ADC HiGain HRE-450 List 4A User manual

HiGain
HiGain
USER MANUAL
HRE 450
ADC
HRE-450 List 4A Remote Enclosure
Product Catalog: 150-1121-41

150-450-141-02, Issue 2
ii August 18, 1998 HRE-450 List 4A
Revision History of This Manual
To order copies of this document, use document catalog number 150-450-141-02.
Copyright
August 18, 1998
© 1998 ADC DSL Systems, Inc. All rights reserved.
Trademark Information
ADC is a registered trademark of ADC Telecommunications, Inc. HiGain is a registered trademark of ADC DSL Systems, Inc.
No right, license, or interest to such trademarks is granted hereunder, and you agree that no such right, license, or interest
shall be asserted by you with respect to such trademark. Other product names mentioned in this practice are used for
identification purposes only and may be trademarks or registered trademarks of their respective companies.
Disclaimer of Liability
Information contained in this document is company private to ADC DSL Systems, Inc., and shall not be modified, used, copied,
reproduced or disclosed in whole or in part without the written consent of ADC.
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.
Issue Release Date Revisions Made
1August 18, 1998 Initial release
2February 1, 2002 Rebranding

150-450-141-02, Issue 2 Using This Manual
HRE-450 List 4A August 18, 1998 iii
USING THIS MANUAL
The following conventions are used in this manual:
•Monospace type indicates screen text.
•Keys you press are indicated by small icons such as or . Key combinations to be pressed
simultaneously are indicated with a plus sign as follows: + .
•Items you select are in bold.
•Three types of messages, identified by icons, appear in text.
.
INSPECTING SHIPMENT
Upon receipt of the equipment:
•Unpack each container and inspect the contents for signs of damage. If the equipment has been damaged in
transit, immediately report the extent of damage to the transportation company and to ADC DSL Systems,
Inc. Order replacement equipment, if necessary.
•Check the packing list to ensure complete and accurate shipment of each listed item. If the shipment is short
or irregular, contact ADC DSL Systems, Inc. as described in “Appendix B - Product Support” on page 14.If
you must store the equipment for a prolonged period, store the equipment in its original container.
Notes contain information about special circumstances.
Cautions indicate the possibility of personal injury or equipment damage.
YENTER
CTRL ESC

Inspecting Shipment 150-450-141-02, Issue 2
iv August 18, 1998 HRE-450 List 4A

150-450-141-02, Issue 2 Table of Contents
HRE-450 List 4A August 18, 1998 v
TABLE OF CONTENTS
Product Overview_____________________________________________________________________ 1
HRE-450 List 4A Features.................................................................................................................2
HRE-450 List 4A Components..........................................................................................................3
Compatibility .....................................................................................................................................3
Installation___________________________________________________________________________ 5
Inspecting Your Shipment .................................................................................................................5
Locating the Necessary Tools............................................................................................................5
Installing the HRE-450 List 4A.........................................................................................................5
Wiring the Hre-450 List 4A...............................................................................................................8
Installing A Doubler Or Remote Unit ___________________________________________________ 11
Appendix A - Specifications____________________________________________________________ 13
Appendix B - Product Support _________________________________________________________ 14
Certification and Warranty______________________________________________ Inside Back Cover

List of Figures 150-450-141-02, Issue 2
vi August 18, 1998 HRE-450 List 4A
LIST OF FIGURES
1. HRE-450 List 4A Configurations.................................................................................................................... 2
2. HRE-450 List 4A Components........................................................................................................................ 3
3. Locating the HRE-450 List 4A Cover Screw .................................................................................................. 6
4. Bottom of the HRE-450 List 4A...................................................................................................................... 6
5. Locating the Mounting Screw Guides ............................................................................................................. 7
6. Figure 6. HRE-450 List 4A Wiring Diagram.................................................................................................. 8
7. Preparing the Wire Pair for Insertion into the Quiet-Front Connector Modules............................................. 9
8. Locating the QFCM Lug.................................................................................................................................. 9
9. Installing a Remote or Doubler Unit in an HRE-450 List 4A....................................................................... 11
LIST OF TABLES
1. HRE-450 List 4A Components........................................................................................................................ 4

