G3H-851-80 Multi-Carrier Power Amplifier Installation and Service Manual 044-05xxx Rev A November 2005
© 2005 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.
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. WARNING This warning symbol means danger. You are in a situation that could cause bodily injury.
Revision Record Revision Record ii Revision Letter Date of Entry Reason for Change A November, 2005 Original version of product 044-05xxx Rev A
Table of Contents Chapter Number Chapter 1 1-1 1-2 1-3 1-4 1-5 1-5.1 Installation 2-1 Operating Instructions 3-1 Introduction ................................................................................................................................ 3-1 Controls and Indicators.............................................................................................................. 3-1 RESET Switch ................................................................................................
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 ...........................................................................................
Chapter 1 General Description 1-1 Introduction This manual contains information and procedures for installation and servicing of Powerwave’s G3H-85180 Amplifier.
0.389 in. (0.99 cm) 17.06 in. (43.33 cm) 12.09 in. (30.70 cm) 1.59 in. (4.03 cm) 13.96 in. (35.45 cm) 19.58 in. (49.73 cm) Figure 1-2. Model G3H-851-80 Amplifier Side View 1.90 in. (4.82 cm) 3.86 in. (9.80 cm) Figure 1-3.
n ESET Combo Connector – Power. Alarms, and RF I/O RS-232 Port Figure 1-4.
1-3 Specifications Electrical, mechanical, and environmental specifications for the G3H-851-80 amplifier are listed in Table 1-1. Table 1-1. G3H-851-80 Amplifier Specifications Frequency Range 851-869 MHz; Maximum Instantaneous Bandwidth 18 MHz bandwidth (lowest to highest transmitted frequency) Carrier Types IDEN, 1X-EVDO/IS-95 Minimum Channel Spacing 1.25 MHz for 1X-EVDO/IS-95, 30 kHz for iDEN Total Maximum Input Power -11.69 dBm @ 80 Watts (to achieve rated power); -11.01 dBm max. –5.
Indicators: LED; Green (normal), Yellow (minor alarm), Red (critical alarm) STATUS Dimensions: 35.46 cm wide, 9.56 cm high, 45.0 cm deep (including handles) Weight: 13 kg (28.6 lb.) Note This Powerwave product is designed to operate within the normal operating (typical operating) ranges or conditions specified in this document.
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Chapter 2 Installation 2-1 Introduction This chapter contains unpacking, inspection, and installation instructions for the G3H-851-80 Multi-Carrier Power Amplifier (MCPA). Carefully read all material in this chapter prior to equipment installation. Also, read and review the operating procedures in chapter 3 prior to installing the equipment. 2-2 Unpacking and Inspection This equipment has been operated, tested, and calibrated at the factory.
approximately 42 BTU per hour of heat. The G3H-851-80 amplifier is designed to operate within the extended low temperature and high temperature environments defined in Table 1-1. Table 2-1 describes the heat load (at 80 Watts typical) for a 3-sector (70%), 2-sector (80%), omni (90%), and typical (100%) site. Perform a site survey to determine actual air conditioning needs. Table 2-1. Averaged Heat Loading Amplifier Power No.
2-5 Installation Instructions Install the G3H-851-80 amplifier as follows: WARNING Turn off external primary DC power before connecting DC power cables. 2-5.1 Installing the Amplifier into a Sub-rack 1. Inspect the 21WA4 male combo connector (Figure 2-2) on the rear of each amplifier. Verify that all pins are straight, no pins are recessed, packing material is removed, and that the alignment shield is not bent. 2.
2-5.2 Combo Connector The power, alarm, control, and RF connections on the amplifier are made through a 21WA4 male connector, located on the rear of the amplifier. Pins are listed and described in Table 2-3. Alarms are interpreted by the amplifier sub-rack and reported to the base station as a system level alarm. 1 A1 2 3 4 5 6 7 8 9 A3 A2 A4 10 11 12 13 14 15 16 17 Figure 2-2. Combo Connector (Male, on Rear of G3H-851-80 Amplifier Module) Table 2-3.
Chapter 3 Operating Instructions 3-1 Introduction This chapter contains a description of the G3H-851-80 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 G3H-851-80 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.
