Keysight Technologies 8990B User Manual

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Keysight 8990B Peak Power Analyzer

User’s Guide

Notices

CAUTION

WARNING

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

Manual Part Number

08990-90005

Edition

Edition 13, June 3, 2016

Printed in:

Printed in Malaysia

Published by:

Keysight Technologies Bayan Lepas Free Industrial Zone, 11900 Penang, Malaysia

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.

Declaration of Conformity

Declarations of Conformity for this product and for other Keysight products Web.

may be downloaded from the

U.S. Government Rights

The Software is “commercial computer software,” as defined by Federal Acquisition Regulation (“FAR”) 2.101. Pursuant to FAR 12.212 and 27.405-3 and Department of Defense FAR Supplement (“DFARS”) 227.7202, the U.S. government acquires commercial computer software under the same terms by which the software is customarily provided to the public. Accordingly, Keysight provides Software to U.S. government customers under its standard commercial license, which is embodied

its End User License Agreement

in (EULA). The license set forth in the EULA represents the exclusive authority by which the U.S. government may use, modify, distribute, or disclose the Software. The EULA and the license set forth therein, does not require or permit, among other things, that Keysight: (1) Furnish technical

information related to commercial computer software or commercial computer software documentation that is not customarily provided to the public; or (2) Relinquish to, or otherwise provide, the government rights in excess of these rights customarily provided to the public to use, modify, reproduce, release, perform, display, or disclose commercial computer software or commercial computer software documentation. No additional government requirements beyond those set forth in the EULA shall apply, except to the extent that those terms, rights, or licenses are explicitly required from all providers of commercial computer software pursuant to the FAR and the DFARS and are set forth specifically in writing elsewhere in the EULA. Keysight shall be under no obligation to update, revise or otherwise modify the Software. With respect to any technical data as defined by FAR 2.101, pursuant to FAR

12.211 and 27.404.2 and DFARS

227.7102, the U.S. government acquires no greater than Limited Rights as defined in FAR 27.401 or DFAR

227.7103-5 (c), as applicable in any technical data.

the

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, KEYSIGHT 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. KEYSIGHT 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 KEYSIGHT 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.

Safety Information

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.

2 Keysight 8990B User’s Guide

Safety Symbols

The following symbols on the instrument and in the documentation indicate precautions which must be taken to maintain safe operation of the instrument.

Caution, risk of danger (refer to this manual for specific Warning or Caution information)

Frame or chassis (ground) terminal Protective earth (ground) terminal

Caution, risk of electric shock Earth (ground) terminal

On (mains supply) Off (mains supply)

Alternating current (AC)

Keysight 8990B User’s Guide 3

Safety Considerations

WARNING

This is a Safety Class I instrument (provided with a protective earthing ground, incorporated in the power cord). The mains plug shall only be inserted in a socket outlet provided with a protective earth contact. Any interruption of the protective conductor inside or outside of the instrument is likely to damage the instrument. Intentional interruption is prohibited.

– Do not operate the instrument in an explosive atmosphere or in the

presence of flammable gasses or fumes.

– Do not use repaired fuses or short-circuited fuseholders. For continued

protection against fire, replace the line fuse(s) only with fuse(s) of the same voltage and current rating and type.

– Do not perform procedures involving cover or shield removal unless you

are qualified to do so. Operating personnel must not remove the meter covers or shields. Procedures involving the removal of covers and shields are for use by service-trained personnel only.

– Do not service or adjust alone. Under certain conditions, dangerous

voltages may exist even with the instrument switched off. To avoid electrical shock, service personnel must not attempt internal service or adjustment unless another person, capable of rendering first aid and resuscitation, is present.

– Do not operate damaged instrument. Whenever it is possible that the

safety protection features built into this instrument have been impaired, either through physical damage, excessive moisture, or any other reason, REMOVE POWER and do not use the instrument until safe operation can be verified by service-trained personnel. If necessary, return the instrument to Keysight for service and repair to ensure the safety features are maintained.

– Do not substitute parts or modify the instrument. Because of the danger

of introducing additional hazards, do not install substitute parts or perform any unauthorized modification to the instrument. Return the instrument to Keysight for service and repair to ensure the safety features are maintained.

4 Keysight 8990B User’s Guide

Environmental Conditions

This instrument is designed for indoor use and in an area with low condensation. The table below shows the general environmental requirements for this instrument.

Environmental condition Requirement

Temperature

Humidity

Altitude Up to 4600 m

Pollution degree 2

Operating condition – 5 °C to 40 °C Storage condition – –40 °C to 70 °C

Operating condition – Up to 95% RH at 40°C (non-condensing) Storage condition – Up to 90% RH at 65°C (non-condensing)

Keysight 8990B User’s Guide 5

Regulatory Markings

The CE mark is a registered trademark of the European Community. This CE mark shows that the product complies with all the relevant European Legal Directives.

ICES/NMB-001 indicates that this ISM device complies with the Canadian ICES-001.

Cet appareil ISM est conforme a la norme NMB-001 du Canada.

The CSA mark is a registered trademark of the Canadian Standards Association.

This symbol is a South Korean Class A EMC Declaration. This is a Class A instrument suitable for professional use and in electromagnetic environment outside of the home.

The RCM mark is a registered trademark of the Spectrum Management Agency of Australia. This signifies compliance with the Australia EMC Framework regulations under the terms of the Radio Communication Act of 1992.

This instrument complies with the WEEE Directive (2002/96/EC) marking requirement. This affixed product label indicates that you must not discard this electrical or electronic product in domestic household waste.

This symbol indicates the time period during which no hazardous or toxic substance elements are expected to leak or deteriorate during normal use. Forty years is the expected useful life of the product.

6 Keysight 8990B User’s Guide

Waste Electrical and Electronic Equipment (WEEE) Directive 2002/96/EC

Product category:

With reference to the equipment types in the WEEE directive Annex 1, this instrument is classified as a “Monitoring and Control Instrument” product.

The affixed product label is as shown below.

Do not dispose in domestic household waste.

Keysight 8990B User’s Guide 7

THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK.

8 Keysight 8990B User’s Guide

Safety Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Safety Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Environmental Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Regulatory Markings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Waste Electrical and Electronic Equipment (WEEE) Directive

2002/96/EC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Product category: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Sales and Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

1Introduction

Overview of the 8990B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

Standard Shipped Items . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

Standard 8990B options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

Optional Items . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

Sensor Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

Probe Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

Front Panel Outlook . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

Side Panel Outlook . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

Rear Panel Outlook . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

Display Outlook . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

LCD display layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39

2 Using the 8990B

Hiding the Side Menus and Multi-Purpose Pane . . . . . . . . . . . . . . . . .43

Enabling or Disabling the Touch Screen . . . . . . . . . . . . . . . . . . . . . . . .44

Accessing the Toolbar Menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45

Turning Channels On or Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49

Accessing the Channel Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51

Adjusting the Vertical Scale and Offset . . . . . . . . . . . . . . . . . . . . . . . . .56

Keysight 8990B User’s Guide 9

Adjusting the Horizontal Scale and Offset . . . . . . . . . . . . . . . . . . . . . . 60

Starting and Stopping Waveform Acquisition . . . . . . . . . . . . . . . . . . . . 63

Continuous waveform acquisition . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

Single waveform acquisition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

Clearing the Waveform Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

Equivalent Time Sampling (ETS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

Setting the Averaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

Enabling Autoscale . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

Accessing the Trigger Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

Setting the Measurement Threshold . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

Saving and Loading Waveform Memories . . . . . . . . . . . . . . . . . . . . . . . 82

Saving waveform memories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

Loading waveform memories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

Performing Waveform Math Operations . . . . . . . . . . . . . . . . . . . . . . . . 86

Add . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88

Averaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

Common mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

Divide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

Invert . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

Magnify . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

Multiply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

Power-added efficiency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

Subtract . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102

Square . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

Square root . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104

Setting the Frequency-Dependent Offset (FDO) . . . . . . . . . . . . . . . . . 105

Magnifying a Section of the Waveform Using Zoom . . . . . . . . . . . . . . 108

Splitting the Waveform Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

Displaying the Complementary Cumulative Distribution Function (CCDF)

Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113

Accessing the Multipulse Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120

Multipulse measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123

Save the multipulse measurement . . . . . . . . . . . . . . . . . . . . . . . . . 124

10 Keysight 8990B User’s Guide

Accessing the Display XY Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .127

Accessing the Multi-Purpose Pane . . . . . . . . . . . . . . . . . . . . . . . . . . .130

Status view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .130

Measurement view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .131

Marker view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .135

X-Y position view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .141

Droop measurement view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .143

Limit test view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .145

Log view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .150

Performing Zeroing and Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . .151

Zeroing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .151

Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .152

Sensor Check Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .154

Saving the Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .156

Saving and Restoring 8990B States . . . . . . . . . . . . . . . . . . . . . . . . . . .157

Logging and Saving the Measurement Data . . . . . . . . . . . . . . . . . . . .159

Generating and Saving a Report . . . . . . . . . . . . . . . . . . . . . . . . . . . . .161

Secure Erase . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .164

Restoring the 8990B to Factory Default Settings . . . . . . . . . . . . . . . .165

Configuring the Display Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . .168

Remote Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .170

3 Maintenance

Front Panel Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .172

Self-Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .175

Instrument self-test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .175

Remote self-test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .177

Test descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .177

Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .179

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .179

Error list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .181

Recovering the 8990B Hard Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . .190

Keysight 8990B User’s Guide 11

Removing the 8990B Hard Drive (Option 801) . . . . . . . . . . . . . . . . . . 191

Cleaning the 8990B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193

Contacting Keysight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194

Prior to contacting Keysight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194

Instrument serial numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195

Recommended calibration interval . . . . . . . . . . . . . . . . . . . . . . . . . 196

Returning the 8990B for Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197

Packaging the 8990B for shipment . . . . . . . . . . . . . . . . . . . . . . . . . 197

Keysight Sales and Service Offices . . . . . . . . . . . . . . . . . . . . . . . . . . . 199

4Characteristics and Specifications

12 Keysight 8990B User’s Guide

List of Figures

Figure 1-1 Front panel outlook . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Figure 1-2 Run Control section . . . . . . . . . . . . . . . . . . . . . . . . . . .28

Figure 1-3 Horizontal section . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

Figure 1-4 Trigger section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

Figure 1-5 Measure section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

Figure 1-6 Vertical section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32

Figure 1-7 Side panel outlook . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

Figure 1-8 Rear panel outlook . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

Figure 1-9 Display outlook . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

Figure 1-10 LCD display layout . . . . . . . . . . . . . . . . . . . . . . . . . . . .39

Figure 2-1 Pin button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43

Figure 2-2 Display outlook with hidden menus and multi-purpose

Figure 2-3 Touch button in the Horizontal section . . . . . . . . . . . .44

Figure 2-4 Toolbar on the graphical interface . . . . . . . . . . . . . . . .45

Figure 2-5 Channel number buttons in the Vertical section . . . . .49

Figure 2-6 Channel number button on the graphical interface . .50

Figure 2-7 Vertical scale area on the graphical interface . . . . . . .51

Figure 2-8 RF input Channel Setup dialog . . . . . . . . . . . . . . . . . .52

Figure 2-9 Video input Channel Setup dialog . . . . . . . . . . . . . . . .54

Figure 2-10 Vertical scale and offset knobs in the Vertical section 56 Figure 2-11 Vertical scale and reference level field for the RF input

Figure 2-12 Vertical scale and offset field for the video input channel

Figure 2-13 Vertical scale keypad dialogs . . . . . . . . . . . . . . . . . . . .58

Figure 2-14 Vertical scale adjustment on the graphical interface .59 Figure 2-15 Reference level keypad dialog for the RF input channel .

