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Agilent 83437A User`s Manual

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1. A3 A2A1 A2A6 A2A5 A2A4 A2A2 3 Bottom Internal rptbaref 5 7 Servicing General Information Table 5 4 Cable Assemblies Description Designator 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 WA 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 42 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 A2A2J1 W18 SMB to BNC cable rear panel J3 to A2A2J31 W19 SMB to BNC cable rear panel J4 to A2A2J4 5 8 Servicing General Information Top Internal WI W17 W12 W8 WS W7 W10 Wa W4 W19 W18 W16 W5 W6 W11 W9 W15 W14 W13 W12
2. Item ot Oty Description 1 83437 00005 1 Rear panel dress 2 5021 5814 1 Rear frame 3 2110 0703 1 Fuse 6 3A 250V NTD FE IEC 4 0515 2032 2 Screw TORX T10 Flat Head M3 X 0 5 8 mm long 5 0535 0033 4 Nut hex M3 5 X 0 6 6 2190 0585 4 Washer flat HLLC 3 6 mm inside diameter 7 3050 0892 4 Washer flat MTLC 3 8 mm inside diameter 8 2950 0035 4 Nut hex 15 32 32 9 2190 0102 4 Washer lock 0 472 inside diameter 10 6960 0002 3 Hole plug for 0 5 inner diameter hole 11 0515 0372 4 Screw TORX T10 Pan Head M3 x 0 5 8 mm long 5 42 Servicing Replaceable Parts Rear Internal N rprear 5 43 Servicing Replaceable Parts Table 5 12 Top and Bottom View Parts Item e Oty Description 1 0515 1400 6 Screw TORX T10 90 Flat Head M3 5 x 0 6 8mm long 2 5041 8803 1 Trim strip top not shown 3 1252 7513 8 Ribbon cable clip 4 83437 00004 1 A2MP2 Sheet metal optical deck part of A2 assembly 5 83437 00008 1 Sheet metal power supply deck 6 86120 00011 1 Shield for A4 Power Supply 7 1400 0755 2 Component clip 0 75 in x 0 75 in 8 1400 0249 1 Cable tie wrap 9 1 A2MP1 LED heat sink part of A2 assembly 0 1 Fiber container lid part of A2 assembly not separately orderable 1 1 Fiber container part of A2 assembly not separately orderable 2 1 Fiber track part of A2 assembly not separately orderable 3 0515 083
3. Bottom Internal ne W13 W9 W14 W10 W15 W11 rptbwire 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 Building Ground 1 Meg Ohm Resistor 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 WARNING Servicing Electrostatic Discharge Information To ensure user safety the static safe accessories must provide at least 1 MQ of isolation from ground Refer to Table 5 5 on page 5 11 for information on ordering static safe accessories 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 Description Number P 9300 0797 3M static control mat 0 6 m x 1 2 m 2 ftx 4 ft and 4 6 cm 15 ft ground wire The wrist strap and wrist strap cord are not included They must be ordered
4. CAUTION CAUTION CAUTION CAUTION CAUTION CAUTION General Safety Considerations 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 This product is designed for use in Installation Category II and Pollution Degree 2 per IEC 1010 and 664 respectively 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 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 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 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 Getting Started Step 1 Inspect the Shipment 1 4 Step 2 Check the Fuse 1 6
5. 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 Rear Internal 5 32 fF C N E 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 Remove the old clip Remove any remaining glue Clean the surface using isopropyl alcohol Remove the paper backing from the bottom of the new clip 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 Cove
6. 5 dBm Operator main tenance or precautions are not necessary to maintain safety No controls adjustments or performance of procedures result in hazardous radiation exposure Optical Out zis Ani 83437A ux Agilent BROADBAND LIGHT SOURCE OPTICAL 925mm iv The Agilent 83437A At a Glance ki H MODULATION INPUT COMPLIES with LINE TTL LEVELS 1040 10 AND 1640 9011151230 240V 50 WATTS 50 60 Hz 1310nm 1650nm OLE Opt 006 004 002 1430nm SER SERVICEABLE PARTS Now WARNING INSDE REFER SERVICING UALIFIED PERSONNEL TA Manufactured June 99 Opt 006 004 002 60786 VO VSOu VINVS NoIlVHHdO WAVMLHOIT 097090968 N S S3SIOO IONHOWL LNATIOV Sjueuodwoo ubTe10g pue or4seucp jo YSN UT Spe Installed Serial Options Number rlabels Rear view of instrument WARNING WARNING WARNING WARNING WARNING 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 maint
7. CJ Check the rear panel MODULATION INPUT connectors If a BNC short is con nected to one of these jacks the output for the associated EELED is turned off Perform the adjustment procedure To adjust total power on page 5 22 For instrument s with multiple EELEDs use the procedure to locate the EE LEDs 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 For the EELED with the low power locate its associated LED Driver Board Assembly as explained in the adjustment procedure Perform the procedure To check an LED Driver Board Assembly on page 5 14 Perform the procedure To check the AZA2 LED Modulation Board Assembly on page 5 15 5 18 Servicing Troubleshooting To check an LED Driver Board Assembly All of the A5 through A8 LED Driver Board Assemblies are identical 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 inthe assembly The following list shows each wire color its color code and the voltages present e Red 2 wire 15V White red 92 wire 45V Violet 7 wire 15V Black 0 wire ground White black 90 wire ground Located the two indicator LEDs green DS1 and yellow DS2 on the LED Driver Board Assembly If the green LED is on the current sou
8. 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 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 Specifications and Regulatory Information Specifications 3 3 Regulatory Information 3 8 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 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 Step 1 Inspect the Shipment 1 4 Step 2 Check the Fuse 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 WARNING CAUTION CAUTION CAUTION 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 Mea surements Refer to Chapter 3 Specifications and Regulatory Information for informa tion
9. indicated jack on the A2A2 assembly Note that the figure shows cable connec tions 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 Top Internal J41 J31 J21 J11 hee a is IE EG tem Un Ale Ay Jal 6 16 jo kilos Rear Internal rptrmoc 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 Top Internal W16 17 18 19 5 16 e 5 6 rptwire 5 81 Servicing Replacing Instrument Assemblies To replace line filter assembly FL1 Although replacing FL1 is straightforward be sure to observe the following points e Tighten the screws that attach FLI to 6 in Ibs Do not use the recommended torque for M3 screws Over tightening these screws will damage the line filter s flange
