Tektronix TDS8000B - Manuals

Table of Contents CSA8000B & TDS8000B User Manual v Using Waveform Databases 3-- 159 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Why Use? 3-- 159 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . What’s Special...

Table of Contents vi CSA8000B & TDS8000B User Manual List of Figures Figure 1--1: Compartments for sampling modules 1--11 . . . . . . . . . . . . . . . Figure 1--2: Maximum inputs in three configurations 1--11 . . . . . . . . . . . . Figure 1--3: Locations of peripheral connectors on rear panel ...

Table of Contents viii CSA8000B & TDS8000B User Manual List of Tables Table 1--1: Additional accessory connection information 1--13 . . . . . . . . . Table 1--2: Line fuses 1--13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 1--3: Standard accessories 1--41 . ...

CSA8000B & TDS8000B User Manual ix General Safety Summary Review the following safety precautions to avoid injury and prevent damage tothis product or any products connected to it. To avoid potential hazards, use thisproduct only as specified. Only qualified personnel should perform service proc...

General Safety Summary x CSA8000B & TDS8000B User Manual Provide Proper Ventilation. Refer to the manual’s installation instructions for details on installing the product so it has proper ventilation. Terms in this Manual. These terms may appear in this manual: WARNING. Warning statements identi...

CSA8000B & TDS8000B User Manual xi Preface This is the user manual for the CSA8000B Communications Signal Analyzer andTDS8000B Digital Sampling Oscilloscope. It covers the following information: H Describes the capabilities of the instrument: how to install it and reinstall itssoftware H Explain...

Preface xii CSA8000B & TDS8000B User Manual Related Manuals and Online Documents This manual is part of a document set of standard-accessory manuals and onlinedocumentation; this manual mainly focuses on installation and backgroundneeded to use the product features. See the following list for ot...

Preface CSA8000B & TDS8000B User Manual xiii Contacting Tektronix Phone 1-800-833-9200 * Address Tektronix, Inc.Department or name (if known)14200 SW Karl Braun DriveP.O. Box 500Beaverton, OR 97077USA Web site www.tektronix.com Sales support 1-800-833-9200, select option 1 * Service support 1-80...

CSA8000B & TDS8000B User Manual 1- 1 Product Description This chapter describes your instrument, which is either the CSA8000B Commu-nications Signal Analyzer or the TDS8000B Digital Sampling Oscilloscope, andits options. Following this description are four sections: H Check the Package Contents ...

Product Description CSA8000B & TDS8000B User Manual 1- 3 FibreChannel signals, and 1, 2, and 10 Gigabit FibreChannel signals as wellas 2.5 Gb/s Infiniband signals. NOTE . Support for conformance testing rates is determined by the specific modules that are installed. H high precision time base wi...

Product Description 1- 4 CSA8000B & TDS8000B User Manual product software becomes necessary. See Software Installation on page 1--15. New versions of the software may become available at our web site. See Contacting Tektronix on page xiii in Preface. Firmware Upgrade Tektronix may offer firmware...

Product Description CSA8000B & TDS8000B User Manual 1- 5 H 80C07 -- 155/622/2488 Mb/s amplified optical module.Clock Recovery for all rates added with option CR1. This module has been superseded by the 80C07B. H 80C07B -- 155/622/1063/1250/2125/2488/2500 Mb/s amplified opticalmodule. (The module...

CSA8000B & TDS8000B User Manual 1- 7 Check the Package Contents Verify that you have received all of the parts of your instrument. You shouldverify that you have: H the main instrument. H all the standard accessories for the main instrument. Standard accessories arelisted in Table 1--3 on page 1...

CSA8000B & TDS8000B User Manual 1- 9 Installation This section covers installation of the instrument, addressing the followingtopics: H Check the Environment Requirements on page 1--9 H Install the Sampling Modules on page 1--10 H Connect the Peripherals on page 1--12 H Power On the Instrument o...

Installation 1- 10 CSA8000B & TDS8000B User Manual Specifications in Appendix A list the operating requirements for the instrument. Power source and temperature, humidity, and altitude are listed. If this instrument is rackmounted, see the TDS8000 & CSA8000 Rackmount Instructions for additio...

Installation CSA8000B & TDS8000B User Manual 1- 11 Large-module compartments (2) Small-module compartments (4) Connect ESD wrist strap here Figure 1- 1: Compartments for sampling modules You can install up to two large sampling modules and four small modules for atotal of 10 inputs. Of these 10 ...

Installation 1- 12 CSA8000B & TDS8000B User Manual Connect the Peripherals The peripheral connections are mostly the same as those you would make on apersonal computer. The connection points are shown in Figure 1--3. SeeTable 1--1 on page 1--13 for additional connection information. WARNING. Bef...

