E675JS0042Linear Feed-Forward Power Amplifier

044-05055 Rev. A INSTALLATION & SERVICE MANUAL G3X-800 SERIES (NTL107AA) AMPLIFIER MCR20XX SERIES (NTL107AC) SUBRACK 18 November 1999 Powerwave Technologies, Inc.Tel: (949) 809-1100 2026 McGaw AvenueFax: (949) 757-0941 Irvine, CA 92614Web Site: www.powerwave.com

044-05055 Rev. A ii TABLE OF CONTENTS Par.Section 1Page No. General DescriptionNo. 1-1Introduction .......................................................................................................................1-1 1-2General Description..........................................................................................................1-1 1-3Functional and Physical Specifications.............................................................................1-2 1-4Equipment Changes .........................................................................................................1-2 1-5Ordering Information.........................................................................................................1-2 Section 2 Installation 2-1Introduction .......................................................................................................................2-1 2-2Electrical Service Recommendations ...............................................................................2-1 2-3Unpacking and Inspection ................................................................................................2-1 2-4Installation Instructions .....................................................................................................2-2 2-5J1 SYSTEM ALARM Connector .......................................................................................2-5 2-6J7 RS485 Connector ........................................................................................................2-6 2-7J8 MICRO-PROCESSOR INTERFACE Connector .........................................................2-7 2-8Amplifier Module Status, Alarm, Control, and Power Connector......................................2-8 2-9Amplifier Module RF Connector .......................................................................................2-9 Section 3 Operating Instructions 3-1Introduction .......................................................................................................................3-1 3-2Location and Function of Amplifier Module Controls and Indicators ................................3-1 3-3Initial Start-Up and Operating Procedures........................................................................3-5 Section 4 Principles of Operation 4-1Introduction .......................................................................................................................4-1 4-2RF Input Signal .................................................................................................................4-1 4-3RF Output Load ................................................................................................................4-1 4-4System Functional Description .........................................................................................4-1 4-5MCR20XX Series (NTL107AC) Subrack ..........................................................................4-2 4-6G3X-800 Series (NTL107AA) Amplifier Module ...............................................................4-3 4-6.1Main Amplifier ...................................................................................................................4-4 4-6.2Error Amplifier...................................................................................................................4-4 4-6.3Amplifier Monitoring..........................................................................................................4-4 4-6.4Amplifier Module Cooling..................................................................................................4-4 4-7Power Distribution.............................................................................................................4-4 4-8Intermodulation.................................................................................................................4-4 4-8.1Two Tone Intermodulation................................................................................................4-5 4-8.2Multitone Intermodulation .................................................................................................4-5 4-9Alarms ..............................................................................................................................4-5 044-05055 Rev. A iii TABLE OF CONTENTS (Continued) Par.Section 5Page No. MaintenanceNo. 