devolo dLAN® 200 AVpro Project Manual
17
Fig. 3-15: Bypassing an amplifier with an active bypass
3.5.5 Bypassing amplifiers (passive return path on the amplifier)
An amplifier with passive return path is to be used. You may be able to achieve this
by switching the return path module from active to passive. You may not know the
return path attenuation for this option. If you do, always set the attenuator on the
return path to 0.
Warning! Some amplifiers tend to oscillate due to insufficient blocking
depth on the diplex filter fitted. If possible, you should give preference to
the options described in Sections 3.5.3 and 3.5.4!
Fig. 3-16: Bypassing an amplifier over a passive return path on the amplifier
3.5.6 Using filters (high pass)
We recommend using one or more high-pass filters (not included in delivery for
standard accessories),...
...to decouple the signals on the devolo dLAN 200 AVpro deployed from the
TV signal transfer point,
...to physically segment individual devolo dLAN 200 AVpro networks on
a coaxial network.
The following Fig. 3-17 shows an example of the physical segmentation of a dual
dLAN network with the help of a combination of diplex and high-pass filters in each
case (here, a HPF 85-1000 with a blocking depth of > 70 dB).
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