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Diversity
1.2
Every EM 1046 RX receiver module operates on true diversity.
An antenna splitter, integrated into the chassis, serves to route the
antenna signals from both antennas to the three receiver modules.
The receiving antenna not only receives direct electromagnetic waves,
but also reflections from walls, windows, ceilings and other installations,
which results in the cancellation of these waves, so-called „field strength
gaps“. Repositioning the receiving antenna is a possible remedy,
provided the transmitter remains in its original position. However,
as most transmitters are used for portable applications, the
„field strength gaps“ then occur in other positions. The effects of
field strength variations can only be eliminated through the use
of true diversity techniques.
Sennheiser’s specially developed diversity system is based on two
receivers operating on the same frequency and two separate antennas.
A comparator ensures that the receiver with the strongest RF signal is
automatically and noiselessly switched to the AF output. Diversity
operations can compensate for considerable variations in field strength,
thus providing an enormous gain in transmission reliability.
Nota bene: Every single EM 1046 RX receiver module incorporates two
receivers for diversity operation.
Automatic electronic switching
of audible frequency signal
Receiver 2
Receiver 1
Control signal
Steuersignal
Control signal