Bird Technologies 4421 User Manual

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INSTRUCTION BOOK

THRULINE® RF POWER METER MODEL 4421

AND

THRULINE

DIRECTIONAL

RF POWER SENSORS

4020 SERIES, 4027A SERIES,

4027F SERIES, AND 4028 SERIES

Bird® Electronic Corporation 30303 Aurora Road Cleveland (Solon), Ohio 44139

Sales & Technical Support: 440-248-1200

Sales email: sales@bird-technologies.com

Technical Support email: techsupport@bird-technologies.com

Instruction Book Part Number 920-4421 Rev U

866-695-4569 toll free

Thruline

is a Registered Trademark

of Bird Electronic Corporation

This page intentionally left blank

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. These precautions must be thoroughly understood and apply to all phases of operation and maintenance.

WARNING

Keep Away From Live Circuits

Operating Personnel must at all times observe general safety precautions.

Do not replace components or make adjustments to the inside of the test

equipment with the high voltage supply turned on. To avoid casualties,

always remove power.

WARNING

Shock Hazard

Do not attempt to remove the RF transmission line while RF power is present.

WARNING

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

someone who is capable of rendering aid.

WARNING

Safety Earth Ground

An uniterruptible earth safety ground must be supplied from the main

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

conductor power cable is not sufficient protection. Serious injury or death

can occur if this grounding is not properly supplied.

Safety Symbols

WARNING

Chemical Hazard

Dry cleaning solvents for cleaning parts may be potentially dangerous. Avoid

inhalation of fumes or prolonged contact with skin.

WARNING

Resuscitation

Personnel working with or near high voltages should be familiar with

modern methods of resuscitation.

WARNING

Remove Power

Observe general safety precautions. Do not open the instrument with the power on.

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.

The caution symbol appears on the equipment indicating there is important information in the instruction manual regarding that particular area.

 Note: Calls attention to supplemental information.

iii

Warning Statements

The following safety warnings appear in the text where there is danger to operating and maintenance personnel and are repeated here for emphasis.

WARNING Never attempt to connect or disconnect RF equipment from the transmission line while RF power is being applied. Leaking RF energy is a potential health hazard.

Refer to page 5, 35, and 41.

WARNING

To avoid personal injury, disconnect the power cord from the AC line before

performing any maintenance, including fuse replacement or changing the

line voltage setting.

Refer to page 35, 38, 39, and 41.

WARNING

Use only Nickel Metal Hydride (NiMH) batteries that have a minimum

capacity of 4500 milliamper hours (mAh). Do not install batteries that are not Nickel Metal Hydride. Do not install NiMH batteries that have less than 4500 mAh capacity. Failure to comply may result in damage to the batteries,

damage to the instrument, and injury to personnel from battery chemicals.

Refer to page 40.

WARNING

Heavy load. Do not attempt to lift unaided.

Caution Statements

Refer to page 41.

The following equipment cautions appear in the text whenever the equipment is in danger of damage and are repeated here for emphasis.

CAUTION

Changing the sensor’s connectors will invalidate calibration data, and may

reduce the maximum power rating of the unit.

Refer to page 2, 41, 43, 45, and 49.

CAUTION

The Bird 4421 must be powered off when connecting or disconnecting the

power sensor from the power meter.

Refer to page 5 and 41.

CAUTION

Do not use the power sensor with a load VSWR greater then 2:1. Damage to

the power meter, power sensor, or the RF power source could occur.

Refer to page 5.

CAUTION

Long-term storage of this instrument can affect battery performance and

reduce battery life. Do not store the instrument for long periods of time

without recharging the batteries (refer to page 40). Failure to comply may

result in reduced battery charge and shortened battery life.

Refer to page 7

CAUTION

During remote operation, periodically monitor the bus service request line.

Failure to detect a service request could result in equipment damage.

Refer to page 11 and 16.

CAUTION

Due to the complexity of the Bird Power Sensor, field repairs beyond general

maintenance should not be attempted. Removal or disturbance of the power

sensor cover can result in cancellation of lifetime warranty.

Refer to page 35 and 41.

CAUTION

Failure to install the properly rated fuse may result in equipment damage or

nuisance failures.

Refer to page 39.

Safety Statements

USAGE

ANY USE OF THIS INSTRUMENT IN A MANNER NOT SPECIFIED BY THE MANUFACTURER MAY IMPAIR THE INSTRUMENT’S SAFETY PROTECTION.

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 FABRICANT PEUT ENDOMMAGER LE DISPOSITIF DE PROTECTION 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 SERVICETRAINED PERSONNEL ONLY. TO AVOID DANGEROUS 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 NINGÚN 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.

vii

UNITS ARE EQUIPPED WITH RECHAREABLE BATTERIES. THESE ARE TO BE REPLACED BY AUTHORIZED SERVICE PERSONNEL ONLY!!!

LAS UNIDADES VIENEN EQUIPADAS CON BATERIAS RECARGABLES. ¡¡¡Y SOLAMENTE EL PERSONAL DE SERVICIO AUTORIZADO PUEDE REEMPLAZARLAS!!!

GERÄTE SIND MIT WIEDER AUFLADBAREN BATTERIEN BESTÜCKT. BATTERIEN SIND NUR VON QUALIFIZIERTEM SERICE PERSONAL AUSZUWECHSELN!!!

CES DISPOSITIFS SONT ÉQUIPÉS DE BATTERIES RECHARGEABLES. SEUL LE PERSONNEL D’ENTRETIEN AUTORISÉ EST HABILITÉ À LES REMPLACER !

LE UNITÀ SONO DOTATE DI BATTERIE RICARICABILI, CHE DEVONO DA COME SPECIFICATO DAL PRODUTTORE LA PROTEZIONE DI SICUREZZA POTREBBE VENIRNE COMPROMESSA.

viii

BE SURE THE 115/230V AC VOLTAGE SELECTOR IS SET TO THE PROPER LINE VOLTAGE, AND THE CORRECT AC LINE FUSE IS INSTALLED BEFORE AC POWER IS APPLIED.

S’ASSURER QUE LE SÉLECTEUR DE TENSION 115/230V C.A. EST BIEN RÉGLÉ POUR LA TENSION DU RÉSEAU ET QUE LE FUSIBLE DE LIGNE C.A. CORRECT EST EN PLACE AVANT DE METTRE SOUS TENSION C.A.

CERCIORESE QUE EL SELECTOR DE VOLTAJE DE 115/230V CA ESTE COLOCADO A LA LINEA DE VOLTAJE APROPIADA Y QUE EL FUSIBLE ESTE INSTALADO A LA LINEA CA ANTES DE APLICAR LA CORRIENTE ALTERNA.

VOR EINSCHALTEN DER WECHSELSTROMZUFUHR SICHERSTELLEN, DASS DER 115/230V WECHSELSPANNUNGS-SELEKTOR AUF DIE VORSCHRIFTSMÄSSIGE LEITUNGSSPANNUNG EINGESTELLT UND DIE RICHTIGE WECHSELSTROM-HAUPTSICHERUNG EINGESETZT IST.

PRIMA DI EROGARE CORRENTE, ASSICURARSI CHE IL SELETTORE DI VOLTAGGIO 115/230 V.C.A. SIA REGOLATO CORRETTAMENTE E CHE IL FUSIBLE ADATTO ALLA LINEA DI ALIMENTAZIONE C.A. SIA INSTALLATO.

About This Manual

This manual covers the Bird 4421 RF Power Meter and the its sensors. This manual covers the operating and maintenance instructions for the following models:

Power Meter 4421

4020 Series

Sensors

4027A Series

Sensors

4027F Series

Sensors

4028A Series

Sensors

4028B Series

Sensors

4028C Series

Sensors

4021402240244025

4027A250K 4027A400K 4027A800K 4027A2M 4027A4M 4027A10M 4027A12M 4027A25M 4027A35M 4027A60M 4027A100M 4027A150M 4027F2M 4027F10M 4027F60M

4028A250K 4028A400K 4028A2M 4028A3M 4028A4M 4028A10M 4028A25M

4028B10M 4028B3M

4028C10M

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 number and revision level on the title page.

Chapter Layout

Introduction - Describes the purpose and function of the Power Meter as well

as a general overview of the product. Installation - Describes the installation instructions for the power meter models

covered in this manual. Operating Instructions - Describes the features of the power meters and pro-

vides power-up instructions. IEEE-488 GPIB Interface - Describes the features of the IEEE-488 GPIB Inter-

face.

RS-232 Interface - Describes the features of the RS-232 Interface. Maintenance - Contains preventative maintenance information, troubleshoot-

ing section, and a list of replacement parts with part numbers.

Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii

Safety Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii

Warning Statements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iv

Caution Statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iv

Safety Statements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vi

About This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .x

Changes to this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . x

Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . x

Chapter Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . x

Chapter 1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

Power Meter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Items Supplied . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Optional Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Power Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

4020 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

4027A Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

4027F Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

4028 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Frequency and Power Ranges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

4020 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

4027A Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

4027F Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

4028 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Chapter 2 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Sensor Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

RF Line Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Panel Mounting the 4421 Power Meter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Handle Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

115/230V AC Input Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

AC Line Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Chapter 3 Operating Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Push Button Functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Error Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Audible Warning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Chapter 4 IEEE-488 GPIB Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Cable Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Interface Capabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Dip Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Talker-Only Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Command Syntax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

General Bus Commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Device Dependent Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Chapter 5 RS-232 Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Cable Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

DIP Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Auto Baud . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Talker-Only Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Command Syntax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

General Bus Commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Device Dependent Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Chapter 6 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Functional Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Push Button Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Front Panel (Cal Cart only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Cord Reel (Cal Cart only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Replacing Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Replacing Batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Long Term Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Power Sensor (Cal Cart only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Casters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Handle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Storage and Shipment (Cal Cart only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Specifications, Cal Cart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Max. Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Specifications, 4421 Power Meter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Specifications, Power Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Specifications, RS-232 Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Specifications, IEEE-488 GPIB Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Customer Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Limited Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51

xii

Chapter 1 Introduction

REMOVE AC POWER BEFORE ATTEMPTING TO SERVICE THIS

INSTRUMENT

VOLTAGE 115/230 V FUSE RATING T630mA/T315mA FREQUENCY 50/60 Hz MAXIMUM POWER 60W

AC SUPPLY

O OFF

POWER SENSOR

REAR

101312

12-1/4” (312 mm)

SIDE

10-1/8” (257 mm)

4-1/4”

(108 mm)

FRONT

MODEL 4421 RF POWER METER

AUTO

RANGE

DOWN

SWRRFLFWD MIN MAX dBm LIGHT ON / OFF

1. Operating Push Buttons

2. LCD

3. ON/OFF Push Button

4. Handle

5. Central Button

6. Fuse Access Door

7. AC Line Module

8. Master ON/OFF Switch

9. GPIB connector

10. GPIB DIP switches

11. RS-232 connector

12. RS-232 DIP switches

13. Power Sensor Socket

Power Meter

The Bird 4421 RF Power Meter is one component of a complete RF power measurement system. An RF power sensor such as a Bird 4021 is also required. The system can be controlled with the front panel buttons, or remotely through an RS-232 connection or a GPIB-488 connection.

