Lemco Compact Line 2-Headend Series User manual

© 2023 Lemco. All rights reserved. 1
Operation Manual
v.1.0
www.lemco.gr
Compact Line 2-
Headend Series
SCL - 824CT / 834CT
8 x DVB-S/S2/T/T2/C + 4xFlexCAM to 4x DVB-T/C + IP
8 x DVB-S/S2/S2X + 4xFlexCAM to 4x DVB-T/C + IP
www.lemco.gr

Compact Line 2 - Headend Series | SCL - 824CT / 834CT
Operation Manual
© 2023 Lemco. All rights reserved. 2
Contents
Important safety precautions information p. 3
Introduction p. 5
Installation p. 10
Technical specifications p. 34
Warranty p. 41
Notes p. 42

Compact Line 2 - Headend Series | SCL - 824CT / 834CT
Operation Manual
© 2023 Lemco. All rights reserved. 3
1. IMPORTANT SAFETY PRECAUTIONS INFORMATION
READ AND UNDERSTAND THE FOLLOWING WARNINGS BEFORE
USING YOUR DEVICE TO ENSURE SAFE AND PROPER USAGE
To prevent fire, electric shock, or other hazards, always observe the following safety
precautions. These precautions include, but are not limited to:
Power supply / Mains cord
•Use the unit strictly within the voltage range specified by the manufacturer to prevent damage or malfunction.
•Regularly inspect the power connector and remove any accumulated dirt or dust to maintain optimal performance.
•Use only the mains cord provided with your unit to ensure compatibility and safety.
•Avoid using the unit or plugging in the mains cord if it appears damaged, frayed, or compromised in any way.
•Keep the mains cord away from heat sources and avoid pulling, placing heavy objects on, or causing damage
to the cord. Store it safely out of children’s reach.
•Plug the device into a properly grounded socket to minimize the risk of electrocution.
•When disconnecting plugs, always pull on the plug and not the cord. Ensure the unit’s power switch is off be-
fore removing the cord from an outlet.
•Unplug the mains cord during extended periods of non-use or during storms to protect the unit.
•Avoid connecting the unit to a multi-outlet to prevent plug overheating and potential fire hazards.
Disassemblin
•This unit contains specialized components that are not user serviceable. Refrain from disassembling or at-
tempting repairs, as this will void any warranties. Contact the manufacturer for assistance with any issues.
Water/humidity
•Store and operate the unit in a dry environment, away from moisture or water sources.
•Never plug or unplug the unit with wet hands to avoid electric shock.
Fire
•Avoid placing open flames, such as candles, on or near the unit to prevent potential fires.
•In case of damaged mains cords, power connectors, sudden loss of functionality, unusual smells, or smoke,
promptly turn off the unit, disconnect the mains cord, and contact the manufacturer’s technical support de-
partment.
Installation / Storage
•To ensure optimal performance and prevent damage, store the unit in a clean, dry location, away from tem-
perature extremes (e.g., direct sunlight, heaters, or inside a car during the day). Securely place the unit to
prevent falls.
•Before moving the unit, disconnect all cords.
•When installing the unit, ensure that an outlet is easily accessible for quick disconnection in case of malfunc-
tion. Disconnect the mains cord when the unit is not in use for extended periods.
WARNING
Connectivity
•Always turn off and unplug all devices before connecting the unit to other electronic devices.
Maintenance
•Avoid spilling liquids on the unit. To clean, use a soft, slightly damp cloth and allow the unit to dry completely
before using it again. Do not use harsh chemicals or volatile liquids.