Figure 2-16 Vertical offset keypad dialog for the video input channel

Figure 2-17 Horizontal scale and offset knobs in the Horizontal

Figure 2-18 Horizontal scale on the graphical interface . . . . . . . . .61

pane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43

channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57

section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60

Keysight 8990B User’s Guide 13

Figure 2-19 Horizontal scale keypad dialog . . . . . . . . . . . . . . . . . . 61

Figure 2-20 Horizontal offset on the graphical interface . . . . . . . . 62

Figure 2-21 Horizontal offset keypad dialog . . . . . . . . . . . . . . . . . . 62

Figure 2-22 Run/Stop button in the Run Control section . . . . . . . 63

Figure 2-23 Start and stop buttons on the graphical interface . . . 64 Figure 2-24 Single waveform acquisition button in the Run Control

section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

Figure 2-25 Single waveform acquisition button on the graphical

interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

Figure 2-26 Clear Display button in the Horizontal section . . . . . . 66

Figure 2-27 Clear button on the graphical interface . . . . . . . . . . . 66

Figure 2-28 Acquisition selection in the Setup menu . . . . . . . . . . . 67

Figure 2-29 Acquisition Setup dialog . . . . . . . . . . . . . . . . . . . . . . . 68

Figure 2-30 ETS status in the status view . . . . . . . . . . . . . . . . . . . . 68

Figure 2-31 ETS acquiring data status in the status view . . . . . . . 70

Figure 2-32 Averaging button on the graphical interface . . . . . . . 71

Figure 2-33 Averaging dialog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

Figure 2-34 Averaging count selection on the Averaging dialog . . 72

Figure 2-35 Waveform averaging status in the status view . . . . . . 72

Figure 2-36 Autoscale button in the Horizontal section . . . . . . . . . 73

Figure 2-37 Autoscale button on the graphical interface . . . . . . . . 73

Figure 2-38 Autoscale notification dialog . . . . . . . . . . . . . . . . . . . . 74

Figure 2-39 Undo AutoScale? dialog . . . . . . . . . . . . . . . . . . . . . . . 74

Figure 2-40 Menu button in the Trigger section . . . . . . . . . . . . . . . 75

Figure 2-41 Trigger menu on the graphical interface . . . . . . . . . . . 76

Figure 2-42 Trigger Setup dialog . . . . . . . . . . . . . . . . . . . . . . . . . . 77

Figure 2-43 Trigger Conditioning dialog . . . . . . . . . . . . . . . . . . . . . 78

Figure 2-44 Measurement Thresholds selection in the Setup menu .

Figure 2-45 Measurement Thresholds dialog . . . . . . . . . . . . . . . . . 80

Figure 2-46 Save Waveform... selection in the File menu . . . . . . . 82

Figure 2-47 Load Waveform... selection in the File menu . . . . . . . 83

Figure 2-48 Waveform memory selection in the Setup menu . . . . 83

Figure 2-49 Waveform Memory dialog . . . . . . . . . . . . . . . . . . . . . . 84

Figure 2-50 Load from waveform selection . . . . . . . . . . . . . . . . . . 84

Figure 2-51 Load waveform from file . . . . . . . . . . . . . . . . . . . . . . . 85

Figure 2-52 On-screen keyboard . . . . . . . . . . . . . . . . . . . . . . . . . . 85

14 Keysight 8990B User’s Guide

Figure 2-53 Waveform Math selection in the Setup menu . . . . . . .86

Figure 2-54 Waveform Math dialog . . . . . . . . . . . . . . . . . . . . . . . . .87

Figure 2-55 Resultant trace waveform of the math operation . . . .87

Figure 2-56 Add . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .88

Figure 2-57 Averaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .89

Figure 2-58 Common Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .90

Figure 2-59 Divide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .91

Figure 2-60 Invert . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .92

Figure 2-61 Magnify . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .93

Figure 2-62 Multiply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .94

Figure 2-63 Power-added efficiency . . . . . . . . . . . . . . . . . . . . . . . .96

Figure 2-64 Power-added efficiency with division symbol (/) . . . . .97

Figure 2-65 Power-added efficiency 2 with multiplication symbol (x)

98 Figure 2-66 Power-added efficiency 2 with division symbol (/) . . .99 Figure 2-67 Power-added efficiency 3 with multiplication symbol (x)

100 Figure 2-68 Power-added efficiency 3 the division symbol (/) . . .101

Figure 2-69 Subtract . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .102

Figure 2-70 Square . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .103

Figure 2-71 Square root . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .104

Figure 2-72 FDO selection in the Tools menu . . . . . . . . . . . . . . . .105

Figure 2-73 FDO Table dialog . . . . . . . . . . . . . . . . . . . . . . . . . . . .106

Figure 2-74 Edit button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .106

Figure 2-75 Custom FDO table data dialog . . . . . . . . . . . . . . . . .107

Figure 2-76 New Data dialog . . . . . . . . . . . . . . . . . . . . . . . . . . . . .107

Figure 2-77 FDO status in status view . . . . . . . . . . . . . . . . . . . . . .107

Figure 2-78 Zoom button in the Horizontal section . . . . . . . . . . .108

Figure 2-79 Zoom selection in the Acquisition menu . . . . . . . . . .108

Figure 2-80 Rectangle frame at the main graph window in zoom display

layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .109

Figure 2-81 Measurement view in zoom display layout . . . . . . . .110

Figure 2-82 Split Screen selection in the Acquisition menu . . . . .111

Figure 2-83 Split screens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .112

Figure 2-84 CCDF selection in the Acquisition menu . . . . . . . . . .113

Figure 2-85 CCDF graph display in table view . . . . . . . . . . . . . . .114

Figure 2-86 Marker view in CCDF . . . . . . . . . . . . . . . . . . . . . . . . .115

Keysight 8990B User’s Guide 15

Figure 2-87 CCDF menu on the graphical interface . . . . . . . . . . . 116

Figure 2-88 Trigger Conditioning dialog . . . . . . . . . . . . . . . . . . . . 117

Figure 2-89 CCDF Setup dialog . . . . . . . . . . . . . . . . . . . . . . . . . . 118

Figure 2-90 MultiPulse selection in the Acquisition menu . . . . . . 120

Figure 2-91 MultiPulse Setup dialog . . . . . . . . . . . . . . . . . . . . . . . 120

Figure 2-92 Multipulse status on the multi-purpose pane . . . . . . 121

Figure 2-93 Multipulse display . . . . . . . . . . . . . . . . . . . . . . . . . . . 122

Figure 2-94 Measurement view in multipulse display . . . . . . . . . 123

Figure 2-95 To delete multipulse measurement results on the

multi-purpose pane . . . . . . . . . . . . . . . . . . . . . . . 123

Figure 2-96 Multipulse measurement view dialog . . . . . . . . . . . . 124

Figure 2-97 Save measurement... > Multipulse selection in the Acquisi-

tion menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125

Figure 2-98 Save multipulse dialog . . . . . . . . . . . . . . . . . . . . . . . 126

Figure 2-99 Display XY selection in the Acquisition menu . . . . . . 127

Figure 2-100 Display XY mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128

Figure 2-101 DisplayXY Reference Trace dialog . . . . . . . . . . . . . . . 129

Figure 2-102 Multi-purpose pane on the graphical interface . . . . 130

Figure 2-103 Status view on the multi-purpose pane . . . . . . . . . . 130

Figure 2-104 Measure functions menu on the graphical interface 131

Figure 2-105 Measurement dialog . . . . . . . . . . . . . . . . . . . . . . . . . 132

Figure 2-106 Measurement view on the multi-purpose pane . . . . 132

Figure 2-107 To delete measurement results on the multi-purpose

pane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133

Figure 2-108 To track the measurement results on the multi-purpose

pane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133

Figure 2-109 To view a histogram based on the results on the multi-pur-

pose pane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134

Figure 2-110 Histogram window . . . . . . . . . . . . . . . . . . . . . . . . . . . 134

Figure 2-111 Marker view on the multi-purpose pane . . . . . . . . . . 135

Figure 2-112 Marker buttons on the graphical interface . . . . . . . . 135

Figure 2-113 Markers button in the Measure section . . . . . . . . . . 136

Figure 2-114 Markers dialog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136

Figure 2-115 Select knob in the Measure section . . . . . . . . . . . . . 137

Figure 2-116 Marker indicator on the graphical interface . . . . . . . 137

Figure 2-117 Marker labels on the graphical interface . . . . . . . . . 137

Figure 2-118 Delay Measurement button in the Marker view . . . . 138

16 Keysight 8990B User’s Guide

Figure 2-119 Delay Measurement Setup dialog . . . . . . . . . . . . . . .139

Figure 2-120 Delay measurement in the Marker view . . . . . . . . . .139

Figure 2-121 Spacing Measurement button in the Marker view . .140

Figure 2-122 Spacing Measurement Setup dialog . . . . . . . . . . . . .140

Figure 2-123 Spacing measurement in the Marker view . . . . . . . .141

Figure 2-124 X-Y Position view . . . . . . . . . . . . . . . . . . . . . . . . . . . .141

Figure 2-125 Markers dialog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .142

Figure 2-126 X-Y position search results . . . . . . . . . . . . . . . . . . . .142

Figure 2-127 Droop measurement graph . . . . . . . . . . . . . . . . . . . .143

Figure 2-128 Droop Measurement button in the Droop measurement

view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .144

Figure 2-129 Droop measurement Setup dialog . . . . . . . . . . . . . . .144

Figure 2-130 Droop measurement view on the multi-purpose pane . .

