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Axcera INNOVATOR Instruction Manual

Uhf analog driver/transmitter/translator
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INSTRUCTION MANUAL
Innovator,
LX Series
UHF Analog
Driver/Transmitter/Translator
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 UHF Analog Driver/Transmitter/Translator 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

    1.2 Assembly Designators ..............1-1 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 SYSTEM DESCRIPTION, MAINTENANCE & REMOTE CONTROL CONNECTIONS System Overview ................2-1 2.0 (Optional) Exciter Switcher Tray............
  • Page 3 UHF Analog Driver/Transmitter/Translator Table of Contents TABLE OF CONTENTS - (Continued) SECTION PAGE 4.0.1 Exciter Switcher Control Board ..........4-1 4.1 (Optional) Receiver Module (not used in a transmitter system) ....4-1 4.1.1 IF ALC Board ................. 4-1 4.1.2 UHF Mixer/PLL Board............... 4-2 4.1.3 UHF Preamplifier Board ............
  • Page 4 UHF Analog Driver/Transmitter/Translator Table of Contents TABLE OF CONTENTS - (Continued) SECTION PAGE 4.6 Exciter PA Module used in 10-100Watt Xmitters. or Drivers above 2kW ..4-19 4.6.1 1 Watt Amplifier Module Assembly ..........4-20 4.6.2 1 Watt UHF Amplifier Board .............4-20 4.6.3 40 Watt UHF Amplifier Assembly..........4-20 4.6.4 UHF Module Assembly, RF Module Pallet........4-21 4.6.5 Coupler Board Assembly ............4-21...
  • Page 5 UHF Analog Driver/Transmitter/Translator Table of Contents LIST OF FIGURES FIGURE PAGE Brady Marker Identification Drawing ..........1-1 Exciter/Driver Chassis Assembly Front View........2-1 Exciter/Driver Chassis Assembly Rear View ........2-18 1 kW Minimum Ventilation Configuration ........3-4 Front and Rear View Reconnection Drawings ........3-5 Ac Input Box Assembly ..............
  • Page 6 UHF Analog Driver/Transmitter/Translator Table of Contents LIST OF TABLES TABLE PAGE LX Series Trays and Assemblies........... 2-1 Receiver Front Panel Switch............2-3 Receiver Front Panel Status Indicators .......... 2-3 Receiver Front Panel Control Adjustments ........2-3 Receiver Front Panel Samples ............. 2-3 Modulator Front Panel Switch............
  • Page 7 UHF Analog Driver/Transmitter/Translator Table of Contents LIST OF TABLES – (Continued) TABLE PAGE 3-20 Menu 20 Error List Display Screen..........3-14 3-21 Menu 30 Transmitter Device Details Screen .........3-15 3-22 Menu 30-1 System Details Screens ..........3-15 3-23 Transmitter Device Parameters Detail Screens ......3-15 3-24 Menu 40 Authorized Personnel Screen ........3-16 3-25...

  • Page 8: Manual Overview

    This manual explains the installation, and boards in the system. These setup, alignment, and maintenance designations are referenced in the text of procedures for the Innovator LX Series this manual and shown on the block UHF analog modular driver/transmitter/ diagrams and interconnect drawings translator.

  • Page 9: 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 10: Limited One Year Warranty For Axcera Products

    The MRA# 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 11 UHF Analog Driver/Transmitter/Translator Chapter 1, Introduction F WARNING!!! × HIGH VOLTAGE Ø 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. IF POSSIBLE, TURN OFF POWER BEFORE MAKING ADJUSTMENTS TO THE SYSTEM.
  • Page 12 UHF Analog Driver/Transmitter/Translator 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.
  • Page 13 UHF Analog Driver/Transmitter/Translator Chapter 1, Introduction Note: Because of possible FCC assigned offset, check for the assigned Carrier Frequency as written on License. UHF Frequency Assignments Channel Bandwidth Video Color Audio Number (MHz) (MHz) (MHz) (MHz) 470-476 471.25 474.83 475.75 476-482 477.25 480.83...
  • Page 14 UHF Analog Driver/Transmitter/Translator Chapter 1, Introduction Note: Because of possible FCC assigned offset, check for the assigned Carrier Frequency as written on License. UHF Frequency Assignments Channel Bandwidth Video Color Audio Number (MHz) (MHz) (MHz) (MHz) 650-656 651.25 654.83 655.75 656-662 657.25 660.83...
  • Page 15 UHF Analog Driver/Transmitter/Translator Chapter 1, Introduction dBm, dBw, dBmV, dBµ 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 +100 1,000,000,000 1 GIGAWATT +120 + 99...
  • Page 16 UHF Analog Driver/Transmitter/Translator Chapter 1, Introduction 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) meter (m) 0.9144...
  • Page 17 UHF Analog Driver/Transmitter/Translator Chapter 1, Introduction ABBREVIATIONS/ACRONYMS Alternating Current Printed circuit board Automatic Frequency Control Quadrature Amplitude Modulation Automatic Level Control Amplitude modulation Automatic Gain Control American wire gauge Bit Error Rate Bandwidth Direct Current Digital to analog Decibel Decibel referenced to 1 milliwatt dBmV Decibel referenced to 1 millivolt Decibel referenced to 1 watt...
  • Page 18 UHF Analog Driver/Transmitter/Translator Chapter 1, Introduction RETURN LOSS VS. VSWR 1.001 1.01 VSWR LX Series, Rev. 3 1-11...

