G Way Solutions PS7W3790C User Manual
Installation and
Operating Manual
BDA-PS7W-37/37-90-C
Public Safety 700 MHz Ban d Bi-Dir ect i onal A mplif i er
Table of Contents
SAFETY OPERATION INSTRUCTIONS ................................................................................. 3
OVERVIEW ................................................................................................................................ 4
FCC NOTE .................................................................................................................................. 4
IC NOTE ...................................................................................................................................... 4
NOTE ........................................................................................................................................... 4
RF EXPOSURE WARNING-FCC .............................................................................................. 4
RF EXPOSURE WARNING- INDUSTRY CANADA .............................................................. 4
ELECTRICAL SPECIFICATIONS ............................................................................................ 6
MECHANICAL SPECIFICATIONS .......................................................................................... 6
ENVIRONMENTAL CONDITIONS ......................................................................................... 6
MECHANICAL OUTLINE......................................................................................................... 8
CONNECTIONS ......................................................................................................................... 9
AVAILABLE, OPTIONAL FEATURES ................................................................................. 10
ALARM CONDITIONS ............................................................................................................ 11
VARIABLE GAIN ADJUSTMENT AND LED INDICATORS ............................................. 12
INSTALLATION ...................................................................................................................... 13
OPERATION ............................................................................................................................. 14
DIAGNOSTICS GUIDE ........................................................................................................... 15
ANTENNA SEPERATION ....................................................................................................... 15
APPENDIX 1 ............................................................................................................................. 16
APPENDIX 1 ............................................................................................................................. 17
APPENDIX 2 ............................................................................................................................. 18
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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
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.
regulatory levels of electromagnetic interference.
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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
receive and transmit paths.
BDA-PS7W-37/37-90-C provides up to 37 dBm composite power and has up to 85db 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-FCC
The ERP limit, as defined by the FCC is +37 dBm. In order to comply with the FCC RF exposure
requirements, the 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 30.8 cm (~12.2 inches) between the 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 uti lize a h igher gain a nte nna (gr eater tha n 0 dBi) with th e s ystem , attenu ation of
the BDA’s gain will be required to meet FCC ERP limit of +37 dBm.
RF EXPOSURE WARNING- INDUSTRY CANADA
In order to comply with the IC RF exposure requirements, the antenna installation must comply with the
following:
For 2 dBi gain antenna: The antenna must be installed so as to provide a minimum separation
distance of at least 32.5cm (~12.8 inches) between the antenna connected to the RF booster and the
human user’s body within the area. (VSWR ≤ 2:1, Zo= 50 ohms and a cable attenuation less then 1dB).
For 8.5 dBi gain antenna: The antenna must be installed so as to provide a minimum separation
distance of at least 68.7cm (~27.1 inches) between the antenna connected to the RF booster and the
human user’s body within the area. (VSWR ≤ 2:1, Zo= 50 ohms and a cable attenuation less then 1dB).
.
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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, PS 700
occupied distinct dedicated
frequency bands.
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 and high
3. Downlink Filter – High selectivity filter gives additional rejection for
4. High linearity Downlink power amplifier with an ALC circuit..
5. Diplexer – Separates/Combines UL and DL pass bands, provides needed
6. Uplink Low noise amplifier and driver. Exhibits low noise figure and high
7. Uplink Filter – High selectivity filter gives additional rejection for increased
8. Module that detects oscillations in the system due to insufficient Donor and
9. High linearity Up Link power amplifier with an ALC circuit.
Figure 1: Block Diagram
isolation and selectivity to support system gain.
linearity.
increased isolation.
isolation and selectivity to support system gain.
linearity.
isolation.
Mobile Antenna (optional).
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758 - 775 MHz (In USA)
768 - 776 MHz (In Canada)
788 - 805 MHz (In USA)
798 - 806 MHz (In Canada)
Pass band Gain @ Min. attenuation
Up to 85 dB
Variable Step Attenuator Range 2-dB
steps
-30 dBm
Input/Output Impedance
50 Ohms
VSWR (Input/Output)
<1.5: 1
Power Supply @ 37dbm unit
110VAC/0.6Amps
220VAC/0.6Amps
50 to 60 Hz
Size
14” x 6.7” x18.1”
RF
Connectors
Weight
37.8 lb.
25 dBm
27 dBm
33 dBm
37 dBm
Gain Flatness [dB]
± 1.5
± 2.0
± 1.5
± 1.5
5.0 (Max.)
5.0 (Max.)
5.0 (Max.)
5.5 (Max.)
Output Power ALC Set
[dBm]
UL: +25 ±1
UL: +27 ±1
UL: +33 ±1
UL: +37 ±1
UL: +46
(Typ.)
UL: +48
(Typ.)
UL: +51
(Typ.)
UL: +55
(Typ.)
ELECTRICAL SPECIFIC ATIONS
Down-Link Frequency Range
Up-Link Frequency Range
Maximum Input Signal Level
Composite Output
Power
Noise Figure [dB]
3rd Order Intercept Point
[dBm]
4.5 (Typ.)
DL: +25 ±1
(Typ.)
DL: +46
4.5 (Typ.)
DL: +27 ±1
(Typ.)
DL: +48
4.5 (Typ.)
DL: +33 ±1
(Typ.)
DL: +51
0-30 dB
5.0 (Typ.)
DL: +37 ±1
(Typ.)
DL: +55
MECHANICAL SPECIFIC ATIONS
May vary per unit, see spec for more accurate information
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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