Bird 8890-400 User Manual
INSTRUCTION BOOK
A
OPERATING INSTRUCTIONS
TERMALINE®WATTMETER
SERIES 8890-400
Electronic Corporation
Cleveland (Solon) Ohio US
Copyright 1997 by Bird Electronic Corporation
Instruction Book Part Number 920-8890-400S Revision A.
®
Termaline
and Thruline®is a Registered Trademark of
Bird Electronic Corporation
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 phrases of operation and maintenance.
Keep Away From Live Circuits
Operating personnel must at all times observe normal safety regulations. Do
not replace components or make adjustments to the inside of the test equipment with the high voltage supply turned on. To avoid casualties, always remove power.
Do Not Service Or Adjust Alone
Under no circumstances should any personnel reach into an enclosure for the
purpose of service or adjustments of equipment except in the presence of
someone who is capable of rendering aid.
Safety Earth Ground
An uninterruptible earth safety ground must be supplied from the main
power source to test instruments. Grounding one conductor of a two conductor power cable is not sufficient protection. Serious injury or death can occur
if this grounding is not properly supplied.
Shock Hazard
Do not attempt to remove the RF transmission line while RF power is present. Radiated RF power is a potential health hazard.
Resuscitation
Personnel working with or near high voltages should be familiar with modern
methods of resuscitation.
Safety Symbols
WARNING
Warning notes call attention to a procedure, which if not correctly
performed, could result in personal injury.
i
CAUTION
Caution notes call attention to a procedure, which if not correctly
performed, could result in damage to the instrument.
This symbol appears on the equipment indicating there is
important information in the instruction manual regarding
that particular area.
Note: Calls attention to supplemental informa-
+
tion
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
Before placing the unit into operation, remove the shipping plug at the
top of radiator, near front, substitute with the specially shielded
breather plug. Use a 3/4 inch flat wrench for this purpose - do not lose
the O-Ring Seal.
This vent hole must remain open at all times when the unit is in
operation or cooling. Failure to do this could result in damage to the
equipment and endanger the operator’s safety. The use of the vent plug
also protects the filler opening against intrusion of foreign material
while allowing unobstructed venting of the tank. The shipping plug
(with O-Ring seal) should be put back in place whenever the unit is to
be transported. Be sure to check this plug.
WARNING
Never attempt to disconnect RF equipment from the transmission line
while RF power is being applied. Leaking RF energy is a potential
health hazard.
Caution Statement
The following equipment caution appears in the text whenever the equipment
is in danger of damage and is repeated here for emphasis.
CAUTION
This unit is factory filled with approximately 2.9 gallons (11 liter) of a
specially selected dielectric fluid, P/N 5-1070-3. No other coolant should
be used.
ii
Safety Statements
USAGE
ANY USE OF THIS INSTRUMENT IN A MANNER NOT
SPECIFIED BY THE MANUFACTURER MAY IMPAIR
THE INSTRUMENT’S SAFETY PROTECTION.
USO
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.
UTILISATION
TOUTE UTILISATION DE CET INSTRUMENT QUI
N’EST PAS EXPLICITEMENT PRÉVUE PAR LE FABRICANT PEUT ENDOMMAGER LE DISPOSITIF DE PROTECTION DE L’INSTRUMENT.
IMPIEGO
QUALORA QUESTO STRUMENTO VENISSE UTILIZZATO IN MODO DIVERSO DA COME SPECIFICATO DAL
PRODUTTORE LA PROZIONE DI SICUREZZA
POTREBBE VENIRNE COMPROMESSA.
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 CAPACITADO PARA HACERIO.
iii
WARTUNG
ANWEISUNGEN FÜR DIE WARTUNG DES GERÄTES
GELTEN NUR FÜR GESCHULTES FACHPERSONAL.
ZUR VERMEIDUNG GEFÄHRLICHE, ELEKTRISCHE
SCHOCKS, SIND WARTUNGSARBEITEN
AUSSCHLIE_LICH VON QUALIFIZIERTEM SERVICEPERSONAL DURCHZUFÜHREN.
ENTRENTIEN
L’EMPLOI DES INSTRUCTIONS D’ENTRETIEN DOIT
ÊTRE RÉSERVÉ AU PERSONNEL FORMÉ AUX OPÉRATIONS D’ENTRETIEN. POUR PRÉVENIR UN CHOC
ÉLECTRIQUE DANGEREUX, NE PAS EFFECTUER
D’ENTRETIEN SI L’ON N’A PAS ÉTÉ QUALIFIÉ POUR
CE FAIRE.
ASSISTENZA TECNICA
LE ISTRUZIONI RELATIVE ALL’ASSISTENZA SONO
PREVISTE ESCLUSIVAMENTE PER IL PERSONALE OPPORTUNAMENTE ADDESTRATO. PER EVITARE PERICOLOSE SCOSSE ELETTRICHE NON EFFETTUARRE
ALCUNA RIPARAZIONE A MENO CHE QUALIFICATI A
FARLA.
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.
iv
About This Manual
This instruction book covers the models:
8890-400A 8897-400A
8891-415B 8897-415B
8891-420B 8897-420B
This instruction book is arranged so that essential information on safety is
contained in the front of the book. Reading the Safety Precautions Section before operating the equipment is strongly advised.
The remainder of the instruction book is divided into Sections and Chapters.
At the beginning of each chapter a general overview will be given, describing
the contents of that chapter.
