Tektronix TARGET1 User Manual

User Manual
TARGET1 Trace Analysis, Report Generation and Emulation Tool
071-0870-02
This document applies to firmware version 3.00 and above.
www.tektronix.com
Use, duplication, or disclosure by the Government is subject to restrictions as set forth in subparagraph (c)(1)(ii) of the Rights in Technical Data and Computer Software clause at DFARS 252.227-7013, or subparagraphs (c)(1) and (2) of the Commercial Computer Software -- Restricted Rights clause at FAR 52.227-19, as applicable.
Tektronix products are covered by U.S. and foreign patents, issued and pending. Information in this publication supercedes that in all previously published material. Specifications and price change privileges reserved.
Tektronix, Inc., P.O. Box 500, Beaverton, OR 97077
TEKTRONIX, TEK, TARGET1, and NETTEK are registered trademarks of Tektronix, Inc.
WARRANTY
Tektronix warrants that the media on which this software product is furnished and the encoding of the programs on the media will be free from defects in materials and workmanship for a period of three (3) months from the date of shipment. If a medium or encoding proves defective during the warranty period, Tektronix will provide a replacement in exchange for the defective medium. Except as to the media on which this software product is furnished, this software product is provided “as is” without warranty of any kind, either express or implied. Tektronix does not warrant that the functions contained in this software product will meet Customer’s requirements or that the operation of the programs will be uninterrupted or error-free.
In order to obtain service under this warranty, Customer must notify Tektronix of the defect before the expiration of the warranty period. If Tektronix is unable to provide a replacement that is free from defects in materials and workmanship within a reasonable time thereafter, Customer may terminate the license for this software product and return this software product and any associated materials for credit or refund.
THIS W ARRANTY IS GIVEN BY TEKTRONIX IN LIEU OF ANY OTHER W ARRANTIES, EXPRESS OR IMPLIED. TEKTRONIX AND ITS VENDORS DISCLAIM ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. TEKTRONIX’ RESPONSIBILITY TO REPLACE DEFECTIVE MEDIA OR REFUND CUSTOMER’S PAYMENT IS THE SOLE AND EXCLUSIVE REMEDY PROVIDED TO THE CUSTOMER FOR BREACH OF THIS WARRANTY. TEKTRONIX AND ITS VENDORS WILL NOT BE LIABLE FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES IRRESPECTIVE OF WHETHER TEKTRONIX OR THE VENDOR HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES.

Table of Contents

Preface v...................................................
Related Documentation v...........................................
Manual Conventions v..............................................
Contacting Tektronix vi.............................................
Getting Started
Getting Started 1--1............................................
Product Description 1--1..............................................
WhatYouNeedtoKnow 1--3..........................................
Recommended Minimum Operating Requirements 1-- 4.....................
Printers 1-- 4........................................................
Installation 1-- 5.....................................................
After Installation 1-- 6.................................................
IfYouNeedHelp 1--6................................................
Starting the TARGET1 Application 1-- 7..................................
TARGET1 Application Packages 1--8....................................
OTDR Software Package
OTDR Trace Analysis Mode 2--1.................................
Open a Trace File 2-- 1................................................
Functional Overview of Trace Analysis Mode 2--3.........................
View Options 2--4...................................................
Trace Area 2-- 4.....................................................
Event Table 2-- 9.....................................................
Test Settings Panel 2--11...............................................
Control Panel 2--12...................................................
Menu Selection and Toolbar Button Descriptions 2--13.......................
OTDR Trace Analysis Mode Measurements 2--32...........................
Distance Measurements 2-- 32...........................................
Event Loss Measurements 2-- 33.........................................
Two-Point Measurements 2--37..........................................
Reflectance Measurements 2--39.........................................
ORL Measurements 2--42..............................................
Bidirectional Measurements 2--43........................................
Difference Measurements 2-- 45..........................................
Editing the Event Table 2 --46...........................................
OTDR Report Generator Mode 2--49..............................
Functional Overview 2--49.............................................
Using the Report Wizard 2--56..........................................
Report Formats 2--74..................................................
TARGET1 Trace Analysis, Report Generation and Emulation Tool User Manual
i
Table of Contents
Virtual CE for NetTek
Glossary Index
Virtual CE for NetTek 3--1......................................
Requirements 3--1...................................................
Installation 3-- 1.....................................................
ii
TARGET1 Trace Analysis, Report Generation and Emulation Tool User Manual

