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BIRD 4480A Operation Manual
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BIRD 4480A Operation Manual

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Directional RF
Thruline Wattmeter
Model 4480A
Operation Manual
©Copyright 2024 by Bird Technologies, Inc.
Instruction Book Part Number 920-4480 Rev. A

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Summary of Contents for BIRD 4480A

  • Page 1 Directional RF Thruline Wattmeter Model 4480A Operation Manual ©Copyright 2024 by Bird Technologies, Inc. Instruction Book Part Number 920-4480 Rev. A...

  • Page 3: Safety Precautions

    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.

  • Page 4: Safety Symbols

    Directional RF Thruline Wattmeter, Model 4480A 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.

  • Page 5: Caution Statements

    Measurement accuracy relies on the input frequency being within the selected frequency band. The Model 4480A cannot determine if the signal is in the correct band or notify the user if an incorrect band is selected.

  • Page 6: Safety Statements

    Directional RF Thruline Wattmeter, Model 4480A 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.
  • 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 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...

  • Page 8: About This Manual

    Chapter Layout Introduction — Provides a brief description of the features of the Bird Model 4480A Wattmeter, a theory of operation, and a description of the controls and indicators. Installation — Describes how to make RF connections to the Model 4480A and battery installation.

  • Page 9: Table Of Contents

    Model 4480A Controls ........
  • Page 10 Directional RF Thruline Wattmeter, Model 4480A Chapter 4 Maintenance ........9 Calibration .

  • Page 11: Chapter 1 Introduction

    When used in a 50 ohm application with N type connectors, the Model 4480A has an insertion VSWR of less than 1.05 for frequencies up to 1000 MHz. The meter has two RF ranges, a 2 to 30 MHz range and a 25 to 1000 MHz range.

  • Page 12: Theory Of Operation

    The characteristic impedance of these lines is a pure resistance, usually 50 ohms for useful lines. The Model 4480A samples the forward and reflected waves within the line section, measures their power, and display’s the measurements on an LCD screen.
  • Page 13 Introduction Figure 2 Model 4480A Simplified Diagram...

  • Page 14: Model 4480A Controls

    Power button, turns on and off the Model 4480A Power Meter. USB Port. The USB port is used for firmware upgrades. Note: When powered USB cable is connected to the Model 4480A, the power meter will automatically power on. The Power button will NOT turn off the unit while a powered USB cable is connected.

  • Page 15: Model 4480A Display

    Introduction Model 4480A Display Figure 4 Model 4480A Display Description Item Name Description Indicates the frequency band the unit is setup to Selected Band measure. The Frequency Band pushbutton is used to control which band is selected. Battery Gauge Indicates the current charge of the batteries.

  • Page 16: Chapter 2 Installation

    Battery Installation Charging The AC to DC power supply supplied with the Model 4480A is used to charge the batteries. After installing the batteries it is a good idea to fully charge the batteries to ensure they are at full capacity.

  • Page 17: Transmission Line Connections

    Figure 6 RF Connections Connectors The Model 4480A Wattmeter is normally supplied with two Female N type connectors which are of the Bird Quick-Change “QC” design. Other “QC” connectors are available as listed in the "Replacement Parts List" on page 13...

  • Page 18: Chapter 3 Operation

    Be sure transmission line is terminated into a load or antenna. 1. Connect RF Power Source and Load to the Model 4480A wattmeter. See "Transmission Line Connections" on page 7 2. Press Power button on Model 4480A.

  • Page 19: Chapter 4 Maintenance

    Chapter 4 Maintenance The Series Model 4480A Thruline Wattmeter is of very rugged construction and requires little care and maintenance. Maintenance of the wattmeter is normally limited to cleaning and calibration. Protect the RF connectors on the line section against the entry of dust and dirt by keeping them connected to the transmission line or by covering them with dust covers when the unit is disconnected from the transmission line.

  • Page 20: Battery Replacement

    Directional RF Thruline Wattmeter, Model 4480A Battery Replacement Only install rechargeable NiMH AA batteries. Using non-rechargeable batteries may cause permanent damage when charger is connected. The battery compartment is located on the back of the unit. A cover protects the batteries.

  • Page 21: Troubleshooting

    Maintenance Troubleshooting The Model 4480A Thruline Wattmeter is designed for independent, long term, trouble free operation. In case of malfunction or for replacement of a major component —particularly if it is still under warranty—return the unit to the factory. Do not tamper with the calibration setting or do other unauthorized maintenance work during the first year, or you may void the warranty.

  • Page 22: Customer Service

    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 23: Replacement Parts List

    Maintenance Replacement Parts List Description Part Number 4480A809 Strap (Included in housing assembly) 5B2230 Battery AA NiMH 4480A152 AC to DC Power Supply (charger) 4421-055 Power Cord "QC Type “QC” Connectors (Female “N” normally supplied) Connectors" on this page. QC Type Connectors Connector Type Female PN Male PN...

  • Page 24: Specifications

    Directional RF Thruline Wattmeter, Model 4480A Specifications Frequency Range Low Band 2 MHz-30 MHz High Band 25 MHz-1000 MHz Power Frequency range [2MHz - 30MHz] 10 W to 10 kW continuous, 20% overrange Frequency range [25 MHz -1000 MHz] 1 W to 1 kW, continuous, 20% overrange...

  • Page 25: 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;...