ADC Migration Modules DSX-3 User manual

ADCP-80-353
Issue 2
August 2002
1021186 Rev B
DSX-3 (DSX-4U-24)
Rear Cross-Connect System
Installation Guide

ADCP-80-353
Issue 2
August 2002
1021186 Rev B
DSX-3 (DSX-4U-24)
Rear Cross-Connect System
Installation Guide

ADCP-80-353 • Issue 2 • August 2002 • Preface
Page ii
COPYRIGHT
© 2002, ADC Telecommunications, Inc.
All Rights Reserved
Printed in the U.S.A.
REVISION HISTORY
TRADEMARK INFORMATION
ADC is a registered trademark of ADC Telecommunications, Inc.
DISCLAIMER OF LIABILITY
Contents herein are current as of the date of publication. ADC reserves the right to change the contents without prior notice. In no
event shall ADC be liable for any damages resulting from loss of data, loss of use, or loss of profits and ADC further
disclaims any and all liability for indirect, incidental, special, consequential or other similar damages. This disclaimer of
liability applies to all products, publications and services during and after the warranty period.
This publication may be verified at any time by contacting ADC’s Technical Assistance Center at 1-800-366-3891, extension 73475
(in U.S.A. or Canada) or 952-917-3475 (outside U.S.A. and Canada), or by e-mail to [e-mail].
ISSUE DATE REASON FOR CHANGE
1 01/1998 Original
2 08/2002 Non-technical update.
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]

ADCP-80-353 •Issue 2 •August 2002 •Preface
Page iii
© 2002, ADC Telecommunications, Inc.
TABLE OF CONTENTS
Content Page
ABOUT THIS MANUAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v
RELATED PUBLICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v
ADMONISHMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v
SECTION 1:
DESCRIPTION
1 GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1
2 FEATURES AND BENEFITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-2
2.1 Modularity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
2.2 Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-2
2.3 Tracer Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-2
2.4 Cable Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-2
3 FUNCTIONAL DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
4 PHYSICAL DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-4
4.1 DSX-4U Circuit Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-7
4.2 DSX-4U Chassis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-9
4.3 Fuse Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-9
4.4 Cable Rings and Troughs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
4.5 Cable Brackets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
4.6 Cross-Connect System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
5 SYSTEM SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
SECTION 2:
INSTALLATION
1 GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1
2 OFFICE REQUIREMENTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1
2.1 Space and Floor Loading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1
2.2 Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1
2.3 Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-2
2.4 Cable Types and Lengths . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-2
3 INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3
3.1 Bay Installation/Expansion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3
3.2 Circuit Module Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
3.3 Installation of Office/Equipment Cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-5
3.4 Cross-Connect Jumpers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-9
4 POWER APPLICATION AND SYSTEM CHECKOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
SECTION 3:
TABLE OF CONTENTS

ADCP-80-353 •Issue 2 •August 2002 •Preface
Page iv
© 2002, ADC Telecommunications, Inc.
TABLE OF CONTENTS
Content Page
GENERAL INFORMATION
1 WARRANTY/SOFTWARE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
2 SOFTWARE SERVICE AGREEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
3 REPAIR/EXCHANGE POLICY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
4 REPAIR CHARGES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
5 REPLACEMENT/SPARE PRODUCTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
6 RETURNED MATERIAL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
7 CUSTOMER INFORMATION AND ASSISTANCE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
TABLE OF CONTENTS

ADCP-80-353 •Issue 2 •August 2002 •Preface
Page v
© 2002, ADC Telecommunications, Inc.
ABOUT THIS MANUAL
This Installation Guide describes ADC’s DSX-3 (DSX-4U-24) Rear Cross-Connect System and
provides all instructions necessary to install the system.
RELATED PUBLICATIONS
Listed below are related manuals and their publication numbers. Copies of these publications can
be ordered by contacting the Technical Assistance Center at 1-800-366-3891, extension 73475
(in U.S.A. or Canada) or 952-917-3475 (outside U.S.A. and Canada).
DS3 Digital Signal Cross-Connect (DSX-3) System Applications Guide 80-323
Unequal Flange Rack Installation Instructions 80-345
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.
Title ADCP Number
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.

ADCP-80-353 •Issue 2 •August 2002 •Preface
Page vi
© 2002, ADC Telecommunications, Inc.
DSX-3 (DSX-4U-24) REAR CROSS-CONNECT SYSTEM
USE
3 AMP
FUSE
MAXIMUM
50 AMP
MAXIMUM
TOTAL BUSS
AMPERAGE
BLOWN FUSE
INDICATOR
48
12 16
8666-A

