Tektronix 2756P Operating and maintenance manual

-Tpi/PROGRAMMERS
1LUXMANUAL PartNo.:070-6320-00
ProductGroup26
2756P
SPECTRUMANALYZER
Please Check for CHANGE INFORMATION at the Rear of This Manual
FirstPrintingMAR1987
Ibktronix
COMWTTEDTOEXCtlXENd

Copyright® 1987Tektronix,Inc.Allrightsreserved.
Contentsofthispublicationmaynotbereproducedinany
formwithoutthewrittenpermissionofTektronix,Inc.
ProductsofTektronix,Inc.anditssubsidiariesarecovered
byU.S.andforeignpatentsand/orpendingpatents.
TEKTRONIX,TEK,SCOPE-MOBILE,andare
registeredtrademarksofTektronix,Inc.TELEQUIPMENT
isa registeredtrademarkofTektronixU.K.Limited.
PrintedinU.S.A.Specificationandpricechangeprivileges
arereserved.
Tektronix,Inc.
P.O.Box500
Beaverton,Oregon97077 SerialNumber,

2756PProgrammers
PREFACE
Thismanualisoneofa setofproductmanualsfor
theTEKTRONIX2756PProgrammableSpectrum
Analyzer.Thismanualdescribestheprogrammablefunc-
tionsofthespectrumanalyzerandhowtousethemfor
remoteoperation.Themanualorganizationisshownin
theTableofContents.Themanualsthatareavailable
nowinadditiontothisProgrammersManualarethe
•2756POperatorsManual(standardaccessory)and
•2756PServiceManuals,Volume1 and2 (optional
accessories).
Formanualorderinginformation,contactyourlocal
TektronixFieldOfficeorrepresentativeorrefertothe
AccessoriesportionoftheReplaceableMechanicalParts
listintheServiceManual,Volume2.
StandardsandConventionsUsed
Mostterminologyisconsistentwithstandards
adaptedbyIEEEandIEC.A glossaryoftermsispro-
videdinAppendixA.Abbreviationsinthedocumentation
areconsistentwithANSIY1.1-1972.GPIBfunctionscon-
formtotheIEEE488-1978StandardandtheTektronix
InterfaceStandardforGPIBCodes,Formats,Conven-
tions,andFeatures.CopiesofANSIandIEEEstandards
canbeorderedfromtheInstituteofElectricalandElec-
tronicEngineersInc.ContactyourlocalTektronixField
Officeorrepresentativeifyouhavequestionsregarding
theTektronixreferencedocument.
Change/HistoryInformation
Anychangeinformationthatinvolvesmanualcorrec-
tionsoradditionalinformationislocatedbehindthe
tabbedChangeInformationpageatthebackofthis
manual.
Historyinformation,aswellastheupdateddata,is
combinedwithinthismanualwhenthepage(s)isrevised.
Arevisedpageisidentifiedbya revisiondatelocatedin
thelowerinsidecornerofthepage.
UnpackingandInitialInspection
Instructionsforunpackingandpreparingtheinstru-
mentforusearedescribedinSection3 oftheOperators
Manual.
StorageandRepackaging
Instructionsforshort-andlong-termstorageand
instrumentrepackagingforshipmentaredescribedin
Section3 oftheOperatorsManual.
i

