Agilent 83437A User`s Manual

Agilent 83437A User`s Manual
Agilent 83437A
Broadband Light Source
User’s Guide
© Copyright 2000
Agilent Technologies
All Rights Reserved. Reproduction, adaptation, or translation without prior written
permission is prohibited,
except as allowed under copyright laws.
Agilent Part No. 83437-90010
Printed in USA
February 2000
Agilent Technologies
Lightwave Division
1400 Fountaingrove Parkway
Santa Rosa, CA 95403-1799,
USA
(707) 577-1400
Notice.
The information contained in
this document is subject to
change without notice. Companies, names, and data used
in examples herein are fictitious unless otherwise noted.
Agilent Technologies makes
no warranty of any kind with
regard to this material, including but not limited to, the
implied warranties of merchantability and fitness 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.
Restricted Rights Legend.
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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
for DOD agencies, and subparagraphs (c) (1) and (c) (2)
of the Commercial Computer
Software Restricted Rights
clause at FAR 52.227-19 for
other agencies.
Warranty.
This Agilent Technologies
instrument product is warranted against defects in
material and workmanship for
a period of one year from date
of shipment. During the warranty period, Agilent Technologies will, at its option, either
repair or replace products
which prove to be defective.
For warranty service or repair,
this product must be returned
to a service facility designated by Agilent Technologies. Buyer shall prepay
shipping charges to Agilent
Technologies and Agilent
Technologies shall pay shipping charges to return the
product to Buyer. However,
Buyer shall pay all shipping
charges, duties, and taxes for
products returned to Agilent
Technologies from another
country.
Agilent Technologies warrants that its software and
firmware designated by Agilent Technologies for use with
an instrument will execute its
programming instructions
when properly installed on
that instrument. Agilent Technologies does not warrant that
the operation of the instrument, or software, or firmware
will be uninterrupted or errorfree.
Limitation of Warranty.
The foregoing warranty shall
not apply to defects resulting
from improper or inadequate
maintenance by Buyer, Buyersupplied software or interfacing, unauthorized modification or misuse, operation
outside of the environmental
specifications for the product,
or improper site preparation
or maintenance.
No other warranty is
expressed or implied. Agilent
Technologies specifically disclaims the implied warranties
of merchantability and fitness
for a particular purpose.
Exclusive Remedies.
The remedies provided herein
are buyer's sole and exclusive
remedies. Agilent Technolo-
ii
❍ The OFF symbols
are used to mark the
positions of the instrument power line
switch.
gies shall not be liable for any
direct, indirect, special, incidental, or consequential damages, whether based on
contract, tort, or any other
legal theory.
The CE mark is a registered trademark of
the European Community.
Safety Symbols.
CAUTION
The caution sign denotes a
hazard. It calls attention to a
procedure which, if not correctly performed or adhered
to, could result in damage to
or destruction of the product.
Do not proceed beyond a caution sign until the indicated
conditions are fully understood and met.
The CSA mark is a registered trademark of
the Canadian Standards Association.
The C-Tick mark is a
registered trademark
of the Australian Spectrum Management
Agency.
WARNING
The warning sign denotes a
hazard. It calls attention to a
procedure which, if not correctly performed or adhered
to, could result in injury or
loss of life. Do not proceed
beyond a warning sign until
the indicated conditions are
fully understood and met.
The instruction manual symbol. The product is marked with this
warning symbol when
it is necessary for the
user to refer to the
instructions in the
manual.
The laser radiation
symbol. This warning
symbol is marked on
products which have a
laser output.
The AC symbol is used
to indicate the
required nature of the
line module input
power.
| The ON symbols are
used to mark the positions of the instrument
power line switch.
ISM1-A
This text denotes the
instrument is an
Industrial Scientific
and Medical Group 1
Class A product.
Typographical Conventions.
The following conventions are
used in this book:
Key type for keys or text
located on the keyboard or
instrument.
Softkey type for key names that
are displayed on the instrument’s screen.
Display type for words or
characters displayed on the
computer’s screen or instrument’s display.
User type for words or charac-
ters that you type or enter.
Emphasis type for words or
characters that emphasize
some point or that are used as
place holders for text that you
type.
The Agilent 83437A—At a Glance
The Agilent 83437A—At a Glance
The Agilent 83437A Broadband Light Source provides incoherent light for
characterizing fiber-optic components. Because its single-mode output originates from edge emitting LEDs (EELEDs), the power density of the output
spectrum is considerably greater than that of surface emitting LEDs or whitelight tungsten lamp sources.
Several output wavelengths are available
Although the standard Agilent 83437A’s output is 1500 nm, your instrument
may include additional options which provide a maximum light spread of over
500 nm. Up to four internal EELED sources can be installed when selected
from the following options:
•
•
•
•
•
Option 002: 1200 nm source
Option 003: 1310 nm source
Option 004: 1430 nm source
Option 005: 1500 nm source deleted
Option 006: 1650 nm source
Even if your instrument has several wavelength options, all the light is coupled
so that it emerges from one output connector.
Each EELED can be modulated or turned off
You can digitally modulate the output of each individual source using a TTL
compatible signal. For a complete discussion of modulating the output light
and making measurements with your Agilent 83437A, refer to Chapter 2,
“Making Measurements”.
iii
The Agilent 83437A—At a Glance
Measurement accuracy—it’s up to you!
Fiber-optic connectors are easily damaged when connected to dirty or damaged cables
and accessories. The Agilent 83437A’s front-panel OPTICAL OUT connector is no exception. When you use improper cleaning and handling techniques, you risk expensive
instrument repairs, damaged cables, and compromised measurements.
Before you connect any fiber-optic cable to the Agilent 83437A, refer to “Cleaning Connections for Accurate Measurements” on page 2-11.
Laser classification
The Agilent 83437A is classified as an IEC LED Class 1 product. The total power of light
energy radiated out of the OPTICAL OUT connector is less than –5 dBm. Operator maintenance or precautions are not necessary to maintain safety. No controls, adjustments,
or performance of procedures result in hazardous radiation exposure.
iv
The Agilent 83437A—At a Glance
Rear view of instrument
v
General Safety Considerations
General Safety Considerations
This product has been designed and tested in accordance with IEC Publication 61010-1, Safety Requirements for Electrical Equipment for Measurement,
Control and Laboratory Use, and has been supplied in a safe condition. The
instruction documentation contains information and warnings that must be
followed by the user to ensure safe operation and to maintain the product in a
safe condition.
WARNING
If this instrument is not used as specified, the protection provided by
the equipment could be impaired. This instrument must be used in a
normal condition (in which all means for protection are intact) only.
WARNING
To prevent electrical shock, disconnect the Agilent 83437A from
mains before cleaning. Use a dry cloth or one slightly dampened with
water to clean the external case parts. Do not attempt to clean
internally.
WARNING
This is a Safety Class 1 product (provided with a protective earthing
ground incorporated in the power cord). The mains plug shall only be
inserted in a socket outlet provided with a protective earth contact.
Any interruption of the protective conductor inside or outside of the
product is likely to make the product dangerous. Intentional
interruption is prohibited.
WARNING
No operator serviceable parts inside. Refer servicing to qualified
personnel. To prevent electrical shock, do not remove covers.
WARNING
For continued protection against fire hazard, replace line fuse only
with same type and ratings, (type T 0.315A/250V for 100/120V
operation and 0.16A/250V for 220/240V operation). The use of other
fuses or materials is prohibited. Verify that the value of the linevoltage fuse is correct.
• For 100/120V operation, use an IEC 127 5×20 mm, 0.315 A, 250 V, Agilent
part number 2110-0449.
• For 220/240V operation, use an IEC 127 5×20 mm, 0.16 A, 250 V, Agilent
Technologies part number 2110-0448.
vi
General Safety Considerations
CAUTION
Before switching on this instrument, make sure that the line voltage selector
switch is set to the line voltage of the power supply and the correct fuse is
installed. Assure the supply voltage is in the specified range.
CAUTION
This product is designed for use in Installation Category II and Pollution
Degree 2 per IEC 1010 and 664 respectively.
CAUTION
VENTILATION REQUIREMENTS: When installing the product in a cabinet, the
convection into and out of the product must not be restricted. The ambient
temperature (outside the cabinet) must be less than the maximum operating
temperature of the product by 4°C for every 100 watts dissipated in the
cabinet. If the total power dissipated in the cabinet is greater than 800 watts,
then forced convection must be used.
CAUTION
Always use the three-prong ac power cord supplied with this instrument.
Failure to ensure adequate earth grounding by not using this cord may cause
instrument damage.
CAUTION
Do not connect ac power until you have verified the line voltage is correct as
described in “Line Power Requirements” on page 1-7. Damage to the
equipment could result.
CAUTION
This instrument has autoranging line voltage input. Be sure the supply voltage
is within the specified range.
vii
Contents
The Agilent 83437A—At a Glance iii
1 Getting Started
Step 1. Inspect the Shipment 1-4
Step 2. Check the Fuse 1-6
Step 3. Connect the Line-Power Cable 1-7
Step 4. Turn on the Agilent 83437A 1-9
Returning the Instrument for Service 1-10
2 Making Measurements
Modulating the Output Light 2-3
Performing Stimulus-Response Measurements 2-4
Ambient Light Suppression 2-8
Cleaning Connections for Accurate Measurements 2-11
3 Specifications and Regulatory Information
Specifications 3-3
Regulatory Information 3-8
4 Reference
Instrument Options 4-2
Accessories 4-2
Front-Panel Fiber-Optic Adapters 4-3
Power Cords 4-4
Agilent Technologies Service Offices 4-5
5 Servicing
General Information 5-4
Electrostatic Discharge Information 5-10
Troubleshooting 5-12
Performance Tests 5-18
Adjustment Procedures 5-22
Replacing Instrument Assemblies 5-27
Replaceable Parts 5-34
Replaceable Parts 5-47
Contents-1
1
Step 1. Inspect the Shipment 1-4
Step 2. Check the Fuse 1-6
Step 3. Connect the Line-Power Cable 1-7
Step 4. Turn on the Agilent 83437A 1-9
Returning the Instrument for Service 1-10
Getting Started
Getting Started
Getting Started
Getting Started
The instructions in this chapter show you how to install your Agilent 83437A.
You should be able to finish these procedures in about ten to twenty minutes.
After you’ve completed this chapter, continue with Chapter 2, “Making Measurements”.
Refer to Chapter 3, “Specifications and Regulatory Information” for information on operating conditions such as temperature.
If you should ever need to clean the cabinet, use a damp cloth only.
WARNING
This is a Safety Class I product (provided with a protective earthing
ground incorporated in the power cord). The mains plug shall only be
inserted in a socket outlet provided with a protective earth contact.
Any interruption of the protective conductor inside or outside of the
product is likely to make the product dangerous. Intentional
interruption is prohibited.
CAUTION
This product has autoranging line voltage input. Be sure the supply voltage is
within the specified range.
CAUTION
VENTILATION REQUIREMENTS: When installing the product in a cabinet, the
convection into and out of the product must not be restricted. The ambient
temperature (outside the cabinet) must be less than the maximum operating
temperature of the product by 4°C for every 100 watts dissipated in the
cabinet. If the total power dissipated in the cabinet is greater than 800 watts,
then forced convection must be used.
CAUTION
This product is designed for use in INSTALLATION CATEGORY II and
POLLUTION DEGREE 2, per IEC 1010 and 664 respectively.
1-2
Getting Started
Getting Started
Measurement accuracy—it’s up to you!
Fiber-optic connectors are easily damaged when connected to dirty or damaged cables
and accessories. The Agilent 83437A’s front-panel OPTICAL OUT connector is no exception. When you use improper cleaning and handling techniques, you risk expensive
instrument repairs, damaged cables, and compromised measurements.
Before you connect any fiber-optic cable to the Agilent 83437A, “Cleaning Connections
for Accurate Measurements” on page 2-11.
1-3
Getting Started
Step 1. Inspect the Shipment
Step 1. Inspect the Shipment
1 Verify that all components ordered have arrived by comparing the shipping
forms to the original purchase order. Inspect all shipping containers.
If your shipment is damaged or incomplete, save the packing materials and
notify both the shipping carrier and the nearest Agilent Technologies service
office. Agilent Technologies will arrange for repair or replacement of
damaged or incomplete shipments without waiting for a settlement from the
transportation company. Notify the Agilent Technologies customer engineer
of any problems.
