User's Manual

RFCommissioning
112
Practical approach
Nowthatweknowwhatweshouldhavewecaneasilysetthesystemup.Youneedaspectrumanalyzertodothis
anditiseasiesttoconnectitintotheBIUport.Rememberthatwhenyoumeasurehere,thesignalshouldalsogo
throughtheBTScouplerbeforeitreachestheba
sestationreceiverport.Thereforeyoushouldexpecttoreada
valuethatis
Yourexpectedga
in+thelossinyourcoupler
Ifyouwa
ntanetgainof‐5dBandyouhavea15dBcoupler,youshouldreadanetgainof+10ontheBIUport.This
isnowwhatwearegoingtouseinthefollowingexample.

















!





 


"#
Turn on the RF
ConnecttotheBIUandturnontheRF
.Settheattenuatorinthemediumrangefortheuplinkthatyouare
measuring.Thisallowsyoulatertoadjustitupanddownasnecessarytogetthecorrectgainfortheuplinkchain.
Settingthemto10dBisagoodidea.DLsuperv isioncanbeleftasisfornowandalsoDLattenuationwhichwewill
setuplater.
ConnecttotheFOIcar
dandselectOptoandRF–RFConfigandsetitupaccordingtoyourFiber‐DAScalculator
settings.DonotforgettoturnRFon.