Used Agilent Agilent Used N2002A Manual

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Keysight N2002A Noise Source Test Set

User’s Guide

Notices

No part of this manual may be 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, Inc. as governed by United States and international copyright laws.

Trademark Acknowledgments

Manual Part Number

N2002-90003

Edition

Edition 1, March 2015

Printed in USA/Malaysia

Published By: Keysight Technologies 1400 Fountaingrove Parkway Santa Rosa, CA 95403

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 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 WILL CONTROL.

Technology Licenses

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

Restricted Rights Legend

U.S. Government 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 the Software to U.S. government customers under its standard commercial license

a. 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..

Safety Notices

CAUTION

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.

WARNING

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.

iii

General Safety Information

This instrument has been designed and tested in accordance with IEC Publication 61010-1+A1+A2:1992 Safety requirements for Electrical Equipment for Measurement, Control and Laboratory Use and has been supplied in a safe condition.

The instruction documentation contains information and warnings which must be followed by the user to ensure safe operation and to maintain the instrument in a safe condition.

WARNING No operator serviceable parts inside, refer servicing to service trained

personnel.

WARNING If this instrument is not used as specified, the protection provided by the equipment could be

impaired. This instrument must be used in a normal condition (in which all means of protection are intact only).

CAUTION This instrument is designed for use in Installation Category I and Pollution Degree 2

as per IEC 61010 and 60664 respectively.

NOTE This product does not contain an operator replaceable fuse. Disregard the marking

referring to the '~ Line Fuse'. This is not a mains operated unit.

Safety Symbols

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

The Instruction Documentation Symbol. The product is marked with this symbol when it is necessary for the user to refer to the instructions in the supplied documentation.

This symbol indicates that a device, or part of a device, may be susceptible to electrostatic discharges (ESD) which can result in damage to the product. Observe ESD precautions given on the product, or its user documentation, when handling equipment bearing this mark.

The CE mark shows that the product complies with all relevant European Legal Directives

The C-Tick mark is a registered trademark of the Australian Communications Authority. This signifies compliance with the Australian EMC Framework Regulations under the terms of the Radiocommunications Act of 1992.

ISM Group 1 Class A

ICES/NMB-003

This is a symbol of an Industrial, Scientific, and Medical Group 1 Class A product.

This ISM device complies with Canadian ICES-003.

Cet appareil ISM est conforme a la norme NMB-003 du Canada

This equipment is Class A suitable for professional use and is for use in electromagnetic environments outside of the home.

Table of Co n tents

1. Using the N2002A

Introd

uction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Recommended Test Equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

N2002A Verification Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

General Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Replaceable Parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Contacting Keysight Technologies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

2. The Noise Source Calibration Process and Recommended Test Equipment

The Calibration Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Calibration Cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Test Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Excess Noise Ratio (ENR dB) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Loading the Reference Standard’s ENR Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Overview of the ENR Measurement Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

The Test Equipment Connection Diagrams for ENR Measurements . . . . . . . . . . . . . . . . 24

ENR Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Reflection Coefficient Magnitude and Phase . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Contents

Reference Standard Noise Source Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Recommended Test Equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

3. Using the Manual Calibration Procedure

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Before You Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Recording the Test Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Failure During the Test Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

ENR Manual Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

The Equations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

System Uncertainty Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Reflection Coefficient Manual Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Calibrating the 8753. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Measuring the DUT over 1st Frequency Range. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Calibrating the 8722. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Measuring the DUT over 1st Frequency Range. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Keysight N2002A User’s Guide vii

Contents

4. Manually Programming Data into an Keysight Smart Noise Source

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47

Equipment Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Data Programming Process. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48

Formatting the Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48

Editing the Data File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48

Programming the Data File into the SNS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49

Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51

5. Using the Keysight N2002A Noise Source Demonstration Software

Getting Started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53

Additional Software Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53

System Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53

Test Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54

Directory Structure Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54

Opening the VEE Pro 6.0 (.vee) Software File. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Setting up the Address Drivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55

Configuring the VEE Pro 6.0 Run Time File IO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56

Before running the Keysight N2002A Noise Source Demonstration Software . . . . . . . . .56

The ENR Measurement Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58

Running the Keysight N2002A Noise Source Demonstration Software. . . . . . . . . . . . . . . . . .60

Test Details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62

ENR Measurement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63

Selecting and Measuring the Reference Standard. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

Selecting the Reference Standard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .66

Entering Reference Standard Uncertainty Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67

Selecting Reference Standard Measurement Uncertainty Data . . . . . . . . . . . . . . . . . . . .69

Performing Reference Standard Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .69

Selecting the DUT to be Measured . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71

Selecting the DUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72

Measuring a DUT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .73

Copying Data to SNS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .75

Making Multi Measurement on a DUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .77

Selecting Other . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79

Setting SNS Bias Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .81

A:.Test Records for the 346A

Reflection Coefficient Magnitude and Phase Test Record . . . . . . . . . . . . . . . . . . . . . . . . . . . .84

Excess Noise Ratio (ENR) Test Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .85

Uncertainty Test Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .86

viii Keysight N2002A User’s Guide

B:.Test Records for the 346B

Reflection Coefficient Magnitude and Phase Test Record . . . . . . . . . . . . . . . . . . . . . . . . . . . 88

Excess Noise Ratio (ENR) Test Record. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

Uncertainty Test Record. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

C:.Test Records for the 346C

Reflection Coefficient Magnitude and Phase Test Record . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

Excess Noise Ratio (ENR) Test Record. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

Uncertainty Test Record. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

D:.Test Records for the N4000A

Reflection Coefficient Magnitude and Phase Test Record . . . . . . . . . . . . . . . . . . . . . . . . . . . 98

Excess Noise Ratio (ENR) Test Record. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99

Uncertainty Test Record. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100

E:.Test Records for the N4001A

Contents

Reflection Coefficient Magnitude and Phase Test Record . . . . . . . . . . . . . . . . . . . . . . . . . . 102

Excess Noise Ratio (ENR) Test Record. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

Uncertainty Test Record. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104

F:.Test Records for the N4002A

Reflection Coefficient Magnitude and Phase Test Record . . . . . . . . . . . . . . . . . . . . . . . . . . 106

Excess Noise Ratio (ENR) Test Record. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

Uncertainty Test Record. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109

G:.Caring for Connectors

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

Connector Part Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

Handling and Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

Visual Inspection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112

Obvious Defects and Damage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112

Mating Plane Surfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112

Precision 7 mm Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113

Sexed Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113

Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

Compressed Air . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

Cleaning Alcohol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

Precision 7 mm Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

Cleaning Interior Surfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116

Drying Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117

Keysight N2002A User’s Guide ix

Contents

Mechanical Inspection: Connector Gages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .118

Mechanical Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .119

Precision 7mm Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .119

Sexed Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .119

50 Ohm Type-N Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .120

75 Ohm Type-N Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .121

Using Connector Gages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .122

Inspecting and Cleaning the Gage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .122

Zeroing the Gage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .122

Measuring Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .123

Making Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .124

Align Connectors Carefully . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .124

To Make a Preliminary Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .124

Final Connection Using a Torque Wrench . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .125

Disconnection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .126

Adapters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .128

Principles of Microwave Connector Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .130

x Keysight N2002A User’s Guide

Keysight Technologies Noise Source Test Set

N2002A

1 Using the N2002A

This chapter contains specifications and typicals for the Keysight N2002A noise source test set. The distinction between specification and typicals is described as follows.

Specifications describe the performance of parameters covered by the product warranty. (The temperature range is 0 ⁰C to 55 ⁰C, unless otherwise noted.)

Typical performance describes additional product performance information that is not covered by the product warranty. It is performance beyond specification that 80% of the units exhibit with a 95% confidence level over the temperature range 20 ⁰C to 30 ⁰C. Typical performance does not include measurement uncertainty.

Introduction

This manual contains operating information for the Keysight N2002A Noise Source

Test Set. It is needed when making Excess Noise Ratio (ENR) tests on a noise source. The N2002A Noise Source Test Set operates over

10.0 MHz to 26.5 GHz.

Figure 1-1 The N2002A Noise Source Test Set

The Keysight N2002A Noise Source Test Set is controlled by a 11713A

Attenuator/Switch Driver. The 11713A can be controlled using the supplied

a frequency range of

Using the N2002A Introduction

Keysight N2002A Noise Source Demonstration Software or it can be controlled

manually. These control methods are described in separate chapters.

Recommended Test Equipment

Table 2-4 on page 29 and Table 2-5 on page 30 lists the recommended test

equipment for the

coefficient magnitude and phase calibration respectively.

Limited substitution of test equipment is supported when using the Keysight N2002A Noise Source Demonstration Software.

The noise source calibration process needs adapters and cables. The cables and adapters are available as an option (Option 001) with the Keysight N2002A. Keysight Technologies recommends using high quality cables and precision adapters. You must ensure all cables and adapters are specified for the frequency range they are operating in. You also need to ensure that they are in good electrical and mechanical condition.

For assistance in choosing the appropriate cable/adapter, or if you are not sure about the correct selection of cables and adapters please contact your local Keysight sales office.

excess noise ratio (ENR) measurement and the reflection

NOTE System performance is only guaranteed if each instrument in the test

system/process is within the manufacturer’s recommended calibration period.

CAUTION Ensure the correct torque settings are used at all times. Refer to Table G-2 on

page 126.

Before You Start

Switch the test equipment on and let it warm up for at least one hour. Allow the Noise Sources to stabilize at the ambient room temperature. Do not use a noise source for one hour prior to performing the tests.

Read the rest of this section before you start any of the tests.

Recording the Test Results

If you are doing the measurements manually, ensure you make a copy of the Test Record of the model you are measuring. Test Records are provided in the Appendices for each noise source model.

10 Keysight N2002A User’s Guide

Using the N2002A Introduction

Keysight Technologies recommend that you make a copy of the Test Record, recording the test results on the copy, and keep the copy for your calibration test record. This record could prove valuable in tracking gradual changes in test results over long periods of time.

Failure During the Test Procedures

If the ENR tests fail and you suspect the N2002A or the DUT requires repair. Please contact your local Keysight Customer Sales and Service Office for replacement parts or repair service information. Refer to “Service” on page 19 for your local Sales and Service Offices.

Handling Precautions

Proper connector care is essential. See Appendix G:, “Caring for Connectors,”

on page 111 for more information.

CAUTION Do not rotate the Noise Source body when connecting it to the Noise Source

Test Set, or internal damage may result.

CAUTION Do not drop the noise source. Dropping can damage the unit.

Keysight N2002A User’s Guide 11

Using the N2002A Description

Description

Figure 1-2 shows the Noise Source Test Set with the cover removed.

Figure 1-3 shows the internal wiring and the reference designators of the parts

used in the Noise Source Test Set.

Figure 1-2 The Noise Source Test Set with Outer Cover Removed

Figure 1-3 The Noise Source Test Set Schematic Component Layout

12 Keysight N2002A User’s Guide

Using the N2002A Operation

Operation

This section refers to control operation of the Keysight N2002A Noise Source Test Set. The Noise Source Test Set is controlled by a 11713A attenuator/switch driver. The 11713A switch controlling settings are shown in the Table 1-1. For more detailed operating instructions, refer to the Keysight 11713A Attenuator/Switch Driver Operating and Service Manual (Part number 11713-90023).

NOTE Connect the X and Y Drive cables between the rear panels of the Noise

Source Test Set and the 11713A Attenuator/Switch Driver.

Table 1-1 11713A Attenuator/Switch Driver Settings

Frequency Path (MHz) Attenuator X Attenuator Y Switches

1234567890

10 to <3000 xx

3000 to 6000 x x

<6000 to 12000 x x

>12000 to 18000 x x

>18000 to 26500 x x

Keysight N2002A User’s Guide 13

Maintenance

N2002A Verification Test

Using the N2002A Maintenance

Proper connector care is a vital part of the maintenance which should be performed by the user. The life of the connector can be greatly extended by following the general connector care practices outlined in Appendix G:,

“Caring for Connectors,” on page 111.

The verification test procedure involves confirming that the N2002A Noise Source Test Set’s switch paths are functioning and the VSWR meets its typical limit. Tab le 1-2 lists the typical VSWR limit and the switch positions on the 11713A.

Equipment Required

— Network analyzer frequency coverage from 10 MHZ to 26.5 GHz.

