Specifications

Maxiva ULX Series

November 11, 2013

5‐7

888‐2628‐300 WARNING:Disconnectprimarypowerpriortoservicing.

5.4 PAModulePhasing

PhasingofthePAmodule sistightl ycontrolledatthefactory .Nopha singofthemodule s isrequir e dinthefield.PA

modulesandIPA(drivermodules,usedintransmitte rc abine tswith10to16PAmodule s)canbeuse dinanylocation

withoutre‐pha sing.Modified IPAmodule s,usedin

PAcabinet swith8orfewerPAmodules ,donotrequirephasing

eitherbutcanonlybeusedinIPAmoduleslots.

Note

Phasing between cabinets is required to minimize cabinet combiner reject power and it is accomplished

via the GUI screen. Cabinet phase and gain is controlled by adjusting the relative phase and RF output

levels of each cabinet using the preamplifiers. See

Section 3.7.2 on page 3-18 and Figure 3-18 on page 3-

18 to view adjustment screen.

5.5 PA&IPAModuleComponentID

BeforeattemptingPAorIPAmodulerepairsinthefielditisimportanttoproperlyidentifythefaultycomponents.



Figure 5-4 PA/IPA Module Pallet and Power Supply Numbering

Figure5‐4givesthepowersupplyandpalletidentificationnumbersforPAandunmodifiedIPAmodules.

ComponentsthatareremovedfrommodifiedIPAmodulesaredenotedwithasterisks.ModifiedIPAmodulesare

usedintransmitterswitheightorlessPAmodules.

ThetestconnectoronthefrontofthePAorIPAmodulecanbeusedtodeterminewhichpalletorpowersupplyhas

failed.Anoptionalhandheldmetercanbeattachedtotheconnectortodisplaythestatusandfaultinformation

outlinedin

Table5‐2.Iftheoptionalmeterisnotavailableamultimetercanbeusedtomeasurevoltagesonthe

connectorpins.Thenormalmeasuredvoltagesaregiveninthefollowingtableinparenthesis.Thesevoltagevalues

assumethatthemoduleisenabledbutnoRFinputisapplied.