User manual

MFLUserManual 
rev.02
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
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CONFIGURATIONEXAMPLE:REMOTEDIVERSITYWITHDOUBLEFAILSAFEREDUNDANCY
AboveanexampleofremotediversityreceptionwithMFL‐T*T*intheremotesiteandMFL‐R*R*inlocalsite(i.e.OBvanormain
studiofacility).RFsignalonremotesitearereceivedbyacoupleofantennas(MFLcanprovideboosterpowerifneeded).Thesignal
isfilteredusing
theinternalwide‐bandtunablefilter(25MHzover400‐800switching‐bandwidth),optimizedwithagaincontroland
modulated using the LASERS. Thanks to CWDM (Coarse Wavelength Division Multiplexing) technology all optical signals are
combinedinasinglefiber.Inthiswaywecanoptimizethefiberbutalso
itmakesveryeasytohaveasystemtotallyredundant.
Failsafeswitches(bothinMFL‐T*T*andMFL‐R*R*)allowRFre‐routingifafaulthappens(i.e.nopowersupply,noRFpowerorno
opticalpower).AllRFandopticalsignalsarethenre‐routedontheredundantlinks
automatically(inthiscasearedundantfiberand
2redundantMFLs)!
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Optical Power
Meter
M
Gain
Failsafe
Switch
RF-OUT
RF-IN (Failsafe)
Optical
140 MHz
Optical Power
Meter
M
Gain
Failsafe
Switch
RF-OUT
RF-IN (Failsafe)
Optical
140 MHz
RF Power
Meter
Gain
Failsafe
Switch
Laser
External Filter
(Failsafe)
Antenna
Booster
(+12VDC)
Tunable
RF-IN
140 MHz
RX Antenna
Link
IFB-IEM
Link
IN OUT
RF Power
Meter
Gain
Failsafe
Switch
Laser
External Filter
(Failsafe)
Antenna
Booster
(+12VDC)
Tunable
RF-IN
140 MHz
RX Antenna
Link
IFB-IEM
Link
IN OUT
Remote
Diversity
Reception
Local
Diversity
Reception
Example of a redundancy link (1-fault tolerance) with automatic failsafe switches
single-mode
splitted
output
splitted
output
MFL-T*T*
wideband optical link
MFL-T*T* (redundant link)
MFL-R*R*
wideband optical link
MFL-R*R* (redundant link)
MTK283
matrix combiner
MRK960
wideband receiver
Lin
Lin
F
A
BA
B
Optical Mux/Demux
option
option
Optical Mux/Demux
#51
#53
#55
#57
#51
#53
#55
#57
CWDM
CH Frequency
#51  = 1510nm
#53  = 1530nm
#55  = 1550nm
#57  = 1570nm
CWDM
CH Frequency
#51  = 1510nm
#53  = 1530nm
#55  = 1550nm
#57  = 1570nm

RF
IN

RF
IN

RF
OUT

RF
OUT
TX.51
Mode:ANT
TX.55
Mode:ANT
RX.51
Mode:ANT
RX.55
Mode:ANT
A
T