Agilent Technologies OmniBER 718 SDH User manual

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Agilent Technologies UK Limited
Telecommunications Networks Test Division
South Queensferry
West Lothian, Scotland EH30 9TG
Copyright Agilent
Technologies. 2000
All rights reserved.
Reproduction, adaption, or
translation without prior
written permission is
prohibited, except as
allowed under the
copyright laws.
Agilent Part No.
37718-90217
Printed in U.K. September
2000.
Warranty
The information contained
in this document is subject
to change without notice.
Agilent Technologies
makes no warranty of any
kind with regard to this
material, including, but
not limited to, the implied
warranties or
merchantabilityandfitness
for a particular purpose.
Agilent Technologies shall
not be liable for errors
contained herein or for
incidental or consequential
damages in connection
with the furnishing,
performance, or use of this
material.
WARNING
Warning Symbols Used on
the Product
The product is marked
with this symbol when the
user should refer to the
instruction manual in order
to protect the apparatus
against damage.
The product is marked
with this symbol to
indicate that hazardous
voltages are present
The product is marked
with this symbol to
indicate that a laser is
fitted. The user should
refer to the laser safety
information in the
Verification manual.
!
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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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4
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
5
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
7
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
9
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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Contents
Logging Results to Internal Printer 269
Logging Results to RS-232-C Printer 270
Printing Results from Disk 271
Connecting a Printer to a Parallel Port 272
Changing Internal Printer Paper 273
Cleaning Internal Printer Print Head 276
9 Using Instrument and Disk Storage
Storing Configurations in Instrument Store 278
Titling Configuration in Instrument Store 279
Recalling Configurations from Instrument Store 280
Formatting a Disk 281
Labeling a Disk 282
Managing Files and Directories on Disk 283
Saving Graphical Results to Disk 290
Saving a Screen Dump to Disk 292
Saving Data Logging to Disk 294
Saving Configurations to Disk 295
Recalling Configuration from Disk 296
Recalling Graphics Results from Disk 297
Copying Configuration from Instrument Store to Disk 298
Copying Configuration from Disk to Instrument Store 300
Copying Graphics Results from Instrument Store to Disk 302
10 Selecting and Using "Other" Features
Coupling Transmit and Receive Settings 306
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Contents
11
Setting Time & Date 307
Enabling Keyboard Lock 308
Enabling Beep on Received Error 309
In-Band DS1 Loopcode 156MTS Compatibility 310
Suspending Test on Signal Loss 311
MS-REI Result/Enable 312
MS-AIS Result/Enable 313
Graph Storage Resolution 314
Setting Error Threshold Indication 315
Setting Screen Brightness and Color 316
To Generate a New Jitter Mask 317
To change the parameters of a User-defined jitter mask 319
Running Self Test 321
Trigger Output 324
11 AU-3/TUG-3 Background Patterns
12 ETSI/ANSI Terminology
ETSI/ANSI Conversion and Equivalent Terms 330
13 Glossary of Terms
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12
Contents
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1
1Introduction
"Product Description " page 14
"Conventions " page 15
"Connecting to the Network " page 16
"Connecting Accessories " page 20
"Front Panel Soft Recovery (Cold Start) " page 21
"OmniBER 718 Option Guide " page 22
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Product Description
Product Description
The OmniBER Communications Performance Analyzer provides all the test
capability you need to fully verify the performance of today’s high-capacity
transmission systems and networks.
The main features of a dual standard (SDH/SONET) instrument are as follows:
• Multi-rate BER and jitter testing from 64 kb/s to 2.5 Gb/s (STM-16/OC-48).
• Concatenated payloads testing to STM-16c.
• Full PDH/T-carrier testing.
• Direct measurement of protection switching time.
• Powerful thru-mode testing for SDH/SONET ring turn-up.
• Comprehensive SDH/SONET overhead testing.
• Packet over SONET/SDH (POS) and ATM payloads up to 2.5 Gb/s.
• Fast access to key measurement tasks via Smart Test.
• Optical power and line frequency measurements.
• J0 section trace for DWDM testing
• J1 and J2 path trace for network path testing
• Optional integrated graphical printer
• Line frequency offset
• Transmit and Receive can be independently configured.
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15
Conventions
Conventions
The conventions used in this manual to illustrate instrument keys and display
information are as follows:
This is an example of a hardkey. Hardkeys (located to the right of the display) are
used to give access to different sets of instrument settings, or select dedicated
instrument functions. The key shown here displays the transmit settings.
This is an example of a softkey. Softkeys (located below the display) are used to
select instrument settings. The values associated with softkeys change as you move
the display cursor from one instrument setting to another.
These are the cursor control keys. They are used to move the display cursor from
one instrument setting to another.
This is an example of a pop-up menu. Pop-up menus are an alternative way of
selecting instruments settings (instead of using softkeys). To access a pop-up menu,
highlight an instrument setting, then use the key.
This symbol (when it appears next to settings on the display) indicates that there is a
pop-up menu associated with the instrument setting. To access a pop-up application,
highlight the instrument setting which has this symbol, then use the key.