Items Supplied

z Bird 4421 RF Power Meter z AC Power Cord z Sensor Cable z Instruction Manual

Optional Accessories

Panel Mount Kit (P/N 4421-250) - Allows the Bird 4421 to be installed in a

standard 19" panel for rack mount applications. Null Modem Kit (P/N 4380-250) - Contains the hardware necessary to allow

the 4421 to be remotely controlled by controllers with different wiring arrangements. Requires an RS-232 interface module.

Figure 1 Bird 4421 Meter Outline Drawing

Bird 4421 RF Power Meter

DIRECTIONAL POWER SENSOR MODEL 4022

0.3 - 1000 WATTS 25 - 1000 MHz

3-3/4”

(95 mm)

3/4”

(19 mm)

1-3/8”

(35 mm)

2-1/2”

(64 mm)

3-1/4”

(83 mm)

-CAUTION-

SOURCE LOAD

SENSOR PLUG

SOCKET

Power Sensors

4020 Series

4027A Series

Power sensors are available with a variety of connectors; see "Available Connectors" on page 49 for a complete list. Since the accuracy is critically dependent on the connectors used at calibration, do not remove or change the connectors.

CAUTION

Changing the sensor’s connectors will invalidate calibration data, and may

reduce the maximum power rating of the unit.

Bird 4020 Series Power Sensors are designed for lab or field use and are accurate to within ±3%(1σ) of reading.

Bird 4027A Series Power Sensors are designed for use in semiconductor processing and calibration applications. Stringent calibration provides long-term unit-to-unit repeatability, allowing consistent amounts of RF energy to be applied to the etch process over many etch cycles. 4027A Sensors are accurate to ±1%(1σ) at specified calibration frequencies and power levels.

4027F Series

4028 Series

Bird 4027F Series Power Sensors are similar to the 4027A series. However, additional filtering allows the 4027F to ignore harmonics of the signal being measured. The 4027F is also less sensitive to AM components of the signal. 4027F Sensors are accurate to ±1%(2σ) at specified calibration frequencies and power levels.

Figure 2 Power Sensor Outline Drawing, 4020, 4027A, 4027F, & 4028A Series

Bird 4028 Series Power Sensors are high power sensors otherwise similar to the 4027A series. 4028A sensors are based on a 7/8” line, 4028B sensors use a 1-5/8” line, and 4028C sensors use a 3-1/8” line. 4028 Sensors are accurate to ±2% at specified calibration frequencies and power levels.

Introduction

SENSOR PLUG

SOCKET

3.75"

(96 mm)

4.75"

(121 mm)

3.5"

(89 mm)

6.75"

(172 mm)

SOURCE LOAD

Figure 3 Power Sensor Outline Drawing 4028B Series only

Figure 4 Power Sensor Outline Drawing 4028C Series only

Bird 4421 RF Power Meter

Frequency and Power Ranges

4020 Series

Model Frequency Range RF Power Range

4021 1.8 – 32 MHz 300 mW – 1 kW 4022 25 – 1000 MHz 300 mW – 1 kW 4024 1.5 – 32 MHz 3 W – 10 kW 4025 100 kHz – 2.5 MHz 3 W – 10 kW

4027A Series

Model Frequency Range RF Power Range

4027A250K 250 – 400 kHz 3 W – 10 kW 4027A400K 400 – 550 kHz 3 W – 10 kW 4027A800K 800 – 950 kHz 3 W – 10 kW

4027A2M 1.5 – 2.5 MHz 3 W – 10 kW

4027A4M 3 – 5 MHz 3 W – 10 kW 4027A10M 10 – 15 MHz 3 W – 10 kW 4027A12M 10 – 15 MHz 300 mW – 1 kW 4027A25M 25 – 30 MHz 3 W – 9 kW 4027A35M 35 – 45 MHz 3 W – 7.5 kW 4027A60M 45 – 65 MHz 3 W – 6 kW

4027A100M 95 – 105 MHz 3 W – 4 kW 4027A150M 150 – 170 MHz 3.75 W – 3.75kW

4027F Series

4028 Series

Model Frequency Range RF Power Range

4027F2M 1.8 – 2.2 MHz 100 W – 10 kW

4027F10M 12 – 15 MHz 3 W – 4 kW 4027F60M 57 – 63 MHz 3.75 W – 3.75 kW

Model Frequency Range RF Power Range

4028A250K 250 – 400 kHz 1 kW – 20 kW 4028A400K 400 – 550 kHz 1 kW – 20 kW

4028A2M 1.5 – 2.5 MHz 1 kW – 25 kW

4028A3M 2.5 – 3.5 MHz 1 kW – 25 kW

4028A4M 3.5 – 4.5 MHz 1 kW – 25 kW 4028A10M 10 – 15 MHz 1 kW – 25 kW 4028A25M 25 – 30 MHz 1 kW – 25 kW

4028B3M 2.5 – 4 MHz 1 kW – 25 kW 4028B10M 10 – 15 MHz 1 kW – 25 kW 4028C10M 10 – 15 MHz 500W – 50 kW

Chapter 2 Installation

This chapter provides information about preparing the Bird 4421 for use.

Sensor Connection

CAUTION

Changing the sensor’s connectors will invalidate calibration data, and may

reduce the maximum power rating of the unit.

CAUTION

The Bird 4421 must be powered off when connecting or disconnecting the

power sensor from the power meter.

1. Turn OFF the ON/OFF rocker switch on the meter’s rear panel.

2. Align the latch on the cable with the notch of the “Power Sensor” socket on the power meters rear panel.

3. Insert the cable until it clicks into place.

4. Connect the other end of the sensor cable to the sensor.

RF Line Connection

Never attempt to connect or disconnect RF equipment from the transmission

line while RF power is being applied.

Leaking RF energy is a potential health hazard.

Do not use the power sensor with a load VSWR greater then 2:1. Damage to

the power meter, power sensor, or the RF power source could occur.

Connect the end of the power sensor labeled “SOURCE” to the RF source. Connect the end labeled “LOAD” to the load or antenna. Reversing these connections will cause measurement errors.

Panel Mounting the 4421 Power Meter

You can install the 4421 Power Meter in an equipment rack if you have the optional panel mount kit (refer to Optional Accessories, page 1). The panel mount kit includes complete installation instructions. Figure shows the overall dimensions and mounting points for a 4421 Power Meter installed in a panel mount kit.

 Note: The power supply interrupt switch for the 4421 Power Meter

is located on the rear panel. When you install a unit in a panel mount kit, you need to provide a means to interrupt the power supply that is easily accessible to the user (such as a switch mounted in the panel).

WARNING

CAUTION

Bird 4421 RF Power Meter

RF POWER METER

dBmMAX LIGHTSWRMINRFL

4421

FWD

SENSOR

POWER

178 - 264 VAC

VOLTAGE

100 - 132 VAC

AT 47.5 - 66 Hz

MAXIMUM POWER 15W

REMOVE AC POWER BEFORE ATTEMPTING

TO SERVICE THIS INSTRUMENT.

W A R N I N G

T .125A, 250V

T .250A, 250V

FUSE

AC SUPPLY

O OFF

FUSE

I ON

POWER SENSOR

Figure 5 Panel Mounting Dimensions

Handle Operation

The handle on the Bird 4421 can be set to four different positions (see Figure 6). To adjust the handle, press the center buttons on both sides. Releasing the buttons will lock the handle into position.

Figure 6 Handle Positions

115/230V AC Input Power

The internal power supply can operate at 115 VAC or 230 VAC. There is no user setting to select the input voltage because the power supply automatically senses the input voltage. However, you must make sure that you have the correct power cord plug and fuses installed for the line voltage you are using (refer to Replacing Fuses, page 39).

AC Line Connectors

To make the AC line cord compatible with non-U.S. voltages, users must install the appropriate connector on the power cord.

Installation

Batteries

The Bird 4421 RF Power Meter is completely portable and is powered from internal rechargable nickel metal hydride batteries.

The batteries are shipped in a low charge state. It is, therefore, recommended that you chrage the instrument for approximately 28 hours before using it for continous operation.

 Note: Battery charging at temperatures greater than 45° C (113°

F) can result in reduced operational time.

CAUTION

Long-term storage of this instrument can affect battery performance and

reduce battery life. Do not store the instrument for long periods of time

without recharging the batteries (refer to page 40). Failure to comply may

result in reduced battery charge and shortened battery life.

Bird 4421 RF Power Meter

Chapter 3 Operating Instructions

LIST EN TALK L OCAL LO CKOUT

FWD

AUTO

LO BAT REMOTE

MODEL 4421 RF POWER METER

AUTO

RANGE

DOWN

SWRRFLFWD MIN MAX dBm LIGHT ON / OFF

MW nW KW µW W mW dBm

FWD RFL SWR

This chapter describes operator controls and indicators on the Bird 4421 RF Power Meter. For remote operation using a GPIB or RS-232 controller, refer to the instructions in Chapter 4 or Chapter 5 respectively.

Push Button Functions

Figure 7 Push Buttons

Push Button Description

FWD, RFL Press to measure forward or reflected RF power. FWD or RFL

indicator and current unit of measure turn on.

SWR Press to measure standing wave ratio. SWR indicator turns on. Value

displayed will be between 1.0 and 199.9

MIN, MAX Used after pressing FWD, RFL, SWR, or dBm. Displays the minimum

(maximum) measured value of the previous function as long as MIN (MAX) is held down.

dBm Used after pressing FWD or RFL. dBm indicator turns on. Power is

displayed in dBm units.

 Note: Used after pressing SWR. Return loss is displayed.

LIGHT Press to turn on or turn off the display’s backlight. If left on, the light

automatically shuts off after 30 minutes.

AUTO Press to automatically set the scale. AUTO turns on.

UP, DOWN Press to select the next higher (lower) scale. If the scale is too high for

the power sensor, an error will be displayed.

 Note: Used while AUTO indicator is on. Stops automatic

scaling. AUTO indicator turns off.

ON/OFF Press to turn the power meter on or off. This switch will not work if the

master power switch on the rear panel is OFF.

 Note: The display flashes for about 30 seconds when the

unit is first turned on.

Bird 4421 RF Power Meter

Error Codes

The Bird 4421 displays error codes when the RF power is either below the selected range (underrange) or above the selected range (overrange). Table 4-1 displays the error codes and Table 4-2 lists the function limits.

