Agilent Technologies OmniBER 720 User manual

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OmniBER 720
User Guide
Printed in U.K. 05/00
J1407-90003
UserGuide
OmniBER 720
In This Book
This book tells you how to select and use
the various instrument functions available.
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Agilent Technologies UK Limited
Telecommunications Networks Test Division
South Queensferry
West Lothian, Scotland EH30 9TG
Agilent Technologies
2000
All rights reserved.
Reproduction, adaption, or
translation without prior
written permission is
prohibited, except as
allowed under the
copyright laws.
Part No.
J1407-90011
Printed in U.K. 12/00
Warranty
The information contained
in this document is subject
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 inorder
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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User Guide
OmniBER 720OmniBER 720
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2
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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3
List of Contents
Introduction
Product Description ............................................................ 10
Conventions ........................................................................ 11
Connecting to the Network................................................. 12
Removing/Inserting Modules ........................................... 12
All Connectors.................................................................. 12
Optical Interface Connectors ............................................ 13
Cleaning Optical Connectors............................................ 15
Connecting Accessories...................................................... 16
10 Base-T Lan Connection Radiated Emissions............... 16
Front Panel Soft Recovery (Cold Start).............................. 17
OmniBER 720 Options....................................................... 18
Setting the Interfaces - SDH Operation
Setting Transmit Interface ................................................. 20
Setting THRU Mode........................................................... 24
Using Smart Test ................................................................ 27
Setting Receive Interface................................................... 30
Selecting Test Features - SDH Operation
Using Transmit Overhead Setup......................................... 32
Using Receive Overhead Monitor ...................................... 34
Setting Overhead Trace Messages...................................... 36
Setting Overhead Labels..................................................... 37
Generating Overhead Sequences ........................................ 38
Using Receive Overhead Capture....................................... 40
Adding Frequency Offset.................................................... 42
Adding Errors and Alarms ................................................. 43
Adding Pointer Adjustments............................................... 44
Jitter caused by Pointer Adjustments................................ 44
G.783 Pointer Sequences Explained ................................ 46
Using Pointer Graph Test Function................................... 52
Stressing Optical Clock Recovery Circuits ........................ 54
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4
List of Contents
Generating Automatic Protection Switch Messages......... 56
Inserting and Dropping the Data Communications Channel 57
Setting the Interfaces - SONET Operation
Setting Transmit Interface................................................... 60
Setting THRU Mode ........................................................... 64
Using Smart Test................................................................. 67
Setting Receive Interface..................................................... 70
Selecting Test Features - SONET Operation
Using Transmit Overhead Setup ......................................... 74
Using Receive Overhead Monitor....................................... 76
Setting Overhead Trace Messages ...................................... 78
Setting Overhead Labels ..................................................... 79
Generating Overhead Sequences......................................... 80
Using Receive Overhead Capture ....................................... 82
Adding Frequency Offset.................................................... 84
Adding Errors and Alarms ................................................. 85
Adding Pointer Adjustments............................................... 86
Jitter Caused by Pointer Adjustments .............................. 86
T1.105/GR-253 Pointer Sequences Explained................. 88
Using Pointer Graph Test Function.................................... 94
Stressing Optical Clock Recovery Circuits......................... 96
Generating Automatic Protection Switch Messages......... 98
Inserting and Dropping the Data Communications Channel 99
Making Measurements
Using Overhead BER Test Function................................... 102
Performing a Trouble Scan ................................................. 103
Test Timing ......................................................................... 105
Making Analysis Measurements......................................... 106
Measuring Frequency ......................................................... 107
Measuring Optical Power.................................................... 108
Performing a Tributary Scan............................................... 109
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5
List of Contents
Performing an SDH Alarm Scan......................................... 112
Performing a SONET Alarm Scan...................................... 113
Tandem Connection Monitoring
Tandem Connection Monitoring (TCM)............................. 116
What is a Tandem Connection?........................................ 116
TCM Test Capability in OmniBER.................................. 116
Setting up the Transmitter for TCM Operation................... 117
Setting up TCM Access Point Identifier (APId) messages 118
Adding TCM errors............................................................. 120
Adding TCM Alarms .......................................................... 121
Setting up the Receiver for TCM operation........................ 122
Detecting TCM APId messages .......................................... 123
Viewing TCM Errors and Alarms....................................... 125
Tandem Connection Terminating Equipment (TCTE) Testing 127
TCTE Source Testing....................................................... 127
TCTE Sink/Source Testing .............................................. 132
Storing, Logging and Printing
Saving Graphics Results to Instrument Store...................... 134
Recalling Stored Graph Results .......................................... 135
Viewing the Bar Graph Display.......................................... 137
Viewing the Graphic Error and Alarm Summaries............. 139
Logging Graph Displays ..................................................... 141
Logging Results................................................................... 143
Logging on Demand............................................................ 146
Logging Results to Parallel (Centronics) Printer ................ 148
Logging Results to GPIB Printer......................................... 149
Logging Results to Internal Printer..................................... 150
Logging Results to RS-232-C Printer ................................. 151
Logging Data to Disk.......................................................... 152
Printing Results from Disk.................................................. 153
PC Instructions................................................................. 153
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6
