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Axcera LU5ATD Instruction Manual

Innovator lx series, digital power amplifier assembly
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INSTRUCTION MANUAL
Innovator
LX Series
Digital Power Amplifier
Assembly
AXCERA, LLC
103 FREEDOM DRIVE P.O. BOX 525 LAWRENCE, PA 15055-0525 USA
(724) 873-8100 • FAX (724) 873-8105
www.axcera.com • info@axcera.com

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  • Page 1 INSTRUCTION MANUAL Innovator LX Series Digital Power Amplifier Assembly AXCERA, LLC 103 FREEDOM DRIVE P.O. BOX 525 LAWRENCE, PA 15055-0525 USA (724) 873-8100 • FAX (724) 873-8105 www.axcera.com • info@axcera.com...

  • Page 2: Table Of Contents

    1.3 Safety ....................1-2 1.4 Contact Information ................. 1-2 1.5 Material Return Procedure ..............1-2 1.6 Limited One Year Warranty for Axcera Products ........1-3 CHAPTER 2 AMPLIFIER ASSEMBLY DESCRIPTION, MAINTENANCE & REMOTE CONTROL CONNECTIONS 2.1 LX Series Power Amplifier Chassis Assembly Overview ......2-1 2.1.1 Power Amplifier Chassis Configurations...........2-3...

  • Page 3: Section Page

    LX Series Digital Table of Contents Power Amplifier Assembly TABLE OF CONTENTS - (Continued) SECTION PAGE CHAPTER 4 CIRCUIT DESCRIPTIONS Power Amplifier Chassis Assembly ............4-1 4.1 Power Amplifier Module................4-1 4.1.1 UHF Phase/Gain Board ..............4-1 4.1.2 150 Watt Driver Pallet Assembly ............4-2 4.1.3 150 Watt Driver, Dual Output Board..........4-2 4.1.4 UHF Module Assembly, RF Module Pallet, Philips ......4-2 4.1.5 2 Way UHF Combiner Assembly .............4-3...
  • Page 4 LX Series Digital Table of Contents Power Amplifier Assembly LIST OF FIGURES FIGURE PAGE Brady Marker Identification Drawing..........1-1 500W Digital Power Amplifier Assembly Racking Plan ......2-3 1 kW Minimum Ventilation Configuration...........3-4 Front and Rear View Exciter/Driver...........3-5 Front and Rear View 76” Cabinet Typical 2kW Configuration ....3-6 AC Input Box Assembly..............3-6 Rear View of LX Series Transmitter ..........3-7 125 Watt Digital UHF Amplifier Module ..........4-2...
  • Page 5 LX Series Digital Table of Contents Power Amplifier Assembly LIST OF TABLES TABLE PAGE Typical LX Series Digital System Drawings and Parts Lists ....2-4 LX Series Power Amplifier Chassis Assemblies ........2-8 Power Amplifier Status Indicators.............2-9 Power Amplifier Control Adjustments..........2-9 Power Amplifier Sample ..............2-9 LX Series Customer Remote Connections.........

  • Page 6: Manual Overview

    Chapter 1 Introduction 1.1 Manual Overview 1.2 Assembly Designators This manual explains the installation, Axcera has assigned assembly numbers, setup, alignment, and maintenance Ax designations such as A1, where procedures for the Power Amplifier x=1,2,3…etc, to all assemblies, modules, Assembly for the Innovator LX Series and boards in the system.

  • Page 7: Safety

    Axcera technician with transmitter site for future reference. answers to the following questions. This Axcera provides two sets of manuals for will save time and help ensure the most this purpose; one set can be left at the direct resolution to the problem.