— Appropriate network analyzer calibration kits.

— Keysight 11713A Attenuator / Switch Driver.

— Viking cables for connection to 11713A.

Connections Required

Connect the Viking control cables from the rear of the 11713A attenuator/switch driver to the rear of the N2002A Noise Source Test Set. Connect Atten X on the 11713A to the Attenuator X on the N2002A and Atten Y on the 11713A to Attenuator Y on the N2002A.

Table 1-2 Typical VSWR

Frequency Typical VSWR

Limit

10 MHz 1:1.05 0 On, 9 On

100 MHz 1:1.05 0 On, 9 On

1 GHz 1:1.05 0 On, 9 On

2 GHz 1:1.05 0 On, 9 On

3 GHz 1:1.05 0 On, 9 On

4 GHz 1:1.1 1 On, 5 On

5 GHz 1:1.1 1 On, 5 On

Switch Positions

6 GHz 1:1.1 1 On, 5 On

7 GHz 1:1.15 3 On, 7 On

8 GHz 1:1.15 3 On, 7 On

14 Keysight N2002A User’s Guide

Using the N2002A Maintenance

Table 1-2 Typical VSWR

Frequency Typical VSWR

Limit

9 GHz 1:1.15 3 On, 7 On

10 GHz 1:1.15 3 On, 7 On

11 GHz 1:1.15 3 On, 7 On

12 GHz 1:1.15 3 On, 7 On

13 GHz 1:1.15 2 On, 6 On

14 GHz 1:1.15 2 On, 6 On

15 GHz 1:1.15 2 On, 6 On

16 GHz 1:1.15 2 On, 6 On

17 GHz 1:1.15 2 On, 6 On

18 GHz 1:1.15 2 On, 6 On

19 GHz 1:1.18 4 On, 8 On

20 GHz 1:1.18 4 On, 8 On

21 GHz 1:1.18 4 On, 8 On

Switch Positions

22 GHz 1:1.18 4 On, 8 On

23 GHz 1:1.18 4 On, 8 On

24 GHz 1:1.18 4 On, 8 On

25 GHz 1:1.18 4 On, 8 On

26 GHz 1:1.18 4 On, 8 On

26.5 GHz 1:1.18 4 On, 8 On

Keysight N2002A User’s Guide 15

Using the N2002A General Specifications

General Specifications

NOTE This instrument is designed for indoor use only.

Table 1-3 Physical Dimension Specifications

Height 88.5 mm (3.5 inches)

Width 212.6 mm (8.5 inches)

Depth 348.3 mm (13.7 inches)

Weight 3.36 kg

Temperature Range

Humidity Range

Altitude Range

Operating: 0

Storage: -40

Operating: Up to 95% relative humidity to 40

Operating: To 4,600 meters

⁰C to +55 ⁰C

⁰C to +70 ⁰C

⁰C (non-condensing)

16 Keysight N2002A User’s Guide

Using the N2002A Replaceable Parts

Replaceable Parts

Table 1-4 and Table 1-5 lists the replaceable parts available for the Keysight

N2002A Noise Sources Test Set.

Table 1-4 Replaceable Parts

Reference Quantity Description Part Number

A1 1 18GHz - 26.5GHz Isolator N2002-80001

A2 1 12GHz - 18GHz Isolator N2002-80002

A3 1 6GHz - 12GHz Isolator N2002-80003

A4 1 3GHz - 6GHz Isolator N2002-80004

A5 1 3dB Attenuator 8493C

J1, J2 2 Bulkhead Connector 5062-1247

S1, S2 2 Multi-port Switch 8769K

W1 1 Semi rigid cable N2002-62003

W2, W3 2 Semi rigid cable N2002-62007

W4 1 Semi rigid cable N2002-62006

W5 1 Semi rigid cable N2002-62005

W6 1 Semi rigid cable N2002-62008

W7 1 Semi rigid cable N2002-62002

W8, W9 2 Viking cable N2002-62001

W10 1 Semi rigid cable N2002-62004

To order parts contact your local Keysight Technologies Sales and Service Office. Refer to “Service” on page 19 for your local Sales and Service Offices

Table 1-5 Replaceable Parts

Description Quantity Part Number

Front Frame 1 N2002-20001

EMI Screen 1 N2002-20002

Front Panel 1 N2002-00003

Chassis 1 N2002-00005

Base Plate 1 N2002-00002

Switch Support 1 N2002-00001

Rear Panel 1 N2002-00004

Keysight N2002A User’s Guide 17

Using the N2002A Replaceable Parts

Table 1-5 Replaceable Parts

Description Quantity Part Number

Rear Bezel 1 E4418-20008

Cover 1 E4418-61027

Front Bumper 1 34401-86011

Rear Bumper 1 34401-86012

Handle 1 34401-45011

18 Keysight N2002A User’s Guide

Service

Using the N2002A Service

Contacting Keysight Technologies

When returning a Noise Source Test Set to Keysight Technologies for repair send it to your nearest Sales and Service Office. These are listed in Table 1-6.

FAQs, instrument software updates, documentation, and other support information can be accessed from this site.

To obtain servicing information or to order replacement parts, contact the nearest Keysight office listed in Table 1-6. In any correspondence or telephone conversations, refer to the instrument by its model number (N9030A) and full serial number (ex. MY49250887). With this information, the Keysight representative can quickly determine whether your unit is still within its warranty period.

Table 1-6

By internet, phone, or fax, get assistance with all your test and measurement needs.

Americas

Country Phone Number

Canada (877) 894 4414

Brazil 55 11 3351 7010

Mexico 001 800 254 2440

United States 1 800 829-4444

Asia Pacific

Country Phone Number

Australia 1 800 629 485

China 800 810 0189

Hong Kong 800 938 693

India 1 800 112 929

Japan 0120 (421) 345

Korea 080 769 0800

Keysight N2002A User’s Guide 19

Using the N2002A Service

Asia Pacific

Country Phone Number

Malaysia 1 800 888 848

Singapore 1 800 375 8100

Taiwan 0800 047 866

Other AP Countries (65) 6375 8100

Europe and Middle

Country Phone Number

Austria 0800 001122

Belgium 0800 58580

Finland 0800 523252

France 0805 980333

Germany 0800 6270999

Ireland 1800 832700

Israel 1 809 343051

Italy 800 599100

Luxembourg +32 800 58580

Netherlands 0800 0233200

Russia 8800 5009286

Spain 0800 000154

Sweden 0200 882255

Switzerland 0800 805353

Opt. 1 (DE) Opt. 2 (FR) Opt. 3 (IT)

United Kingdom 0800 0260637

20 Keysight N2002A User’s Guide

Keysight Technologies Noise Source Test Set

N2002A

2 The Noise Source Calibration Process and

Recommended Test Equipment

The Calibration Process

The calibration process consists of two performance verification tests:

— Excess Noise Ratio (ENR dB) test.

— Reflection Coefficient Magnitude and Phase tests.

The performance verification test procedures verify the electrical performance to traceable standards of the following Keysight noise sources in accordance with their published specification.

— 346A

— 346B

— 346C

— N4000A

— N4001A

— N4002A

NOTE The noise source calibration process also allows you to calibrate both

Keysight Technologies and other manufacturer’s noise sources operating between 10.0 MHz and 26.5 GHz.

NOTE All tests are performed without access to the interior of the noise source.

The Noise Source Calibration Process and Recommended Test Equipment The Calibration Process

NOTE The noise source calibration process also allows you to calibrate additional

measurement frequency points other than the standard card inal points. The measurement frequency points are determined by the frequency entries in the ENR table.

The maximum measurement frequency/ENR pairs is 81.

Calibration Cycle

The noise sources require periodic verification of operational performance. Under normal use and environmental conditions, a noise source is calibrated at 12 month intervals.

22 Keysight N2002A User’s Guide

The Noise Source Calibration Process and Recommended Test Equipment Test Descriptions

Test Descriptions

Excess Noise Ratio (ENR dB)

The Excess Noise Ratio (ENR) test is based on comparing the DUT test results to a reference standard test resul ts. The reference standard is a calibrated noise source with known ENR values. Measurements are taken on both the reference standard and the DUT. The DUT ENR values are derived from these resul ts.

These results verify that the noise source meets its published specification. The specifications are provided in Table 2-1 on page 25.

The measurements are generally made at the cardinal frequencies points, however, the NFA can allow up to 81 frequency/ENR pairs to be stored. The suppled test records in the appendices only contain the cardinal frequency points, therefore you need to create test record to increase this quantity.

NOTE The test should be performed within an environmental ambient temperature

of 296 ±1K (23° ±1°C).

Loading the Reference Standard’s ENR Data

Step 1. If you are using an SNS as a Reference Standard, the NFA uploads its ENR

data automatically. The NFA needs enabled to make this happen automatically.

NOTE Further information on loading SNS ENR data, refer to the NFA User’s Guide.

Step 2. If you are using a 346x as a Reference Standard. you can use one of the

following methods:

—The A: drive.

—The C: drive.

— Create a file from the data supplied with the noise source, for example, the

certificate of calibration or the floppy disc.

— If you only want to calibrate the ENR data on a 346x noise source you can

use the ENR data on the noise source label.

Keysight N2002A User’s Guide 23

The Noise Source Calibration Process and Recommended Test Equipment Test Descriptions

Overview of the ENR Measurement Procedure

The process operates in the following method:

NOTE The ENR values of the reference standard (ENR1) are known.

Step 1. Connect the test equipment together as shown in Figure 2-1.

Step 2. Set the test equipment to the measure the first frequency point.

Step 3. Measure a linear Y-Factor on the reference standard.

Step 4. On the Test Record note the result under the (Y

Step 5. Set the test equipment to the measure the next frequency point and repeat

the process until all the measurement points are complete.

Step 6. Remove the reference standard from the N2002A input and connect the DUT.

Step 7. Set the test equipment to the measure the first frequency point.

Step 8. Measure linear Y-Factor on the DUT.

Step 9. On the Test Record note the result under the (Y

Step 10. Repeat this process for the remaining measurement points.

Step 11. Using these measurement results, entering them in the equations, calculate

the ENR and the uncertainty values.

The Test Equipment Connection Diagrams for ENR Measurements

Figure 2-1 ENR Measurements

) column.

24 Keysight N2002A User’s Guide

The Noise Source Calibration Process and Recommended Test Equipment Test Descriptions

ENR Specifications

NOTE Specifications are valid at ambient temperature 23⁰ Celsius only (296 K).

Table 2-1 ENR Range for the Noise Sources

Instrument Model ENR Range

N4000A/346A 4.5 - 6.5 dB

N4001A/346B 14 - 16 dB

N4002A/346C 12 - 17 dB

Reflection Coefficient Magnitude and Phase

The Reflection Coefficient test measures the input magnitude and phase of the noise source under test and verifies that it meets its published specification. The specifications are provided in Table 2-2 on page 27 and Table 2-3 on

page 27. The tests are measured in the Source ON and OFF states.

The specified frequency ranges are swept for the maximum magnitude and phase and the resultant maximum value is displayed on the VNA. The test also measures the magnitude and phase at cardinal (pre-determined) frequency points. These cardinal frequency points depend on the model and option being tested.

The test equipment is connected together as shown in Figure 2-2 on page 26.

Overview of the Reflection Coefficient Magnitude and Phase Measurement Procedure

NOTE The procedure requires network analyzer frequency range coverage from 10.0

MHz to 26.5 GHz. This procedures uses two VNAs, the 8753 is used to cover the range 10.0 MHz to 3.0 GHz, and the 8722 is used to cover the range 3.0 GHz to 26.5 GHz.

The procedure operates in the following method:

Step 1. Calibrate the 8753 over the specified range, for example, 10.0 MHz to

1.5 GHz.

Step 2. Measure the DUT’s reflection coefficient, in an OFF and ON state, over the

specified range, for example, 10.0 MHz to 1.5 GHz.

Step 3. Note these resultant values on the Test Record.

Keysight N2002A User’s Guide 25

The Noise Source Calibration Process and Recommended Test Equipment Test Descriptions

Step 4. Measure the DUT’s reflection coefficient, in an OFF and ON state, at the

cardinal frequency points in the specified range.

