G Way Solutions ESMR2W80AN89R Bi Directional Booster User Manual Revised

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Document ID	746711
Application ID	iBkqYw25mM8APYgN0a8J0w==
Document Description	Revised User Manual
Short Term Confidential	No
Permanent Confidential	No
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Document Type	User Manual
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Filesize	43.22kB (540237 bits)
Date Submitted	2007-01-12 00:00:00
Date Available	2006-11-29 00:00:00
Creation Date	2006-10-12 15:30:54
Producing Software	Acrobat Distiller 6.0.1 (Windows)
Document Lastmod	2007-01-12 09:03:23
Document Title	Microsoft Word - BDA-ESMR-2!2W-80-AN89R Manual REV1.doc
Document Creator	PScript5.dll Version 5.2.2
Document Author:	G-Dino

INSTALLATION
AND
OPERATING MANUAL
FOR
BDA-ESMR-2/2W-80-AN89R
DUAL BAND BI-DIRECTIONAL AMPLIFIER
TABLE OF CONTENTS
PARAGRAPH
PAGE
NO
BDA OVERVIEW
BDA BLOCK DIAGRAM DESCRIPTION
BDA BLOCK DIAGRAM DRAWING (Figure 1)
ELECTRICAL SPECIFICATIONS
MECHANICAL SPECIFICATIONS
ENVIRONMENTAL CONDITIONS
BDA CONNECTIONS
RF EXPOSURE WARNING
MECHANICAL OUTLINE DRAWING (Figure 2)
BDA INSTALLATION
BDA OPERATION
INSIDE LAYOUT AMPLIFIER LOCATION (Figure 4)
CONTROL PANEL ATTENUATOR ADJUSTMENT (Figure 5)
DIAGNOSTICS GUIDE
Page 2
10
11
12
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 a multi-block system,
based on a dual-duplexed (quadruplexer) path configuration with sharp out of band
attenuation allowing improved isolation between the receiving and transmitting paths,
plus ESMR 800 and SMR 900 paths.
The BDA has an integrated re-banding switch to change the frequency of operation in
the ESMR 800 band.
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.
For SMR distinct frequency bands; ESMR 800 frequency bands are as follows: (806824 MHz) for the Uplink and (851-869 MHz) for the Downlink. SMR 900 frequency
bands are as follows: (896-901 MHz) for the Uplink and (935-940 MHz) for the
Downlink. A quadruplexer isolates the Uplink and Downlink paths in the SMR chain,
plus a switched* internal duplexer will change the ESMR 800 frequency band to its rebanding frequency range.
A selectable 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.
*Re-banding Switch
The re-banding switch changes the frequency of operation in the ESMR 800 band to
Uplink (817-824 MHz) and Downlink (862-869 MHz). There is no tuning require, just
select the narrow SMR position for re-banding frequencies. (See Figure 5)
Page 3
Figure 1
1.
4.
2.
5.
3.
6.
BDA BLOCK DIAGRAM
BDA-ESMR-2/2W-80-AN89R
1. Uplink SMR Quadruplexer - has low bandpass insertion loss and high
selectivity.
2. Downlink Pre-amp - is a low noise amplifier that drives the Downlink MPA
and offers 45dB Gain.
3. Downlink MPA – is a high power amplifier with an ALC circuit which offers 43dB
Gain.
4. Uplink MPA – is a medium power amplifier with an ALC circuit which offers
43dB Gain.
5. Re-Banding Duplexer - is used for when re-banding of the ESMR800 frequency
band occurs, by selecting its switch position.
6. Uplink Pre-amp - is a low noise amplifier that drives the Uplink MPA and offers
45dB Gain.
7. Downlink SMR Quadruplexer - has low bandpass insertion loss and high
selectivity.
Page 4
7.
ELECTRICAL SPECIFICATIONS:
Frequency Range
SMR 800/900
Downlink
: 851-869 (862-869 re-band) and
935-940 MHz
Uplink
: 806-824 (817-824 re-band) and
896-901 MHz
Pass band Gain @ min attenuation
: 80 dB min.
Variable Step Attenuator Range
(2-dB steps)
: 0-30 dB
Pass band Ripple
: ±1.5 dB typical
Noise Figure @+25°C at max gain
: 4.0 typical (4.5 dB max.)
3rd Order Intercept point
: +46 dBm typical
Output Power @ 1dB Compression
: +34 dBm typical
Isolation between Up/Down Link
: 80 dB min.
Input/ Output Impedance
: 50 Ohms
VSWR (Input/Output)
: 1.5: 1 max
Power Supply
: 110VAC/0.9 Amp
: 240VAC/0.45 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
MECHANICAL SPECIFICATIONS:
Size
: 18.1 x 16.0 x 9.1 inch
: (460 x 406 x 231 mm) approx.
RF Connectors
: N-type Female
Weight
: 48 Lbs. (21.7 kg.) approx.
ENVIRONMENTAL CONDITIONS:
The unit is designed for indoor applications:
Operating temperature: - 20°C to + 50°C
Storage temperature: - 50°C to + 90°C
BDA CONNECTIONS
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 (250mA) 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.
RF EXPOSURE WARNING
In order to satisfy the FCC RF exposure requirements, the BDA/antenna installation
must comply with the following:
The outdoor antenna (Yagi type or similar directional antenna) must be installed so as
to provide a minimum separation distance of 0.3 meters (30 cm) between the antenna
and persons within the area. (This assumes a typical antenna with gain of [10.1 dBi,
VSWR ≤ 1.5:1, Zo= 50 ohms, and a cable attenuation of between 1-10 dB).
The indoor antenna (omni directional) must be installed so as to provide a minimum
separation distance of 0.2 meters (20 cm) between the antenna and persons within the
area. (This assumes a typical wide-beam type antenna with gain of 0-2 dBi, VSWR ≤
2:1, Zo= 50 ohms, and a cable attenuation of between 1-10 dB).
Page 6
Figure 2
G-Wave
ESMR 800/900
IN BUILDING REPEATER
BDA Mechanical Outline
Page 7
BDA INSTALLATION
DO NOT APPLY A.C. POWER TO THE BDA UNTIL CABLES ARE
