LeCroy WavePro 7 Zi series, DDA 7 Zi series, SDA 7 Zi series, WavePro DDA 7 Zi series, WavePro SDA 7 Zi series Operator's Manual

Operator’s

Manual

WavePro, ® SDA, and DDA

7 Zi Series Oscilloscopes

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LeCroy Corporation

700 Chestnut Ridge Road Chestnut Ridge, NY, 10977-6499 Tel: (845) 578-6020, Fax: (845) 578 5985

Warranty

NOTE: THE WARRANTY BELOW REPLACES ALL OTHER WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY OF

MERCHANTABILITY, FITNESS, OR ADEQUACY FOR ANY PARTICULAR PURPOSE OR USE. LECROY SHALL NOT BE LIABLE FOR ANY SPECIAL, INCIDENTAL, OR

CONSEQUENTIAL DAMAGES, WHETHER IN CONTRACT OR OTHERWISE. THE CUSTOMER IS RESPONSIBLE FOR THE TRANSPORTATION AND INSURANCE

CHARGES FOR THE RETURN OF PRODUCTS TO THE SERVICE FACILITY. LECROY WILL RETURN ALL PRODUCTS UNDER WARRANTY WITH TRANSPORT

PREPAID.

The oscilloscope is warranted for normal use and operation, within specifications, for a period of three years from shipment. LeCroy will either repair or, at our option, replace

any product returned to one of our authorized service centers within this period. However, in order to do this we must first examine the product and find that it is defective due to

workmanship or materials and not due to misuse, neglect, accident, or abnormal conditions or operation.

LeCroy shall not be responsible for any defect, damage, or failure caused by any of the following: a) attempted repairs or installations by personnel other than LeCroy

representatives or b) improper connection to incompatible equipment, or c) for any damage or malfunction caused by the use of non-LeCroy supplies. Furthermore, LeCroy shall

not be obligated to service a product that has been modified or integrated where the modification or integration increases the task duration or difficulty of servicing the

oscilloscope. Spare and replacement parts, and repairs, all have a 90-day warranty.

The oscilloscope’s firmware has been thoroughly tested and is presumed to be functional. Nevertheless, it is supplied without warranty of any kind covering detailed

performance. Products not made by LeCroy are covered solely by the warranty of the original equipment manufacturer.

LeCroy, ActiveDSO, JitterTrack, WavePro, WaveMaster, WaveSurfer, WaveLink, WaveExpert, Waverunner, and WaveAce are registered trademarks of LeCroy Corporation. Other product or brand names are trademarks or requested trademarks of their respective holders. Information in this publication supersedes all earlier versions. Specifications are subject to change without notice.

This electronic product is subject to disposal and

Manufactured under an ISO 9000

Registered Quality Management

System.

Visit www.lecroy.com to view the

certificate.

recycling regulations that vary by country and region.

Many countries prohibit the disposal of waste electronic

equipment in standard waste receptacles.

For more information about proper disposal and recycling

of your LeCroy product, please visit

www.lecroy.com/recycle

916494 RevA

Getting Started Manual

TABLE OF CONTENTS

Welcome ...........................................................................................................................22

WavePro 700Zi Features ........................................................................................... 22

Comprehensive Core Functions (1000Base-T through Vertical) ............................... 22

Compatible Options and Accessories ........................................................................ 22

Reference................................................................................................................... 22

Support .......................................................................................................................22

Thank You .................................................................................................................. 22

Cable De-Embedding ...................................................................................................... 23

Setting Up Cable De-Embedding ............................................................................... 23

Saving Cable Configurations ..................................................................................... 23

Sequence Sampling Mode – Working with Segments ................................................ 24

Sequence Display Modes .......................................................................................... 25

Setting Up Sequence Mode ....................................................................................... 25

Zooming Segments in Sequence Mode .....................................................................27

Displaying an Individual Segment .............................................................................. 28

Viewing Time Stamps ................................................................................................ 28

Spectrum Analyzer .......................................................................................................... 29

Running the Spectrum Analyzer ................................................................................ 29

TriggerScan .....................................................................................................................30

Training TriggerScan ................................................................................................. 31

Starting TriggerScan .................................................................................................. 32

Saving TriggerScan Setups ....................................................................................... 32

Front Panel .......................................................................................................................33

Detaching and Attaching the Front Panel .................................................................. 34

Side Panel ........................................................................................................................35

Back Panel .......................................................................................................................36

External Monitor ..............................................................................................................37

Dual Channel Acquisition ...............................................................................................39

Combining Channels ..................................................................................................39

Hardware and Software Controls .................................................................................. 39

Front Panel Controls ....................................................................................................... 39

Front Panel Groupings ................................................................................................... 41

Miscellaneous Setup Controls ................................................................................... 41

Trigger Front Panel Controls ......................................................................................41

Horizontal Front Panel Controls ................................................................................. 42

Vertical Front Panel Controls ..................................................................................... 42

Cursors Front Panel Controls .................................................................................... 42

WaveScan Front Panel Controls ............................................................................... 43

General Controls Front Panel Controls ...................................................................... 44

Zoom and Math Front Panel Controls ........................................................................44

Screen Layout, Groupings, and Controls ..................................................................... 45

Menu Bar.................................................................................................................... 45

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The Signal Display Grid ............................................................................................. 45

Dialog Area ................................................................................................................ 46

Universal ProBus/ProLink Interface ..............................................................................46

ProLink Interface .............................................................................................................49

Connecting the Adapters ........................................................................................... 49

Auxiliary Output Signals ................................................................................................ 50

Auxiliary Output Setup ............................................................................................... 50

Pass/Fail Testing .............................................................................................................51

Comparing Parameters .............................................................................................. 51

Mask Tests ................................................................................................................. 51

Actions .......................................................................................................................52

Pass/Fail Testing Setup ............................................................................................. 52

Introduction to WaveScan .............................................................................................. 55

Signal Views .............................................................................................................. 55

Search Modes ............................................................................................................ 55

Parameter Measurements ......................................................................................... 56

Sampling Mode .......................................................................................................... 56

Source View .....................................................................................................................56

Level Markers ............................................................................................................ 56

Scan Overlay ...................................................................................................................57

Scan Histogram ............................................................................................................... 58

Zoom View .......................................................................................................................59

Edge Mode .......................................................................................................................59

Non-monotonic Mode ..................................................................................................... 61

Runt Mode ........................................................................................................................62

Measurement Mode .........................................................................................................63

Scan Filters ................................................................................................................ 64

Filter Wizard .....................................................................................................................64

Filter Methods ..................................................................................................................65

Auxiliary Output Signals ................................................................................................ 66

Auxiliary Output Setup ............................................................................................... 66

Customization Overview ................................................................................................ 67

Solutions ..........................................................................................................................68

Examples ................................................................................................................... 68

What is Excel? .................................................................................................................70

What is MATLAB? ........................................................................................................... 71

What is VBS? ...................................................................................................................71

What Can You Do with a Customized Scope? ............................................................. 72

Scaling and Display ................................................................................................... 72

Golden Waveforms .................................................................................................... 72

A practical example – DVI Data-Clock skew ............................................................. 73

