Tektronix OA 5000 Series User manual

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User Manual
OA 5000 Series
Optical Attenuators
070-7612-06
www.tektronix.com
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Copyright ©Tektronix, Inc. All rights reserved.
Tektronix products are covered by U.S. and foreign patents, issued and pending. Information in this publication supercedes
that in all previously published material. Specifications and price change privileges reserved.
Tektronix, Inc., P.O. Box 500, Beaverton, OR 97077
TEKTRONIX and TEK are registered trademarks of Tektronix, Inc.
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WARRANTY
Tektronix warrants that the products that it manufactures and sells will be free from defects in materials and
workmanship for a period of one (1) year from the date of shipment. If a product proves defective during this
warranty period, Tektronix, at its option, either will repair the defective product without charge for parts and labor,
or will provide a replacement in exchange for the defective product.
In order to obtain service under this warranty, Customer must notify Tektronix of the defect before the expiration
of the warranty period and make suitable arrangements for the performance of service. Customer shall be
responsible for packaging and shipping the defective product to the service center designated by Tektronix, with
shipping charges prepaid. Tektronix shall pay for the return of the product to Customer if the shipment is to a
location within the country in which the Tektronix service center is located. Customer shall be responsible for
paying all shipping charges, duties, taxes, and any other charges for products returned to any other locations.
This warranty shall not apply to any defect, failure or damage caused by improper use or improper or inadequate
maintenance and care. Tektronix shall not be obligated to furnish service under this warranty a) to repair damage
resulting from attempts by personnel other than Tektronix representatives to install, repair or service the product;
b) to repair damage resulting from improper use or connection to incompatible equipment; c) to repair any
damage or malfunction caused by the use of non-Tektronix supplies; or d) to service a product that has been
modified or integrated with other products when the effect of such modification or integration increases the time
or difficulty of servicing the product.
THIS WARRANTY IS GIVEN BY TEKTRONIX IN LIEU OF ANY OTHER WARRANTIES, EXPRESS
OR IMPLIED. TEKTRONIX AND ITS VENDORS DISCLAIM ANY IMPLIED WARRANTIES OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. TEKTRONIX’
RESPONSIBILITY TO REPAIR OR REPLACE DEFECTIVE PRODUCTS IS THE SOLE AND
EXCLUSIVE REMEDY PROVIDED TO THE CUSTOMER FOR BREACH OF THIS WARRANTY.
TEKTRONIX AND ITS VENDORS WILL NOT BE LIABLE FOR ANY INDIRECT, SPECIAL,
INCIDENTAL, OR CONSEQUENTIAL DAMAGES IRRESPECTIVE OF WHETHER TEKTRONIX OR
THE VENDOR HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES.
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EC Declaration of Conformity
We
Tektronix UK Ltd.
The Arena
Downshire Way
Bracknell, RG12 1PU
declare under sole responsibility that the
OA5000 Series Optical Attenuators
OA5002, OA5012, OA5022, and OA5032
Including the OCP5502 Power Module
meet the intent of Directive 89/336/EEC for Electromagnetic Compatibility and
Low Voltage Directive 73/23/EEC for Product Safety.
Compliance was demonstrated to the following specifications as listed in the Official
Journal of the European Communities:
EMC Directive 89/336/EEC:
EN 61326 EMC requirements for Class A electrical equipment for
measurement, control, and laboratory use
IEC 61000--4--2 Electrostatic Discharge Immunity
(Performance Criterion B)
IEC 61000--4--2 RF Electromagnetic Field Immunity
(Performance Criterion A)
IEC 61000--4--2 Electrical Fast Transient / Burst Immunity
(Performance Criterion B)
IEC 61000--4--2 Power Line Surge Immunity
(Performance Criterion B)
IEC 61000--4--2 RF Conducted Immunity
(Performance Criterion A)
IEC 61000--4--2 Power Line Voltage Fluctuation Immunity
(Performance Criterion B)
EN 61000--3--2 AC Power Line Harmonic Emissions
This product meets the essential requirements in Annes 1 of the
Low Voltage Directive 73/23/EEC, amended by 93/68/EEC:
EN 61010--1/A1 Safety requirements for electrical equipment for
measurement, control, and laboratory use
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OA 5000 Series User Manual i
Welcome
Congratulations on your purchase of an OA 5000 Series Optical Attenuator.