Installation CSA8000B & TDS8000B User Manual 1- 13 Table 1- 1: Additional accessory connection information Item Description Monitor If you use a non-standard monitor, you may need to change thethe Windows display settings to achieve the proper resolutionfor your monitor. Printer Connect the prin...

Installation 1- 14 CSA8000B & TDS8000B User Manual CAUTION. Connect the keyboard, mouse, and other accessories before applying power to the product. Connecting the accessories after powering on theinstrument can damage the accessories. Two exceptions are the USB keyboardand mouse that ships with...

Installation CSA8000B & TDS8000B User Manual 1- 15 Powering Off the Instrument The instrument has a built-in soft power-down function that safely powers downthe instrument when you push the On/Standby button. You do not need to closethe UI application or Windows before using the On/Standby butto...

CSA8000B & TDS8000B User Manual 1- 17 Incoming Inspection This section contains instructions for performing an incoming inspection of thisinstrument. Performance of an incoming inspection is not required to put theinstrument in service. These instructions verify that the instrument is operating ...

Incoming Inspection 1- 18 CSA8000B & TDS8000B User Manual H One SMA 10X attenuator, such as Tektronix part number 015-1003-00. H One or more (quantity to match number of electrical channels to compen-sate) 50 Ω terminators, such as Tektronix part number 015-1022-01 H One 50 Ω terminator cap, suc...

Incoming Inspection 1- 20 CSA8000B & TDS8000B User Manual Perform the Compensation This procedure uses internal routines to verify that the instrument compensatesproperly. Equipment required For sampling modules: H 50 Ω terminations on all electrical module channels (Tektronix part number 015-10...

Incoming Inspection CSA8000B & TDS8000B User Manual 1- 21 b. Wait until the Status for all items you wish to compensate changes from Warm Up to Pass , Fail , or Comp Req’d . c. Under Select Action, click the Compensate option button. d. From the top pulldown list, choose All (default selection) ...

Incoming Inspection 1- 22 CSA8000B & TDS8000B User Manual STOP . These procedures verify functions; that is, they verify that the instrument features operate. They do not verify that they operate within limits; therefore, donot interpret any quantities cited (such as “about five horizontal divis...

Incoming Inspection CSA8000B & TDS8000B User Manual 1- 25 c. Set the Vertical Scale, Vertical Offset, and DC Calibration Output to thelevels shown in the first row of the table that follows. d. In Measurement readout on screen, verify that the Mean measurementfor the channel under test falls wit...

Incoming Inspection 1- 26 CSA8000B & TDS8000B User Manual 3. Select the channel to test: Push the channel button for the channel you want to test. The button lights amber and the channel displays. See Figure 1--9. Channel buttons Figure 1- 9: Channel button location 4. Verify that the channel is...

Incoming Inspection CSA8000B & TDS8000B User Manual 1- 27 NOTE . If the position knob was set to 0.000, you can confirm this in the Vertical menu (use Basic button in the dialog box). Control bar Vertical offset setting Baseline Vertical offset Figure 1- 10: Optical channel verification 5. Verif...

Incoming Inspection 1- 28 CSA8000B & TDS8000B User Manual 7. Test all channels: Repeat steps 3 through 5 until all optical input channels are verified. After verifying the channels, you can now verify that the time bases function.This verification is done using a front-panel signal. Equipmentreq...

Incoming Inspection CSA8000B & TDS8000B User Manual 1- 29 d. Push the channel button for the channel you connected to in step 2. SeeFigure 1--12 on page 1--29. The button lights and the channel displaycomes on. e. Turn the Vertical SCALE knob to set the vertical scale to 20 mV/div . The channel ...

Incoming Inspection 1- 32 CSA8000B & TDS8000B User Manual 8. Verify that the Mag2 time base operates: a. Push the Mag1 button to remove the display of the Mag1 time base. b. Perform steps 6 and 7, but use the Mag2 button instead of the Mag1. This test verifies that the Gated Trigger (GT Option) ...

Incoming Inspection 1- 38 CSA8000B & TDS8000B User Manual Perform the Hardware and Operating System Tests (Windows 98 Only) NOTE . The procedures in this section only apply to instruments using the MS Windows 98 operating system. Instruments using the MS Windows 2000operating system do not inclu...

Incoming Inspection CSA8000B & TDS8000B User Manual 1- 39 Power on the instrument and visually inspect the left side panel of the instrumentto verify that all six cooling fans are rotating. Equipmentrequired None Prerequisites The instrument must be powered on and running. To perform a minimal c...

CSA8000B & TDS8000B User Manual 1- 41 Accessories and Options This section lists the standard and optional accessories, as well as the productoptions available for the instrument at the time this manual was published. Accessories Table 1--3 lists the standard accessories that ship with the instr...

Accessories and Options 1- 42 CSA8000B & TDS8000B User Manual The following accessories are orderable for use with the instrument at the timethis manual was originally published. Consult a current Tektronix catalog foradditions, changes, and details. Table 1- 4: Optional accessories Item Part nu...

