David Clark U9920 AIRCRAFT PUSH BACK FIXED PART GATEWAY CONTAINING DECT TRANSCEIVER (UPCS) User Manual 40993G 01 U9920 GPB

David Clark Company Inc. AIRCRAFT PUSH BACK FIXED PART GATEWAY CONTAINING DECT TRANSCEIVER (UPCS) 40993G 01 U9920 GPB

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USER MANUAL

Push Back Gateway

U9920-GPB U9920-GPB(EU)

(P/N: 40993G-01) (P/N: 40993G-02)

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READANDSAVETHESEINSTRUCTIONS.Followtheinstructionsinthisinstallation

manual.Theseinstructionsmustbefollowedtoavoiddamagetothisproductand

associatedequipment.Productoperationandreliabilitydependsonproperusage.

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DONOTINSTALLANYDAVIDCLARKCOMPANYPRODUCTTHAT

APPEARSDAMAGED.UponunpackingyourDavidClarkproduct,

inspectthecontentsforshippingdamage.Ifdamageisapparent,

immediatelyfileaclaimwiththecarrierandnotifyyourDavidClark

productsupplier.

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ELECTRICALHAZARD‐Disconnectelectricalpowerwhenmakingany

internaladjustmentsorrepairs.Allrepairsshouldbeperformedbya

representativeorauthorizedagentoftheDavidClarkCompany.

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STATICHAZARD‐Staticelectricitycandamagecomponents.

Therefore,besuretogroundyourselfbeforeopeningorinstalling

components.

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LI‐POLYMER‐ThisproductisusedwithLi‐Polymerbatteries.Donot

incinerate,disassemble,shortcircuit,orexposethebatterytohigh

temperatures.Batterymustbedisposedofproperlyinaccordance

withlocalregulations.

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TheU9920‐GPB(40993G‐01)PushBackGatewayisaportablewirelesscommunicationdevice

thatwhenusedinconjunctionwithoneormoreU9910‐BSW(40992G‐01)orU9912‐BSW

WirelessBeltStationsprovidescommunicationforuptofourusersaswellasaninterfacetoan

aircraftintercomsystem.Onlyonegatewayisrequiredpersystem.Uptofourbeltstationscan

beconnectedtoonegateway.

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Model U9920-GPB

Push Back Gateway

P/N 40993G-01

Rx Adjust Aircraft

Connector

Power

Button

Status LED

Battery

Compartment

Battery Release

Screw

Link/PTT

Button

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Figure1:OverviewofGateway

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Beforeabeltstationandagatewaycanbeconnected,theymustfirstbelinked.Asasecurity

measure,theclose‐linkfeaturerequiresdevicestobeinproximityofabout1to3ft(0.3to0.9m)

inordertosuccessfullylink.Thisensuresthattheunitsarenotinadvertentlylinkedwithother

unitsonthepremises.

Linkingprocedure:

1. EnsurepowerisonforbothU9920‐GPBandbeltstation(seePower‐up/Power‐down)

2. Ensureunitsarewithin1to3ft(0.3to0.9m)ofeachother.

3. Simultaneously(within1‐2sec)pressandreleasethePTTbuttonontheU9920‐GPBand

thebeltstationtolinkwith.

4. AmberLED’swillflashonbothdevices.AmomentaryredLEDindicatesasuccessful

close‐link.

5. UponsuccessfullinktheU9920‐GPBwillattempttoestablishaconnectionwiththebelt

station.

6. UponsuccessfullyestablishingconnectiontheLEDonthegatewaywillflashagreen

patterncorrespondingtothenumberofbeltstationsconnected.

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Tip:

Oncelinked,thedeviceswillnotneedtobelinkedagainunlesstheyarepurged(see

Purging).

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Eachbeltstationisabletobelinkedtoonlyonegatewayatatime.Agatewaycanhaveuptosix

beltstationslinkedandbeconnectedtofourofthosesixatonetime.

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Thepowerbuttonhasamulti‐colorLEDinthecenterwhichservesasastatusindicationforthe

gateway.Table1belowliststhesestates.

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Table1:LEDStatusIndications

LEDColorBlinkRateStatus

RedSolidInitializing/powerup

RedOnceConnectionDropped

RedOnceConnectionEstablished

RedAnyLowbattery(approx.1hrremaining)

OrangeSlowIdle/Disconnected

OrangeFastLink/ConnectioninProgress

OrangeSolidPTTasserted

GreenSlowConnected(patternindicates

numberofbeltstationsconnected)

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Power‐Up/Power‐Down

TopoweruptheU9920‐GPBPushBackGateway,pressandholdthePOWERbuttonfor

approximatelytwoseconds.TheLEDwillturnredandthenbeginflashingorange.Ifthereare

linkedbeltstationswithinrange,theywillautomaticallyconnecttothegatewayinafewseconds

afterpowerup.

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TopowerdowntheU9920‐GPB,pressandholdthePOWERbuttonforapproximatelytwo

seconds.TheLEDwillturnredandthenturnoff.Thegatewayisnowpowereddown.