The OA 5000 Series Optical Attenuators are high-performance instruments
used to attenuate optical signals. The OA 5000 Series consists of four instru-
ments, the OA 5002, OA 5012, OA 5022, and OA 5032. The major difference
between the models is the optical fiber connection. The OA 5002 is used
with single-mode fiber; the OA 5012, with 50 m multimode fiber; the
OA 5022, with 62.5 m multimode fiber; and the OA 5032, with 100 mfiber.
Some of the outstanding characteristics of the OA 5000 Series are:
HAttenuation to 60 dB — the OA 5000 can attenuate signals up to 60 dB
in steps of 0.01 dB. A shutter provides greater than 100 dB attenuation
for the OA 5002, OA 5012, and OA 5022. The shutter provides greater
than 90 dB attenuation for the OA 5032.
H600 nm to 1700 nm calibrated spectral response in one unit.
HLinear response within ±0.05 dB.
HAbility to store attenuation levels, which is useful for repeat measure-
ments.
HGPIB Programmable — the OA 5000 Series conforms to IEEE Std 488.2.
HModels for both Single and Multimode Fiber.
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Welcomeii
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OA 5000 Series User Manual iii
Contents
Welcome i...................................................
Contents iii...................................................
List of Figures vii..............................................
List of Tables viii...............................................
Safety ix......................................................
A Quick Tour
Installation 1-1.................................................
Removing the OA 5000 1-2..................................
A Quick Tour 1-3...............................................
Preset the OA 5000 1-3......................................
Storing and Recalling Settings 1-4...........................
Setting a Reference Value 1-5................................
User Reference
Operator Overview 2-1..........................................
The User Reference Section 2-1.............................
Enabling/Disabling Attenuation 2-3..............................
Setting Attenuation Levels 2-5...................................
Specifying the Wavelength 2-5...............................
Setting the Attenuation Level 2-6.............................
Setting the Attenuation Level to Minimum 2-7.................
Setting the GPIB Address 2-9...................................
Setting the Reference Level 2-11.................................
Measuring Insertion Loss 2-12................................
Approximating Signal Power 2-13.............................
Storing and Recalling
Attenuation Levels 2-15......................................
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Welcomeiv
Programming
Setting Up the Instrument 3-1...................................
Controllers 3-1.............................................
Using the GPIB Interface 3-1.................................
Command Syntax 3-5...........................................
Clearing the OA 5000 3-5....................................
Command and Query Structure 3-6..........................
Command Entry 3-8.........................................
Argument Types 3-10.........................................
Syntax Diagrams 3-11........................................
Commands 3-13.................................................
Common Commands and Queries 3-13........................
Device Commands and Queries 3-14..........................
ADJusting? (Query Only) 3-15................................
ALLev? (Query Only) 3-15....................................
ATTenuation 3-16............................................
BLRN 3-17...................................................
*CAL? (Query Only) 3-18.....................................
*CLS (No Query Form) 3-18..................................
DESE 3-19...................................................
DISable 3-20................................................
DISPlay 3-20................................................
*ESE 3-21...................................................
*ESR? (Query Only) 3-22.....................................
EVEnt? (Query Only) 3-22....................................
EVMSG? (Query Only) 3-23...................................
EVQty? (Query Only) 3-23....................................
FACTORY (No Query Form) 3-24..............................
HEADer 3-25................................................
*IDN? (Query Only) 3-26.....................................
*LRN? or SET? 3-26..........................................
*OPC 3-27...................................................
*PSC 3-27...................................................
RECall (No Query Form) 3-28.................................
REFerence 3-29..............................................
*RST (No Query Form) 3-29..................................
*SRE 3-30...................................................
