[Digitare il testo] MFL – WIDEBAND OPTICAL LINK
Key Features
* LOW NOISE DESIGN to allow great coverage when used to remote receiving antennas HIGH INTERFERENCE IMMUNITY thanks to high IIP3 design and a control/compensation of gain EASY TO USE thanks to integrated RF/optical power meter and optical power compensation REAL‐TIME CLOCK with a backed‐up static RAM to monitor and record internal RF levels and service data (i.e. laser life time) TX UNIT (remote RF reception, i.e. diversity antennas): MFL units can incorporate a digitally tuned filter (25 MHz bandwidth, center frequency tunable over 404‐788 MHz). It can route RF through an external filter or to additional receiver (redundancy) to easily implement a failsafe configuration that can switch on a redundant receiver or transmitter if any fault is detected It automatically monitors RF levels and intervenes to avoid fiber saturation RX UNIT (RF transmission, i.e. single‐frequency master/slave areas) It can route an IFB high power signal to transmit locally and send low power IFB carrier over fiber to slave units When it is working along with a MTK952MS in slave configuration, the fiber loss is automatically recovered and the units increase the gain so that the transmitter power equals the target level (measured with an SWR meter integrated into the MTK952MS) REMOTE MONITOR/CONTROL thanks to a data link on Ethernet 10/100 Base Tx RF INPUT/OUTPUT: ‐ 4 N connector female 50Ω with switchable 12V boosting power (only on transmitter modules) ‐ 2 BNC‐F 50Ω each optical transmitter module, failsafe option or external RF filter ‐ 1 BNC‐F 50Ω each optical receiver module, failsafe option OPTICAL INPUT/OUTPUT: 5 connectors SC‐APC type DATA LINK: RJ45: 10/100 Base TX POWER SUPPLY: AC INPUT: 90V‐264V~, 47‐63 Hz, 2A fused, max 60 Watts DC INPUT: 10‐28Vdc (max 5A), [XLR‐4M] VDC‐pin 4 / GND‐pin 1 / NC‐pin 2 / NC‐pin 3 Description
MFL provides wideband optical link for up to 4 RF channels combined in a single fiber thanks to CWDM technology. It is designed to allow for a flexible and modular configuration thanks to a mainboard that can be fitted with up to 4 plug‐in boards that can be any combination of two types: 
TX: Laser optical transmitter, (CDWM) plug‐in board  RX: Optical‐receiver plug‐in board Example: MFL‐TTTT is 4 laser transmitter unit that works with a MFL‐RRRR with 4 channel receiver. Other configurations are also possible like MFL‐RR / MFL‐TT or a mixed like a MFL‐RRTT with both receiver and transmitter channels. * The images are purely for information. This represent one of the possible configurations
MFL – WIDEBAND OPTICAL LINK
[Digitare il testo] SystemOverview
The system is composed by a MFL‐BASE (1U rack frame) and some optional/modular boards to build the desired configuration. MFL‐BASE can have up to 4 optical modules that can be either TX or RX (factory installed) to adapt the unit to several configurations. To simplify the usage we give a name of the final configuration that easy identify the CWDM channels and a color code for the RF connectors (N type). We use as default 4 laser wavelength although the CWDM standard can allow to use much more with a 20nm wavelength separation: ‐
Channel 51 short name for wavelength 1510 nm ‐
Channel 53 short name for wavelength 1530 nm ‐
Channel 55 short name for wavelength 1550 nm ‐
Channel 57 short name for wavelength 1570 nm Wavelength and Color Coding: Channel
Wavelength
Color Identifier
