Preliminary Instruction Manual Innovator, LX Series Digital VHF High Band Driver/Transmitter w/Axciter Modulator 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.
Digital VHF HB Driver/Transmitter w/Axciter Modulator Table of Contents TABLE OF CONTENTS CHAPTER 1 INTRODUCTION SECTION PAGE 1.1 Manual Overview ...................................................................................1-1 1.2 Assembly Designation Numbers ..............................................................1-1 1.3 Safety ..................................................................................................1-2 1.4 Contact Information .........................................
Digital VHF HB Driver/Transmitter w/Axciter Modulator Table of Contents TABLE OF CONTENTS - (Continued) SECTION PAGE 4.1.4 Switching Power Supply Assembly..................................................4-4 4.2 Driver Power Amplifier Module Assembly, VHF, DTV ..................................4-4 4.2.1 25 Watt VHF Pallet Assembly.........................................................4-5 4.2.2 200 Watt VHF Amplifier Pallet Assembly .........................................4-5 4.2.
Digital VHF HB Driver/Transmitter w/Axciter Modulator Table of Contents LIST OF FIGURES FIGURE 1-1 PAGE Brady Marker Identification Drawing.................................................1-1 2-1 2-2 Digital LX Series Driver/Amplifier Front View Modules.........................2-1 Rear View LX Series Chassis Assembly..............................................2-9 3-1 3-2 3-3 3-4 3-5 500 Minimum Ventilation Configuration.............................................
Digital VHF HB Driver/Transmitter w/Axciter Modulator Table of Contents LIST OF TABLES TABLE 2-1 2-2 2-3 2-4 2-5 2-6 2-7 2-8 2-9 2-10 2-11 PAGE Digital LX Series Driver/Amplifier Assembly and Modules ....................2-1 Controller/Power Supply Front Panel Display .....................................2-2 Controller/Power Supply Front Panel Status Indicators .......................2-2 Controller/Power Supply Front Panel Control Adjustments...................
Digital VHF HB Driver/Transmitter w/Axciter Modulator Chapter 1, Introduction Chapter 1 Introduction 1.1: Manual Overview This manual explains the installation, setup, alignment, and maintenance procedures for the LX Series modular Digital VHF High Band driver/transmitter. If your transmitter contains external power amplifier assemblies, then information and drawings on the external amplifier assemblies are contained in Volume 2.
Digital VHF HB Driver/Transmitter w/Axciter Modulator Chapter 1, Introduction 1.3: Safety Replacement Parts – When replacement parts are used, be sure that the parts have the same functional and performance characteristics as the original part. Unauthorized substitutions may result in fire, electric shock, or other hazards. Please contact the Axcera Technical Service Department if you have any questions regarding service or replacement parts.
Digital VHF HB Driver/Transmitter w/Axciter Modulator Chapter 1, Introduction The RMA# can be obtained from any Axcera Field Service Engineer by contacting the Axcera Field Service Department at (724) 873-8100 or by fax at (724) 873-8105. This procedure applies to all items sent to the Field Service Department regardless of whether the item was originally manufactured by Axcera.
Digital VHF HB Driver/Transmitter w/Axciter Modulator Chapter 1, Introduction F WARNING!!! × HIGH VOLTAGE Ø DO NOT ATTEMPT TO REPAIR OR TROUBLESHOOT THIS EQUIPMENT UNLESS YOU ARE FAMILIAR WITH ITS OPERATION AND EXPERIENCED IN SERVICING HIGH VOLTAGE EQUIPMENT. LETHAL VOLTAGES ARE PRESENT WHEN POWER IS APPLIED TO THIS SYSTEM. IF POSSIBLE, TURN OFF POWER BEFORE MAKING ADJUSTMENTS TO THE SYSTEM.
Digital VHF HB Driver/Transmitter w/Axciter Modulator Chapter 1, Introduction 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. RESCUE BREATHING 1. Find out if the person is breathing.
Digital VHF HB Driver/Transmitter w/Axciter Modulator Chapter 1, Introduction dBm, dBw, dBmV, dBµV, & VOLTAGE EXPRESSED IN WATTS 50 Ohm System WATTS 1,000,000,000,000 100,000,000,000 10,000,000,000 1,000,000,000 100,000,000 10,000,000 1,000,000 100,000 10,000 1,000 100 50 20 10 1 0.1 0.01 0.001 0.0001 0.00001 0.000001 0.0000001 0.00000001 0.000000001 0.0000000001 0.00000000001 0.