Step 5. Note these resultant values on the Test Record.

Step 6. Repeat the Calibration and Measurement process using the 8753 over the

specified range, for example, 1.5 GHz to 3.0 GHz.

Step 7. Calibrate the 8722 over the specified range, for example, from 3.0 GHz to 7.0

GHz.

Step 8. Measure the DUT’s reflection coefficient, in an OFF and ON state, over the

specified range, for example, 3.0 GHz to 7.0 GHz.

Step 9. Note these resultant value on the Test Record.

Step 10. Measure the DUT’s reflection coefficient, in an OFF and ON state, at the

cardinal frequency points in the specified range.

Step 11. Note these resultant values on the Test Record.

Step 12. Repeat the Calibration and Measurement process using 8722 over the

specified range, for example, 3.0 GHz to 7.0 GHz

The Test Equipment Connection Diagrams for Reflection and Phase Measurements

Figure 2-2 Reflection and Phase Measurements

26 Keysight N2002A User’s Guide

The Noise Source Calibration Process and Recommended Test Equipment Test Descriptions

Reflection and Phase Specifications

Table 2-2 Reflection Coefficient for 346x Noise Source

Frequency Range Model

346A 346B 346C

10.0 MHz to 30.0 MHz 0.13 0.13 0.11

30.0 MHz to 5.0 GHz 0.07 0.07 0.11

5.0 GHz to 18.0 GHz 0.11 0.11 0.11

18.0 GHz to 26.5 GHz ---------------- ---------------- 0.15

Table 2-3 Reflection Coefficient for the N400xA SNS

Frequency Range Model

N4000A N4001A N4002A

10.0 MHz to 1.5 GHz 0.02 0.07 0.10

1.5 GHz to 3.0 GHz 0.02 0.07 0.10

3.0 GHz to 7.0 GHz 0.06 0.09 0.10

7.0 GHz to 18.0 GHz 0.10 0.11 0.11

18.0 GHz to 26.5 GHz ---------------- ---------------- 0.15

Keysight N2002A User’s Guide 27

The Noise Source Calibration Process and Recommended Test Equipment Reference Standard Noise Source Selection

Reference Standard Noise Source Selection

The reference standard selection defines the measurement frequencies of both the reference standard and the DUT. Both the reference standard and the DUT must be measured at the same frequency points.

The accuracy of the DUT’s ENR measurement results is dependent on the calibration accuracy of the reference standard. Also, a proportion of the DUT’s measurement uncertainty is based on the reference standard’s measurement uncertainty. Therefore, to maximize the measurement accuracy and minimize the measurement uncertainty, a reference standard that has been calibrated by a national standards laboratory is recommended.

NOTE

NOTE A Reference Standard’s ENR values are valid at calibration temperature only.

A Reference Standard’s uncertainty values are only valid at ambient temperature 23°C ±1°C (296K).

More than one reference standard may be required for more accurate results. Keysight Technologies recommend using the same type of reference standard as the noise source being measured.

The ENR measurement process requires various adapters and cables. For more accurate results Keysight Technologies recommend using high quality cables and precision adapters. Care should be taken to ensure all cables and adapters are specified for the frequency range in which they are used and that they are in good electrical and mechanical condition.

Keysight Technologies noise sources can be used at non-standard (not cardinal) frequency points by creating an ENR table containing the wanted measurement frequency points. However, the ENR values and the ENR uncertainty values of the reference standard must be manually interpolated from the supplied data.

28 Keysight N2002A User’s Guide

The Noise Source Calibration Process and Recommended Test Equipment Recommended Test Equipment

Recommended Test Equipment

Table 2-4 Recommended Test Equipment for ENR Measurements

Equipment Description Critical Specifications for Equipment

Substitution

Noise Figure Analyzer No substitute available for SNS N8975A

Noise Source Test Set No substitute available N2002A

Attenuator/Switch Driver Compatible with 8768K multi-port switch 11713A

Attenuator/Switch Driver Interconnect Cables (x2)

Standard Noise Source (Dependant on DUT)

RF Cable 10MHz to 26.5GHz 3.5mm (M) to 3.5mm (M),

Adapter (NFA and Noise Source Test Set)

Adapter (Dependant on DUT) DUT Connector Type: Adapter Type:

Compatible with 11713A Viking terminals 11764A

See “Reference Standard Noise Source Selection” on page 28

61 cm (24 in)

3.5mm Precision (F) to 3.5mm (F) 1250-1749

Type N (Male)

3.5mm (F) to Type N (F)

Type N (Female) 3.5mm (F) to Type N (M) 1250-1744

Recommended Model

11500E

1250-1745

APC 7

3.5mm (F) to APC 7

3.5mm (Male)

3.5mm (F) to 3.5mm (F)

BNC Lead Length 122cm (48”), Frequency 10MHz 10503A

SNS Interconnect Cable No substitute available 11730A

1250-1747

1250-1749

Keysight N2002A User’s Guide 29

The Noise Source Calibration Process and Recommended Test Equipment Recommended Test Equipment

Table 2-5 Recommended Test Equipment for ENR Measurements

Equipment Description Critical Specifications for

Equipment Substitution

Noise Figure Analyzer No substitute available for SNS N8975A

Vector Network Analyzer 1 10MHz to 3GHz 8753ES or 8753ET, opt 004

Vector Network Analyzer 2 3GHz to 18GHz or 26.5GHz 8722ES or 8722ET, opt 004

Calibration Kit 1 Connector: Type N

Impedance: 50 Ohm Bandwid th: 10MHz to 3GHz

Calibration Kit 2 Connector: 3.5mm

Impedance: 50 Ohm Bandwid th: 10MHz to 3GHz

Calibration Kit 3 Connector: 7 mm

Impedance: 50 Ohm Bandwid th: 10MHz to 3GHz

Calibration Kit 4 Connector: Type N

Impedance: 50 Ohm Bandwid th: 10.0 MHz to 18.0 GHz

Calibration Kit 5 Connector: 3.5 mm

Impedance: 50 Ohm Bandwid th: 10.0 MHz to 18.0 GHz

Recommended Model

85032E

85033D

85031B

85054D

85052D

Calibration Kit 6 Connector: 7 mm

Impedance: 50 Ohm Bandwid th: 10.0 MHz to 18.0 GHz

BNC Lead Length 122cm (48") 10503A

SNS Interconnect Cable No substitute available 11730A

85050D

30 Keysight N2002A User’s Guide

Keysight Technologies Noise Source Test Set

N2002A

3 Using the Manual Calibration Procedure

Introduction

Before You Start

Read the rest of this section before you start any of the tests. Make a copy of the Test Record of the models you are measuring.

Recording the Test Results

Test Records are provided in the Appendices for each Keysight noise source model.

Failure During the Test Procedures

If any of the tests fail and you suspect the unit requires repair. Please contact your local Keysight Customer Sales and Service Office for replacement parts or repair service information. Refer to Service Offices.

“Service” on page 19 for your local Sales and

Using the Manual Calibration Procedure ENR Manual Procedure

ENR Manual Procedure

This procedure must be performed using the Test Records.

Before you start, enter the reference standard’s ENR values in the Standard ENR1 column in the ENR Test Record and the reference standard’s uncertainty values in the Standard ENR1 Uncertainty column in the Uncertainty Test Record. These values are needed when calculating the DUT’s values using the equations.

NOTE Refer to “Reference Standard Noise Source Selection” on page 28 for

information on this selection criteria.

CAUTION Ensure the correct torque settings are used at all times. Refer to Appendix G’s

Table 2 on page 126.

Step 1. Connect the equipment as shown in Figure 2-1. Depending on the reference

standard noise source selected, connect the equipment using either the SNS interconnect cable or the BNC lead. Ensure the reference standard noise source RF connector is the same type as the DUT and connect using the preferred adapters listed in Table 2-4 on page 23.

Step 2. Ensure the Noise Figure Analyzer preset is set to factory settings.

a. Press the System key.

b. Press the More 1 of 3 menu key.

c. Press the Power On/Preset menu key.

d. Set the Power On to Power On (Preset) and Preset to Preset (Factory).

Step 3. Press Preset and wait for the preset routine to finish.

Step 4. Load the reference standard noise source ENR data.

Refer to Chapter 2’s “Loading the Reference Standard’s ENR Data” on

page 23 for information on this.

NOTE Do not calibrate the NFA. Ensure the NFA displays Uncorr.

Step 5. Select the display to meter mode.

a. Press the Format key.

b. Press the Format menu key.

c. Press the Meter menu key.

32 Keysight N2002A User’s Guide

Using the Manual Calibration Procedure ENR Manual Procedure

Step 6. Set the measured result to Y-Factor.

a. Press the Result key.

b. Press the Y-Factor menu key.

Step 7. Set the Y-Factor scale to linear units.

a. Press the Scale key.

b. Set the Units to Units (Linear).

Step 8. Set sweep to single.

a. Press the Sweep key.

b. Set the Sweep to Sweep Mode (Single).

Step 9. Set the frequency mode to fixed.

a. Press the Frequency/Points key.

b. Press the Freq Mode menu key.

c. Press the Fixed menu key.

Step 10. Set the averaging to 128 (or greater).

a. Press the Averaging/Bandwid th key.

b. Set the Averaging to Averaging (On).

c. Set the Average Mode to Average Mode (Sweep).

d. Press the Averages menu key and on the numeric key pad press 1, 2, 8,

followed by the Enter key.

Step 11. Alignment point.

Step 12. Set the frequency to 10.0 MHz.

a. Press the Frequency/Points key.

b. Press the Fixed Freq menu key and on the numeric key pad press 1, 0,

followed by the MHz menu key.

NOTE 10.0 MHz is the first frequency listed in the test record.

Step 13. Set the Attenuator/Switch Driver as follows:

a. Ensure LOCAL LED is on.

b. Set the switch to the required frequency path, for example, switches 9 and

0 are on, when measuring between 10.0 MHz and 3.0 GHz.

Keysight N2002A User’s Guide 33

Using the Manual Calibration Procedure ENR Manual Procedure

NOTE Refer to Table 1-1 on page 13 for Attenuator/Switch Driver settings for other

frequency ranges.

Step 14. On the NFA, press the Restart key, this restarts the NFA’s sweep.

Step 15. When the measurement is finished, in the Test Record, enter the Y-factor

reading next to the frequency point measured in the Standard Y

(Lin)

column.

Step 16. Repeat the steps for the remaining frequencies listed in the test record.

NOTE Set the Attenuator/Switch to the appropriate frequency path when changing

between frequency ranges.

Step 17. Connect the DUT as shown in Figure 2-1 on page 24. Depending on the DUT,

either use the SNS interconnect cable or the BNC cable.

Step 18. Set the frequency to 10.0 MHz

a. Press the Frequency/Points key.

b. Press the Fixed Freq menu key and on the numeric key pad press 1, 0,

followed by the MHz menu key.

NOTE 0.0 MHz is the first frequency listed in the test record.

Step 19. Set the Attenuator/Switch Driver as follows:

a. Ensure LOCAL LED is on.

b. Set the switch to the required frequency path, for example, switches 9 and

0 are on, when measuring between 10.0 MHz and 3.0 GHz.

Step 20. On the NFA, press the Restart key, this restarts the NFA’s sweep.

Step 21. When the measurement is finished, in the Test Record enter the Y-factor

reading next to the frequency point measured in the DUT Y

Step 22. Repeat the steps for the remaining frequencies listed in the test record.

(Lin) column.

NOTE Set the Attenuator/Switch to the appropriate frequency path when changing

between frequency ranges.

34 Keysight N2002A User’s Guide

Using the Manual Calibration Procedure

ENR

Y21–()T

ENR

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





Y11–()

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







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

log×=

UcENR

()2UcSys()+

ENR Manual Procedure

Step 23. Using the Equation 3-1 and the results in the ENR Test Record, calculate the

value of each fixed frequency point for the DUT. Enter the ENR2

ENR

calculated values in the DUT ENR

Step 24. Complete the ENR Test Record results for the DUT and ensure the measured

values are within the published specification.

Step 25. Using the Equation 3-2 and the results in the Uncertainty Test Record,

calculate the ENR DUT. Enter the U

Step 26. Complete the Uncertainty Test Record results for the DUT.

