YDI Wireless WL2400-PCM User Manual AMP2440P FCC

YDI Wireless AMP2440P FCC

revised amp manual

Model AMP2440PREMOTE BI-DIRECTIONAL POWERAMPLIFIERS FOR 2.4 GHzUser and Installation ManualVersion 1.2 Sept 1999\manuals\AMP2440P-FCC.doc
IMPORTANT SAFETY INFORMATIONConnecting the RF output of a radio modem transmitter to a high gain antenna will result inconcentrated signal level near the antenna. The field strength radiated by these antennas, whenconnected to a transmitting Model 2400 Radio Modem with AMP2440P, may exceed FCC mandatedRF exposure limits. FCC rules require professional installation of theses antennas in such a way thatthe general public will not be closer than the distances specified in Table (1) from the radiating apertureof any of these antennas. End users of these systems must also be informed of this safety distancerequirement.LIMITED WARRANTYYoung Design, Inc. (YDI) warrants that your device is free of defects in material and workmanship for a period ofone year after initial purchase. YDI will repair or replace any YDI product returned to the factory freight prepaidwithin one year of the purchase date.The YDI warranty covers repairs or replacement (at YDI’s option) of the product only. YDI is not responsible for thecost of removal, reinstallation, or shipping to the place of repair. YDI does not extend or modify its warranty periodas a result of repair or replacement.YDI reserves the right to void a warranty and/or bill reasonable charges for repair of a unit if the warranty seal isbroken or the unit displays evidence of misuse, abuse, or tampering.YDI is not responsible for damage to any other equipment or property, or any other consequential or incidentaldamages of any kind, whether based on contract, negligence, or strict liability. Maximum liability shall not in anycase exceed the purchase price of the unit.Warranties give you (the buyer) specific legal rights. You may also have other rights which vary from state to state.This warranty is only extended to purchases made in the United States of America or its possessions.All Rights Reserved. No part or parts of this document may be reproduced, translated, storedin 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 thecopyright holder.TABLE OF CONTENTS1. DESCRIPTION .............................................................................................................................................................1WARRANTY NOTICEThe AMP2440P warranty is null and void if any of the following occurs:1. The amplifier is opened.2. The antenna connections are not properly waterproofed.3. The amplifier is operated with no antenna attached to the antenna connector.
22. AMPLIFIER FEATURES.............................................................................................................................................13. SPECIFICATIONS .......................................................................................................................................................24. AMPLIFIER KIT..........................................................................................................................................................35. INSTALLATION AND CABLING INSTRUCTIONS.................................................................................................46. AMPLIFIER CONNECTIONS AND INDICATORS ..................................................................................................57. DC POWER INJECTOR CONNECTIONS AND INDICATORS ..............................................................................58. POWER SUPPLY .........................................................................................................................................................69. OPERATION ................................................................................................................................................................6TABLE A - CONVERSIONS FROM DBM TO WATTS.................................................................................................7TABLE B - TYPICAL CABLE ATTENUATION VALUES............................................................................................7TABLE C - AMP2440P TYPICAL INSTALLATION......................................................................................................8
11. DescriptionThe AMP2440P is a bi-directional amplifier designed for extending the range of 2.4 GHz wireless LAN cards.The Model AMP2440P amplifier is intended only for use with the YDI Model WL2400-PCM and theWL2400-ISA 2.4 GHz Direct Sequence Spread Spectrum Wireless LAN cards. The units provide transmitpower amplification as well as receive signal gain. The amplifier is installed right at the antenna’s feedpoint, providing maximum effectiveness of transmit power. This has the effect of compensating for signalloss in the transmitter cable to the antenna. Likewise, the Low Noise Amplifier (LNA) in the AMP2440Pboosts the receive signal right at the antenna prior to experiencing the loss in the transmission cable to theradio. This gain also overcomes the losses in the transmission cable between the amplifier and the radio. Infact, use of the amp will actually increase the receiver sensitivity by a few dB! The ultimate result is the bestpossible noise figure and maximum receiver sensitivity.The amplifier is completely weatherproof and can be bolted to the antenna mast or tower leg using the U-bolt included. The connectors face down so that gravity will drain all water away from the amplifierenclosure. This will prevent water from settling on the face of the unit. Likewise, since the LEDs are alsofacing downward they can be checked for operation from the bottom of the mast.DC Power to the amplifier is supplied through the transmission cable, using an indoor power supply and DCInjector. The amplifier unit also contains its own integral lightning protection and DC surge protection.Likewise, the DC Power Injector connected to the WLAN card offers built-in lightening if properly grounded.Full output power of 250 mW is achieved with only 20 mW (+10 dBm) input to the amplifier.2. Amplifier Features• Transmit input levels from 3mW to 100mW• Up to 15dB transmitter power gain• 18dB receive gain• Low Noise Preamp• Weatherproof Cast Aluminum Case that is Mast Mountable• Mounting hardware that will accommodate mast diameters from 3/4” thru 3”• Polyurethane gasket for watertight seal on amplifier• DC Power carried up through the transmission cable• Power and Transmit LEDs on both the amp and the DC power injector• Built-in Lightening and DC Surge Protection• Heavy Duty “N” Connectors• One Year Warranty• Made in the U.S.A.
