BIRD TERMLINE 8141 Bedienungsanleitung

Termaline®

Load Resistor

Operation Manual

Model 8141

Instruction Book Part Number 920-8141 Rev. D

Termaline is a trademark of Bird Electronic Corporation

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 uninterruptible 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.

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.

Safety Precautions

Safety Symbols

Note: Calls attention to supplemental information.

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.

See page 6

See page 11

Caution Statements

The following equipment cautions appear in the text and are repeated here for

emphasis.

CAUTION

See page 5

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.

WARNING

Never attempt to disconnect RF equipment from the transmission line while

RF power is being applied. Leaking RF energy is a potential health hazard.

WARNING

This product contains substrate made of beryllium oxide. This is a potentially

toxic ceramic and may be harmful to health. Beryllia oxide must be disposed

of in accordance with the legal statutes dealing with hazardous material.

Do not attempt to repair this unit, but return to BIRD ELECTRONIC

CORPORATION.

Do not operate this equipment over the rated 250 watts continuously.

Damage to the resistive element will result.

Termaline® Coaxial Load Resistor

iii

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.

IMPIEGO

QUALORA QUESTO STRUMENTO VENISSE UTILIZZATO IN MODO

DIVERSO DA COME SPECIFICATO DAL PRODUTTORE LA

PROZIONE DI SICUREZZA POTREBBE VENIRNE COMPROMESSA.

Safety Precautions

SERVICE

SERVICING INSTRUCTIONS ARE FOR USE BY SERVICE - TRAINED

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, SIND

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.

Termaline® Coaxial Load Resistor

About This Manual

This manual covers the operating and maintenance instructions for the

following models:

Changes to this Manual

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

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

your comments to our Solon, Ohio factory. This manual may be periodically

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

and revision on the title page.

Chapter Layout

Introduction — Describes the features of the load resistor, lists equipment

supplied and optional equipment, and provides power-up instructions.

Theory of Operation — Describes how the load resistor works.

Installation — Describes the power supply and load connection instructions.

Operating Instructions — Describes the base level operation instructions.

Maintenance — Lists routine maintenance tasks as well as troubleshooting

for common problems. Specifications and parts information are also included.

8141 8141-010

Table of Contents

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

Safety Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii

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

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

Safety Statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii

About This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v

Changes to this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v

Chapter Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v

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

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Purpose And Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

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

Dimensions and Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Power and Utility Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Environmental Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Items Supplied . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Items Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Tools and Test Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Chapter 2 Theory of Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Chapter 3 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Chapter 4 Operating Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Normal Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Emergency Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Termaline® Coaxial Load Resistor

vii

Chapter 5 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Outside Surface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Preventive Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

RF Assembly Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

DC Resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

RF Input Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Coolant Oil & Diaphragm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

RF Load Resistor Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Reassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

RF Input Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Coolant Oil & Diaphragm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

RF Load Resistor Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Repairs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Customer Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Shipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Replacement Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Available QC Type Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Limited Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Chapter 1 Introduction

General

This instruction book is intended for use by operators of the Models 8141 and

8141-010 Termaline Load Resistor. This chapter contains introductory

information including product specifications; items supplied; and accessory

items.

Purpose And Function

The Models 8141 and 8141-010 Termaline Load Resistor are portable, general

purpose 50 ohm coaxial transmission line terminations. They are self-contained

units requiring no outside power source or additional equipment. They provide

accurate, dependable, and practically non-reflective terminations for testing

and adjusting transmitters under non-radiating conditions from DC to 2500

MHz.

The models are rectangular in shape with transverse cooling fins spaced evenly

along its entire length. Their short length makes it particularly useful in

locations. Also, the ten pounds total weight is a convenience in portable use.

Mounting holes are provided, see Chapter 3, Installation.

The RF connector, on the front face of the unit, is a Female N similar to UG-58A/

U, but is a “Quick-Change” design permitting rapid and easy interchange with

other AN type connectors.

Performance Characteristics and Capabilities

The loads will absorb and dissipate as heat up to 250W of RF power in

continuous duty. It can handle up to 20 percent overload for a maximum of ten

minutes overload without damage, provided a half-hour interval is maintained

for cooling between power applications. The design of the resistor and its

impedance matching shell keeps the VSWR below 1.1 to 1.0 from DC to 1000

MHz, 1.2 to 1.0 from 1000 to 1800 MHz and 1.3 to 1.0 from 1800 to 2500 MHz.

With its .QC. type of connector Model 8141 can be adapted to coaxial cables

equipped with any of a variety of standard connectors.

Dimensions and Weight

Consult the Specification Sheet for the size and weight of each load.

Termaline® Coaxial Load Resistor

Power and Utility Requirements

Other than the RF power input the Models 8141 and 8141-010 has no need for

an external source of power or utility services.

Environmental Requirements

The loads should be operated in as clean and vibration free an environment as

possible. The ambient temperature range should remain within -40°C to +45°C

(-40°F to +113°F) for proper operation.

Items Supplied

The models are a self-contained unit, there are no additional parts other than

this instruction book supplied. The load is prefilled at the factory with the

proper amount of coolant.

Items Required

No additional items are required other than a coaxial cable for connecting the

RF source to the load. The load is furnished with a Female N type connector. The

cable should be equipped with a Male N type plug. If the cable has any other

type of standard connector, then the load should be ordered with the

appropriate type of mating connector.

Tools and Test Equipment

Only a screwdriver is needed for disassembling for service. An ohmmeter or

resistance bridge with an accuracy of one percent or better at 50 ohms, is useful

for checking resistor condition.

Andere Handbücher für TERMLINE 8141

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