Calling Excel Directly from the Oscilloscope ...............................................................73

How to Select a Math Function Call .............................................................................. 73

How to Select a Parameter Function Call ..................................................................... 73

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Excel Control Dialog ....................................................................................................... 73

Entering a File Name ................................................................................................. 74

Organizing Excel Sheets ................................................................................................ 74

Setting the Vertical Scale ............................................................................................... 75

Trace Descriptors ............................................................................................................ 75

Multiple Inputs and Outputs ...........................................................................................75

Simple Excel Example 1 ............................................................................................ 76

Exponential Decay Time Constant ................................................................................ 82

Gated Parameter Using Excel ........................................................................................ 83

How Does this Work? ................................................................................................ 84

Correlation Excel Waveform Function .......................................................................... 84

Multiple Traces on One Grid .......................................................................................... 85

Using a Surface Plot ....................................................................................................... 87

Loading and Saving VBScripts ...................................................................................... 88

Example Waveform Function Script: Square of a Waveform .................................... 88

Example Parameter Function Script: RMS of a Waveform ....................................... 89

The Default Waveform Function Script: Explanatory Notes ...................................... 89

Default Parameter Function Script ................................................................................ 91

Hints and Tips for VBScripting ...................................................................................... 91

Errors ................................................................................................................................ 92

Error Handling .................................................................................................................93

Speed of Execution ......................................................................................................... 94

Scripting Ideas................................................................................................................. 94

Example Waveform Script .............................................................................................. 94

Example Parameter Script ..............................................................................................95

Debugging Scripts .......................................................................................................... 95

Calling MATLAB from the Scope ................................................................................... 95

Selecting a Waveform Function Call ............................................................................. 96

MATLAB Waveform Control Panel ................................................................................ 97

MATLAB Waveform Function Editor ............................................................................. 97

MATLAB Example Waveform Plot ................................................................................. 99

Selecting a MATLAB Parameter Call ........................................................................... 100

MATLAB Parameter Control Panel .............................................................................. 100

MATLAB Parameter Editor ........................................................................................... 101

MATLAB Example Parameter Panel ............................................................................ 102

Further Examples of MATLAB Waveform Functions ................................................ 103

Creating your Own MATLAB Function ....................................................................... 104

Display Setup.................................................................................................................105

Sequence Mode Display .......................................................................................... 106

Moving Traces from Grid to Grid ................................................................................. 106

XY Display ......................................................................................................................107

Setting Up XY Displays ............................................................................................ 107

Custom Grids................................................................................................................. 107

Zooming Waveforms ..................................................................................................... 107

Previewing Zoomed Waveforms .............................................................................. 108

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Zooming a Single Channel ........................................................................................... 108

Touch-and-Drag Zooming ............................................................................................ 109

Quickly Zooming Multiple Waveforms ........................................................................ 109

Multi-Zoom .....................................................................................................................109

Persistence Setup ......................................................................................................... 110

Setting Up Persistence ............................................................................................ 110

3-Dimensional Persistence - Not Available in All Scopes ........................................ 111

Setting up 3-Dimensional Persistence ..................................................................... 112

Show Last Trace ............................................................................................................ 112

Persistence Time ........................................................................................................... 113

Locking Traces (Not Available in All Oscilloscopes) ................................................ 113

Creating and Viewing a Histogram .............................................................................. 113

Setting Up a Single Parameter Histogram ............................................................... 113

Viewing Thumbnail Histograms (Histicons) ............................................................. 114

Persistence Histogram (JTA2 option) ...................................................................... 114

Persistence Trace Range ........................................................................................ 114

Persistence Sigma ................................................................................................... 115

Histogram Theory of Operation ................................................................................... 115

DSO Process ........................................................................................................... 116

Parameter Buffer ......................................................................................................116

Capture of Parameter Events .................................................................................. 116

Histogram Parameters (XMAP and JTA2 Options) ................................................. 117

Histogram Peaks ......................................................................................................117

Binning and Measurement Accuracy ....................................................................... 118

Full Width at Half Maximum ......................................................................................... 118

Full Width at xx% Maximum ......................................................................................... 119

Histogram Amplitude .................................................................................................... 120

Histogram Root Mean Square ...................................................................................... 121

Histogram Top ............................................................................................................... 121

Maximum Population .................................................................................................... 122

Mode ...............................................................................................................................122

Percentile .......................................................................................................................123

Peaks ..............................................................................................................................123

Range .............................................................................................................................124

Total Population ............................................................................................................ 125

X Coordinate of xxth Peak ............................................................................................. 125

Restoring Software ....................................................................................................... 126

System Recovery for Oscilloscopes Running Windows XP and Vista .................... 126

Recovery Procedure ................................................................................................ 126

Restarting the Application ........................................................................................ 130

Restarting the Operating System ............................................................................. 130

Removable Hard Drive .................................................................................................. 130

Introduction to LabNotebook ....................................................................................... 131

Preferences ....................................................................................................................131

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Setting Preferences ................................................................................................. 131

Creating a Notebook Entry ........................................................................................... 132

Recalling Notebook Entries ......................................................................................... 135

Creating a Report .......................................................................................................... 136

Previewing a Report ................................................................................................. 136

Locating a Notebook Entry .......................................................................................136

Creating the Report .................................................................................................. 137

Formatting the Report .............................................................................................. 137

Managing Notebook Entry Data ................................................................................... 137

Adding Annotations .................................................................................................. 137

Deleting Notebook Entries ....................................................................................... 138

Saving Notebook Entries to a Folder ....................................................................... 138

Managing the Database ........................................................................................... 138

Introduction to Math Traces and Functions ............................................................... 139

Math Made Easy ............................................................................................................ 139

Setting Up a Math Function ..................................................................................... 140

Resampling to Deskew ................................................................................................. 141

Deskewing................................................................................................................ 141

Rescaling and Assigning Units ................................................................................... 141

Rescaling Setup ....................................................................................................... 142

Averaging Waveforms .................................................................................................. 142

Summed vs. Continuous Averaging ........................................................................ 142

Setting Up Continuous Averaging ............................................................................ 143

Setting Up Summed Averaging ............................................................................... 143

Enhanced Resolution ................................................................................................... 143

How the Instrument Enhances Resolution ...............................................................144

Setting Up Enhanced Resolution (ERES) ................................................................145

Waveform Copy ............................................................................................................. 146

Waveform Sparser ........................................................................................................ 146

Waveform Sparser Setup .........................................................................................146

Interpolation...................................................................................................................146

Setting Up Interpolation ........................................................................................... 146

Demodulation ................................................................................................................ 147

Theory of Operation ................................................................................................. 147

Setting Up Demodulation ......................................................................................... 147

Fast Wave Port Introduction ........................................................................................ 148

Fast Wave Port Setup ................................................................................................... 149

Setup - Case 1 ......................................................................................................... 150

Setup - Case 2 ......................................................................................................... 150

Setup - Case 3 ......................................................................................................... 150

Fast Wave Port Operational Notes .............................................................................. 150

FFT Setup .......................................................................................................................151

Setting Up an FFT .................................................................................................... 151

Why Use FFT? ...............................................................................................................151

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WP700Zi-GSM-E-RevA

Power (Density) Spectrum ....................................................................................... 152

