hst_t1_manual_rev a.pdf

Acterna HST-3000T1 Testing

Users Guide

HNotice Every effort was made to ensure that the information in this document was accurate at the time of printing. However, infor-mation is subject to change without notice, and Acterna reserves the right to provide an addendum to this document with information not available at the time that this document was created.

Copyright Tomto

Trademarks Atc

MImo

WT

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Orderinginformation

TDTTuST-3000 T1 Testing Users Guide Revision A iii

Copyright 2004 Acterna, LLC. All rights reserved. Acterna, he Keepers of Communications, and its logo are trademarks f Acterna, LLC. All other trademarks and registered trade-arks are the property of their respective owners. No part of

his guide may be reproduced or transmitted electronically or therwise without written permission of the publisher.

cterna, HST-3000, and HST-3000C are trademarks or regis-ered trademarks of Acterna in the United States and/or other ountries.

icrosoft, Windows, Windows NT, Excel, HyperTerminal, and nternet Explorer are either trademarks or registered trade-arks of Microsoft Corporation in the United States and/or

ther countries.

estell is a trademark or registered trademark of Westell echnologies, Inc.

EL is a trademark or registered trademark of XEL Commu-ications, Inc.

pecifications, terms, and conditions are subject to change ithout notice. All trademarks and registered trademarks are

he property of their respective companies.

his guide is a product of Acterna's Technical Information evelopment Department, issued as part of the HST-3000. he ordering number for a printed users guide is ML-039801. he ordering number for a CD-ROM containing all HST-3000 ser documentation is AC-039401.

iv H

FederalCommunications

Commission (FCC)Notice

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential instal-lation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio ce

Ttmam

Itet

Idumt

Industry CanadaRequirements

TI

CnST-3000 T1 Testing Users Guide Revision A

ommunications. However, there is no guarantee that interfer-nce will not occur in a particular installation.

his device complies with Part 15 of the FCC Rules. Opera-ion is subject to the following two conditions: (1) This device ay not cause harmful interference, and (2) This device must ccept any interference received, including interference that ay cause undesired operation.

f this equipment does cause harmful interference to radio or elevision reception, which can be determined by turning the quipment off and on, the user is encouraged to try to correct he interference by one or more of the following measures:

Reorient or relocate the receiving antenna.Increase the separation between the equipment and receiver.Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.Consult the dealer or an experienced radio/TV technician for help.

n order to maintain compliance with the limits of a Class B igital device Acterna requires that quality interface cables be sed when connecting to this equipment. Any changes or odifications not expressly approved by Acterna could void

he user's authority to operate the equipment.

his Class B digital apparatus complies with Canadian CES-003.

et appareil numrique de la classe B est conforme la orme NMB-003 du Canada.

HC

About This Guid

PATHHSTC

Chapter 1 GOT1 connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4Launching an application . . . . . . . . . . . . . . . . . . . . . . . . . 6Accessing the test configuration menus . . . . . . . . . . . . 7Instrument settings and user preferences . . . . . . . . . . . 9ST-3000 T1 Testing Users Guide Revision A vontents

e xi

urpose and scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xiissumptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xiierminology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xiiST-3000 T1 testing users guide . . . . . . . . . . . . . . . . . xiiiST-3000 base unit users guide . . . . . . . . . . . . . . . . . . xiiiafety and compliance information . . . . . . . . . . . . . . . . xivechnical assistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . xivonventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xv

etting started 1verview and options . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Contents

vi H

Chapter 2 T1 and FT1 testing 11About testing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12Test modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13Status LEDs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14Monitoring a channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16MTCPDVT

Chapter 3 TAOSMTVT

Chapter 4 VAOSVST-3000 T1 Testing Users Guide Revision A

easuring timing slips . . . . . . . . . . . . . . . . . . . . . . . . . . . 25erminate testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27onfiguring user-defined loop codes. . . . . . . . . . . . . . . 41ulse shape analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43rop and insert testing . . . . . . . . . . . . . . . . . . . . . . . . . . 47iewing test results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56roubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

1 DDS testing 59bout testing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60perating modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60tatus LEDs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61onitoring a DDS channel . . . . . . . . . . . . . . . . . . . . . . . . 63

erminate testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70iewing test results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82roubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

oice Frequency (PCM) Analysis 85bout VF analysis. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86perating modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87tatus LEDs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87F test options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88

Quiet tone test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89Holding tone test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89Three tone test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89Single tone test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89Frequency sweep test . . . . . . . . . . . . . . . . . . . . . . . . . 89Impulse noise test . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

Contents

H

User-defined signaling bits . . . . . . . . . . . . . . . . . . . . . 90Performing VF analysis. . . . . . . . . . . . . . . . . . . . . . . . . . 90Viewing test results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100

Chapter 5 PCM Signaling Analysis 101ATST

MPVSS

Chapter 6 IA

SOHUSPUDTPRST-3000 T1 Testing Users Guide Revision A vii

bout PCM signaling analysis . . . . . . . . . . . . . . . . . . . 102est modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103tatus LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105runk type signaling . . . . . . . . . . . . . . . . . . . . . . . . . . . 106

Standard E & M signaling . . . . . . . . . . . . . . . . . . . . . 107Loop start signaling . . . . . . . . . . . . . . . . . . . . . . . . . . 107Ground start signaling . . . . . . . . . . . . . . . . . . . . . . . . 109

onitoring a call . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .112lacing or receiving calls . . . . . . . . . . . . . . . . . . . . . . . .119iewing test results . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126aving signaling events . . . . . . . . . . . . . . . . . . . . . . . . 127aving test results. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127

SDN PRI testing 129bout ISDN PRI testing . . . . . . . . . . . . . . . . . . . . . . . . . 130

Whats new . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130Features and capabilities . . . . . . . . . . . . . . . . . . . . . 131

tatus LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132perating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133eadset connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134sing the Restart soft key . . . . . . . . . . . . . . . . . . . . . . 134etting up the phone book . . . . . . . . . . . . . . . . . . . . . . 135lacing calls on the primary T1 . . . . . . . . . . . . . . . . . . 137sing the HST in Multiple Call mode . . . . . . . . . . . . . . 150isconnecting a call . . . . . . . . . . . . . . . . . . . . . . . . . . . 151ransmitting DTMF tones . . . . . . . . . . . . . . . . . . . . . . . 152lacing calls on the secondary T1 . . . . . . . . . . . . . . . . 152eceiving a call . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159

Contents

viii H

Accepting a call . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160Rejecting a call . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160Ignoring a call. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161

Inserting voice traffic into a call . . . . . . . . . . . . . . . . . . 161Performing BER analysis of a call . . . . . . . . . . . . . . . . 163Transferring the B Channel for connected calls . . . . . 166VMI

VT

Chapter 7 AACRCA

V

Appendix A T

ASSIBPST-3000 T1 Testing Users Guide Revision A

erifying the switch to a backup D Channel . . . . . . . . 167onitoring ISDN PRI service . . . . . . . . . . . . . . . . . . . . . 169

nterpreting D Channel decode messages . . . . . . . . . . 175LAPD messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177Q.931 messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178Viewing and navigating decode messages . . . . . . . . 179Clearing the message buffer . . . . . . . . . . . . . . . . . . . 179Capturing decode text in an ASCII text file . . . . . . . . 180

iewing test results . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180roubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181

utomated T1 Testing 185bout automated testing . . . . . . . . . . . . . . . . . . . . . . . . 186ustom test scripts . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187unning a T1 BERT test script . . . . . . . . . . . . . . . . . . . 188reating and editing test configurations . . . . . . . . . . . 191ssociating test results with a test record . . . . . . . . . 195

Associating results with a new test record . . . . . . . . . 195Associating results with an existing test record . . . . . 197

iewing auto test results . . . . . . . . . . . . . . . . . . . . . . . . 198

1, FT1, T1 DDS, and Pulse Shape Test Results199

bout test results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200ummary results. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200ignal results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203

nterface (T1) results . . . . . . . . . . . . . . . . . . . . . . . . . . . 205ERT results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 208ulse shape results . . . . . . . . . . . . . . . . . . . . . . . . . . . . 209

Contents

H

LED results. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .211Traffic results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 213Performance results . . . . . . . . . . . . . . . . . . . . . . . . . . . 213

T1.231 results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 213G.821 results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 216

Time results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 218CS

Appendix B V

ASSIVLT

Appendix C S

ASSICVLTTC

Appendix D I

SIST-3000 T1 Testing Users Guide Revision A ix

hannel results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 218aving and printing results . . . . . . . . . . . . . . . . . . . . . 219

