Andrew SELA-800CHZ Extender SelectAmp CDMA 800 Channalized Amplifier User Manual frontPage
Andrew Corporation Extender SelectAmp CDMA 800 Channalized Amplifier frontPage
Andrew >
Exhibit D Users manual per 2 1033 c 3
27 February, 2001
USERS GUIDE
for the
SELECTAMP CDMA 800 CHANNELIZED AMPLIFIER
MANUAL NO. AE04B-A0279
REVISION --
The information set forth in this document and all rights in and to inventions
disclosed herein, and patents which might be granted thereon disclosing,
employing or covering the materials, methods, techniques or apparatus
described herein are the exclusive property of Andrew Corporation.
This document is an operation and maintenance manual. No disclosure or
reproduction of the information or drawings shall be made of any other
purpose without the prior written consent of Andrew. Use of the information
contained herein to fabricate or assemble any item in whole or in part is
expressly prohibited.
These goods are subject to U.S. Department of State, International Traffic
in Arms Regulations, 22 CFR 120-130.
This transmitter is intended for use at fixed base station sites only, and is
not to be marketed for mobile use. As such, under Section 1.1307 of the
FCC Rules, the transmitter is not currently subject to the Commission’s
environmental rules pertaining to the routine evaluation for RF exposure
prior to equipment authorization.
2601 Telecom Parkway Richardson, Texas 75082-3521
Phone: 972-952-9700 Fax: 972-952-0019
AE04B-A0279 Rev. -- LIST OF EFFECTIVE PAGES
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LIST OF EFFECTIVE PAGES
Dates of issue for original and changed pages are:
Original................... O................. 21 June 2000
TOTAL NUMBER OF PAGES IN THIS PUBLICATION IS __,
CONSISTING OF THE FOLLOWING:
Page Change No.
(O = Original Page)
Title Page O
List of Effective Pages (i) O
Safety Summary (ii) O
Table of Contents (iii - iv) O
Chapter 1 (1-1 thru 1-5) O
Chapter 2 (2-1) O
Chapter 3 (3-1 thru 3-3) O
Chapter 4 (4-1) O
Appendix A (A-1 thru A-5) O
Appendix B (B-1 thru B-15) O
Appendix C (C-1 thru C-15) O
Appendix D (D-1 thru D-2) O
AE04B-A0279 Rev. -- SAFETY SUMMARY
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SAFETY SUMMARY
High voltage is used in the operation of this
equipment. Death on contact may result if
personnel fail to observe the following
safety precautions:
Do not be misled by the term "Low Voltage." Potentials as low as 50 volts may cause death under
adverse conditions.
Do not crush, puncture, disassemble, or otherwise mutilate batteries. Leaking batteries can cause
serious damage to equipment and injury to personnel.
Do not remove covers or access plates on the equipment unless you are authorized to do so.
Do not work on electronic equipment unless there is another person nearby who is familiar with the
operation of the equipment and is trained in administering first aid.
Whenever possible, disconnect the equipment from the power source before beginning maintenance.
To prevent electrical shock or damage to the equipment, do not operate it until you thoroughly
understand the operation and function of all controls, indicators, and connectors.
Turn off all power to the equipment before replacing any fuses.
FIRST AID
In case of electrical shock:
Do not try to pull or grab the individual.
If possible, turn off the electrical power.
If you cannot turn off the electrical power, pull, push, or lift the person to safety using a dry wooden pole,
a dry rope, or some other insulating material.
Send for help as soon as possible.
After the injured person is no longer in contact with the source of electrical shock, move the person a
short distance away and immediately administer first aid and artificial resuscitation as required.
