Agilent Technologies 71501D User Manual

Agilent 71501DEye-Diagram AnalysisUser’s Guide

Getting StartedSteps for Setting Up Eye-Diagram AnalysisSteps for Setting Up Eye-Diagram Analysis1 Connect the equipment.2 Load the eye-diagram person

Eye-Diagram Analyzer ReferenceControlling the Display User-Corrections Applied to the Data To View 70820A Menus Press MENU.To Return to the Jitter Ana

3-21Eye-Diagram Analyzer ReferenceControlling the DisplayTo View the Date and Time There are two clocks that can be displayed on the screen: the displ

Eye-Diagram Analyzer ReferenceControlling the Display3 To select US or European display format, press US|EURO US or:US|EURO EURO 4 To change the time

3-23Eye-Diagram Analyzer ReferenceCalibrating the Eye-Diagram AnalyzerCalibrating the Eye-Diagram Analyzer Note For information on user-corrections an

Eye-Diagram Analyzer ReferenceCalibrating the Eye-Diagram Analyzer1 Connect a low-loss cable between the front-panel CALIBRATOR OUTPUT and channel 1 c

3-25Eye-Diagram Analyzer ReferenceDisplaying TracesDisplaying Traces Four Traces can be Displayed The Traces menu’s select: softkey allows you to disp

Eye-Diagram Analyzer ReferenceDisplaying TracesTo Position and Scale Each Trace The selected trace can be positioned vertically on the display. This i

3-27Eye-Diagram Analyzer ReferenceDisplaying Traces The Averaging Submenu Average trace 1 by pressing: Traces, average, AVERAGE SWEEPS and enter the n

Eye-Diagram Analyzer ReferenceDisplaying Traces The Persistence Submenu Infinite Monochrome Persistence With infinite monochrome persistence ( INFIN

3-29Eye-Diagram Analyzer ReferenceDisplaying Traces1 green 2 cyan (light blue) 3 purple 4 rose 5 yellow This persistence works best with high values o

1-5Getting StartedSteps for Setting Up Eye-Diagram AnalysisNote When used with an 71612A/70843, the system requires a manual configuration.Set Up the

Eye-Diagram Analyzer ReferenceUsing MarkersUsing Markers Use this menu to activate the four available line markers: X1, X2, Y1, and Y2. Markers a

3-31Eye-Diagram Analyzer ReferenceApplying Mask TestingApplying Mask Testing Use the Masks menu to display and control mask testing. Built in standard

Eye-Diagram Analyzer ReferenceApplying Mask TestingAutomatic Alignment Scales the Mask The MASK ALIGN softkey, located under the Masks menu, automat

3-33Eye-Diagram Analyzer ReferenceApplying Mask Testing The Mask Setup Submenu

Eye-Diagram Analyzer ReferenceSaving to Mass StorageSaving to Mass Storage Use the Mass Storage menu, to save and recall files to a mass storage d

3-35Eye-Diagram Analyzer ReferenceSaving to Mass Storageas long as the card’s battery has sufficient power. You should change the bat-tery every two y

Eye-Diagram Analyzer ReferenceSaving to Mass StorageGPIB Disk Drives Measurement data and files can be saved on an external GPIB disk drive. The di

3-37Eye-Diagram Analyzer ReferenceSaving to Mass StorageInitializing (formatting) a memory card CAUTION The following steps erase any files stored

Eye-Diagram Analyzer ReferenceSaving to Mass Storage4 Enter the disk drive’s unit number by pressing: UNIT NUMBER This number is typically a 0 or 1. Z

3-39Eye-Diagram Analyzer ReferenceSaving to Mass StorageTo Change a Memory Card Battery The memory card’s battery is a lithium commercial CMOS type,

Getting StartedSteps for Setting Up Eye-Diagram AnalysisEye Mode The eye mode displays traces using individual dots in a manner that is similar to co

Eye-Diagram Analyzer ReferenceSaving to Mass StorageWorking with Files Files are identified by a prefix and a name. The eye-diagram analyzer as

