User Manual

MECHANICAL SPECIFICATIONS:
Size : 16.0 x 12.0 x 8.75 inch
(406 x 305 x 222 mm)
Weight : 35 Lbs. (16.0kg.) approx.
ENVIRONMENTAL CONDITIONS:
The unit is designed for outdoor applications:
Operating temperature: - 30°C to + 65°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.
A 7-pin circular connector provides failure alarm output contacts (see diagrams on
page 9) as well as a 12 VDC (250mA) auxiliary output. For OUA option:
An AC
good alarm and DC good alarm are included. A TTL high is a non-alarm condition
and a TTL low is an alarm condition.
For S1 Option:
The BDA is equipped with both AC and DC voltage inputs for power
operation. This gives the flexibility of powering the BDA with either an AC or DC
source. If both sources are connected, the BDA will automatically select the stronger
source for power. NOTE: (To insure that the DC source will be selected when both
sources are connected, DC input voltage must be at least 27 VDC.)
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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