Teletronics International Smartamp Operating manual

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Copyright ©2003
By
Teletronics International, Inc.
Patent Pending
FCC NOTICES
Electronic Emission Notice:
This device complies with Part 15 of the FCC rules. Operation is subject to the following two
conditions:
1. This device may not cause harmful interference.
2. This device must accept any interference received, including interference that may cause undesired
operation.
FCC Radiation Exposure Statement:
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment
when installed as directed. This equipment should be installed and operated with fix-mounted
antennas that are installed with a minimum of 2 meters of separation distance between the antenna
and all persons body during normal operation.
All Rights Reserved. No part or parts of this document may be reproduced, translated, stored in any electronic
retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or
otherwise, without the prior written permission of the copyright holder.

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Table of contents
1. General Product Description _______________________________________4
2. Background ________________________________________________________4
3. Major Parameters____________________________________________________5
4. Salient Characteristics: ______________________________________________5
5. Installation: ________________________________________________________6
6. DC Power Supply:___________________________________________________6
7. Amplifier Connections, Indicators and Labels: ___________________________7
8. Functioning: _______________________________________________________7
9. Summary: __________________________________________________________7
10. Specifications: _____________________________________________________8
General Specifications ______________________________________________________8
Nominal Loss Characteristics For Different Cables __________________________________9
Decibels-Watts conversion Table _____________________________________________9
11. Path Loss Calculation ______________________________________________10
12. FCC Certified Systems _____________________________________________10
FCC ID: MFMSAMP24W______________________________________________________10
FCC ID: MFMSAMP24X ______________________________________________________10
13. Limited Warranty __________________________________________________11

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1. General Product Description
SMART Amplifier (SMARTAMP) is a bi-directional amplifier designed to match any
advanced spread spectrum system, either direct sequence or frequency hopping, to
extend the operating range of wireless equipment. It is provided in a wide range of
frequencies, such as 900 MHz, 2400 MHz, or 5800 MHz. It works in Time-Division
Duplex (TDD) mode that allows the radio device to share the antenna in different time
intervals. SMARTAMP consists of an intelligent algorithm and Automatic Gain
Controlled (AGC) circuits to maintain the output power and prevent transmit signal
saturation. The input transmit power level is sensed by the Radio Frequency (RF)
sensor and the gain is automatically adjusted to minimize the signal distortion so that
the desired signal quality can be assured..
This product has a wide range of wireless applications in Wireless Local Area Network
(WLAN), Wireless Local Loop (WLL), Wireless Internet Access (WIA), wireless modem
connection with point-to-point, point-to-multipoint, where the Time Division Duplex
(TDD) technology is used.
2. Background
In wireless applications, when longer operating range is required, the add-on antenna
amplifier and DC injector set are often a choice. Because of different site layout and
hardware configuration, it is almost impossible for amplifier manufacture to design the
amplifier and fit all applications. Typically, in most applications, the interconnection
cable could have different length from a few feet to a few hundred feet. Also, different
radio modems have different output powers. Thus, the system installer must carefully
measure the input RF power at the antenna amplifier and specify the gain of the
amplifier in order to maintain the system performance. With different systems, different
amplifiers are required. With this invention, the major difference as compared to other
existing technology, is the “SMART function” - power level detection and automatic gain
control circuit. With SmartAmp, the gain can be intelligently adapt to the input power
level in a wide range and automatically further adjusted to accommodate the cable and
connectors loss, by however length and configuration. The output power level is
monitored and maintained intelligently; hence the desired performance can be achieved
in all hardware configurations for TDD wireless applications irrespective of installation
environment.
The table on the next page summarizes the difference between SMARTAMP and other
TDD antenna-mount amplifier product.
Differences Between Smart Amp and Other TDD Amplifier
SMARTAMP Other TDD Amplifier
Transmit gain Intelli
g
ent self Fixed

