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Technalogix TAVD-100L Operation Manual

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VHF Digital Transmi0er
TAVD-100L
OPERATION MANUAL
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Summary of Contents for Technalogix TAVD-100L

  • Page 1 VHF Digital Transmi0er TAVD-100L OPERATION MANUAL Revision 0...

  • Page 2: Table Of Contents

    Contents 1. INTRODUCTION ..........................1 2. GENERAL SAFEGUARDS ........................2 2.1. S .............................2 AFETY AND IRST 2.2. O ..........................2 PERATING AFEGUARDS 3. TERMS OF SALE ..........................4 4. WARRANTY ............................7 5. PRINCIPLE OF OPERATION ......................8 6. INSTALLATION ............................9 6.1. U ..........................9 NPACKING AND NSPECTION 6.2.
  • Page 3 13.MAINTENANCE ..........................54 14.TROUBLESHOOTING ........................55 15.SPECIFICATIONS ..........................59 No part of this manual may be re-produced in any form without prior written permission from Technalogix Ltd. The information and specifications contained in this document is subject to change at any time without notice.

  • Page 4: Introduction

    1. Introduction Please take a few minutes to read the manual and familiarize yourself with your new Technalogix power amplifier. This user manual, the Final Inspection Report, and of course our equipment, should be everything you need to get on the air with a superb broadcast signal. We understand that a capable and confident user will get the most out of our product and we have made every attempt to educate readers of all technical levels.

  • Page 5: General Safeguards

    2. General Safeguards This section is written as a general guide for safe operation of the equipment and is intended for those having previous knowledge and experience with these kinds of equipment. It is not intended to contain a complete statement of all safety precautions, which should be observed by personnel using this or other electronic equipment.
  • Page 6 Load Impedance Technalogix transmitter equipment functions with a 50-ohm load impedance. It is imperative you maintain 50-ohm impedances throughout your system for your equipment to provide maximum power transfer to the antenna and decreased reflected power heading back towards the amplifier pallets.

  • Page 7: Terms Of Sale

    3. Terms of Sale Sales by Technalogix Ltd. (“Seller”) are made only on terms which are contained in this policy. Seller hereby gives notice of its objection to any different/additional terms and conditions. All sales are expressly conditional upon Buyers’ assent to the terms and conditions set forth below. These terms and conditions may be modified/ supplemented only by written document signed by authorized representative of the Seller.
  • Page 8 without written Seller consent. All changes must be included in a change order reflecting purchase order and submitted to the Seller. All other changes will not be accepted/acknowledged. Changes may affect delivery dates. Expenses incurred because of changes shall be charged to Buyer. Buyer will be liable for Seller’s costs incurred, plus a reasonable profit, for the portion of work terminated, in accordance with generally accepted accounting principles, together with cancellation charges.
  • Page 9 Installation Seller assumes no obligation to install any product sold to place any products in working order at Buyer’s premises and not responsible for freight damage. Validity of Separate Clauses If any provisions of this agreement shall be held invalid, illegal, or unenforceable, the validity, legality or enforceability of the remaining provisions shall not be affected or impaired thereby.

  • Page 10: Warranty

    4. Warranty Technalogix products have been completely tested and found to meet specifications and be in proper operating condition. Technalogix-manufactured products are warranted to be free from defects in materials and workmanship for a period of two (2) years from the date of shipment. Products sold through, but not directly manufactured by Technalogix, carry the original manufacturer’s warranty.

  • Page 11: Principle Of Operation

    5. Principle of Operation The RF power amplifier is designed to take a modulated RF carrier at a low level (typically less than 10 dBm, but custom levels available), and amplifies the carrier to a level that is suitable for transmission through an antenna, or alternative load.

  • Page 12: Installation

    Claims for loss or damage may not be withheld from any payment to Technalogix, nor may any payment due be withheld pending the outcome thereof. Technalogix cannot guarantee the carrier’s performance.

