Agilent-technologies 83438A Bedienungsanleitung

Agilent 83438AErbium ASE SourceUser’s Guide

5-46ServicingReplaceable Parts

5-47ServicingReplaceable PartsTable 5-11. Side View PartsItemAgilent PartNumberQty Description1 5021-5831 2 Side frame2 5001-0538 2 Trim strip, side

5-48ServicingReplaceable PartsTable 5-12. Instrument Cover PartsItemAgilent PartNumberQty Description— 5062-3730 1 Cover, top— 5062-3742 1 Cover, bott

IndexIndex-1Aac power cables, 1-6, 4-4accessories, 4-2accuracymeasurement, ivwavelength, 2-3ACTIVE key, 1-7adaptersfiber optic, 4-3Agilent offices, 4-

Index-2Indexinstalling, 1-2instrumentcover, removing, 5-27rear view, vreturning for service, 1-8Llaseraperture, ivclassification, iv, 3-6laser classif

Index-3IndexTtools for servicing, 5-4troubleshooting, 5-2TTL logic, 2-10turning output off, 2-10Vventilation requirements, 1-2Wwavelengthaccuracy, 2-3

1Step 1. Inspect the Shipment 1-4Step 2. Check the Fuse 1-5Step 3. Connect the Line-Power Cable 1-6Step 4. Turn on the Agilent 83438A 1-7Returning the

1-2Getting StartedGetting StartedGetting StartedThe instructions in this chapter show you how to install your Agilent 83438A. You should be able to fi

1-3Getting StartedGetting StartedMeasurement accuracy—it’s up to you!Fiber-optic connectors are easily damaged when connected to dirty or damaged cabl

1-4Getting StartedStep 1. Inspect the ShipmentStep 1. Inspect the Shipment1Verify that all components ordered have arrived by comparing the shipping f

1-5Getting StartedStep 2. Check the FuseStep 2. Check the Fuse 1Locate the line-input connector on the instrument’s rear panel.2Disconnect the line-po

1-6Getting StartedStep 3. Connect the Line-Power CableStep 3. Connect the Line-Power CableCAUTIONAlways use the three-prong AC power cord supplied wit

1-7Getting StartedStep 4. Turn on the Agilent 83438AStep 4. Turn on the Agilent 83438A1Press the front-panel LINE key.The front-panel LINE switch disc

1-8Getting StartedReturning the Instrument for ServiceReturning the Instrument for Service The instructions in this section show you how to properly r

1-9Getting StartedReturning the Instrument for Serviceinformation should be returned with the instrument. • Type of service required. • Date instrumen

ii© Copyright 2000Agilent Technologies All Rights Reserved. Repro-duction, adaptation, or trans-lation without prior written permission is prohibited,

1-10Getting StartedReturning the Instrument for ServiceSealed Air Corporation (Commerce, California 90001). Air Cap looks like a plastic sheet filled

2Performing Stimulus-Response Measurements 2-3To characterize a passive device 2-5Ambient Light Suppression 2-7To suppress ambient light 2-8Modulating

2-2Making MeasurementsMaking MeasurementsMaking MeasurementsIn this chapter, you’ll find examples of making measurements using the Agilent 83438A. The

2-3Making MeasurementsPerforming Stimulus-Response MeasurementsPerforming Stimulus-Response MeasurementsThis section shows you how to perform stimulus

2-4Making MeasurementsPerforming Stimulus-Response Measurements

2-5Making MeasurementsPerforming Stimulus-Response MeasurementsTo characterize a passive device1Turn on the optical spectrum analyzer and the Agilent

2-6Making MeasurementsPerforming Stimulus-Response MeasurementsIf changes to wavelength range or resolution bandwidth are made after this trace is sto

2-7Making MeasurementsAmbient Light SuppressionAmbient Light SuppressionAmbient light can add significant errors to optical power measurements. This i

2-8Making MeasurementsAmbient Light SuppressionTo suppress ambient lightThis example uses specific equipment and settings to demonstrate how to make a

2-9Making MeasurementsAmbient Light Suppression5Press REF LEVEL, and set the reference level to –10 dBm.6Press Amptd, LOG dB/DIV, and enter 5 dB.7Pres

iiiThe Agilent 83438A—At a GlanceThe Agilent 83438A—At a GlanceThe Agilent 83438A Erbium ASE Source provides incoherent light for charac-terizing fibe

2-10Making MeasurementsModulating the Output LightModulating the Output LightThe rear panel of the instrument is equipped with a MODULATION INPUT conn

2-11Making MeasurementsCleaning Connections for Accurate MeasurementsCleaning Connections for Accurate Measurements Today, advances in measurement cap

2-12Making MeasurementsCleaning Connections for Accurate Measurementstions take repeatability uncertainty into account? • Will a connector degrade the

2-13Making MeasurementsCleaning Connections for Accurate MeasurementsFigure 2-2. Universal adapters to Diamond HMS-10.The HMS-10 encases the fiber wit

