G Way Solutions UHF3680AB User Manual

Installation and
Operating Manual

BDA-UHF-36/36-80-AB

UHF Band Bi-Directiona l A m plif ier

Table of Contents

SAFETY OPERATION INSTRUCTIONS ................................................................................. 3

OVERVIEW ................................................................................................................................ 4

FCC NOTE .................................................................................................................................. 4

IC NOTE ...................................................................................................................................... 4

NOTE ........................................................................................................................................... 4

RF EXPOSURE WARNING ....................................................................................................... 4

ELECTRICAL SPECIFICATIONS ............................................................................................ 6

MECHANICAL SPECIFICATIONS .......................................................................................... 6

ENVIRONMENTAL CONDITIONS ......................................................................................... 6

MECHANICAL OUTLINE......................................................................................................... 8

CONNECTIONS ......................................................................................................................... 9

AVAILABLE, OPTIONAL FEATURES ................................................................................. 11

ALARM CONDITIONS ............................................................................................................ 12

VARIABLE GAIN ADJUSTMENT AND LED INDICATORS ............................................. 13

INSTALLATION ...................................................................................................................... 14

OPERATION ............................................................................................................................. 15

DIAGNOSTICS GUIDE ........................................................................................................... 16

ANTENNA SEPERATION ....................................................................................................... 16

APPENDIX 1 ............................................................................................................................. 17

APPENDIX 2 ............................................................................................................................. 19

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SAFETY OPERATION INSTRUCTIONS

BEFORE USE

Review this manual and insure that all conditions are compatible with
the amplifier's specifications. Safe operation may be impaired if this
equipment is not used as intended.

GENERAL DESCRIPTION

This symbol is marked in the manual and denotes important safety
operation instructions. Please read carefully before continuing.
This equipment is suitable for a wide variety of scientific, industrial,
laboratory and communication applications where high levels of
electromagnetic Radio Frequency (RF) energy are required.
Therefore, the output of the amplifier must be terminated to an
appropriate load, such as a high power attenuator, dummy load, a
communication or radiation antenna. User must insure that radiated
energy do not violate regulatory levels of electromagnetic interference.

PROTECTIVE GROUND

This symbol is marked on the equipment and denotes protective ground
terminal.
This amplifier includes protective ground terminal. The equipment
shouldn't be used if this protection is impaired. The supplied power cord
must be used along with an uninterrupted external power source.

HAZARDOUS LINE AND RF VOLTAGES

This symbol is marked on the equipment where dangerous voltages are
present. Use extreme caution.
Both RF input and output connectors should be terminated prior to the
application of the external AC source. Otherwise, contact with the
RF output center pin can be dangerous. Place the amplifier in the
OFF position prior to connecting and disconnecting RF output load.

ELECTROSTATIC DISCHARGE (ESD)

This symbol is marked on the equipment where ESD sensitive devices
are present. Do not handle without the proper protection.

MAINTENANCE

Maintenance, repair and calibration must be performed by qualified
personnel only. Contact with the internal amplifier components maybe
dangerous even when the equipment is in the OFF position.

CAUTION This denotes a condition that may cause damage to the Amplifier if

procedure is not correctly performed. Do not proceed until the
indicated conditions are met.

FORCED AIR COOLING

Do not block the inlet and outlet of the internal cooling blowers.
Otherwise damage may result to the amplifier.

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OVERVIEW

The BDA assembly enhances the coverage area of radio communications in buildings and RF
shielded environments.

The BDA has dual RF paths (Down-Link / Up-Link) to improve coverage in two distinct
frequency bands.

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

BDA-UHF-36/36-80-AB provides up to 36 dBm composite power and has up to 80 db gain.

FCC NOTE

This is a Class B device. The product has been tested and found to comply with the Booster
requirements per FCC Part 90.

IC NOTE

The product has been tested and found to comply with the Industry Canada (IC) RF Exposure
Requirements, pursuant to IC RSS-131.

NOTE

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.