Accessories and Options CSA8000B & TDS8000B User Manual 1- 43 Options The following options can be ordered for the instrument: H Option 1K: Cart H Option 1R: Rack Mount Kit (includes hardware and instructions forconverting to rackmount configuration) H Option GT: Gated Trigger option. H Internat...

CSA8000B & TDS8000B User Manual 2- 1 Operational Maps This chapter acquaints you with how the instrument functions and operates. Itconsists of several maps that describe the system, its operation, and its documen-tation: H Documentation Map, on page 2--2, lists the documentation that supports th...

2- 4 CSA8000B & TDS8000B User Manual System Overview Maps The instrument and its sampling modules comprise a highly capable waveformacquisition, test, and measurement system. The following model providesbackground information on its operation, which, in turn, may provide you insighton how the in...

System Overview Maps 2- 6 CSA8000B & TDS8000B User Manual Process Overview Map Process overview Process block description Idling... ResetAbortPower On 1 Yes 1. The instrument starts in the idle state; it enters this stateupon power up, upon receiving most control setting changes,or upon finishin...

CSA8000B & TDS8000B User Manual 2- 7 User Interface Map -- Complete Control and Display Menu Bar: Access to data I/O, printing, online help system, and set-up functions Tool Bar: Handy access to key features, including the setup dialogs, acquisition modes, triggering modes, and online help Measu...

2- 8 CSA8000B & TDS8000B User Manual Front Panel Map -- Quick Access to Most Often Used Features Press to display and select a waveform not yet displayed; press to select among displayed waveforms; press again to turn a selected waveform off. Button lights indicate displayed and selected wavefor...

CSA8000B & TDS8000B User Manual 3- 1 Overview This chapter describes how the many features of the instrument operate. Pleasenote the following points on using this chapter: H Each section in this chapter provides background information needed tooperate the instrument effectively as well as the h...

CSA8000B & TDS8000B User Manual 3- 3 Acquiring Waveforms Before you can display, measure, or analyze a waveform, you must acquire itfrom a signal. This instrument comes equipped with the features you need forcapturing your waveforms. The following topics provide an overview of captur-ing signals...

Acquiring Waveforms 3- 4 CSA8000B & TDS8000B User Manual Signal Connection and Scaling This section presents an overview of the instrument features related to setting upthe input signal for digitizing and acquisition. It addresses the following topics: H Where to find information for installing ...

Acquiring Waveforms CSA8000B & TDS8000B User Manual 3- 5 H Set horizontal scale to control the time duration of the horizontal acquisitionwindow to capture as much as you want of the input signal(s). To controlwhere in the input signal (data stream) that the horizontal acquisitionwindow acquires...

Acquiring Waveforms CSA8000B & TDS8000B User Manual 3- 7 Clipped H Set horizontal scale, position, and resolution (record length) so that theacquired waveform record includes the signal attributes of interest with goodsampling density on the waveform. The settings you make define thehorizontal a...

Acquiring Waveforms 3- 8 CSA8000B & TDS8000B User Manual Flexible Control Access. The product provides multiple methods for adjusting acquisition controls. This manual focuses on basic setup through the front panel,and the use of the User Interface (UI) Application displayed full screen. See the...

Acquiring Waveforms 3- 10 CSA8000B & TDS8000B User Manual Overview Related control elements and resources To set the signal input (cont.) Set the horizontal acquisition window 5. Push the View Main button to make sure the main time base view is selected. Use horizontal knobs to scale andposition...

Acquiring Waveforms CSA8000B & TDS8000B User Manual 3- 11 With an input signal connected, use the procedure that follows to autoset basedon the characteristics of the input signal. Autoset operates on the selectedchannel only. Overview To autoset Control elements and resources Prerequisites 1. T...

Acquiring Waveforms CSA8000B & TDS8000B User Manual 3- 13 NOTE . Autoset sets the vertical position to zero and adjusts the vertical offset to center the signal in the display. If a standard mask is active for the selected waveform, Autoset adjusts theselected waveform record to match the mask, ...

Acquiring Waveforms CSA8000B & TDS8000B User Manual 3- 15 The vertical scale and position controls do not affect the vertical acquisitionwindow, rather they adjust the display system to display the waveform asfollows: H The vertical scale (per division) setting determines the portion of the vert...

Acquiring Waveforms CSA8000B & TDS8000B User Manual 3- 21 Setting Acquisition Controls This section overviews the instrument acquisition features—those that start andstop acquisitions and those that control how the instrument processes the data asit is acquired (just sampled, or averaged or enve...

Acquiring Waveforms 3- 22 CSA8000B & TDS8000B User Manual Envelope acquisition mode can not be used with FrameScan acquisitions; youmust use Sample or Average modes. The key points that follow describe operating considerations for setting up theacquisition system so the waveforms acquired best f...

