EXFO FTB-5240S User manual

User Guide
Optical Spectrum Analyzer for FTB-500
FTB-5240S/5240BP

ii FTB-5240S/5240BP
Copyright © 2009–2010 EXFO Inc. All rights reserved. No part of this
publication may be reproduced, stored in a retrieval system or transmitted
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as photocopying, recording or otherwise, without the prior written
permission of EXFO Inc. (EXFO).
Information provided by EXFO is believed to be accurate and reliable.
However, no responsibility is assumed by EXFO for its use nor for any
infringements of patents or other rights of third parties that may result from
its use. No license is granted by implication or otherwise under any patent
rights of EXFO.
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Atlantic Treaty Organization (NATO) is 0L8C3.
The information contained in this publication is subject to change without
notice.
Trademarks
EXFO’s trademarks have been identified as such. However, the presence
or absence of such identification does not affect the legal status of any
trademark.
Units of Measurement
Units of measurement in this publication conform to SI standards and
practices.
Patents
The Optical Spectrum Analyzer, including its proprietary measurement
software, is protected by US patent 6,636,306 (and equivalents in several
other countries), and pending PCT international application
PCT/CA2008/000647; EXFO’s Universal Interface is protected by US patent
6,612,750.
Version number 5.0.0

Contents
Optical Spectrum Analyzer iii
Contents
Certification Information ....................................................................................................... vi
1 Introducing the FTB-5240S/5240BP Optical Spectrum Analyzer ................ 1
Models ....................................................................................................................................2
Typical Applications ................................................................................................................3
Conventions ............................................................................................................................4
2 Safety Information ....................................................................................... 5
3 Getting Started with Your Optical Spectrum Analyzer .............................. 7
Inserting and Removing Test Modules ....................................................................................7
Starting the Optical Spectrum Analyzer Application .............................................................12
Exiting the Application .........................................................................................................14
4 Preparing Your Optical Spectrum Analyzer for a Test .............................. 15
Cleaning and Connecting Optical Fibers ...............................................................................15
Installing the EXFO Universal Interface (EUI) .........................................................................17
Selecting a Test Mode ...........................................................................................................18
Nulling Electrical Offsets .......................................................................................................21
Performing User Calibration ..................................................................................................23
5 Setting Up the Instrument in WDM Mode ................................................ 37
Defining Preferences .............................................................................................................39
Setting Up WDM Analysis Parameters ...................................................................................58
Setting Up Acquisition Parameters ........................................................................................99
6 Setting Up the Instrument in Drift Mode ............................................... 103
Defining Preferences ...........................................................................................................105
Setting Up Drift Analysis Parameters ..................................................................................123
Setting Up Acquisition Parameters ......................................................................................159
7 Setting Up the Instrument in DFB Mode ................................................ 165
Defining Preferences ...........................................................................................................166
Setting Up Acquisition Parameters ......................................................................................179
8 Setting Up the Instrument in Spectral Transmittance Mode ................ 183
Defining Preferences ...........................................................................................................184
Setting Up Spectral Transmittance Analysis Parameters ......................................................198
Setting Up Acquisition Parameters ......................................................................................205

Contents
iv FTB-5240S/5240BP
9 Setting Up the Instrument in EDFA Mode ...............................................209
Defining Preferences ...........................................................................................................210
Setting Up EDFA Analysis Parameters .................................................................................230
Setting Up Acquisition Parameters .....................................................................................265
10 Testing DWDM Systems ............................................................................269
Using the Discover Feature .................................................................................................269
Starting a Measurement .....................................................................................................273
11 Managing Results .....................................................................................277
Managing WDM Test Results ..............................................................................................278
Managing Drift Test Results ................................................................................................320
Managing DFB Test Results .................................................................................................340
Managing Spectral Transmittance Test Results ....................................................................350
Managing EDFA Test Results ...............................................................................................368
Using Zoom Controls ..........................................................................................................396
Managing Trace Files ..........................................................................................................398
Generating Reports .............................................................................................................410
12 Maintenance ..............................................................................................421
Cleaning EUI Connectors ....................................................................................................422
Recalibrating the Unit .........................................................................................................424
Recycling and Disposal (Applies to European Union Only) ..................................................425
13 Troubleshooting ........................................................................................427
Viewing Online Documentation ..........................................................................................427
Contacting the Technical Support Group ............................................................................427
About .................................................................................................................................428
Transportation ....................................................................................................................430
14 Warranty ....................................................................................................431
General Information ...........................................................................................................431
Liability ...............................................................................................................................432
Exclusions ...........................................................................................................................433
Certification ........................................................................................................................433
Service and Repairs .............................................................................................................434
EXFO Service Centers Worldwide ........................................................................................435

