Netcomm Powerline Adapter 85Mbps User Manual download pdf (Page 19)

YML285 Powerline Adapters User Guide285 Powerline Adapters User Guide Powerline Adapters User GuidePowerline Adapters User Guide

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NetComm Powerline

Series - Powerline Adapters 85Mbps Twin Pack

Security

Can my neighbour listen to my data when he is connected to the same power supply?

Your electric meter dampens the signal enormously and represents a natural barrier from your neighbour.

However, if you have power supply lines lying unfavourably close to your neighbour’s power lines, it is possible that your neighbour will benet from

an unintentional phase coupling. We therefore strongly advise you to use the internal device security encryption! By using the Conguration Utility,

enter a network password (that is different from the factory default) and activate the encryption. This will stop eves dropping.

How safe is my data? Is it possible to tap into it in some way?

We strongly advise you to enable the internal device security encryption! This will only allow other NP285 Powerline Adapters to communicate with

each other, providing they have the same password.

Technical

What is the power consumption (in watt) of the NP285 Powerline Adapter from the 240 volt power supply?

The power consumption of the NP285 Powerline Adapter is 3.6 watts, drawn from the power supply system.

On which level does the NP285 Powerline Adapter transmit?

The transmitting power spectrum is -50dBm/Hz, on amateur radio frequencies -80dbm/Hz, with a bandwidth of about 17MHz and that is about

+22dBm (160mW) or about -8dBm (160uW) (all values based on 50 Ohm). As the coupling is symmetrical, only a small part of this performance is

radiated.

Is the NP285 Powerline Adapter compatible with Powerline devices from other manufacturers?

To obtain the optimum performance and usability, we recommend that you only use the NP285 Powerline Adapter. They are tested and have

proven interoperability.

Furthermore, the NP285 Powerline Adapter is also compatible with the HomePlug1.0 standard, i.e. it operates with all other devices being

compatible to this standard.

In my house there are three separate phases. Can the NP285 Powerline Adapter connect one phase to another?

Yes, it can. Phase coupling operates without the installation of a phase coupler using the NP285 Powerline Adapter. You also can establish your

network connections via two or three phases.

I’m living in a very old house with old power supply lines partly without a separated earth wire. Does the NP285 Powerline

Adapter operate in this circumstance?

The NP285 Powerline Adapter will also operate correctly in this case.

Can I plug the NP285 Powerline Adapter into an extension cable or into a multi socket power board or do I have to plug it directly

in the wall socket?

Yes, you can plug the NP285 Powerline Adapter into an extension cable or into a multi socket power board, but remember, the greater the

number of cables and power boards you have the greater the possibility of performance issues.

Do I have to worry about an electric shock from the Ethernet connection?

No, you don’t have to. The two electric circuits are separated from each other.

On which frequencies does the NP285 Powerline Adapter operate? Does this technology interfere with the amateur or normal

Radio reception?

Typically, today’s radio reception (FM) takes place in the range of 87.2 to 108MHz. The frequencies used by the NP285 Powerline Adapter are in

the range of 4MHz to 21MHz so they cannot interfere with your radio reception.

The technology is based on the HomePlug standard in which the transmitting levels are specically lower in the amateur radio band. The

transmitting level is very low and by symmetrical coupling only a small part of this power will be radiated by the power grid.

Is there a risk that electromagnetic interference will be distributed all-over the house, even to the neighbours, when using the

NP285 Powerline Adapters?

The NP285 Powerline Adapter is tested to the same norms as other electric devices (C-Tick and EMR). The NP285 generates the same noise

level as other electrical equipment. The NP285 Powerline Adapter does not produce any more interference than a modern electric power drill.

House hold power circuits operate at 50Hz. Is it possible to achieve reasonable ping times in the range of milliseconds?

The NP285 Powerline Adapter doesn’t operate at the 50Hz alternating frequency. It operates in the Megahertz (MHz) range. Hence the ping times

are in the range of msec.

Is the data carrier rate high enough for a conventional DSL connection?

The bandwidth of the NP285 Powerline Adapter depends on the interferences on your power cabling and of the quality of the electrical installation.

It ranges from 14 MBit to 85 MBit (a conventional DSL connection has 0.512 MBit download and 0.128 MBit upload rates). This is quite sufcient

for extending a DSL connection to all the rooms in your house.

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Netcomm Powerline Adapter 85Mbps User Manual Page 19

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