  • Page 13: Panel Connections

    6.2. Panel Connections AC IN: Single phase AC input to feed internal AC/DC switching power supplies. Check with factory as not all power supplies are universal 110/220V. RF OUT: Modulated RF carrier output (N female or 7-16 DIN female standard) REMOTE PORT: Parallel parameter interface (DB25 female) ETHERNET/SNMP: Ethernet or Simple Network Management Protocol (SNMP) connection for...
  • Page 14 load cable on the last enclosure in the chain to the RF Out and connect the RF coaxial between the power amplifier and the second enclosure in the chain. The system must be loaded into a 50-ohm load before any power is turned on for over-the-air systems.
  • Page 15 If the front end modulator, processor, or source was not provided by Technalogix, ensure that its RF output level is turned down as far as possible. This will help ensure that the different product does not initially overdrive the power amplifier due to mismatched RF levels.

  • Page 16: Operating Procedure

    7. Operating Procedure Assuming the previous installation instructions have been completed and cautions noted, and the power amplifier is ready to receive a properly modulated RF signal, proceed with the following steps to place the system in operation. The power amplifier has been factory aligned for a specific frequency (per system specification), signal levels and optimum performance.
  • Page 17 8. After the warm up and soft start (if enabled) is complete, apply the RF drive signal (and adjust the level for non Technalogix supplied front end equipment) between the modulator, processor, or RF source and the power amplifier RF In (BNC female, 50 ohm). This ensures that the RF drive signal is applied only after the power supply is stable and the bias voltages are applied to the amplifier.
  • Page 18 At this time, Technalogix recommends that you document your measurements to use as a reference over time. The measurements can be made either from the front display, or remotely via the Remote Port (DB25), Ethernet (lower RJ45), or SNMP (lower RJ45), whose operation is explained in section 10.

  • Page 19: Control Interface

    8. Control Interface 8.1. Touch Screen Control All switch/settings and user interface is handled through the resistive touchscreen on the front panel. The interface provides the user with the ability to monitor the following power amplifier parameters from the front panel: Forward (incident) power at the power amplifier output.
  • Page 20 Toggles between Main Screen and Menu Screen. The menu screen has additional settings and monitoring over the Main Screen, and is illustrated in the next section. Forward RF power level in % out of 100 or in watts. Mimics data from level bar. Overdrive protection starts at 110% where the power amplifier folds back power by adding attenuation to the power amplifier input until a safe level obtained.

  • Page 21: Menu Screen

    RF output power is determined largely in part by the amount of attenuation that the control system places on the input of the power amplifier. Whether a fault occurs and attenuation gets added or the user requests a change in RF power level via the web/SNMP/Remote Port interface, the attenuation section of the summary bar conveys important operating information.

  • Page 22: Rf Levels Screen

    Each of the menu icons on the Menu Screen allow the user to take additional readings or make settings that are not provided from the Main Screen. Any changes to settings will be stored in non-volatile memory with the exception of the date and time which are stored as long as the backup battery remains charged (approximately one week of loss of AC power or power down).
  • Page 23 protection will kick in and the system will fold back the RF power to a safe level. There may be a residual amount of Forward power even at 0% setting, but it should be insignificant. To change the VSWR Shutdown Trip Point: Use the up and down arrows to set the VSWR shutdown trip point to between 1.1:1 and the factory determined upper limit.

  • Page 24: Power Supplies Screen

    8.3.2.Power Supplies Screen This screen allows the user to view individual voltage and current readings. The Power Supplies Screen is displayed below: DC supply voltages are nominally 30 or 48Vdc depending on the system. Readings of this voltage in the Power Supplies Screen, and on the summary bar at the bottom of the touchscreen, should not vary more than +/- 2%.

  • Page 25: History Screen

    The Remote Port, or parallel data, through the DB25 connector on the back panel of the enclosure extracts the majority of the internal system information and provides it externally for processing and control. The Remote Port is the equivalent of a standalone external remote monitor.

  • Page 26: Date And Time Screen

    The ten (10) most recent events are displayed on the History Screen. As more events occur, the earliest recorded event gets displaced on the screen. If the user changes the time and/or date from the Date and Time Screen, then the events that occurred before the time and/or date change remain unchanged with their original time stamp.

  • Page 27: Version Screen

    Changes to the date or time are made by pressing the up or down arrows associated with each section (month, day, hour, etc). Any changes will immediately be seen in the summary bar on the bottom right of the touchscreen. When the changes are made, press the “BACK TO MAIN”...

  • Page 28: Settings Screen

    8.3.8.Settings Screen The Settings Screen allows the user to modify some of their preferences on how information is displayed on the touchscreen, as seen in the figure below: Pressing the DEGREES F button will convert all temperature readings to degrees Fahrenheit from Celsius (and vice versa).