  • Page 8: Limited One Year Warranty For Axcera Products

    The RMA# is intended to be used when warranty, (b) the defective product is the unit is returned to Axcera. In properly packed and returned by the addition, all shipping material should be...
  • Page 9 LX Series Digital Chapter 1, Introduction Power Amplifier Assembly ! ! ! ! WARNING!!! " " " " HIGH VOLTAGE # # # # DO NOT ATTEMPT TO REPAIR OR TROUBLESHOOT THIS EQUIPMENT UNLESS FAMILIAR WITH OPERATION EXPERIENCED SERVICING HIGH VOLTAGE EQUIPMENT. LETHAL VOLTAGES ARE PRESENT WHEN POWER IS APPLIED TO THIS SYSTEM.
  • Page 10 LX Series Digital Chapter 1, Introduction Power Amplifier Assembly EMERGENCY FIRST AID INSTRUCTIONS Personnel engaged in the installation, operation, or maintenance of this equipment are urged to become familiar with the following rules both in theory and practice. It is the duty of all operating personnel to be prepared to give adequate Emergency First Aid and thereby prevent avoidable loss of life.
  • Page 11 LX Series Digital Chapter 1, Introduction Power Amplifier Assembly dBm, dBw, dBmV, dBµ µ µ µ V, & VOLTAGE EXPRESSED IN WATTS 50 Ohm System WATTS PREFIX dBmV dBµV VOLTAGE 1,000,000,000,000 1 TERAWATT +150 +120 100,000,000,000 100 GIGAWATTS +140 +110 10,000,000,000 10 GIGAWATTS +130...
  • Page 12 LX Series Digital Chapter 1, Introduction Power Amplifier Assembly USEFUL CONVERSION FACTORS TO CONVERT FROM MULTIPLY BY mile (US statute) kilometer (km) 1.609347 inch (in) millimeter (mm) 25.4 inch (in) centimeter (cm) 2.54 inch (in) meter (m) 0.0254 foot (ft) meter (m) 0.3048 yard (yd)
  • Page 13 LX Series Digital Chapter 1, Introduction Power Amplifier Assembly RETURN LOSS VS. VSWR 1.001 1.01 VSWR Volume 2, Rev. 1...
  • Page 14 LX Series Digital Chapter 1, Introduction Power Amplifier Assembly ABBREVIATIONS/ACRONYMS Alternating Current Light emitting diode Automatic Frequency Control Lower Sideband Automatic Level Control MPEG Motion Pictures Expert Group Amplitude modulation Output Automatic Gain Control Phase Locked Loop American wire gauge Printed circuit board Bit Error Rate Quadrature Amplitude Modulation...

  • Page 15: Chapter 2 Amplifier Assembly Description, Maintenance & Remote Control Connections

    LX Series Digital Chapter 2, Amplifier Assembly Description, Power Amplifier Assembly Maintenance & Remote Control Connections Chapter 2 Amplifier Assembly Description, Maintenance & Remote Control Connections 2.1 LX Series Power Amplifier Chassis Assembly Overview In a 1.5 kW digital system the RF output of the exciter/driver connects to (A5) a 4 The power amplifier chassis assembly in Way Splitter Assembly.
  • Page 16 LX Series Digital Chapter 2, Amplifier Assembly Description, Power Amplifier Assembly Maintenance & Remote Control Connections connects to the (A2) cabinet at J3 of (A2- In a 1.5 kW digital system, the system A5) a 4 way splitter. Three of the outputs serial cable connects from J34 on the of the (A2-A5) splitter at J1, J2 and J4 exciter/driver assembly to J232 on the...

  • Page 17: Power Amplifier Chassis Configurations

    LX Series Digital Chapter 2, Amplifier Assembly Description, Power Amplifier Assembly Maintenance & Remote Control Connections J233 on (A2-A6) to J232 on (A2-A13) the power amplifier modules #3 and #4 power amplifier. are not used. Finally a 2 way combiner is used in place of the 4 way combiner.

