Agilent Technologies MSO7012B, DSO7014B, MSO7032B, MSO7034B, DSO7032B User Manual

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Agilent InfiniiVision 7000B Series Oscilloscopes

User’s Guide



Notices

CAUTION

WARNING

any form or by any means (including electronic storage and retrieval or translation into a foreign language) without prior agreement and written consent from Agilent Technologies, Inc. as governed by United States and international copyright laws.

Manual Part Number

54695-97025

Edition

Third Edition, June 2010 Printed in Malaysia Agilent Technologies, Inc.

1900 Garden of the Gods Rd. Colorado Springs, CO 80907 USA

Software Revision

This guide was written for version 6.1 of the Agilent InfiniiVision 7000B Series Oscilloscopes software.

Trademark Acknowledgments

Java is a U.S. trademark of Sun Microsystems, Inc.

Sun, Sun Microsystems, and the Sun Logo are trademarks or registered trademarks of Sun Microsystems, Inc. in the U.S. and other countries.

Warranty

The material contained in this document is provided “as is,” and is subject to being changed, without notice, in future editions. Further, to the maximum extent permitted by applicable law, Agilent disclaims all warranties, either express or implied, with regard to this manual and any information contained herein, including but not limited to the implied warranties of merchantability and fitness for a particular purpose. Agilent shall not be liable for errors or for incidental or consequential damages in connection with the furnishing, use, or performance of this document or of any information contained herein. Should Agilent and the user have a separate written agreement with warranty terms covering the material in this document that conflict with these terms, the warranty terms in the separate agreement shall control.

Technology Licenses

The hardware and/or software described in this document are furnished under a license and may be used or copied only in accordance with the terms of such license.

Restricted Rights Legend

U.S. Government Restricted Rights. Software and technical data rights granted to the federal government include only those rights customarily provided to end user customers. Agilent provides this customary commercial license in Software and technical data pursuant to FAR 12.211 (Technical Data) and 12.212 (Computer Software) and, for the Department of Defense, DFARS

252.227-7015 (Technical Data - Commercial Items) and DFARS 227.7202-3 (Rights in Commercial Computer Software or Computer Software Documentation).

Safety Notices

A CAUTION notice denotes a hazard. It calls attention to an operating procedure, practice, or the like that, if not correctly performed or adhered to, could result in damage to the product or loss of important data. Do not proceed beyond a CAUTION notice until the indicated conditions are fully understood and met.

A WARNING notice denotes a hazard. It calls attention to an operating procedure, practice, or the like that, if not correctly performed or adhered to, could result in personal injury or death. Do not proceed beyond a WARNING notice until the indicated conditions are fully understood and met.

InfiniiVision 7000B Series Oscilloscopes User’s Guide

InfiniiVision 7000B Series Oscilloscopes—At a Glance

The Agilent InfiniiVision 7000B Series oscilloscopes deliver powerful features and high performance:

• 100 MHz, 350 MHz, 500 MHz, and 1 GHz bandwidth models.

•Up to 4GSa/s sample rate.

• 12.1 inch XGA display.

• Powerful triggering including analog HDTV and USB. Options for CAN, FlexRay, I SPI, and UART/RS232.

• USB and LAN ports make printing, saving and sharing data easy.

• 2- channel and 4- channel Digital Storage Oscilloscope (DSO) models.

• 2+16- channel and 4+16- channel Mixed Signal Oscilloscope (MSO) models.

• An MSO lets you debug your mixed-signal designs using up to four analog signals and 16 tightly correlated digital signals simultaneously.

C, I2S, LIN, MIL- STD 1553,

InfiniiVision 7000B Series Oscilloscopes User’s Guide 3

• You can easily upgrade an InfiniiVision 7000B Series oscilloscope from a DSO to an MSO and/or add features such as Segmented Memory and Mask Test.

• A Quick Help system is built into the oscilloscope. Press and hold any key to display Quick Help. Complete instructions for using the quick help system are given on

page 49.

Agilent InfiniiVision oscilloscopes feature MegaZoom III technology:

• Most responsive deep memory.

• High definition color display.

• Largest display in its class (12.1 inches).

• Fastest waveform update rates, uncompromised.

For more information about InfiniiVision oscilloscopes, see:

www.agilent.com/find/scope

Table 1 7000B Series Model Numbers, Bandwidths, and Sampling Rates

Bandwidth 100 MHz 350 MHz 500 MHz 1 GHz

Maximum Sample Rate 2 GSa/s 2 GSa/s 4 GSa/s 4 GSa/s

2-Channel + 16 Logic Channels MSO MSO7012B MSO7032B MSO7052B

4-Channel + 16 Logic Channels MSO MSO7014B MSO7034B MSO7054B MSO7104B

2-Channel DSO DSO7012B DSO7032B DSO7052B

4-Channel DSO DSO7014B DSO7034B DSO7054B DSO7104B

4 InfiniiVision 7000B Series Oscilloscopes User’s Guide

In This Guide

This guide shows you how to use the InfiniiVision 7000B Series oscilloscopes. It contains these chapters:

1Getting Started

2 Probing the Device Under Test

3 Displaying Waveforms

4Triggering

5 Measurements and Math Functions

6 Saving, Recalling, and Printing

7 Acquisition Modes

8Web Interface

9 Serial Decode/Lister

10 CAN/LIN Triggering and Serial Decode

11 I2C/SPI Triggering and Serial Decode

12 I2S Triggering and Serial Decode

13 FlexRay Triggering and Serial Decode

14 MIL-STD 1553 Triggering and Serial Decode

15 UART/RS232 Triggering and Serial Decode

16 Analyzing Data

17 Digital Channels

InfiniiVision 7000B Series Oscilloscopes User’s Guide 5

18 Oscilloscope Utility Settings

NOTE

19 Reference

Index

Digital Channels

Because all of the oscilloscopes in the Agilent InfiniiVision Series have analog channels, the analog channel topics in this book apply to all instruments. Whenever a topic discusses the digital channels, that information applies only to Mixed-Signal Oscilloscope (MSO) models or DSO models that have been upgraded to an MSO.

Abbreviated instructions for pressing a series of keys and softkeys

Instructions for pressing a series of keys are written in an abbreviated manner. Instructions for pressing Key1, then pressing Softkey2, then pressing Softkey3 are abbreviated as follows:

Press [Key1] > Softkey2 > Softkey3. The keys may be a front panel [Key] or a Softkey. Softkeys are the six keys located directly

below the oscilloscope display.

6 InfiniiVision 7000B Series Oscilloscopes User’s Guide

Contents

Figures 21

Ta bl e s 23

1 Getting Started 25

Inspect the Package Contents 26

Tilt the Oscilloscope for Easy Viewing 28

Power-On the Oscilloscope 29

Power Requirements 29 Ventilation Requirements 29 To mount the oscilloscope in a rack 29 To power-on the oscilloscope 30

Recall the Default Oscilloscope Setup 31

Input a Waveform and AutoScale 32

How AutoScale works 33

Become Familiar with Oscilloscope Controls and Connectors 34

Front Panel Controls and Connectors (4-Channel) 35 Front Panel Controls and Connectors (2-Channel, differences only) 36 Front Panel Control and Connector Descriptions 37

Do not connect a host computer to the oscilloscope’s USB host port 37

Rear Panel (4-Channel) 42 Rear Panel (2-Channel) 43 Rear Panel Connector Descriptions 44 Front Panel Overlays for Different Languages 45 Using the Oscilloscope Softkey Menus 46

InfiniiVision 7000B Series Oscilloscopes User’s Guide 7

Contents

Become Familiar with the Osciilloscope Display 48

Access the Built-In Quick Help 49

To view Qui ck Hel p 49 To select the Quick Help language 50 To get the latest Quick Help 50

2 Probing the Device Under Test 51

Analog Input Impedance (50 Ohm or 1 MOhm) 52

AutoProbe Interface 52

Passive Probes 53

Active Probes 53

Connect the Probes to the Oscilloscope 55

Maximum input voltage at analog inputs 55

Do not float the oscilloscope chassis 55

Compensating Passive Probes 56

Calibrating Probes 57

Manually Setting the Probe Attenuation Factor 59

Digital Probes 60

8 InfiniiVision 7000B Series Oscilloscopes User’s Guide

3 Displaying Waveforms 61

Using the Horizontal Controls 62

To adjust the horizontal (time/div) scale 63 To adjust the horizontal delay (position) 63 Panning and Zooming Single or Stopped Acquisitions 64 To change the horizontal time mode (Normal, XY, or Roll) 65 To display the zoomed time base 71 To change the horizontal scale knob’s coarse/fine adjustment setting 73 To position the time reference (left, center, right) 74 To navigate the time base 74

Using the Vertical Controls 77

To turn waveforms on or off (channel or math) 78 To adjust the vertical scale 78 To adjust the vertical position 78 To specify channel coupling 79 To specify channel input impedance 79 To specify bandwidth limiting 80 To change the vertical scale knob’s coarse/fine adjustment setting 81 To invert a waveform 81

Contents

Setting Analog Channel Probe Options 82

To specify the channel units 82 To specify the probe attenuation 82 To specify the probe skew 83 To calibrate a probe 83

Changing the Display Settings 84

To adjust waveform intensity 84 To set or clear infinite persistence 85 To clear the display 86 To adjust the grid brightness 86 To display waveforms as vectors or dots 87 To freeze the display 87

InfiniiVision 7000B Series Oscilloscopes User’s Guide 9

Contents

Using Labels 89

To turn the label display on or off 89 To assign a predefined label to a channel 90 To define a new label 91 To load a list of labels from a text file you create 92 To reset the label library to the factory default 93

4Triggering95

Triggering - General Information 97

Trigger Mode and Coupling Menu 98

Auto and Normal Trigger modes 99

Choosing Auto Trigger Mode or Normal Trigger Mode 99 Auto Mode 100 Normal Mode 100

Trigger Level Adjustment 102

Trigger Coupling 103

Trigger Noise Rejection 104

HF Reject 105 LF Reject 105 Noise Rejection 106

Trigger Holdoff 107

Trigger Holdoff Operating Hints 107 To set holdoff 107

External Trigger Input 109

2-Channel Oscilloscope External Trigger Input 109

Maximum voltage at 2-channel oscilloscope external trigger input 110

4-Channel Oscilloscope External Trigger Input 111

Maximum voltage at 4-channel oscilloscope external trigger input 111

10 InfiniiVision 7000B Series Oscilloscopes User’s Guide

Trigger Types 112

Duration Trigger 114

< qualifier time set softkey 115 > qualifier time set softkey 116

Edge Trigger 117

Glitch or Narrow Pulse Capture 119

Using Peak Detect Mode to Find a Glitch 121

Nth Edge Burst Trigger 123

Pattern Trigger 125

Hex Bus Pattern Trigger 126

Pulse Width Trigger 128

< qualifier time set softkey 130 > qualifier time set softkey 130

Contents

Sequence Trigger 131

Define the “Find” Stage 132 Define the “Trigger on” Stage 134 Define the Optional “Reset on” Stage 136 Adjust the Trigger Level 137

TV Trigger 138

TV Triggering Examples 142 To trigger on a specific line of video 142 To trigger on all sync pulses 144 To trigger on a specific field of the video signal 145 To trigger on all fields of the video signal 146 To trigger on odd or even fields 147

USB Trigger 150

5 Measurements and Math Functions 153

List of Automatic Measurements 154

InfiniiVision 7000B Series Oscilloscopes User’s Guide 11

Contents

Making Automatic Measurements 156

Measurement Statistics 157 Measurement Thresholds 160

Measurement Definitions 162

Time Measurements 162 Delay and Phase Measurements 166 Voltage Measurements 169 Overshoot and Preshoot Measurements 174

Cursor Measurements 177

To make cursor measurements 178 Cursor Examples 180

Math Functions 183

To use w ave fo rm m ath 183 To perform a math function upon an arithmetic operation 184 Math scale and offset 184 Units 185

