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Axcera INNOVATOR LX SERIES Instruction Manual

Uhf analog driver/uhf translator
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INSTRUCTION MANUAL
INNOVATOR LX SERIES
UHF ANALOG DRIVER/UHF 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/UHF 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

    1.3 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 Receiver Tray ................ 2-2 2.1.2 IF Processor Module ..............
  • Page 3 5.1.12 IF Filter/Limiter Board............5-4 5.1.13 IF PLL Board (Optional) ............5-4 5.1.14 IF Amplifier Board, High Gain (Optional) ........5-5 5.2 Innovator LX Series Exciter/Amplifier Chassis Assembly ......5-6 5.2.1 Linearity Correction Adjustment ..........5-6 5.2.2 Frequency Response Delay Equalization Adjustment ...... 5-7 5.2.3 Calibration of Output Power and Reflected Power......
  • Page 4 1 kW Minimum Ventilation Configuration ........3-4 Tray Slide Cabinet Mounting Diagram........... 3-5 Front and Rear View Reconnection Drawing ........3-6 Rear View of Innovator LX Series UHF Translator ......3-7 Typical Red Field Spectrum............5-7 LX Series, Rev. 0...
  • Page 5 Table of Contents LIST OF TABLES TABLE PAGE 10-100W Innovator LX Series Translator Assemblies and Tray... 2-1 Receiver Samples ..............2-2 IF Processor Front Panel Switch........... 2-4 IF Processor Front Panel Status Indicators ........2-4 IF Processor Front Panel Control Adjustments......... 2-4 IF Processor Front Panel Sample ..........

  • Page 6: Chapter 1 Introduction

    The UHF translators manufactured by chapter, before you begin to install or Axcera are designed to be easy to use operate the unit. and repair while providing protection from electrical and mechanical hazards.

  • Page 7: Maintenance

    1.4 Maintenance Material Return Authorization Number (MRA#). The Innovator LX Series Translator is designed with components that require An MRA# can be obtained from any little or no periodic maintenance except Axcera Field Service Engineer by...

  • Page 8: Limited One-Year Warranty For Axcera Products

    (a) repairing or replacing Department. (in Axcera's sole discretion) any defective parts free of charge (F.O.B. Axcera can also be contacted through e- Axcera’s plant) and/or (b) crediting (in mail at info@axcera.com and on the Axcera's sole discretion) all or a portion Web at www.axcera.com.
  • Page 9 Analog UHF Driver/Translator Chapter 1, Introduction F F WARNING!!! × × HIGH VOLTAGE Ø 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 10 Analog UHF Driver/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 11 Analog UHF Driver/Translator Chapter 1, Introduction Note: Because of possible FCC assigned offset, check for the assigned Carrier Frequency as written on License. UHF Channels NTSC Standard IF, 45.75 MHz L.O. Visual Carrier Frequency (MHz) Crystal Frequency (MHz) (MHz) Channel Nominal Minus Plus...
  • Page 12 Analog UHF Driver/Translator Chapter 1, Introduction Note: Because of possible FCC assigned offset, check for the assigned Carrier Frequency as written on License. UHF Channels NTSC Standard IF, 45.75 MHz L.O. Visual Carrier Frequency (MHz) Crystal Frequency (MHz) (MHz) Channel Nominal Minus Plus...
  • Page 13 Analog UHF Driver/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 Analog UHF Driver/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 Analog UHF Driver/Translator Chapter 1, Introduction dBm, dBw, dBmV, dBµ µ V, & VOLTAGE EXPRESSED IN WATTS 50 Ohm System WATTS PREFIX dBmV VOLTAGE dBµV 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...
  • Page 16 Analog UHF Driver/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 Analog UHF Driver/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 Analog UHF Driver/Translator Chapter 1, Introduction RETURN LOSS VS. VSWR 1.001 1.01 VSWR LX Series, Rev. 0 1-13...

