BIRD THRULINE 43 Series Instruction Book
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BIRD THRULINE 43 Series Instruction Book

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INSTRUCTION BOOK FOR
RF DIRECTIONAL
®
THRULINE
WATTMETER
MODEL 43
Also Covers Models
4305, 4330, 4431, 4521-27, and 43P
Electronic Corporation
Cleveland (Solon) Ohio USA
© Copyright 1998 by Bird Electronic Corporation
Instruction Book Part Number 920-43 Revision. C
Thruline® and Termaline® are registered trademarks of
Bird Electronic Corporation

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  • Page 1 MODEL 43 Also Covers Models 4305, 4330, 4431, 4521-27, and 43P Electronic Corporation Cleveland (Solon) Ohio USA © Copyright 1998 by Bird Electronic Corporation Instruction Book Part Number 920-43 Revision. C Thruline® and Termaline® are registered trademarks of Bird Electronic Corporation...

  • Page 3: Safety Precautions

    Safety Precautions Keep Away From Live Circuits Do Not Service Or Adjust Alone Safety Earth Ground Shock Hazard...

  • Page 4: Warning Statements

    Bird Model 43 Wattmeter Resuscitation Safety Symbols Warning Statements...

  • Page 5: Safety Statements

    Caution Statement Safety Statements...
  • Page 6 Bird Model 43 Wattmeter É Ú É...
  • Page 8 Bird Model 43 Wattmeter...

  • Page 9: About This Manual

    About This Manual 4305A 4331 4431 4521 4522 4523 4525 4526 4527 Operation Maintenance...
  • Page 10 Bird Model 43 Wattmeter Parts Changes To The Manual We have made every effort to ensure this manual is accurate. If you should discover any errors or if you have suggestions for improving this manual, please send your comments to our factory. This manual may be periodically updated.

  • Page 11: Table Of Contents

    Table of Contents Safety Precautions......Warning Statements..... . ii Caution Statement.
  • Page 12 Bird Model 43 Wattmeter Connections......19 Remote Installation..... . 20 Operating Instructions.
  • Page 13 Model 4305A Replacement Parts List... . 45 Model 4330 Thruline Wattmeter....45 Model 4330/31 Replacement Parts List... 46 Model 43P Peak Wattmeter.
  • Page 14 Bird Model 43 Wattmeter...

  • Page 15: Introduction

    Chapter 1 Introduction Purpose and Function Performance Characteristics and Capabilities...
  • Page 16 Bird Model 43 Wattmeter...
  • Page 17 Introduction Raised Stop Edge Figure 1 Stop Pin Stop Pin Stop Pin Figure 2 Stop pin and contact Contact...

  • Page 18: Specifications

    1.07 (when coupling is less than 30dB) Connectors RF Sampling (if applicable) Female BNC Primary Line Bird “QC” Female N normally supplied Power and Frequency Range Models: 43, 43P, 4521/22/23/25/26 100mW-10kW Frequency range from 0.45 to 2700 MHz (depending on element).
  • Page 19 Introduction ± 5% of full scale. Accuracy (All Models CW) ± 8% of full scale. (Model 43P, Peak Power) Dimensions, Nominal Models 43 3-5/8"L x 4"W x 6-7/8"H (92.1 x 101.6 x 174.6 mm) Model 4431 3-27/32"L x 4"W x 6-7/8"H (97.6 x 101.6 x 174.6 mm) Model 4305A 4-5/32"L x 3-27/32"W x 6-53/64"H...
  • Page 20 Bird Model 43 Wattmeter Model 43 Outline Drawing Socket for 6-7/8" (174.6mm) Extra Element Female "N" Q.C. Connectors (2) (Normally Supplied) 1-3/4" (44.5mm) 1-5/16" (33.3mm) 4" 3-3/8" (101.6mm) (85.7mm) 3-5/8" (92.1mm)

  • Page 21: Theory Of Operation

    Chapter 2 Theory of Operation Travelling Wave Viewpoint Coupling Circuit...
  • Page 22 Bird Model 43 Wattmeter Figure 3 Element RF Coaxial Line Schematic Diagram XMTR LOAD LOAD XMTR Diode Directional Coupling Meter Detector Element Connector Bypass DC Contact...

