UBS Axcera LU100AT 100-Watt UHF Transmitter User Manual 377402

UBS-Axcera 100-Watt UHF Transmitter 377402

Table of Contents

UHF Analog Driver/Transmitter   Table of Contents  LX Series, Rev. 0    October 31, 2003 iTABLE OF CONTENTS      SECTION   PAGE   CHAPTER 1  INTRODUCTION   1.1 Manual Overview................................................................................. 1-1   1.2 Assembly Designation Numbers ............................................................ 1-1  1.3 Safety................................................................................................ 1-1  1.4 Maintenance ....................................................................................... 1-2   1.5 Material Return Procedure .................................................................... 1-2   1.6 Limited One-Year Warranty for Axcera Products ...................................... 1-3    CHAPTER 2  SYSTEM DESCRIPTION & REMOTE CONTROL CONNECTIONS    2.1  System Overview ............................................................................... 2-1     2.1.1 Modulator Module (not used in a translator system) ........................ 2-1     2.1.2 IF Processor Module.................................................................... 2-3   2.1.3 LO/Upconverter Module............................................................... 2-5     2.1.4 Control & Monitoring/Power Supply Module.................................... 2-7     2.1.5 Power Amplifier Module, 10-100W transmitter................................ 2-8       2.1.5.1 Driver Amplifier Module, used with high power transmitters .... 2-9     2.1.6 RF Output Assemblies ................................................................2-11  2.2 Control and Status..............................................................................2-11     2.2.1 Front Panel LCD Display Screen...................................................2-11  2.3 System Operation...............................................................................2-12   2.3.1 Principles of Operation ...............................................................2-12  2.4 Customer Remote Connections.............................................................2-14      CHAPTER 3  SITE CONSIDERATIONS, INSTALLATION AND SETUP PROCEDURES     3.1 Site Considerations.............................................................................. 3-1   3.2 Unpacking the Chassis w/Modules, bandpass and trap filters..................... 3-4   3.3 Installing the Chassis w/Modules and filters ............................................ 3-4   3.4 AC Input ............................................................................................ 3-5  3.5 Setup and Operation............................................................................ 3-5   3.5.1 Input Connections ...................................................................... 3-5     3.5.2 Front Panel Screens for the Exciter/Amplifier Chassis Assembly ........ 3-7   3.5.3 Initial Turn On ..........................................................................3-14    CHAPTER 4  CIRCUIT DESCRIPTIONS    4.1 Modulator Module (not used in a translator system)................................. 4-1     4.1.1 Analog Modulator Board .............................................................. 4-1   4.2 IF Processor Module............................................................................. 4-6     4.2.1 IF Processor Board ..................................................................... 4-6  4.3 LO/Upconverter Module.......................................................................4-11     4.3.1 UHF Generator Board.................................................................4-12   4.3.2 UHF Filters................................................................................4-13   4.3.3 LO/Upconverter Board ...............................................................4-13   4.4 Control Monitoring/Power Supply Module...............................................4-17     4.4.1 Power Protection Board ..............................................................4-17     4.4.2 Control Board ...........................................................................4-18   4.4.3 Switch Board ............................................................................4-20     4.4.4 Switching Power Supply Assembly ...............................................4-20
UHF Analog Driver/Transmitter   Table of Contents  LX Series, Rev. 0    October 31, 2003 iiTABLE OF CONTENTS - (Continued)              SECTION PAGE   4.5 Power Amplifier Module Assembly used in 10-100 Watt transmitters .........4-21     4.5.1 1-Watt Amplifier Module Assembly...............................................4-21     4.5.2 1-Watt UHF Amplifier Board ........................................................4-21     4.5.3 40-Watt UHF Amplifier Assembly .................................................4-21     4.5.4 UHF Module Assembly, RF Module Pallet .......................................4-22   4.5.5 Coupler Board Assembly.............................................................4-23   4.5.6 Amplifier Control Board ..............................................................4-23     4.5.7 Band-pass and Trap Filter...........................................................4-25    4.6 OR Driver Amplifier Module Assembly used in high power transmitters ......4-25     4.6.1 1-Watt Amplifier Module Assembly...............................................4-25     4.6.2 1-Watt UHF Amplifier Board ........................................................4-26     4.6.3 40-Watt UHF Amplifier Assembly .................................................4-26   4.6.4 Coupler Board Assembly.............................................................4-26   4.6.5 Amplifier Control Board ..............................................................4-27    CHAPTER 5  DETAILED ALIGNMENT PROCEDURES   5.1 Module Replacement............................................................................ 5-1   5.1.1 Initial Test Setup........................................................................ 5-1   5.2 LU Series Exciter/Amplifier Chassis Assembly.......................................... 5-2     5.2.1 Linearity Correction Adjustment ................................................... 5-3     5.2.2 Frequency Response Delay Equalization Adjustment ....................... 5-4     5.2.3 Calibration of Output Power and Reflected Power............................ 5-4   5.3 Alignment Procedure for the Bandpass Filter Assembly ............................. 5-5  APPENDICES    APPENDIX A  LX SERIES SPECIFICATIONS    APPENDIX B  DRAWINGS AND PARTS LISTS