144

Figure 2-131 Limit test... selection in the Tools menu . . . . . . . . . .145

Figure 2-132 Limit Test dialog . . . . . . . . . . . . . . . . . . . . . . . . . . . . .145

Figure 2-133 Limit Test dialog – Test Target tab . . . . . . . . . . . . . .147

Figure 2-134 Limit Test dialog – Run Option tab . . . . . . . . . . . . . .148

Figure 2-135 Limit Test dialog – Action on Failure tab . . . . . . . . . .149

Figure 2-136 Limit test results . . . . . . . . . . . . . . . . . . . . . . . . . . . . .149

Figure 2-137 Log view on the multi-purpose pane . . . . . . . . . . . . .150

Figure 2-138 Log dialog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .150

Figure 2-139 Zero button on the Channel Setup dialog . . . . . . . . .151

Figure 2-140 Auto Cal... selection in the Tools menu . . . . . . . . . . .152

Figure 2-141 Auto Cal dialog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .152

Figure 2-142 Cal and Zero & Cal buttons on the Channel Setup dialog

153

Figure 2-143 Check Source selection in the Tools menu . . . . . . . .154

Figure 2-144 Check Source dialog . . . . . . . . . . . . . . . . . . . . . . . . .154

Figure 2-145 Save Screen... selection in the File menu . . . . . . . . .156

Figure 2-146 Save Current Setup... selection in the File menu . . .157 Figure 2-147 Restore Saved Setup... selection in the File menu . .158 Figure 2-148 Save measurement > Normal mode selection in the Acqui-

sition menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .159

Figure 2-149 Measurement logging buttons on the graphical interface

159

Figure 2-150 Measurement Logging dialog . . . . . . . . . . . . . . . . . .160

Keysight 8990B User’s Guide 17

Figure 2-151 Save Report... selection in the File menu . . . . . . . . . 161

Figure 2-152 Report dialog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162

Figure 2-153 Generated report . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163

Figure 2-154 Secure Erase... selection in the Tools menu . . . . . . . 164

Figure 2-155 Secure Erase dialog . . . . . . . . . . . . . . . . . . . . . . . . . . 164

Figure 2-156 Default Setup button in the Horizontal section . . . . 165

Figure 2-157 Restore Default Setup selection in the File menu . . 165

Figure 2-158 Restoring PPA setup notification dialog . . . . . . . . . . 166

Figure 2-159 Display Setup selection in the Setup menu . . . . . . . 168

Figure 2-160 Display Setup dialog . . . . . . . . . . . . . . . . . . . . . . . . . 168

Figure 2-161 Example of the waveform display with the waveform mini-

mum and maximum tracking feature enabled . . . 169

Figure 2-162 Remote Setup... selection in the Tools menu . . . . . . 170

Figure 2-163 Remote Setup dialog . . . . . . . . . . . . . . . . . . . . . . . . . 170

Figure 3-1 Front Panel test... selection in the Tools menu . . . . . 172

Figure 3-2 Front Panel Test dialog . . . . . . . . . . . . . . . . . . . . . . . 173

Figure 3-3 Front panel test results . . . . . . . . . . . . . . . . . . . . . . . 174

Figure 3-4 Self Test... selection in the Tools menu . . . . . . . . . . . 175

Figure 3-5 Self Test dialog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176

Figure 3-6 Self-test result in the Self Test dialog . . . . . . . . . . . . 176

Figure 3-7 Error log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179

Figure 3-8 Turn off the 8990B . . . . . . . . . . . . . . . . . . . . . . . . . . . 191

Figure 3-9 Unscrew the hard drive . . . . . . . . . . . . . . . . . . . . . . . 192

Figure 3-10 Pull and remove the hard drive from the slot . . . . . . 192

Figure 3-11 Serial number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196

18 Keysight 8990B User’s Guide

List of Tables

Table 1-1 Display outlook description . . . . . . . . . . . . . . . . . . . . .38

Table 2-1 Toolbar menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45

Table 2-2 8990B factory default settings . . . . . . . . . . . . . . . . . .166

Keysight 8990B User’s Guide 19

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20 Keysight 8990B User’s Guide

Keysight 8990B Peak Power Analyzer User’s Guide

1 Introduction

Overview of the 8990B 22 Standard Shipped Items 23 Optional Items 24 Sensor Compatibility 25 Probe Compatibility 26 Front Panel Outlook 27 Side Panel Outlook 33 Rear Panel Outlook 35 Display Outlook 37

This chapter provides a general overview of the 8990B peak power analyzer.

1Introduction

Overview of the 8990B

The 8990B is a peak power analyzer that consists of two RF input channels (1 and 4) and two video input channels (2 and 3). When used with a compatible wideband power sensor, the 8990B is able to measure the dynamic or time-dependent aspects of RF and microwave power. A combination of the 8990B and the N1923/4A wideband power sensor enables the RF pulse rise/fall time measurement of up to 5 ns. The video inputs of the 8990B allow the simultaneous analysis of time-domain control signals.

The 8990B has a frequency range of 50 MHz to 40 GHz and a dynamic power range of –35 dBm to 20 dBm, depending on the wideband power sensor used. The 8990B is capable of measuring peak power, minimum power, average power, peak-to-average power, pulse repetition interval, pulse repetition rate, rise time, fall time, pulse off time, pulse top, pulse base, pulse width, duty cycle, and overshoot. The 8990B also provides internal and external trigger functions.

22 Keysight 8990B User’s Guide

Standard Shipped Items

Verify that you have received the following items with your 8990B. If anything is missing or damaged, contact the nearest Keysight Sales Office.

– 8990B peak power analyzer

–Power cord

–Optical mouse

– Mini keyboard

–Stylus pen

– Two units of 50 Ohm BNC cable

– Keysight 8990B Peak Power Analyzer User’s Guide, English

– Keysight 8990B Peak Power Analyzer Installation Guide, English

– Keysight 8990B Peak Power Analyzer Product Reference CD-ROM

– Keysight IO Libraries Suite CD-ROM

– Certificate of Calibration

Introduction 1

[1]

Standard 8990B options

– Standard hard drive installed (Option 800)

– Removable hard drive installed (Option 801)[

– 8990B with USB host connectivity (Option U01)

– 8990B without USB host connectivity (Option U02)

[1] Only applicable when the default manual configuration, 8990B-ABA is selected.

[2] Select either Option 800 or Option 801

[3] Select either Option U01 or U02

Keysight 8990B User’s Guide 23

[2]

[3]

1Introduction

Optional Items

The following items are available for purchase separately.

– Rack mount kit (Option 1CM, 8U full rack)

– N6921A stacking kit

– N6922A BNC extension cable, male to female

– N6923A BNC adapter, right angle

– N6924A additional hard drive with image

– N6925A storage pouch

– 8990B Programming Guide, English (Option OBF, printed)

– 8990B User’s Guide, English and Programming Guide, English

(Option OBK, printed)

– 8990B Service Guide, English (Option OBW, printed)

– 8990B User’s Guide, Japanese and Programming Guide, English

(Option ABJ, printed)

– 8990B User’s Guide, English (Option ABA, printed)

– N1923A User’s Guide, Japanese (N1923A-ABJ, printed)

– N1923A User’s Guide, English (N1923A-OB1, printed)

– N1923A Service Guide, English (N1923A-OBN, printed)

– N1924A User’s Guide, Japanese (N1924A-ABJ, printed)

– N1924A User’s Guide, English (N1924A-OB1, printed)

– N1924A Service Guide, English (N1924A-OBN, printed)

– Return-to-Keysight Warranty and Service Plan

– Return-to-Keysight Calibration Plan

– ISO 17025 compliant calibration test data (Option 1A7, printed)

– ANSI/NCSL Z540 Certificate of Compliance Calibration (Option A6J, printed)

– Multipulse analysis software, fixed perpetual license (8990B-1FP)

– Multipulse analysis software (N6903A)

24 Keysight 8990B User’s Guide

Sensor Compatibility

NOTE

The 8990B is compatible with the Keysight N1923/4A wideband power sensor. A combination of the 8990B and the N1923/4A wideband power sensor enables the RF pulse rise or fall time measurement of up to 5 ns. The following table lists the frequency range and dynamic power range for each of these sensors:

Introduction 1

Wideband power sensor model

N1923A 50 MHz to 18 GHz

N1924A 50 MHz to 40 GHz

[a] Applicable for frequency of ≥500 MHz.

Frequency range Rise/fall time Dynamic power range

≤

5.5 ns

≤

5.5 ns

The 8990B is also compatible with the Keysight N1921/2A P-Series wideband power sensor. The following table lists the frequency range and dynamic power range for each of these sensors:

P-Series wideband power sensor model

N1921A 50 MHz to 18 GHz

N1922A 50 MHz to 40 GHz

[a] Specification applies only when the Off video band width is selected.

Frequency range Rise/fall time Dynamic power range

≤13 ns

[a]

–35 dBm to +20 dBm

– –35 dBm to +20 dBm (≥500 MHz) – –30 dBm to +20 dBm (50 MHz to 500 MHz)

For further information on these sensors, refer to their respective manuals.

Keysight 8990B User’s Guide 25

1Introduction

NOTE

Probe Compatibility

The 8990B is compatible with the Keysight N2873A passive probe which has a DC-to-500 MHz frequency range and a 10:1 attenuation factor.

The 8990B video input channels are able to support passive probes with analog bandwid th of up to 1 GHz.

26 Keysight 8990B User’s Guide

Front Panel Outlook

This topic briefly describes the functions of the front panel keys, knobs, and connectors.

Introduction 1

Figure 1-1 Front panel outlook

This section is associated with the power switch, probe compensation output, measurement channels, sensor check source, and USB ports.