150-450-141-02, Issue 2 Product Overview
HRE-450 List 4A August 18, 1998 1
PRODUCT OVERVIEW
This technical practice describes the HiGain®Remote Enclosure Model HRE-450 List 4A. TheHRE-450 is one
component of a HiGain (T1 transmission) system, which transmits data at up to 1.544 Mbps ontwo unconditioned
copper pairs over the full Carrier Service Area (CSA) range. A HiGain system consists of aline unit and a remote
unit (usually housed in a remote enclosure), and may include up to four doublers to extendthe transmission
distance.
This HRE-450 List 4A is a weatherproof enclosure that houses either one single-slot HiGain Remote Unit
(HRU)or one HiGain Doubler Unit (HDU). The HRE-450 List 4A mounts outdoors on any suitable
above-groundsurface, such as a concrete wall or wooden telephone pole. Because it cannot be pressurized, the
HRE-450 List 4A cannot be installed in an underground location. To reduce emissions, the HRE-450 List 4A
features a metallized gasket around the edges.
Figure 1 on page 2 shows three different HRE-450 configurations for either T1 High-bit-rate-Digital Subscriber
Line(HDSL) circuits or G.703 E1 circuits. The line unit is installed in a Central Office (CO) shelf and the HRU
or HDU is housed in an HRE-450. Optional HDUs provide the ability to double or triple the distance range for
customer applications located outside the CSA.
The HRE-450 List 4A can also be used to support E1 circuits, by housing either an E1 Doubler
Unit (EDU) or E1 Remote Unit (ERU).

Product Overview 150-450-141-02, Issue 2
2 August 18, 1998 HRE-450 List 4A
Figure 1. HRE-450 List 4A Configurations
HRE-450 LIST 4A FEATURES
•Easily mounted on a wall or pole using supplied screws.
•Front cover opens easily, which enables quick inspection or service of enclosed unit.
•Uses weather-sealing cable fittings that protect connections and provide cable strain relief .
•Protects remote or line unit against adverse weather conditions and harmful contaminants.
•Uses Quiet-Front Connector Modules (QFCMs) to provide electrical surge protection and corrosion-resistant
wire.
•Complies with European CE Standards.
The HRE-450 List 4A is not designed to house locally-powered remote units. Therefore, in a
two-doubler system (C above), the remote unit cannot be installed in an HRE-450 List 4A.
Loop 2
Loop 1
Loop 2
Loop 1
Loop 2
Loop 2
Loop 1
Loop 2
Loop 1
Loop 2
Loop 1
SPAN 2
SPAN 2 SPAN 3
SPAN 1
SPAN 1
SPAN 1
LINE
UNIT
REMOTE
UNIT
DOUBLER
2
HRE-450
HRE-450
REMOTE
UNIT
DOUBLER
DOUBLER
1
HRE-450
HRE-450
HRE-450
LINE
UNIT
LINE
UNIT
48 V
REMOTE
UNIT
(A)
(B)
(C)
(A) System with no doublers
(B) System with one doubler
(C) System with two doublers

150-450-141-02, Issue 2 Product Overview
HRE-450 List 4A August 18, 1998 3
HRE-450 LIST 4A COMPONENTS
Figure 2 and Table 1 on page 4 identify the HRE-450 List 4A components.
Figure 2. HRE-450 List 4A Components
COMPATIBILITY
The HRE-450 List 4A is compatible with the following PairGain products:
•HRU-412 HiGain Remote Units, list 6 or higher
•EDU-451 E1 HiGain Doubler Units
•HDU-451 T1 HiGain Doubler Units
Mounting
plate
Mounting bracket
Mounting screw guide
Wiring
diagram
label
Cable lock nut
Cable rifting
Cable stub
Mounting screw guide
3/8 in. padlock
shackle holes
Quiet-front
connector
modules (4)
Air vent/
breather cap
56-pin
card edge
connector
Ground
wire access and
cable lock nut
Ground wire
connector
HRE-450 L
FIELDC.O.
7
1
5
13
CONNECTIONS FOR HDU/EDU
CONNECTIONS FOR HRU/ERU
DS1/G.703-RCV DS1/G.703-XMT
15
41 55
47
WHT
GND ORN
HDSL IN 1 HDSL IN 2 DS1 - RCV DS1 - XMT
SLT BLU RED BLUWHT WHT
49
TTT1 T1RRR1 R1

