BLUES30NV FM Exciter User Manual

Volume 1

Document Information

  • File Name: BLUES30NV_ING.P65
  • Version: 1.0
  • Date: 22/05/2005

Revision History

DateVersionReasonEditor
22/05/051.0First VersionJ. Berti

Copyright and Contact Information

© Copyright 2005

R.V.R. Elettronica SpA
Via del Fonditore 2/2c - 40138 - Bologna (Italia)

All rights reserved. Printed and bound in Italy. No part of this manual may be reproduced, memorized or transmitted in any form or by any means, electronic or mechanic, including photocopying, recording or by any information storage and retrieval system, without written permission of the copyright owner.

Notification of Intended Purpose and Limitations of Product Use

This product is an FM transmitter intended for FM audio broadcasting. It utilizes operating frequencies not harmonized in the intended countries of use. The user must obtain a license before using the product in the intended country of use. Ensure respective country licensing requirements are complied with. Limitations of use can apply in respect of operating frequency, transmitter power and/or channel spacing.

Declaration of Conformity

Hereby, R.V.R. Elettronica SpA, declares that this FM transmitter is in compliance with the essential requirements and other relevant provisions of Directive 1999/5/EC.

ⒸⒺⒾ

1. Preliminary Instructions

This manual is written as a general guide for those having previous knowledge and experience with this kind of equipment, well conscious of the risks connected with the operation of electrical equipment.

It is not intended to contain a complete statement of all safety rules which should be observed by personnel in using this or other electronic equipment.

The installation, use and maintenance of this piece of equipment involve risks both for the personnel performing them and for the device itself, that shall be used only by trained personnel.

R.V.R. Elettronica SpA doesn't assume responsibility for injury or damage resulting from improper procedures or practices by untrained/unqualified personnel in the handling of this unit.

Please observe all local codes and fire protection standards in the operations of this unit.

⚠ WARNING: always disconnect power before opening covers or removing any part of this unit.

Please observe all local codes and fire protection standards in the operations of this unit.

⚠ WARNING: this device can irradiate radio frequency waves, and if it's not installed following the instructions contained in the manual and local regulations it could generate interferences in radio communications.

This is a "CLASS A" equipment. In a residential place this equipment can cause hash. In this case can be requested to user to take the necessary measures.

R.V.R. Elettronica SpA reserves the right to modify the design and/or the technical specifications of the product and this manual without notice.

2. Warranty

Any product of R.V.R. Elettronica is covered by a 24 (twenty-four) month warranty.

For components like tubes for power amplifiers, the original manufacturer's warranty applies.

R.V.R. Elettronica SpA extends to the original end-user purchaser all manufacturers warranties which are transferrable and all claims are to be made directly to R.V.R. per indicated procedures.

Warranty shall not include:

  1. Re-shipment of the unit to R.V.R. for repair purposes;
  2. Any unauthorized repair/modification;
  3. Incidental/consequential damages as a result of any defect;
  4. Nominal non-incidental defects;
  5. Re-shipment costs or insurance of the unit or replacement units/parts.

Any damage to the goods must be reported to the carrier in writing on the shipment receipt.

Any discrepancy or damage discovered subsequent to delivery, shall be reported to R.V.R. Elettronica within 5 (five) days from delivery date.

To claim your rights under this warranty, you should follow this procedure:

  1. Contact the dealer or distributor where you purchased the unit. Describe the problem and, so that a possible easy solution can be detected.

Dealers and Distributors are supplied with all the information about problems that may occur and usually they can repair the unit quicker than what the manufacturer could do. Very often installing errors are discovered by dealers.

  1. If your dealer cannot help you, contact R.V.R. Elettronica and explain the problem. If it is decided to return the unit to the factory, R.V.R. Elettronica will mail you a regular authorization with all the necessary instructions to send back the goods;
  2. When you receive the authorization, you can return the unit. Pack it carefully for the shipment, preferably using the original packing and seal the package perfectly. The customer always assumes the risks of loss (i.e., R.V.R. is never responsible for damage or loss), until the package reaches R.V.R. premises. For this reason, it is suggested to insure the goods for the whole value. Shipment must be effected C.I.F. (PREPAID) to the address specified by R.V.R.'s service manager on the authorization.

DO NOT RETURN UNITS WITHOUT OUR AUTHORIZATION AS THEY WILL BE REFUSED.

  1. Be sure to enclose a written technical report where mention all the problems found and a copy of your original invoice establishing the starting date of the warranty.

Replacement and warranty parts may be ordered from the following address. Be sure to include the equipment model and serial number as well as part description and part number.

Service Address:
R.V.R. Elettronica SpA
Via del Fonditore, 2/2c
40138 BOLOGNA
ITALY
Tel. +39 051 6010506

3. First Aid

The personnel employed in the installation, use and maintenance of the device, shall be familiar with theory and practice of first aid.

