BIRD 3140A Series Owner's manual

Type
Owner's manual

This manual is also suitable for

Transmitter Power Monitor/Meter
Model TPM series
&
3140A Power Meter Panel
Operation Manual
©Copyright 2016
by Bird Technologies, Inc
Instruction Book Part Number 920-TPM Rev. C
Microsoft and Windows are registered trademarks
of the Microsoft Corporation
i
Safety Precautions
Thefollowingaregeneralsafetyprecautionsthatarenotnecessarilyrelatedto
anyspecificpartorprocedure,anddonotnecessarilyappearelsewhereinthis
publication.Theseprecautionsmustbethoroughlyunderstoodandapplytoall
phasesofoperationandmaintenance.
WARNING
KeepAwayFromLiveCircuits
OperatingPersonnelmustatall
timesobservegeneralsafetyprecautions.Do
notreplacecomponentsormakeadjustmentstotheinsideofthetest
equipmentwiththehighvoltagesupplyturnedon.Toavoidcasualties,
alwaysremovepower.
WARNING
ShockHazard
DonotattempttoremovetheRFtransmissionlinewhileRFpowerispresent.
WARNING
DoNotService
OrAdjustAlone
Undernocircumstancesshouldanypersonreachintoanenclosureforthe
purposeofserviceoradjustmentofequipmentexceptinthepresenceof
someonewhoiscapableofrenderingaid.
WARNING
SafetyEarthGround
Anuninterruptibleearthsafetygroundmustbesuppliedfromthemain
powersourcetotest
instruments.Groundingoneconductorofatwo
conductorpowercableisnotsufficientprotection.Seriousinjuryordeath
canoccurifthisgroundingisnotproperlysupplied.
WARNING
Resuscitation
Personnelworkingwithornearhighvoltagesshouldbefamiliarwithmodern
methodsofresuscitation.
WARNING
RemovePower
Observegeneralsafetyprecautions.Donot
opentheinstrumentwiththe
poweron.
SafetyPrecautions
ii
Safety Symbols
Note: Callsattentiontosupplementalinformation.
Warning Statements
Thefollowingsafetywarningsappearinthetextwherethereisdangerto
operatingandmaintenancepersonnel,andarerepeatedhereforemphasis.
Seepage17
WARNING
Warningnotescallattentiontoa procedure,whichifnotcorrectly
performed,couldresultinpersonalinjury.
CAUTION
Cautionnotescallattentiontoaprocedure,which
ifnotcorrectlyperformed,
couldresultindamagetotheinstrument.
WARNING
DisconnecttheunitfromtheRFpowersourceandtheaclinebeforeany
disassembly.Thepotentialforelectricalshockexists.
TransmitterPowerMonitor/Meter
iii
Caution Statements
Thefollowingequipmentcautionsappearinthetextandarerepeatedherefor
emphasis.
Seepage3
Seepage6
Seepage7
Seepage17
CAUTION
Pin4mustbeconnectedtopowersupplyground,othergroundscanbeleft
openifdesired.
CAUTION
DB9arenotserialconnections.Serialconnectionstothemcould
damagethe
equipment.
CAUTION
ABirdCalibrationKitisrecommendedforthisprocedure.Performinga
calibrationwithanythingotherthanaBirdCalibrationKitvoidsBird’s
accuracyguarantee.
Performingafieldcali brationwillvoidanyremainingwarrantyonthis
product.Birdrecommendswaitinguntilthetermsofthewarrantyhave
passedbefore
performingafieldcalibration.
CAUTION
Donotuseharshorabrasivedetergentsforcleaning.
SafetyPrecautions
iv
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.
TransmitterPowerMonitor/Meter
v
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.
WARTUNG
ANWEISUNGEN FÜR DIE WARTUNG DES GERÄTES GELTEN NUR
FÜR GESCHULTES FACHPERSONAL.
ZUR VERMEIDUNG GEFÄHRLICHE, ELEKTRISCHE SCHOCKS, SIND
WARTUNGSARBEITEN AUSSCHLIEßLICH 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.
SafetyPrecautions
vi
RF VOLTAGE MAY BE PRESENT IN RF ELEMENT SOCKET - KEEP
ELEMENT IN SOCKET DURING OPERATION.
DE LA TENSION H.F. PEAT ÊTRE PRÉSENTE DANS LA PRISE DE
L'ÉLÉMENT H.F. - CONSERVER L'ÉLÉMENT DANS LA PRISE LORS
DE L'EMPLOI.
