Tektronix CSA8000B, TDS8000B RZ Crossings

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

Contents

Main Page WARRANTY Page Table of Contents Getting Started Operating Basics Reference CSA8000B & TDS8000B User Manual iii Triggering 3--39................................................ Displaying Waveforms 3--53...................................... Measuring Waveforms 3--73..................................... Creating Math Waveforms 3--101.................................. iv CSA8000B & TDS8000B User Manual Data Input and Output 3--113..................................... Using Masks, Histograms, and Waveform Databases 3--141............ CSA8000B & TDS8000B User Manual v Accessing Online Help 3--167...................................... Appendices Appendix A: Specifications A--1.................................. Appendix B: Automatic Measurements Reference B--1.............. Measurement Reference Parameters and Methods B--56.............. Glossary Index List of Figures Page List of Tables General Safety Summary ToAvoidFireor Personal Injury Symbols and Terms Preface About This Manual Related Manuals and Online Documents Conventions Preface CSA8000B & TDS8000B User Manual xiii Contacting Tektronix Page Product Description Models Key Features Page Product Software Firmware Upgrade Sampling Modules Supported Page Page Check the Package Contents Page Installation Check the Environmental Requirements Site Considerations Install the Sampling Modules Operating Requirements Rackmount Requirements Check Your Sampling Module Manual(s) Maximum Configuration Connect the Peripherals Power On the Instrument Page Powering Off the Instrument Brightness and Contrast Adjustment (Gamma) Back Up User Files Software Installation Description Software Release Notes Operating System Reinstallation System Diagnostics Windows Safe Mode Incoming Inspection Assemble Equipment Perform the Diagnostics Page Perform the Compensation Perform the Functional Tests Verify Electrical Input Channels Page Page Verify Optical Input Channels Page Page Verify the Time Bases Work Page Page Page Perform Gated Trigger Test Page Page Page Page Page Perform the Hardware and Operating System Tests (Windows 98 Only) QA+Win32 Checking the Cooling Fan Operation Checking the Hardware and Operating System Page Accessories and Options Accessories Standard Optional Options Page Operational Maps 2-2 CSA8000B & TDS8000B User Manual Documentation Map Documentation Map CSA8000B & TDS8000B User Manual 2-3 System Overview Maps Functional Model Map Page System Overview Maps 2-6 CSA8000B & TDS8000B User Manual Process Overview Map CSA8000B & TDS8000B User Manual 2-7 User Interface Map -- Complete Control and Display 2-8 CSA8000B & TDS8000B User Manual Front Panel Map -- Quick Access to Most Often Used Features CSA8000B & TDS8000B User Manual 2-9 Display Map -- Single Graticule View 2-10 CSA8000B & TDS8000B User Manual Display Map -- Multiple Views CSA8000B & TDS8000B User Manual 2-11 Front Panel I/O Map 2-12 CSA8000B & TDS8000B User Manual Rear Panel I/O Map Overview Page Acquiring Waveforms Signal Connection and Scaling Page Page Page To Set Up the Signal Input CSA8000B & TDS8000B User Manual 3-9 3-10 CSA8000B & TDS8000B User Manual To Autoset the Instrument 3-12 CSA8000B & TDS8000B User Manual To Reset the Instrument Signal Conditioning Background Page Page Page Page Page Page Page Setting Acquisition Controls Page Page To Set Acquisition Modes CSA8000B & TDS8000B User Manual 3-25 3-26 CSA8000B & TDS8000B User Manual Use the procedure that follows to start and stop acquisition. To Start and Stop Acquisition Acquisition Control Background Acquisition Hardware Sampling Process Sampling Modes Waveform Record Acquisition Cycle FrameScan Acquisitions Page Page CSA8000B & TDS8000B User Manual 3-33 Use the procedure that follows to set up the instrument to acquire in FrameScan mode. To Acquire in FrameScan Mode 3-34 CSA8000B & TDS8000B User Manual CSA8000B & TDS8000B User Manual 3-35 3-36 CSA8000B & TDS8000B User Manual ToCatchaBitError CSA8000B & TDS8000B User Manual 3-37 Page Triggering Edge Triggering Page Page Page Page Page Page Page Page 3-48 