Agilent Technologies NFA Series Manual de uso y cuidado

Noise Figure Analyzers

NFA Series

Performance Verification and

Calibration Guide

The specifications in this manual are applicable to models having

Serial Prefix GB4446 and greater.

Manufacturing Part Number: N8973-90012

January 2011

Supersedes November 2004

Safety Notices

The information contained in this document is subject to change without notice.

Agilent Technologies makes no warranty of any kind with regard to this material,

including but not limited to, the implied warranties of merchantability and fitness

for a particular purpose. Agilent Technologies shall not be liable for errors contained

herein or for incidental or consequential damages in connection with the furnishing,

performance, or use of this material.

The following safety symbols are used throughout this manual. Familiarize yourself

with the symbols and their meaning before operating this instrument.

WARNING Warning denotes a hazard. It calls attention to a procedure which, if not

correctly performed or adhered to, could result in injury or loss of life. Do not

proceed beyond a warning note until the indicated conditions are fully

understood and met.

CAUTION Caution denotes a hazard. It calls attention to a procedure that, if not correctly

performed or adhered to, could result in damage to or destruction of the product. Do

not proceed beyond a caution sign until the indicated conditions are fully understood

and met.

NOTE Note calls out special information for the user’s attention. It provides operational

information or additional instructions of which the user should be aware.

iii

General Safety Information

The following general safety precautions must be observed during all phases of

operation, service, and repair of this instrument. Failure to comply with these

precautions or with specific warnings elsewhere in this manual violates safety

standards of design, manufacture, and intended use of the instrument. Agilent

Technologies assumes no liability for the customer’s failure to comply with these

requirements.

DO NOT operate the product in an explosive atmosphere or in the presence of

flammable gasses or fumes.

DO NOT use repaired fuses or short-circuited fuseholders: For continued protection

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

rating and type. Disconnect product from mains supply voltage before replacing

fuse.

DO NOT perform procedures involving cover or shield removal unless you are

qualified to do so: Operating personnel must not remove equipment covers or

shields. Procedures involving the removal of covers and shields are for use by

service-trained personnel only.

DO NOT service or adjust alone: Under certain conditions, dangerous voltages may

exist even with the equipment switched off. To avoid dangerous electrical shock,

service personnel must not attempt internal service or adjustment unless another

person, capable of rendering first aid and resuscitation, is present.

DO NOT operate damaged equipment: Whenever it is possible that the safety

protection features built into this product have been impaired, either through

physical damage, excessive moisture, or any other reason, REMOVE POWER and

do not use the product until safe operation can be verified by service-trained

personnel. If necessary, return the product to an Agilent Technologies Sales and

Service Office for service and repair to ensure the safety features are maintained.

DO NOT substitute parts or modify equipment: Because of the danger of

introducing additional hazards, do not install substitute parts or perform any

unauthorized modification to the product. Return the product to an Agilent

Technologies Sales and Service Office for service and repair to ensure the safety

features are maintained.

WARNING This is a Safety Class 1 Product (provided with a protective earth ground

incorporated in the power cord). The mains plug shall only be inserted in a

socket outlet provided with a protected earth contact. Any interruption of the

protective conductor inside or outside of the product is likely to make the

product dangerous. Intentional interruption is prohibited.

WARNING If this product is not used as specified, the protection provided by the

equipment could be impaired. This product must be used in a normal condition

(in which all means for protection are intact) only.

CAUTION This product is designed for use in INSTALLATION CATEGORY II and

POLLUTION DEGREE 2, per IEC 61010 Second Edition and 664 respectively.

Trademark Acknowledgement

Microsoft®is a US registered trademark of Microsoft Corp.

Updated Information

Where to Find the Latest Information

Documentation is updated periodically. For the latest information about the NFA

Noise Figure Analyzer Series, including firmware upgrades and application

information, please visit the following Internet URL:

http://www.agilent.com/find/nf/

Lifting and Carrying

Use the handle for lifting or carrying the unit.

Before attempting to lift or carry the instrument consider the following basic lifting

techniques to help avoid personal injury.

Using one arm to lift instrument.

• BRACE your body with the opposite arm, if possible.

• Reach for the instrument - bend your knees and waist, and keep your back

straight.

• GRASP the instrument firmly - using the handle.

• LIFT with your legs, using the free arm for balance.

• KEEP your shoulders level - switch hands regularly.