51 53 55 57 Wavelength 1510 nm laser, single mode Wavelength 1530 nm laser, single mode Wavelength 1550 nm laser, single mode Wavelength 1570 nm laser, single mode Blue Green Yellow Orange For example: NAME (i.e.) Ch. 51 Ch. 53 MFL‐TTRR T T ‐
MFL‐TTRR has 2 Tx on ch.51/53and 2 Rx on ch 55/57 MFL‐RRTT R R ‐
MFL‐RRTT has 2 Rx on ch.51/53 & and 2 Tx on ch 55/57 MFL‐TT** T T ‐
MFL‐TT** has 2 Tx on ch.51/53 and no module on ch 55/57 MFL‐RR** R R ‐
MFL‐RR** has 2 Rx on ch.51/53 and no module on ch 55/57 Following the main code and option that can build up a MFL system: # Code Description
1 MFL‐BASE WIDEBAND RF OVER FIBER MAINBOARD 19' 1U Rack units , aluminium frame Oled display ‐ Ethernet ‐ failsafe switch ‐ realtime clock AC Powered 230V 2 MFL‐RX Optical RX module for MFL (CWDM) 3 MFL‐TX Laser TX module for MFL (CWDM) 4 MFL‐DC Insulated DC power with battery monitor (10÷28Vdc)
Optional 5 MFL‐DMX Module Mux/Demux for 1:4 CWDM 6 MFL‐BF1 RF filter 25MHz tuning range over 404÷788 MHz ⑤
⑥
⑥
* ②
②
②
②
③
③
③
③
④
①
* The images are purely for information. This represent one of the possible configurations
Ch. 55 R T ‐ ‐ Ch. 57 R T ‐ ‐ Max 4 modules (between TX and RX) MFL – WIDEBAND OPTICAL LINK
[Digitare il testo] Configurationexample:RemoteDiversitywithdoublefailsaferedundancy
Remote
Diversity
Reception
B
Local
Diversity
Reception
MFL-T*T*
wideband optical link
Antenna
Booster
(+12VDC)
#53
IFB-IEM
Link
Antenna
Booster
(+12VDC)
Laser
External Filter
(Failsafe)
IN
#55
#57
OUT
Optical Mux/Demux
#51
Optical Power
Meter
Gain
#55
Failsafe
Switch
RX.51 Mode: ANT #57
Optical Power
Meter
option
RX Antenna
Gain
Link
RF-OUT
RF
OUT
F
Failsafe
Switch
Optical
option
140 MHz
140 MHz
#53
RF Power
Meter
RF-IN
RF-IN (Failsafe)
M
#51
RF-IN (Failsafe)
RX.55 Mode: ANT M
Gain
140 MHz
AT MTK283
matrix combiner
RF
OUT
RF Power
Meter
RX Antenna
Gain
Link
Lin
Optical Mux/Demux
OUT
Tunable
RF
IN
MFL-R*R*
wideband optical link
single-mode
140 MHz
RF-IN
Failsafe
Switch
TX.55 Mode: ANT B
External Filter
(Failsafe)
IN
TX.51 Mode: ANT RF
IN
A
A
MRK960
wideband receiver
RF-OUT
Tunable
CWDM
CH Frequency
#51
= 1510nm
#53
= 1530nm
#55
= 1550nm
#57
= 1570nm
IFB-IEM
Link
Laser
MFL-T*T* (redundant link)
splitted
output
splitted
output
Optical
Failsafe
Switch
CWDM
CH Frequency
#51
= 1510nm
#53
= 1530nm
#55
= 1550nm
#57
= 1570nm
MFL-R*R* (redundant link)
Example of a redundancy link (1-fault tolerance) with automatic failsafe switches
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)! MFL – WIDEBAND OPTICAL LINK
[Digitare il testo] Configurationexample:RemoteDiversityandIFBAreawithdoublefailsaferedundancy
A
Local
Diversity
Reception
Remote
Diversity
Reception
B
A
B
single-mode
optical fiber
MFL-TTTT
wideband optical link
MFL-RRRR
wideband optical link
OUT
RF Power
Meter
RF
IN
Failsafe
Switch
IFB-IEM
Link
140 MHz
RX.51 Mode: ANT RF-OUT
OUT
Optical Power
Meter
RF Power
Meter
140 MHz
RF-IN (Failsafe)
RF
OUT
M
RX Antenna
Link
Gain
Tunable
Laser
External Filter
(Failsafe)
IN
#51
#53
OUT
RF Power
Meter
#55
#57
140 MHz
RF-IN
RX Antenna
Gain
Link
Failsafe
Switch
Mux/Demux Optical Multiplexer
Gain
Optical Mux/Demux Multiplexer
Failsafe
Switch
#51
#53
140 MHz
Failsafe
Switch
Optical
Optical Power
Meter
#55
RF-OUT
RX.53 Mode: ANT RF-IN (Failsafe)
M
Gain
#57
140 MHz
RF-OUT
RF
OUT
Failsafe
Switch
Optical
Laser
IN
option
IFB-IEM
Link
Antenna
Booster
(+12VDC)
option
Tunable
External Filter
(Failsafe)
OUT
RF Power
Meter
splitted
output
