Specifications

Maxiva UAX
October 17, 2013
5‐13
888‐2693‐004 WARNING:Disconnectprimarypower priortoservicing.
Copyright©2013,HarrisBroadcast
STEP 4 RaisepowerandcalibrateatthefirstdBmlevel,thentheseconddBmlevel,
pertheinstructionsprovidedonthescreen.Asofthisprinting,theselevels
are4dBm(2.5mW)and20dBm(100mW).
STEP 5 Oncompletionofthefinalcalibrationprocedure,themenuwillpromptyou
toreconnectcables.Select“OK”onLCDscreenorSaveonwebbrowserto
exittheprocedure.Selectcanceltoterminatethecalibrationprocess.
STEP 6 Procedurecomplete.
5.4.6 CalibrateLPUOutput
LPUoutputreferstothelowpowerunittypeNconnectorlocatedontherearoftheLPU.TheLPUoutputis
relativelylinearwithfrequencysorecalibrationoftheLPUoutputistypicallynotrequiredinthefieldunlessthe
systemconfigurationisbeingchangedortheLPUisbeingre
placed.
Equipment and Tools Required:
• Directionalcouplerandaveragepowermeterorotherprecisionpowermeasurement
means.
STEP 1
Connectacalibratedcoupler,suchasaNarda3020,totheLPUoutput(RF
OU TPUT“N”connector)andconnectaloadofatleast100wattstothe
coupler.
STEP 2 OnthefrontscreenselectSETUP>SYSTEMSETTINGS>MODELNO.andthen
usetheupordownarrowstochangethemodelno.toUAX100.
STEP 3 PresstheLPUONbutton.
STEP 4 OnfrontscreenselectSETUP>XMTRPWRSETTINGS>POWERCALIBRATION
STEP 5 UsetheUPcursorkeytoselectLPU.
STEP 6 Connectthepowermetertoaforwardportonthecoupler.
STEP 7 RaisepowerandcalibrateatthefirstdBmlevelandthentheseconddBm
levelperinstructionsonthescreen.
STEP 8 SetthepowertothelowerdBmlevelandthentheupperdBmleveland
calibrateperinstructionsonthescreen.
STEP 9 Oncompletionofthefinalcalibrationprocedurethemenuwillpromptyou
toselect“Continue”toexittheprocedure.
STEP 10 PressLPUOFFbutton.
STEP 11 OnthefrontscreenselectSETUP>SYSTEMSETTINGS>MODELNO.andthen
usetheupordownarrowstochangethemodelno.tothepreviousvalue.
STEP 12 Removecouplerandsettransmitterbacktonormaloperatingcondition.
STEP 13 Endofprocedure.
5.4.7 CalibratingPABPower
PABpowerreferstotheforwardandreversepowerlevelsmeasuredattheoutputofoneormoreexternalpower
amplifierblocks(whereapplicable).
PABpo
werlevelscanbefoundintheLPULCDdisplaybynavigatingtoSTATUS>PABlock#>FWDPWRorREFPWR.
TheselevelscanalsobeseenonthewebbrowserbynavigatingtotheUAXHOME>POWERAMPSscreen.IfthePAB
powerlevelsdisplayeddonotag
reewithmeasuredlevels,thencalibrationisneeded.Theprocedurebelowmustbe
usedtocalibrateeachpoweramplifierblockinthesystem.
EquipmentandTo
olsRequired:
• Directionalcouplerandaveragepowermeterorotherprecisionpowermeasurementmeans.