David Clark U9922 3800 GATEWAY CONTAINING DECT TRANSCEIVER (UPCS) User Manual 40995G 01 U9922 G38

David Clark Company Inc. 3800 GATEWAY CONTAINING DECT TRANSCEIVER (UPCS) 40995G 01 U9922 G38

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U9922-G38

(P/N: 40995G-01)

3800 Gateway

USER MANUAL

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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U9922‐G38(40995G‐01)3800Gatewayisafixed‐mountedwirelesscommunicationdevice

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

(40992G‐02)WirelessBeltStationsbecomespartofawirelessintercomsystem.TheU9922‐

G38providescommunicationforuptofourusersaswellasaninterfacetoanexistingDavid

ClarkModel3800wiredintercomsystem.Additionally,theU9922‐G38canbeusedasastand‐

alonewirelessintercomgatewaywithtwo‐wayradiointerface.Uptofourbeltstationscanbe

connectedtoonegateway.

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Radio

Input

Status LED

VOLUME LINK

Antenna

System

Input R

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Figure1:OverviewofGateway

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IntercomInterface

TheU9922‐G38canbeconfiguredinoneoftwoways:3800interfaceandstand‐alone.

3800Interface

Thisconfigurationaddswirelesscapabilitytoanexisting3800wiredintercomsystemand

canreplaceaU3811orU3815radiointerfacemodule(see3800systemdocumentation

forfurtherdetails.)Inthisway,allwiredandwirelessusersmaycommunicatewitheach

otheraswellastalkoverandlistentoatwo‐wayradio.AC38‐xxsystemcableand

optionalC3821radiointerfacecablearerequiredforthisconfiguration.

Stand‐alone

Stand‐aloneconfigurationcreatesanad‐hocwirelessintercomandaddsaccesstoatwo‐

wayradio.Thisconfigurationdoesnotconnecttoa3800wiredintercomsystem.AC99‐

22PW(18748G‐24)powercableandoptionalC3821radiointerfacecablearerequiredfor

thisconfiguration.

Antenna

TheU9922‐G38hastwoexternalantennaconnectionsandissuppliedwithonewhipstyle

antenna.Inmostapplicationsasinglewhipantennaissufficient.Howevertheoptionalremote

antennakit(P/N:40688G‐93)isavailableshouldmorerangebedesired.Inthiscase,we

recommendkeepingonewhipantennaconnecteddirectlytotheU9922‐G38androutingthe

remoteantennasomewhereelse(suchasontheroofofavehicle).

Chooseanopen,clearlocationfortheremoteantennaandroutethecoaxialcableawayfrom

anybusyareas,preferablybehindpanelsorinconduits.

Thisdevicehasbeendesignedtooperatewiththeantennaslistedbelow,andhavinga

maximumgainof3dB.Antennasnotincludedinthislistorhavingagaingreaterthan3dBare

strictlyprohibitedforusewiththisdevice.Therequiredantennaimpedanceis50ohms.

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Acceptableantennasforusewiththisproduct:

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• WhipAntenna(P/N:40688G‐92)

• RemoteAntennaKit(P/N:40688G‐93)

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

2. Simultaneously(within1‐2sec)pressandreleasetheLINKbuttonontheU9922‐G38and

thebeltstationtolinkwith.

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

successfulclose‐link.

4. UponsuccessfullinktheU9922‐G38willattempttoestablishaconnectionwiththebelt

station.

5. 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LINK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Linking/ConnectioninProgress

OrangeSolidPTTasserted

GreenSlowConnected(patternindicates

numberofbeltstationsconnected)

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Communication

AllconnectedbeltstationswillbeabletocommunicatewitheachotherthroughtheU9922‐G38

whileinrange(andpertheVOXsettingsoneachVOXbeltstation.)Additionally,allbeltstation

userswillhavecommunicationovertheintercom.Ifatwo‐wayradioisinstalledtotheU9922‐

G38,pressingthePTTbuttononaVOXbeltstationwillallowtheusertotransmitoverthe

system’stwo‐wayradio.PressingthePTToverridestheVOXsettingonaVOXbeltstation.

MultiplebeltstationusersmayPTTandthusspeakoverthetwo‐wayradiosimultaneously.For

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



Tip:

WirelessuserswhoarenotpressingPTTwhileanotherwirelessuserispressingPTTwill

notbeheardonthewiredintercomwhilethePTTremainspressed.



IntercomLevelAdjustment

Audiolevelscanvarybetweenintercoms,mainlyduetothesystemlevelsettingonthewired

intercom.Tocompensateforthis,theU9922‐G38hastheabilitytoadjustitsreceivelevelfrom

theintercomusingtheVolumeknob(seeFigure1).Turningthisknobwillincreaseordecrease

theaudiolevelcomingfromthewiredintercomintothegateway.Performthisadjustmentto

obtainoptimumperformance.