Memory for FFT ....................................................................................................... 152

FFT Pitfalls to Avoid ................................................................................................. 152

Picket Fence and Scallop ........................................................................................ 152

Leakage ................................................................................................................... 152

Choosing a Window ................................................................................................. 152

Improving Dynamic Range ...................................................................................... 153

Record Length ......................................................................................................... 153

FFT Algorithms .............................................................................................................. 154

Glossary .........................................................................................................................155

Processing Web (XWEB) .............................................................................................. 157

To Use the Web Editor .............................................................................................157

Measuring with Cursors ............................................................................................... 159

Cursor Measurement Icons ..................................................................................... 159

Cursors Setup ............................................................................................................... 160

Quick Display ........................................................................................................... 160

Setting Up Absolute Cursors ................................................................................... 160

Setting Up Relative Cursors .................................................................................... 161

Cursors on Math Functions ...................................................................................... 161

Overview of Parameters ............................................................................................... 161

Turning On Parameters ........................................................................................... 161

Quick Access to Parameter Setup Dialogs .............................................................. 161

Parameter Setup ............................................................................................................ 162

Parameter Status ........................................................................................................... 164

Status Symbols ........................................................................................................ 164

Statistics ........................................................................................................................166

Measure Modes ............................................................................................................. 166

Standard Vertical Parameters .................................................................................. 167

Standard Horizontal Parameters ............................................................................. 167

Selecting Measure Modes ....................................................................................... 167

Parameter Math ............................................................................................................. 167

Logarithmic Parameters ........................................................................................... 167

Excluded Parameters ...............................................................................................168

Parameter Script Parameter Math ........................................................................... 168

Setting Up Parameter Math ..................................................................................... 170

Setting Up Parameter Script Math ........................................................................... 170

Measure Gate ................................................................................................................. 170

Help Markers ..................................................................................................................172

Customizing a Parameter ............................................................................................. 173

List of Parameters ......................................................................................................... 174

Qualified Parameters .................................................................................................... 194

Range Limited Parameters ...................................................................................... 194

Waveform Gated Parameters .................................................................................. 195

EMC Parameters ............................................................................................................ 195

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Getting Started Manual

Determining Top and Base Lines ................................................................................ 196

Determining Rise and Fall Times ................................................................................ 196

Determining Time Parameters ..................................................................................... 197

Determining Differential Time Measurements ............................................................197

Level and Slope ............................................................................................................. 198

Print, Plot, or Copy ........................................................................................................ 198

Printing ...........................................................................................................................198

Setting Up the Printer ...............................................................................................198

Printing a Screen Image .......................................................................................... 199

Adding Printers and Drivers ..................................................................................... 199

Managing Files .............................................................................................................. 199

Hard Disk Partitions ................................................................................................. 199

Sampling Modes ............................................................................................................ 200

Selecting a Sampling Mode ..................................................................................... 200

Single-shot Sampling Mode ......................................................................................... 200

Basic Capture Technique .........................................................................................200

RIS Sampling Mode - For Higher Sampling Rates ..................................................... 200

Roll Mode .......................................................................................................................201

WaveStream Mode ........................................................................................................ 201

Adjusting Trace Intensity ..........................................................................................202

Saving and Recalling Scope Settings ......................................................................... 202

Saving Scope Settings ............................................................................................. 202

Recalling Scope Settings ......................................................................................... 202

Recalling Default Settings ........................................................................................ 203

Saving and Recalling Waveforms ............................................................................... 203

Saving Waveforms ................................................................................................... 203

Recalling Waveforms ............................................................................................... 205

Disk Utilities ...................................................................................................................205

Deleting a Single File ............................................................................................... 205

Deleting All Files in a Folder .................................................................................... 205

Creating a Folder ..................................................................................................... 206

Introduction to Serial Decode ...................................................................................... 206

Overview .................................................................................................................. 206

TD Series Software ....................................................................................................... 207

D Series Software .......................................................................................................... 207

Technical Overview ....................................................................................................... 208

Serial Trigger .................................................................................................................208

Serial Decode ................................................................................................................ 208

Table Display .................................................................................................................209

Accessing Overview ..................................................................................................... 209

Trigger ............................................................................................................................209

Serial Decode and Decode Setup ................................................................................ 209

Serial Decode (Summary) Dialog Box ......................................................................... 210

Decode Setup Dialog .................................................................................................... 211

Protocol Results Table ................................................................................................. 213

WP700Zi-GSM-E-RevA

Searching for Messages ............................................................................................... 214

Overview of I2CBus Options ........................................................................................ 215

Accessing Serial Triggers ............................................................................................ 216

Creating an I2C Trigger Condition ............................................................................... 216

I2C Decode Setup Detail ............................................................................................... 217

Setup Mode ....................................................................................................................218

Sources Setup ............................................................................................................... 218

Trigger Type Selection ................................................................................................. 218

Address Setup ............................................................................................................... 218

Data Setup......................................................................................................................219

Frame Length Setup ..................................................................................................... 220

Ack Setup .......................................................................................................................221

Overview of SPIbus .......................................................................................................221

Accessing SPI Serial Triggers ..................................................................................... 222

Creating a SPI Trigger Condition ................................................................................ 222

SPI Decode Setup Detail ...............................................................................................223

SPI Setup Mode ............................................................................................................. 224

SPI Sources Setup ........................................................................................................ 224

SPI Trigger Type Selection........................................................................................... 224

SPI Address Setup ........................................................................................................ 224

SPI Data Setup ............................................................................................................... 225

SPI Frame Length Setup ...............................................................................................227

SPI Ack Setup ................................................................................................................ 228

Overview of Serial Bus Activity ................................................................................... 228

Capturing Long Pre-Trigger Time ............................................................................... 228

Saving Data ....................................................................................................................229

Storing Triggers ............................................................................................................ 229

I2C and SPI Specifications ............................................................................................ 233

Timebase Setup and Control ....................................................................................... 234

Setting up additional timebase setup and controls .................................................. 234

Autosetup.......................................................................................................................235

Real Time (SMART) Memory ........................................................................................ 235

Setting Up Real Time (SMART) Memory .................................................................235

External Timebase vs. External Clock ........................................................................ 235

Creating and Viewing a Trend ..................................................................................... 236

Creating a Track View ................................................................................................... 236

Trigger Types ................................................................................................................ 237

Aux Input Trigger .......................................................................................................... 239

Aux Input Trigger Setup ........................................................................................... 239

Software Assisted Trigger............................................................................................ 239

Software Assisted Trigger Setup ............................................................................. 240

Example ................................................................................................................... 240

Edge Trigger on Simple Signals .................................................................................. 241

Trigger Settings ........................................................................................................ 241

Edge Trigger Setup .................................................................................................. 242

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Width Trigger .................................................................................................................243

How Width Trigger Works ........................................................................................ 243

Width Trigger Setup ................................................................................................. 243

Qualified Trigger ........................................................................................................... 244

How Qualified Triggers Work ................................................................................... 244

Qualified First Trigger .............................................................................................. 245

Edge Qualified Trigger Setup................................................................................... 245

State Triggers .......................................................................................................... 245

