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Tektronix 071-0590-00 user manual Using GPIB, RS-232

Models: 071-0590-00

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Using GPIB, RS-232

D-12	GB1400 User Manual

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Tektronix 071-0590-00 user manual Using GPIB, RS-232

Contents

This document supports firmware version 2.2 and above Page Warranty How to Reach Customer Service TEK-WIDETable of Contents Tutorial Table of Contents Menus Gpib Theory of Operation Glossary Glossary-1 Index Index-1List of Figures List of Tables Safety SMA Connectors Behavior of Outputs Turning Power On or OffDo Not Remove Instrument Covers Static Sensitive Device NoticeHow This Manual is Organized ConventionsRelated Manuals Xvi Getting Started GB1400 Pattern Generator and Error Detector FeaturesSymmetrical, Low-Jitter Output Waveforms ApplicationsPrbs Or User-Defined Test Patterns Sample ApplicationsAdjustable Inputs For Maximum Flexibility Auto Search For Easy SetupPowerful Analysis And Reporting Functions Burst ModeOrdering Information GigaBERT GB1400GB1400T GB1400RGB Comparison GB660/CSA907A GB700 GB1400 Feature Tx and Rx GB1400 Instrument Configurations Standard and Burst Option GB1400 with Burst OptionInitial Self-Check Procedure ProcedurePage Operating Basics Functional Overview Bert Basics GB1400 Example, Bert ApplicationClock Data Controls, Indicators and Connectors Front Panel, GB1400 Generator TxFront Panel, GB1400 Analyzer RX Display Formats 1405000 PN23Generator Tx Display Frequency kHz Pattern OutputFrequency kHz Error Rate Totalize Delay/ Memory1405000 0E-06 2410538 PN23 Analyzer RX DisplayPage = clock bar = not clock Generator Output Connectors SectionOutputs and Inputs Generator Clock Section Generator Output Section Generator Rear Panel Changing the Line FuseAnalyzer Input Section Analyzer Monitor Section Analyzer Rear Panel Connectors, Terminations, and Levels DATA/DATA BAR Controls and Indicators Power SwitchesReset to Factory Default View Angle and Panel Lock KeysGpib Section Controls Pattern Controls and Function Keys Function Soft Keys F1, F2, F3, and F4 Analyzer InputsGenerator Error Inject Section Affected Input Allowable Control Analyzer Error History Section Sync LossAnalyzer Error Detection Section Analyzer Sync ControlsBurst Mode Option Burst Mode Usage Specifications for Burst ModeTransmitter Burst Mode Option Data ValueECL Levels Pecl Levels Display SettingPecl Option for GB1400 Tx Basic Bert testing with the GB1400 Key Feature of TutorialObjective of Tutorial Equipment RequiredSetup units with default settings Instrument Connections and ControlsSetup Generator for PRBS-23 Mode Connect the Generator to the AnalyzerSetup Analyzer for AUTO-SEARCH Operation Change the Prbs pattern type Turn off Auto Search and change Generator OutputsKey several times to setup the analyzer for totalize Data signal not detected. Selected Your data signalError Rate display shows no Data or a 50% Error Rate You are starting to detect the data signalThis Concludes the Tutorial Applications Two Auto Search Synchronization MethodsPhase Application Note Auto Search Synchronization Auto Search will find the Data V-THRESHOLD voltage Auto Search will find the Data DelayAuto Search Algorithm Fast Method Auto Search will then attempt to find the Data Pattern II. Auto Search Algorithm BER MethodAuto Search will find the Data Pattern and Polarity Auto Search will