Contents
Optical Spectrum Analyzer v
A Technical Specifications ........................................................................... 437
B SCPI Command Reference ....................................................................... 439
Quick Reference Command Tree .........................................................................................440
Product-Specific Commands—Description ..........................................................................443
C Formulas Used with Your Optical Spectrum Analyzer ............................ 519
EDFA Noise Figure Calculation ............................................................................................519
Central Wavelength Calculation (Spectral Transmittance) ...................................................520
Bandwidth Calculation (Spectral Transmittance) .................................................................521
Index .............................................................................................................. 523

Certification Information
vi FTB-5240S/5240BP
Certification Information
F.C.C. Information
Electronic test equipment is exempt from Part 15 compliance (FCC) in
the United States. However, compliance verification tests are
systematically performed on most EXFO equipment.
 Information
Electronic test equipment is subject to the EMC Directive in the European
Union. The EN61326 standard prescribes both emission and immunity
requirements for laboratory, measurement, and control equipment.
This unit has undergone extensive testing according to the European Union
Directive and Standards.

Certification Information
Optical Spectrum Analyzer vii
Application of Council Directive(s): 2006/95/EC - The Low Voltage Directive
2004/108/EC - The EMC Directive
93/68/EEC - CE Marking
And their amendments
Manufacturer’s Name: EXFO Electro-Optical Engineering Inc.
Manufacturer’s Address: 400 Godin Avenue
Quebec, Quebec
Canada, G1M 2K2
[phone]
Equipment Type/Environment: Test & Measurement / Industrial
Trade Name/Model No.: FTB-5230/5240/5240B/5240BP/5240S
Optical Spectrum Analyzer
Standard(s) to which Conformity is Declared:
EN 61010-1:2001 Edition 2.0 Safety Requirements for Electrical Equipment for Measurement,
Control, and Laboratory Use – Part 1: General Requirements.
EN 61326-1:2006 Electrical Equipment for Measurement, Control and Laboratory
Use - EMC Requirements
EN 60825-1:2007 Edition 2.0 Safety of laser products – Part 1: Equipment classification and
requirements
EN 55022: 2006 + A1: 2007 Information technology equipment — Radio disturbance
characteristics — Limits and methods of measurement
I, the undersigned, hereby declare that the equipment specified above conforms to the above Directive and Standards.
Manufacturer
Signature:
Full Name: Stephen Bull, E. Eng
Position: Vice-President Research and
Development
Address: 400 Godin Avenue, Quebec (Quebec),
Canada, G1M 2K2
Date: January 09, 2009
DECLARATION OF CONFORMITY

Optical Spectrum Analyzer 1
1 Introducing the
FTB-5240S/5240BP Optical
Spectrum Analyzer
The FTB-5240S/5240BP Optical Spectrum Analyzer (OSA) is designed to
measure optical power as a function of wavelength or frequency and
Optical Signal to Noise Ratio (OSNR).
Your Optical Spectrum Analyzer offers truly portable spectral
characterization for DWDM network commissioning as well as In-Band
Optical Signal to Noise Ratio (OSNR) measurement for ROADM and
40 Gbit/s signals and networks.
The FTB-5240S is an expert DWDM OSA that is designed for efficient
commissioning, maintenance and trouble-shooting of DWDM components
and links in the field, from 50 GHz to CWDM network.
The FTB-5240BP is a high-resolution OSA designed for accurate and
precise spectral measurements, even for channels with 12.5 GHz spacing.
Input port
Handle

Introducing the FTB-5240S/5240BP Optical Spectrum Analyzer
2FTB-5240S/5240BP
Models
Models
The Optical Spectrum Analyzer comes in different models:
³FTB-5240S: The FTB-5240S is a small form factor expert OSA (two-slot
unit). It offers new modulation schemes, such as non-return-to-zero
(NRZ), duo binary, differential phase-shift keying (DPSK), quadrature
phase shift keying (QPSK), which present large line widths and often
display multiple peaks. In-depth analysis ensures the correct
identification and signal measurement of each carrier.
³FTB-5240S-P: It is the FTB-5240S model with a polarization controller. It
is a hardware-ready version of an expert OSA (two-slot unit), without
the software to compute the In-Band OSNR. You can upgrade this
model on field using the software key, and it will become fully capable
of In-Band OSNR measurement.
³FTB-5240S-P-InB: It is the FTB-5240 S-P model (two-slot unit) with the
addition of an automated and integrated polarization controller. It is
possible to change the state of polarization (SOP) at the input of the
OSA and take advantage of a polarization diverse design to determine
the OSNR in the band of a DWDM channel. This is required when noise
is not flat under adjacent peaks or when crosstalk is dominant.
³FTB-5240BP: It is a three-slot model with a polarization controller for
automated In-band testing and better optical performance.
³High Power Model (HPW): This model allows you to connect the
FTB-5240S or FTB-5240S-P OSA to a network that carries very high
optical power. This situation becomes more common with the
deployment of latest CATV networks. The sensitivity of this OSA model
is shifted accordingly and the module is protected to work under these
extended power levels.

