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R.V.R. Elettronica TEX300LCD/S User Manual

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TEX300LCD
TEX300LCD
USER MANUAL
VOLUME1
Manufactured by R.V.R ELETTRONICA Italy

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黄承祥
April 21, 2025

该型设备无大概电路图，我特别需要该型发射机电源单元的电路原理图

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Summary of Contents for R.V.R. Elettronica TEX300LCD/S

  • Page 1 TEX300LCD TEX300LCD USER MANUAL VOLUME1 Manufactured by R.V.R ELETTRONICA Italy...
  • Page 2 Limitations of use can apply in respect of operating freuency, transmitter power and/or channel spacing. Declaration of Conformity Hereby, R.V.R. Elettronica, declares that this FM transmitter is in complian- ce with the essential requirements and other relevant provisions of Directive 2014/53/EU.

  • Page 3: Technical Specifications

    TEX300LCD ELETTRONICA Technical Specifications TEX300LCD Parameters U.M. Value Notes GENERALS Frequency range 87.5 ÷ 108 Rated output power Continuously variable by software from 0 to maximum Modulation type F3E Direct carrier frequency Operational Mode Mono, Stereo, Multiplex Working temperature °C -10 to + 50 Working Humidity 95 (Without condensing)
  • Page 4 TEX300LCD ELETTRONICA AUDIO INPUTS Connector XLR F Type Balanced Left / Mono Impedance 10 k or 600 Selectable by rear panel dip switches Input Level /Adjust -13 to +13 continuosly variable Connector XLR F Type Balanced Right Impedance 10 k or 600 Selectable by rear panel dip switches Input Level -13 to +13...

  • Page 5: Table Of Contents

    TEX300LCD ELETTRONICA Table of Contents Preliminary Instructions Warranty First Aid Treatment of electrical shocks Treatment of electrical Burns General Description Unpacking Features Frontal Panel Description Rear Panel Description Connectors Description Installation and use Installation Operation Management Firmware Optional Function Identification and Access to the Modules Identification of the Modules Spare parts Working Principles...
  • Page 6 TEX300LCD ELETTRONICA This page was intentionally left blank User Manual Rev. 2.1 - 06/07/20...

  • Page 7: Preliminary Instructions

    2. Warranty La R.V.R. Elettronica warrants this product to be free from R.V.R. Elettronica shall not be liable for injury to persons or defects in workmanship and its proper operation subject to the limitations set forth in the supplied Terms and Conditions.

  • Page 8: First Aid

    • Loosen the victim’s clothing and have him/her lie down. R.V.R. Elettronica Via del Fonditore, 2/2c • Call for medical help as soon as possible. 40138 BOLOGNA ITALY Tel. +39 051 6010506 Treatment of electric burns 3.

  • Page 9: General Description

    ELETTRONICA 4. General Description The TEX300LCD, manufactured by R.V.R. Elettronica, is an exciter for Frequency Modulated audio broadcasting in a frequency modulation able to transmit in the band between 87.5 and 108 MHz, in step of 10 KHz, with an RF output power adjustable up to a maximum of 300 W into a 50 Ohm standard load.
  • Page 10 TEX300LCD ELETTRONICA The RF power section of the TEX300LCD features a MOSFET module delivering up to 300W output power. Operating frequency stability is ensured by a temperature-compensated reference oscillator and is maintained by a PLL (Phase Locked Loop) system. The exciter will go into frequency lock within 30 seconds after power-on.

  • Page 11: Frontal Panel Description

    TEX300LCD ELETTRONICA 4.3 Frontal Panel Description [1] AIR FLOW Air flow for the forced ventilation. [2] ON Green LED, lit when the exciter is working. [3] LOCK Green led, lit when the PLL is locked on the working frequency. [4] FOLDBACK Yellow LED, lit when the foldback function is operating (automatic reduction of the delivered RF power).

  • Page 12: Rear Panel Description

    TEX300LCD ELETTRONICA 4.4 Rear Panel Description [1] PLUG VDE plug for mains supply. [2] FAN Fan for the forced ventilation of the exciter. [3] R.F. OUTPUT RF output connector, N-type, 50Ω. [4] PHASE ADJ Pilot tone phase adjustment trimmer. [5] PILOT LVL BNC output for the pilot tone.

  • Page 13: Connectors Description

    TEX300LCD ELETTRONICA [31] RFL EXT. AGC Trimmer for automatic gain control based on external signal of reflected power. [32] FWD EXT. AGC Trimmer for automatic gain control based on external signal of forward power. [33] RS232 Not used. [34] REMOTE DB15 connector for telemetry of the machine.

  • Page 14: Installation And Use

    TEX300LCD ELETTRONICA 5. Installation and use This section provides a step-by-step description of equipment installation and configuration procedure. Follow these procedures closely upon first power-on and each time any change is made to general configuration, such as when a new transmission station is added or the equipment is replaced.