  • Page 29: Web Interface

    9. Web Interface The following pages outline the steps required to access the Technalogix Adrenaline Web Interface. Descriptions specific to the user’s computer, router, or network setup are limited due to the differences in the multitude of networking equipment. 1. Connect Power Amplifier/Transmitter to your Network/PC Connect an Ethernet cable from the RJ45 port (labelled ETH / SNMP) on the back panel of the power amplifier to your network’s Ethernet connection.
  • Page 30 2.2. Main Page Description After entering the login information, the main page is then shown on the browser, as illustrated below for either single amplifier systems or multiple amplifier systems that are combined: Single Amplifier System Multiple Amplifier System...
  • Page 31 The model number and serial number of the unit are displayed in the top left of the browser screen. The Status Flags section provides the user with feedback from the system. Specifically, there are status flags for: RF Carrier is on or off •...
  • Page 32 best suit their application. 3.1.1.Host Name The Host Name shows the current webpage name (default is ADRENALINE). Enter a new name here if you wish to change this. For example, entering YourCompany will make the web address: http://yourcompany/index.htm...
  • Page 33 3.1.2.HTTP Port The HTTP Port shows the current port used for internet access, 80 or 81. Port 80 is the default and is the accepted standard. Port 81 is available because some internet providers block access to port 80 unless you pay more. Be very careful changing HTTP ports as it can be difficult to go back to an original port.
  • Page 34 3.2. SNMP Configuration 3.2.1.SNMP Communities The SNMP Configuration page allows you to set the SNMP communities. Set these to limit access to the system via SNMP. Default communities are: READ: Public Read WRITE: Private Write Public...
  • Page 36 3.2.2.SNMP Management Information Base (MIB) The MIB file allows access to the following data via the SNMP protocol: Read Only Dip switch Setting - 8 bit value from dipswitch Pallet Supply Voltage - voltage level (Vdc) Temperature - temperature in (°C) 12V Current - current on12V bus (Adc) 48V Current...
  • Page 37 Reset - 1 Reset System 0 Normal Carrier On/Off - 1 Carrier On 0 Carrier Off Carrier Up - 1 Increase Carrier Level for AGC target 1% Carrier Down - 1 Decrease Carrier Level for AGC target 1% Read and Write communities can be set from the web interface, as described earlier in this section.
  • Page 38 3.2.3.SNMP Traps To enable the SNMP traps, within the MIB browser that you choose: Set enable traps to 1 (or yes, depending on MIB browser). Set the IP address to that of the receiving computer. Set the community to one of the read communities set above.
  • Page 39 Make sure that your receiver’s port is set to 162 The system will generate a general trap on any error flag and send an 8-bit value indicating the type of error, as follows: Bit 0(LSB) Overdrive Bit 1 High VSWR Bit 2 High Temperature Bit 3...
  • Page 40 3.3. Password Configuration This page allows the setting of the web browser’s User or Admin password, as illustrated below. The User account allows access only to the main page. The Admin account allows access to the main and all the configuration pages. Passwords are to be a maximum of 7 characters long.

  • Page 41: Remote Control (Via Db25)

    9.1. Remote Control (via DB25) An additional option for remote control of the power amplifier/transmitter is through the DB25 connector found on the back panel of the power amplifier/transmitter The overall functions of each pin on the Remote Port are indicated in the following DB25 pinout: Pin Number Description Ground...

  • Page 42: Combiner Control

    9.2. Combiner Control In higher power systems that contain more than one power amplifier enclosure, there also is a combiner enclosure to combine the individual outputs of all of the power amplifier enclosures. This combiner enclosure also monitors the total power of the overall system. The following is a brief description of the operation of the monitor system found in the combiner unit, if applicable.
  • Page 43 Errors An error that causes one enclosure to shutdown will cause the other enclosures to shutdown. If one power amplifier or the combiner is to fold back its power levels to stay within operating parameters, the others will match that power level.

  • Page 44: Back Panel Monitoring

    9.3. Back Panel Monitoring In addition to the remote control interfacing through Ethernet, SNMP, and the Remote Port, the back panels on most units also contain additional monitoring achieved through LED status indicators, as seen below: There are (5) fault LEDs, (2) power supply indicator LEDs, and one software LED, as described below. CURRENT: If the RF pallet current draw exceeds factory set levels, the green LED is turned off RF INPUT:...