3-41Eye-Diagram Analyzer ReferenceSaving to Mass StorageTo Duplicate a Memory Card Instrument BASIC provides the ability to mass copy all the files fr

Eye-Diagram Analyzer ReferenceSaving to Mass Storage6 Issue the following Instrument BASIC command to copy the files from the RAM disk to the new card

3-43Eye-Diagram Analyzer ReferenceSaving to Mass StorageEntering a File Name without a Keyboarda Turn the front-panel knob to move the character-selec

Eye-Diagram Analyzer ReferenceSaving to Mass StorageTo Erase all Files CAUTION This procedure erases all files stored in default memory. To erase al

3-45Eye-Diagram Analyzer ReferenceSaving to Mass StorageTo Erase a Custom Prefix 1 To erase a custom prefix, press: MENU, page 1 of 2, States, more 1

Eye-Diagram Analyzer ReferenceSaving to Mass StorageTo Save a Mask/Limit Line File 1 Display the Mass Storage menu by pressing: States, more 1 of 2,

3-47Eye-Diagram Analyzer ReferenceCreating Copies of the DisplayCreating Copies of the Display Often, it is important to create hard copies of the

Eye-Diagram Analyzer ReferenceCreating Copies of the Display4 Select the print option by pressing: ←, copy options, COPY IS PRT/PLT PRT 5 Create the p

3-49Eye-Diagram Analyzer ReferenceAgilent 70820A User-CorrectionsAgilent 70820A User-CorrectionsUser corrections provide a convenient method for modif

1-7Getting StartedSteps for Setting Up Eye-Diagram AnalysisEyeline Mode : Eyeline mode displays continuous traces. Use this mode for the following: •

Eye-Diagram Analyzer ReferenceAgilent 70820A User-Corrections Example User-Corrections User corrections always contain at least two default lines of d

3-51Eye-Diagram Analyzer ReferenceAgilent 70820A User-Corrections Default Data Enter user-correction data by: manually using front-panel keys or stori

Eye-Diagram Analyzer ReferenceAgilent 70820A User-CorrectionsTo Delete a Channel’s User-Corrections 1 Delete a channel’s user-corrections by pressing:

3-53Eye-Diagram Analyzer ReferenceAgilent 70820A User-CorrectionsThe following two figures show the effect of selecting linear slope and flat types. T

Eye-Diagram Analyzer ReferenceAgilent 70820A User-CorrectionsTo Enter a Line of Data 1 Enter a line of data by pressing: MENU, page 1 of 2, Calib, use

3-55Eye-Diagram Analyzer ReferenceAgilent 70820A User-CorrectionsTo Edit a Line of Data 1 To edit a line of data, press: MENU, page 1 of 2, Calib, use

Eye-Diagram Analyzer ReferenceAgilent 70820A User-CorrectionsTo Copy User-Correction to Alternate Channel Copy user correction to an alternate channel

3-57Eye-Diagram Analyzer ReferenceAgilent 70820A User-CorrectionsTo View User-Corrections 1 To view user-corrections, press: MENU 2 To enter the Trace

Eye-Diagram Analyzer ReferenceAgilent 70820A User-Corrections7 Set the frequency scale of the user-correction trace: • If the microwave transition ana

3-59Eye-Diagram Analyzer ReferenceAgilent 70820A User-CorrectionsSaving, Recalling, and Cataloging User-Correction Files User-correction data can b

Getting StartedSteps for Setting Up Eye-Diagram AnalysisPattern Mode Pattern mode displays the actual PRBS data stream bits. This mode uses the patte

Eye-Diagram Analyzer ReferenceAgilent 70820A User-CorrectionsTo Recall a User-Correction File 1 To recall a user-correction file, press: MENU, page 1

3-61Eye-Diagram Analyzer ReferenceAgilent 70820A CalibrationAgilent 70820A CalibrationUse the Calibration menu to perform the following tasks: • Mat

