Emerson AVOCENT User's Guide download pdf (Page 34)

Modes

Therearethreemodesavailableforusersconnectingtotransmittersandreceivers.ThemodesarePrivateonly,

SharedonlyandPrivateorShared.Thetransmittersettingistheauthorityifthereisconflictintheuseror

receiversetting.Forexample,ifthetransmitterissettoprivateonlyanduserand/orreceiverissettoshared

only,theuserwillnotbeabletoconnecttothetarget.ThePrivateorSharedmodeisthedefaultmodefor

devices.

Privatemode

InPrivateonlymode,nootherreceiverintheswitchingsystemcanswitchtothattargetdevice.IfPrivatemode

isnotavailable,theuserwillbenotifiedviaanonscreenmessage.Ifthetransmitterisconfiguredforprivate

modeonly,thesharemodeoptionwillbegrayedoutandonlyprivatemodewillbeavailable.

Sharemode

InSharemode,multipleuserscanconnecttotheaudioandvideoofatargetcomputeroverthenetworkand

arbitrateforcontrolofthatcomputer.Sharemodeisthedefaultmode,however,iftheuserhasbeengivenaccess

bytheadministratortheywillbeabletochooseprivatemodeviaaradiobutton.Thesharedonlymodeisthe

defaultmodeforusers.



PeripheralsTab

InordertounderstandthePeripheralsTab,youneedtofirstunderstandwhatanEDID(ExtendedDisplay

IdentificationData)is.EDIDsarebuiltintovideomonitorssothecomputerthatamonitorisconnectedtocan

querythemonitorforitscharacteristicsandcapabilities.Thecomputer’svideohardwarecanthendrivethe

monitoraccordingtotheresolutionandtimingthatthemonitorcanaccept.Thiswillaffect,forinstance,the

resolutionoftheoperatingsystem’sdesktopdisplay.

WhenaMatrixtransmitterisconnectedtoatargetcomputer,thetransmittertakestheplaceofarealmonitor,

anditmustactlikearealmonitorandpresentanEDIDtothecomputerwhenqueried.Atransmitterwithfactory

defaultsettingswillpresentagenericEDIDthatrepresentsafictitiousmonitorthatsupportsallofthe

resolutionsthatcanbehandledbytheMatrixsystem.

YoucanoverridethisdefaultEDID,bycapturinganEDIDfromanactualmonitorconnectedtoareceiver,and

pushthatEDIDdowntothetransmitter.Thenthecomputerattachedtothattransmitterwillactjustlikeit

wouldifthatmonitorweredirectlyconnectedtothecomputer.

Thereareseveralreasonswhyyoumightwanttopushamonitor’sEDIDdowntoatransmitter.Ifthemonitor

doesnotsupportthehighestresolutionreportedbythefactorydefaultEDID,thenyoucouldpushthemonitor’s

EDIDtothetransmitterinordertopreventthecomputer’soperatingsystemfromdrivingthevideooutputatthe

unsupportedresolution.Thiswillavoidrequiringthereceivertoscalethevideodowntotheresolutionrequired

bythemonitor.ThismayresultinacrispervideoimagefortheuserandwillallowaKVMsessiontobe

establishedmorequickly(sincethereceiverdoesnothavetochangeitsvideoresolutionandthemonitordoes

nothavetoresynchronize).Inasystemwhereallormostofthemonitorsarethesame,youmightwishtopush

thatmonitor’sEDIDtoallthetransmittersinordertoeliminatetheneedforanyvideoscalingwhenusers

establishconnectionstovarioustargets

ThePeripheralstabdisplaystheattributesthatmaybecapturedfromamonitorconnectedtoareceiver.Whena

monitorisconnectedtoareceiver,themonitor'sEDIDinformationcanbepulledintotheswitchandstored.The

26Avocent® Matrix High Performance KVM Switching System Installer/User Guide

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Emerson AVOCENT User's Guide Page 34