Powerwave Technologies 5JS0042 Linear Feed-Forward Power Amplifier User Manual Part 4

Powerwave Technologies Inc Linear Feed-Forward Power Amplifier Part 4

User Manual Part 4

044-05055 Rev. A 2-1INSTALLATION2-1. INTRODUCTIONThis section contains installation recommendations, unpacking, inspection, and installationinstructions for the Multicarrier Cellular Amplifier System. Carefully read all material in this sectionprior to equipment unpacking or installation. Also read and review the operating procedures inSection 3 prior to installing the equipment. Section 3 contains applicable standards imposed bythe Federal Communications Commission. It is important that the licensee perform these taskscorrectly and in good faith. Carefully read Parts 73 and 74 of the FCC rules to determine howthey apply to your installation. DON'T TAKE CHANCES WITH YOUR LICENSE.2-2. ELECTRICAL SERVICE RECOMMENDATIONSPowerwave Technologies recommends that proper AC line conditioning and surge suppressionbe provided on the primary AC input to the +27 Vdc power source. All electrical service should beinstalled in accordance with the National Electrical Code, any applicable state or local codes, andgood engineering practice. Special consideration should be given to lightning protection of allsystems in view of the vulnerability of most transmitter sites to lightning. Lightning arrestors arerecommended in the service entrance. Straight, short ground runs are recommended. Theelectrical service must be well grounded.Each amplifier system should have its own circuit breaker, so a failure in one does not shut off thewhole installation. Circuit breakers should be thermal type, capable of handling the anticipatedinrush current, in a load center with a master switch.2-3. UNPACKING AND INSPECTIONThis equipment has been operated, tested, and calibrated at the factory. Only in the event ofsevere shocks or other mistreatment should any substantial readjustment be required. Carefullyopen the containers and remove the subrack and amplifier modules. Retain all packing materialthat can be reassembled in the event that the unit must be returned to the factory.CAUTIONExercise care in handling equipmentduring inspection to prevent damagecaused by rough or careless handling.Visually inspect the amplifier subrack and modules for damage that may have occurred duringshipment. Check for evidence of water damage, bent or warped chassis, loose screws or nuts, orextraneous 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 anydamage is assessed. We cannot stress too strongly the importance of IMMEDIATE carefulinspection of the equipment and the subsequent IMMEDIATE filing of the necessary claimsagainst the carrier if necessary. If possible, inspect the equipment in the presence of the deliveryperson. If the equipment is damaged, the carrier is your first area of recourse. If the equipment isdamaged 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 maynot be withheld from any payment to Powerwave, nor may any payment due be withheld pendingthe outcome thereof. WE CANNOT GUARANTEE THE FREIGHT CARRIER'S PERFORMANCE.Section2
044-05055 Rev. A 2-22-4. INSTALLATION INSTRUCTIONSThe MCR20XX Series (NTL107AC) 23-inch subrack, which holds two amplifier modules, isdesigned for installation in a rack or cabinet that permits access to the rear of the amplifier systemfor connection of DC power, RF, and control and monitor cables. The location and function of thesystem interface connectors are shown in figures 2-1, 2-2, 2-3, and 2-4, and are described intables 2-1, 2-2, 2-3, and 2-4. The plug-in amplifier module connectors are shown in figures 2-5and 2-6, and are described in tables 2-5 and 2-6.Table 2-1. MCR20XX Series Subrack Power, Monitor, Control, and Input/Output ConnectorsNO. NAME FUNCTIONJ1 SYSTEM ALARM Connector 9-Pin female D-Sub connector. Form C alarms. Referto figure 2-2 and table 2-2 for individual pin signals.J2 RRFF OOUUTT CCoonnnneeccttoorr Type N female coax connector. Output to antenna.Refer to table 1-2 for power output level of one or twoamplifier module systems.J3 +27V Connector Two ¼-20 Studs, +27 Vdc power input, MCPA #1J4 RTN connector Two ¼-20 Studs, power return, MCPA #1J5 +27V Connector Two ¼-20 Studs, +27 Vdc power input, MCPA #2J6 RTN Two ¼-20 Studs, power return, MCPA #2J7 RS485 Connector 9-Pin female D-Sub connector. RS-485/Addressingserial communication. Refer to figure 2-3 and table2-3 for individual pin signals.J8 MICRO-PROCESSORINTERFACE Connector 9-Pin female D-Sub connector. RS-485 and RS-232serial communication. Refer to figure 2-4 and table2-4 for individual pin signals.J9 RF INPUT Connector SMA female coax connector. Refer to table 1-2 forpower 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.WARNINGTurn off external primary DC power beforeconnecting DC power cables.4. Remove protective cover over power terminal studs; do not discard. Connect positive primarypower 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 allconnections.WARNINGReplace protective cover over power terminal studs.Failure to replace cover properly could result inpersonal injury and damage to equipment in theevent of a short circuit.5. Connect transceiver or exciter output to J9 RF IN SMA-type connector on the rear of thesubrack.