Item Description

Power on/off Press this key to turn on or off the 8990B

RF input channels Connect to the RF input using the N1921/2/3/4A wideband power sensors

Keysight 8990B User’s Guide 27

1Introduction

Item Description

Video input channels

Probe compensation output

Sensor check source

USB Hosts

Connect to the video input using the N2873A oscilloscope probes or N6922A BNC cable

Performs adjustment of the probe capacitor in order to maximize the band width of the probe.

NOTE: Probe compensation will only be supported in future releases.

Sensor check source for sensor that outputs an RF carrier of 1.05 GHz with a modulating pulse train signal of 1 kHz from a Type-N female connector. The RF level is 0 dBm at the carrier frequency.

Connect to external USB devices. You can connect or disconnect the external USB devices without shutting down or restarting the 8990B.

Figure 1-2 Run Control section

This section is categorized as run controls.

Item Description

Press this key to start or stop a continuous data acquisition

Press this key to make a single data acquisition when the next trigger event occurs

28 Keysight 8990B User’s Guide

Figure 1-3 Horizontal section

This section is associated with horizontal controls as well as zoom, autoscale, touch screen, clear display, and default setup functions.

Item Description

Turn this knob to configure the horizontal scale of the display.

NOTE: Vernier function (fine scaling) will only be supported in future releases.

Introduction 1

Press this key to view a magnified section of the waveform

Turn this knob to configure the horizontal position of the waveform. Push this knob to set the horizontal position to zero.

Press this key to automatically scale the waveform to the optimized display

Press this key to enable or disable the touch screen

Press this key to clear the waveform display. When the 8990B is running in the continuous acquisition mode, this function will clear the current waveform and redraw it.

Other than the waveform, this function also clears the data for measurements, markers, droop, and averaging.

Press this key to return the 8990B to the factory default settings

Keysight 8990B User’s Guide 29

1Introduction

Figure 1-4 Trigger section

This section is categorized as trigger controls.

Item Description

Press this key to set the trigger source to any of the channels or auxiliary. The selected trigger source LED above this key will be illuminated.

Press this key to trigger on a rising or falling edge. The selected slope LED above this key will be illuminated.

Press this key to set the trigger sweep mode to either automatic or triggered. The selected sweep mode LED above this key will be illuminated.

Press this key to access the trigger menu

Turn this knob to configure the trigger level. Push this knob to set the trigger level to 50%.

30 Keysight 8990B User’s Guide

Figure 1-5 Measure section

This section is categorized as measurement and marker controls.

Item Description

Turn this knob to change the position of the marker. Push this knob to select a marker or toggle between two markers.

Press this key to access the marker selection dialog.

Press this key to toggle between the tabs on the multi-purpose pane.

Introduction 1

Press this key to unlock the controls when in remote access mode.

Keysight 8990B User’s Guide 31

1Introduction

Figure 1-6 Vertical section

This section is categorized as vertical controls.

This section has a set of LEDs per channel that indicate the input impedance, coupling, and whether or not bandwidth limit is enabled for the channel.

Item Description

Turn the knob for a particular channel to configure the vertical scale of the display.

NOTE: Vernier function (fine scaling) will only be supported in future releases.

Press this key to turn the display on or off for a particular channel

Turn the knob for a particular channel to configure the vertical offset of the waveform

32 Keysight 8990B User’s Guide

Side Panel Outlook

1 2

3 4

5 6

9 10 11 12

The following connectors and hard drive are available on the side panel. To set up the remote interfaces, refer to the 8990B Installation Guide.

Introduction 1

Figure 1-7 Side panel outlook

No. Item Description

1 Keyboard PS/2 port Allows a keyboard to be plugged in to control the 8990B graphical interface.

The keyboard must be plugged in prior to turning on the 8990B.

2 Mouse PS/2 port Allows a mouse to be plugged in to control the 8990B graphical interface.

The mouse must be plugged in prior to turning on the 8990B.

3 Serial printer port Allows a serial printer to be connected to the 8990B

4 XGA video output Allows an external monitor to be connected to the 8990B

5 DVI video output Allows an external monitor to be connected to the 8990B

Keysight 8990B User’s Guide 33

1Introduction

No. Item Description

6 Removable hard drive Allows the 8990B hard drive to be swapped with another hard drive

7 USB ports Allows external USB devices to be connected to the 8990B.

You can connect or disconnect the external USB devices without shutting down or restarting the 8990B.

8 LAN port Allows the 8990B to be controlled remotely over the LAN interface

9 Microphone port Allows a microphone to be connected to the 8990B

10 Audio line-in port Allows an external audio device to be connected to the 8990B

11 Headphone sound

output port

12 USB Type-B port Allows the 8990B to be controlled remotely over the USB interface

13 AC power inlet Allows the 8990B to be connected to an AC line voltage

Allows a headphone to be connected to the 8990B

34 Keysight 8990B User’s Guide

Rear Panel Outlook

1 2

3 4 5

The following connectors are available on the rear panel.

Introduction 1

Figure 1-8 Rear panel outlook

No. Item Description

1 Auxiliary trigger out Used to provide internal 8990B waveforms for calibration and external triggering

2 10 MHz reference in Used to synchronize the 8990B horizontal timebase system to a reference clock

that you provide. The clock that you provide must meet the following specifications: Level: –2 dBm to 10 dBm Impedance: 50 Ω

Keysight 8990B User’s Guide 35

1Introduction

No. Item Description

3 10 MHz reference out Used to track the external reference input level. The output specifications are as

follows: Level: 4 dBm to ±2 dBm Impedance: 50 Ω

4 Auxiliary trigger in Used as a trigger source for rising edge TTL level triggering only. The input

specifications are as follows: Level: ±5 V Impedance: 50 Ω

5 Trigger out Used to provide TTL compatible logic levels with an output impedance of 50 Ω for

external triggering

36 Keysight 8990B User’s Guide

Display Outlook

1 2

The graphical interface provides access to the configuration and measurement features of the 8990B through an easy-to-use system of menus, toolbars, dialog boxes, icons, and buttons. You can control the graphical interface using the touch screen feature, via connected peripherals such as a mouse or a keyboard, or using the front panel interface (where applicable).

The following section provides a general overview of the graphical interface layout.

Introduction 1

Figure 1-9 Display outlook

Keysight 8990B User’s Guide 37

1Introduction

Tab le 1-1 Display outlook description

No. Description

1 This is the toolbar which provides access to file management, instrument settings, measurement controls, and help

information

2 This is the channel vertical scale control field which allows you to turn on or off the channel, configure the channel

settings, and adjust the vertical scale of the display

3 This is the measurement menu which enables you to select and perform the measurements available. The >> and <<

buttons at the bottom of the menu provide access to the next and previous lists of measurements respectively.

4 This is the acquisition control field which enables you to start or stop a continuous data acquisition or perform a single

data acquisition of the waveform. You can also log and save the measurement data.

5 This is the trigger menu which allows you to configure the trigger settings

6 This is the horizontal (time) scale control and marker field which allows you to configure the timebase settings and

select the A and B markers to apply on the trace

7 This is the display control field which allows you to clear the display and perform averaging and autoscaling on the

waveform

8 This is the multi-purpose pane which enables you to select any of the seven types of views to display: status view,

measurement view, marker view, X-Y position view, droop view, limit test view, and log view

9 This button will appear when remote access is in session. The front panel controls are locked when remote access is

active. Click the Remote button on the screen or press the Local button on the 8990B front panel to unlock the controls.

38 Keysight 8990B User’s Guide

LCD display layout

Marker B label

Trigger line marker

Marker A label

Channel 1 level marker

Channel 2 level marker

Channel 3 level marker

Channel 4 level marker

Introduction 1

Figure 1-10 LCD display layout

Keysight 8990B User’s Guide 39

1Introduction

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40 Keysight 8990B User’s Guide

Keysight 8990B Peak Power Analyzer User’s Guide

2 Using the 8990B

Hiding the Side Menus and Multi-Purpose Pane 43 Enabling or Disabling the Touch Screen 44 Enabling or Disabling the Touch Screen 44 Accessing the Toolbar Menus 45 Turning Channels On or Off 49 Accessing the Channel Setup 51 Adjusting the Vertical Scale and Offset 56 Adjusting the Horizontal Scale and Offset 60 Starting and Stopping Waveform Acquisition 63 Clearing the Waveform Display 66 Equivalent Time Sampling (ETS) 67 Setting the Averaging 71 Enabling Autoscale 73 Accessing the Trigger Setup 75 Setting the Measurement Threshold 79 Saving and Loading Waveform Memories 82 Performing Waveform Math Operations 86 Setting the Frequency-Dependent Offset (FDO) 105 Magnifying a Section of the Waveform Using Zoom 108 Splitting the Waveform Screen 111 Displaying the Complementary Cumulative Distribution Function (CCDF)

Information 113 Accessing the Multipulse Mode 120 Accessing the Display XY Mode 127 Accessing the Multi-Purpose Pane 130 Performing Zeroing and Calibration 151 Sensor Check Source 154 Saving the Screen 156

2 Using the 8990B

This chapter describes the general operation of the 8990B peak power analyzer.

Saving and Restoring 8990B States 157 Logging and Saving the Measurement Data 159 Generating and Saving a Report 161 Secure Erase 164 Restoring the 8990B to Factory Default Settings 165 Configuring the Display Settings 168 Remote Setup 170

42 Keysight 8990B User’s Guide

Hiding the Side Menus and Multi-Purpose Pane

The 8990B allows you to hide the measurement menu, trigger menu, and multi-purpose pane.

1 Select the pin button to hide the menus or multi-purpose pane.

Figure 2-1 Pin button

2 The display outlook with the hidden menus and multi-purpose pane is as

shown in Figure 2-2.

Using the 8990B 2

Figure 2-2 Display outlook with hidden menus and mul ti-purpose pane

Keysight 8990B User’s Guide 43

2 Using the 8990B

Enabling or Disabling the Touch Screen

The 8990B allows you to navigate the graphical interface via touch screen. The touch screen capability is enabled by default.

Use the following procedure to enable or disable the touch screen.

1 To enable or disable the touch screen capability, press in the Horizontal

section of the front panel as shown in Figure 2-3.

Figure 2-3 Touch button in the Horizontal section

2 The LED illuminates white when the touch screen capability is enabled.

44 Keysight 8990B User’s Guide

Using the 8990B 2

Accessing the Toolbar Menus

The toolbar is located at the top of the graphical interface as shown in Figure 2-4.