  • Page 23: Standing Wave Ratio Vs Reflected/Forward Power Ratio

    Theory of Operation Standing Wave Ratio vs Reflected/Forward Power Ratio Load Power...
  • Page 24 Bird Model 43 Wattmeter φ φ ρ φ and Its Significance φ − Where p VSWR φ − φ φ φ φ...
  • Page 25 Theory of Operation φ φ φ φ CAUTION When making low reflection readings using a more sensitive element, take care to insert the element so that it senses reflected power only. Do not rotate the element in the socket so that it is subjected to forward power.
  • Page 26 Bird Model 43 Wattmeter Figure 4 Percent Reflected Power VS. VSWR (1.0:1.3) REFELECTED POWER f=¾ x 100 =——————————— x 100 FORWARD POWER 1.05 1.10 1.15 1.25 1.30 1.40 1.20 VSWR—r...
  • Page 27 Theory of Operation Figure 5 Percent Reflected Power VS. VSWR (1.0:8.0) REFELECTED POWER f=¾ x 100 =——————————— x 100 FORWARD POWER VSWR—r...

  • Page 28: Measurement And Monitoring Of Transmitter Power

    Bird Model 43 Wattmeter φ = 0 00125 or close to 0 1% or to roughly p 1 06 Measurement And Monitoring of Transmitter Power Testing of Lines, Connectors, Filters, Etc. φ φ...
  • Page 29 Theory of Operation Attenuation By Open Or Short Circuit Method φ φ using the equation: N 10 log φ...

  • Page 30: Frequency Response

    Bird Model 43 Wattmeter Frequency Response...

  • Page 31: Impedance Mismatch

    Theory of Operation Figure 6 Representative Frequency Response 10 C Element 100 C Element 500 C Element 1000 Frequency In Megahertz Impedance Mismatch...
  • Page 32 Bird Model 43 Wattmeter...

  • Page 33: Installation

    Chapter 3 Installation Portability Connections WARNING Leaking RF energy is a potential health hazard. Never attempt to connect or disconnect equipment from the transmission line while RF power is being applied. Severe burns, electrical shock, or death can occur.

  • Page 34: Remote Installation

    Bird Model 43 Wattmeter Remote Installation...
  • Page 35 Installation...
  • Page 36 Bird Model 43 Wattmeter Figure 7 RF Line PLUG-IN ELEMENT 2-1/8" #10-32 x 9/32 DEEP TAP DETERMINES POWER & Section TWO HOLES FREQUENCY RANGE 1-1/2" 1-1/4" SQUARE 7/8" J-411 P-401 D-C CABLE, RG-58/U (W-403) ORIENT TO SUIT 17/64" 1-3/64" 2-5/16"...

  • Page 37: Operating Instructions

    Chapter 4 Operating Instructions Zero Adjust Figure 9 Zero Adjust Zero Adjust Screw WARNING When operating this equipment in conjunction with RF power of 200 watts or higher, the potential of the center conductor of the RF line section will be 100 volts or higher. Do not contact the center conductor.

  • Page 38: General

    Bird Model 43 Wattmeter General...

  • Page 39: Normal Operation

    Operating Instructions Figure To Load To Transmitter Direction of Element Forward Power Measurement To Load To Transmitter Reflected Power Measurement Normal Operation...
  • Page 40 Bird Model 43 Wattmeter...
  • Page 41 Operating Instructions Figure 11 VSWR Conversion Nomograph...
  • Page 42 Bird Model 43 Wattmeter Figure 12 VSWR Conversion Nomograph...
  • Page 43 Operating Instructions Figure 13 Cable Wavelength Matching Graph MEGAHERTZ (600) (700) (800) (900) (1000) (10) FREQUENCY (MEGAHERTZ)
  • Page 44 Bird Model 43 Wattmeter solid...

  • Page 45: Maintenance

    Chapter 5 Maintenance Troubleshooting...

  • Page 46: Cleaning

    Bird Model 43 Wattmeter Problem Possible Cause Corrective Action No meter indica- No RF power Check RF source tion “Arrow” on Plug-in Reposition element element pointing in wrong direction No pick-up from dc Adjust per the Contact contact finger Adjustment paragraph...

  • Page 47: Preventive Maintenance

    Maintenance Preventive Maintenance Line Section Care Contact Adjustment...

  • Page 48: Calibration Checks - Thruline Wattmeter Vs Termaline Wattmeters

    Bird Model 43 Wattmeter Calibration Checks - Thruline Wattmeter vs Termaline Wattmeters...