5-1Introduction .......................................................................................................................5-1 5-2Periodic Maintenance .......................................................................................................5-1 5-3Test Equipment Required For Test ..................................................................................5-1 5-4Cleaning Air Inlets/Outlets ................................................................................................5-2 5-5Performance Test .............................................................................................................5-2 5-5.1Amplifier System Performance Test.................................................................................5-2 5-6Field Replaceable Parts and Modules ..............................................................................5-6 5-6.1G3X-800 Series (NTL107AA) Power Amplifier Module ....................................................5-6 5-6.2Cooling Fans ....................................................................................................................5-6 Section 6 Troubleshooting 6-1Introduction .......................................................................................................................6-1 6-2Troubleshooting................................................................................................................6-1 6-3Return for Service Procedure ...........................................................................................6-1 6-3.1Obtaining an RMA ...........................................…

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044-05055 Rev. A1-1 GENERAL DESCRIPTION 1-1. INTRODUCTION This manual contains information and procedures for installation, operation, and maintenance of Powerwave’s Generation 3.1 amplifier system. 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. Troubleshooting 1-2. GENERAL DESCRIPTION The G3X-800 Series (NTL107AA) amplifier (figure 1-1) is a linear, feed-forward power amplifier that operates in the 25-MHz frequency band from 869 MHz to 894 MHz. The amplifier can simultaneously transmit multiple frequencies, with better than -65 dBc third order intermodulation distortion (IMD). The amplifier system is modular in design, and is ideally suited for use in AMPS/TDMA/CDMA base stations. The plug-in G3X-800 Series (NTL107AA) amplifier modules can each provide 110 watts of power and function completely independently of each other. The amplifier modules are designed for parallel operation to produce high peak power output and backup redundancy for remote applications. The system is housed in the MCR20XX Series (NTL107AC) subrack (figure 1-2) which holds two G3X-800 Series (NTL107AA) amplifiers to produce up to 200 watts output. All solid-state, the system is designed to provide trouble-free operation with minimum maintenance. The system's modular construction and unique and highly effective LED-based operational status and fault indicators help minimize downtime. The turn-on and turn-off sequences of voltages are fully automatic, as is overload protection and recycling. Inadvertent operator damage from front panel manipulation is virtually impossible. Notice To comply with FCC regulations, no channels existing within 200 kHz spacing from the edges of any frequency block are to be used for transmission. The MCR20XX Series (NTL107AC) subrack contains an RF power splitter/combiner and a control module that monitors the functional status of all plug-in amplifiers. The rear panel of the subrack has the system RF I/O connectors and DC power input terminals. The front panel of each amplifier module has unit level status/fault indicators and a power on/off circuit breaker. Primary power for the amplifier system is +27 Vdc. Cooling for each plug-in amplifier module is provided by two fans mounted on the front and two on the rear of the module. The fans draw outside air through the front of the module and exhaust hot air out through the rear of the module. Section 1 044-05055 Rev. A1-2 1-3. FUNCTIONAL AND PHYSICAL SPECIFICATIONS Functional and physical specifications for the amplifier system are listed in table 1-2. 1-4. EQUIPMENT CHANGES Powerwave Technologies, Inc. reserves the right to make minor changes to the equipment, including but not necessarily limited to component substitution and circuitry changes. Changes that impact this manual may subsequently be incorporated in a later revision of this manual. 1-5. ORDERING INFORMATION Table 1-1 following gives the part numbers and descriptions to be used when ordering either an entire system or individual major components that comprise the system. Table 1-1. Major System Components SYSTEM ORDER NUMBER DESCRIPTION OF SYSTEM NUMBER SUB- COMPONENT MODEL NUMBER QTY PER SYSTEM DESCRIPTION OF SUB- COMPONENT MODEL NUMBER MCR20XX Series (NTL107AC) 200 W 869-894 MHz Linear System for Base Station Equipment. MCR20XX Series (NTL107AC) 12-Unit 23” Subrack. G3X-800 Series (NTL107AA) 2110 W 869-894 MHz Amplifier Module. 