2-14Making MeasurementsCleaning Connections for Accurate MeasurementsThe soft core, while allowing precise centering, is also the chief liability of t

2-15Making MeasurementsCleaning Connections for Accurate MeasurementsUse the following guidelines to achieve the best possible performance when making

2-16Making MeasurementsCleaning Connections for Accurate MeasurementsFigure 2-6. Damage from improper cleaning.While these often work well on first in

2-17Making MeasurementsCleaning Connections for Accurate Measurements• Keep connectors covered when not in use. • Use fusion splices on the more perma

2-18Making MeasurementsCleaning Connections for Accurate MeasurementsVisual inspection of fiber endsVisual inspection of fiber ends can be helpful. Co

2-19Making MeasurementsCleaning Connections for Accurate MeasurementsTo clean a non-lensed connector CAUTIONDo not use any type of foam swab to clean

ivThe Agilent 83438A—At a GlanceThe output can be modulated or turned offYou can digitally modulate the output using a TTL compatible signal. For a co

2-20Making MeasurementsCleaning Connections for Accurate MeasurementsCAUTIONDo not shake, tip, or invert compressed air canisters, because this releas

3Specifications 3-3Regulatory Information 3-6Specifications and Regulatory Information

3-2Specifications and Regulatory InformationSpecifications and Regulatory InformationSpecifications and Regulatory InformationThis chapter lists speci

3-3Specifications and Regulatory InformationSpecificationsSpecifications General SpecificationsTotal output powera+8.1 dBm maximum (6.5 mW)+5.5 dBm mi

3-4Specifications and Regulatory InformationSpecificationsCharacteristic output spectrum (1500 nm to 1600 nm)Characteristic output spectrum (1550 nm t

3-5Specifications and Regulatory InformationSpecificationsCharacteristic output waveform when modulated with 270 Hz square waveOperating Specification

3-6Specifications and Regulatory InformationRegulatory InformationRegulatory Information• Laser Classification: This product contains an IEC LASER Cla

3-7Specifications and Regulatory InformationRegulatory InformationDeclaration of ConformityI’ll

4Instrument Options 4-2Accessories 4-2Front-Panel Fiber-Optic Adapters 4-3Power Cords 4-4Agilent Technologies Service Offices 4-5Reference

vThe Agilent 83438A—At a GlanceRear view of instrument

4-2ReferenceInstrument OptionsInstrument OptionsAccessories• BNC short (m) for rear-panel MODULATION INPUT connectors. Disables selected source. Agile

4-3ReferenceFront-Panel Fiber-Optic AdaptersFront-Panel Fiber-Optic AdaptersFront PanelFiber-Optic AdapterDescription Agilent Part NumberDiamond HMS-1

4-4ReferencePower CordsPower CordsPlug Type Cable Part No. Plug DescriptionLength (in/cm)Color Country250V 8120-13518120-1703Straight *BS1363A90°90/22

4-5ReferenceAgilent Technologies Service OfficesAgilent Technologies Service OfficesBefore returning an instrument for service, call the Agilent Techn

5General Information 5-4Electrostatic Discharge Information 5-10Troubleshooting 5-12If the output power is low 5-14To check the A5 Laser Driver Board

5-2ServicingServicingServicingIn this chapter, you'll find information on troubleshooting, testing perfor-mance, adjusting, and replacing parts i

5-3ServicingServicingWARNINGFor continued protection against fire hazard, replace line fuse only with same type and ratings, (type T 6.3A/250V for 100

5-4ServicingGeneral InformationGeneral InformationWhenever you contact Agilent Technologies about your Agilent 83438A, have the complete serial number

5-5ServicingGeneral InformationWARNINGTo avoid exposure to the laser path of a CLASS IIIb LASER PRODUCT, do not open the A2A1 assembly. There are no s

viGeneral Safety ConsiderationsGeneral Safety ConsiderationsThis product has been designed and tested in accordance with IEC Publica-tion 61010-1, Saf

5-6ServicingGeneral InformationTable 5-2. Service ToolsTool Agilent Part NumberSmall Pozidriv screwdriver 8710-0899Wire cutter 8710-0012Long-nose

5-7ServicingGeneral Information

5-8ServicingGeneral InformationTable 5-4. Cable AssembliesReferenceDesignatorDescriptionW1 Input fiber optic cable (Part of A2 assembly)W2 Line switc

5-9ServicingGeneral Information

5-10ServicingElectrostatic Discharge InformationElectrostatic Discharge Information Electrostatic discharge (ESD) can damage or destroy electronic com

5-11ServicingElectrostatic Discharge InformationTo ensure user safety, the static-safe accessories must provide at least 1 MΩ of isolation from ground

5-12ServicingTroubleshootingTroubleshootingThe following procedures are located in this section:If the output power is low 5-14To check the A5 Laser D