Acquiring Waveforms CSA8000B & TDS8000B User Manual 3- 23 Global Controls. Like the horizontal controls, the acquisition controls apply to all active channels. For example, channel 1 cannot acquire in Sample mode whilechannel 2 acquires in Envelope mode; you cannot stop channel 8 from acquiring(...

Acquiring Waveforms 3- 24 CSA8000B & TDS8000B User Manual Use the procedure that follows to set the data-acquisition mode and specifyacquisition start and stop methods. For more detailed information, display onlinehelp when performing the procedure. Overview To set acquisitions modes Control ele...

Acquiring Waveforms 3- 26 CSA8000B & TDS8000B User Manual Use the procedure that follows to start and stop acquisition. Overview To start and stop acquisition Control elements and resources Prerequisites 1. Instrument must be installed with sampling modules inplace before powering on the instrum...

Acquiring Waveforms CSA8000B & TDS8000B User Manual 3- 27 Acquisition Control Background This section contains background information on the data sampling andacquisition process that can help you more effectively setup the acquisitionwindow of each channel. This section: H describes the acquisit...

Acquiring Waveforms 3- 28 CSA8000B & TDS8000B User Manual repeated trigger events, also provides the digitized signal data from which theinstrument assembles the waveform record (see Figure 3--9 on page 3--29). Thesignal parts within the vertical range of the sampler are digitized. SeeFigure 3--...

Acquiring Waveforms CSA8000B & TDS8000B User Manual 3- 29 Sample interval First sampled and digitized point Horizontal delay Recurring trigger events from trigger signal Waveform record acquired over many acquisitions, 1 sample per acquisition Record length Figure 3- 9: The waveform record and i...

Acquiring Waveforms 3- 30 CSA8000B & TDS8000B User Manual FrameScan Acquisitions This instrument can modify its normal acquisition process to help you analyzepattern-dependent failures in high bit-rate communications signals. FrameScan acquisitions allow detailed display and analysis of individu...

Acquiring Waveforms CSA8000B & TDS8000B User Manual 3- 33 Use the procedure that follows to set up the instrument to acquire in FrameScanmode. Overview To acquire in FrameScan mode Control elements and resources Prerequisites 1. The instrument must have an appropriate samplingmodule in place bef...

Acquiring Waveforms 3- 36 CSA8000B & TDS8000B User Manual FrameScan Acquisition, when coupled with mask testing, provides the tool youneed to capture a defective bit and examine the pattern leading up to it. Overview To catch a bit error Control elements and resources Prerequisites 1. The instru...

CSA8000B & TDS8000B User Manual 3- 39 Triggering To properly acquire waveforms — to sample a signal and assemble it into awaveform record — you need to set up the instrument trigger conditions. Thissection provides an overview of the instrument trigger features and their use. Acquisition system ...

Triggering CSA8000B & TDS8000B User Manual 3- 43 Use a trigger source that is synchronized with the signal you are sampling anddisplaying. Selection of your trigger source depends on your application, asshown in Table 3--1. Table 3- 1: Application-based triggering Application Source to use Commu...

Triggering 3- 48 CSA8000B & TDS8000B User Manual Use the procedure that follows when setting up the instrument to triggeracquisitions. Overview To trigger Control elements and resources Prerequisites 1. The instrument must be installed with sampling modulesin place. Acquisition system should be ...

Triggering 3- 50 CSA8000B & TDS8000B User Manual Use the procedure that follows when setting up the instrument to use the gatedtrigger. Gated trigger is only available with Option GT installed. Overview To use gated trigger Control elements and resources Prerequisites 1. The Acquisition system s...

CSA8000B & TDS8000B User Manual 3- 53 Displaying Waveforms To make use of the waveforms you acquire, you will often want to display them.This instrument includes a flexible, customizable display that you can control toexamine and analyze acquired waveforms. This section presents an overview ofdi...

Displaying Waveforms 3- 56 CSA8000B & TDS8000B User Manual The key points that follow describe operating considerations for setting up theinstrument time base views so that they best support your data-analysis tasks. Waveform Display. In general, the method of displaying a waveform is to define ...

Displaying Waveforms CSA8000B & TDS8000B User Manual 3- 57 Table 3- 3: Operations performed based on the selected waveform Control function Waveform supports? Ch Ref Math Operating notes Vertical Scale Yes Yes Yes If more than one time base is displayed, these controls adjust the selected channe...

Displaying Waveforms 3- 62 CSA8000B & TDS8000B User Manual Use the procedure that follows to become familiar with the display adjustmentsyou can make. Overview To control the Main view Related control elements and resources Prerequisites 1. The instrument must be installed with sampling modulesi...