10. Corporation Commerce California 90001 Air Cap looks like a plastic sheet filled with air bubbles Use the pink antistatic Air Cap M to reduce static electricity Wrapping the instrument several times in this ma terial 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 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 ambientlight 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 834374 These examples use your Agilent 834374 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 834374 2 2 Making Measurements Modulating the Output Light Modulating the Output Light The rear panel of t
11. Item 0 Oty Description 5062 3730 1 Cover top 5062 3742 1 Cover bottom 5062 3751 1 Cover left side 83437 00009 1 Cover right side 5041 8801 4 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 0 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 connection
12. connected 3 Use a small flat blade screwdriver to open the pull out fuse drawer fused The recommended fuse is an IEC 127 5x20 mm 6 3A 250 V Agilent Technol ogies 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 CAUTION 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 Informa tion as the performance standard AII 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 5 20 Test 3 Power Stability 5 21 Calibration Cycle This instrument requires periodic verification of performance The instrument should have a complete verification of specifications at least once every two years Option 022 instruments have an angled fiber output Be sure to use an angled fiber patchcord during testing If you do not have an angled fiber patchcord available you can purchase the required a
13. degradation and clean every connec tor 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 indica tion 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 pro duce a good return loss measurement The quality of the polish establishes the difference between the PC physical contact and the Super PC con nectors 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 con nection If you test your cables and accessories for insertion loss and return loss upon receipt and retain the
14. 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 con nectors 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 WARNING CAUTION 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 imperfec tions not touching the fiber core may not affect performance unless the imperfections keep the fibers from contacting 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 f
15. on operating conditions such as temperature If you should ever need to clean the cabinet use a damp cloth only 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 This product has autoranging line voltage input Be sure the supply voltage is within the specified range 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 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 excep tion When you use improper cleaning and handling techniques you risk expensive i
16. the front panel ACTIVE key to turn the light output on and off If the Agilent 834374 fails to turn on properly consider the following possibili ties e Is the line fuse good Doesthe line socket have power sit 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 instru ment 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 possi ble 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 Technolo gies 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 mainte nance plan Agilent Techn
17. 0 2 Screw TORX T10 Pan Head M3 x 0 5 28 mm long 4 0515 0380 4 Screw TORX T15 Pan Head M4 x 0 7 10 mm long 5 0515 0372 14 Screw TORX T10 Pan Head M3 x 0 5 8 mm long 6 8 Screw part of A2 assembly not separately orderable 5 44 Servicing Replaceable Parts Top Internal rptbharc 5 45 Servicing Replaceable Parts Table 5 13 Side View Parts Item m Oty Description 1 5021 5831 2 Side frame 2 5001 0538 2 Trim strip side not shown 3 0515 0458 10 Screw TORX T10 Pan Head M3 5 x 0 6 8 mm long 4 0515 2086 8 Screw TORX T15 Flat Head MA x 0 7 7 mm long 5 0515 0377 4 Screw TORX T10 Pan Head M3 5 x 0 6 10 mm long 6 1400 0249 1 Cable tie wrap 7 5 Screw part of A2 assembly not separately orderable 8 places 4 places 6 places 5 places rpside Table 5 14 Instrument Cover Parts Item MU Oty Description 5062 3730 1 Cover top 5062 3742 1 Cover bottom 5062 3751 1 Cover left side 83437 00009 1 Cover right side 5041 8801 4 Molded feet 5 46 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 provide
18. 10 nm EELED source installed 004 430 nm EELED source installed 005 Delete 1550 nm EELED source 006 650 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 WARNING Getting Started Step 2 Check the Fuse Step 2 Check the Fuse 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 fusedr Verify that the value of the line voltage fuse in the pull out drawer is correct The recommended fuse is an IEC 127 5x20 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 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 inst
19. 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 R 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 Index 2 5 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 Index 3
20. Agilent 83437A Broadband Light Source User s Guide Ay Agilent Technologies O Copyright 2000 Agilent Technologies 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 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 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 Gi 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 Agile
21. 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 Fri day 6 am to 5 pm Pacific time Regular orders have a 4 day delivery time 5 48 Table 5 15 Major Assembies Servicing Replaceable Parts Reference HP Part Description Designator Number Al 54710 66512 Keyboard Assembly A2 Source Assembly Not orderable return A2 to HP A2A1 Fiber Track Assembly Not orderable return A2 to HP A2A2 LED Modulation Board Assembly Not orderable return A2 to HP A2A3 EELED Not orderable return A2 to HP A2A4 EELED Not orderable return A2 to HP A245 EELED Not orderable return A2 to HP A2A6 EELED Not orderable return A2 to HP A3 83437 60012 Power Distribution Board Assembly A4 0950 2293 Power Supply Board Assembly A5 83437 60010 LED Driver Board Assembly 1 A6 83437 60010 LED Driver Board Assembly 2 A7 83437 60010 LED Driver Board Assembly 3 A8 83437 60010 LED Driver Board Assembly 4 B1 83437 20006 Fan Assembly FL1 9135 0270 Line Module Filt