HF-SPANNUNG KANN IN DER HF-ELEMENT-BUCHSE ANSTEHEN -
ELEMENT WÄHREND DES BETRIEBS EINGESTÖPSELT LASSEN.
PUEDE HABER VOLTAJE RF EN EL ENCHUFE DEL ELEMENTO RF -
MANTENGA EL ELEMENTO EN EL ENCHUFE DURANTE LA
OPERACION.
IL PORTAELEMENTO RF PUÒ PRESENTARE VOLTAGGIO RF -
TENERE L'ELEMENTO NELLA PRESA DURANTE IL
FUNZIONAMENTO.
TransmitterPowerMonitor/Meter
vii
About This Manual
Thismanualcoverstheoperatingandmaintenanceinstructionsforthe
followingmodels:
Changes to this Manual
Wehavemadeeveryefforttoensurethismanualisaccurate.Ifyoudis cover
anyerrors,orifyouhavesuggestionsforimprovingthismanual,pleasesend
yourcommentstoourSolon,Ohiofactory.Thismanualmaybeperiodically
updated.Wheninquiringaboutupdatestothismanualrefertothepart
number
andrevisiononthetitlepage.
Terminology
There are some unique terms used throughout this literature. They
are defined here clarify any misunderstanding.
TPM — RefertotheinlineTransmitterPowerMonitor.
Display or Panel Meter — Referstoeitherthe3140A4or3140A8meter.
Chapter Layout
Introduction — DescribesthepurposeandfunctionoftheTPMaswellasa
generaloverviewoftheproduct.
Installing & Operating Instructions - TPM — Describesthefeaturesof
theTransmitterPowerMonitorandprovidespowerupinstructions.
Installing & Operating Instructions - 3140A Panel — Describesthe
featuresofthePowerMeterPanelandprovidespowerupinstructions.
Calibration — Describesdifferentcalibrationmethodsandwhento
usethem.
Performance Specifications — Specificationsandpartsinformationare
alsolisted.
AllTPMseries 3140A4 3140A8
1
Table of Contents
Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . i
SafetySymbols...... ..................... .....................
.. ii
WarningStatements............................ ................. ii
Caution
Statements........................................ ......iii
SafetyStatements..
.............................................iv
About This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii
ChangestothisManual.
............... ..................... ..... vii
Terminology ........
........................................... vii
ChapterLayout.....
........................................... vii
Chapter 1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
PurposeandFunction ....
........................................ 1
Chapter 2 Installing & Operating
Instructions - TPM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
InstallingtheTPM......
................................... ...... 3
NormalOperation.......
..................................... 4
Chapter 3 Installing & Operating
Instructions - 3140A Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
InstallingthePanel.........
..................................... 6
Chapter 4 Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
ZeroCalibrating..........
....................................... 7
PassiveCalibration.........
............... ....................... 8
ActiveCalibration..........
............... ..................... . 9
Chapter 5 Performance Specifications . . . . . . . . . . . . . . . . . . . . . . . 11
TransmitterPowerMeter(TPM).........
......................... 11
ModelNamingTable ......................
................... 11
Dimensions................. .............
................... 14
3140AMeterPanel.. ..........................
................. 16
Chapter 6 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
InspectionandCleaning.............................
............ 17
ROHS .....................................
.................... 17
Troubleshooting................ .. ...........
................... 19
PartsList ...... .. .....................
......................... 20
CustomerService.......................
........................ 21
Limited Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
1
Chapter 1 Introduction
Calibratedcouplingportsandaccuratepowermeasurementcombinedinthe
sameunitprovidesforeasyuseandaccuratereadings.TheTPMisthefirstinline
powermonitorthatcanbecalibratedinlineandonsiteminimizingdowntime
andoptimizingonairtime.Inaddition,asimplifiedinterfaceallowsfora
high
levelofcustomizationandintegration.
Purpose and Function
TheTPMisusedtomeasurepowersignalsinbroadcastsystems.Itisused
directlyinlinewiththesystembeingtested.ItsoutputprovidesalinearDC
voltageoutputfrom0to4voltsallowingforawidevarietyofinterfaceoptions.
Itsinlinecalibrationcapabilityallowsforgreater
accuracyinasingle
application(withanaccuratepowerreference)anditsintegratednon
directionalcouplerallowsforsignalanalysisinminimalspacerequirements.Itis
availablein7/8 , 15/8 , and31/8”,50ohmlinesforFM,VHF,andUHFbroadcast
frequencies.