800-00972-0014Front fan assembly (Intake) 800-00972-0024Rear fan assembly (Exhaust) 044-05055 Rev. A1-3 044-05055 Rev. A1-4 044-05055 Rev. A1-5 Table 1-2. Generation 3.1 Multicarrier Cellular Amplifier System Functional Specifications Frequency Range:869-894 MHz Total Output Power (Minimum) in MCR20XX (NTL107AA) System: 110 W typical (1 Module) 200 W typical (2 Modules) Maximum Input PowerOverdrive fault activates when input power >5 dBm Intermodulation Distortion and In-Band Spurious: -68 dBc (Typical) @ +24 to +28 Vdc @ 200 Watts (-65 dBc (Max) @ +21.7 to +24 Vdc) Nominal RF Gain: 31 ±1 dB to 49 ±1 dB Adjustable Gain Variation: ± 0.6 dB @ 27 Vdc ±1 Vdc + 0.6 / -0.8 dB @ 24 to 26 Vdc Output Port Return Loss:16 dB (Min) Output Protection:Mismatch Protected (Isolator) Input Port Return Loss:16 dB (Min) Second Harmonic:-13 dBm (Max) Out of Band Spurious:-60 dBc (Max) @ +24 to +28 Vdc DC Input Voltage:21.7 to 30 Vdc (24 to 28 Vdc for rated operation) DC Input Current: 110 Amps (Typical) @ 27 ±1 Vdc Input, 200 Watts PA Self Protection:MCA Disabled Upon 5-Second Continuous Alarm Operating Temperature:-5 ºC to +60 ºC Ambient Storage Temperature:-40 ºC to +85 ºC Operating Humidity:5% - 95% Relative Humidity (Noncondensing) Storage Humidity:0% - 95 % Relative Humidity (Noncondensing) Connectors DC Power: RF INPUT: RF OUT (Antenna): SYSTEM ALARM: RS-485 MICROPROCESSOR INTERFACE ¼-20 studs SMA Type N 9-Pin D-Subminiature Female 9-Pin D-Subminiature Female 9-Pin D-Subminiature Female AlarmsOver Power, VSWR, DC Failure, High Temperature, Loop Failure, Fan Failure MonitorsForward Power and Reverse Power Dimensions: G3X-800 Series (NTL107AA) Amplifier: MCR20XX Series (NTL107AC) Subrack: 5.22" High, 17.00” Wide, 20.44” Deep (Including handles, rear fans) 11.33” High, 23.00” Wide, 22.77” Deep (With amplifiers inserted)

044-05055 Rev. A2-1 INSTALLATION 2-1. INTRODUCTION This section contains installation recommendations, unpacking, inspection, and installation instructions for the Multicarrier Cellular Amplifier System. 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. Section 3 contains applicable standards imposed by the Federal Communications Commission. It is important that the licensee perform these tasks correctly and in good faith. Carefully read Parts 73 and 74 of the FCC rules to determine how they apply to your installation. DON'T TAKE CHANCES WITH YOUR LICENSE. 2-2. ELECTRICAL SERVICE RECOMMENDATIONS Powerwave Technologies recommends that proper AC line conditioning and surge suppression be provided on the primary AC input to the +27 Vdc power source. All electrical service should be installed in accordance with the National Electrical Code, any applicable state or local codes, and good engineering practice. Special consideration should be given to lightning protection of all systems in view of the vulnerability of most transmitter sites to lightning. Lightning arrestors are recommended in the service entrance. Straight, short ground runs are recommended. The electrical service must be well grounded. Each amplifier system should have its own circuit breaker, so a failure in one does not shut off the whole installation. Circuit breakers should be thermal type, capable of handling the anticipated inrush current, in a load center with a master switch. 2-3. UNPACKING AND INSPECTION This equipment has been operated, tested, and calibrated at the factory. Only in the event of severe shocks or other mistreatment should any substantial readjustment be required. Carefully open the containers and remove the subrack and amplifier modules. Retain all packing material that can be reassembled in the event that the unit must be returned to the factory. CAUTION Exercise care in handling equipment during inspection to prevent damage caused by rough or careless handling. Visually inspect the amplifier subrack and modules 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 connectors or fans. Inspect all connectors 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. We cannot stress too strongly the importance of IMMEDIATE careful inspection of the equipment and the subsequent IMMEDIATE filing of the necessary claims against the carrier if necessary. If possible, inspect the equipment in the presence of the delivery person. If the equipment is damaged, the carrier is your first area of recourse. If the equipment is damaged and must be returned to the factory, write or phone for a return authorization. Powerwave may not accept returns without a return authorization. Claims for loss or damage may not be withheld from any payment to Powerwave, nor may any payment due be withheld pending the outcome thereof. WE CANNOT GUARANTEE THE FREIGHT CARRIER'S PERFORMANCE. Section 