Table 4-1 Error Codes

Symbol Explanation

Value greater than overrange limit of function

Value less than underrange limit of function

Table 4-2 Function Limits

Function Limit Error

Audible Warning

FWD, RFL Power > 199.9 % of full scale or 120 % of

top range

FWD dBm, RFL dBm Power > 120 % of full scale Overrange

Power < 3% of low range Underrange

SWR FWD < 20% of low range Underrange

FWD – RFL = 0 Overrange

Return Loss FWD < 20% of low range Underrange

RFL < 20% of low range Underrange

Return Loss > 40 dB Underrange

Overrange

If the RF power level exceeds 120% of the power sensor’s maximum power capability, the power meter will sound a warning buzzer.

Chapter 4 IEEE-488 GPIB Interface

This chapter discusses setup of the IEEE-488 interface feature and describes the IEEE commands that apply to the Bird 4421. Operators should understand IEEE standard 488-1978 and have basic computer programming skills before attempting to write any programs.

CAUTION

During remote operation, periodically monitor the bus

service request line. Failure to detect a service request

could result in equipment damage.

Description

The Bird 4421 IEEE-488 (GPIB) interface has an eight-position DIP switch that sets operational conditions and interface addresses. The bottom line of the display indicates the current bus status.

Cable Connector

The interface uses a standard IEEE-488 cable connector. Pin assignments are listed in Table 5-3.

Table 5-3 IEEE-488 Pin Assignments

Pin Designation Type

1 D101 Data 2 D102 Data 3 D103 Data 4 D104 Data 5 EOI Management 6 DAV Handshake 7 NRFD Handshake 8 NDAC Handshake

9 IFC Management 10 SRQ Management 11 ATN Management 12 SHIELD Ground 13 D105 Data 14 D106 Data 15 D107 Data 16 D108 Data 17 REN Management 18 GROUND Ground 19 GROUND Ground 20 GROUND Ground 21 GROUND Ground 22 GROUND Ground 23 GROUND Ground 24 GROUND, LOGIC Ground

Bird 4421 RF Power Meter

 Note: The primary address is used by the

controller to refer to specific devices on the bus. When programming the controller, the address in the program must be the same as the address set on the interface module. Each device on the bus must have a different primary address.

Interface Capabilities

Indicators

Setup

Table 5-4 IEEE-488 Interface Module Capabilities

Code Name Description

SH1 Source Handshake Can handshake data or command bytes when the unit is

acting as a source.

AH1 Acceptor Can handshake the bus when it is acting as the acceptor of

data or commands.

T5 Talker Can send data over the bus to other devices. This capability

exists only after the instrument has been addressed to talk, or after a reading in talk-only mode.

L4 Listener Can receive device-dependent data over the bus. This capability

exists only after the unit has been addressed to listen. SR1 Service Request Can request service from the controller. RL1 Remote-Local Can be placed in remote or local mode. PP0 Parallel Poll Does not have parallel polling capability. DC1 Device Clear Can be reset to factory settings. DT1 Device Trigger Can have its readings triggered.

C0 Controller Does not have controller capability. E1 Bus Driver Type Has open-collector bus drivers.

TE0 Extended Talker Does not have extended talker capability.

LE0 Extended Listener Does not have extended listener capability.

The bottom line of the power meter’s display shows indicators describing the status of the Bird 4421 when used with the IEEE interface. These are:

REMOTE - When REMOTE is displayed, the power meter is being controlled through the interface. Measurements, units of measure, and certain other parameters may be changed from a remote location.

LISTEN - When LISTEN is displayed, the power meter is receiving data. TALK - When TALK is displayed, the power meter is transmitting data. This

is always shown when the unit is in “talker-only” mode. LOCAL LOCKOUT - When LOCAL LOCKOUT is displayed, the push buttons

are disabled and the power meter’s functions are being remotely controlled.

Dip Switch

Set the interface to ADDR (Addressable) by positioning DIP switch 1 to ON. This makes the 4421 respond to controller commands.

 Note: There are several button styles on DIP switches (slide, rocker,

lever). Examine the DIP switch to determine the ON and OFF positions.

Set the primary address using the DIP switches. The primary address is factory set to 6, but can be set to any value between 1 and 31 (0 is reserved for the controller) To set the primary address, turn OFF switches 4 – 8 so that the sum of the bits turned off equals the desired primary address. In Figure 8 below, the address is set to 6 (the off switches have values of 4 and 2).

Figure 8 IEEE Interface Default DIP Switch Settings

IEEE-488 GPIB Interface

Talker-Only Mode

Command Syntax

The Bird 4421 can be set up for manual operation while automatically sending data to an output device (Talker-Only Mode). To do so, turn DIP switch 1 OFF and cycle the power. TALK will be displayed.

In Talker-Only mode, pressing a button on the meter triggers a measurement. When the measurement is complete, the information is sent to the bus and LISTEN turns on momentarily. A listen-only device on the bus, such as a printer, can read the value. The power meter is then ready to accept another button press.

The Bird 4421 accepts two types of commands. General bus commands are commands, such as Device Clear (DCL), that apply to any IEEE interfaced device. Device-dependent commands are specific to the 4421.

If an invalid command is sent to the unit, an error condition is placed in the serial poll byte and the offending command is not executed.

A group of device-dependent commands can be sent as a single string as long as like command categories are not repeated, for example: “PNFCFDT3TRG”. This string sets up the 4421 to send no prefixes, read forward dBm, make one reading on “TRG”, and triggers a measurement.

 Note: Commands can be entered in either upper or lower case.  Note: Only the last command entered of each category will be exe-

cuted. As a command string is processed by the 4421, each category of command is stored in a separate location. Two commands of the same category will be stored in the same location, so that the second will overwrite and erase the first one.

General Bus Commands

The general bus commands supported by the IEEE-488 interface feature are listed in Figure 5-5. The syntax for executing general commands varies among controllers; check the documentation supplied with your controller for the proper command structure.

Table 5-5 IEEE-488 General Bus Commands

Command Effect on Bird 4421

IDN? Gives product identification

REN Goes into remote mode when next addressed

GTL Cancels remote mode, restores local operation

LLO Locks out local operation

IFC Goes into talker and listener-idle status

DCL Returns to default conditions

SDC Returns to default conditions

GET Triggers reading in T2 and T3 modes

SPE, SPD Puts the status byte on the bus

Bird 4421 RF Power Meter

IDentificatioN (IDN?)

Function Product identifies itself

Remarks Replies command same as U2

Remote ENable (REN)

Function Enables remote operation.

Remarks The unit must be addressed to listen after setting REN true.

The REMOTE indicator turns on when this command is received.

Go To Local (GTL)

Function Returns device to local operation.

Remarks Issuing a GTL command while the device is in Local Lockout mode does not

clear the lockout condition.

The REMOTE indicator turns off.

The LISTEN indicator remains on.

Local LOckout (LLO)

Function Disables local operation of all devices on the bus.

Remarks REN must be true to use LLO.

LLO is cleared by setting REN false.

InterFace Clear (IFC)

Function Terminates all bus activity and passes control to the system controller.

Remarks All devices are set to talker and listener idle states.

LISTEN mode is cancelled, and its indicator is turned off.

IEEE-488 GPIB Interface

Device CLear (DCL)

Function Resets the status of all devices to an initialized state.

Remarks Does not change the current interface mode.

The 4421 returns to the factory default condition listed in Figure 5-6.

Table 5-6 IEEE-488 Default Conditions

Forward Carrier Wave FC

Auto Range ON RYY

Two Terminators (CR LF) YT

Prefixes YES PY

Trigger One Shot on Talk Address T1

All SRQ’s OFF M00

Send EOI with last byte of message KY

Default Condition Related Command

Selective Device Clear (SDC)

Function Resets the status of a selected device to an initialized state.

Remarks Only the device addressed will be cleared.

The 4421 returns to the factory default condition.

Group Execute Trigger (GET)

Function Initiates a measurement for all devices set to trigger on GET.

Remarks The 4421 must be already set to trigger on GET.

Used to synchronize measurements of multiple instruments.

Bird 4421 RF Power Meter

Serial Polling Enable/Disable (SPE/SPD)

Function Enables or disables the serial polling sequence.

During remote operation, periodically monitor the bus service request line.

Failure to detect a service request could result in equipment damage.

Remarks The SPE command puts all devices in serial poll mode waiting to be addressed.

The SPD command clears the SRQ bit (bit 6) and ends the polling sequence.

When addressed a device sends its status byte to the controller. A value of 1 for a bit means that the device condition that bit refers to is true. A value of 0 means that the condition is false.

The 4421 does not use all bits of the status byte. Table 5-7 lists the bits used, along with a description and how to reset them.

Table 5-7 IEEE Status Byte Description

CAUTION

Bit Name Condition

6 SRQ Set if a service request is generated by the 4421. If an SRQ

has been received by the controller and this bit is cleared, other instruments on the bus should be checked to determine where the SRQ occurred.

Cleared by a serial poll of the 4421.

3 Measurement

Complete

2 Reading

Underflow

1 Reading Overflow Set when the RF power is overrange and a reading has

0 Error Set if an illegal device-dependent command (IDDC) or

Set when the power meter has completed a reading. Cleared by requesting a reading over the bus. Set when the RF power is underrange and a reading has

been completed. Cleared by requesting a reading over the bus.

illegal device-dependent command option (IDDCO) was received, or if the power meter fails the self test.

Cleared by reading the U1 status word. The U1 word contains details on the error, see “Status” on page 21.

IEEE-488 GPIB Interface

Device Dependent Commands

The device-dependent commands used by the 4421 Power Meter are listed in Table 5-8, organized by category.

 Note: The programming card also has a complete command list.

Table 5-8 IEEE-488 Device Dependent Command Summary

Category Command Description

Measurement FC Forward carrier wave

Range RYY Auto range on

Terminators YT Two terminators: CR, LF

Prefixes PY Prefix YES

Triggers T0 Continuous on TALK

Serial Polling M00 Do not generate SRQ

Status U0 Send back current machine state

Self-Test J0 Run self-test

EOI Response KY Send EOI on last byte

Writable Store WXXXXXX Place XXXXXX in RAM

FD Forward dBm

RC Reflected carrier wave

RD Reflected dBm

SW Standing wave ratio

RL Return loss

MN Minimum value

MX Maximum value

R00 to R17 Manual ranges

RNN Auto range off, stay at present range

YO One terminator: CR

YN No terminator

PN Prefix NO

T1 One shot on TALK

T2 Continuous on GET

T3 One shot on GET

T4 Continuous on measurement command

T5 One shot on measurement command

M01 Generate SRQ on error

M02 Generate SRQ on measurement overrange

M04 Generate SRQ on measurement underrange

M08 Generate SRQ on operation complete

U1 Send back error conditions

U2 Send back revision levels

KN Do not send EOI on last byte

Bird 4421 RF Power Meter

Forward Carrier Wave (FC) Forward dBm (FD) Reflected Carrier Wave (RC) Reflected dBm (RD)

Function Selects forward or reflected RF power measurement mode.

