK
17793-B
Figure 9. Remote BTS Interface Block Diagram
The RIU connects to a directional antenna through a duplexer (internal) that provides separate
forward and reverse path connections for the DHU. In the forward path (downlink), the
maximum RF input signal level the DHU will accept is determined by the DHU overdrive limiter.
When the RF signal input to the DHU is set to 1 dB below the DHU overdrive level, the RF signal
output at the DRU will be at the specified maximum level (see Table 6). The level of the RF signal
output at the DRU is dependent on the modulation protocol and the number of carriers.
In the reverse path, the RF output signal level required at the donor antenna will vary
depending on the distance from the BTS. When the level of the reverse path (uplink) signal at
the DRU is at the recommended composite maximum level of –40 dBm, the level of the RF
output signal from the DHU with be –30 dBm. Therefore, it will generally be necessary to add
some gain to the reverse path signal in order to provide the output RF signal level required at
the donor antenna.
The RIU is rack or wall mountable and is powered by 120–240 VAC (50/60 Hz) power. Refer
to the Digivance Remote Interface Unit User Manual (ADCP-75-114) for additional
information.
Page 18
© 2006, ADC Telecommunications, Inc.
ADCP-75-132 • Issue 2C • August 2006
3.2 Location and Mounting Requirements
3.2.1
DHU and DEU Location and Mounting Requirements
The DHU and the DEU may be either rack mounted or wall mounted. Fasteners (both metric and
US standard) are included with each unit for rack mount applications. A pair of reversible mounting
brackets is provided that allows the unit to be mounted in either a 19-inch or 23-inch EIA or WECO
equipment rack. When rack-mounted, the front panel of the unit is flush with the front of the rack.
The cable management tray extends 3.9 inches (99 mm) beyond the front panel. Both the DHU and
DEU occupy 3.5 inches (89 mm) of rack space. Make sure the mechanical loading of the rack will
be even to avoid a hazardous condition such as a severely unbalanced rack. The rack should safely
support the combined weight of all the equipment it holds and be properly anchored.
For wall-mount applications of the DHU or DEU, a pair of holes is provided in the cable
management tray that allows the unit to be mounted on any flat vertical surface. The mounting
holes are spaced 11-21/32 inches (296 mm) apart. The DHU/DEU should be oriented so the
front panel faces up when mounted. Appropriate fasteners for wall mounting must be provided
by the installer. It is recommended that a backer board such as 3/4-inch plywood be installed
over the mounting surface to provide a secure base for attaching the DHU or DEU.
The DHU and DEU should be mounted in a non-condensing indoor environment such as
inside a wiring closet or within an environmentally controlled cabinet. All controls,
connectors, and indicators are mounted on the front panel. All cables should be routed to the
front panel for connection. Cable retainers provided on the cable management tray for
securing the fiber optic, DC power, and external alarm system cables.
The maximum recommended ambient temperature for the DHU and DEU is 50º C (122º F).
Sufficient space for air circulation should be provided between each unit when installed in a
multi-unit rack assembly because the operating ambient temperature of the rack environment
might be greater than room ambient. A minimum clearance of 3 inches (76 mm) should be
provided on both the left and right sides of the unit for air intake and exhaust. Refer to Figure
2 for the DHU dimensions and Figure 6 for the DEU dimensions.
3.2.2
DRU Location and Mounting Requirements
The DRU must be installed in a non-condensing indoor environment and may be wall-mounted
or ceiling-mounted. The DRU may also be installed in spaces used for environmental air such
as the space over a suspended ceiling or beneath a raised floor. However, the DRU is not
intended for installation in marine, industrial, or Intrinsic Safety (IS) environments without an
engineering review of the air quality as well as other constituent gasses and dusts. Indoor air
environments are to have air borne contaminants at or below levels established in Telcordia
Standard, GR-63-CORE, Network Equipment-Building System (NEBS) Requirements:
Physical Protection, Section 4.5 Airborne Contaminants, Table 4-11, Indoor Contaminant
Levels. Contact ADC for application assistance if necessary.
The DRU is equipped with four integral mounting feet that allow it to be fastened to any flat
vertical or horizontal surface. Holes are provided in the mounting feet for inserting fasteners.
Appropriate fasteners for securing the DRU to the selected mounting surface must be provided
by the installer.
Page 19
© 2006, ADC Telecommunications, Inc.
ADCP-75-132 • Issue 2C • August 2006
The DC power cable and optical fibers should be routed to the DRU front panel for connection.
The antenna coaxial cable should be routed to the DRU rear panel for connection. A minimum of
3 inches (76 mm) of clearance space should 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. If a portable/flexible
antenna will be installed, a minimum of 9 inches (229 mm) clearance should be allowed on the
surface that is perpendicular to the antenna. Refer to Figure 4 for the DRU dimensions.
