CoaxData SECTION_ENG.indd - Hertzinger

COAXDATA

2012

COAXDATA

2 Coaxdata

CONTENTS

1. Ethernet coaxial adapter.

1.1 Coaxdata homeplug.

1.2 Physical description.

2. Home networking.

3. Home networking - Examples of application.

3.1 Home networking.

3.2 PLC option.

3.3 Hybrid option.

4. Shared distribution networks.

5. Coaxial network checking.

6. Coaxial network checking steps.

7. Shared distribution networks - Examples of applications.

7.1 Small/Medium shared distributions networks.

7.2 Using several master modem at the headend.

7.3 Making individual installations of home-networking in a number of dwellings of a building.

7.4 Establishing AVLNs.

8. Professional and special applications.

9. Shared distribution networks - line amplifi ers.

10. System management.

11. Coaxmanager software.

12. Snmp (simple network management protocol) with web interface.

COAXDATA

The bandwidth of the coaxial cable allows to multiplex a number of services other than televison.

Coaxdata is a state-of-the-art system that converts a television coaxial network into a high speed local network. By means of Coaxdata, sharing resources (computers, printers, an internet connection, etc) does not need any additional cable.

COAXDATA

4 Coaxdata

slave

85 dB

85 dB85 dB

85 dB

master

slaveslaveslave

ETHERNET COAXIAL ADAPTER

Coaxdata HomeplugThe Coax Data 200 Mbps-HDTV adapter makes the transmission of data possible over the existing electrical and/or coaxial distribution. The use of the already existing coaxial network infrastructure allows for a rapid, easy and economic installation of the system, without the need for construction.

▶ Transfer of up to 200 Mbps, ideal for uses such as VoIP, telephony, Internet TV, VoD, shared access to Internet and IP data communications in general.

▶ Integrated quality of service (Quality of Service, QoS) for prioritisation of the data. All this guaranteeing ideal transmission and maximum safety by means of the 128bit AES coding.

▶ Flexible and upgradable solution for the construction of segments of up to 253 devices. In the MDU/MTU mode over coaxial alone, there is the possibility of using up to 4 Masters in the same frequency band (1012 slaves).

▶ No changes are necessary in the topology of the coaxial network to coexist with existing TV services. Coaxial cable high attenuations (~85dB) are supported. Coaxial cable lengths up to 800m are supported as well as power line lengths up to 200m .

▶ Remote management is possible by means of the Coax

7689

Multipoint-To-Multipoint

Point-To-Multipoint Home Networking with automatic confi guration master/slaveThere is no conection between slaves

MDU/MTU

Reference 7689ConnectorizationEthernet interface

type2 × RJ45

Coaxial interface 2 × F(TV+data)Data coaxial interfaceBandwidth MHz 2-30Output level dBμV 130Min. power spectral density dBm/Hz -135Output impedance ohm 75TV coaxial interfaceBandwidth MHz 57-2150Through losses dB 2Return losses dB > 10Output impedance ohm 75Power/TemperatureMains voltage (50/60 Hz) Vac 100-240Max. consumption W/mA 4.6 / 45Operating temperature ºC -10 to +45Firmware

Max. number of slaves no. 253 (1012 using 4 masters)

Max. length of data network

Coax cablem

800Power line 200

Users per slave no. 2

85 dB85 dB

85 dB

85 dB85 dB

Manager Software included in the CD and Control Access Software.

▶ This allows confi guring the devices with the parameters that the installer may require:

Operating mode [Home Networking or MDU (Multi Dwelling Unit) / MTU (Multi Tenant Units)]

QoS parameters

Access code to the network

And many other possibilities of adjustment.

▶ User Manual is included in the CD which comes with the product.

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5 Coaxdata

Ref. 7654

the Internet

TV + data

factory

reset

Medium connectivity switch

Ethernet 10/100 Mbps

Coax / Hybrid

Coaxial Link Status

Coaxial & Electric cables

Coaxial cable only

Coaxial cable

Electric cable

120 Mbps < throughput

70 Mbps < throughput < 120 Mbps

0 Mbps < throughput < 70 Mbps

TV

ETHERNET COAXIAL ADAPTER

Physical description

Examples of application - Home Networking

BASIC INSTALLATION

Coaxial option.

One of the most typical applications of the CoaxData-200Mbps-HDTV modem, is used to share the services of your Internet provider at home.

Using the modem, you will get access to the services provided by your ISP such as the Internet access, video streaming or VoIP throughout the home without requiring additional infrastructure.