WhencombinedwithaBirdmodel3140A4
or3140A8TransmitPowerMeter
(TPM)display,acompleteadjustmentsystemisachieved.Thedisplaysuppliesa
visualindicationofForwardandReflectedpowerbeingsampledbytheinline
TPM.MultipleTPM’scanbeselected(onlyoneperchannelsetting)togivethe
operatoranoverallconditionofthetransmitter
system.
3140 Panel
TPM7
TPM1
2
Chapter 2 Installing & Operating
Instructions - TPM
Figure 2 TPM
Note: Thelabelonthetopoftheunitidentifiestheconnectors
andports.Theyaredefinedasfollows:
Note: TPMunitsareterminatedatthetimeofassembly.
SOURCE
ConnecttothesourceoftheRFsignal(transmitter side)
LOAD
ConnecttotheloadoftheRFsignal(antenna/dummyload)
FORWARD
Theforwarddirectionalcouplerport.Ter mi natethisportin
50ohmsatalltimes.
1
1 If these ports are not terminated in 50 ohms, power
measurements will not be accurate.
REFLECTED
Thereflecteddirectionalcouplerport.Terminatethisportin
50ohmsatalltimes.
1
TEST
Anondirectionalsampleport.Noterminationisrequired.
To Source
Operation LED
Calibration Cover
FWD Port
RFL
Port
Test
Port
Calibration Cover
Note: Figureshownwithterminationsassembled.
To Load
Communication
Connector
TPM1 Shown
TransmitterPowerMonitor/Meter
3
Installing the TPM
TheTPMhastwoRFconnectors(SourceandLoad)thatconnecttothe
transmissionline,threetestportconnectorsthataretypeNfemaleconnectors
(Forward,Reflected,andTest),andoneninepinsubminiaturecommunication
connector(DB9Male).
1. Dothefollowing:
ConnecttheRFconnectorlabeledSourcetothetransmittersideofthe
transmissionline.
ConnecttheRFconnectorlabeledLoadtotheantennaorloadsideof
thetransmissionline.
UseanappropriatecouplingkittosecuretheTPMinplace.
2. ConnecttheDB9connectortoasinglechannelonModel3140Apower
meterpanel,ortoanalternateappropriatepowersupplyandvoltmeters
thatwillindicatetheforwardandreflectedpower.
Note: ThechartbelowFigure2identifiesthesignals
oneachpin
oftheDB9connector.
Figure 4 DB-9 Connector
Note: Above4VDC,theaccuracyspecdoesnotapply.
CAUTION
Pin4mustbeconnectedtopowersupplyground,other
groundscanbeleftopenifdesired.
Pin Description
1 Forward Voltage Output, 0 to 5 VDC, 1.0 kohm impedance
2 Ground
3 Reflected Voltage Output, 0 to 5 VDC, 1.0 kohm impedance
4 Power Supply Ground
5 DC Power Input, +11 to +18 VDC, <0.1 A current draw
6 Ground
7 Ground
8 Ground
9 Zero Calibration. DO NOT ground this pin. Leave this pin floating.
1
69
5
Pin 4 -
Power Supply
Ground
Installing&OperatingInstructions‐TPM
4
Normal Operation
Note: Couplerportsmustbeterminatedtoensureaccuratepower
measurements.Terminatebothforwardandreflectedcoupler
portsin50ohms.Failuretoterminatetheseportswillresultin
inaccuratepowermeasurements.
1. InstalltheTPMtothetransmissionline.See
"InstallingtheTPM"onpa ge
3
.
2. ApplyDCinputpowertotheTPM.
3. ApplyRFpowertotheTPM.
4. Useavoltmetertomeasuretheforwardvoltageandreflectedvoltage.
Note: Thesevoltageswillbebetween0V(nopower)and4.0V
(fullscalepower).Theforwardandreflectedvoltagesarelinear.
Note: Thefullscalereflectedpower
is1/10thevalueofthefull
scaleforwardpower.
5
Chapter 3 Installing & Operating
Instructions - 3140A Panel
The3140Aisthe standarddisplayandpowersupplyfortheTPM.Itcomesin
both4ChannelTPMand8ChannelTPMmodels.Itfitsinastandard2Urackand
requiresasingle15Vpowersupply(suppliedwithpanel).