2 Make sure that the serial number and options listed on the instrument’s rearpanel label match the serial number and options listed on the shipping
document. The following figure is an example of the rear-panel serial number
label:
1-4
Getting Started
Step 1. Inspect the Shipment
Table 1-1. Agilent 83437A Options
Option
Description
001
1550 nm isolator (offered only with standard instrument or Option 022)
002
1200 nm EELED source installed
003
1310 nm EELED source installed
004
1430 nm EELED source installed
005
Delete 1550 nm EELED source
006
1650 nm EELED source installed
011
Diamond HMS-10 fiber-optic input connector interface
013
DIN 47256 fiber-optic input connector interface
014
ST fiber-optic input connector interface
017
SC fiber-optic input connector interface
022
Angled contact fiber-optic output interface. Angled contact connects only with
FC/PC and Diamond HMS-10.
1-5
Getting Started
Step 2. Check the Fuse
Step 2. Check the Fuse
1 Locate the line-input connector on the instrument’s rear panel.
2 Disconnect the line-power cable if it is connected.
3 Use a small flat-blade screwdriver to open the pull-out fuse drawer.
4 Verify that the value of the line-voltage fuse in the pull-out drawer is correct.
The recommended fuse is an IEC 127 5×20 mm, 6.3A, 250 V, Agilent part
number 2110-0703.
Notice that an extra fuse is provided in a drawer located on the fuse holder.
WARNING
For continued protection against fire hazard, replace line fuse only
with same type and ratings, (type T 6.3A/250V for 100/240V
operation). The use of other fuses or materials is prohibited.
1-6
Getting Started
Step 3. Connect the Line-Power Cable
Step 3. Connect the Line-Power Cable
CAUTION
Always use the three-prong AC power cord supplied with this instrument.
Failure to ensure adequate earth grounding by not using this cord may cause
instrument damage.
CAUTION
Do not connect ac power until you have verified the line voltage is correct as
described in the following paragraphs. Damage to the equipment could result.
CAUTION
This instrument has autoranging line voltage input. Be sure the supply voltage
is within the specified range.
1 Verify that the line power meets the requirements shown in the following table.
Line Power Requirements
Power:
115 VAC: 50 WATTS MAX.
230 VAC: 50 WATTS MAX.
Voltage
nominal: 115 VAC / 230 VAC
range 115 VAC: 90-132 V
range 230 VAC: 198-254 V
Frequency
nominals: 50 Hz / 60 Hz
range: 47-63 Hz
2 Connect the line-power cord to the instrument’s rear-panel connector.
1-7
Getting Started
Step 3. Connect the Line-Power Cable
3 Connect the other end of the line-power cord to the power receptacle.
Various power cables are available to connect the Agilent 83437A to ac power
outlets unique to specific geographic areas. The cable appropriate for the area
to which the Agilent 83437A is originally shipped is included with the unit. You
can order additional ac power cables for use in different geographic areas.
Refer to “Power Cords” on page 4-4.
1-8
Getting Started
Step 4. Turn on the Agilent 83437A
Step 4. Turn on the Agilent 83437A
1 Press the front-panel LINE key.
The front-panel LINE switch disconnects the mains circuits from the mains supply after the EMC filters and before other parts of the instrument.
2 Use the front-panel ACTIVE key to turn the light output on and off.
If the Agilent 83437A fails to turn on properly, consider the following possibilities:
• Is the line fuse good?
• Does the line socket have power?
• Is it plugged into the proper ac power source?
If the instrument still fails, return it to Agilent Technologies for repair. Refer to
“Returning the Instrument for Service” on page 1-10.
1-9
Getting Started
Returning the Instrument for Service
Returning the Instrument for Service
The instructions in this section show you how to properly return the instrument for repair or calibration. Always call the Agilent Technologies Instrument
Support Center first to initiate service before returning your instrument to a
service office. This ensures that the repair (or calibration) can be properly
tracked and that your instrument will be returned to you as quickly as possible. Call this number regardless of where you are located. Refer to “Agilent
Technologies Service Offices” on page 4-5 for a list of service offices.
Agilent Technologies Instrument Support Center . . . . . . . . . . . (800) 403-0801
If the instrument is still under warranty or is covered by an Agilent Technologies maintenance contract, it will be repaired under the terms of the warranty
or contract (the warranty is at the front of this manual). If the instrument is
no longer under warranty or is not covered by an Agilent Technologies maintenance plan, Agilent Technologies will notify you of the cost of the repair after
examining the unit.
When an instrument is returned to a Agilent Technologies service office for
servicing, it must be adequately packaged and have a complete description of
the failure symptoms attached. When describing the failure, please be as specific as possible about the nature of the problem. Include copies of additional
failure information (such as the instrument failure settings, data related to
instrument failure, and error messages) along with the instrument being
returned.
Preparing the instrument for shipping
1 Write a complete description of the failure and attach it to the instrument.
Include any specific performance details related to the problem. The following
1-10
Getting Started
Returning the Instrument for Service
information should be returned with the instrument.
• Type of service required.
• Date instrument was returned for repair.
• Description of the problem:
• Whether problem is constant or intermittent.
• Whether instrument is temperature-sensitive.
• Whether instrument is vibration-sensitive.
• Instrument settings required to reproduce the problem.
• Performance data.
• Company name and return address.
• Name and phone number of technical contact person.
• Model number of returned instrument.
• Full serial number of returned instrument.
• List of any accessories returned with instrument.
2 Cover all front or rear-panel connectors that were originally covered when you
first received the instrument.
CAUTION
Cover electrical connectors to protect sensitive components from electrostatic
damage. Cover optical connectors to protect them from damage due to physical
contact or dust.
CAUTION
Instrument damage can result from using packaging materials other than the
original materials. Never use styrene pellets as packaging material. They do not
adequately cushion the instrument or prevent it from shifting in the carton.
They may also cause instrument damage by generating static electricity.
3 Pack the instrument in the original shipping containers. Original materials are
available through any Agilent Technologies office. Or, use the following
guidelines:
• Wrap the instrument in antistatic plastic to reduce the possibility of damage
caused by electrostatic discharge.
• For instruments weighing less than 54 kg (120 lb), use a double-walled, corrugated cardboard carton of 159 kg (350 lb) test strength.
• The carton must be large enough to allow approximately 7 cm (3 inches) on
all sides of the instrument for packing material, and strong enough to accommodate the weight of the instrument.
• Surround the equipment with approximately 7 cm (3 inches) of packing material, to protect the instrument and prevent it from moving in the carton. If
packing foam is not available, the best alternative is S.D-240 Air Cap™ from
1-11
Getting Started
Returning the Instrument for Service
Sealed Air Corporation (Commerce, California 90001). Air Cap looks like a
plastic sheet filled with air bubbles. Use the pink (antistatic) Air Cap™ to
reduce static electricity. Wrapping the instrument several times in this material will protect the instrument and prevent it from moving in the carton.
4 Seal the carton with strong nylon adhesive tape.
5 Mark the carton “FRAGILE, HANDLE WITH CARE”.
6 Retain copies of all shipping papers.
1-12
2
Modulating the Output Light 2-3
Performing Stimulus-Response Measurements 2-4
To characterize a passive device 2-6
Ambient Light Suppression 2-8
To suppress ambient light 2-9
Cleaning Connections for Accurate Measurements 2-11
Making Measurements
Making Measurements
Making Measurements
Making Measurements
In this chapter, you’ll find examples of making measurements using the
Agilent 83437A. These examples use your Agilent 83437A in conjunction with
an Agilent 71450/1/2B optical spectrum analyzer. Because of the
Agilent 83437A’s relatively high power density, the optical spectrum analyzer
can sweep much faster than if a white light source or surface emitting LED
were used.
The last section of this chapter explains how to maintain top performance of
your instrument by using proper handling and cleaning techniques. Be sure to
read this section before using your Agilent 83437A.
2-2
Making Measurements
Modulating the Output Light
Modulating the Output Light
The rear panel of the instrument is equipped with a MODULATION INPUT connector for each installed source. You can use these connectors to digitally modulate the source or completely disable its output light.
Digital modulation requires a TTL compatible signal. Modulation rates can
range from DC to 100 kHz. A “high” TTL value turns the source on. A “low”
TTL value turns the source off. The following schematic shows the input circuitry for each MODULATION INPUT connector.
If you want to turn a source off, simply connect a BNC short to the rear-panel
modulation input. You can order a BNC short from Agilent Technologies using
the following part number: 1250-0774.
2-3
Making Measurements
Performing Stimulus-Response Measurements
Performing Stimulus-Response Measurements
This section shows you how to perform stimulus-response measurements. The
more wavelength options your Agilent 83437A has installed, the wider the
wavelength range that can be measured. The combination of using the
Agilent 83437A for broadband stimulus and the optical spectrum analyzer for
selective response provides the following benefits:
•
•
•
•
All wavelengths are available simultaneously
Fast measurement speeds
Small coherence length
High dynamic range and high resolution
Measurements for DWDM systems
The following figure shows a system which is well suited for characterizing
dense wavelength-division multiplexed (DWDM) components. These include
devices such as phased arrays and add and drop demultiplexers.
The polarization controller is used to characterize polarization dependencies
of a device. For example, the center wavelength shift or the polarization
dependent loss of a demultiplexer. Because the Agilent 83437A emits unpolarized light, if you need polarized light, add a polarizer.
Increasing wavelength accuracy
When measuring deep-notch filters, increased absolute wavelength accuracy
may be required. To increase wavelength accuracy, the combination of an
Agilent 8168E/F tunable laser source and the Agilent 86120A multi-wavelength meter can be used to calibrate the optical spectrum analyzer. Simply
enter the difference between the two wavelength readings (optical spectrum
analyzer and multi-wavelength meter) into the optical spectrum analyzer as a
correction factor. Refer to the user’s guide for the optical spectrum analyzer to
learn how to enter correction factors. If you use this technique, be aware that
the Agilent 8168E/F measures wavelength in a vacuum and the optical spectrum analyzer measures wavelength in air unless you change its settings.
2-4
Making Measurements
Performing Stimulus-Response Measurements
Characterizing an optical amplifier
In addition to the measurement described in this section, the Agilent 83437A
is an ideal broadband light source for measuring the noise-gain profile of optical amplifiers. This allows you to accurately predict the amplifier’s performance in a 4, 8, or 16 channel DWDM systems. The Agilent 71452B optical
spectrum analyzers is ideal for performing these measurements. For more
information, refer to Agilent Technologies product notes 71452-1, -2, and -3
which are available from your local Agilent Technologies service office.
2-5
Making Measurements
Performing Stimulus-Response Measurements
To characterize a passive device
1 Turn on the optical spectrum analyzer and the Agilent 83437A, and allow them
to warm up for 1 hour.
2 Use a fiber optic cable to connect the Agilent 83437A’s output to the input of
the optical spectrum analyzer.
3 On the optical spectrum analyzer, press INSTR PRESET, AUTO MEAS, and then
AUTO ALIGN.
4 On the optical spectrum analyzer, use the START and STOP keys to set the proper
wavelength range.
5 Press REF LEVEL, and set the reference level to –30 dBm.
6 Press SENS, and set the sensitivity to –70 dBm. You can increase the sensitivity
beyond this value if needed.
7 If you are measuring a deep-notch filter, more sensitivity may be required.
Perform the following steps:
a Press Amptd, MORE, and then CHOP On so that On is underlined.
b Press BW,Swp, SWPTIME AutoMan, and set the sweep time to 50 seconds.
These steps cause the optical spectrum analyzer to compensate for the effect
of stray light inside the analyzer’s monochromator.
8 Press State, instr modes, and then STM/RESP.
9 Press STORE THRU->B, and then NORM On Off to normalize the response.
If changes to wavelength range or resolution bandwidth are made after this
trace is stored, repeat this step.
2-6
Making Measurements
Performing Stimulus-Response Measurements
10 Insert the device you are testing between the optical spectrum analyzer and the
Agilent 83437A.
11 Press NORMAL ON/OFF to turn the marker on. Rotate the front-panel knob to
read the values along the response.
2-7
Making Measurements
Ambient Light Suppression
Ambient Light Suppression
Ambient light can add significant errors to optical power measurements. This
is especially true when you are using or characterizing open beam devices.
The following example shows how the combination of the Agilent 83437A and
an Agilent 71450/1/2B optical spectrum analyzer can be used to eliminate this
error. The picture below shows the optical spectrum analyzer’s display. The
top trace shows the amplitude contribution from ambient light. The bottom
trace was captured after performing the procedure in this section.
In order to perform this measurement, the Agilent 83437A’s output is modulated at 270 Hz. Because, the optical spectrum analyzer has the ability to synchronize its data acquisition with the modulated light it can subtract out the
effects of ambient light. To learn more about using the optical spectrum analyzer’s adc trigger feature, refer to Agilent Technologies Product Note
71452–4, “Pulsed or Time-Dependent Optical Spectra Measurements.”
