Agilent Technologies OmniBER 718 SDH Manual de usuario

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Agilent Technologies UK Limited

Telecommunications Networks Test Division

South Queensferry

West Lothian, Scotland EH30 9TG

Copyright Agilent

Technologies. 2000

Reproduction, adaption, or

translation without prior

written permission is

prohibited, except as

allowed under the

Agilent Part No.

37718-90217

Printed in U.K. September

2000.

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to change without notice.

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The product is marked

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The product is marked

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2DRAFT

About This Book

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PDH/DSn/SDH/ATM/POS Operation

OmniBER 718 SDH User Guide

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This book tells you how to select the features that you want to use for your test.

The selections available are presented in the following groups:

• Transmit and receive interfaces

• Test features, for example, the addition of errors and alarms to the test signal

• Measurements including test timing

• Storing, logging and printing results with general printer information

• Using instrument and disk storage

• Using the “Other” features.

The selections available will depend on the options fitted to your instrument. The examples given in this

book cover all options and therefore may include selections which are not available on your instrument.

About This Book

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Contents

1 Introduction

Product Description 14

Conventions 15

Connecting to the Network 16

Cleaning Optical Connectors 19

Connecting Accessories 20

Front Panel Soft Recovery (Cold Start) 21

OmniBER 718 Option Guide 22

2 Setting the Interfaces

Setting PDH/DSn Transmit Interface

(option 012) 26

Setting DSn THRU Mode (option 012) 28

Setting SDH Transmit Interface 29

Setting Jitter Transmit Interface 34

Setting Wander Transmit Interface 36

Setting SDH THRU Mode 38

Using Smart Test 41

Setting PDH/DSn Receive Interface

(Option 012) 47

Setting SDH Receive Interface 49

Setting Jitter Receive Interface 50

Setting Extended Jitter Receive Interface 51

Setting Wander Receive Interface 52

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Contents

3 Selecting Test Features

Using Transmit Overhead Setup 54

Using Receive Overhead Monitor 56

Setting Overhead Trace Messages 58

Setting Overhead Labels 59

Generating Overhead Sequences 60

Using Receive Overhead Capture 62

Adding Frequency Offset to SDH Signal 64

Adding Frequency Offset to the PDH/DSn Signal 66

Setting up Signaling Bits 67

Setting Transmit Structured Payload/Test Signal 70

Setting Receive Structured Payload/Test Signal 72

Setting Transmit N x 64 kb/s/N x 56 kb/s

Structured Payload/Test Signal 73

Setting Receive N x 64 kb/s/N x 56 kb/s

Structured Payload/Test Signal 75

Inserting an External PDH/DSn Payload/Test Signal 76

Dropping an External Payload/Test Signal 79

Adding Errors & Alarms at the SDH Interface 82

Adding Errors & Alarms to a PDH signal 83

Using FEAC Codes 84

Setting PDH Spare Bits 86

Adding Pointer Adjustments 87

Using Pointer Graph Test Function 95

Stressing Optical Clock Recovery Circuits 97

Generating Automatic Protection Switch (APS) Messages 99

Inserting and Dropping the Data Communications Channel 104

Using DS1 LOOP Codes 105

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Contents

4 Making Measurements

Using Overhead BER Test Function 110

Test Timing 111

Performing a Trouble Scan 112

Making SDH Analysis Measurements 114

Making PDH Analysis Measurements 115

Measuring Frequency 116

Measuring Optical Power 117

Measuring Round Trip Delay 118

Monitoring Signaling Bits 120

Measuring Service Disruption Time 121

Performing an SDH Tributary Scan 124

Performing an SDH Alarm Scan 127

Performing a PDH/DSn Alarm Scan 128

Measuring Jitter 129

Measuring Extended Jitter 131

Measuring Wander 133

Measuring Jitter Tolerance 137

Measuring Jitter Transfer 142

Measuring Pointer Adjustment (Tributary) Jitter 148

5 ATM Operation

Setting up the Transmitter for ATM Payloads 154

Setting up the Convergence Sublayer 157

Setting Foreground Traffic 159

Setting Background Traffic 161

Setting Foreground and Background Distributions 162

Transmitting ATM Alarms 165

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Contents

Adding ATM Errors 167

Viewing ATM Results 169

Setting up the Receiver for ATM Payloads 170

Setting up the Receiver ATM signal 172

Policing ATM Traffic 174

Measuring ATM Delay Performance 176

Measuring ATM Alarms 179

ATM Service Disruption 180

6 Packet over SDH (POS)

POS Protocol Stack 184

Setting up the Transmitter for POS Payloads 185

Setting HDLC Framing, Scrambling and HDLC Frame Check

Sequence 187

Setting IP Packet (Datagram) Length and Inter-Packet Gap 190

Setting IP Header 192

Setting IP Addresses 193

Setting IP Payload 194

Adding POS Alarms 195

Adding POS Errors 196

Setting up the Receiver for POS Operation 197

Setting up the Receiver POS signal 199

Viewing POS Results 200

POS Applications 201

Channelized Testing 202

Fully Exercising POS Hardware Architecture 204

Throughput Testing 208

Continuity Test 212

POS Service Disruption 215

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Contents

HDLC Frame Stuffing 218

Jitter Tolerance Testing of POS Equipment 221

7 Tandem Connection Monitoring

Tandem Connection Monitoring (TCM) 226

Setting up the Transmitter for TCM Operation 227

Setting up TCM Access Point Identifier (APId) messages 228

Adding TCM errors 230

Adding TCM Alarms 231

Setting up the Receiver for TCM operation 232

Detecting TCM APId messages 233

Viewing TCM Errors and Alarms 235

Tandem Connection Terminating Equipment (TCTE) Testing 237

8 Storing, Logging and Printing

Saving Graphics Results to Instrument Store 244

Recalling Stored Graph Results 245

Viewing the Bar Graph Display 247

Viewing the Graphics Error and Alarm Summaries 249

Logging Graph Displays 251

Logging Results 253

Logging on Demand 261

Logging Jitter Tolerance Results 264

Logging Jitter Transfer Results 266

Logging Results to Parallel (Centronics) Printer 267

Logging Results to GP-IB Printer 268

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