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AircraftInterface

TheU9920‐GPBisdesignedforairportpushbackoperationsandcanbeconnectedtoanaircraft

intercomsystem.Onceconnected,uptofourbeltstation(U9910‐BSW)userscancommunicate

tothepilotoftheaircraftbypressingthePTTbuttononthebeltstation.APushBackCableis

requiredbetweentheU9920‐GPBandtheaircraft(cableP/N:41035G‐02includedwithgateway,

standard1/4"interphoneconnection).SeeFigure2below.

Line up

Orange Dots and Twist

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Figure2:PushBackCableConnection

[additionalfigureshowingaircraftinterface]

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AircraftLevelAdjustment

Audiolevelscanvarybetweenaircraft.Tocompensateforthis,theU9920‐GPBhasareceive

leveladjustknob(seeFigure1).Turningthisknobwillincreaseordecreasetheaudiolevel

comingfromtheaircraftandintothewirelessintercom.Byadjustingthisknob,optimum

performancecanbeachieved.

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ReceiveLevelAdjustmentProcedure

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1. ConnectatleastonebeltstationtotheU9920‐GPBgatewayandensuresidetoneis

present(seebeltstationUserManual).

2. PressandholdPTT

3. WhileholdingPTT,beginspeakingandslowlyturnReceiveLevelAdjustknobonthe

U9920‐GPBgatewayclockwiseuntilyouhearanechoofyourownvoice.

4. TurntheReceiveLevelAdjustknobslightlycounter‐clockwiseuntiltheechostops.

5. ReleasePTT.

6. Youmaywishtoverifycommunicationwiththepilotorsomeonehard‐wiredtothe

aircraft’sintercom.

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Communication

Note:Itishighlyrecommendedforwirelesspush‐backsystemsthateachheadsetuserinterface

throughanon‐VOXbeltstation(U9912‐BSW),asextremelyhighandvaryingnoiselevelswithin

thisenvironmentcanbecomechallengingtotheVOXfeature,resultinginunwantedrampnoise

beingpresentinaVOXbeltstationuser'sheadsetandcausinghim/hertofrequentlyadjustthe

VOXsetting.VOXbeltstationsmaybedesiredinmorestableandlessextremenoise

environments.

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AllconnectedbeltstationswillbeabletocommunicatewitheachotherthroughtheU9920‐GPB

whileinrange.Additionally,allbeltstationuserswillalwayshearanytrafficontheaircraft

intercom.Tospeakovertheaircraftintercom,thebeltstationusermustpressandholdhis/her

PTTbutton.MultiplebeltstationusersmayPTTandthusspeakovertheaircraftintercom

simultaneously.Wirelessintercomforallconnectedbeltstationusersisalsoachievedinthis

manner.Formoreinformationconsulttheusermanualforthebeltstation.

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Range

Therangeofabeltstationandagatewaycanbeupto300ft(100m).Ifyouareinan

environmentwithmetalorconcretewalls,thisrangecouldbereduced.Whenthebeltstation

travelsoutofrangeofthegateway,avoicealertwillindicatethattheconnectionhasbeenlost.

Toreconnect,simplymovebackintorangeandconnectionwiththegatewaywillautomatically

bereestablished,alsonotedbyavoicealert.

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LowBattery

Undertypicalconditions,thebatteryinthegatewaywilllastupto24hoursorlonger.TheStatus

LEDturnsredtoindicatethatthebatteryisrunninglow.Atthispoint,approximately1hourof

operationremains.

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Insomecircumstancesitmaybenecessaryto“purge”theU9920‐GPBofsomeofitslinkedbelt

stations.Typicallypurgingisnotnecessaryunlesstherearemultiplegatewaysinthesame

vicinityandyouwishtoremoveabeltstationfromthisgatewayandlinktoadifferentgateway.

Agatewaycanlinkuptosixbeltstationswhereabeltstationcanbelinkedtoonlyonegateway

atatime.

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FullPurge

AfullpurgeisthepurgemethodemployedbytheU9920‐GPBandclearsalllinksinthegateway.

Afterthisprocedurenobeltstationswillautomaticallyconnecttothisgatewayuntillinked.



FullPurgeprocedure



1. Powerdowngateway(seePower‐up/Power‐down).

2. PressandholdPTTbutton.Donotrelease.

3. Powerupthegateway(seePower‐up/Power‐down).

4. ReleasePOWERbutton.

5. ReleasePTTbutton.

6. StatusLEDwillflashredtoindicatesuccessfulpurge.



AllDavidClark9900‐serieswirelessbeltstationsandbatteryoperatedcontrollers/gatewaysusea

3.7VLi‐Polymerrechargeablebattery.Thisbatteryisremovedbylooseningthebatteryrelease

screw(SeeFigure1).ThebatteriesarechargedwiththeA99‐04CRG4‐baybatterycharger

(41034G‐01).



Wheninstallingabattery,takecaretoalignthebatteryproperlyandfullytightenthescrew(see

Figure3).