  • Page 19: Chapter 2 System Description & Remote Control Connections

    1 to 10 watts at an the translator are listed in Table 2-1. A/V ratio of 10dB, 10% sound or .5 to 5 watts at 13 dB, 5% sound. Table 2-1: Innovator LX Series Translator Trays and Assemblies IF Processor Controller/ Module...

  • Page 20: Receiver Tray

    Analog UHF Driver/Translator Chapter 2, System Description & Remote Control Connections 2.1.1 8 Receiver Tray (1265-1100; The Receiver Tray receives a VHF or UHF Appendix B) Channel input at Jack (J1) and converts it to an internally diplexed Visual + Aural IF Output (+0 dBm) at J4.
  • Page 21 Analog UHF Driver/Translator Chapter 2, System Description & Remote Control Connections 2.1.2 (A3) IF Processor Module (full off) and 105% (full power plus). A Assembly (1301938; Appendix B) front panel IF Processor module potentiometer sets the upper limit of RF power at 120%.

  • Page 22: If Processor Front Panel Switch

    Analog UHF Driver/Translator Chapter 2, System Description & Remote Control Connections reported on the Control Monitoring automatically Mutes the translator. The board. When the IF Processor board system controller does not Mute on an detects an Input Signal fault it IF Processor Input fault.

  • Page 23: Lo/Upconverter Module

    Analog UHF Driver/Translator Chapter 2, System Description & Remote Control Connections 2.1.3 (A5) LO/Upconverter Module Upconverter module potentiometer. Assembly, Digital (1301954; When an over-drive condition is Appendix B) detected, the Upconverter module reduces its RF output level. For values less than 0.9 VDC, the Upconverter uses the AGC #1 voltage for automatic gain control by setting it's RF output to maintain AGC #1 equal to the AGC...

  • Page 24: Lo/Upconverter Front Panel Switch

    Analog UHF Driver/Translator Chapter 2, System Description & Remote Control Connections port is sent to the Modulator module, if / 5 kHz. The maximum LO frequency present, and the other is routed to a setting with these parameters is BNC connector (J11) on the backplane 1310.715 MHz.

  • Page 25: Control & Monitoring/Power Supply Module

    Analog UHF Driver/Translator Chapter 2, System Description & Remote Control Connections 2.1.4 (A4) Control & Monitoring/ The (A4) Control & Monitoring/Power Power Supply Module Assembly Supply Assembly is made up of a Control (1301936; Appendix B) Board (1302021), a Power Protection Board (1302837) and a Switch Board (1527-1406).

  • Page 26: Power Amplifier Module

    Analog UHF Driver/Translator Chapter 2, System Description & Remote Control Connections 2.1.5 (A6) Power Amplifier Module The 50 Watt Translator/Exciter Driver Assembly, Exciter, 5W-50W Power Amplifier module and any Translator (1301923; Appendix B) 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 27: Rf Output Assemblies

    Analog UHF Driver/Translator Chapter 2, System Description & Remote Control Connections route these lines as the system's RF module is routed to the Upconverter power signals. In systems of output module as AGC #1. A system over- power greater than 50 Watts, system drive condition is detected when this power is monitored by an external value rises above 0.9 VDC.

  • Page 28: Front Panel Lcd Display Screen

    Analog UHF Driver/Translator Chapter 2, System Description & Remote Control Connections 2.2.1 Front Panel Display Screen 2.3.1 Principles of Operation A 4 x 20 display located on the front of Operating Modes the Control & Monitoring/Power Supply Module is used in the Innovator LX This translator is either operating or in translator for control of the operation standby mode.

  • Page 29: Vhf Television Frequencies

    Analog UHF Driver/Translator Chapter 2, System Description & Remote Control Connections There are several fault or interlock • A low on the Remote Translator conditions that may exist in the Stand-By line. translator that will prevent the translator • Depressing the “STB” key on from entering the operate mode.

