WisyCom MFL User manual

MFL User Manual
RF over Fiber System
Up to 4 ch’s in a single mode fiber
Diversity reception antenna remoting
IFB transmissions remoting
Integrated tunable filters
Optical & RF power meter
Ethernet conn. for remote control
rev.04 (ref. FW 1.15)
Date: 27 May, 2019

MFL User Manual
1
Summary
Front Panel Control and Functions...................................................................................................................................2
Rear Panel.........................................................................................................................................................................3
System Description...........................................................................................................................................................4
Optical receiver and transmitter modules....................................................................................................................6
Optical Receiver Module ..............................................................................................................................................7
Optical Transmitter Module .........................................................................................................................................8
TRANSMISSION SYSTEM (MODE: IFB).......................................................................................................................8
RECEPTION SYSTEM (MODE: ANT) ...........................................................................................................................9
Filter option ................................................................................................................................................................10
Link without MUX/DEMUX Module............................................................................................................................11
Optical MUX/DEMUX Module ....................................................................................................................................11
OMX option.............................................................................................................................................................11
OMS option.............................................................................................................................................................12
DC Option....................................................................................................................................................................14
N48 Option .................................................................................................................................................................14
V48 Option..................................................................................................................................................................14
SPL option ...................................................................................................................................................................15
Double OMS option ....................................................................................................................................................15
Optical link budget......................................................................................................................................................16
Failsafe mode..............................................................................................................................................................17
Configuration examples:.................................................................................................................................................18
IFB TRANSMISSION –MODE: IFB................................................................................................................................18
RECEPTION - MODE: ANT............................................................................................................................................19
MULTI-CARRIERS TRANSMISSION –MODE:<n>ifb.....................................................................................................20
OLED Display...................................................................................................................................................................21
MFL Info screen ..........................................................................................................................................................21
Main screen ................................................................................................................................................................21
Menu Tree ......................................................................................................................................................................22
Main menu..................................................................................................................................................................25
TX Link menu...............................................................................................................................................................26
RX Link menu ..............................................................................................................................................................27
Alarm List ....................................................................................................................................................................28
Troubleshooting..........................................................................................................................................................30
Safety instruction............................................................................................................................................................31
ITALY ONLY..............................................................................................................................................................32
TECHNICAL SPECIFICATION............................................................................................................................................33

MFL User Manual
2
FRONT PANEL CONTROL AND FUNCTIONS
MFL allows an easy and quick configuration using buttons, push knobs and display.
The front panel is functionally divided in the following section:
A –LINK STATUS
Transmitter / Receiver configurations
❶Connection status:
The first column of LEDs indicate Alarms
The ON column indicate if a module is ON
The FAILSAFE column indicate if the Failsafe option is enabled
STATUS and CONN, showing the LED indications of the Ethernet module on the rear panel
❷Display (64 x 256 pixels yellow OLED display)
❸3 push buttons (membrane). The function of each button (upper, middle and lower) will be readable
from the contextual menu on the display.
❹Warning (YELLOW) and Alarm (RED) light indicator
❺Push rotary knob. Rotate and push to select.
B –LINK DIAGRAM
This part shows the block diagram of one complete channel and the BOOSTER supply if enabled from the
transmitters
C –TEMPERATURE ALARMS & CONFIGURATION LABEL
TEMP. ALARM: indicate eventually high temperature on the device.
FAN1/FAN2: these LEDs turn on if faults occur to the cooling system.
CONFIGURATION LABEL: name and configuration of the device.
D - LOCK & POWER
LOCK: it locks the editing of the display.
POWER: ON/OFF square powering button turns on/off the MFL. Above the power button, there are two
LEDs to indicate the type of power supply.
NOTE: If both AC/DC power are supplied, both LEDs turn on but the device uses only AC power supply
A
B
C
D
❶
❷
❸
❺
❹