AE04B-A0279 Rev. -- TABLE OF CONTENTS
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TABLE OF CONTENTS
CHAPTER 1 DESCRIPTION .............................................................................................................. 1-1
1.1 OVERVIEW............................................................................................................................. 1-1
1.2 ELECTRICAL SPECIFICATIONS............................................................................................. 1-1
1.3 MECHANICAL SPECIFICATIONS............................................................................................ 1-2
1.4 ENVIRONMENTAL SPECIFICATIONS .................................................................................... 1-2
1.5 TECHNICAL ASSISTANCE .................................................................................................... 1-2
CHAPTER 2 OPERATIONAL OVERVIEW ......................................................................................... 2-1
2.1 OVERVIEW............................................................................................................................. 2-1
2.2 RF DISTRIBUTION.................................................................................................................. 2-1
2.3 POWER DISTRIBUTION ......................................................................................................... 2-1
2.4 CONTROL DISTRIBUTION...................................................................................................... 2-1
CHAPTER 3 FUNCTIONAL DESCRIPTION....................................................................................... 3-1
3.1 OVERVIEW............................................................................................................................. 3-1
3.2 FUNCTIONAL DESCRIPTION ................................................................................................. 3-1
3.2.1 Diplexer........................................................................................................................ 3-1
3.2.2 LNA/Attenuator ............................................................................................................ 3-1
3.2.3 Channelizer.................................................................................................................. 3-1
3.2.3.1 Downconverter ................................................................................................ 3-1
3.2.3.2 Upconverter..................................................................................................... 3-2
3.2.3.3 Synthesizer ..................................................................................................... 3-2
3.2.4 Power Supply............................................................................................................... 3-3
3.2.5 Power Amplifier Module ............................................................................................... 3-3
3.2.6 Interconnect Board....................................................................................................... 3-3
3.2.7 Battery Back Up Option ............................................................................................... 3-3
3.2.8 Mounting Kit Options.................................................................................................... 3-3
3.3 PROGRAMMING..................................................................................................................... 3-4
CHAPTER 4 MAINTENANCE ............................................................................................................. 4-1
4.1 MAINTENANCE PROCEDURES ............................................................................................. 4-1
APPENDIX A AMPLIFIER INSTALLATION.........................................................................................A-1
APPENDIX B SOFTWARE INSTALLATION .......................................................................................B-1
APPENDIX C APPLICATION NOTES .................................................................................................C-1
APPENDIX D BATTERY BACK-UP OPTION......................................................................................D-1
LIST OF FIGURES
Figure 1-1 SelectAmp CDMA800 Series Outline Drawing ................................................................... 1-3
Figure 1-2 Connector Configuration.................................................................................................... 1-4
Figure 3-1 Isometric View................................................................................................................... 3-2
AE04B-A0279 Rev. -- TABLE OF CONTENTS
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LIST OF TABLES
Table 1-1 Electrical Specifications ..................................................................................................... 1-1
Table 1-2 Mechanical Specifications .................................................................................................. 1-2
Table 1-3 Environmental Specifications.............................................................................................. 1-2
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CHAPTER 1
DESCRIPTION
1.1 OVERVIEW
The SelectAmp CDMA 800 bi-directional channelized amplifier provides selective frequency amplification of
user specified frequencies in the SMR, Cellular, and ESMR bands. This unit will selectively filter for one 1.25
MHz or 5 MHz channel, depending on the part number ordered, in the Uplink and Downlink band as
determined by the operator. Frequency selection, gain adjustment and fault monitoring is accomplished with
monitor and control circuitry and firmware.
Within this manual, Uplink refers to the RF signal path from the mobile unit to the base station (Donor Cell)
and the Downlink refers to the RF signal path from the base station to the mobile unit.
1.2 ELECTRICAL SPECIFICATIONS
Table 1-1 below contains the electrical specifications for the Channel Selective Amplifier.
Table 1-1 Electrical Specifications
Parameters Specification
Frequency Range
800 MHz Cellular
Uplink Downlink
824 – 849 MHz 869-894 MHz
Power
Three wire, 90 to 260 VAC @ 200 watts.
SAW Filter 3 dB Bandwidth
1.5 MHz or 5 MHz.
Noise Figure
5 dB maximum.
RF Port Impedance
50 ohms nominal.
Maximum Input Signal Without damage
+10 dBm with no attenuation.
CDMA Power Output
8 Watts Downlink, 1Watt Uplink.
Spurious Emissions per J-STD-008
(Measured from filter center frequency).
-45 dBc min @ 885 KHz.
-13 dBm max @ 1.25 MHz.
-45 dBm min @ 1.25 MHz.
In-Band Spurious
-30 dBm or better at maximum gain.