Digital VHF HB Driver/Transmitter w/Axciter Modulator Chapter 1, Introduction USEFUL CONVERSION FACTORS TO CONVERT FROM TO MULTIPLY BY mile (US statute) kilometer (km) inch (in) millimeter (mm) inch (in) centimeter (cm) inch (in) meter (m) foot (ft) meter (m) yard (yd) meter (m) mile per hour (mph) kilometer per hour(km/hr) mile per hour (mph) meter per second (m/s) pound (lb) kilogram (kg) gallon (gal) liter U.S. liquid (One U.S. gallon equals 0.
Digital VHF HB Driver/Transmitter w/Axciter Modulator Chapter 1, Introduction RETURN LOSS VS. VSWR 0 -10 -20 R E -30 T U R N dB L O S S -40 -50 -60 -70 1.001 1.01 1.1 VSWR LX Series, Digital, Rev. 0 1-8 2.
Digital VHF HB Driver/Transmitter w/Axciter Modulator Chapter 1, Introduction ABBREVIATIONS/ACRONYMS AC Alternating Current FEC Forward Error Correction AFC Automatic Frequency Control FM Frequency modulation ALC Automatic Level Control FPGA Field Programmable Gate Array AM Amplitude modulation Hz Hertz AGC Automatic Gain Control ICPM Incidental Carrier Phase Modulation AWG American wire gauge I/P Input BER Bit Error Rate IF Intermediate Frequency BW Bandwidth LED Light emit
Digital VHF HB Driver/Transmitter w/Axciter Modulator Chapter 2, System Description & Remote Control Connections Chapter 2 System Description & Remote Control Connections A1 A5 A4 A6 Figure 2-1: Driver/Amplifier Chassis Assembly w/external Axciter Front View Modules Table 2-1: Digital Driver/Amplifier Chassis Modules w/external Axciter ASSEMBLY DESIGNATOR MODULE/ASSEMBLY NAME PART NUMBER Chassis Assembly, HX-E 1307716 (220 VAC) A1 Axciter Downconverter Module 1306852 Control & Monitoring/Power Supply A4
Digital VHF HB Driver/Transmitter w/Axciter Modulator Chapter 2, System Description & Remote Control Connections 2.1.1: (A4) Control & Monitoring/ Power Supply Module Assembly, 220VAC (1303229; Appendix A) Board (1302837) and a Switch Board (1527-1406). The Assembly also contains a switching power supply that provides ±12 VDC to the rest of the modules in the chassis and +32 VDC to the Power Amplifier module. The Assembly provides all transmitter control and monitoring functions.
Digital VHF HB Driver/Transmitter w/Axciter Modulator Chapter 2, System Description & Remote Control Connections 2.1.2: (A6) Driver Power Amplifier Module Assembly, VHF, DTV (1305822; Appendix A) the LO/Upconverter at J23 to J24 the RF input to the PA Assembly. The Power Amplifier module contains an amplifier control and monitoring board. This board monitors the RF output power, RF reflected power, the current draw of amplifier sections, the supply voltage, and the temperature of the PA heat sink.
Digital VHF HB Driver/Transmitter w/Axciter Modulator Chapter 2, System Description & Remote Control Connections Table 2-5: Power Amplifier Status Indicator LED FUNCTION When lit Green, it indicates that the PA is in the Operate Mode. If a ENABLED Mute occurs, the PA will remain Enabled, until the input signal is (Green) returned. DC OK When lit Green, it indicates that the fuse protected DC inputs to the (Green) PA module are OK.
Digital VHF HB Driver/Transmitter w/Axciter Modulator Chapter 2, System Description & Remote Control Connections 2.1.2.1: (A6) Power Amplifier Assembly, DTV/DVB, VHF (1309218; Appendix A) The Power Amplifier module contains an amplifier control and monitoring board. This board monitors the RF output power, RF reflected power, the current draw of amplifier sections, the supply voltage, and the temperature of the PA heat sink.
Digital VHF HB Driver/Transmitter w/Axciter Modulator Chapter 2, System Description & Remote Control Connections Table 2-8: Power Amplifier Status Indicator LED FUNCTION When lit Green, it indicates that the PA is in the Operate Mode. If a ENABLED Mute occurs, the PA will remain Enabled, until the input signal is (Green) returned. DC OK When lit Green, it indicates that the fuse protected DC inputs to the (Green) PA module are OK.