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IntercomLevelAdjustmentProcedure

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1. ConnectatleastonebeltstationtotheU9922‐G38gatewayandensuresidetoneis

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

2. BeginspeakingandslowlyturntheVolumeknobontheU9922‐G38clockwiseuntil

youhearanechoofyourownvoice.

3. ContinuespeakingandturntheVolumeknobcounter‐clockwiseuntiltheechostops.

4. Youmaywishtoverifycommunicationwithsomeonehard‐wiredtotheintercom.



RadioLevelAdjustment

Audiolevelstoandfromatwo‐wayradiocanalsovarybetweenradiomodelsand

manufacturers.ToadjusttheU9922‐G38foraparticularradio,followtheproceduresbelow.

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6of9

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RadioTransmitLevelAdjustmentProcedure

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Note:Aradioservicemonitorisrecommendedforthisadjustment.

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1. ConnectatleastonebeltstationtotheU9922‐G38gatewayandensuresidetoneis

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

2. OpenthecoveroftheU9922‐G38andfindthelargesilverknob.

3. PressandholdthePTTandspeakclearlyandloudlyintothemicrophone.

4. Slowlyturntheknobuntiltheradioservicemonitorreads4.0‐4.5kHzdeviation.

a. Clockwisetoincreaselevel;counter‐clockwisetodecrease



RadioReceiveLevelAdjustmentProcedure

1. ConnectatleastonebeltstationtotheU9922‐G38gatewayandensureside‐toneis

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

2. OpenthecoveroftheU9922‐G38andfindthelargesilverknob.

3. Tunetheradiotoacontinuoustransmission(suchasNWS)ortransmitatestsignal

fromanotherradio.

4. Adjustthevolumecontrolontheradiotoalevelslightlyhigherthantypical.

5. Slowlyturntheknobuntilyouhearaloudandclearsignalonthewirelessintercom.

a. Clockwisetoincreaselevel;counter‐clockwisetodecrease



Range

Therangeofabeltstationandagatewaycanbeupto300ft(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.



Insomecircumstancesitmaybenecessaryto“purge”theU9922‐G38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.



SmartPurge

AsmartpurgeisthepurgemethodemployedfortheU9922‐G38,inwhichonlyunwantedlinks

areremovedfromthegateway.Whenthisprocedureiscomplete,onlybeltstationsthatare

connectedtothegatewayremainlinked.Allotherbeltstationlinkswillhavebeenremoved(see

thebeltstationUserManualfortheindividualbeltstationpurgingprocedurewhenremaining

linkpurgingmaybenecessary.)

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7of9



SmartPurgeprocedure



1. Ensuregatewayispoweredonandfunctioning.

2. Disconnectallbeltstationstobepurged(poweroffthebeltstations).

3. VerifythenumberofgreenLEDflashesonthegatewaymatchesthenumberof

beltstationstobekeptlinked.

4. PressandholdLINKbuttononthegatewayfor30secondsuntilLEDquickly

flashesred.

5. ReleaseLINKbutton.



Table2:Troubleshooting

ProblemSolution

GatewaywillnotturnonReviewInstallationprocedure

Ensurewiringiscorrect.

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

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

eachother

TryaSmartPurge

Cannotspeakovertwo‐way

radio

PTTnotpressed

NoradioconnectedtoU9922‐G38

• Systemcable(C38‐xx;numberafterdashindicateslengthinfeet)

• PowerCable(C99‐22PW,P/N:18748G‐24)

• RadioInterfaceCable(C3821,P/N:18747G‐06)

• WhipAntenna(P/N:40688G‐92)

• RemoteAntennaKit(P/N:40688G‐93)



8of9



TheU9922‐G38isnotuserserviceable.Donotattempttoopentheenclosure(unlessadjusting

theradiolevelpertheproceduresnotedinthismanual.)Ifthisproductrequiresservice,please

contacttheDavidClark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U9922‐G38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)

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8to32VDC



9of9



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

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.



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

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



ThisequipmentcomplieswithFCCradiationexposurelimitssetforthforanuncontrolled

environment.Thisequipmentshouldbeinstalledandoperatedwithaminimumdistanceof20

centimeters(8inches)betweentheradiator(antenna)andyourbody.Thistransmittermustnot

beco‐locatedoroperatinginconjunctionwithanyotherantennaortransmitter.



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

ofAmericaandCanada.

David Clark U9922 3800 GATEWAY CONTAINING DECT TRANSCEIVER (UPCS) User Manual 40995G 01 U9922 G38

David Clark Company Inc. 3800 GATEWAY CONTAINING DECT TRANSCEIVER (UPCS) 40995G 01 U9922 G38

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