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Installation and Safety Instructions
CAUTION
Risk of material damage when operating the device in inappropriate ambient conditions!
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Install the device in dry indoor areas only.
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Do not install on or against highly combustible materials.
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Equip the device with an equipotential bonding conductor (Cu, at least 4 mm
2
).
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Make sure to comply with the safety regulations set out in the current EN 60728-11 and EN 62368-1
standards.
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Cap the ports that are not used (for compliance with the regulations on radiated interference)
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Fixings: Wood screws, max. Ø: 4.0 mm
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Connectors: RF connector 75 Ω (F series) to EN 61169-24.
Installing the Device
Installing the Amplifi er in a Satellite Reception System
The VWS 2900 amplifi er is used at the input to large multi-switch cascades or as a cascadable distribution network
amplifi er for balancing the through losses of cables, splitters or distributors in large distribution networks.
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Ensure that the level at the input lies between 50 and max. 80 dBµV and that the downstream multi-switches are not
overloaded.
Levelling the Amplifi er
To determine the level, an antenna meter is suited best,
e.g. the MSK 130. You can adjust the gain in 1-dB steps
(see fi gure on the right). The attenuator affects all four
amplifi er units in the satellite range at the same time.
To equalise attenuation slopes, e.g. in long cable lengths,
it is possible to set the amplifi er’s pre-equalisation to 2, 4
and 6 dB. The terrestrial amplifi er is adjusted with its own
attenuator.
Connecting the Amplifi er to Other Devices
Within the Satellite Reception System
The easiest and quickest way to connect the amplifi er
to, e.g. a loop-through multi-switch is to use the optional
connector EMU 290 (see picture on the right).
This enables the devices to be connected to each other
directly.
If the devices are further apart from each other, we recom-
mend using high-quality coaxial cables with very high
screening values, e.g. LCD 111 A+.
If possible, use high-quality F-type connectors (picture
on the right, self-installed connectors) or compression
connectors; see also the Kathrein catalogue “Cables and
connectors from Kathrein – always a good connection”.
