Powerwave Technologies 5JS0060 Amplifier User Manual I GENERAL DESCRIPTION

Powerwave Technologies Inc Amplifier I GENERAL DESCRIPTION

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5JS0060 User Manual

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1930-1990 MHz044-05116 Rev. A June 2002Operation ManualG3L-1900-31 (DC) / G3L-1900-31-A (AC)Wideband Multi-Carrier Power AmplifierOperation Manual1930 MHz – 1990 MHz

G3L-1900-31/G3L-1900-31-A Operation ManualÓ Copyright Powerwave Technologies, Inc., June 2002. All rights reserved044-05116 Rev. A 1-1 June 2002Section 1 General Description1-1 IntroductionThis manual contains information and procedures for the operation of the model G3L-1900-31and G3L-1900-31-A Wideband (WCDMA) Multi-Carrier Power Amplifier (MCPA). The manual isorganized into the following sections and appendix.Section 1 General DescriptionSection 2 OperationAppendix A Specifications1-2 General DescriptionThe amplifiers are wideband, linear, feed-forward power amplifiers (WPAs) that operate in the 60MHz frequency bandwidth from 1930 to 1990 MHz with an instantaneous bandwidth of 20 MHz.The amplifier provides linear amplification for single or multi-carrier WCDMA signals. The amplifi-ers communicate with the base station via a TLCI control interface bus; passing alarm and meas-urement information to the base station and receiving control information from the base station. 1-3 Hardware InterfaceThere are three groups of interface connections located on the amplifier chassis. These are RF,power, and control interface (TLCI bus) as described in the paragraphs that follow.1-3.1 RF The RF interface is located on the power amplifier front panel consists of the RF-In (TX-In) andRF-Out (TX-Out) connectors as shown in Figure 1-1.1-3.2 Power Supply Power supply voltages (-48 VDC or 230 VAC) from the base station subrack are connected to theamplifier via connector X3, pins A – D located on the power amplifier rear panel as shown in figure1-1. Table 1-1 lists the voltages and descriptions for each pin.Table 1-1 Primary Power ConnectionsSignalGroupX3 ConnectorPinSignal Name DescriptionA L AC Phase (isolated from amplifierchassis)B N AC Zero (isolated from amplifierchassis)ACCPE AC Protective Ground (connectedto chassis)D-48VDC DC Minus (isolated from amplifierchassis)DCE+48VDC DC Plus (isolated from amplifierchassis)

G3L-1900-31/G3L-1900-31-A Operation ManualÓ Copyright Powerwave Technologies, Inc., June 2002. All rights reserved044-05116 Rev. A 1-2 June 20021-3.3 TLCI Bus Communications The purpose of the TCLI bus is to provide a communications interface between the power ampli-fier and base station. The bus is connected from the base station subrack to the X3 connector lo-cated on the power amplifier rear panel as shown in figure 1-1. Table 1-2 lists the signal namesand descriptions for each pin of the 24-pin connector.Table 1-2 TLCI Bus ConnectionsSignalGroupX3 Connector Pin Signal Name Description2AXMTP3AXMTN18 ARCVPTLCI19 ARCVNEthernet, 10BASE-T5WPA_ID_BIT0 Hard-coded WPA ID13 WPA_ID_BIT1 BIT0=LSB, BIT!=MSBWPA ID21 WPA_ID_BIT2 OPEN=1=Logical HighGnd=0=Logical Low14891011121720GND24Ground Connected to WPA chassis groundFree 6, 7, 14. 15, 16,22, 23Reserved for WPA manufacture

