Remote Supply Of The Antenna Amplifier Via The Control Unit - Beyerdynamic MCW-D 200 Operating Instructions Manual

Cable attenuation of different cables in 2.4 GHz applications
Cable length 100 m
RG 58 100 dB
RG 213 U 49 dB
Aircell 7, CA 2420 41 dB
Ecoflex 10, CA 2430 24 dB
We recommend to use the CA 2441 antenna amplifier if the cable attenuation exceeds 12 or 15 dB, i.e. if the CA 2420 cable is
longer than 40 m or the CA 2430 cable is longer than 60 m.
Important Note:
To comply with FCC RF exposure compliance requirements, the following antenna installation and device-operating configuration
must be satisfied. Only authorized and certified beyerdynamic systems integrators may perform the installation of antennae.
There are no user serviceable parts or processes. Connect the receiving antennae to the antenna inputs (5) A and B. Connect the
transmitting antenna output (12). To maintain compliance with the FCC's RF exposure guidelines, this transmitter and its antenna
must maintain a separation distance of least 20 centimetres from all persons.

1.4 Remote Supply of the Antenna Amplifier via the Control Unit

The antenna amplifiers can be supplied remotely via the MCW-D 200 control unit. Inside of the MCW-D 200 control unit
there is a status LED which can be seen through the ventilating louvres on the rear.
This LED will illuminate green, when the remote supply voltage is 5 V at all antenna sockets.
The LED will flash red, when there is a short-circuit at the antenna socket. In this case check the antenna cables.
The remote supply voltage of 5 V supplies the CA 2441 RT and CA 2441 T antenna amplifiers.
ATTENTION:
• The CA 2441 RT and CA 2441 T antenna amplifiers may be only powered with 5 V DC.
• When you connect a CA 2441 to the TX output of the MCW-D 200 you should use a connecting cable with an
attenuation of at least 10 dB.
see RX A
50 m
50 dB
24 dB
20 dB
12 dB
(1) MCW-D 200 control unit
(2) CA 2430 antenna cable with
2 x CA 2435 N(HF) plug
(3) CA 2441 RT antenna amplifier
(4) CA 2462 mounting kit 3/8"
(5) CA 2413 planar antenna
(6) ST 600 stand 3/8"
30 m
30 dB not suitable
15 dB short cable
12 dB normal cable
7 dB long cable
45