splitted
output
Optical Power
Meter
140 MHz
RF
IN
RF-IN (Failsafe)
RF
OUT
M
RF-IN
RX Antenna
Gain
Link
Failsafe
Switch
Gain
Tunable
IFB-IEM
Link
Laser
CWDM
CH Frequency
= 1510nm
#51
#53
= 1530nm
#55
= 1550nm
#57
= 1570nm
CWDM
CH Frequency
#51
= 1510nm
#53
= 1530nm
#55
= 1550nm
#57
= 1570nm
MRK960 wideband receiver
B Remote Intercom Reception
MAT283 matrix combiner
A TX.57 Mode: ANT Optical
RF-IN
Antenna
Booster
(+12VDC)
RF
IN
Failsafe
Switch
Laser
Optical
140 MHz
RF-OUT
Failsafe
Switch
Local Intercom Reception
TX.55 Mode: ANT RF
OUT
RF
IN
IN
IFB-IEM
Link
Gain
External Filter
(Failsafe)
Antenna
Booster
(+12VDC)
B TX.53 Mode: ANT RF-IN (Failsafe)
M
RX Antenna
Gain
Link
Tunable
Optical Power
Meter
140 MHz
RF-IN
A IN
TX.51 Mode: ANT External Filter
(Failsafe)
Antenna
Booster
(+12VDC)
MFL-TTTT (redundant link)
Example of a redundancy link (1-fault tolerance) with automatic failsafe switches
MFL-RRRR (redundant link)
Above an example of remote diversity reception using all of 4 plug‐in modules available: MFL‐TTTT in the remote site and MFL‐RRRR in local site (i.e. OB van or main studio facility). In this example a remote reception for Microphones and Intercoms: one single mode fiber carries 4 RF channels and another one provides 1‐fault tolerance on all active parts if needed! RX.55 Mode: ANT RX.57 Mode: ANT MFL – WIDEBAND OPTICAL LINK
[Digitare il testo] Configurationexample:RemoteDiversityandIFBArea
A
Remote
Diversity
Reception
B
Local
Diversity
Reception
A
B
single-mode
MFL-TTRR
wideband optical link
External Filter
(Failsafe)
IN
RF Power
Meter
IFB-IEM
Link
Antenna
Booster
(+12VDC)
Optical
A Optical Power
Meter
RF Power
Meter
RF-IN (Failsafe)
M
RX Antenna
Gain
Link
Gain
Tunable
Laser
#51
#53
RF
OUT
Optical Power
Meter
RF-IN (Failsafe)
MTK952 TX1 #55
#57
140 MHz
RF-OUT
Gain
Optical Mux/Demux Multiplexer
Failsafe
Switch
Optical Mux/Demux Multiplexer
B RF
OUT
MAT283
matrix combiner
OUT
140 MHz
RF-IN
#51
140 MHz
RF-OUT
RF
OUT
OUT
IN
RF Power
Meter
140 MHz
#57
Gain
RF-IN
RX
Antenna
Link
RF-IN (Failsafe)
MTK952 TX2 140 MHz
RF-OUT
Gain
Optical
option
option
splitted
output
CWDM
CH Frequency
#51  = 1510nm
#53  = 1530nm
#55  = 1550nm
#57  = 1570nm
splitted
output
CWDM
CH Frequency
#51  = 1510nm
#53  = 1530nm
#55  = 1550nm
#57  = 1570nm
RF
OUT
MRK960
wideband receiver
RF
IN
MTK952 TX1
Failsafe
Switch
Antenna
Booster
(+12VDC)
External Filter
(Failsafe)
IN
RF Power
Meter
140 MHz
Gain
RF-IN
RX
Antenna
Link
TX.55 Mode: IFB RF
IN
MTK952 TX2 Failsafe
Switch
Tunable
Laser
B IFB-IEM
Link
Laser
OUT
Optical Power
Meter
Antenna
Booster
(+12VDC)
External Filter
(Failsafe)
#53
#55
RX.53 Mode: ANT Failsafe
Switch
Optical
Tunable
RX.51 Mode: ANT External Filter
(Failsafe)
IN
RX.57 Mode: IFB RF-OUT
Failsafe
Switch
Laser
Optical
140 MHz
RF
IN
Gain
Tunable
IFB-IEM
Link
RX.55 Mode: IFB RF-IN (Failsafe)
M
A Optical Power
Meter
RX Antenna
Gain
Link
Failsafe
Switch
TX.53 Mode: ANT OUT
140 MHz
RF-IN
Antenna
Booster
(+12VDC)
RF
IN
TX.51 Mode: ANT MFL-RRTT
wideband optical link
TX.57 Mode: IFB IFB-IEM
Link
Remote
IFB/IEM
Local
IFB/IEM
+
+
single-frequency
IFB area
MTK952 SLAVE
wideband DDS transmitter
Single-frequency operation
MTK952 MASTER
wideband DDS transmitter
Single-frequency operation