G3L-1900-31/G3L-1900-31-A Operation ManualÓ Copyright Powerwave Technologies, Inc., June 2002. All rights reserved044-05116 Rev. A 1-3 June 20021-4 AlarmsThe WPA generates the following alarms and communicates then to the base station via the TLICbus:· VSWR· Gain · Temperature · Over-Drive · Power Supply· LinearizationThe base station is able to query the current alarm status from the WPA. Fault status is cleared atunit reset which means that any alarm detected after reset is reported to the base station. Thealarm status always represents existing conditions. 1-4.1 VSWRThe WPA supervises the output (load) VSWR and gives the alarm based on the following limits aslisted in table 1-3.Table 1-3 VSWR Alarm LimitsVSWR Alarm Status LimitsVSWR alarm ON VSWR at the output>6.0:1 @ phase 0-360ºVSWR alarm OFF VSWR at the output<3.0:1 or when the VSWR alarm is dis-abled @ phase 0-360º1-4.2 GainThe WPA supervises the gain of the unit and gives the gain alarm according to the limits listed intable 1-4.Table 1-4 Gain Alarm LimitsGain Alarm Status LimitsGain alarm ON Gain deviates more than ±1.5 dB from specified nominalgain or if the carrier cancellation loop is out of lock, the gainalarm is activatedGain alarm OFF Gain is within the specified range or disabled1-4.3 TemperatureThe WPA monitors the internal temperature. The measured temperature must represent the baseplate temperature of the main power amplifier. The alarm is given according to the limits listed intable 1-5.

G3L-1900-31/G3L-1900-31-A Operation ManualÓ Copyright Powerwave Technologies, Inc., June 2002. All rights reserved044-05116 Rev. A 1-4 June 2002Table 1-5 Temperature Alarm LimitsTemperature Alarm Status LimitsTemperature alarm ON Internal base plate temperature is equal or higherthan 92ºCTemperature alarm OFF Internal base plate temperature decreases more than10ºC from the alarm on temperature1-4.4 Overdrive The overdrive alarm causes an automatic WPA shutdown.1-4.5 Power SupplyThe WPA monitors the internal DC supply voltages and gives the power supply alarm if any of thevoltages are out of the specified range. This alarm causes an automatic WPA shutdown.1-4.6 LinearizationIn case of poor output signal, the linearization causes an automatic WPA shutdown.1-5 Status IndicatorThe status indicator LED is located on the WPA front panel as shown in figure 1-1. The LED hastri-color capability: red, yellow, and green. The LED’s blinking frequency is 0.5 – 1 Hz with a dutycycle of 45 – 55%. The LED indicates the status of the WPA as listed in table 1-6. Table 1-6 Status Indicator ColorsLED Color WPA StatusRed (stable) Manual main-switch turnedstandby and no TCP/UDBconnection establishedRed (stable) LED lighting period 1.5±±00..55 sseeccManual main-switch turnedON or WPA is resettingYellow (blinking) WPA in self-heating stateYellow (stable) In startup phase, WPA is instandby state and beforestate change message fromWPALED state as it was before disconnection TCP/IP connection is lost fortwo minutesYellow (stable) TCP/IP connection is lostand WPA is in standby state1-6 Functional And Physical SpecificationsFunctional and physical specifications for the model G3L-1900-31 and G3L-1900-31-A amplifiersare listed in appendix A.

G3L-1900-31/G3L-1900-31-A Operation ManualÓ Copyright Powerwave Technologies, Inc., June 2002. All rights reserved044-05116 Rev. A 1-5 June 20021-7 Equipment ChangesPowerwave Technologies, Inc. reserves the right to make minor changes to the equipment, in-cluding but not necessarily limited to component substitution and circuitry changes. Changes thatimpact this manual may subsequently be incorporated in a later revision of this manual. To thatend, we ask that you, our customer, share with us any information acquired in field situations thatwould enhance this manual.1-8 Ordering InformationTable 1-7 below gives the model numbers and descriptions used when ordering major compo-nents.Table 1-7 Major ComponentsNokia ModelNumber*PWAV ModelNumber*Manual Number DescriptionWPAF G3L-1900-31 044-05116 31W, 1930 – 1990 MHz ampli-fier module (DC)WPAE G3L-1900-31-A 044-05116 31W, 1930 – 1990 MHz amplifiermodule (AC)* Nokia model number located on front panel. Powerwave Technologies model number located onrear panel.Figure 1-1 G3L-1900-31 and G3L-1900-31-A Front and Rear Views