CONNECTED TO BOTH PORTS OF THE BDA AND THE ANTENNAS.
1. Mount the BDA on the wall with the RF connectors pointing DOWN. Using
appropriate screws and anchors, attach the BDA to the wall at the four mounting holes
on the side flanges.
2. Ensure that the isolation between the donor antenna and the service antenna is at
least 12 dB greater than the BDA gain. (Use the higher of the Uplink and Downlink
gains reported on the BDA test data sheet).
3. Connect the cable from the donor antenna to the BDA connector labeled “BASE” and
the cable from the service antennas to the BDA connector labeled “MOBILE”.
4. Open the access door on the BDA. Verify that both of the attenuators are positioned
to their maximum setting (30 dB). Close the panel.
5. Connect the AC power cord to the BDA and then to the power source. Verify that the
“Power ON” lamp is illuminated.
Installation of the BDA is now complete. To adjust the gain controls to suit the specific
signal environment, refer to the next section of the manual.
Note: For repeat installations of existing equipment, make sure the attenuation is
positioned to its maximum setting (30 dB). After verification of attenuation, follow
the above steps starting with step 1.
Page 8
BDA OPERATION
Refer to figure 4 & 5 for adjustment access location and label.
Variable Step Attenuator
BDA gain can be reduced by up to 30 dB in 2 dB steps using the variable step
attenuator (Figure 5). Gain adjustment is made with rotary switches accessible via the
access door on the BDA enclosure. Arrows on the shafts of these switches point to the
value of attenuation selected. BDA gain can be determined by subtracting the
attenuation value from the gain reported on the BDA Test Data Sheet for that side of the
unit. The attenuators are labeled for Uplink and Downlink.
Alarm Function
The alarm monitors current of both uplink and downlink amplifiers in each path. An
alarm condition will occur in each path if either the uplink or downlink amplifiers are over
or under its current tolerance or there is no supply power present.
(Relay Shown in Non-Alarm Condition)
N.O.
COM.
N.C.
Re-banding Switch
The re-banding switch changes the frequency of operation in the ESMR 800 band from
uplink (806-824 MHz) and downlink (851-869 MHz) to uplink (817-824 MHz) and
downlink (862-869 MHz). There is no tuning require, just select the narrow SMR
position when re-banding occurs. (See Figure 5)
ALC (Automatic Level Control)
To minimize intermodulation products, each amplifier in the BDA contains an ALC
feedback loop. The ALC circuit senses the output power and limits both Uplink and
Downlink to the factory preset level of +26 dBm. A red indicator lamp located on the
control panel illuminates when output power exceeds the ALC set point.
To establish proper operating gain on the Uplink and Downlink sides, start with the
Downlink. Observe the red indicator lamp on the Downlink amplifiers. Units are shipping
with maximum attenuation. Decrease attenuation one step at a time until the lamp is lit.
Then, using the each Downlink step attenuator, increase the attenuation until the lamp
goes off. Repeat the process for the Uplink. The level indicator is accurate to +/- 0.4 dB
of the ALC set point.
Operation of BDA-ESMR-2/2W-80-AN89R at minimum attenuation with greater
than -40 dBm average power incident on either BASE or MOBILE port can cause
damage to the BDA.
Page 9
Figure 4
Inside Layout
SMR 900 Uplink
MPA
ALC circuit inside
SMR 800 Uplink
MPA
ALC circuit inside
Control Panel (See Figure 5)
Page 10
Figure 5
Control Panel
Re-banding Switch:
Is used to narrow the SMR 800
frequency band at the sites
where re-banding occurs.
DOWNLINK
30
ESMR
UPLINK
30
Power
Switch
Page 11
DIAGNOSTICS GUIDE
The BDA provides long term, carefree operation and requires no periodic maintenance.
There are no user-serviceable components inside the BDA.
This section covers possible problems that may be related to the installation or
operating environment.
a. Gain Reduction
Possible causes: Bad RF cables and RF connections to antennas, damaged antennae.
b. Excessive Intermodulation or Spurious
Possible causes:
Amplifier oscillation caused by insufficient isolation. The isolation between two antennae
is given by the equation:
Isolation = 92.5 + 20 Log (F x D) – Gt – Gr
Where:
F = frequency (GHz)
D = separation (Km)
Gt = transmit antenna gain (in the direction of the receive antenna).
Gr = receive antenna gain (in the direction of the transmit antenna).
For example, at the SMR frequencies, the antenna isolation at 100 m separation is
about 71 dB for omni-directional antennas (0 dB gain). To increase isolation, the
antennas should have higher directivity and must be pointed away from each other.
c. Occasional Drop-out of some Channels
Possible causes: One channel with very strong power dominates the RF output of the
amplifier.
38 Leuning Street
South Hackensack, NJ 07606
Tel. 201-343-3140 Fax 201-343-6390
sales@gwaverf.com
www.gwaverf.com
Page 12

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Title                           : Microsoft Word - BDA-ESMR-2!2W-80-AN89R Manual  REV1.doc
Creator                         : G-Dino
Author                          : G-Dino

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