Above an example of remote diversity reception using all of 4 plug‐in modules available: - MFL‐RRTT in the remote site and MFL‐TTRR in local site (i.e. OB van or main studio facility). The remote antenna reception mode is similar to the one already described before. Again the tunable filter and variable gain allow a complete power control, in this way fiber always works at best condition without any risk of saturation! All RF and optical power can be remotely monitored through Ethernet but also can be recorded with the real ‐time clock for later check! Using MAT283 matrix combiner the remote and the local area can be integrate in a very safe way: areas which are not needed or noisy can be disabled in real time! Simply setting up the MFL mode from “ANT” (antenna) to “IFB”, it commutes on an internal RF path designed to best modulate a reference IFB signals. On local site a MTK952MS in master configuration generates an IFB signal and a reference out that feeds the optical transmitter (in mode “IFB”). On the remote site, the reference signal is received and amplified through a MTK952MS in slave configuration: This way we can create a single‐frequency IFB area! The system is able to compensate optical and RF power: - MFL monitors (through an optical power meter) and compensates automatically the loss of fiber! MTK952 monitors the transmitted level (with and internal power/SWR meter) to reach desired output power! MFL – WIDEBAND OPTICAL LINK
[Digitare il testo] TECHNICALSPECIFICATION
Mainframe RF to Optical modules (TX module) Optical to RF modules (RX module) Maximum number of modules RF to fiber link working modes Rear optical connectors Internal optical CWDM MUX/DEMUX
: : : : : : 1 to 4 1 to 4 4 2 (“ANT” mode or “IFB” mode)
5 SC/APC, other type on request 2 max (option MFL‐DMX) Typical application Frequency ranges (front panel selectable) : : External filter loss compensation TX Gain Input IP3 Noise figure SFDR RF input connector Antenna booster supply External filter connectors : : : : : : : : RX antenna remoting ‐ 140 to 840 MHz (flat) ‐ 470 to 840 MHz ‐ 25MHz BW tunable band‐pass filter (opt*) (center freq. in 1MHz step, from 404 to 788 MHz) ‐ External user band‐pass filter 0 to 6 dB
0dB (user adjustable +6 to ‐20dB typ.) > 16 dBm typ. < 20dB typ. (*) 2/3 > 116 dB/Hz typ. N female 50 Ω 12Vdc 200mA max BNC female 50 Ω : : : : 0dB (user adjustable ± 14dB typ.) yes, standard option N female 50 Ω BNC female 50 Ω : : : : “IFB” signal remoting (isofrequency systems) 140 to 840 MHz ‐ 6 to 10 dBm from ‐3dBm to + 10dBm : N female 50 Ω : : : : 0 dBm (user adjustable +6 to ‐20dB typ.) yes, standard option N female 50 Ω BNC female 50 Ω “ANT” mode RF TX characteristics
“ANT” mode RF RX characteristics
RX Gain Failsafe option RF output connector Failsafe connector “IFB” mode RF TX characteristics
Typical application Frequency range RF input level RF input level for 0dBm out (@ 0dB gain) RF input connector “IFB” mode RF RX characteristics
RX output level Failsafe option RF output connector Failsafe connector Optical TX module (option MFL‐TX module OTB001)
Optical power Wavelengths Laser : : : 3dBm (6dBm optional) 1511 or 1531 or 1551 or 1571 nm low noise, low distortion DFB laser
Optical RX module (option MFL‐RX module ORB001)
Input optical power range Wavelengths : : ‐5 dBm to 5 dBm
1490 to 1610 nm : : : ‐20 to +55 °C 90 to 240 Vac, 60VA max 10‐28Vdc 3A frame floating : : 19”/1U, 430x44x370mm (Width x Height x Depth) 4,5 kg Temperature Operating temperature Powering AC mains DC (option MFL‐DC) Dimensions and weight Dimensions Weight (*) Measured with “Ant” mode and 0 dB gain (standard “factory preset”) at 25 °C