List of Figures

Table of Contents
Figure 1--1: Application startup dialog box 1--7.....................
Figure 2--1: Open file selection dialog box 2--2.....................
Figure 2--2: OTDR trace analysis display 2--3......................
Figure 2--3: Event and landmark indicators on the OTDR trace 2--6...
Figure 2--4: Trace with zoom box 2-- 7.............................
Figure 2--5: Zoomed trace with overview window 2--8...............
Figure 2--6: Event table 2--9.....................................
Figure 2--7: Test settings panel 2--1 1...............................
Figure 2--8: Control panel 2--12...................................
Figure 2--9: Customize toolbar selection window 2--17................
Figure 2--10: About Trace(s) dialog box (shows original OTDR
acquisition settings) 2--18.....................................
Figure 2--11: Changing or displaying the current test settings
and limits 2--20.............................................
Figure 2--12: Refractive Index dialog box 2--21......................
Figure 2--13: Export Data File dialog box 2--25......................
Figure 2--14: Add Event dialog box controls 2--28....................
Figure 2--15: Move Event dialog box controls 2--29...................
Figure 2--16: Event Loss Measurement dialog box 2--33...............
Figure 2--17: Advanced controls for Event Loss Measurement 2--33.....
Figure 2--18: Manual event loss cursor around active cursor 2--34......
Figure 2--19: Loss cursor position controls 2--35.....................
Figure 2--20: Two Point Measurement dialog box 2--37...............
Figure 2--21: Two Point Measurement advanced controls 2--38.........
Figure 2--22: Two-point measurement display 2--39..................
Figure 2--23: Reflectance measurement advanced controls 2--40........
Figure 2--24: Manual Reflectance measurement 2--41.................
Figure 2--25: ORL measurement 2--42.............................
Figure 2--26: Bidirectional average trace display 2--44................
Figure 2--27: Report Generator display with both trace and
event table showing 2--49.....................................
Figure 2--28: OTDR report summary and cable information boxes 2--50.
Figure 2--29: Report date selection calendar 2--55....................
Figure 2--30: Report Wizard Files dialog box, part 1 2--57.............
Figure 2--31: Report Wizard Files dialog box, part 2 2--59.............
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Table of Contents
Figure 2--32: Select file navigation screen 2--60......................
Figure 2--33: Report Wizard File Selected dialog box 2--61............
Figure 2--34: Search File dialog box 2--64...........................
Figure 2--35: Search by date option 2--64...........................
Figure 2--36: Search by parameter option 2--65......................
Figure 2--37: Template events info tab 2--66.........................
Figure 2--38: Template general information dialog box 2--67...........
Figure 2--39: Add event or landmark to template dialog box 2--68......
Figure 2--40: Template Options dialog box 2--69.....................
Figure 2--41: Report Wizard analysis dialog box 2--71................
Figure 2--42: Analysis Auto Two-Point Measurement options 2--71.....
Figure 2--43: Analysis Auto Zoom options 2--72.....................
Figure 2--44: Test Settings and Limits 2--73.........................
Figure 2--45: Summary Report component selection 2--74.............
Figure 2 --46: Summary table element selections 2--76.................
Figure 2--47: Report Summary element selections 2--77...............
Figure 2 --48: Summary Cable element selections 2--78................
Figure 2--49: Report Header and Footer element selections 2--79.......
Figure 2--50: Batch report component selections 2--81................
Figure 2--51: Batch Report Event Table Options dialog box 2--82.......
Figure 2--52: Selecting the report page layout 2--82...................

