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Summary of Contents for BIRD Termaline Series
- Page 1 Termaline Load Resistor ® SERIES 8720 Operation Manual ©Copyright 2017 by Bird Technologies Inc. Instruction Book P/N 920-8720 Rev. B Termaline are Registered Trademarks of Bird Electronic Corporation...
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Page 2: Safety Precautions
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. -
Page 3: Warning Statements
Safety Precautions 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. The caution symbol appears on the equipment indicating there is important information in the instruction manual regarding that particular area. -
Page 4: Caution Statements
Termaline® Load Resistor Caution Statements The following equipment cautions appear in the text and are repeated here for emphasis. CAUTION Never reverse the cooling water connections. It is very important for the safety of the load resistor to observe proper flow direction. Also, when the load is first installed or is reconnected, run the water for approximately a minute to fill the system and remove all bubbles before turning on the RF power. -
Page 5: Safety Statements
Safety Precautions Safety Statements USAGE ANY USE OF THIS INSTRUMENT IN A MANNER NOT SPECIFIED BY THE MANUFACTURER MAY IMPAIR THE INSTRUMENT’S SAFETY PROTECTION. 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. - Page 6 Termaline® Load Resistor 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 SERVICIO LAS INSTRUCCIONES DE SERVICIO SON PARA USO EXCLUSIVO DEL PERSONAL DE SERVICIO CAPACITADO.
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Page 7: About This Manual
About This Manual About This Manual This manual covers the operating and maintenance instructions for the following models: 8720 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. -
Page 8: Table Of Contents
Table of Contents Safety Precautions ..............i Safety Symbols . -
Page 9: Chapter 1 Introduction
1.25 to 1.0 from 900 to 2000 MHz. Power input is through a Bird 50 ohm 1-5/8 inch EIA flanged connector. The RF power is converted to heat in the load resistor, and directly dissipated by means of the water cooling system. Water flow through the inside of the resistor directly absorbs the dissipated power of the resistive film. -
Page 10: Environmental Requirements
Termaline® Load Resistor Environmental Requirements The load should be operated in a dust and vibration free environment. The ambient temperature range should remain between +5C and +80C (+41F and +176F) for proper operation. However, this is not critical for cooling. Items Furnished The Model 8720 is equipped with a 1-5/8 inch EIA swivel flanged RF connector and 1/4 inch female pipe threaded nuts for the water supply lines. -
Page 11: Chapter 2 Installation
Chapter 2 Installation General The Model 8720 Termaline Load Resistor unit may be installed in any position or attitude required. Its relatively small size permits mounting in a very limited space since cooling is by water flow rather than air convection. No clearance for airflow is needed. -
Page 12: Chapter 3 Theory Of Operation
This simplified system allows use of the load in more varied environments and attachment at any attitude (see "Specifications" on page For the direct reading of power measurements up to 5 kW, these loads may be used in conjunction with any Bird Series 4700 Thruline Wattmeter. -
Page 13: Chapter 4 Operating Instructions
Chapter 4 Operating Instructions Use and Function of Controls The load, being a passive device, has no indicators or operating controls. Initial Adjustments No initial adjustments are required other than to connect the load to the RF source by means of a coaxial line with a suitable coupling. -
Page 14: Chapter 5 Maintenance
Chapter 5 Maintenance Troubleshooting The table below contains troubleshooting information for problems which can occur during normal operation. This manual cannot list all malfunctions that may occur, or their corrective actions. If a problem is not listed or is not corrected by the listed actions, notify a qualified service center. -
Page 15: Customer Service
Any maintenance or service procedure beyond the scope of those in this chapter should be referred to a qualified service center. If the unit needs to be returned for any reason, request an Return Material Authorization (RMA) through the Bird Technologies website. All instruments returned must be shipped prepaid and to the attention of the RMA number. -
Page 16: Disassembly
Other than disconnecting the Model 8720 from the coaxial transmission line and the water lines, no special disassembly procedures are necessary. (See "Installation" on page 3). Repairs must be performed by Bird, see "Customer Service" on page Preparation for Shipment Disconnect the Model 8720 from both the RF coaxial line, with the RF power shut off, and the water lines. -
Page 17: Chapter 6 Specifications
Chapter 6 Specifications DC– 2000 MHz Frequency Range 5 kW continuous duty Power Rating 50 ohms nominal Impedance VSWR DC to 500 MHz 1.10 max 500 to 900 MHz 1.15 max 900 to 2000 MHz 1.25 max 1-5/8 inch EIA swivel flange Connector Force liquid flow, Cooling Method... -
Page 18: Limited Warranty
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 specifica- tions, 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;...
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