F Test Results 221

bout test results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 222ummary results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 222ignal results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 224

nterface results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 224F results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225ED results. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 230ime results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 231

ignaling Test Results 233

bout test results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 234ummary results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 234ignal results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 236

nterface results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 236all results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 237F results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 238ED results. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 238raffic results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239ime results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239hannel results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239

SDN PRI Test Results 241

ummary results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 242SDN results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 246

Contents

x H

Call Summary results . . . . . . . . . . . . . . . . . . . . . . . . . . . 250Call results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250

Call states . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251Call test results. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 252

D Channel Decode results . . . . . . . . . . . . . . . . . . . . . . . 253LAPD Unnumbered frame messages . . . . . . . . . . . . 253

QL

Appendix E B

BAEETTV

Appendix F S

RTTF

Glossary

IndexST-3000 T1 Testing Users Guide Revision A

LAPD Supervisory frame messages . . . . . . . . . . . . . 254Q.931 messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . 255

.931 Cause Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . 256ED results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 264

ERT Patterns, Errors, Alarms, and Loop Codes 265

ERT patterns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 266larms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 270rrors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 271rror/alarm criteria . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2711 DDS loop codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2721 and FT1 loop codes. . . . . . . . . . . . . . . . . . . . . . . . . . 274F Loopback Tones . . . . . . . . . . . . . . . . . . . . . . . . . . . . 277

pecifications 279

eceiver specifications . . . . . . . . . . . . . . . . . . . . . . . . . 280ransmitter specifications . . . . . . . . . . . . . . . . . . . . . . . 280est configurations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 281requency and level measurements . . . . . . . . . . . . . . . 282

285

291

HAbout This Guide

T

ST-3000 T1 Testing Users Guide Revision A xiopics discussed in this chapter include the following:

Purpose and scope on page xiiAssumptions on page xiiTerminology on page xiiHST-3000 T1 testing users guide on page xiiiHST-3000 base unit users guide on page xiiiSafety and compliance information on page xivTechnical assistance on page xivConventions on page xv

About This GuidePurpose and scope

xii H

Purpose and scopeThe purpose of this guide is to help you successfully use the features and capabilities of the HST-3000 with the T1 testing capability. This guide includes task-based instructions that describe how to configure, use, and troubleshoot the H

To

AssumptionsTeecn

TerminologyTu

ST-3000 T1 Testing Users Guide Revision A

ST-3000 for T1 (DS1) physical transmission testing.

his guide also includes information about the following ptional testing features:

T1 DDS TestingVF (PCM) AnalysisPCM Signaling AnalysisISDN PRI Testing

his guide is intended for novice, intermediate, and experi-nced users who want to use the HST-3000 T1 testing option fficiently and effectively. We assume that you have basic omputer experience and are familiar with basic telecommu-ications safety, concepts, and terminology.

he following terms have a specific meaning when they are sed in this guide:

HST-3000 The HST-3000 family of products or the combination of a base unit and a SIM.SIM Service Interface Module. Referred to generically as the module.

About This GuideHST-3000 T1 testing users guide

H

For definitions of other terms used in this guide, see Glos-sary on page 285.

HST-3000 T1 testing users guideTipAtIf

TtagAgA

HST-3000 base TmtsadmmST-3000 T1 Testing Users Guide Revision A xiii

his guide is an application-oriented users guide containing nformation about using the HST-3000 T1 testing option to erform test operations on T1 and fractional T1 (FT1) lines. lso included is information about using the following optional

est features: T1 DDS, VF (voice frequency), Signaling, and SDN PRI. For information about purchasing an optional test eature, contact your Acterna sales representative.

his guide includes an overview of testing features, instruc-ions for using the HST-3000 in monitor, terminate, and drop nd insert test operations, and test result descriptions. This uide also contains specifications and contact information for cternas Technical Assistance Center (TAC). This users uide should be used in conjunction with the cterna HST-3000 Base Unit Users Guide.

unit users guidehe HST-3000 Base Unit Users Guide contains overall infor-ation relating to device and general functions such as using

he unit with a keyboard, peripheral support, battery charging, aving and printing results, and managing files. This guide lso contains technical specifications for the base unit and a escription of Acternas warranty, services, and repair infor-ation, including terms and conditions of the licensing agree-ent.

About This GuideSafety and compliance information

xiv H

Safety and compliance informationSafety instructions and compliance information are contained in the booklet included with the HST-3000 user documenta-tion CD-ROM jewel case. The safety/compliance booklet is also available in electronic form on the HST-3000 user docu-m

Technical assistItAs

Bh(n

Table 1 Technica

Region

Americas (except Brazil)

BrazilST-3000 T1 Testing Users Guide Revision A

entation CD-ROM.

ancef you need assistance or have questions related to the use of his product, use the information in Table 1 to contact cternas Technical Assistance Center (TAC) for customer upport.

efore you contact Acterna for technical assistance, please ave the serial numbers for the service interface module SIM) and the base unit handy (see Locating the serial umber in the HST-3000 Base Unit Users Guide).

l assistance centers

Phone Number

1-866-ACTERNA1-866-228-3762301-353-1550

[email protected]

0800-70153704617 38394617 3729

About This GuideConventions

H

Dtrsr

ConventionsWt

Europe, Africa, and Mid-East

+800 882 85822 (European Freephone)

[email protected]

Asia and the Pacific

Australia

Table 1 Technical assistance centers (Continued)

Region Phone NumberST-3000 T1 Testing Users Guide Revision A xv

uring off-hours, you can request assistance by doing one of he following: leave a voice message at the TAC for your egion; email the North American TAC ([email protected]); ubmit your question using our online Technical Assistance equest form at www.acterna.com.

hen applicable, this guide uses the typographical conven-ions and symbols described in the following tables.

(Acterna UK)

+49 (0) 7121 86 1345 (Acterna Germany)

+33 (0) 1 39 30 24 24 (Acterna France)

[email protected]

[email protected]

[email protected]

+852 2892 0990 (Hong Kong)

+8610 6833 7477 (Beijing-China)

+61 3 9690 6700


xvi H

Table 2 Typographical conventions

Description Example

User interface actions appear in this typeface.

On the Status bar, click Start.

Buttons or switches that you Press the ON switch.

TST-3000 T1 Testing Users Guide Revision A

press on a unit appear in this TYPEFACE.

Code and output messages appear in this typeface.

All results okay

Text you must type exactly as shown appears in this type-face.

Type: a:\set.exe in the dialog box.

Variables appear in this type-face.

Type the new hostname.

Book references appear in this typeface.

Refer to Newtons Telecom Dictionary.

A vertical bar | means or: only one option can appear in a single command.

platform [a|b|e]

Square brackets [ ] indicate an optional argument.

login [platform name]

Slanted brackets < > group required arguments.

able 3 Keyboard and menu conventions

Description Example

A plus sign + indicates simul-taneous keystrokes.

Press Ctrl+s

A comma indicates consecu-tive key strokes.

Press Alt+f,s

A slanted bracket (>) indi-cates choosing a submenu from menu.

On the menu bar, click Start > Program Files.


H

Table 4 Symbol conventions

T

This symbol represents a caution.

DANGER

WARNING

CAUTIONST-3000 T1 Testing Users Guide Revision A xvii

able 5 Safety definitions

This symbol represents a risk of electrical shock.

This symbol represents a risk of explosion

This symbol represents a Note indicating related informa-tion or tip.

Indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.

Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.

Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury.


xviii HST-3000 T1 Testing Users Guide Revision A

HChapter 1Getting started

TTf

ST-3000 T1 Testing Users Guide Revision A 11his chapter provides basic information about the HST-3000 1 testing option. Topics discussed in this chapter include the

ollowing:

Overview and options on page 2T1 connectors on page 4Accessing the test configuration menus on page 7Launching an application on page 6Instrument settings and user preferences on page 9

Chapter 1 Getting startedOverview and options

2 H

Overview and optionsAn HST-3000, with T1 testing capability, allows you to perform the test operations necessary to install, maintain, and trouble-shoot T1 and Fractional T1 circuits. Test operations include in-service monitoring, bit error rate testing (BERT), loopback t

Ytoa

Table 6 T1 testin

Option

T1 DDS Testing

Voice Frequency (PCM) AnalysisST-3000 T1 Testing Users Guide Revision A

esting, and drop and insert testing.

ou can expand your testing capability by purchasing addi-ional T1 testing options. All test operations using the T1 ptions are performed from a T1 access point. The options vailable for purchase are as follows:

g options

Description Order Number

This option allows you to perform monitor and BERT test operations on a DDS channel from a T1 access point. This option supports alternating and latching loop codes.