Multiply 187

Add or Subtract 189

Differentiate 191

Integrate 193

Square Root 195

FFT Measurement 197

FFT Operation 199

12 InfiniiVision 7000B Series Oscilloscopes User’s Guide

6 Saving, Recalling, and Printing 205

Saving and Recalling Data 206

Contents

Selecting a Destination for Your Saved Data Selecting a File Name 208 Saving Waveform Trace and Oscilloscope Setup 209 Display Image and Waveform Data File Formats 210 Choosing Save Settings 211 To save a waveform and/or setup to a USB mass storage device 215 To save a waveform and/or setup to the oscilloscope’s internal memory 216 To recall waveform trace and/or oscilloscope setup 216 File Explorer 217

Printing Screens 220

To print the oscilloscope’s display 220 Options 221 Palette 221

7 Acquisition Modes 223

Starting, Stopping, and Single Acquisitions (Run Control) 224

To start and stop an acquisition 224 To make a single acquisition 225

206

Acquisition Modes 227

At Slower Sweep Speeds 227 Selecting the Acquisition mode 227 Normal Mode 227 Peak Detect Mode 228 High Resolution Mode 228 Averaging Mode 229 Realtime Sampling Option 232

Segmented Memory 234

Using segmented memory 234

InfiniiVision 7000B Series Oscilloscopes User’s Guide 13

Contents

8Web Interface239

Setting up the Oscilloscope’s LAN Connection 241

To establish a LAN connection 241 Stand-alone (Point-to-Point) Connection to a PC 242

Accessing the Web Interface 244

Browser Web Control 245

Remote Front Panel 245 Remote Programming 247 Remote Programming with Agilent IO Libraries 249

Get Image 250

Identification Function 251

Instrument Utilities 252

Setting a Password 253

9 Serial Decode/Lister 255

Serial Decode 256

Lister 257

Searching Lister Data 259

10 CAN/LIN Triggering and Serial Decode 261

Setup for CAN Signals 262

CAN Triggering 264

CAN Serial Decode 266

Interpreting CAN Decode 267 CAN Totalizer 268 Interpreting CAN Lister Data 269 Searching for CAN Data in the Lister 270

Setup for LIN Signals 272

14 InfiniiVision 7000B Series Oscilloscopes User’s Guide

LIN Triggering 274

LIN Serial Decode 276

Interpreting LIN Decode 277 Interpreting LIN Lister Data 278 Searching for LIN Data in the Lister 279

Contents

11 I

C/SPI Triggering and Serial Decode 281

Setup for I

C Signals 282

I2C Triggering 284

C Serial Decode 288

Interpreting I Interpreting I Searching for I

Setup for SPI Signals 292

SPI Triggering 295

SPI Serial Decode 297

Interpreting SPI Decode 298 Interpreting SPI Lister Data 299 Searching for SPI Data in the Lister 300

12 I

S Triggering and Serial Decode 301

C Decode 289

C Lister Data 290

C Data in the Lister 291

Setup for I

S Triggering 306

S Serial Decode 309

Interpreting I Interpreting I Searching for I

13 FlexRay Triggering and Serial Decode 313

Setup for FlexRay Signals 314

InfiniiVision 7000B Series Oscilloscopes User’s Guide 15

S Signals 302

S Decode 310

S Lister Data 311

S Data in the Lister 312

Contents

FlexRay Triggering 315

Triggering on FlexRay Frames 315 Triggering on FlexRay Errors 316 Triggering on FlexRay Events 317

FlexRay Serial Decode 318

Interpreting FlexRay Frame Decode 319 FlexRay Totalizer 320 Interpreting FlexRay Lister Data 321 Searching for FlexRay Data in the Lister 322

14 MIL-STD 1553 Triggering and Serial Decode 323

Probing MIL-STD 1553 Signals 324

Setup for MIL-STD 1553 Signals 325

MIL-STD 1553 Triggering 326

MIL-STD 1553 Serial Decode 327

Interpreting MIL-STD 1553 Decode 328 Viewing MIL-STD 1553 Data in the Lister 329 Searching for MIL-STD 1553 Data in the Lister 330

15 UART/RS232 Triggering and Serial Decode 333

Setup for UART/RS232 Signals 334

UART/RS232 Triggering 335

UART/RS232 Serial Decode 338

Interpreting UART/RS232 Decode 339 UART/RS232 Totalizer 340 Interpreting UART/RS232 Lister Data 341 Searching for UART/RS232 Data in the Lister 342

16 InfiniiVision 7000B Series Oscilloscopes User’s Guide

16 Analyzing Data 343

Performing Mask Tests 344

To create a mask from a “golden” waveform (Automask) 344 Setup Options 346 Mask Test Trigger Output 348 Mask Statistics 348 To manually modify a mask file 350 Building a Mask File 353

Enabling Presision Measurements and Math 357

17 Digital Channels 359

To connect the digital probes to the device under test 360

Probe cable for digital channels 360

Contents

Acquiring waveforms using the digital channels 363

To display digital channels using AutoScale 364

Example 364

Interpreting the digital waveform display 366

To change the displayed size of the digital channels 367

To switch a single channel on or off 367

To switch all digital channels on or off 367

To switch groups of channels on or off 368

To change the logic threshold for digital channels 368

To reposition a digital channel 369

To display digital channels as a bus 369

InfiniiVision 7000B Series Oscilloscopes User’s Guide 17

Contents

Digital channel signal fidelity: Probe impedance and grounding 374

Input Impedance 374 Probe Grounding 376 Best Probing Practices 378

To replace digital probe leads 379

18 Oscilloscope Utility Settings 381

Configuring the [Quick Action] Key 382

Setting Oscilloscope Preferences 383

To choose "expand about" center or ground 383 To disable/enable antialiasing 383 To set up the screen saver 384 To set AutoScale preferences 385 To disable/enable transparent backgrounds 386 To load the default label library 386 To specify the measurement window for Zoom mode 386

Setting Rear Panel Options 388

To set the reference signal mode 388

Maximum input voltage at 10 MHz REF connector 389

To set the trigger out source 391

Setting the Oscilloscope’s Clock 392

Entering Licenses and Displaying License Information 393

To enter licenses 393 To display license information 393 Licensed Options Available 393 Other Options Available 395 Upgrading to an MSO 396 Secure Environment Mode Option 396

18 InfiniiVision 7000B Series Oscilloscopes User’s Guide

Performing Service Tasks 397

To display oscilloscope information 397 To perform user calibration 397 To display the user calibration status 400 To perform self test 401 To clean the oscilloscope 401 To check warranty and extended services status 402 To return the instrument 402 To contact Agilent 403

19 Reference 405

Specifications and Characteristics 406

Accessories Available 407

Software and Firmware Updates 410

Contents

Measurement Category 411

Measurement Category 411 Measurement Category Definitions 411 Transient Withstand Capability 412

Maximum input voltage at analog inputs and 2-channel external trigger input

412

Maximum input voltage at digital channels 412

Environmental Conditions 413

Binary Data (.bin) Format 414

Binary Data in MATLAB 415 Binary Header Format 415 Example Program for Reading Binary Data 418 Examples of Binary Files 418

CSV and ASCII XY files 422

InfiniiVision 7000B Series Oscilloscopes User’s Guide 19

Contents

Acknowledgements 423

Index 425

20 InfiniiVision 7000B Series Oscilloscopes User’s Guide

Figures

Figure 1. Interpreting the oscilloscope display 48 Figure 2. Example of centering a signal on the display 67 Figure 3. Signal centered on the display 67 Figure 4. Cursors set on displayed signal 68 Figure 5. Cursors set to center of signal 69 Figure 6. Signals are 90 out of phase 70 Figure 7. Signals are in phase 71 Figure 8. Amplitude Modulation Shown at 100% Intensity 84 Figure 9. Amplitude Modulation Shown at 40% Intensity 85 Figure 10. 15 ns Narrow Pulse, 20 ms/div, Normal Mode 120 Figure 11. 15 ns Narrow Pulse, 20 ms/div, Peak Detect Mode 121 Figure 12. Sequence Trigger Flowchart 131 Figure 13. Example: Triggering on Line 136 143 Figure 14. Triggering on All Lines 144 Figure 15. Triggering on Field 1 145 Figure 16. Triggering on All Fields 146 Figure 17. Triggering on Color Field 1 Alternating with Color Field 3 148 Figure 18. Using TV Holdoff to Synchronize to Color Field 1 or 3 (Field 1

mode) 149 Figure 19. Isolating an event for Frequency measurement 164 Figure 20. Isolating area for Top measurement 174 Figure 21. Automatic Overshoot measurement 176 Figure 22. Cursors used to measure pulse widths other than middle threshold

points 180 Figure 23. Cursors measure frequency of pulse ringing 181 Figure 24. Cursors track Zoom sweep 181 Figure 25. Measuring pulse width with cursors 182 Figure 26. Moving the cursors together to check pulse width variations 182

InfiniiVision 7000B Series Oscilloscopes User’s Guide 21

Figures

Figure 27. Example of Multiply 188 Figure 28. Example of Subtract 190 Figure 29. Example of Differentiate Function 192 Figure 30. Integrate and Signal Offset 194 Figure 31. Example of Figure 32. Aliasing 198 Figure 33. Random noise on the displayed waveform 231 Figure 34. 128 Averages used to reduce random noise 231 Figure 35. AutoScale of digital channels 0 to 3 (MSO models only) 365 Figure 36. DC and Low-Frequency Probe Equivalent Circuit 375 Figure 37. High-Frequency Probe Equivalent Circuit 375 Figure 38. Impedance versus Frequency for Both Probe Circuit Models 376 Figure 39. Common Mode Input Voltage Model 377 Figure 40. User Calibration cable for 2-channel oscilloscope 399 Figure 41. User Calibration cable for 4-channel oscilloscope 400

 (Square Root) 196

22 InfiniiVision 7000B Series Oscilloscopes User’s Guide

Ta bl e s

Table 1. 7000B Series Model Numbers, Bandwidths, and Sampling Rates 4 Table 1. Default Configuration Settings 31 Table 2. Passive Probes 53 Table 3. Active Probes 54 Table 4. Half-field holdoff time 149 Table 5. Saving Oscilloscope Data 206 Table 6. Recommended Signal Mapping 215 Table 7. InfiniiVision Series Oscilloscope Bandwidths, Maximum Sample Rates,and

Sample Periods 228 Table 8. Digital Probe Replacement Parts 379 Table 9. Licensed Options Available 394 Table 10. Calibration Option 395 Table 11. Accessories Available for 7000B Series Oscilloscopes 407

InfiniiVision 7000B Series Oscilloscopes User’s Guide 23

Tables

24 InfiniiVision 7000B Series Oscilloscopes User’s Guide

Agilent InfiniiVision 7000B Series Oscilloscopes User’s Guide

1 Getting Started

Inspect the Package Contents 26 Tilt the Oscilloscope for Easy Viewing 28 Power-On the Oscilloscope 29 Recall the Default Oscilloscope Setup 31 Input a Waveform and AutoScale 32 Become Familiar with Oscilloscope Controls and Connectors 34 Become Familiar with the Osciilloscope Display 48 Access the Built-In Quick Help 49

This chapter describes the steps you take when using the oscilloscope for the first time.

See Also • “Setting Oscilloscope Preferences” on page 383.

 25

1Getting Started

Inspect the Package Contents

✔ Inspect the shipping container for damage.

If your shipping container appears to be damaged, keep the shipping container or cushioning material until you have inspected the contents of the shipment for completeness and have checked the oscilloscope mechanically and electrically.

