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ServiceManual
WFM90DandWFM91D
HandheldWaveform,Vector,
Picture,andAudioMonitor
071-1143-01
Thisdocumentappliesto firmwareversion 2.13
and above.
Warning
Theservicing instructionsareforuseby qualified
personnelonly.To avoid personalinjury,do not
perform any servicing unlessyou arequalified to
do so. Refer to all safety summaries prior to
performing service.
www.tektronix.com
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Copyright© Tektronix, Inc. All rightsreserved. Tektronix productsare covered by U.S. and foreign patents, issued and pending. Information in thispublication supercedes that in all previously published material. Specificationsand price change privilegesreserved. Tektronix, Inc., P.O. Box 500, Beaverton, OR 97077 TEKTRONIXand TEKare registered trademarksof Tektronix, Inc.
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WARRANTY Tektronix warrantsthat the productsthat it manufacturesand sellswill be free from defectsin materialsand workmanship for a period of one (1) year from the date of shipment. If a product provesdefective during this warranty period, Tektronix, at itsoption, either will repair the defective product without charge for partsand labor, orwill provide a replacement inexchange forthe defective product. In order to obtain service under thiswarranty, Customer must notify Tektronix of the defect b
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TableofContents GeneralSafetySummary ................................... vii ServiceSafetySummary .................................... ix Preface................................................... xi About ThisManual............................................... xi RelatedManuals ................................................. xi ContactingTektronix ............................................. xii Specifications Product Description .............................................. 1--1 Characte
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TableofContents Variable GainRange andVertical PositionRange....................... 4--7 Overscan ....................................................... 4--8 Input and DC Restorer Frequency Response ........................... 4--9 VectorPhase Stability............................................. 4--11 Chrominance Bandwidth .......................................... 4--12 Audio Gain and Frequency Response ................................ 4--13 PerformanceVerification:DigitalSection............
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TableofContents Connector Diagram .............................................. 6--59 Options Options ........................................................ 7--1 Accessories ..................................................... 7--2 ReplaceableMechanicalParts ReplaceablePartsList...................................... 8--1 PartsOrderingInformation......................................... 8--1 Usingthe Replaceable PartsList .................................... 8--2 Diagrams Diagrams............
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TableofContents ListofFigures Figure2--1:Installingtheviewinghood ....................... 2--2 Figure2--2:Installingthedeskstand.......................... 2--2 Figure2--3:PackingtheOption33travelcase .................. 2--3 Figure2--4:RemovingtheNiMHbatterypack ................. 2--5 Figure2--5:Insideofthebatterycompartment,showing polaritymarkings ...................................... 2--6 Figure2--6:WFM90Dkeypad ............................... 2--8 Figure2--7:WFM90DandWFM91Dsidepanels .......
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TableofContents Figure6--15:Batterycontactinstallationalignment ............. 6--32 Figure6--16:Batterypower-wireandturnlockstudreceptacle installation ............................................ 6--33 Figure6--17:Batteryorientationmarkerposition ............... 6--36 Figure6--18:InstallingtheEMIsuppressor .................... 6--37 Figure6--19:Testingthebatterychargingcircuit................ 6--40 Figure6--20:Flowchartfornodisplay ........................ 6--45 Figure6--21:Flowchartfordistorte
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TableofContents ListofTables Table1--1:Verticaldeflectionsystem ......................... 1--2 Table1--2:DCrestoration................................... 1--4 Table1--3:Audiomode ..................................... 1--5 Table1--4:Horizontaldeflectionsystem ...................... 1--5 Table1--5:Vectormode .................................... 1--6 Table1--6:Synchronization ................................. 1--7 Table1--7:Powersource ................................... 1--7 Table1--8:Physicalchar
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GeneralSafetySummary Reviewthefollowingsafetyprecautionstoavoidinjuryandpreventdamageto thisproductoranyproductsconnectedtoit. Toavoidpotentialhazards, usethisproductonlyasspecified. Onlyqualified personnel should perform serviceprocedures. Whileusingthisproduct, youmayneedtoaccessotherpartsofthesystem. Read theGeneral SafetySummaryinothersystemmanualsforwarningsandcautions relatedtooperatingthesystem. ConnectandDisconnectProperly.Donotconnectordisconnectprobesortest leadswhiletheyareconnectedto
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GeneralSafetySummary SymbolsandTerms TermsinthisManual.Thesetermsmayappearinthismanual: WARNING.Warning statements identifyconditions or practices that could result in injuryor loss of life. CAUTION.Caution statements identifyconditions or practices that could result in damageto this product or other property. TermsontheProduct.Thesetermsmayappearontheproduct: DANGER indicatesaninjuryhazardimmediatelyaccessibleasyoureadthe marking. WARNINGindicatesaninjuryhazard notimmediatelyaccessibleasyouread
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ServiceSafetySummary Onlyqualifiedpersonnelshouldperformserviceprocedures. ReadthisService SafetySummaryandtheGeneral SafetySummarybeforeperforminganyservice procedures. DoNotServiceAlone.Donotperforminternalserviceoradjustmentsofthis productunlessanotherpersoncapableofrenderingfirstaidandresuscitationis present. DisconnectPower.Toavoidelectricshock, switchofftheinstrumentpower, then disconnectthepowercordfromthemainspower. UseCareWhenServicingWithPowerOn.Dangerousvoltagesorcurrentsmay existinth
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ServiceSafetySummary x WFM90DandWFM91DServiceManual
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Preface ThismanualprovidesinstructionsforservicingtheWFM90DandWFM91D HandheldWaveform, Vector, Picture, andAudioMonitors. Thismanual describesfeaturesandspecificationsthatarecommontoallgeneratormodules. Theseincludesystemconfigurationandthecommoncontrolinterface. AboutThisManual Thismanualiscomposedofthefollowingsections: Specificationsliststheelectricalandenvironmentalspecificationsand providesageneralproductdescription. Operating Informationdescribesinstallationandfrontpaneloperationofthe
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Preface ContactingTektronix Phone 1-800-833-9200* Address Tektronix, Inc. Department or name (if known) 14200 SW Karl Braun Drive P.O. Box 500 Beaverton, OR 97077 USA Web site www.tektronix.com Sales support 1-800-833-9200, select option 1* Service support 1-800-833-9200, select option 2* Technical support www.tektronix.com/support 1-800-833-9200, select option 3* 6:00 a.m. -- 5:00 p.m. Pacific Standard Time * ThisphonenumberistollfreeinNorthAmerica.Afterofficehours,pleaseleaveavoicemail message
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Specifications
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Specifications Thissectionincludesthefollowinginformation: Productdescription Specificationstables ProductDescription Thehandheld, self-contained, Tektronix WFM90Dand WFM91Dtelevision waveformmonitorscanmonitoranaloganddigitalsignals. Themonitorsprovide compositeandcomponentwaveformdisplaysaswellasvectorandpicture displays. Thesemonitorscanbeusedinthetraditionalin-houseapplicationsoftelevision production, post-production, andsignaltransmission. Inaddition, theirportabili- tyallowsthemtobeuse
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Specifications CharacteristicsTables Thetablesusethefollowingabbreviations: PerformanceRequirement(Req). Allperformancerequirementsinthespecifica- tiontablesareidentifiedwith Req, andcanbeassuredbycompletingthe PerformanceCheck Procedurelocated in theservicemanual. Allowawarm-up timeof20minutes. Performancerequirementsintheelectricalspecificationsarevalidoveran ambienttemperaturerangeof+20°Cto+30°C. ThePerformanceRequirement toleranceslistedintheElectricalSpecificationaredoubledoverthetemperatur