List of Tables

iv
Table 2--1: Event Table column definitions 2--10....................
Table 2-- 2: TARGET1 menu selections 2--13........................
Table 2--3: Default values for Refractive Index by wavelength 2--22....
Table 2--4: Default values for Backscatter by wavelength 2--23........
Table 2-- 5: Report Generator control panel 2--52...................
T able 2--6: TARGET1 Report Generator menu selections 2--53........
T able 2--7: Header/Footer Page Element shortcut icons 2--80..........
TARGET1 Trace Analysis, Report Generation and Emulation Tool User Manual

Preface

Related Documentation

The Target1 application allows you to work with files produced by the Optical Time Domain Reflectometer (OTDR).
The OTDR Trace Analysis Package has two modes:
H Trace Analysis mode. Use this mode to view individual files or pairs of files
(bidirectional and difference pairs) and manipulate them in the same ways that you can with the OTDR. You cannot collect new data, but you can manually adjust events, perform tests, add landmarks, and add notes about the fiber or about events. See OTDR Trace Analysis Mode on page 2--1.
H Report Generation mode. Use this mode to view and manipulate data from
multiple OTDR files at once. You can generate reports using a wizard that walks you through selecting the files, applying a template, doing additional tests, changing settings, setting limits, and formatting the information for printing. See OTDR Report Generator Mode on page 2--49.

Manual Conventions

Refer to the manuals and online help of your optical test equipment for detailed information about collecting data.
This book uses the following convention to represent menus:
H To open a file, you would be instructed to select File > Op en . To accomplish
this, click File in the menubar at the top of the window; then click Open in the drop down window.
H Words in italics, such as event loss, indicate a glossary term.
TARGET1 Trace Analysis, Report Generation and Emulation Tool User Manual
v
Preface

Contacting Tektronix

Phone 1-800-833-9200*
Address Tektronix, Inc.
Department or name (if known) 14200 SW Karl Braun Drive P.O. Box 500 Beaverton, OR 97077 USA
Web site www.tektronix.com
Sales support 1-800-833-9200, select option 1*
Service support 1-800-833-9200, select option 2*
Technical support Email: techsupport@tektronix.com
1-800-833-9200, select option 3*
6:00 a.m. -- 5:00 p.m. Pacific time
* This phone number is toll free in North America. After office hours, please leave a
voice mail message. Outside North America, contact a Tektronix sales office or distributor; see the Tektronix web site for a list of offices.
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TARGET1 Trace Analysis, Report Generation and Emulation Tool User Manual
Getting Started