2 044-05055 Rev. A2-2 2-4. INSTALLATION INSTRUCTIONS The MCR20XX Series (NTL107AC) 23-inch subrack, which holds two amplifier modules, is designed for installation in a rack or cabinet that permits access to the rear of the amplifier system for connection of DC power, RF, and control and monitor cables. The location and function of the system interface connectors are shown in figures 2-1, 2-2, 2-3, and 2-4, and are described in tables 2-1, 2-2, 2-3, and 2-4. The plug-in amplifier module connectors are shown in figures 2-5 and 2-6, and are described in tables 2-5 and 2-6. Table 2-1. MCR20XX Series Subrack Power, Monitor, Control, and Input/Output Connectors NO.NAMEFUNCTION J1SYSTEM ALARM Connector9-Pin female D-Sub connector. Form C alarms. Refer to figure 2-2 and table 2-2 for individual pin signals. J2 R R F F O O U U T T C C o o n n n n e e c c t t o o r rType N female coax connector. Output to antenna. Refer to table 1-2 for power output level of one or two amplifier module systems. J3+27V ConnectorTwo ¼-20 Studs, +27 Vdc power input, MCPA #1 J4RTN connectorTwo ¼-20 Studs, power return, MCPA #1 J5+27V ConnectorTwo ¼-20 Studs, +27 Vdc power input, MCPA #2 J6RTNTwo ¼-20 Studs, power return, MCPA #2 J7RS485 Connector9-Pin female D-Sub connector. RS-485/Addressing serial communication. Refer to figure 2-3 and table 2-3 for individual pin signals. J8MICRO-PROCESSOR INTERFACE Connector 9-Pin female D-Sub connector. RS-485 and RS-232 serial communication. Refer to figure 2-4 and table 2-4 for individual pin signals. J9RF INPUT ConnectorSMA female coax connector. Refer to table 1-2 for power input level to amplifier module system. To install the amplifier system proceed as follows: 1. Insert subrack in equipment rack or cabinet and secure in place with eight screws 2. Refer to figure 2-1 for the location of all subrack input/output connectors. 3. Connect antenna cable to J2 RF OUT type N connector on rear of subrack. WARNING Turn off external primary DC power before connecting DC power cables. 4. Remove protective cover over power terminal studs; do not discard. Connect positive primary power for MCPA #1 (the upper amplifier) to J3 +27V studs and negative primary power (return) to J4 RTN studs. Connect positive primary power for MCPA #2 (the lower amplifier) to J5 +27V studs and negative primary power (return) to J6 RTN studs. Tighten all connections. WARNING Replace protective cover over power terminal studs. Failure to replace cover properly could result in personal injury and damage to equipment in the event of a short circuit. 5. Connect transceiver or exciter output to J9 RF IN SMA-type connector on the rear of the subrack. 044-05055 Rev. A2-3 044-05055 Rev. A2-4 6. As required by the specific facility, one or more of th…

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044-05055 Rev. A3-1 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. The plug-in amplifier module RF control and indicators, located in the center of the amplifier front panel between the cooling fans, are shown in figure 3-1. The status and RF control functions are described in detail in table 3-1. The alarms are described in detail in table 3-2. Figure 3-1. G3X-800 Series (NTL107AA) Amplifier Module Control and Indicators Section 3 044-05055 Rev. A3-2 Table 3-1. Amplifier Module Status Indicators and RF Control NAMEFUNCTION (Note: MCPA = Multicarrier Power Amplifier) +27VDC Indicator Green LED. When lit, indicates that the +27 Vdc supply is greater than +21 Vdc and less than +31 Vdc. If the +27 Vdc indicator goes out, the DC FAIL indicator will illuminate. This indicates that the +27 Vdc volt- age dropped below +21 Vdc. +15VDC Indicator Green LED. When lit, indicates that the +15 Vdc supply is greater than +12 Vdc and less than +17 Vdc. If the +15 Vdc indicator goes out, the DC FAIL indicator will illuminate. This indicates that the +15 Vdc volt- age dropped below +12 Vdc or increased above +17 Vdc. +5VDC IndicatorGreen LED. When lit, indicates that the +5 Vdc supply is greater than +2 Vdc and less than +7 Vdc. If the +5 Vdc indicator goes out, the DC FAIL indicator will illuminate. This indicates that the +5 Vdc voltage dropped below +2 Vdc or increased above +7 Vdc. -5VDC IndicatorGreen LED. When lit, indicates that the -5 Vdc supply is greater than -7 Vdc and less than -2 Vdc. If the -5 Vdc indicator goes out, the DC FAIL indicator will illuminate. This indicates that the -5 Vdc voltage dropped below -7 Vdc or increased above -2 Vdc. RF ON SwitchThree position switch: Off (down position) - Turns off amplifier module. On (center position) - Normal amplifier on position. 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 re- set 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. If a fault occurs and the MCPA is disabled, the alarms can be cleared and the MCPA enabled by this reset position. The functions of the switch are disabled for five seconds after a power-up condition. 