Marmitek X-10 User Manual download pdf (Page 5)

TWM4™

if wall outlets and lighting points are actually divided into several phases

(several groups is no problem for the Marmitek X-10 signal).

2. It is possible that Marmitek X-10 signals are attenuated by devices and

lights which are connected to the power line. In a normal home situation this

effect is negligible (the Marmitek X-10 system is using active gain control to

eliminate the effects). However, it is possible that a particular device in your

house is attenuating the signals so much that the range of Marmitek X-10

signals is decreased significantly. When you have range problems, it is wise to

try to locate the device which is attenuating the signals simply by unplugging

devices from the power line, and testing the differences in range for your

Marmitek system. When e.g. your conclusion is that e.g. your computer

monitor is attenuating the signal, you can use a FM10 Plug-in Filter between

the power line and the monitor to eliminate the effects.

Known devices which can cause attenuation are:

PC Monitors

PCs with heavy internal power supplies

Old Televisions

Copiers

Fluorescent Lights

Gas Discharge Lamps (Energy Saving Lamps)

3. Some (old) devices are able to disturb the signal by transmitting noise on

the power line. Because the Marmitek X-10 signals are transmitted on 120

kHz, only noise on or near this frequency will have influence on the range.

When you use a FM10 Filter to connect this device to the power line, the

noise will be filtered.

4. The Marmitek X-10 protocol has several mechanism to avoid modules to

be switched on or off by other sources than your Marmitek X-10 Controllers.

However, it is possible that the Marmitek X-10 signals are disturbed by e.g.

baby phones which are in TALK mode (continuous transmission). When these

kind of signals are present on the power line it is possible that the Marmitek

X-10 signals will not come through.

5. The mains do not stop at the front door of your home. Everything that is

attached to mains nearby your home can have influence on Marmitek X-10

signals (e.g. heavy machinery). If you think that your system is influenced by

devices out of your house, it is advisable to install FD10 Phase Coupler/Filter

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Marmitek X-10 User Manual Page 5