ADC DVICSRIU800 User Manual
FCC ID: F8I-DVICSRIU800
ADCP-75-114
Issue C June 2001
Digivance
Indoor Coverage Solution
800 Mhz Remote Interface Unit User Manual
DRAFT
1145993
ADCP-75-114 • Issue C • June 2001 • Preface
COPYRIGHT
2001, ADC Telecommunications, Inc.
All Rights Reserved
Printed in the U.S.A.
REVISION HISTORY
ISSUE DATE REASON FOR CHANGE
Issue C 06/2001 Original
TRADEMARK INFORMATION
ADC and ADC Telecommunications are registered trademarks of ADC Telecommunications, Inc.
Digivance is a trademark of ADC Telecommunications, 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 63475
(in U.S.A. or Canada) or 952-946-3475 (outside U.S.A. and Canada), or by e-mail to bcg_tac@adc.com.
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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) 946-3292
TABLE OF CONTENTS
Content Page
1 DESCRIPTION....................................................................... 1
1.1 Primary Functions and Compone nts................................................... 1
1.2 Mounting .................................................................... 2
1.3 Fault Detection and Alarm R eporting.................................................. 3
1.4 RF Signal C onnections ........................................................... 3
1.5 RF Signal Level Adjustments ....................................................... 3
1.6 Powering .................................................................... 3
1.7 Cooling ..................................................................... 3
1.8 User Interface ................................................................. 4
1.9 Specifications ................................................................. 5
2 INSTALLATION ...................................................................... 7
2.1 Tools and Materi als ............................................................. 7
2.2 Unpacking and Inspections ........................................................ 7
2.3 Mounting Procedure............................................................. 8
2.4 Chassis Ground Connection ........................................................11
2.5 Coaxial Cabl e Connections ........................................................12
2.6 External Alar m System Connections ..................................................14
2.7 AC Power Connection ............................................................15
3 OPERATION ........................................................................17
3.1 Tools and Materi als .............................................................17
3.2 Tur n-Up Unit and Verify O peration....................................................17
3.3 For ward Path Level Adjustment .....................................................18
3.4 Reverse Path Level Adjustment .....................................................21
4 MAINTENANCE ......................................................................22
4.1 Tools and Materi als .............................................................22
4.2 Fault Detection and Alarm R eporting..................................................22
4.3 Fan Replacement...............................................................23
5 CUSTOMER INFORMATION AND ASSISTANCE..................................................25
ADCP-75-114 • Issue C • June 2001 • Preface
2001, ADC Telecommunications, Inc.
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ADCP-75-114 • Issue C • June 2001 • Preface
ABOUT THIS MANUAL
This publication provides a description of the Digivance ICS Remote Interface Unit (RIU) plus
instructions for installing the RIU. An overview of the Digivance ICS and a complete
description of the Digital Host Unit (DHU), Digital Remote Unit (DRU) and the Digital
Expansion Unit (DEU) are provided in the Digivance ICS Installation and Operation Manual
(ADCP-75-110). The RIU is an interface device that is used in conjunction with the Digivance
ICS product.
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
(in U.S.A. or Canada) or 952-946-3000, extension 63475 (outside U.S.A. and Canada).
Title/Description ADCP Number
Digivance ICS Installation and Operation Manual
Provides an overview of the Digivance ICS, a complete description of the
DHU, DRU, and DEU, system planning and engineering guidelines, DHU
installation instructions, system turn-up and test procedures, and system
troubleshooting and maintenance procedures.
Digivance ICS Digital Expansion Unit Installation Instructions
Provides a description of the DEU and procedures for installing the DEU.
ADCP-75-110
ADCP-75-111
Digivance ICS Digital Remote Unit Installation Instructions
Provides a description of the DRU and procedures for installing the DRU.
Digivance ICS Local Interface Unit User Manual
Provides a description of the LIU and procedures for installing the LIU.
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.
ADCP-75-112
ADCP-75-113
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2001, ADC Telecommunications, Inc.
ADCP-75-114 • Issue C • June 2001 • Preface
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
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.
STANDARDS CERTIFICATION
FCC: This equipment complies with the applicable sections of Title 47 CFR Part 22.
UL/CUL: This equipment complies with UL and CUL 1950 Standard for Safety for
Information Technology Equipment, Including Electrical Business Equipment.
IC (Industry Canada): This equipment complies with IC Certification RSS-131.
