869-894 MHz G3S-800-180-29 Installation & Service Manual Multi-Carrier Power Amplifier 869 – 894 MHz 180 Watts Average Power (210 W Max.) -60 dBc Intermodulation Distortion Copyright Powerwave Technologies, Inc., April 2002. All rights reserved 044-05112 Rev.
G3S-800-180-029 Installation & Service Manual © 2002 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. April 2002 Powerwave Technologies, Inc.
G3S-800-180-029 Installation & Service Manual Table Of Contents Section 1 General Description Par. No. 1-1 1-2 1-3 1-4 1-5 Page No. Introduction.......................................................................................................................................................... 1-1 General Description.......................................................................................................................................... 1-1 Functional And Physical Specifications ....
G3S-800-180-029 Installation & Service Manual Section 5 Maintenance 5-1 5-2 5-3 5-4 5-5 5-5.1 5-5.1.1 5-5.1.2 5-5.1.3 5-5.1.4 5-5.1.5 5-6 5-6.1 5-6.2 Introduction.......................................................................................................................................................... 5-1 Periodic Maintenance.......................................................................................................................................
G3S-800-180-029 Installation & Service Manual List Of Tables Table No. 1-1 1-2 2-1 2-2 2-3 2-4 2-5 3-2 5-1 5-2 5-3 Major Amplifier Components........................................................................................................................... 1-2 G3S-800-180-029 MCPA Functional Specifications .................................................................................... 1-2 Sample of DC Cable Ratings................................................................................
G3S-800-180-029 Installation & Service Manual Section 1 General Description 1-1 Introduction This manual contains information and procedures for installation, operation, and maintenance of Powerwave’s G3S-800-180-029 multicarrier cellular amplifier. The manual is organized into six sections as follows: Section 1. General Description Section 2. Installation Section 3. Operating Instructions Section 4. Principles of Operation Section 5. Maintenance Section 6.
G3S-800-180-029 Installation & Service Manual 1-5 Ordering Information Table 1-1 following gives the part numbers and descriptions to be used when ordering either an entire amplifier or replacement fans. Table 1-1 Major Amplifier Components Model Number G3S-800-180-029 800-01075-003 800-00972-002 Description 180 W 869-894 MHz MCPA Module Front fan assembly Rear fan assembly.
G3S-800-180-029 Installation & Service Manual Figure 1-1 G3S-800-180-029 Copyright Powerwave Technologies, Inc., April 2002. All rights reserved All specifications are subject to change without notice. Contact the factory for complete performance data. 044-05112 Rev.
G3S-800-180-029 Installation & Service Manual Section 2 Installation 2-1 Introduction This section contains installation recommendations, unpacking, inspection, and installation instructions for the Multicarrier Cellular Amplifier. Carefully read all material in this section prior to equipment unpacking or installation. Also read and review the operating procedures in Section 3 prior to installing the equipment. It is important that the licensee perform these tasks correctly and in good faith.
G3S-800-180-029 Installation & Service Manual 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. Table 2-2 describes the current load for a 3 sector (70%), 2 sector (80%) and omni (90%) site. Based on this table, an 800 amp power plant may suffice.
G3S-800-180-029 Installation & Service Manual Visually inspect the amplifier module for damage that may have occurred during shipment. Check for evidence of water damage, bent or warped chassis, loose screws or nuts, or extraneous packing material in the connector or fans. Inspect the rear panel connector for bent connector pins. If the equipment is damaged, a claim should be filed with the carrier once the extent of any damage is assessed.
G3S-800-180-029 Installation & Service Manual 11. 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 Powerwave before you turn on your amplifier system. 12. Refer to section 3 for initial turn-on and checkout procedures. 2-6 Amplifier Module Connectors The amplifier has three connectors on the right rear of the module.