Remarks Measurement results are returned in Watts or dBm.

Standing Wave Ratio (SW) Return Loss (RL)

Function Selects SWR or return loss match measurement mode.

Remarks Measurement results are returned in VSWR or dB.

MiNimum Value (MN) MaXimum Value (MX)

Function Selects minimum or maximum measurement mode.

Remarks Another measurement must be selected before selecting min or max.

Returns the minimum (or maximum) value of the previous measurement type.

IEEE-488 GPIB Interface

Range (Rxx)

Function Selects a measurement range listed in Table 5-9.

Remarks If the selected range is outside the range of the connected power sensor, the

command is ignored.

Table 5-9 Measurement Ranges

Command Power Range

RYY Turn auto range on RNN Turn auto range off. Keep present range

R17 18.0 – 199.9 MW R16 1.80 – 19.99 MW R15 0.180 – 1.999 MW R14 18.0 – 199.9 kW R13 1.80 – 19.99 kW R12 0.180 – 1.999 kW R11 18.0 – 199.9 W R10 1.80 – 19.99 W R09 0.180 – 1.999 W R08 18.0 – 199.9 mW R07 1.80 – 19.99 mW R06 0.180 – 1.999 mW R05 18.0 – 199.9 µW R04 1.80 – 19.99 µW R03 0.180 – 1.999 µW R02 18.0 – 199.9 nW R01 1.80 – 19.99 nW R00 0.180 – 1.999 nW

Ter mi na to rs (Y x)

Function Selects the characters that follow the end of a data string. Set x to:

Remarks Many controllers use the terminator sequence to recognize the end of an input

z “T” for two terminators; a carriage return(CR) and a line feed(LF). z “O” for one terminator; a carriage return(CR). z “N” for no terminator; message can be terminated by EOI.

string. Using incorrect terminators can lock the bus.

Bird 4421 RF Power Meter

Prefixes (Px)

Function Turns the prefix mode on or off. Set x to:

Remarks Prefixes are sent over the bus with the measurement, and indicate the status

z “Y” to enable prefixes. z “N” to disable prefixes.

of the current measurement (see Table 5-10 for examples):

z “FC”,”FD”,”RC”,”RD”,”SW”,”RL”,”MN”,”MX” indicates the measure-

ment type.

z “U” indicates underflow; the value sent is “.000”. z “O” indicates overflow; the value sent is “199.9”. z “N” indicates normal; the value sent is a normal on-scale reading. z “4421” indicates the Bird model number.

Table 5-10 Prefix Examples

Data String Description

Triggers (Tx)

Function Selects the condition which will trigger a reading (see Table 5-11).

Remarks Failure to trigger device before requesting a reading will lock the bus.

NFC.0.123W(CR)(LF)

OFC 199.9W(CR)(LF)

199.9W(CR)(LF)

URD .000W(CR)(LF)

Normal (N) forward carrier wave (FC), prefixes on

Overflowed (O) forward carrier wave (FC), prefixes on

Overflowed forward carrier wave, prefixes off

Underflowed (U) reflected dBm (RD), prefixes on

T1 halts the bus until a reading is available. T0 and T1 do not set the measurement complete SRQ. T2, T3, T4, and T5 set a SRQ when the measurement is complete. Fastest reading rate is 2.4 readings/second; slowest is 1 reading/sec.

Table 5-11 Trigger Conditions

Command Trigger Condition

T0 Continuous on talk

T1 One shot on talk

T2 Continuous on GET

T3 One shot on GET

T4 Continuous on measurement command (FC,FD,

RC, RD, SW, RL, MN, MX)

T5 One shot on measurement command (FC, FD,

RC, RD, SW, RL, MN, MX)

IEEE-488 GPIB Interface

Header Measurement Function Range Prefix Te rm i na t or Trigger SRQ Mask EOI Response

TERM

–4420–F

RYYPYYTT1M00K

SRQ Mask (Mxx)

Function Selectively masks status bits to prevent unwanted service requests.

Remarks If a status bit is masked (bit set to 0), SRQs won’t be generated for that condition.

Set xx to the sum of the binary values of the desired SRQ trigger bits. For example, M12 would set the SRQ for both operation complete and underrange (values 8 and 4). Set xx to “00” to never generate an SRQ.

Table 5-12 SRQ Mask Bits

Binary Value Bit Number Message

1 0 (LSB) Error (IDDC, IDDCO, self-test fail)

2 1 Measurement overrange

4 2 Measurement underrange

8 3 Operation complete

4 Not Used

5 Not Used

6 Can’t mask

7 (MSB) Not Used

Status (Ux)

Function Reads a status word and returns the information as a string. Set x to:

Remarks After sending the status command, a status word is sent the next time the

z “0” for machine status. z “1” for error status. z “2” for revision history.

unit is addressed to talk. To ensure the correct status is transmitted, the status word should be requested as soon as possible after the command is sent.

Machine Status Word (U0) - The format of the machine status word is shown in Figure 9. The default values are also shown.

Figure 9 Machine Status Word Format

Bird 4421 RF Power Meter

Header Command Status (shown valid) Command Option Status (shown valid) Self-test results (shown fail)

TERM

4–420V

MVC0F

–

Header Writable stores Software Rev level Hardware Rev level IEEE-488 1978 compliance IEEE-488 Bus address

* YY is replaced with current software revision level. ** ZZ is replaced with current hardware revision level.

***

4–420X

XXXXXYYZZ7806

–

TERM

Error Status Word (U1) - The format of the error status word and the possible error messages are shown in Figure 10. When an error occurs, an error is also flagged in the status (serial poll) byte, and a SRQ may be generated (See “SRQ Mask” on page 21). All flags will revert to their non-error states after the U1 command is sent.

Figure 10 Error Status Word Format

Status Meaning Description

ICM Invalid Command Set when an illegal device-dependent command

(IDDC) such as V2 is received. (V is illegal)

VCM Valid Command Set when no IDDC is received.

ICO Invalid Command Option Set when an illegal device-dependent command

option (IDDCO) such as T6 is received. (6 is illegal)

VCO Valid Command Option Set when no IDDCO is received.

PS Self-Test Pass Set when a self-test has been initiated by the

J0 command and the test result is acceptable.

FL Self-Test Fail Set when the self-test has failed. (This is the

default condition.)

Revision History Word (U2) - The format of the revision history word is shown in Figure 11.

Figure 11 Revision History Word Format

 Note: If Writable stores parameter has not been set, this command

responds only with -4420-.

IEEE-488 GPIB Interface

Self Test (J0)

Function Initiates a hardware and software test.

Remarks Results are stored in the U1 status word (see “Status” on page 21).

End Or Identify (Kx)

Function Enables or disables the End or Identify (EOI) signal. Set x to:

Remarks Disabling EOI can cause some controllers to lock unless another terminator is used.

“J0” must be sent each time before reading the result.

z “Y” to enable. z “N” to disable.

When enabled, EOI is only asserted at the end of a multiple byte string.

Writable Store (Wxx xxx x)

Function Storage for six bytes of ASCII data.

Remarks Data stored is lost when the 4421 is turned off.

Data is sent back as part of the U2 status word.

Bird 4421 RF Power Meter

Chapter 5 RS-232 Interface

This chapter discusses setup of the RS-232 interface feature and describes the RS-232 commands that apply to the Bird 4421. Operators should understand EIA Standard RS-232-C and have basic computer programming skills before writing any programs.

Description

The Bird 4421 RS-232 interface feature is an integral part of the I/O hub circuit board inside of the mm21. An eight-position DIP switch is used to set operational conditions such as baud rate, parity, and stop bits. The bottom line of the display indicates the current bus status.

Cable Connector

The interface uses a standard 25-pin RS-232 connector. Pin assignments are listed in Table 6-13. If the controller uses a different wiring arrangement, do not attempt to rewire the interface module’s connector. A null modem kit should be used for rewiring instead.

Table 6-13 RS-232 Pin Assignments

Indicators

Pin Designation Notes

1 Protection Ground Chassis Ground 2 Transmit Data 3 Receive Data 4 Request to Send (Output) Set true after module power up 5 Clear to Send (Input) Set by input device. When true, it enables the

module to transmit. When false, it disables transmission.

6 Data Set Ready (Input) Set internally true by module 7 Signal Ground Return path for data and control signals 8 Receive Signal DET (Input) Set true by module

20 Data Terminal Ready (Output) Set true after module power up

The bottom line of the power meter’s display shows indicators describing the status of the Bird 4421 when used with the RS-232 interface. These are:

TALK - When TALK is displayed, the power meter is transmitting data. This is always shown when the unit is in “talker-only” mode.

LISTEN - When LISTEN is displayed, the power meter is receiving data.

Bird 4421 RF Power Meter

21436587

Setup

DIP Switch

Set the DIP switches according to application needs and the requirements of the controller. Available settings and factory defaults are listed in Figure 12.

 Note: There are several button styles on DIP switches (slide, rocker,

lever). Examine the DIP switch to determine the ON and OFF positions.

Figure 12 RS-232 Interface Default DIP Switch Settings

 Note: If you change switch settings when the unit is ON, the new

settings will not become effective unitl you turn power OFF and then back ON.

Switch Function Description

1 Stop Bit ON 1 Stop Bit

OFF2 Stop Bits

2 Command

Mode

3 Word Length ON 8 Data Bits*

4,5 Parity (4) (5)

6,7,8 Baud Rate (6) (7) (8)

ON ENT command needed before sending reading to controller* OFFTrigger automatically sends reading Reading also sent when front panel push button pressed

OFF7 Data Bits

ON ON ON OFF OFFON OFFOFF

ON ON ON OFFON ON OFFOFF OFFON ON OFFON OFF OFFOFFON OFFOFFOFF

* Default factory setting † For more information see “Auto Baud”

No Parity* Odd Parity Even Parity Mark Parity

Auto Baud 300 600 1200 2400* 4800 9600

†

RS-232 Interface

Auto Baud

Talker-Only Mode

Auto Baud is used to automatically determine the correct transmission rate. After setting DIP switches 1 through 5, follow the steps below to use auto baud:

1. Set DIP switches 6, 7, and 8 to ON.

2. Connect a controller to the power meter.

3. Turn the power meter on.

4. Send the character U (hexadecimal 55) from the controller to the power meter.

5. Wait 1 second.

6. If the power meter’s front panel displays LISTEN, the baud rate has been determined. If not, repeat steps 4 and 5.

If, after 30 seconds, the module cannot absolutely determine a baud rate, it will choose a rate based on data acquired during the test.

 Note: Auto Baud is the only automatically chosen setting. Other

items such as parity and stop bits must be manually selected.