2 3. SpecificationsGeneral Specifications Operating Range: 2400-2483 MHzOperating Mode: Bi-directional, half-duplex. Senses RFcarrier from transmitter and automaticallyswitches from receive to transmit mode.Connectors: N-femaleIndicators: TX and RX LEDs on both the amplifierand the DC power injectorLightening Protection: Direct DC ground at antenna connectoron amp. Also, the DC Injector is also aligthtening protector if properly groundedDC Surge Protection: 600 Watt TVS at the amplifier input fromtransmission cableTransmitter AmplifierTransmit Gain: Up to 15 dBFrequency Response:Transmit OutputPower:+/-1 dB over operating range250 mWTransmit Input Power: 3mW minimum,100mW maximumReceiver Low Noise Amplifier (LNA)Receive Gain: 18 dB typicalFrequency Response: +/-1 dB over operating rangeNoise Figure: 3.5 dB approximatelyThird Order Intercept: 20 dBmMechanical and EnvironmentalOperatingTemperature: -20°C to +60°CPower: 12VDC @ 650mA or 105-240 VACfrom power supply provided with kitDimensions: Amplifier:3.85” x 2.52” x 1.46”DC Power injector:4.42” x 2.40” x 1.22” MountingBracket foramplifier: Accommodates pole/mastdiameters from 3/4” to 3”Kit Weight: Approx. 1.5 lb. with U-bolts Amplifier shown with the mounting hardware andDC Power InjectorTx PowerSense ToRadioDCPower Supply12 V DCRxTxTx AmpRx AmpBandpassFilterTx ToAntennaModel 2440 Amplifier Module Functional Block DiagramRFRx
3IMPORTANT FCC REGULATORY AND SAFETY INFORMATIONThe AMP2440P and the YDI WLAN 2400 WLAN cards must be professionally installed.Table (1) shows the FCC approved antennas that can be used with and without the YDIAMP2440P. When using the amplifier, only the outdoor antennas listed here can be used.The amplifier cannot be used with the small indoor patch antenna (Model A24FP06). It is theresponsibility of the installer to ensure that when used in the United States that therequirements in Section 15.247(b)3iii are meet.TABLE (1)Outdoor Antennas Certified for use with the WL2400 and AMP2440PMODEL DESCRIPTION Minimum SafeUncontrolled ExposureDistanceA2408 8 dB gain Omni-directional Antenna 20cmA2412 12 dB gain Omni-directional Antenna 20cmY2412 *12 dB gain Yagi Antenna 20cmY2414 *14 dB gain Yagi Antenna 22cmA2.45 FP12 *12 dB gain flat Panel Antenna 20cmA2.45 FP18 *18 dB gain flat Panel Antenna 35cmA2.45 LP17 *17 dB gain long Panel Antenna 32cmA2.45 LP15 *15 dB gain long Panel Antenna 25cmPT2421 *21 dB gain Grid Dish Antenna 50cmPT2424 *24 dB gain Grid Dish Antenna 70cm* High-gain directional antennas which can only be used in a point-to-point link with theamplifier due to ERP restrictions.Important Safety Information:Uncontrolled exposure distances is where the power density is 1mW/cm2 The antennas must be installedsuch that there will be no person closer than the specified distances in front of directional antennas ordirectly beside the Omni antennas.4. Amplifier KitEach Amplifier Kit Includes:• Bi-directional Amplifier• DC Power Injector• 110/220 VAC Power Supply with 12VDC output• Stainless Steel U-Bolt and mounting bracket for amp• Installation Manual
45. Installation and Cabling InstructionsThe amplifier can be mast mounted using the steel U-bolt included withthe unit (Refer to the drawing at the end of the manual for a cablingdiagram). The amplifier should be installed with the connectors facingdownward. Use an open-end wrench to carefully tighten the bolts usingthe included nuts. Take care not to over-tighten the bolts.The amplifier can be mounted to a flat surface using any of the mountingholes on the brackets mounting flanges. However, for maximumreliability, the connectors should be facing downward.It is very important to waterproof the RF connectors on the amp. However, it is recommended that you donot tape the connectors until after all system tests have been performed. Be sure to use a high qualityweather resistant electrical tape and/or other water sealant method.The DC Power Injector is not in a waterproof enclosure and must be protected from the weather. It can bepermanently mounted to a surface by putting screws through the two holes on the bottom of the enclosures.To do this, remove the four screws holding the top cover on the enclosure. Then mount the bottom of theenclosure using screws or bolts through the two holes in bottom. Replace the top cover when the enclosureis securely mounted. Avoid touching the circuit board mounted to the cover of the DC injector when thecover is off.Refer to the Typical Installation Details drawing at the end of this manual for more information about theinstallation.Amplifier in typical installation.Shown with the YDI Model Y2414 Yagi Antenna.