2-8
Making Measurements
Ambient Light Suppression
To suppress ambient light
This example uses specific equipment and settings to demonstrate how to
make accurate measurements in the presence of ambient light. As shown in
the equipment setup drawing, two Agilent 83437As are used. One
Agilent 83437A represents the broadband contribution of ambient light.
Because a 12 dB coupler is used, the ambient light contributes approximately
10 dB more power to the optical spectrum analyzer than the desired source.
1 Connect the equipment as shown in the following figure.
2 Set the square-wave generator’s TTL output for a frequency of 270 Hz. Set its
power level to 10 µW.
If you use a different modulation frequency, set the optical spectrum analyzer’s
resolution bandwidth to a value that is at least six times greater than the modulation frequency.
3 On the optical spectrum analyzer, press INSTR PRESET.
4 Use the START and STOP keys to set the wavelength range from 1500 nm to
1600 nm.
2-9
Making Measurements
Ambient Light Suppression
5 Press REF LEVEL, and set the reference level to –30 dBm.
6 Press Amptd, LOG dB/DIV, and enter 5 dB.
7 Press MORE, CHOP On Off so that Off is underlined.
8 Press BW,Swp, SWPTIME AutoMan, and set the sweep time to 10 seconds.
9 Press MORE, MORE, adc trigger, and then ADCTRIG AC.
10 Press ADCTRIG DELAY, and enter a value of 1 ms.
11 The display should now show the proper amplitude values with the effect of the
ambient light subtracted out.
2-10
Making Measurements
Cleaning Connections for Accurate Measurements
Cleaning Connections for Accurate
Measurements
Today, advances in measurement capabilities make connectors and connection techniques more important than ever. Damage to the connectors on calibration and verification devices, test ports, cables, and other devices can
degrade measurement accuracy and damage instruments. Replacing a damaged connector can cost thousands of dollars, not to mention lost time! This
expense can be avoided by observing the simple precautions presented in this
book. This book also contains a brief list of tips for caring for electrical connectors.
Choosing the Right Connector
A critical but often overlooked factor in making a good lightwave measurement is the selection of the fiber-optic connector. The differences in connector types are mainly in the mechanical assembly that holds the ferrule in
position against another identical ferrule. Connectors also vary in the polish,
curve, and concentricity of the core within the cladding. Mating one style of
cable to another requires an adapter. Agilent Technologies offers adapters for
most instruments to allow testing with many different cables. Figure 2-1 on
page 2-12 shows the basic components of a typical connectors.
The system tolerance for reflection and insertion loss must be known when
selecting a connector from the wide variety of currently available connectors.
Some items to consider when selecting a connector are:
• How much insertion loss can be allowed?
• Will the connector need to make multiple connections? Some connectors are
better than others, and some are very poor for making repeated connections.
• What is the reflection tolerance? Can the system take reflection degradation?
• Is an instrument-grade connector with a precision core alignment required?
• Is repeatability tolerance for reflection and loss important? Do your specifica-
2-11
Making Measurements
Cleaning Connections for Accurate Measurements
tions take repeatability uncertainty into account?
• Will a connector degrade the return loss too much, or will a fusion splice be required? For example, many DFB lasers cannot operate with reflections from
connectors. Often as much as 90 dB isolation is needed.
Figure 2-1. Basic components of a connector.
Over the last few years, the FC/PC style connector has emerged as the most
popular connector for fiber-optic applications. While not the highest performing connector, it represents a good compromise between performance, reliability, and cost. If properly maintained and cleaned, this connector can
withstand many repeated connections.
However, many instrument specifications require tighter tolerances than most
connectors, including the FC/PC style, can deliver. These instruments cannot
tolerate connectors with the large non-concentricities of the fiber common
with ceramic style ferrules. When tighter alignment is required, Agilent
Technologies instruments typically use a connector such as the Diamond
HMS-10, which has concentric tolerances within a few tenths of a micron. Agilent Technologies then uses a special universal adapter, which allows other
cable types to mate with this precision connector. See Figure 2-2.
2-12
Making Measurements
Cleaning Connections for Accurate Measurements
Figure 2-2. Universal adapters to Diamond HMS-10.
The HMS-10 encases the fiber within a soft nickel silver (Cu/Ni/Zn) center
which is surrounded by a tough tungsten carbide casing, as shown in
Figure 2-3.
Figure 2-3. Cross-section of the Diamond HMS-10 connector.
The nickel silver allows an active centering process that permits the glass fiber
to be moved to the desired position. This process first stakes the soft nickel
silver to fix the fiber in a near-center location, then uses a post-active staking
to shift the fiber into the desired position within 0.2 µm. This process, plus the
keyed axis, allows very precise core-to-core alignments. This connector is
found on most Agilent Technologies lightwave instruments.
2-13
Making Measurements
Cleaning Connections for Accurate Measurements
The soft core, while allowing precise centering, is also the chief liability of the
connector. The soft material is easily damaged. Care must be taken to minimize excessive scratching and wear. While minor wear is not a problem if the
glass face is not affected, scratches or grit can cause the glass fiber to move
out of alignment. Also, if unkeyed connectors are used, the nickel silver can be
pushed onto the glass surface. Scratches, fiber movement, or glass contamination will cause loss of signal and increased reflections, resulting in poor return
loss.
Inspecting Connectors
Because fiber-optic connectors are susceptible to damage that is not immediately obvious to the naked eye, poor measurements result without the user
being aware. Microscopic examination and return loss measurements are the
best way to ensure good measurements. Good cleaning practices can help
ensure that optimum connector performance is maintained. With glass-toglass interfaces, any degradation of a ferrule or the end of the fiber, any stray
particles, or finger oil can have a significant effect on connector performance.
Where many repeat connections are required, use of a connector saver or
patch cable is recommended.
Figure 2-4 shows the end of a clean fiber-optic cable. The dark circle in the
center of the micrograph is the fiber’s 125 µm core and cladding which carries
the light. The surrounding area is the soft nickel-silver ferrule. Figure 2-5
shows a dirty fiber end from neglect or perhaps improper cleaning. Material is
smeared and ground into the end of the fiber causing light scattering and poor
reflection. Not only is the precision polish lost, but this action can grind off the
glass face and destroy the connector.
Figure 2-6 shows physical damage to the glass fiber end caused by either
repeated connections made without removing loose particles or using
improper cleaning tools. When severe, the damage of one connector end can
be transferred to another good connector endface that comes in contact with
the damaged one. Periodic checks of fiber ends, and replacing connecting
cables after many connections is a wise practice.
The cure for these problems is disciplined connector care as described in the
following list and in “Cleaning Connectors” on page 2-18.
2-14
Making Measurements
Cleaning Connections for Accurate Measurements
Use the following guidelines to achieve the best possible performance when
making measurements on a fiber-optic system:
• Never use metal or sharp objects to clean a connector and never scrape the
connector.
• Avoid matching gel and oils.
Figure 2-4. Clean, problem-free fiber end and ferrule.
Figure 2-5. Dirty fiber end and ferrule from poor cleaning.
2-15
Making Measurements
Cleaning Connections for Accurate Measurements
Figure 2-6. Damage from improper cleaning.
While these often work well on first insertion, they are great dirt magnets. The
oil or gel grabs and holds grit that is then ground into the end of the fiber.
Also, some early gels were designed for use with the FC, non-contacting connectors, using small glass spheres. When used with contacting connectors,
these glass balls can scratch and pit the fiber. If an index matching gel or oil
must be used, apply it to a freshly cleaned connector, make the measurement,
and then immediately clean it off. Never use a gel for longer-term connections
and never use it to improve a damaged connector. The gel can mask the extent
of damage and continued use of a damaged fiber can transfer damage to the
instrument.
• When inserting a fiber-optic cable into a connector, gently insert it in as
straight a line as possible. Tipping and inserting at an angle can scrape material
off the inside of the connector or even break the inside sleeve of connectors
made with ceramic material.
• When inserting a fiber-optic connector into a connector, make sure that the fiber end does not touch the outside of the mating connector or adapter.
• Avoid over tightening connections.
Unlike common electrical connections, tighter is not better. The purpose of
the connector is to bring two fiber ends together. Once they touch, tightening
only causes a greater force to be applied to the delicate fibers. With connectors that have a convex fiber end, the end can be pushed off-axis resulting in
misalignment and excessive return loss. Many measurements are actually
improved by backing off the connector pressure. Also, if a piece of grit does
happen to get by the cleaning procedure, the tighter connection is more likely
to damage the glass. Tighten the connectors just until the two fibers touch.
2-16
Making Measurements
Cleaning Connections for Accurate Measurements
• Keep connectors covered when not in use.
• Use fusion splices on the more permanent critical nodes. Choose the best connector possible. Replace connecting cables regularly. Frequently measure the
return loss of the connector to check for degradation, and clean every connector, every time.
All connectors should be treated like the high-quality lens of a good camera.
The weak link in instrument and system reliability is often the inappropriate
use and care of the connector. Because current connectors are so easy to use,
there tends to be reduced vigilance in connector care and cleaning. It takes
only one missed cleaning for a piece of grit to permanently damage the glass
and ruin the connector.
Measuring insertion loss and return loss
Consistent measurements with your lightwave equipment are a good indication that you have good connections. Since return loss and insertion loss are
key factors in determining optical connector performance they can be used to
determine connector degradation. A smooth, polished fiber end should produce a good return-loss measurement. The quality of the polish establishes
the difference between the “PC” (physical contact) and the “Super PC” connectors. Most connectors today are physical contact which make glass-to-glass
connections, therefore it is critical that the area around the glass core be clean
and free of scratches. Although the major area of a connector, excluding the
glass, may show scratches and wear, if the glass has maintained its polished
smoothness, the connector can still provide a good low level return loss connection.
If you test your cables and accessories for insertion loss and return loss upon
receipt, and retain the measured data for comparison, you will be able to tell in
the future if any degradation has occurred. Typical values are less than 0.5 dB
of loss, and sometimes as little as 0.1 dB of loss with high performance connectors. Return loss is a measure of reflection: the less reflection the better
(the larger the return loss, the smaller the reflection). The best physically
contacting connectors have return losses better than 50 dB, although 30 to
40 dB is more common.
2-17
Making Measurements
Cleaning Connections for Accurate Measurements
Visual inspection of fiber ends
Visual inspection of fiber ends can be helpful. Contamination or imperfections
on the cable end face can be detected as well as cracks or chips in the fiber
itself. Use a microscope (100X to 200X magnification) to inspect the entire
end face for contamination, raised metal, or dents in the metal as well as any
other imperfections. Inspect the fiber for cracks and chips. Visible imperfections not touching the fiber core may not affect performance (unless the
imperfections keep the fibers from contacting).
WARNING
Always remove both ends of fiber-optic cables from any instrument,
system, or device before visually inspecting the fiber ends. Disable all
optical sources before disconnecting fiber-optic cables. Failure to do
so may result in permanent injury to your eyes.
Cleaning Connectors
The procedures in this section provide the proper steps for cleaning fiberoptic cables and Agilent Technologies universal adapters. The initial cleaning,
using the alcohol as a solvent, gently removes any grit and oil. If a caked-on
layer of material is still present, (this can happen if the beryllium-copper sides
of the ferrule retainer get scraped and deposited on the end of the fiber during
insertion of the cable), a second cleaning should be performed. It is not
uncommon for a cable or connector to require more than one cleaning.
CAUTION
Agilent Technologies strongly recommends that index matching compounds
not be applied to their instruments and accessories. Some compounds, such as
gels, may be difficult to remove and can contain damaging particulates. If you
think the use of such compounds is necessary, refer to the compound
manufacturer for information on application and cleaning procedures.
Table 2-1. Cleaning Accessories
Item
Agilent Part Number
Any commercially available denatured alcohol
—
Cotton swabs
8520-0023
Small foam swabs
9300-1223
Compressed dust remover (non-residue)
8500-5262
2-18
Making Measurements
Cleaning Connections for Accurate Measurements
Table 2-2. Dust Caps Provided with Lightwave Instruments
Item
Agilent Part Number
Laser shutter cap
08145-64521
FC/PC dust cap
08154-44102
Biconic dust cap
08154-44105
DIN dust cap
5040-9364
HMS10/dust cap
5040-9361
ST dust cap
5040-9366
To clean a non-lensed connector
CAUTION
Do not use any type of foam swab to clean optical fiber ends. Foam swabs can
leave filmy deposits on fiber ends that can degrade performance.