044-05055 Rev. A 2-3
044-05055 Rev. A 2-46. As required by the specific facility, one or more of the following cables should be connected:• Connect alarms monitor cable to J1 SYSTEM ALARM connector on rear of subrack (referto figure 2-2 and table 2-2 for J1 SYSTEM ALARM connector definition).• Connect RS-485 control cable to J7 RS-485 connector on rear of subrack (refer to figure2-3 and table 2-3 for J7 RS-485 connector definition).• Connect computer interface cable to J8 MICRO-PROCESSOR INTERFACE connectoron rear of subrack (refer to figure 2-4 and table 2-4 for J8 MICRO-PROCESSORINTERFACE definition).CAUTIONVerify that the power circuit breaker switches on thefront panels of the amplifiers are in the right (OFF)position, and that the RF ON switches are in thedown (Off) position.7. Install the plug-in amplifier modules in the slots of the subrack. 8. Check your work before applying DC voltage to the system. Make certain all connections aretight and correct. 9. Measure primary DC input voltage at the power distribution panel. DC input voltage should be+27 Vdc ±1.0 Vdc. 10. Refer to section 3 for initial turn-on and checkout procedures.
044-05055 Rev. A 2-52-5. J1 SYSTEM ALARM CONNECTORThe J1 SYSTEM ALARM connector on the rear of the MCR20XX Series (NTL107AC) subrack isa 9-pin female D-sub connector that permits monitoring various alarm signals for each amplifier inthe subrack. Refer to figure 2-2 and table 2-2 for connector definition.Figure 2-2. J1 SYSTEM ALARM ConnectorTable 2-2. J1 SYSTEM ALARM Connector DefinitionPIN ALARM INDICATION DESCRIPTION1 Critical (MCPA 1 shuts down) Under normal operation, pulled up to the 27-volt linethrough a 1000-ohm resistor. Opens when both fansfail or when the following alarms trigger for module #1:Over Pwr, High Temp, VSWR, DC Fail, Loop Fail, orLow Pwr.2 Critical (MCPA 2 shuts down) Under normal operation, pulled up to the 27-volt linethrough a 1000-ohm resistor. Opens when both fansfail or when the following alarms trigger for module #2:Over Pwr, High Temp, VSWR, DC Fail, Loop Fail, orLow Pwr.3 Major 1 (any one of 4 fan fail onMCPA #1) Under normal operation, pulled up to the 27-volt linethrough a 1000-ohm resistor.4 Major 2 (any one of 4 fan fail onMCPA #2) Under normal operation, pulled up to the 27-volt linethrough a 1000-ohm resistor.5 Enable (Complete MCPA systemshuts down) Pulled to 27 volts through 630 ohms if one or moremodules are active. If no modules are active, thenpulled to ground through 1000 ohms.6 APC Under normal operation, pulled up to the 27-volt linethrough a 1000-ohm resistor.7 No Connection8 No Connection9 Common Ground
044-05055 Rev. A 2-62-6. J7 RS485 CONNECTORThe J7 RS485 connector on the rear of the MCR20XX Series (NTL107AC) subrack is a 9-pinfemale D-sub connector that permits serial interface with the MCPA system. Refer to figure 2-3and table 2-3 for connector definition.Figure 2-3. J7 RS485 ConnectorTable 2-3. J7 RS485 Connector DefinitionPIN DESCRIPTION1 RS-485 Rx+2 Addr 03 Addr 14 RS-485 Rx–5 Ground6 RS-485 Tx–7 RS-485 Tx+8 Addr 29 Addr 3