044-05055 Rev. A3-3 Table 3-2. Amplifier Module Alarm Indicators Definition A ‘Minor Alarm’ will flag a potential fatal problem by the LEDs and the MCPA fault will be in evaluation. A ‘Critical Alarm’ is indicative of a fatal problem. The fault indicator will latch on and the MCPA module will be disabled. A ‘Major Alarm’ indicates a major problem but the MCPA module will not be disabled. Both ‘Major Alarm’ and ‘Critical Alarm’ will be sent to the host system via J1 in the back plane of the MCPA subrack (see figures 2-1 and 2-2). ALARMCATEGORYLED MCPA MODULE MCPA DISABLE SIGNAL (Pin 4 in Table 2-5) CONDITION LPA DISAB.CriticalRedDisableHighUnit is manually switched off using the front panel RF ON switch, or dis- abled by a serial command or auto shutdown by an alarm condition. Fan Fail (one)MajorRedEnableLowAny fan failure VSWRMinorRedEnableLowReflected power detected at output >25 W VSWRCriticalRedDisableHighReflected power detected at output >80 W longer than approx. two min. Low PwrMinorRedEnableLowRack controller detected MCPA out- put is 3 dB below that of the other MCPA in the system. Low PwrCriticalRedDisableHighRack controller detected low power condition for more than approx. two minutes DC FailMinorRedEnableLowOne of the internal DC voltages dropped below or exceeded the safe threshold level DC FailCriticalRedDisableHighVoltage out of range for longer than approx. two minutes (Note 2) DC Fail (Over voltage) MinorRedDisableLow+27 Vdc input >31 V detected (note 3) DC Fail (Over voltage) CriticalRedDisableHigh+27 Vdc input >30 V for longer than one sec. after initial detection of DC input >31 V (Note 3) High TempMinorRedEnableLowHigh temperature detected High TempCriticalRedDisableHighHigh temperature detected for longer than two minutes Loop FailMinorRedEnableLowLoop failure detected Loop FailCriticalRedDisableHighLoop failure detected longer than two minutes Over PwrCriticalRedDisableHighMCPA module output power >200 watts (Note 4) Over PwrCriticalRedDisableHighInput power >5 dBm NOTES: 1. RS-485 serial alarm will follow LED status. 2. The appropriate status LED shall turn off indicating which voltage is out of its range. 3. When overvoltage is detected: a) MCPA shall shut down (disable) b) Turn on red DC Fail LED c) Set flag for DC Fail alarm 044-05055 Rev. A3-4 4. When overpower is detected: a) MCPA shall shut down (disable) b) Turn on Over Pwr LED c) Set flag for Over Pwr alarm d) The MCPA module shall use a peak power detector to determine the overpower fault. 3-3. INITIAL START-UP AND OPERATING PROCEDURES Each 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. To perform the initial start- up, proceed as follows: 1. Double check to ensure that all input and output cables are properly connected. CAUTION Before applying power, make sure that the input and output of the amplifier are properly terminated at 50 ohms. Do not operate the amplifier without a load attached. Refer to table 1-2 for input power requirements. Excessive input power may damage the amplifier NOTE The output coaxial cable between the amplifier and the antenna must be 50 ohm coaxial cable. Use of any other cable w…

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044-05055 Rev. A4-1 PRINCIPLES OF OPERATION 4-1. INTRODUCTION This section contains a functional description of the Multicarrier Cellular Amplifier System. 4-2. RF INPUT SIGNAL The maximum input power for all carrier frequencies should not exceed the limits specified in table 1-2. For proper amplifier loop balance, the out of band components of the input signals should not exceed -60 dBc. The input VSWR should be 2:1 maximum (or better). 4-3. RF OUTPUT LOAD The load impedance should be as good as possible (1.5:1 or better) in the working band for good power transfer to the load. If the amplifier is operated into a filter, it will maintain its distortion characteristics outside the signal band even if the VSWR is infinite, provided the reflected power does not exceed one watt. A parasitic signal of less than one watt incident on the output will not cause distortion at a higher level than the normal forward distortion (i.e. -60 dBc). 