Sharp SD-AT1000W Spécifications télécharger pdf (Page 25)

Maxiva UAX

October 17, 2013

1‐11

888‐2693‐004 WARNING:Disconnectprimarypower priortoservicing.

1.7 TransmitterAccessories

Inadditiontothesedevices,variousadd‐onoptionsareavailableandmaybepresentinaUAXtransmittersystem.

Sincetheseaccessoriesdonotsignificantlychangethefunctioningofthecoretransmitteritself,itisunderstoodthat

thismanualaddressescustomizedtransmitterconfigurationsthatmaycontainoneormoreofthe

seoptions.

Inthecas

eofarelativelyhighlevelofcustomizati on,thismanualmayalsobeaccompaniedbyasupplemental

“customer‐special”manual.Inthecasewhereconflictinginformationispresentedinthetwomanuals,the

informationgivenbythecustomer‐specialmanualsupersedesanyinformationcontainedinthismanual.

1.7.1 RackIntegration

Typically,transmittersthatuseasingle LPUorasingleLPU+PABcombocanbesuppliedas19”widerackmount

assemblies(36"minimumdepth),andequipmentracksareofferedasoptions.Digitaltransmittersthatinclude

multiplePABsordualLPUsaretypicallyorderedwithintegratedrack(s).

1.7.2 ACDistribution&SignalMonitorChassis

Figure 1-9 AC Distribution Panel

Acu

stomizedACdistributionpanelissometimessuppliedasanoptiontoprovidein‐rackACmainsdistributionwith

frontpanelcircuitbreakerswitching.Thischassismayalsofeatureasetoffront‐panelSMAconnectorsforsignal

monitoringand/oranemergencyoffbutton.TheoptionalOFFbuttonontheACdi

stributionpanelshutsdownthe

transmitterwhenpressed(RFoutputpowergoestozeroandtherearblowersshutoff).TheOFFswitchalso

containsasecondsetofcontacts(normalopen,butclosedwhentheswitchisdepressed)thatcanbeusedforother

customersuppliedfunctionsifdesired.

Ifsupplie

d,theACdistributionpanelcanbeusedwithanoptionaluninteruptablepowersupply(UPS)byremovinga

seriesofjumpersinthepanel.TheoptionalexternalUPSwillsupplypowertotheLPUandTCU(ifpresent)inthe

eventofpowerfailure.TheuseoftheexternalUPSminimiz

essystemstart‐uptimeintheeventofpowerfailuresby

keepingcriticaloscillatorandmicroprocessorcircuitsactiveatalltimes.

1.7.3 DuctedAirSystem

Acustomizedairinputplenumissometimessuppliedtoallowthetransmittertodrawinputairfromadedicated

ductinsteadofthetransmitterroomambientair.Theairinputplenumhasatransparentfrontdoortopermit

visualizationofthetransmittercontrolpanelstatuswhilethedoorisclosed.

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