Eye-Diagram Analyzer ReferenceAgilent 70820A CalibrationThe Calibration Menu Turning Off RF Correction The microwave transition analyzer module applie

3-63Eye-Diagram Analyzer ReferenceAgilent 70820A CalibrationMatching Delay Between Channels Significant delays can occur between the signals on chan

Eye-Diagram Analyzer ReferenceAgilent 70820A CalibrationTrace 2 Delay Compensated To Delay a Channel Automatically compensate channel 2 by pressing: M

3-65Eye-Diagram Analyzer ReferenceAgilent 70820A CalibrationNote Warm up time Allow the microwave transition analyzer module to warm up for at least o

Eye-Diagram Analyzer ReferenceAgilent 70820A CalibrationViewing the Calibration Data The ability to view the IF calibration data is mainly intended fo

3-67Eye-Diagram Analyzer ReferenceAgilent 70820A CalibrationTo View Hardware Response Traces 1 Display the traces menu by pressing: MENU, Traces 2 Tu

Eye-Diagram Analyzer ReferenceAgilent 70820A Calibration7 To display the various hardware responses, press: page 1 of 2, SHOW CAL Use the front-pan

3-69Eye-Diagram Analyzer ReferenceAgilent 70820A Calibration5 To view the data for channel 1, press: CH1 CAL INFO 6 To view the data for channel 2, p

1-9Getting StartedSteps for Setting Up Eye-Diagram AnalysisApply software filters in eyeline mode In eyeline mode, user frequency corrections can be a

Eye-Diagram Analyzer ReferenceAgilent 70820A CalibrationTo Turn the Calibrator Signal On To turn the calibrator signal on, press: MENU, page 1 of 2, C

4Programming Commands

Programming CommandsProgramming CommandsProgramming CommandsThis chapter documents programming the eye-diagram analyzer. Note You will find the previe

4-3Programming CommandsIntroductionIntroduction Before communicating with the eye-diagram analyzer application, the Instru-ment BASIC system must be q

Programming CommandsIntroductionPROG:WAIT? query to indicate when the 70874C has paused. Then, retrieve the response using the PROG:STR? query. Use P

4-5Programming CommandsIntroductionBIT The BIT command string sets the instrument’s time scale (seconds-per-divi-sion) to a value which corresponds to

Programming CommandsIntroductionExample OUTPUT Mta;"PROG:STR ’Command’,’CLEAR’" OUTPUT Mta;"PROG:WAIT?" ENTER Mta;A$ OUTPUT Mta;&

4-7Programming CommandsIntroductionDELAY The DELAY command string sets the displayed delay value to the number of bits specified in the Param variable

Programming CommandsIntroductionExample OUTPUT Mta;"PROG:STR ’Param’,’EYELINE’" OUTPUT Mta;"PROG:STR ’Command’,’DIAGRAM’" OUTPUT

4-9Programming CommandsIntroductionExample OUTPUT Mta;"PROG:STR ’Command’,’EXTIN’" OUTPUT Mta;"PROG:WAIT?" ENTER Mta;A$ OUTPUT Mt

Getting StartedSteps for Setting Up Eye-Diagram AnalysisThree sweep selections are available • single• continuous• stoppedWith the continuous selectio

Programming CommandsIntroductionExample OUTPUT Mta;"PROG:STR ’Param’,’ON’" OUTPUT Mta;"PROG:STR ’Command’,’MARMSK’" OUTPUT Mta;&q

4-11Programming CommandsIntroductionExample OUTPUT Mta;"PROG:STR ’Command’,’MEAS’" OUTPUT Mta;"PROG:WAIT?" ENTER Mta;A$ OUTPUT Mt

Programming CommandsIntroductionExample OUTPUT Mta;"PROG:STR ’Param’,’COLGRAD’" OUTPUT Mta;"PROG:STR ’Command’,’PERSIST’" OUTPUT

