User's Manual

MECHANICAL SPECIFICATIONS:
Size : 19.0 x 13.0 x 5.25 inch
(483 x 330 x 133 mm)
Weight : 30 Lbs. (13.6kg.) approx.
ENVIRONMENTAL CONDITIONS:
The unit is designed for outdoor applications:
Operating temperature: - 20°C to + 50°C
Storage temperature: - 50°C to + 90°C
BDA CONNECTIONS
The BDA AC power is accepted through a 3-wire male plug with phase, neutral and
ground leads. The AC power is wired to a high efficiency DC switching power supply
which is CE and UL approved. The power supply runs the amplifiers and the Power-
On lamp. The metal enclosure of the BDA is connected to ground.
An optional 7-pin circular connector provides failure alarm output contacts as well as
a 12 VDC (250mA) auxiliary output.
The RF connections are made via two type “N” female connectors. The RF
connector labeled “BASE” must be connected to the antenna pointing towards the
base station. The RF connection labeled “MOBILE” must be connected to the
antenna facing the area to be covered by the BDA.
The RF connections must be made through cables with characteristic impedance of
50 ohms.
The isolation between the base station antenna and the mobile antenna should
be at least 12 dB higher than the BDA gain.
Isolation less than this value can
cause gain ripple across the band. Isolation equal to or less than the BDA gain
will give rise to oscillations which will saturate the amplifiers and possibly
cause damage to the BDA.
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