The following diagram shows a prototype facility in which a user can access the diff erent services provided by the Internet, anywhere in the house.

You can also share printers and media servers located in other rooms of the same. Share printer, NAS Media Server, the Internet, ... on the same network

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6 Coaxdata

Examples of application - PLC option

Examples of application - Hybrid option

the Internet

MAINS

the Internet

MAINS

the Internet

BASIC INSTALLATION

The Coax Data 200Mbps-HDTV adapter is factory confi gured to be able to perform a Home Networking plug-and-play installation. This allows for the creation of an LAN, where all the devices communicate with each other (peer-to-peer).

In this application it is used the electric network infrastructure of the house for data trnasmission (PLC).

The main benefi t of this application is based on the fact that the electrical network reaches every corner of the home.

BASIC INSTALLATION

The Coax Data 200Mbps-HDTV adapter is factory confi gured to be able to perform a Home Networking plug-and-play installation. This allows for the creation of an LAN, where all the devices communicate with each other (peer-to-peer).

In this application it is used both coaxial cable and electric infrastructures of the house for data trnasmission (COAX + PLC).

In other words, whichever electric or coaxial outlet can be a LAN point.

HOME NETWORKING

COAXDATA

7 Coaxdata

SHARED DISTRIBUTION NETWORKS

Coaxial network checking

Before to enface any shared distribution network to be equipped with the capability for distributing data using the modem ref. 7689, it is nesessary to know if that particular network has its return path in conditions to distribute data.

Some test equipment is necessary to carry out this job:

• Field Strength Meter, with good specifi cations as to measure the noise in the return path like our H45.

• Return path simulator ref. 7637

• Diplexer fi lters ref. 7654.

Our Field Strength Meter H45 meets all the requirements to do this job.

The fi rst step is check the output of the Return Path Simulator with the H45 Meter and record it a a reference for further measures.

Set operating

mode to 7

0 123

456

7

Simulador canal de retorno

0 123

456

7


H45

7637 7654

COAXDATA

8 Coaxdata

is

on


Coaxial network checking steps

CTRL

PWR

Ref. 7654

Ref. 7654

Ref. 7654

Ref. 7654

The aim of all these steps is checking the status of the return path and determine if it is in conditions to transmit data information.1st STEPDisconnect the output of the Headend and check the quantity of noise generated by it in the return path 5-30 MHzBy means of the meter H45 it can be measured and must be equal or less than 50 dBμV.2nd STEPNext, make the same measure but this time for the distribution network.It is performed by connecting the H45 to the input of the distribution network and checking that the noise generated by all its elements into the return path 5-30 MHz never exceeds 25 dBμV.3rd STEPCheck the attenuation of the distribution network for the return path between the input of the distribution network and the worst case for conecting a modem 7689. It must be equal or less than 80 dB.

CTRL

PWR

Ref. 7654

Ref. 7654

Ref. 7654

Ref. 7654

Ref. 7654

Ref. 7654

Ref. 7654

Ref. 7654

0 123

456

7


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9 Coaxdata

Examples of applications

Small/Medium shared distributions

These type of networks used to work having a master to control the rest of modems.

The Coax Data 200Mbps-HDTV adapter is an ideal device for Networking country Houses and small Hotels, where a master is controlling the streaming of information between the diff erent slaves.

This way it can be enabled/disabled any of the CoaxData adapters by using a software of control.

master

slave

slaveslave

slave

slave

master

slaveslaveslave

Using several master modem at the headendWhen there are several downlead coaxial sections, as it happens in most of the large multi-dwellings buildings, you can install several masters at the headend of the coaxial distribution network. Each master serving an independent coaxial downlead.

• In this case, we must note that there are several diff erences with respect to facilities in which are established several AVLN.

• The installation of several masters at the headend increases the eff ective data-rate that the network is able to support,

where each data network is created in a independent coaxial distribution, which increases the total system capacity by facilitating the development of video streaming or IPTV.

• The master modems installed at the headend do not have to be confi gured with diff erent network password since they operate separately on each coaxial distribution networks.

• To increase the isolation between these master modems, use the fi lter diplexer ref. 7654 for mixing TV signals and data.

• In this type of schemes is also necessary to take into account the losses suff ered by the TV signal in the process for multiplexing TV+Data signals; this is so because of the need to chose the right type of taps for the distribution network.

Internet

Ref. 7654Ref. 7654Ref. 7654 Ref. 7654


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10 Coaxdata



Making individual installations of home-networking in a number of dwellings of a building.