  • Page 18: System Configurations

    LX Series Digital Chapter 2, Amplifier Assembly Description, Power Amplifier Assembly Maintenance & Remote Control Connections 2.1.2 System Configurations Table 2-1: Typical LX Series Digital System Configuration Drawings and Parts Lists DIGITAL SYSTEM INTERCONNECT RACKING PLAN PARTS LIST CONFIGURATIONS 125W 1303940 1303596 1303913...
  • Page 19 LX Series Digital Chapter 2, Amplifier Assembly Description, Power Amplifier Assembly Maintenance & Remote Control Connections of the cabinet. A 500 Watt reject load & 15, if a problem occurs in the output (A18), mounted on the roof of the lines for the (A1) amplifier cabinet.
  • Page 20 LX Series Digital Chapter 2, Amplifier Assembly Description, Power Amplifier Assembly Maintenance & Remote Control Connections accomplished by combining three power combiner mounted on the roof of the amplifier chassis assemblies, creating one cabinets. J4 on the combiner connects to combined output, and combining the a 1.5 kW reject load (A1-A9), which other two power amplifier chassis...
  • Page 21 LX Series Digital Chapter 2, Amplifier Assembly Description, Power Amplifier Assembly Maintenance & Remote Control Connections the hybrid combiner. A thermal switch (A1-A9-A1) is mounted to the reject load The combined output of the A2 cabinet at and supplies an overtemperature fault, at (A2-A7-J6) of the hybrid combiner 175º...

  • Page 22: Power Amplifier Module Assembly, 250W

    LX Series Digital Chapter 2, Amplifier Assembly Description, Power Amplifier Assembly Maintenance & Remote Control Connections Table 2-2: Typical LX Series Power Amplifier Chassis Assemblies ASSEMBLY ASSEMBLY NAME PART NUMBER DESIGNATOR 500W/1 kW (250W/500W Digital) Chassis 1303953 Assembly Power Amplifier Assembly, 250W (125W A3 &...

  • Page 23: Power Amplifier Status Indicators

    LX Series Digital Chapter 2, Amplifier Assembly Description, Power Amplifier Assembly Maintenance & Remote Control Connections route these lines as the system's RF Amplifier module is routed to the power signals. In systems of output Upconverter module as AGC #1. A power greater than 50 Watts digital, system over-drive condition is detected system power is monitored by an...

  • Page 24: Power Supply Module Assembly

    LX Series Digital Chapter 2, Amplifier Assembly Description, Power Amplifier Assembly Maintenance & Remote Control Connections 2.1.4 Power Supply Module are attained from the samples of the Assembly, LX Series (1302863(2kW) Forward Power that connects to J1 and or 1306971(1kW); Appendix B) Reflected Power that connects to J3 of the system from the output coupler assembly.

  • Page 25: Principles Of Operation

    LX Series Digital Chapter 2, Amplifier Assembly Description, Power Amplifier Assembly Maintenance & Remote Control Connections 2.3.1 Principles of Operation There are several fault or interlock conditions that may exist in the Operating Modes transmitter that will prevent the transmitter from entering the operate This transmitter is either operating or in mode.

  • Page 26: Maintenance

    Volume 1 Chapter 5 of the Instruction module at least once a month. It is Manual for more information and to the suggested that this data be retained in a Axcera field support department at 724- rugged folder or envelope. 873-8100. 2.5 Customer Remote Connections 2.4 Maintenance...
  • Page 27 LX Series Digital Chapter 2, Amplifier Assembly Description, Power Amplifier Assembly Maintenance & Remote Control Connections TB30 TB31 Table 2-6: LX Series Chassis Assembly Hard Wired Remote Interface Connections to TB30 or TB31, which are 18 position Terminal Blocks located on the rear of the Assembly Signal Name Signal Type/Description...
  • Page 28 LX Series Digital Chapter 2, Amplifier Assembly Description, Power Amplifier Assembly Maintenance & Remote Control Connections Signal Name Signal Type/Description Designations Discrete Open Collector Input - A pull down to ground on RMT Power TB30-9 this line indicates that the transmitter power is to be Lower lowered.
  • Page 29 LX Series Digital Chapter 2, Amplifier Assembly Description, Power Amplifier Assembly Maintenance & Remote Control Connections Table 2-7: (Optional) Exciter Switcher Hard Wired Remote Interface Connections to TB1, 18 pos. Terminal Block are located on the Rear of the Exciter Switcher Tray Assembly. Signal Name Signal Type/Description Designations...