HST3000-T1DDS

This option allows you to test voice-grade and data-grade VF circuits. On a specified DS0 channel, you can measure standard tone characteris-tics (frequency, tone level, and DC offset), test for spectral noise, and perform a three-tone sweep test. Additionally, you can configure signal-ing bits and listen to audible output from the HSTs loudspeaker.

HST3000-PCMTIMS

Chapter 1 Getting startedOverview and options

H

PCM Signaling Analysis

With this option, you can monitor both directions of a user-specified DS0 channel on a T1 line for call activity. Additionally, you can use

HST3000-PCMSIG

ISDN PRI Test-ing

Pulse Shape Analysis

Table 6 T1 testing options (Continued)

Option Description Order NumberST-3000 T1 Testing Users Guide Revision A 3

the HST to emulate the CPE (PBX) or CO sides of a network to originate or terminate a call over a user-specified DS0 channel on a duplex T1 circuit. The HST can display characteristics of each received DTMF, MF, DP digit, and signaling event.

With this option, you can install and maintain ISDN PRI services over T1 interfaces. You can place, receive, and analyze calls, test data services using BERT analy-sis, test voice services using a microphone/speaker audio head-set, and monitor physical (layer 1), LAPD (layer 2), and Q.931 (layer 3) results.

HST3000-PRI

With this option, you can measure the height, width, rise time, fall time, overshoot, undershoot, and signal level of a T1 pulse. The HST displays the measurements and a graph of the pulse shape. You can also measure the pulse for conformance to ANSI T1.102 (DSX) and ANSI T1.403 (Network Interface) specifications.

HST3000-PS

Chapter 1 Getting startedT1 connectors

4 H

T1 connectorsA SIM with T1 testing capability contains the physical inter-faces needed to perform T1 (DS1) testing. The Primary and Secondary T1 transmit (Tx) and receive (Rx) connectors are located on the side of the SIM (see Figure 1). Table 7 on p

Yt

Primary Rx and Txlocated beneath dST-3000 T1 Testing Users Guide Revision A

age 5 describes the connectors on the T1 SIM.

our SIM may have additional connectors depending on its esting features.

Figure 1 T1 interface connectors

Secondary Tx and Rx are located beneath dust caps

are ust caps

NOTE:The T1 interface connectors are protected by flexible dust caps. The dust caps are permanent fixtures and should not be removed.

Chapter 1 Getting startedT1 connectors

H

Table 7 describes the connectors on the T1 SIM. For addi-tional input and output specifications, see Appendix F.

WARNING: ELECTRICAL SHOCKElectrical shock may result in serious injury or death. Use care when connecting to telecommunications circuits, to be

TST-3000 T1 Testing Users Guide Revision A 5

sure that you do not come in contact with exposed conduc-tors or power mains. Connect TNV signals only to TNV ports.

able 7 T1 SIM connectors

Connector Type Description

Primary Rx Bantam Jack

T1 connection to the primary receiver. Used in Monitor, Ter-minate, and Drop and Insert modes.

Primary Tx Bantam Jack

T1 connection to the primary transmitter. Used in Terminate and Drop and Insert modes.

Secondary Rx Bantam Jack

T1 connection to the secondary receiver. Used in Monitor and Drop and Insert modes.

Secondary Tx Bantam Jack

T1 connection to the secondary transmitter. Used in Drop and Insert mode.

Chapter 1 Getting startedLaunching an application

6 H

Launching an applicationBefore you can launch a T1 application, you must have a SIM with T1 testing capability. Also, make sure the SIM is properly connected to the HST base unit before you power on the unit. For information about connecting a SIM and powering the H

Tt

T

1

2

3ST-3000 T1 Testing Users Guide Revision A

ST, see the Acterna HST-3000 Base Unit Users Guide.

he following procedure describes how to launch an applica-ion.

o launch a T1 application

Power on the HST-3000.

Press the T1 soft key.The T1 Measurements menu appears. This menu lists the T1 test applications. Menu items vary depending on the options you purchased.

Select the application you want to launch.You can press a number key that corresponds to the application you want to launch. For example, press the 1 key to launch the BERT application. You can also use the

T1 Measurements menu

Chapter 1 Getting startedAccessing the test configuration menus

H

up and down arrow keys to highlight your selection, and the press the OK key. The following table lists all currently available T1 applications.

Fcsc

Accessing the tWtfu

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1

Application Select...

T1 full rate and fractional rate (FT1) bit error rate

BERTST-3000 T1 Testing Users Guide Revision A 7

The HST launches the application.

or information about purchasing options for the HST-3000, ontact your Acterna representative or your local Acterna ales office. You can also contact Acterna through the ompany web site, www.acterna.com.

est configuration menushen you configure a test, you configure the test settings

hrough menu options on the HST-3000 interface. The ollowing procedure describes how to access the test config-ration menus.

o access the test configuration menus

Launch an application. See Launching an application on page 6.

analysis

Voice frequency (PCM TIMS) analysis

VF

Monitor, place, and receive T1 trunk calls

Signaling

Monitor, place, and receive ISDN PRI calls

ISDN PRI

Frame relay testing Frame Relay

T1 pulse shape analysis Pulse Shape

Chapter 1 Getting startedAccessing the test configuration menus

8 H

The HST launches the application and a test result screen appears.

2 Press the Configure navigation key.The configuration menus appear. The menus contain the settings you configure to perform test operations. The menus will vary depending on the application you

3

soft keys

Configuration menuST-3000 T1 Testing Users Guide Revision A

selected.

To view a menu, press the corresponding soft key. For example, to view the Pattern Settings menu, press the PATTERN soft key.

Chapter 1 Getting startedInstrument settings and user preferences

H

Instrument settings and user preferencesFor information about the following HST-3000 features, see the Acterna HST-3000 Base Unit Users Guide:

Powering the HST-3000

ST-3000 T1 Testing Users Guide Revision A 9

Changing instrument and preference settings, such as date and time format, port settings, sound, and screen settingsInternational settingsRemote operationWeb browserVT100 emulationTransferring files using FTPManaging filesPrinting

Chapter 1 Getting startedInstrument settings and user preferences

10 HST-3000 T1 Testing Users Guide Revision A

HChapter 2T1 and FT1 testing

TmT

Troubleshooting on page 57ST-3000 T1 Testing Users Guide Revision A 112his chapter provides information on performing turn-up and aintenance testing using the HST-3000 T1 testing feature.

opics discussed in this chapter include the following:

About testing on page 12Test modes on page 13Status LEDs on page 14Monitoring a channel on page 16Measuring timing slips on page 25Terminate testing on page 27Configuring user-defined loop codes on page 41Pulse shape analysis on page 43Drop and insert testing on page 47Viewing test results on page 56

Chapter 2 T1 and FT1 testingAbout testing

12 H

About testingThe HST-3000, with a T1-capable SIM, is intended to be used to commission and maintain T1 and fractional T1 (FT1) trans-mission circuits. Typically this involves out-of-service testing to ensure that the physical layer is clean and there are no p

Y

Hf

ST-3000 T1 Testing Users Guide Revision A

roblems with network equipment or improper provisioning.

ou can use the HST-3000 in the following ways:

To terminate a circuit, and then loop back to another HST 3000 unit or piece of network equipment (such as a CSU or repeater) to perform BER testing.To emulate a piece of network equipment (such as an NIU or CSU) and respond to loop backs from another HST-3000 at the far end.To perform BER analysis end-to-end between two HST-3000 units (typically requires two technicians) with analysis performed in both directions. This allows you to easily isolate faults on the circuit.To passively monitor one or two T1 circuits (in-service testing) by examining transmission layer metrics such as CRC and frame errors or timing slips. To perform drop-and-insert (D&I) BER testing on indi-vidual DS0 channels within a T1 circuit. This is typically conducted from a DSX patch panel.

ST-3000 T1 testing applications include the following eatures:

Standard DS1 transmit (Tx) and receive (Rx) interfaces.Fractional T1 analysis for contiguous and non-contiguous timeslots in 56kbps or 64kbps format.Supported framing formats: DS1 Unframed, ESF (D4 Extended SuperFrame format), SF (D4 SuperFrame format), SLC-96, and auto framing.Insertion of BPV, bit errors, frame bit errors and CRC errors.

