EXFO IQS-1600 User Manual
IQS-1600
High Speed Power Meter for IQS Platforms
User Guide
Copyright © 2002–2008 EXFO Electro-Optical Engineering Inc. All rights
reserved. No part of this publication may be reproduced, stored in a
retrieval system or transmitted in any form, be it electronically,
mechanically, or by any other means such as photocopying, recording or
otherwise, without the prior written permission of EXFO Electro-Optical
Engineering 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.
EXFO’s Commerce And Government Entities (CAGE) code under the North
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.
Version number:
ii IQS-1600
2.0.2
Contents
Contents
Certification Information ....................................................................................................... vi
1 Introducing the IQS-1600 High Speed Power Meter .................................. 1
Main Features .........................................................................................................................1
Typical Applications ................................................................................................................4
Conventions ............................................................................................................................5
2 Safety Information ....................................................................................... 7
3 Getting Started with Your High Speed Power Meter ................................. 9
Inserting and Removing Test Modules ....................................................................................9
Starting the High Speed Power Meter Application ................................................................14
Entering Values Using Sliders and Numeric Boxes .................................................................17
Exiting the Application .........................................................................................................18
4 Setting Up Your High Speed Power Meter ................................................ 19
Setting Channel Display(IQS-1620, IQS-1640) .......................................................................20
Selecting the Wavelength .....................................................................................................26
Managing Wavelength Lists ..................................................................................................27
Selecting the Measurement Unit ...........................................................................................28
Setting the Display Resolution ..............................................................................................29
Setting the Refresh Rate .......................................................................................................31
Setting the Measurement Range ..........................................................................................32
Saving and Recalling Configurations .....................................................................................35
5 Preparing Your High Speed Power Meter for a Test ................................. 37
Cleaning and Connecting Optical Fibers ...............................................................................37
Nulling Offsets ......................................................................................................................38
6 Measuring Power ....................................................................................... 41
Displaying Absolute Power ...................................................................................................41
Measuring Relative Power .....................................................................................................43
Selecting the Reference Value ...............................................................................................44
Editing the Reference List .....................................................................................................45
Measuring Corrected Power ..................................................................................................46
Using the Offset Function .....................................................................................................48
Averaging Measurements ....................................................................................................49
7 Recording Power Signal Variations ........................................................... 51
High Speed Power Meter iii
Contents
8 Performing Acquisitions .............................................................................55
Selecting the Sampling Type .................................................................................................56
Selecting the Acquisition Mode ............................................................................................59
Starting the Acquisition ........................................................................................................66
Consulting Acquired Data .....................................................................................................68
9 Performing and Analyzing Graph Acquisitions .........................................73
Setting Up Graph Parameters ...............................................................................................73
Printing Graph Results ..........................................................................................................76
Clearing Graph Display .........................................................................................................76
Using the Zoom Function .....................................................................................................77
Displaying and Moving Markers ...........................................................................................79
10 Using the External Trigger and Analog Outputs .......................................81
External Trigger .....................................................................................................................82
Analog Output (IQS-1610, IQS-1620) ...................................................................................83
11 Monitoring Power Meter Modules ............................................................87
Using Monitor Windows .......................................................................................................87
Using QuickTools ...................................................................................................................90
12 Typical Applications ....................................................................................93
Performing Absolute Power Measurements ..........................................................................94
Measuring Insertion Loss ......................................................................................................96
Testing Instrument Linearity ..................................................................................................98
Characterizing an Optical Switch ........................................................................................100
13 Maintenance ..............................................................................................103
Cleaning Fixed Connectors ..................................................................................................104
Cleaning Detector Ports ......................................................................................................106
Cleaning the Analog Output and External Trigger Ports ......................................................107
Recalibrating the Unit .........................................................................................................107
Recycling and Disposal (Applies to European Union Only) ..................................................108
14 Troubleshooting ........................................................................................109
Solving Common Problems .................................................................................................109
Viewing Online Documentation ..........................................................................................111
Finding Information on the EXFO Web Site ........................................................................112
Contacting the Technical Support Group ............................................................................113
Transportation ....................................................................................................................114
iv IQS-1600
Contents
15 Warranty ................................................................................................... 115
General Information ...........................................................................................................115
Liability ...............................................................................................................................115
Exclusions ...........................................................................................................................116
Certification ........................................................................................................................116
Service and Repairs .............................................................................................................117
EXFO Service Centers Worldwide ........................................................................................118
A Technical Specifications ........................................................................... 119
B SCPI Command Reference ....................................................................... 121
Quick Reference Command Tree .........................................................................................122
Product-Specific Commands—Description ..........................................................................126
Index .............................................................................................................. 225
High Speed Power Meter v
Certification Information
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.