Electromagnetic Compatibility

This product conforms with the protection requirements of European Council

Directive 89/336/EEC for Electromagnetic Compatibility (EMC).

The conformity assessment requirements have been met using the technical

Construction file route to compliance, using EMC test specifications EN

55011:1991 (Group 1, Class A) and EN 50082-1:1992.

In order to preserve the EMC performance of the product, any cable which becomes

worn or damaged must be replaced with the same type and specification.

See “Declaration of Conformity” on page vi.

Radio-Frequency Electromagnetic Field

Immunity

When a 3 Vm-1 radio-frequency electromagnetic field is applied to the Noise Figure

Analyzer according to IEC 61000-4-3:1995, degradation of performance may be

observed. When the frequency of the incident field matches the frequency of a

measured noise figure or gain, the values displayed will deviate from those

expected. This phenomenon will only affect that specific frequency, and the

Analyzer will continue to perform to specification at all other frequency sample

points.

The Noise Figure Analyzer may be unable to calibrate a chosen frequency sample

point, if the frequency matches that of an incident electromagnetic field.

Declaration of Conformity

A copy of the Manufacturer’s European Declaration of Conformity for this

instrument can be obtained by contacting your local Agilent Technologies sales

representative.

Declaration of Compliance

This instrument has been designed and tested in accordance with CAN/CSA

22.2 No. 61010-1-04 & UL Std. No. 61010-1 (2nd Edition).

Contents

vii

1. Preparing for Calibration and Performance Verification Test

Purpose of Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Calibration Cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Before You Start. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Front and Rear Panel Symbols. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Recording the Test Results. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Recommended Test Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Performance Verification and Adjustment Procedures . . . . . . . . . . . . . . . . . . . . . .11

2. Test Descriptions

10 MHz Out Frequency Reference Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Test Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Test Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Related Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Required Test Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Test Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Test Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

10 MHz Out Frequency Reference Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . .20

Test Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

Required Test Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

Test Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

Test Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

Input VSWR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

Test Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

VSWR Test Specification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

Related Adjustments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

Required Test Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

Test Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

viii

Contents

Test Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Frequency Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Test Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Test Specification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Related Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Required Test Equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Test Setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Test Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Noise Source Supply Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Test Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Test Specification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Related Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Required Test Equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Test Setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Test Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Noise Figure Range and Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Test Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Test Specification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Related Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Required Test Equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

Test Setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

Test Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

Gain Measurement Uncertainty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

Test Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

Test Specification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

Related Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

Required Test Equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

Test Setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

Test Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

Instrument Noise Figure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

Contents

Test Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72

Test Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72

Related Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .75

Required Test Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .75

Test Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76

Test Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .77

Measurement Jitter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .81

Test Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .81

Test Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .81

Related Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .81

Required Test Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .82

Test Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .82

Test Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .83

3. Technical Specifications

Frequency. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .90

Noise Figure and Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .92

RF Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .95

Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .97

Display. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .99

Display units. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .99

Connectivity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .100

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .100

Noise Source Drive Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .100

General Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .101

A. Model N8973A: Test Records

10MHz Out Frequency Reference Accuracy Test Record. . . . . . . . . . . . . . . . . . .106

Contents

Input VSWR Test Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107

Frequency Accuracy Test Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

Noise Source Supply Accuracy Test Record. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109

Noise Figure Range and Accuracy Test Record . . . . . . . . . . . . . . . . . . . . . . . . . . 110

Results: 4.5 - 6.5dB Noise Source ENR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110

Results: 14 - 17dB Noise Source ENR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

Results: 20 - 22dB Noise Source ENR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112

Gain Measurement Uncertainty Test Record. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113

Instrument Noise Figure Test Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114

Measurement Jitter Test Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

B. Model N8974A: Test Records

10MHz Out Frequency Reference Accuracy Test Record . . . . . . . . . . . . . . . . . . 118

Input VSWR Test Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119

Frequency Accuracy Test Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120

Noise Source Supply Accuracy Test Record. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121

Noise Figure Range and Accuracy Test Record . . . . . . . . . . . . . . . . . . . . . . . . . . 122

Results: 4.5 - 6.5dB Noise Source ENR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122

Results: 14 - 17dB Noise Source ENR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .123

Results: 20 - 22dB Noise Source ENR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .124

Gain Measurement Uncertainty Test Record. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125

Instrument Noise Figure Test Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126

Measurement Jitter Test Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127

C. Model N8975A: Test Records

10MHz Out Frequency Reference Accuracy Test Record . . . . . . . . . . . . . . . . . . 130

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