Chapter 2 T1 and FT1 testingTest modes

H

Generation of the following loop codes: NIU, CSU, FT1 CSU (V.54), CSU, HDSL, MSS, user defined, and repeater.

OK message is displayed if no errors or alarms have occurred during the test. This provides a quick and easy way of determining that the line is free from errors.

Test modesTf

ST-3000 T1 Testing Users Guide Revision A 13

Physical layer alarms, errors, and statistics are collected at all times.

he HST-3000 with a T1-capable SIM can operate in the ollowing test modes:

Terminate Mode: This mode is for testing out-of-service lines using the Primary T1 transmitter (Tx) and the Primary T1 receiver (Rx). You can generate and send test patterns on the Tx and receive patterns on the Rx.Monitor Mode: This mode measures signal parameters, monitors traffic from a resistor-isolated DS1 monitor point, or bridges onto the line. Both the primary and secondary T1 receivers are monitored simultaneously.Drop and Insert Mode (D&I): This mode allows you to perform bit error rate testing (BERT) on user-selected channels within a DS1 circuit. Non-selected channels remain in-service and pass through unchanged.

Chapter 2 T1 and FT1 testingStatus LEDs

14 H

Status LEDsThere are six status LEDs located on the front of the HST-3000, above the LCD screen. Table 8 describes how the LEDs operate.

Table 8 Status LEDsST-3000 T1 Testing Users Guide Revision A

LED Description

Sync A two-color LED that reports the signal status. Solid green indicates a signal is present and

there is frame synchronization on all active receivers.

Flashing green indicates auto-framing is running on at least one active receiver.

Solid red indicates that at least one of the active receivers does not have signal or frame syn-chronization.

If the Sync LED is not illuminated, no signal has been detected on any active receiver.

Data A two-color LED that reports pattern synchroniza-tion status. Solid green indicates pattern synchronization

has been achieved on all active receivers. Flashing green means auto pattern is running

on at least one active receiver. Solid red indicates that at least one of the active

receivers does not have pattern synchroniza-tion.

If the Data LED is not illuminated, it means the selected traffic pattern is live, or no pattern syn-chronization has been detected on any active receiver.

Error An LED that reports error conditions. If the Error LED is not illuminated it means all

Summary results are OK. Solid red indicates an error.

Chapter 2 T1 and FT1 testingStatus LEDs

H

Alarm An LED that reports alarm status. If the Alarm LED is not illuminated, then no

alarm was detected. Solid red indicates an alarm was detected.

Table 8 Status LEDs (Continued)

LED DescriptionST-3000 T1 Testing Users Guide Revision A 15

LpBk This LED indicates the local loopback state of the HST unit. Solid green indicates the HST has been placed

in loopback by the remote end. If the LpBk LED is not illuminated, there is no

local loopback.

Batt A three-color LED that indicates the battery status. The LED is off when the battery has a useful

charge. Solid green indicates the AC adapter is plugged

in. Solid red indicates the battery is at 20 percent or

below of full charge. Flashing red indicates about five minutes of use

remain. When this happens, the battery should be charged or replaced immediately.

Solid amber or flashing amber indicates the bat-tery capacity indicator (gas gauge) needs to be reset.

NOTE: For information about charging the battery, changing batteries, and resetting the battery capac-ity indicator, see the Acterna HST-3000 Base Unit Users Guide.

Chapter 2 T1 and FT1 testingMonitoring a channel

16 H

Monitoring a channelThe HST-3000 allows you to monitor the primary and secondary T1 receivers simultaneously. You can analyze full T1 and fractional T1 (DS0) channels and examine transmis-sion layer results, such as CRC and frame errors, or BPVs for a

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2


single side of the traffic or in both directions.

he following procedure describes how to monitor a circuit.

o monitor a channel

Launch the BERT application. See Launching an appli-cation on page 6.

Access the test configuration menus. See Accessing the test configuration menus on page 7.

Press the DS1 soft key.The DS1 Settings menu appears.

NOTE:The transmitters (Tx) are turned off in Monitor mode.


H

4 Configure settings by pressing a number on the key pad that corresponds to the setting you want to configure. For example, press the 1 key to configure the test mode.You can also use the arrow keys to highlight the setting you want to change, and then press the OK key. Press the Cancel key to exit a menu. ST-3000 T1 Testing Users Guide Revision A 17

The following table describes the settings.

Setting Parameters

Test Mode Select Monitor mode.

Pri. Input The primary input setting becomes effec-tive immediately and should be set before the HST is connected to the line. Set the Primary receiver (Rx) to one of the following: Bridge: High impedance setting used

to connect to the line in a bridged arrangement, resistive termination >1k .

Terminate: Used to terminate a line with 100 .

DSX Monitor (default): Used to con-nect to a protected monitor point (PMP) on the network equipment under test; provides a resistive termi-nation of 100 with 20dB gain applied to the input signal to compen-sate for the reduced PMP amplitude.

Sec. Input Set the Secondary receiver (Rx) to one of the following: Bridge Terminate DSX-MonitorFor descriptions, see Pri. Input.


18 H

Payload Select the type of channel you want to monitor: Full Rate: DS1 channel Fractional Rate: DS0 channel from a

DS1

Setting ParametersST-3000 T1 Testing Users Guide Revision A

T1-DDS: This option only appears if you purchased the T1 DDS option. For information about monitoring a T1 DDS channel, see Monitoring a DDS channel on page 63.

Framing Select the framing format for the signal: Auto Unframed ESF: D4 Extended SuperFrame for-

mat SF: D4 SuperFrame format SLC-96

Line Coding Select one of the following line coding options: B8ZS: Bipolar 8 zeros substitution AMI: Alternate mark inversionNOTE: If you use the All Zeros BERT pattern, the line coding should be set to B8ZS. If you set the line coding to AMI (instead of B8ZS) and select the All Zeros BERT pattern, you will not be in compliance with the ANSI standard for ones density. If this occurs, the HST will not maintain the T1 signal or timing.

Bit Rate(Fractional Rate only)

Select one of the following: Nx56 Nx64


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5

DS0 Channels(Fractional Rate only)

Use the arrow keys to highlight any of the 24 channels (timeslots), then press the OK key to select the channel. You can select multiple channels.When you have finished selecting chan-

Setting ParametersST-3000 T1 Testing Users Guide Revision A 19

To specify a BERT pattern, do the following:

a Press the PATTERN soft key.The Pattern Settings menu appears.

b Select Pattern, and then use the arrow keys to high-light a BERT pattern from the list.

nels, press the Commit soft key. At least one timeslot must be selected.To select all channels, press the Select All soft key.To clear all channels, press the Clear All soft key.

Tx Clock Select one of the following: Internal Clock Recovered from Primary Recovered from Secondary


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For a description of available patterns, see BERT patterns on page 266.

NOTE:If you select the All Zeros BERT pattern, the line coding should be set to B8ZS. To change the line coding, press the DS1 soft key, and then select Line Coding. See Line Cod-ST-3000 T1 Testing Users Guide Revision A

c Press the OK key to select the pattern. If you select Multipat, User Bit Pattern, or User Byte Pattern, you must enter additional information. The following table describes the settings.

ing on page 18.

Setting Parameter

User Bit Patt. Enter a binary number from 3 to 32 bits long.

User Byte Patt. Enter a hexadecimal number from 1 to 64 bytes long.

Multipat (Ones) If you select Multipat as the pattern, select how long each pattern should be transmitted: 15 sec 30 sec 45 sec 1 min 3 min 5 min 10 min 15 minFor a description of the Multipat pat-ter, see MULTIPAT on page 269.

Multipat (1:7)

Same as Multipat (Ones)Multipat (2in8)

Multipat (3in24)

Multipat (QRSS)


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6 To perform a timed test, do the following:

a Press the EVENTS soft key.The Event Settings menu appears.

7

Timed test iconST-3000 T1 Testing Users Guide Revision A 21

b Select Timed Test, and then select either Enabled or Disabled. If timed test is enabled, a clock icon appears in the upper right corner of the screen.

c If timed testing is enabled, select Timed Test Dur.

d Enter the number of hours, minutes, and seconds you want the test to run, and then press the OK key.

To configure settings for G.821 performance analysis, do the following:

a Press the G_821 soft key.


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The G.821 Settings menu appears. ST-3000 T1 Testing Users Guide Revision A

b Select a setting, and then specify the parameter. The following table describes the settings.