UHF Analog Driver/Transmitter   Table of Contents  LX Series, Rev. 0  iiiLIST OF FIGURES          FIGURE   PAGE    3-1    1 kW Minimum Ventilation Configuration ......................................... 3-4   3-2    Front and Rear View Reconnection Drawing ..................................... 3-5   3-3    Rear View of LX Series Digital Transmitter ....................................... 3-6    4-1    40-Watt UHF Amplifier Module ......................................................4-22  4-2  UHF Amplifier Module, 250 Watts ..................................................4-23   4-3    40-Watt UHF Amplifier Module ......................................................4-27    5-1    Typical Red Field Spectrum............................................................ 5-4
UHF Analog Driver/Transmitter   Table of Contents  LX Series, Rev. 0  ivLIST OF TABLES         TABLE   PAGE   2-1    10-100W Analog LX Series Assemblies and Tray............................... 2-1   2-2    Modulator Front Panel Switch......................................................... 2-2   2-3    Modulator Front Panel Status Indicators .......................................... 2-2   2-4    Modulator Front Panel Control Adjustments...................................... 2-2   2-5    Modulator Front Panel Sample........................................................ 2-3   2-6    IF Processor Front Panel Switch...................................................... 2-4   2-7    IF Processor Front Panel Status Indicators ....................................... 2-4   2-8    IF Processor Front Panel Control Adjustments .................................. 2-4   2-9    IF Processor Front Panel Sample .................................................... 2-5   2-10  LO/Upconverter Front Panel Switch................................................. 2-6   2-11  LO/Upconverter Front Panel Status Indicators .................................. 2-6   2-12  LO/Upconverter Front Panel Control Adjustments ............................. 2-6  2-13 LO/Upconverter Front Panel Samples .............................................. 2-7   2-14  Controller/Power Supply Front Panel Display .................................... 2-7   2-15  Controller/Power Supply Front Panel Status Indicators ...................... 2-7   2-16  Controller/Power Supply Front Panel Control Adjustments.................. 2-7   2-17  Power Amplifier Front Panel Status Indicators .................................. 2-9   2-18  Power Amplifier Front Panel Control Adjustments.............................. 2-9  2-19 Power Amplifier Front Panel Sample................................................ 2-9   2-20  Driver Amplifier Front Panel Status Indicators .................................2-11   2-21  Driver Amplifier Front Panel Control Adjustments.............................2-11  2-22 Driver Amplifier Front Panel Sample...............................................2-11   2-23  UHF Television Frequencies...........................................................2-13  2-24  LX Series Chassis Customer Remote Connections ............................2-14    3-1    Rear Chassis Connections for LX Series Analog Transmitters .............. 3-6   3-2    Menu 01 Splash Screen #1 ............................................................ 3-7   3-3    Menu 02 Splash Screen #2 ............................................................ 3-7   3-4    Menu 10 Main Screen.................................................................... 3-7   3-5    Menu 11 Error List Screen ............................................................. 3-8   3-6    Menu 12 Transmitter Device Data Access Screen.............................. 3-8   3-7    Menu 13 Transmitter Configuration Access Screen ............................ 3-8   3-8    Menu 20 Error List Display Screen .................................................. 3-8   3-9    Menu 30 Transmitter Device Details Screen ..................................... 3-9  3-10 Menu 30-1 System Details Screens................................................. 3-9  3-11 Transmitter Device Parameters Detail Screens ................................. 3-9   3-12  Menu 40 Transmitter Set Up: Power Raise/Lower Screen ..................3-10   3-13  Menu 40-1 Transmitter Set Up: Model Select Screen........................3-10   3-14  Menu 40-2 Transmitter Set Up: Frequency Select Screen .................3-11   3-15  Menu 40-3 Transmitter Set Up: Frequency Table Select Screen .........3-11   3-16  Menu 40-4 Transmitter Set Up: IF Frequency Screen .......................3-11   3-17  Menu 40-5 Transmitter Set Up: Custom Frequency Select Screen......3-11   3-18  Menu 40-6 Transmitter Set Up: Xmtr. Set Up Serial Address Screen ..3-12   3-19  Menu 40-7 Transmitter Set Up: Station ID Screen ...........................3-12   3-20  Menu 40-8 Transmitter Set Up: System Visual Power Cal. Screen ......3-12   3-21  Menu 40-9 Transmitter Set Up: System Aural Power Cal. Screen .......3-12   3-22  Menu 40-10 Transmitter Set Up: System Rfltd. Power Cal. Screen .....3-13   3-23  Menu 40-11 Transmitter Set Up: Fwrd Pwr Fault Threshold Screen ....3-13   3-24  Menu 40-12 Transmitter Set Up: Refl Power Fault Threshold Screen ..3-13   3-25  Menu 40-13 Transmitter Set Up: Remote Commands Control Screen .3-13

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