The Bird 4421 can be set up for manual operation while automatically sending data to an output device (Talker-Only Mode). To do so, turn DIP switch 2 OFF and cycle the power. TALK will be displayed.

In Talker-Only mode, pressing a button on the meter triggers a measurement. When the measurement is complete, the information is sent to the bus.

Command Syntax

The Bird 4421 accepts two types of commands. General bus commands are commands, such as Initialize (INT), that apply to any RS-232 interfaced device. Device-dependent commands are specific to the 4421.

If an invalid command is sent to the unit, an error condition is placed in the serial poll byte and the offending command is not executed.

A group of device-dependent commands can be sent as a single string as long as like command categories are not repeated. For example: “PNFCFDT3TRG”. This string sets up the 4421 to send no prefixes, read forward dBm, make one reading on “TRG”, and triggers a measurement.

General Bus Commands

The general bus commands supported by the RS-232 interface module are listed in Table 6-14.

Table 6-14 RS-232 General Bus Commands

 Note: Commands can be entered in either upper or lower case.  Note: Only the last command entered of each category will be exe-

Command Effect on Bird 4421

INT Returns to default conditions ENT Sends a reading to the controller TRG Triggers reading in T3 mode

B1 to B7 Selects a baud rate

XO/XF Enables/disables software handshake

Bird 4421 RF Power Meter

INiTialize (INT)

Function Resets the Bird 4421 and returns it to the factory defaults. Remarks If INT is linked with any other command within a string, it must be separated

ENTer (ENT)

Function Makes the power meter transmit a reading to the controller. Remarks A measurement must have already been triggered, placing a reading in the

TRiGger (TRG)

Function Initiates a measurement if the power meter is in trigger mode (T3).

from that command by a space.

output buffer. To send a reading whenever a measurement is triggered, set DIP switch 2 to

OFF. The ENT command will not need to be sent.

Baud Select (Bx)

Function Selects a baud rate listed in Table 6-15. Remarks When the meter recognizes a valid Bx command, its baud rate is immediately

changed. (The controller is assumed to be transmitting at the new rate; otherwise sending commands would not be possible.)

This command overrides the DIP switch setting.

Table 6-15 Baud Rates

Xmission Flow Control (XO/XF)

Function Enables or disables the XON/XOFF flow control.

z XO enables flow control. z XF disables flow control.

Command Baud Rate

B2 300 B3 600 B4 1200 B5 2400 B6 4800 B7 9600

Remarks When data is being sent from the power meter to the computer and flow con-

trol is enabled, data transmission will be suspended when the XOFF character (hexadecimal 13) is sent by the computer. Transmission will resume when XON (hex 11) is sent by the computer.

When data is being sent from the computer to the power meter, XOFF will be sent to the computer when the input buffer fills up. XON will be sent to the computer when the buffer has emptied.

RS-232 Interface

Device Dependent Commands

The device-dependent commands used by the 4421 Power Meter are listed in Table 6-16, organized by category.

Table 6-16 RS-232 Device Dependent Command Summary

Category Command Description

Measurement FC Forward carrier wave

Range RYY Auto range on

Terminators YT Two terminators: CR, LF

Prefixes PY Prefix YES

Triggers T0 Continuous on ENT

Status U0 Send back current machine state

Self-Test J0 Run self-test Writable Store WXXXXXX Place XXXXXX in RAM

FD Forward dBm RC Reflected carrier wave RD Reflected dBm SW Standing wave ratio RL Return loss MN Minimum value MX Maximum value

R00 to R17 Manual ranges RNN Auto range off, stay at present range

YO One terminator: CR YN No terminator

PN Prefix NO

T1 One shot on ENT T3 One shot on TRG T5 One shot on measurement command

U1 Send back error conditions U2 Send back revision levels

Forward Carrier Wave (FC) Forward dBm (FD) Reflected Carrier Wave (RC) Reflected dBm (RD)

Function Selects forward or reflected RF power measurement mode. Remarks Measurement results are returned in Watts or dBm.

Standing Wave Ratio (SW) Return Loss (RL)

Function Selects SWR or return loss match measurement mode. Remarks Measurement results are returned in VSWR or dB.

Bird 4421 RF Power Meter

MiNimum Value (MN) MaXimum Value (MX)

Function Selects minimum or maximum measurement mode. Remarks Another measurement must be selected before selecting min or max.

Returns the minimum (or maximum) value of the previous measurement type.

Range (Rxx)

Function Selects a measurement range listed in Figure 6-17. Remarks If the selected range is outside the range of the connected power sensor, the

command is ignored.

Table 6-17 Measurement Ranges

Command Power Range

RYY Turn auto range on

RNN Turn auto range off. Keep present range

R17 18.0 – 199.9 MW

R16 1.80 – 19.99 MW

R15 0.180 – 1.999 MW

R14 18.0 – 199.9 kW

R13 1.80 – 19.99 kW

R12 0.180 – 1.999 kW

R11 18.0 – 199.9 W

R10 1.80 – 19.99 W

R09 0.180 – 1.999 W

R08 18.0 – 199.9 mW

R07 1.80 – 19.99 mW

R06 0.180 – 1.999 mW

R05 18.0 – 199.9 µW

R04 1.80 – 19.99 µW

R03 0.180 – 1.999 µW

R02 18.0 – 199.9 nW

R01 1.80 – 19.99 nW

R00 0.180 – 1.999 nW

Ter mi na to rs ( Yx )

Function Selects the characters that follow the end of a data string. Set x to:

Remarks Many controllers use the terminator sequence to recognize the end of an input

Prefixes (Px)

Function Turns the prefix mode on or off. Set x to:

z “T” for two terminators; a carriage return(CR) and a line feed(LF). z “O” for one terminator; a carriage return(CR). z “N” for no terminator.

string. Using incorrect terminators can lock the bus.

z “Y” to enable prefixes. z “N” to disable prefixes.

RS-232 Interface

Remarks Prefixes are sent over the bus with the measurement, and indicate the status

of the current measurement (see Table 6-18 for examples):

z “FC”,”FD”,”RC”,”RD”,”SW”,”RL”,”MN”,”MX” indicates the measure-

ment type.

Table 6-18 Prefix Examples

Data String Description

Triggers (Tx)

Function Selects the condition which will trigger a reading (see Table 6-19).

Remarks Failure to trigger device before requesting a reading will lock the bus.

NFC.0.123W(CR)(LF)

OFC 199.9W(CR)(LF)

199.9W(CR)(LF)

URD .000W(CR)(LF)

Fastest reading rate is 2.4 readings/second; slowest is 1 reading/sec.

Normal (N) forward carrier wave (FC), prefixes on

Overflowed (O) forward carrier wave (FC), prefixes on

Overflowed forward carrier wave, prefixes off

Underflowed (U) reflected dBm (RD), prefixes on

Table 6-19 Trigger Conditions

Command Trigger Condition

Continuous on ENT

One shot on ENT

One shot on TRG

One shot on measurement command (FC, FD, RC, RD, SW, RL, MN, MX)

Status (Ux)

Function Reads a status word and returns the information as a string. Set x to:

Remarks After sending the status command, a status word is sent the next time the

z “0” for machine status. z “1” for error status. z “2” for revision history.

unit is addressed to talk. To ensure the correct status is transmitted, the status word should be requested as soon as possible after the command is sent.

Bird 4421 RF Power Meter

Header Measurement Function Range Prefix Terminator Trigger XON / XOFF

TERM

–4420–F

RYYPYYTT1X0

Header Command Status (shown valid) Command Option Status (shown valid) Self-test results (shown fail)

TERM

4–420V

MVC0F

–

Header Writable stores Software Rev level Hardware Rev level Interface standard

* YY is replaced with current software revision level. ** ZZ is replaced with current hardware revision level.

***

4–420X

XXXXXYYZZ

–

TERMRS-232

Machine Status Word (U0) - The format of the machine status word is shown in Figure 13. The default values are also shown.

Figure 13 Machine Status Word Format

 Note: This command sets the unit to the settings that were last

issued remotely (through RS-232 or GPIB). Therefore, it will over ride any manual changes selected at the front panel of the unit.

Error Status Word (U1) - The format of the error status word and the possible error messages are shown in Figure 14. All flags will revert to their non-error states after the U1 command is sent.

Figure 14 Error Status Word Format

Status Meaning Description

ICM Invalid Command Set when an illegal device-dependent command

(IDDC) such as V2 is received. (V is illegal) VCM Valid Command Set when no IDDC is received. ICO Invalid Command

Option

Set when an illegal device-dependent command

option (IDDCO) such as T6 is received. (6 is

illegal) VCO Valid Command Option Set when no IDDCO is received. PS Self-test Pass Set when a self-test has been initiated by the J0

command and the test result is acceptable. FL Self-test Fail Set when the self-test has failed. (This is the

default condition.)

Revision History Word (U2)The format of the revision history word is shown in Figure 15.

Figure 15 Revision History Word Format

RS-232 Interface

Self Test (J0)

Function Initiates a hardware and software test. Remarks Results are stored in the U1 status word (see “Status” on page 31).

“J0” must be sent each time before reading the result.

Writable Store (Wxx xxx x)

Function Storage for six bytes of ASCII data. Remarks Data stored is lost when the 4421 is turned off.

Data is sent back as part of the U2 status word.

Bird 4421 RF Power Meter

Chapter 6 Maintenance

This chapter describes routine maintenance, along with troubleshooting instructions for the power meter and power sensor. Disassembly instructions for the Bird Cal Cart are also provided. For service beyond this level, return the unit to a qualified service center.

WARNING

To avoid personal injury, disconnect the power cord from the AC line before

performing any maintenance, including fuse replacement or changing the

line voltage setting.

WARNING

Never attempt to connect or disconnect RF equipment from the transmission

line while RF power is being applied.

Leaking RF energy is a potential health hazard.

WARNING

The Bird 4421 contains no user-serviceable parts. Do not remove its cover.

The Bird 4421 Power Meter requires only simple, routine maintenance.

z Wipe off dust and dirt regularly. z Check the connectors and cables for damage. z Clean the connector contacts with alcohol or dry cleaning solvent.

Cleaning

Troubleshooting

CAUTION

Do not use harsh or abrasive detergents for cleaning.

Clean the Bird 4421 Power Meter and its display with a soft cloth dampened with mild detergent and water only. Clean sensors with a dry cleaning solvent that leaves no residue.

Since the power meter and power sensor can only work together, the first step is to determine which is malfunctioning. Connect the power sensor to the meter and perform the functional test on page 37. If the power meter is malfunctioning, refer to the troubleshooting table below. If the power sensor is malfunctioning, return it for service.

CAUTION

Due to the complexity of the Bird Power Sensor, field repairs beyond general

maintenance should not be attempted.