Digital VHF HB Driver/Transmitter w/Axciter Modulator Chapter 2, System Description & Remote Control Connections 2.2.1: Pre-Filter Sample (Non-Linear Distortion) and Post-Filter Sample (Linear Distortion) 2.4: System Operation When the transmitter is in operate, as set by the menu screen located on the Control & Monitoring Module. The +32 VDC stage of the Power Supply in the Control & Monitoring Module is enabled, the operate indicator on the front panel is lit and the DC OK on the front panel is green.
Digital VHF HB Driver/Transmitter w/Axciter Modulator • • • Chapter 2, System Description & Remote Control Connections A low on the Remote Transmitter Operate line. User selects "OPR" using switches and menus of the front panel. Receipt of an “Operate CMD” over the serial interface. feature is implemented in transmitter software version 1.4 and above. Operating Frequency The transmitter controller is designed to operate on VHF frequencies.
Digital VHF HB Driver/Transmitter w/Axciter Modulator Chapter 2, System Description & Remote Control Connections especially important after the transmitter has been transported permit the free flow of air for cooling purposes. The amount of time between cleanings depends on the conditions within the transmitter room. While the electronics have been designed to function even if covered with dust, a heavy buildup of dust, dirt, or insects will affect the cooling of the components.
Digital VHF HB Driver/Transmitter w/Axciter Modulator Chapter 2, System Description & Remote Control Connections Table 2-11: LX Series Chassis Assembly Hard Wired Remote Interface Connections to TB30 or TB31, 18 pos. Terminal Blocks Located on the Rear of the Assembly Pin Signal Name Signal Type/Description Designations RMT Discrete Open Collector Output - A low indicates that Transmitter TB30-1 the transmitter is in the operate mode.
Digital VHF HB Driver/Transmitter w/Axciter Modulator RMT Spare 1 RMT Spare 2 Pin Designations TB30-13 TB30-14 RMT +12 VDC TB30-16 RMT -12 VDC TB30-18 RMT Ground TB30-15, and 17 Signal Name LX Series, Digital, Rev. 0 Chapter 2, System Description & Remote Control Connections Signal Type/Description Remote connection to spare module - Use is TBD. Remote connection to spare module - Use is TBD.
Digital VHF HB Driver/Transmitter w/Axciter Modulator Chapter 3, Site Considerations, Installation and Setup Procedures Chapter 3 Site Considerations, Installation and Setup Procedures Table 3-1: LX Series Digital Transmitters/Drivers AC Input and Current Requirements.
Digital VHF HB Driver/Transmitter w/Axciter Modulator Chapter 3, Site Considerations, Installation and Setup Procedures to this design, the greater the operating capacity of the transmitter. method and is the only way to create anything close to an ideal environment. The fans are designed and built into the transmitter will remove the heat from within the modules, but additional means are required for removing this heat from the building. To achieve this, a few issues need to be resolved.
Digital VHF HB Driver/Transmitter w/Axciter Modulator Chapter 3, Site Considerations, Installation and Setup Procedures separate the front of the transmitter from the rear of the unit will adversely affect the flow of cooling air. 4. 5. velocity of 300 feet per minute through the filter. This is not a conservative number but a neverexceed number. In a dusty or remote location, this number should be reduced to 150 CFM.
Digital VHF HB Driver/Transmitter w/Axciter Modulator Chapter 3, Site Considerations, Installation and Setup Procedures transmitter and to a 10-inch diameter for 5-kW and 6-kW transmitters. An equivalent rectangular duct may be used but, in all cases, the outlet must be increased by 50% through the outlet screen. 14. locations, for each 5000 watts or 17,000 BTUs. The exhaust must be at least four square feet at the exhaust screen for each 5000 watts or 17,000 BTUs.
Digital VHF HB Driver/Transmitter w/Axciter Modulator Chapter 3, Site Considerations, Installation and Setup Procedures 3.2: Unpacking the Chassis w/modules, circulator, low pass filter, Digital Mask filter and coupler assemblies 3.3: Installing the Chassis w/modules, circulator, low pass filter, Digital Mask filter, and pre and post filter coupler assemblies Thoroughly inspect the chassis with modules and all other materials upon their arrival.