1 Apply pure isopropyl alcohol to a clean lint-free cotton swab or lens paper.
Cotton swabs can be used as long as no cotton fibers remain on the fiber end
after cleaning.
2 Clean the ferrules and other parts of the connector while avoiding the end of
the fiber.
3 Apply isopropyl alcohol to a new clean lint-free cotton swab or lens paper.
4 Clean the fiber end with the swab or lens paper.
Do not scrub during this initial cleaning because grit can be caught in the
swab and become a gouging element.
5 Immediately dry the fiber end with a clean, dry, lint-free cotton swab or lens
paper.
6 Blow across the connector end face from a distance of 6 to 8 inches using
filtered, dry, compressed air. Aim the compressed air at a shallow angle to the
fiber end face.
Nitrogen gas or compressed dust remover can also be used.
2-19
Making Measurements
Cleaning Connections for Accurate Measurements
CAUTION
Do not shake, tip, or invert compressed air canisters, because this releases
particles in the can into the air. Refer to instructions provided on the
compressed air canister.
7 As soon as the connector is dry, connect or cover it for later use.
If the performance, after the initial cleaning, seems poor try cleaning the connector again. Often a second cleaning will restore proper performance. The
second cleaning should be more arduous with a scrubbing action.
To clean an adapter
The fiber-optic input and output connectors on many Agilent Technologies
instruments employ a universal adapter such as those shown in the following
picture. These adapters allow you to connect the instrument to different types
of fiber-optic cables.
Figure 2-7. Universal adapters.
1 Apply isopropyl alcohol to a clean foam swab.
Cotton swabs can be used as long as no cotton fibers remain after cleaning. The
foam swabs listed in this section’s introduction are small enough to fit into
adapters.
Although foam swabs can leave filmy deposits, these deposits are very thin, and
the risk of other contamination buildup on the inside of adapters greatly outweighs the risk of contamination by foam swabs.
2 Clean the adapter with the foam swab.
3 Dry the inside of the adapter with a clean, dry, foam swab.
4 Blow through the adapter using filtered, dry, compressed air.
Nitrogen gas or compressed dust remover can also be used. Do not shake, tip,
or invert compressed air canisters, because this releases particles in the can
into the air. Refer to instructions provided on the compressed air canister.
2-20
3
Specifications 3-3
Regulatory Information 3-8
Specifications and Regulatory
Information
Specifications and Regulatory Information
Specifications and Regulatory Information
Specifications and Regulatory Information
This chapter lists specification and characteristics of the instrument. The distinction between these terms is described as follows:
• Specifications describe warranted performance over the temperature range
0°C to +45°C and relative humidity <95% (unless otherwise noted). All specifications apply after the instrument’s temperature has been stabilized after
15 minutes of continuous operation.
• Characteristics provide useful information by giving functional, but nonwarranted, performance parameters. Characteristics are printed in italics.
Calibration Cycle
This instrument requires periodic verification of performance. The instrument
should have a complete verification of specifications at least once every two
years.
3-2
Specifications and Regulatory Information
Specifications
Specifications
Table 3-1. General Amplitude Specifications
Peak wavelength
Total power
a
1200 nm
Source
1310 nm
Source
1430 nm
Source
1550 nm
Source
1650 nm
Source
1200 nm ±30 nm
> –17 dBm
1310 nm ±20 nm
> –13 dBm
1430 nm ±30 nm
> –13 dBm
1550 nm ±20 nm
> –13 dBm
1650 nm ±30 nm
> –17 dBm
> 20 µW
> 50 µW
> 50 µW
> 50 µW
> 20 µW
a. Measured with an InGaAs power sensor. Configurations with multiple source’s have less power. Typical losses are 4 dB per coupler except
the 1310 nm/1550 nm and the 1430 nm/1650 nm coupler which have less than 1 dB loss. See figures in this section which show the
spectrum for typical configurations.
Table 3-2. General Amplitude Characteristics
1200 nm
Source
1310 nm
Source
1430 nm
Source
1550 nm
Source
1650 nm
Source
3 dB width
(characteristic)
45 nm
47 nm
50 nm
52 nm
55 nm
Peak densitya
(characteristic)
> –37 dBm/nm
> 200 nW/nm
> –33 dBm/nm
> 500 nW/nm
> –33 dBm/nm
> 500 nW/nm
> –33 dBm/nm
> 500 nW/nm
> –37 dBm/nm
> 200 nW/nm
3-3
Specifications and Regulatory Information
Specifications
Table 3-3. Total Power
Installed Options
002
003
Minimum Output Power (dBm)
004
005a
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
006
•
•
•
•
–17.0
–18.0
–13.0
–14.0
•
–14.0
–18.0
–13.0
–17.0
–18.0
–18.0
–17.0
–17.0
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
–21.0
–25.0
–17.0
–21.0
–21.0
–25.0
–21.0
–21.0
–21.0
–25.0
–21.0
–25.0
–25.0
–21.0
–25.0
1550 nm
Source
–17.0
–17.0
1650 nm
Source
–21.0
–17.0
–22.0
–18.0
–14.0
–18.0
–21.0
–21.0
–17.0
–18.0
–17.0
–18.0
–18.0
–18.0
–22.0
–22.0
–17.0
–21.0
–21.0
–21.0
–21.0
–18.0
–17.0
–18.0
–18.0
–18.0
–17.0
–21.0
–18.0
–21.0
–21.0
a. Option 005 deletes the 1550 nm source.
b. Specification remains the same value if the Option 001 1550 nm isolator is installed.
3-4
1430 nm
Source
–13.0b
–17.0
•
•
•
•
•
•
•
1300 nm
Source
•
•
•
•
•
•
•
•
•
•
1200 nm
Source
–21.0
–21.0
–22.0
–22.0
–18.0
–18.0
–25.0
–21.0
–21.0
–21.0
–18.0
–18.0
–22.0
Specifications and Regulatory Information
Specifications
General Specifications
Compatible fiber
9/125 µm, single mode
Power stabilitya
< ±0.02 dB (15 minutes) for 1310 nm, 1430 nm, and 1550 nm sources
< ±0.03 dB (15 minutes) for 1200 nm and 1650 nm sources
< ±0.05 dB (6 hours)
a. Ambient temperature change <
instrument and power meter.
±1°C measured with power meter having
>30 dB return loss. One hour warm-up time required for
General Characteristics
Output return loss
Modulation
25 dB (characteristic)
50 dB (characteristic) a
Digital (TTL compatible)
100% on-off
DC to 100 kHz (characteristic)
a. Measured at 1550 nm with isolator (Option 001) and FC/APC connector (Option 022).
Characteristic spectrum for standard 1550 nm configuration
3-5
Specifications and Regulatory Information
Specifications
Characteristic spectrum with two EELEDs installed
(Option 003)
Characteristic spectrum with three EELEDs
(Options 003 and 004)
3-6
Specifications and Regulatory Information
Specifications
Characteristic spectrum with four EELEDs
(Options 003, 004, and 006)
Operating Specifications
Use
Power:
Voltage
Frequency
Altitude
Operating temperature
Indoor
115 VAC: 50 WATTS MAX.
230 VAC: 50 WATTS MAX.
nominal: 115 VAC / 230 VAC
range 115 VAC: 90-132 V
range 230 VAC: 198-254 V
nominals: 50 Hz / 60 Hz
range: 47-63 Hz
Up to 15,000 feet (4,572 meters)
0°C to +45°C
Storage temperature
– 40°C to +70°C
Maximum relative humidity
80% for temperatures up to 31°C decreasing linearly to 50%
relative humidity at 40°C
IEC LED Class 1 according to IEC 60825
5.5 kg (12 lb)
102 x 213 x 450 mm (4.02 x 8.39 x 17.72 in)
System II chassis (half module, 3.5" height, 1.75" hole spacing)
LED Classification
Weight
Dimensions (H x W x D)
3-7
Specifications and Regulatory Information
Regulatory Information
Regulatory Information
• Laser Classification: This product contains an IEC LED Class 1.
• This product complies with 21 CFR 1040.10 and 1040.11.
• This product is designed for use in INSTALLATION CATEGORY II and POLLUTION DEGREE 2, per IEC 1010 and 664 respectively.
Notice for
Germany: Noise
Declaration
This is to declare that this instrument is in conformance with the German Regulation on Noise Declaration for Machines (Laermangabe nach der Maschinenlaermrerordnumg –3.GSGV Deutschland).
Acoustic Noise Emission
LpA < 70 dBOperator position
Normal position
per ISO 7779
3-8
Geraeuschemission
LpA < 70 dB
am Arbeitsplatz
normaler Betrieb
nach DIN 45635 t.19
Specifications and Regulatory Information
Regulatory Information
Declaration of Conformity
l
3-9
4
Instrument Options 4-2
Accessories 4-2
Front-Panel Fiber-Optic Adapters 4-3
Power Cords 4-4
Agilent Technologies Service Offices 4-5
Reference
Reference
Instrument Options
Instrument Options
Option
Description
001
1550 nm isolator (offered only with standard instrument or Option 022)
002
1200 nm EELED source installed
003
1310 nm EELED source installed
004
1430 nm EELED source installed
005
Delete 1550 nm EELED source
006
1650 nm EELED source installed
011
Diamond HMS-10 fiber-optic input connector interface
013
DIN fiber-optic input connector interface
014
ST fiber-optic input connector interface
017
SC fiber-optic input connector interface
022
Angled contact fiber-optic output interface. Angled contact connects only with
FC/PC and Diamond HMS-10.
Accessories
• BNC 50Ω short (m) for rear-panel MODULATION INPUT connectors. Disables selected source. Agilent Technologies part number 1250-0774.
• Agilent 81113PC DIN 4108 (angled) to Super-PC (straight) patchcord for use
with Option 022 and Option 013 instruments.
4-2
Reference
Front-Panel Fiber-Optic Adapters
Front-Panel Fiber-Optic Adapters
Front Panel
Fiber-Optic
Adapter
Description
Agilent Part Number
Diamond HMS-10
81000AI
FC/PCa
81000FI
D4
81000GI
SC
81000KI
DIN
81000SI
ST
81000VI
Biconic
81000WI
Dust Covers
FC connector
1005-0594
Diamond HMS-10 connector
1005-0593
DIN connector
1005-0595
ST connector
1005-0596
SC connector
1005-0597
a. The FC/PC adapter is the standard adapter supplied with the instrument.
4-3
Reference
Power Cords
Power Cords
Plug Type
Cable Part No.
Plug Description
Length
(in/cm)
Color
Country
250V
8120-1351
8120-1703
Straight *BS1363A
90°
90/228
90/228
Gray
Mint Gray
United Kingdom,
Cyprus, Nigeria, Zimbabwe, Singapore
250V
8120-1369
Straight *NZSS198/ASC
90°
79/200
Gray
Australia, New Zealand
87/221
Mint Gray
8120-0696
250V
8120-1689
8120-1692
8120-2857p
Straight *CEE7-Y11
90°
Straight (Shielded)
79/200
79/200
79/200
Mint Gray
Mint Gray
Coco Brown
East and West Europe,
Saudi Arabia, So.
Africa, India (unpolarized in many nations)
125V
8120-1378
8120-1521
8120-1992
Straight *NEMA5-15P
90°
Straight (Medical) UL544
90/228
90/228
96/244
Jade Gray
Jade Gray
Black
United States, Canada,
Mexico, Philippines,
Taiwan
250V
8120-2104
8120-2296
Straight *SEV1011
1959-24507
Type 12 90°
79/200
79/200
Mint Gray
Mint Gray
Switzerland
220V
8120-2956
8120-2957
Straight *DHCK107
90°
79/200
79/200
Mint Gray
Mint Gray
Denmark
250V
8120-4211
8120-4600
Straight SABS164
90°
79/200
79/200
Jade Gray
Republic of South
Africa
India
100V
8120-4753
8120-4754
Straight MITI
90°
90/230
90/230
Dark Gray
Japan
* Part number shown for plug is the industry identifier for the plug only. Number shown for cable is the Agilent
Technologies part number for the complete cable including the plug.
4-4
Reference
Agilent Technologies Service Offices
Agilent Technologies Service Offices
Before returning an instrument for service, call the Agilent Technologies
Instrument Support Center at (800) 403-0801, visit the Test and Measurement
Web Sites by Country page at http://www.tm.agilent.com/tmo/country/English/
index.html, or call one of the numbers listed below.