LIST OF ACRONYMS AND ABBREVIATIONS
The acronyms and abbreviations used in this manual are detailed in the following list:
A Amperes
AC Alternating Current
CUL Canadian Underwriters Laboratories
DC Direct Current
DEU Digital Expansion Unit
DHU Digital Host Unit
DRU Digital Remote Unit
EIA Electronic Industries Association
ESD Electrostatic Discharge
FCC Federal Communications Commission
IC Industry Canada
ICS Indoor Coverage Solution
LIU Local Interface Unit
NOC Network Operations Center
RIU Remote Interface Unit
2001, ADC Telecommunications, Inc.
Page v
ADCP-75-114 • Issue C • June 2001 • Preface
RF Radio Frequency
UL Underwriters Laboratories
V Volts
VAC Volts Alternating Current
VDC Volts Direct Current
WECO Western Electric Company
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2001, ADC Telecommunications, Inc.
1 DESCRIPTION
ADCP-75-114 • Issue C • June 2001
This section provides a complete description of the Remote Interface Unit (RIU).
1.1 Primary Functions and Components
The RIU, shown in Figure 1, serves as the interfacing unit between a remote BTS and the
Digivance DHU. The RIU provides the following basic functions:
• RF interface to the BTS (through donor antenna) and DHU
• Gain adjustments to the forward and reverse path RF signal
• Duplexing of the forward and reverse path RF signals
• Alarm reporting to an external alarm system
17.2 INCHES
3.5 INCHES
(89 mm)
(437 mm)
11.4 INCHES
(290 mm)
13.6 INCHES
(345 mm)
16650-A
3.9 INCHES
(99 mm)
FRONT PANEL
CABLE MANAGEMENT
TRAY
MOUNTING
BRACKET
(BOTH SIDES)
Figure 1. Remote Interface U nit
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 the DHU and antenna. The correct levels
at the DHU and antenna can be provided using the RIU. The RIU provides adjustable gain in
both the RF forward and reverse paths. The RIU connects to a directional antenna through a
duplexer which provides separate forward and reverse path connections for the DHU. In the
forward path (downlink), the RIU provides the recommended composite maximum RF input
signal level at the DHU which is –20 dBm. When the level of the RF input signal at the DHU
is –20 dBm, the level of the RF output signal at the DRU is +13 dBm which is the maximum
allowed.
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© 2001, ADC Telecommunications, Inc.
ADCP-75-114 • Issue C • June 2001
In the reverse path, the required RF output signal level to the donor antenna will vary
depending on the DRU path loss. 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 is –30 dBm. Therefore, it will generally be necessary to add some gain to
the reverse path signal in order to achieve the required output signal level at the donor antenna.
A block diagram showing a typical remote DHU to BTS interface is provided in Figure 2.
The RIU consists of an electronic circuit board assembly, power supply, duplexer, and linear
power amplifier that are mounted within a powder-coated sheet metal enclosure. The metal
enclosure provides a mounting point for the electronic components, serves as a heat sink, and
controls RF emissions. Except for the fan, the electronic components are not user replaceable.
The RIU 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 RIU front
panel for convenient access. Cable management functions for the power and coaxial cables are
provided by a cable management tray that extends outward from the RIU front panel.
DIRECTIONAL
ANTENNA TO/FROM
CELL SITE BTS
REVERSE
(UPLINK)
REMOTE
INTERFACE
UNIT
FORWARD
(DOWNLINK)
(COMPOSITE
(COMPOSITE
MAX)
-30 dBm
MAX)
OPTICAL LINK
DIGITAL
HOST
UNIT
OPTICAL LINK
DIRECTIONAL ANTENNA
TO/FROM HANDSETS
+13 dBm
(COMPOSITE
MAX)
DIGITAL
REMOTE
UNIT
(COMPOSITE
-40 dBm
MAX)-20 dBm
16425-A
Two versions of the 800 Mhz RIU are available. One version is used to interface with an Aband BTS and the other version is used to interface with a B-band BTS. The frequency (800
Mhz) and band (A or B) are clearly marked on a label attached to the RIU cable management
tray.
1.2 Mounting
The RIU 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 RIU to be mounted
in either a 19-inch or 23-inch EIA or WECO equipment rack. When rack-mounted, the front
panel of the RIU is flush with the front of the rack. The cable management tray extends 3.9
inches (99 mm) beyond the front panel. Fasteners are provided for rack-mount applications.
For wall-mount applications, a pair of holes is provided in the cable management tray which
allow the RIU to be mounted on any flat vertical surface. The mounting brackets may also be
removed and reinstalled is such a way as to be used to secure the RIU to a flat vertical surface.
The RIU should be oriented with the front panel facing upward when wall-mounted. The
fasteners must be provided by the installer in wall-mount applications.
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© 2001, ADC Telecommunications, Inc.