22. B to BNC cable 55 5 cm rear panel J4 to A2A2J41 1252 7513 Ribbon cable clip for W12 W13 W14 and W15 5 38 Servicing Replaceable Parts Top Internal WI W17 W12 W8 W3 W7 W10 Wa W4 W19 W18 W16 W5 W6 W11 W9 W15 W14 W13 W12 Bottom Internal ue W13 W9 W14 W10 W15 W11 rptbwire 5 39 Servicing Replaceable Parts Table 5 10 Front Panel Parts Item Ka Oty Description 1 83437 00002 1 Front panel dress 2 5021 8413 1 Front frame 3 83437 00001 1 Front subpanel 4 54714 41903 1 ACTIVE key 5 1990 1213 2 LED lamp IF215 mA maximum 6 85680 40004 2 LED mount 7 83437 20004 1 LED spacer 8 83410 20003 1 Adapter 9 0515 0430 3 Screw with washer TORX T10 Pan Head M3 X 0 5 6 mm long 10 0535 0042 3 Nut hex PLSTC LKG M3 X 0 5 11 1400 0755 3 Component clip 0 75 in x 0 75 in 12 1400 0249 1 Cable tie wrap 13 0380 0019 2 Spacer round 0 188 IN LNG 14 0590 0106 2 Nut hex PLSTC LKG 2 56 THD 15 3050 0891 2 Washer flat M3 0 3 3 mm inner diameter not shown fits between dress panel and subpanel 5 40 Servicing Replaceable Parts Front View 1 2 pH 83437A WE Agilent BROADBAND LIGHT SOURCE W2 Front Internal 5 41 Servicing Replaceable Parts Table 5 11 Rear Panel Parts
23. EDs installed Option 003 RL 38 8B dEn FSENS 64 dBm Em IPS 7 7 jp VAR OPTICAL OUT START 1PHB B nm STOP 17BH H nm RB 1 nm UB P kHz ST21 sec Characteristic spectrum with three EELEDs Options 003 and 004 3 6 RL 38 HH dBm Specifications and Regulatory Information Specifications RSENS 70 dom 5 BG dB D U EXE mE OPTICAL OUT START 12HB H nm RB i nm YB PHH Hz STOP 1758 4 nm STz1B sec Characteristic spectrum with four EELEDs Operating Specifications Options 003 004 and 006 Use Indoor 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 Altitude Up to 15 000 feet 4 572 meters Operating temperature 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 LED Classification IEC LED Class 1 according to IEC 60825 Weight 5 5 kg 12 Ib Dimensions H x W x D 102 x 213 x 450 mm 4 02 x 8 39 x 17 72 in System chassis half module 3 5 height 1 75 hole spacing 3 7 Specifications and Regulatory Information Regulator
24. KG 2 56 THD 15 3050 0891 2 Washer flat M3 0 3 3 mm inner diameter not shown fits between dress panel and subpanel 5 53 W2 Servicing Replaceable Parts Front View 1 Xe Agilent 83437A BROADBAND LIGHT SOURCE Front Internal 5 54 Table 5 18 Rear Panel Parts Servicing Replaceable Parts Agilent Part Item Number Oty Description 1 83437 00005 1 Rear panel dress 2 5021 5814 1 Rear frame 3 2110 0703 1 Fuse 6 3A 250V NTD FE IEC 4 0515 2032 2 Screw TORX T10 Flat Head M3 X 0 5 8 mm long 5 0535 0033 4 Nut hex M3 5 X 0 6 6 2190 0585 4 Washer flat HLLC 3 6 mm inside diameter 7 3050 0892 4 Washer flat MTLC 3 8 mm inside diameter 8 2950 0035 4 Nut hex 15 32 32 9 2190 0102 4 Washer lock 0 472 inside diameter 10 6960 0002 3 Hole plug for 0 5 inner diameter hole 11 0515 0372 4 Screw TORX T10 Pan Head M3 x 0 5 8 mm long 5 55 Servicing Replaceable Parts Rear Internal rprear 5 56 Table 5 19 Top and Bottom View Parts Servicing Replaceable Parts Agilent Part Item Number Oty Description 1 0515 1400 6 Screw TORX T10 90 Flat Head M3 5 x 0 6 8mm long 2 5041 8803 1 Trim strip top not shown 3 1252 7513 8 Ribbon cable clip 4 83437 00004 1 A2MP2 Sheet metal optical deck par
25. N 50082 1 1992 0 5 kV Sig Lines 1 kV Power Lines Supplementary Information These product herewith complies with the requirements of the Low Voltage Directive 73 23 EEC and the EMC Directive 89 336 EEC and carries the CE marking accordingly 6 4 Dixon Browder Quality Manager Santa Rosa California USA 13 June 1996 European Contact Your local Hewlett Packard Sales and Service Office or Hewlett Packard GmbH Department ZQ Standards Europe Herrenberger Strasse 130 D 71034 B blingen Germany FAX 49 7031 14 3143 3 9 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 022 002 200 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 50Q short m for rear panel MODULATION INPUT connectors Di
26. UTION Description Procedure Servicing Adjustment Procedures Adjustment Procedures The Agilent 834374 has only one adjustment procedure total power Periodic adjustment is not required to maintain safety Option 022 instruments have an angled fiber output Be sure to use an angled fiber 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 The total power for each individual EELED installed in the Agilent 834374 is adjusted by an associated potentiometer Because of internal couplers an EELEDS s specified power depends on the number and wavelength of EELED sources installed Tables are provided at the end of this procedure which pro vide 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 associ ated LED Driver Board Assembly A5 through A8 where the potentiometer is located Remove the instrument s top and bottom covers Connect a power meter to the Agilent 83437A s front panel OPTICAL OUT connector 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 untermina
27. ain the product in a safe condition 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 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 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 No operator serviceable parts inside Refer servicing to qualified personnel To prevent electrical shock do not remove covers 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 line voltage fuse is correct For 100 120V operation use an IEC 127 5x20 mm 0 315 A 250 V Agilent part number 2110 0449 For 220 240V operation use an IEC 127 5x20 mm 0 16 A 250 V Agilent Technologies part number 2110 0448 vi
28. as shown in Figure 2 3 Staking Groove Fixing oper Secondary Staking Active Centering Tun gsten Carbide Nickel Silver CuNifZn Hard Case Soft center 4 125 um Fiber Centered to abou 02 microns 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 um This process plus the keyed axis allows very precise core to core alignments This connector is found on most Agilent Technologies lightwave instruments 2 18 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 mini mize 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 contamina tion will cause loss of signal and increased reflections resulting in poor return loss Inspecting Connectors Because fiber optic c