Figure 2-4 Toolbar on the graphical interface

Select the desired toolbar title to display the drop-down menu. Select an item from the drop-down menu to execute its respective function. The description for each drop-down menu on the toolbar is shown in Table 2-1.

Table 2-1 Toolbar menus

Level 1 menu Level 2 menu Description

File Load Waveform... Load the saved waveform. Refer to “Saving and Loading Waveform

Memories” on page 82 for more information.

Save Waveform... Save the current waveform data. The waveform data is saved as a CSV file.

Refer to “Saving and Loading Waveform Memories” on page 82 for more information.

Save Screen... Save the current graphical interface screen. Refer to “Saving the Screen”

on page 156 for more information.

Save Screen (Printer Friendly) Save the current graphical interface screen in black and white. Refer to

“Saving the Screen” on page 156 for more information.

Restore Saved Setup... Restore a saved 8990B state. Refer to “Saving and Restoring 8990B

States” on page 157 for more information.

Save Current Setup... Save the current 8990B state. Refer to “Saving and Restoring 8990B

States” on page 157 for more information.

Restore Default Setup Reset the 8990B to the factory default settings. Refer to “Restoring the

8990B to Factory Default Settings” on page 165 for more information.

Save Report... Generate and save a report. Refer to “Generating and Saving a Report” on

page 161 for more information.

Exit Exit the 8990B graphical interface

Keysight 8990B User’s Guide 45

2 Using the 8990B

Tab le 2-1 Toolbar menus (continued)

Level 1 menu Level 2 menu Description

Acquisition Run Start waveform acquisition. Refer to “Starting and Stopping Waveform

Acquisition” on page 63 for more information.

Stop Stop waveform acquisition. Refer to “Starting and Stopping Waveform

Acquisition” on page 63 for more information.

Clear Display Clear the waveform display, measurement data, marker information, droop

measurement data, and waveform averaging. Refer to “Clearing the

Waveform Display” on page 66 for more information.

Zoom Magnify a section of the waveform. Refer to “Magnifying a Section of the

Waveform Using Zoom” on page 108 for more information.

CCDF Display the Complementary Cumulative Distribution Function (CCDF)

information for the RF input channels. Refer to “Displaying the

Complementary Cumulative Distribution Function (CCDF) Information” on

page 113 for more information.

Split screen Split the waveform screen to four separate channel screens. Refer to

“Splitting the Waveform Screen” on page 111 for more information.

MultiPulse Access the multipulse mode. Refer to “Accessing the Multipulse Mode” on

page 120 for more information.

Display XY Display the XY Display mode. Refer to “Accessing the Display XY Mode” on

page 127 for more information.

Auto-Scale Scale the waveforms to the optimized display. Refer to “Enabling

Autoscale” on page 73 for more information.

Undo Autoscale Undo the autoscaling. Refer to “Enabling Autoscale” on page 73 for more

information.

Save measurement... Log and save the measurements data. Refer to “Logging and Saving the

Measurement Data” on page 159 for more information.

Setup Channel 1... Configure the channel 1 settings. Refer to “Accessing the Channel Setup”

on page 51 for more information.

Channel 2... Configure the channel 2 settings. Refer to “Accessing the Channel Setup”

on page 51 for more information.

46 Keysight 8990B User’s Guide

Using the 8990B 2

Table 2-1 Toolbar menus (continued)

Level 1 menu Level 2 menu Description

Channel 3... Configure the channel 3 settings. Refer to “Accessing the Channel Setup”

on page 51 for more information.

Channel 4... Configure the channel 4 settings. Refer to “Accessing the Channel Setup”

on page 51 for more information.

Trigger... Configure the trigger settings. Refer to “Accessing the Trigger Setup” on

page 75 for more information.

Acquisition... Configure the ETS acquisition setup. Refer to “Equivalent Time Sampling

(ETS)” on page 67 for more information.

Display Setup Configure the display settings. Refer to “Configuring the Display Settings”

on page 168 for more information.

Measurement Thresholds Configure the measurement threshold settings. Refer to “Setting the

Measurement Threshold” on page 79 for more information.

Waveform Memory Load multiple saved waveform files. You can select a saved waveform to

enable and adjust the horizontal scale and offset. Refer to “Saving and

Loading Waveform Memories” on page 82 for more information.

Waveform Math Perform waveform math operations on a pair of RF input or video input

channels. Refer to “Performing Waveform Math Operations” on page 86 for more information.

Measure Measurement functions Select the desired measurement functions to measure. Refer to

“Measurement view” on page 131 for more information.

Tools Front Panel Test... Verify the 8990B front panel keys and knobs. Refer to “Front Panel Test” on

page 172 for more information.

Limit Test... Set the upper limit and lower limit values, and track the values. Refer to

“Limit test view” on page 145 for more information.

Self Test... Perform instrument self-test on the 8990B. Refer to “Front Panel Test” on

page 172 for more information.

Remote Setup... Display the 8990B remote setup parameters. Refer to “Remote Setup” on

page 170 for more information.

Auto Cal... Configure the sensor auto-calibration settings. Refer to “Performing

Zeroing and Calibration” on page 151 for more information.

Check Source Configure the sensor check source settings. Refer to “Sensor Check

Source” on page 154 for more information.

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2 Using the 8990B

Tab le 2-1 Toolbar menus (continued)

Level 1 menu Level 2 menu Description

Secure Erase... Erase the 8990B setup, FDO tables, and reference memory. Refer to

“Secure Erase” on page 164 for more information.

Toggle 10 MHz Input Enable or disable the 10 MHz reference input for the video input channels.

When the 10 MHz reference input is enabled, the 10MHz Input status is displayed in the Status view. Refer to “Status view” on page 130 for more information.

FDO Set the Frequency-Dependent Offset (FDO) for different frequency points.

Refer to “Setting the Frequency-Dependent Offset (FDO)” on page 105 for more information.

Marker Track the X-axis and Y-axis values, and the delta values between the two

markers. Refer to “Marker view” on page 135 for more information.

Support Documentation Display the 8990B documentation information

Help Display the 8990B help information

Tutorial Video Display the 8990B tutorial video

About Display the 8990B product information

License Display the installed licenses in the 8990B

48 Keysight 8990B User’s Guide

Turning Channels On or Off

NOTE

Channel 1

Channel 2

Channel 3

Channel 4

Channel 1 to channel 4 in the 8990B are color-coded in yellow, green, blue, and red respectively. Turn off the channels that you are not using to simplify the waveform display and increase the display refresh rate. The 8990B channels can be turned on from the Vertical section on the front panel or the graphical interface.

Use the following procedures to turn on or off the channels.

For RF input channel 1 and 4, the channels can only be turned on when a wideband power sensor is connected.

Front panel

1 Press the desired channel number button in the Vertical section to turn on the

channel as shown in Figure 2-5.

Using the 8990B 2

Figure 2-5 Channel number buttons in the Vertical section

Keysight 8990B User’s Guide 49

2 Using the 8990B

NOTE

2 The channel number button LED illuminates when it is turned on.

3 Press the channel number button again to turn off the channel.

Graphical interface

1 Select the desired channel number button on the graphical interface to turn on

Figure 2-6 Channel number button on the graphical interface

2 The channel number button darkens when it is turned on.

3 Select the channel number button again to turn off the channel.

The channels can also be turned on or off from the Channel Setup dialog. For more information on the Channel Setup dialog, refer to “Accessing the Channel

Setup” on page 51.

the channel as shown in Figure 2-6.

50 Keysight 8990B User’s Guide

Accessing the Channel Setup

The Channel Setup dialog allows you to configure the settings for each channel.

For RF input channels, you can turn on or off the channel, and set the power display type, vertical scale, frequency, reference style, reference level, external loss, bandwidth, and perform zeroing and calibration of the sensor from the Channel Setup dialog.

For video input channels, you can turn on or off the channel, and set the vertical scale and offset, input coupling, input impedance, and probe attenuation ratio.

You can select the channel number button at the top of the Channel Setup dialog to access the setup for the desired channel.

Use the following procedure to access the channel setup.

1 Select the vertical scale area for the desired channel on the graphical interface

as shown in Figure 2-7.

Using the 8990B 2

Figure 2-7 Vertical scale area on the graphical interface

Keysight 8990B User’s Guide 51

2 Using the 8990B

2 For the RF input channel, the Channel Setup dialog is displayed as shown in

Figure 2-8.

Figure 2-8 RF input Channel Setup dialog

Power Display

Select either Log or Linear as the power display type for the RF input channel signal.

Scale

Set the vertical scale value for the RF input channel. Refer to “Adjusting the

Vertical Scale and Offset” on page 56 for more information.

Frequency

Setting the frequency of the RF input channel signal. This will optimize the accuracy and minimize the measurement uncertainty, especially when making comparative measurements between signals.

52 Keysight 8990B User’s Guide

Using the 8990B 2

Ref Style

Select among TOP, CENTER, or BOTTOM as the reference style.

Reference Level

Set the reference level value for the RF input channel. Refer to “Adjusting the

Vertical Scale and Offset” on page 56 for more information.

Ext Loss

Set the external loss for the RF input channel signal caused by a coupler, amplifier, or cable.

Bandwid th

Select among OFF, LOW, MEDIUM, or HIGH for the bandwidth. The bandwidth set will minimize the effect of any visible noise in the signal.

Time Comp

Set the time compensation value for the RF input channel. The time compensation set will overcome any timing delay in the cable. The step size for the time compensation increment (>) and decrement (<) buttons is set to a time scale of 1/500.

Zero & Cal, Cal, and Zero

Perform zeroing and calibration on the connected power sensor. Refer to

“Performing Zeroing and Calibration” on page 151 for more information.

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2 Using the 8990B

3 For the video input channel, the Channel Setup dialog is displayed as shown in

Figure 2-9.

Figure 2-9 Video input Channel Setup dialog

Scale

Set the vertical scale value for the video input channel. Refer to “Adjusting the

Vertical Scale and Offset” on page 56 for more information.

Offset

Set the vertical offset value for the video input channel. Refer to “Adjusting the

Vertical Scale and Offset” on page 56 for more information.

Coupling

Select either DC or AC coupling for the video input channel signal.

54 Keysight 8990B User’s Guide

Using the 8990B 2

Input

Select either 50 Ω or 1 MΩ as the input impedance for the video input channel signal.

Probe

View the probe information used at the video channel.