Status
Frequency setting, gain setting, and module failure via
phone interface.
Power Gain
Downlink
Uplink
65 to 95 dB, adjustable in 2 dB steps.
55 to 85 dB, adjustable in 2 dB steps.
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1.3 MECHANICAL SPECIFICATIONS
Table 1-2 below contains the mechanical specifications for the Amplifier.
Table 1-2 Mechanical Specifications
Parameters Specification
Size
Amplifier:
Height: 41 cm (16.3 inches).
Width: 31 cm (12 inches).
Depth: 31 cm (12 inches).
(Excluding heatsinks, connectors, handles, and feet.)
Weight
Amplifier: 45 lbs (21 kg).
Mounting
Four holes spaced (295 x 371 mm) (11.6 x 14.62 inches).
Hole diameter = 0.453 inches.
Power Connections
Weather proof 3 Pin Male (AC), 3 Pin Female (DC)
RF Connections
Type N female.
Figures 1-1 and 1-2 show outline mounting and connector locations for the SelectAmp series amplifiers. The
Diversity connection is not available on the 2 Watt repeater (CDMA 800-1).
1.4 ENVIRONMENTAL SPECIFICATIONS
Table 1-3 below contains the environmental specifications for the Amplifier.
Table 1-3 Environmental Specifications
Parameters Specification
Temperature Range (Operating)
Operating: -40 to +60ºC (Vertically mounted with unobstructed
airflow.)
Storage: -40º to +70ºC.
Humidity Range (Operating)
Up to 90 percent non-condensing.
Environmental Protection
NEMA type 4 (IP 66).
1.5 TECHNICAL ASSISTANCE
Technical assistance on this or any other Andrew product is available 24 hours per day through:
Andrew Customer Service
Telephone: 1-800-255-1479
Fax: 1-708-349-5444
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AE04B-A0279 Rev -- DESCRIPTION
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Figure 1-1 SelectAmpCDMA 800 Series Outline Drawing
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1-5
RF PORT
(TOWARDS MOBILE)
POWER FUSE GLAND FOR REMOTE
STATUS CABLE
RF PORT
(TOWARDS BASE STATION)
RF PORT
(TOWARDS DIVERSITY
ANTENNA)
AC POWER INLET
GROUND
LINE NEUTRAL
DC POWER INLET
(BATTERY BACK-UP)
+V
HEALTH
GROUND
GROUND LUG
Figure 1-2 SelectAmpCDMA 800 Series Connector Configuration
AE04B-A0279 Rev -- OVERVIEW
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CHAPTER 2
OPERATIONAL OVERVIEW
2.1 OVERVIEW
Refer to Figure 2-1. The SelectAmp CDMA 800 bi-directional channelized amplifier provides selective
frequency amplification of user specified frequencies in the SMR, Cellular, and ESMR bands. This unit will
selectively filter for one 1.25 MHz or 5 MHz channel, depending on the part number ordered, in the Uplink
and Downlink band as determined by the operator. This is accomplished by downconverting the desired
signals to a 70 MHz intermediate frequency and using narrowband SAW filters to provide adjacent channel
rejection
2.2 RF DISTRIBUTION
The amplifier contains two paths; forward, or downlink, from the base station to the mobile, and reverse, or
uplink, from the mobile to the base station. Each path includes a diplexer, low noise amplifier, channelizer,
and power amplifier. The diplexers and channelizers determine the frequencies to be amplified.
2.3 POWER DISTRIBUTION
Main power for the amplifier is provided by a 14 amp power supply operating at +15 VDC. The power supply
accepts 90 - 260 VAC inputs. The interconnect board distributes +15 volts, +5 volts, and -5 volts to the
various modules.
2.4 CONTROL DISTRIBUTION
The operator has control over the gain and operating frequency of each path. Computer inputs for gain and
channel settings are routed to each low noise amplifier and channelizer. The gain setting is a four bit word
that sets downlink gain from 65 dB to 95 dB, and uplink gain from 55 to 85 dB. The channel setting is a
three wire serial input to a synthesizer in each channelizer. Each module outputs a status message to
indicate the overall condition of the active devices. If an active device fails, the module reports a fault.
