G3L-850-135 Multi-Carrier Power Amplifier Service and Installation Manual 044-05117 December 2004
044-05117 © 2004 Powerwave Technologies Incorporated. All rights reserved. Powerwave Technologies, and the Powerwave logo are registered trademarks Powerwave Technologies, Inc. reserves the right to make changes to the documentation and equipment, including but not limited to component substitution and circuitry changes. Changes that impact this manual may subsequently be incorporated in a later revision of this manual.
044-05117 Warnings, Cautions, and Notes Warnings, cautions, and notes are found throughout this manual. The associated icons in warnings and cautions are used to quickly identify a potential condition that could result in the consequences described below if precautions are not taken. Notes clarify and provide additional information to assist the user. This warning symbol means danger. You are in a situation that could cause WARNING bodily injury.
044-05117 Revision Record Revision Record ii Revision Letter Date of Entry Reason for Change A December, 2004 Original version of product Installation and Service Manual - G3L-850-135 Multi-Carrier Power Amplifier
044-05117 Table of Contents Chapter No. Chapter 1 1-1 1-2 1-3 1-4 1-5 1-5.1 1-5.1.1 1-5.1.2 1-5.1.3 Installation 2-1 Operating Instructions 3-1 Introduction................................................................................................................... 3-1 Controls and Indicators ................................................................................................ 3-1 RESET Switch ...........................................................................................
044-05117 Chapter 5 5-1 5-2 5-3 5-4 5-4.1 5-4.2 5-4.3 5-4.4 5-5 5-5.1 5-5.2 Maintenance 5-1 Introduction................................................................................................................... 5-1 Periodic Maintenance................................................................................................... 5-1 Test Equipment Required For Test .............................................................................. 5-1 Amplifier Performance Test...................
044-05117 List of Tables Table No. Table Title Page Table 1-1. General Operating Parameters ................................................................................... 1-1 Table 1-2. G3L-850-135 Amplifier Specifications......................................................................... 1-2 Table 1-3. Major System Components ........................................................................................ 1-5 Table 2-1. Sample of DC Cable Ratings .....................................
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044-05117 Chapter 1 1-1 General Description Introduction This manual contains information and procedures for installation and servicing of Powerwave’s G3L-850-135 Amplifier.
044-05117 1-3 Functional and Physical Specifications Electrical, mechanical, and environmental specifications for the G3L-850-135 amplifier are listed in Table 1-2. Table 1-2.
044-05117 Figure 1-1. Model G3L-850-135 Amplifier Front Isometric View Figure 1-2.
044-05117 Figure 1-3. Model G3L-850-135 Amplifier Side View Figure 1-4.
044-05117 Figure 1-5. Model G3L-850-135 Amplifier Front Panel 1-4 Ordering Information Table 1-3 lists major system component numbers and descriptions for use in ordering amplifiers or components. Table 1-3.
044-05117 1-5 General Safety This paragraph describes safety practices when handling certain components. 1-5.1 Lifting Standards The handling of the power amplifier cabinet and its subassemblies involves heavy lifting. Various methods of lifting must be employed to safely and properly install this equipment. The following web site addresses are provided as references to OSHA personnel lifting guidelines: http://www.osha.gov/SLTC/etools/electricalcontractors/materials/heavy.html http://www.cdc.
044-05117 Chapter 2 2-1 Installation Introduction This chapter contains unpacking, inspection, and installation instructions for the G3L-850-135 Multi-Carrier Power Amplifier (MCPA). It is important that the licensee perform the following tasks correctly. Carefully read all material in this chapter prior to equipment unpacking or installation. Also, read and review the operating procedures in chapter 3 prior to installing the equipment.
044-05117 breaker be installed in the power distribution unit for each amplifier. DC wire smaller than 8 mm2 90°C copper should not be installed. Each amplifier should have its own DC cable pair. Refer to Table 2-1. According to the laws of probability used to formulate Erlang tables, rarely are all channels transmitting at the same time. We can use Erlang tables to predict typical maximum current usage.