Step 27. If using an SNS series, transfer the data to the SNS using the procedure in the

section “Data Programming Process” on page 48.

The Equations

Equation 3-1 ENR Equation

(dB) column.

uncertainty value of each fixed frequency point for the

ENR2 calculated value in DUT ENR2 Uncertainty column.

The overall expanded uncertainty is calculated using the following equation for each ENR

Noise Ratio (ENR dB) Test Records.

Equation 3-2 Uncertainty Equation

Keysight N2002A User’s Guide 35

value at each frequency point. See also the Appendixes for Excess

Using the Manual Calibration Procedure ENR Manual Procedure

Table 3-1 Terms Used in the Equations

Term Description

TO 290 Kelvin

DUT Device under test

ENR

Primary Standard Excess Noise Ratio value at each fixed frequency point

DUT calculated Excess Noise Ratio value at each fixed frequency point

Primary Standard measured linear Y-Factor at each fixed frequency point

DUT measured linear Y-Factor at each fixed frequency point

Primary Standard expanded uncertainty for each ENR value at each fixed frequency point

ENR

DUT calculated expanded uncertainty for each ENR value at each fixed frequency point

Sys Overall Test system uncertainty at each fixed frequency point

System Uncertainty Values

Table 3-2 is a summary of the uncertainty analysis calculations.

Table 3-2 Uncertainty Analysis Calculation Resul ts

Frequency (GHz) UcSys (± dB)

0.01 0.0785

0.10 0.0785

1.00 0.0905

2.00 0.0905

3.00 0.0726

4.00 0.0726

5.00 0.0726

6.00 0.0726

7.00 0.0800

8.00 0.0800

9.00 0.1076

10.00 0.1076

11.00 0.1076

36 Keysight N2002A User’s Guide

Using the Manual Calibration Procedure ENR Manual Procedure

Table 3-2 Uncertainty Analysis Calculation Resul ts

Frequency (GHz) UcSys (± dB)

12.00 0.1076

13.00 0.1211

14.00 0.1211

15.00 0.1211

16.00 0.1211

17.00 0.1211

18.00 0.1211

19.00 0.1491

20.00 0.1491

21.00 0.1491

22.00 0.1491

23.00 0.1491

24.00 0.1491

25.00 0.1491

26.00 0.1491

26.50 0.1491

Keysight N2002A User’s Guide 37

Using the Manual Calibration Procedure Reflection Coefficient Manual Procedure

Reflection Coefficient Manual Procedure

This test measures the Reflection Coefficient Magnitude and Phase of a noise source from 10.0 MHz to 26.5 GHz. It may need two Vector Network Analyzers (VNAs) to achieve the frequency range required.

Some noise sources have a break point which transgress the frequency range of the Vector Network Analyzers. These have been identified in the Test Records and you need to calibrate and test in these ranges.

NOTE The procedures refer to the key presses on an 8753ET. Other network

analyzers, for example, the 8753D may have different key labeling. Please refer to the appropriate user’s guide for the relevant menu maps.

Calibrating the 8753

Use the following procedure to calibrate the 8753.

NOTE Ensure the noise source’s RF connector is the same type as the VNA and

connected using the preferred adapters listed in Table 2-5 on page 30.

NOTE The following example measures an N4000A. This model needs reflection and

phase measured over two frequency ranges, 10.0 MHz to 1.5 GHz and 1.5 GHz to 3.0 GHz. The model you are measuring may need different frequency ranges measured, hence you need to confirm this by using your model’s specifications and adjust the procedure accordingly.

Step 1. Factory Preset the Vector Network Analyzer.

a. Press the Preset key.

Step 2. Set the Active Channel to 1.

a. Press the Chan 1 key.

Step 3. Set the measurement mode to S11.

a. Press the Meas key.

b. Press the Reflection menu key.

Step 4. Set the 10.0 MHz start and 1.5 GHz stop frequencies.

a. Press the Start key.

b. Press the 1, 0, M/m keys.

38 Keysight N2002A User’s Guide

Using the Manual Calibration Procedure Reflection Coefficient Manual Procedure

c. Press the Stop key.

d. Press the 1, ., 5 , G/n keys.

Step 5. Set the measurement format to Polar.

a. Press Format key.

b. Press the Polar menu key.

Step 6. Set the number of measurement points to 401 points.

a. Press the Sweep Setup key.

b. Press the NUMBER of POINTS menu key.

c. Press the 4, 0, 1, x1 keys.

Step 7. Set the power level to –30dBm.

a. Press the Power key.

b. Press the -, 3, 0, x1 keys.

Step 8. If required, connect an adapter to connect the noise source under test to port

1 of the VNA.

NOTE The connector type (male/female) applies to the test port or adapter if fitted,

not the DUT’s connector.

Step 9. Select the appropriate calibration kit being used.

a. Press the Cal key

b. Press the CAL KIT menu key.

c. Press the SELECT CAL KIT menu key.

d. Select the calibration kit being used, for example, press the 85032B/E

menu key.

NOTE The calibration kit selection is dependent on the noise source under test.

e. Press the Return menu key.

Step 10. Select a S11 port calibration.

a. Press the Cal key.

b. Press the Calibrate Menu menu key.

c. Press the Reflection 1-Port menu key.

Keysight N2002A User’s Guide 39

Using the Manual Calibration Procedure Reflection Coefficient Manual Procedure

Step 11. Connect the Open to the test port (or, if fitted, the adapter) and perform the

open calibration.

a. Press the Opens menu key.

b. Select either Open (M) or Open (F) menu key.

c. When complete, press the Done Opens menu key.

Step 12. Connect the Short to the test port (or, if fitted, the adapter) and perform the

short calibration.

a. Press the Shorts menu key.

b. Select either Short (M) or Short (F) menu key.

c. When complete, press the Done Shorts menu key.

Step 13. Connect the Load to the test port (or, if fitted, the adapter) and perform the

load calibration.

a. Press the Loads menu key.

b. When complete, press Done 1-port CAL.

Step 14. Save the calibration.

a. Press the Save/Recall menu key.

b. Press the Save State menu key.

c. Note the Register the calibration data is saved in.

Measuring the DUT over 1st Frequency Range

Use the following procedure to measure the DUT.

NOTE The following example measures an N4000A. This model needs reflection and

phase measured over two frequency ranges, 10.0 MHz to 1.5 GHz and 1.5 GHz to 3.0 GHz using the 8753. The model you are measuring may need different frequency ranges measured, hence you need to confirm this by using your model’s specifications and adjust the procedure accordingly.

Step 1. Connect the equipment as shown in Figure 2-2 on page 26.

NOTE Ensure the VNA’s RF connector is the same type as the DUT and connected

using the preferred adapters listed in Table 2-5 on page 30.

Step 2. Ensure the VNA display format is set to Polar.

a. Press the Meas key. (This returns the format to Polar.)

40 Keysight N2002A User’s Guide

Using the Manual Calibration Procedure Reflection Coefficient Manual Procedure

Step 3. On the VNA, set the averaging to 16.

a. Press the Avg key.

b. Press the Averaging to Averaging (On).

c. Press the Averaging Factor menu key.

d. Press the 1, 6, x1 keys.

Step 4. Ensure the Noise Figure Analyzer preset is set to factory settings.

a. Press the System key.

b. Press the More 1 of 3 menu key.

c. Press the Power On/Preset menu key.

d. Set the Power On to Power On (Preset) and Preset to Preset (Factory).

Step 5. On the NFA, press Preset and wait for the routine to finish.

Step 6. On the NFA, set the sweep to single and wait for the sweep to finish.

a. Press the Sweep key.

b. Set the Sweep to Sweep Mode (Single).

Step 7. On the NFA, set the noise source to off.

a. Press the Sweep key.

b. Press the Manual Meas menu key.

c. Press the Manual State (On) menu key.

d. Press the Noise Source Off menu key.

Step 8. n the VNA, press the Marker Search key.

Step 9. On the VNA, press the Search: Max menu key.

Step 10. Record the Source OFF maximum displayed reflection magnitude and phase

values on the Test Record.

Step 11. On the NFA, press the Noise Source On menu key.

Step 12. On the VNA, press the Marker Search key.

Step 13. On the VNA, press the Search: Max menu key.

Step 14. Record the Source ON maximum displayed reflection magnitude and phase

values on the Test Record.

Step 15. On the VNA, set the marker to 10.0 MHz.

ess the Marker key.

a. Pr

ess the 1, 0, M/m keys.

b. Pr

Keysight N2002A User’s Guide 41

Using the Manual Calibration Procedure Reflection Coefficient Manual Procedure

Step 16. Record the Source ON maximum displayed reflection magnitude and phase

values on the Test Record to 10.0 MHz.

Step 17. Repeat the steps for the 100.0 MHz and 1.0 GHz cardinal frequency points

listed in the Test Record and note their values on the test record.

Step 18. On the NFA, press the Noise Source Off menu key.

Step 19. Recording the Source OFF maximum displayed reflection magnitude and

phase values on the test record at 1.0 GHz.

Step 20. Repeat the step for the 100.0 MHz and 10.0 MHz cardinal frequency points

listed in the Test Record and note their values on the Test Record.

Step 21. Ensure all the measured values are within the published specification.

NOTE Repeat the calibration and measurement procedure for the other frequency

ranges as applicable.

Calibrating the 8722

Use the following procedure to calibrate the 8722.

NOTE The following example measures an N4000A. This model needs reflection and

phase measured over two frequency ranges, 3.0 GHz to 7.0 GHz and 7.0 MHz to 18.0 GHz using the 8722. The model you are measuring may need different frequency ranges measured, hence you need to confirm this by using your model’s Test Records and adjust the procedure accordingly.

NOTE Ensure the noise source’s RF connector is the same type as the DUT and

connected using the preferred adapters listed in Table 2-5 on page 30.

Step 1. Factory Preset the Vector Network Analyzer.

a. Press the Preset key.

Step 2. Set the Active Channel to 1.

a. Press the Chan 1 key.

Step 3. Set the measurement mode to S11.

a. Press the Meas key.

b. Press the Reflection menu key.

Step 4. Set the 3.0 GHz start and 7.0 GHz stop frequencies.

42 Keysight N2002A User’s Guide

Using the Manual Calibration Procedure Reflection Coefficient Manual Procedure

a. Press the Start key.

b. Press the 3, ., 0, G/n keys.

c. Press the Stop key.

d. Press the 7, ., 0 , G/n keys.

Step 5. Set the measurement format to Polar.

a. Press Format key.

b. Press the Polar menu key.

Step 6. Set the number of measurement points to 401 points.

a. Press the Sweep Setup key.

b. Press the NUMBER of POINTS menu key.

c. Press the 4, 0, 1, x1 keys.

Step 7. Set the power level to –30dBm.

a. Press the Power key.

b. Press the -, 3, 0, x1 keys.

Step 8. If required, connect an adapter to connect the noise source under test to port

1 of the VNA.

NOTE The connector type (male/female) applies to the test port or adapter if fitted,

not the DUT’s connector.

Step 9. Select the appropriate calibration kit being used.

a. Press the Cal key

b. Press the CAL KIT menu key.

c. Press the SELECT CAL KIT menu key.

d. Select the calibration kit being used, for example, press the 85032B/E

menu key.

NOTE The calibration kit selection is dependent on the noise source under test.

e. Press the Return menu key.

Step 10. Select a S11 port calibration.

a. Press the Cal key.

Keysight N2002A User’s Guide 43

Using the Manual Calibration Procedure Reflection Coefficient Manual Procedure

b. Press the Calibrate Menu menu key.

c. Press the Reflection 1-Port menu key.

Step 11. Connect the Open to the test port (or, if fitted, the adapter) and perform the

open calibration.

a. Press the Opens menu key.

b. Select either Open (M) or Open (F) menu key.

c. When complete, press the Done Opens menu key.

Step 12. Connect the Short to the test port (or, if fitted, the adapter) and perform the

short calibration.

a. Press the Shorts menu key.

b. Select either Short (M) or Short (F) menu key.

c. When complete, press the Done Shorts menu key.

Step 13. Connect the Load to the test port (or, if fitted, the adapter) and perform the

load calibration.

a. Press the Loads menu key.

b. When complete, press Done 1-port CAL.

