Agilent Technologies 83433A User manual

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Agilent83433A
Lightwave Transmitter
User’s Guide

ii
© Copyright
Agilent Technologies 2000
All Rights Reserved. Repro-
duction, adaptation, or trans-
lation without prior written
permission is prohibited,
except as allowed under copy-
right laws.
Agilent Part No. 83433-90001
Printed in USA
February 2000
Agilent Technologies
Lightwave Division
1400 Fountaingrove Parkway
Santa Rosa, CA 95403-1799,
USA
[phone]
Notice.
The information contained in
this document is subject to
change without notice. Com-
panies, names, and data used
in examples herein are ficti-
tious unless otherwise noted.
Agilent Technologies makes
no warranty of any kind with
regard to this material, includ-
ing but not limited to, the
implied warranties of mer-
chantability and fitness for a
particular purpose. Agilent
Technologies shall not be lia-
ble for errors contained herein
or for incidental or conse-
quential damages in connec-
tion with the furnishing,
performance, or use of this
material.
Restricted Rights Legend.
Use, duplication, or disclo-
sure by the U.S. Government
is subject to restrictions as set
forth in subparagraph (c) (1)
(ii) of the Rights in Technical
Data and Computer Software
clause at DFARS 252.227-7013
for DOD agencies, and sub-
paragraphs (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 war-
ranted against defects in
material and workmanship for
a period of one year from date
of shipment. During the war-
ranty period, Agilent Technol-
ogies 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 desig-
nated by Agilent Technolo-
gies. Buyer shall prepay
shipping charges to Agilent
Technologies and Agilent
Technologies shall pay ship-
ping 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 war-
rants that its software and
firmware designated by Agi-
lent Technologies for use with
an instrument will execute its
programming instructions
when properly installed on
that instrument. Agilent Tech-
nologies does not warrant that
the operation of the instru-
ment, or software, or firmware
will be uninterrupted or error-
free.
Limitation of Warranty.
The foregoing warranty shall
not apply to defects resulting
from improper or inadequate
maintenance by Buyer, Buyer-
supplied software or interfac-
ing, unauthorized modifica-
tion 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 dis-
claims 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-
gies shall not be liable for any
direct, indirect, special, inci-
dental, or consequential dam-
ages, whether based on
contract, tort, or any other
legal theory.
Safety Symbols.
CAUTION
The caution sign denotes a
hazard. It calls attention to a
procedure which, if not cor-
rectly performed or adhered
to, could result in damage to
or destruction of the product.
Do not proceed beyond a cau-
tion sign until the indicated
conditions are fully under-
stood and met.
WARNING
The warning sign denotes a
hazard. It calls attention to a
procedure which, if not cor-
rectly 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 man-
ual symbol. The prod-
uct 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 posi-
tions of the instrument
power line switch.
❍The OFF symbols
are used to mark the
positions of the instru-
ment power line
switch.
The CE mark is a reg-
istered trademark of
the European Commu-
nity.
The CSA mark is a reg-
istered trademark of
the Canadian Stan-
dards Association.
The C-Tick mark is a
registered trademark
of the Australian Spec-
trum Management
Agency.
This text denotes the
instrument is an
Industrial Scientific
and Medical Group 1
Class A product.
Typographical Conven-
tions.
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 instru-
ment’s screen.
Display type for words or
characters displayed on the
computer’s screen or instru-
ment’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.
ISM1-A

iii
General Safety Considerations
General Safety Considerations
This product has been designed and tested in accordance with IEC Publica-
tion 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 83433A 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 Do not, under any circumstances, look into the optical output or any
fiber/device attached to the output while the laser is in operation.
WARNING Do not enable the laser when no fiber or equivalent device is attached
to the OPTICAL OUTPUT connector.
WARNING For continued protection against fire hazard, replace line fuse only
with same type and ratings (5x20 mm,1.6 A, 250 V time-delay, low
braking capacity fuse). The use of other fuses or materials is
prohibited.

iv
General Safety Considerations
CAUTION This product is designed for use in Installation Category II and Pollution
Degree 2 per IEC 61010-1 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 “GENERAL SPECIFICATIONS”on page 4-3. Damage to the
equipment could result.
CAUTION This instrument has autoranging line voltage input. Be sure the supply voltage
is within the specified range.
Measurement accuracy—it’s up to you!
Fiber-optic connectors are easily damaged when connected to dirty or damaged cables
and accessories. The Agilent 83433A front-panel OPTICAL INPUT connector is no excep-
tion. 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 83433A, refer to “Cleaning Con-
nections for Accurate Measurements” on page 3-6.