044-05117 Table 2-4. 4-Way Combining Averaged Heat Loading Amplifier Power 120 120 120 120 No. Of Amplifiers 3-Sector (70%) Averaged BTU/hour 2-Sector (80%) Averaged BTU/hour 28,791 19,194 9,597 2,399 20,638 10,319 2,580 12 8 4 1 1-Sector (90%) Averaged BTU/hour 100% Typical BTU/Hour 32,793 21,862 10,931 2,733 10,514 2,629 * typical, based on given % of output power Table 2-5. 4-In/4-Out Non-combining Averaged Heat Loading Amplifier Power 120 120 120 120 No.
044-05117 CAUTION Before applying power, make sure that all connectors are secure. Make sure that the input and output are properly terminated at 50 ohms. Do not operate the system without a load attached. Refer to Table 1-2 for input power requirements. Excessive input power may damage the equipment. If the equipment is damaged: • The carrier is your first area of recourse. • A claim should be filed with the carrier once the extent of any damage is assessed.
044-05117 2. Measure primary DC input voltage. DC input voltage should be +27 Vdc ±1.0 Vdc. If the DC input voltage is above or below the limits, call and consult an electrician before you turn on your amplifier system. Refer to Chapter 3 for initial turn-on and checkout procedures. Unlock Position Lock Position 3-Position Switch: Reset (Up) On (Middle) Off (Down) Figure 2-1. Power Switch Functions and Unlocking/Locking Thumbscrews 2-6.
044-05117 Table 2-6.
044-05117 Chapter 3 3-1 Operating Instructions Introduction This chapter contains a description of the G3L-850-135 Multi-Carrier Power Amplifier (MCPA) controls, indicators, and initial start-up and operating procedures. 3-2 Controls and Indicators The controls and indicators for the G3L-850-135 Power Amplifier consist of the primary power RESET toggle switch, the LED STATUS indicator, and the RJ-11 PC Interface as shown in Figure 3-1. 3-2.
044-05117 Table 3-1. Status Indicator Colors and Status Control/Indicator STATUS (Multicolored LED Indicator) Description LED Color MCPA Status Green (solid) RF enabled, Reset/On/Off switch set to On (middle position). Green (blinking) Standby. Yellow (solid) Minor* alarm - APC function enabled. Red (solid) Major* alarm – Critical fault present. If present on only one amplifier, amplifier replacement required.
044-05117 c. Place the power 3-position (Reset/On/Off) switch on the amplifier front panel to the On (middle) position. 2. Allow the amplifiers to warm up for at least 5 minutes before taking power readings.
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044-05117 Chapter 4 4-1 Principles of Operation Introduction This chapter contains a functional description of the G3L-850-135 Multi-Carrier Power Amplifier (MCPA). 4-2 RF Input Signal The maximum input power for all carrier frequencies to the amplifier should not exceed the limits specified in Table 1-2 4-3 RF Output Load For good power transfer to the RF load, the load impedance should be as closely matched to the output impedance of the amplifier as possible. A VSWR of less than 1.
044-05117 Figure 4-1. Functional Block Diagram 4-4.1 Preamplifier The RF carriers are applied to the input port of the amplifier, where they are fed to the preamplifier stage. The preamplifier provides two stages of class-A mode-amplification. The output of the preamplifier is then split into two paths, one to the main amplifier and one to the error amplifier. 4-4.2 Main and Error Amplifiers The main amplifier provides the balance of gain and power (refer to Table 1-1 for amplifier specifications).
044-05117 loop fault occurs. When this happens, an alarm indicator is illuminated on the front panel of the subrack. The fault is transmitted back to an external summary module via the external alarm interface connection on the front panel of the subrack. 4-4.4 First and Second Loop Control Circuits The primary function of the first loop is to amplify the carrier signals and isolate an error signal for the second loop.
044-05117 4-7 Amplifier Alarms Causes for MCPA alarms are given in Table 4-1. Conditions external to the amplifier should be investigated before replacing the amplifier, particularly if more than one amplifier exhibits a critical alarm. Alarm conditions are reported to the amplifier subrack via RS-485 or TTL interfaces. Other than the front panel LEDs (described in chapter 3), there are no other visual aids for the technician. Table 4-1.