Getting Started

Product Description

Use the information in this section to install and become familiar with the TARGET1 software.
You receive the following items when you order the TARGET1 trace analysis application:
H TARGET1 CD
H TARGET1 User Manual
When you open the package, check to see that each of these items is included. The software CD is sealed inside an envelope printed with the license agreement. Breaking the seal on the envelope indicates acceptance of the terms of the agreement.
The Tektronix TARGET1 Trace Analysis, Report Generation and Emulation Tool allows you to use an IBM-compatible PC Windows platform and color monitor to display and analyze waveforms acquired by a Tektronix optical time-domain reflectometer (OTDR). You can also convert waveform files from some other industry-compatible OTDR manufacturers for analysis using TARGET1.
The TARGET1 software saves time by automating the documentation and analysis tasks for large count fiber bundles. The application delivers a summary report of the fiber data showing parameters that most concern the network engineer or maintenance technician. It also provides a report file that can be saved and printed for record keeping and proof-of-performance documentation.
What Can TARGET1 Do?
TARGET1 Trace Analysis, Report Generation and Emulation Tool User Manual
Use your OTDR to take measurements on your fiber system and save them on a floppy-disk file or other electronic file server. Copy the files to the PC, and then use the TARGET1 application to manipulate and analyze the measurement data.
Where practical, the PC software reproduces the OTDR functions, including:
H Tektronix OTDR display elements, including the waveform with event and
landmark indicators, distance and loss axes, and distance cursors.
H Reads fiber trace files from a floppy disk or a PC hard disk.
H Reads OTDR and mini-OTDR traces.
H All measurement capabilities of an OTDR.
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Getting Started
H Two Point loss/distance, Event Loss, Optical Return Loss (ORL), and
Reflectance measurement modes, with automatic and manual measurements available.
H Distance cursor readouts provide distance from front panel and A to B
distance difference on screen.
Analysis and documentation tools include the following:
H Dual-trace mode to compare waveforms and events.
H Expanded-view function (zoom box) for closer inspection of trace details.
H Event editing for adding, deleting, or moving events and updating measure-
ments to reflect analysis results.
H Landmark marking for recording street locations, manholes, poles, buried
closures, or other physical features that can be associated with the locations of the fiber splices, connectors, and other events.
H Event and landmark note editing for adding, deleting, or changing notes to
document important fiber information.
Capabilities
H Fiber test file storage on the PC for system documentation, fault location,
and preventive maintenance.
In addition, the TARGET1 application can measure trace subtraction (differ­ence), bidirectional events averaging, and apply event templates to OTDR test traces.
The TARGET1 application implements OTDR front-panel control functions using a two- or three-button mouse, the PC keyboard, and measurement and parameter tool bars displayed on the PC screen.
A menu bar appears at the top of the display. Pull-down menus are available for file management and printing functions, view options and settings selections, waveform functions such as event editing and measurements, dual-trace selection, display window selection, remote connection, and online help.
A second menu bar, the tool bar, provides shortcut icons you can use to directly select a feature or function of the application. The tool bar can be customized to show selected sets of shortcut icons.
You can send trace and event tables to a connected printer or save them to a print file.
You can also export waveform graphics, waveform parameters, waveform data, and event-table data for use with document or spreadsheet programs.
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Online help provides information on each dialog box with expanded help information available through the help contents and index linking.
TARGET1 Trace Analysis, Report Generation and Emulation Tool User Manual
Getting Started
File Formats
The TARGET1 application can read and save CFF and SOR files. It can read WFM and EVT format files.
TFP2 files and TFP2A files that were saved in FiberMaster format are directly compatible with the TARGET1 application.
TFS3031 files are in CFF (Tektronix Common File Format), and are directly compatible with TARGET1. If the optical test equipment has a floppy disk drive, you can transfer files from the OTDR to the PC using a floppy disk.
The TARGET1 trace analysis software can read files compatible with the Telcordia SOR (standard optical record) format as defined in Telcordia GR-196-CORE. These include files from Tektronix NetTek OTDRs as well as from other OTDRs that save files compliant with Telcordia GR-196-CORE SOR Ver sio n 1.

What You Need to Know

A basic knowledge of your Windows operating system is required to install and operate your TARGET1 application. Familiarity with operation of Tektronix optical signal test equipment is helpful for understanding the functions of the TARGET1 software (refer to the appropriate equipment user manual for details). You must understand the following:
H Windows directory structure and file-naming conventions.
H How to log onto a particular disk drive.
H How to copy, rename, and delete files, and how to create directories.
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Getting Started

Recommended Minimum Operating Requirements

The TARGET1 application requires a PC capable of running in Windows 95, 98, 2000, NT, ME, or XP. You will need a mouse and a compact disc reader.
Processor 300 MHz Pentium
Memory 32 MB
Operating System Windows 95/98, Windows 2000, Windows NT,
Windows ME, or Windows XP
Graphics Adapter VGA or SVGA, 256 colors or better recom-
mended
Monitor SVGA, 800 x 600 minimum resolution
Fixed Disk Drive 10 MB minimum free
Compact Disk Drive Required to load the application software

Printers

Mouse Either a two- or three-button Microsoft-compat-
ible mouse.
Any printer compatible with your version of Windows and for which you have a printer driver set up can be used for printing. A graphics-capable printer is required to output graphic files. A color printer may be used to produce color images for the screen captures and reports.
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TARGET1 Trace Analysis, Report Generation and Emulation Tool User Manual