Use of shielded remote I/O cables, with properly grounded shields
and metal connectors, is recommended in order to reduce radio
frequency interference that may emanate from these cables.
IMPORTANT
vi IQS-1600
Certification Information
Application of Council Directive(s): 73/23/EEC - The Low Voltage Directive
Manufacturer’s Name: EXFO Electro-Optical Engineering Inc.
Manufacturer’s Address: 400 Godin Avenue
Equipment Type/Environment: Test & Measurement / Industrial
Trade Name/Model No.: IQS-1600
Standard(s) to which Conformity is Declared:
EN 61010-1:2001 Safety Requirements for Electrical Equipment for Measurement, Control,
EN 55022: 1998 +A2: 2003 Limits and Methods of Measurement of Radio Disturbance
EN 61326:1997 +A1:1998
+A2:2001 + A3:2003
I, the undersigned, hereby declare that the equipment specified above conforms to the above Directive and Standards.
and Laboratory Use, Part 1: General Requirements.
Characteristics of Information Technology Equipment.
Electrical Equipment for Measurement, Control and Laboratory
Use - EMC Requirements
DECLARATION OF CONFORMITY
89/336/EEC - The EMC Directive
And their amendments
Quebec, Quebec
Canada G1M 2K2
(418) 683-0211
High-Speed Power Meter
Manufacturer
Signature:
Full Name: Stephen Bull, E. Eng
Position: Vice-President Research and
Address:
Date: January 7, 2002
Development
400 Godin Avenue, Quebec (Quebec),
Canada, G1M 2K2
High Speed Power Meter vii
1 Introducing the IQS-1600 High
Speed Power Meter
Designed for the IQS platforms, the IQS-1600 High Speed Power Meter is a
module available in three different models. It is used with the OHS-1700
Optical Head.
Main Features
The IQS-1600 High Speed Power Meter is offered in different
configurations:
³ Standard option—IQS-1600 Series
³ Low-PDL option—IQS-1600-PL Series
³ Wide-Area Detector (3 mm) option—IQS-1600W Series
All configurations come in the single-, dual- or quadruple-connector
models.
High Speed Power Meter 1
Introducing the IQS-1600 High Speed Power Meter
Main Features
IQS-1610 IQS-1620 IQS-1640
Analog
output
port
ANALOG OUT
EXT.
TRIG
IQS-1600
Power Meter
ANALOG OUT
C1
C2
IQS-1600
2-Ch Power Meter
EXT.
TRIG
C1
C2
C3
C4
IQS-1600
4-Ch Power Meter
C
F
-
T
T
N
E
X
F
O
adapter
Optical
detector port
External trigger
Fiber-optic
port (SMB
Sync
connector)
Out
Sync In
Trig
Retaining
screw knob
LED push
button
External trigger port
(SMB connector)
External connector (used only
with the IQS-12004B system)
It features a high sampling rate and fast stabilization, and comes in one-,
two- or four-channel options (each detector is independent). It also
provides you with power level and TTL voltage synchronization triggers.
The synchronization triggers will operate simultaneously on dual- and
quadruple-channel models.
The graphical display mode shows all channels on a real-time graph,
which you can analyze afterwards.
The IQS-1600 High Speed Power Meter supports local control (via the
IQS Manager software) and remote control (through GPIB, RS-232, or
Ethernet TCP/IP using SCPI commands or the provided LabVIEW drivers).
For more information, refer to the IQS platform user guide.
2 IQS-1600
Introducing the IQS-1600 High Speed Power Meter
Main Features
Moreover, a special model was designed for the IQS-12004B DWDM
Passive Component Test System The IQS-1643T-PL-SN presents
specifications that are very close to the IQS-1643-PL-SN standalone
module.
Every customer purchasing the IQS-12004B system for applications
covering both the C- and L-bands will receive an IQS-1643T-PL-SN. Even
though the power meter has been modified to work in the IQS-12004B
system, it can still be used as a standalone unit using an IQS-500 Intelligent
Test System.
Both the facia of the module and the title bar in the software reflect
whether you are using an IQS-1643T-PL-SN or a standard IQS-1643-PL-SN.
Note: The instrument is only guaranteed within the IQS-12004B operating
temperature range of 23
o
C ±3 oC. Any other functionality or specification,
particularly those concerning the accuracy and linearity of the instrument,
will not be affected by the design change to the IQS-1600T-PL-SN.
