User's Manual

MBS USER AND
INSTALLATION
MANUAL
Code: D148X01PT_DDS06
Date: 14-Nov-2014 Page: 37 of 41
01.01.00/1 Rev.1
§ Fix the assembly tightening the top locking screw and tightening the
cable gland nut on the back of the hood/housing.
c) In both cases:
q The power supply cable to the MBS Unit must be provided by the installer
with the proper power supply connector adapted for the connection to the
electrical network or to a 24 VDC source
q Ensure that the earth connection is made. The MBS Unit has an earth
connector; this connector will connect to the earth protection of the
installation, which is different to the earth protection of the lightning rod.
Make this connection with a cable of, at least, 25 mm2 section (or AWG-3).
NEVER use a gas or electricity conduit as an earth.
6.3.4.3. ANTENNA CONNECTION
q With every MBS Unit, a RF super-flexible wire, N-Male – N-Male, is supplied
to connect the ANT connector of the MBS Unit with the RF wire of the
antenna.
Note: In case of installation a MBS Unit with diversity 2, it is recommended to
contact your supplier and/or installer who will provide the additional RF
super-flexible wire (Cod. 208931).
q The RF assembly depends on the cable type used in the installation up to the
antenna.
q The RF cable must have a protection against water entry (vulcanizable tape).
q Choose the most adaptable antenna for the installation. The antenna must
have an impedance of 50 ohms to the equipment transmission frequency.
Install the antenna in accordance with the manufacturer’s instructions.
q Use a coaxial cable, avoiding as much as possible large cable lengths. Cable
impedance is 50 ohms.