CSA8000B & TDS8000B User Manual Use the procedure that follows when setting up the instrument to trigger acquisitions. To Trigger CSA8000B & TDS8000B User Manual 3-49 To Use Gated Trigger CSA8000B & TDS8000B User Manual 3-51 Page Displaying Waveforms Using the Waveform Display Page Page Page CSA8000B & TDS8000B User Manual 3-57 Table 3- 3: Operations performed based on the selected waveform Page Page Page CSA8000B & TDS8000B User Manual 3-61 Table 3- 4: Equivalent mouse and touchscreen operations 3-62 CSA8000B & TDS8000B User Manual Use the procedure that follows to become familiar with the display adjustments you can make. To Display Waveforms in the Main Time Base View CSA8000B & TDS8000B User Manual 3-63 To Display Waveforms in a Mag View CSA8000B & TDS8000B User Manual 3-65 3-66 CSA8000B & TDS8000B User Manual Customizing the Display Page 3-68 CSA8000B & TDS8000B User Manual Use the procedure that follows to become familiar with the display styles you can set. To Set Display Styles CSA8000B & TDS8000B User Manual 3-69 Use the procedure that follows to become familiar with the display adjustments you can make. To Customize the Graticule and Waveforms 3-70 CSA8000B & TDS8000B User Manual CSA8000B & TDS8000B User Manual 3-71 Page Measuring Waveforms Taking Automatic Measurements Whats Measured? Page Page Page Page Page To Take Automatic Measurements CSA8000B & TDS8000B User Manual 3-81 3-82 CSA8000B & TDS8000B User Manual CSA8000B & TDS8000B User Manual 3-83 To Localize a Measurement Page Taking Cursor Measurements Whats Measured? What Sources Can I Measure? Keys to Using Cursors Page Page CSA8000B & TDS8000B User Manual 3-89 Use the procedure that follows to take cursor measurements on waveforms. To Take a Cursor Measurement To Set the Cursor Sources CSA8000B & TDS8000B User Manual 3-91 Optimizing Measurement Accuracy Compensation To Compensate the Instrument and Modules Page 3-94 CSA8000B & TDS8000B User Manual CSA8000B & TDS8000B User Manual 3-95 To Deskew Channels CSA8000B & TDS8000B User Manual 3-97 To Perform Dark-Level and User Wavelength Gain Compensations CSA8000B & TDS8000B User Manual 3-99 Page Creating Math Waveforms Defining Math Waveforms Page Page Page To Define a Math Waveform 3- 106 CSA8000B & TDS8000B User Manual Operations on Math Waveforms Page CSA8000B & TDS8000B User Manual 3- 109 The procedure that follows demonstrates some common operations you can perform on math waveforms: To Use Math Waveforms 3-110 CSA8000B & TDS8000B User Manual Page Page Data Input and Output Saving and Recalling Setups Page To Save Your Setup 3-116 CSA8000B & TDS8000B User Manual CSA8000B & TDS8000B User Manual 3-117 3-118 CSA8000B & TDS8000B User Manual To Recall Your Setup CSA8000B & TDS8000B User Manual 3-119 Saving and Recalling Waveforms CSA8000B & TDS8000B User Manual 3- 121 To Save Your Waveform 3- 122 CSA8000B & TDS8000B User Manual CSA8000B & TDS8000B User Manual 3- 123 To Recall Your Waveform CSA8000B & TDS8000B User Manual 3- 125 Page To Clear References Exporting Waveforms and Histograms To Export Your Waveform To Export Your Histogram To Use an Exported Waveform (or Histogram) 3- 130 CSA8000B & TDS8000B User Manual CSA8000B & TDS8000B User Manual 3- 131 Printing Waveforms To Print Waveforms Page To Print Using Ink-saver Mode Page To Print to a File To Set High Color Page Remote Communication Page Using Masks, Histograms, and Waveform Databases Mask Testing Waveforms Page Page Page To Mask Test a Waveform 3- 146 CSA8000B & TDS8000B User Manual CSA8000B & TDS8000B User Manual 3- 147 Page To Edit a Mask 3- 150 CSA8000B & TDS8000B User Manual Counting Masks To Create a New Mask Page Taking Histograms Histograms 3- 156 CSA8000B & TDS8000B User Manual To Take a Histogram CSA8000B & TDS8000B User Manual 3- 157 Histogram Statistics Using Waveform Databases Page Page 3- 162 CSA8000B & TDS8000B User Manual To Set Up a Waveform Database Page 3- 164 CSA8000B & TDS8000B User Manual To Customize the Database Display CSA8000B & TDS8000B User Manual 3- 165 Page Accessing Online Help Whats Available? How to Use Online Help CSA8000B & TDS8000B User Manual 3- 169 Page Page 3- 172 CSA8000B & TDS8000B