Step 14. Save the calibration.

a. Press the Save/Recall menu key.

b. Press the Save State menu key.

c. Note the Register the calibration data is saved in.‘

Measuring the DUT over 1st Frequency Range

Use the following procedure to measure the DUT.

NOTE The following example measures an N4000A. This model needs reflection and

NOTE Ensure the noise source’s RF connector is the same type as the DUT and

connected using the preferred adapters listed in Table 2-5 on page 30.

Step 1. Connect the equipment as shown in Figure 2-2 on page 26.

44 Keysight N2002A User’s Guide

Using the Manual Calibration Procedure Reflection Coefficient Manual Procedure

Step 2. Ensure the VNA display format is set to Polar.

a. Press the Meas key. (This returns the format to Polar.)

Step 3. On the VNA, set the averaging to 16.

a. Press the Avg key.

b. Press the Averaging to Averaging (On).

c. Press the Averaging Factor menu key.

d. Press the 1, 6, x1 keys.

Step 4. Ensure the Noise Figure Analyzer preset is set to factory settings.

a. Press the System key.

b. Press the More 1 of 3 menu key.

c. Press the Power On/Preset menu key.

d. Set the Power On to Power On (Preset) and Preset to Preset (Factory).

Step 5. On the NFA, press Preset and wait for the routine to finish.

Step 6. On the NFA, set the sweep to single and wait for the sweep to finish.

a. Press the Sweep key.

b. Set the Sweep to Sweep Mode (Single).

Step 7. On the NFA, set the noise source to off.

a. Press the Sweep key.

b. Press the Manual Meas menu key.

c. Press the Manual State (On) menu key.

d. Press the Noise Source Off menu key.

Step 8. On the VNA, press the Marker Search key.

Step 9. On the VNA, press the Search: Max menu key.

Step 10. Record the Source OFF maximum displayed reflection magnitude and phase

values on the Test Record.

Step 11. On the NFA, press the Noise Source On menu key.

Step 12. On the VNA, press the Marker Search key.

Step 13. On the VNA, press the Search: Max menu key.

Step 14. Recor

d the Sour

ce ON maximum displayed reflection magnitude and phase

values on the Test Record.

Step 15. On the VNA, set the marker to 3.0 GHz.

Keysight N2002A User’s Guide 45

Using the Manual Calibration Procedure Reflection Coefficient Manual Procedure

a. Press the Marker key.

b. Press the 3, ., 0, G/n keys.

Step 16. Record the Source ON maximum displayed reflection magnitude and phase

values on the Test Record at 3.0 GHz.

Step 17. Repeat the steps for the 4.0 GHz, 5.0 GHz, 6.0 GHz, and 7.0 GHz cardinal

frequency points listed in the Test Record and note their values on the Test Record.

Step 18. On the NFA, press the Noise Source Off menu key.

Step 19. Recording the Source OFF maximum displayed reflection magnitude and

phase values on the test record at 7.0 GHz.

Step 20. Repeat the step 13 for the 4.0 GHz, 5.0 GHz, 6.0 GHz, and 7.0 GHz cardinal

frequency points listed in the Test Record and note their values on the Test Record.

Step 21. Ensure all the measured values are within the published specification.

NOTE Repeat the calibration and measurement procedure for the other frequency

ranges as applicable.

46 Keysight N2002A User’s Guide

Keysight Technologies Noise Source Test Set

N2002A

4 Manually Programming Data into an Keysight Smart

Noise Source

Introduction

This section describes the procedure used to program data into an Keysight N400xA Series Smart Noise Sources.

WARNING This procedure is performed at the your own risk. Failure to correctly

follow this procedure may render the noise source inoperative.

Equipment Required

The following equipment is required to program data into an Keysight N400xA smart noise source series:

— An Keysight NFA Series Noise Figure Analyzer.

— An 11730A Noise Source cable to connect the noise source to the NFA.

— A 3.5 inch formatted floppy disk.

—A personal computer.

Manually Programming Data into an Keysight Smart Noise Source Data Programming Process

Data Programming Process

The new calibration data to be programmed into the smart noise source must be in the correct format. Formatting the data can only be performed on a PC. When the data is in the correct format it is copied to the NFA, and then programmed into the smart noise source

Formatting the Data

An example data file is shown in page 51 and shows the cardinal frequency points of an 18.0 GHz SNS. This example file can be used as a template for formatting the data to be programmed into the smart noise source. Alternatively, the data currently contained into the SNS can be copied to a PC and used as a template, using the following procedure.

Step 1. Connect the smart noise source to the NFA.

Step 2. Confirm the Source Preference is set to SNS. To do this follow Step 3 through

to Step 5.

Step 3. Press the ENR key.

Step 4. Press the SNS Setup menu key.

Step 5. Ensure Preference is set to Preference (SNS).

Step 6. Save the data from the smart noise source by pressing File key.

Step 7. Press the Save menu key.

Step 8. Press the ENR menu key.

Step 9. Press the SNS menu key.

Step 10. Using the Alpha Editor, name the file, for example, template.enr.

Step 11. Transfer this template file to your PC from the floppy disk.

Step 12. Save a copy of this file in your PC.

The file can be edited in an ASCII text editor, for example, Notepad.

Editing the Data File

There are only certain fields in the data file which you should edit. The example data file shown in page 51, shows the following information:

— The NFA model.

— The NFA serial number.

— The NFA firmware revision.

— The date that the data file was created.

— The serial number of the smart noise source.

48 Keysight N2002A User’s Guide

Manually Programming Data into an Keysight Smart Noise Source Data Programming Process

— The model number of the smart noise source.

— The calibration date.

— The temperature the calibration was carried out under.

— The humidity the calibration was carried out under.

The fields that are edited in the data file are:

— [Caldate 20010227] - Calibration Date (yyyymmdd)

— [Temperature 23.000000] - Temperature the calibration was performed at.

— [Humidity 30.000000] - Humidity the calibration was performed at.

NOTE Do not change the value shown in the field marked [Current xxxx], as this

affects the smart noise source’s performance.

The other fields in the data file contain the frequency points, ENR (dB) values, ENR uncertainties, and Reflection and Phase values. The frequency points can be added or removed as required. The maximum number of points is 81.

NOTE Each field must have a data entry, for this process to work correctly.

Programming the Data File into the SNS

Program the data file into the SNS use the following procedure.

Step 1. Save the new data file as ‘writesns.enr’ to a floppy disk.

Step 2. Insert the floppy disk in the NFA’s floppy drive.

Step 3. Press the System key.

Step 4. Press the More 1 of 3 menu key.

Step 5. Press the More 2 of 3 menu key.

Step 6. Press the Service menu key.

Step 7. Enter the password by pressing -, 2, 0,1, 0 on the numeric key pad.

Step 8. Press the Enter key.

Step 9. Press the Service menu key.

Step 10. Press the More 1 of 2 menu key.

Step 11. Press the Write to SNS menu key and follow the instructions on the display.

Keysight N2002A User’s Guide 49

Manually Programming Data into an Keysight Smart Noise Source Data Programming Process

Verifying the SNS was Programmed

To check if the SNS was programmed successfully, do the following:

Step 1. Press the ENR key.

Step 2. Press the ENR Table menu key.

Step 3. Press the Fill Table From SNS menu key.

The ENR Table should show the correct data.

50 Keysight N2002A User’s Guide

Manually Programming Data into an Keysight Smart Noise Source Example

Example

This example is an SNS ENR file saved to a diskette:

NOTE The values shown in the example are representative of their position in the

file.

# ENR Data File

# Created by N8975A NFA Series Noise Figure Analyzer

# Serial Number GB40390135 Firmware Revision A.01.01

# 13:37:07 Mar 28, 2002

# Format is: Frequency (Hz), ENR (dB), ENR Unc (dB), # On Refl.Mag (lin),

# On Refl.Phase (deg), Off Refl.Mag (lin), # Off Refl.Phase (deg), On Refl.Mag Unc (lin),

# On Refl.Phase Unc (deg), Off Refl.Mag Unc (lin), # Off Refl.Phase Unc (deg)

[Filetype ENR]

[Version 1.1]

[Serialnumber US411130226][Model N4001A]

[Caldate 20000727]

[Trackingnum 10]

[Temperature 23.000000]

[Humidity 63.000000]

[Current 2688]

10000000,15.281,0.193,0.0450,-136.0,0.0450,-136.0,0.0030, -6.0,

0.0070, +6.0 100000000, 15.291, 0.190, 0.0358, +168.0, 0.0358, +168.0, 0.0040, +4.6, 0.0050, -4.6 1000000000, 15.118, 0.151, 0.0398, +39.6, 0.0398, +39.6, 0.0100, +4.5, 0.0067, +1.5 2000000000, 14.999, 0.168, 0.0377, 0.168, 0.0377, -85.7, 0.0056, +0.9, 0.0086, +1.9 3000000000, 14.879, 0.172, 0.0267, +150.6, 0.0267, +150.6, 0.0080,

-9.2, 0.0090, -1.2 4000000000, 14.795, 0.173, 0.0130, -18.1, 0.0130, -18.1, 0.0013, +16.0, 0.0063, +10.0 5000000000, 14.818, 0.179, 0.0359, +169.5, 0.0359, +169.5, 0.0024,

-9.3, 0.0035, -0.3 6000000000, 14.846, 0.181, 0.0556, +63.7, 0.0556, +63.7, 0.0041, +10.3, 0.0067, -4.3 7000000000, 14.895, 0.180, 0.0430, -37.0, 0.0430, -27.0, 0.0079,

Keysight N2002A User’s Guide 51

Manually Programming Data into an Keysight Smart Noise Source Example

-2.3, 0.0049, -2.3 8000000000, 15.016, 0.198, 0.0232, -160.3, 0.0232, -160.3, 0.0091,

-3.8, 0.0053, -1.8 9000000000, 15.134, 0.201, 0.0122, +71.4,0.0122, +71.4, 0.0037, +17.3, 0.0057, +7.3 10000000000, 15.253, 0.194, 0.0080, +116.2, 0.0080, +116.2, 0.0048,

-1.4, 0.0056, -5.4 11000000000, 15.249, 0.243, 0.0241, +65.7, 0.0241, +65.7, 0.0059, +1.5, 0.0049, +44.5 12000000000, 15.349, 0.240, 0.0196, +8.8, 0.0196, +8.8, 0.0057, +3.2, 0.0077, +2.2 13000000000, 15.383, 0.188, 0.0217, -5.4, 0.0217, -5.4, 0.0062,

-6.9, 0.0045, -1.9 14000000000, 15.355, 0.178, 0.0228, -66.6, 0.0228, -66.6, 0.0075, +11.2, 0.0065, +1.2 15000000000, 15.367, 0.187, 0.0141, +141.6, 0.0141, +141.6, 0.0036,

-3.2, 0.0029, -1.2 16000000000, 15.421, 0.182, 0.0251, +6.4, 0.0251, +6.4, 0.0030, +7.2, 0.0042, -1.21

52 Keysight N2002A User’s Guide

Keysight Technologies Noise Source Test Set

N2002A

5 Using the Keysight N2002A Noise Source

Demonstration Software

This chapter describes how to setup and configure the Keysight N2002A Noise Source Demonstration Software.

Getting Started

This section describes the software requirements, the system requirements, and the required directory structure to setup and configure the Keysight N2002A Noise Source Demonstration Software.

The Keysight N2002A Noise Source Demonstration Software is written in Keysight VEE Pro Version 6.0 and is supplied as an VEE Pro Version 6.0 file (.vee) and as an VEE Run Time executable file (.vxe). The Keysight VEE Run Time executable file (.vxe) can not be modified. The Keysight VEE file need to have VEE Pro 6.0 installed before it can run. The file can be modified. The Keysight VEE Run Time Executable file requires VEE Pro 6.0 Run Time environment. The Keysight VEE Run Time executable file can not be modified.

NOTE The Keysight N2002A Noise Source Demonstration Software is supplied ‘as

is’. Keysight Technologies offers no support or warranty in the event of user modification and any problems arising as a result of user modification.

Additional Software Requirements

The IO libraries must be installed to allow instrument control.