Digital VHF HB Driver/Transmitter w/Axciter Modulator Chapter 3, Site Considerations, Installation and Setup Procedures Figure 3-2: Tray Slides Cabinet Mounting Diagram Figure 3-3: Front and Rear View Reconnection Drawing 3.
Digital VHF HB Driver/Transmitter w/Axciter Modulator Chapter 3, Site Considerations, Installation and Setup Procedures load is not available, check that the output of the coupler assembly is connected to the antenna for your system. 3.5.1: Input Connections Figure 3-4: AC Input Box Assembly NOTE: An AC On/Off Circuit Breaker is located on the rear of the Exciter/Driver Chassis Assembly, near the AC input jack.
Digital VHF HB Driver/Transmitter w/Axciter Modulator Table 3-2: Rear Chassis Port Type J1 IEC TB02 Term J3 BNC J4 BNC J5 BNC J6 BNC J7 BNC J8 BNC J9 BNC J10 BNC J12 BNC J13 BNC J15 BNC J17 BNC J18 BNC J19 BNC J23 BNC J24 BNC J25 N Chapter 3, Site Considerations, Installation and Setup Procedures Connections for the LX Series Digital Driver/Amplifier.
Digital VHF HB Driver/Transmitter w/Axciter Modulator Chapter 3, Site Considerations, Installation and Setup Procedures 3.5.2.2: Controller Module LEDs on Front Panel 2 Blinks indicate Temperature Fault. 3 Blinks indicate +32V Power Supply Over Voltage Fault. 4 Blinks indicate +32V Power Supply Under Voltage Fault. 5 Blinks indicate Reflected Power Fault. 6 Blinks indicate +12V or –12V Power Supply Fault Status Indicators: OPERATE - This illuminates Green when transmitter is in operate.
Digital VHF HB Driver/Transmitter w/Axciter Modulator Chapter 3, Site Considerations, Installation and Setup Procedures Table 3-4: Menu 02- Splash Screen #2 This is the second of the two transmitter splash screens. This screen will automatically switch to the Main Screen. The Model Number, Code Version Number and Firmware Number for your system are displayed on this screen. Make note of these two numbers when conferring with Axcera on software problems.
Digital VHF HB Driver/Transmitter w/Axciter Modulator Chapter 3, Site Considerations, Installation and Setup Procedures Table 3-8: Menu 13 - Transmitter Configuration Access Screen This screen of the transmitter allows access to various software settings of the transmitter system. If ENT is pushed, go to Menu 40, Table 3-13, the access to transmitter configuration and set up. Before pushing the ENT button: if the ↓ key is activated the display returns to Menu 10, Main Screen.
Digital VHF HB Driver/Transmitter w/Axciter Modulator Chapter 3, Site Considerations, Installation and Setup Procedures Table 3-12: Transmitter Device Parameters Detail Screens System Component Parameter Normal Faulted (Blinking) D/C PIN ATTEN VOLTAGE OVERDRIVE FAULT AGC MODE ADAPTIVE EQUALIZATION STATUS MEASURED SIGNAL TO NOISE PLL STATUS SMTE310 INPUT STATUS DEMOD FUNCTION STATUS FX VERSION NB VERSION D/C PIN ATTEN VOLTAGE U/C PIN ATTEN VOLTAGE AFC 1 LEVEL INPUT STATUS OUTPUT STATUS AGC 1 LEVEL AGC 2
Digital VHF HB Driver/Transmitter w/Axciter Modulator Chapter 3, Site Considerations, Installation and Setup Procedures and the general behavior of the transmitter. Please do not make changes within the transmitter's set-up screens unless you are familiar with the operation of the transmitter. This screen is implemented in transmitter software version 1.4 and above. Pressing ENT will put you into the Transmitter Set Up Screens for Menu 40. A safeguard is added to the Set Up Menus in software version 2.
Digital VHF HB Driver/Transmitter w/Axciter Modulator Chapter 3, Site Considerations, Installation and Setup Procedures Table 3-16: Menu 40-5 - Transmitter Set-up: Serial Address Screen This screen allows the user to set the serial address of the transmitter. The default address is 5. This value and all other set-up parameters are stored in non-volatile memory.