  • Page 19: System Overview

    System Overview The LX Series can also be used as a driver for external power amplifiers. The The analog transmitters in the Innovator output power of the driver is determined LX Series are complete 10W to 100W by the level needed to attain the full UHF Analog internally diplexed modular output power of the transmitter.

  • Page 20: Optional) Exciter Switcher Tray

    UHF Analog Driver/Transmitter/ Chapter 2, System Description, Translator Maintenance & Remote Control Connections ASSEMBLY DESIGNATOR TRAY/ASSEMBLY NAME PART NUMBER Driver Amplifier Module, used in 1303771 (1kW) OR OR A6 high power transmitters 1303874 (2kW) Backplane Board, V2, LX Series 1304047 (Optional) Exciter Switcher Assembly 1305727 (110 VAC) OR...

  • Page 21: Receiver Front Panel Switch

    UHF Analog Driver/Transmitter/ Chapter 2, System Description, Translator Maintenance & Remote Control Connections external switching by placing jump er controls its own IF gain to make sure that the W11 on J29 between pins 1 & 2). IF output level is constant. There is also a provision to apply +12V to the The UHF Receiver converts a low level RF RF input center conductor to power an...

  • Page 22: Modulator Front Panel Switch

    UHF Analog Driver/Transmitter/ Chapter 2, System Description, Translator Maintenance & Remote Control Connections 2.1.2 (A2) Modulator Module removing the low to TB31-Pin 3 located Assembly (1301929; Appendix B) on the rear of the exciter/driver assembly. By connecting the low, the NOTE: The Modulator module may not Modulator IF output is used by the IF be present in a translator system or in a...

  • Page 23: If Processor Module

    UHF Analog Driver/Transmitter/ Chapter 2, System Description, Translator Maintenance & Remote Control Connections OVER MOD When lit it indicates the Video input level is too high. DS3 (Red) ALT IF When lit it indicates that external or alternate 4.5MHZ is present. DS7 (Green) 10 MHz PRES When lit it indicates that a 10MHz reference is present to the...

  • Page 24: If Processor Front Panel Switch

    UHF Analog Driver/Transmitter/ Chapter 2, System Description, Translator Maintenance & Remote Control Connections module RF power level with the desired the RF power level control circuit is level and uses the IF Power Control PWM removed from use. When the ALC select line to correct for errors.
  • Page 25 UHF Analog Driver/Transmitter/ Chapter 2, System Description, Translator Maintenance & Remote Control Connections Table 2-12. IF Processor Front Panel Control Adjustments POTENTIOMETERS DESCRIPTION FREQUENCY These three variable resistors, R103, R106 & R274, adjust the RESPONSE depth of gain for the three stages of frequency response correction. EQUALIZER Adjusts the gain of the transmitter when the transmitter is in the ALC GAIN...

  • Page 26: Vhf/Uhf Upconverter Front Panel Switch

    UHF Analog Driver/Transmitter/ Chapter 2, System Description, Translator Maintenance & Remote Control Connections resulting signal is amplified and applied controlled by an Automatic Gain Control to a Pin diode attenuator before it is circuit, which maintains a constant connected to the output of the power out of the upconverter, and also upconverter.
  • Page 27 UHF Analog Driver/Transmitter/ Chapter 2, System Description, Translator Maintenance & Remote Control Connections 2.1.5 (A4) Control/Power Supply The (A4) Control & Monitoring/Power Module Assembly (110 VAC, Supply Assembly is configured at the 1301936 or 220 VAC, 1303229; factory for operation at 110 VAC or 220 Appendix B) VAC.

  • Page 28: Control & Monitoring/Power Supply Module

    UHF Analog Driver/Transmitter/ Chapter 2, System Description, Translator Maintenance & Remote Control Connections 2.1.6 (A6) Exciter Power Amplifier Power Amplifier module are routed Module in 10-100W Transmitter or through the floating blind-mate driver in systems above 2kW connector of the Control & (1303770;...
  • Page 29 UHF Analog Driver/Transmitter/ Chapter 2, System Description, Translator Maintenance & Remote Control Connections 100 Watts analog, system power is system over-drive condition is detected monitored by an external module that is when this value rises above 0.9 VDC. connected to TB31 and control board When an over-drive condition is SW1 switches must be set off.
  • Page 30 UHF Analog Driver/Transmitter/ Chapter 2, System Description, Translator Maintenance & Remote Control Connections 2.1.6.1 (A6) Driver Amplifier Module Assembly {1303771(1kW) or The Driver Power Amplifier module and 1303874(2kW)}; Appendix B) any External Amplifier modules contain the same control and monitoring board. This board monitors RF output power, RF reflected power, the current draw of amplifier sections, the supply voltage,...
  • Page 31 UHF Analog Driver/Transmitter/ Chapter 2, System Description, Translator Maintenance & Remote Control Connections power greater than 100 Watts, system system over-drive condition is detected power is monitored by an external when this value rises above 0.9 VDC. module that is connected to TB31. In When an over-drive condition is this configuration switches SW1 on the detected, the Upconverter module...