Displaying Waveforms 3- 64 CSA8000B & TDS8000B User Manual Overview Related control elements and resources To control the Main view (cont.) Explore the Mag time base controls 10. The next procedure describes how to set up andcontrol the Mag time bases. See To Display Waveforms in a Mag View on p...

Displaying Waveforms 3- 66 CSA8000B & TDS8000B User Manual Customizing the Display Use the display customizing features this instrument provides to present thedisplay elements—color, graticule style, waveform representation, and soon—according to your preferences. Color grading. You can select c...

Displaying Waveforms 3- 68 CSA8000B & TDS8000B User Manual Use the procedure that follows to become familiar with the display styles youcan set. Overview To set display styles Related control elements and resources Prerequisites 1. The instrument must be powered up, with any waveformyou want to ...

Displaying Waveforms CSA8000B & TDS8000B User Manual 3- 69 Overview Related control elements and resources To set display styles (cont.) Select a persistence Mode 6. From the the Setup Display dialog box (see right),choose: H Infinite Persistence to make data persist until you change some contro...

CSA8000B & TDS8000B User Manual 3- 73 Measuring Waveforms To assist you in analyzing the waveforms you acquire, the instrument comesequipped with cursors and automatic measurements. This section describes thesetools and how you use them: H Taking Automatic Measurements, on page 3--74, describes ...

Measuring Waveforms 3- 74 CSA8000B & TDS8000B User Manual Taking Automatic Measurements This powerful and flexible tool provides automatic extraction of variousparameters from the waveforms that this instrument acquires. Automatedmeasurements quickly give you immediate, continuously updating, me...

Measuring Waveforms CSA8000B & TDS8000B User Manual 3- 75 Annotations indicate the waveform region determining measurement Figure 3- 19: Measurement annotations on a waveform Use Databases as Sources. If you define the source you want to measure as a database in the Meas Setup dialog box, you ca...

Measuring Waveforms CSA8000B & TDS8000B User Manual 3- 77 waveform database. You can measure the waveform instead of its database ifyou turn off Use Wfm Database in the Meas setup dialog box. H If you assign a database to a waveform already being used as a source for anautomatic measurement, it ...

Measuring Waveforms 3- 78 CSA8000B & TDS8000B User Manual High (mode) Low (mode) Low (min/max) High (min/max) High (mean) Low (mean) Mid reference Figure 3- 20: High/Low tracking methods H Mean (of Histogram) sets the values statistically. Using a histogram, it selects the mean or average value ...

Measuring Waveforms CSA8000B & TDS8000B User Manual 3- 79 Reference Levels Method. You can choose the method that the instrument uses to determine a second group of levels when taking time-related measurements.These levels are the High, Mid, and Low references. For example, the measure-ment syst...

Measuring Waveforms 3- 80 CSA8000B & TDS8000B User Manual The AOP method is the Average Optical Power reference level. This referencelevel selection is best used when taking the Optical Modulation Amplitude(OMA) measurement on a pulse waveform. (The AOP setting is ignored forNRZ waveforms.) This...

Measuring Waveforms CSA8000B & TDS8000B User Manual 3- 83 Use the procedure that follows to set gates on a measurement source, whichforces the measurement to be taken over a segment of the waveform (otherwise,the entire waveform feeds the measurement). Overview To gate a measurement Related cont...

Measuring Waveforms CSA8000B & TDS8000B User Manual 3- 85 Taking Cursor Measurements Use cursors to measure amplitude and time quickly and with more accuracy thanwhen using graticule measurements. Because you position cursors wherever youwant on the waveform, they are easier to localize to a wav...

Measuring Waveforms 3- 86 CSA8000B & TDS8000B User Manual Cursors can measure channel, reference, and math waveforms, as well aswaveform databases. You may set the source of each cursor explicitly in theCursor Setup dialog box. The key points that follow describe operating considerations for set...

Measuring Waveforms 3- 88 CSA8000B & TDS8000B User Manual First sampled point Time to first point Trigger point of cursor source Horizontal divs x sec/div + Cursor Cursor readout (tn) = Horizontal Ref = 0% Figure 3- 23: Components determining Time cursor readout values Note that a vertical curso...

Measuring Waveforms CSA8000B & TDS8000B User Manual 3- 89 Use the procedure that follows to take cursor measurements on waveforms. Overview To take cursor measurements Related control elements and resources Prerequisites 1. At least one waveform must be selected on screen. Oryou can set cursor v...

Measuring Waveforms 3- 92 CSA8000B & TDS8000B User Manual Optimizing Measurement Accuracy The procedures given here will increase the accuracy of the measurements youtake. This instrument can compensate itself and the sampling modules installed,optimizing the internal signal path used to acquire...

Measuring Waveforms 3- 96 CSA8000B & TDS8000B User Manual When making differential, common-mode, or other measurements, you may needto null out the propagation delay contributed by the input cabling between two ormore channels. Use the following procedure to adjust the deskew betweenchannels. NO...