5-13ServicingTroubleshootingWARNINGThe opening of covers or removal of parts is likely to expose dangerous voltages. Disconnect the instrument from al

5-14ServicingTroubleshootingIf the output power is low1Check for the following common problems:❒Check that the front-panel ACTIVE key is on. If the AC

5-15ServicingTroubleshootingTo check the A5 Laser Driver Board AssemblyIf the A5 Laser Driver Board Assembly needs to be replaced, perform the instruc

viiGeneral Safety ConsiderationsCAUTIONBefore switching on this instrument, make sure that the line voltage selector switch is set to the line voltage

5-16ServicingTroubleshooting3If the green LED is on, the current source driving the pump laser is operating correctly. If the yellow LED is on, the pu

5-17ServicingTroubleshootingTo check the A2A2 Laser Modulation Board Assembly1Check the +5V supply by probing the center pin of J11. The modulation in

5-18ServicingTroubleshootingTo check the A4 Power Supply Board Assembly1Check the 6.3A fuse in the rear-panel’s line module FL1. Refer to “To check th

5-19ServicingTroubleshootingTo check the line-power fuse1Locate the line-input connector on the instrument’s rear panel.2Disconnect the line-power cab

5-20ServicingPerformance TestsPerformance TestsThe procedures in this section test the Agilent 83438A’s performance using the specifications listed in

5-21ServicingPerformance TestsTest 1. Total Output PowerDescriptionTotal power is verified using the following devices:• Power meterProcedure1Connect

5-22ServicingPerformance TestsTest 2. Power StabilityDescriptionPower stability is verified using a power meter (> 30 dB return loss)This test must

5-23ServicingAdjustment ProcedureAdjustment ProcedureThe Agilent 83438A has only one adjustment procedure, total power. Periodic adjustment is not req

5-24ServicingAdjustment ProcedureTo adjust total powerDescriptionThe total power is adjusted by a potentiometer. The potentiometer is located on the A

5-25ServicingAdjustment Procedure

5-26ServicingReplacing Instrument AssembliesReplacing Instrument AssembliesThis section provides step-by-step procedures to remove and replace the maj

5-27ServicingReplacing Instrument AssembliesTo remove the instrument cover1Disconnect the power cord from the instrument.2Position the instrument so t

5-28ServicingReplacing Instrument AssembliesTo replace the A2 Source assemblyThe A2 assembly, which includes A2A1, A2A2, A2A3, A2MP1, and A2MP2, must

5-29ServicingReplacing Instrument Assemblies6Be sure to cover the exposed end of the fiber-optic cable.7Use a T-10 TORX driver to remove the four scre

5-30ServicingReplacing Instrument AssembliesTo replace the A5 Laser Driver Board AssemblyThree resistors on the A5 Laser Driver Board Assembly limit t

5-31ServicingReplacing Instrument AssembliesLocation of resistors R2, R8, and R9

5-32ServicingReplacing Instrument AssembliesTo route the rear-panel BNC modulation cableThe figure below shows the correct path for the rear-panel BNC

5-33ServicingReplacing Instrument AssembliesTo replace line filter assembly FL1Although replacing FL1 is straightforward, be sure to observe the follo

5-34ServicingReplacing Instrument AssembliesTo replace a cable clipCable clips are used throughout the instrument to attach cables to sheet-metal hous

5-35ServicingReplaceable Parts5ServicingReplaceable PartsIn this section, you’ll find figures that identify each mechanical and electrical assembly in

ContentsContents-1The Agilent 83438A—At a Glance iii1 Getting StartedStep 1. Inspect the Shipment 1-4Step 2. Check the Fuse 1-5Step 3. Connect the Li

5-36ServicingReplaceable PartsDirect mail-order systemWithin the USA, Agilent Technologies can supply parts through a direct mail-order system. Advant

5-37ServicingReplaceable PartsTable 5-6. Major AssembliesReferenceDesignatorAgilent PartNumberDescriptionA1 54710-66512 Keyboard AssemblyA2 — ASE Sour

5-38ServicingReplaceable Parts

5-39ServicingReplaceable PartsTable 5-7. Cable AssembliesReferenceDesignatorAgilent PartNumberDescriptionW1 — Input fiber optic cable (Part of A2 asse

5-40ServicingReplaceable Parts

5-41ServicingReplaceable PartsTable 5-8. Front-Panel PartsItemAgilent PartNumberQty Description1 83437-00002 1 Front panel, dress2 5021-8413 1 Front

5-42ServicingReplaceable Parts

5-43ServicingReplaceable PartsTable 5-9. Rear-Panel PartsItemAgilent PartNumberQty Description1 83437-00005 1 Rear panel, dress2 5021-5814 1 Rear fra

5-44ServicingReplaceable Parts

5-45ServicingReplaceable PartsTable 5-10. Top and Bottom View PartsItemAgilent PartNumberQty Description1 0515-1400 6Screw, TORX T10 90° Flat Head, M