Sennheiser EM 3731 - Manual (Page 18)

16
Putting the receiver into operation
Mounting and connecting remote antennas
Use a remote antenna (available as accessories) when the receiver
position is not the best antenna position for optimum reception.
̈
Connect the remote antennas to the BNC sockets O and R at the rear
of the receiver using a low-attenuation 50-
Ω coaxial cable.
Note:
Ready-made antenna cables from Sennheiser are available as
accessories with length of 1 m, 5 m and 10 m (see “Accessories/spare
parts” on page 43).
̈
If you connect active antennas (e.g. A 3700, AD 3700) or antenna
boosters (e.g. AB 3700), switch the DC supply voltage for external
active antennas and antenna boosters on (see page 30) so that the
LEDs
N and S light up; if you do not connect active antennas or
antenna boosters, switch the booster supply voltage off so that the
LEDs
N and S do not light up.
Note:
If the booster supply voltage is switched on (see page 30), it remains
switched on even when the receiver is switched off.
̈
Position antennas in the same room in which the transmission takes
place! Maintain a minimum distance of 1 m between antennas and a
minimum distance of 50 cm between antennas and metal objects
(including reinforced concrete walls)!
Daisy chaining receivers
The receivers feature an integrated antenna splitter so that up to eight
receivers can be daisy chained using the supplied short antenna daisy
chain cables. The label
V indicates the daisy chained frequency range.
̈
Connect the two supplied telescopic antennas or two remote antennas
(available as accessories) to the BNC sockets
O and R at the rear of
the first receiver.
̈ Use the supplied 50
Ω antenna cables to daisy chain the receivers as
shown in the diagram on the left.
Note:
The antenna signals are also daisy chained when a receiver is switched
off. If the booster supply voltage is switched on (see page 28), it
remains switched on even when the receiver is switched off.