System Requirements

The system requirements to run the Keysight N2002A Noise Source Demonstration Software are:

— PC with 120 MHz Pentium processor (266 MHz Pentium II or higher

recommended)

— Microsoft Windows 2000 or Windows XP

Using the Keysight N2002A Noise Source Demonstration Software Getting Started

— 64 MB RAM with Windows 2000/XP

— GPIB interface card (Keysight 82350A) or Keysight 82357A USB/GPIB

interface.

—IO Libraries

NOTE Keysight Technologies recommends that the System standby feature on your

Windows OS is disabled. This option is found under the power options in the Control Panel.

Test Equipment

In Chapter 2, “The Noise Source Calibration Process and Recommended Test

Equipment” there are tables listing the recommended equipment.

Limited substitution is supported when using the Keysight N2002A Noise Source Demonstration Software.

The Keysight N2002A Noise Source Demonstration Software was written specifically for the following Keysight test equipment:

ENR Measurement:

— N8975A Noise Figure Analyzer

— N2002A Noise Source Test Set

— 11713A Attenuator/Switch Driver

Directory Structure Required

Figure 5-1 shows the required directory structure you must create on the C:

drive of the computer. This allows you use to run the Keysight N2002A Noise Source Demonstration Software. This is required for both the versions of the software.

Figure 5-1 Directory Structure

54 Keysight N2002A User’s Guide

Using the Keysight N2002A Noise Source Demonstration Software Getting Started

NOTE Copy the files named agilent.gif and spark.gif from the logo directory

on the N2002A CD to the logo directory on the computer used to run the Keysight N2002A Noise Source Demonstration Software.

Opening the VEE Pro 6.0 (.vee) Software File

To start the Keysight N2002A Noise Source Demonstration Software you need to open the Keysight VEE Pro 6.0 program. To do this do the following:

Step 1. Open the file by clicking File Open from the CD.

Step 2. Select the file name (or use the default).

Step 3. Select the Debug/Run or the Play button icon ( ) or Cntl-G.

Figure 5-5 on page 61 shows the Main Start Up window.

Setting up the Address Drivers

On initial opening of the Keysight N2002A Noise Source Demonstration Software the GPIB controlled test equipment needs configured with their address drivers. This is explained in the following procedure:

Step 1. The initial time the program is ran a Caution, as shown in Figure 5-2, is

displayed informing you that a driver for the N8975A can not be found.

Figure 5-2 A VEE Driver Caution

NOTE If you do not have the required equipment connected when the Caution is

displayed, either enter a GPIB address for the equipment, or allow the address to remain set at 0.

Step 2. To add a driver, click OK to display the Instrument Properties box. You need to

enter the address of the N8975A.

This is the only data you need to enter.

Keysight N2002A User’s Guide 55

Using the Keysight N2002A Noise Source Demonstration Software Getting Started

Step 3. The address can be a three or four digit number and consists of the logical

unit of the GPIB card plus the address of the N8975A. Table 5-1 provides a list of default instrument address settings.

Step 4. Click OK when the correct address has been entered in the Instrument

Properties box.

Table 5-1 Default Addresses

Instrument GPIB Address GPIB Card Address

N8975A 08 708

Switch 11713A 28 728

8722 24 724

8753 16 716

Step 5. Another Caution is displayed informing you that a driver for the 11713A can

not be found. Enter the correct GPIB address.

Step 6. Save the file using the Save in VEE window when the file loading in complete.

Configuring the VEE Pro 6.0 Run Time File IO

Use the procedure to configure the IO.

Step 1. Select the Keysight VEE Pro 6.0 Run Time Config program.

Step 2. Select IO Configuration.

Step 3. Use Instrument.

Step 4. Add to create an entry for each piece of equipment. Use the instrument

names shown in Tab le 5-1 and enter the appropriate GPIB address.

Before running the Keysight N2002A Noise Source Demonstration Software

Before you run the Keysight N2002A Noise Source Demonstration Software ensure the test equipment is correctly connected. If a GPIB connection fails to establish a warning appears on the display, Figure 5-3 shows a typical warning. The equipment connections are shown in Figure 2-1 on page 24 for ENR Measurement. To perform an ENR Measurement the only equipment needed is the N8975A, 11713A, and N2002A.

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Using the Keysight N2002A Noise Source Demonstration Software Getting Started

Figure 5-3 Communication Warning!

NOTE Ensure the reference standard’s ENR table is loaded into the N8975A before

running the software. See Chapter 2’s “Loading the Reference Standard’s

ENR Data” on page 23 for more information on doing this.

If the reference standard is changed while you are running the software, ensure that the correct reference standard’s ENR table is loaded into the NFA.

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Using the Keysight N2002A Noise Source Demonstration Software The ENR Measurement Procedure

The ENR Measurement Procedure

The following procedure explains how to make an ENR measurement. Each step in the procedure is explained in greater detail in the referenced section. In the pdf file of this manual, each of the referenced sections has a link to return you to this procedure.

To start the procedure you must have the Main Start Up Window displayed, this is shown is Figure 5-5 on page 61.

Step 1. Enter the Test Details. The entered details are shown on the Measurement

displays.

The section, “Test Details” on page 62 explains this in detail.

Step 2. Select ENR Measurement on the Main Start Up Window.

The section, “ENR Measurement” on page 63 explains this in detail.

Step 3. Select a Measurement Reference Standard.

The section, “Selecting and Measuring the Reference Standard” on page 64 explains this in detail.

Step 4. Select the Reference Standard Type.

The section, “Selecting the Reference Standard” on page 66 explains this in detail.

Step 5. Enter ENR data for the selected Reference Standard.

Chapter 2’s section, “Loading the Reference Standard’s ENR Data” on

page 23 explains this in detail.

Step 6. Enter Uncertainty data of selected Reference Standard.

The section, “Selecting Reference Standard Measurement Uncertainty Data”

on page 69 explains this in detail.

Step 7. Measure the Reference Standard.

The section, “Performing Reference Standard Measurement” on page 69 explains this in detail.

Step 8. On the display are both items green?

If Yes, proceed to the next step. If No, repeat the steps again.

Step 9. Select the type of DUT to be measured.

The section, “Selecting the DUT to be Measured” on page 71 explains this in detail.

Step 10. Measure the DUT.

The section, “Measuring a DUT” on page 73 or “Making Multi Measurement

on a DUT” on page 77 explains this in detail.

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Step 11. Save the results.

Step 12. Copy data to SNS. The section, “Copying Data to SNS” on page 75 explains

this in detail.

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Running the Keysight N2002A Noise Source Demonstration Software

To start the Keysight VEE Pro 6.0 file use the Run or Start from within VEE Pro

6.0.

The Keysight VEE Pro 6.0 run time file is started using windows explorer.

When the Keysight N2002A Noise Source Demonstration Software is running the main window shown Figure 5-5 on page 61 is visible.

Ensure all the test equipment is powered up and allow to warm up for one hour. You also need to run the N8975A YTF Alignment routine before performing a measurements. The procedure to run the YTF alignment is as follows:

Step 1. Press the System key.

Step 2. Press the Alignment menu key.

Step 3. Press the Align YTF menu key. This menu key needs pressed a second time,

this is to avoid accidental damage.

Step 4. Press the Save YTF Alignment menu key when Alignment routine is complete.

NOTE Figure 5-4 is an example of the warning displayed if a N8975A has been

powered up for less than one hour. It is recommended that no measurements are made if this warning is shown.

Figure 5-4 A Warm Up Warning

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Figure 5-5 The Main Start Up Window Display

The options available to choose from are:

Test Details This allows to enter the details described in “Test Details” on page 65. After

these details are entered they are shown on the Measurement displays. The details are saved along with the measurement results. Entering these details is not required for correct operation.

ENR Measurement This selects the ENR display and allows you to configure and perform ENR

Measurements.

Quit Stops the software.

The other information displayed on the Main Start Up Window.

The central display is any information entered in the Test Detail. This includes the job number and the name of the engineer performing the measurement. The environmental conditions the measurement is performed under are also displayed.

The right hand portion of the display is information relating to the noise source under test (DUT). This includes the noise source manufacturer, the type of noise source, any options, and the noise source serial number.

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To return to “The ENR Measurement Procedure” on page 58, click the pdf hot-link.

Test Details

The test details are entered into the fields and are displayed on the Measurement displays. The Test Details display is shown in Figure 5-6. The test details are saved with the measurement results.

NOTE Entering these details is not required for correct operation.

Figure 5-6 Test Detail Display

The Test Detail fields are:

CSO Number This allows you to have traceability of the Job Number.

Engineer This allows you to have traceability of the Engineer.

Temperature This allows to enter the ambient temperature where the calibration is made.

The default value is 23.5 ⁰C.

Humidity This allows to enter the ambient humidity where the calibration is made. The

default value is 50.0%.

Clicking the OK button accepts the data entered in the display and returns to the Measurement display.

Clicking the Cancel button returns to the Measurement display without accepting the data. No data is shown on the Measurement displays.

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To return to “The ENR Measurement Procedure” on page 58, click the pdf hot-link.

ENR Measurement

The ENR measurement process is based on making a measurement using a noise source with known ENR values (The Reference Standard), then making another measurement on a noise source with unknown ENR values (the Device Under Test (DUT)). The DUT’s ENR values are now calculated on completion of the measurement.

The first step to make an ENR measurement is to select ENR Measurement from the Main Start Up Window. Figure 5-7 shows the ENR Measurement display.

NOTE Figure 5-4 on page 60 is an example of the warning displayed if a N8975A has

been powered up for less than one hour. It is recommended that no measurements are made if this warning is shown.

Figure 5-7 The ENR Measurement Display

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The options available to choose from are:

Select and Meas Standard

Select and Meas DUT

Set SNS Bias

This selects another display where you can configure and measure a reference standard.

This selects another display where you can configure and measure a device under test. The device under test (DUT) is the noise source you are measuring.

This selects a new display where a new SNS bias current can be entered.

Current

Return Returns you to the previous display.

The upper display is the information entered in the Test Details. This includes the job number and the name of the engineer performing the measurement. The environmental conditions the measurement is performed under are also displayed.

The two lower displays shows information relating to the noise source used as the reference standard and the noise source (DUT) being measured. This includes the noise source manufacturer, the type of noise source, any options, and the noise source serial number.

To return to “The ENR Measurement Procedure” on page 58, click the pdf hot-link.

Selecting and Measuring the Reference Standard

Clicking the Select and Meas Standard button on the ENR Measurement display, produces a display similar to Figure 5-8 on page 65.

This process step must be followed before a DUT can be measured.

1. A reference standard must be selected and a measurement performed on it.

2. The ENR measurement uncertainty data must be entered for the reference standard.

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Figure 5-8 Select and Measure Reference Standard

The options available to choose from are:

Select Std Type This selects another display allowing you to enter the reference standard’s

details.

ENR Uncertainty Data

Measure Reference

This allows access to other displays allowing you to enter and manipulate the reference standard’s ENR measurement uncertainty data.

This initiates measurement of the reference standard. A reference standard must be selected before a measurement can be made.

Standard

Return Returns you to the previous display.

The upper display shows information relating to the reference standard. This includes the noise source manufacturer, the type of noise source, any options, and the noise source serial number.

The lower display shows the current status of data relating to the reference standard.

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Standard Meas Data Available?

Standard Uncertainty Data Available?

Selecting the Reference Standard

A DUT measurement is not possible until the reference standard’s uncertainty date has been entered and the measurement has been made on the reference standard. This indicator is red until the measurements have been made. When these measurements are complete the indicator is green. The indicator returns to red when a new reference standard is selected.

A DUT measurement is not possible until the ENR measurement uncertainty values for the reference standard are available. This indicator is red until the measurement uncertainty values are available. When these measurements uncertainty values are available the indicator is green. The indicator returns to red when a new reference standard is selected.

To return to “The ENR Measurement Procedure” on page 58, click the pdf hot-link.

A reference standard must be selected before proceed ing. See “Reference

Standard Noise Source Selection” on page 28 for more information on

selecting the reference standard.

Clicking the Select Std Type from the Select and Measure Reference Standard window shows a display similar to Figure 5-9.