Measuring Waveforms 3- 98 CSA8000B & TDS8000B User Manual Performing a dark-level compensation maximizes the accuracy of the extinctionratio and other optical automatic measurements you take. Performing a UserWavelength Gain compensation optimizes an optical channel for your custominput signal. ...

CSA8000B & TDS8000B User Manual 3- 101 Creating Math Waveforms Once you have acquired waveforms or taken measurements on waveforms, theinstrument can mathematically combine them to create a waveform that supportsyour data-analysis task. For example, you can define a math waveform thatcombines wa...

Creating Math Waveforms CSA8000B & TDS8000B User Manual 3- 105 <Term> := <Waveform> | ( <Expression> ) <Scalar> := <Integer> | <Float> | <Meas-Result> <Waveform> := <ChannelWaveform> | <ReferenceWaveform> <ChannelWaveform> := C1 |...

Creating Math Waveforms CSA8000B & TDS8000B User Manual 3- 107 Overview Related control elements & resources To define a math waveform (cont.) Apply the expression 6. Once you have defined the math expression to yoursatisfaction, click the Apply button. Then click on the OK button to dismiss...

Creating Math Waveforms CSA8000B & TDS8000B User Manual 3- 109 The procedure that follows demonstrates some common operations you canperform on math waveforms: Overview To use math waveforms Related control elements & resources Prerequisites 1. The Math waveform must be defined and displayed...

CSA8000B & TDS8000B User Manual 3- 113 Data Input and Output This section describes the input and output capabilities of your instrument.Specifically, it covers: H Saving and Recalling Setups on page 3--113 H Saving and Recalling Waveforms on page 3--120 H Exporting Waveforms and Histograms on p...

Data Input and Output CSA8000B & TDS8000B User Manual 3- 115 Avoiding Setup and Waveform Mismatches. Saved setups may contain settings inappropriate for waveforms currently in your instrument. For example, youmight have saved a setup that displayed a fiber channel mask, such as FC531, fortesting...

Data Input and Output 3- 118 CSA8000B & TDS8000B User Manual Use the procedure that follows to recall a setup to the instrument. Remember thatrecalling a setup replaces the existing setup, which is lost. Overview To recall your setup Control elements & resources Prerequisites 1. The instrume...

Data Input and Output 3- 120 CSA8000B & TDS8000B User Manual Saving and Recalling Waveforms This instrument can save any number of waveforms, limited only by the spaceyou have to store them. By saving a waveform, you can recall it at a later time for comparison, evalua-tion, and documentation. T...

Data Input and Output CSA8000B & TDS8000B User Manual 3- 121 Use the procedure that follows to save a waveform or waveforms to theinstrument hard disk, a floppy disk, or third party storage device. Overview To save a waveform Control elements & resources Prerequisites 1. The instrument must ...

Data Input and Output 3- 124 CSA8000B & TDS8000B User Manual Use the procedure that follows to recall a waveform to a reference. You can onlyrecall waveforms into references. NOTE . Reference waveforms do not recall because they are already instrument resident. You can copy a reference waveform ...

Data Input and Output CSA8000B & TDS8000B User Manual 3- 127 You can clear individual references of data individually or all at once. If areference is listed as active and you are sure you do not want the data it contains,use the procedure that follows to clear it. You can clear any of the activ...

Data Input and Output 3- 128 CSA8000B & TDS8000B User Manual Exporting Waveforms and Histograms This instrument also supports export of a waveform or histogram to a file. Theinstrument exports the data as comma-separated ASCII text. By exporting a waveform or a histogram, you can use it with oth...

Data Input and Output CSA8000B & TDS8000B User Manual 3- 129 Figure 3- 25: Export dialog box Use the process just described for exporting a waveform on page 3--128, selectthe Histogram button in the Export dialog box (see Figure 3--25). Also skipselecting a source. The instrument supports a sing...

Data Input and Output 3- 132 CSA8000B & TDS8000B User Manual Printing Waveforms You can print the display screen, including any waveforms displayed. Beforedoing so, you must install and set up your printer. To print the display and its waveforms, do the following steps: Overview To print wavefor...

Data Input and Output 3- 134 CSA8000B & TDS8000B User Manual To conserve ink and improve print quality when printing images of waveformdisplays, you can use Ink-saver mode. Do the following steps: Overview To print using ink-saver mode Control elements & resources Prerequisites 1. Waveforms ...

Data Input and Output 3- 136 CSA8000B & TDS8000B User Manual You can also print the instrument screen and its waveforms to a file. Thisinstrument currently supports printing to BMP, JPEG, TIFF, PNG and Targaimage-file formats. NOTE . Screen images saved using the PNG (Portable Network Graphics) ...

