ADC HiGain HLU-200 User manual

HiGain

USER MANUAL

HLU200 L1A

AHT1U

LOOP

FAIL

HDSL

SETUP

(db)

232

DCE

HLU-200 List 1A Line Unit

ProductCatalog: 350-200-111-02

CLEI: SLL2U6LG

350-200-111-02, Issue 2

ii October 4, 1999 HLU-200 List 1A

Revision History of This Manual

To order copies of this document, use document catalog number

350-200-111-02.

October 4, 1999

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 inthis document is company privateto 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

1October 4, 1999 Initial Release

2February 14, 2002 ADC Rebranding

350-200-111-02, Issue 2 Using This Manual

HLU-200 List 1A October 4, 1999 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 indicatedwith a plus sign

as follows: + .

•Items you select are in bold.

Three types of messages, identified by icons, appear in text.

UNPACK AND INSPECT YOUR SHIPMENT

Upon receipt of the equipment:

•Unpack each container and inspect the contents for signs of damage. If

theequipmenthasbeendamaged in transit, immediately report theextent

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 Product Support on page 23. 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.

The Electrostatic Discharge (ESD) symbol indicates that a

deviceorassemblyissusceptibletodamagefromelectrostatic

discharge.

YENTER

CTRL ESC

Table of Contents 350-200-111-02, Issue 2

iv October 4, 1999 HLU-200 List 1A

TABLE OF CONTENTS

Overview________________________________________________1

Compatibility............................................................................2

Front Panel ...............................................................................3

Installation ______________________________________________5

Setting the HDSL Line Voltage Option...................................5

Installing the HLU-200 ............................................................6

Provisioning _____________________________________________7

Using the Mode and Select Buttons .........................................7

Default Settings........................................................................8

Using the Craft Port..................................................................8

System Settings ........................................................................9

Troubleshooting_________________________________________12

Alarms....................................................................................12

Loopbacks ..............................................................................13

Four-Character Diagnostic Messages.....................................15

Specifications ___________________________________________17

Power Parameters _______________________________________19

Non Doubler AHT1U Applications .......................................19

Doubler AHTIU Applications................................................20

Product Support_________________________________________23

Certification andWarranty_____________ Inside Back Cover

350-200-111-02, Issue 2 Overview

HLU-200 List 1A October 4, 1999 1

OVERVIEW

The ADC®HiGain®Line Unit Model HLU-200 List 1A (AHT1U) is an

asynchronous DS1 interface unit that plugs into the Channel Bank Assembly

(CBA) of a DSC Litespan®2000 optical loop carrier system to provide a

High-bit-rate Digital Subscriber Line (HDSL) interface. The HLU-200 is

essentially an AT1U line unit with the T1line interface circuit replaced by an

HDSL interface circuit. When used in conjunction with a HiGain Remote

Unit (HRU), the system provides 1.544 Mbps transmission on two

unconditioned copper pairs over the full Carrier Serving Area (CSA) range.

The CSA includes loops of up to 12,000 feet of AWG 24 or 9,000 feet of

AWG 26 wire, including bridged taps. The CSA range can be doubled with a

HiGain Doubler Unit (HDU) or tripled with two HDUs.

This guide describes HLU-200 List 1A operationwhen used with andwithout

doublers. The HRU can be placed up to 3000 feet into the network for extra

range withoutdoublers. However, this requires an external Network Interface

Device (NID) to be placed at the Network Interface (NI), and the HRU must

have the Smart-Jack (LB) option set to Disable. The HLU-200 List 1A

powers both the HDU and HRU, but the HRU must be locally powered for

two-doubler applications.

The HLU-200 List 1A is different from the HLU-200 List 1F only in that the

+5 V fuse has been increased from 0.75 A to 1.0 A for improved reliability.

Overview 350-200-111-02, Issue 2

2 October 4, 1999 HLU-200 List 1A

COMPATIBILITY

The HLU-200 List 1A operates as a channel card in a DSC Litespan-2000

Channel Bank. The Litespan-2000 system consists of a Central Office (CO)

bank connected to a remote bank over an Optical Carrier 3 (OC3) fiber link.

Each bank has slots for 56-channel plug-ins. The HLU-200 is typically

installed in the remote bank, where it is used to transmit a T1 payload to a

remote HRU-412. The transmission is over two unconditioned HDSL cable

pairs, with or without doublers. The HLU-200 is the HDSL equivalent to an

AT1U channel card, used to transmit a T1 payload to a remote location over

conventional T1 spans.