Figure 5-9 Select Reference Standard Type and Serial Number

The options available to choose from are:

Select Type This allows you to select the type of reference standard. The options to choose

from are 346A, 346B, 346C, N4000A, N4001A, N4002A, and Other. The Other option covers all other manufacturer’s noise sources or Keysight noise sources operating at frequencies other than the standard cardinal values. See

“Selecting Other” on page 79 for a further explanation.

Option A list of Options available are shown. The available options depend on the type

of reference standard selected.

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Serial Number The Serial Number of the reference standard is entered in this field.

Clicking the OK button accepts the entered data and returns you to the previous display.

Clicking the Cancel button ignores any changes and returns you to the previous display.

To return to “The ENR Measurement Procedure” on page 58, click the pdf hot-link.

Entering Reference Standard Uncertainty Data

A DUT measurement is not possible until the reference standard’s ENR measurement uncertainty data is available. This indicator is red until the measurement uncertainty data is available. When the measurement uncertainty data is available the indicator is green. The indicator returns to red when a new reference standard is selected. Figure 5-10 shows a typical display before uncertainty date has been entered.

Figure 5-10 Reference Standard ENR Uncertainty Data

The options available to choose from are:

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Enter Uncertainty Values

Selecting this produces a display of the number of frequency points in the reference standard selected. There are three possible displays:

1. Covering the Keysight 346A, 346B, N4000A, and N4001A noise sources (10.0 MHz to 18.0 GHz). This display type is shown in Figure 5-11.

2. Covering the Keysight 346C and N4002A noise sources (10.0 MHz to 26.5 GHz).

3. Covering Other noise source types and frequency points. See “Selecting

Other” on page 79 for an explanation of this.

Save Uncertainty Data

Select this to save the reference standard’s measurement uncertainty data to a file. This key is unavailable until Uncertainty data has been entered. The file is saved to C:\N2002A\Standard\Uncertainty Values\.

The measurement uncertainty data is saved with the model number and serial number of the reference standard.

Load Uncertainty Data

NOTE Ensure the reference standard’s model number and serial number match the

Select this if the reference standard’s uncertainty data is available on file (C:\N2002A\Standard\Uncertainty Values\).

values in the saved data.

Return Returns you to the Select and Measure Standard display.

The upper display shows the current reference standard’s data. The data is the manufacturer, noise source model, option, and serial number.

The lower display indicates if the uncertainty data is valid for the selected reference standard. The indicator is green when the data is valid.

A DUT measurement is not possible until the ENR measurement uncertainty values for the reference standard are available. The indicator is red until measurement uncertainty values are available. When ENR measurement uncertainty data is available for the reference standard, and the indicator on the Standard uncertainty data available? display is green. The indicator returns to red when a new reference standard is selected.

NOTE Measurement uncertainty data need not be entered before performing a

measurement on the reference standard. However, measurement uncertainty data for the reference standard has to be available before a DUT measurement can be made.

To return to “The ENR Measurement Procedure” on page 58, click the pdf hot-link.

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Selecting Reference Standard Measurement Uncertainty Data

Clicking Enter Uncertainty Values on the Reference Stand ard ENR Uncertainty Data displays a table of fields similar to Figure 5-11. Data must be entered in the fields or measurements cannot be made. After the uncertainty data has been entered, click OK. This returns you to the previous display and the Standard uncertainty data available? indicator is now green.

Figure 5-11 Typical Reference Standard ENR Uncertainty Data

To return to “The ENR Measurement Procedure” on page 58, click the pdf hot-link.

Performing Reference Standard Measurement

When a reference standard has been selected with its ENR table data and Uncertainty Data entered, a measurement can be made. The measurement process is started by clicking the Measure Reference Standard button. This button is on the Select and Measure Standard display. The measurement results are not displayed during this process. However, a Measuring frequency point counter, shown in Figure 5-12 on page 70, is displayed indicating a

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measurement is being performed. When testing is complete the Measurement

Complete? indicator changes from red to green. Click Return to return to the Select and Measure Reference Standard display.

NOTE A Reference Standard’s measurement need not be repeated before every DUT

measurement. However, Keysight Technologies recommend for best result a Reference Standard’s has been performed regularly.

Figure 5-12 Measure Reference Standard Display

To return to “The ENR Measurement Procedure” on page 58, click the pdf hot-link.

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Selecting the DUT to be Measured

When the reference standard measurement is complete, the DUT can be measured. Clicking Select and Meas DUT on the ENR Measurement display shows a similar display to Figure 5-13 on page 71.

Figure 5-13 Select and Measure DUT

The options available to choose from are:

Select DUT This selects another display where you can enter information about the device

under test (DUT).

DUT Measurement Starts a single DUT measurement. The DUT is measured only on one occasion,

at all the designated frequency points.

DUT Multi Measurement

Keysight N2002A User’s Guide 71

Starts a multiple DUT measurement. The DUT can be repeatedly measured, up to a maximum of twelve repeats, at all the designated frequency points.

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Return Returns you to the previous display.

The upper display is any information entered in the Test Details. This includes the job number and the name of the engineer performing the measurement. The environmental conditions the measurement is performed under are also displayed.

To return to ““The ENR Measurement Procedure” on page 58, click the pdf hot-link.

Selecting the DUT

NOTE Any noise source can be selected as a reference standard. However, a

warning is displayed if you measure a DUT with a different frequency range. For example, if you use a 346B as a reference standard and attempt to measure a 346C a caution is displayed stating that the measurements are limited to 18.0 GHz.

Figure 5-14 Select DUT Type and Serial Number

The options available to choose from are similar to the “Selecting and

Measuring the Reference Standard” on page 64.

Select Type This allows you to choose the DUT type being measured. The choices are 346A,

346B, 346C, N4000A, N4001A, N4002A, and Other.

Other allows you to test other manufacturer’s noise sources or Keysight noise sources using at non-standard frequency values. See “Selecting Other” on

page 79 for an explanation of this.

Option A list of available options are shown. The options available depend on the type

of DUT selected.

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Serial Number The Serial Number of the DUT is entered in this field.

Clicking the OK button accepts the data that has been entered and returns you to the Select and Measure DUT display. This data is displayed in the window.

Clicking the Cancel button ignores the changes and returns you to the Select and Measure DUT display.

To return to “The ENR Measurement Procedure” on page 58, click the pdf hot-link.

Measuring a DUT

Selecting the DUT Measurement button starts a single DUT measurement and displays the results as they are completed. A measurement is made on the DUT at the first measurement frequency point. The DUT’s ENR and ENR measurement uncertainty results are calculated for the DUT at this frequency point. The results are displayed with the frequency point the measurement was made at. The process is repeated for all the measurement frequency points. The display is updated with results, one frequency point at a time. When the final result is obtained a display similar to Figure 5-15 is presented.

If a DUT measurement is not possible a warning message is displayed. The warning message indicates the reason the DUT measurement is not possible.

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Figure 5-15 An Example of Result Data

The options available to choose from are:

Save Results This option is not available until the DUT measurement is completed. The ENR

values and measurement uncertainty values are saved with the measurement frequency points. Also, saved are the DUT’s identification details, the reference standard’s details, the job details, the environmental conditions the test was performed in, the date of the test, and the software revision. An example of a test result file is shown in Figure 5-16.

Test results are saved as a text files to:

C:\N2002A\DUT Test Results\ENR\

The results are saved under an automatically generated filename. The filename is made up from the DUT model number, the DUT serial number, and the date the test results were made, for example, N4002A_US4110000_yyyymmdd_hh_mm_ss.txt.

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Figure 5-16 Example of a Single ENR Measurement Result Data

Copy Data to SNS This option is only available if the DUT is an Keysight N400xA series noise

source and the DUT measurement is complete. The process is explained in

“Copying Data to SNS” on page 75.

Return Returns you to the ENR Measurement display.

To return to “The ENR Measurement Procedure” on page 58, click the pdf hot-link.

Copying Data to SNS

Figure 5-17 shows a warning message displayed after clicking Copy Data to

SNS, click OK if you want to continue.

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Figure 5-17 Warning Message for SNS Erased Data

The Keysight N400xA SNS’s have ENR and reflection coefficient data values stored in their EEPROM. New data can be written to the SNS when an ENR measurement has been completed. The data written to the SNS consists of the ENR result, the ENR measurement uncertainty result and the reflection coefficient measurement result data.

There are two options for the reflection coefficient measurement result data. The Copy Data to SNS function shows the Figure 5-18 display.

Figure 5-18 Saving SNS Result Data

NOTE On an SNS, Reflection Coefficient data must be entered.

The options available to choose from are:

Manual Entry The results for reflection coefficient magnitude and phase must be entered

manually. Figure 5-19 shows a typical window allowing you to enter the Reflection Magnitude Values for the DUT Off condition. You are presented with three other windows, namely Reflection Magnitude Values for the DUT On, Reflection Phase Values for the DUT Off, and Reflection Phase Values for the DUT On.

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Figure 5-19 Manual VSWR Entry Window

Default Values If no reflection coefficient measurement data is available for the DUT, default

values are used. This option uses the ENR measurement results but all reflection coefficient measurement data is set to zero.

Cancel Returns you to the DUT ENR Measurement display.

To return to “The ENR Measurement Procedure” on page 58, click the pdf hot-link

Making Multi Measurement on a DUT

DUT Multi Measurement is similar to DUT Measurement, but the measurement can be repeated up to a maximum of twelve times. This allows you, for example, to look for any repeatability effects. Clicking the DUT Multi Measurement button on the Select and Measure DUT window starts the measurement process. When the final result is obtained a display similar to

Figure 5-20 is presented.

The number of required measurement repeats are entered at the start of the measurement, up to a maximum of twelve. A measurement is made on the DUT at the first measurement frequency point. The DUT’s ENR results are calculated for the DUT at this frequency point. The ENR measurement result is the only

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value calculated and the result is displayed with the frequency point the measurement was made at. When the measurement is completed, you are prompted to continue with the next measurement. The previous measurement results are cleared from the display and DUT measurement starts at the first measurement frequency point.

The process is repeated for all measurement frequency points. The display is updated with the DUT’s ENR results for one frequency point at a time.

Figure 5-20 ENR Multi Measurement Result Data

The options available to choose from are:

Save Results Measurement results can be saved as a comma separated values file (.csv)

which can then be imported into Microsoft Excel for analysis.

Figure 5-21 on page 79 is an example of the measurement results data

displayed on a spreadsheet.

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Figure 5-21 Example of ENR Multi Measurement Result Data as CSVs

Copy data to SNS Data can be copied to an SNS DUT, but it must be entered manually.

Return Returns you to the ENR Measurement display.

To return to “The ENR Measurement Procedure” on page 58, click the pdf hot-link.

Selecting Other

The Other option covers all other manufacturer’s noise sources or Keysight noise sources operating at frequencies other than the standard cardinal values. The number of data points is controlled by the number of Frequency/ENR pairs in the NFA. Before performing a measurement using reference standard of type Other, an ENR table containing the measurement frequencies and ENR values to be used must be created in the NFA.

The display contains one field for each measurement frequency. The ENR measurement uncertainty for the reference standard must be entered manually for each frequency point. The interpolated values are also calculated manually.

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Selecting Other as the DUT type produces the display similar to Figure 5-22.

NOTE The NFA can only store a maximum of 81 Frequency/ENR pairs.

NOTE Any DUT can be measured using any reference standard. However,

measurement is limited to 18.0 GHz if the reference standard, or DUT, is an Keysight 346A, 346B, N4000A, or N4001A.

Figure 5-22 Typical Other Display

The data is entered manually in these fields. The data required is:

Manufacturer The DUT manufacturer.

Model Number The DUT model number.

Option Any DUT options.

Serial Number The DUT serial number.

Clicking the OK button accepts the data that has been entered. Clicking the Cancel button ignores the changes and returns you to the ENR Measurement display.

Figure 5-23 is a typical display of the Reference Standard’s ENR Uncertainty

Values.

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Figure 5-23 Enter Uncertainly Values for Other

Setting SNS Bias Current

When repairing an SNS, certain replacement parts are suppled with a value of bias current. This information should be programmed to make the SNS work correctly.

CAUTION Performing a SNS Bias Current setting wrongly can make your SNS

inoperatable. Keysight Technologies recommend this is only performed by trained operators. If you attempt to do this a warning is displayed similar to

Figure 5-24 on page 82.

