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EuroTel ETLU4G03 Operating And Technical Manual

Uhf b iv-v rf air-cooled tv transmitter
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Summary of Contents for EuroTel ETLU4G03

  • Page 2 ETLU4G03 Rev. 003 Page 2 CMANU4G03 Jul 2013...

  • Page 3: Table Of Contents

    I - INTRODUCTION........................10 II - FUNCTIONAL DESCRIPION....................10 III - ENERGY DISTRIBUTION AND COOLING................12 IV - THEORY OF OPERATION OF ETLU4G03 TV TRANSMITTER ..........13 V - COMPOSITION OF ETLU4G03 TV TRANSMITTER ..............14 VI - INSTALLATION OF ETLU4G03 TV TRANSMITTER..............15 1 ) ETLU4G03 TV Transmitter: connections and module installation........15 2 ) Other connections.......................15...
  • Page 4 TABLE OF ILLUSTRATIONS Figure 1: ETLU4G03 TV Transmitter – front view................11 Figure 2: ETL0474G R.F. Amplifier module – rear view..............12 Figure 3: ETLU4G03 TV TRANSMITTER - functional blocks diagram........13 Figure 4: WEB interface: RF Output page..................19 Figure 5: WEB interface: Login page....................22 Figure 6: WEB interface - Summary page..................23...

  • Page 5: Section A- General Information

    © EUROTEL S.p.A. © EUROTEL S.p.A. The information contained herein is the property of EUROTEL S.p.A. and is supplied without liability The information contained herein is the property of EUROTEL S.p.A. and is supplied without liability The information contained herein is the property of EUROTEL S.p.A. and is supplied without liability The information contained herein is the property of EUROTEL S.p.A.

  • Page 6: Section B- Safety Instructions

    ETLU4G03 Rev. 003 Section B-SAFETY INSTRUCTIONS Section B- SAFETY INSTRUCTIONS Section B- Section B- SAFETY INSTRUCTIONS SAFETY INSTRUCTIONS 1 ) GENERAL INSTRUCTIONS GENERAL INSTRUCTIONS GENERAL INSTRUCTIONS GENERAL INSTRUCTIONS Observe the following safety precautions when handling this unit. This equipment operates with dangerous voltages and currents.

  • Page 7: Rf Hazards

    Rev. 003 ETLU4G03 Replacement of fuses Replacement of fuses Replacement of fuses Replacement of fuses The transmitter fuses accessible in the operator area may be replaced with the transmitter turned off. They should be replaced only by fuses with the same electrical specifications The protective switches accessible in the operator area may be actuated.

  • Page 8: First Aid In Case Of Electric Shock

    ETLU4G03 Rev. 003 6 ) FIRST AID IN CASE OF ELECTRIC SHOCK FIRST AID IN CASE OF ELECTRIC SHOCK FIRST AID IN CASE OF ELECTRIC SHOCK FIRST AID IN CASE OF ELECTRIC SHOCK DO NOT TOUCH THE VICTIM WITH YOUR BARE HANDS until the circuit is broken. SWITCH OFF. If this is not possible, PROTECT YOURSELF with DRY insulating material and pull the victim clear of the conductor.
  • Page 9 Rev. 003 ETLU4G03 • If possible, alleviate the pain from the burn part by immersing in cold water. • If help is available or as soon as resuscitation is no longer required, the wound should be covered with a DRY clean dressing.

  • Page 10: Section C- System Description, Installation And Technical Specifications

    INTRODUCTION INTRODUCTION • The series ETLU4G03 TV Transmitter provides linear, class “AB” amplification of R.F. TV signal in the standard UHF bands IV & V (470 to 860MHz). • ETLU4G03 is designed to work both in DTV mode and ATV mode.

  • Page 12: Energy Distribution And Cooling

    ETLU4G03 Rev. 003 III - ENERGY DISTRIBUTION AND COOLING III - ENERGY DISTRIBUTION AND COOLING III - III - ENERGY DISTRIBUTION AND COOLING ENERGY DISTRIBUTION AND COOLING • At the bottom of the cabinet a three phase isolation transformer provides: lightning protection and isolation from mains ⇒...