MFL User Manual
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REAR PANEL
❶❷❸ ❹❺❻❼❽❾❿⓫ ⓬⓭ ⓮⓯⓰⓱
⓲⓳⓴
❶AC Power Plug AC mains power input, IEC Connector 90-264 Vac
❷Product label with Serial Number and Options installed
❸Ground point To connect the MFL rack frame to ground
❹DC Power Plug (only with MFL-DC option) DC power input, 10-28Vdc, Max 5A
❺Ethernet socket (RJ45) for connection to a network or computer
❻Auxiliary optical Input/Output Connector
❼Optical Input/Output Connectors where the optical signals are divided by wavelength
❽Optical Input/Output Connector where the optical signals are multiplexed (only with MFL-OMX
option)
❾Optical safety label
❿Output N connector female 50Ω (*)
⓫Orange label: relative laser wavelength = 1570 nm
⓬Output N connector female 50Ω (*)
⓭Yellow label: relative laser wavelength = 1550 nm
⓮Input N connector female 50Ω with switchable 12V boosting power (only on transmitter modules) (*)
⓯Green label: relative laser wavelength = 1530 nm
⓰Input N connector female 50Ω with switchable 12V boosting power (only on transmitter modules) (*)
⓱Blue label: relative laser wavelength = 1510 nm
⓲BNC-F connector 50Ω for failsafe option (on receivers modules) (*)
⓳BNC-F connector 50Ω to connect the output of an external filter (on transmitters modules) (*)
⓴BNC-F connector 50Ω to connect the input of an external filter or for failsafe option (on transmitters
modules) (*)
*In this example. Other configurations on request.
TX*
RX*

MFL User Manual
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SYSTEM DESCRIPTION
MFL provides wideband optical link for up to 4 RF channels combined in one single mode 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 chosen any combination of two types:
•TX: Laser optical transmitter, (CDWM) plug-in board
•RX: Optical-receiver plug-in board
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:
Example of some possible configurations:
-MFL-TTTT is a 4 laser transmitters on channel 51/53/55/57 (λ = 1510/1530/1550/1570 nm)
-MFL-RRTT has 2 receivers on ch. 51/53 and 2 transmitters ch. 55/57 (it works with MFL-TTRR)
-MFL-TTRR has 2 transmitters on ch51/53 and 2 receivers on ch. 55/57 (it works with MFL-RRTT)
-MFL-TT-- has 2 transmitters on ch51/53
Channel
Wavelength
Color
Identifier
51
Wavelength 1510 nm laser, single mode
Blue
53
Wavelength 1530 nm laser, single mode
Green
55
Wavelength 1550 nm laser, single mode
Yellow
57
Wavelength 1570 nm laser, single mode
Orange
NAME
Ch. 51
Ch. 53
Ch. 55
Ch. 57
MFL-TTTT
T
T
T
T
NAME
Ch. 51
Ch. 53
Ch. 55
Ch. 57
MFL-RRTT
R
R
T
T
NAME
Ch. 51
Ch. 53
Ch. 55
Ch. 57
MFL-TTRR
T
T
R
R
NAME
Ch. 51
Ch. 53
Ch. 55
Ch. 57
MFL-TT--
T
T
-
-

MFL User Manual
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Following the main code and option that can build up a MFL system:
Code
Description
❶
MFL [BASE]
WIDEBAND RF OVER FIBER MAINBOARD
19' 1U Rack units , aluminium frame
Oled display - Ethernet - failsafe switch - realtime clock
AC Powered 230V
❷
RX Module
Optical RX module for MFL (CWDM)
❸
TX Module
Laser TX module for MFL (CWDM), wavelength 1510/1530/1550/1570 nm
❹
DC
DC power supply (10÷28Vdc) on XLR-4M connector
N48
Neutrik OPTICAL DUO connector for fiber and DC power supply (15÷48Vdc)
V48
DC power supply (15÷48Vdc) on XLR-4M connector
SPLxx
Optical splitter option [1:2],[1:3],[1:4]
Optional
MUX
❺
OMX
Module Mux/Demux for 1:4 CWDM
OMS
Module Mux/Demux for 1:6 CWDM
Filter
❻
BF1 (old)
RF filter 25MHz tuning range over 404÷788 MHz
F41
Tunable filter 410-730MHz, 40MHz of Bandwidth,
Selectable Filter HP: 410/470/510 MHz + LP: 600/700/810 MHz,
Fixed Filter 940 ÷ 960 MHz (Europe/Usa)
F42
Tunable filter 410-730MHz, 40MHz of Bandwidth,
Selectable Filter HP: 470/520/550 MHz + LP: 617/662/698 MHz,
Fixed Filter 940 ÷ 960 MHz (Europe/Usa)
F45
Tunable filter 410-730MHz, 40MHz of Bandwidth,
Selectable Filter HP: 410/470/510 MHz + LP: 600/714/810 MHz,
Fixed Filter 806 ÷ 810MHz (for Japan)
①
④
⑤
⑥
⑥
②
③
②
③
②
③
②
③
Max 4 optical
modules (TX/RX)
*
* The images are purely for information. This represent one of
the possible configurations