Even though the outlets shall be properly isolated to prevent that each one of the dwellings interfere with each other in TV services and data, depending on the conditions of its installation, they may not be adequately isolated; and then the data networks installed at the dwellings of the building will get interferences with each other.

In this case, you must install a diplexer fi lter 7654 at the entrance of each dwelling coaxial network in order to avoid that each of the nearby networks interfere with each other, and that the noise of the head interferes with the quality of the links.

The installation of these diplexers allow to determine the perimeter in which the master serves a data network and allows installation of multiple networks within a building or

dwelling.

Additionally, if it is not possible to install the fi lter, or suspect that your system is being aff ected by a close network and interfering with the quality of links, fi rmware 7689 provides a mechanism

called additional mitigation that detects nearby networks and adjusts its transmit power and receiver sensitivity to reduce the eff ect that networks have with each other.

To do this, by running the CoaxManager program, you can confi gure coaxData devices to detect nearby devices belonging to another diff erent network, what is known as mitigation.

Of course, the CoaxManager program must be enabled (☑)

Network 1

Network 2

diplexer ref. 7654

tap

tap

tap

diplexer ref. 7654

ref. 7654

ref. 7654

slave

master

slaveslaveslave

slave

master

slaveslaveslave

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11 Coaxdata



slave

master

slaveslaveslave

Establishing AVLNs

The ref. 7689 allows the installation of up four masters at the headend, which increases the potential number of modems that can be installed, but at the expense of total bandwidth to share. Each of the networks created by a master is called AVLN (AV logical network) and is established using diff erent Network Passwords.

This password is set by means of the CoaxManager program,

by setting MDU/MTU as the operating mode of the modem.

The password must be diff erent in each of the masters, and each slave must be programmed with the master password with which the slave wants to communicate.

There is a limit to the maximum number of modems that can manage an AVLN (1 Master + 253 Slaves).

By using 4 master modems, it can be increased the limit of slave modems up to 4x253 = 1012 slaves.

When carrying out the installation of multiple masters consider the following:

• Always use the diplexer ref. 7654 for TV and data signals, in order to ensure that the noise introduced by the headend in the return channel does not aff ect the quality of links.

• Do not forget to schedule diff erent passwords on each of the masters to create diff erent AVLNs.

• Do not forget to program the password of each one of

the slaves with the corresponding one to each of the masters. If the slaves are not programmed with the appropriate password, they will not able to communicate with any master.

• You can check the status of each of the networks by running the CoaxManager program. To do this, you have to communicate with each one of the masters modem and verify the attenuation and the payload by simply connecting a laptop to the switch and running the program CoaxManager on each of the masters modem.

Internet

Ref. 7654

Up to 1012 slaves working on the same coaxial distribution network.

diplexer ref. 7654

Headend

dataTV

Slave AVLN _ISlave AVLN _III

Slave AVLN _IISlave AVLN _IV

MastersAVLN _IAVLN _IIAVLN _III AVLN _IV

CoaxManager programControl Accessswitch with port isolation

4 way splitter

router

tap

tap

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12 Coaxdata

Systems like these will need a support engineering for the design and installation, for example:

• MATV/SMATV large distributions

• small/medium CATVs

• small/medium HFCs

• and, in general terms, distributions over coaxial cable in buildings, medium and large hotels, housing management companies, residential homes, schools, hospitals, cruise ships, safety technology.

The system uses the return channel coaxial passive network, and a determining factor is a maximum attenuation of 85 dB between points.

For setting up these professional systems it is necessary to keep in mind a number of common characteristis to guarantee the success of the job.

• The presence of line amplifi ers to re-amplify the TV signalThe data transmission system on which is based the ref. 7689 technology works in the frequency range 2-30 MHz, and is a bidirectional system since it generates signals coming either from the slaves connected to the outlets or from the master located at the headend.This implies that the return channel line amplifi ers should be passive in order to ensure the bidirectionality of the return channel. It will be exposed an installation scheme on which are used two modems (ref. 7689) in a confi guration called “Repeater” which allows propagate and regenerate the data signal.

• Large number of users and outletsThe existence of a large number of outlets generates an increasing of the interfering noise in the return channel. This noise may appear in the outlets to a lesser degree, and decisively at the headend, because, being a tree confi guration, the headend will add noise in each of the branches.