  • Page 32: Rf Output Assemblies

    UHF Analog Driver/Transmitter/ Chapter 2, System Description, Translator Maintenance & Remote Control Connections 2.1.7 RF Output Assemblies front panel is lit and the DC OK on the front panel should also be green. The The RF output from the exciter power enable and DC OK indicators on the PA amplifier is at the RF output jack, an “N”...
  • Page 33 UHF Analog Driver/Transmitter/ Chapter 2, System Description, Translator Maintenance & Remote Control Connections the transmitter. This condition is the The standby mode in the transmitter result of a fault that causes the firmware indicates that the output amplifier of the to hold the IF Processor module in a transmitter is disabled.

  • Page 34: Uhf Television Frequencies

    UHF Analog Driver/Transmitter/ Chapter 2, System Description, Translator Maintenance & Remote Control Connections Table 2-27: UHF Television Frequencies CENTER CENTER + Offset - Offset + Offset - Offset FREQUENCY FREQUENCY 473 MHz 473.01 472.99 641 MHz 641.01 640.99 479 MHz 479.01 478.99 647 MHz...

  • Page 35: Maintenance

    2.4 Maintenance will not damage components or the silk- screened markings on the modules and The Innovator LX Series boards. Water-based cleaners can be Driver/Transmitter/translator is designed used, but do not saturate the with components that require little or no components.

  • Page 36: Exciter/Driver Chassis Assembly Rear View

    UHF Analog Driver/Transmitter/ Chapter 2, System Description, Translator Maintenance & Remote Control Connections TB30 TB31 Figure 2-2. Exciter/Driver Chassis Assembly Rear View Table 2-28: LX Series Chassis Assembly Hard Wired Remote Interface Connections to TB30 or TB31, 18 pos. Terminal Blocks Located on the Rear of the Assembly Signal Name Signal Type/Description Designations...
  • Page 37 UHF Analog Driver/Transmitter/ Chapter 2, System Description, Translator Maintenance & Remote Control Connections Signal Name Signal Type/Description Designations Discrete Open Collector Input - A pull down to Transmitter TB30-6 ground on this line indicates that the transmitter is Operate to be placed into the operate mode. Discrete Open Collector Input - A pull down to TB30-7 Transmitter...
  • Page 38 UHF Analog Driver/Transmitter/ Chapter 2, System Description, Translator Maintenance & Remote Control Connections Signal Name Signal Type/Description Designations Auxiliary Analog Input (0 to 1V). This voltage is UC AGC #2 used by the Upconverter for gain control. Linear TB31-5 Voltage signal with display resolution of 0.01 %.

  • Page 39: Chapter 3 Site Considerations, Installation And Setup Procedures

    The to be taken into account before the environment in which they are placed is Innovator LX Series analog important and certain precautions must driver/transmitter can be installed. For be taken. The three greatest dangers to...
  • Page 40 UHF Analog Driver/Transmitter/ Chapter 3, Site Considerations, Translator Installation and Setup Procedures rarely if ever attainable in the real world. preferred method and is the only way to However, the closer the environment is to create anything close to an ideal this design, the greater the operating environment.
  • Page 41 UHF Analog Driver/Transmitter/ Chapter 3, Site Considerations, Translator Installation and Setup Procedures thought of air conditioning only the complete flushing of heated air front of the unit. Cooling air is with no stagnant areas. drawn in at the front of all transmitters and in the front and The filter area must be large back of others.

  • Page 42: Kw Minimum Ventilation Configuration

    5000 watts. If the load is known in BTUs, Axcera can be contacted at (724) 873- 2000 CFM into ½ inch of water will be 8100. required for each 17,000 BTUs. The inlet filter must be a minimum of seven square Figure 3-1.

  • Page 43: Unpacking The Chassis W/Modules, Bandpass And Trap Filters

    6/32” x ½” be directed to the carrier. Inform Axcera Philips screw, mounted between the two as to the extent of any damage as soon connectors, needs to be removed before as possible.

  • Page 44: Ac Input

    UHF Analog Driver/Transmitter/ Chapter 3, Site Considerations, Translator Installation and Setup Procedures AC Input Box Bandpass Filter Output to Trap Filter Antenna Low Power High Power w/Cabinet Connect the bandpass filter and trap filter 3.4 AC Input to the output of the chassis assembly. Connect the transmission line for the Once the chassis and output connections antenna system to the output of the trap...

  • Page 45: Setup And Operation

    UHF Analog Driver/Transmitter/ Chapter 3, Site Considerations, Translator Installation and Setup Procedures NOTES: The transmitter is factory set television transmitter. Refer to the setup for either 110 VAC or 220 VAC and operation procedures that follow operation as directed by customer. before applying power to the transmitter.