Pattern (Logic) Trigger ................................................................................................. 246

How Pattern Trigger Works ......................................................................................246

Pattern Trigger Setup ...............................................................................................247

TV Trigger ......................................................................................................................248

TV Trigger Setup ...................................................................................................... 248

Custom TV Standard Trigger Setup ........................................................................ 249

SMART Triggers ............................................................................................................ 250

Glitch Trigger .................................................................................................................251

How Glitch Trigger Works ........................................................................................ 251

Glitch Trigger Setup ................................................................................................. 251

Interval Trigger ..............................................................................................................252

How Interval Triggers Work ..................................................................................... 252

Interval Trigger Setup .............................................................................................. 254

Dropout Trigger ............................................................................................................. 255

How Dropout Trigger Works .................................................................................... 255

Dropout Trigger Setup ............................................................................................. 255

Runt Trigger ...................................................................................................................256

Runt Trigger Setup ...................................................................................................256

Slew Rate .......................................................................................................................257

Slew Rate Trigger Setup .......................................................................................... 258

Trigger Setup Considerations......................................................................................259

Trigger Modes .......................................................................................................... 259

Determining Trigger Level, Slope, Source, and Coupling ....................................... 259

Trigger Source ......................................................................................................... 260

Holdoff by Time or Events ............................................................................................260

Hold Off by Time ...................................................................................................... 261

Hold Off by Events ................................................................................................... 261

Optimizing for High Frequency.................................................................................... 261

TriggerScan ...................................................................................................................262

Training TriggerScan ............................................................................................... 262

Starting TriggerScan ................................................................................................ 263

Saving TriggerScan Setups ..................................................................................... 264

Status .............................................................................................................................264

Accessing the System Status Dialog ....................................................................... 264

Remote communication ............................................................................................... 264

WP700Zi-GSM-E-RevA

Setting Up Remote Communication. ....................................................................... 264

Configuring the Remote Control Assistant Event Log ............................................. 265

Hardcopy ........................................................................................................................265

Printing ..................................................................................................................... 265

Clipboard .................................................................................................................. 265

File ...........................................................................................................................265

E-Mail ....................................................................................................................... 266

Auxiliary Output Signals .............................................................................................. 266

Setting Up Auxiliary Output ...................................................................................... 267

Date and Time ................................................................................................................ 267

Setting the Date and Time Manually ........................................................................267

Setting the Date and Time from the Internet ........................................................... 267

Setting the Date and Time from Windows ............................................................... 268

Options ...........................................................................................................................268

Preferences ....................................................................................................................268

Enabling Audible Feedback ..................................................................................... 268

Enabling Auto-calibration ......................................................................................... 269

Optimizing Performance .......................................................................................... 269

Setting an Offset Control.......................................................................................... 269

Setting a Delay Control ............................................................................................ 269

Configuring E-mail Settings ..................................................................................... 269

Acquisition Status ......................................................................................................... 270

Service ............................................................................................................................270

Show Windows Desktop ...............................................................................................270

Touch Screen Calibration .............................................................................................270

Adjusting Sensitivity and Position .............................................................................. 271

Adjusting Sensitivity ................................................................................................. 271

Adjusting the Waveform's Position .......................................................................... 271

Coupling .........................................................................................................................271

Overload Protection ................................................................................................. 271

Setting Coupling .......................................................................................................271

Probe Attenuation ......................................................................................................... 271

Setting up Probe Attenuation ................................................................................... 271

Bandwidth Limits .......................................................................................................... 272

Setting Bandwidth Limits.......................................................................................... 272

Linear and (SinX)/X Interpolation ................................................................................ 272

Interpolation Setup ................................................................................................... 272

Inverting Waveforms ................................................................................................ 272

Finding Scale .................................................................................................................272

Using Find Scale ...................................................................................................... 272

Variable Gain .................................................................................................................272

Enabling Variable Gain ............................................................................................ 273

Channel Deskew ............................................................................................................ 273

Channel Deskew Setup ........................................................................................... 273

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Group Delay Compensation ......................................................................................... 273

Dark Calibration ............................................................................................................ 274

Performing Dark Calibration..................................................................................... 274

What Can AORM Do? .................................................................................................... 274

Histogramming .............................................................................................................. 274

Trending .........................................................................................................................274

Model of Optical Recording Processing ..................................................................... 274

Selecting Parameters .................................................................................................... 274

BES or EES Table ................................................................................................... 275

Setup and Measurement Dialog................................................................................... 275

AORM Measurement Menus .........................................................................................276

Measurements Table ..................................................................................................... 279

View Menu Selections ................................................................................................... 280

Equalizer and PLL Dialog ............................................................................................. 280

Creating and Analyzing Histograms ........................................................................... 281

Selecting the Histogram Function ............................................................................ 281

Histogram Trace Setup Dialog ................................................................................. 281

Setting Binning and Histogram Scale ...................................................................... 282

Displaying Trends ......................................................................................................... 282

To Configure a Trend: .............................................................................................. 283

Trend Calculation .......................................................................................................... 283

Parameter Buffer ...................................................................................................... 284

Capture of Parameter Events .................................................................................. 284

How to Read Trends ................................................................................................ 284

View Modes ....................................................................................................................284

Configuration Options .................................................................................................. 285

Configuration Menus .................................................................................................... 286

Setting Levels ................................................................................................................287

SETTING nT ................................................................................................................... 289

Maximizing Performance .............................................................................................. 289

Pit or Space Identification ............................................................................................ 289

nT Pit-Space Categorization ........................................................................................ 290

Beginning Edge Shift (BES) ......................................................................................... 291

Description ............................................................................................................... 291

Display Options ........................................................................................................ 292

Beginning Edge Shift Sigma (BESS) ........................................................................... 293

Description ............................................................................................................... 293

Display Options ........................................................................................................ 293

ENDING EDGE SHIFT (EES) ......................................................................................... 294

Description ............................................................................................................... 294

Display Options ........................................................................................................ 295

Ending Edge Shift Sigma (EESS) ................................................................................ 295

Display Options ........................................................................................................ 296

Beginning Ending Edge Shift (BEES) ......................................................................... 296

Display Options ........................................................................................................ 297

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Dp2c - DELTA PIT TO CLOCK ...................................................................................... 298

Description ............................................................................................................... 298

Display Options ........................................................................................................ 299

Dp2cs - DELTA PIT TO CLOCK SIGMA ....................................................................... 300

Description ............................................................................................................... 300

Display Options ........................................................................................................ 300

EDGSH - EDGE SHIFT ...................................................................................................301

Description ............................................................................................................... 301

Display Options ........................................................................................................ 301

More On Edge Shift ................................................................................................. 302

LPER - Local Period ...................................................................................................... 303

Description ............................................................................................................... 303

Display Options ........................................................................................................ 303

PAA - PIT AVERAGE AMPLITUDE ............................................................................... 304

Description ............................................................................................................... 304

Display Options ........................................................................................................ 304

PASYM - PIT ASYMMETRY ...........................................................................................305

Description ............................................................................................................... 305

Display Options ........................................................................................................ 305

PBASE - PIT BASE ........................................................................................................ 306

Display Options ........................................................................................................ 306