• Headend elementsCATV networks are characterized by the existence of

headend elements with high output signal levels, such as channel processors, modulators, etc .... The existence of these elements would cause that, if they are poorly fi ltered, can add noise in the return channel of the network, thus aff ecting the master modem operation and leading to lower links quality.

A professional network is diff erentiated by the need to use the management application/CoaxManager control included with the product. This software must be installed to adjust the product to certain characteristics that are out of the factory settings.

The mode MDU/MTU (Multi-Dwelling/Multi-Tenant Unit) for complex installations, allows the use of the adapter 200 Mbps Coax-Data-HDTV in any coaxial network topology.

This mode implements communication over a coaxial network in buildings, houses, hotels ..., establishing point to multipoint communication.

To make these complex systems to work, the device must be confi gured either as master or as slave. Both functions can play the ref. 7689.

Master is the element that is usually installed in the distribution headend to manage all network elements. Can be connected to an ISP (Internet Service Provider) to provide Internet access.

A Slave is the element that provides the access point to the user.

Professional and special applications


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T3

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T26

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Example of a professional applicationThe fi gure below illustrates a typical distribution of a complex consisting of bungalows spreaded over an area of 375×375 square metres approximately.

This represents a professional solution to deliver at eact bungalow a complete menu of services:

• TV broadcast (QAM, COFDM)

• IPTV

• the Internet

• Video-On-Demand (VoD)

• Triple Play (VoIP)

The router is located at the Headend, where a master modem ref. 7689 controls the rest of modems that are operating as slaves.

The challenge is just to desing a network in such a way that the maximum attenuation in the worst case never will be higher than 85 dB between the master and any of the slaves all along the network.

Data transmission is performed making use of the PASSIVE return path of the network (2-30 MHz).

This case study considers a network of 130 bungalows. That is, 130 units of the reference 7689 working as slaves of the master unit located in the headend. The master unit can handle up to 253 slave units, so the system could be signifi cantly larger, always subject to the condition of 85 dB of maximum attenuation.


COAXDATA

14 Coaxdata

In the likely event that there are line amplifi ers for signal reamplifi cation on networks, caused by losses of coaxial cable and distribution components, it is necessary to ensure the coexistence of the data network with these amplifi ers.

Many times, line amplifi ers tend to be unidirectional, ie only amplify the TV signal from the headend to the outlet of the user (forward channel).

This fact prevents data communications, since this is a bidirectional system, and we need a communication between the headend and the outlet, and vice versa.

To overcome this problem, the are several proposals that will be exposed in next paragraphs and illustrations. Let us review all possible situations as well as the procedure to solve them.

Passive return channel inside the amplifi er.

The fi rst task will be always make tests to be sure that the network is ready to accept the installation of CoaxData modems; as it has been explained previously, making use of a professional Field Strength Meter like our H45, diplexers, Return Channel Simulator device and the corresponding CoaxManager software.

If the amplifi er is featured with the possibility of inserting a Passive Return Path Module, there is no nothing more to do. The system will function for both forward path and return path.

Shared Networks - Line amplifi ers


CTRL

PWR

Ref. 7654

Ref. 7654

Ref. 7654

Ref. 7654

Slave

The Internet

DiplexerTV - DATA

Line amplifi er with the possibility of changing its confi guration; ready to be equipped with a Return Path module.

Slave

Slave

Master

COAXDATA

15 Coaxdata


CTRL

PWR

Ref. 7654

Ref. 7654

Ref. 7654

Ref. 7654

Passive bypass by using diplexer fi lter ref. 7654.

First of all, make tests to be sure that the network is ready to accept the installation of CoaxData modems.

By using this confi guration it is kept the structure Master-Slave and the Remote Access Management as well.

Slave

The Internet

DiplexerTV - DATA

Line amplifi er with the possibility of changing its confi guration; ready to be equipped with a Return Path module.

Slave

Slave

Master


COAXDATA

16 Coaxdata


CTRL

PWR

Ref. 7654

Ref. 7654

Ref. 7654

Ref. 7654

Bypass using the modem ref. 7689


This confi guration allows to reach longer distances since the use of a new master after the amplifi er, extends again those 85 dB extra attenuation allowed between the master and the slave.

The tradeoff is the impossibility of remote managing since there is a intermediate step to Ethernet.