✔ Verify that you received the following items and any optional

accessories you may have ordered:

• InfiniiVision Oscilloscope

• Front- panel cover

• Power cord (country of origin determines specific type)

• Oscilloscope probes:

• Two probes for 2-channel models

• Four probes for 4- channel models

• CD- ROM containing:

• User’s Guide

• Service Guide

• Programmer’s Guide

• Automation- Ready Software CD- ROM

• Accessory pouch

• Digital probe kit P/N 54620- 68701 (MSO Models only)

26 InfiniiVision 7000B Series Oscilloscopes User’s Guide

Getting Started 1

Help

Horiz

Navigate

Trigger

PrintDisplay

Save Recall

Acquire

Mode

Coupling

Utility

Quick

Action

Auto

Scale

Default

Setup

Clear

Display

Back

Run Stop

Single

Label

Cursors

Meas

Math

Serial

Digital

Analyze

Level

Intensity

Horizontal

Run Control

Trigger

Waveform

Measure

Vertical

File

Tool s

Cursors

Push to Select

Push to

Zero

Push for 50%

Push to Select

Push for Fine

Push to

Zero

Push to

Zero

Push for

Fine

Push for

Fine

Push for 50%

Push to

Zero

Push for

Fine

50 50 50

XY Z

2341

CAT

300 V RMS

14pF

1 M

5 V RMS

4 GSa/s

1GHz

MSO7104B

Mixed Signal Oscilloscope

InfiniiVision

InfiniiVision 7000B Series oscilloscope

Front-panel cover and accessory pouch (not shown)

Power cord (Based on country of origin)

Documentation CD

Automation-Ready CD

10073C or 1165A probes (Qty 2 or 4)

Digital Probe Kit* (MSO models only)

*Digital Probe Kit contains: 54620-61801 16-channel cable (qyt 1) 5959-9334 2-inch probe ground leads (qyt 5) 5090-4833 Grabber (qyt 20)

Digital probe replacement parts are listed in the "Digital Channels" chapter.

See Also • “Accessories Available” on page 407.

InfiniiVision 7000B Series Oscilloscopes User’s Guide 27

1Getting Started

Tilt the Oscilloscope for Easy Viewing

The oscilloscope can be tilted up for easier viewing. 1 Tilt the oscilloscope forward. Rotate the foot down and toward the rear

of the oscilloscope. The foot will lock into place.

2 Repeat for the other foot. 3 Rock the oscilloscope back so that it rests securely on its feet.

To retract the feet: 1 Tilt the oscilloscope forward. Press the foot release button and rotate

the foot up and toward the front of the oscilloscope.

2 Repeat for the other foot.

28 InfiniiVision 7000B Series Oscilloscopes User’s Guide

Power-On the Oscilloscope

Power Requirements

Line voltage, frequency, and power:

• ~Line 100- 120 Vac, 50/60/400 Hz

• 100- 240 Vac, 50/60 Hz

• 120 W max

Ventilation Requirements

The air intake and exhaust areas must be free from obstructions. Unrestricted air flow is required for proper cooling. Always ensure that the air intake and exhaust areas are free from obstructions.

Getting Started 1

The fan draws air in from the sides of the oscilloscope and pushes it out behind the oscilloscope.

When using the oscilloscope in a bench- top setting, provide at least 2” clearance at the sides and 4" (100 mm) clearance above and behind the oscilloscope for proper cooling.

To mount the oscilloscope in a rack

The InfiniiVision 7000B series oscilloscopes can be mounted in an Electronic Industries Association (EIA) standard 19- inch (487- mm) rack cabinet.

To mount the oscilloscope in a rack, purchase and install the N2732A rack mount kit. Instructions are included in the kit. For details search for N2732A at www.agilent.com.

InfiniiVision 7000B Series Oscilloscopes User’s Guide 29

1Getting Started

WARNING

To power-on the oscilloscope

1 Connect the power cord to the rear of the oscilloscope, then to a

Always use a grounded power cord. Do not defeat the power cord ground.

2 Press the power switch.

suitable AC voltage source. Route the power cord so the oscilloscope’s feet and legs do not pinch the cord.

The oscilloscope automatically adjusts for input line voltages in the range 100 to 240 VAC. The line cord provided is matched to the country of origin.

The power switch is located on the lower left corner of the front panel. The oscilloscope will perform a self- test and will be operational in a few seconds.

30 InfiniiVision 7000B Series Oscilloscopes User’s Guide

Recall the Default Oscilloscope Setup

To recall the default oscilloscope setup:

• Press [Default Setup].

The default setup restores the oscilloscope’s default settings. This places the oscilloscope in a known operating condition. The major default settings are:

Table 1 Default Configuration Settings

Horizontal Normal mode, 100 s/div scale, 0 s delay, center time reference.

Vertical (Analog) Channel 1 on, 5 V/div scale, DC coupling, 0 V position, 1 M

impedance, probe factor to 1.0 if an AutoProbe probe is not connected to the channel.

Tr ig g er Edge trigger, Auto sweep mode, 0 V level, channel 1 source, DC

coupling, rising edge slope, 60 ns holdoff time.

Getting Started 1

Display Vectors on, 33% grid intensity, infinite persistence off.

Other Acquire mode normal,

off.

Labels All custom labels that you have created in the Label Library are

preserved (not erased), but all channel labels will be set to their original names.

[Run/Stop] to Run, cursors and measurements

InfiniiVision 7000B Series Oscilloscopes User’s Guide 31

1Getting Started

Input a Waveform and AutoScale

Use [AutoScale] to automatically configure the oscilloscope to best display the input signals.

1 Connect an oscilloscope probe from channel 1 to the Probe Comp

terminal on the front panel.

2 Connect the probe’s ground lead to the ground terminal (next to the

Probe Comp terminal). 3 Press [AutoScale]. 4 If you want to return to the oscilloscope settings that existed before,

press Undo AutoScale. 5 If you want to change the channels autoscaled or preserve the

acquisition mode during autoscale, press Channels or Acq Mode.

Theses are the same softkeys that appear in the AutoScale Preferences

Menu. See “To set AutoScale preferences” on page 385. 6 You should see a waveform on the oscilloscope’s display similar to this:

If you see the waveform, but the square wave is not shaped correctly as shown above, perform the procedure “Compensating Passive Probes” on page 56.

32 InfiniiVision 7000B Series Oscilloscopes User’s Guide

Getting Started 1

If you do not see the waveform, ensure your power source is adequate, the oscilloscope is powered-on, the power cord is firmly inserted into the oscilloscope receptacle, and the probe is connected securely to the front- panel oscilloscope channel input BNC and to the Probe Comp terminal.

How AutoScale works

AutoScale analyzes any waveforms present at each channel and at the external trigger input. This includes the digital channels on MSO models.

AutoScale finds, turns on, and scales any channel with a repetitive waveform that has a frequency of at least 50 Hz, a duty cycle greater than

0.5%, and an amplitude of at least 10 mV peak- to- peak. Any channels that do not meet these requirements are turned off.

The trigger source is selected by looking for the first valid waveform starting with external trigger, then continuing with the highest number analog channel down to the lowest number analog channel, and finally (if the oscilloscope is an MSO) the highest number digital channel.

During AutoScale, the delay is set to 0.0 seconds, the sweep speed setting is a function of the input signal (about 2 periods of the triggered signal on the screen), and the triggering mode is set to Edge. Vectors remain in the state they were before the AutoScale.

InfiniiVision 7000B Series Oscilloscopes User’s Guide 33

1Getting Started

Become Familiar with Oscilloscope Controls and Connectors

On the front panel, “key” refers to any key (button) you can press. “Softkey” specifically refers to the six keys that are directly below the display. The legend for these keys is directly above them, on the display. Their functions change as you navigate through the oscilloscope’s menus.

In this manual, instructions for pressing a series of keys are written in an abbreviated manner. Pressing the [Help] key, then the Language softkey, then the Help softkey is abbreviated as follows:

Press [Help] > Language > Help.

Press and hold any key or softkey to view its built-in Quick Help.

When the Entry knob symbol appears on a softkey, you can use the Entry knob, to select values.

For easy one-handed operation of the 7000B Series oscilloscopes, the Entry knob can be pushed as well as rotated. Rotating the knob moves through selectable items, and pushing the knob makes the selection.

34 InfiniiVision 7000B Series Oscilloscopes User’s Guide

Getting Started 1

3. Probe

Compensation

Terminals

21.

Display

7. Vertical Position

Control

25.

Softkeys

15.

Measure

Keys

6. [Label] Key

24. Entry Knob

18.

[Default Setup]

Key

19.

Horizontal

Controls

1. Power Switch

23. Intensity Control

2. USB Host

Port

11. File Keys

20.

Trigger

Controls

17. Run

Controls

9. Channel On/Off

Key

12. Math Controls

4. Channel Input BNC Connector

5. AutoProbe Interface

14. Serial Decode

Controls

8. Vertical Sensitivity

10. Tools Controls

22.

Waveform

Keys

26.

Back/up

13. Digital Channel

Controls

16.

[AutoScale]

Key

Front Panel Controls and Connectors (4-Channel)

For the following figure, refer to numbered descriptions in “Front Panel

Control and Connector Descriptions” on page 37.

InfiniiVision

MSO7104B

Mixed Signal Oscilloscope

1GHz

4 GSa/s

Push for

Fine

Trigger

Acquire

Push to

Select

Horizontal

Horiz

Navigate

Trigger

Level

Push for 50%

Waveform

Intensity

Push for 50%

Push for

Fine

Label

Push to

Mode

Cursors

Coupling

Meas

Save

Recall

Clear

Utility

Display

Help

Vertical

Run Control

Run

Zero

Measure

File

Tools

Single

Stop

Default

Setup

Push for Fine

Cursors

Serial

Push to Select

Digital

PrintDisplay

Math

Quick Action

Analyze

Push to

Push for

Fine

Auto Scale

Zero

Push to

Zero

Back

XY Z

50 50 50

2341

1 M

14pF

300 V RMS

CAT

5 V RMS

Push to

Zero

InfiniiVision 7000B Series Oscilloscopes User’s Guide 35

1Getting Started

Help

Horiz

Navigate

Trigger

PrintDisplay

Save

Recall

Acquire

Mode

Coupling

Utility

Quick Action

Auto Scale

Default

Setup

Clear

Display

Back

Run

Stop

Single

Label

Cursors

Meas

Math

Serial

Digital

Analyze

Level

Intensity

Horizontal

Run Control

Trigger

Waveform

Measure

File

Tools

Cursors

Vertical

Push to Select

Push to

Zero

Push for 50%

Push to Select

Push to

Zero

Push for 50%

Push to

Zero

Push for Fine

Push for

Fine

Push for

Fine

50 50

Ext Trig

CAT

300 V RMS

~ ~

14pF

1 M

5 V RMS

2 GSa/s

500 MHz

MSO7052B

Mixed Signal Oscilloscope

InfiniiVision

External Trigger Input

Front Panel Controls and Connectors (2-Channel, differences only)

The differences between the front panel of the 4-channel oscilloscopes and the 2- channel oscilloscopes are:

• The 2- channel oscilloscope has two sets of channel controls

• The 2- channel oscilloscope’s external trigger input is on the front panel

instead of the rear panel. Some trigger features differ. See “External

36 InfiniiVision 7000B Series Oscilloscopes User’s Guide

Trigger Input” on page 109.

Getting Started 1

CAUTION

Front Panel Control and Connector Descriptions

1. Power Switch Press once to switch power on; press again to switch

power off. See page 29.

2. USB Host Port This port is for connecting USB mass storage devices or

printers to the oscilloscope.

Connect a USB compliant mass storage device (flash drive, disk drive, etc.) to store or recall oscilloscope setup files or waveforms.

To print, connect a USB compliant printer. For more information about printing see “To print the oscilloscope’s display” on page 220.

You can also use the USB port to update the oscilloscope’s system software when updates are available.

You do not need to take special precautions before removing the USB mass storage device from the oscilloscope (you do not need to “eject” it). Simply unplug the USB mass storage device from the oscilloscope when the file operation is complete.

For more information about saving to a USB mass storage device see

“Saving and Recalling Data” on page 206.

Do not connect a host computer to the oscilloscope’s USB host port

Use the device port. A host computer sees the oscilloscope as a device, so connect the host computer to the oscilloscope’s device port (on the rear panel). See “Web

Interface” on page 239.

3. Probe Compensation Terminals Use the signal at this terminal to match a

probe’s input capacitance to the oscilloscope channel to which it is connected. See page 56.

4. Channel Input BNC Connector Attach the oscilloscope probe or BNC cable

to the BNC connector. This is the channel’s input connector.

