User's Manual

MBF-40 AMERICAS REPEATERS
PRODUCT DESCRIPTION AND USER’S MANUAL
Cobham Wireless – Coverage Date: 14-Feb-16 www.cobham.com/wireless
Document number: 00071UM Rev. 4.3
Page | 2-23
2.2.8 Power Connections and Power On
This section describes how to connect the power source to the repeater and power on the repeater.
This section also provides information about the backup battery pack.
2.2.8.1 Power Connections
CAUTION!!
• Make sure the antenna cables or 50 ohm terminations are connected to the repeater’s
antenna connectors before the repeater is turned on.
• Be sure a CIRCUIT BREAKER meeting the instructions given in section
2.1.5.1 is
connected near the unit at an easily reachable and accessible location from the unit.
• Be sure the POWER SOURCE TO THE REPEATER IS DISCONNECTED before
connecting the power wires to the repeater power plinth.
• Please be aware that the equipment may, during certain conditions become very
warm and can cause minor injuries if handled without any protection, such as gloves.
Note the following:
• For dual power supply models - in dual power supply models, the two power supplies are
installed and both are active at all times. The power supplies are interconnected internally –
both
power supplies are activated by a single power connection. The required power wiring and circuit
breaker does not differ from the single power supply models.
• For -48VDC models - the -48VDC version of the power supply is designed to turn off if the
supply voltage falls below -36V (±1V), not to drain the feeding battery. It will turn on again as
the supply voltage reaches -43V (± 1V).
To connect the power cables
1. Refer to the power requirements as described in section 2.1.6.
2. Open the repeater door.
3. According to the repeater model, route the
power cable through the power interface
and towards the power plinth.
Figure 2-27: Example of Dual Power Supply Model
Route power
cable
Connect wires
to plinth