User's Manual
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BDACONNECTIONS:
The BDA AC power is accepted through a standard 3-wire male plug (IEC-320) 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 9-pin D-Sub connector provides failure alarm output contacts (see diagram
next page) as well as an optional 12 VDC (250 mA) 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.
RFEXPOSUREWARNING:
In order to comply with the FCC RF exposure requirements, the BDA-VHF-33/33-80-20RU18
antenna installation must comply with the following:
Yagi type or similar directional antenna must be installed so as to provide a minimum separation
distance of 12 inches (30 cm) between the antenna and persons within the area. (This assumes
an antenna with gain of 5.65 dBi, VSWR ≤ 1.5:1, Zo= 50 ohms)
The Omni directional (or leaky cable ) must be installed so as to provide a minimum separation
distance of at least 8 inches (20 cm) between the indoor antenna connected to the RF booster
and the human user’s body within the area. (This assumes an antenna with gain of 0-2 dBi,
VSWR ≤ 2:1, Zo= 50 ohms).