  • Page 46: Rear View Of Lx Series Analog Transmitter

    UHF Analog Driver/Transmitter/ Chapter 3, Site Considerations, Translator Installation and Setup Procedures Figure 3-4: Rear View of LX Series Analog Transmitter TB02 TB30 TB31 SPARE SPARE Table 3-3: Rear Chassis Connections for the LX Series Analog Transmitter. Port Type Function Impedance AC Input TB02...

  • Page 47: Initial Turn On

    UHF Analog Driver/Transmitter/ Chapter 3, Site Considerations, Translator Installation and Setup Procedures Port Type Function Impedance RJ-45 SCADA (Input / Loop-Thru) CAT5 RJ-45 SCADA (Input / Loop-Thru) CAT5 RJ-45 System RS-485 Serial CAT5 3.5.2 Initial Turn On ALC FLT: This illuminates Red when the ALC can not maintain output level.

  • Page 48: If Processor Module Leds On Front Panel

    UHF Analog Driver/Transmitter/ Chapter 3, Site Considerations, Translator Installation and Setup Procedures 3.5.2.3 IF Processor Module LEDs on Front Panel 3.5.2.6 Power Amplifier or Driver Module LEDs on Front Panel Fault Indicators: NOTE: Both the PA Module and INPUT FAULT: This illuminates Red if Driver Module have the same front the input to the module is missing or panel LEDs.

  • Page 49: Menu 02 Splash Screen #2

    Main Screen. The Name, 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. Table 3-6: Menu 03 – Exciter Switcher Control Screen This screen indicates that the exciter switcher is in automatic back-up and that Exciter A is selected as the On Air Exciter.
  • Page 50 UHF Analog Driver/Transmitter/ Chapter 3, Site Considerations, Translator Installation and Setup Procedures Table 3-9: Menu 06 – Exciter Switcher Control Screen This screen allows you to cancel the automatic back-up and that Exciter B is selected as the On Air Exciter. Table 3-10: Menu 07 –...

  • Page 51: Front Panel Screens For The Exciter/Amplifier Chassis Assembly

    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. Table 3-16: Menu 10 - Main Screen: This is the default main screen of the transmitter.

  • Page 52: Menu 11 Error List Access Screen

    UHF Analog Driver/Transmitter/ Chapter 3, Site Considerations, Translator Installation and Setup Procedures Table 3-17: Menu 11 - Error List Access Screen This screen of the transmitter shows the current number of errors, displayed in upper, right of screen (0), and provides operator access to view Menu 20, the error list screens, by pushing the ENT button.

  • Page 53: Menu 30 Transmitter Device Details Screen

    UHF Analog Driver/Transmitter/ Chapter 3, Site Considerations, Translator Installation and Setup Procedures Menu 30 is entered by selecting ENT at Menu 12, Table 3-8. Table 3-21: Menu 30 - Transmitter Device Details Screen This screen allows access to the transmitter parameters of installed devices. The system is configured to know which devices are present.

  • Page 54: Menu 40 Authorized Personnel Screen

    UHF Analog Driver/Transmitter/ Chapter 3, Site Considerations, Translator Installation and Setup Procedures System Parameter Normal Faulted (Blinking) Component AFC 1 LEVEL 0 – 5.00 V AFC 2 LEVEL 0 - 5.00 V PLL 1 CIRCUIT LOCKED FAULT Upconverter PLL 2 CIRCUIT LOCKED FAULT Details...

  • Page 55: Menu 40-1 Transmitter Set Up: Power Raise/Lower Screen

    UHF Analog Driver/Transmitter/ Chapter 3, Site Considerations, Translator Installation and Setup Procedures 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 2.5 and above. If a change is made to a screen within the Set Up Menus, when you go to the next menu, a new screen asks if you accept the change or want to return to the previous menu to reconsider the changes made.

  • Page 56: Menu 40-3 Transmitter Set Up: Receiver Channel Configuration

    UHF Analog Driver/Transmitter/ Chapter 3, Site Considerations, Translator Installation and Setup Procedures Table 3-27: Menu 40-3 - Transmitter Set-up: Receiver Channel Configuration ↓ ↑ > This screen of the transmitter allows access to transmitter frequency set-up parameters. The choices of this screen are as follow. NOTE: The above screen will only be present if a Receiver is part of the system.
  • Page 57 UHF Analog Driver/Transmitter/ Chapter 3, Site Considerations, Translator Installation and Setup Procedures Table 3-31: Menu 40-7 - Transmitter Set-up: System Visual Power Calibration This screen is used to adjust the calibration of the system's visual power. A symbol placed under the '6' character is used to show major changes in the calibration value. When the calibration value is at full value, the character will be full black.
  • Page 58 UHF Analog Driver/Transmitter/ Chapter 3, Site Considerations, Translator Installation and Setup Procedures Table 3-35: Menu 40-11 - Transmitter Set-up: Aural Deviation Calibration In analog systems this screen is used to adjust the calibration of the system's aural deviation detector. The calibration value symbol is again used to graphically represent the aural deviation detector's calibration value.
  • Page 59 UHF Analog Driver/Transmitter/ Chapter 3, Site Considerations, Translator Installation and Setup Procedures Table 3-39: Menu 40-15 - Transmitter Set-up: Auto Stand-By Control Certain LX transmitter locations are required to reduce to no output power on the loss of video input. When a LX transmitter is configured for Auto Stand-By On Modulation Loss, the transmitter will switch to stand-by, if a modulated input signal fault is detected by the IF Processor module that lasts for more than ten seconds.