PMAX - PIT MAXIMUM .................................................................................................. 307

Description ............................................................................................................... 307

Display Options ........................................................................................................ 308

PMIDL - PIT MIDDLE LEVEL ......................................................................................... 308

Description ............................................................................................................... 308

Display Options ........................................................................................................ 309

PMIN - PIT MINIMUM ..................................................................................................... 310

Description ............................................................................................................... 310

Display Options ........................................................................................................ 310

PMODA - PIT MODULATION AMPLITUDE .................................................................. 311

Description ............................................................................................................... 311

Display Options ........................................................................................................ 311

PNUM - PIT NUMBER .................................................................................................... 312

Description ............................................................................................................... 312

Display Options ........................................................................................................ 313

PRES - PIT RESOLUTION ............................................................................................. 313

Description ............................................................................................................... 313

Display Options ........................................................................................................ 314

PTOP - PIT TOP ............................................................................................................. 315

Description ............................................................................................................... 315

Display Options ........................................................................................................ 315

PWID - PIT WIDTH ......................................................................................................... 316

Description ............................................................................................................... 316

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Display Options ........................................................................................................ 316

T@Pit - TIME AT PIT ...................................................................................................... 319

Description ............................................................................................................... 319

TIMJ - TIMING JITTER ................................................................................................... 321

Description ............................................................................................................... 321

Display Options ........................................................................................................ 322

More About Timing Jitter .......................................................................................... 323

Signals, Coupling, and Threshold Settings ................................................................ 324

Choice of Signals .......................................................................................................... 324

Coupling .........................................................................................................................324

Threshold Selection ...................................................................................................... 324

Using Parameters with Trends and XY Plots ............................................................. 325

Example and Step-by-Step Instructions ..................................................................... 325

Improving Horizontal Measurement Accuracy ...........................................................327

Base and Top Calculation ............................................................................................ 328

Introduction to AORM Theory ...................................................................................... 329

LeCroy DSO Process .................................................................................................... 329

Histogram Parameters .................................................................................................. 330

Zoom Traces and Segmented Waveforms ................................................................. 331

Histogram Peaks ........................................................................................................... 331

Example ................................................................................................................... 332

Binning and Measurement Accuracy .......................................................................... 332

DVD Processing Model ................................................................................................. 332

DVD RAM ........................................................................................................................332

Filtering ..........................................................................................................................333

Slicer...............................................................................................................................334

Notes on ODATA Math Function ................................................................................. 334

Equalized ........................................................................................................................334

Operational Notes .................................................................................................... 335

Leveled ...........................................................................................................................336

Sliced ..............................................................................................................................336

Extract CLK ....................................................................................................................337

How the Starting VCO Frequency & Phase Are Determined .................................... 340

Introduction to 8B/10B .................................................................................................. 341

Description of Encoding and Decoding ....................................................................341

Running Disparity ......................................................................................................... 341

Recommended System Configuration ........................................................................ 343

Option Key Installation ................................................................................................. 343

Loading a Waveform into the Serial Bus Analyzer – Decode Setup ........................ 344

Searching for a Symbol or Hex Equivalent ................................................................ 344

Creating a Symbol-decoded Output File from a Waveform -- Export Setup ........... 345

CustomDSO Overview .................................................................................................. 346

Invoking CustomDSO ................................................................................................... 346

CustomDSO Basic Mode .............................................................................................. 347

Editing a CustomDSO Setup File................................................................................. 347

WP700Zi-GSM-E-RevA

Creating a CustomDSO Setup File .............................................................................. 348

CustomDSO PlugIn Mode .............................................................................................349

Creating a CustomDSO PlugIn .................................................................................... 349

Properties of the Control and Its Objects ................................................................... 350

Removing a PlugIn ........................................................................................................ 353

Example 1 ......................................................................................................................353

First Example PlugIn – Exchanging Two Traces on the Grids ................................ 353

Example 2 ......................................................................................................................356

Second Example PlugIn – Log-Log FFT Plot .......................................................... 356

Control Variables in CustomDSO ................................................................................ 358

DFP Filters Overview .................................................................................................... 358

The Need ................................................................................................................. 358

The Solution ............................................................................................................. 358

Enhanced Solutions ................................................................................................. 359

Communications Channel Filters ............................................................................. 361

IIR Filters .................................................................................................................. 362

Filter Setup ....................................................................................................................363

DFP Filter Setup ...................................................................................................... 363

Custom Filters ............................................................................................................... 364

Custom Filter Setup ................................................................................................. 364

Example 1: Creating an FIR Filter Coefficient File Using Mathcad ......................... 364

Example 2: Creating an IIR Filter Coefficient File Using Mathcad .......................... 366

Multirate Filters .............................................................................................................368

Description ............................................................................................................... 368

Specifications ................................................................................................................368

ET-PMT Overview .......................................................................................................... 369

Compatibility ............................................................................................................ 369

Probing ..................................................................................................................... 370

Operation .......................................................................................................................370

Selecting a Standard ................................................................................................370

Test Setup ................................................................................................................ 370

Adding Measurements to a Mask Test .................................................................... 371

Custom Pulse Mask Test Files ................................................................................ 372

Accessing JTA2 ............................................................................................................ 376

Timing Functions .......................................................................................................... 376

Timing Parameters ........................................................................................................ 377

Statistical Tools ........................................................................................................ 377

How JitterTrack Works ................................................................................................. 377

Using “Clock” or “Data” ............................................................................................ 377

When to Use JitterTrack ............................................................................................... 378

JitterTrack or Trend? ................................................................................................378

Clock or Data? ............................................................................................................... 379

Setting Up Jitter Measurements .................................................................................. 380

Jitter Math Setup ...................................................................................................... 380

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Jitter Parameters Setup ........................................................................................... 381

When to Use Persistence Histograms ........................................................................ 382

Setting Up Persistence Histograms ............................................................................ 382

Selecting the Math Function .................................................................................... 382

Setting Up the Histogram ......................................................................................... 383

How to Trace Persistence ............................................................................................ 383

An Innovative Visual and Processing Tool .............................................................. 384

To Set Up Trace Persistence ................................................................................... 384

Choosing a Timing Parameter ..................................................................................... 386

How to Use the Trend Tool ...........................................................................................386

The Basic Idea ......................................................................................................... 386

To Set Up and Configure Trend ............................................................................... 387

Histogram and Trend Calculation ............................................................................... 389

Acquisition Sequence .............................................................................................. 389

Parameter Buffer ...................................................................................................... 389

Parameter Events Capture ...................................................................................... 389

Zoom Traces and Segmented Waveforms .............................................................. 390

SDA Overview ................................................................................................................ 391

Serial Data Analyzer Standard and Optional Capabilities ....................................... 391

Table of Standard Masks Included with Option SDM ................................................ 393

Jitter Wizard ...................................................................................................................393

SDA Basic Setup ..................................................................................................... 395

PLL Setup .......................................................................................................................396

Summary ........................................................................................................................398

Mask Test .......................................................................................................................398

Eye Setup................................................................................................................. 398

Mask Margin ............................................................................................................ 400

Testing ..................................................................................................................... 400

Bit Error Rate .................................................................................................................400

