Sennheiser EK 2012 Instructions for Use - Page 18

Multi, channel, operation, External, power, supply, receiver, Operating, permit

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Multi-channel operation Operating permit The EK 2012 TV is also suited for use in multi-channel systems, provided that the following conditions are satisfied. 1. A minimum distance of 3 m is to be maintained between the transmitters and the receivers. 2. The frequency combinations must not contain intermodulation products of the third and fifth order. 3. Where a talk-back system is set up (for television reporters, for instance) the transmitter and receiver will unavoidably have to be located in very close proximity. This contradicts the condition prescribed at "1" above. Therefore, it will be necessary to work on frequencies which are at least 15 MHz apart. The use of wireless microphone systems is generally subject to local licencing or permit arrangements. For further details contact your local Sennheiser distributor. External power supply for the receiver Modifying the EK 2012 slightly makes it possible to supply power from an external source either through the antenna connector or the battery compartment. Detailed information can be obtained from your local Sennheiser distributor. 17

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Multi
-channel
operation
The
EK
2012
TV
is
also
suited
for
use
in
multi
-channel
systems,
provided
that
the
following
conditions
are
satisfied.
1.
A
minimum
distance
of
3
m
is
to
be
maintained
between
the
transmitters
and
the
receivers.
2.
The
frequency
combinations
must
not
contain
intermodulation
products
of
the
third
and
fifth
order.
3.
Where
a
talk
-back
system
is
set
up
(for
television
reporters,
for
instance)
the
transmitter
and
receiver
will
unavoid-
ably
have
to
be
located
in
very
close
proximity.
This
contradicts
the
condi-
tion
prescribed
at
"1"
above.
Therefore,
it
will
be
necessary
to
work
on
frequen-
cies
which
are
at
least
15
MHz
apart.
External
power
supply
for
the
receiver
Modifying
the
EK
2012
slightly
makes
it
possible
to
supply
power
from
an
external
source
either
through
the
antenna
con-
nector
or
the
battery
compartment.
Detailed
information
can
be
obtained
from
your
local
Sennheiser
distributor.
Operating
permit
The
use
of
wireless
microphone
systems
is
generally
subject
to
local
licencing
or
permit
arrangements.
For
further
details
contact
your
local
Sennheiser
distributor.
17