G Way Solutions PS7PS82W80 Users Manual

INSTALLATION

AND

OPERATING MANUAL

BDA-PS7/PS8-2/2W-80-A

DUAL BAND BI-DIRECTIONAL AMPLIFIER

TABLE OF CONTENTS

PARAGRAPH PAGE NO

BDA OVERVIEW 3
BDA BLOCK DIAGRAM DESCRIPTION 3
ELECTRICAL SPECIFICATIONS 4
MECHANICAL SPECIFICATIONS 5
ENVIRONMENTAL CONDITIONS 5
BDA CONNECTIONS 5
MECHANICAL OUTLINE DRAWING (Figure 1 & 1a) 6
BDA INSTALLATION 7
BDA OPERATION 8
UPLINK MECHANICAL OUTLINE- ADJUSTMENT

(Figure 2)
DOWNLINK MECHANICAL OUTLINE- ADJUSTMENT
(Figure 3)
RF EXPOSURE WARNING 11

DIAGNOSTICS GUIDE 11

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9

10

BDA OVERVIEW:

The BDA assembly extends the coverage area of radio communications in buildings
and RF shielded environments. The BDA has dual RF paths to extend coverage in
two distinct frequency bands.

The unit features low noise figure and wide dynamic range. It is based on a duplexed
path configuration with sharp out of band attenuation allowing improved isolation
between the receiving and transmitting paths.

BDA DESCRIPTION

The BDA Downlink path receives RF signals from the base station and amplifies and
transmits them to the subscriber. The BDA Uplink path receives RF signals from the
subscriber and amplifies and transmits them to the base station. The Uplink and
Downlink occupy three distinct frequency bands. The frequency bands are as follows:
794-824 MHz for the Uplink and 764-776 MHz & 851-869 MHz for the Downlink. Two
triplexers isolate the paths and route each signal to the proper amplifying channel.

An Automatic Level Control (ALC) allows for output power limiting. A variable step
attenuator gives 0 – 30 dB of attenuation in 2 dB steps. The use of these controls is
covered in the “OPERATION” section, later in this document.

:

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ELECTRICAL SPECIFICATIONS:

Frequency Range
Downlink : 764-776 and 851-869 MHz
Uplink : 794-824 MHz
Pass band Gain @ min attenuation : 80 dB minimum
Variable Step Attenuator Range : 0-30 dB

(2-dB steps)
Pass band Ripple : ±1.5 dB (typ)

Noise Figure @+25
3rd Order Intercept point

Uplink : +46 dBm (typ)
Downlink : +46 dBm (typ)

*Output Power @ 1dB Compression
Uplink : +33 dBm (typ)
Downlink : +33 dBm (typ)

*ALC Factory Set Point
Uplink : +26 dBm
Downlink : +26 dBm

Isolation between Up/Down Link : 100 dB min
Input/ Output Impedance : 50 Ohms
VSWR (Input/Output) : 1.5: 1 max
Pass band Gain @ min attenuation : 80 dB minimum
Power Supply : 110VAC/1.42Amp

*The Manufacturer's rated output power of this equipment is for single carrier operation. For situations
when multiple carrier signals are present, the rating would have to be reduced by 3.5 dB, especially
where the output signal is re-radiated and can cause interference to adjacent band users. This power
reduction is to be by means of input power or gain reduction and not by an attenuator at the output of
the device.

°C at max gain : 5.5 dB max

: 240VAC/0.71 Amp
: 50 to 60 Hz

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