Slave of Master 1

The Internet

DiplexerTV - DATA

Slave of Master 1

Slave of Master 1

Slave of Master 2

Master 1

Master 2


COAXDATA

17 Coaxdata

CTRL

PWR

Ref. 7654

Ref. 7654

Ref. 7654

Ref. 7654



Slave of Master 1

The Internet

DiplexerTV - DATA

Slave of Master 1

Slave of Master 1

Slave of Master 2

Master 1

Master 2

Bypass by using the modem 7689 and the diplexer fi lter ref. 7654.- High isolation.


In this case it might happen that there were not enough isolation. Then it could be used the solutions already seen for cascade.

COAXDATA

18 Coaxdata

CoaxManager Software

▶ QoS parametres confi guration.

▶ MACs (Media Access Control) limitation per Slave.

▶ IGMP (Internet Group Management Protocol) confi guration.

▶ Detailed status link information, i.e SNR attenuation and tonemap list; allowing to get an itemized view of the installation performance.

▶ Firmware updating.

SYSTEM MANAGEMENT

Scaning & confi guration window

This CoaxManager Software tool allows setting the operating mode and system parametres, as well as check either the network status or links of each device. Ad-hoc software development option i.e, management.Networking or MDU/MTU (Multi Dwelling Unit/Multi-Tenant-Unit).

▶ Create private networks (encryption).

network checking window

line quality window

advanced users QoS window

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19 Coaxdata

SNMP (Simple Network Management Protocol) with Web interface

Allows the remote magement of professional networks:

▶ Allows to confi gure the access mode of the coaxial modems CoaxData 200 Mbps, in such a way that a device can be enabled/disabled, set the access parameters like bandwidth and the number of user per modem.

▶ Lets you check the status of a network by determining the rate estimated between the links of the diff erent devices.

▶ It allows the generation of alarms that alert the user of any incident like the loss of a device link, its poor quality, as

well as the access to the current state of the network.

▶ The system confi guration can be accomplished using the SNMP protocol itself or through a simple Web interface for users without technical knowledge of this protocol. To do this it is provided a complete MIB (Management Information Database) specifi cation that defi nes all the SNMP objects implemented by the agent.

▶ Automatic sending of emails for tracking the system and notifying incidents coming from either the management system or the devices.

SYSTEM MANAGEMENT

Internet

Access control setting-up requirementsFor the installation of the SNMP access control is necessary a PC with a Windows operating system NT/2000/XP/Vista/Windows7 and an Ethernet Network Interface.

The scheme of installation of the application is shown in the fi gure above.

▶ The PC where it is installed the access control must be connected to the master (s) of the network.

▶ The mode of operation of all installation modems will be MDU / MTU. If it is installed the access control and some

modem is confi gured as networking mode, the system sends an alarm to indicate that the modem is operating in a wrong way.

▶ In the event that multiple masters have been installed on the network, do not forget to ensure that the insulation between them in the return channel is greater than 80dB. If necessary, use the fi lters diplexers Ref.7654 between each coaxial networks.

▶ In the event that multiple masters are installed, be sure that the Switch that interconnects them must have activated the port isolation feature.

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20 Coaxdata

SYSTEM MANAGEMENT


SNMP Agent

The devices menu shows all modems detected by the system, indicating their MAC address and link state, as well as the possibility to confi gure their access parametres.

Enabling or disabling modems ir performed by using the Enable/Disable option. When a modem is disabled, it is indicaetd by a red circle.

To Eliminate a modem from the list just make use of the option Delete on the Access Control List

Description MAC Address Link State Access State Confi gure access

Master I 00:0E:7C:15:01:CE Enable Changeconfi gure access

Master II 00:0E:7C:15:02:00 Enable Changeconfi gure access

ROOM 101 00:0E:7C:15:01:ED Enable Changeconfi gure access

ROOM 102 00:0E:7C:15:01:3C Enable Changeconfi gure access

ROOM 103 00:0E:7C:15:02:66 Enable Changeconfi gure access

ROOM 104 00:0E:7C:15:02:07 Enable Changeconfi gure access

ROOM 105 00:0E:7C:15:02:4A Enable Changeconfi gure access

ROOM 106 00:B0:52:00:00:17 Enable Changeconfi gure access

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SYSTEM MANAGEMENT


This interface allows confi guring the generation of traps to receive mails in a specifi c mail address. It also allows activating/deactivating the alarms of the system.

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22 Coaxdata

Sede CentralRúa B. de Conxo, 1715706 Santiago de Compostela (SPAIN) T. 902 686 400 F. 981 52 22 62 [email protected] - www.televes.com

COAXDATA

2012

Documents

CoaxData SECTION_ENG.indd - Hertzinger