HERE - Sphere Research Corporation
Contents
1. RF signal within their rating Series 8000 dry loads can absorb their individual maximum rated RF power levels continuously and dissipate them harmlessly as heat over their entire frequency range Be cause they are dry they are attitude insensitive and can therefore with some restrictions be used in any position Consult the Specification Sheet Page 3 for a listing of their individual power ratings frequency ranges and VSWR val ues Consult the Specifications on Page 3 for the size and weight of each load Bird Model 8000 Series Termaline Coaxial Load Resistor Power and Utility Requirements Environmental Requirements Items Furnished Items Required Tools and Test Equipment These loads are passive devices that are self contained and do not require any external source of power or utility to function other than the RF input power These loads should be operated in a dust and vibration free environment The ambient temperature range should re main between 40 C and 45 C 40 F and 118 F for proper operation Allow at least six inches of clearance around the units to permit an unimpeded access of convec tion air currents for adequate heat dissipation Series 8000 Loads are normally equipped with a Quick Change QC connector for convenient and easy inter change with other AN type QC connectors Model 8431 has a Small Quick Change SQC connector which is not inter changeable with QC2. from this value Disassembly Except for the QC connector SQC on Model 8481 there is no disassembly possible with these loads To change the connector use the following procedure The connector is a QC design which permits easy inter change with the use of only a screwdriver This process does not interfere with the essential coaxial continuity of the load resistor RF input For replacement proceed as follows a Remove the four 8 32 x 5 16 inch pan head machine screws from the corners of the RF connector b Pull the connector straight out of its socket Maintenance RF Connector Customer Service Reassembly To install a new connector reverse the procedures in para graph RF Connector Disassembly Be sure that the project ing center pin on the connector is carefully engaged and properly seated with the mating socket of the load resistor input Repairs WARNING This product contains a resistor substrate made of beryllium oxide This is a potentially toxic ceramic and may be harmful to your 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 Due to the unitized nature of the construction these loads are not field repairable other than replacement of the QC connector Repairs beyond what is covered in this instruction book wil
3. these loads continuously above their maximum power rating Load failure will result 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 PROTECCION DE SEGURIDAD DEL INSTRUMENTO BENUTZUNG WIRD DAS GERAT AUF ANDERE WEISE VERWENDET ALS VOM HERSTELLER BESCHRIEBEN KANN DIE GERATESICHERHEIT BEEINTRACHTIGT WERDEN UTILISATION TOUTE UTILISATION DE CET INSTRUMENT QUI N EST PAS EXPLICITEMENT PR VUE PAR LE FABRI CANT PEUT ENDOMMAGER LE DISPOSITIF DE PRO TECTION DE L INSTRUMENT IMPIEGO QUALORA QUESTO STRUMENTO VENISSE UTILIZZATO IN MODO DIVERSO DA COME SPECIFICATO DAL PRODUTTORE LA PROZIONE DI SICUREZZA POTREBBE VENIRNE COMPROMESSA SERVICE SERVICING INSTRUCTIONS ARE FOR USE BY SER VICE TRAINED PERSONNEL ONLY TO AVOID DAN GEROUS ELECTRIC SHOCK DO NOT PERFORM ANY SERVICING UNLESS QUALIFIED TO DO SO SERVICIO LAS INSTRUCCIONES DE SERVICIO SON PARA USO EXCLUSIVO DEL PERSONAL DE SERVICIO CAPACITADO PARA EVITAR EL PELIGRO DE DESCARGAS EL CTRICAS NO REALICE NING N SERVICIO A MENOS QUE EST CAPACITADO PARA HACERIO WARTUNG ANWEISUNGEN FUR DIE WARTUNG DES GERATES GELTEN NUR FUR GESCHULTES FACHPERSONAL ZUR VERMEIDUNG GEFAHRLICHE ELEKTRISCHE SCHOCKS SIND WARTUNGSARBEITEN AUSSCHLIEBLICH VON QUALIFIZIE
4. with preventative maintenance found in Chapter 5 Maintenance If a failure should occur the troubleshooting sec tion will aid in isolating and repairing the failure Parts For location of major assemblies or parts refer to the part lists in Chapter 5 Changes To This Manual We have made every effort to ensure this manual is accurate at the time of publication If you should discover any errors or if you have suggestions for improving this manual please send your comments to our factory This man ual may be periodically updated when inquiring about updates to this man ual refer to the part number and revision level on the title page Table Of Contents Safety Precautions Warning Statements Caution Statements Safety Statements About This Manual Introduction Purpose and Function Performance Characteristics and Capabilities Dimensions and Weight Power and Utility Requirements Environmental Requirements Items Furnished Items Required Tools and Test Equipment Specifications Theory of Operation General Installation General Mounting Location Operating Instructions Use and Function of Controls Initial Adjustments il 111 111 vi Bird Model 8000 Series Coaxial Load Resistor Start Up Normal Operation Operation Under Emergency Adverse or Abnormal Conditions Shutdown Emergency Shutdown Maintenance Cleaning Outside Surface Inspection Preventive