  • Page 30: Customer Remote Connections

    Analog UHF Driver/Translator Chapter 2, System Description & Remote Control Connections FREQUENCY FREQUENCY FREQUENCY 530-536 MHz 674-680 MHz 812-818 MHz 536-542 MHz 680-686 MHz 818-824 MHz 542-548 MHz 686-692 MHz 824-830 MHz 548-554 MHz 692-698 MHz 830-836 MHz 554-560 MHz 698-704 MHz 836-842 MHz 560-566 MHz...
  • Page 31 Analog UHF Driver/Translator Chapter 2, System Description & Remote Control Connections Table 2-25: Innovator LX 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 RMT Translator Discrete Open Collector Output - A low indicates that...
  • Page 32 Analog UHF Driver/Translator Chapter 2, System Description & Remote Control Connections Signal Name Signal Type/Description Designations Analog Input - 0 to 1.00 V- This is the input of the System Reflect “System Reflected Power ” indicating the translator's TB31-13 Power reflected output power.
  • Page 33 Analog UHF Driver/Translator Chapter 2, System Description & Remote Control Connections J3 Remote Connections Table 2-26. Receiver Tray hard wired Remote Connections thru J3 a 15-pin, D-Connector located on the rear of the tray Signal Name Pin Designations Signal Type/Description ALC Voltage J3-3 ALC Voltage output...

  • Page 34: Chapter 3 Site Considerations, Installation And Setup Procedures

    However, the closer the environment is need to be taken into account before the to this design, the greater the operating Innovator LX Series translator can be capacity of the translator. installed. For example, if the installation is completed during cool weather, a heat-...
  • Page 35 Analog UHF Driver/Translator Chapter 3, Site Considerations, Installation and Setup Procedures Now that the amount of heat that must occur on, or worse in, the be removed is known, the next step is to translator. determine how to accomplish this. The options are air conditioning, ventilation, Do not separate the front of the or a combination of the two.
  • Page 36 Axcera can be contacted at (724) 873- water pressure at the required 8100 elevation. The free air delivery method must not be used.

  • Page 37: Kw Minimum Ventilation Configuration

    Inform Axcera as to the extent of any assembly; and output transmission line. damage as soon as possible. The chassis or cabinet in which it is...

  • Page 38: Tray Slide Cabinet Mounting Diagram

    Analog UHF Driver/Translator Chapter 3, Site Considerations, Installation and Setup Procedures Normally, the receiver tray mounts below Slides and slide the Tray into the cabinet. the Chassis assembly using Chassis Trak Slowly slide the Tray in and out to verify cabinet slides.

  • Page 39: Ac Input

    Tray. output. This completes the unpacking and 3.4 AC Input installation of the Innovator LX Series UHF television translator. Refer to the The Exciter/Amplifier chassis assembly setup and operation procedures that needs to be plugged into an AC outlet...

  • Page 40: Input Connections

    Table 3-1: Rear Chassis Connections for the Receiver Tray. Port TYPE Function RF Input AC Input 15-pin D Remote Connections IF Output Table 3-2: Rear Chassis Connections for the Innovator LX Series Driver/Translator. Port Type Function AC Input TB02 Term Base Band Audio Input Composite Audio Input...
  • Page 41 Analog UHF Driver/Translator Chapter 3, Site Considerations, Installation and Setup Procedures Port Type Function Video Loop-Thru (Isolated) Visual IF Loop-Thru Input Aural IF Loop-Thru Input Upconverter RF Output Power Amplifier RF Input Power Amplifier RF Output TB30 Term Remote Control & Monitoring TB31 Term Remote Control &...

  • Page 42: Front Panel Screens For The Exciter/Amplifier Chassis Assembly

    OPR screens for the system. The ↑ and ↓ menu appears. Display Menu Screens for the Innovator LX Series Translator Table 3-3: Menu 01 - Splash Screen #1 D O M W R E...