High Speed Power Meter 3
Introducing the IQS-1600 High Speed Power Meter
Typic a l A pp l icatio n s
Typical Applications
Your power meter is suitable for numerous applications, including the
following:
³ Insertion loss of passive components in the production environment
³ Component and system monitoring
³ Source stability characterization
³ Absolute power measurements
³ Manual or automated splice loss measurement
³ Characterization of MUX/DEMUX, used in conjuction with a tunable
laser source, or within the IQS-12004B DWDM Passive Component Test
System
³ Optical switch characterization (switching time, insertion loss)
³ Measurement on bare or unconnectorized fibers
4 IQS-1600
Introducing the IQS-1600 High Speed Power Meter
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.
High Speed Power Meter 5
2 Safety Information
Your power meter does not contain laser components in itself. However,
you will be using it with light sources.
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.
High Speed Power Meter 7
3 Getting Started with Your
High Speed Power Meter
This chapter contains information on how to insert and remove test
modules. You will also find how to connect your optical head to your
power meter and how to start and exit the application.
Inserting and Removing Test Modules
CAUTION
Never insert or remove a module while the controller unit and its
expansion units are turned on. This will result in immediate and
irreparable damage to both the module and unit.
To insert a module into the controller or expansion unit:
1. Exit IQS Manager and turn off all your units.
2. Remove the protective cover from the desired unused module slot.
2a. Pull the retaining screw knob firmly towards you and release the
bottom of the cover.
2b. Gently pull the top of the protective cover downwards, to remove
it from the unit grooves.
2b
Protective cover
Retaining screw
knob
2a
High Speed Power Meter 9
Getting Started with Your High Speed Power Meter
Inserting and Removing Test Modules
3. Position the module so that its front panel is facing you and the top and
bottom protruding edges are to your right.
4. Insert the protruding edges of the module into the grooves of the unit’s
module slot.
Protruding edges
(right side of module)
5
Retaining screw knob
Retaining screw
5. Push the module all the way to the back of the slot, until the retaining
screw makes contact with the unit casing.
6. While applying slight pressure to the module, turn the retaining screw
knob (located at the bottom of the panel) clockwise until the knob is
horizontal.
This will secure the module into its “seated” position.
10 IQS-1600
Getting Started with Your High Speed Power Meter
Inserting and Removing Test Modules
6
The module is correctly inserted when its front panel is flush with the front
panel of the controller or expansion unit.
When you turn on the controller unit, the startup sequence will
automatically detect your module.
Note: You can insert IQ modules into your controller or expansion unit; the
IQS Manager software will recognize them. However, the IQS-1600 locking
mechanism (retaining screw) will not work for IQ modules.
To remove a module from your controller or expansion unit:
1. While pulling gently on the knob, turn it counterclockwise until it stops.
The module will slowly be released from the slot.
Retaining screw knob
High Speed Power Meter 11
Getting Started with Your High Speed Power Meter
Inserting and Removing Test Modules
2. Place your fingers underneath the module or hold it by the retaining
screw knob (NOT by the connector) and pull it out.
Connector
NO
YES
Retaining screw
knob
CAUTION
Pulling out a module by a connector could seriously damage both
the module and connector. Always pull out a module by the
retaining screw knob.
3. Cover empty slots with the supplied protective covers.
3a. Slide the top of the protective cover into the upper grooves of the
unit.
3b. Snap the cover into place by pushing the retaining screw knob.
12 IQS-1600
Getting Started with Your High Speed Power Meter
Inserting and Removing Test Modules
CAUTION
Failure to reinstall protective covers over empty slots will result in
ventilation problems.
High Speed Power Meter 13
Getting Started with Your High Speed Power Meter
Starting the High Speed Power Meter Application
Starting the High Speed Power Meter
Application
Your IQS-1600 High Speed Power Meter module can be configured and
controlled from its dedicated IQS Manager application.
Note: For details about IQS Manager, refer to the IQS platform user guide.
To start the application:
1. From the Current Modules function tab select the module to use.
It will turn white to indicate that it is highlighted.
2. Click Start Application.
OR
Press the green LED push button on the front of the corresponding
module.
You can also double-click its row.
Note: Pressing the LED push button will not activate or turn on the module.
Note: To start the corresponding monitor window at the same time, click Start
App. & Monitor. The window opens on the Monitors function tab.