Jitter Setup .....................................................................................................................401

Jitter Measurements ..................................................................................................... 403

Pj Breakdown................................................................................................................. 403

Alternate Jitter Breakdown Methods .......................................................................... 403

Effective Jitter .......................................................................................................... 403

MJSQ Jitter .............................................................................................................. 404

Bathtub Curve................................................................................................................ 405

Jitter Filter ......................................................................................................................406

TIE Histogram ................................................................................................................ 407

DDJ (Synchronous N-Cycle Plot) ................................................................................ 407

DDj (ISI plot) ...................................................................................................................408

Edge-to-Edge Basic Setup ........................................................................................... 409

Edge-Edge Jitter Measurements ................................................................................. 410

Edge-Edge Jitter Measurement Controls ................................................................... 412

Adjust Rj ................................................................................................................... 412

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Async N Cycle Plot .................................................................................................. 412

Edge-Edge Spacing Controls .................................................................................. 412

SDA Function Reference .............................................................................................. 412

AltNcycle ........................................................................................................................413

AltNcycle Control Summary ..................................................................................... 413

Htie to BER ....................................................................................................................414

Jitter Filter Function ..................................................................................................... 416

Slice2Persist ..................................................................................................................416

SDA Theory ....................................................................................................................417

Clock Recovery Theory ................................................................................................ 418

Eye Pattern Theory ....................................................................................................... 419

Eye Violation Locator (ASDA Option) ...................................................................... 420

Eye Pattern Measurements .......................................................................................... 420

Eye Amplitude .......................................................................................................... 420

Eye Height ............................................................................................................... 421

Eye Width ................................................................................................................. 421

Extinction Ratio ........................................................................................................ 421

Eye Crossing ............................................................................................................ 421

Average Power ........................................................................................................ 421

Q Factor or BER ...................................................................................................... 421

eyeBER .................................................................................................................... 422

Jitter Measurement ....................................................................................................... 422

Bit Error Rate and Jitter ........................................................................................... 423

Total Jitter ................................................................................................................ 424

Extrapolating the PDF .............................................................................................. 425

Separating Rj and Dj – Two Methods ...................................................................... 426

Effective Random and Deterministic Jitter ............................................................... 427

Direct Measurement of Deterministic Jitter .............................................................. 427

Comparing Models ........................................................................................................ 428

Bit Error Rate ........................................................................................................... 429

Bit Error Map ............................................................................................................ 429

Vertical Noise Compensation ...................................................................................... 430

Introduction .............................................................................................................. 430

Signal Slew Rate and How Vertical Noise Converts to Jitter ...................................431

The Relative Impact of Noise on Jitter (Quadratic Addition of Noise) ..................... 431

How the Measurement System Noise Is Subtracted from the Jitter Measurement . 431

Q-scale Theory .............................................................................................................. 432

Introduction .............................................................................................................. 432

Interpretation of TIE Histogram – the Distribution of Edge Transition Times vs. Ideal (Expected) Transition

Times ..............................................................................................................................432

Relationship between Histograms and PDF ...............................................................432

Integrating the PDF's .................................................................................................... 433

Extrapolation of the Distribution Tails (Extremes) .................................................... 433

The Error Function erf(x), Inverse Error Function erf-1(x) and Related Functions . 433

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The Relationship between the Inverse Error Function and Total Jitter................... 434

Application of Error Function to Measured Jitter CDF (on Q-scale) ........................435

Automatic Renormalization of the Q-scale ................................................................. 437

Obtaining Deterministic and Random (Gaussian) Components from the Normalized Q-scale Diagram

........................................................................................................................................440

Overview of Multi-Eye Measurement Tools ................................................................ 441

Multi-Eye Setup and Installation .................................................................................. 441

Example Setups ............................................................................................................ 442

FSB Eye Mode Configuration .................................................................................. 442

Front Side Bus (FSB) .................................................................................................... 444

Introduction to FSB .................................................................................................. 444

FSB Theory of Operation ......................................................................................... 444

Transition/Non-Transition Eye Diagram ..................................................................... 445

Gated (Qualified) Eye Diagram .................................................................................... 446

DDA Quick Access Toolbar Button ............................................................................. 448

DDA Specifications ....................................................................................................... 448

Additional DDA Triggers .......................................................................................... 448

Disk Drive Measurement Package (DDM2) ............................................................. 449

Automated DDA Measurements .............................................................................. 449

Advanced DDA Analysis .......................................................................................... 450

Drive Analysis Overview .............................................................................................. 450

Obstacles that Can be Overcome using the DDA’s Channel Analysis .................... 450

What Channel Analysis Provides ............................................................................. 450

Channel Emulation ................................................................................................... 451

With or Without Reference ....................................................................................... 451

Stop On SAM ........................................................................................................... 452

Analog Compare ...................................................................................................... 452

Measure’s Drive Parameters ................................................................................... 453

Setting Up Channel Emulation .....................................................................................453

Drive Analysis Setup ................................................................................................ 453

Channel Setup ......................................................................................................... 454

Setting Up Analog Compare ........................................................................................ 456

Drive Analysis Setup ................................................................................................ 456

Channel Setup ......................................................................................................... 456

Setting Up Noise Analysis ............................................................................................456

Setting Up disk Triggers ...............................................................................................457

Read Gate ................................................................................................................ 457

Sector Pulse ............................................................................................................. 458

Servo Gate ............................................................................................................... 458

Setting Up Zoom ........................................................................................................... 458

Channel Analysis Concepts ......................................................................................... 459

Using the DDA's Equalization Filter ......................................................................... 460

Selecting the Waveform Section to Be Analyzed .................................................... 460

Setting Up to Use Drive Channel Analysis ................................................................. 462



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Which Signals to Provide ......................................................................................... 462

Choosing the Waveform Section to Be Analyzed .................................................... 462

Selecting the Reference Waveform ......................................................................... 463

Time/Div Settings ..................................................................................................... 463

Automatically Shown Traces ................................................................................... 464

Setting Bit Cell Time ................................................................................................ 464

Retraining the Filter ..................................................................................................464

Choosing an Analysis Method ..................................................................................... 464

Analog Compare ...................................................................................................... 464

Channel Emulation without Reference .................................................................... 465

Channel Emulation with Reference ......................................................................... 465

Channel Emulation without Reference ....................................................................... 465

Notes on Using Channel Emulation without Reference ...........................................467

Channel Emulation with Reference ............................................................................. 467

Notes on Using Channel Emulation with Reference ................................................ 469

Using Analog Compare ................................................................................................ 469

Notes on Using Head/Analog Compare ...................................................................470

Local Feature Concepts ............................................................................................... 471

Overview .................................................................................................................. 471

Local Feature Parameters ............................................................................................ 474

Disk Standard Parameters ........................................................................................... 481

Disk PRML Parameters ................................................................................................. 485

Correlation Theory of Operation .............................................................................. 485

Notes ........................................................................................................................ 489

Noise Parameters .......................................................................................................... 490

PRML Channel Emulation ............................................................................................ 492

Why PRML? ............................................................................................................. 492

Principle of Equalization........................................................................................... 493

Resampling ADC ..................................................................................................... 495