AE04B-A0279 Rev -- OVERVIEW
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LNA/
ATTENUATOR
LNA/
ATTENUATOR
CHANNELIZER
CHANNELIZER
5 WATT
POWER AMP
10 WATT
POWER AMP
POWER SUPPLY INTERCONNECT BOARD
POWER/
CONTROL BUS
POWER/
CONTROL BUS
DOWNLINK
FILTER
UPLINK FILTER
DOWNLINK
FILTER
UPLINK FILTER
DIPLEXER
DIPLEXER
TO
ANTENNA
TO
ANTENNA
FIGURE 2-1
BLOCK DIAGRAM, SELECTAMP CDMA 800 REPEATER
AE04B-A0279 Rev -- FUNCTIONAL DESCRIPTION
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CHAPTER 3
FUNCTIONAL DESCRIPTION
3.1 OVERVIEW
The SelectAmp CDMA 800 bi-directional channelized amplifier provides selective frequency amplification of
user specified frequencies in the SMR, Cellular, and ESMR bands. This unit will selectively filter for one 1.25
MHz or 5 MHz channel, depending on the part number ordered, in the Uplink and Downlink band as
determined by the operator. This is accomplished by downconverting the desired signals to a 70 MHz IF
and using narrowband SAW filters to provide adjacent channel rejection.
3.2 FUNCTIONAL DESCRIPTION
Refer to Figure 3-1. Each path in the SelectAmp consists of four major modules: diplexers, LNA/attenuator,
channelizer, and power amplifier. These four modules are powered by, interconnected by, and monitored by
the power supply, interconnect board, and the status and control module respectively. Diplexing of the
uplink and downlink signals is accomplished by diplexer filters tuned to the required band (SMR, Cellular, or
ESMR). This view shows a third LNA/Attenuator for the diversity option.
These modules perform the function of selecting one 1.25 or 5 MHz channel out of the SMR, Cellular, or
ESMR band for amplification.
3.2.1 Diplexer
The diplexer module consists of dual filters with a common port on one end and two separate ports on the
other. One side of the diplexer is tuned for the uplink band, the other side for the downlink band. Insertion
loss of each filter is 2 dB maximum and 65 dB minimum rejection to the opposite band.
3.2.2 LNA/Attenuator
The LNA/attenuator module contains gain stages and digitally controlled attenuators. The gain of this
module is adjustable to permit the overall gain of the downlink path to be adjusted between 65 and 95 dB,
and the uplink path to be adjusted between 55 and 85 dB.
3.2.3 Channelizer
The channelizer module contains three boards shielded by aluminum dividers. These three boards, which
are described below, provide the channel selectivity for the SelectAmp. Overall gain of the Channelizer
module is 5 dB.
3.2.3.1 Downconverter
The downconverter board consists of a mixer driven by a synthesizer, and gain stages. The DC current draw
of each gain stage is monitored by a window comparator for status. The window comparator will indicate a
fault, if the gain stage has an open or short failure. The output of the down converter is fed to the
upconverter board.
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3.2.3.2 Upconverter
The upconverter board mixes the filtered 70 MHz IF with a signal from the synthesizer and outputs the same
frequency that was input to the downconverter. The upconverter consists of a SAW filter centered at 70
MHz with a 1.5 MHz or 5 MHz 3 dB bandwidth, depending on the part number ordered, a mixer and gain
stages. The DC current draw of each gain stage is monitored by a window comparator. The window
comparator indicates a fault, if the gain stage has an open or short condition.
LNA/
ATTENUATOR
LNA/
ATTENUATOR
CHANNELIZER
CHANNELIZER
5 WATT
POWER AMP
10 WATT
POWER AMP
POWER SUPPLY INTERCONNECT BOARD
POWER/
CONTROL BUS
POWER/
CONTROL BUS
DOWNLINK
FILTER
UPLINK FILTER
DOWNLINK
FILTER
UPLINK FILTER
DIPLEXER
DIPLEXER
TO
ANTENNA
TO
ANTENNA
Figure 3-1 SelectAmp800 Block Diagram
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3.2.3.3 Synthesizer
The synthesizer board consists of a synthesizer circuit that is driven by a reference oscillator and distribution
amplifiers. The synthesizer operating frequency is programmed from the status and control module. The
uplink and downlink frequencies are set with a computer that has Andrew designed frequency control
software installed on it. This software is a Microsoft® Windows™ application that allows the operator to
input the desired RF frequency and gain setting.