  • Page 43: Menu 12 Translator Device Data Access Screen

    Analog UHF Driver/Translator Chapter 3, Site Considerations, Installation and Setup Procedures Table 3-6: Menu 11 - Error List Access Screen R R O R R O R ↑ ↓ This screen of the translator shows the current number of errors and provides operator access to view the error list.
  • Page 44 Analog UHF Driver/Translator Chapter 3, Site Considerations, Installation and Setup Procedures This screen of the translator allows access to translator parameters of installed devices. The system must be configured for the translator to know which devices are expected to be present. Current values for all installed devices are shown.

  • Page 45: Translator Device Parameters

    Analog UHF Driver/Translator Chapter 3, Site Considerations, Installation and Setup Procedures Table 3-11: Translator Device Parameters System Component Parameter Normal Faulted (Blinking) PLL CIRCUIT LOCKED UNLOCKED OUTPUT LEVEL 0 - 200 IRE AURAL DEVIATION 0 - 125 kHz Modulator CW INPUT PRESENT NOT USED (Analog Systems)

  • Page 46: Menu 40 Translator Set Up: Power Raise/Lower Screen

    Analog UHF Driver/Translator Chapter 3, Site Considerations, Installation and Setup Procedures System Component Parameter Normal Faulted (Blinking) AMP CURRENT 3 xx.xA xx.xA AMP TEMPERATURE CODE VERSION Table 3-12: Menu 40 - Translator Set-up: Power Raise/Lower Screen A N S M I O W E R A I O W E...

  • Page 47: Menu 40-4 Translator Set Up: If Frequency Screen

    Analog UHF Driver/Translator Chapter 3, Site Considerations, Installation and Setup Procedures Table 3-16: Menu 40-4 - Translator Set-up: IF Frequency Screen A N S M I Q U E N C Y > ↑ ↓ This screen is used to specify the IF Input frequency. This value plus the desired channel value is used to calculated the desired LO frequency.
  • Page 48 Analog UHF Driver/Translator Chapter 3, Site Considerations, Installation and Setup Procedures Table 3-20: Menu 40-8 - Translator Set-up: System Aural Power Calibration A N S M I B R A A U R A ↑ ↓ In analog systems, this screen is used to adjust the calibration of the system's aural forward power.

  • Page 49: Menu 40-12 Translator Set Up: Remote Commands Control

    This completes the description of the power set-back values do not directly screens for the Innovator LX Series correspond to the power of the exciter/amplifier chassis assembly. translator. Setting for 50% output sets a...

  • Page 50: Chapter 4 Circuit Descriptions

    Analog UHF Driver/Translator Chapter 4, Circuit Descriptions Chapter 4 Circuit Descriptions 4.1 (A1) UHF/VHF Receiver Tray 4.1.2 (A8) Dual Stage Amplifier (1265-1100) Assembly (1227-1503) The UHF/VHF Receiver Tray w/(Optional) The signal is next amplified +12 dB to Frequency Correction selects the desired approximately the -49 to -4 dBm level by a UHF or VHF On Channel Input Signal and low noise amplifier located on (A8-A1) the...
  • Page 51 Analog UHF Driver/Translator Chapter 4, Circuit Descriptions VHF High B and or 1/2 for VHF Low Band 4.1.7 (A6) L.O. Filter, UHF (1007- of the desired local oscillator frequency. 1101), VHF L.B. (1034-1211) or VHF H.B. (2065-1000) 4.1.5 (A4) Channel Oscillator The L.O.

  • Page 52: If Pll Board (Optional)

    Analog UHF Driver/Translator Chapter 4, Circuit Descriptions the 41.25 MHz + 45.75 MHz Combined IF board at J6. The IF CW connects to J2 of signal and amplified by U3 to the -41 (A14) the IF PLL Board (1109-1002). dBm to +4 dBm Level before it is split. One output is detected by U4 for use as 4.1.12 (A14) (Optional) IF PLL Board the ALC reference level to the Pin Diode...