*STB? (Query Only) 3-31.....................................
STORe (Store Attenuation) 3-31...............................
*TST? (Query Only) 3-32.....................................
VERBOSE 3-33..............................................
*WAI (No Query Form) 3-34...................................
WAVelength 3-34.............................................
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OA 5000 Series User Manual v
Status and Events 3-35..........................................
Registers 3-35...............................................
Queues 3-39.................................................
Event Handling Sequence 3-39................................
Conflicts 3-40................................................
Messages 3-41..............................................
Appendices
Appendix A: Accessories A-1....................................
Standard Accessories A-1...................................
Optional Accessories A-1....................................
Appendix B: Specifications A-3..................................
Appendix C: Interface Specifications A-7.........................
Interface Messages A-7.....................................
Character Set (ASCII Chart) A-8..............................
GPIB Function Subsets A-9..................................
Appendix D: Using the *OPC Query/Command A-11................
Appendix E: Packing for Shipment A-13...........................
Appendix F: Maintenance A-15....................................
Cleaning the Optical Ports A-15...............................
Changing the Optical Port Connectors A-17....................
Appendix G: Product Verification A-21.............................
Equipment List A-21..........................................
Power Up A-22...............................................
Display Modes A-23..........................................
GPIB Address Setting A-24...................................
Attenuation Range A-24......................................
Shutter Attenuation and the DISABLE button A-25..............
1310 nm: Insertion Loss, Attenuation Accuracy, and
Repeatability A-26........................................
1550 nm: Insertion Loss, Attenuation Accuracy, and
Repeatability A-28........................................
850 nm (except A5002): Insertion Loss, Attenuation
Accuracy, and Repeatability A-29..........................
Appendix H: Replaceable Parts A-31..............................
Parts Ordering Information A-31...............................
Using the Replaceable Parts List A-31.........................
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Welcomevi
Index
Index I-1......................................................
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OA 5000 Series User Manual vii
List of Figures
Figure 1-1: Installing the OA 5000 into the Power Module 1-2.........
Figure 1-2: OA 5002 Front Panel 1-4..............................
Figure 2-1: OA 5002 Front Panel 2-2..............................
Figure 2-2: The Location of the DISABLE Button 2-3................
Figure 2-3: Setting Attenuation Levels 2-5..........................
Figure 2-4: The Location of the ADDR (SET) Button 2-9..............
Figure 2-5: The Location of the SET REF Button 2-11.................
Figure 2-6: The Location of the STORE and RECALL Buttons 2-15.....
Figure 3-1: GPIB Connector Location 3-2..........................
Figure 3-2: Typical GPIB Network Configurations 3-2................
Figure 3-3: Command Message Elements 3-6......................
Figure 3-4: Block Argument Example 3-10..........................
Figure 3-5: Typical Syntax Diagrams 3-11...........................
Figure 3-6: The Standard Event Status Register (SESR) 3-35..........
Figure 3-7: The Status Byte Register (SBR) 3-36.....................
Figure 3-8: The Device Event Status Enable Register (DESER) 3-37....
Figure 3-9: The Event Status Enable Register (ESER) 3-38............
Figure 3-10: The Service Request Enable Register (SRER) 3-38.......
Figure 3-11: Status and Event Handling Process 3-40................
Figure A-1: Removing the Optical Bulkhead Connector A-16..........
Figure A-2: FC Optical Bulkhead Assembly A-17.....................
Figure A-3: ST Optical Bulkhead Assembly A-18.....................
Figure A-4: DIN 47256 Optical Bulkhead Assembly A-18..............
Figure A-5: SC Optical Bulkhead Assembly A-19.....................
Figure A-6: OA 5000 Replaceable Parts A-33........................
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Welcomeviii
List of Tables
Table 3-1: BNF Symbols and Meanings 3-5........................
Table 3-2: Command Message Elements 3-6......................
Table 3-3: Comparison of Header On and Off Responses 3-7.........
Table 3-4: Commands Common to All GPIB Devices and
Supported by the OA 5000 Series 3-13.........................
