MINI-LINKEandEMicro
3.4 RAU1 (15-E, 18-E, 23-E, 26-E and 3 8-E)
This radio unit contains cover, frame, a radio interface sub-unit and a microwave
sub-unit.
The radio interface sub-unit consists of a circuit board assembly, including
external interfaces with the indoor units. This interface is a 50
N-type
connector. A connector for RF input level measurements and a set of LEDs
are accessible from the outside of the radio unit. The microwave sub-unit
consists of a m icrostrip board with an aluminum cover that provides shielded
compartments for the high-frequency circuits. The control circuit board is
fitted at the back of the microstrip board. The microwave sub-unit provides a
waveguide interface with the antenna.
The DC/DC conver ter is fitted directly on the vertical frame and connected to
the microwave sub-unit by a flat cable.
The vertical frame also has a waveguide port for connection to the antenna.
The bottom of the cover carries the radio cable connector, which is the interface
with the indoor modem unit (MMU), and a test por t for antenna alignment.
The connector for the radio cable is equipped with gas discharge tubes for
lightning protection.
3555
Figure 28 RAU1 15-E, 18-E, 23-E, 26-E and 38-E
30
AE/LZT 110 2012 R8C 2002-03-04
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