Figure 5 3140 Panel
FWD
Meter
Power
Button
DB9 Connections
Switch Notation Area
Meter
Adjustment
Pot
Channel
Selector
RFL Meter
Front View
DB9 Connections
Rear View
Meter
Adjustment
Pot
Meter
Adjustment
Pot
Zero Calibrate
Switch
Meter
Adjustment
Pot
Zero
Calibrate
Switch
Note: 3140A8shown.
Note: Removetheshuntingwiresfromthemeters.
Installing&OperatingInstructions‐3140APanel
6
Installing the Panel
1. Placepanelinanemptyslotontherackandattachwithmountingscrews
(optional).
2. Connectthepaneltoapowersupply.
3. AttachaTPMtooneoftheavailablechannelsonthebackofthepanel.
4. LabelwhatTPMisattachedtowhichchannelintheswitchnotationareaon
the
frontofthepanel.
Note: Usershouldnoteeachunit’sfullscalepowerandlocationin
thenotationarea.Useawatersolublemarkertoavoidpermanent
entries.
5. Repeatsteps3through5forotherTPM’s,ifnecessary.
6. Turnthepanelon.
Note: AllTPMsarepowered,butonlyoneTPMoutputisdis
playedatatime.
7. SelectthedesiredTPMtobemeasuredbyusingthechannelselector.
Note: ThepotsadjustthemeterindependentlyofTPM
calibration.Theappropriatemeterscale(1/2.5/5)mustbeused
witheachTPM.
CAUTION
DB9arenotserialconnections.Serialconnectionstothem
coulddamagetheequipment.
FWD/RFLMeter ProvidesvisualindicationofmeasuredpowerforselectedTPM.
MeterAdjPot Providesfullscalemetercalibration.
ChannelSelector
Selectseitheroneoffour(3140A4)oroneofeight(3140A8)
connectedTPM’s.
PowerButton AppliesDCinputpowertopanelmeter.
ZeroCalibrate
Switch
Groundspin9toZerocalibratetheselectedTPM.
DB9
Connection
InterfaceconnectiontoTPM’s.ProvidespowerandZeroadjustto
connectedTPM’s.ReceivesTPMoutputtodrivemeters.
7
Chapter 4 Calibration
Everycalibrationprocedurewillfinishbyprovidingatableofvoltagesthat
correspondtopowerlevelsatthecalibrationfrequency(f
0
).Itwillbeuptothe
usertousethosevoltagestogenerateanequationorfillinalookuptableon
whatevertheychoosetouseasanoutput.
Zero Calibrating
Note: Thisprocedurecanbeperformedan ytimetheRFisoffand
theTPMison.ThereisnoneedtocyclepoweragainontheTPM.
1. Dooneofthefollowing:
Locatepin9ontheTPM’sDB9connectorandshortittoground.
Ifconnectedtoadisplaypanel,pressthezerocalibrationswitch.Refer
toFigure4forZeroCalibrationSwitchlocation.
Note: ZerocalibratewillsetboththeFWDandRFLatthesame
time.
Figure 7 Pin 9
CAUTION
ABirdCalibrationKitisrecommendedforthisprocedure.Performinga
calibrationwithanythingotherthana
BirdCalibrationKitvoidsBird’s
accuracyguarantee.
Performingafieldcali brationwillvoidanyremainingwarrantyonthis
product.Birdrecommendswaitinguntilthetermsofthewarrantyhave
passedbeforeperformingafieldcalibration.
1
69
5
Pin 9
Calibration
8
Passive Calibration
CalibratetheTPMonthetransmitteritismonitoring.Alsoareferencepower
meterisneededtomeasuretheoutputofthetestportontheTPM(model
7006A250).Thiscalibrationcanbeperformedwhiletransmittingonair(forward
only)orintoadummyload.CouplingcalibrationdatafortheTPM
isalso
needed.
Byusingseveraldifferentpowerlevels,anequationorlookuptablecanbe
generatedforthevoltageoutput ofthe TPMasafunctionofpowerlevelatthe
frequencyofcalibration.
1. InstalltheTPMtothetransmissionline.See
"InstallingtheTPM"onpa ge
3
.
2. RemovetheloadfromtheFwdtestport.
3. ConnectthecalibrationstandardtotheFwdtestport.
4. ApplyRFpower.
5. Recordthetransmitterfrequencydisplayedandfindthelistingclosesttoit
ontheTPM’scouplingcalibrationdatacard.
Note: Makenoteofthecalibrationfactor.
6. Enterthecalibrationfactorintothecalibrationstandard’soffset
function.
