Lemco MLH-101 Bedienungsanleitung
© 2020 Lemco. All rights reserved. 1
Manual
v.1.1
www.lemco.gr
DTV - Headend
MLH-101
4 x HDMI to 4 x DVB-T/C
www.lemco.gr
DTV - Headend | MLH-101
Manual
© 2020 Lemco. All rights reserved. 2
Contents
Important safety precautions information p. 3
Introduction p. 5
Installation p. 9
Technical specifications p. 27
Warranty p. 30
Notes p. 35
DTV - Headend | MLH-101
Manual
© 2020 Lemco. All rights reserved. 3
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
DTV - Headend | MLH-101
Manual
© 2020 Lemco. All rights reserved. 4
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.
DTV - Headend | MLH-101
Manual
© 2020 Lemco. All rights reserved. 5
2. INTRODUCTION
Congratulations on purchasing the MLH-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 MLH-101 is a very powerful, all-in-one mini headend device, able to receive up to four (4) HD signals and con-
vert them either 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 four (4) inputs
and assign them to any of the four (4) RF outputs providing great flexibility.
The embedded web server of the MLH-101 provides a very friendly user interface as well as the ability of remote or
local control of the device via LAN.
Its small size and its powerful features render the MLH-101 the ideal solution in case we want to distribute HD con-
tent eg. coming from STBs or blue ray to a CATV installation using the DVB-T/C.
3.2 - FEATURES
• 4 x HD inputs
• HDCP v1.4 support
• 4 x RF output DVB-T/C (software selectable)
• “Pool” technology
• MER value > 42dB
• Dual power supplies offering redundancy mode
• Custom NIT/SDT
• Local or remote control via webserver
• Very friendly user interface
• Wall or rack mount options
• Ultra-compact size
• 5-year warranty
3.2.1 - Auto-reset functions and watchdog
During the normal operation of the MLH-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 MLH-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.
DTV - Headend | MLH-101
Manual
© 2020 Lemco. All rights reserved. 6
3.2.5 – Dual power supplies
The MLH-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.
3.2.2 - “Pool” technology
The MLH-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 four (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 MLH-101 without
the need of any firmware upgrade.
3.2.4 – Custom NIT/SDT
Using the MLH-101 the user is able to create custom NIT and SDT tables according to his needs.
DTV - Headend | MLH-101
Manual
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3.3 - BLOCK DIAGRAM
4 x DVB-T/C
HDMI
HDMI
HDMI
HDMI MLH-101
DTV - Headend | MLH-101
Manual
© 2020 Lemco. All rights reserved. 8
3.4 – Product drawing views
1. HDMI inputs
2. Reset button
3. Status LED
4. LAN control
5. RF output
6. Dual power supply inputs
7. Fan cooler
DTV - Headend | MLH-101
Manual
© 2020 Lemco. All rights reserved. 9
4. INSTALLATION
4.1 - General
4.2.1 - “General” page
Status - Inputs 1…4
The MLH-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 HD input e.g. if the H.264 encoder is running or if it is in idle
state, its Service name, its Service ID, video/audio PID and LCN number.
4.2 - Embedded Webserver
Status
• Figure No 1
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
DTV - Headend | MLH-101
Manual
© 2020 Lemco. All rights reserved. 10
This section provides general information of the device, like internal status of all device’s modules, CPU temperature
and fan state as well as error codes for troubleshooting purposes.
System
4.2.2 - “Program list” page
In “Program list” page (Figure No 2) the MLH-101 provides information of all programs that are currently being
distributed via its four RF.
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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