29. blies 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 5 29 To replace line filter assembly FL1 5 32 To replace a cable clip 3 5 27 Servicing Replacing Instrument Assemblies To remove the instrument cover Disconnect the power cord from the instrument Position the instrument so that you are looking at the rear panel Use a T 15 TORX driver to back out the screw that attaches the top cover to the instrument 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 Remove the two side covers Ae WwW d m To replace the A2 Source assembly The A2 assembly which includes AZA1 A2A2 A2A3 A2MPI and A2MP2 must be replaced as a complete unit Individual components cannot be repaired Remove the instrument s top bottom and right side covers Remove all cables attached to the A2A2 LED Modulation Board Assembly Remove the trim strip located on the top of the front frame Use a T 10 TORX driver to remove the six screws that secure the front panel to the front frame They are locat
30. ccessories from Agilent Technologies These are the Agilent 8100051 DIN connector interface and the Agilent 81113PC DIN 4108 angled to Super PC patchcord 5 18 Description Procedure Servicing Performance Tests Test 1 Total Output Power Total power is verified using the following devices Power meter The total power for each individual EELED installed in the Agilent 834374 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 speci fied values Connect a power meter to the Agilent 83437 A s front panel OPTICAL OUT connector 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 Repeat Step 2 and Step 3 for each EELED source installed in the instrument 5 19 Description Procedure Servicing Performance Tests Test 2 Peak Wavelength Accuracy Peak wavelength accuracy is verified using the following devices Optical spectrum analyzer Connect an optical spectrum analyzer to the Agilent 83437A s front panel OPTICAL OUT connector Use the optical s
31. ces 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 unpolar ized 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 wave length 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 spec trum analyzer measures wavelength in air unless you change its settings 2 4 Making Measurements Performing Stimulus Response Measurements Optical Spectrum Analyzer Broadband e Light Source Polarization Controller Tunable Laser Source fig8 Characterizing an optical amplifier In addition to the measurement described in this section the Agilent 83437A i
32. d 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 Technolo gies office Refer to Agilent Technologies Service Offices on page 4 5 Cus tomers 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 mail order 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
33. d 006 A2A2J92 to A6J1 W14 83437 60021 Ribbon cable 3 Option 002 003 004 and 006 A2A2J93 to A7J1 W15 83437 60021 Ribbon cable 4 Option 002 003 004 and 006 A2A2J94 to A8J1 W16 8120 5056 SMB to BNC cable 55 5 cm rear panel J1 to A2A2J21 W17 8120 5056 SMB to BNC cable 55 5 cm rear panel J2 to A2A2J11 W18 8120 5056 SMB to BNC cable 55 5 cm rear panel J3 to A2A2J31 W19 8120 5056 SMB to BNC cable 55 5 cm rear panel J4 to A2A2J41 1252 7513 Ribbon cable clip for W12 W13 W14 and W15 5 51 Servicing Replaceable Parts Top Internal WI W17 W12 W8 WS W7 W10 Wa W4 W19 W18 W16 W5 W6 W11 W9 W15 W14 W13 W12 Bottom Internal Mis W13 W9 W14 W10 W15 W11 rptbwire 5 52 Table 5 17 Front Panel Parts Servicing Replaceable Parts Agilent Part Item Nuniber Oty Description 1 83437 00002 1 Front panel dress 2 5021 8413 1 Front frame 3 83437 00001 1 Front subpanel 4 54714 41903 1 ACTIVE key 5 1990 1213 2 LED lamp IF 15 mA maximum 6 85680 40004 2 LED mount 7 83437 20004 1 LED spacer 8 83410 20003 1 Adapter 9 0515 0430 3 Screw with washer TORX T10 Pan Head M3 X 0 5 6 mm long 10 0535 0042 3 Nut hex PLSTC LKG M3 X 0 5 11 1400 0755 3 Component clip 0 75 in x 0 75 in 12 1400 0249 1 Cable tie wrap 13 0380 0019 2 Spacer round 0 188 IN LNG 14 0590 0106 2 Nut hex PLSTC L
34. dical UL544 96 244 Black Taiwan 8120 2104 Straight SEV1011 79 200 int Gray Switzerland 8120 2296 1959 24507 79 200 int Gray Type 12 90 8120 2956 Straight DHCK107 79 200 int Gray Denmark 8120 2957 90 79 200 int Gray 250V 8120 4211 Straight SABS164 79 200 Jade Gray Republic of South 8120 4600 90 79 200 Africa India 100V 8120 4753 Straight MITI 90 230 Dark Gray Japan 8120 4754 90 90 230 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 272 1 3 sy 138 Russia 1 095 797 3930 Spain 34 91 631 1213 Sweden 08 5064 8700 Switzerland 01 735 7200 U
35. e summary of safety considerations at the front of this manual 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 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 The power cord is connected to internal capacitors that may remain live for five seconds after disconnecting the plug from its power supply 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 834374 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 Refe
36. ed along the top and bottom of the front frame Gently move the front panel out to gain access to the back side of the front panel 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 Usea 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 Usea T 10 TORX driver to remove the three screws securing the A2 assembly 5 28 10 11 Servicing Replacing Instrument Assemblies to the bottom of the instrument s main deck sheet metal assembly Remove the A2 assembly When installing the AZ assembly observe the following points Remember that instrument options determine the number of sources and cables that attach to the A2A2 assembly e Refer to To route the rear panel BNC modulation cables on page 5 29 for information on reconnecting the modulation cables to A2A2 e The ribbon cables that connect to AZA2 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
37. er Also part of W2 5 49 Servicing Replaceable Parts Top Internal A4 A5 B1 ANS Se E Y JA A3 A2A1 A2A6 A2A5 A2A4 A2A2 A2A3 FL1 lol lei Jol kihe Bottom Internal rptbaref 5 50 Table 5 16 Cable Assemblies Servicing Replaceable Parts Reference Agilent Part Description Designator Number w1 Input fiber optic cable Part of A2 assembly W2 83437 60008 Line switch cable includes FL1 and LINE switch to A4J1 W3 A3J7 to B1 Part of B1 WA 83437 60003 Power supply cable A2A2J2 pin 5 to front panel LINE LED indicator green wire W5 83437 60004 Power supply cable A2A2J1 to front panel ACTIVE LED and A1 assembly W6 83437 60001 Power distribution cable A4J2 to A3J6 W7 83437 60002 Modulation cable A3J5 to A2A2J2 W8 83437 60013 Driver 1 cable 11 inches long A3J1 to A5J2 W9 83437 60014 Driver 2 cable Option 002 003 004 and 006 18 5 inches long A3J2 to A6J2 W10 83437 60014 Driver 3 cable Option 002 003 004 and 006 18 5 inches long A3J3 to A7J2 W11 83437 60014 Driver 4 cable Option 002 003 004 and 006 18 5 inches long A3J4 to A8J2 W12 83437 60020 Ribbon cable 1 A2A2J91 to A5J1 W13 83437 60021 Ribbon cable 2 Option 002 003 004 an