  • Page 15: Preliminary Requirements

    TEX300LCD ELETTRONICA 5.1 Preparation 5.1.1 Preliminary Requirements The equiment ventilation and the work space must be suitable for maintenance operations according to the directive in force in the country in which this device is installed. It is necessary to leave a minimum distance of 50 cm on the front and back sides of the device to have a proper functioning and to facilitate air circulation through the ventilation grids.

  • Page 16: Placement Of Equipment

    TEX300LCD ELETTRONICA TEX300LCD @ 90÷260 Vac Mains fuses (1x) 6.3A tipo 5x20 Table 5.1: Fuses 5.1.2 Placement of equipment Useful tips for a correct installation: • Do not use in presence of external elements near inlets and outlets ventilation systems, as they could prevent a proper ventilation of the device. •...
  • Page 17 TEX300LCD ELETTRONICA The transmitter normally have the outlet air in the back of machine. In this case, provide adequate ventilation of the room. COLD 50cm In alternative is cooled by forced ventilation and the air outlet is located on the roof of machine.
  • Page 18 TEX300LCD ELETTRONICA Is highly recommended to install the rack at least 50 cm from the rear and side wall so as to allow an optimum air flow and to facilitate workers. 50cm 50cm 5.1.2.1 Rack power supply connections Provide for the following (applicable to operating tests and putting into service): √ Single-phase 230 VAC or 115 VAC (-15% / +10%) mains power supply for TEX300LCD, both with adequate earth connection.
  • Page 19 TEX300LCD ELETTRONICA N PE If transmitter require three-phase power with 3F (black, brown and grey) + N (blue) + GND (green yellow), keep in mind this requirement to connect to your distribution board. N PE Note: the mains must be equipped with adequate earth connection properly connected to the equipment.
  • Page 20 TEX300LCD ELETTRONICA WARNING: Electric shock hazard! Never handle the RF output connector when the equipment is powered on and no load is connected. Injury or death may result. Ensure that the distribution board of the transmitter is set to “OFF”. 5.1.3 Device power supply connections Provide for the following (applicable to operating tests and putting into service): √ Single-phase 230 VAC or 115 VAC (-15% / +10%) mains power supply for...
  • Page 21 TEX300LCD ELETTRONICA Note: to ensure both the safety of the operators and the correct functioning of the apparatus, it is essential that the network system is grounded, and that it is properly connected to the equipment. Useful tips for a correct connection: •...
  • Page 22 Connect the amplifier INTERLOCK OUT output to the matching INTERLOCK IN input fitted on all R.V.R. Elettronica exciters as standard; if your exciter is a different brand, identify an equivalent input.
  • Page 23 TEX300LCD ELETTRONICA the limits of exposure declared within this document, it is necessary that the antenna gain used with this device should be 0dBi or less and all persons should maintain a minimum separation distance of 109.25 cm for general uncontrolled exposure and general controlled exposure. RF Exposure Limits for Canada, according to IC regulation: setting to the maximum of the output power of the apparatus, to guarantee the limits of exposure declared within this document, it is necessary that the antenna...
  • Page 24 TEX300LCD ELETTRONICA 5.1.5.4 Output power level control Note: The exciter incorporates Automatic Gain Control (AGC) and output power is modulated based on the power level set by the user and actual operating conditions, such as temperature, reflected power and other parameters. Please read section 5.3 for more details of RF power modulation.

  • Page 25: Operation

    TEX300LCD ELETTRONICA When setting input sensitivity, please consider that the default menu reports instantaneous modulation level and an indicator provides a 75 kHz reading. To ensure correct adjustment, apply a signal with the same level as user’s audio broadcast maximum level and then adjust using the trimmer until instantaneous deviation matches the 75 kHz reading.
  • Page 26 TEX300LCD ELETTRONICA The screen that is shown is similar to the following: Menu 2 NOTE: It is advisable to write down the password set, if you forget the password it is not possible to recover it automatically. To recover the password, contact Customer Service by sending the alphanumeric PUK code of 6 characters generated automatically when entering the password.