  • Page 60: Operation Procedure

    UHF Analog Driver/Transmitter/ Chapter 3, Site Considerations, Translator Installation and Setup Procedures Table 3-43: Menu 40-19 - Transmitter Set-up: Remote Commands Control This screen is used to allow or deny the use of remote control commands. When disabled, remote commands are not used. Remote commands are commands received either through the rear terminal blocks or through serial messages.

  • Page 61: Chapter 4 Circuit Descriptions

    UHF Analog Driver/Transmitter/ Chapter 4, Circuit Descriptions Translator Chapter 4 Circuit Descriptions 4.0 (Optional) Exciter Switcher Tray, 4.1 (A1) Receiver Module (1304002; (110 VAC 1305727 or 220 VAC Appendix B) 1305715); Appendix B) NOTE: Not present in a transmitter NOTE: Part of a dual exciter system. system.

  • Page 62: Uhf Mixer/Pll Board

    UHF Analog Driver/Transmitter/ Chapter 4, Circuit Descriptions Translator U1, CR4 and its associated components, There are two jumpers on J3 and J4 that varies the gain of the pin attenuator on allow the user to switch in a 10 dB the front end of the board to maintain a attenuator if the input level to the receiver constant output level.

  • Page 63: Analog Modulator Board

    UHF Analog Driver/Transmitter/ Chapter 4, Circuit Descriptions Translator jumper W1 on J2 to the Bias off 0 dBm, the mini-jumper should be in the position, between pins 2 & 3, to high gain position between pins 1 and 2 of prevent possible damage to the test jack J23.

  • Page 64: Phase Lock Loop (Pll) Circuit

    UHF Analog Driver/Transmitter/ Chapter 4, Circuit Descriptions Translator input matching impedance of 75Ω that and through the Jumper W4 on J5 pins 1 & can be eliminated by removing the 2, “J”, to the I input of the mixer Z1. jumper W15 from pins 1 and 2 on J28.

  • Page 65: Delay Equalizer Circuits

    UHF Analog Driver/Transmitter/ Chapter 4, Circuit Descriptions Translator the circuitry that generates an readjusted without the proper equipment. amplitude-modulated vestigial sideband visual IF signal output that is made up of Resistors R53, R63, R61, and R58 adjust the baseband video input signal (.5 to 1 the sharpness of the response curve while Vpk-pk) modulated onto a 45.75 MHz IF inductors GD1, GD2, GD3, and GD4 adjust...

  • Page 66: Main Video Signal Path (Part 2 Of 2)

    UHF Analog Driver/Transmitter/ Chapter 4, Circuit Descriptions Translator in manual position, between pins 1 and 2, the adjustable resistor R67 provides The +12 VDC needed to operate the oven the manual clamp bias adjustment for is applied through jack J30 pin 1 on the the video that connects to U5C.

  • Page 67: Visual Modulator Circuit

    UHF Analog Driver/Transmitter/ Chapter 4, Circuit Descriptions Translator for offset and precise frequency 45.74 or the board. The modulated visual IF 45.76 MHz, connects to the board. through J13 connects to J41C pin 17C the Visual IF Output of the board. The external IF CW Input connects at J41A pin 32A and is connected to J19 and 4.2.1.12 Aural Modulator Circuit...

  • Page 68: Voltage Requirements

    UHF Analog Driver/Transmitter/ Chapter 4, Circuit Descriptions Translator summing circuit at the common signal. The ALC adjusts the level of the IF connection of L17 and L16. signal that controls the output power of the transmitter. The Aural IF and Visual IF signals are combined through L16 and L17.

  • Page 69: Main If Signal Path (Part 1 Of 3)

    UHF Analog Driver/Transmitter/ Chapter 4, Circuit Descriptions Translator 4.3.1.3 Main IF Signal Path (Part 1 of 3) ALC, input loss cutback, and the threshold detector circuits will only operate when The selected IF input (-6 dBm average) jumper W2 on jack J5 is in the Enabled signal is split, with one half entering a position, between pins 2 and 3.

  • Page 70: Pin-Diode Attenuator Circuit

    UHF Analog Driver/Transmitter/ Chapter 4, Circuit Descriptions Translator level increases, until normal output attenuator circuit, CR1, CR2 & CR3. The power is reached. low reverse biases them and cuts back the level of the output to approximately 25%. The input level at TP3 is also fed to a pulse detector circuit, consisting of IC U8, 4.3.1.5 Pin-Diode Attenuator Circuit CR17, Q3, and associated components,...

  • Page 71: Main If Signal Path (Part 2 Of 3)

    UHF Analog Driver/Transmitter/ Chapter 4, Circuit Descriptions Translator +12 VDC line, and through R5, CR1, temperature compensates for the two CR2, and R9, biases series element CR3 diodes in each corrector stage. off and shunt elements, diodes CR1 and CR2, on, causing them to act as relatively The first corrector stage in the In Phase low-value resistors.