Setting Parameter

Pri. Verdict Indicates the primary channel will be analyzed for conform-ance to G.821 specifications. The HST will return either a Pass or Fail result.The only option for this setting is Enabled.

Pri. Allocation % Enter a value, from 0.1% to 100%, to indicate the percent-age of the end-to-end target val-ues for ESR (Errored Seconds Ratio) and SESR (Severely Errored Seconds Ratio) that must be met for the primary test path to be acceptable. The end-to-end target values are based on the Hypothetical Reference Configuration (HRX) of length 27 500 km.


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Sec. Verdict Indicates the secondary chan-nel will be analyzed for conform-ance to G.821 specifications. The HST will return either a Pass or Fail result.

Setting ParameterST-3000 T1 Testing Users Guide Revision A 23

The only option for this setting is Enabled.

Sec. Allocation % Enter a value, from 0.1% to 100%, to indicate the percent-age of the end-to-end target val-ues for ESR (Errored Seconds Ratio) and SESR (Severely Errored Seconds Ratio) that must be met for the secondary test path to be acceptable. The end-to-end target values are based on the Hypothetical Ref-erence Configuration (HRX) of length 27 500 km.


24 H

8 Connect the HST-3000 to the test access point (see Figure 2): Connect the HST T1 Primary Rx jack to the DSX-1

A-side MON jack Connect the HST T1 Secondary Rx jack to the DSX-1

Z-Side MON jack

9

1

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YST-3000 T1 Testing Users Guide Revision A

Press the Home navigation key, and then press the Restart soft key to clear all alarms and begin the test.Test results appear in the Summary category.

0 To view other results, see Viewing test results on page 56.

1 To stop a running test, press the Cancel key.

ou have finished monitoring the circuit.

Figure 2 Monitor connections

HST-3000

PRIMARY SECONDARY

Rx Tx Tx Rx

CSU/NIU

DSX-1

A-Side

Network

Z-Side

Primary

MON

SecondaryOut

In

Chapter 2 T1 and FT1 testingMeasuring timing slips

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Measuring timing slipsThe HST-3000 allows you to monitor the timing between two T1 signals for timing slips. For example, you can check customer premises equipment against a master clock at the central office, or you can compare two lines of network equip-msS

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3

4

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6ST-3000 T1 Testing Users Guide Revision A 25

ent. The HST-3000 measures the difference, in bits per econd (bps), between the Primary Rx (receiver) and econdary Rx.

he following procedure describes how to measure timing lips.

o measure timing slips




Select Test Mode, and then select Monitor.

Select Payload, and then select one of the following:

Configure the remaining settings for the test (see step 4 through step 6 beginning on page 17).

To monitor a Select

DS1 channel Full Rate

DS0 channel from a DS1 Fractional Rate

Chapter 2 T1 and FT1 testingMeasuring timing slips

26 H

7 Connect the HST-3000 to a reference signal and to the test signal (see Figure 3): Connect a cable from the HST T1 Secondary Rx jack

to a DS1 BITS clock or a known, good reference signal.

Connect a cable from the HST primary Rx jack to the

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YST-3000 T1 Testing Users Guide Revision A

signal to be tested.

Press the Home navigation key.

Press the Restart soft key to clear all alarms and begin the test.Test results appear in the Summary category.

0 Press the Display soft key, and then select Signal. The Signal Results window appears.

1 Check the timing slips result. For a description of the result, see Timing Slips on page 204.

2 To end the test, press the Cancel key and disconnect the cables.

ou have finished measuring timing slips.

Figure 3 Timing slips connections

HST-3000

PRIMARY SECONDARY

Rx Tx Tx Rx

Network

Master Clock

NetworkBITS Clock

Chapter 2 T1 and FT1 testingTerminate testing

H

Terminate testingIn Terminate mode, you can use the HST-3000 to perform bit error rate testing (BERT or BER testing) on DS1 channels, and DS0 channels within a DS1. You can test for bit errors, BPVs, frame errors, and CRC errors (if applicable).

IbeaHcaacdc

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n Terminate mode, you can also use the HST to perform loop-ack testing. Loop back testing allows you to qualify T1 circuit rror performance by testing for bit errors, BPVs, frame errors, nd CRC errors (if applicable) on T1 and FT1 lines. The ST-3000 can generate a number of commonly used loop odes, including NIU, CSU, FT1 CSU, MSS, repeater, HDSL, nd user-defined loop codes. This allows you to set up a loop t an NIU, CSU, or any repeater between the DSX-1 and the ustomer premises. For instructions on configuring user-efined loop codes, see Configuring user-defined loop odes on page 41.

he following procedure describes how to perform a BER test.

o perform a BER test



Press the DS1 soft key.


28 H

The DS1 Settings menu appears.


Configure the settings by pressing a number on the key pad that corresponds to the setting you want to configure. For example, press the 1 key to configure the test mode.You can also use the arrow keys to highlight the option you want to change, and then press the OK key. Press the Cancel key to exit a menu. The following table describes the settings.

Setting Parameter

Test Mode Select Terminate.


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Pri. Input NOTE: The primary input setting becomes effective immediately and should be set before the HST is con-nected to the line. Set the Primary Rx input to one of the


following: Bridge: High impedance setting

used to connect to the line in a bridged arrangement, resistive ter-mination >1k

Terminate (default): Used to ter-minate a line with 100 .

DSX-Monitor: Used to connect to a protected monitor point (PMP) on the network equipment under test; provides a resistive termina-tion of 100 with 20dB gain applied to the input signal to com-pensate for the reduced PMP amplitude.

Sec. Input Set the Secondary Rx input to one of the following: Bridge Terminate DSX-MonitorFor descriptions, see Pri. Input.

Payload Select the type of channel you want to monitor: Full Rate: DS1 channel Fractional Rate: DS0 channel

from a DS1 T1-DDS: This option only appears

if you purchased the T1 DDS option. For information about DDS terminate test operations, see Terminate testing on page 70.


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Framing Select the framing format for the sig-nal: Auto Unframed ESF: D4 Extended SuperFrame

Setting ParameterST-3000 T1 Testing Users Guide Revision A

format SF: D4 SuperFrame format SLC-96

Idle Byte(Fractional Rate only)

Enter an 8-bit binary value. This idle pattern will be transmitted in the channels that are not selected for test.

Line Coding Select one of the following line coding options: B8ZS: Bipolar 8 zeros substitution AMI: Alternate mark inversion.NOTE: If you use the All Zeros BERT pattern, the line coding should be set to B8ZS. If you set the line coding to AMI (instead of B8ZS) and select the All Zeros BERT pattern, you will not be in compliance with the ANSI standard for ones density. If this occurs, the HST will not maintain the T1 signal or timing.

Bit Rate(Fractional Rate only)

Select one of the following: Nx56 Nx64

DS0 Channels(Fractional Rate only)

Use the arrow keys to highlight a channel (timeslot), and then press OK to select the channel. When you have finished selecting channels, press the Commit soft key.To select all 24 channels, press the Select All soft key.To clear all channels, select Clear All.


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5

Tx Clock Specify the signal timing source for the Primary Tx output: Internal Recovered from Primary Rx Recovered from Secondary Rx


To specify a BERT pattern, do the following:


b Select Pattern, and then use the arrow keys to high-light a BERT pattern from the list. For a description of available patterns, see BERT patterns on page 266.

c Press the OK key to select the pattern.

NOTE:If you select the All Zeros BERT pattern, the line coding should be set to B8ZS. To change the line coding, press the DS1 soft key, and then select Line Coding. See Line Cod-ing on page 30.


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If you selected Multipat, User Bit Pattern, or User Byte Pattern, you must enter additional information. The following table describes the settings.

6

Setting Parameter

User Bit Patt. Enter a binary number from 3 to 32 bits long.ST-3000 T1 Testing Users Guide Revision A

To configure loop code parameters, do the following:

a Press the LOOP soft key.


Multipat (Ones) If you select Multipat as the pattern, select how long each pattern should be transmitted: 15 sec 30 sec 45 sec 1 min 3 min 5 min 10 min 15 minFor a description of the Multipat pat-ter, see MULTIPAT on page 269.

Multipat (1:7)


Multipat (3in24)

Multipat (QRSS)


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The Loop Settings menu appears.


b Select Loop Code Test, and then select the type of loop code test:

NIU CSU FT1 CSU (V.54): Only available for fractional T1

testing. HDSL Repeater MSS User-Defined

If you specified the Payload as T1-DDS, the Loop Code Test option will not be available. For information about T1 DDS terminate testing, see Terminate testing on page 70.

c Configure the settings for the selected loop code. For a list of available loop codes and parameters, see T1 and FT1 loop codes on page 274.