InfiniiVision 7000B Series Oscilloscopes User’s Guide 37

1Getting Started

5. AutoProbe Interface When you connect a probe to the oscilloscope, the

AutoProbe Interface attempts to determine the type of probe and set its parameters in the Probe Menu accordingly. See “AutoProbe Interface” on page 52.

6. [Label] Key Press this key to access the Label Menu, which lets you

enter labels to identify each trace on the oscilloscope display. See “Using

Labels” on page 89.

7. Vertical Position Control Use this knob to change the channel’s vertical

position on the display. There is one Vertical Position control for each channel. See “Using the Vertical Controls” on page 77.

8. Vertical Sensitivity There is one knob marked for each channel. Use

these knobs to change the vertical sensitivity (gain) of each channel. See

“Using the Vertical Controls” on page 77.

9. Channel On/Off Key Use this key to switch the channel on or off, or to

access the channel’s menu in the softkeys. There is one Channel On/Off key for each channel. See “Using the Vertical Controls” on page 77.

10. Tools Controls Press this key to access the Utility Menu, which lets you

configure the oscilloscope’s I/O settings, use the file explorer, set preferences, access the service menu, and choose other options.

11. File Keys Press the [Save/Recall] key to save or recall a waveform or

setup. The [Print] key opens the Print Configuration Menu so you can print the displayed waveforms. See “Saving and Recalling Data” on page 206 and “Printing Screens” on page 220.

12. Math Controls The [Math] key provides access to add, subtract,

multiply, differentiate, integrate, FFT (Fast Fourier Transform) and square root functions. See “Measurements and Math Functions” on page 153.

13. Digital Channel Controls These controls switch the digital channels on

and off, and can be used to select a digital channel for repositioning on the display.

Press the [Digital] key to turn on the digital channels (the [Digital] key will illuminate as well as the arrow to the left).

38 InfiniiVision 7000B Series Oscilloscopes User’s Guide

Getting Started 1

When the arrow to the left of the [Digital] key is illuminated, the upper knob selects (and highlights in red) individual digital channels, and the lower knob positions the selected digital channel.

If a trace is repositioned over an existing trace the indicator at the left edge of the trace will change from D two digit channel number from 0 to 15) to D channels are overlaid.

You can rotate the upper knob to select an overlaid channel, then rotate the lower knob to position it just as you would any other channel.

For more information on digital channels see Chapter 17, “Digital Channels,” starting on page 359.

designation (where nn is a one or

. The “*” indicates that two

14. Serial Decode Controls These [Serial] key is used to enable serial

decode. The upper and lower knob are not used with serial decode.

For more information on serial decode, see Chapter 9, “Serial Decode/Lister,” starting on page 255.

15. Measure Keys Press the [Cursors] key to turn on cursors that you can

use for making measurements. Press the [Meas] key to access a set of predefined measurements. See Chapter 5, “Measurements and Math Functions,” starting on page 153.

16. [AutoScale] Key When you press the [AutoScale] key. the oscilloscope

will quickly determine which channels have activity, and it will turn these channels on and scale them to display the input signals. See “Input a

Waveform and AutoScale” on page 32.

17. Run Controls Press [Run/Stop] to make the oscilloscope begin looking

for a trigger. The [Run/Stop] key will illuminate in green. If the trigger mode is set to “Normal,” the display will not update until a trigger is found. If the trigger mode is set to “Auto,” the oscilloscope looks for a trigger, and if none is found, it will automatically trigger, and the display will immediately show the input signals. In this case, the Auto indicator at the top of the display will change to Auto? and the background will flash, indicating that the oscilloscope is forcing triggers.

Press [Run/Stop] again to stop acquiring data. The key will illuminate in red. Now you can pan across and zoom- in on the acquired data.

InfiniiVision 7000B Series Oscilloscopes User’s Guide 39

1Getting Started

Press [Single] to make a single acquisition of data. The key will illuminate in yellow until the oscilloscope triggers. See “To start and stop an

acquisition” on page 224.

18. [Default Setup] Key Press this key to return to the factory default

configuration (details on “Performing Service Tasks” on page 397).

19. Horizontal Controls

Horizontal Sweep Speed Control

that is marked to adjust the sweep speed. The symbols under the knob indicate that this control has the effect of spreading out or zooming in on the waveform using the horizontal scale. The horizontal sweep speed control changes the time per horizontal division on the display. For more information see “Using the Horizontal Controls” on page 62.

Turn the knob in the Horizontal section

Horizontal Position Control Turn the knob marked to pan through the

waveform data horizontally. You can see the captured waveform before the trigger (turn the knob clockwise) or after the trigger (turn the knob counterclockwise). If you pan through the waveform when the oscilloscope is stopped (not in Run mode) then you are looking at the waveform data from the last acquisition taken. See “Using the Horizontal Controls” on page 62.

Horizontal [Zoom] Key Press the zoom key to access the menu where

you can split the oscilloscope display into Normal and Zoom sections, and where you can select XY and Roll modes. You can also select horizontal time/division vernier and select the trigger time reference point on this menu. See “Using the Horizontal Controls” on page 62.

Horizontal [Search] Key When serial decode is enabled, you can use the

[Search] key to find and place marks on rows in the Lister. See “Searching

Lister Data” on page 259.

Horizontal [Navigate] Key and Controls Press this key to navigate through

captured data, marks in the serial decode Lister, or segmented memory acquisitions. See “To navigate the time base” on page 74.

20. Trigger Controls These controls determine how the oscilloscope triggers

to capture data. See Chapter 4, “Triggering,” starting on page 95.

40 InfiniiVision 7000B Series Oscilloscopes User’s Guide

Getting Started 1

Back

21. Display The display shows captured waveforms using a different color

for each channel. For more information about display modes see

Chapter 3, “Displaying Waveforms,” starting on page 61. Signal detail is

displayed using 256 levels of intensity. For more information about viewing signal detail see “To adjust waveform intensity” on page 84.

22. Waveform Keys The [Acquire] key lets you set the oscilloscope to

acquire in Normal, Peak Detect, Averaging, or High Resolution modes (see

“Acquisition Modes” on page 227), and lets you turn Realtime sampling off

or on (see page 232). The [Display] key lets you access the menu where you can select infinite persistence (see page 85), switch vectors on or off (see page 87), and adjust the display grid (graticule) intensity (see

page 86).

23. Intensity Control Rotate clockwise to increase analog waveform

intensity; counterclockwise to decrease. You can vary the intensity control to bring out signal detail, much like an analog oscilloscope. Digital channel waveform intensity is not adjustable. More details about using the Intensity control to view signal detail are on page 84.

24. Entry Knob The entry knob is used to select items from menus and to

change values. Its function changes based upon which menu is displayed. Note that the curved arrow symbol above the entry knob illuminates whenever the entry knob can be used to select a value. Rotate and push the entry knob to select among the choices that are shown on the softkeys. More information about the Entry knob is on page 34.

25. Softkeys The functions of these keys change based upon the menus

shown on the display directly above the keys.

26. Back/up The back/up key moves up in the softkey menu hierarchy.

At the top of the hierarchy, the back/up key turns the menus off, and

Back

oscilloscope information is shown instead.

InfiniiVision 7000B Series Oscilloscopes User’s Guide 41

1Getting Started

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1. External Trigger

Input

2. Trigger Output

3. 10 MHz Reference Connector

9. LAN Port

8. USB Device

Port

(For

remote

control)

7. USB

Host Port

(For saving

and

data.)

6. XGA Video

Output

5. Digital Input

Connector

4. Calibration Protect

Switch

11. Power Connector

10. Kensington Lock

Rear Panel (4-Channel)

Click the text for the item’s description and operation information. Printed manual: refer to numbered descriptions on the following pages.

42 InfiniiVision 7000B Series Oscilloscopes User’s Guide

Getting Started 1

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External trigger input

is on the front panel

Rear Panel (2-Channel)

The 2- channel model rear panel is the same as the 4- channel model rear panel shown on page 42, except on 2- channel models, the external trigger input is on the front panel instead of the rear panel.

InfiniiVision 7000B Series Oscilloscopes User’s Guide 43

1Getting Started

Rear Panel Connector Descriptions

1. External Trigger Input See “External Trigger Input” on page 109 for an

explanation of this feature.

2. Trigger Output See “Trigger Types” on page 112.

3. 10 MHz Reference Connector See “To set the reference signal mode” on

page 388.

4. Calibration Protect Switch See “To perform user calibration” on page 397.

5. Digital Input Connector Connect the digital probe cable to this connector

(MSO models only).

6. XGA Video Output A standard XGA video output connector is provided

on the rear panel.

You can connect an external monitor to provide a larger display or to provide a display at a viewing position away from the oscilloscope.

The oscilloscope’s built- in display remains on even when an external display is connected. The video output connector is always active.

For optimal video quality and performance, we recommend you use a shielded video cable with ferrite cores.

7. USB Host Port This port functions identically to the USB host port on

the front panel. USB Host Port is used for saving data from the oscilloscope and loading software updates. See also page 37.

8. USB Device Port This port is for connecting the oscilloscope to a host

PC. You can issue remote commands from a host PC to the oscilloscope via the USB device port. See “Remote Programming with Agilent IO

Libraries” on page 249.

9. LAN Port You can communicate with the oscilloscope and use the

Remote Front Panel feature using the LAN port. See “Web Interface” on page 239 and “Accessing the Web Interface” on page 244.

44 InfiniiVision 7000B Series Oscilloscopes User’s Guide

Getting Started 1

Removal Ta b

10. Kensington Lock This is where you can attach a Kensington lock for

securing the instrument.

11. Power Connector Attach the power cord here.

Front Panel Overlays for Different Languages

A front panel overlay which labels the controls is available in Simplified Chinese, Traditional Chinese, and Japanese. The overlay is included when the localization option is chosen at time of purchase.

Remove the protective backing to expose the adhesive, align the label with the top and left edge of the front panel, and press the overlay into place.

To remove the label, carefully pull it away using the tab at the lower right corner.

InfiniiVision 7000B Series Oscilloscopes User’s Guide 45

1Getting Started

The overlays can also be ordered separately at www.parts.agilent.com using the following part numbers:

Part number Description

54695-94323 2CH Overlay - Simplified Chinese

54695-94324 4CH Overlay - Simplified Chinese

54695-94325 2CH Overlay - Traditional Chinese

54695-94326 4CH Overlay - Traditional Chinese

54695-94327 2CH Overlay - Japanese

54695-94328 4CH Overlay - Japanese

Using the Oscilloscope Softkey Menus

Softkeys are the six keys directly below the display. The are called softkeys because software determines the function assigned to each key in any given menu.

The following graphic symbols appear in the oscilloscope’s softkey menus. The softkey menus appear at the bottom of the display, just above the six softkeys.

Rotate the Entry knob to adjust the parameter. The Entry knob is located on the front panel. The symbol below the knob is illuminated when this control is active.

Rotate the Entry knob to select an item. Push the Entry knob or press the softkey to activate the item or close the menu.

Press the softkey to display a pop- up menu. Press the softkey or rotate and push the Entry knob to make an item active.

Option is selected but not active.

Option is selected and active.

Feature is on. Press the softkey again to turn the feature off.

46 InfiniiVision 7000B Series Oscilloscopes User’s Guide

Getting Started 1

Back

Feature is off. Press the softkey again to turn the feature on.

Press the softkey to view the menu. Press the back/up key to return to the previous menu.

A dot on a softkey indicates that the action specified in the dialog will be performed when the Entry knob is pushed.

InfiniiVision 7000B Series Oscilloscopes User’s Guide 47

1Getting Started

Analog channel sensitivity

Delay time

Trigger level or digital threshold

Trigger source

Trigger type

Run/Stop status

Sweep speed

Analog channels and ground levels

Digital channels

Measurement line

Softkeys

Trigger point, time reference

Cursor markers defining measurement

Status line

Trigger Level

Measurement statistics

Become Familiar with the Osciilloscope Display

The oscilloscope display contains acquired waveforms, setup information, measurement results, and the softkey definitions.