3.1 Treatment of electrical shocks

3.1.1 If the victim is not responsive

Follow the A-B-C's of basic life support.

  • Place victim flat on his back on a hard surface.
  • Open airway: lift up neck, push forehead back.

Figure 1: Illustration of opening airway by lifting neck and pushing forehead back.

  • Clear out mouth if necessary and observe for breathing.
  • If not breathing, begin artificial breathing: tilt head, pinch nostrils, make airtight seal, four quick full breaths. Remember mouth to mouth resuscitation must be commenced as soon as possible.

Figure 2: Illustration of mouth-to-mouth resuscitation technique.

  • Check carotid pulse; if pulse is absent, begin artificial circulation depressing sternum.

Figure 3: Illustration of checking carotid pulse.
Figure 4: Illustration of hand placement for chest compressions.
Figure 5: Illustration of chest compressions on a torso.

  • In case of only one rescuer, 15 compressions alternated to two breaths.
  • If there are two rescuers, the rhythm shall be of one breath each 5 compressions.
  • Do not interrupt the rhythm of compressions when the second person is giving breath.
  • Call for medical assistance as soon as possible.

3.1.2 If victim is responsive

  • Keep them warm.
  • Keep them as quiet as possible.
  • Loosen their clothing (a reclining position is recommended).
  • Call for medical help as soon as possible.

3.2 Treatment of electrical Burns

3.2.1 Extensive burned and broken skin

  • Cover area with clean sheet or cloth.
  • Do not break blisters, remove tissue, remove adhered particles of clothing, or apply any salve or ointment.
  • Treat victim for shock as required.
  • Arrange transportation to a hospital as quickly as possible.
  • If arms or legs are affected keep them elevated.

If medical help will not be available within an hour and the victim is conscious and not vomiting, give him a weak solution of salt and soda: 1 level teaspoonful of salt and 1/2 level teaspoonful of baking soda to each quart of water (neither hot or cold).

Allow victim to sip slowly about 4 ounces (half a glass) over a period of 15 minutes.

Discontinue fluid if vomiting occurs.

DO NOT give alcohol.

3.2.2 Less severe burns

  • Apply cool (not ice cold) compresses using the cleansed available cloth article.
  • Do not break blisters, remove tissue, remove adhered particles of clothing, or apply salve or ointment.
  • Apply clean dry dressing if necessary.
  • Treat victim for shock as required.
  • Arrange transportation to a hospital as quickly as possible.
  • If arms or legs are affected keep them elevated.

4. Removal from the packing

The package contains:

  • 1 BLUES30NV unit
  • 1 User Manual
  • 1 Mains power cables

The following accessories are also available from Your R.V.R. Dealer:

  • Accessories, spare parts and cables (for more information see chap. 7.3).

4.1 General Description

The BLUES30NV is an exciter for Frequency Modulated audio broadcasting, able to transmit in the band between 87.5 and 108 MHz, in steps of 10 KHz, with an RF output power adjustable up to a maximum of 30 W into a 50 Ohm standard load.

The BLUES30NV is designed to be contained in a 19" rack box of 1HE.

This exciter contains a low-pass filter that reduces the harmonic emissions to below the limits allowed by international regulations (CCIR, FCC or ETSI), and can therefore be used as a transmitter connected directly to the antenna.

Important features of the BLUES30NV are its extreme compactness, great simplicity of construction and use, and the presence of a built-in high-performance stereo coder. The BLUES30NV furthermore was designed to be modular: its various functions are carried out from modules directly connected to each other with male and female connectors or with flat cables ending in connectors. This type of design makes maintenance operations and any required module replacement easier.

The RF power section uses one MOSFET module able to deliver 30 W.

The working frequency is assured by a thermally-compensated, reference oscillator working within a phase-locked loop (PLL). The BLUES30NV reaches frequency lock within a maximum of 30 seconds.

The BLUES30NV is able to work in all range frequency without calibration and setting operations.

The microprocessor system includes an LCD display and push-button panel for interaction with the user, and implements the following functions:

  • Setting of output power
  • Setting of working frequency
  • Setting of Mono or Stereo operation
  • Setting of preemphasis
  • Setting of impedance on Left&Right and MPX channels.
  • Activation and deactivation of power delivery
  • Activation and deactivation of clipper operation
  • Measurement and display of the working parameters of the exciter
  • Communications with external devices

Four LEDs indicate the machine status and are found on the front panel: ON, LOCK, FOLDBACK and RF OFF.

The exciter's management software is based on a menu system. The user can navigate between the various submenus by using the knob (encoder) placed on the front panel.