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adjusted
Transmit power level Maintained Varies, depending on input
power level
Transmit signal distortion Minimized at all
time
Much worse at high input
power levels
Input power range
requirements
Wide range
accepted
Designed for narrow range
only
3. Major Parameters
Smart Amplifier fitted with a Low Noise amplifier (LNA) and together with its unique bi-
directional features is fully capable of enhancing the coverage area of 2.4 GHz radio
signals by amplifying transmitted and received signals.
The Smart Amp ensures a seamless RF link in most installations with long cable
losses. Its unique outdoor design enables it to be mast mounted and to operate in wide
temperature range of –40 to +75 C.
2.5 mW (+4 dBm) input to the amplifier delivers 1Watt output. For signal input
values greater than 4 dBm the Smart Amplifier attenuates the signal accordingly
and keeps the output at 30 dBm. Up to 200 mW of power may be safely applied
directly to the amplifier input without causing any damage.
The complete set includes:
1. An indoor unit, the SmartAmp
2. Universal power supply (110~240VAC to 9 V DC)
4. Salient Characteristics:
• Complete One Year Warranty on parts and labor.
• Automatic gain control to minimize the signal distortion
• Wide Transmit input levels (2mW to 200mW)
• Low noise amplifier with system noise figure 3.5dB
• Universal 110/220VAC auto switching AC adapter
• Bi-color LED on SmartAmp for transmit and receive.
• SmartAmp equipped with Lightening Protection if grounded properly.
• Industry standard “N” Connectors on both ends.
• Made in USA

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5. Installation:
The SmartAmp is a stand-alone unit designed for installation by professional radio
installers.
Typical Installation:
The amplifier can be installed indoor on a flat surface using the tapped holes on the
bottom of the amp. By using RF cables It is simply connected with the radio on one end
and antenna on the other. In this indoor unit is powered by a 9V DC power adapter. If
used with an outdoor antenna, its recommended to utilize the built-in lightning protection
by grounding the amplifier enclosure from any of its four mounting flanges. This would
not only ground any lightening strike on the antenna but would also relieve it from any
static buildup in the environment during bad weather.
6. DC Power Supply:
The power supply provided with the unit is universal type, 110/220 V AC to 9 VDC
converter. This has been tested for quality and performance. If a different 9V DC
adapter has to be used make sure it is provided with center positive 2.5mm jack and
minimum of 1.2 Amp rated capacity.

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7. Amplifier Connections, Indicators and Labels:
“TO Radio” Connection:
This “N” Female connector is connected to the power output of radio device via an
RF cable.
“TO Antenna” Connection:
This “N” Female connector connects to the antenna with a short length of coax
cable.
LED:
This LED indicates three states:
Green = Transmit
Red = Receive
Orange = High speed Tx / Rx switching
8. Functioning:
This amplifier is designed for 2.4 GHz radios using Time Division Duplex (TDD) mode of
operation. It is equipped with a high speed Tx / Rx switch, that detects transmit signal
and switches to transmit mode within 600 ns. In the absence of any transmit signal the
unit stays in receive mode. If used with a radio devices using separate bands for
transmit and receive in a true full duplex mode, the amplifier would not work.
9. Summary:
This manual describes how SmartAmp as a product exploits the automatic gain control
by detecting the input power level, automatically adjusting its gain and maintaining the
output power to a specified level while minimizing the signal distortion and maximizing
and transmission distance. This product has a wide range of wireless applications in
Wireless Local Area Network (WLAN), Wireless Local Loop (WLL), Wireless Internet
Access (WIA), wireless modem connection with point-to-point, point-to-multipoint, where
the Time Division Duplex (TDD) technology is used.
Should you have any problems using it, call our service department at 301-309-8500.

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10. Specifications:
General Specifications
Operating Range 2400 ~ 2500 MHz
Operating Mode Bi-directional TDD
Transmit Output Power +30 dBm ( 1Watt )
Transmit Input Power 3 dB min, 23 dB max
Transmit Gain Automatically adjusts up to 26 dB
Receive Gain 16 dB
Frequency Flatness ±1.0 dB
Noise Figure 3.5 dB
Lightening Protection Direct DC ground at antenna port
DC Surge Protection At 9 V DC input
LED indicators on Amp Tx: Green, Rx: Red
Operating Temperature -40 °C ~ + 75 °C
Power Supply 9 V DC at 1.1 Amp
RF Connector Type N, Female
CAUTION: Do not exceed 200mW (+23 dBm) of input power to the amplifier.
Rx Amplifier
Tx Amplifier
Bandpass
Filter
Tx Power
Reader
Tx Power
Sensor
Tx
Rx
DC
Power
Supply
Functional Block Diagram
Variable
Attenuator
In
Antenna
Tx
Rx