To specify errors or alarms to insert, do the following:

a Press the ERROR soft key.


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The Error Settings menu appears.ST-3000 T1 Testing Users Guide Revision A

b Press the number key that corresponds to the setting you want to configure. For example, to configure an alarm, press the 1 key.The following table shows the available settings.

Setting Parameter

Alarms Select Alarms, and then specify the type of alarm to be inserted. For a list of available alarms, see Alarms on page 270.

Errors Select Errors, and then specify the type of error to be inserted. For a list of available errors, see Errors on page 271.

Rate Type This setting is only available if the error type is Bit Error.Select Rate Type, and then indicate how errors will be inserted:SingleRateMultiple


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Frame Errors This setting is only available if the error type is Frame Errors.Select Frame Errors, and then indicate how many errors will be inserted on a single key press: 1 or 2.


To perform a timed test, do the following:

a Press the EVENTS soft key.The Event Settings menu appears.

b Select Timed Test, and then select either Enable or Disable. If timed testing is enabled, a clock icon appears in the upper right corner of the screen.

Rate This setting is only available if the rate type is Rate.Select Rate, and then indicate the inser-tion rate for logic errors.

Error Count This setting is only available if the Rate Type is Multiple.Enter the number of errors to be inserted. The range is 1 though 50.

Timed test icon


36 H



9 To configure settings for G.821 performance analysis, do the following:ST-3000 T1 Testing Users Guide Revision A

a Press the G_821 soft key.The G.821 Settings menu appears.

b Select a setting, and then specify the parameter. The following table describes the settings.

Setting Parameter

Pri. Verdict Indicates the primary channel will be analyzed for conform-ance to G.821 specifications. The HST will return either a Pass or Fail result.The only option for this setting is Enabled.


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1

Pri. Allocation % Enter a value, from 0.1% to 100%, to indicate the percent-age of the end-to-end target val-ues for ESR (Errored Seconds Ratio) and SESR (Severely


0 To configure cable loss level or clock offset for the transmit signal, do the following:

a Press the OTHER soft key.

Errored Seconds Ratio) that must be met for the primary test path to be acceptable. The end-to-end target values are based on the Hypothetical Reference Configuration (HRX) of length 27 500 km.

Sec. Verdict Indicates the secondary chan-nel will be analyzed for conform-ance to G.821 specifications. The HST will return either a Pass or Fail result.The only option for this setting is Enabled.

Sec. Allocation % Enter a value, from 0.1% to 100%, to indicate the percent-age of the end-to-end target val-ues for ESR (Errored Seconds Ratio) and SESR (Severely Errored Seconds Ratio) that must be met for the secondary test path to be acceptable. The end-to-end target values are based on the Hypothetical Ref-erence Configuration (HRX) of length 27 500 km.


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The Other Settings menu appears.ST-3000 T1 Testing Users Guide Revision A

b Select the following settings, and specify the parame-ters:

Setting Parameters

LBO Level(Line Build Out)

Specify the level of cable loss for the output signal: 0 dB -7.5 dB -15.0 dB -22.5 dB

Tx Clock Offset Enter a value, from -50 through 50 ppm, to indicate the offset frequency generated by the 1544 kbps internal clock.To specify negative or positive num-bers, press the +/- soft key.To clear the entire field, press the Clear key.To delete a single character, press the Delete soft key.


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11 If you are performing and end-to-end test, skip to step 13. If you are configuring a loopback test, connect the HST to the test access point (see Figure 4): Connect the HST T1 Tx Primary jack to the DSX-1 TX

(IN) jack. Connect the HST Rx Primary jack to the DSX-1 RX


(OUT) jack.

2 Proceed to step 15.

Figure 4 Loopback Connections

HST-3000

PRIMARY SECONDARY

Rx Tx Tx Rx

DSX-1A-Side Z-Side

MON

Out

In

Primary Secondary

CSU/NIU

Loop Up /Loop Down


40 H

13 If you are performing an end-to-end test, connect the HST-3000 to the test access point (see Figure 5): Connect the HST T1 Primary Tx to the DSX-1 TX (In)

jack. Connect the HST T1 Primary Rx to the DSX-1 RX

(Out) jack.

1

1

1


If you are performing a straightaway (end-to-end) test at the customer premises, you will likely be accessing the circuit at the 66 block, NIU, or DSX-1 patch panel.

4 For end-to-end testing, you can use two test sets or set up a physical loop at the far end DSX-1. If you are unsure of this process, contact your supervisor.

5 Press the Home navigation key.

6 Press the Restart soft key to clear all alarms and begin the test.

7 Press the Actions soft key, and then select any of the following options:

Figure 5 End-to-end connection

Option Action

To insert errors Press the 1 key.

To insert alarms Press the 2 key.

HST-3000

PRIMARY SECONDARY

Rx Tx Tx Rx

Network

DSX-1A-Side Z-Side

MON

Out

In

DSX-1

MON

Out

In

physicalloop

Chapter 2 T1 and FT1 testingConfiguring user-defined loop codes

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1

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Configuring useTlch

To send a loop up, loop down, or other loop command

Select Loop Action.A pop-up menu appears with com-mand options. The available com-mands vary depending on the loop code you selected in step 6 on

Option ActionST-3000 T1 Testing Users Guide Revision A 41

8 If the circuit is physically looped back, check to see that the inserted errors are received in the Summary test result category (For instructions on viewing results, see Viewing test results on page 56). If you are performing an end-to-end test, verify that the HST units at each end of the circuit received the inserted errors.


ER testing is complete.

r-defined loop codeshe HST-3000 allows you to define up to ten user-defined

oop codes. These codes are available each time you onfigure a loopback test. The following procedure describes ow to define a loop code.

page 32.

NOTE:If you are performing a T1 loop/repeater test and you select, Actions > Arm, you may see the Sync and Data LEDs flashing and errors in the Summary results.

This can occur if the signal power level from the repeater is too high for the HST, more than +6dBdsx. To resolve this issue, on the HST, configure the signal input to DSX-MON and use the DSX monitor drop from the repeater.

Chapter 2 T1 and FT1 testingConfiguring user-defined loop codes

42 H

To configure a user-defined loop code

1 Launch the BERT application. See Launching an appli-cation on page 6.

2 Access the test configuration menus. See Accessing the test configuration menus on page 7.

3

4

5

6

7



Select Test Mode, and then select Terminate.

Select Payload, and then select Full Rate.

Press the LOOP soft key.The Loop Settings menu appears.

Select Loop Code Test, and then select User Defined.The user-defined loop code settings appear.

Configure the settings for the loop code. Press the number key that corresponds to the setting you want to configure. For example, press the 2 key to enter a name for your loop code.

Chapter 2 T1 and FT1 testingPulse shape analysis

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The following table describes the options.

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Pulse shape anaWmuta(

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2

Setting Parameter

Loop Code Name

Default names appear as User1, User2, User3, and so on.To change a pattern name, use the arrow keys to highlight a name, then ST-3000 T1 Testing Users Guide Revision A 43

ou have finished configuring a user-defined loop code.

lysisith the Pulse Shape option, you can use the HST-3000 to easure the height, width, rise time, fall time, overshoot and ndershoot, and signal level of a T1 pulse. The HST displays he measurements and a graph of the pulse shape. You can lso measure the pulse for conformance to ANSI T1.102 DSX) and ANSI T1.403 (Network Interface) specifications.

o perform pulse shape analysis

Launch the Pulse Shape application. See Launching an application on page 6.)

Access the test configuration menus. Accessing the test configuration menus on page 7.

press the Edit soft key.Use the keypad to enter letters.

Bit Pattern Enter a pattern. The pattern can be 1 to 16 bits long. Press the OK key to accept the change.

Type Specify the type of loop code: Loop Up Loop Down Other

Delivery Select either In Band or Out of Band.


44 H

3 Press the DS1 soft key.The DS1 Settings menu appears.


Configure the DS1 settings. The following table describes the available settings.

Setting Parameter

Rx Input Terminate is the only option.