5. 031 4240 025 7 8 ElA Air Line LT Female LT Male C Female C Male UHF Female UHF Male 4240 002 Model 8431 uses SQC small connectors only 14 N Female M Male UHF Female UHF Male C Female 4100 014 4100 015 4100 017 4100 021 4100 045 4240 018 4240 012 4240 100 4240 110 4240 050 4240 179 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 spec ified from date of shipment and to conform to applicable specifications draw ings 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 re pairs 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 transporta tion 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 r
6. INSTRUCTION BOOK OPERATING INSTRUCTIONS TERMALINE COAXIAL LOAD RESISTOR SERIES 8000 MAGA Electronic Corporation Cleveland Solon Ohio USA O Copyright 1997 by Bird Electronic Corporation Instruction Book Part Number 920 80005 Rev A Termaline and Thruline are Registered Trademarks 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 Keep Away From Live Circuits Operating personnel must at all times observe normal safety regulations Do not replace components or make adjustments inside equipment with the high voltage supply turned on To avoid casualties always remove power Do Not Service or Adjust Alone Under no circumstances should any person reach into an enclosure for the purpose of service or adjustment of equipment except in the presence of some one who is capable of rendering aid Safety Earth Ground An uninteruuptible earth safety ground must be supplied from the main power source to test instruments Grounding one conductor of a two conduc tor power cable is not sufficient protection Serious injury or death can occur if this grounding is not properly supplied Shock Hazard Do not attempt to disconnect an RF transmission line while RF is present Radiated RF power is a potential health hazard Resuscitation Personnel
7. Inspection With the rugged and simple construction of the loads peri odic inspection will be necessary at only about six month in tervals Inspection should include the items listed below a Cleanliness Keep the housing and connector free of grime 11 Bird Model 8000 Series Termaline Coaxial Load Resistor DC Resistance RF Connector 12 b Inspect the load for completeness and general condition of the equipment Troubleshooting Chart lists the com monly encountered problems their possible causes and remedies Use this chart as a guide when analyzing symptoms Preventive Maintenance Due to the basic simplicity of construction the major re quirement for preventive maintenance is to keep the equip ment clean particularly the radiator fins It is important to maintain the heat transfer efficiency of the cooling fins RF Assembly Test Check the condition of these load resistors by accurate mea surement of the dc resistance between the inner and outer conductors of the RF input connector Use a resistance bridge or ohmmeter with an accuracy of one percent or better at 50 ohms for this purpose The measured resistance should be a nominal 50 ohms For greater accuracy the re sistance of the load should be carefully checked prior to use at ambient room temperature This resistance value should be recorded and used as a reference Subsequent resistance measurements should not deviate more than two percent
8. Maintenance RF Assembly Test DC Resistance Disassembly RF Connector Reassembly RF Connector Repairs Customer Service Storage Shipment RF Connector Replacement Parts List vii 10 11 11 11 11 12 12 12 12 12 13 13 13 13 14 14 14 14 Purpose and Function Performance Characteristics and Capabilities Dimensions and Weight Chapter 1 Introduction This instruction book is intended for use by operators of the Models 8080 8085 8163 8164 8166 8173 and 8431 Termaline Coaxial Load Resistor This chapter contains introductory information including product specifications items supplied and accessory items available The Series 8000 Termaline Load Resistors are portable general purpose 50 ohm coaxial transmission line termina tions They are self contained units liquid free and air cooled requiring no outside power source or additional equipment They provide accurate dependable and practi cally nonreflective terminations for testing and adjusting transmitters under nonradiating conditions These loads are useful for the following purposes As a substitute antenna For tuning RF transmitters under nonradiating conditions For making routine tests and adjustments As a substitute for any circuit loading ele ment To measure with a suitable indicating device the power output of any coaxially transmitted
9. RTEM SERVICEPERSONAL DURCHZUFUHREN ENTRENTIEN L EMPLOI DES INSTRUCTIONS D ENTRETIEN DOIT TRE R SERV AU PERSONNEL FORM AUX OPERATIONS D ENTRETIEN POUR PR VENIR UN CHOC ELECTRIQUE DANGEREUX NE PAS EFFECTUER D ENTRETIEN SI LON PAS ETE QUALIFIE 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 About This Manual This instruction book covers the models 8080 8085 8168 8164 8166 8173 8431 Termaline Coaxial Load Resistor This instruction book is arranged so that essential information on safety is contained in the front of the book Reading the Safety Precautions Section be fore operating the equipment is strongly advised The remainder of this Instruction Book is divided into Chapters and Sections At the beginning of each chapter a general overview will be given describing the contents of that chapter Operation First time operators should read Chapter 1 Introduction Chapter 2 Theory of Operation and Chapter 3 Installation to get an overview of equipment capabilities and how to install it An experienced operator can refer to Chap ter 4 Operating Instructions All instructions necessary to operate the equipment are contained in this section Maintenance All personnel should be familiar