Product Overview 150-450-141-02, Issue 2
4 August 18, 1998 HRE-450 List 4A
Table 1. HRE-450 List 4A Components
Component Function
Mounting bracket Secures the HRE-450 List 4A to the installation location.
Mounting screw guides Indicate where to drill the mounting screw holes.
Mounting plate Secures the remote unit or doubler in the enclosure.
Wiring diagram label Provides installation wiring diagram for both DS1(T1) and G.703 circuits.
56-pin card edge connector Provides card edge connectivity for the installed remote or doubler unit.
Quiet-Front Connector Modules Provides Tip and Ring wiring entry holes for HDSL connectors J1 through J4.
Ground wire connector Used to attach the grounding wire.
Ground wire access Provides access for insertion of ground wire lug.
Air vent/breather cap Permits air circulation and keeps internal atmosphere free of harmful contaminants.
3/8 in. padlock shackle holes Used to attach a padlock for security.
Cable stub Provides access for transmit and receive HDSL connector wires.
Cable lock nut Secures the cable rifting and stub to the enclosure.
Cable rifting Provides strain relief for the stub.

150-450-141-02, Issue 2 Installation
HRE-450 List 4A August 18, 1998 5
INSTALLATION
This section describes how to prepare to install the HRE-450 List 4A, and how to install and wire the unit.
INSPECTING YOUR SHIPMENT
When you receive the equipment, inspect it for signs of damage. If the equipment has been damaged in transit,
immediately report the extent of damage to the transportation company and to ADC.
In addition to this technical practice, your shipment should consist of:
•One HRE-450 List 4A enclosure
•Installation Kit containing:
–three wood screws (#10 x 1.5 in.) (two for installation, one spare)
–three anchor nuts (#10 x 1 in.) (two for installation, one spare)
–three flat washers (#10 CPS/ZPS) (two for installation, one spare)
–one cable tie (5.5 in. length, 0.15 in. width)
If any of the above items are missing, or the shipment is damaged, please contact your ADC sales representative.
LOCATING THE NECESSARY TOOLS
To install the HRE-450 List 4A, you need the following tools:
•No. 2 screwdriver
•Drill
•Wood or metal or concrete drill bits (depending on installation surface)
•Hammer
•Two Type 216C ( 7/16 in.) wrenches
•3/16 in. can wrench
INSTALLING THE HRE-450 LIST 4A
Install the HRE-450 List 4A onto a concrete or wood surface, such as a wall ortelephone pole, using the hardware
provided in the Installation Kit. The HRE-450 must be installed above ground, in a location that provides access
to wiring and grounding connections. To install the unit:

Installation 150-450-141-02, Issue 2
6 August 18, 1998 HRE-450 List 4A
1Using a 3/16 in. can wrench, or an adjustable wrench, loosen the screw on the HRE-450 List 4A cover, then
remove the cover.
Figure 3. Locating the HRE-450 List 4A Cover Screw
2Make sure that each of the two compression connector nuts is secure. If a nut is not secure, tighten it using
your fingers.
Figure 4. Bottom of the HRE-450 List 4A
3Place the HRE-450 List 4A in the selected installation location, then mark the mounting screw hole locations
on the installation surface, using the mounting screw guides (see Figure 5).
ADC
HRE 450
TELEPHONE COMPANY PROPERTY
Cover screw
Mounting bracket
Compression connector nuts
Cable stubGround wire access

150-450-141-02, Issue 2 Installation
HRE-450 List 4A August 18, 1998 7
Figure 5. Locating the Mounting Screw Guides
4Do one of the following:
–If the installation location is wood, use a drill with a wood or metal drill bit to drill the mounting screw
holes into the wooden surface.
–If the installation location is concrete, use a drill with a concrete drill bit that is slightly smaller than the
diameter of the anchor nuts to drill the mounting screw holes into the concrete surface.
5Insert the two anchor nuts into the mounting screw holes and tap the nuts into place with a hammer.
6While holding the HRE-450 List 4A in place, place a washer over one of the mounting screw holes and, using
a #2 screwdriver, screw one of the provided wood screws into the mounting hole.
7While holding the HRE-450 List 4A in place, place a washer over the other mounting screw hole and, using
a #2 screwdriver, screw another of the provided screws into the mounting screw hole.
ADC
HRE 450
TELEPHONE COMPANY PROPERTY
Mounting screw guides