  • Page 30: Chapter 3 Site Considerations, Installation And Setup Procedures

    LX Series Digital Chapter 3, Site Considerations, Power Amplifier Assembly Installation and Setup Procedures Chapter 3 Site Considerations, Installation and Setup Procedures Table 3-1: LX Series Digital Transmitters AC Input and Current Requirements. Transmitter Voltage Current 125 Watt 220 VAC 10 Amps to the Exciter/Amplifier Cabinet 250 Watt 220 VAC...
  • Page 31 LX Series Digital Chapter 3, Site Considerations, Power Amplifier Assembly Installation and Setup Procedures determine the amount of heat to be ensure that no airborne particulates of removed from the transmitter room. any kind will be carried into the There are generally three sources of heat transmitter.
  • Page 32 LX Series Digital Chapter 3, Site Considerations, Power Amplifier Assembly Installation and Setup Procedures remote location, this number Interlocking the transmitter with should be reduced to 150 CFM. the air conditioner is recommended to keep the The inlet and outlet(s) must have transmitter from operating without automatic dampers that close any the necessary cooling.
  • Page 33 17,000 BTUs. The inlet manufacturer when questions arise. filter must be a minimum of seven Axcera can be contacted at (724) 873- square feet, larger for dusty and remote 8100. locations, for each 5000 watts or 17,000 BTUs.

  • Page 34: Unpacking The Chassis W/Modules And Bandpass Filter

    After removal of Inform Axcera as to the extent of any the screw, which is used to hold the damage as soon as possible.

  • Page 35: Ac Input

    LX Series Digital Chapter 3, Site Considerations, Power Amplifier Assembly Installation and Setup Procedures ON/OFF CIRCUIT BREAKER ON/OFF CIRCUIT BREAKERS Figure 3-3. Front and Rear View 76” Cabinet Typical 2kW Digital Configuration Connect the transmission line for the antenna system to the output of the coupler assembly or the Bandpass Filter.

  • Page 36: Setup And Operation

    LX Series Digital Chapter 3, Site Considerations, Power Amplifier Assembly Installation and Setup Procedures and operation procedures that follow coupler is connected to the antenna for before applying power to the transmitter. your system. 3.5 Setup and Operation 3.5.1 Input Connections Initially, the transmitter should be turned The input connections to the transmitter on with the RF output at the directional...

  • Page 37: Initial Turn On

    LX Series Digital Chapter 3, Site Considerations, Power Amplifier Assembly Installation and Setup Procedures Port Type Function Impedance 8 VSB IF Output (Jumper to J6) 50Ω RF Spare 2 50Ω RF Spare 1 50Ω (Not Used) Video Loop-Thru (Isolated) 75Ω (Not Used) Visual IF Loop-Thru Input 50Ω...

  • Page 38: Vhf/Uhf Upconverter Module Leds On Front Panel

    LX Series Digital Chapter 3, Site Considerations, Power Amplifier Assembly Installation and Setup Procedures 3.5.2.3 VHF/UHF Upconverter Module TEMP: This illuminates Green when the LEDs on Front Panel temperature of the heatsink in the PA is below 78°C. Fault Indicators: MOD OK: This illuminates Green when AGC FAULT: This illuminates Red if the the PA module is operating and has no...
  • Page 39 LX Series Digital Chapter 3, Site Considerations, Power Amplifier Assembly Installation and Setup Procedures only to be used for temporary reductions in power. The power set-back values do If a problem occurred during the setup not directly correspond to the power of and operation procedures, refer to the transmitter.