10. ctronic Corporation 30303 Aurora Road Cleveland Ohio 44139 2794 Product Termaline RF Coaxial Load Resistors Models 8065 8431 8085 8166 8431 020 8085A020 8173 8431 030 8173 030 8164 The undersigned hereby declares on behalf of Bird Electronic Corporation of Cleveland Ohio that the above referenced product to which this declaration relates is in conformity with the provisions of the following standards 1 European Safety Standard EN 61010 1 1993 Safety Group II This standard is in accordance with Council Directive 73 23 EEC and 93 68 EEC The technical documentation file required by this directive is maintained at the corporate headquarters of Bird Electronic Corporation 30303 Aurora Road Cleveland Ohio 5 Ken DeVore QA Metrology Manager Bird Electronic Corporation 16
11. eimbursement 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 writ ing 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 alter ations 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 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 manufac turer 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 IN CLUDING WARRANTIES OF MERCHANTABILITY AND FITNESS AND NO PERSON IS AUTHORIZED TO ASSUME FOR SELLER ANY OBLIGA TION OR LIABILITY NOT STRICTLY IN ACCORDANCE WITH THE FOREGOING 15 DECLARATION OF CONFORMITY Manufacturer Bird Ele
12. l require return of the equipment to Bird Electronic Corpora tion for service Please consult the factory Any maintenance or service procedure beyond scope of those provided in this section should be referred to a qualified ser vice center Bird Electronic Corporation maintains complete repair and calibration facilities at the following addresses Service Group U S A Sales and Manufacturing Bird Electronic Corporation 30303 Aurora Road Cleveland Solon Ohio 44139 2794 Phone 440 248 1200 Fax 440 248 5426 13 Bird Model 8000 Series Termaline Coaxial Load Resistor Storage Shipment N Female N Male HN Female HN Male LC Female LC Male Sales Offices For the location of the sales office nearest you give us a call or visit our Web site at http www bird electronic com No special preparations for storage are necessary other than to cover the equipment to keep out dust and dirt Store these units in a dry and dust free environment where the ambient temperature will remain within the 40 C to 45 C 40 F to 113 F working range of the loads RF Connector Wrap the RF connector with padding and tape securely in place Pack and brace the load in a suitable shipping con tainer a corrugated paper box should suffice Replacement Parts List Models 8080 8085 8164 8166 and 8173 use QC connec tors only Available QC Type Connectors 4240 062 4240 063 4240 268 4240 278 4240
13. no operating con trols to be turned off Their source of RF power must be turned off instead Bird Model 8000 Series Termaline Coaxial Load Resistor Emergency Shutdown 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 Turn off the RF power at its source 10 Chapter 5 Maintenance Troubleshooting For corrections requiring repair or replacement of compo nents refer to the appropriate section for your specific model Table 1 PROBLEM POSSIBLE CAUSE REMEDY Excessive over Transmitter power Reduce transmitter heating too high power Faulty RF resistor Return to factory for repair High or low dc re Faulty RF input sistance values QC connector nector screwdriver for repair Cleaning Outside The outside surface of these loads should be wiped free of Surface dust and dirt when necessary The principle maintenance required by the operator will be to periodically wipe the ac cumulated dust and lint off of the radiator fins Excessive collection of dust and lint on the cooling fins will interfere with efficient dissipation of heat If the Teflon insulator or metallic contact surfaces of the connector should become dirty or grimy wipe them off with a soft cloth Use a contact cleaner that is self drying and leaves no residue to clean the hard to reach internal portions
14. s 4 1 4 Figure 1 Model 8085 Outline Drawing 108mm 2 S 2 2 a Male N QC Connector 1 3 4 44mm Square A NS 1 8 Ol 57 64 23mm General Chapter 2 Theory of Operation The resistive element in these dry Termaline Loads is indi vidually selected for its accuracy and enclosed in a heat sink housing The housing is specially contoured inside to provide the load with its unusually low reflection character istics throughout its entire frequency range The housings for the 25 50 100 and 150 Watt models are deeply slotted and painted black with a lusterless finish to improve their heat dissipation Models 8173 and 8481 are fabricated with sheet metal fins to more efficiently meet their higher heat dissipation requirements Bird Model 8000 Series Coaxial Load Resistor General Mounting Location Chapter 3 Installation These loads may be used for portable operation or fixed in stallation The Models 8080 8085 and 8164 are in general light enough to be attached directly to the mating RF con nector of another device such as a Bird Thruline Wattmeter or simply set on the workbench like the Models 8166 8173 and 8481 Attach the load resistor as close as possible to the transmitter s output and use only suitable connectors Try to connect direct to minimize cable leng