Removal or disturbance of the power sensor cover can result in cancellation

of lifetime warranty.

This manual cannot list all malfunctions that may occur, or corrective actions. If a malfunction is not listed or is not corrected by the listed corrective actions, contact a qualified service center.

 Note: For power sensors in Cal Carts, following the test procedure

will check the sensor not covered by the safety cover. To test the other sensor slide the safety cover over, then proceed as normal.

Bird 4421 RF Power Meter

PROBLEM POSSIBLE CAUSE CORRECTION

Power meter has no power

Dash moves across the display

Display blank or not updating

Power meter turns off while on battery power

Push buttons do not respond

Every segment on the display is lit

IEEE-488 Interface does not respond to the interface link

RS-232 Interface does not respond to the interface link. Fails J0 selftest command.

With the RS-232, the power meter displays “TALK” but does not operate as expected.

Have the batteries been charged?

Is the power meter’s ac power cord connected?

Is the ON/OFF rocker switch on the rear panel set to OFF?

(Cal Cart only)

Is the Cal Cart’s AC power cord connected to the AC line?

Blown fuse? Check fuse rating and replace fuse

Is the sensor cable connected to both the power meter and power sensor?

Is the sensor cable defective?

Have the batteries been charged?

Is “LO BAT” displayed? YES: Recharge battery

Test the push buttons (See “Push Button Test” on page 37). Are they defective?

Are the address in the interface program and the address setting on the DIP switches on the interface module the same?

Send the “J0” self test command, then check the status. Does the power meter fail the self test?

Is the IEEE cable defective? Replace IEEE interface cable.

Are the DIP switches set correctly?

Is the RS-232 cable defective?

Is DIP switch 2 set correctly? For “talk/listen” operation, set this

Is DIP switch 1 set correctly? Set DIP switch 1 as indicated in

Recharge the batteries.

Connect the power cord.

Set the switch to ON.

Connect AC power.

(See “Replacing Fuses” on page 39).

Connect sensor cable.

Replace sensor cable.

NO: Recharge battery YES: Return meter for service.

NO: Return meter for service.

Return meter for service.

Change the program or DIP switch setting so that the addresses are the same (See “Dip Switch” on page 12).

Replace I/O hub PCB.

Set DIP switches.

Replace RS-232 interface cable.

switch to ON. For “talk always” set this switch to OFF.

Figure 8.

Maintenance

Meter’s

Model

Number

Meter’s

Software

Rev. Date

Sensor’s

Model

Number

Sensor’s Software

Rev. Date

–..4421..–07.01.02–..4021..–07.01.02–

Functional Test

1. Turn the power meter off. The ON/OFF switch on the rear panel should be OFF and the ac power cable should be connected.

2. Turn ON the ON/OFF switch on the rear panel of the meter.

3. While holding down the FWD and SWR push buttons, press the ON/OFF button on the front panel of the power meter. Immediately release all three.

 Note: The unit tests the display on power up cycling through and

activating each segment two times and then activating all segments at once two times.

4. The power meter’s model number and revision date should scroll across the display. If a dash “–” is displayed instead, then the meter is malfunctioning.

5. The power sensor’s model number and revision date should scroll across the display. If a dash is displayed after the power meter data, then the power sensor is malfunctioning.

Figure 16 Test Display, No Malfunction

Push Button Test

 Note: If a push button is malfunctioning, return the power meter.

1. Disconnect the power sensor.

2. Turn the power meter ON.

 Note: After the power up display disappears, a dash “–” should

scroll across the display.

3. Turn the power meter OFF.

4. Connect the power senson.

5. Turn the power meter ON.

 Note: “AUTO” and “FWD” should be displayed, and a reading of

“0.00 W” (or a very low number).

6. Press RFL.

 Note: “FWD” should change to “RFL” on the display. The reading

should remain the same.

7. Press SWR.

 Note: “RFL” should change to “SWR”. “0.00 W” should change to

“ ” (underrange error).

8. Hold down MIN.

 Note: “ ” should change to “ ” (overrange error).

9. Release MIN.

 Note: “ ” should change to “ ”.

10. Press dBm.

 Note: “SWR” should turn OFF and “dBm” should turn ON..

Bird 4421 RF Power Meter

11. Press dBm.

 Note: “dBm” should change to “SWR”.

12. Press FWD.

 Note: “SWR” should change to “FWD” and “ ” to “.0000 W” (or a

very low number).

13. Hold down MAX.

 Note: “.0000” should change to “1.0000”.

14. Release MAX.

 Note: “1.0000” should change to “.0000” (or a very low number).

15. Press LIGHT.

 Note: The back-light should turn on.

16. Press LIGHT.

 Note: The back-light should turn off.

17. Press s (up).

 Note: The power meter should change ranges each time it is

pressed until it reaches “0.000 KW”.

18. Press t (down).

 Note: The power meter should change ranges each time it is

pressed until it reaches “0.00 W”.

19. Turn the power meter OFF.

Repair

To avoid personal injury, disconnect the power cord from the AC line before

Front Panel (Cal Cart only)

1. Remove both screws on the front panel, between the RF connector and the

2. Pull on the handle set into the base of the front panel to remove it.

Figure 17 Cal Cart Wiring Schematic

WARNING

performing any maintenance, including fuse replacement or changing the

line voltage setting.

 Note: If the power meter is mounted in a Cal Cart, to access the

power sensor or the ac connections, it will be necessary to remove the front panel of the Cal Cart.

handle.

 Note: When making AC connections, refer to the following wiring

diagram.

Maintenance

Fuse 1

Fuse 2

Fuse

Drawer

AC Module

Cord Reel (Cal Cart only)

1. Disconnect the cord reel from the terminal strip.

2. Unscrew the AC connector.

3. Unscrew and remove the cord reel.

4. Screw the replacement cord reel into place.

5. Thread the AC connector through the grommet, and connect the wires on

Replacing Fuses

1. Gently pry the fuse drawer out of the ac module. The fuse holder does not

2. Install the replacement fuses then close and secure the fuse holder. Fuse 1

the other end to the terminal strip (See Figure 18).

WARNING

To avoid personal injury, disconnect the power cord from the ac line before

performing any maintenance, including fuse replacement.

CAUTION

Failure to install the properly rated fuse may result in equipment damage or

nuisance failures.

detach from the AC module.

is a spare fuse and fuse 2 is the active fuse.

AC Line Voltage Fuse Rating

115 Vac T630 mA, 5x20 mm Time Lag Fuse 230 Vac T315 mA, 5x20 mm Time Lag Fuse

Figure 18 AC Line Fuse

Bird 4421 RF Power Meter

Replacing Batteries

WARNING

Exposed AC line voltage (115 VAC or 230 VAC). Disconnect the power cord

from the AC line before replacing the batteries. Failure to comply may

result in severe electrical shock or death.

WARNING

Use only Nickel Metal Hydride (NiMH) batteries that have a minimum

damage to the instrument, and injury to personnel from battery chemicals.

1. Disconnect the AC power cord from the ac mains supply.

2. Remove the four screws that secure the top cover.

3. Lift the top cover to access the attached ground wire then disconnect the ground wire and remove the cover.

4. Unfasten the battery retaining belts then remove the battery tubes (Figure 19). Be sure to note the polarity and orientation of the battery tubes before removing them.

5. Remove the batteries from each tube and insert replacement batteries. Be sure to note the polarity (positive and negative) arrangement of the batteries.

6. Install the battery tubes into the unit and secure with the retaining belts. Be sure to position the retaining belts as they were before removal and tighten them securely.

7. Connect the ground wire to the top cover.

8. Install the top cover and secure it with the four screws removed earlier.

Figure 19 Batteries

Item Description

1 Battery retaining belt 2 Battery tube (batteries inside)

Long Term Storage

Do not store the instrument for long periods of time without recharging the batteries. When the instrument is stored for long periods of time without use, the batteries will loose their charge and also loose the ability to reach full charge when put into service. To restore the battery charge, perform a full charge for 28 hours. If the batteries are not fully charged after 28 hours, completely discharge the batteries then perform a full charge again. If necessary, repeat this discharge and charge cycle up to three times. If the batteries do not remain charged after three discharge-charge cycles, replace the batteries.

Maintenance

Power Sensor (Cal Cart only)

To avoid personal injury, disconnect the power cord from the AC line before

performing any maintenance, including fuse replacement or changing the

Never attempt to connect or disconnect RF equipment from the transmission line while RF power is being applied. Leaking RF energy is a potential health hazard.

The Bird 4421 must be powered off when connecting or disconnecting the

Changing the sensor’s connectors will invalidate calibration data, and may

Due to the complexity of the Bird Power Sensor, field repairs beyond general

maintenance should not be attempted. Removal or disturbance of the power

1. Disconnect the RF line from the Cal Cart.

2. Remove the Cal Cart front panel (see "Front Panel (Cal Cart only)" on page 38).

3. Disconnect the sensor cable from the power sensor.

4. Disconnect the RF cable from the sensor output port.

5. Remove the screws on the sensor mounting bracket.

6. Remove the sensor from the mounting bracket.

7. Put the new sensor in the bracket and screw it into place.

 Note: Make sure the arrow on the side of the sensor points towards the load,

8. Connect the RF cable to the sensor end labeled “LOAD”. Connect the sensor cable.

9. Replace the Cal Cart front panel.

Load

WARNING

line voltage setting.

WARNING

CAUTION

power sensor from the power meter.

CAUTION

reduce the maximum power rating of the unit.

CAUTION

sensor cover can result in cancellation of lifetime warranty.

and that the end labeled “SOURCE” points towards the front of the Cal Cart.

Casters

Handle

WARNING

Heavy load. Do not attempt to lift unaided.

1. Disconnect all RF cables from the RF connectors on the load.

2. Unplug the blower assembly on blower-equipped loads.

3. Replace the vent plugs with the shipping plugs.

4. Remove the mounting bolts connecting the load to the Cal Cart.

5. Remove the load.

1. Remove the load (See "Load" on page 41).

2. Flip the cart over.

3. Unscrew the defective caster.

4. Screw the new caster into place and replace the load.

1. Unscrew the hadle

2. Remove the old handle.

3. Screw the new handle into place.

Bird 4421 RF Power Meter

Storage and Shipment (Cal Cart only)

Cover the unit before storing to keep out dust and dirt. It is not necessary to install the shipping plug. Store in a dry, dust-free environment where the ambient temperature will remain between –20 and +50 °C (–4 to +122 °F).

Before shipping the Bird Cal Cart, take the following precautions:

z Remove the vent plugs and replace them with the shipping plugs.

Wrap the vent plugs with padding and tape them to the side of the load for protection.

 Note: With the shipping plugs installed, it is not necessary to

empty out the coolant.

z Repack in the original carton or contact Bird for a transit case.

