Lemco MLF-101 User manual

© 2020 Lemco. All rights reserved. 1
Manual
v.1.1
www.lemco.gr
DTV - Headend
MLF-101
4 x DVB-S/S2/S2X to 4 x DVB-T/C
www.lemco.gr

DTV - Headend | MLF-101
Manual
© 2020 Lemco. All rights reserved. 2
Contents
Important safety precautions information p. 3
Introduction p. 5
Installation p. 9
Technical specifications p. 29
Warranty p. 33
Notes p. 38

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1. IMPORTANT SAFETY PRECAUTIONS INFORMATION
READ THE FOLLOWING WARNINGS BEFORE YOU USE YOUR DEVICE
The following safety precautions must be observed to prevent fire or electric shock
hazard. Safety precautions include but are not restricted to the following:
Power supply / Mains cord
• Operate the unit only within the voltage range defined as appropriate by the manufacturer.
• Occasionally check the power connector and remove dirt or dust that may have accumulated.
• Use only the mains cord that comes with your unit.
• Do not operate the unit or plug in the mains cord if it is broken, split, or damaged in any way.
• Do not place the mains cord next to heating devices. Do not pull it, place heavy objects on it or damage it in
any way. Keep it out of reach of children.
• Ensure that the device is plugged in a properly grounded socket. Insufficient grounding may cause electrocution.
• Always carefully disconnect all plugs by pulling on the plug and not on the cord. Make sure the unit’s power
switch is turned off before removing the cord from an outlet.
• Disconnect the mains cord when the unit is not in use for long periods of time or during storms.
• Do not connect the unit to a multiple-outlet to avoid plug overheating.
Disassembling
• This unit contains parts that cannot be repaired by the user. Do not disassemble or try to repair it as this will
void all warranties. Please contact the manufacturer if you experience any problems with your unit.
Water/humidity
• Do not keep the unit in a humid place or near water.
• Do not plug/unplug the unit with wet hands.
Fire
• Never place a candle or another source of fire on the unit as it may fall and start a fire.if the mains cord or
the power connector is damaged or destroyed, or if there is a sudden loss of picture during operation, or if
you notice a strange smell or there is smoke, immediately switch the unit off, disconnect the mains cord and
contact the manufacturer’s technical support department.
Installation / Storage
• This unit contains high precision pieces of electronics. To ensure optimal performance and avoid damage, do
not store it in any location where it may collect dirt, duct, lint, etc. Do not expose it to extreme heat or cold
(e.g. in direct sunlight, near a heater or in the car during the day). Place the unit in a secure place to avoid falls.
• Before moving the unit, always unplug all cords first.
• When installing the unit, make sure that an outlet is within easy reach. In case of malfunction, switch the unit
off and unplug the power cord. When the unit is not in use for a long period of time, make sure that the mains
cord is disconnected.
WARNING

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Connectivity
• Before connecting the unit to other electronic devices, always switch off and unplug all devices.
Maintenance
• Do not spill liquids on the unit. Do not use any diluents or volatile liquid to clean the unit. Instead, use a soft
slightly damp cloth and allow the unit to dry completely before using again.
Handling
• Do not poke your finger into the openings on your unit.
• Never put paper, metal parts or other objects into the openings of your unit. If you suspect that there are for-
eign parts in your unit, switch it off and unplug the mains cord. Contact the manufacturer’s technical support
department.
• Do not step on or place heavy objects on top of the unit. To avoid hardware damage, handle all buttons, con-
nectors and switches gently.

