Sky Connect DO-160 - Operation

1616-920-03
8/28/2014
Rev: B
1
3 OPERATION
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ThefollowingwillcoveroperationissuesontheMMUII.SeetheMMUIIOperator’s
GuideforacompletedescriptionofhowtooperatetheMMUII.
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TheMMUIIiscomputercontrolleddialerandveryflexibleinoperation.It
communicatestothetransceiveroveranRS‐232portorPOTSline.
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Thisunitcanbeprogrammedintheaircraftwithnewmessagesets.Ithasaneight
stepdimmingfeaturetothedisplay.
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TheMMUIIhas32Kofinternalmemory.Thisisenoughstoragefor1000phone
numbers/textmessagesifallthescreencharactersweretobefilled.
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TheMMUIIprovidesauserinterfacetoanexternaltransceiver,allowingauserto
controlvoicecallsandsend&receivetextSBDmessages.TheMMUIIcontainsa2‐
line,16characteralphanumericdisplayandarotaryknobwithapushbuttonaction.
ExternalI/OincludesanRS232port,andtwolampdrivers.
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TheMMUIIisloadedwitha“MessageSet”,whichissavedinFlashmemory.The
MessageSetcontainsconfigurationdata,thenamesandphonenumberchoicesfor
voicedialing,andthecompletesetoftextmessagesthatcanbeselectedbytheuser
fortransmissiontotheground.
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TheMessageSetmaybeloadedonthegroundviatheMMU’sRS232port.
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TheMMUIIcommunicateswiththemapapplicationviabinarySBDmessages.
MobileTerminated(“MT”)messagesaresentfromthegroundtotheMMUII
(uplink),andMobileOriginated(“MO”)messagesaresentfromtheMMUIItothe
ground(downlink).ThesemessagesaresenttoandfromtheSkyConnectTracker
Map.Atreleaseofthistext,noothermappingsystemhastheabilitytomakeuseof
textmessagingtoorfromtheaircraft.
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MSETManage‐PhonenumbersandmessagesarecreatedfortheMMUIIbyusinga
SkyConnectprogramcalledMSETManage.Thisprogramwillcreateamessageset
ofphonenumbersandcannedmessagestobeloadedintotheMMUIIviaRS‐232
connectionorWi‐Ficonnection.Aconnectorshouldbeinstalledasclosetotheback
oftheMMUIIaspractical,toallowtheRS‐232portbetweenthetransceiverandthe
MMUIItobebroken,andallowtheconnectionofaPCforthispurpose.
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TheMMUIIsupportsdrivingtwoannunciatorstoindicatewhenacallormessageis