Time Comp

Set the time compensation value for the video input channel. The time compensation set will overcome any timing delay in the cable.

4 After you have completed the channel setup, select the close button at top

right corner of the dialog or select Close to close the Channel Setup dialog.

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2 Using the 8990B

Vertical offset knobs

Vertical scale knobs

Adjusting the Vertical Scale and Offset

Adjusting the vertical scale increases or decreases the number of watts per division (W/div) or decibels per division (dB/div) for RF input channels and the number of volts per division (V/div) for video input channels. Adjusting the vertical offset moves the waveform towards the top or bottom of the display. The vertical scale and offset can be adjusted from the Vertical section on the front panel or the graphical interface.

Use the following procedures to adjust the vertical scale and offset.

Front panel

1 To adjust the vertical scale, turn the vertical scale knob of the desired channel

in the Vertical section as shown in Figure 2-10.

Figure 2-10 Vertical scale and offset knobs in the Vertical section

2 Turn the vertical scale knob clockwise to decrease the vertical scale value or

counter-clockwise to increase the vertical scale value.

3 To adjust the vertical offset, turn the vertical offset knob of the desired channel

in the Vertical section as shown in Figure 2-10.

4 Turn the vertical offset knob clockwise to move the waveform towards the top

of the display or counter-clockwise to move the waveform towards the bottom of the display.

56 Keysight 8990B User’s Guide

Using the 8990B 2

Vertical scale field

Reference level field

Graphical interface

1 Select the vertical scale area of the desired channel at the top of the graphical

interface to access the Channel Setup dialog as shown in Figure 2-7.

2 For RF input channels, select the vertical scale field on the Channel Setup

dialog to adjust the vertical scale as shown in Figure 2-11.

Figure 2-11 Vertical scale and reference level field for the RF input channel

3 The vertical offset in the RF input channel is referred to as top reference level,

center reference level, or bottom reference level depending on the desired reference style. Select the reference level field on the Channel Setup dialog to adjust the reference level as shown in Figure 2-11.

4 For video input channels, select the vertical scale field on the Channel Setup

dialog to adjust the vertical scale as shown in Figure 2-12.

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2 Using the 8990B

Vertical scale field

Vertical offset field

Figure 2-12 Vertical scale and offset field for the video input channel

5 Select the vertical offset field on the Channel Setup dialog to adjust the

vertical offset as shown in Figure 2-12.

6 The vertical scale keypad dialogs are displayed as shown in Figure 2-13.

Figure 2-13 Vertical scale keypad dialogs

7 Set the desired value and select OK to confirm.

58 Keysight 8990B User’s Guide

Using the 8990B 2

8 You can also adjust the vertical scale using + and – as shown in Figure 2-14.

Figure 2-14 Vertical scale adjustment on the graphical interface

9 The reference level keypad dialog for the RF input channel is displayed as

shown in Figure 2-15.

Figure 2-15 Reference level keypad dialog for the RF input channel

10 The vertical offset keypad dialog for the video input channel is displayed as

shown in Figure 2-16.

Figure 2-16 Vertical offset keypad dialog for the video input channel

11 Set the desired value and select OK to confirm.

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2 Using the 8990B

NOTE

Horizontal offset knob

Horizontal scale knob

Adjusting the Horizontal Scale and Offset

Adjusting the horizontal scale increases or decreases the number of seconds per division (s/div). Adjusting the horizontal offset moves the waveform towards the left or right of the display. The horizontal scale and offset can be adjusted from the Horizontal section on the front panel or the graphical interface.

Negative horizontal offset will reduce the sampling rate and cause trace distortion. It is recommended to set the offset relatively close to the horizontal scale for optimum performance.

Use the following procedures to adjust the horizontal scale and offset.

Front panel

1 To adjust the horizontal scale, turn in the Horizontal section as shown in

Figure 2-17.

2 Turn clockwise to decrease the horizontal scale value or

counter-clockwise to increase the horizontal scale.

3 To adjust the horizontal offset, turn in the Horizontal section as shown in

Figure 2-17.

4 Turn clockwise to move the waveform towards the right of the display or

counter-clockwise to move the waveform towards the left of the display.

Figure 2-17 Horizontal scale and offset knobs in the Horizontal section

5 To set the offset to zero, push .

60 Keysight 8990B User’s Guide

Using the 8990B 2

NOTE

The horizontal scale knob is adjustable in factors of 1, 2, and 5.

Graphical interface

1 To adjust the horizontal scale, select the horizontal scale area on the graphical

interface as shown in Figure 2-18.

Figure 2-18 Horizontal scale on the graphical interface

2 The horizontal scale keypad dialog is displayed as shown in Figure 2-19.

Figure 2-19 Horizontal scale keypad dialog

3 Set the desired value and select OK to confirm.

4 You can also adjust the horizontal scale using + and – as shown in Figure 2-18.

5 To adjust the horizontal offset, select the horizontal offset area on the

graphical interface as shown in Figure 2-20.

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2 Using the 8990B

NOTE

Figure 2-20 Horizontal offset on the graphical interface

6 The horizontal offset keypad dialog is displayed as shown in Figure 2-21.

Figure 2-21 Horizontal offset keypad dialog

7 Set the desired value and select OK to confirm.

8 You can also adjust the horizontal offset using << and >>, or set the offset to

zero using 0 as shown in Figure 2-20.

The step size for the horizontal offset buttons is set to a time scale of 1/50.

62 Keysight 8990B User’s Guide

Starting and Stopping Waveform Acquisition

The 8990B allows you to perform a continuous or single data acquisition of the waveform from the Run Control section on the front panel or the graphical interface.

Continuous waveform acquisition

Use the following procedures to perform continuous waveform acquisition.

Front panel

1 Press in the Run Control section as shown in Figure 2-22 to start a

continuous data acquisition of the waveform.

Using the 8990B 2

Figure 2-22 Run/Stop button in the Run Control section

2 The LED illuminates green when the continuous data acquisition is

running.

3 To stop the continuous data acquisition, press again in the Run

Control section. The LED illuminates red when the acquisition is stopped.

Keysight 8990B User’s Guide 63

2 Using the 8990B

Stop butto

Start butto

Graphical interface

1 Select the start or stop button on the bottom left of the graphical interface to

Figure 2-23 Start and stop buttons on the graphical interface

2 The start or stop button is grayed out when you start or stop the continuous

Single waveform acquisition

Use the following procedures to perform single waveform acquisition.

start or stop a continuous data acquisition of the waveform respectively as shown in Figure 2-23.

waveform acquisition respectively.

Front panel

1 Press in the Run Control section as shown in Figure 2-24 to perform a

single data acquisition of the waveform.

Figure 2-24 Single waveform acquisition button in the Run Control section

2 The LED illuminates yellow when the single data acquisition is

running.

64 Keysight 8990B User’s Guide

Using the 8990B 2

Single button

Graphical interface

Select the Single button on the bottom left of the graphical interface to perform a single data acquisition of the waveform as shown in Figure 2-25.

Figure 2-25 Single waveform acquisition button on the graphical interface

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2 Using the 8990B

NOTE

Clearing the Waveform Display

Clearing the waveform display will clear the measurement data, marker information, droop measurement data, and waveform averaging. The 8990B allows you to clear the waveform display from the Horizontal section on the front panel or the graphical interface.

Use the following procedures to clear the waveform display.

– When the 8990B is running in a continuous acquisition mode, the Clear Display

function clears the current waveform and redraws it.

– Waveform memory will not be cleared when the Clear Display function is used.

Front panel

Press in the Horizontal section to clear the waveform display as shown in

Figure 2-26.

Figure 2-26 Clear Display button in the Horizontal section

Graphical interface

Select Clear on the bottom right of the graphical interface to clear the waveform display as shown in Figure 2-27.

Figure 2-27 Clear button on the graphical interface

66 Keysight 8990B User’s Guide

Equivalent Time Sampling (ETS)

The ETS function in the 8990B is used to increase the effective sampling rate for high bandwidth repetitive signals detection. ETS is implemented by accumulating the samples of the input signals at slightly different starting points and accumulating them over several cycles to construct a complete waveform trace line.

The ETS function auto-ETS is enabled by default. You can enable or disable auto-ETS from the Acquisition Setup dialog. When auto-ETS is enabled, the ETS function is automatically turned on when the horizontal scale is less than the ETS threshold. The ETS threshold can be set to 500 ns, 1 μs, 2 μs, 5 μs, or 10 μs. The default ETS threshold is 500 ns. When auto-ETS is disabled, the ETS function will not be turned on at all.

Use the following procedure to enable the auto-ETS function.

1 Select Setup > Acquisitions... on the toolbar as shown in Figure 2-28.

Using the 8990B 2

Figure 2-28 Acquisition selection in the Setup menu

Keysight 8990B User’s Guide 67

2 Using the 8990B

2 The Acquisition Setup dialog is displayed as shown in Figure 2-29. Select the

Auto check box to enable the auto-ETS feature and select the desired ETS

threshold. Select the (Sin x)/x Interpolation check box to allow 1 GHz analog bandwidth verification.

Figure 2-29 Acquisition Setup d ialog

3 The ETS status is displayed in the Status view as shown in Figure 2-30. For

more information on the Status view, refer to “Status view” on page 130.

Figure 2-30 ETS status in the status view

68 Keysight 8990B User’s Guide

Using the 8990B 2

NOTE

For a complete waveform trace, use continuous waveform acquisition. When single waveform acquisition is used, the waveform trace will not be drawn as the

ETS function trace is not completeled. Press continuously to allow the ETS function to complete the trace.

For more information on the continuous and single waveform acquisition, refer to

“Starting and Stopping Waveform Acquisition” on page 63.

The ETS function is not supported in Auto trigger mode. Trigger mode will be set to Triggered when ETS is enabled.

– When the ETS function is enabled, the allowable horizontal offset settings is

limited, depending on the timebase settings. This limitation is to avoid any under-sampling situation that will cause trace distortion.

– In the AUX trigger mode, pressing the Single button will ensure that ETS

acquisition is completed before returning the trace. You will need to send multiple Single commands or press the Single button to get the completed ETS trace.

When the ETS function is acquiring data to complete the waveform trace, the ETS status is displayed as shown in Figure 2-31.