Compact Line 2 - Headend Series | SCL - 824CT / 834CT
Operation Manual
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Electromagnetic Interference (EMI) and Radio Frequency Interference (RFI) precautions
Accessory compatibility
Software updates
Child safety
Environment and disposal
Emergency situations
Grounding Precaution
•Be aware that your device may cause or be affected by electromagnetic interference or radio frequency inter-
ference. Keep the device at a safe distance from other electronic devices, such as pacemakers, hearing aids,
or other medical equipment, to prevent potential interference.
•Avoid placing the device near or on top of audio equipment or televisions, as it may cause interference with
the reception or operation of these devices.
•Use only compatible accessories and attachments approved by the manufacturer. Using unauthorized or
incompatible accessories may cause malfunction, damage to the unit, or pose safety risks.
•Regularly check for software updates and install them to ensure your device stays up to date with the latest secu-
rity patches and bug fixes. This will help maintain the device’s performance, stability, and overall user experience.
•Keep the device and all its accessories out of the reach of children. Small parts may pose a choking hazard.
Additionally, improper use of the device by children could result in damage or injury.
•Recycle or dispose of the device, its accessories, and batteries according to local regulations. Electronic de-
vices and batteries should not be disposed of in regular household waste to prevent environmental harm.
•Be aware that in certain emergency situations, such as earthquakes, fires, or power outages, the device may
not function as expected. Always have alternative communication methods and emergency plans in place.
Proper grounding is crucial for the safe and effective operation of your device. To minimize the risk of electric
shock, equipment damage, or interference, please follow these grounding precautions:
•Ensure the device is connected to a grounded electrical outlet: The device should be connected to a properly
grounded, three-pronged electrical outlet. This will help to protect the device and users from potential elec-
trical hazards.
•Check the grounding of your entire system: All interconnected devices, such as antennas, cables, and other
equipment, should also be properly grounded. This helps prevent ground loops, which can cause interference
and degrade system performance.
•Use grounded cables and connectors: When connecting the device to other devices, use shielded cables and
connectors with proper grounding. This ensures that the entire signal path is grounded, reducing the potential
for interference, and improving overall system performance.
•Inspect grounding connections periodically: Regularly check all grounding connections for signs of wear,
damage, or corrosion. Loose or damaged grounding connections can compromise the safety and perfor-
mance of your DTV headend system.
•Consult a professional if in doubt: If you are unsure about the grounding of your system or require assistance
with grounding-related issues, consult a qualified technician or electrician. Proper grounding is essential for
the safe and effective operation of your device and the overall DTV headend system.
By taking these additional safety precautions into consideration, you can further ensure the safe and proper use
of your device.
Handling
•Do not insert fingers or objects into the unit’s openings.
•Never insert paper, metal, or other foreign objects into the unit’s openings. If foreign objects are suspected in-
side the unit, turn it off, unplug the mains cord, and contact the manufacturer’s technical support department.
•Refrain from stepping on or placing heavy objects on the unit. Gently handle all buttons, connectors, and
switches to avoid hardware damage.

Compact Line 2 - Headend Series | SCL - 824CT / 834CT
Operation Manual
© 2023 Lemco. All rights reserved. 5
2. INTRO
ratulations on purchasing the SCL- 824CT / 834CT! You are now the proud owner of a high-quality, professional
DTV headend. This powerful and versatile device is designed to provide you with exceptional performance and
reliability for all your digital television needs.
3. INSTRUCTIONS
3.1 - DESCRIPTION
The SCL-824CT and SCL-834CT are part of the Compact Line 2 headends product line that provides Free-To-Air
(FTA) models with advanced flexibility. These models offer TV distribution signal over RF+IP simultaneously for
seamless integration with a wide range of applications. This feature-rich series is designed to meet the evolving
needs of the broadcasting industry and offer a superior viewing experience to the end-users.
(For SCL-824CT model)
The SCL-824CT headend from Lemco’s Compact Line 2 series is a highly versatile and efficient all-in-one device
designed to accommodate diverse broadcasting needs. Its advanced capabilities include the ability to receive up
to 8 independent signals from satellite (DVB-S/S2), terrestrial (DVB-T/T2), or cable (DVB-C) sources, converting them
into 4 DVB-T/C RF output channels while simultaneously offering 1 Gbit IPTV streaming.
The device’s innovative “pool” technology allows users to select any program from the 8 inputs and assign it to any
of the 4 RF + IP outputs, providing exceptional flexibility in content distribution. Powered by a robust CPU (Quad-
core @ 1.8GHz / 2GB RAM) and operating on Linux OS, the SCL-824CT ensures smooth and efficient device control,
while offering a user-friendly and highly responsive interface. Additionally, the device can be controlled remotely
or locally via Ethernet.
The compact design and impressive features of the SCL-824CT make it the perfect solution for distributing Free-
To-Air (FTA) TV programs from various sources (satellite, terrestrial, or cable) to a CATV installation using DVB-T/C
and IP technology.
Furthermore, the device is capable of hosting an IPTV middleware (Fleex Embedded) without the need for an ex-
ternal server, enabling users to control all TV monitors in an installation (with support for LG, Samsung, Philips, and
custom STBs). This provides a wide range of features, including Live TV, Live Radio, Info channels, Cast, Weather,
Alarm, EPG, and more.
Overall, the SCL-824CT headend is an innovative and powerful device that provides advanced features and flex-
ibility to deliver high-quality TV distribution. It’s a great choice for cable TV companies, IPTV providers, hotels,
hospitals, and other similar installations.
(For SCL-834CT model)
The SCL-834CT headend from Lemco’s Compact Line 2 series is a highly versatile and efficient all-in-one device
designed to accommodate diverse broadcasting needs. Its advanced capabilities include the ability to receive up
to 8 independent signals from satellite (DVB-S/S2/S2X) with multi-stream support, converting them into 4 DVB-T/C
RF output channels while simultaneously offering 1 Gbit IPTV streaming.
The device’s innovative “pool” technology allows users to select any program from the 8 inputs and assign it to any
of the 4 RF + IP outputs, providing exceptional flexibility in content distribution. Powered by a robust CPU (Quad-
core @ 1.8GHz / 2GB RAM) and operating on Linux OS, the SCL-834CT ensures smooth and efficient device control,
while offering a user-friendly and highly responsive interface. Additionally, the device can be controlled remotely
or locally via Ethernet.

