Installation Instructions

RF Unit USER AND
INSTALLATION
MANUAL
Code: D168X01_DDS09
Date: 16/06/09 Page: 12 of 16
01.01.00/1 Rev.1
6. INSTALLATION GUIDE
The following recommendations must be followed closely before starting up the RF
Unit module.
6.1. LOCATION
The RF Unit has been designed in the standard format of 19” / 3 units high and it
must be installed in cabinets with this format.
The RF Unit site must be permanent, well-ventilated and without vibrations.
6.2. POWER SUPPLY CONNECTION
DC power supply: check that the power supply source and/or the battery to be
used meets the voltage and current requirements necessary to supply the equipment:
 Nominal voltage: 26.4V
DC
(range: from 21.12 to 31.68 V
DC
).
 Minimum source current: 20 A.
 There is a power control circuit in the RPS P25 module in order to avoid an
over-current condition.
 If lead batteries are used, they are to be placed as far from the RF Unit as
possible to prevent corrosion in the repeater due to battery vapours. They
should be situated in a well-ventilated place.
 Use the power supply connector provided (D013000) to connect the RF Unit to
the power supply source. Use a cable with 2.5 mm
2
minimum diameter (or
AWG-12). Ensure that the connection is made with the correct polarity.
 Ensure that the earth connection is made. Make this connection with a cable of
maximum diameter and minimum length.
NEVER use a gas or electricity conduit as an earth.