v
General Safety Considerations
Laser classification
The Agilent 83433A is classified as an IEC LASER Class 3B according to
IEC 825-1:1999-11, and an FDA LASER class 3B according to 21CFR 1040.10. The total
power of light energy radiated out of the LASER OUT connector is 8.5 to 11 dBm. Opera-
tor precautions are necessary to maintain safety. The Agilent 83433A contains no user
serviceable parts. Removal of covers may result in hazardous radiation exposure.

vi
The Agilent 83433A—At a Glance
The Agilent 83433A—At a Glance
The Agilent 83433A lightwave transmitter is based on a lithium niobate modu-
lator driven by an internal CW DFB 1552.52 nm laser. The laser and modulator
are inter-connected externally with a PMF fiber. The modulator can also be
used with an external laser with polarization maintaining fiber such as the Agi-
lent 8164A, with 81680A option 071.
The Agilent 83433A is designed to produce high fidelity, low jitter waveforms
for 2.488 Gb/s STM-16/OC-48, 9.953 Gb/s STM-64/OC-192 and other transmis-
sion rates up through 10.7 Gb/s. The Agilent 83433A is intended for BER test-
ing with error performance analyzers such as the Agilent 71612B. The Mach-
Zehnder modulator is adjusted for a fixed zero chirp. Its output waveform pro-
duces a minimum extinction ratio of 12 dB.
The internal DFB laser can be modulated at frequencies from 15 kHz to
10 MHz to increase linewidth for SBS suppression or channel identification
applications. The internal laser wavelength can be adjusted ±1.25 nm around
the 1552.52 center wavelength.
The Agilent 83433A can be combined with the Agilent 83434A 10 Gb/s light-
wave receiver to create a complete optical link for system or fiber testing, or to
form a basis for substitution testing of commercial transmitters and receivers.

Contents
Contents-1
The Agilent 83433A—At a Glance vi
1Getting Started
2Using the Agilent 83433A
Front-Panel Features 2-2
Rear-Panel Features 2-4
Using a Laser Source 2-5
Performing a Quick Confidence Check 2-6
Connecting the Agilent 83433A to a Bit-Error-Ratio Test Set 2-9
Connecting the Agilent 83433A to an Oscilloscope 2-11
3Reference
Options 3-2
Replacement Parts 3-3
Front-Panel Fiber-Optic Adapters 3-4
Power Cords 3-5
Cleaning Connections for Accurate Measurements 3-6
Returning the Instrument for Service 3-17
Agilent Technologies Service Offices 3-20
4Specifications and Regulatory Information
Agilent 83433A Specifications and Characteristics 4-3
Regulatory Information 4-6

1
Step 1. Inspect the Shipment 1-3
Step 2. Check the Fuse 1-5
Step 3. Connect the Line-Power Cable 1-6
Step 4. Turn on the Agilent 83433A 1-8
Step 5. Avoid costly repairs 1-9
Step 6. Learn more about our products 1-10
Getting Started

1-2
Getting Started
Setting Up the Agilent 83433A
Setting Up the Agilent 83433A
The instructions in this chapter show you how to install your lightwave trans-
mitter. After you’ve completed this chapter, continue with Chapter 2, “Using
the Agilent 83433A”. Refer to Chapter 3, “Reference”for the following addi-
tional information:
•Tips on avoiding costly repairs by proper optical connection cleaning
techniques.
•Lists of available accessories and power cords.
•Instructions on returning your instrument to Agilent Technologies for service.
•Agilent Technologies Sales and Service Offices.
Chapter 4, “Specifications and Regulatory Information”contains information
on operating conditions, such as temperature.

1-3
Getting Started
Setting Up the Agilent 83433A
Step 1. Inspect the Shipment
NOTE The Agilent 83433A is supplied with an optical jumper cable. To avoid costly
replacement, do not misplace this cable.
❒Inspect the shipping container for damage.
❒Inspect the instrument.
❒Verify that you received the options and accessories you ordered.
Keep the shipping container and cushioning material until you have inspected
the contents of the shipment for completeness and have checked the light-
wave transmitter mechanically and electrically.
The lightwave transmitter is packed within a carton. Refer to “Returning the
Instrument for Service”on page 3-16, for the description and part numbers of
the packaging materials. Refer to “Options”on page 3-2, for the accessories
shipped with the lightwave transmitter.
If the shipping materials are in good condition, retain them for possible future
use. You may wish to ship the lightwave transmitter to another location or
return it to Agilent Technologies for service. Refer to “Returning the Instru-
ment for Service”on page 3-16.