Introducing the FTB-5240S/5240BP Optical Spectrum Analyzer
Optical Spectrum Analyzer 3
Typical Applications
Typical Applications
You can use your Optical Spectrum Analyzer for the following tasks:
³Characterizing channels in the O- to U-band spectra
³Testing laser sources for spectral purity and power distribution
³Testing the transmission characteristics of optical devices
³Troubleshooting and monitoring key parameters on CWDM or DWDM
signals to check system stability
³Characterizing all channel spacings, from 50 GHz DWDM to CWDM
(from 12.5 GHz for FTB-5240BP)
³Testing high-speed networks (40 Gbit/s and higher)
³Measuring OSNR, but specifically within the channel (In-Band OSNR)
for FTB-5240S-P-InB and FTB-5240BP models

Introducing the FTB-5240S/5240BP Optical Spectrum Analyzer
4FTB-5240S/5240BP
Conventions
Conventions
Before using the product described in this manual, you should understand
the following conventions:
WARNING
Indicates a potentially hazardous situation which, if not avoided,
could result in death or serious injury. Do not proceed unless you
understand and meet the required conditions.
CAUTION
Indicates a potentially hazardous situation which, if not avoided,
may result in minor or moderate injury. Do not proceed unless you
understand and meet the required conditions.
CAUTION
Indicates a potentially hazardous situation which, if not avoided,
may result in component damage. Do not proceed unless you
understand and meet the required conditions.
IMPORTANT
Refers to information about this product you should not overlook.

Optical Spectrum Analyzer 5
2 Safety Information
Your instrument is a Class 1 laser product in compliance with standards
IEC 60825-1:2007 and 21 CFR 1040.10. Laser radiation may be encountered
at the output port.
The following label indicates that a product contains a Class 1 source:
Note: Label shown for information purposes only. It is not affixed to your product.
WARNING
Do not install or terminate fibers while a light source is active.
Never look directly into a live fiber and ensure that your eyes are
protected at all times.
WARNING
Use of controls, adjustments and procedures for operation and
maintenance other than those specified herein may result in
hazardous radiation exposure or impair the protection provided by
this unit.
CLASS 1
LASER PRODUCT

Optical Spectrum Analyzer 7
3 Getting Started with Your
Optical Spectrum Analyzer
Inserting and Removing Test Modules
To insert a module into the FTB-500:
1. Exit ToolBox and turn off your unit.
2. Position the FTB-500 so that its right panel is facing you.
CAUTION
Never insert or remove a module while the FTB-500 is turned on.
This will result in immediate and irreparable damage to both the
module and unit.
WARNING
When the laser safety LED ( ) is flashing on the FTB-500, at least
one of your modules is emitting an optical signal. Please check all
modules, as it might not be the one you are currently using.

Getting Started with Your Optical Spectrum Analyzer
8FTB-5240S/5240BP
Inserting and Removing Test Modules
3. Take the module and place it so that the connector pins are at the
back, as explained and shown below.
Identification sticker must be facing up and connector pins at the right
of the retaining screw hole.
4. Insert the protruding edges of the module into the grooves of the
receptacle’s module slot.
5. Push the module all the way to the back of the slot, until the retaining
screw makes contact with the receptacle casing.
6. Place the FTB-500 so that its left panel is facing you.
Protruding edges
at bottom
Identification sticker
facing up
Connector
pins at the
back
Retaining screw
hole at the
back
FTB-500 right panel

Getting Started with Your Optical Spectrum Analyzer
Optical Spectrum Analyzer 9
Inserting and Removing Test Modules
7. While applying slight pressure to the module, turn the retaining screw
clockwise until it is tightened.
This will secure the module into its “seated” position.
When you turn on the unit, the startup sequence will automatically detect
the module.
Turn retaining screw knob
clockwise
FTB-500 left panel

Getting Started with Your Optical Spectrum Analyzer
10 FTB-5240S/5240BP
Inserting and Removing Test Modules
To remove a module from the FTB-500:
1. Exit ToolBox and turn off your unit.
2. Position the FTB-500 so that the left panel is facing you.
3. Turn the retaining screw counterclockwise until it stops.
The module will be slowly released from the slot.
4. Place the FTB-500 so that the right panel is facing you.
Turn retaining screw knob(s)
counterclockwise
FTB-500 left panel

Getting Started with Your Optical Spectrum Analyzer
Optical Spectrum Analyzer 11
Inserting and Removing Test Modules
5. Hold the module by its sides or by the handle (NOT by the connector)
and pull it out.

Getting Started with Your Optical Spectrum Analyzer
12 FTB-5240S/5240BP
Starting the Optical Spectrum Analyzer Application
Starting the Optical Spectrum Analyzer
Application
Your FTB-5240S/5240BP Optical Spectrum Analyzer module can be
configured and controlled from its dedicated ToolBox application.
Note: For details about ToolBox, refer to the FTB-500 user guide.
To start the application:
1. From the main window, select the module to use.
It will turn blue to indicate that it is highlighted.
2. Click the corresponding button in the Module Applications box.