  • Page 13: Theory Of Operation Of Etlu4G03 Tv Transmitter

    R.F. Amplifiers. The resultant signals drive the three R.F. Amplifiers. The ETL0474G Output power combiner at the outputs of the three R.F. Amplifiers combines the output signals to a nominal level of 2kWrms. Figure 3: ETLU4G03 TV TRANSMITTER - functional blocks diagram Jul 2013 CMANU4G03 Page 13...

  • Page 14: Composition Of Etlu4G03 Tv Transmitter

    ETLU4G03 TV TRANSMITTER • ETLU4G03 TV Transmitter comprises three ETL0474G R.F. Amplifiers, one (two as option) Exciter, one Transmitter Supervisor & controller, one input power divider, one output R.F. power combiner, 50 Ohm balancing load for the combiner and one band-pass filter (option) for the attenuation of harmonics and out of band products.

  • Page 15: Installation Of Etlu4G03 Tv Transmitter

    CAUTION: CAUTION: CAUTION: The ETLU4G03 transmitter unit is shipped disassembled in a series of main blocks. To assemble and install the Transmitter unit follow the steps below. For R.F./electrical connections also refer to “MAINFRAME AND WIRING DIAGRAM” provided with For R.F./electrical connections also refer to “MAINFRAME AND WIRING DIAGRAM” provided with For R.F./electrical connections also refer to “MAINFRAME AND WIRING DIAGRAM”...

  • Page 16: First Time Operation Of Etlu4G03

    First time operation of ETLU4G03 First time operation of ETLU4G03 ETLU4G03 is shipped with all the main switches set in the correct configuration. So when the Transmitter is connected to mains network it will be turned off. Prior to switch on the transmitter ensure that all R.F. connections have been carried out properly.
  • Page 17 Rev. 003 ETLU4G03 • On the on-air exciter, exciter selected by changeover switch, increase “RF Output level” by 3dB steps checking each time that no reflected transmission power occurs. • Continue to increase “RF out level” until 0dB level is reached. Increasing RF Output level remember...

  • Page 18: Technical Specifications Of Etlu4G03 Tv Transmitter

    ETLU4G03 Rev. 003 VII - VII - TECHNICAL SPECIFICATIONS OF ETLU4G03 TV TRANSMITTER VII - VII - TECHNICAL SPECIFICATIONS OF ETLU4G03 TV TRANSMITTER TECHNICAL SPECIFICATIONS OF ETLU4G03 TV TRANSMITTER TECHNICAL SPECIFICATIONS OF ETLU4G03 TV TRANSMITTER 1 ) General General General...

  • Page 19: Section D- Maintenance & Alignment Instructions

    MAINTENANCE & ALIGNMENT INSTRUCTIONS INSTRUCTIONS INSTRUCTIONS INSTRUCTIONS I - I - I - I - ETLU4G03 TRANSMITTER UNIT ETLU4G03 TRANSMITTER UNIT ETLU4G03 TRANSMITTER UNIT ETLU4G03 TRANSMITTER UNIT 1 ) Changing R.F. Output Power of the transmitter unit. Changing R.F. Output Power of the transmitter unit.

  • Page 20: Replacement And Configuration Of Etl0474G R.f. Amplifier Module

    Due to the reliability of the basic ETL0474G module, partial failures in one RF Amplifier are very rare and total failures extremely unlikely. Replacement of an ETL0474G amplifier module can be done without turn off the ETLU4G03 transmitter unit. During this operation the transmitter unit will work at a lower R.F. output power.
  • Page 21 Rev. 003 ETLU4G03 • Switch off the amplifier module and switch on it again holding the “SELECT” button placed on the front panel of the ETL0474G amplifier module in order to make effective the E-Link setting. • Once the ETL0474G amplifier module is switched on, push “SELECT” button until the “Channel...