The status and control module converts the operator's input to the appropriate frequency command for the
synthesizer. The output of the synthesizer is split to the downconverter mixer and upconverter mixer.
3.2.4 Power Supply
The power supply assembly consists of an in-line EMI filter, switching power supply, and interface cable.
The power supply accepts a 90 to 264 VAC input and outputs +15 VDC for use by the rest of the amplifier.
Power is distributed to the active modules through the interconnect board.
3.2.5 Power Amplifier Modules
The downlink power amplifier module provides 45 dB of final gain and is J-STD-008 compliant up to 10
Watts output. The uplink power amplifer module has 27 dB of gain and is J-STD-008 compliant up to 1
Watt output. A thermal sensor mounted on the heatsink monitors the total heat dissipation of the power
amplifers.
3.2.6 Interconnect Board
The interconnect board distributes power to the other modules, and provides status information and control
capabilities at the local and remote connections. Control functions include synthesizer channel selection and
individual channel attenuation settings. Status information includes module summary status for the
LNA/attenuators, channelizers, power amplifiers and battery backup.
3.2.7 Battery Back Up Option
The battery back up (BBU) provides emergency operating power in case of AC power loss. Under normal
conditions, the BBU is charged by an internal charger. If AC power loss occurs, the BBU automatically
comes on-line and this condition is reported to the status and control module. The BBU has been sized for
back up capability over the full –40º to +60ºC tempe rature range and will power the repeater for
approximately two hours when ambient temperature is –40ºC. Actual back up time will increase with
warmer temperatures.
3.2.8 Mounting Kit Options
A mounting kit (EENCL-90004) is available for ease of installation on walls or poles. Refer to Appendix A
for installation instructions.
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3.3 PROGRAMMING
The amplifier and channel number are set by connecting a laptop computer with the supplied cable and
adapter to the RJ-45 (see Figure 1-2) port. Remote access is available by wireline connection to the RJ-11
port. To set a specific channel number or gain, refer to Appendix B.
The software enclosed with this unit is designed to provide local or remote control capability for one
repeater. A more sophisticated software package is available for monitor and control of a repeater network.
Contact customer assistance at the phone number indicated in Chapter 1 for more information.
AE04-A0279 Rev -- MAINTENANCE
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CHAPTER 4
MAINTENANCE
4.1 MAINTENANCE PROCEDURES
The SelectAmp contains no user-serviceable parts. To verify operation, check the amplifier against the
electrical specifications provided in Chapter 1. If the amplifier does not meet these specifications, call 972-
952-9894 Monday through Friday, between 8:00 a.m. and 5:00 p.m. CST, for instructions regarding return of
the defective unit for repair.
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A-1
APPENDIX A
AMPLIFIER INSTALLATION
1. List of Material
• Qty 1 – SELECTAMP800 Amplifier
• Qty 1 - User Guide (AE02B-AXXXX)
• Qty 1 - Programming Cable (ECATL-80700)
• Qty 1 - Adapter, RJ45 to DB9 (AE02M-D0419-001)
• Qty 1 - Adapter, RJ45 to DB25 (AE02M-D0420-001)
• Qty 1 - Power Cable, 12 ft. (AE02C-D3300-001)
• Qty 1 - Diskette containing SMARTpc Lite software for Amplifier Control
(AE02R-AXXXX-XXX)
2. Tools Required
• Qty 1 - 3/8 in. Electric Drill
• Qty 1 - 3/8 in. Diameter Drill Bit
• Qty 1 - 3/8 in. Diameter Masonry Drill Bit
• Qty 1 - No. 2 Phillips Screw Driver
• Qty 1 - No. 2 Flat Head Screw Driver
• Qty 1 - 9/16 Wrench
• Qty 1 - Pair of Medium Wire Cutters
• Qty 1 - Laptop Computer
• Qty 1 - Amplifier Mounting Kit (EENCL-90004)
3. Determine Location for Amplifier
1. Determine if the amplifier will be mounted on a wall or a pole.
2. If amplifier is going to be mounted on a wall, is it concrete or wallboard?
3. If amplifier is going to be mounted on a pole, what is the diameter of the pole? The
Amplifier mounting kit will support a pole up to 12 inches in diameter.
