BIRD Termaline 8890 Series Operation Manual
Load resistor
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- Instruction book (36 pages) ,
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Summary of Contents for BIRD Termaline 8890 Series
- Page 1 ® Termaline Load Resistor Series 8890 Operation Manual ©Copyright 2016 by Bird Technologies, Inc. Instruction Book Part Number 920-8890S Rev. D ® ® Termaline and Tenuline 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: Safety Symbols
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. Note: Calls attention to supplemental information. -
Page 4: Warning Statements
Termaline® Load Resistor 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 The vent plug must be used at all times when the unit is operating or cooling. Failure to do so could result in an explosion or severe burns. -
Page 5: Caution Statements
Maximum power is 1,250 W when the blower is not running. If the indicator light should turn off, immediately reduce RF power to less than 1,250 W. On page 10. CAUTION Use only Bird coolant, P/N 5-1070, to prevent damage to the load. On page 14. -
Page 6: Safety Statements
Termaline® 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® 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.
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Page 9: About This Manual
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 Bird Termaline, Semiconductor, RF Load Resistor lists equipment supplied and optional equipment, and provides power-up instructions. Theory of Operation —... -
Page 10: Table Of Contents
Table of Contents Safety Precautions ..............i Safety Symbols . - Page 11 Table of Contents Cleaning the Load ................12 Cleaning the Load Resistor .
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Page 12: Chapter 1 Introduction
Introduction The Bird 8890 series loads are portable, 50 ohm, coaxial RF transmission line terminations, designed for frequency ranges of DC – 2.4 GHz. The 8890 series D loads are designed for use in the UHF (470 – 860 MHz) band, otherwise they are identical to the standard series. - Page 13 Introduction Figure 1 Bird 8890 Series Outline Drawing - No Blower Figure 2 Outline Drawing With Blower...
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Page 14: Chapter 2 Theory Of Operation
Theory of Operation Load Resistor Bird 8890 series 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 15: Chapter 3 Installation
This load is designed for operation in a horizontal position only, with the vent plug up. Do not use in any other manner. Bird 8890 series Loads are equipped for either portable use or fixed installation. The mounting brackets on the front ... -
Page 16: Installing The Thermoswitch
Termaline® Load Resistor Installing the Thermoswitch Bird 8890 series Loads can be equipped with an optional interlock thermoswitch, P/N 8890-008. It is normally closed, opening at 236 °C (457 °F), with a rating of 10A at 120VAC and 5A at 230VAC. -
Page 17: Installing The Interlock Connection
Installation Installing the Interlock Connection CAUTION If installed, connect optional interlock before applying RF power. 1. Unscrew the large knurled ring-nut (A) at the lower end of the coupling jack assembly. 2. Pull the large knurled nut off the thermoswitch jack (B). 3. -
Page 18: Connecting Rf Power
Termaline® Load Resistor Connecting RF Power Note: After installing the load, the RF transmission line can be attached using standard coaxial line coupling kits. 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. Using a “QC”... -
Page 19: Using An Ac Power Hookup
Installation Figure 5 Unflanged Coupling Using an AC Power Hookup WARNING Turn off AC power and RF power when attaching the power cable. CAUTION Check the local electrical code for proper AC hookup prior to operation of the unit. Make sure the neutral or return hookup is only used for that purpose. AC power is only required if the blower assembly is installed. -
Page 20: Chapter 4 Operating Instructions, No Blower
Operating Instructions, No Blower Normal Operation Bird 8890 series– 300 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 transmitter equipment. -
Page 21: Chapter 5 Operating Instructions, With Blower
RF power is being applied. Leaking RF energy is a potential health hazard. Blower Controls Bird 8890 series –310 and –320 Loads are equipped with a control switch and indicator light on the front of the blower assembly. The switch is labeled MANUAL/AUTOMATIC. -
Page 22: Chapter 6 Maintenance
Chapter 6 Maintenance This chapter covers cleaning, inspection, trouble-shooting, and specifications for the Bird 8890 series Loads. 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. -
Page 23: Maintenance
Maintenance Maintenance Cleaning the Load Cleaning the Load Resistor The outside surface of the instrument should be wiped free of dust and dirt when necessary. Clean the cooling fins. Note: Excessive dust on the cooling fins will interfere with heat dissipation. ... -
Page 24: Rf Assembly Resistance Test
Termaline® Load Resistor RF Assembly Resistance Test Note: These tests are by no means a necessity to the operation of the load but merely guidelines for the users information. Accurate measurement of the DC resistance between the inner and outer conductors of the RF input connector will provide a good check of the condition of the load resistor. -
Page 25: Repairing The Load
Replacing the RF Connector ONLY the Model 8890 has a special Bird “QC” connector which allows easy changing of the RF connector. This does not disturb the coolant seal or affect the electrical continuity of the load. To change the connector, proceed as follows: 1. -
Page 26: Replacing The Indicator Light
Termaline® Load Resistor 1. Press the locking tab on the fuse drawer. 2. Remove the drawer. 3. Replace the fuse. Note: See for fuse type and current rating. "Specifications" on page 18 4. Push the drawer into the AC module until it locks into place. Note: If the fans still do not run or if the fuse burns out again, return the blower assembly to the fac- tory. -
Page 27: Replacing The Fan
Maintenance Replacing the Fan WARNING Disconnect the unit from all power sources before servicing. The unit may be energized from multiple sources. The potential for electric shock exists. 1. Remove the four 8-32 pan head screws from the front and back of the base frame. 2. -
Page 28: Storage And Shipment
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 29: Specifications
Maintenance Specifications Frequency Range 8891D300, 8892D300, 8892D13-30, 8892D320 470 – 860 MHz All other models DC – 2.4 GHz Power Rating Peak Power for Pulse Width 2500 W continuous duty 1 μs 150 kW 10 μs 115 kW 100 μs 80 kW 1000 μs 54 kW... -
Page 30: Replacement Parts
Termaline® Load Resistor Finish Grey Powder Coat 1 Power rating with blower installed and operating: 5000 W Power rating with blower installed and NOT operating: 1250 W 2 Set the duty factor so that the average power rating of the load is not exceeded. 3 For models 8890-300, -315, and -320 VSWR Measured using a female N connector 4 Derate RF power by 2.5% for every 305m (1,000 ft.) above 1,520m (5,000 ft.). -
Page 31: Available "Qc" Type Connectors
Maintenance 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.# 10-32 Nut 4240-080 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... -
Page 32: 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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