38. factor in making a good lightwave measure ment is the selection of the fiber optic connector The differences in connec tor 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 Making Measurements Cleaning Connections for Accurate Measurements tions take repeatability uncertainty into account e Will a connector degrade the return loss too much or will a fusion splice be re quired For example many DFB lasers cannot operate wit
39. h reflections from connectors Often as much as 90 dB isolation is needed Connecting Body and Ferrule 2 5 mm Mechanical Retainer Fiber 125 um actual fiber s diameter is smaller than a human hair Alignment Key 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 perform ing connector it represents a good compromise between performance reli ability 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 Agi lent 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
40. he instrument is equipped with a MODULATION INPUT connec tor for each installed source You can use these connectors to digitally modu late 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 cir cuitry for each MODULATION INPUT connector 5V 5V 74aci 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 834374 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 devi
41. ically 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 A 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 n O The OFF symbols are used to mark the p
42. ng 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 1 o Figure 2 4 Clean problem free fiber end and ferrule 22 5 ma k Ee Figure 2 5 Dirty fiber end and ferrule from poor cleaning 2 15 Making Measurements Cleaning Connections for Accurate Measurements lt ERES A 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 con nectors 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 co
43. nited Kingdom United States Canada 01 344 366666 800 403 0801 4 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 4 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 8 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 WARNING WARNING WARNING WARNING Servicing Servicing Servicing In this chapter you ll find information on troubleshooting testing perfor mance adjusting and replacing parts in the instrument Safety first Before servicing the Agilent 834374 familiarize yourself with the safety mark ings on the instrument and the safety instructions in this manual This instru ment 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 th
44. nstrument 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 rear panel 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 AGILENT TECHNOLOGIES S N US36060162 LIGHTWAVE OPERATION SANTA ROSA CA 95403 Made in USA of domestic and foreign components 1 4 Table 1 1 Agilent 83437A Options Getting Started Step 1 Inspect the Shipment Option Description 001 550 nm isolator offered only with standard instrument or Option 022 002 200 nm EELED source installed 003 3
45. nt 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 834374 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 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 83437A refer to Cleaning Con nections 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
46. nt Procedures Top Internal 0 Lj e hl be T G 0 9 N 6 E L rptbr1E 5 25 Table 5 7 Adjustment Power Values Installed Options Servicing Adjustment Procedures Minimum Output Power dBm 1200 nm 1300 nm 1430 nm 1550 nm 1650 nm 004 005 000 Source Source Source Source Source 13 0 17 0 21 0 17 0 17 0 17 0 18 0 17 0 22 0 13 0 14 0 18 0 14 0 14 0 18 0 18 0 21 0 13 0 17 0 21 0 18 0 17 0 18 0 18 0 18 0 18 0 22 0 17 0 17 0 17 0 18 0 22 0 21 0 17 0 25 0 21 0 21 0 17 0 21 0 21 0 21 0 21 0 21 0 25 0 18 0 21 0 22 0 21 0 17 0 21 0 18 0 22 0 21 0 18 0 18 0 25 0 18 0 18 0 25 0 21 0 17 0 25 0 21 0 21 0 25 0 18 0 21 0 18 0 21 0 21 0 21 0 25 0 21 0 18 0 22 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 Servicing Replacing Instrument Assem
47. nt 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 specif
48. ntinued 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 fi ber end does not touch the outside of the mating connector or adapter e 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 connec tors 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 con nector possible Replace connecting cables regularly Frequently measure the return loss of the connector to check for
49. oam swab to clean optical fiber ends Foam swabs can leave filmy deposits on fiber ends that can degrade performance 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 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 Clean the fiber end with the swab or lens paper Do mot scrub during this initial cleaning because grit can be caught in the swab and become a gouging element Immediately dry the fiber end with a clean dry lint free cotton swab or lens paper 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 CAUTION Making Measurements Cleaning Connections for Accurate Measurements 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 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 con nector again Often a second cleaning will restore proper performance The second cleaning should be m
50. ocal Agilent Technologies office Direct phone order system The toll free phone number 800 227 8164 is available Monday through Fri day 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 HP Part Description Designator Number Al 54710 66512 Keyboard Assembly A2 Source Assembly Not orderable return A2 to HP A2A1 Fiber Track Assembly Not orderable return A2 to HP A2A2 LED Modulation Board Assembly Not orderable return A2 to HP A2A3 EELED Not orderable return A2 to HP A2A4 EELED Not orderable return A2 to HP A245 EELED Not orderable return A2 to HP A2A6 EELED Not orderable return A2 to HP A3 83437 60012 Power Distribution Board Assembly A4 0950 2293 Power Supply Board Assembly A5 83437 60010 LED Driver Board Assembly 1 A6 83437 60010 LED Driver Board Assembly 2 A7 83437 60010 LED Driver Board Assembly 3 A8 83437 60010 LED Driver Board Assembly 4 B1 83437 20006 Fan Assembly FL1 9135 0270 Line Module Filter Also part of W2 5 36 Top Internal A3 A2A1 A2A6 A2A5 A2A4 A2A2 A2A3 Bottom Internal 5 6 lei Jol Alo Servicing Replaceable Parts rptbaref 5 37 Table 5 9 Cable Assemblie
