사용자 설명서차례Table of Contents11List of Figures17List of Tables211 Introduction231.1 Organization of Technical Manual231.2 General Description231.3 Physical Description241.4 Technical Overview261.5 Specifications262 Installation292.1 Introduction292.2 Installing Exciters Removed for Shipment292.3 Signal Connections292.3.1 AC Power302.4 Installation of the GPS 1PPS Signal302.5 Retrofitting Into Existing Transmitter System312.5.1 Feedback Requirements312.5.1.1 Feedback Signal Quality Requirements322.5.2 Typical Transmitter Systems Block Diagrams322.5.3 Atlas Mobile Transmitters332.5.3.1 Atlas Mobile Transmitter - 1 PA Cabinet, 2 Exciters332.5.3.2 Atlas Mobile Transmitter - 2 or More PA Cabinets342.6 Configuring the Exciter352.6.1 Configuration of Setup Screens352.6.2 Configuration of Status Screens372.6.3 Normal Settings for Diagnostic Screens382.7 Materials Needed393 Navigating the LCD Display Screens413.1 Basic Operating Procedure413.1.1 Raising or Lowering Output Power413.1.2 Exciter Fault Display - Red413.1.2.1 Fault Warning - Yellow413.2 Starting Point: The Main LCD Touch Screen423.2.1 Spectrum Response Screen433.2.2 Exciter Status Series of Screens433.2.3 Exciter Setup Series of Screens433.2.4 FLO Measure Soft Key443.3 LCD Display Flow Chart443.4 Details of the Exciter Status Screens483.4.1 System Status Screen483.4.2 Transport Stream Status Screen493.4.3 Adaptive Processing Board Status Screen493.4.3.1 Adaptive Processing Diagnostics513.4.4 Digital Processing Screens523.4.4.1 Modulator Board Status, Screen 1/2523.4.4.2 ADC and DAC Boards Status, Screen 2/2533.4.4.3 FLO FPGA Status, Summary, Screen 1/5543.4.4.4 FLO FPGA, GPS & Clock Status, Screen 2/5553.4.4.5 FLO FPGA, Transport Stream Status, Screen 3/5563.4.4.6 FLO FPGA, SFN FIFO Status, Screen 4/5573.4.4.7 FLO FPGA, MTI Status, Screen 5/5583.4.5 IF & RF Processing Status Screens593.4.5.1 UDC Interface Board Status, Screen 1/4593.4.5.2 PLL Board Status Screen603.4.5.2.1 PLL Diagnostics613.4.5.3 Up Converter Board Status Screen613.4.5.3.1 Up Converter Diagnostics623.4.5.4 Down Converter Board Status Screen633.4.5.4.1 Down Converter Diagnostics643.4.6 System Control Status Screens653.4.6.1 Controller Board Status Screen663.4.6.1.1 Controller Board Diagnostics663.4.6.2 External I/O Board Status Screen673.4.6.2.1 External I/O Diagnostics683.4.6.3 CAN Bus Status Screen703.4.6.3.1 CAN Diagnostics703.4.6.4 Front Panel Board Status Screen703.4.6.5 GPS Status Screen713.5 Built In Tests723.6 Details of the System Setup Screens723.6.1 Restore Defaults Operation733.6.2 Exciter Setup Screen753.6.2.1 Power Calibration783.6.3 RTAC Setup Screen783.6.3.1 Filter Type803.6.3.2 Max Peak Stretch803.6.3.3 RTAC Power On Mode803.6.3.4 RTAC Off Air Mode813.6.4 Display Setup Screen813.6.5 External I/O Setup Screen823.6.5.1 VSWR Foldback Parameters833.6.5.2 RF Present Cutoff833.6.5.3 External I/O Interface to Transmitter Control Logic843.6.6 Serial I/O Setup Screens853.6.6.1 Serial Setup Screen 1 of 3, RS-232853.6.6.2 Serial Setup Screen 2 of 3, Ethernet863.6.6.3 Serial Setup Screen 3 of 3, CAN873.6.7 FPGA Setup883.6.7.1 FPGA Configure 1/5883.6.7.2 FPGA Configure 2/5893.6.7.3 FPGA Configure 3/5903.6.7.4 FPGA Configure 