044-05055 Rev. A 2-72-7. J8 MICRO-PROCESSOR INTERFACE CONNECTORThe J8 MICRO-PROCESSOR INTERFACE connector on the rear of the MCR20XX Series(NTL107AC) subrack is a 9-pin female D-sub connector that permits serial interface with theMCPA system. Refer to figure 2-4 and table 2-4 for connector definition. J8 will be used for theinitialization process of this system.Figure 2-4. J8 MICRO-PROCESSOR INTERFACE ConnectorTable 2-4. J8 MICRO-PROCESSOR INTERFACE Connector DefinitionPIN DESCRIPTION1 RS-485 Rx+2 RS-232 Rx3 RS-232 Tx4 RS-485 Rx–5 Ground6 RS-485 Tx–7 RS-485 Tx+8 Select9 Ground
044-05055 Rev. A 2-82-8. AMPLIFIER MODULE STATUS, ALARM, CONTROL, AND POWER CONNECTOREach amplifier in the subrack has a separate remote alarm and control connector which may beused by the host system to monitor and control the individual amplifier modules. The status,alarm, control, and power connections on the amplifier connector are made through a 21-pin maleD-Sub combo connector (figure 2-5) and are listed and described in table 2-5.Figure 2-5. DC and Logic Connector [on Rear of G3X-800 Series (NTL107AA) Amplifier Module]Table 2-5. Amplifier Module DC and Logic Connector DefinitionPIN FUNCTION DESCRIPTIONA1 Power Input +27 Vdc (Power Contact)A2 Power Input +27 Vdc (Power Contact)A3 Ground Ground (Power Contact)A4 Ground Ground (Power Contact)1 RS485 +TxD Serial Communication Data Out2 RS485 +RxD Serial Communication Data In3 Service Loop TTL input to Amp. Gnd. for special test mode (Note 1)4 MCPA Disabled(Summary Fault) TTL signal normally low indicates MCPA enabled. A high levelindicates that the MCPA has been disabled. Over Power, OverVoltage takes one second to activate the signal.5 Mod Addr 0 TTL input to Amp. Gnd. supplied by shelf to identify slot.6 Mod Addr 1 TTL input to Amp. Gnd. supplied by shelf to identify slot.7 TP1 TTL output. Future test point.8 Manual Download GND to download manually9 DC on stat TTL output. High indicates Amp is powered on.10 RS485 –TxD Serial Communication Data Out11 RS485 –RxD Serial Communication Data In12 SCL7 No connection13 SDA7 No connection14 FP Disable Output Output, GND if the front panel switch is in the OFF position; +5 voltsindicates the front panel switch is in the ON position.15 FP RST Output, GND if the front panel switch is in the RESET position; +5 voltsotherwise.16 GND Ground17 Module Detect Ground potential. Informs the subrack that an MCPA is plugged in.Note 1: Service loop grounded allows the MCPA to be enabled or disabled by the front panelswitch when not mounted in the shelf.
044-05055 Rev. A 2-92-9. AMPLIFIER MODULE RF CONNECTOREach amplifier in the subrack has a separate RF connector which is used for RF signal input andoutput. The RF connections on the amplifier connector are made through a 2-pin female D-Subcombo connector (figure 2-6) and are listed and described in table 2-6.Figure 2-6. Amplifier RF ConnectorTable 2-6. Amplifier RF Connector DefinitionPIN FUNCTION DESCRIPTIONA1 RF Input Coaxial ContactA2 RF Output Coaxial Contact

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