Digital VHF HB Driver/Transmitter w/Axciter Modulator Chapter 3, Site Considerations, Installation and Setup Procedures transmitter will enable, measure power and if above this value plus five percent it will again shut down for five minutes. If the system's reflected output power exceeds the maximum reflected power threshold due to some condition like the formation of ice on an antenna, the transmitter reduces visual forward power to a level where the reflected power is less than this threshold.
Digital VHF HB Driver/Transmitter w/Axciter Modulator Chapter 4, Circuit Descriptions Chapter 4 Circuit Descriptions NOTE: Information and drawings on the Axciter Modulator Tray and the Upconverter Module and Downconverter Module are contained in the separate Axciter Manual. back to Jack J1 at Pin 5, which becomes the AC Line #2 to the Fan. The other line of the split connects to J2. J1-2 is the earth ground input for the AC and connects to J3. 4.
Digital VHF HB Driver/Transmitter w/Axciter Modulator PS6 protects the +12 VDC 2 Amp circuits for the Remote through J63 pins 17, 18, 19 and 20. If this circuit is operational, the Green LED DS6, mounted on the board, will be lit -12 VDC Circuits -12 VDC from the Switching Power Supply Assembly connects to J5 on the board. The -12 VDC is divided into two separate circuits each with a 3 amp self resetting fuse, PS1 and PS2.
Digital VHF HB Driver/Transmitter w/Axciter Modulator Chapter 4, Circuit Descriptions 4.1.2.2: Schematic Page 2 4.1.2.4: Schematic Page 4 U9 is a non-inverting transceiver IC that provides 2 way asynchronous communication between data busses. The IC is used as an input buffer to allow the microcontroller to monitor various digital input values. U19 and U20 are digitally controlled analog switches that provide samples back to the microprocessor. Each analog input is expected to be between 0 and 5 VDC.
Digital VHF HB Driver/Transmitter w/Axciter Modulator the transistor to increase towards +12 VDC, forward biasing the transistor. With the transistor forward biased, current will flow from ground through the LED, the transistor and the current limiting resistors in the collector to the +12 VDC source. The effected LED will light. With the LED control line HIGH, the MOSFET is On, which causes the base of the transistor go toward ground potential, reverse biasing the transistor.
Digital VHF HB Driver/Transmitter w/Axciter Modulator The Power Amplifier Module Assembly contains (A5) an Amplifier Control Board (1308260), (A4) a Coupler Board (1308258), (A2) a 25 Watt VHF Driver Module (1305820), and (A3) a 200 Watt Power Amplifier Assembly (1300167). The RF input (-2 dBm) to the PA assembly from the Upconverter Module Assembly connects from the Upconverter RF Output BNC Jack J23 to the PA RF Input BNC Jack J24, located on the rear of the driver/amplifier chassis assembly. 4.2.
Digital VHF HB Driver/Transmitter w/Axciter Modulator Over Voltage Fault. 4 Blinks: Indicate +32V Power Supply Under Voltage Fault. 5 Blinks: Indicate Reflected Power Fault. 6 Blinks: Indicate +12V or –12V Power Supply Fault Chapter 4, Circuit Descriptions state during a microcontroller reset. A FET is turned on to shunt current away from the LED to turn it off. U8 below U6 is used to enable different features within the software. Actual use is to be determined. 4.2.4.
Digital VHF HB Driver/Transmitter w/Axciter Modulator 4.2.4.3: Schematic Page 2, Current Monitoring Sections of the Board. The ICs U14, U15 and U16 along with associated components set up the current monitoring sections of the board. R67, R68 and R69 are 0.01O/5W 1% through hole resistors used for monitoring the current through several sections of the amplifier. The voltage developed across these resistors are amplified for current monitoring by U14, U15 or U16.
Digital VHF HB Driver/Transmitter w/Axciter Modulator 4.3: (A4) Power Amplifier Assembly, DTV/DVB, VHF (1309218; Appendix A) NOTE: The 1309218 PA Assembly is used in the LHV50ATD & LHV60ATD Transmitters. Refer to the 1305822 Driver PA Assembly, which is in the previous section, for the driver PA used in high power transmitters.
Digital VHF HB Driver/Transmitter w/Axciter Modulator If the Module OK LED, DS6, located on the front panel, is Red and blinking, a fault is present. The meaning of the blinking LED is as follows. 1 Blink: Indicates Amplifier Current Fault. 2 Blinks: Indicate Temperature Fault. 3 Blinks: Indicate +32V Power Supply Over Voltage Fault. 4 Blinks: Indicate +32V Power Supply Under Voltage Fault. 5 Blinks: Indicate Reflected Power Fault.