044-05117 Major Alarm - Causes MCPA RF section to be disabled Amplifier Alarm Definition Amplifier Mode Minor Alarm - Does not cause MCPA RF section to be disabled Auto-Recovery Event/Fault Log Loop converges. Tries to auto recover 10 times before permanent shut down. 2 minutes and 5 seconds for each try.
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044-05117 Chapter 5 5-1 Maintenance Introduction This chapter contains periodic maintenance and performance test procedures for the G3L-850-135 Multi-Carrier Power Amplifier (MCPA). Check your sales order and equipment warranty before attempting to service or Note repair the unit. Do not break the seals on equipment under warranty or the warranty will be null and void. Do not return equipment for warranty or repair service until proper shipping instructions are received from the factory.
044-05117 Table 5-2. Test Equipment Required Nomenclature Manufactu rer Model Signal Generator Agilent 8656B 20 dB Attenuator, 250 Watt Bird 20 dB Attenuator, 20 Watt (2 each) Bird Tenuline Spectrum Analyzer Agilent 8560E Coax Directional Coupler Agilent 778D Power Meter / Sensor Agilent 437B / 8481A Arbitrary Waveform Generator Sony AWG2021 Network Analyzer Agilent 8753C * Any Equipment substitutions should have equivalent specifications.
044-05117 7. Switch off the Main Power Switch on the amplifier under test. 20 dB Directional Coupler 27 Vdc Power Meter HP 437B 30 dB Attn RF Out G3L-850-135 PYTHON MultiChannel Power Amplifier Gain = 63 dB Output = 135 W = +51.3 dBm 250 W High Pwr RF In +1.3 dBm* Sensor Head 8482A Power Meter HP 8648 A Signal Source 20 dB Directional Coupler 30 dB Attn Spectrum Analyzer HP 8560 E 20 W Sensor Head 8482A INPUT TEST CONFIGURATION A 04-0262B-A +1.3 dBm* * Example.
044-05117 27 Vdc RF Out G3L-850-135 PYTHON MultiChannel Power Amplifier Gain = 63 dB Output = 135 W = +51.3 dBm 250 W RF In 40 dB Attn HP 8753 D Network Analyzer PORT 1 PORT 2 +1.3 dBm* TEST CONFIGURATION B * Example. Ensure that sufficient attenuation is present between the amplifier output and your test equipment to avoid overdrive or damage. Refer to test equipment specifications. 04-0263B-A Figure 5-2. Amplifier Test Setup – Configuration B 5-4.3 Input Return Loss: 1.
044-05117 5-4.4 Test Data Sheet Record the amplifier’s performance test data below. MODULE S/N DATE Test Conditions: Load and Source Impedance: 50 Ohms VSWR: < 1.5:1 Supply Voltage: +27 Vdc ±0.1 Vdc Table 5-3. Amplifier Performance Data Test Specification RF Gain Min Max Data Vcc = 27 Vdc PO = See table 1-4 62.5.0 dB 63.5 dB Freq. = 869 – 894 MHz Spurious Emissions Vcc = 27 Vdc PO = See table 1-2 -62 dBc 869 – 894 MHz Band Gain Flatness Vcc = 27 Vdc PO = See table 1-2 ±0.
044-05117 5-5 Return For Service Procedures When returning products to Powerwave, the following procedures will ensure optimum response. 5-5.1 Obtaining An RMA A Return Material Authorization (RMA) number must be obtained prior to returning equipment to the factory for service. Please contact our Repair Department at (714) 466-1000 to obtain this number, or FAX your request to (714) 466-5800. Failure to obtain this RMA number may result in delays in receiving repair service. 5-5.
044-05117 Appendix A Abbreviations and Acronyms Below is a list of the abbreviations and acronyms used in the industry.