Figure 1 Interpreting the oscilloscope display

Status line The top line of the display contains vertical, horizontal, and

trigger setup information.

Display area The display area contains the waveform acquisitions, channel

identifiers, and analog trigger and ground level indicators. Each analog channel’s information appears in a different color.

Measurement line This line normally contains automatic measurement and

cursor results, but can also display advanced trigger setup data and menu information.

Softkeys The softkeys let you set up additional parameters for the

selected mode or menu.

48 InfiniiVision 7000B Series Oscilloscopes User’s Guide

Access the Built-In Quick Help

Press and Hold Front Panel Key or Softkey (or Right-Click Softkey when using Web browser control)

Quick Help Message

To view Quick Help

1 Press and hold the key or softkey for which you would like to view

help.

Getting Started 1

By default, Quick Help remains on the screen until another key is pressed or a knob is turned. You can set Quick Help to close when you release the key. Press the [Help] key, then press the Language softkey, then press the

Help softkey and select either Close on Release or Remain on Screen ([Help] > Language > Help).

InfiniiVision 7000B Series Oscilloscopes User’s Guide 49

1Getting Started

To select the Quick Help language

To choose a Quick Help language in the oscilloscope:

1 Press [Help], then press the Language softkey. 2 Repeatedly press and release the Language softkey or rotate the Entry

When Quick Help is set to one of the following languages, the Graphical User Interface (GUI) is displayed in the language chosen.

• Simplified Chinese

• Traditional Chinese

• Japanese

• Korean

To get the latest Quick Help

knob until the desired language is selected.

Updated Quick Help content may be dowloaded and installed on the oscilloscope just like firmware updates. To download new Quick Help and GUI language files:

1 Direct your web browser to: www.agilent.com/find/7000sw 2 Select Quick Help Language Support and follow the directions.

50 InfiniiVision 7000B Series Oscilloscopes User’s Guide

Agilent InfiniiVision 7000B Series Oscilloscopes User’s Guide

2 Probing the Device Under Test

Analog Input Impedance (50 Ohm or 1 MOhm) 52 AutoProbe Interface 52 Passive Probes 53 Active Probes 53 Connect the Probes to the Oscilloscope 55 Compensating Passive Probes 56 Calibrating Probes 57 Manually Setting the Probe Attenuation Factor 59 Digital Probes 60

This chapter explains how to connect the oscilloscope to your device under test (DUT) using probes.

 51

2 Probing the Device Under Test

Analog Input Impedance (50 Ohm or 1 MOhm)

The input impedance of most InfiniiVision oscilloscope analog channels can be set to either 50 or 1 M . The 50  mode matches 50  cables and many active probes commonly used in making high frequency measurements. This impedance matching gives you the most accurate measurements because reflections are minimized along the signal path. The 1 M impedance is commonly required for use with most passive probes.

If you would like to connect to the oscilloscope using 50 ohm BNC cables instead, select the 50 ohm input impedance mode.

For instructions on setting the input impedance, see “To specify channel

input impedance” on page 79.

For more information on probing, visit

www.agilent.com/find/scope_probes

Information about selecting a probe can be found in document number

5989- 6162EN: Agilent Oscilloscope Probes and Accessories Selection

Guide, available at www.agilent.com.

AutoProbe Interface

The AutoProbe interface uses a series of contacts directly below the channel’s BNC connector to transfer information between the oscilloscope and the probe. When you connect a compatible probe to the oscilloscope, the AutoProbe interface determines the type of probe and sets the oscilloscope’s parameters (units, offset, attenuation, coupling, and impedance) accordingly.

52 InfiniiVision 7000B Series Oscilloscopes User’s Guide

Passive Probes

All InfiniiVision oscilloscopes recognize passive probes such as the 10073C, 10074C and 1165A. These probes have a pin on their connector that connects to the ring around the oscilloscope’s BNC connector. Therefore, the oscilloscope will automatically set the attenuation factor for recognized Agilent passive probes.

Passive probes that do not have a pin that connects to the ring around the BNC connector will not be recognized by the oscilloscope, and you must set the probe attenuation factor manually. See page 59.

The following passive probes can be used with the InfiniiVision oscilloscopes. Any combination of passive probes can be used.

Table 2 Passive Probes

Passive Probes Quantity Supported

Probing the Device Under Test 2

1165A Passive probe, 10:1, 600 MHz, 1.5 m 4

10070C Passive probe, 1:1 20 MHz, 1.5 m 4

10073C Passive probe, 10:1, 500 MHz, 1.5 m 4

10074C Passive probe, 10:1, 150 MHz, 1.5 m 4

10076A Passive probe, 100:1, 4 kV, 250 MHz 4

N2863A Passive probe, 10:1, 300 MHz, 1.2 m 4

Active Probes

Most Agilent active probes are compatible with the AutoProbe interface. Active probes that do not have their own external power supply require substantial power from the AutoProbe interface. “Quantity Supported” indicates the maximum number of each type of active probe that can be connected to the oscilloscope. If too much current is drawn from the AutoProbe interface, an error message will be displayed, indicating that you must momentarily disconnect all probes to reset the AutoProbe interface, then connect only the supported quantity of active probes.

InfiniiVision 7000B Series Oscilloscopes User’s Guide 53

2 Probing the Device Under Test

Table 3 Active Probes

Active Probes Quantity Supported

1130A 1.5 GHz InfiniiMax amplifier, requires one or more InfiniiMax probe heads: E2675A, E2668A, E2669A

1131A InfiniiMax 3.5 GHz Probe 2

1132A InfiniiMax 5 GHz Probe 2

1134A InfiniiMax 7 GHz Probe 2

1141A Differential Probe, 200 MHz, with 1142A power supply

1144A Active Probe, 800 MHz, with 1142A power supply 4

1145A 2-Channel, 750 MHz Active Probe, with 1142A power supply

1147A 50 MHz/15A AC/DC Current Probe 2

1156A 1.5 GHz Active Probe 4

1157A 2.5 GHz Active Probe 4

1158A 4 GHz Active Probe 4

N2772A Differential Probe, 20 MHz, with N2773A power supply

N2774A (obsolete, replaced by N2782A) with N2775A power supply

N2782A 50 MHz/30Arms AC/DC Current Probe, with N2779A power supply

54 InfiniiVision 7000B Series Oscilloscopes User’s Guide

Connect the Probes to the Oscilloscope

CAUTION

1 Connect the oscilloscope probe to an oscilloscope channel BNC

connector.

2 Connect the probe’s retractable hook tip to the point of interest on the

circuit or device under test. Be sure to connect the probe ground lead to a ground point on the circuit.

Maximum input voltage at analog inputs

CAT I 300 Vrms, 400 Vpk; transient overvoltage 1.6 kVpk CAT II 100 Vrms, 400 Vpk 50 input: 5 Vrms

Input protection is enabled in 50 mode and the 50 load will disconnect if greater than 5 Vrms is detected. However the inputs could still be damaged, depending on the time constant of the signal. The 50 input protection only functions when the oscilloscope is powered on.

Probing the Device Under Test 2

1 M ohm input, 100 MHz models: For steady-state sinusoidal waveforms derate at 20 dB/decade above 200 kHz to a minimum of 10 Vpk

1 M ohm input, 350 MHz, 500 MHz, 1 GHz models: For steady-state sinusoidal waveforms derate at 20 dB/decade above 57 kHz to a minimum of 5 Vpk

With N2863A 10:1 probe: CAT I 600 V, CAT II 300 V (DC + peak AC) With 10073C or 10074C 10:1 probe: CAT I 500 Vpk, CAT II 400 Vpk

Do not float the oscilloscope chassis

Defeating the ground connection and “floating” the oscilloscope chassis will probably result in inaccurate measurements and may also cause equipment damage. The probe ground lead is connected to the oscilloscope chassis and the ground wire in the power cord. If you need to measure between two live points, use a differential probe with sufficient dynamic range.

InfiniiVision 7000B Series Oscilloscopes User’s Guide 55

2 Probing the Device Under Test

WARNING

comp.cdr

Perfectly compensated

Over compensated

Under compensated

Do not negate the protective action of the ground connection to the oscilloscope. The oscilloscope must remain grounded through its power cord. Defeating the ground creates an electric shock hazard.

Compensating Passive Probes

Each oscilloscope passive probe must be compensated to match the input characteristics of the oscilloscope channel to which it is connected. A poorly compensated probe can introduce significant measurement errors.

1 Perform the procedure “Input a Waveform and AutoScale” on page 32. 2 Use a nonmetallic tool (supplied with the probe) to adjust the trimmer

capacitor on the probe for the flattest pulse possible. The trimmer capacitor is located on the probe BNC connector.

3 Connect probes to all other oscilloscope channels (channel 2 of a

2- channel oscilloscope, or channels 2, 3, and 4 of a 4-channel oscilloscope). Repeat the procedure for each channel.

56 InfiniiVision 7000B Series Oscilloscopes User’s Guide

Calibrating Probes

NOTE

Some probes, such as the 10073C, 10074C, and 1165A passive probes, do not require calibration. When one of these probes is connected, the Calibrate Probe softkey in the Channel Probe Menu is grayed- out (displayed in faint text).

However, for certain active probes, such as InfiniiMax probes, the oscilloscope can accurately calibrate its analog channels for the probe. When you connect a probe that can be calibrated, the Calibrate Probe softkey in the Channel Probe Menu becomes active. To calibrate one of these probes:

1 First, plug your probe into one of the oscilloscope channels.

This could be, for example, an InfiniiMax probe amplifier/probe head with attenuators attached.

2 Connect the probe to the Probe Comp terminal, and the probe ground

to the Probe Comp ground terminal.

Probing the Device Under Test 2

When calibrating a differential probe, connect the positive lead to the Probe Comp terminal and the negative lead to the Probe Comp ground terminal. You may need to connect an alligator clip to the ground lug to allow a differential probe to span between the Probe Comp test point and ground. A good ground connection ensures the most accurate probe calibration.

3 Press the Channel on/off key to turn the channel on (if the channel is

off).

4 In the Channel Menu, press the Probe softkey. 5 In the Channel Probe Menu, the second softkey from the left is for

specifying your probe head (and attenuation). Repeatedly press this softkey until the probe head selection matches the attenuator you are using.

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2 Probing the Device Under Test

The choices are:

• 10:1 single- ended browser (no attenuator)

• 10:1 differential browser (no attenuator)

• 10:1 (+6 dB Atten) single- ended browser

• 10:1 (+6 dB Atten) differential browser

• 10:1 (+12 dB Atten) single- ended browser

• 10:1 (+12 dB Atten) differential browser

• 10:1 (+20 dB Atten) single- ended browser

• 10:1 (+20 dB Atten) differential browser

6 Press the Calibrate Probe softkey and follow the instructions on the

display.

For more information on InfiniiMax probes and accessories, see the probe’s User’s Guide.

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Probing the Device Under Test 2

Units and Attenuation Factor

Manually Setting the Probe Attenuation Factor

The probe attenuation factor must be set properly for accurate measurement results.

If you connect a probe that is not automatically identified by the oscilloscope, you can manually set the attenuation factor as follows:

1 Press the channel key. 2 Press the Probe softkey until you have selected how you want to specify

the attenuation factor, choosing either Ratio or Decibels.

3 Turn the Entry knob to set the attenuation factor for the connected

probe.

When measuring voltage values, the attenuation factor can be set from

0.1:1 to 1000:1 in a 1- 2- 5 sequence.

When measuring current values with a current probe, the attenuation factor can be set from 10 V/A to 0.001 V/A.

When specifying the attenuation factor in decibels, you can select values from -20 dB to 60 dB.

If Amps is chosen as the units and a manual attenuation factor is chosen, then the units as well as the attenuation factor are displayed above the Probe softkey.

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2 Probing the Device Under Test

Digital Probes

Please see “To connect the digital probes to the device under test” on page 360 for information about digital probing.