MFL User Manual
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Optical receiver and transmitter modules
Optical RX module is designed to convert optical signal into RF signal while Optical TX module converts RF signal to
optical signal.
RX and TX modules can be used for both RECEPTION AND TRANSMISSION SYSTEMS.
When they are used for reception of RF signal from one receiving antenna to a receiver or combiner, both RX and
TX modules have to be configured in “ANT” mode
When they are used for transmission of RF signal from one transmitter to an antenna, both RX and TX modules have
to be configured in “IFB” mode
When they are used for transmission of RF signal from <n> transmitters to an antenna, both RX and TX modules
have to be configured in “<n>ifb” mode. Below the example for 4 carriers (4ifb mode)

MFL User Manual
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Optical Receiver Module
Optical RX module is designed to convert optical signal into RF signal.
The module is equipped with a Optical Power Meter which measures in real time the received optical power.
Receiver module is designed to work in a range approx. 0.3mW ÷ 3mW (-5dBm÷5dBm). Optical power limits of RX
module can be verify in the menu “RX Link > Receiver param”.
It is advisable to work in this range to minimize the noise generated by
the fiber system and reduce intermodulation issue.
An alarm occurs on the display if detected power is out of this range. If the optical power received is too high, we
suggest to add an optical attenuator as show below:
Wisycom code
description
CNFTGT01
2dB ATTENUATOR SC/APC-SC/APC
By MAIN menu, it is possible to disable the High opt. power alarm. This
parameter is set to enabled as default settings.
Internal RF amplifier allows to adjust gain in 0.5dB steps. Gain range
depends on the hardware revision of the module and configuration set (ANT/IFB/<n>IFB).
In TRANSMITTING IFB mode DC power for
external amplifier can be enabled.
i.e. PAW:
PAW powered by MFL, provides from 10mW to
200mW according to the MFL-RX module gain
setting
Common settings:
PAW output
power
MFL gain dB
setting
10 mW
-10 dB
50 mW
-3 dB
100 mW
0 dB
200 mW
+3 dB
Popt : 0.3 mW ÷ 3 mW
-5 dBm ÷ 5 dBm

MFL User Manual
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Optical Transmitter Module
Optical TX module is designed to modulate RF signal to optical fiber.
The module is equipped with a RF Power Meter which measures in real time the RF power input.
A dedicate RF BAR menu gives indication of average RF level for each modules.
“0” is the reference level
For TRANSMISSION SYSTEM (MODE: IFB), “0” level means 0dBm
For RECEPTION SYSTEM (MODE: ANT), “0” level means -20dBm (≈87 dBµV)
WARNING:
RF LEVELS HAVE TO REMAIN < “10” in order to avoid intermodulation issue.
NOTE: RF level depends on the band setting (filter).
RF bar are diseabled in TRANSMISSION MODE: <n>ifb
TRANSMISSION SYSTEM (MODE: IFB)
When the module is configured for TRANSMISSION SYSTEM (MODE: IFB), input RF power has to remain with in the
range 0.25mW ÷ 4mW (-6dBm÷6dBm).
Wisycom MTK952 trasnmitter with MS option provides a dedicated port at 0dBm of reference to connect directly
into the MFL TX module.
With different transmitters than MTK952, the user has to make sure that input RF power is within the range, by
adding RF attenuators if input RF power is too high.
Prf reference =
Prf : 0.25 mW ÷ 4 mW
-6 dBm ÷ 6 dBm
0dB is the reference level
MTK952N
Master conf.
MTK952N
Slave conf.
MFL-TT--
MFL-RR--
Fiber optic cable
up to several tens of kilometers
(depending on the fiber)
Area 1
Area 2
Audio input
0dBm
OTHER TX
With attenuator
PAW
MFL-TT--
MFL-RR--
Fiber optic cable
up to several tens of kilometers
(depending on the fiber)
Area 1
Area 2
TX1
TX2
Directional
Coupler

MFL User Manual
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RECEPTION SYSTEM (MODE: ANT)
When the module is configured for RECEPTION SYSTEM (MODE: ANT), it is advisable to filter the RF signal in input
and to set the Gain in order to work at 0dB as maximum level (e.g. when the transmitter is close to the antenna).
Wisycom supplies different RF filters models:
integrated in the MFL (BF1, F41, F45… option)
integrated in antenna (LFA or ADFA antennas)
integrated in the booster (BFA booster)
Enabling booster on the menu provides DC power supply to external
booster or active antenna.