7. MeasurethepoweronthecalibrationstandardandvoltageontheTPM
outputsimultaneously.
8. Recordthevoltageversespower.
9. Turntheunitaroundandrepeatsteps1to7forReflectedcalibration.
Note: Reflectedfullscaleis1/10thofforwardfullscale.
Note: Calibratingthereflectedportisoftenoptional.Checkwith
theFCCorotherrulingbodytodetermineifitisnecessaryornot.
Figure 8 Calibration
ForwardCalibrationSetUp
TPM
Connector
ReflectedCalibrationSetUp
Calibration Standard
CalibrationKit
TransmitterPowerMonitor/Meter
9
Active Calibration
TheactivemethodwillrecalibratetheTPMcompletely.Thisprocedurewillvoid
thecalibrationandaccuracyspecificationsfortheunit.Theaccuracywillbe
basedontheaccuracyofthereferencepowermeterusedforthisprocedure.In
additiontotheequipmentneededfortheactivecalibration,aBird6A340ADJ
PotentiometerAdjustmentTooltoadjustthepotentiometersontheTPMisalso
needed.
SetthetransmittersRFoutputtoadesiredpowerlevelusingthereference
meteronthetestportandthetestportcalibrationdata.Then,usingaBird
6A340ADJPotentiometerAdjustmentTool,turnthepotentiometersuntilthe
desiredvoltageoutputisreached.Extradatapointscanbetakenatdifferent
powerlevelstoconfirmthe linearityandgeneratealookuptabletodrivethe
restofthepowerlevels.
Thebenefitofthiscalibrationmethodisthatthecustomercansettheoutput
voltagetheywanttodrive
theirexternalmeter.Withtheothercalibration
methods,thecustomersimplyusesTPMoutputvoltagesassetatthefactory .
1. InstalltheTPMtothetransmissionline.See
"InstallingtheTPM"onpa ge
3
.
2. RemovetheloadfromtheFwdtestport.
3. ConnectthecalibrationstandardtotheFwdtestport.
4. ApplyRFpower.
5. Recordthetransmitterfrequencydisplayedandfindthelistingclosesttoit
ontheTPM’scalibrationdatacard.
Note: Makenoteofthecalibrationfactor.
6. Enterthecalibrationfactorintothecalibrationstandard’soffsetfunction.
7. BreakthesealovertheFwdCalhole.
8. Adjustthepotentiometermanuallyuntilthevoltageissuchthatthe
calibrationstandardreadsfullscalepower=4.00V.
Example:Ifthepowerisexactly50%offullscale,adjustthepotentiometertoget
V=2.00V.
9. Repeatsteps1to9forReflectedcalibration.
Note:
Calibratingthereflectedportisoftenoptional.Checkwith
theFCCorotherrulingbodytodetermineifitisnecessaryornot.
Calibration
10
Figure 9 Calibration Data Card
Transmitter
Frequency
Fwd Coupling
Offset at 195 MHz
Rfl Coupling
Offset at 195 MHz
11
Chapter 5 Performance Specifications
Transmitter Power Meter (TPM)
Model Naming Table
Note: ModelsTPM3x‐LVandmodelsTPMx‐USarenotoffered
forsale.
FrequencyRange‐Modeldependent.Seetableabove
ForwardFullscalePower‐Modeldependent.Seetablebelow.
Note: Maximumsafelinepowermaybelowerthanfullscale
power.SeeLineSectionMaxRFPowervsFrequencytable
onpage
20forrecommendedmaxsafelinepowersattheactivefrequency.
Line Size and Interface
Style
Frequency
Band*
Power
Range
UHF
Sub-Band
7xy=7/8 withQCconnectors,
wherexistheinputconnector
andyistheoutputconnector.
Possiblevaluesofxandyare:
L=54‐88MHz
F=88‐108MHz
H=174‐216MHz
U=470‐806MHz
V=VeryLow
L=Low
M=
Medium
H=High
S=VeryHigh
A=470‐554MHz
B=554‐638MHz
C=638‐722MHz
D=722‐866MHz
A=N(F) B=N(M)
C=LC(F) D=7/8 Flange
H=716
DIN(F)
J=716DIN(M)
K=UHF(F) L=UHF(M)
1=15/8
Flanged
1U=5/8
Unflanged
“recessed”
1UF=15/8 Unflanged“flush”
3=31/8”
Flanged
3U=31/8”
Unflanged
“recessed”
3UF=31/8”Unflanged“flush”
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BIRD 3140A Series Owner's manual

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