devolo dLAN® 200 AVpro Project Manual
16
Fig. 3-13: Example configuration with actual components
Amplifier bypasses can also be cascaded. Take note of the attenuation budget for
the devolo dLAN 200 AVpro adapter. The following figure illustrates a 3-level
cascade. Note that the amplifiers are much further apart in reality than in the
illustration.
Fig. 3-14: 3-level amplifier cascade with passive bypass
3.5.4 Bypassing amplifiers (active bypass)
The amplifier is bypassed using two devolo dLAN 200 AVpro adapters and an
Ethernet cable. Make sure that there is enough stop-band attenuation on the diplex
filters (e.g. Comega, ) here. Frequently, they only have 35dB stop-band attenuation.
This is why a high-pass filter (> 50 dB stop-band attenuation) needs to be fitted in
the direction of amplifier's output and input. A separate logical network segment
begins/ends before and after the amplifier. For TV, a pass-through attenuation of
approx. 2 x 0.5 dB (diplex) + 2 x 0.8 dB (high-pass) should be taken into account.
Since the connection functions like a repeater, this configuration is
well-suited to bridging large distances.
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