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Nominal Loss Characteristics For Different Cables
(decibels per hundred feet at 2.5 GHz)
LMR-400
LMR-500
LMR-600
LMR-900
LMR-1200
6.8 dB
5.5 dB
4.4 dB
3.0 dB
2.27 dB
Decibels-Watts conversion Table
dB mW dB Watts
0 1.0 31 1.3
1 1.3 32 1.6
2 1.6 33 2.0
3 2.0 34 2.5
4 2.5 35 3.2
5 3.2 36 4.0
6 4.0 37 5.0
7 5.0 38 6.3
8 6.3 39 7.9
9 7.9 40 10.0
10 10.0 41 12.6
11 12.6 42 15.8
12 15.8 43 20.0
13 20.0 44 25.1
14 25.1 45 31.6
15 31.6 46 39.8
16 39.8 47 50.1
17 50.1 48 63.1
18 63.1 49 79.4
19 79.4 50 100.0
20 100.0 51 125.9
21 125.9 52 158.5
22 158.5 53 199.5
23 199.5 54 251.2
24 251.2 55 316.2
25 316.2 56 398.1
26 398.1 57 501.2
27 501.2 58 631.0
28 631.0 59 794.3
29 794.3 60 1000.0
30 1000.0 61 1258.9

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11. Path Loss Calculation
Loss = 32.44 + 20 log f + 20 log d [where f = frequency in MHz and d= distance in km]
System Gain =Po (Tx power) + Gt (Tx antenna gain) + Gr (Rx antenna gain) - Mf (fade margin) -Ms
(system margin) - Pr (minimum receive signal level)
12. FCC Certified Systems
FCC ID: MFMSAMP24W
Radio: Cisco 352
Antenna: As shown in the table 1
Amplifier: Smartamp2400-1.0 (outdoor version)
Antenna Type Gain
(dBi)
Min. Cable
Length
LMR400
Max. Cable
Length
LMR400
Max Cable
Length
LMR600
Point to Point/
Point to Multi Point
ANT-O2405 5 3’ 200 feet 300’ Point to Multi Point
ANT-O2408 8 10’ 200 feet 300’ Point to Multi Point
ANT-P2412 12 10’ 200 feet 300’ Point to Point
ANT-G2418 18 3’ 200 feet 300’ Point to Point
FCC ID: MFMSAMP24X
Radio: Cisco 352
Antenna: As shown in the table 1
Amplifier: Smartamp2400-1.0 (indoor version)
Antenna Type Gain
(dBi)
Min. Cable
Length
LMR400
Max. Cable
Length
LMR400
Max Cable
Length
LMR600
Point to Point/
Point to Multi Point
ANT-O2405 5 25’ 200 feet 300’ Point to Multi Point
ANT-O2408 8 25’ 200 feet 300’ Point to Multi Point
ANT-P2412 12 25’ 200 feet 300’ Point to Point

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13. Limited Warranty
The SmartAmp is warranted to the original purchaser to be free from defects in
materials and workmanship under normal installation, use, and service for a period of
one (1) year from the date of purchase.
Under this warranty, Teletronics International, Inc. shall repair or replace (at its option),
during the warranty period, any part that proves to be defective in material of
workmanship under normal installation, use and service, provided the product is
returned to Teletronics International, Inc., or to one of its distributors with transportation
charges prepaid. Returned products must include a copy of the purchase receipt. In
the absence of a purchase receipt, the warranty period shall be one (1) year from the
date of manufacture.
This warranty shall be voided if the product is damaged as a result of defacement,
misuse, abuse, neglect, accident, destruction or alteration of the serial number,
improper electrical voltages or currents, repair, alteration or maintenance by any person
or party other than a Teletronics International, Inc. employee or authorized service
facility, or any use in violation of instructions furnished by Teletronics International, Inc.
This warranty is also rendered invalid if this product is removed from the country in
which it was purchased, if it is used in a country in which it is not registered for use, or if
it is used in a country for which it was not designed. Due to variations in
communications laws, this product may be illegal for use in some countries. Teletronics
International, Inc. assumes no responsibility for damages or penalties incurred resulting
from the use of this product in a manner or location other than that for which it is
intended.
IN NO EVENT SHALL TELETRONICS INTERNATIONAL, INC. BE LIABLE FOR ANY
SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES FOR BREACH OF THIS
OR ANY OTHER WARRANTY, EXPRESSED OR IMPLIED, WHATSOEVER.
Some states do not allow the exclusion or limitation of special, incidental or
consequential damages, so the above exclusion or limitation may not apply to you.
This warranty gives you specific legal rights, and you may also have other rights that
vary from state to state.