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2. INTRODUCTION
Congratulations on purchasing the MLF-101. You now own a high quality, professional DTV headend. To get the
most out of your purchase, please take the time to carefully read through this manual.
3. INSTRUCTIONS
3.1 - DESCRIPTION
The MLF-101 is a very powerful, all-in-one device, able to receive up to four (4) independent satellite (DVB-S/S2/S2X)
signals supporting multistream reception and convert them in 4 x DVB-T/C RF output channels. and convert them
in four (4) x DVB-T/C RF output channels. It supports “pool” technology, meaning that the user is able to select any
program from any of the 4 inputs and assign it to any of the four (4) RF providing great flexibility.
The embedded web server of the MLF-101 provides a very friendly user interface as well as the ability of remote or
local control of the device via Ethernet.
Its small size and its powerful features renders the MLF-101 the ideal solution in cases we want to distribute FTA
(Free-To-Air) TV programs coming from (DVB-S/S2/S2X) sources to a CATV installation using the DVB-T/C.
3.2 - FEATURES
• 4 x independent multi-standard inputs DVB-S/S2/S2X
• Multi-stream support
• 4 x RF output DVB-T/C (software selectable)
• “Pool” technology
• MER value > 42dB
• Dual power supplies offering redundancy mode
• PID Filtering
• Custom NIT/SDT
• Local or remote control via webserver
• Very friendly user interface
• Wall or rack mount options
• Ultra-compact size
• 5year warranty
3.2.1 - Auto-reset functions and watchdog
During the normal operation of the MLF-101, the main CPU monitors all the internal parts in order to ensure that the
device works normally. In case of an internal error or module failure, the MLF-101 immediately initiates the recovery
procedure by resetting the appropriate module or the device. Finally, watchdog timers ensure that the device will
be reset in case of CPU failure.

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3.2.5 – Dual power supplies
The MLF-101 is powered from one or two external power supplies of +12VDC/2.5A. In case we connect two external
power supplies then they will work in redundancy mode. Thus, in case of failure of one of the two external power
supplies the device will continue working without stopping.
3.2.6 – Multi-stream SAT reception
The MLF-101 is able to receive and analyze any kind of multi-stream satellite signal.
3.2.2 - “Pool” technology
The MLF-101 supports “pool” technology, meaning that the user is able to select any TV or Radio program from any
input and assign it to any of the 4 outputs providing great flexibility.
3.2.3 - DVB-T or DVB-C compliant
The user is able to software select the modulation standard, between DVB-T and DVB-C, of the MLF-101 without
the need of any firmware upgrade.
3.2.4 – Custom NIT/SDT
Using the MLF-101 the user is able to create custom NIT and SDT tables according to his needs.

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3.3 - BLOCK DIAGRAM
4 x DVB-T/C
DVB-S/S2/S2X
DVB-S/S2/S2X
DVB-S/S2/S2X
DVB-S/S2/S2X MLF-101

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3.4 - Product drawing views
1. Reset button
2. Status LED
3. RF inputs
4. LAN control
5. RF output
6. Dual power supply inputs
7. Fan cooler

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4. INSTALLATION
4.1 - General
4.2.1 - “General” page
Status - Inputs 1…4
The MLF-101 has a very friendly interface for programming and monitoring purposes. The user is able to gain
access to the embedded webserver, by opening an Internet browser (e.g. Internet Explorer, Firefox or Chrome) and
type the following static IP: 192.168.1.205.
The default username and password are the following:
Username: admin
Password: 12345
Every time that the user is connected to the device, the “General” page (Figure No 1) is loaded providing a current
general status information of the device.
In these fields, the user is able to see the status of each tuner e.g. If it is locked / unlocked or disabled, the working
mode eg. DVB-S/S2/S2X etc…
4.2 - Embedded Webserver
Status
• Figure No 1

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In these fields, the user is able to see the status of all the RF outputs of the device such as modulator’s state, RF
output frequencies and modulation settings.
Outputs – Modulator 1…4
This section provides general information of the device, like internal status of all device’s modules like Multiplexer
and modulator, CPU temperature, system uptime and CI interface status as well as general status codes of the
device for troubleshooting purposes.
System
4.2.2 - “Program list” page
At “Program list” page (Figure No 2) the MLF-101 provides information of all programs that are currently being
distributed via its four RF and IP outputs.
At the same time, the device offers the whole channel list to be exported under the follow file types:
• Excel – All the program list is exported in .xlsx format
• CSV – All the program list is exported in .csv format
• M3U – All the program list is exported in .m3u
• Figure No 2