Data Input and Output CSA8000B & TDS8000B User Manual 3- 137 If the display screen printouts have missing information such as blacked-outreadouts, your instrument may need to be set to a higher color setting. To do so,follow the steps below: Overview To set high color Control elements & reso...

Data Input and Output CSA8000B & TDS8000B User Manual 3- 139 NOTE . If you print the screen infrequently, you may want to return the colors setting to 256 colors except when printing. To return to 256 colors, repeat theprocedure above, but select 256 colors in step 4. Remote Communication Remote...

CSA8000B & TDS8000B User Manual 3- 141 Using Masks, Histograms, and Waveform Databases The instrument comes equipped with statistical tools to help you display, test,and evaluate waveforms. This section describes these tools and how you usethem: H Mask Testing Waveforms , on page 3--141, describ...

Using Masks, Histograms, and Waveform Databases CSA8000B & TDS8000B User Manual 3- 145 H Masks are saved with setups, so you can save sets of masks by definingthem, and then storing the instrument setup. Displayed masks are overwrit-ten when you recall a stored setup, select a standard mask, or ...

Using Masks, Histograms, and Waveform Databases CSA8000B & TDS8000B User Manual 3- 149 When you edit a mask in an existing communications standard, the mask typeswitches from the selected standard to type User, and uses the masks from theStandard as a basis for editing. Use the procedure that fo...

Using Masks, Histograms, and Waveform Databases CSA8000B & TDS8000B User Manual 3- 151 Mask-counting statistics are displayed in the mask readout at the right-side of thedisplay. Mask counting statistics are displayed as soon as you enable a mask, andstay visible even if the mask isn’t displayed...

Using Masks, Histograms, and Waveform Databases 3- 152 CSA8000B & TDS8000B User Manual Masks are created by connecting the points independently of the order they areentered. Points are connected by sorting the points in left-to-right order andgrouping them across a diagonal from the left-most po...

Using Masks, Histograms, and Waveform Databases 3- 154 CSA8000B & TDS8000B User Manual Taking Histograms The instrument can display histograms constructed of waveform data. You candisplay both vertical (voltage) and horizontal (time) histograms, but only one at atime. Histogram readout Histogram...

Using Masks, Histograms, and Waveform Databases 3- 156 CSA8000B & TDS8000B User Manual Use the procedure that follows to quickly take a measurement based on thedefault settings for histograms. Overview To take a histogram Related control elements & resources Prerequisites 1. The instrument m...

Using Masks, Histograms, and Waveform Databases 3- 158 CSA8000B & TDS8000B User Manual After you check Enable Histogram in the Histogram Setup dialog box, histogramstatistics appear on the right-hand side of the screen. The following table is a listof the available histogram statistics and a bri...

Using Masks, Histograms, and Waveform Databases CSA8000B & TDS8000B User Manual 3- 159 Using Waveform Databases A waveform database is a three-dimensional accumulation of a source waveformas it is repeatedly acquired. In addition to the standard vertical and horizontaldimensions, each waveform s...

Using Masks, Histograms, and Waveform Databases 3- 162 CSA8000B & TDS8000B User Manual To assign a waveform to one of the four waveform databases of the instrument,use the procedure that follows: Overview To set up a waveform database Related control elements & resources Prerequisites 1. The...

Accessing Online Help 3- 168 CSA8000B & TDS8000B User Manual continue your setup. Overview help is there when you need to probe moredeeply into feature operation. H Use the manuals to read instructions on putting the instrument into service,procedures on reinstalling its product software, listin...

CSA8000B & TDS8000B User Manual 3- 175 Cleaning the Instrument Periodically you may need to clean the exterior of your instrument. To do so,follow the instructions in this section. WARNING. Before performing any procedure that follows, power down the instrument and disconnect it from line voltag...

Cleaning the Instrument 3- 176 CSA8000B & TDS8000B User Manual Flat Panel Display Cleaning The instrument display is a soft plastic display and must be treated with careduring cleaning. CAUTION. Improper cleaning agents or methods can damage the flat panel display.Avoid using abrasive cleaners o...

Appendix A: Specifications CSA8000B & TDS8000B User Manual A- 11 Certifications Table A- 10: Certifications and compliances Category Standards or description EC Declaration of Conformity --EMC Meets intent of Directive 89/336/EEC for Electromagnetic Compatibility when configured withsampling hea...

CSA8000B & TDS8000B User Manual B- 1 Appendix B: Automatic Measurements Reference This reference describes the automatic measurement system of this instrument.Automatic measurements support Pulse, Return-to-Zero (RZ), and Non-Return-to-Zero (NRZ) signals, providing measurements in three categori...

Appendix B: Automatic Measurements Reference B- 2 CSA8000B & TDS8000B User Manual Pulse Measurements - Amplitude Table B--1 describes on page B--2 describes each pulse measurement in theamplitude category. See Table B--2 on page B--8 for timing category measure-ments; see Table B--3 on page B--1...