ADCP-80-353 •Issue 2 •August 2002 •Section 1: Description
Page 1-1
© 2002, ADC Telecommunications, Inc.
SECTION 1: DESCRIPTION
1 GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1
2 FEATURES AND BENEFITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1
2.1 Modularity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
2.2 Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-2
2.3 Tracer Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-2
2.4 Cable Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-2
3 FUNCTIONAL DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
4 PHYSICAL DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-4
4.1 DSX-4U Circuit Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-7
4.2 DSX-4U Chassis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-9
4.3 Fuse Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-9
4.4 Cable Rings and Troughs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
4.5 Cable Brackets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
4.6 Cross-Connect System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
5 SYSTEM SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
_________________________________________________________________________________________________________
1 GENERAL
This section describes ADC’s DSX-3 (DSX-4U-24) Rear Cross-Connect System and its
applications in large and small offices, digital loop carriers, and customer premises. The system
provides for test access, patch, cross-connect, and monitor functions in 75 ohm digital
transmission systems operating with a common signal format and bit rate. Bit rates of digital
systems in which this cross-connect system may be used are:
• 2.048 megabits per second.
• 8.448 megabits per second.
• 34.368 megabits per second.
• 51.84 megabits per second.
• 139.264 megabits per second.
• 155.52 megabits per second.
The DSX-3 (DSX-4U-24) Rear Cross-Connect System is typically used between multiplexing/
demultiplexing or digital switch equipment and a transmission medium such as digital coaxial
cable, microwave radio, or fiber optics. It is recommended that signals from all digital
equipment are maintained at an equal level at the cross-connect system by means of office-
provided pads and equalizers which compensate for the various cable lengths. This allows for
testing, patching, and rearranging of compatible equipment at the cross-connect system without
having to readjust signal levels.
Content Page

ADCP-80-353 •Issue 2 •August 2002 •Section 1: Description
Page 1-2
© 2002, ADC Telecommunications, Inc.
2 FEATURES AND BENEFITS
2.1 Modularity
The DSX-3 (DSX-4U-24) Rear Cross-Connect System is modular for easy expansion at the
user’s site, and may provide any number of bi-directional cross-connects in multiples of 120 (up
to 240 equipment terminations) per 2.13 meter (7 foot) bay. This allows for installation of a
minimal system configuration to meet the immediate needs of a site, and then expanding it as
necessary by adding individual DSX-4U circuit modules. Each cross-connect system consists of
up to 240 DSX-4U circuit modules (two per cross-connect) plugged into a 2.13 m × 48.26 cm ×
30.48 cm (7 foot × 19 inch × 12 inch) equipment bay.
2.2 Connectors
The DSX-3 (DSX-4U-24) Rear Cross-Connect System has BNC connectors for terminating
coaxial cross-connect (XO and XI) and equipment IN/OUT (O and I) cabling, and pin jacks for
interconnecting of tracer lamps. Patching and monitoring is accomplished by means of standard
or midsize coaxial jacks located on the front of the module.
2.3 Tracer Lamps
A red flashing light emitting diode (LED) tracer lamp is located at the top of each DSX-4U
circuit module for quick and easy identification of cross-connected circuits.
2.4 Cable Management
Unequal flange (duct type) racks and spacers provide space for routing office/equipment cables
to and from the various shelves in the cross-connect system bay. Cable brackets are provided on
each side at the rear for fastening of the cables to the bay. Vertical and horizontal rings are
provided at the rear of the bay for orderly routing of cross-connect cables between circuit
modules on the bay, and cable troughs at the top and bottom allow for orderly cross-connect
cabling between bays.
3 FUNCTIONAL DESCRIPTION
The DSX-3 (DSX-4U-24) Rear Cross-Connect System consists of up to 240 individual DSX-
4U circuit modules, two of which are shown schematically in Figure 1-1. Each circuit module
accommodates the input and output of one digital equipment unit, and two circuit modules are
required for each cross-connect.
Note: ADC recommends spacing of 25.4 cm (10.0 inches) between bays to avoid the
possibility of cable congestion.

ADCP-80-353 •Issue 2 •August 2002 •Section 1: Description
Page 1-3
© 2002, ADC Telecommunications, Inc.
Figure 1-1. Two DSX-4U Circuits
Each circuit module has connectors and jacks for terminating office/equipment cables and for
cross-connecting and patching the various office/equipment units together. Cabling from office
equipment is connected to DSX-4U equipment IN/OUT connectors, and any equipment input or
output may then be connected to any other equipment input/output by means of jumpers
connected to the cross-connect connectors. Equipment inputs and outputs may also be tested or
temporarily patched to other equipment inputs and outputs by means of patch cords plugged
into the DSX-4U patch jacks.
A typical DSX-4U circuit arrangement is shown in Figure 1-2. Office equipments A, B, and C
are connected to the IN/OUT connectors of three different DSX-4U circuit modules. Office
equipments A and B are then connected together at the DSX-4U circuit modules by temporary
patch cords. The corresponding tracer lamp (TL) terminals are also jumpered together by the
messenger cord in the cross-connect cable. Cross-connected equipments A and B can now be
identified, monitored, and tested as follows:
1. Circuit Identification - Pulling any lamp switch (LS) outward causes the tracer lamp at
each end of the corresponding cross-connect cable to flash for approximately 30 seconds
and then remain lit until the lamp switch (LS) is pushed back in. This gives a visual
indication of the equipment units that are cross-connected together.
2. Bridged Monitoring and Testing - Monitor or test equipment patched into the MON jack
of either circuit module allows testing without interrupting the signals between the A and
B equipment.
3. Split-Circuit Testing - Test equipment patched into an IN or OUT jack splits the A-to-B
equipment circuit for direct access testing of either equipment unit.
1266-D
X-O/
X-I
OUT
MON
IN
X-O/
X-I
GND
–48V
LAMP
SWITCH
LAMP
SWITCH
GND TL TL
–48V
MESSENGER
CORD
EQPT
B
MON
OUT
IN
EQPT
A
X-IN
X-OUT
X-IN
X-OUT
OUT
IN
OUT
IN
=EQUIPMENT IN OUT CONNECTOR
= CROSS-CONNECT CONNECTOR
= PATCH JACK
= PIN JACK