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BIRD Termaline 8890SC Series Operation Manual

Semiconductor load resistor
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®
Termaline
Semiconductor
Load Resistor
Series 8890SC
Operation Manual
This unit requires the supplied vent plug be installed prior to use.
Operating the unit without the vent plug installed WILL result in equipment damage and may
cause personal injury.
© Copyright 2023 by Bird Technologies, Inc.
Instruction Book Part Number 920-8890-SEMICON Rev. B
®
®
Termaline
and Tenuline
are Registered Trademarks
of Bird Electronic Corporation

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Summary of Contents for BIRD Termaline 8890SC Series

  • Page 1 This unit requires the supplied vent plug be installed prior to use. Operating the unit without the vent plug installed WILL result in equipment damage and may cause personal injury. © Copyright 2023 by Bird Technologies, Inc. Instruction Book Part Number 920-8890-SEMICON Rev. B ®...
  • Page 3 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. Keep Away From Live Circuits Operating Personnel must at all times observe general safety precautions.

  • Page 4: Safety Symbols

    Termaline® Semiconductor Load Resistor Safety Symbols Warnings call attention to a procedure, which if not correctly performed, could result in personal injury. Cautions 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 5: Caution Statements

    Caution Statements The following equipment cautions appear in the text and are repeated here for emphasis. The Bird 8890-300SC13 is not designed for use with a blower. Do not install a blower on the unit. Doing so will void the warranty.

  • Page 6: Safety Statements

    Termaline® Semiconductor Load Resistor 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 7 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 SERVICIO LAS INSTRUCCIONES DE SERVICIO SON PARA USO EXCLUSIVO DEL PERSONAL DE SERVICIO CAPACITADO.
  • Page 8 Termaline® Semiconductor Load Resistor CONNECT INTERLOCK TO TRANSMITTER BEFORE OPERATING. BRANCHER LE VERROUILLAGE À L'ÉMETTEUR AVANT EMPLOI. CONECTE EL INTERBLOQUEO AL TRANSMISOR ANTES DE LA OPERACION. VOR INBETRIEBNAHME VERRIEGELUNG AM SENDER ANSCHLIESSEN. PRIMA DI METTERE IN FUNZIONE L'APPARECCHIO, COLLEGARE IL DISPOSITIVO DI BLOCCO AL TRASMETTITORE.

  • Page 9: About This Manual

    Safety Precautions About This Manual This manual covers the operating and maintenance instructions for the following models: 8890-300SC13 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 10: Table Of Contents

    Table of Contents Safety Precautions ..............i Safety Symbols .
  • Page 11 Table of Contents Storing the Load Resistor ..............14 Shipping the Load Resistor .

  • Page 12: Chapter 1 Introduction

    The load’s simple and rugged design minimizes maintenance requirements. The Bird 8890-300SC13 is not designed for use with a blower. Do not install a blower on the unit. Doing so will void the warranty.

  • Page 13: Chapter 2 Theory Of Operation

    Theory of Operation Load Resistor Bird 8890 loads consist of a thin-film-on-ceramic resistor immersed in a dielectric coolant. The resistor, individually selected for its accuracy, is enclosed in a special housing. When surrounded by the coolant, this produces a uniform, practically reflectionless line termination over the specified frequencies.

  • Page 14: Chapter 3 Installation

    This chapter provides information for on-site requirements, unpacking, inspection, and preparing the load for use. The Bird 8890-300SC13 is not designed for use with a blower. Do not install a blower on the unit. Doing so will void the warranty.

  • Page 15: Mounting The Load Resistor

    Installation Mounting the Load Resistor This load is designed for operation in a horizontal position only, with the mounting brackets down. Operation in any other orientation will cause insufficient cooling of the unit leading to premature failure. These loads are equipped for either portable use or fixed installation. The mounting brackets on the front and rear faces have four mounting slots arranged in a 4 "...

  • Page 16: Thermoswitch

    Termaline® Semiconductor Load Resistor Thermoswitch As an option, the load may be provided with a thermoswitch assembly, P/N 8890-008. The thermoswitch is used as an interlock switch to disable transmitter power if the coolant temperature exceeds a preset temperature, thus preventing possible damage from accidental power overloading from the transmitter or equipment malfunction.

  • Page 17: Thermoswitch Wiring Installation

    Installation Thermoswitch Wiring Installation 1. Unscrew the large knurled ring-nut (A) at the lower end of the coupling jack assembly. 2. Pull the large knurled ring-nut (A) off the thermoswitch jack (B). See Figure 2 on page 6 3. Unscrew the small knurled cover fitting (C) from the base plug (D) of the connector to release the base. 4.

  • Page 18: Connecting The Rf Power

    Termaline® Semiconductor Load Resistor Connecting the RF Power Before first using the load, perform the following steps. 1. Wipe all connectors and insulator surfaces on the transmission line face with a clean soft cloth. 2. Check the RF input connector for signs of wear, damage, or dirt. 3.

  • Page 19: Chapter 4 Operating Instructions

    If installed, connect optional interlock before applying RF power. Normal Operation Bird 8890 series loads have no indicators or operating controls. They require no special operating procedures or surveillance when their performance limits are not exceeded. Follow the instructions for the specific generator equipment.

  • Page 20: Chapter 5 Maintenance

    Chapter 5 Maintenance This chapter covers cleaning, inspection, trouble-shooting, and specifications for the Bird 8890 series loads. 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.

  • Page 21: Routine Maintenance

    Maintenance Routine Maintenance shows the location of components which may be referred to in this section. Figure 3 Figure 3 Maintenance and Repair Locations Inspect the Load  Inspect the unit every six months. Check for coolant leakage around the clamping band. b.

  • Page 22: Rf Assembly Resistance Test

    1. Remove the load resistor (See "Repairing the Load Resistor" on page 13 Use only Bird coolant, P/N 5-1070, to prevent damage to the load.  The coolant should be clear, with a faint yellow tinge, and have a slightly sweet smell.
  • Page 23 Maintenance Figure 4 Measuring DC Resistance...

  • Page 24: Repair

    Disconnect the unit from all power sources before servicing. The unit may be energized from multiple sources. The potential for electric shock exists. The Bird 8890-300SC13 is not designed for use with a blower. Do not install a blower on the unit. Doing so will void the warranty.

  • Page 25: Storage And Shipment

    Storage and Shipment Storing the Load Resistor 1. Cover Bird 8860 Loads before storing to keep out dust and dirt. When storing the load it is not necessary to install the shipping plug. 2. Store in a dry, dust-free environment where the ambient temperature will remain between –40 and +45 °C (–40 to +113 °F).

  • Page 26: 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 27: Specifications

    Maintenance Specifications Frequency Range DC – 28 MHz Power Rating 2500 W continuous duty Impedance, Nominal 50 ohms VSWR 1.1 max < 0.1 dB, from 0 to 100% rated power VSWR Stability at stability frequency Stability Frequency 13.56 MHz ± 10 kHz Connectors “QC”...

  • Page 28: Available "Qc" Type Connectors

    Termaline® Semiconductor Load Resistor Available “QC” Type Connectors Connector Part Number 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. 4240-080 # 10-32 Nut LT-Female 4240-018 LT-Male 4240-012 N-Female 4240-062 N-Male 4240-063 SC-Female 4240-090...

  • Page 29: 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 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;...

This manual is also suitable for:

8890-300sc13

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