3.3
Powering Requirements
3.3.1
DHU and DEU Powering
The DHU and DEU are powered by 120–240 VAC (50/60 Hz) which is supplied through a
standard three-conductor 120 VAC power cord. The power cord is provided with the unit and
is 98 inches (2.5 m) long. Both the DHU and the DEU have a current rating of 2.0 Amps at
120 VAC input. Each unit should be located so that an AC outlet is within the reach of the
power cord.
If back-up powering is required, it is recommended that the building Uninterruptible Power Supply
(UPS) system be used to provide back-up power to the DHU and DEU in the event of an AC power
outage. This will also power all the DRU’s that are powered by the DHU or DEU.
3.3.2
DRU Powering
The DRU is powered by 48 VDC power which is input to the DRU through the front panel RJ45 connector. Power to the DRU may be provided by the DHU, DEU, or by a 120 VAC to 48
VDC power converter (available separately as an accessory item) plugged into a properly
grounded 120 VAC outlet. The DRU has a current rating of 400 mA at 48 VDC input.
If the DRU will be powered by the DHU or DEU, the power cable must be fabricated on-site by the
installer. Category 3 or 5 twisted pair cable should be used for the power supply cable. The maximum
recommended length of the power cable is 500 meters. The power cable must be routed between the
DHU or DEU and the DRU. Both ends of the power cable must be terminated with a male RJ-45
connector. If the DRU will be located more than 500 meters from the DHU or DRU, it must be locally
powered by a 48 VDC power converter.
The DRU may be powered locally by the AC/DC converter, shown in Figure 10, which is
available as an accessory item. The converter is a UL Listed stand alone Limited Power
Supply (LPS) unit with a rated output of 48 VDC at 1.2 Amps. The converter is equipped
with a 6-foot (1.8 m) DC power cable which is terminated with an RJ-45 male connector. The
converter 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 6 feet (1.8 m) long and is provided
with the converter.
Page 20
© 2006, ADC Telecommunications, Inc.
ADCP-75-132 • Issue 2C • August 2006
15988-A
Figure 10. AC/DC Power Converter
3.4 Optical Options and Requirements
Each DHU and its associated DEU’s and DRU’s are connected over a pair of optical fibers.
One fiber transports the forward path optical signal and the other fiber transports the reverse
path optical signal. Either 62.5 or 50 micron core multi-mode optical fiber; or 9 micron core
single-mode optical fiber may be used for the optical transport connection. With 62.5 micron
core fiber, the optical path may be up to 500 meters in length. With 50 micron core fiber, the
optical path may be up to 750 meters in length. With 9 micron core cable, the optical path may
be up to 10 kilometers in length. Single- and multi-mode fibers may be used in the same
system. A diagram of the optical connections is shown in Figure 11.
Whenever possible, use conduit or a guideway such as the FiberGuide system to route the optical
fibers between the DHU, the DEU’s, and the DRU’s. Avoid routing optical fibers through ladder
type cable racks or troughs that do not provide sufficient support to limit bending or prevent
accidental damage. Tie-wrapping is not recommended as a means of securing fiber optic cables.
Provide sufficient slack at each unit for connecting each fiber to the required port. Fibers may be
pre-terminated or terminated on-site using field-installable LC type connectors.
Page 21
© 2006, ADC Telecommunications, Inc.
ADCP-75-132 • Issue 2C • August 2006
62.5 MICRON: MAXIMUM LENGTH = 500 METERS
50 MICRON: MAXIMUM LENGTH = 750 METERS
9 MICRON: MAXIMUM LENGTH = 10 KILOMETERS
DIGITAL
HOST
UNIT
DIGITAL
REMOTE
UNIT
PORTS 1-6
FIBER PORT
BASIC CONFIGURATION WITH DHU AND DRU
TX
TX
RX
RX
REVERSE PATH
FORWARD PATH
BASIC CONFIGURATION WITH DHU, DEU, AND DRU
DIGITAL EXPANSION UNIT
DIGITAL
HOST
UNIT
PORTS
1-6
PORTS 1-6
TX
RX
TX
DIGITAL
REMOTE
UNIT
HOST
PORT
RX
TX
FIBER PORT
RX
TX
RX
REVERSE PATH
REVERSE PATH
FORWARD PATH
FORWARD PATH
END-TO-END OPTICAL CONNECTOR/CABLE ASSEMBLY DIAGRAM
16814-A
Figure 11. Digivance ICS Optical Connections
3.5 Coaxial Cable Requirements
The DHU interfaces either locally (see Figure 8) or remotely (see Figure 9) with the BTS
through coaxial cable connections. In a local interface, coaxial cables are required to link the
DHU, HPCP, and the BTS. In a remote interface, coaxial cables are required to link the DHU,
RIU, and the donor antenna. The DHU, HPCP, and RIU are equipped with N-type female
connectors for connecting the forward and reverse path coaxial cables. High performance,
flexible, low loss 50-ohm coaxial communications cable (RG 400 or equivalent) should be
used for all coaxial connections.
Page 22
© 2006, ADC Telecommunications, Inc.

---

Source Exif Data:

File Type                       : PDF
File Type Extension             : pdf
MIME Type                       : application/pdf
PDF Version                     : 1.3
Linearized                      : No
Modify Date                     : 2006:08:31 10:25:09-05:00
Create Date                     : 2006:08:31 10:24:30-05:00
Title                           : 75132_CV.fm
Creator                         : FrameMaker 6.0
Producer                        : Acrobat Distiller 7.0.5 (Windows)
Page Count                      : 32

EXIF Metadata provided by EXIF.tools