Table 3-1. Status Indicator Colors and Status Control/Indicator Description STATUS (Multi-colored LED Indicator) LED Color MCPA Status Green (solid) RF enabled, Reset/On/Off switch set to On (middle position). Operation normal. Green (blinking) Standby. Yellow (solid) Minor* alarm - APC function enabled. Yellow Blinking VSWR Warning. Red (solid) Major* alarm – Critical fault present. If present on only one amplifier, amplifier replacement required.
Chapter 4 Principles of Operation 4-1 Introduction This chapter contains functional descriptions of the G3H-851-80 Multi-Carrier Power Amplifier (MCPA). 4-2 RF Input Signal The maximum input power for all carrier frequencies to the MCPA should not exceed the limits specified in Table 1-1 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 MCPA as possible. A VSWR of less than 1.
Figure 4-1. Functional Block Diagram 4-4.1 Preamplifier The RF carriers are applied to the input port of the MCPA, 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 a balance of gain and power and employs class AB amplification for maximum efficiency.
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. The primary function of the second loop is to amplify the error signal to cancel out spurious products developed in the main amplifier. The input signal is amplified by a preamplifier and fed to a coupler and delay line. The signal from the coupler is fed to the attenuator and phase shifter in the first loop.
4-7 Amplifier Alarms The amplifier alarms are listed and described in Table 4-1. The front panel LEDs are described in Chapter 3. Table 4-1. G3H-851-80 Alarm States Major Alarm Causes MCPA RF section to be disabled Minor Alarm Does not cause MCPA RF section to be disabled Amplifier Alarm Definition Amplifier Mode Auto-Recovery Event/Fault Log Output Overpower Disable the MCPA immediately if the output power is > +2 dB over rated power. Major Input power decreases below APC threshold (-11.
Loop Fail Loop convergence fail Internal DC Fail Minor Internal voltages failed or out (no LED of range display) Device Fail One or more output power devices fail 044-05177 Rev A Major Major Loop converges. Tries to auto recover 10 times before permanent shut down. Records internal DC fault event, system disable event, each auto recovery event* Auto-recovery once the voltage is within the range. After 10 attempts, if still unsuccessful, permanent shutdown.
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Chapter 5 Maintenance 5-1 Introduction This chapter contains periodic maintenance and performance test procedures for the G3H-851-80 Multi-Carrier Power Amplifier (MCPA). Note 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.
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 substituted should have equivalent specifications.
20 dB Directional Coupler 27 Vdc Power Meter HP 437B 30 dB Attn RF Out G3H-851-80 PYTHON MultiChannel Power Amplifier Gain = 63 dB Output = 80 W = +49.03 dBm 250 W High Pwr RF In 20 dB Attn 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.
27 Vdc RF Out G3H-851-80 PYTHON MultiChannel Power Amplifier Gain = 63 dB Output = 80 W = +49.03 dBm 250 W RF In 40 dB Attn Network Analyzer HP 8753 D 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.
5-4.4 Test Data Sheet Record the amplifier’s performance test data below. DATE MODULE S/N 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 Vcc = 27 Vdc PO = See Table 1-1 Min Max 62.5 dB 63.5 dB Data Freq. = 851 – 869 MHz Spurious Emissions Vcc = 27 Vdc PO = See Table 1-1 -63 dBc 851 – 869 MHz Band Gain Flatness Vcc = 27 Vdc PO = See Table 1-1 ±0.
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Appendix A Abbreviations and Acronyms Below is a list of the abbreviations and acronyms used in the industry.
Abbreviation/ Acronym Definition 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-Erasable Programmable Read-Only
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 LDA Linear
Abbreviation/ Acronym Definition MU Measurement Uncertainty 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 Administrati
Abbreviation/ Acronym Definition PTT Push To Talk PWAV Powerwave QA Quality Assurance QAM Quadrature Amplitude Modulation RBW Resolution Band Width 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 Rec
Abbreviation/ Acronym Definition TRX Transceiver (Transmit / Receiver) Unit Tx Transmit, Transmitter UAI Use As Is 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 schemat
NOTES
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 January 2005, Powerwave Technologies, Inc. All Rights reserved.