60 InfiniiVision 7000B Series Oscilloscopes User’s Guide

Agilent InfiniiVision 7000B Series Oscilloscopes User’s Guide

3 Displaying Waveforms

Using the Horizontal Controls 62 Using the Vertical Controls 77 Setting Analog Channel Probe Options 82 Changing the Display Settings 84 Using Labels 89

This chapter describes using the horizontal controls, the vertical controls, the [Display] key and menu options, and labels when displaying waveforms.

The easiest way to adjust the horizontal and vertical scale and display waveforms is to connect the probes to the signals and press [AutoScale]. See “Input a Waveform and AutoScale” on page 32.

See Also • “Triggering” on page 95 for topics related to stabilizing waveforms on

the display.

• “Acquisition Modes” on page 223 for topics related to detecting peak

values of waveforms, averaging waveforms, and capturing high- resolution waveforms.

• “Printing Screens” on page 220.

• “Setting Oscilloscope Preferences” on page 383.

 61

3 Displaying Waveforms

Normal sweep mode

Zoom sweep mode

Fine control

Trigger level or threshold

Trigger source

Delay time

XY or Roll mode

Time reference

Sweep speed

Trigger point

Time reference

Sample rate

Using the Horizontal Controls

The horizontal controls include:

• The horizontal scale and position knobs.

• The [Horiz] key for accessing the Horizontal Menu.

• The zoom key for quickly enabling/disabling the split- screen zoom

display.

• The [Search] key for marking events in the serial decode Lister. See

“Searching Lister Data” on page 259.

• The [Navigate] keys for navigating time, marked events in the serial

decode Lister, and segmented memory acquisitions.

The following figure shows the Horizontal Menu which appears after pressing the [Horiz] key.

The Horizontal Menu lets you select the time mode (Normal, XY, or Roll), enable Zoom, set the time base fine control (vernier), and specify the time reference.

The current sample rate is displayed above the Fine and Time Ref softkeys.

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Displaying Waveforms 3

To adjust the horizontal (time/div) scale

1 Turn the large horizontal scale (sweep speed) knob marked to

change the horizontal time/div setting. Notice how the time/div information in the status line changes.

The  symbol at the top of the display indicates the time reference point.

Note that the horizontal scale knob has a different purpose in the Zoom display. See “To display the zoomed time base” on page 71.

The horizontal scale knob works (in the Normal time mode) while acquisitions are running or when they are stopped. When running, adjusting the horizontal scale knob changes the sample rate. When stopped, adjusting the horizontal scale knob lets you zoom into acquired data. See “Panning and Zooming Single or Stopped Acquisitions” on page 64.

To adjust the horizontal delay (position)

1 Turn the horizontal delay (position) knob ( ).

Notice that the delay value is displayed in the status line.

The delay knob moves the normal sweep horizontally, and it pauses at

0.00 s, mimicking a mechanical detent.

Changing the delay time moves the sweep horizontally and indicates how far the trigger point (solid inverted triangle) is from the time reference point (hollow inverted triangle ). These reference points are indicated along the top of the display grid.

The previous figure shows the trigger point with the delay time set to 400 s. The delay time number tells you how far the time reference point is located from the trigger point. When delay time is set to zero, the delay time indicator overlays the time reference indicator.

All events displayed left of the trigger point happened before the trigger occurred. These events are called pre- trigger information, and they show events that led up to the trigger point.

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3 Displaying Waveforms

Everything to the right of the trigger point is called post- trigger information. The amount of delay range (pre- trigger and post- trigger information) available depends on the sweep speed selected and memory depth.

Note that the horizontal position knob has a different purpose in the Zoom display. See “To display the zoomed time base” on page 71.

The horizontal position knob works (in the Normal time mode) while acquisitions are running or when they are stopped. When running, adjusting the horizontal scale knob changes the sample rate. When stopped, adjusting the horizontal scale knob lets you zoom into acquired data. See “Panning and Zooming Single or Stopped Acquisitions” on page 64.

Panning and Zooming Single or Stopped Acquisitions

When the oscilloscope is stopped, use the horizontal scale and position knobs to pan and zoom your waveform. The stopped display may contain several acquisitions worth of information, but only the last acquisition is available for pan and zoom.

The ability to pan (move horizontally) and scale (expand or compress horizontally) an acquired waveform is important because of the additional insight it can reveal about the captured waveform. This additional insight is often gained from seeing the waveform at different levels of abstraction. You may want to view both the big picture and the specific little picture details.

The ability to examine waveform detail after the waveform has been acquired is a benefit generally associated with digital oscilloscopes. Often this is simply the ability to freeze the display for the purpose of measuring with cursors or printing the screen. Some digital oscilloscopes go one step further by including the ability to further examine the signal details after acquiring them by panning through the waveform and changing the horizontal scale.

There is no limit imposed on the scaling ratio between the sweep speed used to acquire the data and the sweep speed used to view the data. There is, however, a useful limit. This useful limit is somewhat a function of the signal you are analyzing.

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Displaying Waveforms 3

NOTE

In normal display mode, with vectors (connect- the- dots) off, you can scale in to the point where there are no samples on the screen. Obviously, this is far beyond the useful limit. Likewise, with vectors on, you can see the linear interpolation between the points, but again, this is of very limited value.

Zooming into stopped acquisitions

The screen will still contain a relatively good display if you zoom-in horizontally by a factor of 1000 and zoom-in vertically by a factor of 10 to display the information from where it was acquired. Remember that you can only make automatic measurements on displayed data.

To change the horizontal time mode (Normal, XY, or Roll)

1 Press [Horiz]. 2 In the Horizontal Menu, press Time Mode; then, select:

• Normal — the normal viewing mode for the oscilloscope.

In the Normal time mode, signal events occurring before the trigger are plotted to the left of the trigger point (t) and signal events after the trigger plotted to the right of the trigger point.

• XY — XY mode changes the display from a volts-versus- time display

to a volts-versus-volts display. The time base is turned off. Channel 1 amplitude is plotted on the X- axis and Channel 2 amplitude is plotted on the Y-axis.

You can use XY mode to compare frequency and phase relationships between two signals. XY mode can also be used with transducers to display strain versus displacement, flow versus pressure, volts versus current, or voltage versus frequency.

Use the cursors to make measurements on XY mode waveforms. For more information about using XY mode for measurements, refer

to “XY Time Mode” on page 66.

• Roll — causes the waveform to move slowly across the screen from

right to left. It only operates on time base settings of 500 ms/div and slower. If the current time base setting is faster than the 500 ms/div limit, it will be set to 500 ms/div when Roll mode is entered.

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3 Displaying Waveforms

XY Time Mode

The XY time mode converts the oscilloscope from a volts- versus- time display to a volts-versus- volts display using two input channels. Channel 1 is the X- axis input, channel 2 is the Y- axis input. You can use various transducers so the display could show strain versus displacement, flow versus pressure, volts versus current, or voltage versus frequency. This exercise shows a common use of the XY display mode by measuring the phase difference between two signals of the same frequency with the Lissajous method.

In Roll mode there is no trigger. The fixed reference point on the screen is the right edge of the screen and refers to the current moment in time. Events that have occurred are scrolled to the left of the reference point. Since there is no trigger, no pre- trigger information is available.

If you would like to pause the display in Roll mode press the [Single] key. To clear the display and restart an acquisition in Roll mode, press the [Single] key again.

Use Roll mode on low-frequency waveforms to yield a display much like a strip chart recorder. It allows the waveform to roll across the display.

1 Connect a sine wave signal to channel 1, and a sine wave signal of the

same frequency but out of phase to channel 2.

2 Press the [AutoScale] key, press the [Horiz] key; then, press Time Mode

and select “XY”.

3 Center the signal on the display with the channel 1 and 2 position ( )

knobs. Use the channel 1 and 2 volts/div knobs and the channel 1 and 2 Fine softkeys to expand the signal for convenient viewing.

The phase difference angle () can be calculated using the following formula (assuming the amplitude is the same on both channels):

66 InfiniiVision 7000B Series Oscilloscopes User’s Guide

Figure 2 Example of centering a signal on the display

sin

A B

---

C D

--- -

Signal must be centered in “X”

Displaying Waveforms 3

Figure 3 Signal centered on the display

4 Press the [Cursors] key. 5 Set the Y2 cursor to the top of the signal, and set Y1 to the bottom of

the signal.

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3 Displaying Waveforms

Note the Y value at the bottom of the display. In this example, we are using the Y cursors, but you could have used the X cursors instead.

Figure 4 Cursors set on displayed signal

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Displaying Waveforms 3

 = sin

second Y

first Y

--------------------------

1.031

1.688

-------------

;  = 37.65 degrees of phase shift=

6 Move the Y1 and Y2 cursors to the intersection of the signal and the Y

axis. Again, note the Y value.

Figure 5 Cursors set to center of signal

7 Calculate the phase difference using the formula below.

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3 Displaying Waveforms

NOTE

Z-Axis Input in XY Display Mode (Blanking)

When you select the XY display mode, the time base is turned off. Channel 1 is the X-axis input, channel 2 is the Y-axis input, and channel 4 (or the External trigger on 2-channel models) is the Z-axis input. If you only want to see portions of the Y versus X display, use the Z-axis input. Z-axis turns the trace on and off (analog oscilloscopes called this Z-axis blanking because it turned the beam on and off). When Z is low (<1.4 V), Y versus X is displayed; when Z is high (>1.4 V), the trace is turned off.

Figure 6 Signals are 90 out of phase

70 InfiniiVision 7000B Series Oscilloscopes User’s Guide

Figure 7 Signals are in phase

Displaying Waveforms 3

To display the zoomed time base

Zoom, formerly called Delayed sweep mode, is a horizontally expanded version of normal display. When Zoom is selected, the display divides in half and the Zoom mode icon is displayed in the middle of the line at the top of the display. The top half of the display shows the normal sweep and the bottom half displays the Zoom sweep.

The Zoom window is a magnified portion of the normal sweep. You can use Zoom to locate and horizontally expand part of the normal sweep for a more detailed (higher- resolution) analysis of signals.

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3 Displaying Waveforms

Time/div for normal sweep

Time/div for Zoom window

Delay time momentarily displays when the Horizontal Position knob is turned

Select Zoom

Zoom window

Normal sweep window

These markers define the beginning and end of the Zoom window

Signal anomaly expanded in zoom window

To turn on (or off) Zoom: 1 Press the zoom key (or press the [Horiz] key and then the Zoom

softkey).

The area of the normal display that is expanded is outlined with a box and the rest of the normal display is lightened. The box shows the portion of the normal sweep that is expanded in the lower half.

To change the sweep speed for the Zoom window, turn the horizontal scale (sweep speed) knob. As you turn the knob, the sweep speed is highlighted in the status line above the waveform display area. The Horizontal scale (sweep speed) knob controls the size of the box.

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Displaying Waveforms 3

The Horizontal position (delay time) knob sets the left- to- right position of the zoom sweep. The delay value, which is the time displayed relative to the trigger point) is momentarily displayed in the upper- right portion of the display when the delay time ( ) knob is turned.

Negative delay values indicate you’re looking at a portion of the waveform before the trigger event, and positive values indicate you’re looking at the waveform after the trigger event.

To change the sweep speed for the normal sweep window, turn off Zoom; then, turn the horizontal scale (sweep speed) knob.

For information about using zoom mode for measurements, refer to

Chapter 5, “Measurements and Math Functions,” starting on page 153.

See Also “To specify the measurement window for Zoom mode” on page 386.

To change the horizontal scale knob’s coarse/fine adjustment setting

1 Push the horizontal scale knob (or press [Horiz] > Fine) to toggle between

fine and coarse adjustment of the horizontal scale.

The Fine softkey lets you change the sweep speed in smaller increments with the time/division knob.

The sweep speed remains fully calibrated when Fine is on.

The horizontal time/div scale value is displayed in the status line at the top of the display.

When Fine is turned off, the Horizontal sweep speed knob changes the time base sweep speed in a 1-2- 5 step sequence.

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3 Displaying Waveforms

To position the time reference (left, center, right)

Time reference is the reference point on the display for delay time (horizontal position).

1 Press [Horiz]. 2 In the Horizontal Menu, press Time Ref; then, select:

• Left — the time reference is set to one major division from the left

• Center — the time reference is set to the center of the display.