4. Locate the amplifier within 10 feet of a VAC @50/60 Hz Electrical Outlet.
AE04B-A0279 Rev -- APPENDIXA: AMPLIFIER INSTALLATION
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A-2
4. Amplifier Wall Installation, Figure 1.
Figure 1 Wall Mounting
Mounting Unistrut (2)
Floating Nut, 3/8"-16 (4)
Amplifier
Bolt, Hex Hd, 3/8"-16 x .75 (4)
Flat Washer, 3/8" (4)
Mounting Feet (4)
AE04B-A0279 Rev -- APPENDIXA: AMPLIFIER INSTALLATION
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A-3
1. Location found
2. Install the amplifier to the wall using mounting kit
3. Material used from mounting kit for wall installation.
• Channel (Qty - 2ea)
• Clamp Nut (Qty - 4ea)
• 3/8”-16 X .75 Hex Head Bolt
• Flat Sealing Washer
4. Materials provided for wall mounting of unistrut.
• Anchors (EAHRS-00002) (Qty – 4ea)
• Screw, Pan Head, #10-32 X 1.50 (Qty – 4ea)
• Washer, #10 (Qty- 4ea)
5. Prepare Unistrut
a. Drill two holes (0.219 inches in diameter) in each mounting unistrut.
b. The holes should be located between the slots and spaced approximately 12
inches apart, centered in the unistrut.
c. Prepare Holes in wall.
d. Mark hole locations from modified mounting unistrut.
e. Unistruts should be spaced 11.60 inches apart (center to center)
f. For wallboard approximately 5/8 in. thick.
• Drill 3/8 in. diameter holes
• Depress wing tabs so that anchor will fit into hole
• Push in until flush with wallboard
g. Concrete Installation
• Drill 3/8 diameter hole approximately 1 in. deep
• Depress wing tabs so that anchor will fit into hole
• Push in until flush with outside surface of concrete
h. Mount channels to the Wall
• Line mounting unistruts up with the holes drilled in the wall
• Use #10 hardware to install
i. Install amplifier to Channels
• Install the clamp nuts from the mounting kit into the mounting unistrut.
• Use the 3/8 hardware supplied with the mounting kit to install the amplifier to
the mounting unistrut.
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A-4
5. Amplifier Pole Installation, Figure 2.
Figure 2 Pole Mounting
Triangular Mounting Bracket (4)
Floating Nut, 3/8"-16 (4)
Bolt, Hex Hd, 3/8"-16 x .75 (4)
Flat Washer, 3/8" (4)
Mounting Feet (4)
AE04B-A0279 Rev -- APPENDIXA: AMPLIFIER INSTALLATION
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A-5
1. Find appropriate location for Repeater Installation
2. Install the repeater to a pole using mounting kit
3. Material used from mounting kit.
a. Mounting Unistrut (Qty – 2ea)
b. Floating Nut (Qty – 4ea)
c. Clamp (Qty – 2ea)
d. Stainless steel Band Strap (Qty – 2ea)
e. Mounting Bracket (Qty – 4ea)
f. X .75 Hex Head Screw (Qty – 4ea)
g. Washer, 3/8 approximately (Qty – 4 ea)
4. Mount Amplifier to Unistruts
5. Install the floating nuts from the mounting kit into the mounting unistrut.
6. Use the 3/8 approximately hardware supplied with the mounting kit to install the
amplifier to the mounting unistrut.
6. Power Up
1. Use the power Cable (AE02C-D3300-001) to connect the amplifier to a power
source.
2. The amplifier will accept from 90 – 260 VAC @ 240 Watts
3. If the connector on the cable is not compatible with that of the power source, you
may either:
a) Find an appropriate adapter.
b) Locate the correct connector and splice the cable. The wiring follows North
American standards
• Black Wire – Line
• White Wire – Neutral
• Green or Green/Yellow Wire – Ground or Earth
7. Alignment and Test
This procedure will allow the installation crew to properly align and test the repeater
system. This procedure assumes the antennas and cables are properly aligned and
operating correctly.
