User's Manual Part 2

FiberDistributedAntennaSystem(FiberDAS)
87
FOR Opto Gain and Attenuation Settings
Figure 98
1
2
FOR Opto Gain Settings
 Asettingof+20indicatesnoattenuationsoFORwillhave+20dBgain(+20dBgainminus0dB
attenuation).
 Asettingof+1
0willhave10ofattenuationsothisstagewillhave10dBmofgain(+20dBgainminus
10dBofattenuation).
 Asettingof0
willhave20dBofattenuationsothisstagewillhaveunitygain(+20dBgainminus
20dBofattenuation).
 Ase
ttingof‐10wi
llhave30dBofattenuationsothisstagewillhave10dBofloss(+20dBgainminus
30dBofattenuation).
 Asettingof‐20
willhave40dBofattenuationsothisstagewillhave20dBofloss(+20dBgainminus
40dBofattenuation).
 Aset
tingof+20
willhavefullgainof+20dBm.
 Asettingof+1
0willhave+10dBgain.
 Asettingof0
willhavenogain.
 Factoryde
faultshouldbeusedunlesshighlossinfiber.NotethatchangesinGainuplinkwill
requirechangesintheFORULALClevel.
Item Description
1
FORga
ininthedownlinkpath.Rangeistypicallyfrom‐20to+20.FORdownlinkpathhasinherent/rawgainof
+20dB(FMto2600MHz).
2
FOR
gainintheuplinkpath.Rangeistypicallyfrom0to+20dBm(FMto2600MHz).