Keysight 8990B User’s Guide 69

2 Using the 8990B

Figure 2-31 ETS acquiring data status in the status view

70 Keysight 8990B User’s Guide

Setting the Averaging

NOTE

Averaging uses a digital filter to average repetitions of a triggered signal. The average of a number of acquisitions is calculated to smoothen the displayed trace and reduce apparent noise.

The averaging counts can be in a range of 2 to 2048, in multiples of 2 the value of a measurement average count reduces the noise but increases the time required to make the measurement. The averaging count values are predefined to 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, and 2048.

If averaging is turned on in the ETS mode, averaging will only be performed after the ETS operation is completed.

Use the following procedure to set the averaging.

1 Select Avg on the bottom right of the graphical interface to enable the

waveform averaging as shown in Figure 2-32.

Using the 8990B 2

. Increasing

Figure 2-32 Averaging button on the graphical interface

2 The Averaging dialog is displayed as shown in Figure 2-33.

Figure 2-33 Averaging dialog

3 Select the Enable check box to turn on the averaging.

4 To change the average count, select the Count field on the Averaging dialog to

display the count selection as shown in Figure 2-34.

Keysight 8990B User’s Guide 71

2 Using the 8990B

NOTE

Figure 2-34 Averaging count selection on the Averaging dialog

5 Select the desired averaging count and select Close.

6 The waveform averaging status is displayed in the Status view as shown in

Figure 2-35.

Figure 2-35 Waveform averaging status in the status view

For more information on the Status view, refer to “Status view” on page 130.

72 Keysight 8990B User’s Guide

Enabling Autoscale

Autoscale feature evaluates all input signals and sets the correct conditions to best display the signals. The 8990B will automatically configure the X-axis and Y-axis values. For the X-axis, the horizontal scale is scaled with reference to the higher priority channel in the order of channel 4, 3, 2, and 1 respectively.

A notification dialog is displayed when autoscaling is running. Once autoscaling has completed, the autoscale dialog is displayed. You can undo the autoscaling or close the dialog. Autoscaling can be performed from the front panel or the graphical interface.

Use the following procedures to enable the autoscale.

Front panel

To perform autoscaling, press in the Horizontal section as shown in

Figure 2-36.

Using the 8990B 2

Figure 2-36 Autoscale button in the Horizontal section

Graphical interface

1 Select Auto-Scale on the bottom right of the graphical interface as shown in

Figure 2-37.

Figure 2-37 Autoscale button on the graphical interface

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2 Using the 8990B

NOTE

2 When the autoscale function is running, a notification dialog is displayed as

Figure 2-38 Autoscale notification dialog

Autoscaling may take a few seconds to complete.

3 Once autoscaling has completed, the Undo AutoScale? dialog is displayed as

shown in Figure 2-38.

shown in Figure 2-39.

Figure 2-39 Undo AutoScale? dialog

4 Select Undo to undo the new settings, or select Close to close the Undo

AutoScale? dialog. You can also undo autoscale from the Acquisition menu on the toolbar.

The Undo AutoScale? dialog will automatically close after 5 seconds.

74 Keysight 8990B User’s Guide

Accessing the Trigger Setup

The trigger source can be set to channel 1, 2, 3, or 4, or AUX. For the channel trigger source, you can set the trigger sweep, slope, level, and holdoff. For the AUX trigger source, the trigger level setting is disabled. The 8990B allows you to configure the trigger settings from the Trigger section on the front panel and the Trigger menu on the graphical interface.

Use the following procedures to access the trigger setup.

Front panel

1 To configure the trigger settings, use the individual buttons and knob in

the Trigger section, or press to access the Trigger Setup dialog as shown in Figure 2-40.

Using the 8990B 2

Figure 2-40 Menu button in the Trigger section

2 For more information on the Trigger Setup dialog, refer to Graphical interface.

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2 Using the 8990B

Trigger menu

Trigger holdoff

Trigger level

Trigger slope

Sweep mode

Trigger source

Graphical interface

1 To configure the trigger settings, select the individual buttons on the Trigger

menu to toggle between selections or access the menu dialog as shown in

Figure 2-41.

Figure 2-41 Trigger menu on the graphical interface

Source

Select either channel or AUX as the trigger source. The channel selection depends on the connected sensors or probes.

Sweep

Select either auto trigger sweep mode, or normal trigger sweep mode.

Slope

Set the trigger point to the positive slope or negative slope of the signal.

76 Keysight 8990B User’s Guide

Using the 8990B 2

Level

Set the trigger level value to determine the position of the trigger point.

Holdoff

Set the trigger holdoff value to keep the trigger from occuring until after a certain amount of time has passed since the last trigger.

Display the trigger setup dialog.

2 The Trigger Setup dialog is displayed as shown in Figure 2-42.

Figure 2-42 Trigger Setup dialog

3 You can set the trigger mode, trigger sweep mode, trigger count, trigger

source, trigger level, and trigger slope from the Trigger Setup dialog. Trigger count is only applicable when the trigger mode is By Event. Trigger On, T1, and T2 are only applicable when the trigger mode is Pulse Width.

4 Select Cond itioning... on the Trigger Setup dialog to display the Trigger

Conditioning dialog as shown in Figure 2-43.

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2 Using the 8990B

NOTE

Figure 2-43 Trigger Cond itioning d ialog

5 You can set the trigger holdoff, impedence, hysteresis, and enable or disable

Fast Trigger

Fast Trigger is essentially a triggering mode where the 8990B sends out a trigger signal whenever the input RF signal crosses the trigger threshold. This is useful for application that requires fast trigger response. When Fast Trigger is disabled, the trigger out is sent only for every capture.

the fast trigger and trigger output.

Trigger out signal

The behaviors of the trigger out signal with different channel source are listed as follows.

RF input channel 1/4 as the trigger source.

– With fast trigger on, the trigger output pulse train resembles the RF input

channel. The trigger output varies according to the RF input pulse with PRF less than 1 MHz.

– Fast Trigger is essentially a triggering mode where the 8990B sends out a

trigger signal whenever the RF input signal crosses the trigger threshold. This is useful for application that requires fast trigger response. When Fast Trigger is disabled, the trigger out is sent only for every capture.

– With fast trigger off, the trigger output pulse is 1 μs pulse/capture.

Video input channel 2/3 as the trigger source with a sensor connected.

– The trigger output pulse is 1 μs pulse/capture.

Video input channel 2/3 as the trigger source without any sensor connected.

– The trigger output pulse is 25 ns pulse/capture.

78 Keysight 8990B User’s Guide

Setting the Measurement Threshold

NOTE

The measurement thresholds setting customizes the measurement parameters which are amplitude sensitive such as rise time, fall time, and pulse width. The threshold setting enables you to distinguish a valid measurement from a questionable measurement. The default threshold is 0%.

When a threshold is set, the time-related measurement result will be prefixed with a question mark, ?, if it falls below the threshold value. This is useful to distinguish an invalid measurement as a result of over zooming into a measured pulse top or pulse base.

The measurement result will return a question mark if the product of the pulse top and pulse base is lower than the threshold set.

If the vertical scale is in dB/div (log power display), the calculation is as follows.

10Log(Pulse top (W) / |Pulse base (W)|) < Threshold × Vertical scale

If the vertical scale is in W/div (linear power display), the calculation is as follows.

Using the 8990B 2

(Pulse top – Pulse base) < Threshold × Vertical scale

For example,

Pulse top: 0 dBm (1 mW) Pulse base: –69 dBm (0 W) Vertical scale: 12 dB Threshold: 50%

10Log (1 mW/0 mW) < 50% × 12 dB 0 dB < 6 dB (invalid measurement)

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2 Using the 8990B

Use the following procedure to set the measurement threshold.

1 Select Setup > Measurement Thresholds on the toolbar as shown in

Figure 2-44 Measurement Thresholds selection in the Setup menu

Figure 2-44.

2 The Measurement Thresholds dialog is displayed as shown in Figure 2-45 to

allow you to configure the threshold settings for each channel.

Figure 2-45 Measurement Thresholds dialog

Source

Set the measurement threshold source to channel 1, 2, 3, or 4.

80 Keysight 8990B User’s Guide

Using the 8990B 2

Thresholds

Set the measurement threshold value in percentage.

Trace Ref Lv 1 and 2 (%)

Use in the calculation of transition durations and occurrences.

Pulse Duration Ref Lvl (%)

Allow pulse duration measurements between non-standard reference levels.

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2 Using the 8990B

Saving and Loading Waveform Memories

The 8990B allows you to save and load the waveform memories.

Use the following procedures to save and load waveform memories.

Saving waveform memories

1 Select File > Save Waveform... on the toolbar to save the current 8990B

waveform data as a *.csv file as shown in Figure 2-46.

Figure 2-46 Save Waveform... selection in the File menu

2 The Save Waveform dialog is displayed. You can select the input channel to be

saved by selecting Waveform Source to display the input channel list.

3 Select Keyboard on the Save Waveform dialog to display the on-screen

keyboard as shown in Figure 2-52. This is useful when there is no keyboard connected to the 8990B.

82 Keysight 8990B User’s Guide

Loading waveform memories

Select File > Load Waveform... on the toolbar to load a *.csv waveform data file as shown in Figure 2-47.

Figure 2-47 Load Waveform... selection in the File menu

You can also set four waveform memories and load the waveform data from the channels, waveform memories, or a CSV file from the Waveform Memory dialog.

Use the following procedure to configure the waveform memories.

1 Select Setup > Waveform Memory on the toolbar as shown in Figure 2-48.

Using the 8990B 2

Figure 2-48 Waveform memory selection in the Setup menu

Keysight 8990B User’s Guide 83

2 Using the 8990B

2 The Waveform Memory dialog is displayed as shown in Figure 2-49.

Figure 2-49 Waveform Memory dialog

3 Select the On check box to enable the waveform memory. You can set the

4 Select Load From Waveform to load the waveform from channel 1 to 4 or

vertical scale and offset. Select the m1, m2, m3, or m4 tab to toggle among the four available waveform memories.

waveform memory as shown in Figure 2-50. The waveform memory selection is only available if the waveform memory is enabled.

Figure 2-50 Load from waveform selection

5 Select Load From File to load the waveform from a CSV file.

6 The Load Waveform dialog is displayed as shown in Figure 2-51. You can

select the waveform memory for the waveform data file to load into by selecting the Load to memory to display the waveform memory list.