5Specifications and Characteristics

Specifications and CharacteristicsSpecifications and CharacteristicsSpecifications and CharacteristicsThis chapter contains specifications and charact

5-3Specifications and CharacteristicsVertical SpecificationsVertical Specifications Table 5-1. Vertical SpecificationsBandwidth (–3 dB): 20 GHz (exten

Specifications and CharacteristicsInput Channel SpecificationsInput Channel Specifications CAUTION Input channels RF INPUT 1 and RF INPUT 2 are dc cou

5-5Specifications and CharacteristicsTrigger SpecificationsTrigger Specifications Table 5-3. Trigger SpecificationsOperation input range: (including d

Specifications and CharacteristicsTrigger SpecificationsTrigger SpecificationsTable 5-4. Trigger SpecificationsTrigger sensitivity (dc - 40 GHz):65 mV

5-7Specifications and CharacteristicsHorizontal SpecificationsHorizontal SpecificationsThese specifications are for the eye diagram analyzer only.Tabl

1-11Getting StartedSteps for Setting Up Eye-Diagram AnalysisThese softkeys can also be used to specify an optical-to-electrical responsivity conversio

Specifications and CharacteristicsDeclaration of ConformityDeclaration of Conformity

Index-1IndexNumerics0 level description, 3-41 Level description, 3-410 MHz reference, 1-1170820A calibration, 3-6170820A clock control, 3-2170820A con

Index-2Indexcreate print, 3-47crossing level description, 3-5custom keypad, 1-3custom mask or limit line testing, 2-23custom prefix, 3-45Ddata pattern

Index-3Indexeye-diagram analyzer reference, 3-2eye-diagram analyzer, calibrating, 3-23eye-diagram menus, 3-12eyelinesoftware filters, 1-9eyeline mode,

Index-4Indexmarkers turned on, 2-13markers, menus, 3-13MARMSK command, 4-9mask align, 3-32mask and limit lines, 1-8mask margins, 3-32mask or limit lin

Index-5Indexprinting, 3-47PROGSTR? to read response, 4-3program failed to load, 1-17program variables, values, 4-5programming commands, 4-2programming

Index-6Indextrigger level, manually set, 1-25trigger source, 1-22trigger, menus, 3-12turn calibrator signal on, 3-70turning off RF correction, 3-62tut

Getting StartedSteps for Setting Up Eye-Diagram AnalysisStep 1. Connect the Equipment 70841A/B Pattern Generator and 70311A Signal Generator Modules1

1-13Getting StartedSteps for Setting Up Eye-Diagram Analysis2 If you are using 70841A/B pattern generator and 70311A signal generator modules with y

ii© Copyright Agilent Technologies 2002All Rights Reserved. Repro-duction, adaptation, or trans-lation without prior written permission is prohibited,

Getting StartedSteps for Setting Up Eye-Diagram Analysis4 If the attenuator connected to the 70820A’s RF INPUT 2 connector is not 6 dB, press: Trg,Ca

1-15Getting StartedSteps for Setting Up Eye-Diagram AnalysisLaser and Optical-to-Electrical ConverterIf you have access to a laser and an optical-to-e

Getting StartedSteps for Setting Up Eye-Diagram AnalysisConnections without a Laser Source and Converter If a laser source and optical-to-electrical c

1-17Getting StartedSteps for Setting Up Eye-Diagram AnalysisIf the Program Failed to Load The program has failed to load if one of the following occur

Getting StartedSteps for Setting Up Eye-Diagram Analysis 3 If the screen does not resemble the above figure, press: msi:, HP-MSIB CARD, prev menu DISP

1-19Getting StartedSteps for Setting Up Eye-Diagram AnalysisStep 3. Complete the Installation Using the Screen Instructions • If the displayed screen

Getting StartedSteps for Setting Up Eye-Diagram AnalysisFirst Self-Guided Screen3 Use the following self-guided screen to indicate the 10 MHz frequenc