G3L-1900-31/G3L-1900-31-A Operation ManualÓ Copyright Powerwave Technologies, Inc., June 2002. All rights reserved044-05116 Rev. A 2-1 June 2002Section 2 Operation2-1 IntroductionThis section contains operating instructions for the G3L-1900-31 or G3L-1900-31-A widebandpower amplifier (WPA).2-2 Initial Start-Up and Operating ProceduresThe manual main power supply ON/OFF switch is located on the WPA front panel (refer to figure1-1 and paragraph 1-5 for status indicator conditions). Turn on the WPA as described in the stepsthat follow.CAUTIONBefore applying power, make sure that the input and output of the system is properlyterminated at 50 ohms. Do not operate the system without a load attached. Refer toappendix A for input power requirements. Excessive input power may damage theamplifier.WARNINGNever remove or install coaxial cables on either the subrack input or output port whenthe power amplifier is turned on. Operating the power amplifier while disconnectingand connecting RF cables may damage the equipment and/or cause personal injury.1. Verify that all input and output RF cables are properly connected. Do not apply an RF signalto the WPA.2. Turn on the main manual power supply switch (1=ON, 0=OFF). The WPA will self-test andinitialize (<15 sec), then establish communication with the base station via the TLCI bus.When completed, the WPA notifies the base station that it is ready to be taken into operation.The WPA then remains in a standby state until commanded by the base station. The com-mand received from the base station includes the operating band and based on that band,the pilot frequency sets to 10 MHz lower than the lowest carrier in the operating band.NOTEWhen the WPA is switched on in temperature conditions below the minimum operatingtemperature (-10ºC), self-heating is performed until an acceptable operatingtemperature exists.NOTEThe main manual power supply switch is also used to reset the WPA by manuallysetting the switch to OFF then back to ON.

G3L-1900-31/G3L-1900-31-A Operation ManualÓ Copyright Powerwave Technologies, Inc., June 2002. All rights reservedAll specifications are subject to change without notice. Contact the factory for complete performance data.044-05116 Rev. A A-1 June 2002Appendix A. SpecificationsTable A-1 G3L-1900-31/31-A Wideband Multicarrier Cellular Amplifier FunctionalSpecificationsFrequency Range 1930 - 1990 MHz (60 MHz Bandwidth)Instantaneous Bandwidth 20 MHz *Total Typical / Maximum Input Power -15.6 - +4.9 / +5.9 dBm Total Output Power 31 W (44.9 dBm) Adjacent Channel Leakage PowerRatio (ACLR) Spectrum Analyzer set-tings: 30 KHz RBW, 300 KHz VBW,True RMS detectorACLR1 <-46dBc@f=fc ±5 MHzACLR2 <-51dBc@f=fc ±10 MHzRF Gain 40 dB +0.5 dBGain Flatness: ±0.5 dB Output Protection: Mismatch ProtectedInput Port Return Loss: 18 dB minHarmonics: Better than -50 dBcOut of Band Spurious: Better than -60 dBcDuty Cycle: ContinuousDC Input Power:G3L-1900-31-48 Vdc nominal, 9.1 amps typical (15 amps max)Operational -57 Vdc to -60 Vdc (Po derated outsidenormal operating range)AC Input Power:G3L-1900-31-A230 Vac nominal, 1.9 amps typical (3 amps max)Operational 264 Vac to 300 Vac (Po derated outsidenormal operating range)Operating Temperature: -10 ºC to +50 ºCStorage Temperature: -40 ºC to +85 ºCOperating Humidity: 0 % to 80 % Relative Humidity (noncondensing)Storage Humidity: 0 % to 100 % Relative Humidity (noncondensing)AC, DC Input, Summary Alarm, BaseStation Communication TLCI Bus:Elcon Modular Flatpaq tmRF Input Connector: SMA FemaleRF Output Connector: Type N-FemalePower Consumption: 435 Watts @ Po = 31 W average powerWeight: 28 lbs.Dimensions: 3.125” High, 16.75” Wide, 14.125” Deep, 15.75” Deepincluding connector guides * The command received from the base station includes the operating band and based on thatband, the pilot frequency sets to 10 MHz lower than the lowest carrier in the operating band.

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