G3S-800-180-029 Installation & Service Manual Table 2-4 Amplifier Module DC and Logic Connector Definition Pin Function Description A1 A2 A3 A4 1 2 3 4 Power Input Power Input Ground Ground RS485 +TxD RS485 +RxD Service Loop MCPA Disabled (Summary Fault) 5 6 7 8 9 10 11 12 13 14 Mod Addr 0 Mod Addr 1 TP1 Manual Download DC on stat RS485 –TxD RS485 –RxD SCL7 SDA7 FP Disable Output 15 FP RST 16 17 GND Module Detect +27 Vdc (Power Contact) +27 Vdc (Power Contact) Ground (Power Contact) Ground (Power
G3S-800-180-029 Installation & Service Manual Section 3 Operating Instructions 3-1 Introduction This section contains operating instructions for the Multicarrier Cellular Amplifier System. 3-2 Location And Function Of Amplifier Module Controls And Indicators Primary +27 Vdc power is applied to the amplifier via a 100-amp circuit breaker (ON-OFF) located on the left side of the amplifier front panel.
G3S-800-180-029 Installation & Service Manual Reset (up position) - When toggled to reset position, all the red LED indicators will turn on one at a time in sequence followed by all the green indicators one at a time in sequence; this will also reset the fault latches. If the switch is held in the reset position, a microcontroller reset will occur. This will be verified by the LEDs toggling state again. The switch is spring loaded to return to the normal ON position when released.
G3S-800-180-029 Installation & Service Manual Table 3-1 Amplifier Module Alarm Indicators Definition Alarm Mode LED MCPA Disable signal Condition Module (pin 4 inTable 2-1) Over Pwr Critical Red Disable High Over Pwr Critical High Temp Minor Red Red Disable Enable High Low High Temp Critical Red Disable High MCPA MCPA module output power >220 watts (Note 4) Input power >-3 dBm High temperature detected High temperature detected for longer than two minutes 14.
G3S-800-180-029 Installation & Service Manual 3-3 Initial Start-Up And Operating Procedures The amplifier module has two operating controls, both located on the front face of the module: the power ON - OFF switch and the RF ON - ON/OFF/RESET switch (refer to figures 1-1 and 3-1). To perform the initial start-up, proceed as follows: 1. Verify that all input and output cables are properly connected.
G3S-800-180-029 Installation & Service Manual Section 4 Principles of Operation 4-1 Introduction This section contains a functional description of the Multicarrier Cellular Amplifier. 4-2 RF Input Signal This amplifier may be installed in a base station system as either a stand-alone module (i.e. in a micro-cell application), or combined with multiple amplifiers in a combining subrack product available from Powerwave.
G3S-800-180-029 Installation & Service Manual fied by a preamp and coupled to an attenuator and phase shifter in the first feed-forward loop. The main signal is phase shifted by 180 degrees and amplified in the premain amplifier. The output from the premain amplifier is fed to the class AB main amplifier. The output from the main amplifier is typically 220 watts. The signal is output to several couplers and a delay structure.
G3S-800-180-029 Installation & Service Manual for subsequent remote monitoring via the ALARMS connector. Refer to paragraph 2-6 as well as figure 2-2 and table 2-3 for a description of the ALARMS connector. 4-4.4 Amplifier Module Cooling Although each amplifier module contains its own heat sink, it is cooled with forced air. Four fans are used for forced air-cooling and redundancy.
G3S-800-180-029 Installation & Service Manual Section 5 Maintenance 5-1 Introduction This section contains periodic maintenance and performance test procedures for the Multicarrier Cellular Amplifier. It also contains a list of test equipment required to perform the identified tasks. NOTE Check your sales order and equipment warranty before attempting to service or repair the unit. Do not break the seals on equipment under warranty or the warranty will be null and void.