  • Page 46: Monitor And Control System

    10.Monitor and Control System 10.1.Control System Overview The control system is used for a variety of functions, the most important of which is ensuring that the amplifier continues to operate in a safe manner. The control system also allows the user to monitor and control the amplifier or transmitter from both the front panel and remotely through the parallel port, or Ethernet.

  • Page 47: System Block Diagram - 2 Amplifier

    10.1.1.System Block Diagram – 2 Amplifier AC In AC in Monitor Port Amplifier 1 Power Supply and Display Signal Modulator Amplifier 1 Filter and Coupler RF Out...

  • Page 48: Adrenaline Block Diagram

    10.1.2.Adrenaline Block Diagram...

  • Page 49: Rf Module

    10.2.RF Module The RF PCB module is located on the back panel of the power amplifier enclosure(s) and has several primary functions: act as a variable attenuator so the control system can add attenuation to the RF input of the •...

  • Page 50: Temperature Sensor Module

    10.4.Temperature Sensor Module The Temperature Sensor module is a small board mounted to the main heatsink of the amplifier. The purpose of the temperature sensor module is to take temperature readings of the heatsink. The temperature is monitored by the system to trigger shutdown in case of overheating. In custom applications, there may be multiple temperature sensors installed onto a heatsink or throughout the system.

  • Page 51: Hardware Components

    The exact bias and drain current of your system are found in the Final Inspection Report supplied in the shipping package. Output power levels are absolute maximum levels. Technalogix operates the pallet at reduced levels to improve performance and increase reliability.

  • Page 52: Power Supply

    11.3.Power Supply Switching AC-DC power supplies are used to power the amplifier pallets, the control circuits, and all of the fans. The DC system voltage is set at either 28 or 48Vdc nominally, depending on the system. All fans run off this same DC supply. The specific DC system voltage is found in the Final Inspection Report.

  • Page 54: Facility Recommendations

    • suppliers Technalogix recommends that proper AC line conditioning and surge suppression be provided on the primary AC input to the power amplifier or transmitter. If DC is used as a source, a DC-DC converter is recommended to provide isolation between the supply and the load. All electrical service should be installed with your national electrical code in your area, any applicable provincial or state codes, and good engineering practice.

  • Page 55: Shelter Security

    The selection, routing, and length of coaxial cable are extremely important in the installation. If there is a 3 dB line loss in the cable between your unit’s output and the transmitting antenna, the unit will only deliver half power. Buy the best cable you can obtain, route it via the shortest way to the antenna, and keep it straight.

  • Page 56: Heating And Cooling Requirements

    The environment’s temperature will contribute greatly to the length of the power amplifier’s or transmitter’s life. Technalogix recommends that the building’s filtered air intake must have capacity for all air-flow in the building plus an additional 20%. Keep the intake below the roofline to avoid intake of solar heated air.

  • Page 57: Maintenance

    13.Maintenance If your unit employs a filter on the air inlet for the fans, the filter should be cleaned every 30 days. If the equipment is operated in a severe dust environment, the filters on the inlet fan may need to be cleaned more regularly.

  • Page 58: Troubleshooting

    14.Troubleshooting The first and most important aspect of troubleshooting anything is to be systematic. Note where you have looked and what you found. Look first for the obvious. Make a physical inspection of the entire facility. Are all necessary connections properly made? •...
  • Page 59 AC - DC Power Supply (PSU) Troubleshooting Apply AC power to back panel (check voltage) Turn on AC switch on back panel Display On? PSU is OK Fuse Blown? Turn off AC switch on back panel Replace Fuse, use same type and rating Turn on AC switch on back panel Turn off AC switch on back panel Fuse Blown?

  • Page 62: Specifications

    15.Specifications General Data Model Number TAVD-250H Frequency 170 - 230 Bandwidth MHz (ATSC) Input Signal dBm max Output Power W nominal Supply Voltage 200-240 V AC 1 Phase Supply Current Amps AC typ 220Vac OperaUng Temperature Range -10 to 35 C, derate output above 25C RelaUve Humidity % noncondensing...
  • Page 63 SpecificaUons subject to change Thank you for choosing Technalogix Ltd. If there is anything we can do to help in your success, please do not hesitate to contact us. We also welcome suggestions for product improvements or feature enhancements.

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