G Way Solutions CELLAB1W60 User Manual

INSTALLATION

AND

OPERATING MANUAL

FOR

BDA-XXX-1/1W-60-A

BI-DIRECTIONAL AMPLIFIER

TABLE OF CONTENTS

PARAGRAPH PAGE NO

BDA OVERVIEW 3
BDA BLOCK DIAGRAM DESCRIPTION 3
BDA BLOCK DIAGRAM DRAWING (Figure 1) 4
ELECTRICAL SPECIFICATIONS 5

FREQUENCY RANGES (Table 1) 6

MECHANICAL SPECIFICATIONS 7
ENVIRONMENTAL CONDITIONS 7

BDA CONNECTIONS 7
MECHANICAL OUTLINE DRAWING (Figure 2 & 2a) 8

RF EXPOSURE WARNING 9

BDA INSTALLATION 10

BDA OPERATION 11

MECH. OUTLINE- DOWNLINK ADJUST (Figure 3) 12
MECH. OUTLINE- UPLINK ADJUST (Figure 4) 13

DIAGNOSTICS GUIDE 14

Page 2

BDA OVERVIEW:

The BDA assembly extends the coverage area of radio communications in buildings
and RF shielded environments.
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 BLOCK DIAGRAM DESCRIPTION

:

Refer to figure 1 for the following discussion.

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 two distinct frequency bands. For example, the SMR frequency

bands are as follows: 806-821 MHz for the Uplink and 851-866 MHz for the Downlink.

Two diplexers isolate the paths and route each signal to the proper amplifying
channel.

A selectable Automatic Level Control (ALC) allows for output power limiting. A
Manual Gain Control (MGC) provides continuous control of amplifier gain. The use of
these controls is covered in the “OPERATION” section, later in this document.

Page 3

1. 2.

Figure 1

3. 4.

BDA BLOCK DIAGRAM

BDA-XXX-1/1W-60-A

1. Up-Link Diplexer - has low bandpass insertion loss and high selectivity

2. Down-Link amp - is a low noise amplifier

3. Up-Link amp - is a low noise amplifier with an ALC circuit which

4. Down-Link Diplexer - has low bandpass insertion loss and high selectivity

with an ALC circuit which offers 45dB Gain

offers 45dB Gain

Page 4

ELECTRICAL SPECIFICATIONS

:

Frequency Range : See Table 1

Pass band Gain @ min attenuation : 60 dB minimum

Manual Gain Control Range : 15 dB minimum
(continuous)

Pass band Ripple : ±1.5 dB (typ)

Noise Figure @+25°C at max gain : 5.0 dB max

3rd Order Intercept point

Uplink : +45 dBm (typ)

Downlink : +45 dBm (typ)

*Output Power @ 1dB Compression

Uplink : +32 dBm (typ)
Downlink : +32 dBm (typ)

*ALC Factory Set Point

Uplink : +25 dBm
Downlink : +25 dBm

Isolation between Up/Down Link : 80 dB min

Input/ Output Impedance : 50 Ohms

VSWR (Input/Output) : 1.5: 1 max

Power Supply : 110VAC/0.80Amp

: 240VAC/0.40 Amp
: 50 to 60 Hz

*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.

Page 5