044-05117 Abbreviation/ Acronym Definition {Continuous Wave dB deciBels dBc Referenced to a carrier level dBm Reference to one milliwatt dBw Reference to one watt DIN Deutsches Insitut für Normung eV DLNA Duplexer Low Noise Amplifier DPTT Digital Push To Talk DQPSK Differential Quadrature Phase Shift Keyed DSP Digital Signal Processing DUT Device Under Test ECD Estimated Completion Date ECM Electronic Counter Measure EDGE Enhanced Data for GSM Evolution EEPROM Electrically-Erasa
044-05117 Abbreviation/ Acronym Definition GSM Global System for Mobile Communications HPF High Pass Filter HW Hardware Hz Hertz IAW In Accordance With IC Integrated Circuit IMD InterModulation Distortion IRL Input Return Loss IS-54 Interim Standard 54 for TDMA IS-95 Interim Standard 95 for CDMA ISDN Integrated Services Digital Network ISM Industrial, Scientific and Medical unlicensed frequency bands ISO {International Organization for Standardization {ISOlator kHz Kilohertz LD
044-05117 Abbreviation/ Acronym Definition M&TE Measuring and Test Equipment NAMPS Narrow Analog Mobile Phone System NIOSH National Institute for Occupational Safety and Health NIST National Institute for Standards and Technology NMT Nordic Mobile Telephone NVM NonVolatile Memory OEM Original Equipment Manufacturer OFDM Orthogonal Frequency Division Multiplexing OMS Operational Method Sheet OOB Out Of Box O/P Output OSHA Occupational Safety and Health Administration PA Power Ampli
044-05117 Abbreviation/ Acronym Definition QA Quality Assurance QAM Quadrature Amplitude Modulation RBW Resolution BandWidth RF Radio Frequency RFI Radio Frequency Interference RFQ Request For Quotation RFS RF Solutions RFSU RF Switching Unit RGO Return Goods Order RH Relative Humidity RL Return Loss RMA {Rack-Mounted Amplifier {Return Material Authorization RMP Reliability Monitoring Plan (Procedure) RMS Root Mean Square RSS Root Sum Square Rx Receive, Receiver SCHPA Sing
044-05117 Abbreviation/ Acronym Definition UART Universal Asynchronous Receiver Transmitter UCL Upper Control Limit UCLR Upper Control Limit for Range UGL Upper Guardband Limit UL Underwriters Laboratories UMTS Universal Mobile Telecommunications System UNL Unit Nominal Level URG Unit Reference Gain USL Upper Specification Limit UUT Unit Under Test VADJ Voltage ADJust (signal name frequently found on schematic or block diagrams) VBW Video BandWidth VCO Voltage Controlled Oscillato
044-05117 Appendix 2 1 General Site Survey Form Name of Operator: Brand Name: Date: Info Source: Tel: Tel: Your Name: Email: BTS Sectors(S) To Be Equipped: Type / Supplier: Downlink Frequencies in use MHz to MHz. Uplink Frequencies in use MHz to MHz.
044-05117 Network Link Budget RF carrier power (each TRX) at BTS top connector (in dBm)? Desired RF carrier power (each TRX) at power amplifier cabinet output connector (in dBm)? Current system uplink and downlink balance or difference? Is discontinuous transmit (DTX) feature used? Power AC Voltage available for power amplifier at site: Amps Vac; Singe Phase or Three Phase? (circle one) Main Panel or Sub Panel? (circle one) Required RF Jumpers (8x8x8 configuration) 9 pieces Type N male to Type N male, ½”
044-05117 • Existing feedline cable to antenna (where power amplifier cabinet output will connect to) • Power mains circuit breaker panel (shows adequate capacity for breakers) • Misc. pictures showing tower and site access.
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044-05117 Corporate Headquarters Powerwave Technologies, Inc. 1801 East St. Andrew Place Santa Ana, CA 92705 USA Tel: 714-466-1000 Fax: 714-466-5800 www.powerwave.com Main European Office Antennvägen 6 SE-187 80 Täby Sweden Tel: +46 8 540 822 00 Fax: +46 8 540 823 40 Hong Kong Office 23 F Tai Yau Building 181 Johnston Road Wanchai, Hong Kong Tel: +852 2512 6123 Fax: +852 2575 4860 ©Copyright October 2004, Powerwave Technologies, Inc. All Rights reserved.