2756PProgrammers
TABLEOFCONTENTS
Page Section2
PREFACE
TABLEOFCONTENTS
LISTOFILLUSTRATIONS.
LISTOFTABLES.
...ii
.vii
.vii
SAFETYSUMMARY. .VIII
Section1 INTRODUCTIONTOGPIBOPERATION
Section2
GPIBPushbuttonandIndicators. .1 1
RESETTOLOCAL/REMOTE 1 -1
PLOT1-2
<SHIFT>SRQ1-2
ADDRESSED1-2
GPIBFunctionReadout1-2
SettingtheGPIBADDRESSSwitches1-2
SettingtheLFOREOISwitch1-3
SettingtheTALKONLYandLISTEN
ONLYSwitches1-4Section3
IEEE488Functions1-4
SourceHandshake(SH1)1-4
AcceptorHandshake(AH1)1-5
Talker(T5)1-5
Listener(L3)1-5
ServiceRequest(SR1)1-5
Remote/Local(RL1)1-5
ParallelPoll(PP1)1-5
DeviceClear(DC1)1-5
DeviceTrigger(DT1)1-5
Controller(CO)1-5
Connectingtoa System1-5
DEVICE-DEPENDENTMESSAGE
STRUCTUREANDEXECUTION
SyntaxDiagrams2-1Section4
SpectrumAnalyzerInputMessages2-1
InputMessageFormat2-1
MessageUnitDelimiter(;)2-2
MessageTerminator(TERM)2-2
FormatCharacters2-2
InputBufferingandExecution2-2
CommandFormat2-2
Header2-3
HeaderDelimiter(SP)2-3
ArgumentDelimiter(,)2-3
ArgumentFormat2-3
Numbers2-3
Units2-4
CharacterArgument2-4
LinkArgument2-4
StringArgument2-4
Page
(continued)
BinaryBlock2-4
EndBlock2-5
QueryFormat2-4
QueryResponseFormat2-4
SpectrumAnalyzerOutputMessages2-5
OutputMessageFormat2-5
OutputMessageExecution2-5
SpectrumAnalyzerCompatibility2-5
GPIB2-5
DEGAUSCommand2-5
IDENTCommand2-5
ReadoutMaximum2-5
ServiceRequests2-5
AffectofBusyonDevice-
DependentMessages2-5
GET(GroupExecuteTrigger)2-6
ReferenceLevel2-6
RDOUTCommand2-6
Compatibility-OnlyCommands2-6
GETTINGSTARTED
SettingandQuerying
ProgrammableControls3-1
SettingProgrammableControls3-1
QueryingProgrammableControls3-2
ExerciseRoutines3-3
Talk/Listen3-3
AcquiringInstrumentSettingswith
theSETQuery3-4
ResettingtheProgrammableSpectrum
AnalyzerandInterfaceMessages3-4
Acquiringa Waveform3-4
GettingSmarter3-5
GettingSmarterAnotherWay3-5
INSTRUMENTCONTROL
UseinMacros4-2
NUMArgumentValues4-2
Frequency4-3
FREQ4-4
TUNE4-4
TMODE4-4
FIRST4
SECOND4
TGMODE4
SAMODE4
DISCOR4
FRQRNG4
STEP4
MSTEP4
PSTEP4
COUNT4

2756PProgrammers
Page
Section 4 (continued)
CRES 4-9
CNTCF 4-9
STSTOP 4-9
DELFR 4-10
DEGAUS 4-10
EXMXR 4-10
IMPED 4-11
FrequencySpan and Resolution 4-12
SPAN 4-13
ZEROSP 4-13
MXSPN 4-14
RESBW 4-14
ARES 4-15
IDENT 4-16
VerticalDisplay and ReferenceLevel....4-17
VRTDSP 4-18
REFLVL 4-18
RLUNIT 4-19
CAL4-20
ENCAL 4-21
FINE 4-22
RLMODE 4-22
RGMODE 4-23
PEAK 4-23
MINATT 4-24
MAXPWR 4-24
RFATT? 4-25
PLSTR 4-25
VIDFLT 4-26
SweepControl 4-27
TRIG 4-27
SIGSWP 4-28
TIME 4-29
DigitalStorage 4-30
AVIEW 4-30
BVIEW 4-31
SAVEA 4-31
BMINA 4-32
DSTORE 4-32
DRECAL 4-32
MXHLD 4-33
CRSOR 4-33
DisplayControl 4-35
REDOUT 4-35
GRAT 4-36
CLIP 4-36
GeneralPurpose 4-37
STORE 4-37
RECALL 4-38
RDATA 4-38
PLOT? 4-39
PTYPE 4-39
POFSET 4-40
ECR4-40
Section 5 MARKERSYSTEM
Usein Macros 5-1
NUM ArgumentValues 5-1
Page
Section 5 (continued)
WaveformFinding 5-1
SystemControl 5-1
MARKER 5-1
MTRACE 5-2
NSELVL 5-3
SGTRAK 5-4
MarkerPositioning 5-4
DPMK 5-4
MAMPL? 5-4
MCEN 5-5
MCPOIN 5-6
MEXCHG 5-6
MFREQ 5-6
MKTIME 5-7
MKDP 5-7
MLOCAT? 5-8
MTOP 5-8
MTUNE 5-8
MarkerFinding 5-9
HRAMPL 5-9
LRAMPL 5-9
BWNUM 5-10
BWMODE 5-10
MFBIG 5-10
MLFTNX 5-11
PKFIND 5-11
PKCEN .5-12
MMAX 5-12
MMIN 5-12
MRGTNX 5-13
THRHLD 5-13
MVLFDB 5-14
MVRTDB 5-14
STYPE 5-16
SGERR 5-19
Miscellaneous 5-19
ZOOM 5-19
Section 6 MACROS
NUM ArgumentValues 6-1
MathCommands 6-1
PLUS 6-1
SUBT 6-1
MULT 6-1
DIVIDE 6-2
RegisterCommands 6-2
PUTREG 6-2
EXCHG 6-3
INTEGR 6-3
POP6-3
ENTER 6-4
Branching and LoopingCommands 6-5
GOTO 6-5
LABEL 6-5
FOR6-6
IF6-7
RETURN 6-8
GOSUB 6-8
iv