  • Page 27: Management Firmware

    TEX300LCD ELETTRONICA If PWR is set to OFF, i.e. power output is disabled, move cursor to PWR. Press ENTER and label will switch to ON, i.e. power output is enabled. Press ESC twice to go back to the default menu (menu 1). 3) Fine tune power setting from menu 2 (see description of item 1b) until achieving the desired value.
  • Page 28 TEX300LCD ELETTRONICA Menù 1 Predefined menu Menu 2 Menù 2 Password menu Power Adjustment Menu Menu 3 Selection Menu Menu 4 Operation Menu Menu 5 Power Menu Menu 6 Power Amplifier Menu Menu 7 Settings Menu Menu 8 Miscellaneous Menu Menu 9 Versions Menu Menu 10...
  • Page 29 TEX300LCD ELETTRONICA As soon as operating conditions are restored, power output is re-enabled with the same settings in use prior to the alarm condition. Under 20kHz, no modulation occurs. After a preset time of about 5 minutes (not editable), a NO AUDIO condition is indicated in the main screen, but power is not inhibited.
  • Page 30 TEX300LCD ELETTRONICA Modifies modulation display (toggles between “x1” and “x10”). In “x10” mode, instantaneous deviation indication is multiplied by a factor of 10, and the bar meter on the default menu will reflect 7.5 kHz instead of 75 kHz. This display mode is convenient when you wish to display low deviation levels, such as those caused by pilot tone or subcarriers.
  • Page 31 TEX300LCD ELETTRONICA 5.3.3 Power Amplifier (P.A) Menu This screen is made up of four lines that can be scrolled using the buttons and shows the readings relating to final power stage: Menu 7 Note that these are readings, rather than settings, and cannot be edited (note the empty arrow).
  • Page 32 TEX300LCD ELETTRONICA 5.3.5 Miscellaneous Menu (Mix) This menu lets you set equipment address in an I C bus serial connection: Menu 9 C address setting. The I2C network address becomes significant when the exciter is connected in an RVR transmission system that uses this protocol.

  • Page 33: Optional Function

    NOTE: This function is typically used in the USA. The factory setting for frequency shift is +10KHz and code repetition period is 60 minutes (please contact R.V.R. Elettronica if you need different settings), whereas station identified may be programmed by the user following the indications provided in section below.
  • Page 34 TEX300LCD ELETTRONICA Enables / disables FSK code transmission. Shows the Morse code sent normally. 5.4.1.1 Changing the ID code User may change the FSK code used as a station identifier at any time. This procedure requires: • 1 RS232 male-female cable; •...

  • Page 35: Identification And Access To The Modules

    TEX300LCD ELETTRONICA 6. Identification and Access to the Modules 6.1 Identification of the Modules The TEX300LCD is made up of various modules linked to each other through connectors so as to make maintenance and any required module replacement easier. 6.1.1 TEX300LCD Upper view The figure below shows the equipment upper view with the various components pointed out.

  • Page 36: Spare Parts

    TEX300LCD ELETTRONICA 6.2 Spare parts The list below identifies the spare parts codes for a simple replacement of modules in case of maintenance. Spare Parts Name Spare Parts Code Switching power supply KPSL5012R01A + SP-SRG085A RF final control card SP-BIA175A RF final section SP-FIN045A Main audio card + PLL + VCO...

  • Page 37: Working Principles

    TEX300LCD ELETTRONICA 7. Working Principles 7.1 Panel board The panel board contains the microcontroller (PIC18F452) that implements the equipment control software, the display and the other components needed to interface with the user. The board is connected with the other machine modules, both for power supply distribution and for the control and measures.

  • Page 38: Telemetry Board

    TEX300LCD ELETTRONICA 7.3 Telemetry board This board is designed to inform the user of the equipment operation state. All input and output signals are available on the DB15 connector. The same board also features the “INTERLOCK” BNC connector for disabling the device.

  • Page 39: Control Board

    TEX300LCD ELETTRONICA • Low-pass filtering of the RF signal in output This board also features an RF sampling of approximately -60dB RF with respect to the output, which is available on a BNC connector below the transmitter output connector. This sample is is useful for verifying the characteristics of the carrier, but not for verifying those of the upper harmonics.

  • Page 40: Maintenance And Repair Procedures

    TEX300LCD ELETTRONICA 8. Maintenance and repair procedures 8.1 Introduction This section provides general information about maintenance and electrical settings for the TEX300LCD exciter. The maintenance is separated into two sections depending on the complexity of the procedure and the instrumentation required for the test to complete the maintenance.

  • Page 41: Power Up/Down Option (Only Software)

    TEX300LCD ELETTRONICA 9. Option This section displays views on the variants compared to the basic version to be requested in the order. For more information about the options, rely on the respective user manuals. 9.1 Power UP/DOWN Option (only software) The Power UP/DOWN option modifies the signal receive function for the signals present at the telemetry connector.
  • Page 42 TEX300LCD ELETTRONICA This page was intentionally left blank / 36 User Manual Rev. 2.1 - 06/07/20...
  • Page 43 ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________...
  • Page 44 R.V.R Elettronica Via del Fonditore, 2 / 2c Zona Industriale Roveri · 40138 Bologna · Italy Phone: +39 051 6010506 · Fax: +39 051 6011104 e-mail: info@rvr.it ·web: http://www.rvr.it The RVR Logo, and others referenced RVR products and services are trademarks of RVR Elettronica in Italy, other countries or both. RVR ® 1998 all rights reserved. All other trademarks, trade names or logos used are property of their respective owners.

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Tex300lcd

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