determine the Data Delay Page Consideration In Determining The Data Eye Center Delay SpecificationsConsideration In Determining The Eye Data Width GB700/ GB1400 Optical Component Test Fiber Optic Link Test ExampleFibre Channel Link Testing Parallel and High-speed Serial Testing Qpsk Modems, I & Q QpskQpsk BER Testing using Prbs Data for 2-Channel I & Q Channel BertApplication Example Reference Turning Instrument Power ON/OFF Menu OverviewFunctions Common to Generator TX and Analyzer RX Selecting 115 VAC or 230 VAC OperationRecalling the Default Setup Selecting a PatternLocking the Front Panel Pattern DefinitionsSelecting the Active Pattern Selecting Prbs PatternsSelecting the Current Word Pattern Prbs 2n-1 Test PatternsSelecting RECALLing a Saved Word Pattern WordCreating Word Patterns Using Front Panel Controls Word PatternsBasics Standard InstrumentsInstruments Equipped with 1-Mbit Option Order Creating Word Patterns Using MenusLength Fill Creating Word Patterns Under Remote Control Saving Word Patterns 1-Mbit Memory Option Recalling Word Patterns 1-Mbit Memory OptionGenerator TX Functions Clock Source and FrequencyExternal Clock Input Clock SourceSaving a Frequency Recalling a FrequencyData and Clock Outputs OverviewGenerator Clock and Data Output Equivalent Circuits Output Setup Rules vs. Termination Impedance Amplitude and Baseline OffsetLogically Inverting Output Data D-INV Procedure for Single-ended Operation TX only Procedure for Differential Operation TX onlySingle-ended or Differential Operation Pattern Sync and CLOCK/4 OutputsError Injection Selecting an Error Inject ModeData Inhibit Logic Error Inject InputProcedure to Control Error Injection Mode Automatic Setup Functions Sync Disable KeyAnalyzer RX Functions Auto Search KeyActions Taken by Analyzer when Synchronization is Lost Auto Search With Prbs PatternsAuto Search with Non-PRBS Patterns How to Disable Automatic Pattern ResynchronizationRelationship between Auto Search and Disable Synchronization Threshold Procedure to Set Sync ThresholdSynchronization Lock Threshold Clock, Data, and Reference Data Inputs Input ParametersInput Data Delay How F2 and F3 Determine Which Input Can be Set UpProcedure to Add Delay ControlsInput Terminations for CLOCK, DATA, and REF Data Procedure for Selecting Input TerminationInput Termination Input Threshold Range as a Function of Termination Input Decision ThresholdLogically Inverting Input Data Singled-ended or Differential Operation Selecting the Reference Data ModeProcedure for Selecting the Reference Data Mode Output Setup Monitor OutputsError Detection Set Up BERHow Totalize Results are Measured How Window Results Are MeasuredHow Test Results Are Measured Window Measurement ProcessTest Measurement Process Display Mode Totalize, Window, or Test Totalize Process Set UpProcedure to Select a Results Display Mode How to Tell Which Display Mode is ActiveWindow Process Set Up ProcedureTest Process Set Up BER and Bit Errors Procedure to View Desired BER and Bit Error ResultsViewing Results All Other Results Test Process onlyBasic Report Setup Procedure Printing Results ReportsAnalyzer Setup Report Example Analyzer Setup ReportExample End-of-Test Report Procedure to Enable or Disable End-of-Test ReportsEnd-of-Test Reports Example End-of-Window Report Procedure to Enable or Disable End-of-Window ReportsEnd-of-Window Reports On-Error Reports Example On-Error ReportProcedure to Enable On-Error Reports Procedure