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Operation Manual
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3.2 - FEATURES
•8 x independent multi-standard inputs DVB-S/S2/T/T2/C (For SCL-824CT)
•8 x independent multi-standard inputs DVB-S/S2/S2X (For SCL-834CT)
•Multi-stream reception support (For SCL-834CT)
•4 x RF output DVB-T/C (software selectable)
•MER value > 45dB
•IPTV streaming (up to 64 x SPTS / 4 x MPTS) @ 480Mpbs
•SAP/SDP support
•“Pool” technology
•PID Filtering
•Custom NIT/SDT support
•PCR re-stamping, Correction
•EPG over RF and IP
•Very friendly user interface
•Fleex Embedded support (IPTV middleware)
•5 year warranty
The compact design and impressive features of the SCL-834CT make it the perfect solution for distributing Free-
To-Air (FTA) TV programs from various satellite sources to a CATV installation using DVB-T/C and IP technology.
Furthermore, the device is capable of hosting an IPTV middleware (Fleex Embedded) without the need for an ex-
ternal server, enabling users to control all TV monitors in an installation (with support for LG, Samsung, Philips, and
custom STBs). This provides a wide range of features, including Live TV, Live Radio, Info channels, Cast, Weather,
Alarm, EPG, and more.
Overall, the SCL-834CT headend is an innovative and powerful device that provides advanced features and flex-
ibility to deliver high-quality TV distribution. It’s a great choice for cable TV companies, IPTV providers, hotels,
hospitals, and other similar installations.
3.2.1 - Auto-reset functions and watchdog
3.2.2 - Multi-Standard inputs
During the normal operation of the SCL-824CT/834CT, 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 SCL-824CT/834CT
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.
Discover the exceptional versatility of the Compact Line 2 Multi-standard headend solution. This advanced system
is specifically designed to accommodate diverse broadcasting needs and industry standards, including DVB-S/S2/
S2X, DVB-T/T2, DVB-C and HDMI. Its seamless integration of various signal formats makes it the ideal choice for
cable TV companies, IPTV providers, hotels, hospitals, and other installations that require a flexible and efficient
headend solution.

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Operation Manual
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3.2.3 - “Pool” technology
3.2.4 - RF and IPTV distribution simultaneously
3.2.5 – RF Matrix support
3.2.6 - Fleex Embedded support
3.2.7 - Fleex Embedded support
One of the most state-of-the-art TS multiplexer is responsible of providing the “pool” technology feature as well
as to offer a variety of different features such as custom NIT/SDT creation, EPG over RF and IP, LCN and more…
Experience the best of both worlds with the Compact Line 2 headend solution, which offers simultaneous RF and
IPTV distribution. This cutting-edge system enables you to distribute content through both traditional coaxial
infrastructure (RF) and modern internet protocol television (IPTV) networks, providing unparalleled flexibility and
efficiency in content delivery.
Use Compact Line 2 headend series to control up to 99 x TV monitors over any coaxial infrastructure by having the
ability to change any TV channel (RFM-002 RF Matrix STB is required).
Enhanced guest experience with Fleex Embedded IPTV middleware enabling control of TVs from major brands
such as LG, Samsung, and Philips, and offering basic middleware functionality directly from the headend without
the need for external server.
Enhanced guest experience with Fleex Embedded IPTV middleware enabling control of TVs from major brands
such as LG, Samsung, and Philips, and offering basic middleware functionality directly from the headend without
the need for external server.