  • Page 53: 12V Power Supply Board

    Analog UHF Driver/Translator Chapter 4, Circuit Descriptions 4 Amp Slo-Blo Fuse and three MOVs which protect the Tray from transients or The IF from the Receiver Tray enters the surges which may occur on the AC Input module and the signal is pre-corrected as Lines.
  • Page 54 Analog UHF Driver/Translator Chapter 4, Circuit Descriptions digital voltage that is applied to op-amp 4.2.1.2 External Modulated IF Selected U9A. There is a test point at TP3 that With the External Modulated IF selected, provides a voltage-reference check of the J1C-14C high, this turns on Q12 and input level.
  • Page 55 Analog UHF Driver/Translator Chapter 4, Circuit Descriptions increase or decrease the power output of the auto cutback will not operate. With Q4 the transmitter. biased on, a negative level determined by the setting of cutback level pot R71 is The low connects to U24B pin 5 whose applied to U24D, pin 12.
  • Page 56 Analog UHF Driver/Translator Chapter 4, Circuit Descriptions path forward biases CR3 and causes it to phase non-linearities of the output signal. act as a relatively low-value resistor. In Two of the stages are in the in phase addition, the larger current flow increases amplitude pre-correction path and one the voltage drop across R9 that tends to stage is in the quadrature phase pre-...
  • Page 57 Analog UHF Driver/Translator Chapter 4, Circuit Descriptions then connected to diode CR25 through The IF signal, at the input to the choke L45. The two chokes L44 and L45 frequency-response corrector circuit, is form a high impedance for RF that serves split using L24, L25 and R89.
  • Page 58 Analog UHF Driver/Translator Chapter 4, Circuit Descriptions which is the output power setting that is the output power will decrease, the null maintained by the ALC. The output of condition would no longer occur at U10A, U10A connects through SW1, if it is in pin 2.

  • Page 59: Lo/Upconverter Module

    Analog UHF Driver/Translator Chapter 4, Circuit Descriptions The ±12 VDC connects to the board at plugged into the backplane board or when J42C. The +12 VDC connects to J42C pin power is applied to the transmitter. This 16C and is filtered by L30, L41, and C80 is necessary because the divide numbers before it is applied to the rest of the are lost when power is removed from the...
  • Page 60 Analog UHF Driver/Translator Chapter 4, Circuit Descriptions the AFC voltage at J2 from (A1) the the board enters through jack J4-3 and is LO/Upconverter board (1302132). The filtered by L22 and C54-C58 before being VCXO output level is adjusted by C6, L2, distributed to the circuits on the board.
  • Page 61 Analog UHF Driver/Translator Chapter 4, Circuit Descriptions carrier. For instance, in system M, for digital applications, the LO is the center The RF input signal from the external filter frequency of the digital channel added to re-enters the board at J6 (-11 to -17 dBm) the 44-MHz IF frequency.

  • Page 62: Uhf Generator Board

    Analog UHF Driver/Translator Chapter 4, Circuit Descriptions Upconverter RF output jack of the module The larger voltage of either the inner or (+0 to +10 dBm). the outer loop is used to control the AGC loop. Since the outer loop is not used in The PLL and 10-MHz Reference section of this system, the inner loop controls the the Board...

  • Page 63: Lo/Upconverter Board

    Analog UHF Driver/Translator Chapter 4, Circuit Descriptions connects through the normally closed to pin 3 of U7A, that causes the output of contacts of the relay from pin 1 to pin 7 U7A to go high. The high connects to the to the IC U9.

  • Page 64: Control Monitoring/Power Supply Module

    Analog UHF Driver/Translator Chapter 4, Circuit Descriptions differences between the 10-MHz and VCXO frequencies are detected. These Voltage Requirements pulses are changed to a DC voltage level by the capacitor-resistor filter network, The board is powered by ±12 VDC that is C32, C36, C42, C38 and R49.