This symbol appears at the bottom right of the display when an optical transmit
module is fitted to the instrument. The symbol’s background changes from black to
yellow when the optical output is switched on.
TRANSMIT
PARALLEL
SET
SET
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16
Connecting to the Network
Connecting to the Network
The network connectors are located on the modules at the side of the instrument.
The connections available depend on the options fitted to your instrument.
Before connecting, note the Warning and Caution information given.
All Connectors
CAUTION When connecting or disconnecting, ensure that you are grounded or,
make contact with the metal surface of the Mainframe with your free hand to bring
you, the module, and the mainframe to the same static potential.
Modules remain susceptible to ESD damage while the module is installed in the
Mainframe
Additional ESD information is required when servicing, see your Installation/
Verification manual for further information.
Optical Interface Connectors
For your protection, review all laser information given in this manual and the
Verification manual before installing or using the instrument.
WARNING To prevent personal injury, avoid use that may be hazardous to others, and
maintain the module in a safe condition Ensure the information given below is
reviewed before operating the module.
Laser Product Classification
All optical modules are classified as Class I (non-hazardous) laser product in the
USA which complies with the United States Food and Drug Administration (FDA)
Standard 21 CFR Ch.1 1040.10, and are classified as Class 1 (non-hazardous) laser
products in Europe which complies with EN 60825-1 (1994).
To avoid hazardous exposure to laser radiation, it is recommended that the following
practices are observed during system operation:
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17
Connecting to the Network
•ALWAYS DEACTIVATE THE LASER BEFORE CONNECTING OR
DISCONNECTING OPTICAL CABLES.
• When connecting or disconnecting optical cables between the module and de-
vice-under-test, observe the connection sequences given below.
Connecting: Connect the optical cable to the input of the device-under-test
before connecting to the module’s Optical Out connector.
Disconnecting: Disconnect the optical cable from the module’s Optical Out
connector before disconnecting from the device-under-test.
Always fit the fibre optic connector dust caps over the laser
aperture.
• NEVER examine or stare into the open end of a broken, severed, or disconnected
optical cable when it is connected to the module’s Optical Out connector.
• Arrange for service-trained personnel, who are aware of the hazards involved, to
repair optical cables.
CAUTION 1. Use of controls or adjustments or performance of procedures other than those
specified herein may result in hazardous radiation exposure.
2. Always fit the fibre optic connector dust caps on each connector when not in use.
Before connection is made, always clean the connector ferrule tip with acetone or
alcohol and a cotton swab. Dry the connector with compressed air. Failure to
maintain cleanliness of connectors is liable to cause excessive insertion loss.
Laser Warning Symbols
The front panel of the optical module has the following label:
CLASS 1 LASER PRODUCT
NOTE CLASS 1 LASER PRODUCT translates as follows:
Finnish - LUOKAN 1 LASERLAITE
Finnish/Swedish - KLASS 1 LASER APPARAT
This label indicates that the radiant energy present in this instrument is non-
hazardous.
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18
Connecting to the Network
OPTICAL IN Allows connection of an optical signal, wavelength 1200 to 1600 nm, at a maximum
power level of -8 dBm (37718A 2.5 Gb/s) or -3 dBm (37718B/C).
NEVER EXCEED +3 dBm.
Accepts STM-0, STM-1, STM-4 and STM-16. Also accepts SONET signals OC-1,
OC-3, OC-12, and OC-48 depending on the model and options fitted.
OPTICAL OUT Provides an STM-0, STM-1, STM-4 or STM-16 optical signal (OC-1, OC-3, OC-12
or OC-48 SONET signals) at wavelength 1280 to 1335nm, and/or 1480 to 1580 nm,
at a nominal power level of +1 dBm depending on model and options.
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19
Cleaning Optical Connectors
Cleaning Optical Connectors
It is recommended that the optical connectors be cleaned at regular intervals using
the following materials:
CAUTION Do not insert any tool or object into the IN or OUT ports of the instrument as damage
to or contamination of the optical fibre may result.
1Recall Default settings (STORED SETTINGS 0) and remove the power fromthe
OmniBER 718.
2Remove the adapters from the IN and OUT ports. Use an 11 mm spanner to
slacken the nut securing the adapter. On re-assembly tighten the nut using a
torque spanner to 1.5 Nm.
3Using the blow brush with the brush removed blow through the ferrule of the
standard flexible connector and the adapter.
CAUTION If the optical fibre of the fixed connector requires further cleaning this entails
disassembly of the module which should only be carried out by suitably trained
service personnel.
4Applysomeisopropylalcoholto a piece of thecleaningpaperandcleanthe barrel
of the adapter. Using a new piece of cleaning paper, clean the face of the adapter.
Repeat this operation, using a new piece of cleaning paper each time.
5Lightly press the adhesive side of the tape provided against the front of the
adapter, then remove it quickly - repeat twice. This removes any particles of
cleaning paper which may be present.
6Replace the adapters on the flexible connector.
Description Part Number
Blow Brush 9300-1131
Isopropyl Alcohol 8500-5344
Lens Cleaning Paper 9300-0761
Adhesive Tape Kit 15475-68701
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