  • Page 72: Alc Circuit

    UHF Analog Driver/Transmitter/ Chapter 4, Circuit Descriptions Translator all of the breakpoints past the signal used to adjust the frequency position of peaks so that they will have no affect. the notches. These are adjusted as needed to compensate for frequency The pre-distorted IF signal in the In response problems.

  • Page 73: Fault Command

    UHF Analog Driver/Transmitter/ Chapter 4, Circuit Descriptions Translator 8 power raise and TB30-9 power lower, on the rear of the exciter/amplifier 4.3.1.10 Fault Command chassis. The ALC voltage is set for .8 VDC at TP4 with a 0-dBm output at J42C The board also has circuitry for an external pin 1C of the module.

  • Page 74: Downconverter Board

    UHF Analog Driver/Transmitter/ Chapter 4, Circuit Descriptions Translator temperature compensates for the two 4.4.2 (A2) L-Band PLL Board diodes in each corrector stage. (1303846; Appendix B) This board generates an LO at a frequency 4.4 (A5) VHF/UHF Upconverter of 1.1-1.9 GHz. The board contains a PLL Module (1303829;...

  • Page 75: First Conversion Board

    UHF Analog Driver/Transmitter/ Chapter 4, Circuit Descriptions Translator rejection mixer consisting of U1, U2, U3 switched to the external 10 MHz reference and U6. The 44 MHz IF input is whenever it is present. The LED DS1 connected to the board at J2, and then illuminates whenever the internal 10 MHz to the image rejection mixer.

  • Page 76: Control Monitoring/Power Supply Module

    Board (1527-1406) and (A5) a LCD 4.5.1.1 +12 VDC Circuits Display. +12 VDC from the Switching Power AC Input to Innovator LX Exciter/Amplifier Supply Assembly connects to J6 on the Chassis Assembly board. The +12 VDC is divided into four...

  • Page 77: Schematic

    UHF Analog Driver/Transmitter/ Chapter 4, Circuit Descriptions Translator The -12 VDC is divided into two separate voltage is less the 4.21 VDC; (1.25 VDC < circuits each with a 3 amp self resetting Pin 4 (IN) < Pin 2 (Vcc). The watchdog fuse, PS1 and PS2.

  • Page 78: Schematic

    UHF Analog Driver/Transmitter/ Chapter 4, Circuit Descriptions Translator Digital output latch circuits are used to signals voltage, to prevent damage to the control system devices. Remote output IC. Most signals are calibrated at their circuits are implemented using open source, however two dual serial drain FETs, Q13, Q14, Q16, and Q17, potentiometers ICs are used to calibrate with greater than 60 Volt drain to source...

  • Page 79: Switch Board

    UHF Analog Driver/Transmitter/ Chapter 4, Circuit Descriptions Translator This occurs for each push button. Refer to With the LED control line HIGH, the Chapter 3 Section 3.5.3, for more MOSFET is On, which causes the base of information on the Display Menu Screens. the transistor go toward ground potential, reverse biasing the transistor.

  • Page 80: Watt Uhf Amplifier Board

    UHF Analog Driver/Transmitter/ Chapter 4, Circuit Descriptions Translator The RF from the Upconverter Module The drain voltage needed to operate each Assembly connects from the Upconverter HFET is obtained from the +12 VDC line RF Output BNC Jack J23, through a cable, that connects to the board at J5 and is to the PA RF Input BNC Jack J24, located regulated down to +8.25 volts by U4.
  • Page 81 UHF Analog Driver/Transmitter/ Chapter 4, Circuit Descriptions Translator V 804 3 dB Coupler 3 dB Coupler Z 802 Z 803 Output R 802, ..4, ..5 3 dB Coupler Z 801 Input V 810 R 814 V 811 V 805 C 800 C 819 R 838 X 801...
  • Page 82 UHF Analog Driver/Transmitter/ Chapter 4, Circuit Descriptions Translator terminations, used as dissipation loads, connect to the reject and reflected ports, U6 is a serial to RS-485 driver IC. U7 is a J5 and J4, of the coupler. watchdog IC used to hold the microprocessor in reset, if the supply 4.6.6 (A5) Amplifier Control Board voltage is less than 4.21 VDC.
  • Page 83 UHF Analog Driver/Transmitter/ Chapter 4, Circuit Descriptions Translator to provide gate voltage to Q10 that is 5 These components allow for short duration volts greater than the source pin of this high current loading of the supply. By FET. The gate of Q10 can be turned Off measuring the current through the sense by any one of a few different circuits.

  • Page 84: Watt Uhf Amplifier Board

    UHF Analog Driver/Transmitter/ Chapter 4, Circuit Descriptions Translator A Reflected Power Sample enters the 4.7 (A4) Driver Amplifier Module board at SMA Jack J5 and is detected by Assembly {1303771(1kW) or CR20 and the DC level amplified by 1303874(2kW); Appendix B} U28B.