Installation

Getting Started
The TARGET1 application is provided on a compact disc (CD).
Install the software on your PC as follows:
NOTE. Remove any previous versions of the TARGET1 software prior to installation. Use the Windows Add/Remove Programs utillity to remove the TARGET1 software.
1. Insert the TARGET1 CD-ROM into the CD drive of your PC.
2. Navigate to the contents of the TARGET1 CD-ROM using My Computer or
Windows Explorer.
Double click on the file TARGET1_xxxxx.exe (where xxxxx is the software version number) to run the installation program.
3. Follow the prompts to install the software on your hard drive.
The default destination directory created for the program files is c:\Program_Files\TARGET1. If you want to install the program files in another location, select the Browse option to specify another directory.
4. When the installation is complete, examine your Start > Programs > Tektronix TARGET1 menu. It will contain four icons.
H Activate VirtualCE on NetTek enables Virtual CE on a connected
Tektronix NetTek Analyzer. Refer to page 3--1 for additional information about VirtualCE for the NetTek.
H ReadMe displays a text file containing tips, information not available at
the printing of this manual, and a list of additional files and programs that may be included on the TARGET1 CD-ROM.
H Target1 Help launches the TARGET1 help system. You can also launch
the help system from any of the TARGET1 menus.
H TARGET1 starts the application.
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Getting Started

After Installation

If You Need Help

Read the Readme file for operating tips, latest updates, and additional programs and files that are included on the TARGET1 CD-ROM.
To learn more about the Tektronix optical time-domain reflectometers (OTDR), refer to the appropriate user manual and read the online help for the product.
If you need further assistance with using the TARGET1 software or have special application problems, refer to Contacting Tektronix in the Preface section of this manual.
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TARGET1 Trace Analysis, Report Generation and Emulation Tool User Manual

Starting the TARGET1 Application

1. To start the installed TARGET1 application, choose Programs/Tektronix TARGET1/TARGET1 from the Start menu.
The application displays the startup dialog box shown in Figure 1--1.
Getting Started
Figure 1- 1: Application startup dialog box
2. Select the optical test application you want to use. See TARGET1 Applica- tion Packages on page 1--8 for more information about your choices.
3. Select the Start button to begin.
TARGET1 Trace Analysis, Report Generation and Emulation Tool User Manual
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Getting Started

TARGET1 Application Packages

TARGET1 application packages allow you to work with OTDR (optical time domain reflectometer) data.
OTDR Software Package
Modes
There are two modes provided by the OTDR software package:
H Trace Analysis mode. When you start the OTDR Trace Analysis Package,
you will be in Trace Analysis mode. You can also enter this mode by selecting the Go to Trace Analysis button. Use this mode to view individual files or pairs of files (bidirectional and difference pairs) and manipulate them in the same ways that you can with the OTDR. You cannot collect new data, but you can manually adjust events, perform tests, add landmarks, and add notes about the fiber or about events. See OTDR Trace Analysis Mode on page 2--1.
H Report Generation mode. Select the Go to Report Generator buttontoenter
this mode. Use this mode to view and manipulate data from multiple OTDR files at once. You can generate reports using a wizard that walks you through selecting the files, applying a template, doing additional tests, changing settings, setting limits, and formatting the information for printing. See OTDR Report Generator Mode on page 2--49.
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TARGET1 Trace Analysis, Report Generation and Emulation Tool User Manual
OTDR Software Package

OTDR Trace Analysis Mode

When you start the OTDR Trace Analysis Package, the program will be in Trace Analysis mode. You can also enter this mode by selecting the Go to Trace Analysis button.
In OTDR trace analysis mode, you can view, manipulate, and take measurements on saved OTDR trace data. Y ou can also add or remove events and landmarks from the trace data. You can review, edit, or add notes to the test files. The saved data can be either from local files or downloaded from the file systems of remote test equipment through a remote connection.
The trace area and the measurement table for events are empty until you open a file. See OpenaTraceFileon page 2--1.