Specifications, Cal Cart

To determine the model numbers of the Cal Cart components, refer to "About This Manual" on page x. For load specifications, refer to the load manual included.

 Note: Certain sensors or connectors may be incompatible with

some models. Refer to "About This Manual" on page x for a list of available components, or contact Customer Service.

Max. Power

Under normal operating conditions, the Cal Cart’s maximum power is the MINIMUM of the max. power of the sensor and the max. power of the load. The following modifiers apply:

z Above 65 MHz, derate the load’s max. power. See "High Frequency

Derating 1" on page 47.

z Due to the wide variety of available connectors, frequency range and

maximum power may be reduced. Insertion loss is specified with female N connectors. Choose connectors appropriate for the frequency and power of operation.

z Derate RF power by 2.5% for every 305m (1,000 ft.) above 1,520m (5,000 ft.).

Table 7-20 Bird Cal Cart

Frequency Range Sensor dependent, 30 MHz max. Power Range Dependent on sensor, sensor connectors, and load Connectors Customer specified (See "Available Connectors" on page 49) Dimensions

Short Cart Long Cart

Weight, Nominal

Short Cart Long Cart

Temperature Range

Operating Storage

Altitude 1520 m (5000 ft.) Humidity 85% noncondensing max Calibration Cycle,

Nominal 1 year CE CE Compliant. Refer to Declaration of Conformity for specific

42”L x 20”W x 42”H (1067 x 508 x 1067 mm) 52”L x 20”W x 42”H (1321 x 508 x 1067 mm)

175 lbs. (80 kg) 290 lbs. (114 kg)

0 to +35 °C (32 to +95 °F) –20 to +70 °C (–4 °F to +158 °F)

standards.

Maintenance

Specifications, 4421 Power Meter

Specifications, Power Sensors

Table 7-21 Bird 4421 RF Power Meter

Frequency Range Sensor dependent Power Range Sensor dependent VSWR Display 1.0 – 199.9 max Return Loss Display 0 to 40 dB max Display Accuracy ± 1 on least significant digit AC Power 115/ 230 Vac @ 50/60 Hz; 60 W Batteries 8 Nickel Metal Hydride 1.2 v cells, rechargeable Battery Life Approximately 8 hours continuous usage

Battery Charger Built-in battery charger. Drained batteries require

Display LCD, 4½ digit display. Indicates mode, measurement units,

Optional Interfaces IEEE-488 GPIB

Fuse Rating IEC (5 x 20 mm) Time Lag Type T 115 Vac

230 Vac CE CE Compliant. Refer to Declaration of Conformity for

Humidity 95% max. (noncondensing) Altitude Up to 10,000 feet (3,000 m) Temperature Range Operating

Storage Dimensions 15.5”L x 12.25”W x 4.25”H (393 x 311 x 108 mm) Weight, Nominal 9.5 lbs. (4.3 kg)

(reduced after high temperature charging)

approximately 28 hours to recharge.

battery condition, remote status, and signal increase /

decrease. Self contained backlight.

RS-232

T630 mA T315 mA

specific standards.

0 to 50 °C (32 to 122 °F) –20 to +50 °C (–4 to +122 °F)

CAUTION

Changing the sensor’s connectors will invalidate calibration data, and may

reduce the maximum power rating of the unit.

Bird 4421 RF Power Meter

RFL Accuracy FWD Accuracy

FWD Power

Directivity 10/

---------------------------------+=

VSWR 1

------+

⎝⎠

⎜⎟

⎛⎞

------–

⎝⎠

⎜⎟

⎛⎞

⁄=

Table 7-22 Specifications Common to all Sensors

Impedance, Nominal 50 ohms Max. Allowable Terminating

VSWR Calibration Technique Frequency-specific calibration factors stored in

Calibration Cycle, Nominal 4027A and 4027F, 6 months

Accuracy, Reflected Calculated from FWD accuracy and FWD power

Accuracy, VSWR Calculated from FWD and RFL power

Sampling Rate, Nominal 2 readings / second Operating Power Supplied by power meter via sensor cable Connectors

4028B10M 4028C10M 4028A Series All other models

CE CE Compliant. Refer to Declaration of Conformity

Humidity, Max. 95% (noncondensing) Altitude, Max. 10,000 feet (3,000 m) Temperature Range

Operating Storage

Dimensions

4028B3M, 4028B10M 4028A Series All other models

Weight, Nominal

4028B3M, 4028B10M, 4028C10M

2.00:1

nonvolatile memory in each sensor. Sensor output corrected for frequency and temperature within specified ranges.

All other models, 1 year

1-5/8” EIA Flanged 3-1/8” EIA Flanged 7-16 DIN, LC, HN, or 7/8” Customer specified from QC list, appropriate for frequency and power.

for specific standards.

0 to 50 °C (32 to 122 °F) –20 to +70 °C (–4 to +158 °F)

6.75”L x 3.5”W x 4.75”H (175 x 89 x 121 mm)

4.7”L x 3.2”W x 3.8”H (120 x 82 x 97mm)

5.2”L x 2.5”W x 3.25”H (137 x 64 x 83 mm)

5 lb. 2 oz. (2.33 kg)

4028A2M, 3M, 4M, 10M, and 25M

All other models

3 lb. 5 oz. (1.5 kg)

1 lb. 13 oz. (0.8 kg)

Maintenance

Table 7-23 Bird 4020 Series RF Power Sensors

RF Power Range

4021, 4022 4024, 4025

Frequency Range

4021 4022 4024 4025

Accuracy, Fwd, Best Case

VSWR, Max.

4021, 4024, 4025 4022

Insertion Loss, Max.

4021, 4024, 4025 4022

Directivity, Min.

4021, 4022 4024 4025

* For rated accuracy, no more than 1% AM; Harmonics –50 dBc or less

Derate accuracy by 3.0% (1σ) below 15 °C and above 35 °C

Changing the sensor’s connectors will invalidate calibration data, and may

reduce the maximum power rating of the unit.

300 mW – 1 kW 3 W – 10 kW

1.8 – 32 MHz 25 MHz – 1 GHz

1.5 – 32 MHz 100 kHz – 2.5 MHz

± 3% (1σ)

1.05:1

1.05:1, 25 – 512 MHz and 1.10:1, 512 MHz – 1 GHz

0.05 dB

0.05 dB, 25 – 512 MHz and 0.13 dB, 512 MHz – 1 GHz

30 dB 28 dB, 1.5 – 2.5 and 25 – 32 MHz and 30 dB, 2.5 – 25 MHz 28 dB, 100 – 125 kHz and 30 dB, 125 – 2500 kHz

CAUTION

Table 7-24 Bird 4027A Series RF Power Sensors

Frequency Range

4027A250K 4027A400K 4027A800K 4027A2M 4027A4M 4027A10M

RF Power Range

4027A12M 4027A25M 4027A35M 4027A60M

Accuracy, Fwd, Best Case Calibration Frequencies, Typical (MHz)

4027A250K 4027A400K 4027A800K 4027A2M 4027A4M 4027A10M

Calibration Power, Typical

4027A12M All other models

VSWR, Max. 1.05:1 Insertion Loss, Max. 0.05 dB (with female “N” connectors) Directivity, Min.

4027A12M All other models

* For rated accuracy, no more than 1% AM; Harmonics –50 dBc or less

Derate accuracy by 1% (1σ) outside cal. power or cal. frequency Derate accuracy by 1% (1σ) below 15 °C and above 35 °C

† Other calibration frequencies available upon request

250 – 400 kHz 400 – 550 kHz 800 – 950 kHz

1.5 – 2.5 MHz 3 – 5 MHz 10 – 15 MHz

300 mW – 1 kW 3 W – 9 kW 3 W – 7.5 kW 3 W – 6 kW

0.25, 0.40

0.40

0.90

1.8, 2.0, 2.17

4.0, 5.0

10.0, 13.56, 15.0

4027A12M 4027A25M 4027A35M 4027A60M 4027A100M 4027A150M

4027A100M 4027A150M All other models

± 1.0% (1σ)

†

4027A12M 4027A25M 4027A35M 4027A60M 4027A100M 4027A150M

700 W

1.7 kW

30 dB 28 dB

10 – 15 MHz 25 – 30 MHz 35 – 45 MHz 45 – 65 MHz 95 – 105 MHz 150 – 170 MHz

3 W – 4 kW

3.75 W – 3.75 kW 3 W – 10 kW

10.0, 13.56, 15.0

25.76, 27.12, 28.48

40.68

55.0, 60.0

95.0, 100.0

162.0

Bird 4421 RF Power Meter

Table 7-25 Bird 4027F Series RF Power Sensors

Frequency Range

4027F2M 4027F10M 4027F60M

1.8 – 2.2 MHz 12 – 15 MHz 57 – 63 MHz

RF Power Range

4027F2M, 4027F10M 4027F60M

0.1 – 10 kW

0.1 – 3 kW

Accuracy, Fwd, Best Case ± 1.0% (2σ) Calibration Frequencies, Typical

4027F2M 4027F10M 4027F60M

1.8, 2.0, 2.17 MHz

12.0, 12.5, 13.56, 14.0, 15.0 MHz

57.0, 58.5, 60.0, 61.5, 63.0 MHz

Calibration Power, Typical 1.7 kW Harmonic Rejection, Min.

4027F2M 4027F10M 4027F60M

26 dB @ 3.6 – 3.8 MHz, 30 dB @ > 3.8 MHz 30 dB @ > 25 MHz 30 dB @ > 114 MHz

Low Frequency Rejection, Min.