  • Page 40: Power Amplifier Chassis Assembly

    LX Series Digital Chapter 4, Circuit Descriptions Power Amplifier Assembly Chapter 4 Circuit Descriptions Power Amplifier Chassis Assembly 4.1 (A4) Power Amplifier Module Assembly The RF from the exciter/driver assembly connects from the RF Output “N” Jack J25, The Power Amplifier Module Assembly through a RG-55 cable, to the PA RF Input contains (A1) a UHF Phase/Gain Board “N”...

  • Page 41: Watt Driver Pallet Assembly

    LX Series Digital Chapter 4, Circuit Descriptions Power Amplifier Assembly CR2 and CR3. This voltage is controlled by the phase-adjust pot R24 through PIN diode VR1 is a variable-damping R26, R18 and R19. +12 VDC from an circuit that is used to adjust the external switching power supply is amplification of the module.

  • Page 42: Way Uhf Combiner Assembly

    LX Series Digital Chapter 4, Circuit Descriptions Power Amplifier Assembly 4.1.5 (A5) 2 Way UHF Combiner 3 Blinks indicate +32V Power Supply Assembly (1303208; Appendix B) Over Voltage Fault. 4 Blinks indicate +32V Power Supply The 2 Way UHF combiner board assembly Under Voltage Fault.
  • Page 43 LX Series Digital Chapter 4, Circuit Descriptions Power Amplifier Assembly to shunt current away from the LED to the event of low power supply voltage, turn it Off. U9 below U8 is used to approximately +25.4 VDC. enable different features within the software.