Operation
First time operators should read Chapter 1 - Introduction, Chapter 2 - Theory
of Operation, and Chapter 3 - Installation, to get an overview of equipment
capabilities and how to install it. An experienced operator can refer to Chapter 4 - Operating Instructions. All instructions necessary to operate the
equipment are contained in this section.
Maintenance
All personnel should be familiar with preventive maintenance found in Chapter 5 - Maintenance. If failure should occur, the troubleshooting section will
aid in isolating and repairing the failure.
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. When inquiring about updates to this manual, refer to the part
number and revision level on the title page.
v
Table of Contents
Safety Precautions ......................i
Safety Symbols ......................i
Warning Statements ....................ii
Caution Statements ....................ii
Safety Statements.....................iii
About This Manual ....................v
Introduction. ........................1
Purpose and Function. ...................1
Items Supplied. ......................1
Description.........................1
Accessory Items.......................2
Items Required. ......................2
Theory of Operation. .....................5
Element Socket. ......................5
Coupling Circuit. .....................6
Dielectric Coolant and Seal. .................7
Cooling. .........................7
Installation. .........................9
Power and Utility Requirements................9
Environmental Requirements. ................9
Tools Required. ......................9
Mounting. ........................9
Coupling Kits........................9
vi
RF Connection.......................10
Thermoswitch. ......................12
Meter Placement. .....................15
Blower Assembly......................15
Operating Instructions. ...................17
Use and Function of Controls. ...............17
Initial Adjustments.....................17
Start-Up. ........................18
Normal Operation. ....................18
Operation Under Abnormal Conditions. ...........18
Shutdown. ........................18
Emergency Shutdown. ...................19
Maintenance. ........................21
Customer Service. .......................21
Sales / Repair Facilities. ..................21
Sales Facilities. .....................21
Cleaning. ...........................22
Outside Surfaces. .....................22
Inspection. ..........................22
Preventive Maintenance. ....................23
Contact Adjustment. ......................23
Repairs. ...........................24
RF Load Resistor Test. .....................24
Assembly............................25
Coolant. ...........................26
RF Input Connector. ......................26
vii
Shipment............................27
Storage. ...........................28
Troubleshooting. ........................29
Replacement Parts List......................30
viii
Chapter 1
Introduction
This instruction book is intended for use by operators of the
Model 8890-400 Termaline Wattmeter.
This chapter contains introductory information including
product specifications; items supplied; and accessory items
available.
Purpose and
Function
Items
Supplied
The Series 8890-400 Termaline Wattmeters are low reflection and nonradiating termination’s for coaxial transmission
lines. They aid in the tuning and troubleshooting of transmission equipment whose characteristics fall within the performance range of the elements used. These performance
specifications are described in the next paragraph and summarized in the Specifications.
s Coolant — Pre-filled unit
s Shipping Plug
s Vent Relief Valve
s
Coupler — Pre-Mounted
s
Instruction Manual
Description The Series 8890-400 Wattmeters will safely and continu-
ously dissipate up to 5000 watts of RF power when blower
equipped. It is possible to subject these loads to moderately
higher power for limited periods of time. In this case it is
recommended that an 8890-400 be equipped with an overtemperature thermoswitch, Bird P/N 8890-008, which
should be interlocked with the source of RF energy. In this
way, the load will be automatically protected from the consequences of over heating. The intended frequency range is
2 to 1000 MHz within which the loads will reflect very little
power back to the source. The actual VSWR, “Voltage
Standing Wave Ratio”, will not exceed 1.15 to 1.00 from dc
to 1 Ghz.
1
Bird Model 8890-400 Series Termaline Wattmeter
Accessory
Items
Items
Required
Thermoswitch P/N 8890-008 — An optional item for Models
8891-400A and 8897-400A.
Blower Assembly P/N BA-310 — An optional item for Models 8891-400A and 8897-400A. All other wattmeters are
shipped with the blowers already mounted.
Mating Connector — Necessary on the transmission line to
which the load is to be connected.
AC Socket — If the Model BA-310 Blower Assembly Kit is
ordered, provide an ac socket convenient to the equipment.
2
Specifications
Impedance 50 ohms
VSWR 1.15 - 1.00 dc to 1000 MHz
Connectors
Model 8891-400A, 8891-420B
Model 8897-400A
Power Rating*†
Models 8891-400A, 8897-400A
All other models
Frequency Range* 2 to 1000 MHz
Accuracy ± 8% of full scale
Ambient Temperature
Storage
3-1/8” EIA flanged
3-1/8” unflanged
(Flush Center Conductor)
2500 W continuous duty
5000 W continuous duty
+10°C to +40°C
(+50°F to 104°F)
Introduction
Operating
Cooling Method Liquid dielectric and convection
Overall Dimensions 17-3/16” H x 7-1/8” W
Length
Flanged Units
Unflanged Units
Meter Dimensions 4-11/64”L x 5-9/16”W x 6-1/2”H
Meter Weight 5 lb (2.27 kg)
Finish
Load and Meter Housing
RF Section
*Actual frequency and power ratings are determined by the element used.
†Power Rating with blower assembly installed:
Blower running - 5000 W
Blower not running - 1250 W
**Assisted by forced draft when blowing assembly is installed and running.
+25°C ± 5°C
(77°F ± 9°F)
currents**
(437 x 181 mm)
25-1/8” (638 mm)
24-5/32” (613.6 mm)
(106 x 141 x 165 mm)
Grey Powder Coat
Bright Silver Plate
3
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