1-21Getting StartedSteps for Setting Up Eye-Diagram Analysis4 The following screen should be displayed. Notice that the eye-diagram analyzer’s left-si

Getting StartedSteps for Setting Up Eye-Diagram Analysisthe instruments’ front panels, follow the instructions shown. Otherwise, proceed with “If you

1-23Getting StartedSteps for Setting Up Eye-Diagram AnalysisNote Using the CLOCK OUT trigger signal provides faster data acquisition for eye-diagrams.

iiiGeneral Safety ConsiderationsGeneral Safety ConsiderationsThis product has been designed and tested in accordance with the standards listed on the

Getting StartedSteps for Setting Up Eye-Diagram AnalysisControlling an 70841A/B Pattern Generator When using the 70311A clock source (below 3 Gb/s):

1-25Getting StartedSteps for Setting Up Eye-Diagram Analysis70841A/B appears. c Press ADJUST ROW, and rotate the knob to move the box to the row where

Getting StartedSteps for Setting Up Eye-Diagram Analysis3 Turn the display off and select trace one by pressing: Traces, display ON|OFF OFF, select:,

1-27Getting StartedSteps for Setting Up Eye-Diagram Analysis3 The eye-diagram is now ready for use. To restore the factory instrument preset Restore

Getting StartedSteps for Setting Up Eye-Diagram Analysis

2Application Tutorials

Application TutorialsApplication TutorialsApplication TutorialsThis chapter contains nine tutorials that introduce important eye-diagram analyzer feat

2-3Application TutorialsApplication TutorialsClock Freq: 2.48832 GHz Clock Ampl: 500 mV Clock Hi-Lvl: 0 V If you’re performing these tutorials without

Application TutorialsTutorial 1: Measure Eye-ParametersTutorial 1: Measure Eye-Parameters The eye-diagram analyzer performs automatic eye measuremen

2-5Application TutorialsTutorial 1: Measure Eye-Parameters Example of a Large Overshoot Resulting from Laser Bias Perform an Offset CalibrationThis ca

ivGeneral Safety ConsiderationsCAUTION Fiber-optic connectors are easily damaged when connected to dirty or damaged cables and accessories. The Agilen

Application TutorialsTutorial 1: Measure Eye-ParametersEnabling this function approximately doubles the measurement time. 8 Perform the eye measuremen

2-7Application TutorialsTutorial 1: Measure Eye-Parameters Example Extinction Ratio Measurement 10 Change the amount of data used for the histograms b

Application TutorialsTutorial 2: Measure in Optical Power UnitsTutorial 2: Measure in Optical Power Units The analyzer display has the ability to

2-9Application TutorialsTutorial 2: Measure in Optical Power Units

Application TutorialsTutorial 3: Measure Extinction Ratios on Low-Level SignalsTutorial 3: Measure Extinction Ratios on Low-Level Signals Repeatable

2-11Application TutorialsTutorial 3: Measure Extinction Ratios on Low-Level Signals Autoscaled Display of Low-Level Signal 4 Turn filtering on by pres

Application TutorialsTutorial 3: Measure Extinction Ratios on Low-Level SignalsMeasure the Extinction Ratio 8 To measure the extinction ratio, press:

2-13Application TutorialsTutorial 4: Measure Laser Turn-on DelayTutorial 4: Measure Laser Turn-on Delay On-screen markers can be used to measure both

Application TutorialsTutorial 4: Measure Laser Turn-on Delay Laser Overshoot and Turn-On Delay

2-15Application TutorialsTutorial 5: Use Software FiltersTutorial 5: Use Software Filters This tutorial enables a software filter. The filter is desig

Contents-1Contents1 Getting StartedSteps for Setting Up Eye-Diagram Analysis 1-42 Application TutorialsTutorial 1: Measure Eye-Parameters 2-4Tutorial

Application TutorialsTutorial 5: Use Software Filters User-Corrections Applied to the Data Change to Eyeline Mode 1 Set the analyzer to a known state