The main window (shown below) contains all the commands required to
control the High Speed Power Meter:
14 IQS-1600
Data
display
Parameter
definition
controls
Getting Started with Your High Speed Power Meter
Starting the High Speed Power Meter Application
Title bar
Function
buttons
Status bar
High Speed Power Meter 15
Getting Started with Your High Speed Power Meter
Starting the High Speed Power Meter Application
Title Bar
The title bar is located at the top of the main window. It displays the
module name and its position in the controller or expansion unit. The
module position is identified as follows:
Controller unit or expansion unit (1 to 999) housing
the module
Slot number in which module is inserted
(0 identifies first slot)
[ 999 – 1 ]
Status Bar
The status bar, located at the bottom of the main window, identifies the
operational status of the IQS-1600 High Speed Power Meter.
Control mode
Local: Module controlled locally only.
Remote: Module controlled remotely, but
local commands can also be used.
Lockout: Module controlled remotely only.
Current date and timeModule/unit status
For more information about automating or remotely controlling the
IQS-1600 High Speed Power Meter, refer to your platform user guide.
16 IQS-1600
Getting Started with Your High Speed Power Meter
Entering Values Using Sliders and Numeric Boxes
Entering Values Using Sliders and Numeric
Boxes
Many parameters in IQS Manager and module applications can be set
using the following tools.
Slider
Fine-tuning
box
Navigation buttons
³ Slider: Drag it to the desired value on the scale below.
³ Navigation buttons: Click either buttons to move the slider. The slider
moves by steps corresponding to the number in the fine-tuning box,
which you can change by using the up and down arrow buttons next to
the box. You cannot change the list of fine-tuning values from here.
³ Numeric box: Click it to display the on-screen numeric pad, which you
can use to enter a powe value.
Numeric box
button
To enter a value using the numeric box:
1. Use the button to clear the entry display.
Parameter identification
Entry display
Clear button
Toggle button
Backspace button
(to correct a value)
2. Enter the value.
3. Click OK to confirm the value.
High Speed Power Meter 17
Getting Started with Your High Speed Power Meter
Exiting the Application
Exiting the Application
Closing any application that is not currently being used is a good way to
free system memory.
To close the application from the main window:
Click in the top right corner of the main window.
OR
Click the Exit button located at the bottom of the function bar.
To close all currently running applications:
From IQS Manager, click Close All Applications.
18 IQS-1600
4 Setting Up Your High Speed
Power Meter
You can set the following paameters on your IQS-1600:
³ Chanel display
³ Wavelength selection and management
³ Measurement unit selection
³ Display resolution
³ Refresh rate
³ Measurement range
³ Saving and recalling configuration
High Speed Power Meter 19
Setting Up Your High Speed Power Meter
Setting Channel Display(IQS-1620, IQS-1640)
Setting Channel Display(IQS-1620, IQS-1640)
The channel display allows you to select which channels you want to view
when using a multichannel power meter. You can display up to three
optical channels using a dual-channel power meter (the two normal
channels, plus the virtual channel) and up to four optical channels using a
four-channel power meter. These channels may include one or two virtual
channels respectively.
To set the channel displayon IQS-1620 or IQS-1640 models:
1. From the Instrument function tab, click the Display tab to view the
available channels.
2. Select the desired channel.
The data display immediately reflects your selection and the selected
channel indicator will turn light green.
20 IQS-1600
Setting Up Your High Speed Power Meter
Setting Channel Display(IQS-1620, IQS-1640)
Selecting a Channel (IQS-1620, IQS-1640)
The IQS-1620 and IQS-1640 have two and four independent optical
channels respectively.
To select an optical channel:
From the Instrument function tab, go to Channel and use the arrow
buttons next to the channel number to change it.
OR
Click the appropriate data display zone.
A colored frame will indicate your selection.
High Speed Power Meter 21
Setting Up Your High Speed Power Meter
Setting Channel Display(IQS-1620, IQS-1640)
Selecting a Virtual Channel (IQS-1620, IQS-1640)
In addition to the optical channels, your application offers one virtual
channel for the dual-channel power meter and two virtual channels for the
quadruple-channel power meter.
A virtual channel is a combination (sum or difference when using dB or
dBm as units, product or ratio when using watts or watts/watts as units—
see the table on page 24) of the measured power from any two optical
channels. This feature provides an extremely flexible comparative
measurement display. A virtual channel is used and controlled in the same
way as an optical channel.
The virtual channel is an excellent tool for comparing two optical channels.
For example, if two devices (connected to channels 1 and 2) are supposed
to have identical power levels, displaying a virtual channel (defined as
channel 1 minus channel 2) provides quick monitoring of both devices and
indicates any power fluctuations. You may also want to reference the drift
of a source in real time by cancelling it out in a virtual channel.
22 IQS-1600
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