BIRD 4314B Manuale utente

INSTRUCTION BOOK

OPERATING INSTRUCTIONS

RF DIRECTIONAL

THRULINE WATTMETER

MODEL 4314B

Instruction Book Part Number 920-4314B Rev. C

Thruline ® is a Registered Trademark of Bird Electronic Corporation

Electronic Corporation

Cleveland (Solon) Ohio US

Safety Precautions

The following are general safety precautions that are not necessarily related

to any specific part or procedure and do not necessarily appear elsewhere in

this publication.

Keep Away From Live Circuits

Operating personnel must at all times observe normal safety precautions. Do

not replace components inside equipment with the high voltage supply

turned on. To avoid casualties, always remove power.

Do Not Service Or Adjust Alone

Under no circumstances should any person reach into an enclosure for the

purpose of service or adjustment of equipment except in the presence of some-

one who is capable of rendering aid.

Safety Earth Ground

An uninterruptible earth safety ground must be supplied from the main

power source to test instruments. Grounding one conductor of a two conduc-

tor power cable is not sufficient protection. Serious injury or death can occur

if this grounding is not properly supplied.

Shock Hazard

Do not attempt to remove a RF transmission line while power is present. Ra-

diated RF power is a potential health hazard.

Resuscitation

Personnel working with or near high voltages should be familiar with modern

methods of resuscitation.

Safety Symbols

WARNING

Warning notes call attention to a procedure, which if not correctly

performed could result in personal injury.

CAUTION

Caution notes call attention to a procedure, which if not correctly

performed could result in damage to the instrument.

This symbol appears on the equipment indicating there is

important information in the instruction manual regard-

ing that particular area.

+Note: Calls attention to supplemental information.

4314B Warning Statements

The following warnings appear in the text where there is danger to operating

and maintenance personnel, and are repeated here for emphasis.

WARNING

Exposure to RF power radiation and the possibility of RF shock or

burns exists with some operating conditions. Always be sure to turn off

the transmitter when connecting or disconnecting a wattmeter. Be sure

the transmission line is terminated into a load or antenna. When a

Plug-In Element is removed from the RF line socket, the line section

center conductor is exposed. Do not put fingers or other objects into the

Plug-In Element socket while RF power is applied.

WARNING

Always be sure transmitter power is off before disconnecting the unit

from the transmission line.

4314B Caution Statements

The following cautions appear in the text whenever a procedure, if not prop-

erly followed, could put the equipment in danger of damage and are repeated

here for emphasis.

CAUTION

Do not drop the Thruline Wattmeter or its elements or subject them to

hard blows. The microammeter is shock mounted in the wattmeter

housing, but its delicate mechanism may be damaged by severe impact.

CAUTION

Severe damage to the Plug-In Element or wattmeter can result from

exposure to excessive RF power. Make sure the Plug-In Element

installed in the wattmeter has a sufficiently high wattage rating to

handle the line load when it is first applied to the RF line.

CAUTION

Use reasonable care in handling. Do not drop or subject the wattmeter

or elements to hard blows as accuracy may be impaired or other

damage may result.

CAUTION

Do not apply RF power to the wattmeter in excess of the full scale

range of the element.

CAUTION

When making low reflection readings using a more sensitive element,

take care to insert the element so that it senses reflected power only.

Do not rotate the element in the socket so that it is subjected to

forward power. This can result in damage to the Plug-In Element, the

microammeter, or both.

CAUTION

If other than Female N type connectors are used, limit power and

frequency to the capabilities of the RF coaxial cable or connectors used.

Damage to connectors or errors in reading could result.

Model 4314B Safety Statements

USAGE

ANY USE OF THIS INSTRUMENT IN A MANNER NOT

SPECIFIED BY THE MANUFACTURER MAY IMPAIR

THE INSTRUMENT’S SAFETY PROTECTION.

iii

USO

EL USO DE ESTE INSTRUMENTO DE MANERA NO

ESPECIFICADA POR EL FABRICANTE, PUEDE

ANULAR LA PROTECCIÓN DE SEGURIDAD DEL

INSTRUMENTO.

BENUTZUNG

WIRD DAS GERÄT AUF ANDERE WEISE

VERWENDET ALS VOM HERSTELLER

BESCHRIEBEN, KANN DIE GERÄTESICHERHEIT

BEEINTRÄCHTIGT WERDEN.

UTILISATION

TOUTE UTILISATION DE CET INSTRUMENT QUI

N’EST PAS EXPLICITEMENT PRÉVUE PAR LE FABRI-

CANT PEUT ENDOMMAGER LE DISPOSITIF DE PRO-

TECTION DE L’INSTRUMENT.

IMPRIEGO

QUALORA QUESTO STRUMENTO VENISSE

UTILIZZATO IN MODO DIVERSO DA COME

SPECIFICATO DAL PRODUTTORE LA PROZIONE DI

SICUREZZA POTREBBE VENIRNE COMPROMESSA.

SERVICE

SERVICING INSTRUCTIONS ARE FOR USE BY SER-

VICE -TRAINED PERSONNEL ONLY. TO AVOID DAN-

GEROUS ELECTRIC SHOCK, DO NOT PERFORM ANY

SERVICING UNLESS QUALIFIED TO DO SO.

SERVICIO

LAS INSTRUCCIONES DE SERVICIO SON PARA USO

EXCLUSIVO DEL PERSONAL DE SERVICIO

CAPACITADO. PARA EVITAR EL PELIGRO DE

DESCARGAS ELÉCTRICAS, NO REALICE NINGÉN

SERVICIO A MENOS QUE ESTÉ CAPACITADO PARA

HACERIO.