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4.2.3 - “Block diagram” page
The “Block diagram” page (Figure No 3) provides a general view of device’s internal modules and architecture.
All icons are clickable providing the ability to the user to go directly to the setup page of all internal modules of the
device. The grey icons mean that the current module is disabled.
• Figure No 3

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Setup
4.2.4 - “Input” page
At the “Input” page (Figure No 4) the user is able to select the working mode for each input.
There are four tabs, one for each input. The user is able to select the working mode of each input as follows:
For Satellite signal reception the user must select DVB-S/S2/S2X mode:
1. Tuner Enabled/Disabled - Enable or disable the specific tuner
2. SAT or IF frequency – Select how to insert the SAT frequency
3. Symbol rate – Insert the symbol rate
4. LNB voltage – Select the LNB voltage (13V,18V, OFF)
5. Band – Select the appropriate SAT band (works only if IF frequency is selected as input method)
6. DiSEqC – Select DiSEqC A, B, C, D
7. PLS – Enter the PLS number of the stream
• Figure No 4

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Multi-stream section
Tuner status
In case the tuner is lock to a satellite multi-stream transponder the first available stream will be chosen by default.
The user is able to freely select which stream he wants to receive/ distribute from the Stream ID selection area.
Moreover, in case PLS is needed the user is able to set the PLS from the available field.
For each input the MLF-101 provides several information such as tuner status (Locked/Unlocked), total bitrate,
signal strength, quality etc.
4.2.5 - “TS configuration” page
At the “TS configuration” page (Figure No 5) the user is able to setup the by-pass mode of the device.
Bypass Mode
With the term “Bypass” we mean that the device is able to receive the transport stream (TS) from one input and
send it to one output (modulator) without doing any kind of multiplexing. In this case, all PIDs or programs are not
able to be changed and there are transfer transparently to one output.
The user is able to select if Input No 1,2,3 or No 4 wants to be send to Output No1,2,3 or No4 respectively using
bypass mode by selecting the appropriate check box. (Figure No 5)
• Figure No 5

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4.2.6 - “Program Selection” page
At the “Program Selection” page (Figure No 6) the user is able to select any program from any input and assign it
to any output using the “pool” technology.
There are four (4) tabs, one for each input. Each tab depicts all the TV and Radio programs from the input that has
being selected during the “Input page” processes.
When the user selects one input, the device’s multiplexer does a real time analysis and depicts the program list
from this specific input. For each program the MLF-101 provides the following information/options:
• Original Program Title – which is the name of the program
• Program Title – The ability to enter a custom name for this specific program
• Original Service ID – which is the original Service ID number of the program
• LCN No – which is the logic channel number of the program
• Bandwidth – which is the bitrate of the program in Kbps
• Encrypted – which depicts if the program is encrypted or not
• Output – To select in which the program must be assinged
• Output Service ID – The user is able to provide custom Service ID number
• Figure No 6

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Each program title has a small cross at the left which can be expanded if the user will click on it. During this
procedure, all the available PIDs of this specific program are reveled (Figure No 7). In this case, the user is able to
select/deselect which PID want to be outputted.
• Figure No 7

