Specifications

4‐1
888‐2628‐300 WARNING:Disconnectprimarypowerpriortoservicing.
Copyright©2013,HarrisBroadcast
Maxiva ULX Series
November 11, 2013
Section-4 Theory
4
4.1 Introduction
ThissectioncontainsdetaileddescriptionsoftheMaxivaULXSeriestransmitter,itsinternalsub‐assembliesandany
pertinentinformationregardingtheexternalassembliessuchasthepumpmoduleandheatexchanger.
Therestofthissectionwillbebrokenupinto4maintopics:
• ControlSystem&TCU
• RFSystem
• PowerSupplies
• CoolingSystem
4.1.1 ActiveLogicSymbols
Eachlogicsignalhasanactiveandinactivestateandauniquenamewithinthesystem.Todifferentiatebetween
activehighoractivelowlogicstatesontheschematics,aforwardslash(/)isplacedinfrontofanactiveLOWsignal
namesuchas/RF_MUTE.Thismeansthatifthis
logiclineispulledlow,thetransmitt erRFwillbemuted.Bythe
samelogic,thesignalRF_MUTE_LED(anactivehighsignalwithnoforwardslash)willturnontheRFmuteLEDwhen
itgoeshigh.
Insomecases,alogicsignalmayactasatogglewithbothstatesactive,aswiththesignal/ON_OFF,whereLOW=
ONandaHIGH=OFF.IfthissignalisinverteditwouldbeON_/OFF.
4.2 BlockDiagramDescriptions
SeeSection1,Introduction,inthismanualforabasictransmitteroverview,modelnumbers,poweroutputsand
blockdiagramdescriptions.Figure4‐1givesasimplifiedtransmitterblockdiagram.Thereisalsoamoredetailed
overalltransmitterblockdiagramatthefrontoftheschematicpackagethatcomeswiththetransmitter.
Asastandardpractice,thefirstpageofaPC(printedcircuit)boardschematicisablockdiagramofthatboard.
Figure 4-1 Maxiva ULX Cabinet Block Diagram
EX 1
EX 2
MOV/AC
SAMPLING
TCU

GUI
RF
SWITCH
PS AND
COOLING
MONITOR
RF
MONITORING
÷
DIR
COUPLER
PUMP CONTROL
INTERLOCKS
PARALLEL
REMOTE
TO PUMP MODULE
PA Bus
CABINET
FLOW
METER
INLET /
OUTLET
TEMP
LEAK
DETECTOR
I/O PANEL
Transmitter
Main Cabinet
PA
INTERFACE
AC
Distribution Bus
Driver-PAs
16 PAs
CAN Bus
Exciter CAN Bus
TO OTHER
CABINETS
N+1 CAN Bus
TO N+1
CONTROLLER
INTERLOCKS
PARALLEL
CONTROL
Front Panel
Buttons
System /CAN Bus
Ethernet
Ethernet
Ethernet
Web
Remote /
Monitoring
L1
L2
L3
FANS
Pre-Drivers