On the rear panel there are Mains connector, audio input and RF output connectors, telemetry connector, protection fuse, two inputs for modulated signals on subcarriers from special external encoders normally used in Europe for RDS (Radio Data Systems) transmission.

5. Quick guide for installation and use

This chapter contains the necessary information for installing and using the machine. In the event any aspects are not completely clear, for example when using the machine for the first time, it is recommended to carefully read the entire description contained in this manual.

5.1 Preparation

Unpack the exciter and before doing any other operation, be sure it has not been damaged during transport. In particular check that all the connectors are in perfect condition.

The main fuse can be accessed from the outside on the rear panel (see figures 6.2 - [1]). Extract the fuse carrier with a screwdriver to check its integrity or for replacement, if necessary. The fuse to be used is this type:

Mains FuseSize
3.15 A5x20

Check that the BLUES30NV mains switch is in the "OFF" position; it is placed on the front panel and inhibits the switching power supply of the machine.

Connect the RF output of the exciter to the antenna cable or to a dummy load able to dissipate the power generated by the BLUES30NV.

⚠ WARNING: in case the load is not present, do not touch the RF output connector during the equipment operation to avoid electric shock and electrocution.

Connect the mains cable to the proper standard IEC plug, placed on the rear panel (see fig. 6.2 - [2]).

⚠ WARNING: It is necessary that the mains system be provided with grounding to ensure both the operators' safety and correct operation of the equipment.

Connect the audio cable and RDS/SCA of the signal source to the proper input connectors of the BLUES30NV with the indications of the figure 6.2.

5.2 Use

Switch on the exciter by putting the switch, found on the front panel, in the "I" position (on).

Enter the Set menu and set the desired operating frequency and the characteristics (impedance, preemphasis, in case stereo/mono). See chapter 5.4 for a complete description of the various menus.

Through the trimmers placed on the rear panel, set the audio and RDS inputs levels (if used).

NOTE: By factory, it is delivered with the output power adjustment at minimum and in the "OFF" position. It is however recommended that you always check the set level before activating power supply, especially if the machine is used as a modulator for a power amplifier.

Set the desired power level from the predefined menu, as described in chapter 5.4.

Activate the RF power output from the Fnc menu (chap. 5.4.1).

5.2.1 Encoder

The interaction between the user and the exciter control software is performed using the encoder.

Description of Encoder operation: Turning the encoder counterclockwise moves the cursor downwards, decreases a parameter value, or chooses an element from a list. Turning the encoder clockwise moves the cursor upwards, increases a parameter value, or chooses an element from a list. Pushing the button once enters the desired menu; pushing twice modifies the selected parameter.

The operations that can be performed on the encoder are:

  • Rotation: moves the cursor shown on the display; turning the encoder to the left (counterclockwise) moves the cursor downwards, turning it right moves the cursor upwards; it also permits to increase or diminish the parameters (turning the encoder left diminishes the parameter).
  • Pushing: push the button once when the cursor is on the name of a menu to enter that menu; push it when the cursor is on the name of a parameter to enter modification mode (the cursor starts blinking); after the modification of a parameter, push the button to save the new value.

After having modified the value of a parameter, the cursor goes on blinking for approximately 15 seconds, waiting for confirmation from the user. If the user doesn't confirm the new value (i.e., the button is not pressed), the parameter is not saved and remains on the selected parameter.

The first pressure of the ENCODER when the display is light out, or its rotation, serves in order to activate the retroillumination.

5.3 Settings and calibration

The only adjustments to be made manually on the BLUES30NV are those relating to the audio operation levels and modes.

A trimmer for each of the exciter's inputs is on the rear panel of the device. The serigraphy on the panel indicates which input each trimmer refers to. The sensitivity of the various inputs can be adjusted using the trimmers within the limits described in the following tables:

  • Input sensitivity:
InputFigure 6.2 Ref.Trimmer Ref.SensitivityNote
SCA1[12][13]-8 ± 13 dBmInput level for 7.5 kHz overall deviation (-20 dB)
SCA2[10][11]-8 ± 13 dBm
MPX[14][15]-13 ± 13 dBm
Left/Mono[18][16]-13 ± 13 dBmInput level for 75 kHz overall deviation (0 dB)
Right[19][18]-13 ± 13 dBm

To adjust the sensitivity level of the inputs, keep in mind that the instantaneous modulation level is given in the predefined menu and that a hatched bar signals the 75 kHz level. To get a proper adjustment, it is recommended to put a level signal on the machine's output equivalent to the level of its own audio program and adjust the relative trimmer until the instantaneous deviation coincides with the indication of 75 kHz.

To adjust the levels of the inputs of the subcarriers, a similar procedure can be used while getting help from the "x10" option that can be selected from the Fnc menu. With this option, the modulation level indicated is multiplied by a factor 10 so the drawn indication of the predefined menu coincides with a deviation value of 7.5 kHz.