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Caution!
The number of programs that the MLF-101 is able to distribute depends on the resolution (SD, HD, 4K etc.), the
compression (MPEG2, H.264 etc…) and in general from the total bitrate of each program.
For example, if we select the following DVB-T setting for the four modulators on MLF-101 outputs:
• Constellation: 64 QAM
• Guard Interval: 1/32
• Code rate: 7/8
• Bandwidth: 8 MHz
According to Appendix A we will have a total output bitrate of 31.67Mbps/ modulator. That means that we can
select as many programs as the user wants but their total bitrate must not exceed the 31.67Mbps, otherwise artifacts
may occur.
The status section in (Figure No 9) provides a general idea to the user of the current payload (according to the
selected programs) comparing it to the max. output payload.
It is recommended that the user must not exceed the 85% from each output, since all the bitrate are variable
according to their specific content.
Using the Drop-down menu from “Output” column (Figure No 8) the user is able to assign any program to any of
the four outputs. By doing the same process for each program, from all inputs the user is able to create his own 4
custom multiplex in the output.
• Figure No 8
• Figure No 9

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Peak Detection mechanism
As shown in Figure No 8 there is a colored indicator of the peak detection mechanism, for each output transport
stream. This indicates if any overflow has occurred on modulator’s output bitrate with the following colors:
• Green – No overflow occurred
• Yellow – No overflow occurred but the input bitrate is close to the output bitrate
• Red – Overflow occurred. The user must decrease the input bitrate
4.2.7 - “Output” page
At the “RF Output” page the user is able to select in which modulation standard the four (4) output modulator will
operate (Figure No10).
DVB-T: 4 x modulator working in DVB-T standard
DVB-C: 4 x modulator working in DVB-C standard
• Figure No10

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4.2.8 - “RF Output” page
At the “RF Output” page (Figure No 11) the user is able to setup the RF output settings of the device.
For each modulator in DVB-T mode the user is able to setup the following parameters:
• Channel – The output channel for the first modulator*
• Frequency – The output frequency of the first modulator*
• Constellation – The constellation of the first modulator*
• Code Rate – The coder rate of the first modulator*
• Guard Interval - The guard interval of the first modulator*
• Channel Bandwidth – The channel bandwidth of the first modulator*
• Modulation – The modulation type of the first modulator*
• Enable/Disable – Enable or disable the current modulator
• Output level – Adjust the output level for each modulator from 70-90dΒμV.
* All the four outputs of the MLF-101 operate in adjacent RF output channels. This means that the user setups
only the first modulator and all the other three modulators have the same settings and automatically are being
programmed in adjacent channels.
E.g. If the user sets the CH21 in UHF band on modulator No1 the other three modulators will be automatically set
to CH22, CH23 and CH24, respectively.
• Figure No 11

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The status section in (Figure No 12) provides a general idea to the user of the current payload (according to the
selected programs) comparing to the max. output payload.
It is recommended that the user must not exceed the 85% from each output, since all the bitrate are variable
according to their specific content.
4.2.9 - “TS settings” page
At this section (Figure 13), the user is able to setup all the TS settings of the four multiplexes at device’s output.
For each multiplex output the user can setup the following settings:
TS ID: Which is the ID No of the specific multiplex (1…65535)
Net ID: Which is the Net ID No of the specific multiplex (1…65535)
Original Net ID: Which is the Org. Net ID No of the specific multiplex (1…65535)
Network Name: Which is the network name of the specific multiplex
NIT: Select from Global, Default and Custom options
NIT version: Select the NIT version
Global NIT: Select the input source of Global NIT. In this case NIT will be the same for all outputs.
LCN provider: Choose the appropriate LCN provider (EACEM, ITC, Nordig, APN)
• Figure No 12
• Figure No 13

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4.2.10 - “NIT” page
At this section (Figure 14), the user is able to create custom NIT table for each of the four outputs of the device.
Moreover, this section offers the ability to export / import a NIT table.
For more information on how to create a custom NIT table please refer to “Lemco NIT creation guidelines.pdf”
document in Lemco’s website.
4.2.11 - “SDT” page
At this section (Figure 15), the user is able to create custom SDT table for each of the four outputs of the device.
Moreover, this section offers the ability to export / import a SDT table.
For more information on how to create a custom SDT table please refer to “Lemco SDT creation guidelines.pdf”
document in Lemco’s website.
• Figure No 14
• Figure No 15