Agilent Technologies Service Numbers
Austria
01/25125-7171
Belgium
32-2-778.37.71
Brazil
(11) 7297-8600
China
86 10 6261 3819
Denmark
45 99 12 88
Finland
358-10-855-2360
France
01.69.82.66.66
Germany
0180/524-6330
India
080-34 35788
Italy
+39 02 9212 2701
Ireland
01 615 8222
Japan
(81)-426-56-7832
Korea
82/2-3770-0419
Mexico
(5) 258-4826
Netherlands
020-547 6463
Norway
22 73 57 59
Russia
+7-095-797-3930
Spain
(34/91) 631 1213
Sweden
08-5064 8700
Switzerland
(01) 735 7200
United Kingdom
01 344 366666
United States/Canada
(800) 403-0801
4-5
5
General Information 5-4
Electrostatic Discharge Information 5-10
Troubleshooting 5-12
If the output power is low 5-13
To check an LED Driver Board Assembly 5-14
To check the A2A2 LED Modulation Board Assembly 5-15
To check the power supply 5-16
To check the line-power fuse 5-17
Performance Tests 5-18
Test 1. Total Output Power 5-19
Test 2. Peak Wavelength Accuracy 5-20
Test 3. Power Stability 5-21
Adjustment Procedures 5-22
To adjust total power 5-22
Replacing Instrument Assemblies 5-27
To remove the instrument cover 5-28
To replace the A2 Source assembly 5-28
To route the rear-panel BNC modulation cables 5-29
To replace line filter assembly FL1 5-32
To replace a cable clip 5-33
Replaceable Parts 5-47
Servicing
Servicing
Servicing
Servicing
In this chapter, you'll find information on troubleshooting, testing performance, adjusting, and replacing parts in the instrument.
Safety first!
Before servicing the Agilent 83437A, familiarize yourself with the safety markings on the instrument and the safety instructions in this manual. This instrument has been manufactured and tested according to international safety
standards. To ensure safe operation of the instrument and the personal safety
of the user and service personnel, the cautions and warnings in this manual
must be heeded. Refer to the summary of safety considerations at the front of
this manual.
WARNING
These servicing instructions are for use by qualified personnel only.
To avoid electrical shock, do not perform any servicing unless you are
qualified to do so.
WARNING
The opening of covers or removal of parts is likely to expose
dangerous voltages. Disconnect the instrument from all voltage
sources while it is being opened.
WARNING
The power cord is connected to internal capacitors that may remain
live for five seconds after disconnecting the plug from its power
supply.
WARNING
This is a Safety Class 1 Product (provided with a protective earthing
ground incorporated in the power cord). The mains plug shall only be
inserted in a socket outlet provided with a protective earth contact.
Any interruption of the protective conductor inside or outside of the
product is likely to make the product dangerous. Intentional
interruption is prohibited.
5-2
Servicing
Servicing
WARNING
For continued protection against fire hazard, replace line fuse only
with same type and ratings, (type T 6.3A/250V for 100/240V
operation). The use of other fuses or materials is prohibited.
5-3
Servicing
General Information
General Information
Whenever you contact Agilent Technologies about your Agilent 83437A, have
the complete serial number and option designation available. This will ensure
you obtain accurate service information.
• Refer to Table 5-1 on page 5-5 for a list of service tools.
• Refer to Table 5-2 on page 5-5 for a list of internal labels.
• Refer to Table 5-3 on page 5-6 for the location of each instrument assembly.
• Refer to Table 5-4 on page 5-8 for the location of each cable.
Clean the cabinet using a damp cloth only.
Protect against ESD damage
Electrostatic discharge (ESD) can damage or destroy electronic components.
All work on electronic assemblies should be performed at a static-safe work
station. Refer to “Electrostatic Discharge Information” on page 5-10 for more
information on preventing ESD.
A2 EELED Source Assembly
The A2 EELED Source Assembly can not be repaired. It must be returned to
Agilent Technologies for service as a complete unit. The following assemblies
are included in the A2 EELED Source Assembly. Refer to “Major Assemblies”
on page 5-6.
A2A1 Fiber Track Assembly
A2A2 LED Modulation Board Assembly
A2A3 through A2A6 EELED (loading depends on instrument option)
A2MP1 LED heat sink
A2MP2 optical deck sheet metal
5-4
Servicing
General Information
CAUTION
Do not remove any of the screws or open the cover on the A2A1 Fiber Track
Assembly. Disturbing the routing of the internal fiber-optic cable could degrade
instrument performance. There are no serviceable components inside this
assembly. Return the complete A2 EELED Source Assembly to Agilent
Technologies for service.
Table 5-1. Service Tools
Tool
Agilent Part Number
Small Pozidriv screwdriver
8710-0899
Wire cutter
8710-0012
Long-nose pliers
8710-1107
5.5 mm nut driver
8710-1220
7 mm nut driver
8710-1217
TORX T-10 driver
8710-1623
TORX T-15 driver
8710-1622
Table 5-2. Internal Labels
This label identifies the A2A1 Fiber Track Assembly. The
serial and option numbers listed on the label are for the
instrument that the A2A1 assembly is installed in.
5-5
Servicing
General Information
Table 5-3. Major Assemblies
Reference
Designator
Description
A1
Keyboard Assembly
A2
Source Assembly (Not orderable, return A2 to Agilent Technologies)
A2A1
Fiber Track Assembly (Not orderable, return A2 to Agilent Technologies)
A2A2
LED Modulation Board Assembly (Not orderable, return A2 to Agilent
Technologies)
A2A3
EELED (Not orderable, return A2 to Agilent Technologies)
A2A4
EELED (Not orderable, return A2 to Agilent Technologies)
A2A5
EELED (Not orderable, return A2 to Agilent Technologies)
A2A6
EELED (Not orderable, return A2 to Agilent Technologies)
A3
Power Distribution Board Assembly
A4
Power Supply Board Assembly
A5
LED Driver Board Assembly #1
A6
LED Driver Board Assembly #2
A7
LED Driver Board Assembly #3
A8
LED Driver Board Assembly #4
B1
Fan Assembly
FL1
Line-Module Filter. Also part of W2
5-6
Servicing
General Information
5-7
Servicing
General Information
Table 5-4. Cable Assemblies
Reference
Designator
Description
W1
Input fiber optic cable (Part of A2 assembly)
W2
Line switch cable (includes FL1 and LINE switch), to A4J1
W3
A3J7 to B1 (Part of B1)
W4
Power supply cable, A2A2J2 pin 5 to front-panel “LINE” LED indicator (green
wire)
W5
Power supply cable, A2A2J1 to front-panel “ACTIVE” LED and A1 assembly
W6
Power distribution cable, A4J2 to A3J6
W7
Modulation cable, A3J5 to A2A2J2
W8
Driver #1 cable, A3J1 to A5J2
W9
Driver #2 cable (Option 002, 003, 004, and 006), 18.5 inches long, A3J2 to A6J2
W10
Driver #3 cable (Option 002, 003, 004, and 006), 18.5 inches long, A3J3 to A7J2
W11
Driver #4 cable (Option 002, 003, 004, and 006), 18.5 inches long, A3J4 to A8J2
W12
Ribbon cable #1, A2A2J91 to A5J1
W13
Ribbon cable #2, (Option 002, 003, 004, and 006), A2A2J92 to A6J1
W14
Ribbon cable #3, (Option 002, 003, 004, and 006), A2A2J93 to A7J1
W15
Ribbon cable #4, (Option 002, 003, 004, and 006), A2A2J94 to A8J1
W16
SMB to BNC cable, rear-panel J1 to A2A2J21
W17
SMB to BNC cable, rear-panel J2 to A2A2J11
W18
SMB to BNC cable, rear-panel J3 to A2A2J31
W19
SMB to BNC cable, rear-panel J4 to A2A2J41
5-8
Servicing
General Information
5-9
Servicing
Electrostatic Discharge Information
Electrostatic Discharge Information
Electrostatic discharge (ESD) can damage or destroy electronic components.
All work on electronic assemblies should be performed at a static-safe work
station. The following figure shows an example of a static-safe work station
using two types of ESD protection:
• Conductive table-mat and wrist-strap combination.
• Conductive floor-mat and heel-strap combination.
Both types, when used together, provide a significant level of ESD protection.
Of the two, only the table-mat and wrist-strap combination provides adequate
ESD protection when used alone.
5-10
Servicing
Electrostatic Discharge Information
To ensure user safety, the static-safe accessories must provide at least 1 MΩ of
isolation from ground. Refer to Table 5-5 on page 5-11 for information on
ordering static-safe accessories.
WARNING
These techniques for a static-safe work station should not be used
when working on circuitry with a voltage potential greater than
500 volts.
Table 5-5. Static-Safe Accessories
Agilent Part
Number
Description
9300-0797
3M static control mat 0.6 m × 1.2 m (2 ft× 4 ft) and 4.6 cm (15 ft) ground
wire. (The wrist-strap and wrist-strap cord are not included. They must be
ordered separately.)
9300-0980
Wrist-strap cord 1.5 m (5 ft)
9300-1383
Wrist-strap, color black, stainless steel, without cord, has four adjustable
links and a 7 mm post-type connection.
9300-1169
ESD heel-strap (reusable 6 to 12 months).
5-11
Servicing
Troubleshooting
Troubleshooting
WARNING
The opening of covers or removal of parts is likely to expose
dangerous voltages. Disconnect the instrument from all voltage
sources while it is being opened.
WARNING
The power cord is connected to internal capacitors that may remain
live for five seconds after disconnecting the plug from its power
supply.
The following procedures are located in this section:
If the output power is low 5-13
To check an LED Driver Board Assembly 5-14
To check the A2A2 LED Modulation Board Assembly
To check the power supply 5-16
To check the line-power fuse 5-17
5-12
5-15
Servicing
Troubleshooting
If the output power is low
1 Check for the following common problems:
❒ Check that the front-panel ACTIVE key is on. If the ACTIVE or LINE LEDs do not
light, refer to “To check the power supply” on page 5-16.
❒ Clean the OPTICAL OUT connector as described in “Cleaning Connections for
Accurate Measurements” on page 2-11.
❒ Remove any modulating signal from the rear-panel MODULATION INPUT connectors. Modulation reduces the average output power. Of course, the decrease in power is tied to the duty cycle of the modulating signal.
❒ Check the rear-panel MODULATION INPUT connectors. If a BNC short is connected to one of these jacks, the output for the associated EELED is turned
off.
2 Perform the adjustment procedure “To adjust total power” on page 5-22.
For instrument’s with multiple EELEDs, use the procedure to locate the EELEDs with low power. Confirm that the power is low and cannot be adjusted
within the specification. If the output power is low on all of the EELEDs, refer
to “To check the power supply” on page 5-16.
3 For the EELED with the low power, locate its associated LED Driver Board
Assembly as explained in the adjustment procedure.
4 Perform the procedure “To check an LED Driver Board Assembly” on
page 5-14.
5 Perform the procedure “To check the A2A2 LED Modulation Board Assembly”
on page 5-15.
5-13
Servicing
Troubleshooting
To check an LED Driver Board Assembly
All of the A5 through A8 LED Driver Board Assemblies are identical.
1 Remove the power supply cable from J2 on the LED Driver Board Assembly.
The end of this cable can be probed to measure all of the dc voltages supplied
in the assembly. The following list shows each wire color, its color code, and the
voltages present:
•
•
•
•
•
Red (2) wire: +15V
White/red (92) wire: +5V
Violet (7) wire: –15V
Black (0) wire: ground
White/black (90) wire: ground
2 Located the two indicator LEDs (green DS1 and yellow DS2) on the LED Driver
Board Assembly.
3 If the green LED is on, the current source driving the EELED is operating
correctly. If the yellow LED is on, the EELED temperature stabilization loop is
not functioning—the current to the EELED is automatically turned off which
turns the green LED off.
4 For instruments with multiple EELEDs, if the green LED is off, drive the
EELED with another LED Driver Board Assembly:
a Move a ribbon cable (W12, W13, W14, or W15) on the A2A2 LED Modulation
Board Assembly from a good EELED to the connector for the suspected EELED.
b Try to adjust the EELED’s power to within the specification. If the power
can be adjusted, replace the LED Driver Board Assembly.
5 For instruments with a single EELED, if the yellow LED is off, check ribbon
cable (W12, W13, W14, or W15).
5-14
Servicing
Troubleshooting
To check the A2A2 LED Modulation Board Assembly
1 Check the +5V supply by probing the center pin of J11, J21, J31, or J41. The
modulation input cables from the rear panel connect to these jacks.
2 Check the –15V supply by probing any of the three resistors that are located
next to J2. These resistors are loaded in a straight line and have the label “1471”
printed on them.
3 Locate the four large 2W resistors on the assembly. There is one of these
resistors for each possible EELED loaded on the assembly. Locate the 2W
resistor that is closest to the EELED with the low power.