The HLU-200 List 1A is compatible with Litespan-2000 software releases

7.1.x and 8.1.x and above. The HLU-200 List 1A is not compatible with the

Litespan-2000 Management System and must be maintained, provisioned

and monitored from the front-panel RS-232 maintenance port.

The HLU-200 can be cross-connected to another HLU-200 or to another

asynchronous T1 channel unit in the same channel bank or in the distant

channel bank. These point-to-point dedicated circuits are initiated by issuing

the standard TL1-based cross-connect commands to the Maintenance and

Test Interface (MTI) card. The MTI card identifies the HLU-200 List 1A as

an AHT1U plug.

350-200-111-02, Issue 2 Overview

HLU-200 List 1A October 4, 1999 3

HLU200 L1A

AHT1U

LOOP

FAIL

HDSL

SETUP

(db)

232

DCE

Status LEDs

RS-232 craft

port

Four-character display

Mode and Select buttons

Pull tab

Test ports

FRONT PANEL

Figure 1. HLU-200 List 1A Front Panel

Overview 350-200-111-02, Issue 2

4 October 4, 1999 HLU-200 List 1A

Table 1. Front Panel Features

Name Function

Status LEDs Indicates system status.

Loop LED Lights whenever any of the HLU-200 system loopbacks are in

effect.

Flashes when the AHT1U is in the armed state for an intelligent

repeater loopback command.

Fail LED A red LED controlled by the CBA. Used with revision 7.1.2, and

higher software versions, this LED lights when the HLU-200 is

first plugged into the CBA and remains lit until the CBA has

finished program download and communication with the

HLU-200. It also lights whenever there is a service-affecting

failurewithintheCBA.(TheLEDremainslitatalltimeswhenthe

HLU-200 is used with revision 7.1.1 CBAs.)

HDSL LED Flashes green during HDSL synchronization.

Lights steady green when both HDSL loops are in sync and no

minor alarm conditions exist.

Flashes red for any of the alarm conditions, or if the on-board

48 V fuse opens.

Lights steady yellow when a self-test is in progress.

System option buttons MODE and SEL buttons are used to set system options.

Four-character display Four-characterLCD that provides status messages for HDSL,

signal-to-noise margin, optional settings, and alarms.

RX and test ports Splitting access and bridging jacks (210-Bantam-type).

RS-232 craft port Accessed through a DB9/210 adapter (p/n 120-1035-01,

shipped with every unit) and configured as Data

Circuit-terminating Equipment (DCE) that allows you to control

the HLU-200 through a maintenance terminal (or a PC with

terminal emulation software).

Pull tab Used to remove the HLU-200 from the CBA.

Unlike the HLU-200 List 1F, the four-character display of the

HLU-200 List 1A does not illuminate when first inserted into a

shelf slot. This conserves power if the entire CBA is power

cycled. The List 1A display illuminates for five minutes when

either of the front-panel buttons, MODE or SEL, is pressed.

350-200-111-02, Issue 2 Installation

HLU-200 List 1A October 4, 1999 5

INSTALLATION

Upon receipt of the equipment, visually 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.

SETTING THE HDSL LINE VOLTAGE OPTION

The HDSL line powering voltage is set by the S1 switch. Bipolar (BIP) sets

the HDSL line voltage to +65 Vdc on loop 2 (+100 Vdc for doubler circuits)

and -65 Vdc on loop 1 (-100 Vdc for doubler circuits). This setting reduces

the maximum ground referenced voltage but applies positive voltage to the

cable pairs, which could accelerate corrosion on the cable pairs. Unipolar

(UNI) sets the HDSL line voltage to 0 Vdc on loop 2 and to -130 Vdc on loop

1 (-200 Vdc for doubler circuits). This setting keeps the HDSL cable pair

voltage at or below ground potential, thereby avoiding corrosion problems

caused by cable voltages more positive than ground.

The line voltage power supply, used for both options, is ground referenced

and also ground isolated by 200 k9. The ground isolation reduces problems

due to induced noise currents and large surge voltages that are ground

referenced. Ground isolation also reduces ground-fault currents, which

improves product safety. The safety issue depends solely on the differential

voltage across Loop 1 and Loop 2 and is independent of the S1 setting.

Installation 350-200-111-02, Issue 2

6 October 4, 1999 HLU-200 List 1A

INSTALLING THE HLU-200

To install the HLU-200 into a Litespan-2000 channel bank:

1Slide the HLU-200 into the card guides for the desired slot, then push the

unit in until it touches the channel-bank backplane card-edge connector.

2Carefully push the unit in until it is entirely within the card guide, making

sure that the unit is properly seated.

Figure 2. Installing the HLU-200

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