2-17Application TutorialsTutorial 5: Use Software Filters Eyeline Display Showing Laser Overshoot Load the Software Filter 2 Place the 70874A memory

Application TutorialsTutorial 5: Use Software Filters7 Turn the autoscale function on by pressing: Traces, AUTO-SCALE The display should look like the

2-19Application TutorialsTutorial 6: Test to Industry StandardsTutorial 6: Test to Industry Standards Masks allow you to test eye-diagrams against i

Application TutorialsTutorial 6: Test to Industry Standards Turn Mask Testing On 6 Turn mask testing on by pressing: Masks, test ON OFF ON This resets

2-21Application TutorialsTutorial 6: Test to Industry Standards Stop on and Display Trace Errors The eye-diagram analyzer has the ability to stop da

Application TutorialsTutorial 6: Test to Industry Standardstest ON OFF ON The instrument stops sweeping after two error traces have been accumulated.

2-23Application TutorialsTutorial 7: Default and Custom Mask or Limit Line TestingTutorial 7: Default and Custom Mask or Limit Line Testing The 70820A

Application TutorialsTutorial 7: Default and Custom Mask or Limit Line TestingCreate a Mask or Limit Line1 Set the analyzer to a known state by pressi

2-25Application TutorialsTutorial 7: Default and Custom Mask or Limit Line TestingStretch, Reduce, or Move the Mask11 To stretch, reduce or move the m

Contents-2Contents5 Specifications and CharacteristicsVertical Specifications 5-3Input Channel Specifications 5-4Trigger Specifications 5-5Trigger Spe

Application TutorialsTutorial 7: Default and Custom Mask or Limit Line TestingDisplay the Error Trace 23 Display a mask and begin testing as described

2-27Application TutorialsTutorial 8: Display the Data PatternTutorial 8: Display the Data Pattern The eye-diagram analyzer can display the data patt

Application TutorialsTutorial 8: Display the Data Pattern Example Pattern Mode DisplayAdd Time Delay 6 Add time delay by pressing: Setup, DELAY Each p

2-29Application TutorialsTutorial 8: Display the Data Pattern8 Set channel 2 by pressing: CH2 is:, CLK OUT Notice that the diagram softkey annotation

Application TutorialsTutorial 9: Constructing a Low-Pass Filter from a Transfer FunctionTutorial 9: Constructing a Low-Pass Filter from a Transfer Fun

2-31Application TutorialsTutorial 9: Constructing a Low-Pass Filter from a Transfer Function3 Turn the display off by pressing: Traces, select:, TR1,

Application TutorialsTutorial 9: Constructing a Low-Pass Filter from a Transfer Function6 Build the trace equation shown in the following figure by pr

2-33Application TutorialsTutorial 9: Constructing a Low-Pass Filter from a Transfer Function10 Set the marker on 1.86224 GHz using the knob or numeric

Application TutorialsTutorial 9: Constructing a Low-Pass Filter from a Transfer Function14 Highlight "UCORR1" using the knob. 15 Continue by

2-35Application TutorialsTutorial 9: Constructing a Low-Pass Filter from a Transfer Function16 To store the filter to a memory card, press: States, mo

1Getting Started

Application TutorialsTutorial 10: Create a Vertical HistogramTutorial 10: Create a Vertical Histogram This tutorial creates a vertical histogram on da

2-37Application TutorialsTutorial 10: Create a Vertical Histogram6 Enter the number of samples to be taken for the histogram by pressing: prev menu, N

Application TutorialsTutorial 10: Create a Vertical HistogramPerform Statistical Analysis The range of sample points used to calculate the mean and st

2-39Application TutorialsTutorial 10: Create a Vertical Histogram10 To display a line indicating the location of the mean, press: results, MEAN, The m

Application TutorialsTutorial 10: Create a Vertical Histogram11 To display a line indicating the location of the standard deviation, press: STD DEV

2-41Application TutorialsTutorial 11: Create a Horizontal HistogramTutorial 11: Create a Horizontal HistogramThis tutorial creates a horizontal histog