• Right — the time reference is set to one major division from the right

edge of the display.

A small hollow triangle ( position of the time reference. When delay time is set to zero, the trigger point indicator () overlays the time reference indicator.

The time reference position sets the initial position of the trigger event within acquisition memory and on the display, with delay set to 0.

Turning the Horizontal scale (sweep speed) knob expands or contracts the waveform about the time reference point (). See “To adjust the

horizontal (time/div) scale” on page 63.

Turning the Horizontal position ( ) knob in Normal mode (not Zoom) moves the trigger point indicator () to the left or right of the time reference point (). See “To adjust the horizontal delay (position)” on page 63.

 at the top of the display grid marks the

To navigate the time base

You can use t he [Navigate] key and controls to navigate through captured data, marks in the serial decode Lister, or segmented memory acquisitions.

To navigate time

When acquisitions are stopped, you can use the navigation controls to play through the captured data.

1 Press [Navigate]. 2 In the Navigate Menu, press Navigate; then, select Time.

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Displaying Waveforms 3

3 Press the navigation keys to play backward, stop, or play

forward in time. You can press the or keys multiple times to speed up the playback. There are three speed levels.

To navigate marks in the Lister

When acquisitions are stopped and serial decode is enabled, you can use the navigation controls to go to marks in the Lister (set using the [Search] key and menu).

1 Press [Navigate]. 2 In the Navigate Menu, press Navigate; then, select Search. 3 Press the back and forward keys to go to the previous or next

mark.

4 Press the stop key to set or clear a mark.

The Auto zoom softkey specifies whether the waveform display is automatically zoomed to fit the marked row as you navigate.

Pressing the Scroll Lister softkey lets you use the Entry knob to scroll through data rows in the Lister display.

To navigate segments

When the segmented memory acquisition is enabled and acquisitions are stopped, you can use the navigation controls to play through the acquired segments.

1 Press [Navigate]. 2 In the Navigate Menu, press Navigate; then, select Segments. 3 Press Play Mode; then, select:

• Manual — to play through segments manually.

In the Manual play mode:

• Press the back and forward keys to go to the previous or

next segment.

• Press the softkey to go to the first segment.

• Press the softkey to go to the last segment.

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3 Displaying Waveforms

• Auto — to play through segments in an automated fashion.

In the Auto play mode:

• Press the navigation keys to play backward, stop, or play

forward in time. You can press the or keys multiple times to speed up the playback. There are three speed levels.

76 InfiniiVision 7000B Series Oscilloscopes User’s Guide

Using the Vertical Controls

Channel coupling

Invert channel

Probe menu

Trigger level or threshold

Trigger source

Channel, Volts/div

Channel vernier

Channel 2 ground level

Channel 1 ground level

Bandwidth limit

Input impedance

The vertical controls include:

• The vertical scale and position knobs for each analog channel.

• The channel keys for turning a channel on or off and accessing the

channel’s softkey menu.

The following figure shows the Channel 1 Menu that appears after pressing the [1] channel key.

Displaying Waveforms 3

The ground level of the signal for each displayed analog channel is identified by the position of the icon at the far-left side of the display.

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3 Displaying Waveforms

NOTE

To turn waveforms on or off (channel or math)

1 Press an analog channel key turn the channel on or off (and to display

the channel’s menu). When a channel is on, its key is illuminated.

Turning channels off

You must be viewing the menu for a channel before you can turn it off. For example, if channel 1 and channel 2 are turned on and the menu for channel 2 is being displayed, to turn channel 1 off, press [1] to display channel 1 menu, then press [1] again to turn channel 1 off.

To adjust the vertical scale

1 Turn the large knob above the channel key marked to set the

vertical scale (volts/division) for the channel.

The vertical scale knob changes the analog channel scale in a 1- 2- 5 step sequence (with a 1:1 probe attached) unless fine adjustment is enabled (see “To change the vertical scale knob’s coarse/fine adjustment

setting” on page 81).

The analog channel Volts/Div value is displayed in the status line.

The default mode for expanding the signal when you turn the volts/division knob is vertical expansion about the ground level of the channel; however, you can change this to expand about the center of the display. See “To choose "expand about" center or ground” on page 383.

To adjust the vertical position

1 Turn the small vertical position knob ( ) to move the channel’s

waveform up or down on the display. The voltage value momentarily displayed in the upper right portion of

the display represents the voltage difference between the vertical center of the display and the ground level ( ) icon. It also represents the

78 InfiniiVision 7000B Series Oscilloscopes User’s Guide

Displaying Waveforms 3

NOTE

voltage at the vertical center of the display if vertical expansion is set to expand about ground (see “To choose "expand about" center or

ground” on page 383).

To specify channel coupling

Coupling changes the channel's input coupling to either AC (alternating current) or DC (direct current).

Measurement Hints

If the channel is DC coupled, you can quickly measure the DC component of the signal by simply noting its distance from the ground symbol.

If the channel is AC coupled, the DC component of the signal is removed, allowing you to use greater sensitivity to display the AC component of the signal.

1 Press the desired channel key. 2 In the Channel Menu, press the Coupling softkey to select the input

channel coupling:

• DC — DC coupling is useful for viewing waveforms as low as 0 Hz

that do not have large DC offsets.

• AC — AC coupling is useful for viewing waveforms with large DC

offsets. When AC coupling is chosen, you cannot select 50 mode. This is done to prevent damage to the oscilloscope.

AC coupling places a 3.5 Hz high-pass filter in series with the input waveform that removes any DC offset voltage from the waveform.

Note that Channel Coupling is independent of Trigger Coupling. To change trigger coupling see page 103.

To specify channel input impedance

The analog channel input impedance can be set to either 1M Ohm or 50 Ohm.

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3 Displaying Waveforms

NOTE

When you connect an AutoProbe, self-sensing probe, or a compatible InfiniiMax probe, the oscilloscope will automatically configure the oscilloscope to the correct impedance.

1 Press the desired channel key. 2 In the Channel Menu, press Imped (impedance); then, select:

• 50 Ohm — matches 50- ohm cables commonly used in making high

• 1M Ohm — is for use with many passive probes and for

frequency measurements, and 50- ohm active probes. This impedance matching gives you the most accurate measurements since reflections are minimized along the signal path. When 50 Ohm is selected, “50” is illuminated on the front panel next to the channel position knob. The oscilloscope automatically switches to 1 M Ohm mode to prevent possible damage if AC coupling is selected.

general- purpose measurements. The higher impedance minimizes the loading effect of the oscilloscope on the device under test.

To specify bandwidth limiting

1 Press the desired channel key. 2 In the Channel Menu, press the BW Limit softkey to enable or disable

bandwidth limiting. When bandwidth limit is on, the maximum bandwidth for the channel

is approximately 25 MHz. For waveforms with frequencies below this, turning bandwidth limit on removes unwanted high frequency noise from the waveform. The bandwidth limit also limits the trigger signal path of any channel that has BW Limit turned on.

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Displaying Waveforms 3

To change the vertical scale knob’s coarse/fine adjustment setting

1 Push the channel’s vertical scale knob (or press the channel key and

then the Fine softkey in the Channel Menu) to toggle between fine and coarse adjustment of the vertical scale.

When Fine adjustment is selected, you can change the channel’s vertical sensitivity in smaller increments. The channel sensitivity remains fully calibrated when Fine is on.

The vertical scale value is displayed in the status line at the top of the display.

When Fine is turned off, turning the volts/division knob changes the channel sensitivity in a 1- 2- 5 step sequence.

To invert a waveform

1 Press the desired channel key. 2 In the Channel Menu, press the Invert softkey to invert the selected

channel. When Invert is selected, the voltage values of the displayed waveform

are inverted. Invert affects how a channel is displayed, but does not affect triggering.

If the oscilloscope is set to trigger on a rising edge, it remains set to trigger on a same edge (triggers at the same point on the waveform) after the channel is inverted.

Inverting a channel will also change the result of any function selected in the Waveform Math Menu or any measurement.

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3 Displaying Waveforms

Attenuation factor

Measurement units

Skew adjust

Calibrate probe

Probe calibration not needed, not available when this softkey is ghosted.

Setting Analog Channel Probe Options

1 Press the probe’s associated channel key. 2 In the Channel Menu, press the Probe softkey to display the Channel

Probe Menu. This menu lets you select additional probe parameters such as

attenuation factor and units of measurement for the connected probe.

To specify the channel units

1 Press the probe’s associated channel key. 2 In the Channel Menu, press Probe. 3 In the Channel Probe Menu, press Units; then, select:

• Volts — for a voltage probe.

• Amps — for a current probe.

Channel sensitivity, trigger level, measurement results, and math functions will reflect the measurement units you have selected.

To specify the probe attenuation

This is set automatically if the oscilloscope can identify the connected probe. See “AutoProbe Interface” on page 52 and “Manually Setting the

Probe Attenuation Factor” on page 59.

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Displaying Waveforms 3

To specify the probe skew

When measuring time intervals in the ns range, small differences in cable length can affect the measurement. Use Skew to remove cable-delay errors between any two channels.

1 Probe the same point with both probes. 2 Press one of the probes associated channel key. 3 In the Channel Menu, press Probe. 4 In the Channel Probe Menu, press Skew; then, select the desired skew

value. Each analog channel can be adjusted ±100 ns in 10 ps increments for a

total of 200 ns difference.

The skew setting is not affected by recalling the [Default Setup] or by pressing [Auto Scale].

To calibrate a probe

See “Calibrating Probes” on page 57.

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Changing the Display Settings

To adjust waveform intensity

The Intensity knob lets you adjust the displayed waveforms to account for various signal characteristics, such as fast sweep speeds and low trigger rates. Increasing the intensity lets you see the maximum amount of noise and infrequently occurring events. Reducing the intensity can expose more detail in complex signals as shown in the following figures. The intensity knob does not affect the digital channels.

Figure 8 Amplitude Modulation Shown at 100% Intensity

84 InfiniiVision 7000B Series Oscilloscopes User’s Guide

Figure 9 Amplitude Modulation Shown at 40% Intensity

Displaying Waveforms 3

To set or clear infinite persistence

With infinite persistence, the oscilloscope updates the display with new acquisitions, but does not erase the results of previous acquisitions. All previous acquisitions are displayed in gray with reduced intensity. New acquisitions are shown in their normal color with normal intensity. Waveform persistence is kept only for the current display area; you cannot pan and zoom the infinite persistence display.

Use infinite persistence to measure noise and jitter, to see the worst- case extremes of varying waveforms, to look for timing violations, or to capture events that occur infrequently.

To use infinite persistence to display multiple repetitive events:

1 Connect a signal to the oscilloscope. 2 Press the [Display] key.

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NOTE

3 Press  Persist to turn on infinite persistence. The display will begin

accumulating multiple acquisitions.

4 Press the Clear  Persist softkey to erase previous acquisitions. The

oscilloscope will start to accumulate acquisitions again.

5 To return the oscilloscope to the normal display mode, turn off infinite

persistence; then, press the Clear  Persist softkey.

Accumulating multiple acquisitions

Turning off infinite persistence does not clear the display. This allows you to accumulate multiple acquisitions, stop acquisitions, and then compare future acquisitions to the stored waveforms. The display is cleared if you press the Clear Display softkey or if you press the [AutoScale] key.

See also “Glitch or Narrow Pulse Capture” on page 119.

To clear the display

1 Press [Clear Display] (or press [Display] > Clear Display).

To adjust the grid brightness

To adjust the display grid (graticule) brightness:

1 Press [Display]. 2 Press Grid; then, turn the Entry knob to change the intensity of the

displayed grid. The intensity level is shown in the Grid softkey and is adjustable from 0

to 100%. Each major vertical division in the grid corresponds to the vertical

sensitivity shown in the status line at the top of the display. Each major horizontal division in the grid corresponds to the sweep

speed time shown in the status line at the top of the display.

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Displaying Waveforms 3

To display waveforms as vectors or dots

Agilent InfiniiVision oscilloscopes are designed to operate optimally with vectors (connect the dots) on. This mode produces the most insightful waveforms for most situations.