G3S-800-180-029 Installation & Service Manual Table 5-2 Test Equipment Required Nomenclature Signal Generator 30 dB Attenuator, 500 Watt 20 dB Attenuator, 20 Watt (2 each) Spectrum Analyzer Coax Directional Coupler Power Meter/Sensor Network Analyzer Current Probe Manufacturer RDL Weinschel Corp. Tenuline Model IMD-801D-03A 53-30-34 H.P. H.P. H.P. H.P. 8560E 778D 437B/8481A 8753C 5-4 Cleaning Air Inlets/Outlets The air inlets and outlets should be cleaned every 30 days.
G3S-800-180-029 Installation & Service Manual 20 dB Directional Coupler Unit Under Test +27 Vdc Gnd 30 dB Attenuator 20 dB Attenuator 500 W 20 W RF Out G3S-800-180 Plug-in Amplifier Module Power Meter RF In 1:2 Splitter Spectrum Analyzer 8651E Network Analyzer 8753C Filter / Isolator Signal Generator Sensor Head 8482A Sensor Head 8482A Power Meter Figure 5-1 Amplifier System Test Setup Diagram 5-5.1.1 Amplifier IMD Test And Current Test 2. Adjust attenuator for an input signal at -10 dBm.
G3S-800-180-029 Installation & Service Manual 5-5.1.4 Spurious Test 8. With the power amplifier set at 180 watts power output, use the spectrum analyzer and check the frequency band from 869 MHz to 894 MHz for spurious signals. Spurious signals should be -60 dBc maximum. Record test data in table 5-3. 5-5.1.5 Input Return Loss Test 9. Reset and turn on amplifier module. Read and record the S11 return loss measurement on network analyzer. Input return loss should be –16 dB maximum.
G3S-800-180-029 Installation & Service Manual 5-6 Field Replaceable Parts And Modules The following parts and modules can be replaced in the field on site by a qualified technician with experience maintaining RF power amplifiers and similar equipment: 1. G3S-800-180-029 power amplifier modules 2. Cooling fans 5-6.1 G3S-800-180-029 Power Amplifier Module To replace a power amplifier module, proceed as follows: 1.
G3S-800-180-029 Installation & Service Manual 5-6.2 Cooling Fans To replace a front cooling fan, proceed as follows: 1. Loosen four snap fasteners that secure fan to amplifier module. Disconnect fan power connector from amplifier module. To replace a rear cooling fan, proceed as follows: 1. Remove amplifier module from subrack; see paragraph 5-6.1 preceding. 1. Loosen the four Phillips head screws that secure the fan to the amplifier module.
G3S-800-180-029 Installation & Service Manual Section 6 Troubleshooting 6-1 Introduction This section contains a list of problems and a few suggested actions that may correct the problem. If the suggested corrective action does not eliminate the problem, please contact your Powerwave field representative or the factory for further instructions. NOTE Check your sales order and equipment warranty before attempting to service or repair the unit.
G3S-800-180-029 Installation & Service Manual bles, transmit filter, and directional coupler are in proper working order. The loss between the amplifier subrack and the hatch plate is typically less than 2.0 dB. 3. 4. If only one or two amplifiers in a given amplifier subrack are in Over Pwr and the LPA Disable LED is blinking, then the amplifier subrack is probably in Sleep Mode (smart subracks with True RMS power detectors and voltage variable attenuators only). A.
G3S-800-180-029 Installation & Service Manual 6-2.5 DC FAIL Illuminated If an amplifier is in DC FAIL and the LPA Disable LED is illuminate, then one of the four amplifier DC voltages is either out of tolerance or not present. Return the amplifier to the factory for repair. 6-2.6 FAN FAIL Illuminated If an amplifier is in FAN FAIL, then the one of the amplifier’s cooling fans has failed. Replace the fan.
G3S-800-180-029 Installation & Service Manual 6-3 Return For Service Procedures When returning products to Powerwave, the following procedures will ensure optimum response. 6-3.1 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 (888) 797-9283 or (714) 4661000 to obtain this number, or FAX your request to (714) 466-5816.