84 Keysight 8990B User’s Guide

Using the 8990B 2

Figure 2-51 Load waveform from file

7 Select Keyboard on the Load Waveform dialog to display the on-screen

keyboard as shown in Figure 2-52. This is useful when there is no keyboard connected to the 8990B.

Figure 2-52 On-screen keyboard

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2 Using the 8990B

Performing Waveform Math Operations

The 8990B allows you to perform math operations on a pair of channels with the same measurement unit.

Use the following procedure to perform waveform math operations.

1 Select Setup > Waveform Math on the toolbar as shown in Figure 2-53.

Figure 2-53 Waveform Math selection in the Setup menu

2 The Waveform Math dialog is displayed as shown in Figure 2-54 to allow you

to select the channel source and the type of math operation to perform. The available math operations are Add, Averaging, Common mode, Divide, Invert, Magnify, Multiply, Power-added efficiency, Power-added efficiency 2, Subtract, Square, and Square Root.

3 Denominator clipping is only available for math operations that involve division

such as Divide, Power-added efficiency, and Power-added efficiency 2. Displaying the trace in percentage settings are only applicable for Power-added efficiency and Power-added efficiency 2 math operations.

4 Select the On check box to display the desired math operation result.

86 Keysight 8990B User’s Guide

Using the 8990B 2

Figure 2-54 Waveform Math dialog

5 You can select the Function 1, Function 2, Function 3, or Function 4 button to

access the math operation setup for the desired math operation function. You may choose to display either one or both of the math operation function.

6 The resultant trace waveform of the math operation is displayed on the display

layout in white or green depending on the math operation function used.

7 An example of a resultant trace waveform is displayed as shown in

Figure 2-55.

Figure 2-55 Resultant trace waveform of the math operation

Keysight 8990B User’s Guide 87

2 Using the 8990B

NOTE

Add

The add math operation adds source 1 and source 2 trace values, point by point.

– If the source(s) input is in the log scale, it will be converted to the linear scale

– If the trace length between the channels is not equal, the waveform math

– If the number of trace points is not equal, the waveform math operation will

to perform the add math operation. The resultant trace is then converted back to dBm.

operation will find the shortest trace between the sources and shrink other traces to an equal length.

add trace points by using the PCHIP method.

Figure 2-56 Add

88 Keysight 8990B User’s Guide

Averaging

The 8990B allows you to perform the Averaging math operation that acquires the waveform data from several acquisitions and averages the traces. The higher the average count is, the less impact each new waveform has on the cumulativeaveraged waveform. It is different with video averaging as it performs only on a single channel.

Using the 8990B 2

Figure 2-57 Averaging

Setting the averaging math operation

1 Select Average at the Waveform Math dialog as shown in Figure 2-57.

2 When the waveform math is enabled, the elapsed average count will start to

update, showing the number of waveforms that is acquired.

3 The example in Figure 2-57 acquires 10 traces from channel 1 and averages

the traces point by point. It calculates the average of each data point. After the elapsed average count is reached, the previously acquired trace will be removed and replaced with a newly acquired trace.

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2 Using the 8990B

NOTE

Common mode

The common mode math operation is used to look for the common mode component of the differential waveforms. This operation will add source 1 and source 2 trace values and divides the value by two, point by point.

– If the source(s) input is in the log scale, it will be converted to the linear scale

– If the trace length between the channels is not equal, the waveform math

– If the number of trace points is not equal, the waveform math operation will

to perform the common mode math operation. The resultant trace is then converted back to dBm.

operation will find the shortest trace between the sources and shrink other traces to an equal length.

add trace points by using the PCHIP method.

Figure 2-58 Common Mode

90 Keysight 8990B User’s Guide

Divide

NOTE

Using the 8990B 2

The divide math operation divides source 1 and source 2 trace values, point by point.

– If the source(s) input is in the log scale, it will be converted to the linear scale

to perform the divide math operation. The resultant trace is then converted back to dB.

– If the trace length between the channels is not equal, the waveform math

operation will find the shortest trace between the sources and shrink the other trace to an equal length.

– If the number of trace points is not equal, the waveform math operation will

add trace points by using the PCHIP method.

Figure 2-59 Divide

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2 Using the 8990B

Invert

The invert math operation inverts the sign of the waveform trace values, point by point.

Figure 2-60 Invert

92 Keysight 8990B User’s Guide

Magnify

Using the 8990B 2

The magnify math operation allows you to magnify or reduce the source 1 waveform in vertical directions. This operation is performed on an acquired waveform. Therefore, the resolution is the same as the original acquisition no matter how large the waveform is magnified.

Figure 2-61 Magnify

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2 Using the 8990B

NOTE

Multiply

The multiply math operation multiplies source 1 and source 2 trace values, point by point.

– If the source(s) input is in the log scale, it will be converted to the linear scale

– If the trace length between the channels is not equal, the waveform math

– If the number of trace points is not equal, the waveform math operation will

to perform the multiply math operation. The resultant trace will have the undefined (UDF) unit.

operation will find the shortest trace between the sources and shrink other traces to an equal length.

add trace points by using the PCHIP method.

Figure 2-62 Multiply

94 Keysight 8990B User’s Guide

Power-added efficiency

Power-added efficiency (in %) P

RFoutPRFin

–()PDC⁄[]100%×=

RFoutPRFin

–()V

DCIDC

–()⁄[]100%×=

NOTE

The 8990B allows you to perform power-added efficiency measurements. Power-added efficiency is the measure of the power conversion efficiency of the power amplifiers. The formula for power-added efficiency is as follows:

= Power in watts, which can be set to RF input channel 1 or 4

RFout

= Power in watts, which can be set to RF input channel 1 or 4

RFin

= VDC × I

VDC = Voltage supplied, which can be set to video input channel 2 or 3

IDC = Current supplied, which can be transduce voltage from video input channel 2 or 3

Using the 8990B 2

For example,

IDC = Voltage across (V)/Resistance (Ω) = (1/R) video input channel 2 or 3

– If the amplifier gain is more than 30 dB, the nominator can be set to a single

RF input channel.

– The power-added efficiency result is an absolute and non-negative value.

– The denominator P

must be a real and non-zero value.

– The dBm and power conversion formula is 10 × log (power/1 mW)

– If the trace lengths among the channels are not equal, the waveform math

operation will find the shortest trace among the sources and shrink the other traces to an equal length.

– If the number of trace points is not equal, the waveform math operation will

add trace points by using the PCHIP method.

– If the source(s) input is in the log scale, it will be converted to the linear scale

to perform the power-added efficiency measurement.

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2 Using the 8990B

Setting the power-added efficiency measurement

1 Select Power-added efficiency at the Waveform Math dialog as shown in

Figure 2-63.

Figure 2-63 Power-added efficiency

2 Select the On check box to display the power-added efficiency measurement

result.

3 Compare the setting at the Waveform Math dialog with the power-added

efficiency formula.

Pgain = Channel 1 = P

RFout

– P

RFin

Vdc = 10 × Channel 2

Idc = (1/R) Channel 3 = 0.02 × Channel 3

96 Keysight 8990B User’s Guide

Using the 8990B 2

4 Toggle the X button to select between the multiplication symbol (x) or division

symbol (/) as the symbol type. If the multiplication symbol (x) is used, the constant value sent through SCPI will be updated in the text box accordingly. If the division symbol (/) is used, the constant value sent through SCPI will be displayed as 1/(constant value) in the text box.

Figure 2-64 Power-added efficiency with division symbol (/)

5 The calculated power-added efficiency measurement result is in %.

6 Unselect the Display trace in percentage check box to display the result in

ratio.

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2 Using the 8990B

Setting the power-added efficiency 2 measurement

1 Select Power-added efficiency 2 at the Waveform Math dialog as shown in

Figure 2-65.

Figure 2-65 Power-added efficiency 2 with multiplication symbol (x)

2 Select the On check box to display the power-added efficiency measurement

result.

3 Compare the setting at the Waveform Math dialog with the power-added

efficiency formula.

Pout = Channel 1 = P

Pin = Channel 4 = P

RFout

RFin

Vdc = 10 × Channel 2

Idc = (1/R) Channel 3 = 0.02 × Channel 3

98 Keysight 8990B User’s Guide

Using the 8990B 2

4 Toggle the X button to select between the multiplication symbol (x) or division

Figure 2-66 Power-added efficiency 2 with division symbol (/)

5 The calculated power-added efficiency measurement result is in %.

6 Unselect the Display trace in percentage check box to display the result in

ratio.

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2 Using the 8990B

Setting the power-added efficiency 3 measurement

1 Select Power-added efficiency 3 at the Waveform Math dialog as shown in

Figure 2-67.

Figure 2-67 Power-added efficiency 3 with multiplication symbol (x)

2 Select the On check box to display the power-added efficiency measurement

result.

3 Compare the setting at the Waveform Math dialog with the power-added

efficiency formula.

Pout = Channel 1 = P

Pin = Channel 4 = P

RFout

RFin

(Vdc × Idc)1 = Channel 2 × 10 × 1

(Vdc × Idc)

= Channel 3 × 0.02 × 1

100 Keysight 8990B User’s Guide

Keysight Technologies 8990B User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Safety Symbols

Safety Considerations

Environmental Conditions

Regulatory Markings

Waste Electrical and Electronic Equipment (WEEE) Directive 2002/96/EC

Product category:

Table of Contents

List of Figures

List of Tables

1 Introduction

Overview of the 8990B

Standard Shipped Items

Standard 8990B options

Optional Items

Sensor Compatibility

Probe Compatibility

Front Panel Outlook

Side Panel Outlook

Rear Panel Outlook

Display Outlook

LCD display layout

2 Using the 8990B

Hiding the Side Menus and Multi-Purpose Pane

Enabling or Disabling the Touch Screen

Accessing the Toolbar Menus

Turning Channels On or Off

Accessing the Channel Setup

Adjusting the Vertical Scale and Offset

Adjusting the Horizontal Scale and Offset

Starting and Stopping Waveform Acquisition

Continuous waveform acquisition

Single waveform acquisition

Clearing the Waveform Display

Equivalent Time Sampling (ETS)

Setting the Averaging

Enabling Autoscale

Accessing the Trigger Setup

Setting the Measurement Threshold

Saving and Loading Waveform Memories

Saving waveform memories

Loading waveform memories

Performing Waveform Math Operations

Averaging

Common mode

Divide

Invert

Magnify

Multiply

Power-added efficiency