1. Connect a spectrum analyzer to the donor antenna cable. Adjust the analyzer for a
convenient display of the BTS signal, and record the received signal level.
Received Signal Level __________dBm
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2. Connect a signal source to the null antenna. Make sure the frequency of the signal
source is well away from the BTS frequency, and set the source power level to 0
dBm. Set the spectrum analyzer to the signal source frequency and measure the
power level at the Donor antenna cable. The difference between the signal source
power and the spectrum analyzer power level reading is the antenna isolation in dB.
Record the values. Signal Source Level ________ dBm
Spectrum Analyzer Level ________ dBm
Isolation ________ dB
The isolation value determines the maximum amount of gain allowed for either
downlink or uplink path. For the best stability of the system under all conditions, the
repeater gain in the uplink or downlink should be at least 10 dB less than the
isolation measured.
3. Initial Downlink Gain Setting
THE OUTPUT POWER OF THE EITHER PATH MUST NOT EXCEED THE
SPECIFIED RATING. IF THE SPECIFIED RATING IS EXCEEDED, THE UNIT
MAY NOT BE FCC COMPLIANT FOR SPURIOUS EMISSIONS.
Connect the spectrum analyzer to the NULL port of the repeater. Remember, the
power rating of the repeater is quite high and there is risk of exceeding the spectrum
analyzer maximum input. Place attenuators as required on the spectrum analyzer
input. Connect the Donor antenna to the DONOR port of the repeater.
The downlink output power of the repeater is equal to the input level measured in
Step 1 above, plus the repeater gain. Initially, set the repeater gain so that it meets
the isolation criteria specified in Step 2 without exceeding the output power specified
in Chapter 1, Table 1-1.
4. Initial Uplink Gain Setting
The uplink gain is completely dependent on the system design, and can only be
determined through drive testing. It is recommended that the gain be set to
minimum, and increased as required to meet system performance requirements.
5. Once the initial settings are made, drive testing is recommended to verify proper
coverage.
AE04B-A0279 Rev -- APPENDIX B: SOFTWARE INSTALLATION
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APPENDIX B
SOFTWARE INSTALLATION
1. Tools required
One personal computer (PC) with Windows 95, 98, or Windows NT.
2. SMARTpc Lite Software Installation and Configuration
2.1 Overview
2.1.1 The SMARTpc software provides a means to control and monitor the SelectAmp800
series (and other Smart-equipped Andrew products) locally or from a remote site.
2.1.2 The application software runs on a PC under Windows and communicates with firmware
inside the SelectAmp800.
2.1.3 Local connections require a programming cable which is provided with the
SelectAmp800.
2.1.4 Remote connections require a PC accessible modem.
2.2 Installation/Configuration Instructions
2.2.1 Install the Software on the PC.
2.2.1.1 Insert the installation disk into floppy drive.
2.2.1.2 Run the setup.exe executable located on the installation disk.
2.2.1.3 The default installation directory is c:\smartpc, but the setup program prompts you in
order to allow a different installation directory.
2.2.1.4 After setup is completed, there should be a new program group called SMARTpc Lite.
AE04B-A0279 Rev -- APPENDIX C: APPLICATION NOTES
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APPENDIX C
APPLICATION NOTES
The Andrew SelectAmp800 is a two-way on-band repeater with two RF paths. One path is for connection to
an antenna directed towards the service providers base station (this would usually be a Yagi or some other
directional antenna). The other path is connected to an antenna or suitable leaky feeder cable directed over
the area in which the mobile units are to be found.
Typical applications for the amplifier are as follows:
1. Extending coverage to within tunnels. This is achieved by the use of a leaky feeder cable
running the length of the tunnel attached to the mobile port of the amplifier. A directional
antenna would be connected to the base port of the amplifier directed towards the base
station. In this way uninterrupted coverage can be extended to within the tunnel. In some
cases a Yagi or omni-directional antenna can be used.