A special menu is present in which the Right and Left channel levels are indicated separately with the relative indicators of the nominal levels for the maximum deviation of 75 kHz.

The regulations of preemphasis, of impedance on L&R and MPX inputs, and of equipment operation modality are operations feasible through the menù Set. For more information, consult chapter 5.4.4.

5.4 Software

The machine is provided with a two-line LCD display where a set of menus is shown.

An overall view of the machine's menus is given in figure 5-1.

One of the following symbols may be present on the left side of the display, depending on the case:

  • ► (Cursor) - The cursor identifies the selected menu where you can have access.
  • ► (Full arrow) - The parameter highlighted by the arrow can be modified. This symbol is present in menus composed of more than two lines to help scroll the menu.
  • ►►► (Three empty arrows) - The parameter highlighted by the arrows is in phase of modification.
  • ▷ (Empty Arrow) - The arrow points out the current line, the parameter of which cannot be modified. This symbol is present in the menus made up of more than two lines to help scroll the menu.

When turned on, the LCD display shows the predefined screen with the graphic representation of the instantaneous modulation level and indication of the direct power supplied:

Menu 1: Display showing "Mod: ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||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BLUES30NV FM Exciter User Manual

Volume 1

Document Information

  • File Name: BLUES30NV_ING.P65
  • Version: 1.0
  • Date: 22/05/2005

Revision History

DateVersionReasonEditor
22/05/051.0First VersionJ. Berti

Copyright and Contact Information

© Copyright 2005

R.V.R. Elettronica SpA
Via del Fonditore 2/2c - 40138 - Bologna (Italia)

All rights reserved. Printed and bound in Italy. No part of this manual may be reproduced, memorized or transmitted in any form or by any means, electronic or mechanic, including photocopying, recording or by any information storage and retrieval system, without written permission of the copyright owner.

Notification of Intended Purpose and Limitations of Product Use

This product is an FM transmitter intended for FM audio broadcasting. It utilizes operating frequencies not harmonized in the intended countries of use. The user must obtain a license before using the product in the intended country of use. Ensure respective country licensing requirements are complied with. Limitations of use can apply in respect of operating frequency, transmitter power and/or channel spacing.

Declaration of Conformity

Hereby, R.V.R. Elettronica SpA, declares that this FM transmitter is in compliance with the essential requirements and other relevant provisions of Directive 1999/5/EC.

ⒸⒺⒾ

1. Preliminary Instructions

This manual is written as a general guide for those having previous knowledge and experience with this kind of equipment, well conscious of the risks connected with the operation of electrical equipment.

It is not intended to contain a complete statement of all safety rules which should be observed by personnel in using this or other electronic equipment.

The installation, use and maintenance of this piece of equipment involve risks both for the personnel performing them and for the device itself, that shall be used only by trained personnel.

R.V.R. Elettronica SpA doesn't assume responsibility for injury or damage resulting from improper procedures or practices by untrained/unqualified personnel in the handling of this unit.

Please observe all local codes and fire protection standards in the operations of this unit.

⚠ WARNING: always disconnect power before opening covers or removing any part of this unit.

Please observe all local codes and fire protection standards in the operations of this unit.

⚠ WARNING: this device can irradiate radio frequency waves, and if it's not installed following the instructions contained in the manual and local regulations it could generate interferences in radio communications.

This is a "CLASS A" equipment. In a residential place this equipment can cause hash. In this case can be requested to user to take the necessary measures.

R.V.R. Elettronica SpA reserves the right to modify the design and/or the technical specifications of the product and this manual without notice.

2. Warranty

Any product of R.V.R. Elettronica is covered by a 24 (twenty-four) month warranty.

For components like tubes for power amplifiers, the original manufacturer's warranty applies.

R.V.R. Elettronica SpA extends to the original end-user purchaser all manufacturers warranties which are transferrable and all claims are to be made directly to R.V.R. per indicated procedures.

Warranty shall not include:

  1. Re-shipment of the unit to R.V.R. for repair purposes;
  2. Any unauthorized repair/modification;
  3. Incidental/consequential damages as a result of any defect;
  4. Nominal non-incidental defects;
  5. Re-shipment costs or insurance of the unit or replacement units/parts.

Any damage to the goods must be reported to the carrier in writing on the shipment receipt.

Any discrepancy or damage discovered subsequent to delivery, shall be reported to R.V.R. Elettronica within 5 (five) days from delivery date.

To claim your rights under this warranty, you should follow this procedure:

  1. Contact the dealer or distributor where you purchased the unit. Describe the problem and, so that a possible easy solution can be detected.

Dealers and Distributors are supplied with all the information about problems that may occur and usually they can repair the unit quicker than what the manufacturer could do. Very often installing errors are discovered by dealers.