4 Measure the voltage on the end of the resistor that is furthest from the EELED.
The voltage should measure approximately –1.5V.
5 The EELED is being driven by the current source and should be turned on.
6 Press the front-panel ACTIVE key so that the front-panel ACTIVE light is turned
off. The voltage measured at the 2W resistor should now be approximately
+0.7V.
The EELED is turned off.
7 If the voltage measured across the resistor is incorrect, return the instrument
to Agilent Technologies for servicing.
5-15
Servicing
Troubleshooting
To check the power supply
1 Check the 6.3A fuse in the rear-panel’s line module FL1. Refer to “To check the
line-power fuse” on page 5-17.
2 Remove the power supply cable from J2 on one of the A5 through A8 LED
Driver Board Assemblies. The end of this cable can be probed to measure all of
the dc voltages supplied in the instrument. The following list shows each wire
color, its color code, and its purpose:
•
•
•
•
•
Red (2) wire: +15V
White/red (92) wire: +5V
Violet (7) wire: –15V
Black (0) wire: ground
White/black (90) wire: ground
3 If no voltages are detected, check that the ac line input voltage at the cable that
connects to J1 on the A4 Power Supply Board Assembly. Measure the line
voltage across the white/gray/red wire and the gray wire. If the ac line voltage
is present, replace the A4 Power Supply Board Assembly.
5-16
Servicing
Troubleshooting
To check the line-power fuse
1 Locate the line-input connector on the instrument’s rear panel.
2 Disconnect the line-power cable if it is connected.
3 Use a small flat-blade screwdriver to open the pull-out fuse drawer.
The recommended fuse is an IEC 127 5×20 mm, 6.3A, 250 V, Agilent Technologies part number 2110-0703. Notice that an extra fuse is provided in a drawer
located on the fuse holder.
WARNING
For continued protection against fire hazard, replace line fuse only
with same type and ratings, (type T 6.3A/250V for 100/240V
operation). The use of other fuses or materials is prohibited.
5-17
Servicing
Performance Tests
Performance Tests
The procedures in this section test the Agilent 83437A’s performance using
the specifications listed in Chapter 3, “Specifications and Regulatory Information” as the performance standard. All of the tests are done manually without
the aid of a computer. None of these tests require access to the interior of the
instrument. Allow the Agilent 83437A to warm up for 15 minutes before doing
any of the performance tests.
Test 1. Total Output Power 5-19
Test 2. Peak Wavelength Accuracy
Test 3. Power Stability 5-21
5-20
Calibration Cycle
This instrument requires periodic verification of performance. The instrument
should have a complete verification of specifications at least once every two
years.
CAUTION
Option 022 instruments have an angled-fiber output. Be sure to use an angledfiber patchcord during testing. If you do not have an angled-fiber patchcord
available, you can purchase the required accessories from Agilent
Technologies. These are the Agilent 81000SI DIN connector interface and the
Agilent 81113PC DIN 4108 (angled) to Super-PC patchcord.
5-18
Servicing
Performance Tests
Test 1. Total Output Power
Description
Total power is verified using the following devices:
• Power meter
The total power for each individual EELED installed in the Agilent 83437A is
measured. Because of internal couplers, the specified total power level
depends on the number and wavelength of any installed EELED sources.
Refer to Chapter 3, “Specifications and Regulatory Information” for the specified values.
Procedure
1 Connect a power meter to the Agilent 83437A’s front-panel OPTICAL OUT
connector.
2 If more than one EELED source is installed in the instrument, select one of the
rear-panel MODULATION INPUT connectors. Ensure that this connector is
unterminated. Terminate all other MODULATION INPUT connectors using BNC
shorts.
This step turns off all sources except the one that you selected.
3 Measure the total power of the EELED source.
4 Repeat Step 2 and Step 3 for each EELED source installed in the instrument.
5-19
Servicing
Performance Tests
Test 2. Peak Wavelength Accuracy
Description
Peak wavelength accuracy is verified using the following devices:
• Optical spectrum analyzer
Procedure
1 Connect an optical spectrum analyzer to the Agilent 83437A’s front-panel
OPTICAL OUT connector.
2 Use the optical spectrum analyzer’s marker functions to measure the peak
wavelength value of each EELED source installed in the Agilent 83437A.
5-20
Servicing
Performance Tests
Test 3. Power Stability
Description
Power stability is verified using the following devices:
• Power meter (> 30 dB return loss)
This test must be performed in a stable environment where the ambient temperature changes less than 1°C throughout the test.
Procedure
1 Turn on the Agilent 83437A and the power meter. Allow them to warm up for
one hour.
2 Connect a power meter to the Agilent 83437A’s front-panel OPTICAL OUT
connector.
3 Remove any BNC terminations on the rear-panel MODULATION INPUT connectors.
4 Configure the power meter to measure total drift in output power over 15
minutes. Start the test.
5 After 15 minutes have passed, the total output power should not have drifted
more than ±0.02 dB for 1310 nm, 1430 nm, and 1550 nm sources. For 1200 nm
and 1650 nm sources, total output power should not have drifted more than
±0.03 dB. Record the maximum drift on the following lines:
Maximum drift (15 minutes)
1310 nm, 1430 nm, and 1550 nm sources: ____________ dB
1200 nm and 1650 nm sources: ____________ dB
6 Configure the power meter to measure total drift in output power over 6 hours.
7 After 6 hours have passed, the total output power should not have drifted more
than ±0.05 dB. Record the maximum drift on the following line:
Maximum drift (6 hours): ____________ dB
5-21
Servicing
Adjustment Procedures
Adjustment Procedures
The Agilent 83437A has only one adjustment procedure, total power. Periodic
adjustment is not required to maintain safety.
CAUTION
Option 022 instruments have an angled-fiber output. Be sure to use an angledfiber patchcord during testing. If you do not have an angled-fiber patchcord
available, you can purchase the required accessories from Agilent
Technologies. These are the Agilent 81000SI DIN connector interface and the
Agilent 81113PC DIN 4108 (angled) to Super-PC patchcord.
To adjust total power
Description
The total power for each individual EELED installed in the Agilent 83437A is
adjusted by an associated potentiometer. Because of internal couplers, an
EELED’s specified power depends on the number and wavelength of EELED
sources installed. Tables are provided at the end of this procedure which provide proper total power values.
To adjust the output power of a particular EELED, you must first identify the
EELED’s position on the A2A2 board assembly. Then, you identify the associated LED Driver Board Assembly (A5 through A8) where the potentiometer is
located.
Procedure
1 Remove the instrument’s top and bottom covers.
2 Connect a power meter to the Agilent 83437A’s front-panel OPTICAL OUT
connector.
3 If more than one EELED source is installed in the instrument, select one of the
rear-panel MODULATION INPUT connectors. Ensure that this connector is
unterminated. Terminate all other MODULATION INPUT connectors with BNC
shorts.
This step turns off all sources except the one that you selected.
5-22
Servicing
Adjustment Procedures
4 Use the following figure to locate the EELED for the unterminated MODULATION
INPUT connector. The EELED is mounted to the left of identified jack. Table 5-6
on page 5-24 can be used to confirm that the correct EELED has been located.
5-23
Servicing
Adjustment Procedures
Table 5-6. EELED Wavelength Values
EELED Package Number
EELED Wavelength
1GE3/4409
1200 nm
1GE3/4410
1430 nm
1GE3/4411
1650 nm
1GE3/4412 or 1GE3/4402
1300 nm
1GE3/4413 or 1GE3/4403
1550 nm
5 Use the following figure to locate the associated LED Driver Board Assembly
(A5 through A8) where the potentiometer is located.
Assemblies A5 through A8 are identical with each assembly having a potentiometer labeled R18.
6 Locate R18 on the LED driver board assembly for the EELED.
7 Adjust potentiometer R18 on the LED driver board assembly for the proper
output power. Use Table 5-7 on page 5-26 to identify the correct power level
for your instrument’s configuration.
8 If the Agilent 83437A has more than one source installed, repeat Step 3
through Step 7 to adjust another source.
5-24
Servicing
Adjustment Procedures
5-25
Servicing
Adjustment Procedures
Table 5-7. Adjustment Power Values
Installed Options
002
003
Minimum Output Power (dBm)
004
005a
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
006
•
•
•
•
–17.0
–18.0
–13.0
–14.0
•
–14.0
–18.0
–13.0
–17.0
–18.0
–18.0
–17.0
–17.0
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
–21.0
–25.0
–17.0
–21.0
–21.0
–25.0
–21.0
–21.0
–21.0
–25.0
–21.0
–25.0
–25.0
–21.0
–25.0
1550 nm
Source
–17.0
–17.0
1650 nm
Source
–21.0
–17.0
–22.0
–18.0
–14.0
–18.0
–21.0
–21.0
–17.0
–18.0
–17.0
–18.0
–18.0
–18.0
–22.0
–22.0
–17.0
–21.0
–21.0
–21.0
–21.0
–18.0
–17.0
–18.0
–18.0
–18.0
–17.0
–21.0
–18.0
–21.0
–21.0
a. Option 005 deletes the 1550 nm source.
b. Specification remains the same value if the Option 001 1550 nm isolator is installed.
5-26
1430 nm
Source
–13.0b
–17.0
•
•
•
•
•
•
•
1300 nm
Source
•
•
•
•
•
•
•
•
•
•
1200 nm
Source
–21.0
–21.0
–22.0
–22.0
–18.0
–18.0
–25.0
–21.0
–21.0
–21.0
–18.0
–18.0
–22.0
Servicing
Replacing Instrument Assemblies
Replacing Instrument Assemblies
This section provides step-by-step procedures to remove and replace the
major instrument assemblies. These include the following procedures:
To remove the instrument cover 5-28
To replace the A2 Source assembly 5-28
To route the rear-panel BNC modulation cables
To replace line filter assembly FL1 5-32
To replace a cable clip 5-33
5-29
5-27
Servicing
Replacing Instrument Assemblies
To remove the instrument cover
1 Disconnect the power cord from the instrument.
2 Position the instrument so that you are looking at the rear panel.
3 Use a T-15 TORX driver to back out the screw that attaches the top cover to
the instrument.
4 Note that the screw is permanently secured to the cover.
5 After the screw is backed out, slide the cover toward the rear of the instrument
to remove the cover.
6 Remove the bottom cover using the same technique as used for the top cover.
7 Remove the two side covers.
To replace the A2 Source assembly
The A2 assembly, which includes A2A1, A2A2, A2A3, A2MP1, and A2MP2,
must be replaced as a complete unit. Individual components cannot be
repaired.
1 Remove the instrument’s top, bottom, and right-side covers.
2 Remove all cables attached to the A2A2 LED Modulation Board Assembly.
3 Remove the trim strip located on the top of the front frame.
4 Use a T-10 TORX driver to remove the six screws that secure the front panel
to the front frame. They are located along the top and bottom of the front
frame.
5 Gently move the front panel out to gain access to the back side of the frontpanel OPTICAL OUT connector. Unscrew the fiber-optic cable from the connector.
You may need to cut the cable tie that secures the line switch cable.
6 Be sure to cover the exposed end of the fiber-optic cable.
7 Use a T-10 TORX driver to remove the four screws securing the A2 assembly
to the instrument’s right-side frame.
8 Place the instrument on it’s right side.
9 Use a T-10 TORX driver to remove the three screws securing the A2 assembly
5-28
Servicing
Replacing Instrument Assemblies
to the bottom of the instrument’s main deck sheet metal assembly.
10 Remove the A2 assembly.
11 When installing the A2 assembly, observe the following points. Remember that
instrument options determine the number of sources and cables that attach to
the A2A2 assembly:
• Refer to “To route the rear-panel BNC modulation cables” on page 5-29 for
information on reconnecting the modulation cables to A2A2.
• The ribbon cables that connect to A2A2 can be connected in any order. The
lengths of these cables will usually dictate their position.
To route the rear-panel BNC modulation cables
The following figure shows the cable connections for each of the four possible
rear-panel BNC connectors. (The standard Agilent 83437A has only one cable.
Additional cables are supplied with options.) Each cable is connected to the
indicated jack on the A2A2 assembly. Note that the figure shows cable connections but not the paths. Regardless of the options installed in the instrument,
the rear-panel connectors should always be connected to these same jacks.
5-29
Servicing
Replacing Instrument Assemblies
5-30
Servicing
Replacing Instrument Assemblies
The figure below shows the correct path for the cables in the instrument. Be
sure to route these cables as shown.