2. Extending coverage to within buildings. Many modern buildings incorporate large amounts of
reinforced concrete and other metal in their construction and, therefore, act as effective
screens to penetration by RF signals. By using localized antenna or leaky feeders within
these buildings connected to the mobile port, and a Yagi on the top of the building connected
to the base port, coverage can be extended to within these buildings.
3. Local topology, e.g., hills, embankments, etc., can cause propagation blank spots. By using
a suitable antenna to cover the area and a Yagi mounted high enough to "escape" the blank
spot, coverage can be extended to these areas.
4. Temporary requirements for radio coverage can arise from such events as conferences,,
exhibitions, sporting events, etc. These short term events would not justify the expense of a
permanent base station. Therefore, an amplifier can be employed to "borrow" channels from
a less busy site some distance away that would otherwise be out of range of mobiles units at
the event.
5. If a site becomes heavily congested with radio traffic and a neighboring site is under-utilized,
an amplifier can be utilized to "borrow" channels from the quiet site for use in the coverage
area of the busy site.
6. In areas of low user density, a base station can be under-used. However, it is often
impossible to increase coverage from a central point which experiences limits on power
levels, mast heights etc. In these instances an amplifier placed some distance away from
the base station can be used to extend the coverage in a desired direction.
When siting the two antennas for an amplifier, the most important requirement is to maintain the RF isolation
AE04B-A0279 Rev -- APPENDIX C: APPLICATION NOTES
Document use is restricted to that described on cover C-2
between the antennas to substantially greater than the gain of the amplifier (otherwise, feedback and
oscillation will occur). The isolation can be achieved in many ways including:
1. Physical separation using long feeders to keep the two antennas apart.
2. Directional antennas can be used, if the base station and the mobiles are on opposite sides
of the amplifier.
3. Vertical separation can be used by mounting the base station antenna high up a mast and
the mobile antenna as low as possible angled downwards to separate the two field patterns.
It is also necessary when siting the antennas to ensure that the maximum input signals to the amplifier do
not exceed the limits for the particular unit being used. If excessive signals do occur, overloading of the
amplifier can result in poor intermodulation and signal to noise performance.
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APPENDIX D
BATTERY BACK-UP OPTION
1. OVERVIEW
The SelectAmp series repeaters can be provided with an optional battery back-up, 65ACCE-XXXX-000. This
unit is designed to provide the repeater with a minimum of two hours of operation after loss of AC power.
This two-hour life rating is for full current draw at –40oC, so the actual operating life will be dependent on
traffic load and ambient temperature at the time the battery back-up is engaged. The unit contains two
batteries, a battery charger, and ancillary components for internal temperature control. There are two
external connections, one for AC power and one for DC interconnect between the battery back-up and the
repeater. The connections are opposite sex to reduce the possibility of swapping power inputs. A 12 foot AC
power cord and a 6 foot DC interconnect cable is shipped with the unit.
2. INSTALLATION
CAUTION
THIS UNIT IS EXTREMELY HEAVY. USE CARE WHEN LIFTING.
CAUTION
Installation requires only sufficient structural strength of the installation site to support the weight of the
unit. The unit should be mounted within 10 feet of an AC power source, and within 5 feet of the
repeater.
3. ELECTRICAL SPECIFICATIONS
Table 1-1 below contains the electrical specifications for the battery back-up.
Table 1-1 Electrical Specifications
Parameters Specification
Input Power (max charging current at -40oC)
Three wire, 85 to 132 VAC, 57 –63 Hz, @ 519 watts
Output Power (max)
+12VDC at 14 Amperes
Battery Life, full current at -40oC
2 Hrs. minimum
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4. MECHANICAL SPECIFICATIONS
Table 1-2 below contains the mechanical specifications for the battery back-up.
Table 1-2 Mechanical Specifications
Parameters Specification
Size
Height: excluding lifting eyes.
Width:
Depth:
Weight
Mounting Flange
5. ENVIRONMENTAL SPECIFICATIONS
Table 1-3 below contains the environmental specifications for the SelectAmp800.
Table 1-3 Environmental Specifications
Parameters Specification
Temperature Range (Operating)
Operating: -40 to +60EC
Storage: -40E to +70EC.
Humidity Range (Operating)
Up to 90 percent non-condensing.
Environmental Protection
NEMA type 3R