  1. If your dealer cannot help you, contact R.V.R. Elettronica and explain the problem. If it is decided to return the unit to the factory, R.V.R. Elettronica will mail you a regular authorization with all the necessary instructions to send back the goods;
  2. When you receive the authorization, you can return the unit. Pack it carefully for the shipment, preferably using the original packing and seal the package perfectly. The customer always assumes the risks of loss (i.e., R.V.R. is never responsible for damage or loss), until the package reaches R.V.R. premises. For this reason, it is suggested to insure the goods for the whole value. Shipment must be effected C.I.F. (PREPAID) to the address specified by R.V.R.'s service manager on the authorization.

DO NOT RETURN UNITS WITHOUT OUR AUTHORIZATION AS THEY WILL BE REFUSED.

  1. Be sure to enclose a written technical report where mention all the problems found and a copy of your original invoice establishing the starting date of the warranty.

Replacement and warranty parts may be ordered from the following address. Be sure to include the equipment model and serial number as well as part description and part number.

Service Address:
R.V.R. Elettronica SpA
Via del Fonditore, 2/2c
40138 BOLOGNA
ITALY
Tel. +39 051 6010506

3. First Aid

The personnel employed in the installation, use and maintenance of the device, shall be familiar with theory and practice of first aid.

3.1 Treatment of electrical shocks

3.1.1 If the victim is not responsive

Follow the A-B-C's of basic life support.

  • Place victim flat on his back on a hard surface.
  • Open airway: lift up neck, push forehead back.

Figure 1: Illustration of opening airway by lifting neck and pushing forehead back.

  • Clear out mouth if necessary and observe for breathing.
  • If not breathing, begin artificial breathing: tilt head, pinch nostrils, make airtight seal, four quick full breaths. Remember mouth to mouth resuscitation must be commenced as soon as possible.

Figure 2: Illustration of mouth-to-mouth resuscitation technique.

  • Check carotid pulse; if pulse is absent, begin artificial circulation depressing sternum.

Figure 3: Illustration of checking carotid pulse.
Figure 4: Illustration of hand placement for chest compressions.
Figure 5: Illustration of chest compressions on a torso.

  • In case of only one rescuer, 15 compressions alternated to two breaths.
  • If there are two rescuers, the rhythm shall be of one breath each 5 compressions.
  • Do not interrupt the rhythm of compressions when the second person is giving breath.
  • Call for medical assistance as soon as possible.

3.1.2 If victim is responsive

  • Keep them warm.
  • Keep them as quiet as possible.
  • Loosen their clothing (a reclining position is recommended).
  • Call for medical help as soon as possible.

3.2 Treatment of electrical Burns

3.2.1 Extensive burned and broken skin

  • Cover area with clean sheet or cloth.
  • Do not break blisters, remove tissue, remove adhered particles of clothing, or apply any salve or ointment.
  • Treat victim for shock as required.
  • Arrange transportation to a hospital as quickly as possible.
  • If arms or legs are affected keep them elevated.

If medical help will not be available within an hour and the victim is conscious and not vomiting, give him a weak solution of salt and soda: 1 level teaspoonful of salt and 1/2 level teaspoonful of baking soda to each quart of water (neither hot or cold).

Allow victim to sip slowly about 4 ounces (half a glass) over a period of 15 minutes.

Discontinue fluid if vomiting occurs.

DO NOT give alcohol.

3.2.2 Less severe burns

  • Apply cool (not ice cold) compresses using the cleansed available cloth article.
  • Do not break blisters, remove tissue, remove adhered particles of clothing, or apply salve or ointment.
  • Apply clean dry dressing if necessary.
  • Treat victim for shock as required.
  • Arrange transportation to a hospital as quickly as possible.
  • If arms or legs are affected keep them elevated.

4. Removal from the packing

The package contains:

  • 1 BLUES30NV unit
  • 1 User Manual
  • 1 Mains power cables

The following accessories are also available from Your R.V.R. Dealer:

  • Accessories, spare parts and cables (for more information see chap. 7.3).

4.1 General Description

The BLUES30NV is an exciter for Frequency Modulated audio broadcasting, able to transmit in the band between 87.5 and 108 MHz, in steps of 10 KHz, with an RF output power adjustable up to a maximum of 30 W into a 50 Ohm standard load.

The BLUES30NV is designed to be contained in a 19" rack box of 1HE.

This exciter contains a low-pass filter that reduces the harmonic emissions to below the limits allowed by international regulations (CCIR, FCC or ETSI), and can therefore be used as a transmitter connected directly to the antenna.