Application TutorialsTutorial 11: Create a Horizontal Histogram6 Enter the number of samples to be taken for the histogram by pressing: prev menu, NUM

2-43Application TutorialsTutorial 11: Create a Horizontal HistogramPerform Statistical Analysis The range of sample points used to calculate the mean

Application TutorialsTutorial 11: Create a Horizontal Histogram10 To display a line indicating the location of the mean, press: results, MEAN The mean

2-45Application TutorialsTutorial 11: Create a Horizontal Histogram11 To display a line indicating the location of the standard deviation, press: STD

Getting StartedGetting Started with the Eye-Diagram AnalyzerGetting Started with the Eye-Diagram AnalyzerIn this chapter, you will find information on

Application TutorialsTutorial 11: Create a Horizontal Histogram

3Eye-Diagram Analyzer Reference

Eye-Diagram Analyzer ReferenceEye-Diagram Analyzer ReferenceEye-Diagram Analyzer ReferenceIn this chapter, you will find information on the following

3-3Eye-Diagram Analyzer ReferencePerforming Eye-Diagram MeasurementsPerforming Eye-Diagram Measurements To perform the automatic eye-diagram measureme

Eye-Diagram Analyzer ReferencePerforming Eye-Diagram MeasurementsUse the NUMBER SAMPLES softkey for this purpose. • Use the MEASURE EYE to initia

3-5Eye-Diagram Analyzer ReferencePerforming Eye-Diagram MeasurementsCrossing Level This measurement is the amplitude that the one level and zero level

Eye-Diagram Analyzer ReferencePerforming Eye-Diagram MeasurementsFor Optimum Performance The 70820A module should be configured to: • Control the RF s

3-7Eye-Diagram Analyzer ReferenceGenerating HistogramsGenerating HistogramsThe 70820A can perform statistical analysis on any displayed trace. After c

Eye-Diagram Analyzer ReferenceGenerating HistogramsWhen generating histograms, you must perform the following basic steps: 1 Select a trace. 2 Select

3-9Eye-Diagram Analyzer ReferenceMasks and Limit LinesMasks and Limit LinesMasks and limit lines allow you to test the shape (time or frequency versus

1-3Getting StartedGetting Started with the Eye-Diagram AnalyzerThe custom keypad The eye-diagram analyzer comes with a

Eye-Diagram Analyzer ReferenceMasks and Limit Lines A Limit Line Displayed on ScreenBecause you can perform repetitive testing of response shapes, mas

3-11Eye-Diagram Analyzer ReferenceMasks and Limit LinesTesting Responses Once you’ve created a mask or limit line, set the following conditions for te

Eye-Diagram Analyzer ReferenceEye-Diagram Menu MapsEye-Diagram Menu Maps The two menu maps in this section graphically represent the eye-diagram ana

3-13Eye-Diagram Analyzer ReferenceEye-Diagram Menu MapsTraces, Measure, Markers, Masks, and Mass Storage Menus

Eye-Diagram Analyzer ReferenceAgilent 70820A MenusAgilent 70820A MenusThis section discusses the softkey menus for the 70820A microwave transition ana

3-15Eye-Diagram Analyzer ReferenceAgilent 70820A MenusThe Left-Side Softkeys Use the softkeys located on the left side of the display to access the tw

Eye-Diagram Analyzer ReferenceControlling the DisplayControlling the Display To Control the Number of Bits Displayed The Setup menu’s BIT INTVL softke

3-17Eye-Diagram Analyzer ReferenceControlling the DisplayTo Improve the Sensitivity in Eyeline Mode In eyeline mode, additional eye filtering

Eye-Diagram Analyzer ReferenceControlling the DisplayTo learn more about these files and about creating and applying user-correc-tions, refer to “Tuto

3-19Eye-Diagram Analyzer ReferenceControlling the Display 4 Load the file by pressing: LOAD FILE The file is loaded when user-corrections loaded is di