56. Amplifier Connections and IndicatorsTransmit LED:This LED glows RED in transmit mode indicating that RF power is applied tothe amplifier from the radio.Receive LED:This LED glows GREEN in the receive mode when DC power is applied to theamplifier and is off when transmitting.DC Injector Connection: This “N” Female connector is connected to the DC Power Injector via thetransmission cable.Antenna Connection: This “N” Female connector connects to the antenna with a short length of coaxcable.7. DC Power Injector Connections and IndicatorsA DC Power Injector is an in-line device which “injects” the DC power necessary to operate the amplifieronto a transmission line. This allows the cable to carry both RF signals and DC power to the mast mountedamplifier.Transmit LED: This LED glows RED when the pole mounted amplifier goes into thetransmit mode. The Remote Transmit LED is driven by unique circuitry,which actually detects changes in the DC current traveling through thetransmission line to the amplifier.Receive LED: This LED glows GREEN when DC power is applied to the amplifier and it isin the receive mode. When toggling between transmit and receive this LEDwill glow slightly dimmer.To Radio Connection: This “N” Female connector is connected to the radio modem via a shortjumper cable.To Amplifier Connection: This “N” Female connector connects to the amplifier on the mast via thetransmission line.12 VDC: This is the DC power input for the injector and is a standard 2.1 mm barreljack. +12VDC should be applied with center positive.
68. Power SupplyThe AMP2440P comes with a power supply that have standard 2.1 mm barrel plugs (which are configuredas positive (+) tip and negative ( - ) outer conductor). Although normally supplied with a power supply, anyregulated 12 Volt DC 1 amp supply can be used. The power supply provided with the kit can be used with110 or 240 VAC power.9. OperationThe unit operates automatically and there are no user adjustments.These modems “ping-pong” back and forth between transmit and receive so quickly during normal operationthat both the TX and RX LEDs will appear to be lit simultaneously. In fact, they are turning on and off soquickly that they appear to be on all the time. You can tell how quickly one of these LEDs are turning on andoff by their brightness. Their glow will be slightly dimmer when they are off.
7Table A - Conversions from dBm to WattsdBm Watts dBm Watts01.0 mW 26 398 mW11.3 mW 27 500 mW21.6 mW 28 630 mW32.0 mW 29 800 mW42.5 mW 30 1.0 W53.2 mW 31 1.3 W64.0 mW 32 1.6 W75.0 mW 33 2.0 W86 mW 34 2.5 W98 mW 35 3.0 W10 10 mW 36 4.0 W11 13 mW 37 5.0 W12 16 mW 38 6.0 W13 20 mW 39 8.0 W14 25 mW 40 10 W15 32 mW 41 13 W16 40 mW 42 16 W17 50 mW 43 20 W18 63 mW 44 25 W19 79 mW 45 32 W20 100 mW 46 44 W21 126 mW 47 58W22 158 mW 48 64 W23 200 mW 49 64 W24 250 mW 50 100 W25 316 mWTable B - Typical Cable Attenuation ValuesCable Type Attenuation per 100 ft (dB)at 2.4 GHzBelden 9913 8.0LMR 200 16.8LMR 240 12.9LMR 400 6.8LMR 600 4.41/2 “LDF 3.91/2” Superflex 6.13/8” LDF 5.93/8” Superflex 6.81/4” Superflex 9.8These values are approximate. Check with cable manufacturers for exact specifications.
8Table C - AMP2440P Typical InstallationTYPICAL INSTALLATION DETAILSIf the customer does the installation, YDI will provide:Antenna, pole mounted amp, DC injector, DC power supply andthe Model 2400 radio modem, if ordered.The radio installer should provide: Mast, cable from antenna to amp, transmission line from the amp to theDC injector, short cable from the DC injector to the radio modem andthe RS232 cable. However, YDI can also provide any of the cables,if desired.DC POWERINJECTORModel 2400Radio ModemPC, Router,PLC, etc.RS232 cableShort length of RG58/U(CAB-RPNM-12“)RF + DCChoke110/220 VACDC P.S.N-maleN-maleRP-TNC maleANTENNAOmni-directional (shown), orGrid Dish Yagi Antennas (not shown)AMP2440(mounted to mast with U-Bolt)N-male connectorTransmission LineLMR-400, Belden 9913 or other low loss cable to radio roomMastDripLoopDrawings\diagrams\inst2440.cdr

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