51. of the instrument The dis tinction between these terms is described as follows Specifications describe warranted performance over the temperature range 0 C to 45 C and relative humidity 9596 unless otherwise noted All speci fications apply after the instrument s temperature has been stabilized after 15 minutes of continuous operation Characteristics provide useful information by giving functional but nonwar ranted performance parameters Characteristics are printed n 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 1200 nm 1310 nm 1430 nm 1550 nm 1650 nm Source Source Source Source Source Peak wavelength 1200 nm 30 nm 1310 520 1430nm 30nm 1550nm 20nm 1650nm 30 nm Total power gt 17 dBm gt 13 dBm gt 13 dBm lt 13 dBm 17 dBm gt 20 uW gt 50 uW gt 50 uW gt 50 uW gt 20 uW 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 Am
52. ologies 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 spe cific 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 Write a complete description of the failure and attach it to the instrument Include any specific performance details related to the problem The following CAUTION CAUTION Getting Started Returning the Instrument for Service information should be returned with the instrument e 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 nstrument 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 Cover all front or rear panel connect
53. onnectors are susceptible to damage that is not immedi ately 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 to glass 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 um 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 replaci
54. or cleaning fiber optic 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 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 CAUTION 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 Do not use any type of f
55. order to perform this measurement the Agilent 83437A s output is modu lated at 270 Hz Because the optical spectrum analyzer has the ability to syn chronize its data acquisition with the modulated light it can subtract out the effects of ambient light To learn more about using the optical spectrum ana lyzer s adc trigger feature refer to Agilent Technologies Product Note 71455 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 Connect the equipment as shown in the following figure Square Wave Broadband Generator Optical Light Source 270 Hz TTL Spectrum Analyzer Modulation Input e P u ru IE Optical Input Broadband Light Source representing Coupler ambient light fig10 Set the square wave generator s TTL output for a frequency of 270 Hz Set its power level to 10 uW If you use a different modulation frequency set the optical spectrum analyzer s resolution bandwidth to a value
56. ore 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 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 out weighs the risk of contamination by foam swabs Clean the adapter with the foam swab 3 Drythe 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 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
57. ors that were originally covered when you first received the instrument Cover electrical connectors to protect sensitive components from electrostatic damage Cover optical connectors to protect them from damage due to physical contact or dust 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 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 e For instruments weighing less than 54 kg 120 Ib use a double walled cor rugated cardboard carton of 159 kg 350 Ib test strength e The carton must be large enough to allow approximately 7 cm 3 inches on all sides ofthe instrument for packing material and strong enough to accom modate the weight of the instrument e Surround the equipment with approximately 7 cm 3 inches of packing ma terial 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 Getting Started Returning the Instrument for Service Sealed Air
58. ositions of the instru ment power line switch The CE mark is a reg istered trademark of the European Commu nity 6 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 ISMI A 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 il 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 origi nates from edge emitting LEDs EELEDs the power density of the output spectrum is considerably greater than that of surface emitting LEDs or white light tungsten lamp sources Several output wavelengths are available Although the standard Agilent 83437A s output is 1500 nm your instrume
59. oximately 1 5V 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 If the voltage measured across the resistor is incorrect return the instrument to Agilent Technologies for servicing Servicing Troubleshooting To check the power supply 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 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 e Red 2 wire 15V e White red 92 wire 5V Violet 7 wire 15V Black 0 wire ground White black 90 wire ground If no voltages are detected check that the ac line input voltage at the cable that connects to JI 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
60. pectrum analyzer s marker functions to measure the peak wavelength value of each EELED source installed in the Agilent 83437A 5 20 Description Procedure Servicing Performance Tests Test 3 Power Stability Power stability is verified using the following devices Power meter gt 30 dB return loss This test must be performed in a stable environment where the ambient tem perature changes less than 1 C throughout the test Turn on the Agilent 83437A and the power meter Allow them to warm up for one hour Connect a power meter to the Agilent 83437 A s front panel OPTICAL OUT connector 3 Remove any BNC terminations on the rear panel MODULATION INPUT connectors Configure the power meter to measure total drift in output power over 15 minutes Start the test 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 x 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 CA