Figure 2. Remote BTS Interface Block D iagram
1.3 Fault Detection and Alarm Reporting
ADCP-75-114 • Issue C • June 2001
The RIU is designed to detect a power amplifier over or under current condition and a high
temperature condition. A single front panel Light Emitting Diode (LED) indicator turns from
green to red or yellow if a fault is detected. 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 (power amplifier over/undercurrent condition or power
failure) and minor alarm (high temperature) contacts are provided.
1.4 RF Signal Connections
The RF signal connections between the RIU and DHU are supported through a pair of type N
female connectors mounted on the RIU front panel. One connector is used for connecting the
forward path coaxial cable and the other connector is used for connecting the reverse path coaxial
cable. The RF signal connection between the RIU and the donor antenna is supported through a
single type N female connector. The single connector is used for connecting the coaxial jumper
cable that links the RIU to the donor antenna. The DHU cannot be connected directly to a donor
antenna and requires an interface device such as the RIU.
Note: To comply with Maximum Permissible Exposure (MPE) requirements, antennas must be
installed to provide at least 20 centimeters (8 inches) of separation from all persons per FCC
47 CFR part 2.1091.
1.5 RF Signal Level Adjustments
The RIU is equipped with two digital attenuators for adjusting the signal levels of the forward
and reverse path RF signals. The attenuators provide an attenuation adjustment range of 0 to 31
dB and can be set in 1 dB increments. In the forward path, this range provides a maximum
gain of +40 dB (with attenuator set to 0) or a minimum gain of +9 dB (with attenuator set to 31
dB). In the reverse path, this range provides a maximum gain of +59 dB (with attenuator set
to 0) or a minimum gain of +28 dB (with attenuator set to 31 dB). Each attenuator is adjustable
by means of two rotary switches which are mounted behind the RIU front panel. Access to
each rotary switch is through a small hole. A small screwdriver is required to adjust the switch
setting. Turning each switch adds or removes attenuation and therefore adjusts the signal level
of the specified signal path.
1.6 Powering
The RIU is powered by 120/240 VAC (50–60 Hz) power which is supplied through a standard
three-conductor AC power cord. The power cord is provided with the RIU 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 RIU internal power supply.
1.7 Cooling
Continuous air flow for cooling is provided by a fan 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 RIU for air intake and exhaust. An alarm is provided that indicates if a high
temperature condition (>58º C/136º F) occurs. The fan may be field-replaced if it fails.
© 2001, ADC Telecommunications, Inc.
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ADCP-75-114 • Issue C • June 2001
1.8 User Interface
The RIU user interface consists of the various connectors, switches, terminals, and LED that
are provided on the RIU front panel. The RIU user interface points are indicated in Figure 3
and described in Table 1.
(1) ANTENNA
CONNECTOR
NOTE: SHOWN WITHOUT
CABLE MANAGEMENT TRAY
(2) AC POWER
ON/OFF SWITCH
(3) AC POWER CORD
CONNECTOR
(4) REVERSE LEVEL
ADJUSTMENT
SWITCHES
(5) FORWARD LEVEL
ADJUSTMENT
SWITCHES
Figure 3. Remote Interface U nit U ser I nt erfac e
Table 1. Remote Interface U nit U ser I nt erfac e
(6) FORWARD
RF OUTPUT
CONNECTOR
(8) ALARM LED
INDICATOR
(7) REVERSE
RF INPUT
CONNECTOR
16651-A
(9) ALARM
CONNECTOR
REF
No.
1
2
3
4
USER INTERFACE
ANTENNA
I/O
POWER
REV LEVEL ADJ
MSB
5
FWD LEVEL ADJ
MSB
6
FORWARD OUT
7
REVERSE IN
8
ALARMS
9
MINOR
DESIGNATION
LSB
LSB
MAJOR Screw-type terminal
N-type female RF
coaxial connector
I/O rocker switch/
circuit breaker
3-wire AC power
cord connector
Rotary switch
Rotary switch
N-type female RF
coaxial connector
N-type female RF
coaxial connector
Multi-colored LED
(Red/Green/Yellow)
connector (14–26
AWG)
DEVICE FUNCTIONAL DESCRIPTION
Used for connecting the donor antenna
coaxial cable.
Provides AC power On/Off control and AC
power over current protection.
Used for connecting the AC power cord.
Used to adjust the reverse path RF signal
level by adding or removing attenuation.
Used to adjust the forward path RF signal
level by adding or removing attenuation.
Used for connecting the RIU to DHU
forward path coaxial cable.
Used for connecting the DHU to RIU
reverse path coaxial cable.
Indicates if the RIU is normal or faulty. (see
Section 3 for a detailed description)
Used for connecting the RIU to an external
alarm system. Includes normally open (NO),
normally closed (NC), and common (COM)
wiring connections.
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© 2001, ADC Telecommunications, Inc.
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