  • Page 85: Watt Uhf Amplifier Module

    UHF Analog Driver/Transmitter/ Chapter 4, Circuit Descriptions Translator a 1kW system with an input signal of +6 devices. Each HFET has approximately 14 dBm at J1 of the assembly, an output of dB of gain. The drain voltage needed to +23 dBm can be expected at J2.
  • Page 86 UHF Analog Driver/Transmitter/ Chapter 4, Circuit Descriptions Translator 4.7.3 (A2) 40 Watt UHF Amplifier delivering an output power of 70 W Assembly (1304490; Appendix B) The amplification is approximately 12 dB. (NOTE: Used in 1kW Systems) With a typical input of +27dBm an output of +39dBm is expected.

  • Page 87: Schematic

    UHF Analog Driver/Transmitter/ Chapter 4, Circuit Descriptions Translator following functions: overdrive cutback, when the drive level reaches the amount Upper left corner U3 is used to determine needed to attain 110% output power; where the amplifier control board is and overtemperature, VSWR, and located.

  • Page 88: Current Monitoring Sections Of The Board

    UHF Analog Driver/Transmitter/ Chapter 4, Circuit Descriptions Translator At 0.886 VDC the current to amplifier #1 without the additional four 30.1 O 1% should be greater than 5 Amps. U11B is resistors. For very short duration pulses, a used to turn off the Q10 FET, if high 1206 resistor can handle up to 60 watts.
  • Page 89 UHF Analog Driver/Transmitter/ Chapter 4, Circuit Descriptions Translator output of U28B at pin 7 is connected is used in high power transmitters with through the reflected calibration pot external PA assemblies. R163 to U28C. The output is split with one part connected to J9 pin 5, the The RF output of the driver amplifier Reflected Power Output level of the module assembly connects to the output of...

  • Page 90: Chapter 5 Detailed Alignment Procedures

    The failed module can then be sent back to Axcera for repair. Contact Note: Each Module has an assigned slot Axcera Customer Service Department at and will not fit properly or operate in the 724-873-8100 or fax to 724-873-8105, incorrect slot.

  • Page 91: Lx Series Exciter/Amplifier Chassis Assembly

    UHF Analog Driver/Transmitter/ Chapter 5, Detailed Alignment Procedures Translator factory with the readings on each of the Verify that all LEDs located on the front modules. The readings should be very panel of the Receiver are Green. The similar. If a reading is way off, the following details the meaning of each problem is likely to be in that module.

  • Page 92: If Processor Module Assembly

    UHF Analog Driver/Transmitter/ Chapter 5, Detailed Alignment Procedures Translator VISUAL UNLOCK (DS6) – Red the ±25 kHz deviation on the front panel Indicates that the Nominal 45.75 MHz screen. visual IF is unlocked from the 10 MHz reference. STEREO SET UP: The modulator was factory set for a ±75 kHz deviation with a AUDIO OVER DEVIATION (DS4) –...

  • Page 93: Setting Up The Drive Level Of The Transmitter Procedure

    UHF Analog Driver/Transmitter/ Chapter 5, Detailed Alignment Procedures Translator 5.2.4 VHF/UHF Upconverter Module Setting the Auto AGC Assembly With the transmitter in Standby, preset Switch the transmitter to Operate. Verify the AGC pot on the Upconverter full that all LEDs located on the front panel of Counterclockwise.

  • Page 94: Linearity Correction Adjustment

    UHF Analog Driver/Transmitter/ Chapter 5, Detailed Alignment Procedures Translator channel that the upconverter is on. The Enable position, on pins 2 & 3. This is channel number should be blinking. the normal operating position. To change the channel, hit the + button Set up a spectrum analyzer with to step through the channels until the 100 kHz resolution bandwidth and...

  • Page 95: Frequency Response Delay Equalization Adjustment

    UHF Analog Driver/Transmitter/ Chapter 5, Detailed Alignment Procedures Translator 5.2.8 Frequency Response Delay no aural present by removing the aural Equalization Adjustment IF carrier jumper on the back of the chassis assembly. Connect a sync and NOTE: Perform the following procedure black test signal to the video input jack only if a frequency response delay of the test modulator.
  • Page 96 See Table 5-1 for typical bandpass network analyzer. If tuning is thought to values. be required, consult with the Axcera Field Table 5-1. Typical Bandpass Values FREQUENCY INSERTION LOSS (dB) RETURN LOSS (dB) -4.5...

  • Page 97: Uhf Trap Filter Assembly

    UHF Analog Driver/Transmitter/ Chapter 5, Detailed Alignment Procedures Translator Figure 5-2. Bandpass Filter 5.4 (A10) UHF Trap Filter Assembly to Tune the Notch Frequency. The Depth of the Notch is set by the gap The Traps on the output Trap Filter are between the Center Conductor of the labeled with their Center Frequency Trap Section and the Center Conductor...