  • Page 65: Power Protection Board

    Analog UHF Driver/Translator Chapter 4, Circuit Descriptions Monitoring/Power Supply Module. J50-10 PS3 protects the +12 VDC 2 Amp circuits is line #1 input, J50-8 is earth ground for the System Controller, the Amplifier and J50-9 is line #2 input. The input AC Controller and the Spare Slot through J62 connects to J1 on the Power Protection pins 7, 8, 9 and 10.
  • Page 66 Analog UHF Driver/Translator Chapter 4, Circuit Descriptions interfaces are found on the Control U1 is not the master of the data port. A Board. Front panel operator interfaces dual RS-232 port driver IC and a RS-485 are brought to the control board using a Port driver is also in the second serial data 26 position conductor ribbon cable that I/O system.
  • Page 67 Analog UHF Driver/Translator Chapter 4, Circuit Descriptions controlled by U10 and U12, analog input panel mounted LED indicators. The levels multiplexer ICs. on the 1, 2, 3 and 4 LED Control Lines, for both the red and green LEDs, are U13, U14, U15, U16, U17 and U18 are 3 generated by the IC U11 as controlled by the DATABUS from the microprocessor U1.

  • Page 68: Switch Board

    Analog UHF Driver/Translator Chapter 4, Circuit Descriptions circuits U27, +5V, and U8, +5 Vserial, voltage setting, for the transmitter to are used for most other board circuits. operate. 4.4.3 (A4) Switch Board (1527-1406) 4.5 (A4) Power Amplifier Module The switch board provides five front- Assembly (1301923) panel momentary contact switches for user control and interface with the front-...

  • Page 69: Watt Uhf Amplifier Assembly

    Analog UHF Driver/Translator Chapter 4, Circuit Descriptions The 1-watt UHF amplifier board is amplifier assembly (Figure 4-1). The mounted in the 1-watt UHF amplifier assembly is made up of a (51-5378-308- assembly (1302891) and provides 00) module, which operates class AB and is approximately +17 dB of gain.

  • Page 70: Coupler Board Assembly

    Analog UHF Driver/Translator Chapter 4, Circuit Descriptions input and output sides, matching networks are placed ahead and behind The working point setting is factory the amplifier blocks. Transformers Z3 to implemented by means of potentiometers Z6 serve to balance the input and output R9, R11, and R12 and should not be signals.
  • Page 71 Analog UHF Driver/Translator Chapter 4, Circuit Descriptions manual reset switch is provided but should not be needed. U10A is used to turn Off the gate of Q10 in the event of high current in amplifier #1. Upper left corner U3 is used to determine At 0.886 VDC the current to amplifier #1 where the amplifier control board is should be greater than 5 Amps.
  • Page 72 Analog UHF Driver/Translator Chapter 4, Circuit Descriptions resistors. For very short duration pulses, connected to the other input. The output a 1206 resistor can handle up to 60 Average Forward power level connects to watts. The processor requires 226 uSec J9 pin 2 of the board.

