User Manual

Table Of Contents

RFCommissioning

Turnonthespectrumanalyzer,makesureitisconnectedtotherightportontherightBIUandthenfindthe

frequency.Areasonablespanis1MHzandthereceiverbandwidthcanbesetto30kHzorsimilar.Usethemarkerto

measurethepeakofthesignal.Thengotothene

xtscreenontheremoteunit,theRFStatusscreen.

WhatwearelookingforhereistheTesttoneLevel.Notethisdownaswell,nexttothefrequencyofthetesttone

younotedearlier.

Thench

eckyourspectrumanalyzer.Assumingyourtesttonelevelis‐62,6dBmasinthisexampleyourspectrum

analyzermayshow‐58,2dBm.CalculatingthenetgainbetweentheRUandtheBIUwillthenyield‐58,2‐‐62,5=4,3

dB.Subtractthecouplerbetweenthe BIUandtheradiobasestat

ionwhichinthisexamplewas15dBandweget‐

19,3dBasournetgain.

Wewa

nted‐10dBsowehave9,3dBtoolowgain.Weshouldthenincreasethegainandthebestplacetodothis

wouldbeintheremoteunitbysettingthegainat35+9,3=44,3whichwewillroundto44dB.

Thatup

linkisnowfinishedandwewi llrepeatthesettingsforallofouruplink,oneatatime.

CAUTION

TurnOffTestTone

Donotforgettoturnoffthetesttonewhenyouaredonewithyouruplink.Bettercheckoneextratime.Theywill

otherwiseinterferewiththenormaloperationofthesystembycausingnoisetothebasestation.