Important features of the BLUES30NV are its extreme compactness, great simplicity of construction and use, and the presence of a built-in high-performance stereo coder. The BLUES30NV furthermore was designed to be modular: its various functions are carried out from modules directly connected to each other with male and female connectors or with flat cables ending in connectors. This type of design makes maintenance operations and any required module replacement easier.

The RF power section uses one MOSFET module able to deliver 30 W.

The working frequency is assured by a thermally-compensated, reference oscillator working within a phase-locked loop (PLL). The BLUES30NV reaches frequency lock within a maximum of 30 seconds.

The BLUES30NV is able to work in all range frequency without calibration and setting operations.

The microprocessor system includes an LCD display and push-button panel for interaction with the user, and implements the following functions:

  • Setting of output power
  • Setting of working frequency
  • Setting of Mono or Stereo operation
  • Setting of preemphasis
  • Setting of impedance on Left&Right and MPX channels.
  • Activation and deactivation of power delivery
  • Activation and deactivation of clipper operation
  • Measurement and display of the working parameters of the exciter
  • Communications with external devices

Four LEDs indicate the machine status and are found on the front panel: ON, LOCK, FOLDBACK and RF OFF.

The exciter's management software is based on a menu system. The user can navigate between the various submenus by using the knob (encoder) placed on the front panel.

On the rear panel there are Mains connector, audio input and RF output connectors, telemetry connector, protection fuse, two inputs for modulated signals on subcarriers from special external encoders normally used in Europe for RDS (Radio Data Systems) transmission.

5. Quick guide for installation and use

This chapter contains the necessary information for installing and using the machine. In the event any aspects are not completely clear, for example when using the machine for the first time, it is recommended to carefully read the entire description contained in this manual.

5.1 Preparation

Unpack the exciter and before doing any other operation, be sure it has not been damaged during transport. In particular check that all the connectors are in perfect condition.

The main fuse can be accessed from the outside on the rear panel (see figures 6.2 - [1]). Extract the fuse carrier with a screwdriver to check its integrity or for replacement, if necessary. The fuse to be used is this type:

Mains FuseSize
3.15 A5x20

Check that the BLUES30NV mains switch is in the "OFF" position; it is placed on the front panel and inhibits the switching power supply of the machine.

Connect the RF output of the exciter to the antenna cable or to a dummy load able to dissipate the power generated by the BLUES30NV.

⚠ WARNING: in case the load is not present, do not touch the RF output connector during the equipment operation to avoid electric shock and electrocution.

Connect the mains cable to the proper standard IEC plug, placed on the rear panel (see fig. 6.2 - [2]).

⚠ WARNING: It is necessary that the mains system be provided with grounding to ensure both the operators' safety and correct operation of the equipment.

Connect the audio cable and RDS/SCA of the signal source to the proper input connectors of the BLUES30NV with the indications of the figure 6.2.

5.2 Use

Switch on the exciter by putting the switch, found on the front panel, in the "I" position (on).

Enter the Set menu and set the desired operating frequency and the characteristics (impedance, preemphasis, in case stereo/mono). See chapter 5.4 for a complete description of the various menus.

Through the trimmers placed on the rear panel, set the audio and RDS inputs levels (if used).

NOTE: By factory, it is delivered with the output power adjustment at minimum and in the "OFF" position. It is however recommended that you always check the set level before activating power supply, especially if the machine is used as a modulator for a power amplifier.

Set the desired power level from the predefined menu, as described in chapter 5.4.

Activate the RF power output from the Fnc menu (chap. 5.4.1).

5.2.1 Encoder

The interaction between the user and the exciter control software is performed using the encoder.

Description of Encoder operation: Turning the encoder counterclockwise moves the cursor downwards, decreases a parameter value, or chooses an element from a list. Turning the encoder clockwise moves the cursor upwards, increases a parameter value, or chooses an element from a list. Pushing the button once enters the desired menu; pushing twice modifies the selected parameter.

The operations that can be performed on the encoder are:

  • Rotation: moves the cursor shown on the display; turning the encoder to the left (counterclockwise) moves the cursor downwards, turning it right moves the cursor upwards; it also permits to increase or diminish the parameters (turning the encoder left diminishes the parameter).
  • Pushing: push the button once when the cursor is on the name of a menu to enter that menu; push it when the cursor is on the name of a parameter to enter modification mode (the cursor starts blinking); after the modification of a parameter, push the button to save the new value.

After having modified the value of a parameter, the cursor goes on blinking for approximately 15 seconds, waiting for confirmation from the user. If the user doesn't confirm the new value (i.e., the button is not pressed), the parameter is not saved and remains on the selected parameter.

The first pressure of the ENCODER when the display is light out, or its rotation, serves in order to activate the retroillumination.

5.3 Settings and calibration

The only adjustments to be made manually on the BLUES30NV are those relating to the audio operation levels and modes.