Installation 150-450-141-02, Issue 2
8 August 18, 1998 HRE-450 List 4A
WIRING THE HRE-450 LIST 4A
Figure 6. Figure 6. HRE-450 List 4A Wiring Diagram
Connect the HRE-450 List 4A to the Signal Cables and Ground Wire as follows (see Figure 6 for a wiring
overview):
1Loosen the compression connector nuts on the bottom of the HRE-450 List 4A using one of the
followingmethods:
–Use your hand to turn the compression connector nuts counterclockwise (see Figure4onpage8for
compression connector nut location).
–If the compression connector nuts are too tight to loosen by hand, use groove-joint pliers to hold the cable
fitting center locknut, then use another pair of groove-joint pliers to turn each compression nut
counterclockwise.
2Feed solid ground wire, up to #6 AWG, through the HRE-450 List 4A ground wire access (see Figure 2 on
page 3 for the ground wire access location).
3Strip approximately 1/2in. of insulation from the end of the ground wire.
4Insert the stripped wire into the ground wire access, then tighten the ground wire connector.
5Use your fingers to tighten the ground wire connector (see Figure 2 on page 3 for the ground wire connector
location).
6Loosen the cable lock nut (see Figure2onpage3for cable lock nut location).
7Insert approximately 6 in. of interface telephone cable through the exposed cable stub fitting hub.
8Slit the ends of the leads of each drop-wire pair and bend as shown in Figure 7
The HRE-450 List 4A features exposed metal around the mounting hole guides, providing an
alternative chassis ground connection.
HRE-450 L CONNECTIOPNS FOR HDU/EDU
CONNECTIONS FOR HRU/ERU
FIELDC.O.
7
1
*
**
5
13 15
41 55
47
WHT ORN
HDSL IN 1
GND HDSL IN 2 HDSL OUT 1
DS1/G.703-RCV DS1/G.703-XMT
HDSL OUT 2
SLT BLU RED BLUWHT WHT
49
TTT1 T1RRR1 R1

150-450-141-02, Issue 2 Installation
HRE-450 List 4A August 18, 1998 9
Figure 7. Preparing the Wire Pair for Insertion into the Quiet-Front Connector Modules
9UseaType216C(
7/16 in.) wrench to rotate each QFCM lug 1/4turn counterclockwise to open the connectors.
Figure 8. Locating the QFCM Lug
10 Insert the first pair’s Tip wire into the left Wire-Entry hole on the left QFCM, until the wire touches the ends
of the transparent plastic caps.
11 Insert the first pair’s Ring wire into the right Wire-Entry hole on the left QFCM, until the wires touch the ends
of the transparent plastic caps. (See Figure6onpage9for a complete wiring diagram).
12 While holding the Tip and Ring wires in place with your fingers, use a Type 216C ( 7/16 in.) wrench to rotate
each QFCM lug 1/4turn clockwise.
Do not strip the drop-wire pair insulation.
Do not rotate the QFCM lug more than 1/4turn, or it may fall off the QFCM.
50.8 mm
(2")
Wire-entry holeWire-entry hole
Q
F
C
M lug
Wire-entry hole

Installation 150-450-141-02, Issue 2
10 August 18, 1998 HRE-450 List 4A
13 Using your fingers (do not use a pliers or wrench), tighten the cable lock nut. If necessary, use groove-joint
pliers to hold each cable rifting center locknut while tightening each compression nut with your fingers.
14 Repeat Step 10 through Step 13 using the second wire pair and the right QFCM.
15 Use cable ties to dress the wires that enter the enclosure box and connect to the QFCM terminals, per local
practice.
16 Position and secure the ground wire along the installation surface and connect it to a nearby ground, per local
practice.
Do not rotate the QFCM lug more than 1/4turn.