to Generate an On-Demand Test Summary ReportAll Other Results Test Intervals Only Result DefinitionsBER = TE / TB ES = TSE US Error History Indicators Analyzer performance history indicators areLocated in the Error History section of the front Panel. These indicators will latch on when the indicatedAnalyzer Error Messages Procedure To Set Up the Audio Alert FunctionClear Control Audio Beeper FunctionStarting and Stopping Measurements Procedure for Starting the Test Measurement ProcessProcedure for Stopping the Test Process Starting New Totalize and Window Measurement Intervals Functions Performed Using the Menu System Example Procedure Illustrating Menus and FunctionsMenus Menu and Function PagesMore Length Mode Report F1ESC F4SET Test Mode = Untimed F1ESC F4SET Reports on = EOT/ERROR General Rules for Using the Menu System Menu Summaries 10. Menu Descriptions11. Analyzer Menu System Overview 12. Generator Menu System Overview WordMenu Function Definitions F1ESC F2- -F3 F4SET Word AT ddddd = bbbbbbbbWord Edit Edit FormatWord Length F1ESC F2- -F3 F4SET LENmmmmm Bytes + n BitsWord Length Length Fill Word Memory WITHhh Word Fill FillWord Order F1ESC F4SET Word Order = ccc FirstWord Order Order Word Sync Word Sync Thres LEVEL= dWord Synchronization Threshold Sync Buffer BufferAuto Fast BERTest Length F1ESC F2- -F3 F4SET Test Length = hhmmssTest Length Length Test Mode F1ESC F4SET Test Mode = cccccccTest Mode Mode Test Report F1ESC F4SET Reports on = cccccccccTest Reports Report Test Thres F1ESC F4SET Error Threshold = eeeeeTest Threshold Thres Test Squel On Error Squelch = cccTest Squelch Squel Test Print Print Test PrintTest VIEW-PRE F1ESC F4SET result namecount %Test View Previous VIEW-PRE Test View Current VIEW-CUR Test VIEW-CURWindow Mode F1ESC F4SET Window Mode = cccccccWindow Mode Mode Format F1ESC F4SET Window LEN = 1.0eEE BitsWindow Interval in Bits Bits Window BitsWindow Second F1ESC F2- -F3 F4SET Window LEN = hhmmssWindow Interval in HrsMinSec Second Window Report END of Window Print = cccWindow Reports Report Baud Baud = ddddRS-232 Baud Rate Baud Parity F1ESC F4SET Parity = ccccRS-232 Parity Parity Size Size = dRS-232 Data Bits Size EOL F1ESC F4SET EOL = cccccRS-232 End-of-Line Char. EOL XON/XOFF F1ESC F4SET XON/XOFF Enable = cccRS-232 Xon/Xoff XON/XOFF Echo F1ESC F4SET RS232 Echo Enable = cccRS-232 Echo Echo F1ESC F4SET Terminator = cccccc Utility Option Option Util OptionUtility Version VER Util VERDate F1ESC F2- -F3 F4SET Date = mmm dd yyTime Option Date Time F1ESC F2- -F3 F4SET Time = hhmmssTime Option Time Reference Appendices GB1400 Generator TX Internal Clock SourceExternal Clock Source SMAData Patterns Data Output True and ComplementRear Panel Auxiliary Outputs Phase A, Phase B, Clock/2 Error InjectionClock Output True and Complement NRZ-LMechanical AC-Power RequirementsRS-232 and Gpib Interfaces Data Input GB1400 AnalyzerClock Input Reference Data Input AUX SynchronizationMeasurements BERPrinter Interface Specifications Bert Primer/ Technical Articles Bert Building Blocks Bert DefinitionBert used to test physical layer Bert Pattern Generation Prbs PatternsPrbs Prbs Generation Circuits a few sample diagrams DoutputOther Tx Patterns Bert Receiver or Error Analyzer Components Bert ClockOutput Amplifiers Data Coding, NRZError Comparator Received Data Pattern ReferenceData Input Amplifiers BER ComputationConfidence Requires Collecting Many Errors Stress TestingConfidence Level in