61. plitude Characteristics 1200 nm 1310 nm 1430 nm 1550 nm 1650 nm Source Source Source Source Source 3 dB width 45 nm 47 nm 50 nm 52 nm 55 nm characteristic Peak density gt 37 dBm nm lt 33 dBm nm gt 33 dBm nm gt 33 dBm nm gt 37 dBm nm characteristic 200 nW nm 500 nW nm 500 nW nm 500 nW nm 200 nW nm 3 3 Table 3 3 Total Power Installed Options Specifications and Regulatory Information Specifications Minimum Output Power dBm 1200 nm 1300 nm 1430 nm 1550 nm 1650 nm 00 003 004 005 006 Source Source Source Source Source 13 0 17 0 21 0 17 0 17 0 17 0 18 0 17 0 22 0 13 0 14 0 18 0 14 0 14 0 18 0 18 0 21 0 13 0 17 0 21 0 18 0 17 0 18 0 18 0 18 0 18 0 22 0 17 0 17 0 17 0 18 0 22 0 21 0 17 0 25 0 21 0 21 0 17 0 21 0 21 0 21 0 21 0 21 0 25 0 18 0 21 0 22 0 21 0 17 0 21 0 18 0 22 0 21 0 18 0 18 0 25 0 18 0 18 0 25 0 21 0 17 0 25 0 21 0 21 0 25 0 18 0 21 0 18 0 21 0 21 0 21 0 25 0 21 0 18 0 22 0 a O
62. ption 005 deletes the 1550 nm source b Specification remains the same value if the Option 001 1550 nm isolator is installed 3 4 Specifications and Regulatory Information Specifications General Specifications Compatible fiber 9 125 um single mode Power stability lt 0 02 dB 15 minutes for 1310 nm 1430 nm and 1550 nm sources lt 0 03 dB 15 minutes for 1200 nm and 1650 nm sources lt 0 05 dB 6 hours a Ambient temperature change gt 1 C measured with power meter having gt 30 dB return loss One hour warm up time required for instrument and power meter General Characteristics Output return loss 25 dB characteristic 50 aB characteristic Modulation Digital TTL compatible 10096 on off DC to 100 kHz characteristic a Measured at 1550 nm with isolator Option 001 and FC APC connector Option 022 RL 38 8B dEn RSENS 69 dom 5 BG dB D U OPTICAL OUT EELED CENTER 1598 8 nm SPAN 288 8 nm RB 1 nm UB 5H Hz 5 ST 26 sec Characteristic spectrum for standard 1550 nm configuration 3 5 Specifications and Regulatory Information Specifications RL 38 HH dBm FSENS 64 dBm jS BH dE TN A AB OPTICAL OUT KA v START LEABA nm STOP 1760 0 nm RB 1 nm YB 2 kHz STs1 4 sec Characteristic spectrum with two EEL
63. r 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 Technolo gies office Refer to Agilent Technologies Service Offices on page 4 5 Cus tomers 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 84 Servicing Replaceable Parts Direct mail order system Within the USA Agilent Technologies can supply parts through a direct mail order 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 l
64. r 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 AZ EELED Source Assembly Refer to Major Assemblies on page 5 6 A2A 1 Fiber Track Assembly A242 LED Modulation Board Assembly A2A3 through A2A6 EELED loading depends on instrument option A2MP1 LED heat sink A2MP2 optical deck sheet metal 5 4 CAUTION Servicing General Information 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 c
65. rce 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 For instruments with multiple EELEDs if the green LED is off drive the EELED with another LED Driver Board Assembly a Movearibbon cable W12 W13 W14 or W15 on the AZAZ LED Modulation Board Assembly from a good EELED to the connector for the suspected EE LED b Try to adjust the EELED s power to within the specification If the power can be adjusted replace the LED Driver Board Assembly 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 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 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 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 Measure the voltage on the end of the resistor that is furthest from the EELED The voltage should measure appr
66. rument damage CAUTION Do mot 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 Connect the other end of the line power cord to the power receptacle Various power cables are available to connect the Agilent 834374 to ac power outlets unique to specific geographic areas The cable appropriate for the area to which the Agilent 834374 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 sup ply after the EMC filters and before other parts of the instrument 2 Use
67. s Servicing Replaceable Parts Reference Agilent Part Description Designator Number w1 Input fiber optic cable Part of A2 assembly W2 83437 60008 Line switch cable includes FL1 and LINE switch to A4J1 W3 A3J7 to B1 Part of B1 WA 83437 60003 Power supply cable A2A2J2 pin 5 to front panel LINE LED indicator green wire W5 83437 60004 Power supply cable A2A2J1 to front panel ACTIVE LED and A1 assembly W6 83437 60001 Power distribution cable A4J2 to A3J6 W7 83437 60002 Modulation cable A3J5 to A2A2J2 W8 83437 60013 Driver 1 cable 11 inches long A3J1 to A5J2 w9 83437 60014 Driver 2 cable Option 002 003 004 and 006 18 5 inches long A3J2 to A6J2 W10 83437 60014 Driver 3 cable Option 002 003 004 and 006 18 5 inches long A3J3 to A7J2 W11 83437 60014 Driver 4 cable Option 002 003 004 and 006 18 5 inches long A3J4 to A8J2 W12 83437 60020 Ribbon cable 1 A2A2J91 to A5J1 W13 83437 60021 Ribbon cable 2 Option 002 003 004 and 006 A2A2J92 to A6J1 W14 83437 60021 Ribbon cable 3 Option 002 003 004 and 006 A2A2J93 to A7J1 W15 83437 60021 Ribbon cable 4 Option 002 003 004 and 006 A2A2J94 to A8J1 W16 8120 5056 SMB to BNC cable 55 5 cm rear panel J1 to A2A2J21 W17 8120 5056 SMB to BNC cable 55 5 cm rear panel J2 to A2A2J11 W18 8120 5056 SMB to BNC cable 55 5 cm rear panel J3 to A2A2J31 W19 8120 5056 SM
68. s 2 11 compatible fiber 3 5 connectors covering 1 11 FLI 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 K keyboard assembly 5 6 L 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 M 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 N noise declaration 3 8 O optical amplifiers 2 5 OPTICAL OUT connector iv 1 3 optical spectrum analyzer 2 4 2 8 options instrument 1 5 4 2 ordering parts 5 34 5 47 P 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
69. s an ideal broadband light source for measuring the noise gain profile of opti cal amplifiers This allows you to accurately predict the amplifier s perfor mance 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 Turn on the optical spectrum analyzer and the Agilent 834374 and allow them to warm up for 1 hour Use a fiber optic cable to connect the Agilent 83437A s output to the input of the optical spectrum analyzer Optical Spectrum Analyzer Broadband Light Source figo On the optical spectrum analyzer press INSTR PRESET AUTO MEAS and then AUTO ALIGN On the optical spectrum analyzer use the START and STOP keys to set the proper wavelength range Press REF LEVEL and set the reference level to 30 dBm Press SENS and set the sensitivity to 70 dBm You can increase the sensitivity beyond this value if needed 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