Finite Impulse Response (FIR) ................................................................................ 495

Phase Locked Loop (PLL) ....................................................................................... 495

Automatic Gain Control (AGC) ................................................................................ 495

PLL and AGC ........................................................................................................... 496

ML Detector ............................................................................................................. 496

Viterbi Detector & Trellis .......................................................................................... 496

SAM ......................................................................................................................... 496

Encoding .................................................................................................................. 497

Error Correction ....................................................................................................... 497

User Defined Trellis ...................................................................................................... 497

File Format and Language (version 1) .....................................................................497

Loading Your UDT File Remotely ............................................................................ 498

General Rules and Error Messages ........................................................................ 498

Keywords ................................................................................................................. 498

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Example File ............................................................................................................ 503

TF-DSQ Overview .......................................................................................................... 504

Probe Calibration with the TF-DSQ Fixture ............................................................. 504

TF-DSQ Fixture Overview ............................................................................................. 506

Assembling the TF-DSQ fixture ................................................................................... 507

TF-DSQ Scope Connection .......................................................................................... 507

Probe Connection to TF-DSQ ...................................................................................... 508

Probe Calibration Menu ................................................................................................ 510

Accessing the Probe Calibration Menu ....................................................................510

Probe Calibration Menu Description ........................................................................ 510

Basic Probe Calibration ................................................................................................512

Advanced Mode Probe Calibration Menu ................................................................... 512

Gain/Offset Only Calibration .................................................................................... 512

Deskew Only ............................................................................................................ 512

The Advanced Menu ................................................................................................ 513

Rise Time Skew Correction ..................................................................................... 513

Deskew All (or Common Skew) ............................................................................... 513

Common Mode Voltage Selection ........................................................................... 513

Advanced Probe Calibration ........................................................................................ 513

Deskew Theory of Operation ....................................................................................... 514

Deskew Risetime Adjustment Theory ......................................................................... 515

DC Calibration Theory .................................................................................................. 516

Differential and Single-ended Probe Basics .............................................................. 517

WavePro Specifications ............................................................................................... 518

Technical Support ......................................................................................................... 525

Safety Requirements .................................................................................................... 526

Safety Symbols ........................................................................................................ 526

Operating Environment ............................................................................................ 527

Cooling ..................................................................................................................... 527

AC Power Source .................................................................................................... 528

Power and Ground Connections .............................................................................. 528

Standby (Power) Switch and Oscilloscope Operational States ............................... 528

Calibration ................................................................................................................ 529

Cleaning ................................................................................................................... 529

Abnormal Conditions ................................................................................................529

Index ...............................................................................................................................530

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Operator's Manual

Welcome

Thank you for purchasing a LeCroy product. We're certain you'll be pleased with the detailed features so unique to our instruments.

This WavePro 700Zi Operator's Manual provides information in the following manner:

WavePro 700Zi Features

x First, we cover functions like Cable De-Embedding, Sequence Sampling Mode, Spectrum Analyzer,

and Trigger Scan

x Then, we acquaint you with your new instrument in a section named Getting to Know WavePro.

This section contains two sub-sections showing the Hardware new instrument) and Basic Controls screen layout controls) of the instrument.

Comprehensive Core Functions (1000Base-T through Vertical)

The second section covers all the core functions of your instrument.

Compatible Options and Accessories

The next sections cover related Options and Accessories available for your product.

Reference

We've set aside this Reference section to contain contact information for various LeCroy offices, the left this section Here, we cover items like the Specification

Requirements.

(explaining the physical features of your

(demonstrating the relationship between some front panel and

, Technical Support contact information, and Safety

Support

When your product is delivered, verify that all items on the packing list or invoice copy have been shipped to you. Contact your nearest LeCroy customer service center or national distributor if anything is missing or damaged. If there is something missing or damaged, and you do not contact us immediately, we cannot be responsible for replacement. If you have any problems with your product, please refer to the Technical Support contacts located in the Reference section. It also contains the product Specification and Safety Requirements.

The Online help (located on the Help menu on your instrument) contains most of the more detailed information found in this manual.

Thank You

We truly hope these materials provide increased comprehension when using LeCroy's fine products. Sincerely,

David C. Graef

LeCroy Corporation

Vice President and Chief Technology Officer

WP700Zi-OM-E-RevA

WavePro 7Zi

Cable De-Embedding

When making measurements on serial data signals, losses in the cables used in the test setup can reduce the accuracy of your signal (for example, signal amplitude and risetime), as well as introduce Inter-Symbol Interference. These cable effects can dramatically alter your serial data measurements and potentially create mask test violations. The Cable De-Embedding option allows you to quickly specify the characteristics of the cables (typically found on the cable's data sheet) in your test setup and analyze your signal with the effects of the cables removed.

Setting Up Cable De-Embedding

Each of the four Channel menus has its own Cable De-Embedding dialog so that you can individually describe the cable that is being used on each channel. You can specify your cable characteristics by entering either the attenuation table for the cable or two attenuation constants of the loss model for the cable (provided by the cable manufacturer). Then, you must specify the delay and physical length of the cable that you are using in your setup, and you are ready to view your corrected signal. When you remove the effects of the cable, the compensated signal is a more accurate representation of what was actually transmitted.

1. Touch Vertical  Channelx Setup from the menu bar.

2. On the Channelx Setup dialog, touch to place a check mark in the Cable De-Embedding checkbox. A Cable De-Embedding tab will be displayed.

3. Touch the Cable De-Embedding tab.

4. Touch inside the Cable Specified by data entry field and select Attenuation Constants if you want to specify your cable characteristics by entering the two attenuation constants of the loss model for the cable (provided by the cable manufacturer).

Touch inside the Cable Specified by data entry field and select Attenuation Table

if you want to specify your cable characteristics by entering the attenuation table for the cable (provided by the cable manufacturer). Enter an Attenuation value and a Frequency and click Add to add them to the Attenuation Table. If you want to edit a row in the table, highlight the row, change the Attenuation and Frequency and click Change. If you want to delete a row, highlight the row and click Delete.

5. Touch inside the Delay Specified by data entry field to specify the delay. The cable delay can be either Propagation Velocity, Nominal Delay, or a Dielectric Constant.

6. Touch inside the Cable Length data entry field and enter the physical length of the cable in inches.

7. Click Apply to initiate the cable de-embedding for the signal on this channel so that the effects of the cable are removed.

Saving Cable Configurations

You should save cable configurations so that you can easily load them at another time. The current cable configuration will not be preserved after exiting the application unless you save it.

WP700Zi-OM-E-RevA

Operator's Manual

1. On the Cable De-Embedding dialog, touch inside the File Name [DefaultCable] data entry field and enter a file name using the pop-up keyboard.

Touch the Browse button and select a location and file name.

2. Touch the Save button.

Note: You can load previously saved cable configurations by touching the Browse button, locating the file and then clicking Load.

Sequence Sampling Mode – Working with Segments

Using Sequence Mode, you can store up to 15,000 triggered events as "segments" into the oscilloscope's memory. This is ideal when capturing many fast pulses in quick succession or when capturing few events separated by long time periods. The instrument can capture in fine detail complicated sequences of events over large time intervals, while ignoring the uninteresting periods between the events. You can also make time measurements between events on selected segments using the full precision of the acquisition timebase.