Table 3-5: OA 5000 Device Commands and Parameters 3-14.........
Table 3-6: FACTORY Front Panel Settings 3-24......................
Table 3-7: Results from *TST? 3-32................................
Table 3-8: SESR Bit Functions 3-36................................
Table 3-9: SBR Bit Functions 3-37..................................
Table 3-10: No Event Messages 3-41...............................
Table 3-11: Command Error Messages —CME Bit 5 3-41............
Table 3-12: Execution Error Messages —EXE Bit 4 3-42.............
Table 3-13: Device Error Messages —DDE Bit 3 3-43................
Table 3-14: System Event Messages —QYE Bit 2 3-43...............
Table 3-15: Execution Warning Messages —EXE Bit 4 3-43..........
Table A-1: Optical Characteristics A-3.............................
Table A-2: Mechanical Characteristics A-4..........................
Table A-3: Environmental Performance A-4........................
Table A-4: OA 5000 Standard Interface Messages A-7..............
Table A-5: The ASCII Character Set A-8............................
Table 4-1: Equipment Required for Performance Verification A-21......
Table 4-2: Attenuation Accuracy at 1310 nm A-27....................
Table 4-3: Attenuation Accuracy at 1550 nm A-29....................
Table 4-4: Attenuation Accuracy at 850 nm A-30.....................
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OA 5000 Series User Manual ix
Safety
You might be eager to begin using your OA 5000, but please take a moment
to review these safety precautions. They are provided for your protection
and to prevent damage to the Optical Attenuator. This safety information
applies to all operators and service personnel.
These two terms appear in manuals:
Hstatements identify conditions or practices that could result in
damage to the equipment or other property.
Hstatements identify conditions or practices that could result in
personal injury or loss of life.
These two terms appear on equipment:
HCAUTION indicates a personal injury hazard not immediately accessible
as one reads the marking, or a hazard to property including the equip-
ment itself.
HDANGER indicates a personal injury hazard immediately accessible as
one reads the marking.
This symbol appears in manuals:
Static-Sensitive Devices
These symbols appear on equipment:
DANGER
High Voltage
Protective
ground (earth)
terminal
ATTENTION
Refer to
manual
Symbols and Terms
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Safetyx
Observe all of these precautions to ensure your personal safety and to
prevent damage to either the OA 5000 or equipment connected to it.
Optical Output
WARNING
To prevent damage to your eyes, avoid looking into the optical
output port while there is an optical signal connected to the input
port. Even if the OA 5000 is switched off, light can pass through the
attenuator. Always attach the output port to a receiver before attach-
ing the source signal to the input port.
Power Source
The OA 5000 is designed for operation in a Tektronix TM 5000 Series Power
Module or the right-hand slot of an Tektronix OCP 5502. To ensure safe
operation, follow all precautions listed in the instrument’s Operators Manual.
Do not attempt to operate the OA 5000 with any other power source.
Grounding the Optical Attenuator
The OA 5000 is grounded through the power module. To avoid electric
shock, plug the power module power cord into a properly wired receptacle
where earth ground has been verified by a qualified service person.
Without the protective ground connection, all parts of the OA 5000 are
potential shock hazards. This includes knobs and controls that may appear
to be insulators.
Use the Proper Power Cord
Use only the power cord and connector specified for your TM 5000 Series
Power Module. Use only a power cord that is in good condition.
Use the Proper Fuse
To avoid fire hazard, use only the fuse specified in the parts list for your
TM 5000 Series Power Module, and which is identical in type, voltage rating,
and current rating.
Do Not Remove Covers or Panels
To avoid personal injury, do not operate the OA 5000 or TM 5000 Series
Power Module without the panels or covers.
Specific Precautions
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OA 5000 Series User Manual xi
Do Not Operate in Explosive Atmospheres
The OA 5000 provides no explosion protection from static discharges or
arcing components. Do not operate the OA 5000 in an atmosphere of explo-
sive gasses.
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Safetyxii
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A Quick Tour
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