A trimmer for each of the exciter's inputs is on the rear panel of the device. The serigraphy on the panel indicates which input each trimmer refers to. The sensitivity of the various inputs can be adjusted using the trimmers within the limits described in the following tables:

  • Input sensitivity:
InputFigure 6.2 Ref.Trimmer Ref.SensitivityNote
SCA1[12][13]-8 ± 13 dBmInput level for 7.5 kHz overall deviation (-20 dB)
SCA2[10][11]-8 ± 13 dBm
MPX[14][15]-13 ± 13 dBm
Left/Mono[18][16]-13 ± 13 dBmInput level for 75 kHz overall deviation (0 dB)
Right[19][18]-13 ± 13 dBm

To adjust the sensitivity level of the inputs, keep in mind that the instantaneous modulation level is given in the predefined menu and that a hatched bar signals the 75 kHz level. To get a proper adjustment, it is recommended to put a level signal on the machine's output equivalent to the level of its own audio program and adjust the relative trimmer until the instantaneous deviation coincides with the indication of 75 kHz.

To adjust the levels of the inputs of the subcarriers, a similar procedure can be used while getting help from the "x10" option that can be selected from the Fnc menu. With this option, the modulation level indicated is multiplied by a factor 10 so the drawn indication of the predefined menu coincides with a deviation value of 7.5 kHz.

A special menu is present in which the Right and Left channel levels are indicated separately with the relative indicators of the nominal levels for the maximum deviation of 75 kHz.

The regulations of preemphasis, of impedance on L&R and MPX inputs, and of equipment operation modality are operations feasible through the menù Set. For more information, consult chapter 5.4.4.

5.4 Software

The machine is provided with a two-line LCD display where a set of menus is shown.

An overall view of the machine's menus is given in figure 5-1.

One of the following symbols may be present on the left side of the display, depending on the case:

  • ► (Cursor) - The cursor identifies the selected menu where you can have access.
  • ► (Full arrow) - The parameter highlighted by the arrow can be modified. This symbol is present in menus composed of more than two lines to help scroll the menu.
  • ►►► (Three empty arrows) - The parameter highlighted by the arrows is in phase of modification.
  • ▷ (Empty Arrow) - The arrow points out the current line, the parameter of which cannot be modified. This symbol is present in the menus made up of more than two lines to help scroll the menu.

When turned on, the LCD display shows the predefined screen with the graphic representation of the instantaneous modulation level and indication of the direct power supplied:

Menu 1: Display showing "Mod: [modulation bar] Fwd: 30 W". The vertical bars under "Mod" indicate the progress of the modulation in real time; the hatched bar signals the maximum nominal modulation level at 75 kHz (100%).

To change the set power level, keep the ENCODER pressed for about 5 seconds until it enters the modification mode.

The screen that is shown in the modification mode is similar to the following:

Menu 2: Display showing "SET: [set level bar] Fwd: 30 W". The bottom line gives the instantaneous reading of the power (30W in this example), whereas the bar indicates the set level. To increase the level rotate towards right, to reduce it rotate towards left. When the desired level is reached, press the ENCODER to confirm and exit to the predefined menu. Note that the set value is stored anyway, so if you pass the time-out without pressing a key, the power will remain at the last set level.

The first pressure of the ENCODER when the display is light out, or its rotation, serves in order to activate the retroillumination.

The pressure of ENCODER when the display is switched on, while in the predefined menu, serves in order to show the following selection screen from which all other menus can be accessed:

Menu 3: Display showing "Fnc Pwr P.A Set Mix Urs L&R Esc". This is the selection menu.

If you instead want to go back to the predefined menu, select the ESC entry then push the ENCODER.

To enter into one of the submenus, select its entry (which will be underlined by a blinking cursor) with the rotation and then press the ENCODER.

Figure 5-1: Diagram illustrating the complete menu structure of the BLUES30NV equipment. It shows the flow from Menu 1 (Predefined menu) to Menu 3 (Selection Menu), and then branching out to:

  • Menu 4 (Operation Menu): Pwr, Mod, PgD, PgR, Exit.
  • Menu 5 (Power Menu): Fwd, Rfl, Exit.
  • Menu 6 (Power Amplifier Menu): Vpa, Ipa, Eff, Tmp, Exit.
  • Menu 7 (Settings Menu): F1, Pwr, Pre, Imp (L&R), Imp (MPx), Aud, Cli, Exit.
  • Menu 8 (Miscellaneous Menu): IIC, FSK, Cod, Exit.
  • Menu 9 (Versions Menu): Rel, Dat, Tab, Exit.
  • Menu 10 (Channels Menu): L, R, Exit.

If the temperature alarm is enabled, the power supply will be inhibited if the alarm threshold is exceeded, and the following window will be displayed only in the predefined screen:

Status 1: Display showing "‼ ATTENTION ‼ OVER TEMPERATURE".