1-4
Getting Started
Setting Up the Agilent 83433A
If anything is missing or defective, or if the lightwave transmitter does not
pass the verification test, contact your nearest Agilent Technologies Sales
Office. If the shipment was damaged, contact the carrier, then contact the
nearest Agilent Technologies Sales Office. Keep the shipping materials for the
carrier’s inspection. The Agilent Sales Office will arrange for repair or replace-
ment at Agilent Technologies’option without waiting for claim settlement.
Serial numbers
Agilent Technologies makes frequent improvements to its products to
enhance their performance, usability, or reliability, and to control costs. Agi-
lent service personnel have access to complete records of design changes to
each type of equipment, based on the equipment’s serial number. Whenever
you contact Agilent about your lightwave transmitter, have the complete serial
number available to ensure obtaining the most complete and accurate infor-
mation possible.
A serial-number label is attached to the rear of the lightwave transmitter. It
contains the serial number and the options installed in the lightwave transmit-
ter. Whenever you specify the serial number or refer to it in obtaining informa-
tion about your lightwave transmitter, be sure to use the complete number.

1-5
Getting Started
Setting Up the Agilent 83433A
Step 2. Check the Fuse
1Locate the line-input connector on the instrument’s rear panel.
2Disconnect the line-power cable if it is connected.
3Use a small flat-blade screwdriver to pry open the fuse holder door.
4The fuse is housed in a small container. Insert the tip of a screwdriver on the
side of the container and gently pull outward to remove the container. A spare
fuse is stored below the line fuse.
WARNING For continued protection against fire hazard, replace line fuse only
with same type and ratings (5×20 mm,1.6 A, 250 V time-delay, low
breaking capacity fuse). The use of other fuses or materials is
prohibited.

1-6
Getting Started
Setting Up the Agilent 83433A
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.
1Verify 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

1-7
Getting Started
Setting Up the Agilent 83433A
2Connect the line-power cord to the rear-panel connector of the instrument.
3Connect the other end of the line-power cord to the power receptacle.
Various power cables are available to connect the Agilent 83433A to ac power
outlets unique to specific geographic areas. The cable appropriate for the area
to which the Agilent 83433A 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 3-5.
Voltage nominal: 115 VAC range: 90–132 V
nominal: 230 VAC range: 98–254 V
Frequency nominal: 50 Hz/60 Hz range: 47–63 Hz
Line Power Requirements

1-8
Getting Started
Setting Up the Agilent 83433A
Step 4. Turn on the Agilent 83433A
•Press the front-panel LINE key. All front-panel LED’s will light momentarily. The
line power indicator will remain lit.
NOTE The front panel LINE switch disconnects the mains circuit from the mains supply after
the EMC filters and before other parts of the instrument.
If the Agilent 83433A fails to turn on properly, consider the following possibili-
ties:
❒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 3-17.

1-9
Getting Started
Setting Up the Agilent 83433A
Step 5. Avoid costly repairs
CAUTION Fiber-optic connectors are easily damaged when connected to dirty or
damaged cables and accessories. The front-panel connectors of the
Agilent 83433A are 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 83433A, refer to “Cleaning Connections for Accurate
Measurements”on page 3-6.
CAUTION For proper operation without an external laser, connect the supplied optical
jumper cable between the EXTERNAL LASER INPUT and the CLASS IIIB
INTERNAL LASER OUT. Be sure to position the LASER ENABLE key in the off
position before making any connection. Agilent recommends the use of Panda
PMF fiber with the EXTERNAL LASER INPUT.

1-10
Getting Started
Setting Up the Agilent 83433A
Step 6. Learn more about our products
To learn more about this or any Agilent Technologies product, visit our web-
site at http://www.agilent.com.
To learn more about Fiber Optic Test Equipment, go to the Agilent Technolo-
gies home page listed above, and follow this path:
1Click Products.
2Click Test and Measurement.
3Under Products, click Fiber Optic Test Equipment.
This path will take you to the Fiber Optic Test Equipment page.
Or you can enter the URL for this page directly:
http://www.tm.agilent.com/tmo/Products/English/FiberOpticTestEquipment.html

2
Front-Panel Features 2-2
Rear-Panel Features 2-4
Using a Laser Source 2-5
Performing a Quick Confidence Check 2-6
Connecting the Agilent 83433A to a Bit-Error-Ratio Test Set 2-9
Connecting the Agilent 83433A to an Oscilloscope 2-11
Using the Agilent 83433A