5-31
Servicing
Replacing Instrument Assemblies
To replace line filter assembly FL1
Although replacing FL1 is straightforward, be sure to observe the following
points:
• Tighten the screws that attach FL1 to 6 in-lbs. Do not use the recommended
torque for M3 screws. Over tightening these screws will damage the line filter’s
flange.
• Observe the following warning about correct wire attachment. The wire color
codes in the figure refer to the following cable colors:
54 green/yellow
98 white/gray
918 white/brown/gray
WARNING
Be sure to solder the wires to FL1 in the correct positions as
shown in the following figure. Failure to attach these wires
correctly could result in damage to the instrument and injury
to the user.
5-32
Servicing
Replacing Instrument Assemblies
To replace a cable clip
Cable clips are used throughout the instrument to attach cables to sheet-metal
housings. They attach with self-adhesive bonds.
1 Remove the old clip.
2 Remove any remaining glue.
3 Clean the surface using isopropyl alcohol.
4 Remove the paper backing from the bottom of the new clip.
5 Press the clip firmly onto the surface.
5-33
Servicing
Replaceable Parts
Replaceable Parts
In this section, you’ll find figures that identify each mechanical and electrical
assembly in the instrument. An Agilent Technologies part number is provided
for each available part. The following identification figures are provided:
Table 5-8, “Major Assembies,” on page 5-36
Table 5-9, “Cable Assemblies,” on page 5-38
Table 5-10, “Front-Panel Parts,” on page 5-40
Table 5-11, “Rear-Panel Parts,” on page 5-42
Table 5-12, “Top and Bottom View Parts,” on page 5-44
Table 5-13, “Side View Parts,” on page 5-46
Table 5-14, “Instrument Cover Parts,” on page 5-46
Part ordering information
To order an assembly or mechanical part, quote the Agilent Technologies part
number, and indicate the quantity required. To order a part that is not listed,
include the following information with the order:
• Agilent 83437A model number
• Instrument serial number
• Description of where the part is located, what it looks like, and its function (if
known)
• Quantity needed
Parts can be ordered by addressing the order to the nearest Agilent Technologies office. Refer to “Agilent Technologies Service Offices” on page 4-5. Customers within the USA can also use either the direct mail-order system or the
direct phone-order system described below. The direct phone-order system
has a toll-free phone number available.
5-34
Servicing
Replaceable Parts
Direct mail-order system
Within the USA, Agilent Technologies can supply parts through a direct mailorder system. Advantages of using the system are as follows:
• Direct ordering and shipment from Agilent Technologies
• No maximum or minimum on any mail order. (There is a minimum order
amount for parts ordered through a local Agilent Technologies office when the
orders require billing and invoicing.)
• Prepaid transportation. (There is a small handling charge for each order.)
• No invoices
To provide these advantages, a check or money order must accompany each
order. Mail-order forms and specific ordering information are available
through your local Agilent Technologies office.
Direct phone-order system
The toll-free phone number, (800) 227-8164, is available Monday through Friday, 6 am to 5 pm (Pacific time). Regular orders have a 4-day delivery time.
5-35
Servicing
Replaceable Parts
Table 5-8. Major Assembies
Reference
Designator
HP Part
Number
Description
A1
A2
A2A1
A2A2
A2A3
A2A4
A2A5
A2A6
A3
A4
A5
A6
A7
A8
B1
FL1
54710-66512
—
—
—
—
—
—
—
83437-60012
0950-2293
83437-60010
83437-60010
83437-60010
83437-60010
83437-20006
9135-0270
Keyboard Assembly
Source Assembly (Not orderable, return A2 to HP)
Fiber Track Assembly (Not orderable, return A2 to HP)
LED Modulation Board Assembly (Not orderable, return A2 to HP)
EELED (Not orderable, return A2 to HP)
EELED (Not orderable, return A2 to HP)
EELED (Not orderable, return A2 to HP)
EELED (Not orderable, return A2 to HP)
Power Distribution Board Assembly
Power Supply Board Assembly
LED Driver Board Assembly #1
LED Driver Board Assembly #2
LED Driver Board Assembly #3
LED Driver Board Assembly #4
Fan Assembly
Line-Module Filter. Also part of W2
5-36
Servicing
Replaceable Parts
5-37
Servicing
Replaceable Parts
Table 5-9. Cable Assemblies
Reference
Designator
Agilent Part
Number
Description
W1
W2
W3
W4
W5
W6
W7
W8
W9
W10
W11
W12
W13
W14
W15
W16
W17
W18
W19
—
—
83437-60008
—
83437-60003
83437-60004
83437-60001
83437-60002
83437-60013
83437-60014
83437-60014
83437-60014
83437-60020
83437-60021
83437-60021
83437-60021
8120-5056
8120-5056
8120-5056
8120-5056
1252-7513
Input fiber optic cable (Part of A2 assembly)
Line switch cable (includes FL1 and LINE switch), to A4J1
A3J7 to B1 (Part of B1)
Power supply cable, A2A2J2 pin 5 to front-panel “LINE” LED indicator (green wire)
Power supply cable, A2A2J1 to front-panel “ACTIVE” LED and A1 assembly
Power distribution cable, A4J2 to A3J6
Modulation cable, A3J5 to A2A2J2
Driver #1 cable, 11 inches long, A3J1 to A5J2
Driver #2 cable (Option 002, 003, 004, and 006), 18.5 inches long, A3J2 to A6J2
Driver #3 cable (Option 002, 003, 004, and 006), 18.5 inches long, A3J3 to A7J2
Driver #4 cable (Option 002, 003, 004, and 006), 18.5 inches long, A3J4 to A8J2
Ribbon cable #1, A2A2J91 to A5J1
Ribbon cable #2, (Option 002, 003, 004, and 006), A2A2J92 to A6J1
Ribbon cable #3, (Option 002, 003, 004, and 006), A2A2J93 to A7J1
Ribbon cable #4, (Option 002, 003, 004, and 006), A2A2J94 to A8J1
SMB to BNC cable, 55.5 cm, rear-panel J1 to A2A2J21
SMB to BNC cable, 55.5 cm, rear-panel J2 to A2A2J11
SMB to BNC cable, 55.5 cm, rear-panel J3 to A2A2J31
SMB to BNC cable, 55.5 cm, rear-panel J4 to A2A2J41
Ribbon cable clip for W12, W13, W14, and W15.
5-38
Servicing
Replaceable Parts
5-39
Servicing
Replaceable Parts
Table 5-10. Front-Panel Parts
Item
Agilent Part
Number
Qty
Description
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
83437-00002
5021-8413
83437-00001
54714-41903
1990-1213
85680-40004
83437-20004
83410-20003
0515-0430
0535-0042
1400-0755
1400-0249
0380-0019
0590-0106
3050-0891
1
1
1
1
2
2
1
1
3
3
3
1
2
2
2
Front panel, dress
Front frame
Front subpanel
ACTIVE key
LED lamp IF=15 mA maximum
LED mount
LED spacer
Adapter
Screw with washer, TORX T10 Pan Head, M3 X 0.5, 6 mm long
Nut, hex PLSTC-LKG M3 X 0.5
Component clip 0.75 in x 0.75 in
Cable tie wrap
Spacer, round 0.188 IN LNG
Nut, hex PLSTC-LKG 2-56-THD
Washer, flat M3.0 3.3 mm inner diameter (not shown, fits between dress
panel and subpanel)
5-40
Servicing
Replaceable Parts
5-41
Servicing
Replaceable Parts
Table 5-11. Rear-Panel Parts
Item
Agilent Part
Number
Qty
Description
1
2
3
4
5
6
7
8
9
10
11
83437-00005
5021-5814
2110-0703
0515-2032
0535-0033
2190-0585
3050-0892
2950-0035
2190-0102
6960-0002
0515-0372
1
1
1
2
4
4
4
4
4
3
4
Rear panel, dress
Rear frame
Fuse, 6.3A 250V NTD FE IEC
Screw, TORX T10 Flat Head, M3 X 0.5, 8 mm long
Nut, hex M3.5 X 0.6
Washer, flat HLLC 3.6 mm inside diameter
Washer, flat MTLC 3.8 mm inside diameter
Nut, hex 15/32-32
Washer, lock 0.472" inside diameter
Hole plug for 0.5 inner diameter hole
Screw, TORX T10 Pan Head, M3 x 0.5, 8 mm long
5-42
Servicing
Replaceable Parts
5-43
Servicing
Replaceable Parts
Table 5-12. Top and Bottom View Parts
Item
Agilent Part
Number
Qty
Description
Screw, TORX T10 90° Flat Head, M3.5 x 0.6, 8mm long
Trim strip, top (not shown)
Ribbon cable clip
A2MP2, Sheet-metal optical deck (part of A2 assembly)
Sheet-metal power supply deck
Shield for A4 Power Supply
Component clip 0.75 in x 0.75 in
Cable tie wrap
A2MP1, LED heat sink (part of A2 assembly)
Fiber container lid (part of A2 assembly, not separately orderable)
Fiber container (part of A2 assembly, not separately orderable)
Fiber track (part of A2 assembly, not separately orderable)
Screw, TORX T10 Pan Head, M3 x 0.5, 28 mm long
Screw, TORX T15 Pan Head, M4 x 0.7,10 mm long
Screw, TORX T10 Pan Head, M3 x 0.5, 8 mm long
Screw (part of A2 assembly, not separately orderable)
1
0515-1400
6
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
5041-8803
1252-7513
83437-00004
83437-00008
86120-00011
1400-0755
1400-0249
—
—
—
—
0515-0830
0515-0380
0515-0372
—
1
8
1
1
1
2
1
1
1
1
1
2
4
14
8
5-44
Servicing
Replaceable Parts
5-45
Servicing
Replaceable Parts
Table 5-13. Side View Parts
Item
Agilent Part
Number
Qty
Description
1
2
3
4
5
6
7
5021-5831
5001-0538
0515-0458
0515-2086
0515-0377
1400-0249
—
2
2
10
8
4
1
5
Side frame
Trim strip, side (not shown)
Screw, TORX T10 Pan Head, M3.5 x 0.6, 8 mm long
Screw, TORX T15 Flat Head, M4 x 0.7, 7 mm long
Screw, TORX T10 Pan Head, M3.5 x 0.6, 10 mm long
Cable tie wrap
Screw (part of A2 assembly, not separately orderable)
Table 5-14. Instrument Cover Parts
Agilent Part
Number
Item
—
—
—
—
—
5062-3730
5062-3742
5062-3751
83437-00009
5041-8801
5-46
Qty
Description
1
1
1
1
4
Cover, top
Cover, bottom
Cover, left side
Cover, right side
Molded feet
Servicing
Replaceable Parts
5Servicing
Replaceable Parts
In this section, you’ll find figures that identify each mechanical and electrical
assembly in the instrument. An Agilent Technologies part number is provided
for each available part. The following identification figures are provided:
Table 5-15, “Major Assembies,” on page 5-49
Table 5-16, “Cable Assemblies,” on page 5-51
Table 5-17, “Front-Panel Parts,” on page 5-53
Table 5-18, “Rear-Panel Parts,” on page 5-55
Table 5-19, “Top and Bottom View Parts,” on page 5-57
Table 5-20, “Side View Parts,” on page 5-59
Table 5-21, “Instrument Cover Parts,” on page 5-59
Part ordering information
To order an assembly or mechanical part, quote the Agilent Technologies part
number, and indicate the quantity required. To order a part that is not listed,
include the following information with the order:
• Agilent 83437A model number
• Instrument serial number
• Description of where the part is located, what it looks like, and its function (if
known)
• Quantity needed
Parts can be ordered by addressing the order to the nearest Agilent Technologies office. Refer to “Agilent Technologies Service Offices” on page 4-5. Customers within the USA can also use either the direct mail-order system or the
direct phone-order system described below. The direct phone-order system
has a toll-free phone number available.
5-47
Servicing
Replaceable Parts
Direct mail-order system
Within the USA, Agilent Technologies can supply parts through a direct mailorder system. Advantages of using the system are as follows:
• Direct ordering and shipment from Agilent Technologies
• No maximum or minimum on any mail order. (There is a minimum order
amount for parts ordered through a local Agilent Technologies office when the
orders require billing and invoicing.)
• Prepaid transportation. (There is a small handling charge for each order.)
• No invoices
To provide these advantages, a check or money order must accompany each
order. Mail-order forms and specific ordering information are available
through your local Agilent Technologies office.
Direct phone-order system
The toll-free phone number, (800) 227-8164, is available Monday through Friday, 6 am to 5 pm (Pacific time). Regular orders have a 4-day delivery time.
