Specifications

Maxiva ULX Series
November 11, 2013
2‐31
888‐2628‐300 WARNING:Disconnectprimarypowerpriortoservicing.
Copyright©2013,HarrisBroadcast
2.16 M2XExciterSetup
SeeM2Xexcitermanualtosetexciterparameters.ThereareseveralversionsofM2Xmanualsdependingon
modulationtype.M2Xexcitermanualpartnumbersarelistedin
Section2.2onpage2‐1.
DVB‐TmodulationrequiresavalidtransportstreamtoallowRFoutput.Ifatransportstreamisnotavailablethen
thePRBStestmodecanbeactivatedviatheM2Xmodulatorscreens.
M2Xexciterstypicallyrequireon‐siteinstallationoftherealtimeclockbatterytomaintaintimeanddateonthe
systemshouldACpowerbedisrupted.RefertotheM2Xmanualfordetailedbatteryinstallationinstructions.
Note
Exciter A is always factory installed as the upper exciter unit. The optional exciter B is installed immedi-
ately above the TCU and below the top exciter unit (see layout photo Figure 1-1 on page 1-2).
2.17 RFInitialTurnOn
Caution
THE TRANSMITTER SHOULD BE INITIALLY POWERED INTO THE TEST
LOAD.
STEP 1 TurnonACmains1&2,PAContactor1&2,Control1&2,andExciter1&2
breakerslocatedonthetopleftbackofthetransmitter.Transmitterswith
fewerPAmoduleswillnothavetwoofeachbreaker.Itwilltakeafewminutes
forthe
TCUandexciterstoturnon.
STEP 2 LogintotheTCUbypressingtheLoginbuttonontheupperleftcornerofthe
screen.Instructionsforinitial loginaregivenin3.2.2onpage3‐2.The
transmittershouldremaininAutopowercontrolmodethroughoutthis
procedure.
STEP 3 PressOUPUTontheGUItoviewtheOutputscreen(seeFigure2‐16onpage
2‐32).Thisscreenshowstheforwardandreflectedpowersforthecabinetand
system.Systempoweristypicallycalibratedonsiteafterinitialturnon).The
ALC(autolevelcontrol)voltagelevelisalsoindicated.
STEP 4 Turndownthetransmitteroutputpowerlevelpriortoinitialstartup.Hold
downtheLOWERbuttonontheTCUcontrolpaneluntiltheSetCabFwdPwr
(W)value(seetheoutputscreenin
Figure2‐16onpage2‐32)reads500W.This
assuresthatthetransmitterwillinitiallycomeonatalowRFoutputlevel.
STEP 5 SwitchONtheIPA(driver)andPAcircuitbreakersIPAA‐BandPAPAslots1‐8
and11‐18(thenumberofPAmodulesdependsonthetransmittermodel)
insidethecabinetrearontheleftside(referto
Figure2‐11onpage2‐25).
STEP 6 PressthetransmitterONbutton.
STEP 7 Verifythatthecabinetandsystem(ifcalibrated)reflectedpowerlevels
displayed ontheOutputscreenarelow(typically<50W).