User Manual CSA8000B & TDS8000B User Manual 3- 173 3- 174 CSA8000B & TDS8000B User Manual Cleaning the Instrument Exterior Cleaning Flat Panel Display Cleaning Optical Connector Cleaning Appendix A: Specifications A-2 CSA8000B & TDS8000B User Manual Table A- 1: System - Signal acquisition (cont.) T able A - 2: CSA8000B & TDS8000B User Manual A-3 Table A- 2: System - Timebase (cont.) T able A - 3: A-4 CSA8000B & TDS8000B User Manual CSA8000B & TDS8000B User Manual A-5 A-6 CSA8000B & TDS8000B User Manual Table A- 4: System - Environmental CSA8000B & TDS8000B User Manual A-7 Table A- 5: Power consumption and cooling Table A- 6: Display A-8 CSA8000B & TDS8000B User Manual Table A- 7: Ports CSA8000B & TDS8000B User Manual A-9 Table A- 7: Ports (cont.) Table A- 8: Data storage A-10 CSA8000B & TDS8000B User Manual Table A- 9: Mechanical CSA8000B & TDS8000B User Manual A-11 Certifications Table A- 10: Certifications and compliances A-12 CSA8000B & TDS8000B User Manual Table A- 10: Certifications and compliances (cont.) Appendix B: Automatic Measurements Reference B-2 CSA8000B & TDS8000B User Manual Pulse Measurements - Amplitude CSA8000B & TDS8000B User Manual B-3 B-4 CSA8000B & TDS8000B User Manual CSA8000B & TDS8000B User Manual B-5 B-6 CSA8000B & TDS8000B User Manual CSA8000B & TDS8000B User Manual B-7 Pulse Measurements - Timing CSA8000B & TDS8000B User Manual B-9 B-10 CSA8000B & TDS8000B User Manual CSA8000B & TDS8000B User Manual B-11 B-12 CSA8000B & TDS8000B User Manual CSA8000B & TDS8000B User Manual B-13 Pulse Measurement - Area CSA8000B & TDS8000B User Manual B-15 Return-to-Zero (RZ) Measurements - Amplitude B-16 CSA8000B & TDS8000B User Manual CSA8000B & TDS8000B User Manual B-17 B-18 CSA8000B & TDS8000B User Manual CSA8000B & TDS8000B User Manual B-19 B-20 CSA8000B & TDS8000B User Manual CSA8000B & TDS8000B User Manual B-21 B-22 CSA8000B & TDS8000B User Manual CSA8000B & TDS8000B User Manual B-23 B-24 CSA8000B & TDS8000B User Manual CSA8000B & TDS8000B User Manual B-25 B-26 CSA8000B & TDS8000B User Manual CSA8000B & TDS8000B User Manual B-27 B-28 CSA8000B & TDS8000B User Manual CSA8000B & TDS8000B User Manual B-29 Return-to-Zero (RZ) Measurements - Timing B-30 CSA8000B & TDS8000B User Manual CSA8000B & TDS8000B User Manual B-31 B-32 CSA8000B & TDS8000B User Manual CSA8000B & TDS8000B User Manual B-33 B-34 CSA8000B & TDS8000B User Manual CSA8000B & TDS8000B User Manual B-35 B-36 CSA8000B & TDS8000B User Manual Return-to-Zero (RZ) Measurements - Area CSA8000B & TDS8000B User Manual B-37 Non-Return-to-Zero (NRZ) Measurements - Amplitude B-38 CSA8000B & TDS8000B User Manual CSA8000B & TDS8000B User Manual B-39 B-40 CSA8000B & TDS8000B User Manual CSA8000B & TDS8000B User Manual B-41 B-42 CSA8000B & TDS8000B User Manual CSA8000B & TDS8000B User Manual B-43 B-44 CSA8000B & TDS8000B User Manual CSA8000B & TDS8000B User Manual B-45 B-46 CSA8000B & TDS8000B User Manual CSA8000B & TDS8000B User Manual B-47 B-48 CSA8000B & TDS8000B User Manual CSA8000B & TDS8000B User Manual B-49 Non-Return-to-Zero (NRZ) Measurements - Timing CSA8000B & TDS8000B User Manual B-51 B-52 CSA8000B & TDS8000B User Manual CSA8000B & TDS8000B User Manual B-53 B-54 CSA8000B & TDS8000B User Manual CSA8000B & TDS8000B User Manual B-55 Non-Return-to-Zero (NRZ) Measurements - Area Measurement Reference Parameters and Methods All Sources Reference-Level Calculation Methods Pulse Sources Pulse Measurement Reference Levels Page Overshoot Levels RZ Sources RZ Crossings NRZ Sources RZ Eye-Aperture Parameters Page Page Page Page NRZ Crossings (OMA) Tracking Methods Mid-reference Level To Optimize the Vertical Resolution Page Glossary Page Page Page Page Page Page Page Page Page CSA8000B & TDS8000B User Manual Index- 1 Index A B Index- 2 CSA8000B & TDS8000B User Manual C D CSA8000B & TDS8000B User Manual Index- 3 E F G H Index- 4 CSA8000B & TDS8000B User Manual I K L M CSA8000B & TDS8000B User Manual Index- 5 N Index- 6 CSA8000B & TDS8000B User Manual O P CSA8000B & TDS8000B User Manual Index- 7 Q R S Index- 8 CSA8000B & TDS8000B User Manual T CSA8000B & TDS8000B User Manual Index- 9 U V W Index- 10 CSA8000B & TDS8000B User Manual Y Z