List of Contents
Connecting an HP Printer to a Parallel Port ....................... 154
Changing Internal Printer Paper.......................................... 155
Cleaning Internal Printer Print Head................................... 158
Using Instrument and Disk Storage
Storing Configurations in Instrument Store........................ 160
Titling Configuration in Instrument Store........................... 161
Recalling Configurations from Instrument Store................ 162
Formatting a Disk................................................................ 163
Labeling a Disk................................................................... 164
Accessing Directories and Selecting Files.......................... 165
Storing/Retrieving Data to/from Disk................................. 167
Saving Graphical Results to Disk ....................................... 168
Recalling Graphics Results from Disk................................ 170
Copying Graphics Results from Instrument Store to Disk.. 171
Saving Configurations to Disk............................................ 173
Recalling Configuration from Disk..................................... 174
Copying Configuration from Instrument Store to Disk...... 175
Copying Configuration from Disk to Instrument Store...... 177
Managing Files and Directories on Disk............................. 179
Creating a Directory on Disk ........................................... 179
Deleting a Directory on Disk ........................................... 180
Renaming a File on Disk.................................................. 181
Deleting a File on Disk .................................................... 182
Adding Descriptors to Disk Files..................................... 183
Selecting and Using "OTHER" Features
Coupling Transmit and Receive Settings............................ 186
Setting Time & Date ........................................................... 187
Enabling Keyboard Lock .................................................... 188
Enabling Beep on Received Error....................................... 189
Suspending Test on Signal Loss ......................................... 190
REI-L/MS-REI Result/Enable ........................................... 191
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7
List of Contents
Graph Storage Resolution .................................................. 192
PRBS Polarity Control (Option 003 only).......................... 193
Setting Error Threshold Indication ..................................... 194
Setting Screen Brightness and Color.................................. 195
Dumping Display to Disk................................................... 196
Running Self Test ............................................................... 198
Background Patterns
SDH Operation ................................................................ 202
SONET Operation............................................................ 203
ETSI/ANSI Terminology
ETSI/ANSI Conversion and Equivalent Terms................. 206
Glossary of Terms
Glossary ............................................................................. 210
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8
List of Contents
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1
1Introduction
“Product Description " page 10
“Conventions " page 11
“Connecting to the Network " page 12
“Connecting Accessories " page 16
“Front Panel Soft Recovery (Cold Start) " page 17
“OmniBER 720 Options " page 18
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10
Introduction
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 transmission testing from OC-1 to OC-48 and STM-0 to STM-16
optical.
• Supports concatenated payloads of STS-48c to VT 1.5 and AU-4-16c to TU-11.
• Optical power and line frequency measurements.
• Powerful thru-mode testing for SDH/SONET ring turn-up.
• Comprehensive SDH/SONET overhead testing.
• J0 section trace for DWDM testing
• J1 and J2 path trace for network path testing
• Line frequency offset
• Optional integrated graphical printer
• Fast access to key measurement tasks via SmartTest.
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11
Introduction
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 application 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 goes active.
TRANSMIT
PARALLEL
SET
SET
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12
Introduction
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.
Removing/Inserting Modules
Modules should only be removed or inserted by trained personnel.
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 Verification
manual for further information.
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13
Introduction
Connecting to the Network
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 avoidhazardous exposure to laser radiation, it is recommended that the following
practices are observed during system operation:
•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.
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14
Introduction
Connecting to the Network
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.
OPTICAL IN
Allows connection of an optical signal, wavelength 1200 to 1600 nm, at a maximum
input power level of -8 dBm. NEVER EXCEED +3 dBm.
Accepts SONET signals OC-1, OC-3, OC-12 and OC-48 and SDH signals STM-0,
STM-1, STM-4 and STM-16 depending on the instrument options fitted.
OPTICAL OUT
Provides optical signals OC-1, OC-3, OC-12 or OC-48 at wavelength 1290 nm to
1330 nm, at a typical power level of +1 dBm. Also provides SDH signals STM-0,
STM-1, STM-4 and STM-16 depending on the instrument options fitted.
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15
Introduction
Connecting to the Network
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 powerfrom the
OmniBER 720.
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 HP Part Number
Blow Brush 9300-1131
Isopropyl Alcohol 8500-5344
Lens Cleaning Paper 9300-0761
Adhesive Tape Kit 15475-68701
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16
Introduction
Connecting Accessories
Connecting Accessories
LID
Provides the output for the option 602 printer which is fitted in the cover (LID) of
the instrument.
VGA
Provides the output for a display monitor.
Printer
GPIB, RS232,
PARALLEL ONLY
External printer connection details are given in Chapter 7 page 154 .
The port selected for external printer use is not available for remote control.
Remote Control
GPIB, RS232,
10 BASE -T
Remote control connection is given in the Remote Control Manual.
The port selected for remote control use is not available for an external printer.
10 Base-T Lan Connection Radiated Emissions
To ensure compliance with EN 55011 (1991) a category 5, FTP patch lead, RJ45
cable should be used to connect the LAN port on the processor module marked
“10 Base-T”.
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17
Introduction
Front Panel Soft Recovery (Cold Start)
Front Panel Soft Recovery (Cold Start)
Use the following procedure if you need to perform a front panel soft recovery (i.e.
cold start) of the instrument.
Soft Recovery Procedure
1Switch off the instrument.
2On the instrument front panel - press and hold softkeys 0 and 4 simultaneously
(the softkeys immediately below the display; key 0 is on the extreme left).
3Power up the OmniBER 720 while holding the softkeys pressed.
4When the LOS LED has flashed OFF and then ON again, the keys can be
released.
5The LOS LED will flash OFF/ON again several times (7), followed by an audible
‘beep’ and the display indicating ‘Initializing Instrument’.
6Once the initialization is complete the display will indicate:
‘Firmware Revision Update’
‘Default settings assumed’
Hit any key to attempt restart’
7Hit any key, then wait approximately 10 seconds. The instrument should return
to its default settings and normal operation.
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