  • Page 49: Model 43 Replacement Parts List

    Maintenance Model 43 Replacement Parts List Item Qty. Description Part Number Housing Assembly 4210-018 Cover Assembly 4210-005-1 Line Section Assembly 4230-018 Carrying Strap 8580A003 Dust Plug, Aluminum 3610-031 DC connector Assembly 4230-010 Microammeter 2080-002 DC Connector 7500-076 Coaxial Cable Assembly 4220-097-1 Turnbutton 4300-015...
  • Page 50 Bird Model 43 Wattmeter *Available “QC” Type Connectors Connector Part Number Connector Part Number N-Female 4240-062 LT-Female 4240-018 N-Male 4240-063 LT-Male 4240-012 HN-Female 4240-268 C-Female 4240-100 HN-Male 4240-278 C-Male 4240-110 LC-Female 4240-031 UHF-Female 4240-050 LC-Male 4240-025 UHF-Male 4240-179 BNC-Female 4240-125...
  • Page 51 Maintenance Figure 14 Exploded View Of The Model 43...

  • Page 52: Model 4431 Thruline Wattmeter

    Bird Model 43 Wattmeter Model 4431 Thruline Wattmeter Theory of Operation...
  • Page 53 Maintenance Table 1 Model 4431 Coupling Data Maximum Counterclockwise Frequency (MHz) Sensitivity 4 Full Turns 7 Full Turns (Fully Clockwise) From Max. From Max. Position Position (Approximate dB (Approximate dB attenuation) attenuation) 29.5 28.5 35.5 1000...

  • Page 54: Operation

    Bird Model 43 Wattmeter Operation Maintenance...

  • Page 55: Model 4431 Replacement Parts List

    Maintenance Model 4431 Replacement Parts List Item Qty. Description Part Number Modified housing (instead of 4210-018) 4431-011 Guide plate assembly 4431-002 Movable plate assembly 4431-003 Line section assembly (Instead of 4230-018) 4431-004 RF cable sampler assembly consisting of: 1 BNC connector, Female 5-953 1 RF cable - RG58/U 5-773-1...

  • Page 56: Series 4520 Thruline Wattmeters

    Bird Model 43 Wattmeter Series 4520 Thruline Wattmeters Installation...

  • Page 57: Theory Of Operation, Operating Instructions And Maintenance Sections

    Maintenance Theory of Operation, Operating Instructions and Maintenance Sections Series 4520 Replacement Parts List Item Qty. Description Part Number Mounting panel (Comprises: M=meter, E=element socket, S=switch 4521-002 Model 4521 (1M, 1E) 4522-006 Model 4522 (1M, 2E, 1S) 4523-002 Model 4523 (1M, 1E) 4525-002 Model 4525 (1M, 1E) 4526-004...

  • Page 58: Model 4305A Thruline Wattmeter

    Bird Model 43 Wattmeter Item Qty. Description Part Number DC connector assembly 4230-010 Model 4521/23/25 Model 4522/26/27 Microammeter Model 4521/22/27 2080-002 Model 4523 2150-015 Model 4525 2080-005 Model 4526 2080-002 Switch control knob (Model 4522 only) 5-709 Plug connector 7500-076...

  • Page 59: Model 4305A Replacement Parts List

    Maintenance Model 4305A Replacement Parts List Item Description Part Number Housing assembly 4305A003 Cover assembly 4305A002 Line section assembly 4305-005 Model 4330 Thruline Wattmeter...

  • Page 60: Model 4330/31 Replacement Parts List

    Bird Model 43 Wattmeter Model 4330/31 Replacement Parts List Item Description Part Number Housing assembly 4330-004 2160-027 Microammeter, 10µA full scale, 3-1/2" rectangular Meter cable assembly 33" cable e/w 4220-097-12 spade lugs and dc connector Model 43P Peak Wattmeter...

  • Page 61: Model 43P Specifications

    Maintenance Model 43P Specifications RF Frequency Range 0.450-2700 MHz. depending on element selected. RF Power Rating 100 mW to 10kW, depending on element selected. CW mode ±5% of full scale Accuracy Peak mode ±8% of full scale When measuring rectangular pulse power, the following parameters must be observed: Duty cycle - 2% minimum Rep.

  • Page 62: Model 43P Peak Calibration

    Bird Model 43 Wattmeter Model 43P Peak Calibration...

  • Page 63: Maintenance

    Maintenance Maintenance Figure 15 Model 43P + R9 - Battery Battery...

  • Page 64: Customer Service

    Bird Model 43 Wattmeter Customer Service Service Group Sales Offices...
  • Page 65 Limited Warranty...
  • Page 66 4525 4526 4527 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; European Standard EN 55011:1991 - Emissions: Class B.

This manual is also suitable for:

Thruline 4305Thruline 4330Thruline 4431Thruline 4521-27Thruline 43p

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