2756PProgrammers
Page
Section6 (continued)
PrintCommands6-9
CLEAR6-9
DSLINE?6-9
TEXT6-10
MRDO?6-10
PRINT6-11
DataCommands6-12
MDATA6-12
READ6-12
MRESTO6-12
GeneralPurposeMacros6-13
PAUSE6-13
RUN6-13
DONE6-13
EMAC6-14
KILL6-14
MACRO?6-14
MCSTOP6-14
MEMORY6-15
STNUM6-15
MENU6-15
SWEEP6-15
VAR?6-16
STMAC6-16
GETWFM6-16
INPNUM6-17
Section7 DISPLAYDATAANDCRTREADOUTI/O
NUMArgumentValues7-1
UseinMacros7-1
WaveformTransfers7-1
WFMPRE7-1
CURVE7-4
WAVFRM?7-5
DPRE?7-5
DCOPY?7-6
CrtReadoutTransfers7-6
RDOUT7-7
TEXT7-7
UPRDO?7-8
MDRDO?7-8
LORDO?7-8
Section8 WAVEFORMPROCESSING
NUMArgumentValues8-1
UseinMacros8-1
WaveformFinding8-1
POINT8-1
FIBIG8-2
LFTNXT8-2
RGTNXT8-2
FMAX8-2
FMIN8-3
DataPointCommandsInteraction8-3
CENSIG8-3
TOPSIG8-4
Page
Section9 SYSTEMCOMMANDSANDQUERIES
NUMArgumentValues9-1
UseinMacros9-1
InstrumentParameters9-1
SET?9-1
INIT9-5
ID?9-5
HDR9-6
MessageExecution9-6
WAIT9-6
REPEAT9-6
StatusandErrorReporting9-7
EOS9-7
RQS9-7
SSR9-8
WARMSG9-8
StatusByte9-8
EffectofBusyonDevice-
DependentMessages9-9
EffectofBusyonInterface
Messages9-9
DT9-10
EVENT?9-10
ALLEV?9-10
ERR?9-11
ERCNT?9-11
NUMEV9-11
EVQTY?9-11
TEST?9-11
ErrorCodes9-12
Section10HELPSANDHINTS
ProgrammingTechniques10-1
SignalProcessing10-1
RunningProgramsWithouta
Controller(Macros)10-1
DataAcquisition10-1
SynchronizingControllerand
SpectrumAnalyzer10-2
SynchronizingwiththeSweep10-2
UsingtheEnd-of-SweepSRQ10-4
INPUT:AnSRQAlternative10-4
BinaryWaveformTransfer10-4
GettingSpectrumAnalyzerBinary
CurveOutput10-4
Sendinga BinaryCURVEtothe
SpectrumAnalyzer10-5
Scaling,Saving,andGraphing
WaveformData10-5
SavingtheScaledArray10-5
StoringSettings10-6
UsingPLOT10-6
UsingPLOTWithMacros10-6
MultipleUseofDisplayBuffer10-6
BufferDataFlow10-7
Order-DependentConflicts10-7
FindingSignalswithWaveform
Processing10-7
v