15. th and avoid the use of adapters as much as possible The Model 8166 because of its weight has a provision for special mounting The hous ing has four tapped mounting holes on one side They are 1 2 inch 13 mm deep for 8 32 screws and arranged in a 6 3 8 x 1 3 4 inch 162 x 44 4 mm rectangle The Model 8431 mounted horizontally will dissipate up to 500 Watts and mounted vertically up to 600 Watts Model 8173 should be operated only in a horizontal position The Model 8163 Termaline Load Resistor is identical to the Model 8164 load electrically and physically except for mounting holes The Model 8163 load resistor has four mounting holes with Heli Coil stainless steel inserts to ac commodate 8 32 mounting screws These mounting holes are located two on the lower front face of the unit and two on the lower rear face Allow at least six inches of clearance around these units to permit an unimpeded access of natural convection of air for adequate heat dissipation Place the loads to permit the shortest possible cable length between the unit and the transmitting equipment Bird Model 8000 Series Coaxial Load Resistor Use and Function of Controls Initial Adjustments Start Up Normal Operation Operation Under Emergency Adverse or Abnormal Conditions Shutdown Chapter 4 Operating Instructions These loads being passive devices have no indicators or op erating controls No initial adjus
16. tments are required other than to connect the load to the RF source by means of a coaxial cable equipped with a suitable matching connector plug Connect these loads to the transmitting equipment under test with 50 ohm coaxial cable where necessary RG 8A U RG 9 U RG 213 U or equal equipped with a suitable plug which mates with the RF input connector of the load After the load has been connected to the transmitter proceed ac cording to the transmitter manufacturer s instructions When reconnecting the antenna it may be necessary to slightly readjust the transmitter due to possible differences in VSWR between the load and the antenna system CAUTION Do not operate these loads continuously above their maximum power rating Load failure will result Having no indicators or operating controls these loads re quire no special operating procedures or surveillance when the stated performance limits are not exceeded These units will sustain an input moderately greater than their maximum rated power for short periods of time Such loading must be spaced at reasonable intervals to allow suf ficient time for cooling to a safe temperature Apply the ex cessive power for a few minutes at most and allow at least a half hour for adequate cooling before reapplying power Be cause of the excessive heat generated by overloading touch the load with caution to avoid painful burns These loads being passive devices have
17. types Consult the Specification Sheet Page 3 for the connector type normally supplied with each load The only other item required is a mating connector on the coaxial transmission line to which the load will be con nected Only a screwdriver will be necessary for changing the QC connectors None of these loads are subject to any further disassembly An ohmmeter or resistance bridge with an ac curacy of one percent or better at 50 ohms is useful for checking the resistance value of the RF section assembly Introduction Specifications Impedance 50 ohms nominal Ambient Temperature 40 C to 45 C 40 F to 113 F Cooling Method Convection air currents Operating Position Any tt MAX VSWR MAX WT OZ MODEL CONNS WATTS 8080 1 1 1000 N Mt 25 dc 3500 5 9 64 L x 1 1 4 sq 9 1 25 1000 3500 130 6 x 31 8 mm 2250 8085 1 1 4 1000 3500 5 9 64 L 1 3 4 sq 4250 8163 Similar to Model 8164 see Installation Chapter 2 8164 1 1 4 1000 100 4 2400 6 63 64 L x 1 2 1000 2500 8166 1 1 1000 50 4 2500 7 31 64 L 4 sq 1 2 1000 2500 190 101 6 mm 00 Ft 3 4 2000 9 L 9 9 16 H x 5 1 8 W 228 6 x 242 9 x 130 2 mm F 8173 1 1 1000 1 25 1000 2000 8431 1 1 1000 500 600 dc 2500 13 7 64 L 7 1 8 H 9 1 4 W 333 181 235 mm QC Connector SQC Connector tt See Text Bird Model 8000 Series Termaline Coaxial Load Resistor L
18. working with or near high voltages should be familiar with modern methods of resuscitation Safety Symbols WARNING Warning notes call attention to a procedure which if not correctly performed could result in personal injury CAUTION Caution notes call attention to a procedure which if not correctly performed could result in damage to the instrument This symbol appears on the equipment indicating there is important informa tion in the instruction manual regarding that particular area I NOTE Calls attention to supplemental information WARNING STATEMENTS The following safety warnings appear in the text where there is danger to op erating and maintenance personnel and are repeated here for emphasis 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 a resistor substrate made of beryllium oxide This is a potentially toxic ceramic and may be harmful to your 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 CAUTION STATEMENT The following equipment caution appears in the text whenever the equipment is in danger of damage and is repeated here for emphasis CAUTION Do not operate
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