4/5913.6.7.5 FPGA Configure 5/5, Restore Defaults923.6.8 Change Passwords > Security Setup933.6.8.1 User Setup (Locked or Unlocked)943.6.8.2 Diagnostics Setup (Locked or Unlocked)943.6.8.3 Factory Setup (Locked or Unlocked)953.6.9 Restore Defaults953.7 RTAC Operating Procedures, Main Screen.953.7.1 From RTAC Section of Main Screen953.7.2 From Adaptive Precorrection Board Status Screen963.7.3 From Down Converter Board Status Screen963.7.4 From Down Converter Diagnostics Screen963.7.5 From RTAC Setup Screen974 Theory of Operation994.1 General Description994.2 Transmitter Systems Block Diagram994.3 APEX Exciter Digital Assembly Overview1004.3.1 Controller Board Theory1014.3.2 RTAC and Adaptive Precorrector Board Theory1034.3.2.1 44.4 MHz Phase Lock Loop1044.3.3 Exciter Output Spectral Response, RTAC Bypassed1044.4 APEX Exciter Analog Assembly Overview1054.4.1 Up Converter Board Block Diagram Description1064.4.1.1 Up Converter Board UHF/VHF Band Pass Filter1064.4.2 Down Converter Board Block Diagram Description1074.4.3 PLL Board - A41084.4.3.1 10 MHz Reference1084.4.3.2 128.9 MHz IF PLL (First L. O.)1094.4.3.3 Main Phase Lock Loop (Second LO)1104.4.4 Output Amplifier1114.5 DC Power Distribution1124.5.1 Main Power Supply1124.5.2 Digital Deck Power1124.5.2.1 Controller Board Power1124.5.2.2 FPGA Modulator Board Power1134.5.2.3 Adaptive Processing Board Power1134.5.2.4 Power for DAC and ADC Boards1134.5.2.5 External I/O Board Power1144.5.2.6 Front Panel Board1144.5.3 Analog Deck Power1144.5.3.1 UDC Interface Board Power1144.5.3.2 Exciter Cooling Fan Power1144.5.3.3 Down Converter Board Power1154.5.3.4 PLL Board Power1154.5.3.5 Up Converter Board Power1164.5.3.6 Output Amplifier1165 Maintenance and Troubleshooting1175.1 Exciter Maintenance1175.1.1 Cleaning1175.1.2 Measuring PLL Board Frequencies1225.1.2.1 Measuring Center Channel Frequency1225.1.2.2 PLL Board 10 MHz Reference Oscillator Frequency1245.1.2.3 Measuring the 1st Local Oscillator Frequency1245.1.2.4 Measuring the 2nd Local Oscillator Frequency1245.2 Loading Software1255.3 Default Settings For DIagnostics Screens1265.4 Typical Settings for the More Critical Exciter Setups1275.5 Exciter Troubleshooting Flow Charts1285.6 General Troubleshooting1325.6.1 Troubleshooting Tips1325.7 System Troubleshooting1335.7.1 PA, HPF, or ADC Adaptive Processing Faults1335.7.2 Transmitter Response Not Conforming to Mask Requirements1335.7.3 Checking Transmitter Spectrum1345.7.4 ASI Transport Stream Faults1345.8 Exciter Troubleshooting1355.8.1 Frequency Error1355.8.2 Dark Screen1355.8.3 Power Supply Voltages1365.8.4 Troubleshooting Down to the Board Level1375.8.4.1 Digital Tray Transmission Data Path1375.8.4.2 Analog Tray Signal Path1375.8.5 Isolating Problem to the Analog or Digital Tray1375.8.5.1 Checking Operation of the Entire Digital Tray1375.8.5.2 Checking Operation of the Entire Exciter1385.8.6 Isolating a Faulty Board in the Digital Tray1395.8.6.1 Modulator Board1395.8.6.2 Adaptive Precorrector Board1405.8.6.3 ADC and DAC Boards1405.8.6.4 Front Panel Board1405.8.6.5 Controller Board1405.8.7 Analog Tray Troubleshooting1416 Parts List143Appendix A Exciter GUI Screen Captures145크기: 2.1메가바이트페이지: 148Language: English매뉴얼 열기