5-48
Servicing
Replaceable Parts
Table 5-15. Major Assembies
Reference
Designator
HP Part
Number
Description
A1
A2
A2A1
A2A2
A2A3
A2A4
A2A5
A2A6
A3
A4
A5
A6
A7
A8
B1
FL1
54710-66512
—
—
—
—
—
—
—
83437-60012
0950-2293
83437-60010
83437-60010
83437-60010
83437-60010
83437-20006
9135-0270
Keyboard Assembly
Source Assembly (Not orderable, return A2 to HP)
Fiber Track Assembly (Not orderable, return A2 to HP)
LED Modulation Board Assembly (Not orderable, return A2 to HP)
EELED (Not orderable, return A2 to HP)
EELED (Not orderable, return A2 to HP)
EELED (Not orderable, return A2 to HP)
EELED (Not orderable, return A2 to HP)
Power Distribution Board Assembly
Power Supply Board Assembly
LED Driver Board Assembly #1
LED Driver Board Assembly #2
LED Driver Board Assembly #3
LED Driver Board Assembly #4
Fan Assembly
Line-Module Filter. Also part of W2
5-49
Servicing
Replaceable Parts
5-50
Servicing
Replaceable Parts
Table 5-16. Cable Assemblies
Reference
Designator
Agilent Part
Number
Description
W1
W2
W3
W4
W5
W6
W7
W8
W9
W10
W11
W12
W13
W14
W15
W16
W17
W18
W19
—
—
83437-60008
—
83437-60003
83437-60004
83437-60001
83437-60002
83437-60013
83437-60014
83437-60014
83437-60014
83437-60020
83437-60021
83437-60021
83437-60021
8120-5056
8120-5056
8120-5056
8120-5056
1252-7513
Input fiber optic cable (Part of A2 assembly)
Line switch cable (includes FL1 and LINE switch), to A4J1
A3J7 to B1 (Part of B1)
Power supply cable, A2A2J2 pin 5 to front-panel “LINE” LED indicator (green wire)
Power supply cable, A2A2J1 to front-panel “ACTIVE” LED and A1 assembly
Power distribution cable, A4J2 to A3J6
Modulation cable, A3J5 to A2A2J2
Driver #1 cable, 11 inches long, A3J1 to A5J2
Driver #2 cable (Option 002, 003, 004, and 006), 18.5 inches long, A3J2 to A6J2
Driver #3 cable (Option 002, 003, 004, and 006), 18.5 inches long, A3J3 to A7J2
Driver #4 cable (Option 002, 003, 004, and 006), 18.5 inches long, A3J4 to A8J2
Ribbon cable #1, A2A2J91 to A5J1
Ribbon cable #2, (Option 002, 003, 004, and 006), A2A2J92 to A6J1
Ribbon cable #3, (Option 002, 003, 004, and 006), A2A2J93 to A7J1
Ribbon cable #4, (Option 002, 003, 004, and 006), A2A2J94 to A8J1
SMB to BNC cable, 55.5 cm, rear-panel J1 to A2A2J21
SMB to BNC cable, 55.5 cm, rear-panel J2 to A2A2J11
SMB to BNC cable, 55.5 cm, rear-panel J3 to A2A2J31
SMB to BNC cable, 55.5 cm, rear-panel J4 to A2A2J41
Ribbon cable clip for W12, W13, W14, and W15.
5-51
Servicing
Replaceable Parts
5-52
Servicing
Replaceable Parts
Table 5-17. Front-Panel Parts
Item
Agilent Part
Number
Qty
Description
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
83437-00002
5021-8413
83437-00001
54714-41903
1990-1213
85680-40004
83437-20004
83410-20003
0515-0430
0535-0042
1400-0755
1400-0249
0380-0019
0590-0106
3050-0891
1
1
1
1
2
2
1
1
3
3
3
1
2
2
2
Front panel, dress
Front frame
Front subpanel
ACTIVE key
LED lamp IF=15 mA maximum
LED mount
LED spacer
Adapter
Screw with washer, TORX T10 Pan Head, M3 X 0.5, 6 mm long
Nut, hex PLSTC-LKG M3 X 0.5
Component clip 0.75 in x 0.75 in
Cable tie wrap
Spacer, round 0.188 IN LNG
Nut, hex PLSTC-LKG 2-56-THD
Washer, flat M3.0 3.3 mm inner diameter (not shown, fits between dress
panel and subpanel)
5-53
Servicing
Replaceable Parts
5-54
Servicing
Replaceable Parts
Table 5-18. Rear-Panel Parts
Item
Agilent Part
Number
Qty
Description
1
2
3
4
5
6
7
8
9
10
11
83437-00005
5021-5814
2110-0703
0515-2032
0535-0033
2190-0585
3050-0892
2950-0035
2190-0102
6960-0002
0515-0372
1
1
1
2
4
4
4
4
4
3
4
Rear panel, dress
Rear frame
Fuse, 6.3A 250V NTD FE IEC
Screw, TORX T10 Flat Head, M3 X 0.5, 8 mm long
Nut, hex M3.5 X 0.6
Washer, flat HLLC 3.6 mm inside diameter
Washer, flat MTLC 3.8 mm inside diameter
Nut, hex 15/32-32
Washer, lock 0.472" inside diameter
Hole plug for 0.5 inner diameter hole
Screw, TORX T10 Pan Head, M3 x 0.5, 8 mm long
5-55
Servicing
Replaceable Parts
5-56
Servicing
Replaceable Parts
Table 5-19. Top and Bottom View Parts
Item
Agilent Part
Number
Qty
Description
Screw, TORX T10 90° Flat Head, M3.5 x 0.6, 8mm long
Trim strip, top (not shown)
Ribbon cable clip
A2MP2, Sheet-metal optical deck (part of A2 assembly)
Sheet-metal power supply deck
Shield for A4 Power Supply
Component clip 0.75 in x 0.75 in
Cable tie wrap
A2MP1, LED heat sink (part of A2 assembly)
Fiber container lid (part of A2 assembly, not separately orderable)
Fiber container (part of A2 assembly, not separately orderable)
Fiber track (part of A2 assembly, not separately orderable)
Screw, TORX T10 Pan Head, M3 x 0.5, 28 mm long
Screw, TORX T15 Pan Head, M4 x 0.7,10 mm long
Screw, TORX T10 Pan Head, M3 x 0.5, 8 mm long
Screw (part of A2 assembly, not separately orderable)
1
0515-1400
6
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
5041-8803
1252-7513
83437-00004
83437-00008
86120-00011
1400-0755
1400-0249
—
—
—
—
0515-0830
0515-0380
0515-0372
—
1
8
1
1
1
2
1
1
1
1
1
2
4
14
8
5-57
Servicing
Replaceable Parts
5-58
Servicing
Replaceable Parts
Table 5-20. Side View Parts
Item
Agilent Part
Number
Qty
Description
1
2
3
4
5
6
7
5021-5831
5001-0538
0515-0458
0515-2086
0515-0377
1400-0249
—
2
2
10
8
4
1
5
Side frame
Trim strip, side (not shown)
Screw, TORX T10 Pan Head, M3.5 x 0.6, 8 mm long
Screw, TORX T15 Flat Head, M4 x 0.7, 7 mm long
Screw, TORX T10 Pan Head, M3.5 x 0.6, 10 mm long
Cable tie wrap
Screw (part of A2 assembly, not separately orderable)
Table 5-21. Instrument Cover Parts
Agilent Part
Number
Item
—
—
—
—
—
5062-3730
5062-3742
5062-3751
83437-00009
5041-8801
Qty
Description
1
1
1
1
4
Cover, top
Cover, bottom
Cover, left side
Cover, right side
Molded feet
5-59
Index
A
ac power cables, 1-8, 4-4
accessories, 4-2
accuracy, wavelength, 2-4
ACTIVE key, 1-9
adapters
fiber optic, 4-3
adjusted procedures
total power, 5-22
adjustment procedures, 5-22
Agilent offices, 4-5
Agilent product notes, 2-5
ambient light suppression, 2-8
amplifiers, optical, 2-5
angled output fiber, 1-5
patchcord for, 4-2
assemblies, instrument, 5-6
B
BNC short, 2-3, 4-2
broadband stimulus, 2-4
C
cabinet, cleaning, vi, 1-2
cables
clip, replacing, 5-33
internal, 5-8, 5-38, 5-51
line power, 4-4
calibration cycle, 3-2, 5-18
care
of cabinet, vi, 1-2
of fiber optics, iv
characteristics, 3-3
characterize, passive device, 2-6
classification
laser, iv, 3-8
product, vi, 1-2
cleaning
adapters, 2-20
cabinet, vi, 1-2
fiber-optic connections, 2-11, 2-19
non-lensed connectors, 2-19
compressed dust remover, 2-18
connector
care, 2-11
correction factors, 2-4
cotton swabs, 2-18
D
damaged shipment, 1-4
declaration of conformity, 3-8
deep-notch filters, 2-4
digital modulation, 2-3
dimensions of instrument, 3-7
dust caps, 2-19
DWDM, 2-4, 2-5
E
edge emitting LED, iii
ESD (electrostatic discharge)
static-safe work station, 5-11
F
fan assembly, 5-6
fiber optics
adapters, 4-3
care of, iv
cleaning connections, 2-11
compatible fiber, 3-5
connectors, covering, 1-11
FL1 (line filter assembly), 5-32
foam swabs, 2-18
front panel
adapters, 4-3
fuse
checking, 1-6, 5-17
drawer, 1-6, 5-17
extra, 1-6, 5-17
part number, 1-6
type, 1-6, 5-17
values, vi
H
humidity, 3-2, 3-7
I
IEC Publication 61010-1, vi
input
connector, 2-11
Index-1
Index
inspecting
instrument, 1-4
installing, 1-2
instrument
cover, removing, 5-28
rear view, v
returning for service, 1-10
options, instrument, 1-5, 4-2
ordering parts, 5-34, 5-47
P
laser
aperture, iv
classification, iv, 3-8
LED classification, 3-7
LINE key, 1-9
line-power
cable, 1-7, 4-4
cables, 4-4
filter assembly, replacing, 5-32
input connector, 1-6, 5-17
requirements, 1-7
specifications, 3-3, 3-5, 3-7
packaging for shipment, 1-11
parts
bottom of instrument, 5-46, 5-59
cables, 5-38, 5-51
mail order, 5-35, 5-48
major assemblies, 5-6
ordering, 5-34, 5-47
phone order, 5-35, 5-48
replacing, 5-27, 5-34, 5-47
side of instrument, 5-46, 5-59
top of instrument, 5-40, 5-42, 5-44, 5-53,
5-55, 5-57
patchcord, 4-2
performance tests, 5-18
peak wavelength accuracy, 5-20
power stability, 5-21
total output power, 5-19
polarization, 2-4
power supply, troubleshooting, 5-16
problems. See troubleshooting
product notes, 2-5, 2-8
M
R
measurement
accuracy, 1-3
ambient light suppression, 2-8
deep-notch filters, 2-4
DWDM, 2-4
stimulus response, 2-4
modulation, iii, 2-3, 3-5
frequency, 2-3, 2-9
TTL compatible, 2-3
rack mounting requirements, 1-2
radiation exposure, iv
rear panel
labels, v
MODULATION INPUT connector, 2-3
regulatory information, 3-8
replaceable parts, 5-34, 5-47
replacement procedures, 5-27
A2 source assembly, 5-28
cable clip, 5-33
instrument cover, 5-28
line filter assembly, 5-32
modulation cables, 5-29
return loss
output specification, 3-5
returning for service, 1-10
K
keyboard assembly, 5-6
L
N
noise declaration, 3-8
O
optical amplifiers, 2-5
OPTICAL OUT connector, iv, 1-3
optical spectrum analyzer, 2-4, 2-8
Index-2
Index
S
safety, iv, vi
laser classification, vi, 1-2
sales and service offices, 4-5
serial number instrument, 1-4
service, 1-10
returning for, 1-10
sales and service offices, 4-5
shipping
damage, 1-4
procedure, 1-10
specifications, 3-2, 3-3
definition of terms, 3-2
general, 3-3, 3-5
operating, 3-3, 3-5, 3-7
stimulus-response measurements, 2-4, 2-6
suppression, ambient light, 2-8
swabs, 2-18
T
temperature range, 3-2
tools for servicing, 5-4
TORX drivers, 5-5
troubleshooting, 1-9, 5-2, 5-12
low power, 5-13
power supply, 5-16
turning output off, 2-3
V
ventilation requirements, 1-2
W
wavelength accuracy, 2-4
weight, 3-7
wires, internal, 5-16, 5-32
Index-3
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