Open a Trace File

Measurement data must be loaded into the application to start the display of a test file. Click File > Open...to display the Open dialog box shown in Figure 2--1. Use the Open dialog box to select and open a saved test file.
Choose the type of files to look for and the drive to look in as follows:
1. Select a file type from the Files of type: drop down menu:
H Standard Optical Record files (*.sor files)
H Common File Format files (*.cff files, a Tektronix OTDR format)
H Waveform files (*.wfm files, a Tektronix OTDR format)
H Event File (*.evt, a Tektronix OTDR format)
H Display all file types (*.*)
TARGET1 Trace Analysis, Report Generation and Emulation Tool User Manual
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OTDR Trace Analysis Mode
Figure 2- 1: Open file selection dialog box
2. Navigate to the folder you want by clicking in the Look in: box. The list shows the local drives on the PC and any networked drives connected to the
PC. Click the
If you can’t find the file you want, click the Search button to display the Search File(s) dialog box, which enables you to search your drive(s) for files that meet specific criteria. See page 2--19 for more information on searching.
3. Click a file name in the list to select that file. Its name will appear in the File Name box.
4. Select Preview File to view the fiber notes entered and saved with the trace
file. Use the fiber notes (if any are present) to help select a file of interest.
5. Select either A or B from the Open as: selections. This selection is especially important for dual-trace displays. The default selection is the A tab in single trace displays, but you can select either one and have a file loaded in either or both A and B. Any new file opened writes over a file already in the selected tab.
6. Click the Open button to load the file to the selected tab.
symbol to back up the directory tree.
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TARGET1 Trace Analysis, Report Generation and Emulation Tool User Manual

Functional Overview of Trace Analysis Mode

The features, functions, and interface controls for the NetTek Analyzer OTDRs are emulated by the T ARGET1 Trace Analysis, Report Generation and Emula­tion Tool (see Figure 2--2). The first four sections describe the different areas of the TARGET1 application:
H View Options (page 2--4)
H Trace Area (page 2--4)
H Event Table (page 2--9)
H Test Settings Panel (page 2--11)
H Control Panel (page 2--12)
H Menu Selection and Toolbar Button Descriptions (page 2--13)
The application displays views of the trace and event table, a test summary panel, and a control panel.
OTDR Trace Analysis Mode
Trace Area,
page 2--4
Event Table,
page 2--9
Test Settings
Panel,
page 2--11
Figure 2- 2: OTDR trace analysis display
Control Panel, page 2--12
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OTDR Trace Analysis Mode

View Options

You can select the following views using the View menu or the associated toolbar button:

Trace Area

H Maximize Trace.
and one line of data for the selected event in the Event Table.
H Split Trace and Event Table.
area and the Event Table.
H Event Table Only.
The trace area shows a graph of the acquired data points in the trace file. When a trace file is first opened, the initial trace is scaled to show the full trace of the acquisition.
The opening view depends on the View menu choice in effect when the application was last closed. Refer to View Options on page 2--4 for more information.
Figure 2--2 shows the Split Trace and Event Table view. The test settings panel is also shown.
There are two trace tabs: A and B. Use the tabs to switch between two open data files. The trace and the event table data change to show the information for the selected trace file.
This maximizes the trace area showing only the trace
This splits the display between the Trace
This displays only the Event Table.
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CAUTION. Make sure that you save changes to open data files before opening new files. If you open a file into a tab in which a data file is already opened, you will lose any unsaved changes in the open file.
To open two files into the TARGET1 application, select an empty tab in the Open dialog box. The Open dialog box default is the A trace tab.
TARGET1 Trace Analysis, Report Generation and Emulation Tool User Manual
OTDR Trace Analysis Mode
Changing Trace Display
Options
Select View > Trace Display Options... and then choose the options you want displayed:
H Choose Event Marking to display event markers ( ) at the bottom of the
trace area. Events are points in the acquisition at which measurement thresholds are exceeded and are sequentially numbered from left to right.
H Choose Delta Readouts to show the difference in position between cursors
A and B. The difference readout is always a positive number.
H Choose Grid to display gridlines in the trace area.
Cursors
There are two vertical or distance cursors used in the trace area: A and B. Use the cursors to select points of interest (events) in the trace for making measurements. Use the A and B cursor select buttons in the control panel to make a cursor active. The button for the active cursor is highlighted. The active cursor in the trace is shown horizontally centered in the Zoom box (see Zoom Box on page 2--7).
Selecting a Cursor. In the control panel (to the right of the trace area), click the button for the cursor you want to make active: A or B. The button for the active cursor is highlighted. You can activate the inactive cursor by clicking the button that is not highlighted.
Positioning the Cursors. There are several methods available for positioning a cursor in the trace:
H Move the active cursor in large increments using the << or >> buttons in the
control panel. This is the same as pressing the Ctrl-Left arrow or Crtl-Right arrow key on your keyboard.
H Move the active cursor in small increments using the < or > buttons in the
control panel. This is the same as using the Left arrow or Right arrow key on your keyboard.
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OTDR Trace Analysis Mode
H Move the active cursor using the previous (--) or next (+) buttons in the
control panel. Each click moves the active cursor to the previous or next event in the trace. The event number the cursor will move to is indicated in the push button box. The active cursor returns to the first event after passing the last event in the trace.
H Click an event number in the trace display to move the cursor to that event.
H Click and drag a cursor to any position of interest in the trace.
H With the mouse, point to a position in the trace that you want to move the
active cursor to, and then double click. The active cursor moves to that position in the trace.
H Select an event in the Event T able. The active cursor will move to that event.
Cursor Measurements. The cursor readouts in the OTDR emulation provide both the difference in distance from Cursor A to Cursor B and the distance from the beginning of the trace to the active cursor (either A or B) position. These values are shown just above the cursors and are updated as the cursors are moved within the trace area.
Event and Landmark
Markers
Figure 2--3 shows event markers (square numbered boxes) across the bottom of the trace indicating events that were found when the measurement was made or were added by the operator. Small house-shaped markers indicate landmarks that are added to the trace by the operator to record physical features.
Figure 2- 3: Event and landmark indicators on the OTDR trace
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TARGET1 Trace Analysis, Report Generation and Emulation Tool User Manual
OTDR Trace Analysis Mode
Zooming
Use the pink Zoom box to display a selected portion of the trace. The zoom box displayed in the full trace defines the area of the trace that will be shown in the expanded (zoomed) trace (see Figure 2--4). Grab one of the corners of the zoom box with the mouse and drag the size to set the trace expansion area around the active cursor.
Figure 2- 4: Trace with zoom box
In the control panel, click Zoom In to display the selected portion of the graph expanded in the trace area. The push button name changes to Zoom Out. Click Zoom Out to switch back to the full trace display.
The zoom box follows the active cursor. When zoomed in, use the cursor arrows on the control panel to adjust the portion of the expanded trace that is displayed in the zoomed trace. If you move the active cursor out of the expanded trace with the event selection buttons or make the inactive cursor active, the position of the zoom box is adjusted to again center the trace around the active cursor.
Use View > Join Cursors to bring the inactive cursor into the window when in zoom.
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OTDR Trace Analysis Mode
r
view
Press the Zoom In button to expand the trace to the size of the zoom box you defined. (The button label changes to Zoom Ou t when you are displaying a zoomed-in trace.)
You can also change the size of the expansion area by clicking the Zoom Size button to display the zoom size controls shown below.
While displaying a trace, use the left, right, up, and down arrows to adjust the size of the zoom box for the active cursor:
H Click the left arrow to make the zoom box narrower.
H Click the right arrow to make the zoom box wider.
H Click the up arrow to make the zoom box taller.
H Click the down arrow to make the zoom box shorter.
After you have set the zoom box size, press the Done button to exit the zoom size controls.
When you zoom in the display to expand a portion of the trace, a small graphic display, the Overview window, is shown at the top of the trace area (see Figure 2--5). This window indicates the location of the cursors in the trace and the relative horizontal size and location of the pink zoom box within the trace.
Ove
window
Figure 2- 5: Zoomed trace with overview window
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TARGET1 Trace Analysis, Report Generation and Emulation Tool User Manual
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