Framing Select the framing format for the sig-nal: Auto Unframed ESF: D4 Extended SuperFrame

format SF: D4 SuperFrame format SLC-96


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5

Line Coding Select one of the following line coding options: B8ZS: Bipolar 8 zeros substitution AMI: Alternate mark inversionNOTE: If you use the All Zeros BERT


To specify a test pattern, do the following:


b Select Pattern, and then use the arrow keys to high-light a BERT pattern from the list. The Bridgetap and Multipat patterns are not available during pulse shape analysis. For a description of avail-able patterns, see BERT patterns on page 266.

c Press the OK key to select the pattern.

pattern, the line coding should be set to B8ZS. If you set the line coding to AMI (instead of B8ZS) and select the All Zeros BERT pattern, you will not be in compliance with the ANSI standard for ones density. If this occurs, the HST will not maintain the T1 signal or tim-ing.



Tx Clock Specify the timing source for the Pri-mary Tx output: Internal Clock Recovered from Primary


46 H

If you selected User Bit Pattern, or User Byte Pattern, you must enter additional information:

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Setting Parameter

User Bit Patt. Select User Bit Patt., and then enter a binary number from 3 to 32 bits long.ST-3000 T1 Testing Users Guide Revision A

After you have configured the settings, press the Home navigation key.

Connect the HST to the test access point. See Figure 4 on page 39 or Figure 5 on page 40.

To start the test, press the Restart soft key.

To view pulse shape results, press the Display soft key, and then select Pulse Shape.A graphical representation of the pulse appears. For infor-mation about pulse shape results, see Pulse shape results on page 209.

0 To measure conformance to ANSI T1.403 (network inter-face) or T1.102 (DSX) specifications, do the following:

a Press the Action soft key, and then select either Enable Mask T1.403 or Enable Mask T1.102.The HST applies the selected mask and displays the results as a graph.

b To disable a mask, press the Action soft key, and then select Disable Mask.

ou have completed pulse shape analysis.

User Byte Patt. Select User Bit Patt., and then enter a hexadecimal number from 1 to 64 bytes long.

Chapter 2 T1 and FT1 testingDrop and insert testing

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Drop and insert testingDrop and insert (D&I) testing allows you to drop an individual DS0 channel (fractional bandwidth) from a T1 circuit to perform bit error rate testing (BERT) on the selected channel. The remaining channels are not affected and remain in-si

WinTuicSSH

BERT pattern transmselected channels. Non-

channels pass ST-3000 T1 Testing Users Guide Revision A 47

ervice. You can also monitor a channel in D&I mode by not nserting data into the transmission.

hen a signal enters the HST-3000s Secondary Rx, the HST nserts a user-specified pattern into the selected DS0 chan-els, and then transmits those channels through the Primary x. Non-selected channels pass through the Primary Tx nchanged. When a signal enters the Primary Rx, the HST

nserts the user-defined idle byte pattern into selected DS0 hannels, and then transmits those channels through the econdary Tx. Non-selected channels pass through the econdary Tx unchanged. Figure 6 illustrates how the ST-3000 inserts patterns in D&I mode.

Figure 6 Drop and insert data flow

SecondaryPrimary

Tx Tx

RxRx

Data InData In

Idle byte pattern transmitted onselected channels. Non-selectedchannels pass through.

itted onselectedthrough.


48 H

Before operating in D&I mode, Acterna recommends using the power adaptor to plug the HST into an outlet, and keeping the unit plugged in throughout D&I testing. This ensures that testing will not be interrupted due to loss of battery power.

Tin

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NOTE:ST-3000 T1 Testing Users Guide Revision A

he following procedure describes how to perform a drop and sert test.

o perform a drop and insert test




Configure the settings by pressing a number on the key pad that corresponds to the setting you want to configure. For example, press the 1 key to configure the test mode.

If the HST-3000 loses power while connected to a live cir-cuit in D&I mode, the circuit will go down.


H

You can also use the arrow keys to highlight the option you want to change, and then press the OK key. Press the Cancel key to exit a menu.The following table describes the remaining options.

Setting ParametersST-3000 T1 Testing Users Guide Revision A 49

Test Mode Select Drop and Insert.

Pri. Input The primary input setting becomes effective immediately and should be set before the HST is connected to the line. Set the Primary receiver (Rx) to one of the following: Bridge: High impedance setting

used to connect to the line in a bridged arrangement, resistive termination >1k

Terminate (default): Used to ter-minate a line with 100 .

DSX Monitor: Used to connect to a protected monitor point (PMP) on the network equipment under test; provides a resistive termination of 100 with 20dB gain applied to the input signal to compensate for the reduced PMP amplitude.

Sec. Input Set the Secondary receiver (Rx) to one of the following: Bridge Terminate DSX MonitorFor descriptions, see Pri. Input.

Payload Fractional Rate is the only available parameter.


50 H

Framing Select the framing format for the sig-nal: Auto ESF: D4 Extended SuperFrame

format

Setting ParametersST-3000 T1 Testing Users Guide Revision A

SF: D4 SuperFrame format

Idle Byte Type an 8-bit binary value. This idle pattern will be transmitted in selected channels through the secondary Tx.

Line Coding Select one of the following line cod-ing options: B8ZS: Bipolar 8 zeros substitu-

tion AMI: Alternate mark inversion

Bit Rate Select one of the following: Nx56 Nx64

DS0 Channel Use the arrow keys to highlight a channel (timeslot), and then press OK to select the channel. When you have finished selecting channels, press the Commit soft key.To select all 24 channels, press the Select All soft key.To clear all channels, select Clear All.




H

5 To specify a BERT pattern, do the following:

a Press the PATTERN soft key.The Pattern Settings menu appears.ST-3000 T1 Testing Users Guide Revision A 51

b Select Pattern, and then use the arrow keys to high-light a BERT pattern from the list. For a description of available patterns, see BERT patterns on page 266.

c Press the OK key to select the pattern. If you selected Multipat, User Bit Pattern, or User Byte Pattern, you must enter additional information. The following table describes the settings.

Setting Parameter

User Bit Patt. Enter a binary number from 3 to 32 bits long.



52 H

6

7

Multipat (Ones) If you select Multipat as the pattern, select how long each pattern should be transmitted: 15 sec 30 sec


Press the LOOP soft key.The Loop Setting menu appears. The only available parameter is FT1 CSU (V.54).

To enable bit errors, do the following:

a Press the Home navigation key.

b Press the Action soft key, and then select Enable D&I.

c Press the Configure soft key.

d Press the ERROR soft key.

45 sec 1 min 3 min 5 min 10 min 15 minFor a description of the Multipat pat-ter, see MULTIPAT on page 269.

Multipat (1:7)


Multipat (3in24)

Multipat (QRSS)


H

The Error Settings menu appears.ST-3000 T1 Testing Users Guide Revision A 53

e Configure the error settings. Press the number key that corresponds to the setting you want to configure. For example, to specify a bit error, press the 1 key.The following table shows the available settings.

Setting Parameter

Errors Select Bit Error.

Rate Type Select Rate Type, and then indicate how errors will be inserted:SingleRateMultipleRate Type is only visible if the error type is Bit Error.

Rate Select Rate, and then indicate the inser-tion rate for logic errors.This option is only visible if the Rate Type is Rate.


54 H

8

Error Count Enter the number of errors to be inserted. The range is 1 though 50.This option is only available if the Rate Type is Multiple.


To perform a timed test, do the following:

a Press the EVENTS soft key. You may need to press the left or right arrow key to find the EVENTS soft key.The Event Settings menu appears.

b Select Timed Test, and then select either Enable or Disable. If timed test is enabled, a clock icon appears in the upper right corner of the screen.



Timed test icon


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9 Connect the HST-3000 to the test access point (see Figure 7): Connect the HST T1 Secondary Rx to the DSX-1

Z-Side MON jack. Connect the HST T1 Secondary Tx to the DSX-1

Z-Side Tx (In) jack.

1

1

1


Connect the HST T1 Primary Rx to the DSX-1 A-Side MON jack.

Connect the HST T1 Primary Tx to the DSX-1 A-Side Tx (In) jack.

0 Press the Home navigation key.

1 Press the Restart soft key to clear all alarms and begin the test.

2 To enable (or disable) drop and insert, press the Actions soft key, and then select Enable D&I (or Disable D&I).

3 To insert errors, press the Action soft key, and then select the selected error to be inserted.

Figure 7 Drop and insert mode connection

Chapter 2 T1 and FT1 testingViewing test results

56 H

14 To send loop commands, press the Action soft key, and then select Loop Up or Loop Down.

15 To view results, see Viewing test results on page 56.


Drop and insert testing is complete.

Viewing test resT

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3


ultshe following procedure describes how to view test results.

o view test results

Configure and run a test: See Monitoring a channel on page 16 See Terminate testing on page 27 See Drop and insert testing on page 47

Press the Home navigation key.