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Insert Battery

with Contacts

Down

Lift Door

Figure3:BatteryInsertion/Removal

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Table2:Troubleshooting

ProblemSolution

GatewaywillnotturnonReviewPower‐up/Power‐downprocedure

Ensureafreshbatteryisinstalled

CannotlinkabeltstationReviewRegistrationprocedure

Ensureunitsarewithin1to3ft(0.3to0.9m)of

eachother

TryaFullPurge

CannotspeaktoaircraftPTTnotpressed



• Battery(P/N:40688G‐90)

• Protectiveskin,orange(A99‐02SKN,P/N:40796G‐03)

• AircraftInterfaceCord,PJ‐051{1/4"plug}(P/N:41035G‐02)

• AircraftInterfaceCord,U‐174plug{Embraer}(P/N:41035G‐03)

o Note:NOTformilitaryaircraft(consultfactory)

• AircraftInterfaceCord,dualGeneralAviationplugs{Saab,others}(P/N:41035G‐04)

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TheU9920‐GPBisnotuserserviceable.Donotattempttoopentheenclosure.Ifthisproduct

requiresservice,pleasecontacttheDavidClarkCo.Inc.CustomerServicedepartment:

• Phone: 800.298.6235

• E‐Mail:serviceWWW@DavidClark.com

• ByMail:CustomerService

DavidClarkCompany

360FranklinStreet

Worcester,MA01604



Ifnecessary,theU9920‐GPBmaybewipeddownwithamildsoapandwatermixture.Although

itisasealeddevicedesignedtowithstandsubmersioninwaterto1meter,donotunnecessarily

submersethisproductinwater.

Avoidstorageofthisproductindirectsunlightorhightemperatureenvironments.

FrequencyRange1920MHz‐1930MHz(U.S.andCanada)

1880MHz‐1900MHz(EU)

AverageRFPowerOutput4mW(100mWpeak)(U.S.andCanada)

10mW(250mWpeak)(EU)

Range300ft(100m)line‐of‐sight(nominal)

BatteryLife24hrscontinuoususe(nominal)

OperatingTemperature‐14°Fto113°F(‐10°Cto+45°C)

StorageTemperature‐4°Fto140°F(‐20°Cto+60°C)

PowerRequirements3.7V@100mAnominal

BatteryType3.7V2000mAhLi‐Polymer



RADIOANDTELEVISIONINTERFERENCE



ThisequipmenthasbeentestedandfoundtocomplywiththelimitsforaClassBdigitaldevice,

pursuanttoPart15oftheFCCrules.Theselimitsaredesignedtoprovidereasonableprotection

againstharmfulinterferenceinaresidentialinstallation.Thisequipmentgenerates,usesandcan



9of9

19541P‐41(02‐11)

radiateradiofrequencyenergyand,ifnotinstalledandusedinaccordancewiththeinstructions,

maycauseharmfulinterferencetoradiocommunications.However,thereisnoguaranteethat

interferencewillnotoccurinaparticularinstallation.Ifthisequipmentdoescauseharmful

interferencetoradioortelevisionreception,whichcanbedeterminedbyturningtheequipment

offandon,theuserisencouragedtotrytocorrecttheinterferencebyoneormoreofthe

followingmeasures:



‐Reorientorrelocatethereceivingantenna.

‐Increasetheseparationbetweentheequipmentandthereceiver.

‐Connecttheequipmentintoanoutletonacircuitdifferentfromthattowhichthereceiveris

connected.

‐Consultthedealeroranexperiencedradio/TVtechnicianforhelp.



Youmayalsofindhelpfulthefollowingbooklet,preparedbytheFCC:"HowtoIdentify

andResolveRadio‐TVInterferenceProblems."ThisbookletisavailablefromtheU.S.

GovernmentPrintingOffice,WashingtonD.C.20402.



*InordertomaintaincompliancewithFCCregulationsshieldedcablesmustbeusedwith

thisequipment.Operationwithnon‐approvedequipmentorunshieldedcablesislikelytoresult

ininterferencetoradio&televisionreception.



ThisdevicecomplieswithIndustryCanadalicence‐exemptRSSstandard(s).Operationissubject

tothefollowingtwoconditions:(1)thisdevicemaynotcauseinterference,and(2)thisdevice

mustacceptanyinterference,includinginterferencethatmaycauseundesiredoperationofthe

device.



ChangesormodificationsnotexpresslyapprovedbyDavidClarkCompany,Inc.couldvoidthe

users’authoritytooperatetheequipment.



USModels



DuetotheUPCSfrequenciesused,thisproductislicensedforoperationonlyintheUnitedStates

ofAmericaandCanada.



EUModels



DuetotheDECTfrequenciesused,thisproductislicensedforoperationonlyintheEuropean

Unioncountries.



David Clark U9920 AIRCRAFT PUSH BACK FIXED PART GATEWAY CONTAINING DECT TRANSCEIVER (UPCS) User Manual 40993G 01 U9920 GPB

David Clark Company Inc. AIRCRAFT PUSH BACK FIXED PART GATEWAY CONTAINING DECT TRANSCEIVER (UPCS) 40993G 01 U9920 GPB

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