Appendix B: Automatic Measurements Reference B- 8 CSA8000B & TDS8000B User Manual Pulse Measurements - Timing Table B--2 describes each pulse measurement in the timing category. See Tableon B--1 on page B--2 for amplitude category measurements; see Table B--3 onpage B--14 for area category measu...

Appendix B: Automatic Measurements Reference B- 14 CSA8000B & TDS8000B User Manual Pulse Measurement - Area Table B--3 describes each pulse measurement in the area category. See Table B--1on page B--2 amplitude-category measurements; see Table B--2 on page B--8for timing-category measurements. T...

B- 56 CSA8000B & TDS8000B User Manual Measurement Reference Parameters and Methods This reference topic describes the reference parameters (levels and crossings)used in taking the measurements. All Sources The methods available for calculating reference levels used in taking automaticmeasurement...

Measurement Reference Parameters and Methods CSA8000B & TDS8000B User Manual B- 57 Pulse Sources The automatic measurement system uses the following levels when measuringPulse source waveforms. For the Pulse measurements, and their definitions thatuse the levels described here, see page B--2. Tc...

Measurement Reference Parameters and Methods B- 58 CSA8000B & TDS8000B User Manual Tcross1 Mid-reference Tcross2 Tcross3 Figure B- 3: Pulse crossings and mid-reference level The following measurement parameters are normally used when measuringOptical Modulation Amplitude on a pulse. Crossings at...

Measurement Reference Parameters and Methods CSA8000B & TDS8000B User Manual B- 59 Eye aperature Power logic 1 Average optical power Tcross1 Tcross2 Tcross3 Power logic 0 Figure B- 4: AOP pulse crossings and mid-reference level High Low Max Figure B- 5: Overshoot levels Overshoot Levels

Measurement Reference Parameters and Methods B- 60 CSA8000B & TDS8000B User Manual RZ Sources The automatic measurement system uses the following levels when measuringRZ source waveforms. For the RZ measurements, and their definitions that usethe levels described here, see page B--15. The follow...

Measurement Reference Parameters and Methods CSA8000B & TDS8000B User Manual B- 61 The following measurement parameters are used when deriving RZ measure-ments. Tcross2 Mid reference Tcross1 Tcross3 Figure B- 7: RZ crossings RZ Crossings

Measurement Reference Parameters and Methods B- 62 CSA8000B & TDS8000B User Manual The following parameters are used when deriving measurements on RZwaveforms. Low High Eye aperture High reference Low reference Mid reference Figure B- 8: RZ eye- aperture parameters NRZ Sources The automatic meas...

Measurement Reference Parameters and Methods CSA8000B & TDS8000B User Manual B- 63 The following levels are used when deriving measurements on NRZ waveforms. TcrossH TcrossL High reference Low Low reference High Figure B- 9: NRZ measurement reference levels NRZ Measurement Reference Levels

Measurement Reference Parameters and Methods B- 64 CSA8000B & TDS8000B User Manual The following measurement parameters are used when deriving NRZ measure-ments. Tcross Cross level Figure B- 10: NRZ crossings NRZ Crossings

Measurement Reference Parameters and Methods B- 66 CSA8000B & TDS8000B User Manual The following measurement parameters are used when deriving overshootmeasurements on NRZ waveforms. Max High Low Figure B- 12: NRZ overshoot levels NRZ Overshoot Levels

Measurement Reference Parameters and Methods B- 68 CSA8000B & TDS8000B User Manual Tracking Methods This topic describes measurements methods tracking the High and Low valuesused in taking automatic measurements. The levels that the automatic measurement system derives as the High (Top) orLow (B...

Measurement Reference Parameters and Methods CSA8000B & TDS8000B User Manual B- 69 Low High Mid ref Mode Tracking Method Histogram high Histogram low Mode (of Histogram) sets the values statistically. Using a histogram, it selects the most commonvalue either above or below the midpoint (dependin...

Measurement Reference Parameters and Methods B- 70 CSA8000B & TDS8000B User Manual Use a Waveform Database This measurement needs to be performed using a statistical (waveform) database.When one is specified, the instrument acquires or computes the targetedmeasurement source, then accumulates it...

CSA8000B & TDS8000B User Manual Glossary- 1 Glossary Accuracy The closeness of the indicated value to the true value. Acquisition The process of sampling signals from input channels, digitizing the samplesinto data points, and assembling the data points into a waveform record. Thewaveform record...

CSA8000B & TDS8000B User Manual Index- 1 Index A Accessories list, 1-- 41optional, 1-- 42standard, 1-- 41 Accuracy, Glossary-- 1Acquiring Waveforms, 3-- 3Acquisition, Glossary-- 1 cycle, 3-- 29horizontal delay, 3-- 28horizontal delay time with, Glossary-- 5how to start and stop, 3-- 26input chan...