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Operation Manual
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3.3 – Product views
3.3.1 – Front panel view
1. IP LAN & Fleex Embedded control
2. RF output
3. RF input
4. Reset button
5. Status LED
6. IP streaming output

Compact Line 2 - Headend Series | SCL - 824CT / 834CT
Operation Manual
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1. Power input
2. DVB-S/S2/S2X/T/T2/C inputs
3. Air ways
3.3.1 – Back panel view

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Operation Manual
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4. INSTALLATION
4.1 - General
The SCL-824CT/834CT headend solution offers a highly user-friendly interface for programming and monitoring
purposes. To access the intuitive graphical user interface, simply open an internet browser, such as Internet Explorer,
Firefox, or Chrome, and enter the following static IP address: 192.168.1.200. This easy-to-use interface provides an
efficient way to manage and monitor your headend system, ensuring optimal performance and seamless content
delivery.
Once connected to the SCL-824CT/834CT headend device, you will be prompted to log in, as shown in the provided
image:
The default username and password for the device are as follows:
Username: admin
Password: 12345
Enter the default credentials to access the system’s user interface, where you can manage and monitor your
headend solution with ease.

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Operation Manual
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4.2 – Graphical User Interface (GUI)
Status
Every time you connect to the SCL-824CT/834CT headend device, the “Dashboard” page is automatically loaded,
providing a comprehensive overview of the device’s current status. This dashboard presents essential information
about the system’s performance and operation, allowing you to monitor and manage your headend solution
effectively.
4.2.1 - “Dashboard” page

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Operation Manual
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Status
Tuners:
RF Output:
Output Bitrates:
Logs:
In the Dashboard, users can easily monitor essential aspects of the device’s operation, ensuring smooth performance
and quick identification of any issues. The information displayed on the Dashboard includes:
1. Device temperature: Keep track of the device’s internal temperature to ensure proper cooling and prevent
overheating.
2. Fan working status: Monitor the performance of the cooling fans to maintain optimal operating conditions.
3. Multiplexer and Modulator engine status: Check the working status of the device’s core components for seamless
content processing and distribution.
4. System date and time: Verify the accuracy of the device’s internal clock for proper scheduling and event handling.
5. Main application status: Monitor the overall health and functionality of the device’s primary software.
Additionally, the Dashboard features four infographics that provide insights into:
1. Tuner lock status: Display the number of tuners currently locked onto a frequency for stable signal reception.
2. Device working mode: Show the operational mode of the device, indicating how it processes and distributes
content.
3. Number of TV programs distributed over RF: Display the count of TV programs being transmitted via RF (Radio
Frequency) channels.
4. Number of TV programs distributed over IP: Show the count of TV programs being streamed via IP (Internet
Protocol) networks.
In this section, users can monitor the working status of all the RF inputs of the device. This includes information on
whether they are locked or unlocked, their working mode, and their current settings.
This section allows users to view the working status of all the RF outputs of the device, such as the modulator’s
state, RF output frequencies, and modulation settings.
The device displays the output bitrates of all multiplexers in a chart format, enabling users to quickly assess the
data transmission rates for each output.
The Logs section provides a record of the last ten event logs, giving users a snapshot of recent device activity and
assisting in troubleshooting any issues that may arise.

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Operation Manual
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Status Device
At the bottom of the left menu of the device we’ve the following information:
•Status of the software application:
• Running: The application is running properly
• Initializing: The application initializes the headend device
• Stopped: The application has stopped working
•System’s current date and time
•System’s up time
•CPU and Memory usage by %

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Operation Manual
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Setup
4.2.2 - “Input” page
In the “Input” page, users have the ability to select the working mode for each input:
There are eight sections, one for each input. Users can configure the working mode of each input using the following
field:
Tuner – This field allows users to select the tuner’s working mode (DVB-S/S2, DVB-T/T2, DVB-C or Disabled)
For Satellite signal reception the user must select DVB-S/S2 mode from Tuner field and provide the following
parameters:
1. RF or IF Radio button – Select frequency input format
2. Frequency – Insert satellite frequency
3. Symbol rate – Insert satellite 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
For Terrestrial signal reception the user must select DVB-T/T2 mode from tuner field and provide the following
parameters:
1. Frequency – Insert the terrestrial input frequency or
2. Channel – Instead of inserting a frequency you can add the channel number
3. Bandwidth – Insert the input channel bandwidth
For DVB-C signal reception the user must select DVB-C mode from tuner field and provide the following parameters:
1. Frequency – Insert the input cable frequency
2. Symbol rate – Insert the symbol rate
3. Constellation – Insert constellation
Once all settings are being written for both tuners, the user must click the “Lock” button to begin the lock process.