2756PProgrammers
Page
Section9 (continued)
UnderstandingHowWaveform
ProcessingWorks10-7
SettingtheThreshold10-8
AcquiringDataforWaveform
Processing10-9
SpectrumSearch10-9
MeasuringSignalFrequencyWith
COUNT10-9
UsingCOUNT—CF10-9
UsingMCEN10-10
HigherCenterFrequencyDrift
RateAfterTuning10-10
Noise10-10
UsingREPEATforSignalTracking
andSearches10-10
SpectrumSearchUsingREPEAT....10-10
MessagesontheCrtUsing
RDOUT.10-11
UsingCALOvertheBus10-11
ComparingFREQandTUNE10-11
UsingtheTimeMeasurementFeature.10-11
UsingMultibandSweep10-12
ComparingtheStatusByteand
theERR?Response10-13
ExecutionandTransferTimes10-13
Page
AppendixA IEEESTD488(GPIB)SYSTEM
CONCEPTS
MechanicalElementsA-1
ElectricalElementsA-1
FunctionalElementsA-1
ATypicalGPIBSystemA-2
Talkers,Listeners,andControllersA-2
InterfaceControlMessagesA-2
Device-DependentMessagesA-4
GPIBSignalLineDefinitionsA-6
TransferBus(Handshake)A-6
ManagementBusA-6
InterfaceFunctionsandMessagesA-8
RL(Remote-LocalFunction)A-8
T/TEandL/LE(TalkerandListener
Functions)A-8
SHandAH(SourceandAcceptor
HandshakeFunctions)A-9
DC(DeviceClearFunction)A-9
DT(DeviceTriggerFunction)A-9
C,SR,andPP(Controller,Service
Request,andParallelPoll
Functions)A-10
TakingControl(Asynchronousor
Synchronous)A-10
PassingControlA-10
Performinga SerialPollA-10
Performinga ParallelPollA-10
AppendixB PROGRAMMINGFUNCTIONS
ProgrammingSummary
Notes
StatusByte
InterfaceMessages
CommandsandQueries
QuickReferencetoCommandsand
Queries
SampleMacros
MacroPreparation
Pass/FailHarmonicTest
Macros(Continued)
HarmonicMacroTest
OutputFortheHarmonicMacro
Test
Front-PanelRelationshiptoMnemonics
ERR7/ERCNT?Responses
ERR?Responses(NumericalOrder)
vi

2756PProgrammers
LISTOFILLUSTRATIONS
Figure
Number Page Figure
Number Page
1-1
1-2
1-3
1-4
1-5
1-6
4-1
4-2
4-3
4-4
4-5
4-6
4-7
TEKTRONIX2756PProgrammable
SpectrumAnalyzerx
GPIBpushbuttonandindicators1-1
StatusofactiveGPIBfunctions1-2
Rear-panelGPIBADDRESSswitches1-3
Effectofmessageterminatorswitchfor
inputandoutput1-4
Therear-panelIEEESTD488PORT(GPIB)1-5
Thespectrumanalyzercanbeconnectedtoa
GPIBsystemineithera starora linear
pattern1-6
Front-panelFrequencycommands4-3
Front-panelFrequencySpanandResolution
commands4-12
Front-panelVerticalDisplayandReference
Levelcommands4-17
Front-panelSweepControlcommands4-27
Front-panelDigitalStoragecommands4-30
Front-panelDisplayControlcommands4-35
Front-panelGeneralPurposecommands4-37
5-1UsingthePKFINDcommand5-12
5-2Locatingthesignalpeak5-15
5-3Signalfindingexample5-16
5-4Signalfindingexample5-17
5-5Signalfindingexample5-17
5-6Signalfindingexample5-18
5-7Signalfindingexample5-19
6-1INPNUMexample6-18
7-1Waveformdatarelatedtothedisplay7-5
9-1Testconversionchart9-13
10-1Synchronizingcontrollerandspectrum
analyzerfordataacquisition10-3
10-2Howmultipleuseofthedisplaydatabuffer
iscontrolled10-8
A-1IEEEStd488(GPIB)connectorA-1
A-2A typicalGPIBsystemA-3
A-3ASCII& GPIBCodeChartA-5
A-4Anexampleofdatabytetrafficonthe
GPIBA-7
A-5A typicalhandshaketimingsequenceA-7
LISTOFTABLES
Table
NumberPage
1-1BusAddresses1-3
1-2SpectrumAnalyzerIEEE488Interface
Functions1-4
4-1Front-panelCommandsandQueries4-1
4-2ResolutionBandwidthSelection4-15
4-3ReferenceLevelSteps4-19
4-4CalibrationCodes4-21
5-1MarkerTraceOrganization5-2
Table
NumberPage
6-1ErrorMessages6-14
9-1InstrumentFunctions9-5
9-2WarningMessages9-8
9-3TestConversion9-12
9-4ErrorandEventCodes9-14
10-1ExecutionandTransferTimes10-14
A-1MajorGPIBInterfaceFunctionsA-2
A-2InterfaceMessagesandFunctionsA-4