WARTUNG

ANWEISUNGEN FÜR DIE WARTUNG DES GERÄTES

GELTEN NUR FÜR GESCHULTES FACHPERSONAL.

ZUR VERMEIDUNG GEFÄHRLICHE, ELEKTRISCHE

SCHOCKS, SID WARTUNGSARBEITEN

AUSSCHLIEßLICH VON QUALIFIZIERTEM

SERVICEPERSONAL DURCHZUFÜHREN.

ENTRENTIEN

L’EMPLOI DES INSTRUCTIONS D’ENTRETIEN DOIT

ÊTRE RÉSERVÉ AU PERSONNEL FORMÉ AUX

OPÉRATIONS D’ENTRETIEN. POUR PRÉVENIR UN

CHOC ÉLECTRIQUE DANGEREUX, NE PAS

EFFECTUER D’ENTRETIEN SI L’ON N’A PAS ÉTÉ

QUALIFIÉ POUR CE FAIRE.

ASSISTENZA TECNICA

LE ISTRUZIONI RELATIVE ALL’ASSISTENZA SONO

PREVISTE ESCLUSIVAMENTE PER IL PERSONALE

OPPORTUNAMENTE ADDESTRATO. PER EVITARE

PERICOLOSE SCOSSE ELETTRICHE NON

EFFETTUARRE ALCUNA RIPARAZIONE A MENO CHE

QUALIFICATI A FARLA.

RF VOLTAGE MAY BE PRESENT IN RF ELEMENT

SOCKET - KEEP ELEMENT IN SOCKET DURING OP-

ERATION.

DE LA TENSION H.F. PEAT ÊTRE PRÉSENTE DANS

LA PRISE DE L’ÉLÉMENT H.F. -CONSERVER

L’ÉLÉMENT DANS LA PRISE LORS DE L’EMPLOI.

HF-SPANNUNG KANN IN DER

HF-ELEMENT-BUCHSE ANSTEHEN -ELEMENT

WÄHREND DES BETRIEBS EINGESTÖPSELT

LASSEN.

PUEDE HABER VOLTAJE RF EN EL ENCHUFE DEL

ELEMENTO RF -MANTENGA EL ELEMENTO EN EL

ENCHUFE DURANTE LA OPERACION.

IL PORTAELEMENTO RF PUÒ PRESENTARE

VOLTAGGIO RF - TENERE L’ELEMENTO NELLA

PRESA DURANTE IL FUNZIONAMENTO.

About This Manual

This instruction book guides the user through the operation and maintenance

of the Bird Model 4314B RF Directional Thruline Wattmeter.

This instruction book is arranged so that the essential information about

safety is in the front of the book. Reading the Safety Precautions section be-

fore operating the equipment is strongly advised.

The remainder of this manual is divided into chapters and sections. At the

beginning of each chapter, a general overview describes the contents of that

chapter.

Operation

First time users should read Chapter 1 - Introduction, Chapter 2 -

Installation, and Chapter 3 - Theory of Operation, to get an overview of

equipment capabilities. An experienced operator can refer to Chapter 4 - Op-

erating Instructions. All instructions necessary to operate the equipment are

in this chapter.

Maintenance

All personnel should be familiar with preventive maintenance found in Chap-

ter 5 - Maintenance. If a failure should occur, the troubleshooting section will

aid in isolating and repairing the failure.

Parts

For the location of major assemblies or parts, refer to the parts list in Chap-

ter 5 - Maintenance.

Changes To This Manual

We have made every effort to ensure this manual is accurate. If you should

discover any errors, or if you have suggestions for improving this manual,

please send your comments to our factory. This manual may be periodically

updated. When inquiring about updates to this manual refer to the part num-

ber and revision level on the title page.

vii

Table of Contents

Safety Precautions ......................i

Warning Statements ....................ii

Caution Statements ....................iii

About This Manual .....................vi

Introduction .........................1

Purpose and Function ...................1

Description ........................1

Performance Characteristics and Capabilities .........1

Power Requirements ....................2

Additional Equipment ...................2

Standard Plug-In Elements .................2

Specifications .......................3

Installation .........................5

Portability ........................5

Connections........................5

Theory of Operation .....................9

Traveling Wave Viewpoint .................9

Coupling Circuit......................9

Peak Power Operation...................10

Component Description ..................14

Operating Instructions ...................17

Zero Adjust Meter ....................17

Plug-In Element Selection and Insertion ...........17

CW Power Measurements .................18

Peak Power Measurements.................18

Load power .......................18

Determining VSWR ....................19

Making Low Reflection Readings ..............22

Testing Lines, Connectors, Filters and Related Components. . . 22

Attenuation By Open Or Short Circuit............23

Measuring Percentage Of Positive Modulation ........23

Performance Notes ....................25

Shutdown ........................26

Maintenance ........................29

Cleaning ........................29

Preventative Maintenance .................29

Line Section Care ....................29

Inspection ........................30

viii

Bird Model 4314B RF Directional Thruline Wattmeter

Trouble Shooting .....................30

Troubleshooting Guide...................31

Battery Test .......................33

Battery Replacement ...................33

Meter Replacement ....................34

Instrumentation Module Replacement............36

RF Connector Replacement.................38

Calibration .......................38

Customer Service .....................40

Replacement Parts ....................41

Available QC Type Connectors ...............41

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