BER Measurement Additional ReadingAuto-Synch Other Bert FeaturesEye Width Measurement Pattern Loading Software Error InsertionPattern Lock Jitter Generation Bit error rate testing How long is long enough? BER Ideal pulse Stressing through pattern generation Bert Technical Articles Bert Technical Articles Bert Technical Articles Ensure Accuracy Of Bit-Error Rate Tests Page Supplying Data Patterns BertNoise-Margin Stressing Μ F Avergage = Average = Page Data patterns for clock recovery stressing Data Patterns Stored+ Peak Examining Jitter2f BΦ θif B Amplitude UI peak-to-peak Frequency Jitter ToleranceBert Affects Accuracy Example of Error Rate Measurement AbstractBER Measurement Inaccuracy versus Test Time = n / TInaccuracy 95% = 2 σ / n ≈ 2/ n Testing for an Upper Limit on Error Rate Reduced Test Time by StressingSNR = 20 log S / N rms Attenuation dB Example BERExample BER Summary Poisson Error Process Pn = rT n e−rT . nBER Biography Remote Commands Type of Commands Starts onOverview Datathres DATATHRES?Command Line Rules Command Line TerminatorSetting Arguments Outside of Legal Ranges Command Examples Command Summary Alphabetical Bytesync n Analyzer only Bytesync? Remote Commands Rescurrate? Tse? Cls Ese nIdn? Ese?Esr? Opc? Lrn?Opc Rst Sre nSre? Stb?Tst? WaiTse v Analyzer Only Tse? Analyzer OnlyTsr? Analyzer Only Datapattern prbs word rdata Datainvert onoffDatainvert? Prbslength? Datapattern?Prbslength Wordbits l, b1 b2 Recallword mSaveword m Wordmemlen m, l Wordbits?Wordlength l Wordmemord? m Wordmemord m, msb lsbWordmemord? Wordmemory m, l, b1, b2 Wordmemory? mWordorder msb lsb Example Wordorder lsbPage Wordorder? Memory allocation for Word Memory storageWordmemory? Gpibbus offbus talklisten GpibaddressGpibaddress? Gpibbus? Rsecho onoffRsecho? Rspmtlf onoffRspmtlf? Rsprompt sRsxonxoff onoff Rspmtlf onRsxonxoff? Allmem? Wordmemory 0, 16, #HAA, #HBB Wordmemory 1, 8, #HF0Logo? Header on offHeader? Options? ViewangleViewangle? ViewangleClockmemory? ClockfreqClockfreq? Clockmemory m, f Clockmemory? mClocksource intext Clocksource?Clockstep Clockstep?Clockstpup and clockstpdn Clockstpup v and clockstpdnRecallfreq m Savefreq mClockampup and clockampdn AmplitudeAmplitude? Clockampup v and clockampdn ClockamplClockampl? Clockoffup and clockoffdnClockoffup v and clockoffdn ClockoffsetClockoffset? Dataampup and dataampdnDataampup v and dataampdn DataamplDataampl? Dataoffup and dataoffdnDataoffset? Dataoffup v and dataoffdnDataoffset Offset Offset?Errorsingle Errorrate offextrate3rate4rate5rate6rate7Errorrate? Analyzer Commands Resbits? Rescurrate?Resefs? Resdm?Resdmper? Reselapsed? Reserrors?Resefsper? Reslos? Reses?Resesper? Ressesper? Resphaes?Resses? Ressync? Resstart?Resstop? Restotrate? Restes?Restesper? Totalbits? Resus?Resusper? Totaltime? Totalerror?Totalrate? Clockterm neg2v gnd ac Clockterm?Datadelup and datadeldn Datadelup v and datadeldn DatadelayDatadelay? Dataterm neg2v gnd ac Dataterm?Datathres Datathrup and datathrdnDatathrup v and datathrdn Rdatadelup v and rdatadeldn Datathres?Rdatadelup and rdatadeldn Rdatadelay Rdatadelay?Rdataterm neg2v gnd ac Rdataterm?Rdatathres Rdatathrup and rdatathrdnRdatathrup v and rdatathrdn Rdatathres? Autosearch auto off disab Autosearch?Automode ber, fast Automode?Autosample n Autosample?Autowidth? Autothresh nAutothresh? Dispselect? ErrorresetDispselect total window test Histrybits? HistryclearHistryphase? Histrypower?Histryphase on