  • Page 22: Section E- Web Interface

    WEB pages. Figure 5: WEB interface: Login page WEB interface allows to monitor and manage all the setting parameters of the ETLU4G03 transmitter unit. In this way a complete remote control of the transmitter unit is available.

  • Page 23: Summary Web Page

    Rev. 003 ETLU4G03 1 ) Summary WEB page Summary WEB page Summary WEB page Summary WEB page Summary WEB page provides to the user an immediate overview of the major information regarding the transmitter unit. This page shows Forward and Reflected output power info, presence of warning/alarm status and major configuration status of interest.

  • Page 24: Supervisor Web Page

    Supervisor WEB page shows to the user the main measures and info of interest about the ETLU4G03 transmitter unit. This page summarizes the status of the ETLU4G03 transmitter unit. The user can find the info about the operating mode, exciter changeover, transmission frequency, warning and alarm status. In this page is also reported a list of the main measures on the transmitter unit as RF Output measures and temperature measures.

  • Page 25: Log Page

    Rev. 003 ETLU4G03 3 ) Log page Log page Log page Log page This page contains the detailed history of the transmitter unit showing any warning and alarm events occurred. In the history list, a red dot identifies an alarm event, a yellow dot identifies a warning event whereas a green dot identifies a restoring of correct operation.

  • Page 26: Amplifier Page

    In the Amplifier WEB page is possible to monitor the status of the single amplifier present in the ETLU4G03 transmitter unit. This page is available for each amplifier assembled in the transmitter unit. In this way is possible to check the correct operation of each ETL0474G amplifier module.

  • Page 27: Gsm (Option) Web Page

    GSM (option) WEB page GSM (option) WEB page For ETLU4G03 Transmitter unit with GSM option the GSM WEB page allows to enable and set GSM service configuration. Refer also to “ETL3100RT Operating and Technical Manual” for GSM service setting and command Refer also to “ETL3100RT Operating and Technical Manual”...
  • Page 28 ETLU4G03 Rev. 003 In the upper part of this page the user sets the Station ID, which identifies the transmitter unit of interest when the SMS is sent. It is possible to enable up to 16 telephone numbers to receive the SMS. To add a new telephone number write the number in the appropriate field and push “Apply Changes”...

  • Page 29: Section F- Layout Assembly And Circuit Diagrams

    I - I - I - I - MAINFRAME AND WIRING DIAGRAM MAINFRAME AND WIRING DIAGRAM MAINFRAME AND WIRING DIAGRAM MAINFRAME AND WIRING DIAGRAM 1 ) ETLU4G03 WIRING DIAGRAM ETLU4G03 WIRING DIAGRAM ETLU4G03 WIRING DIAGRAM ETLU4G03 WIRING DIAGRAM Jul 2013...
  • Page 30 ETLU4G03 Rev. 003 Page 30 CMANU4G03 Jul 2013...

  • Page 32: Mains Transformer And Energy Distribution

    Rev. 003 ETLU4G03 II - II - MAINS TRANSFORMER AND ENERGY DISTRIBUTION II - II - MAINS TRANSFORMER AND ENERGY DISTRIBUTION MAINS TRANSFORMER AND ENERGY DISTRIBUTION MAINS TRANSFORMER AND ENERGY DISTRIBUTION 1 ) Schematic diagram Schematic diagram Schematic diagram Schematic diagram...
  • Page 33 ETLU4G03 Rev. 003 Page 32 CMANU4G03 Jul 2013...
  • Page 35 Rev. 003 ETLU4G03 Jul 2013 CMANU4G03 Page 33...
  • Page 36 ETLU4G03 Rev. 003 EuroTel S.p.A. Via Martiri della Libertà, 4 20851 Lissone (MI), Italy Tel. +39 039 24361 – Fax +39 039 2436222 E-Mail sales@eurotel.it – Web http://www.eurotel.it Page 34 CMANU4G03 Jul 2013...

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