Sequence mode offers a number of unique capabilities:

x You can acquire up to four channels simultaneously. x You can minimize dead time between trigger events for consecutive segments. x You can view time stamps for acquisitions. x You can zoom segments or used them as input to math functions. x You can combine sequence mode with an advanced trigger to isolate a rare event, capture all instances

over hours or days, and view/analyze each afterwards.

x You can use Sequence mode in remote operation to take full advantage of the instrument's high data-

transfer capability.

In Sequence mode, the complete waveform consists of a number of fixed-size segments acquired in single-shot mode (see the instrument specifications for the limits). The oscilloscope uses the sequence timebase setting to determine the capture duration of each segment: 10 x time/div. Along with this setting, the oscilloscope uses the desired number of segments, maximum segment length, and total available memory to determine the actual number of samples or segments, and time or points.

Figure 3-1. How the instrument captures segments

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Sequence Display Modes

The instrument gives you a choice of five ways to display your segments:

x Adjacent

x Waterfall (cascaded)

x Mosaic (tiled)

WavePro 7Zi

x Overlay

x Perspective

Setting Up Sequence Mode

When setting up Sequence Mode, you define the number of fixed-size segments acquired in single-shot mode (see the instrument specifications for the limits). The oscilloscope uses the sequence timebase setting to determine the capture duration of each segment. Along with this setting, the oscilloscope uses the number of segments, maximum segment length, and total available memory to determine the actual number of samples or segments, and time or points.

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Figure 3-2. Setting up Sequence Mode (Adjacent)

1. Touch Timebase  Horizontal Setup on the menu bar.

2. Under Sampling Mode, touch the Sequence mode button

3. Click the Sequence tab.

4. Under Acquisition Settings, touch inside the Num Segments data entry field and enter the number of segments you want to display, using the slider bar at the bottom of the window. Click the keypad button

on the slider bar to enter a value using the pop-up numeric keypad.

Note: The number of segments you choose to display (80 maximum) can be less than the total number of segments in the waveform. For example, in the pop-up images above, the number of display segments is 10, but the total number of segments entered in the timebase dialog's Num Segments field is 100.

5. Touch the Enable Timeout checkbox.

6. Touch inside the Timeout data entry field and enter a timeout value, using the slider bar at the bottom of

the window. Click the keypad button keypad.

Note: Use the sequence mode timeout to automatically interrupt the sequence acquisition if the timeout value is exceeded without a valid trigger. The timeout period accounts for instances when a Num Segments miscount occurs for some reason and the scope waits indefinitely for an unforthcoming segment. During that time, no oscilloscope functions are accessible. By means of a timeout value, however, the acquisition will be completed, the waveform displayed, and control of the oscilloscope returned to the user after the timeout has elapsed.

on the slider bar to enter a value using the pop-up numeric

5. Under Display Settings, touch inside the Display mode field, and select a sequence mode display from the pop-up menu.

6. Touch the S

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INGLE trigger front panel button.

WavePro 7Zi

Note: Once a single acquisition has started, you can interrupt the acquisition at any time by

pressing the SINGLE front panel button a second time or by pressing the STOP front panel button. In this case, the segments already acquired will be retained in memory.

Zooming Segments in Sequence Mode

You can zoom individual segments easily using the QUICKZOOM front panel button. When you zoom, the zoom traces default to Segment 1. Channel descriptors indicate the total number of segments acquired. Zoom descriptors indicate [Seg #] and #Segments in the Zoom. You can scroll through the segments using Z panel position knob.

OOM front

Figure 3-3. Sample Zoom of Segments in Sequence Mode

1. Touch the front panel Quickzoom button .

2. Turn the Z

3. To vary the degree of zoom, touch the newly created Zx trace label. The setup dialog for the zoom (Z1 to Z4) opens. It shows the current horizontal and vertical zoom factors.

4. If you want to increase or decrease your horizontal or vertical zoom in small increments, touch the Var.

checkbox to enable variable zooming. Now with each touch of the zoom control buttons , the degree of magnification will change by a small increment.

If you want to zoom in or out in large standard increments with each touch of the zoom control buttons, leave the Var. checkbox unchecked.

OOM front panel position knob to scroll through the segments.

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Operator's Manual

If you want to set exact horizontal or vertical zoom factors, touch inside the Horizontal Scale/div data entry field and enter a time-per-div value, using the pop-up numeric keypad. Then touch inside the Vertical Scale/div field and enter a voltage value.

Displaying an Individual Segment

1. Touch Math  Math Setup on the menu bar.

2. Touch a function tab (F1 to Fx - The number of available math traces depends on the software options loaded on the oscilloscope. Refer to the specifications for details).

3. Touch inside the Operator1 field and select the Segment button

4. In the dialog on the right, touch the Select tab.

5. Touch inside the First Selected data entry field and use the slider bat at the bottom of the window to select

the first segment you want to display. Click the keypad button using the pop-up numeric keypad.

Note: In Persistence mode, the segments are automatically overlaid one on top of the other in the display. In nonPersistence mode, they appear separately on the grid.

from the pop-up menu.

on the slider bar to enter a value

Viewing Time Stamps

You can view time stamps for each segment.

1. Touch Timebase  Acquisition Status on the menu bar.

Touch Vertical  Channel Status on the menu bar.

2. Touch the Trigger Time tab.

3. Under Show Status For, touch the Time button.

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Figure 3-4. View Segment Time Stamps

WavePro 7Zi

4. Touch inside the Select Segment field and enter a segment number, using the pop-up keypad or touch the arrow buttons to scroll through segment times.

Spectrum Analyzer

The Spectrum Analyzer and Advance FFT option in the WavePro 700Zi series oscilloscopes will help you use the Fast Fourier Transform (FFT) in your measurements. If you are familiar with RF spectrum analyzers, you can start using the FFT with little or no concern about the details of setting up an FFT. The Spectrum Analyzer controls are the same as you would find on an RF spectrum analyzer. You can set the span, center frequency and resolution bandwidth and the oscilloscope automatically configures the acquisition and FFT controls to obtain the desired spectrum view.

Figure 3-5. Sample dialog and display for the Spectrum Analyzer

Running the Spectrum Analyzer

You can run the Spectrum Analyzer by touching Analysis  Spectrum Analyzer from the menu bar. When you run the Spectrum Analyzer, you set up controls in the Spectrum Analyzer dialog from left to right, including a Source, Center Frequency, Frequency Span, and Resolution Bandwidth.

NumberDescription

Enable the Spectrum Analyzer and choose the Source Trace.

Center Span is similar to adjusting the position of the FFT zoom trace. You enter the Center Frequency

and the Frequency Span. Frequency Span is similar to adjusting the zoom scale of the FFT. This does not change the sample rate or memory. The Spectrum Analyzer reports the maximum frequency that can

be observed.

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LeCroy WavePro 7 Zi series, DDA 7 Zi series, SDA 7 Zi series, WavePro DDA 7 Zi series, WavePro SDA 7 Zi series Operator's Manual

Specifications and Main Features

Frequently Asked Questions

User Manual