Compact Line 2 - Headend Series | SCL - 824CT / 834CT
Operation Manual
© 2023 Lemco. All rights reserved. 15
More options
Tuner status
PCR correction – Enable / Disable to perform PCR correction of the input stream.
Comments – Text box to add any comments for this specific input.
For each input the SCL-824CT/834CT provides several information such as tuner status (Locked/Unlocked), total
bitrate, signal strength, quality etc as show below:
Tuner Status color Description
Green The tuner is locked
Yellow The tuner is unlocked
Red Error in the tuner
Blue Tuner is disabled
The tuner is locked
The tuner is unlocked
Error in the tuner
Tuner is disabled

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Operation Manual
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4.2.3 - “Program Selection” page
In the “Program Selection” page the user is able manage all the available TV programs of the device as follow:
Progress Bar
At the top of the page there is a progress bar depicting the analysis status of the multiplexer. When the progress
bar is at 100% it means that the multiplexer has successfully finished the analysis of all the available TV/Radio
programs of all locked inputs.
The device will display all the available TV/Radio programs that it has detected from all its input that are locked
to a DVB-S/S2/T/T2/C frequency.

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Operation Manual
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Export Options
Search
TV / Radio programs list table
The user is able to print or export the selected TV/Radio programs in Excel, .m3u or pdf file by clicking on the
appropriate button.
The headend provides the ability for real-time searching of any program from the list by using the following Search
field.
By entering any text in the search field, the list will automatically start to filter and display the available results that
match the entered text. This feature allows users to quickly find and sort through the programs or options they are
looking for, enhancing the overall user experience and simplifying the process of content management.
The TV/Radio programs list table provides the following field information for each program:
•PIDs – Submenu for PID filtering (see below)
•Input – Depicts from which input the TV/Radio programs is received
•Program Title – Displays the name of the TV/Radio program. At the same time the user can edit this field to
change it.
•Original Service ID – Depicts the original Service ID number
•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
•TS Output - To select in which multiplexer’s output the TV/Radio program will be assigned.
•Output Service ID – The user is able to provide custom Service ID number
•IP address – Set the IP address of the current TV/Radio program for IPTV streaming
•Port – Set the port of the current TV/Radio program for IPTV streaming
•Protocol – Select between UDP/RTP IPTV streaming protocol for the current TV/Radio
* Most of the fields provide Sorting options by using the UP/DOWN arrows

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Operation Manual
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Mass insert function
The IP address, port and Protocol fields offering quick setup by clicking the edit button as follow:
To massively insert IP addresses to selected TV/Radio programs follow the below steps:
1. Sort all the TV/Radio programs by clicking the DOWN arrow at “TS Output” column to sort all the programs that
you’ve selected to output from the device.
2. By clicking the edit button under the title of IP Address column the following pop-up window is displayed:
3. In the IP address field insert your starting IP address
4. If you want to copy the same address in all programs, choose the radio button “Copy the same ip address”. In
case you want to increment by one the last octet of the IP address choose the “Increment by one” option.
5. From the “Start from row” and “Rows to change” fields define from which specific rows the automatic procedure
will begin and it will end.
6. And click the “Apply” button.
Repeat the same process for Port and Protocol field.

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Operation Manual
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Program Selection
With the drop-down menu in the “TS Output” column, users can easily assign any TV/Radio program to any of the
four outputs of the headend. By following the same process for each program, users can create their own custom
multiplex for the four output channels. This feature provides a high level of flexibility and customization, allowing
users to tailor the headend’s output to their specific needs and preferences for content distribution.
PID Filtering
At the second column the headend provides the ability to make PID filtering by clicking the “burger” icon to
reveal the available PIDs for each TV/Radio program as show below:
By using the checkboxes, users can easily deselect any PIDs, instructing the headend to filter them out. This feature
allows users to manage and control which PIDs are processed and distributed, further enhancing the customization
and flexibility of the system according to their specific needs and preferences.
Caution!
TThe number of programs that the SCL-824CT/834CT 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 SCL-824CT/834CT outputs:
• Constellation: 64 QAM
• Guard Interval: 1/32
• Code rate: 7/8
• Bandwidth: 8 MHz
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.

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Operation Manual
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Status
Peak Detection mechanism
The status section provides a general idea to the user of the current payload (according to the selected programs)
comparing it to the max. output payload.
As shown above 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
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.