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Summary of Contents for PowerWave NTGY81AC
- Page 1 INSTALLATION & SERVICE MANUAL MULTICHANNEL POWER AMPLIFIER NTGY81AC 1930-1990 MHz 50 WATTS AVERAGE POWER 04 April 2002 Powerwave Technologies, Inc. Tel: (714) 466-1000 1801 E. St. Andrew Place Fax: (714) 466-5800 Santa Ana, CA 92705 Web Site: www.powerwave.com 044-xxxxx Rev. x...
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Page 2: Table Of Contents
TABLE OF CONTENTS Par. Section 1 Page General Description Introduction........................1-1 General Description....................... 1-1 Functional and Physical Specifications................1-1 Section 2 Installation Introduction........................2-1 Electrical Service Recommendations ................2-1 Unpacking and Inspection ....................2-1 Installation Instructions ....................2-2 +26 VDC Power and Ground Connector P1..............2-2 Alarms and Sensing Connector P2 ................ - Page 3 Differential IIC Clock, Receive, and Transmit Connector P3.......... 2-4 IIC, Power, Alarms, and Controls Connector P4 ............2-4 IIC, RS485, Power and Other Connector P5..............2-6 NTGY81AC Multichannel Power Amplifier Functional Block Diagram ......4-2 NTGY81AC Amplifier Test Setup Diagram ..............5-3 LIST OF TABLES...
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Page 4: General Description No
Section 6: Troubleshooting 1-2. GENERAL DESCRIPTION The NTGY81AC is a linear, multichannel power amplifier that operates in the 60 MHz frequency band from 1930 MHz to 1990 MHz. It is designed to be mounted in an enclosure with EMI containment. Its flat base plate allows for mounting on a flat thermal-absorbing surface to provide adequate heat dissipation. -
Page 5: Ntgy81Ac Multichannel Power Amplifier
Table 1-1. NTGY81AC Multichannel Power Amplifier Functional Specifications Frequency Range 1930-1990 MHz (60 MHz Bandwidth) Maximum Average Input Power 13 dBm Continuous Average Output Power 50 Watts Spurious Emissions @ Maximum Frequency Offset Requirement Meas. Bandwidth Rated Output Power Max. -
Page 6: Ntgy81Ac Multichannel Power Amplifier
RF OUT RF IN Figure 1-1. NTGY81AC Multichannel Power Amplifier 044-xxxxx Rev. x... -
Page 7: Installation
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 044-xxxxx Rev. -
Page 8: Installation Instructions
2-4. INSTALLATION INSTRUCTIONS (Refer to figure 1-1) The NTGY81AC amplifier module is designed for installation on a heatsink that permits access to the module for connection of RF cables and the power, alarm, and control connector. To install the amplifier proceed as follows: 1. -
Page 9: Alarms And Sensing Connector P2
2-6. ALARMS AND SENSING CONNECTOR P2 The alarms and sensing connections on the amplifier are made through a 14-pin micro-fit connector (figure 2-2) and are listed and described in table 2-2. Figure 2-2. Alarms and Sensing Connector P2 Table 2-2. Alarms and Sensing Connector P2 Definition SIGNAL DESCRIPTION 5-volt supply for the AIM;... -
Page 10: Differential Iic Clock, Receive, And Transmit Connector P3
2-7. DIFFERENTIAL IIC CLOCK, RECEIVE, AND TRANSMIT CONNECTOR P3 The alarms and sensing connections on the amplifier are made through a 6-pin micro-fit connector (figure 2-3) and are listed and described in table 2-3. Figure 2-3. Differential IIC Clock, Receive, and Transmit Connector P3 Table 2-3. - Page 11 Table 2-4. IIC, Power, Alarms, and Controls Connector P4 Definition SIGNAL DESCRIPTION 26V supply to the fans; routed from 12-position HPCA +26_FAN connector 26V supply returnto the fans; routed from 12-position +26_FAN_RTN HPCA connector Alarm for one of three fans in fan assembly / AIM. FAN_ALARM1 Generated by the fan assembly / AIM and sent to the MFRM via the MCPA’s RS485 link.
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Page 12: Iic, Rs485, Power, And Other Signals Connector P5
2-9. IIC, RS485, POWER, AND OTHER SIGNALS CONNECTOR P5 The alarms and sensing connections on the amplifier are made through a 18-pin micro-fit connector (figure 2-5) and are listed and described in table 2-5. Figure 2-5. IIC, RS485, Power, and Other Signals Connector P5 Table 2-5. -
Page 13: Operating Instructions
This section contains operating instructions for the Multicarrier Cellular Amplifier. 3-2. INITIAL START-UP AND OPERATING PROCEDURES There are no operating controls or indicators on the NTGY81AC amplifier module. To perform the initial start-up, proceed as follows: 1. Double check to ensure that all input and output cables are properly connected. -
Page 14: Principles Of Operation
4-4. AMPLIFIER FUNCTIONAL DESCRIPTION The NTGY81AC amplifier (figures 1-1 and 4-1) is a linear, multichannel power amplifier that operates in the 60 MHz frequency band from 1930 MHz to 1990 MHz at an output power of 50 watts. -
Page 15: 4-4.3 Driver Amplifier
AMPLIFIER MULTIFUNCTION BOARD (ALARMS AND LOOP CONTROLS) Figure 4-1. NTGY81AC Multichannel Power Amplifier Functional Block Diagram 4-5. AMPLIFIER MODULE COOLING Each amplifier module is contained within a thermally conductive chassis which, when properly mounted on an adequate thermal surface, will provide sufficient cooling to maintain the amplifier within the specified operating temperature range. -
Page 16: Maintenance No
Section MAINTENANCE 5-1. INTRODUCTION This section contains periodic maintenance and performance test procedures for the multichannel power 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. -
Page 17: Performance Test
437B / 8481A Network Analyzer H.P. 8753D Current Probe Source Diskette Powerwave Driver PA (1930-1990 MHz) 12 dB gain, P = 29 dBm (min) 5-4. PERFORMANCE TEST Performance testing should be conducted every 12 months to ensure that the amplifier system meets the operational specifications listed in table 5-3. -
Page 18: Ntgy81Ac Amplifier Test Setup Diagram
Figure 5-1. NTGY81AC Amplifier Test Setup Diagram 044-xxxxx Rev. x... -
Page 19: Multichannel Power Amplifier Ntgy81Ac Test Data Sheet
Table 5-3. Multichannel Power Amplifier NTGY81AC Test Data Sheet Tested By: ___________________ Serial No: ________________ Pass/Fail: ____________________ Date: ____________________ 50W MCPA Test Test Conditions: Load and source impedance: 50 ohms, VSWR < 1.2:1 Supply voltage: +26 Vdc ± ± ± ± 0.4 Vdc (unless otherwise noted). -
Page 20: Field Replacement Of The Module
5-5. FIELD REPLACEMENT OF THE MODULE The NTGY81AC multichannel power amplifier module can be replaced in the field on site by a qualified technician with adequate ESD protection and experience maintaining RF power amplifiers and similar equipment. To replace a power amplifier module, proceed as follows: Turn off 26 Vdc power to that specific module. -
Page 21: Troubleshooting
This section contains a list of problems which users have encountered 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.
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