  • Page 73: Chapter 5 Detailed Alignment Procedures

    The replacement Each module has the name of the module can then be sent back to Axcera module on the front, bottom for for repair. Contact Axcera Customer identification and correct placement.
  • Page 74 Analog UHF Driver/Translator Chapter 5, Detailed Alignment Procedures 5.1 UHF/VHF Receiver Tray. Channel Frequency and should not be tuned in the field. The output of the filter (1142479 or 1265-1100) (-50 dBm to -5 dBm) is fed either Connect a UHF or VHF Input that is at the through the additional amplifier stage on desired Channel Frequency, to J1 50Ω...
  • Page 75 Analog UHF Driver/Translator Chapter 5, Detailed Alignment Procedures Note: If the Optional Frequency Capacitors to minimize the Correction Kit is purchased a VCXO seventh and the ninth harmonics, Assembly (1145-1206), containing they should be at least -30 dB a VCXO Board (1145-1204), will be down, without affecting the x8 used instead of the standard Multiplier Output.
  • Page 76 Analog UHF Driver/Translator Chapter 5, Detailed Alignment Procedures 5.1.6 (A6) UHF Filter (1007-1101), Mounted in: The (A11) IF Filter/ALC Enclosure (1265-1105). VHF LB Filter (1034-1211) or VHF HB Filter (2065-1000) This board is used for additional adjacent This filter has been factory swept at the Channel rejection only if needed and may L.O.
  • Page 77 Analog UHF Driver/Translator Chapter 5, Detailed Alignment Procedures eliminate or minimize the Aural IF signal. Move the Jumper W1 on If DS1 is lit, follow the alignment Jack J4 back to between Pins 1 & procedure for setting up the VCXO 2, Operate Position.
  • Page 78 Analog UHF Driver/Translator Chapter 5, Detailed Alignment Procedures obtain +0.8 VDC on the LCD Display on 5.2 Innovator LX Series Exciter/Amplifier Chassis Assembly the Controller/Power Supply in the ALC screen. Move the MAN/AUTO ALC switch The exciter/amplifier chassis assembly back to Auto, which is the normal operates using an external IF input from operating position.
  • Page 79 Analog UHF Driver/Translator Chapter 5, Detailed Alignment Procedures pots are adjusted for the greatest carrier and the intermod products. separation between the peak visual Figure 5-1. Typical Red Field Spectrum 5.2.2 Frequency Response Delay Equalization Adjustment 5.2.3 Calibration of Output Power and Reflected Power of the The procedure for performing a translator...
  • Page 80 Frequency of the Notch. Monitor the output of the Transmitter with a This completes the detailed alignment Spectrum Analyzer and Null the procedures for the Innovator LX Series Distortion Product with the Bolt. Red translator. Field is a good Video Test Signal to use to If a problem occurred during the see the +8.08 MHz Product.
  • Page 81 Analog UHF Driver/Translator Chapter 5, Detailed Alignment Procedures accomplish. Apply the Sweep signal to To effect the Notch Depth Only, both the Input of the Trap Filter and monitor sections will have to be moved. The the Output. Loosen the Clamp holding Notch Depth is controlled by the Gap the Outer Conductor in place and make between the Center Conductor and the...
  • Page 82 APPENDIX A SYSTEM SPECIFICATIONS...
  • Page 84 * 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 85 APPENDIX B SAMPLE LOG SHEET...
  • Page 86 10-100W UHF Translator Appendix B, Sample Log Report Sheet UHF Exciter ALC (0 to 1 V) = ___________________V % Aural Power (0 to 120) = __________% % Reflected (0 to 120) = ____________% % Visual Power (0 to 120) = _________% Date __________________ Customer Name ______________________________ Call Letters ________________ Technician ___________________________________________...
  • Page 87 APPENDIX C SUBASSEMBLY DRAWINGS AND PARTS LISTS...
  • Page 88 Appendix C, Drawings and Parts Lists Innovator LX UHF Translator System ............1303268 100 Watt Exciter Block Diagram..............1302139 System Block Diagram................1303374 System Interconnect................1303375 Chassis Assembly, Exciter, Innovator LX Series........1301914 Interconnect ..................1303108 Backplane Board, Innovator LX Series ............1301941 Schematic ..................1301995 IF Processor Assembly ................1301938 IF Processor Board .................1301977...

  • Page 89: Uhf/Vhf Receiver Tray

    UHF Driver/Translator Appendix C, Drawings and Parts Lists 1 Watt UHF Amplifier Board.................1302761 Schematic ..................1302762 TFS 40W UHF Module, Tested..............1206693 Made from a TFS 40W UHF Module, Stork (51-5379-308-00). TFS 40W UHF Module, Stork ............51-5379-308-00 Schematic ..............51-5379-308-00 WSP RF Module Pallet, Philips................1300116 Made from a RF Module Pallet w/o Transistors (1152336).

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