4027F10M 4027F60M

30 dB @ < 1 MHz 30 dB @ < 15 MHz

Max Error Induced by 10% AM

4027F2M, 4027F10M 4027F60M

0.2% @ < 5 kW, 1.0% @ 5 – 10 kW

0.2% @ < 1.5 kW, 1.0% @ 1.5 – 3 kW

VSWR, Max. 1.05:1 Insertion Loss, Max. 0.05 dB (with female “N” connectors) Directivity, Min. 28 dB

* Other calibration frequencies available upon request

Table 7-26 Bird 4028A and 4028B Series RF Power Sensors

Frequency Range

4028A250K 4028A400K 4028A2M 4028A3M 4028A4M

250 – 400 kHz 400 – 550 kHz

1.5 – 2.5 MHz

2.5 – 3.5 MHz

3.5 – 4.5 MHz 4028A10M, 4028B10M, 4028C10M 4028A25M 4028B3M

10 – 15 MHz 25 – 30 MHz

2.5 – 4 MHz

RF Power Range

4028A250K, 4028A400K 4028C10M All other models

Accuracy, Fwd, Best Case Calibration Frequencies, Typical

†

(MHz)

4028A250K 4028A400K 4028A2M 4028A3M 4028A4M

1 kW – 20 kW 500W – 50 kW 1 kW – 25 kW

± 2.0% (2σ)

0.25, 0.40

0.40

1.8, 2.0, 2.17

2.5, 3.2, 3.5

3.5, 4.0 4028A10M, 4028B10M, 4028C10M 4028A25M 4028B3M

10.0, 13.56, 15.0

25.76, 27.12, 28.48

2.5, 3.2, 3.5, 4.0

Calibration Power, Typical 3.5 kW VSWR, Max. 1.05:1 Insertion Loss, Max. 0.05 dB (with female 7-16 DIN connectors) Directivity, Min. 28 dB

* For rated accuracy, no more than 1% AM; Harmonics –50 dBc or less

Derate accuracy by 2% (2σ) outside cal. power or cal. frequency Derate accuracy by 2% (2σ) below 15 °C and above 35 °C

† Other calibration frequencies available upon request

Maintenance

Frequency (MHz)

Load Derating Above 65 MHz

5 & 10 kW Loads

Max. Power (kW)

10 100 1000

Specifications, RS-232 Interface

Table 7-27 RS-232 Interface Module

Logic Levels Meets all EIA Standard RS-232-C specifications Modes of Operation Switch and bus selectable Talk Always Allows the 4421 to send to the bus keyboard-initiated

measurements only

Addressable Allows the 4421 to be commanded by an RS-232 interface controller Connector RS-232 Interface Type Humidity, Max 95% (non-condensing) Altitude, Max 10,000 feet (3,000 m) Temperature Range

Operating Storage

0 to 50º C (32 to 122º F) –20 to +50º C (–4 to +122º F)

Dimensions 6.5”L x 4.5” W (165 x 115 mm) Weight 0.5 lbs (0.23 kg) nominal

Specifications, IEEE-488 GPIB Interface

Table 7-28 IEEE-488 Interface

Logic Levels Meets all IEEE Standard 488-1978 specifications Modes of Operation Switch and bus selectable Talk Only Allows the 4421 to send to the bus keyboard-initiated measurements

only

Addressable Allows the 4422 to be addressed as talker or listener under the

command of an IEEE-488 bus controller

Connector Standard IEEE-488 bus type Humidity, Max 95% (non-condensing) Altitude, Max 10,000 feet (3,000 m) Temperature Range

Operating Storage

Dimensions 6.5”L x 4.5” W (165 x 115 mm) Weight, Nominal 0.5 lbs (0.23 kg)

0 to 50º C (32 to 122º F) –20 to +50º C (–4 to +122º F)

Figure 20 High Frequency Derating 1

Bird 4421 RF Power Meter

Frequency (MHz)

Load Derating Above 65 MHz

1 & 2.5 kW Loads

(

)

10 100 1000

0.5

1.0

1.5

2.0

2.5

Figure 21 High Frequency Derating 2

Table 7-29 Replacement Parts

Description Qty Part Number

Fuse, IEC (5 x 20 mm) Time Lag Type T

115 Vac, T630 mA 230 Vac, T315 mA

Cord, AC Power

115 Vac 230 Vac Harmonized

5A2257-14 5A2257-11

5-1286 5A2416

Plug, 115 Vac 1 5A2626 Cable, Sensor 1 4421-038 Grommet 1 4421A372 Cordreel 1 4421A383 Casters 4 4421A384 Handle 1 4421A385 IEEE-488 Bus Interface Module 1 4421-489-2 Cable, IEEE-488

2 m 1 m

5-1317-2 5-1317-1

RS-232 Bus Interface Module 1 4421-233-1 Cable, RS-232

10 ft. 5 ft.

Null Modem Kit (RS-232 only) 1 4380-250

5-1662-2 5-1662-1

Panel Mount Kit 1 4421-250 Battery, C size, NiMH 8 5A1230

Maintenance

Available Connectors

Changing the sensor’s connectors will invalidate calibration data, and may

CAUTION

reduce the maximum power rating of the unit.

Connector P/N

HN (F) 4240-268 LC (F) 4240-031 BNC-Female 4240-125 BNC-Male 4240-132 C-Female 4240-100 C-Male 4240-110 HN-Female 4240-268 HN-Male 4240-278 LC-Female 4240-031 LC-Male 4240-025 Open Term. # 10-32 Nut 4240-080 N (F) 4240-062 7/16 Jack, IEC Type 169-4 4240-344 LT-Female 4240-018 LT-Male 4240-012 N-Female 4240-062 N-Male 4240-063 SC-Female 4240-090 SMA-Female 4240-336 SMA-Male 4240-334 7/16 Jack, IEC Type 169-4 4240-344 7/16 Plug, IEC Type 169-4 4240-363 TRU 6934 (F) 4240-371 TRU 7958 (F) 4240-372 Mini UHF-Female 4240-346 UHF-Female 4240-050 UHF-Male 4240-179 1-5/8” EIA Fixed 4240-096 1-5/8” EIA Swivel 4240-208 7/8” EIA 4240-002 TNC-Female 4240-156 TNC-Male 4240-160

Bird 4421 RF Power Meter

Customer Service

If you need to return the unit for any reason, contact the Bird Service Center for a return authorization. All instruments returned must be shipped prepaid and to the attention of Bird Service Center.

Bird Service Center

30303 Aurora Road Cleveland (Solon), Ohio 44139-2794 Phone: (440) 519-2298 Fax: (440) 519-2326 E-mail: bsc@bird-technologies.com

For the location of the sales office nearest you, give us a call or visit our Web site at:

http://www.bird-electronic.com

Limited Warranty

All products manufactured by Seller are warranted to be free from defects in material and workmanship for a period of one (1) year, unless otherwise specified, from date of shipment and to conform to applicable specifications, drawings, blueprints and/or samples. Seller’s sole obligation under these warranties shall be to issue credit, repair or replace any item or part thereof which is proved to be other than as warranted; no allowance shall be made for any labor charges of Buyer for replacement of parts, adjustment or repairs, or any other work, unless such charges are authorized in advance by Seller.

If Seller’s products are claimed to be defective in material or workmanship or not to conform to specifications, drawings, blueprints and/or samples, Seller shall, upon prompt notice thereof, either examine the products where they are located or issue shipping instructions for return to Seller (transportation-charges prepaid by Buyer). In the event any of our products are proved to be other than as warranted, transportation costs (cheapest way) to and from Seller’s plant, will be borne by Seller and reimbursement or credit will be made for amounts so expended by Buyer. Every such claim for breach of these warranties shall be deemed to be waived by Buyer unless made in writing within ten (10) days from the date of discovery of the defect.

The above warranties shall not extend to any products or parts thereof which have been subjected to any misuse or neglect, damaged by accident, rendered defective by reason of improper installation or by the performance of repairs or alterations outside of our plant, and shall not apply to any goods or parts thereof furnished by Buyer or acquired from others at Buyer’s request and/or to Buyer’s specifications. Routine (regularly required) calibration is not covered under this limited warranty. In addition, Seller’s warranties do not extend to the failure of tubes, transistors, fuses and batteries, or to other equipment and parts manufactured by others except to the extent of the original manufacturer’s warranty to Seller.

The obligations under the foregoing warranties are limited to the precise terms thereof. These warranties provide exclusive remedies, expressly in lieu of all other remedies including claims for special or consequential damages. SELLER NEITHER MAKES NOR ASSUMES ANY OTHER WARRANTY WHATSOEVER, WHETHER EXPRESS, STATUTORY, OR IMPLIED, INCLUDING WARRANTIES OF MERCHANTABILITY AND FITNESS, AND NO PERSON IS AUTHORIZED TO ASSUME FOR SELLER ANY OBLIGATION OR LIABILITY NOT STRICTLY IN ACCORDANCE WITH THE FOREGOING.

Special Lifetime Warranty - Series 4020, Series 4027A, Series 4027F, and Series 4028 Power Sensor Head

In addition to its standard warranty, the Bird Electronic Corporation warrants its Series 4020, Series 4027A, Series 4027F, and Series 4028 Thruline® Power Sensor Heads for lifetime to original purchaser. This extended warranty is against burnout. For the warranty to apply, the Sensor Head must be used with the correct Bird Electronic Corporation Display Unit, the maximum power rating of the Sensor must not be exceeded, the Sensor RF circuit must be properly terminated and the Sensor not subjected to physical abuse.

Bird Electronic Corporation, at its option, will repair or replace the defective Sensor at its world Headquarters at 30303 Aurora Road, Solon, Ohio 44139.

The customer is responsible to pay transportation charges to return the defective sensor to Bird.

Bird 4421 RF Power Meter

Bird Technologies 4421 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Safety Symbols

Warning Statements

Caution Statements

Safety Statements

Changes to this Manual

Contents

Chapter Layout

Table of Contents

Chapter 1 Introduction

Power Meter

Items Supplied

Optional Accessories

Figure 1 Bird 4421 Meter Outline Drawing

Power Sensors

4020 Series

4027A Series

4027F Series

4028 Series

Figure 2 Power Sensor Outline Drawing, 4020, 4027A, 4027F, & 4028A Series

Figure 3 Power Sensor Outline Drawing 4028B Series only

Figure 4 Power Sensor Outline Drawing 4028C Series only

Frequency and Power Ranges

4020 Series

4027A Series

4027F Series

4028 Series

Chapter 2 Installation

Sensor Connection

RF Line Connection

Panel Mounting the 4421 Power Meter

Figure 5 Panel Mounting Dimensions

Handle Operation

Figure 6 Handle Positions

115/230V AC Input Power

AC Line Connectors

Batteries

Chapter 3 Operating Instructions

Push Button Functions

Figure 7 Push Buttons

Error Codes

Table 4-1 Error Codes

Table 4-2 Function Limits

Audible Warning

Chapter 4 IEEE-488 GPIB Interface

Description

Cable Connector

Table 5-3 IEEE-488 Pin Assignments

Interface Capabilities

Indicators

Setup

Table 5-4 IEEE-488 Interface Module Capabilities

Dip Switch

Figure 8 IEEE Interface Default DIP Switch Settings

Talker-Only Mode

Command Syntax

General Bus Commands

Table 5-5 IEEE-488 General Bus Commands

Table 5-6 IEEE-488 Default Conditions

Table 5-7 IEEE Status Byte Description

Device Dependent Commands

Table 5-8 IEEE-488 Device Dependent Command Summary

Table 5-9 Measurement Ranges

Table 5-10 Prefix Examples

Table 5-11 Trigger Conditions

Table 5-12 SRQ Mask Bits

Figure 9 Machine Status Word Format

Figure 10 Error Status Word Format

Figure 11 Revision History Word Format

Chapter 5 RS-232 Interface

Description

Cable Connector

Table 6-13 RS-232 Pin Assignments

Indicators

Setup

DIP Switch

Figure 12 RS-232 Interface Default DIP Switch Settings