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Figure 5-24 SNS Bias Current Warning

Selecting OK displays a window similar to Figure 5-25 on page 82.

Select the SNS type you want to set the bias current on and enter the value of bias current supplied with the new assembly in the Enter Supplied Current Value field.

Figure 5-25 SNS Bias Current Source Selection

After the SNS Bias Current setting is complete, you need to measure the SNS to confirm the ENR values are within the published specifications.

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N2002A

A: Test Records for the 346A

This appendix provides test records for you to photocopy and use when performing each calibration and verification test. As the reflection coefficient and phase test use two VNAs, the test records are provided with a convenient break point at 3.0 GHz.

Test Records for the 346A Reflection Coefficient Magnitude and Phase Test Record

Reflection Coefficient Magnitude and Phase Test Record

Frequency Range (MHz)

10.0 to 30.0 ≤0.13

30.0 to

3000.0

3000.0 to

5000.0

5000.0 to

18000.0

Freq. (MHz) Source OFF Reflection

Coefficient

Magnitude Phase Magnitude Phase

10.0 ≤0.13

100.0 ≤0.07

1000.0 ≤0.07

2000.0 ≤0.07

3000.0 ≤0.07

4000.0 ≤0.07

Source ON Reflection Coefficient

Spec. Pass/

≤0.07

≤0.11

Fail

5000.0 ≤0.07

6000.0 ≤0.11

7000.0 ≤0.11

8000.0 ≤0.11

9000.0 ≤0.11

10000.0 ≤0.11

11000.0 ≤0.11

12000.0 ≤0.11

13000.0 ≤0.11

14000.0 ≤0.11

15000.0 ≤0.11

16000.0 ≤0.11

17000.0 ≤0.11

18000.0 ≤0.11

84 Appendix A

Test Records for the 346A Excess Noise Ratio (ENR) Test Record

Excess Noise Ratio (ENR) Test Record

Frequency (MHz) Standard ENR1 (dB) Stand ard Y1 (Lin) DUT Y2 (Lin) DUT ENR2 (dB)

10.0

100.0

1000.0

2000.0

3000.0

4000.0

5000.0

6000.0

7000.0

8000.0

9000.0

10000.0

11000.0

12000.0

13000.0

14000.0

15000.0

16000.0

17000.0

18000.0

Appendix A 85

Test Records for the 346A Uncertainty Test Record

Uncertainty Test Record

Frequency (MHz) (UcENR1)

Standard ENR

10.0 0.0785

100.0 0.0785

1000.0 0.0905

2000.0 0.0905

3000.0 0.0726

4000.0 0.0726

5000.0 0.0726

6000.0 0.0726

7000.0 0.0800

8000.0 0.0800

9000.0 0.1076

10000.0 0.1076

11000.0 0.1076

Uncertainty (dB)

(UcSys) System Uncertainty (dB)

(UcENR2) DUT ENR

Uncertainty (dB)

12000.0 0.1076

13000.0 0.1211

14000.0 0.1211

15000.0 0.1211

16000.0 0.1211

17000.0 0.1211

18000.0 0.1211

86 Appendix A

Keysight Technologies Noise Source Test Set

N2002A

B: Test Records for the 346B

Test Records for the 346B Reflection Coefficient Magnitude and Phase Test Record

Reflection Coefficient Magnitude and Phase Test Record

Frequency Range (MHz)

10.0 to 30.0 ≤0.13

30.0 to

3000.0

3000.0 to

5000.0

5000.0 to

18000.0

Freq. (MHz) Source OFF Reflection

Coefficient

Magnitude Phase Magnitude Phase

10.0 ≤0.13

100.0 ≤0.07

1000.0 ≤0.07

2000.0 ≤0.07

3000.0 ≤0.07

4000.0 ≤0.07

Source ON Reflection Coefficient

Spec. Pass/

≤0.07

≤0.11

Fail

5000.0 ≤0.07

6000.0 ≤0.11

7000.0 ≤0.11

8000.0 ≤0.11

9000.0 ≤0.11

10000.0 ≤0.11

11000.0 ≤0.11

12000.0 ≤0.11

13000.0 ≤0.11

14000.0 ≤0.11

15000.0 ≤0.11

16000.0 ≤0.11

17000.0 ≤0.11

18000.0 ≤0.11

88 Appendix B

Test Records for the 346B Excess Noise Ratio (ENR) Test Record

Excess Noise Ratio (ENR) Test Record

Frequency (MHz) Standard ENR1 (dB) Stand ard Y1 (Lin) DUT Y2 (Lin) DUT ENR2 (dB)

10.0

100.0

1000.0

2000.0

3000.0

4000.0

5000.0

6000.0

7000.0

8000.0

9000.0

10000.0

11000.0

12000.0

13000.0

14000.0

15000.0

16000.0

17000.0

18000.0

Appendix B 89

Test Records for the 346B Uncertainty Test Record

Uncertainty Test Record

Frequency (MHz) (UcENR1)

Standard ENR

10.0 0.0785

100.0 0.0785

1000.0 0.0905

2000.0 0.0905

3000.0 0.0726

4000.0 0.0726

5000.0 0.0726

6000.0 0.0726

7000.0 0.0800

8000.0 0.0800

9000.0 0.1076

10000.0 0.1076

11000.0 0.1076

Uncertainty (dB)

(UcSys) System Uncertainty (dB)

(UcENR2) DUT ENR

Uncertainty (dB)

12000.0 0.1076

13000.0 0.1211

14000.0 0.1211

15000.0 0.1211

16000.0 0.1211

17000.0 0.1211

18000.0 0.1211

90 Appendix B

Keysight Technologies Noise Source Test Set

N2002A

C: Test Records for the 346C

Test Records for the 346C Reflection Coefficient Magnitude and Phase Test Record

Reflection Coefficient Magnitude and Phase Test Record

Frequency Range (MHz)

10.0 to

3000.0

3000.0 to

18000.0

18000.0 to

26500.0

Freq. (MHz) Source OFF Reflection

Coefficient

Magnitude Phase Magnitude Phase

10.0 ≤0.11

100.0 ≤0.11

1000.0 ≤0.11

2000.0 ≤0.11

3000.0 ≤0.11

4000.0 ≤0.11

5000.0 ≤0.11

Source ON Reflection Coefficient

Spec. Pass/

≤0.11

≤0.15

Fail

6000.0 ≤0.11

7000.0 ≤0.11

8000.0 ≤0.11

9000.0 ≤0.11

10000.0 ≤0.11

11000.0 ≤0.11

12000.0 ≤0.11

13000.0 ≤0.11

14000.0 ≤0.11

15000.0 ≤0.11

16000.0 ≤0.11

17000.0 ≤0.11

18000.0 ≤0.11

19000.0 ≤0.15

20000.0 ≤0.15

92 Appendix C

Test Records for the 346C Reflection Coefficient Magnitude and Phase Test Record

Frequency Range (MHz)

Freq. (MHz) Source OFF Reflection

Coefficient

21000.0 ≤0.15

22000.0 ≤0.15

23000.0 ≤0.15

24000.0 ≤0.15

25000.0 ≤0.15

26000.0 ≤0.15

26500.0 ≤0.15

Source ON Reflection Coefficient

Spec. Pass/

Fail

Appendix C 93

Test Records for the 346C Excess Noise Ratio (ENR) Test Record

Excess Noise Ratio (ENR) Test Record

Frequency (MHz) Standard ENR1 (dB) Stand ard Y1 (Lin) DUT Y2 (Lin) DUT ENR2 (dB)

10.0

100.0

1000.0

2000.0

3000.0

4000.0

5000.0

6000.0

7000.0

8000.0

9000.0

10000.0

11000.0

12000.0

13000.0

14000.0

15000.0

16000.0

17000.0

18000.0

19000.0

20000.0

21000.0

22000.0

23000.0

24000.0

25000.0

26000.0

26500.0

94 Appendix C

Test Records for the 346C Uncertainty Test Record

Uncertainty Test Record

Frequency (MHz) (UcENR1)

Standard ENR

10.0 0.0785

100.0 0.0785

1000.0 0.0905

2000.0 0.0905

3000.0 0.0726

4000.0 0.0726

5000.0 0.0726

6000.0 0.0726

7000.0 0.0800

8000.0 0.0800

9000.0 0.1076

10000.0 0.1076

11000.0 0.1076

12000.0 0.1076

Uncertainty (dB)

(UcSys) System Uncertainty (dB)

(UcENR2) DUT ENR

Uncertainty (dB)

13000.0 0.1211

14000.0 0.1211

15000.0 0.1211

16000.0 0.1211

17000.0 0.1211

18000.0 0.1211

19000.0

20000.0

21000.0

22000.0

23000.0

24000.0

25000.0

26000.0

0.1491

26500.0 0.1491

Appendix C 95

Test Records for the 346C Uncertainty Test Record

96 Appendix C

Keysight Technologies Noise Source Test Set

N2002A

D: Test Records for the N4000A

Test Records for the N4000A Reflection Coefficient Magnitude and Phase Test Record

Reflection Coefficient Magnitude and Phase Test Record

Frequency Range (MHz)

10.0 to

1500.0

1500.0 to

3000.0

3000.0 to

7000.0

7000.0 to

18000.0

Freq. (MHz) Source OFF Reflection

Coefficient

Magnitude Phase Magnitude Phase

10.0 ≤0.02

100.0 ≤0.02

1000.0 ≤0.02

2000.0 ≤0.02

3000.0 ≤0.02

4000.0 ≤0.06

Source ON Reflection Coefficient

Spec. Pass/

≤0.02

≤0.06

≤0.10

Fail

5000.0 ≤0.06

6000.0 ≤0.06

7000.0 ≤0.06

8000.0 ≤0.10

9000.0 ≤0.10

10000.0 ≤0.10

11000.0 ≤0.10

12000.0 ≤0.10

13000.0 ≤0.10

14000.0 ≤0.10

15000.0 ≤0.10

16000.0 ≤0.10

17000.0 ≤0.10

18000.0 ≤0.10

98 Appendix D

Used Agilent Agilent Used N2002A Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Notices

General Safety Information

Safety Symbols

Table of Co n tents

1 Using the N2002A

Introduction

Recommended Test Equipment

Description

Operation

Maintenance

N2002A Verification Test

General Specifications

Replaceable Parts

Service

Contacting Keysight Technologies

The Calibration Process

Calibration Cycle

Test Descriptions

Excess Noise Ratio (ENR dB)

Loading the Reference Standard’s ENR Data

Overview of the ENR Measurement Procedure

The Test Equipment Connection Diagrams for ENR Measurements

ENR Specifications

Reflection Coefficient Magnitude and Phase

Reference Standard Noise Source Selection

Recommended Test Equipment

3 Using the Manual Calibration Procedure

Introduction

Before You Start

Recording the Test Results

Failure During the Test Procedures

ENR Manual Procedure

The Equations

System Uncertainty Values

Reflection Coefficient Manual Procedure

Calibrating the 8753

Measuring the DUT over 1st Frequency Range

Calibrating the 8722

Measuring the DUT over 1st Frequency Range

Introduction

Equipment Required

Data Programming Process

Formatting the Data

Editing the Data File

Programming the Data File into the SNS

Example

Getting Started

Additional Software Requirements

System Requirements

Test Equipment

Directory Structure Required

Opening the VEE Pro 6.0 (.vee) Software File

Setting up the Address Drivers

Configuring the VEE Pro 6.0 Run Time File IO

Before running the Keysight N2002A Noise Source Demonstration Software

The ENR Measurement Procedure

Running the Keysight N2002A Noise Source Demonstration Software

Test Details

ENR Measurement

Selecting and Measuring the Reference Standard

Selecting the Reference Standard

Entering Reference Standard Uncertainty Data

Selecting Reference Standard Measurement Uncertainty Data

Performing Reference Standard Measurement

Selecting the DUT to be Measured

Selecting the DUT

Measuring a DUT

Copying Data to SNS

Making Multi Measurement on a DUT

Selecting Other

Setting SNS Bias Current

Reflection Coefficient Magnitude and Phase Test Record

Excess Noise Ratio (ENR) Test Record

Uncertainty Test Record

Reflection Coefficient Magnitude and Phase Test Record

Excess Noise Ratio (ENR) Test Record