4-4. SYSTEM FUNCTIONAL DESCRIPTION The amplifier system is comprised of an MCR20XX Series (NTL107AC) subrack and one or two G3X-800 Series (NTL107AA) plug-in power amplifier modules. The G3H-800 amplifier is a linear, feed-forward power amplifier that operates in the 25 MHz frequency band from 869 to 894 MHz. A typical two module system is shown in figure 4-1. Power output specifications for a one or two module system are listed in table 1-2. Each amplifier is a self-contained plug-in module and is functionally independent of other amplifier modules. The amplifier modules are designed for parallel operation to achieve high peak power output, and for redundancy in unmanned remote locations. The subrack houses a two-way splitter and active power combiner, control assembly, true RMS detector, and back-plane/in-rush current assembly. The rear panel of the subrack has I/O connectors that interface with the host system, RF signal source, system antenna, and the system DC power source. The amplifier system can simultaneously transmit multiple carrier frequencies, at an average total power output of 110 watts (one amplifier module in a subrack unit) to 200 watts (two amplifier modules), with -68 dBc third order intermodulation distortion (IMD). A composite RF signal from the base station radios is applied to the RF input (J9) of the subrack. From there the signal passes through a voltage variable attenuator (VVA), then a two-way splitter. Each leg of the splitter passes through an isolator, then the blind-mate connector to interface with the MCPA. The signal then returns to the subrack via the blind-mate connector after being amplified by the MCPA modules. The two high-power signals are combined by the active power combiner. The active power combiner has the capability of switching MCPA channels off-line by the use of RF switches. If an MCPA is not present, turned off, or faulted, the switch will open in that channel and physically disconnect that MCPA. The combiner maintains its low insertion characteristics when used in the single path configuration. Note that the splitter is not switched, therefore the power is automatically reduced by 3 dB, thus eliminating an output overdrive condition. The output of the combiner is fed through a coupler, then a receive-band filter. The amplified RF signal is available for use at the output of the receive-band filter (J2). The coupler is used to sample the output power to the true RMS detector. The true RMS detector will supply the microcontroller with an accurate average power regardless of the signal modulation type. The Section 4 044-05055 Rev. A4-2 dynamic range is 25 dB. The power reading is used during the gain initialization phase when deploying the system or monitoring to detect excessive output power. In both cases the VVA will be adjusted accordingly. Two non-RF features of the subrack system are inrush current limiting and alarm status/serial interface ports. The inrush current limiting circuitry is used to minimize the instantaneous current demand when the MCPA is first DC powered-up. This is due to the high capacitance on the MCPA’s DC input. The circuit is placed in series on the DC source before the MCPA. Voltage for the subrack is derived prior to the in-rush current limit circuitry. The circuitry is in a high impedance state upon DC power-up. When an MCPA is enabled the impedance is slowly brought down to nearly 0 ohms. This will allow the capacitors to charge over a longer period of time, thus reducing the high current drain on the power supply. The three ports on the rear of the subrack are for Form-C alarms (J1), RS485/Addressing serial communication (J7) and RS485 and RS232 serial communication (J8). The J1, J7, and J8 connectors are detailed in chapter 2 (see figures 2-2, 2-3, and 2-4, and tables 2-2, 2-3, and 2-4). The serial interface allows the user to acquire MCPA internal voltages and status, exercise MCPA and VVA control, upgrade MCPA or subrack firmware, and obtain true RMS power readings. Figure 4-1. MCR20XX Series (NTL107AC) Two Module Amplifier System 4-5. MCR20XX Series (NTL107AC) SUBRACK The MCR20XX Series (NTL107AC) subrack (see block diagram figure 4-1) is not field repairable. The subrack functions are described in section 4-4. RF IN J9VVACOUPLERBPF ALC_LED MOD PORT BDM PORT RF OUT J2 J8 RS485/ADD. RS485/RS232 RMS DET. 500-001090 J5/J6 J3/J4 INTERFACE ASSY. 500-1107 POWER SPLITTER FORM C ALARMS J7 SIGNAL DISTRIBUTION 17 17 ACTIVE POWER COMBINER MCA 1 MCA 2 IN-RUSH IN-RUSH DC_CH1 DC_CH2 SPLITTER & SIGNAL DIST. ASSY. 500-001095 80A MAX 80A MAX DB9 DB9 J1 DB9 2X3 2X3 2 12 4 COMBINER ASSY 500-001094 55 CONTROL ASSEMBLY 500-001105 10030 044-05055 Rev. A4-3 4-6. G3X-800 SERIES (NTL107AA) AMPLIFIER MODULE The amplifier module, figure 4-2, has an average power output of 110 watts with intermodulation products suppressed to better than -65 dBc below carrier levels. The amplifier provides an amplified output signal with constant gain and phase by adding approximately 30 dB of distortion cancellation on …

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044-05055 Rev. A5-1 MAINTENANCE 5-1. INTRODUCTION This section contains periodic maintenance and performance test procedures for the Multicarrier Cellular Amplifier System. 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 o…

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