Digital VHF HB Driver/Transmitter w/Axciter Modulator amplifier U15 or U16 at high current shut down should be greater than 15 Amps. U12B is used to detect high power supply voltage. U13A is used to indicate that the power supply voltage is less than 26 volts. U13B determines if the power supply temperature gets too hot. 4.2.4.3: Schematic Page 2, Current Monitoring Sections of the Board. The ICs U14, U15 and U16 along with associated components set up the current monitoring sections of the board.
Digital VHF HB Driver/Transmitter w/Axciter Modulator This completes the description of the Power Amplifier Module Assembly. The RF output from the exciter driver or power amplifier (˜ +50 dBm Visual, +40 dBm Aural or ˜ +47.7 dBm Digital) is at the RF output jack J25, an “N” connector. The RF is cabled to the input of the external power amplifier or to the external circulator. LX Series, Digital, Rev.
Digital VHF HB Driver/Transmitter w/Axciter Modulator Chapter 5, Detailed Alignment Procedures Chapter 5 Detailed Alignment Procedures 5.1: System Preparation need to be replaced, it is only used during shipping. If the replacement module does not slide in easily, verify it is properly aligned in the nylon tracks, located on both the top and bottom of the module. This transmitter was aligned at the factory and should not require additional adjustments to achieve normal operation.
Digital VHF HB Driver/Transmitter w/Axciter Modulator Chapter 5, Detailed Alignment Procedures that the 10 MHz input from the GPS is connected to J9 on the Axciter Modulator. each Module in turn. These adjustments must be completed when the System is at the desired output power level. The check of and the setup of the drive level and output power of the transmitter are completed using the LCD Display on the control/power supply module.
Digital VHF HB Driver/Transmitter w/Axciter Modulator Chapter 5, Detailed Alignment Procedures Figure 5-1: Axciter Upconverter/Downconverter Main Screen 5.3.2.2: Setting up of AGC 2 5.3.3: Setting up of Overdrive Threshold NOTE: AGC2 is only used in systems with external power amplifiers. On the Axciter Upconverter Screen set the Overdrive Threshold to 1.6 Volts, by selecting 7 on the key board entry. This will cause a detail screen to appear.
Digital VHF HB Driver/Transmitter w/Axciter Modulator Chapter 5, Detailed Alignment Procedures attenuators to be placed in line with the samples to get them within the desired range. J1 connection to the FWD power sample of the coupler before the mask filter. Pre-Filter Sample, Non-Linear Distortion. Level into Relay at J1 should be 0 dBm to –10 dBm. –5 dBm typical display on the Driver/Amplifier in the Set Up menus.
APPENDIX A DRAWINGS
Digital VHF HB Driver/Transmitter w/Axciter Modulator Appendix A, Drawings and Parts Lists Innovator LX Series Digital System Remote Site System Drawings.................................................................... 1309808 NOTE: The Drawings for the Axciter Modulator and the Upconverter Sled and the Downconverter Sled Modules are found in the separate Axciter Manual. Chassis Assembly, Driver, 220 VAC, HX-E Interconnect ................................................................................
APPENDIX B SPECIFICATIONS SHEET
INNOVATOR LX Low Power ATSC Transmitter 5W – 3kW LU500ATD Shown Designed to provide broadcasters with a product that will meet their needs like no other solution on the market, this advanced low to medium power transmitter line uses the latest LDMOS UHF or MOSFET VHF devices for broadband operation across the entire operating band. This allows users to minimize spare parts stock, which is especially important to group owners and networks, and also enables simple and inexpensive channel changes.
INNOVATOR LX DIGITAL Low Power ATSC Transmitter 5W – 3kW Options Performance Frequency Range LLV LHV LU Dual Exciter with Automatic Switcher AC Surge Protector Precise Frequency Kit Stringent Mask Filter Spare Parts Kit 1 54 to 88 MHz 174 to 216 MHz 470 to 806 MHz Frequency Stability w/Precise Frequency Option ±1kHz (max 30 day variation) ±2 Hz Regulation of RF Output Power 3% 1 2 Out of Band - Compliant with FCC Mask Channel Edge ±500kHz 6 MHz from Channel Edge -47 dB or better -110 dB or bett
