Agilent Technologies NFA Series Manual de usuario

Noise Figure Analyzers

NFA Series

Quick Reference Guide

Manufacturing Part Number: N8972-90003

May 2000

Safety Notices

This product and related documentation must be reviewed for

familiarization with safety markings and instructions before use.

This instrument has been designed and tested in accordance with IEC

Publication 61010-1+A1+A2:1991 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.

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 instrument. Do not proceed beyond a caution sign until

the indicated conditions are fully understood and met.

iii

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.

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 documentation.

This symbol is used to mark the on position of the

power line switch.

This symbol is used to mark the standby position of the

power line switch.

This symbol indicates that the input power required is

AC.

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

earthing ground incorporated in the power cord). The mains

plug shall only be inserted in a socket outlet provided with a

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.

WARNING No operator serviceable parts inside. Refer servicing to qualified

personnel. To prevent electrical shock do not remove covers.

WARNING For continued protection against fire hazard, replace line fuses

only with the same type and ratings (115V range; type F 5A 125V;

239V range F 5A 250V). The use of other fuses or materials is

prohibited.

CAUTION To prevent electrical shock, disconnect the instrument from the mains

(line) before cleaning. Use a dry cloth or one slightly dampened with

water to clean the external case parts. Do not attempt to clean internally.

Environmental requirements: This product is designed for indoor use

only and to meet the following environmental conditions:

• Operating temperature: 0°Cto+55°C

• Operating humidity: <95% relative

• Altitude: up to 4500 m

Warranty

This Agilent Technologies instrument product is warranted against

defects in material and workmanship for a period of three years from

date of shipment. During the warranty period, Agilent Technologies

Company will, at its option, either repair or replace products which prove

to be defective.

For warranty service or repair, this product must be returned to a service

facility designated by Agilent Technologies. Buyer shall prepay shipping

charges to Agilent Technologies and Agilent Technologies shall pay

shipping charges to return the product to Buyer. However, Buyer shall

pay all shipping charges, duties, and taxes for products returned to

Agilent Technologies from another country.

Agilent Technologies warrants that its software and firmware designated

by Agilent Technologies for use with an instrument will execute its

programming instructions when properly installed on that instrument.

Agilent Technologies does not warrant that the operation of the

instrument, or software, or firmware will be uninterrupted or error-free.

LIMITATION OF WARRANTY

The foregoing warranty shall not apply to defects resulting from

improper or inadequate maintenance by Buyer, Buyer-supplied software

or interfacing, unauthorized modification or misuse, operation outside of

the environmental specifications for the product, or improper site

preparation or maintenance.

NO OTHER WARRANTY IS EXPRESSED OR IMPLIED. AGILENT

TECHNOLOGIES SPECIFICALLY DISCLAIMS THE IMPLIED

WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A

PARTICULAR PURPOSE.

EXCLUSIVE REMEDIES

THE REMEDIES PROVIDED HEREIN ARE BUYER’S SOLE AND

EXCLUSIVE REMEDIES. Agilent Technologies SHALL NOT BE

LIABLE FOR ANY DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR

CONSEQUENTIAL DAMAGES, WHETHER BASED ON CONTRACT,

TORT, OR ANY OTHER LEGAL THEORY.

Where to Find the Latest Information

Documentation is updated periodically. For the latest information about

Agilent NFA Noise Figure Analyzers, including firmware upgrades and

application information, please visit the following Internet URL:

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

Manufacturer's Declaration

This statement is provided to comply with the requirements of the

German Sound Emission Directive, from 18 January 1991.

This product has a sound pressure emission (at the operator position)

< 70 dB(A).

• Sound Pressure Lp < 70 dB(A).

• At Operator Position.

•NormalOperation.

• According to ISO 7779:1988/EN 27779:1991 (Type Test).

Herstellerbeschein

igung Diese Information steht im Zusammenhang mit den Anforderungen der

Maschinenlärminformationsverordnung vom 18 Januar 1991.

• Schalldruckpegel Lp < 70 dB(A).

•AmArbeitsplatz.

• Normaler Betrieb.

• Nach ISO 7779:1988/EN 27779:1991 (Typprüfung).

Contents

vii

1. Getting Started

WhatYouwillFindinthisChapter..............................2

OverviewoftheFront-Panel....................................3

OverviewoftheRear-Panel.....................................6

DisplayAnnotation...........................................8

OverviewoftheFrontPanelKeys..............................11

HowtheFrontPanelKeysareOrganized ......................11

NavigatingThroughtheMenuSystem.........................11

PerformingCommonFileOperations............................13

FormattingaDiskette......................................13

SavingaFile..............................................15

LoadingaFile.............................................16

RenamingaFile...........................................16

CopyingaFile.............................................17

DeletingaFile ............................................18

WorkingwithTables.........................................19

2. Making Basic Measurements

WhatYouwillFindinthisChapter.............................22

EnteringENRData..........................................23

Selecting a Common ENR Table . . . . . . . . . .....................23

EnteringENRTableData...................................24

SavinganENRTable.......................................27

EnteringaSpotENRValue..................................28

ChangingtheDefaultTcoldvalue.............................28

SettingtheMeasurementFrequencies ..........................29

SelectingSweepFrequencyMode.............................29

SelectingListFrequencyMode...............................30

viii

Contents

SelectingFixedFrequencyMode.............................32

SettingtheBandwidthandAveraging..........................33

SelectingaBandwidthValue................................33

SettingAveraging.........................................33

CalibratingtheAnalyzer.....................................34

Toperformacalibration....................................34

SelectingtheInputAttenuationRange........................35

DisplayingtheMeasurementResults...........................36

SelectingtheDisplayFormat................................36

SettingwhichResultTypesareDisplayed.....................38

Graphicalfeatures ........................................39

SettingtheScaling........................................41

WorkingwithMarkers.....................................43

IndicatinganInvalidResult..................................50

3. Advanced Features

WhatYouwillFindinthisChapter............................52

SettingupLimitLines.......................................53

CreatingaLimitLine......................................54

SettingLossCompensation...................................55

ConfiguringLossCompensation .............................55

4. Performing System Operations

WhatYouwillFindinthisChapter............................58

SettingtheGPIBAddresses..................................59

ToSettheGPIBAddresses..................................59

ConfiguringtheSerialPort...................................60

ConfiguringtheLOGPIB....................................61

Contents

ConfiguringtheCharacteristicsofanExternalLO ................62

CustomCommandSet......................................62

SettlingTime.............................................64

MinimumandMaximumFrequencies.........................65

ConfiguringtheInternalAlignment.............................66

TurningAlignmentOffandOn...............................66

ChangingAlignmentMode..................................66

DisplayingError,SystemandHardwareInformation..............67

DisplayingtheErrorHistory.................................67

DisplayingSystemInformation...............................67

DisplayingHardwareInformation ............................67

PresettingtheNoiseFigureAnalyzer...........................68

DefiningthePower-On/PresetConditions........................69

SettingthePowerOnConditions .............................69

SettingthePresetConditions................................69

RestoringSystemDefaults....................................70

SettingtheTimeandDate....................................71

Toturnthetimeanddateonandoff...........................71

Tosetthetimeanddate.....................................71

ConfiguringaPrinter ........................................72

ToConfigureaPrinter......................................72

TestingCorrectPrinterOperation ............................72

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