70. sables se lected source Agilent Technologies part number 1250 0774 Agilent 811 13PC 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 Description Agilent Part Number Adapter ni Sum Diamond HMS 10 81000AI iZ FC PC 81000FI NE D4 810006 4 sc 81000KI iZ DIN 8100051 dh ST 81000VI E 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 PartNo Plug Description ip Color Country 250V 8120 1351 Straight BS1363A 90 228 Gray United Kingdom 8120 1703 90 90 228 Mint Gray Cyprus Nigeria Zimba 6 bwe Singapore 250V 8120 1369 Straight NZSS198 ASC 79 200 Gray Australia New Zealand 90 8120 0696 87 221 Mint Gray 8120 1689 Straight CEE7 Y11 79 200 Mint Gray East and West Europe 8120 1692 90 79 200 Mint Gray Saudi Arabia So 8120 2857p Straight Shielded 79 200 Coco Brown Africa India unpolar ized in many nations 8120 1378 Straight NEMA5 15P 90 228 Jade Gray United States Canada 8120 1521 90 90 228 Jade Gray Mexico Philippines 8120 1992 Straight Me
71. 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 WARNING WARNING Servicing Troubleshooting Troubleshooting 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 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 5 15 To check the power supply 5 16 To check the line power fuse 5 17 5 12 Servicing Troubleshooting If the output power is low Check for the following common problems O 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 CJ Clean the OPTICAL OUT connector as described in Cleaning Connections for Accurate Measurements on page 2 11 O Remove any modulating signal from the rear panel MODULATION INPUT con nectors Modulation reduces the average output power Of course the de crease in power is tied to the duty cycle of the modulating signal
72. t of A2 assembly 5 83437 00008 1 Sheet metal power supply deck 6 86120 00011 1 Shield for A4 Power Supply 7 1400 0755 2 Component clip 0 75 in x 0 75 in 8 1400 0249 1 Cable tie wrap 9 1 A2MP1 LED heat sink part of A2 assembly 0 1 Fiber container lid part of A2 assembly not separately orderable 1 1 Fiber container part of A2 assembly not separately orderable 2 1 Fiber track part of A2 assembly not separately orderable 3 0515 0830 2 Screw TORX T10 Pan Head M3 x 0 5 28 mm long 4 0515 0380 4 Screw TORX T15 Pan Head M4 x 0 7 10 mm long 5 0515 0372 14 Screw TORX T10 Pan Head M3 x 0 5 8 mm long 6 8 Screw part of A2 assembly not separately orderable 5 57 Servicing Replaceable Parts Top Internal rptbharc 5 58 Table 5 20 Side View Parts Servicing Replaceable Parts Item s Oty Description 1 5021 5831 2 Side frame 2 5001 0538 2 Trim strip side not shown 3 0515 0458 10 Screw TORX T10 Pan Head M3 5 x 0 6 8 mm long 4 0515 2086 8 Screw TORX T15 Flat Head M4 x 0 7 7 mm long 5 0515 0377 4 Screw TORX T10 Pan Head M3 5 x 0 6 10 mm long 6 1400 0249 1 Cable tie wrap 7 5 Screw part of A2 assembly not separately orderable 8 places 4 places 6 places Table 5 21 Instrument Cover Parts N ex 5 places rpside
73. ted 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 Usethe 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 Top Internal IET Lak Tel A A Rear Internal rptrmoc 5 23 Servicing Adjustment Procedures Table 5 6 EELED Wavelength Values EELED Package Number EELED Wavelength 1GE3 4409 200 nm 1GE3 4410 430 nm 1GE3 4411 1650 nm 1GE3 4412 or 1GE3 4402 1300 nm 1GE3 4413 or 1GE3 4403 1550 nm 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 potenti ometer 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 If the Agilent 83437A has more than one source installed repeat Step 3 through Step 7 to adjust another source 5 24 Servicing Adjustme
74. that is at least six times greater than the mod ulation frequency 3 Onthe 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 N 0 Aa 10 11 Making Measurements Ambient Light Suppression Press REF LEVEL and set the reference level to 30 dBm Press Amptd LOG dB DIV and enter 5 dB Press MORE CHOP On Off so that Off is underlined Press BW Swp SWPTIME AutoMan and set the sweep time to 10 seconds Press MORE MORE adc trigger and then ADCTRIG AC Press ADCTRIG DELAY and enter a value of 1 ms 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 connec tion techniques more important than ever Damage to the connectors on cali bration and verification devices test ports cables and other devices can degrade measurement accuracy and damage instruments Replacing a dam aged 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 connec tors Choosing the Right Connector A critical but often overlooked
75. 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 gt 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 LED and ambient light LED RL 30 02 dBm SENS 60 dBm 5 00 dB D U STAR 500 0 nm STOP 1600 0 nm RB 1 nm VB 3 kHz 6 ST 20 sec ambient In
76. utter 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 SER US36060162 serial and option numbers listed on the label are for the instrument that the A2A1 assembly is installed in Agilent MADE N U S A 5 5 Servicing General Information Table 5 3 Major Assemblies Holerence Description Designator Al 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 Top Internal A4 B1 FL1 lol be lie
77. y 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 POLLU TION DEGREE 2 per IEC 1010 and 664 respectively Notice for This is to declare that this instrument is in conformance with the German Reg Germany Noise ulation on Noise Declaration for Machines Laermangabe nach der Maschinen Declaration laermrerordnumg 3 GSGV Deutschland Acoustic Noise Emission Geraeuschemission LpA gt 70 dB LpA 70 dB Operator position am Arbeitsplatz Normal position normaler Betrieb per ISO 7779 nach DIN 45635 t 19 3 8 Specifications and Regulatory Information Regulatory Information Declaration of Conformity DECLARATION OF CONFORMITY according to ISO TEC Guide 22 and EN 45014 Manufacturer s Name Hewlett Packard Co Manufacturer s Address 1400 Fountaingrove Parkway Santa Rosa CA 95403 1799 USA declares that the product Product Name Broadband Light Source Model Number HP 83437A Product Options This declaration covers all options of the above product conforms to the following Product specifications Safety IEC 1010 1 1990 A1 EN 61010 1 1993 CAN CSA C22 2 No 1010 1 92 EMC CISPR 11 1990 EN 55011 1991 Group 1 Class A IEC 801 2 1984 EN 50082 1 1992 4 kV CD 8 kV AD IEC 801 3 1984 EN 50082 1 1992 3 V m 27 500 MHz IEC 801 4 1988 E

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