150-450-141-02, Issue 2 Installing A Doubler Or Remote Unit
HRE-450 List 4A August 18, 1998 11
INSTALLING ADOUBLER ORREMOTE UNIT
To install a doubler or remote unit in the HRE-450 List 4A:
1Loosen the wingnuts on the strap, then pull the strap away from the mounting plate.
2Slide the doubler or remote unit into the slot until firmly seated.
If Vdc is present, the doubler or remote unit begins an initial power-on cycle within 30 seconds.
Figure 9. Installing a Remote or Doubler Unit in an HRE-450 List 4A
3Verify the following:
–If the installed unit is a doubler, and the remote unit is not yet installed in the system, the doubler
completes its initial power-on cycle and two HDSL IN LEDs light green.
–If the installed unit is a doubler, and the remote unit is installed in the system, the doubler completes its
initial power-on cycle and the two HDSL IN and two HDSL OUT LEDs light green.
–If the installed unit is a remote unit, the unit completes its initial power-on cycle and both front-panel
HDSL LEDs light green.
Wingnuts
Strap
Remote or
doubler unit

Installing A Doubler Or Remote Unit 150-450-141-02, Issue 2
12 August 18, 1998 HRE-450 List 4A
4Replace the strap, then tighten the wingnuts.
5Install the HRE-450 List 4A cover and tighten the screw to approximately 6 to 8 in-lbs. (maximum) torque
to secure.

150-450-141-02, Issue 2 Appendix A - Specifications
HRE-450 List 4A August 18, 1998 13
APPENDIX A-SPECIFICATIONS
This section describes the HRE-450 List 4A technical specifications.
Physical
Material Steel
Finish Zinc plated
Mounting concrete wall or wooden telephone pole
Enclosure Box
Height 9.31 in. (23.65 cm)
Width 7.31 in. (18.57 cm)
Depth 2.31 in. (5.87 cm)
Enclosure Lid
Height 10.25 in. (26 cm)
Width 7.5 in. (19.1 cm)
Depth 2.69 in. (6.83 cm)
Quiet Front Connector Modules (QFCM)
Electrical Protection Each QFCM module contains a 60 A, three-element,
gas-tube surge protector with a 265-600 Vdc
breakdown voltage at breakdown rate of 2000
V/second
Specification compliance PB 80 Heavy Duty, Bellcore TP-TS-1-000073, GTS
8376, UL 497
Environmental
Operating Temperature - 40 C to +65 C (40°F to 149° F)
Operating Humidity 5 to 95% non-condensing

Appendix B - Product Support 150-450-141-02, Issue 2
14 August 18, 1998 HRE-450 List 4A
APPENDIX B-PRODUCT SUPPORT
ADC Customer Service Group provides expert pre-sales and post-sales support and training for all its products.
Technical support is available 24 hours a day, 7 days a week by contacting the ADC Technical Assistance Center
(TAC).
Sales Assistance
800.366.3891 ext. 73000 (USA and
Canada) or
952.917.3000
Fax: [phone]
•Quotation Proposals
•Ordering and Delivery
•General Product Information
Systems Integration
800.366.3891, ext. 73000 (USA and
Canada) or
952.917.3000
•Complete Solutions (from concept to
installation)
•Network Design and Integration Testing
•System Turn-Up and Testing
•Network Monitoring (upstream or downstream)
•Power Monitoring and Remote Surveillance
•Service/Maintenance Agreements
•Systems Operation
ADC Technical Assistance Center
800.638.0031 (USA and Canada) or
714.730.3222
Fax: [phone]
Email: [e-mail]
•Technical Information
•System/Network Configuration
•Product Specification and Application
•Training (product-specific)
•Installation and Operation Assistance
•Troubleshooting and Repair/Field Assistance
Online Technical Support •www.adc.com/Knowledge_Base/index.jsp
Online Technical Publications •www.adc.com/library1/
Product Return Department
800.366.3891 ext. 73748 (USA and
Canada) or
952.917.3748
Fax: [phone]
Email: repair&[e-mail]
•ADC Return Material Authorization (RMA)
number and instructions must be obtained
before returning products.
All 800 lines are toll-free in the USA and Canada.