Histrystat?Histrysync? Sync?Testlength? TestdiscardTestlength t Testprev currentprevious Testmode untimedtimedrepeatTestmode? Testprint Testreport eotonerrorbothnoneTestprev? Testsquelch? Testreport?Testsquelch onoff Teststate runstop Teststate?Testthres Testthres?Winerror? WinbitlenWinbitlen? Winbits?Winmode bitssec Winmode?Winprev currentprevious Winprev?Winreport? Winrate?Winreport onoff Wintime? Winseclen sWinseclen? Printport parallel gpib serial Printenable onoffPrintenable? Printport Parallel Printport?Printstring s Audiorate Audioratup and audioratdnAudioratup v and audioratdn Audiovol? Audiorate?Audiovol Audiovolup and audiovoldn Audiovolup v and audiovoldnDate yyyy-mm-dd Date?Time s Time?MB Option Commands Byteblock a, i, b1, ..., bn Byteblock? a Bytedelete a Byteedit a, b1 Byteedit? aBytefill i, b1, b2, ..., bn Byteinsert a, i, b1, ..., bnBytelength m, n Bytelength?Bytemode n Bytemode?Ratio errors/bits Bytesync n Analyzer onlyBytesync? Analyzer only LevelEditbegin n Editcntrl? Editend n102 Using the Gpib Interface Gpib Interface Device SettingsInterface Functions Gpib Connector Pin-OutsProgramming Gpib Remote Commands Status Byte Gpib Numeric ResponsesGpib Status Reporting Standard Event Status Register Service Request EnableService Request SRQ Test Status Event Register Analyzer only Standard Event Status Enable RegisterTest Status Event Enable Register Analyzer only Gpib Common Commands Additional SRQ Gpib Commands Rx onlyPower-on settings IEEE-488.2 Programming Manual RequirementsSpecific Command Implementations Overlapped vs. Sequential CommandsFunctional Elements Self Test QueryUsing the RS-232 Interface Option RS-232 Interface Device SettingsRS-232 Interface Testing RS-232 Interface Hardware/ Handshaking ConsiderationsProgramming RS-232C Remote Commands RS-232C Error Messages Using GPIB, RS-232 Customer Acceptance Test For GB1400 Generator & Analyzer Performance Verification Functional Test Setup for Functional Test of Standard Instrument Confirmation of Frequency Function Confirmation of Generator Output Data Level Change Confirmation of Error Injection Rates Confirmation of Selectable Analyzer Terminations Performance Verification Confirmation of Buttons and Indicators Panel Lock On OFF Addr Returning to Factory Default Settings How to Recall Factory Default SettingsUsing Front Panel Controls Via Remote ControlCLOCK/ Data Outputs Generator TX Factory Default SettingsData Pattern Remote Interfaces EOI/LFCR/LF MiscAuto Search/Pattern Synchronization Analyzer RX Factory Default SettingsError Beeper Time and Date PrinterCurrent BER Test ParametersMisc Cleaning the Interior Cleaning the ExteriorCleaning the CRT Cleaning Instructions Before You Begin Pattern Editor Requirements and FeaturesWhat is MLPE? List of Features Minimum RequirementsIf you are using an alternate shell, such as Norton Desktop List of Files on this DiskRS-232 Cabling Page Page Read Before Opening Sealed Wrapper Pattern Editing Software Pattern Editing Software Pattern Editing Software Data Generator PCB Design OverviewPLL Clock Source PCB Data and Clock Output Amplifier PCB GB1400 Analyzer RX Input Amplifier PCBFront Panel PCB Error Counter PCBCommon to both GB1400 TX and GB1400 RX GB1400 Tx Figure I-2. Block Diagram GB1400 RX Glossary/ Index Bit Error AddressAnalog-to-Digital Converter AttenuationError Detection Bit RateByte ChannelResidual error rate Multi-Channel CableNoise RS-232CGlossary-4 Auto Search AppendicesFigures Index-3 Tables