Press the Display soft key.The test categories appear.

Select a category.Test results for the selected category appear. For descrip-tions of test results, see Appendix A beginning on page 199.

Chapter 2 T1 and FT1 testingTroubleshooting

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TroubleshootingTable 9 describes situations that you may encounter when using the HST-3000.

Table 9 Problems and resolutions

Issue

No signal present

Alarm Indication Signal (AIS) detected

Pattern synchroni-zation is not achieved

Frame synchroniza-tion is not achieved

Bipolar violations (BPVs) detectedST-3000 T1 Testing Users Guide Revision A 57

Description Resolution

This occurs when there is no valid input connected to the HST-3000.

Make sure the cables are connected to the receiver and that the signal consists of valid data.

This alarm is displayed when an unframed all ones pattern is received. This is usually generated by net-work equipment to indicate a fault or lack of data on the line.

Clear the fault and restart the test.

The error is displayed when an input signal is detected but the incoming data pat-tern is different to the test pattern selected in the BERT setup.

Check the test pattern. make sure the correct one is selected.

The HST-3000 cannot rec-ognize a frame within the received signal.

Check the framing type used on the line and change the DS1 setup accordingly.

This error occurs when the polarity of a received pulse does not match the rules of the line code. It is normally seen when AMI is expected but B8ZS is in use on the line.

Check that the line code parameter is set correctly.

Chapter 2 T1 and FT1 testingTroubleshooting

58 H

When performing a T1 loop/repeater test, The Sync and Data LEDs flash and Summary errors appear after the Arm option is selected.

This can occur when the sig-nal power level from the repeater is too high for the HST to tolerate, more than

On the HST, access the DS1 Settings menu and configure the input to DSX monitor.Use the DSX-MON drop

In Monitor mode, the Sync and Data LEDs are red even though frame syn-chronization and pattern synchroni-zation are present on the primary interface.

Table 9 Problems and resolutions (Continued)

Issue Description ResolutionST-3000 T1 Testing Users Guide Revision A

+6dBdsx. from the repeater.

The HST monitors the pri-mary and secondary inter-faces simultaneously. The Sync and Data LEDs will be green only if both receivers have frame and pattern syn-chronization, respectively.

To monitor only one T1 inter-face, select Terminate mode, and then configure the pri-mary input to DSX-Monitor. Make sure you do not con-nect the primary transmitter.

HChapter 3T1 DDS testing

Top

ST-3000 T1 Testing Users Guide Revision A 593his chapter contains information on using the T1 DDS testing ption to perform tests on DDS channels from a T1 access oint. Topics discussed in this chapter include the following:

About testing on page 60Operating modes on page 60Status LEDs on page 61Monitoring a DDS channel on page 63Terminate testing on page 70Viewing test results on page 82Troubleshooting on page 83

Chapter 3 T1 DDS testingAbout testing

60 H

About testingThe T1 DDS test option allows you to perform BERT, loop-back, and monitor test operations on a DDS channel within a user-specified DS0 channel from a T1. The T1 DDS option offers the following features:

Operating modeTf

TlirT

MmbrST-3000 T1 Testing Users Guide Revision A

Supports analysis of either primary or secondary DDS channels on the same physical interface.Supports commonly used latching and alternating loop codes. Supports the following channel formats: DS0A2.4, DS0A4.8, DS0A9.6, DS0A19.2, DS0A56 Kbps, and Clear Channel (64 Kbps).Supports majority vote type error correction on received data at rates of DS0A2.4, DS0A4.8, and DS0A9.6 kbps. Error correction can be enabled or disabled.Supports subrate error correction for 19.2 Kbps. Error correction can be enabled or disabled.

she HST-3000 with a T1 capable SIM can operate in the

ollowing test modes:

erminate Mode This mode is for testing out-of-service nes using the Primary T1 transmitter (Tx) and the Primary T1 eceiver (Rx). You can generate and send test patterns on the x and receive patterns on the Rx.

onitor Mode This mode measures signal parameters, onitors traffic from a resistor-isolated DS1 monitor point, or ridges onto the line. Both the primary and secondary eceivers are monitored simultaneously.

Chapter 3 T1 DDS testingStatus LEDs

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Status LEDsThere are six status LEDs located on the front of the HST-3000, above the LCD screen. Table 10 describes how the LEDs operate.

Table 10 Status LEDsST-3000 T1 Testing Users Guide Revision A 61

LED Description

Sync A two-color LED that reports the signal status. Solid green indicates a signal is present and

there is frame synchronization on all active receivers.

Flashing green indicates auto-framing is running on at least one active receiver.

Solid red indicates that at least one of the active receivers or the DS0A19.2 channel does not have signal or frame synchronization.

If the Sync LED is not illuminated, no signal has been detected on any active receiver.

Data A two-color LED that reports pattern synchroniza-tion status. Solid green indicates pattern synchronization

has been achieved on all active receivers. Flashing green means auto pattern is running

on at least one active receiver. Solid red indicates that at least one of the active

receivers does not have pattern synchroniza-tion.

If the Data LED is not illuminated, it means the selected traffic pattern is live, or no pattern syn-chronization has been detected on any active receiver.

Error An LED that reports error conditions. If the Error LED is not illuminated it means all

Summary results are OK. Solid red indicates an error.

Chapter 3 T1 DDS testingStatus LEDs

62 H

Alarm An LED that reports alarm status. If the Alarm LED is not illuminated, then no

alarm was detected. Solid red indicates an alarm was detected.

Table 10 Status LEDs (Continued)

LED DescriptionST-3000 T1 Testing Users Guide Revision A

LpBk This LED indicates the local loopback state of the HST unit. Solid green indicates the HST has been placed

in loopback by the remote end. If the LpBk LED is not illuminated, there is no

local loopback.

Batt A three-color LED that indicates the battery status. The LED is off when the battery has a useful

charge. Solid green indicates the AC adapter is plugged

in. Solid red indicates the battery is at 20 percent or

below of full charge. Flashing red indicates about five minutes of use

remain. When this happens, the battery should be charged or replaced immediately.

Solid amber or flashing amber indicates the bat-tery capacity indicator (gas gauge) needs to be reset.

NOTE: For information about charging the battery, changing batteries, and resetting the battery capac-ity indicator, see the Acterna HST-3000 Base Unit Users Guide.

Chapter 3 T1 DDS testingMonitoring a DDS channel

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Monitoring a DDS channelWith the T1 DDS option, you can simultaneously monitor two DDS channels for transmission layer results, such as CRC and frame errors, or BPVs. The HST can be configured to monitor either the primary or secondary DDS channels.

T

T

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4


he following procedure describes how to monitor a circuit.

o monitor a DDS channel




Select Test Mode, and then select Monitor.

Select Payload, and then select T1-DDS.

NOTE:The transmitters (Tx) are turned off in Monitor mode.


64 H

6 Configure the remaining settings by pressing a number on the key pad that corresponds to the setting you want to configure. For example, press the 2 key to configure the primary input (Rx).You can also use the arrow keys to highlight the setting you want to change, and then press the OK key. Press the Cancel key to exit a menu. ST-3000 T1 Testing Users Guide Revision A

The following table describes all the available settings.

Setting Parameter

Pri. Input The primary input setting becomes effec-tive immediately and should be set before the HST is connected to the line. Set the Primary receiver (Rx) to one of the following: Bridge High impedance setting

used to connect to the line in a bridged arrangement, resistive termi-nation >1k .

Terminate Used to terminate a line with 100 .

DSX-Monitor (default) Used to connect to a protected monitor point (PMP) on the network equipment under test; provides a resistive termi-nation of 100 with 20dB gain applied to the input signal to compen-sate for the reduced PMP amplitude.

Sec. Input Set the Secondary receiver (Rx) to one of the following: Bridge Terminate DSX-Monitor For descriptions, see Pri. Input.


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Framing Select the framing format for the signal: Auto ESF D4 Extended SuperFrame

format SF D4 SuperFrame format


Press the DDS soft key.The DDS Settings menu appears.

Press a number on the keypad that corresponds to the setting you want to configure. For example press the 1 key to specify the data rate.

Line Coding Select one of the following line coding options: B8ZS Bipolar 8 zeros substitution AMI Alternate mark inversion

DS0 Channels Use the arrow keys to highlight one of the 24 channels (timeslots), and then press the OK key to select the DDS channel where you will perform the test.Press the Commit soft key to select the channel.

hst_t1_manual_rev a.pdf

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