  • Page 98: Effects Of Tuning The Output Trap Filter

    10 dB. must be in manual. This completes the detailed alignment procedures for the LX Series transmitter. If a problem occurred during the alignment, help is available by calling Axcera field support at (724) 873-8100. LX Series, Rev. 3...
  • Page 99 APPENDIX A LX SERIES ANALOG SYSTEM SPECIFICATIONS...
  • Page 101 * For transmitters use “T” suffix, translators use “L” suffix (ex. LU100AT - 100W Transmitter) 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.
  • Page 102 APPENDIX B DRAWINGS AND PARTS LISTS...
  • Page 103 UHF Analog Driver/Transmitter Appendix B Drawings and Parts Lists Innovator LX Series Analog System LX Series 10W to 100W System Block Diagram........1302139 Chassis Assembly, 110 VAC Exciter, V2, LX Series Interconnect.................1304064 OR Chassis Assembly, 220 VAC Exciter, V2, LX Series Interconnect.................1304064...
  • Page 104 UHF Analog Driver/Transmitter Appendix B Drawings and Parts Lists Power Amplifier Assembly, (Used as the final PA in 10-100 Watt Systems or as the Driver PA in Systems above 2kW) (The Driver PA Assemb ly 1303771 is used in 1kW Systems or the Driver PA Assembly 1303874 is used in 2kW Systems) Block Diagram................1303850 Interconnect.................1303814...
  • Page 105 APPENDIX C TRANSMITTER LOG SHEET...
  • Page 106 UHF LX Series Driver/Transmitter/Translator Appendix C, Log Sheet DUAL EXCITER OPTION EXCITER A SELECTED AS THE ON AIR EXCITER DESCRIPTION OF TRANSMITTER READING FROM EXCITER A PARAMETER LCD DISPLAY Model Number Code Version Firmware Number OUTPUT MEASUREMENTS % VISUAL POWER % AURAL POWER RECEIVER DETAILS NOT USED WITH TRANSMITTER...
  • Page 107 UHF LX Series Driver/Transmitter/Translator Appendix C, Log Sheet DESCRIPTION OF TRANSMITTER READING FROM EXCITER A PARAMETER LCD DISPLAY 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 TEMPERATURE CODE VERSION...
  • Page 108 UHF LX Series Driver/Transmitter/Translator Appendix C, Log Sheet DESCRIPTION OF TRANSMITTER READING FROM EXCITER A PARAMETER LCD DISPLAY 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 109 UHF LX Series Driver/Transmitter/Translator Appendix C, Log Sheet DESCRIPTION OF TRANSMITTER READING FROM EXCITER A PARAMETER LCD DISPLAY 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 110 UHF LX Series Driver/Transmitter/Translator Appendix C, Log Sheet DESCRIPTION OF TRANSMITTER READING FROM EXCITER A PARAMETER LCD DISPLAY 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 111 UHF LX Series Driver/Transmitter/Translator Appendix C, Log Sheet DESCRIPTION OF TRANSMITTER READING FROM EXCITER A PARAMETER LCD DISPLAY 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 112 UHF LX Series Driver/Transmitter/Translator Appendix C, Log Sheet DESCRIPTION OF TRANSMITTER READING FROM EXCITER A PARAMETER LCD DISPLAY 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 113 UHF LX Series Driver/Transmitter/Translator Appendix C, Log Sheet DESCRIPTION OF TRANSMITTER READING FROM EXCITER A PARAMETER LCD DISPLAY 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...
  • Page 114 UHF LX Series Driver/Transmitter/Translator Appendix C, Log Sheet DUAL EXCITER OPTION EXCITER B SELECTED AS THE ON AIR EXCITER DESCRIPTION OF TRANSMITTER READING FROM EXCITER B PARAMETER LCD DISPLAY Model Number Code Version Firmware Number OUTPUT MEASUREMENTS % VISUAL POWER % AURAL POWER RECEIVER DETAILS NOT USED WITH TRANSMITTER...
  • Page 115 UHF LX Series Driver/Transmitter/Translator Appendix C, Log Sheet DESCRIPTION OF TRANSMITTER READING FROM EXCITER B PARAMETER LCD DISPLAY 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 TEMPERATURE CODE VERSION...
  • Page 116 UHF LX Series Driver/Transmitter/Translator Appendix C, Log Sheet DESCRIPTION OF TRANSMITTER READING FROM EXCITER B PARAMETER LCD DISPLAY 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 117 UHF LX Series Driver/Transmitter/Translator Appendix C, Log Sheet DESCRIPTION OF TRANSMITTER READING FROM EXCITER B PARAMETER LCD DISPLAY 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 118 UHF LX Series Driver/Transmitter/Translator Appendix C, Log Sheet DESCRIPTION OF TRANSMITTER READING FROM EXCITER B PARAMETER LCD DISPLAY 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 119 UHF LX Series Driver/Transmitter/Translator Appendix C, Log Sheet DESCRIPTION OF TRANSMITTER READING FROM EXCITER B PARAMETER LCD DISPLAY 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 120 UHF LX Series Driver/Transmitter/Translator Appendix C, Log Sheet DESCRIPTION OF TRANSMITTER READING FROM EXCITER B PARAMETER LCD DISPLAY 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 121 UHF LX Series Driver/Transmitter/Translator Appendix C, Log Sheet DESCRIPTION OF TRANSMITTER READING FROM EXCITER B PARAMETER LCD DISPLAY 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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