RF EXPOSURE WARNING

The ERP limit, as defined by the FCC is +37 dBm. In order to comply with the FCC RF
exposure requirements, the BDA-UHF-36/36-80-AB and corresponding antenna installation
must comply with the following
The Omni directional antenna (or leaky cable ) must be installed so as to provide a minimum
separation distance of at least 38 cm (~15 inches) 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 dBi, VSWR ≤ 2:1, Zo= 50 ohms and a cable attenuation less then 1dB ).

Should user choose to utilize a higher gain donor antenna (greater than 0 dBi) with the
system, attenuation of the BDA’s gain will be required to meet FCC ERP limit of +37 dBm.

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Refer to Figure 1 for the

“OPERATION” section, later

BLOCK DIAGRAM DESCRIPTION

following discussion.
The downlink path of BDA

receives RF signals from
the base station, amplifies
the signal and transmits the
signal, without changing
the frequency, into a
Distributed Antenna
System at the direction of
the mobiles. The signal
travels over a DAS medium
that then dissipates the
signal to the Mobile
subscribers. The uplink
path receives RF signals at
the Mobile side from the
DAS system, then amplifies
it, and transmits the
amplified signal (without
changing the frequency) to
the base station.

This BDA supports Uplink
and Downlink, UHF occupy
distinct dedicated frequency
bands.

The bandwidth of uplink or
downlink pass band factory
tunable to 1-3 MHz. The
minimum pass band
separation is 1 MHz.

The diplexer isolates 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

in this document.

1. Diplexer – Separates/Combines UL and DL pass bands, provides needed

2. Downlink Low noise amplifier and driver. Exhibits low noise figure,up to

3. Downlink Filter – High selectivity filter gives additional rejection for

4. Downlink Power Amplifier with an ALC circuit ,offers up to 42dB gain and

5. Diplexer – Separates/Combines UL and DL pass bands, provides needed

6. Uplink Low noise amplifier and driver. Exhibits low noise figure and 45dB

7. Uplink Filter – Hig h selectivity filter gives additional rejection f or increased

8. Module that detects oscillations in the system due to insufficient Donor and

9. Uplink Power Amplifier with an ALC circuit ,offers up to 42dB gain and high

Figure 1: Block Diagram

isolation and selectivity to support system gain.

45dB gain and high linearity.

increased isolation.

high linearity.

isolation and selectivity to support system gain.

gain high linearity.

isolation.

Mobile Antenna.

linearity.

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Frequency Range

380-512 MHz

Bandwidth

1-3 MHz

Minimum pass band separation

1 MHz

Pass band Gain @ Min. attenuation

Up to 80±2 dB

Maximum Input Signal Level

-30 dBm

Input/Output Impedance

50 Ohms

VSWR (Input/Output)

<1.5: 1

110VAC/1.6Amps

220VAC/0.8Amps

50 to 60 Hz

Size

16.4 x 8 x 15.3 inch

RF
Connectors

43.3 Lb. (19.5 kg)

approx.

27 dBm

31 dBm

33 dBm

36 dBm

Gain Flatness [dB]

± 2.0

± 2.0

± 1.5

± 2.0

7.0 (Max.)

6.0 (Max.)

6.0 (Max.)

8.0 (Max.)

[dBm]

UL: +27 ±1

UL: +31 ±1

UL: +33 ±1

UL: +36 ±1

UL: +48

(Typ.)

UL: +51

(Typ.)

UL: +54

(Typ.)

UL: +54

(Typ.)

ELECTRICAL SPECIFIC ATIONS

Variable Step Attenuator Range 2-dB
steps

Power Supply

Composite Output
Power

Noise Figure [dB]
Output Power ALC Set

3rd Order Intercept Point
[dBm]

6.5 (Typ.)

DL: +27 ±1

(Typ.)

DL: +48

5.5 (Typ.)

DL: +31 ±1

(Typ.)

DL: +51

0-30 dB

5.5 (Typ.)

DL: +33 ±1

DL: +54

(Typ.)

7.5 (Typ.)

DL: +36 ±1

(Typ.)

DL: +54

MECHANICAL SPECIFIC ATIONS

Weight

ENVIRONMENTAL CONDITI O NS

The unit is designed for indoor applications:
Operating temperature: - 30°C to +55°C

Storage temperature: - 40°C to +85°C

N-Type Female

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