2756PProgrammers
SAFETYSUMMARY
(Referallservicingtoqualifiedservicingpersonnel)
Thesafetyinformationinthissummaryisforboth
operatingandservicingpersonnel.Specificwarningsand
cautionswillbefoundthroughoutthemanualwherethey
apply,butmaynotappearinthissummary.
CONFORMANCETOINDUSTRY
STANDARDS
AsMarkedonEquipment
CAUTIONindicatesa personalinjuryhazardnot
immediatelyaccessibleasonereadsthemarking,ora
hazardtoproperty,includingtheequipmentitself.
DANGERindicatesa personalinjuryhazardimmedi-
atelyaccessibleasonereadsthemarking.
ThisinstrumentcomplieswiththefollowingIndustry
SafetyStandardsandRegulatoryRequirements.
SYMBOLS
Safety
CSA:ElectricalBulletin
FM:ElectricalUtilizationStandardClass3820
ANSIC39.5— SafetyRequirementsforElectrical
andElectronicMeasuringandControlling
Instrumentation.
IEC348(2ndedition)— SafetyRequirementsfor
ElectronicMeasuringApparatus.
InThisManual
A Thissymbolindicateswhereapplicablecau-
tionaryorotherinformationistobefound.
AsMarkedonEquipment
DANGER— Highvoltage.
RegulatoryRequirements
VDE0871ClassB — RegulationsforRFISup-
pressionofHighFrequencyApparatusandInstal-
lations.
A
©
Protectiveground(earth)terminal.
ATTENTION— refertomanual.
Refertomanual
TERMS POWER
InThisManual
CAUTIONstatementsidentifyconditionsorpractices
thatcouldresultindamagetotheequipmentorother
property.
WARNINGstatementsidentifyconditionsorpractices
thatcouldresultinpersonalinjuryorlossoflife.
PowerSource
Thisproductisintendedtooperatefroma power
sourcethatwillnotapplymorethan250V rmsbetween
thesupplyconductorsorbetweeneithersupplyconduc-
torandground.A protectivegroundconnectionbyway
ofthegroundingconductorinthepowercordisessential
forsafeoperation.
viii

2756PProgrammers
IGroundingtheProduct OPERATIONALPRECAUTIONS
Thisproductisgroundedthroughthegroundingcon-
ductorofthepowercord.Toavoidelectricalshock,plug
thepowercordintoa properlywiredreceptablebefore
connectingittothepowerterminal.A protectiveground
connectionbywayofthegroundingconductorinthe
powercordisessentialforsafeoperation.
DangerFromLossofGround
Uponlossoftheprotective-groundconnection,all
accessibleconductiveparts(includingknobsandcon-
trolsthatmayappeartobeinsulating)canrenderan
electricshock.
UsetheProperPowerCord
Useonlythepowercordandconnectorspecifiedfor
yourproduct.
Useonlya powercordthatisingoodcondition.
CSAcertificationappliestothespectrumanalyzer
withCSA-certifiedpowercordsonly(thepowercord
shippedwithyourinstrumentandTektronixOptionA4).
Internationalpowercords(TektronixOptionsA1,A2,A3,
landA5)areapprovedonlyforthecountryofuse,and
arenotincludedintheCSAcertification.
Refercordandconnectorchangestoqualifiedser-
vicepersonnel.
Fordetailedinformationonpowercordsandconnec-
tors,seetheMaintenancesectionintheServiceManual,
Volume1.
DoNotOperateinExplosiveAtmospheres
Toavoidexplosion,donotoperatethisproductinan
explosiveatmosphereunlessithasbeenspecifically
certifiedforsuchoperation.
DoNotRemoveCoversorPanels
Toavoidpersonalinjury,donotremovetheproduct
coversorpanelsunlessyouarequalifiedtodoso.Do
notoperatetheproductwithoutthecoversandpanels
properlyinstalled.
Dangerousvoltagesexistatseveralpointsinthis
product.Toavoidpersonalinjury,donottouchexposed
connectionsandcomponentswhilepowerison.REFER
ALLSERVICINGTOQUALIFIEDSERVICEPERSONNEL.
UsetheProperFuse
Toavoidfirehazardorequipmentdamage,useonly
thefuseofcorrecttype,voltagerating,andcurrentrating
foryourproduct(asspecifiedintheReplaceableElectri-
calPartslistinVolume2 oftheServiceManual).Refer
fusereplacementtoqualifiedservicepersonnel.
ix