  • Page 44: Power Supply Assembly

    LX Series Digital Chapter 4, Circuit Descriptions Power Amplifier Assembly Forward and Reflected power detector to an output of the board, the Fault Alert sections of the board. circuit and also shuts down Amplifier #1. Page 3 Gain of the power measurements is completed through software.
  • Page 45 LX Series Digital Chapter 4, Circuit Descriptions Power Amplifier Assembly There are two identical signal paths on R8, C3, and C8. For digital operation the the board: one for forward power and jumper W2 on J7 is between pins 1 & 2. one for reflected power.
  • Page 46 APPENDIX A LX SERIES SYSTEM SPECIFICATIONS...
  • Page 47 Configurations are available in power levels from 10 watts to 6 kilowatts analog and up to 3 kilowatts DTV, and all are manufactured in the USA by Axcera - The RF Experts.
  • Page 48 RF Load Impedance Specifications published here are current as of the date of publication of this document. Because we are continuously improving our products, Axcera reserves the right to change specifications without prior notice. At any time, you may verify product specifications by contacting our office.
  • Page 49 APPENDIX B DRAWING LISTS...
  • Page 50 LX Series Digital Appendix B, Drawings and Parts Lists Power Amplifier Assembly LX Series Digital High Power System LX Series Transmitter Block Diagrams ......(50W-1 kW Digital) 1302633, LX Series Digital Transmitter Interconnects..(125W, 250W & 500W) 1303940, LX Series 50-1000 Watt Digital Transmitter Typical Racking Plan ..... 1303596 Chassis Assembly, Power Amplifier, LX Series Power Amplifier Chassis Assembly Block Diagram ........
  • Page 51 LX Series Digital Appendix B, Drawings and Parts Lists Power Amplifier Assembly 150 Watt UHF Driver Pallet Assembly Schematic..................1303171 2-Way Combiner Board Assembly Schematic..................1303211 UHF Phase/Gain Board Schematic..................1303216 Power Supply Assembly, 2 kW, LX Series (One Power Supply Assembly Supplies Power to Two Amplifier Assemblies) Block Diagram ..................
  • Page 52 APPENDIX C TRANSMITTER LOG SHEET...
  • Page 53 UHF LX Series Digital Transmitter Appendix C, Log Sheet DESCRIPTION OF TRANSMITTER READING FROM LCD DISPLAY PARAMETER DATE READINGS TAKEN Model Number Code Version Firmware Number OUTPUT MEASUREMENTS % FORWARD POWER % REFLECTED POWER DM8 DIGITAL MODULATOR DETAILS MODE SOURCE LINEAR EQ NON-LINEAR EQ (Settings Customized per...
  • Page 54 UHF LX Series Digital Transmitter Appendix C, Log Sheet DESCRIPTION OF TRANSMITTER READING FROM LCD DISPLAY PARAMETER INT. 10 MHz IF INPUT LEVEL SYSTEM CONTROL DETAILS Power Supply Enable For DRIVER AND PA DETAILS POWER SUPPLY STATE, 32V FORWARD POWER REFLECTED POWER AMP 1 CURRENT AMP 2 CURRENT...
  • Page 55 UHF LX Series Digital Transmitter Appendix C, Log Sheet DESCRIPTION OF TRANSMITTER READING FROM LCD DISPLAY PARAMETER AMP SET 1 MODULE 4 POWER SUPPLY VOLTAGE, 32V 32V SUPPLY FORWARD POWER REFLECTED POWER AMP CURRENT 1 AMP CURRENT 2 AMP CURRENT 3 AMP TEMPERATURE CODE VERSION AMP SET 2 MODULE 1...
  • Page 56 UHF LX Series Digital Transmitter Appendix C, Log Sheet DESCRIPTION OF TRANSMITTER READING FROM LCD DISPLAY PARAMETER AMP SET 2 MODULE 4 POWER SUPPLY VOLTAGE, 32V 32V SUPPLY FORWARD POWER REFLECTED POWER AMP CURRENT 1 AMP CURRENT 2 AMP CURRENT 3 AMP TEMPERATURE CODE VERSION AMP SET 3 MODULE 1...
  • Page 57 UHF LX Series Digital Transmitter Appendix C, Log Sheet DESCRIPTION OF TRANSMITTER READING FROM LCD DISPLAY PARAMETER AMP SET 3 MODULE 4 POWER SUPPLY VOLTAGE, 32V 32V SUPPLY FORWARD POWER REFLECTED POWER AMP CURRENT 1 AMP CURRENT 2 AMP CURRENT 3 AMP TEMPERATURE CODE VERSION AMP SET 4 MODULE 1...
  • Page 58 UHF LX Series Digital Transmitter Appendix C, Log Sheet DESCRIPTION OF TRANSMITTER READING FROM LCD DISPLAY PARAMETER AMP SET 4 MODULE 4 POWER SUPPLY VOLTAGE, 32V 32V SUPPLY FORWARD POWER REFLECTED POWER AMP CURRENT 1 AMP CURRENT 2 AMP CURRENT 3 AMP TEMPERATURE CODE VERSION AMP SET 5 MODULE 1...
  • Page 59 UHF LX Series Digital Transmitter Appendix C, Log Sheet DESCRIPTION OF TRANSMITTER READING FROM LCD DISPLAY PARAMETER AMP SET 5 MODULE 4 POWER SUPPLY VOLTAGE, 32V 32V SUPPLY FORWARD POWER REFLECTED POWER AMP CURRENT 1 AMP CURRENT 2 AMP CURRENT 3 AMP TEMPERATURE CODE VERSION AMP SET 6 MODULE 1...
  • Page 60 UHF LX Series Digital Transmitter Appendix C, Log Sheet DESCRIPTION OF TRANSMITTER READING FROM LCD DISPLAY PARAMETER AMP SET 6 MODULE 4 POWER SUPPLY VOLTAGE, 32V 32V SUPPLY FORWARD POWER REFLECTED POWER AMP CURRENT 1 AMP CURRENT 2 AMP CURRENT 3 AMP TEMPERATURE CODE VERSION NOTE: The previous Log Sheet readings can be taken from the System Details...

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