To disable or enable vectors:

1 Press [Display]. 2 Press Vectors.

When enabled, Vectors draws a line between consecutive waveform data points.

• Vectors give an analog look to a digitized waveform. Complex analog

signals like video and modulated signals show analog-like intensity information with vectors on.

• Vectors allow you to see steep edges on waveforms, such as square

waves.

• Vectors allow subtle detail of complex waveforms to be viewed, much

like an analog oscilloscope trace, even when the detail is just a small number of pixels in size.

You may want to turn vectors off when highly complex or multivalued waveforms are displayed. Turning vectors off may aid the display of multivalued waveforms such as eye diagrams.

Having vectors on does not slow down the display rate.

The oscilloscope turns vectors on whenever the acquisition system stops.

Digital channels on a mixed-signal oscilloscope are not affected by the Display Menu. They are always displayed with vectors on. They also only contain one acquisition worth of information.

To freeze the display

To freeze the display without stopping running acquisitions:

1 Press the [Display] key. 2 Press the Freeze Display softkey.

To un-freeze the display, press Freeze Display again.

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Many activities, such as adjusting the trigger level, adjusting vertical or horizontal settings, or saving data will un- freeze the display.

Manual cursors can be used on the frozen display.

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Using Labels

To turn the label display on or off

Displaying Waveforms 3

You can define labels and assign them to each analog input channel, or you can turn labels off to increase the waveform display area. Labels can also be applied to digital channels on MSO models.

1 Press the [Label] key on the front panel.

This turns on display labels for the analog and digital channels. When the [Label] key is illuminated, the labels for displayed channels are displayed at the left edge of the displayed traces. The figure below shows an example of the default labels assigned when you turn the label display on. The channel labels default to their channel number.

2 To turn the labels off, press the [Label] key until it is not illuminated.

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To assign a predefined label to a channel

1 Press the [Label] key. 2 Press the Channel softkey, then turn the Entry knob or successively

press the Channel softkey to select a channel for label assignment.

The figure above shows the list of channels and their default labels. The channel does not have to be turned on to have a label assigned to it.

3 Press the Library softkey, then turn the Entry knob or successively press

the Library softkey to select a predefined label from the library.

4 Press the Apply New Label softkey to assign the label to your selected

channel.

5 Repeat the above procedure for each predefined label you want to

assign to a channel.

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Displaying Waveforms 3

To define a new label

1 Press the [Label] key. 2 Press the Channel softkey, then turn the Entry knob or successively

press the softkey to select a channel for label assignment. The channel does not have to be turned on to have a label assigned to

it. If the channel is turned on, its current label will be highlighted.

3 Press the Spell softkey, then turn the Entry knob to select the first

character in the new label. Turning the Entry knob selects a character to enter into the highlighted

position shown in the “New label =” line above the softkeys and in the Spell softkey. Labels can be up to ten characters in length.

4 Press the Enter softkey to enter the selected character and to go to the

next character position. You may position the highlight on any character in the label name by

successively pressing the Enter softkey.

5 To delete a character from the label, press the Enter softkey until the

letter you want to delete is highlighted, then press the Delete Character softkey.

6 When you are done entering characters for the label, press the

Apply New Label softkey to assign the label to the selected channel.

When you define a new label, it is added to the nonvolatile label list.

Label Assignment Auto-Increment

When you assign a label ending in a digit, such as ADDR0 or DATA0, the oscilloscope automatically increments the digit and displays the modified label in the “New label” field after you press the Apply New Label softkey. Therefore, you only need to select a new channel and press the Apply New Label softkey again to assign the label to the channel. Only the original label is saved in the label list. This feature makes it easier to assign successive labels to numbered control lines and data bus lines.

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NOTE

To load a list of labels from a text file you create

It may be convenient to create a list of labels using a text editor, then load the label list into the oscilloscope. This lets you type on a keyboard rather than edit the label list using the oscilloscope’s controls.

You can create a list of up to 75 labels and load it into the oscilloscope. Labels are added to the beginning of the list. If more than 75 labels are loaded, only the first 75 are stored.

To load labels from a text file into the oscilloscope: 1 Use a text editor to create each label. Each label can be up to ten

characters in length. Separate each label with a line feed.

2 Name the file labellist.txt and save it on a USB mass storage device

such as a thumb drive.

3 Load the list into the oscilloscope using the File Explorer (press [Utility]

> File Explorer).

Label List Management

When you press the Library softkey, you will see a list of the last 75 labels used. The list does not save duplicate labels. Labels can end in any number of trailing digits. As long as the base string is the same as an existing label in the library, the new label will not be put in the library. For example, if label A0 is in the library and you make a new label called A12345, the new label is not added to the library.

When you save a new user-defined label, the new label will replace the oldest label in the list. Oldest is defined as the longest time since the label was last assigned to a channel. Any time you assign any label to a channel, that label will move to the newest in the list. Thus, after you use the label list for a while, your labels will predominate, making it easier to customize the instrument display for your needs.

When you reset the label library list (see next topic), all of your custom labels will be deleted, and the label list will be returned to its factory configuration.

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Displaying Waveforms 3

NOTE

To reset the label library to the factory default

1 Press [Utility] > Options > Preferences > More.

Pressing the Default Library softkey will remove all user-defined labels from the library and set the labels back to the factory default. Once deleted, these user-defined labels cannot be recovered.

2 Press the Default Library softkey.

This will delete all user-defined labels from the library and set the labels in the library back to the factory default. However, this does not default the labels currently assigned to the channels (those labels that appear in the waveform area).

Defaulting labels without erasing the default library.

Pressing [Default Setup] sets all channel labels back to the default labels but does not erase the list of user-defined labels in the library.

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Agilent InfiniiVision 7000B Series Oscilloscopes User’s Guide

4 Triggering

Triggering - General Information 97 Trigger Mode and Coupling Menu 98 Auto and Normal Trigger modes 99 Trigger Level Adjustment 102 Trigger Coupling 103 Trigger Noise Rejection 104 Trigger Holdoff 107 External Trigger Input 109 Trigger Types 112 Trigger Types 112 Duration Trigger 114 Edge Trigger 117 Glitch or Narrow Pulse Capture 119 Nth Edge Burst Trigger 123 Pattern Trigger 125 Pulse Width Trigger 128 Sequence Trigger 131 TV Trigger 138 USB Trigger 150

This chapter provides instructions for setting up triggers for various signal types. Setups can be saved if desired (see “Saving and Recalling Data” on page 206).

The easiest way to trigger on a waveform is to use AutoScale. Simply press the [AutoScale] key and the oscilloscope will attempt to trigger on the waveform using a simple Edge Trigger type. For AutoScale details see

“Input a Waveform and AutoScale” on page 32.

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4 Triggering

See Also • “CAN Triggering” on page 264 if you have Option AMS (N5424A).

Complex waveforms may require specific trigger setups as described in this chapter.

• “FlexRay Triggering” on page 315 if you have Option FLX (N5432C).

• “I2C Triggering” on page 284 if you have Option LSS (N5423A).

• “I2S Triggering” on page 306 if you have Option SND (N5468A).

• “LIN Triggering” on page 274 if you have Option AMS (N5424A).

• “MIL- STD 1553 Triggering” on page 326 if you have Option 553

(N5469A).

• “SPI Triggering” on page 295 if you have Option LSS (N5423A).

• “UART/RS232 Triggering” on page 335 if you have Option 232 (N5457A).

96 InfiniiVision 7000B Series Oscilloscopes User’s Guide

Triggering - General Information

Trigger Event

Post-Trigger Buffer

Acquisition Memory

Pre-Trigger Buffer

A triggered waveform is one in which the oscilloscope begins tracing (displaying) the waveform, from the left side of the display to the right, each time a particular trigger condition is met. This provides stable display of periodic signals such as sine waves and square waves, as well as nonperiodic signals such as serial data streams.

The figure below shows the conceptual representation of acquisition memory. You can think of the trigger event as dividing acquisition memory into a pre- trigger and post-trigger buffer. The position of the trigger event in acquisition memory is defined by the time reference point and the delay (horizontal position) setting (see page 63).

Triggering 4

Agilent InfiniiVision oscilloscopes provide a full set of features to help automate your measurement tasks. MegaZoom technology lets you capture and examine triggered or untriggered waveforms. You can:

• Modify the way the oscilloscope acquires data.

• Set up simple or complex trigger conditions as needed, to capture only

the sequence of events you want to examine.

See Also • “Segmented Memory” on page 234.

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4 Triggering

2-channel models only

Trigger Mode and Coupling Menu

• Press the [Mode/Coupling] key in the Trigger section of the front panel.

98 InfiniiVision 7000B Series Oscilloscopes User’s Guide

Auto and Normal Trigger modes

If you are acquiring a slow signal from a serial bus or another signal that arrives in bursts, the oscilloscope may Auto- trigger between signal bursts, which will cause the display to appear unstable. You can solve this problem by selecting the Normal trigger mode.

Choosing Auto Trigger Mode or Normal Trigger Mode

If you press [Run] when the oscilloscope is in Normal trigger mode, a trigger must be detected before an acquisition can complete. No waveform will be displayed unless the trigger condition is met.

In Auto trigger mode, the oscilloscope automatically triggers and captures waveforms when you press [Run].

Triggering 4

In many cases, a triggered display is not needed to check signal levels or activity. For these applications, use Auto trigger mode (which is the default setting). If you only want to acquire specific events as specified by the trigger settings, use Normal trigger mode.

In some cases, such as when triggering on a slow serial signal (for example, I Normal trigger mode to stabilize the display by preventing the oscilloscope from Auto-triggering.

You can select the trigger mode by pressing the [Mode/Coupling] key, then the Mode softkey.

1 Press the [Mode/Coupling] key. 2 Press the Mode softkey, then select Normal or Auto.

• Normal — displays a waveform when the trigger conditions are met,

• Auto — is the same as Normal mode, except it forces the oscilloscope

C, SPI, CAN, LIN, etc.) it may be necessary to select the

otherwise the oscilloscope does not trigger and the display is not updated.

to trigger if the trigger conditions are not met.

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Auto Mode

Use the auto trigger modes for signals other than low-repetitive- rate signals and for unknown signal levels. To display a DC signal, you must use auto trigger mode since there are no edges on which to trigger.

When you select [Run], the oscilloscope operates by first filling the pre- trigger buffer. It starts searching for a trigger after the pre- trigger buffer is filled, and continues to flow data through this buffer while it searches for the trigger. While searching for the trigger, the oscilloscope overflows the pre-trigger buffer; the first data put into the buffer is the first pushed out (FIFO). When a trigger is found, the pre- trigger buffer will contain the events that occurred just before the trigger. If no trigger is found, the oscilloscope generates a trigger and displays the data as though a trigger had occurred. In this case, the background of the Auto indicator at the top of the display will flash, and the Auto indicator will change to Auto? indicating that the oscilloscope is forcing triggers.

When you press the [Single] key, the oscilloscope will fill pre- trigger buffer memory, and continue flowing data through the pre- trigger buffer until the auto trigger overrides the searching and forces a trigger. At the end of the trace, the oscilloscope will stop and display the results.

Normal Mode

Use Normal trigger mode for low repetitive-rate signals or when Auto trigger is not required.

In Normal mode the oscilloscope must fill the pre- trigger buffer with data before it will begin searching for a trigger event. The trigger mode indicator on the status line flashes Trig’d? to indicate the oscilloscope is filling the pre- trigger buffer. While searching for the trigger, the oscilloscope overflows the pre- trigger buffer; the first data put into the buffer is the first pushed out (FIFO).

When the trigger event is found, the oscilloscope will fill the post- trigger buffer and display the acquisition memory. The trigger mode indicator on the status line indicates Trig’d (not flashing). If the acquisition was initiated by [Run/Stop], the process repeats. If the acquisition was initiated by pressing [Single], then the acquisition stops and you can Pan and Zoom the waveform.

100 InfiniiVision 7000B Series Oscilloscopes User’s Guide

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