Once normal operation conditions are restored, the power supply will be re-enabled with the same modalities as before the alarm.

If the modulation ran out, under 20 kHz, for about 5 minutes (not modifiable), the NO AUDIO status is displayed in the predefined screen, but the power is not inhibited:

Status 2: Display showing "Mod: NO AUDIO Fwd: 0 W".

5.4.1 Operation Menu (Fnc)

From this menu the user can enable or disable the exciter power supply, set the deviation display modality and set up the percentage of Forward (PgD) or Reflected Power Good (PgR).

Menu 4: Display showing "►Pwr: ON Mod: x10 PgD: 50% PgR: 5% Exit".

  • Pwr: Enables (On) or disables (Off) the power supply of the exciter.
  • Mod: Display modality of the modulation selectable between x1 and x10. The indication of the instantaneous deviation is multiplied by a factor 10 in the x10 mode, so the hatched indicator on the predefined menu will coincide with the 7.5 kHz value instead of 75 kHz. This display mode is useful when viewing low deviation levels such as pilot tone or subcarriers.
  • PgD: Regulation of the Power Good threshold relative to the forward power. The percentage value of Power Good is referred to the nominal power of the machine, which is 30 W, not to the supplied forward power. If a value equal to 50% is set, it will correspond indifferently to 15 W from the set up power. The Power Good function is a control and alarm function on the supplied power. When the output power falls under the threshold value of Power Good set, the machine modifies the pin state [7] of "Remote" DB15 connector on the rear panel (figure 6.2 note-[8]).
  • PgR: Regulation of the Power Good threshold relative to the forward power. The percentage value of Power Good is referred to the nominal power of the machine, which is 10W, not to the supplied forward power. If a value equal to 5% is set, it will correspond to 500 mW indifferently from the set up power.
NOTE: This alarm does not have effect on any output signal on the DB15 "Remote" connector, placed on the rear panel of the equipment, and it works only in presence of systems equipped of telemetry.
  • Exit: The entry allows the user to promptly exit from the current submenu and return to the predefined menu.

5.4.2 Power Menu (Pwr)

This screen shows the user the measures relating to the exciter RF power output.

The values shown are readings, and therefore cannot be modified (note the empty arrow). To modify the power setting, use the predefined menu, as described above.

Menu 5: Display showing "▷Fwd: 30 W Rfl: 12 W Exit".

  • Fwd: Visualization of the Forward Power (Fwd).
  • Rfl: Visualization of the Reflected Power (Rfl).
  • Exit: The entry allows the user to promptly exit from the current submenu and return to the predefined menu.

5.4.3 Power Amplifier Menu (P.A)

This screen, consisting of four lines that can be scrolled with the rotation of the ENCODER, shows the user the measures relating to the final power amplifier of the equipment:

Menu 6: Display showing "▷Vpa: 24.2 U Ipa: 1.9 A Eff: 55% Tmp: 27 °C Exit".

  • VPA: Visualization of the amplifier module voltages.
  • IPA: Visualization of the amplifier module current.
  • Eff: Visualization of the efficiency as ratio between the forward and reflected power of the amplifier module, expressed in percentage (FWD Pwr/(Vpa x Ipa)%).
  • Tmp: Visualization of the inner temperature of the machine.
  • Exit: The entry allows the user to promptly exit from the current submenu and return to the predefined menu.

5.4.4 Settings Menu (Set)

This menu allows reading the working power and setting the working frequency, the preemphasis, the MPX and L&R channel impedance, the audio and clipper modality.

Menu 7: Display showing "►F1: 98.00MHz Pwr: 10.8 W Pre: 50 us Imp: 600 L&R Imp: 50 MPx Aud: STEREO Cli: ON Exit".

  • F1: Regulation of set up frequency. After setting a new frequency value, press the ENCODER to confirm the choice. The exciter will release from the current frequency (the LOCK LED turns off) and it will latch onto the new operating frequency (LOCK turns back on). Instead, if ESC is pressed or the timeout goes by, the frequency will remain set at the previous value.
  • Pwr: Visualization of the set up power. In order to modify the power regulation, use the predefined menu like previously described or the Set menu.
  • Pre: Regulation of the preemphasis, selectable between 0 µs, 50 µs and 75 µs.
  • Imp (L&R): Regulation of the Left and Right channel input impedance, selectable between 10 KΩ or 600 Ω.
  • Imp (MPX): Regulation of the MPX channel input impedance, selectable between 10 KΩ or 50 Ω.
  • Aud: Regulation of audio modality selectable between STEREO and MONO.
  • Cli: Enable or disable the clipper operation.
  • Exit: The entry allows the user to promptly exit from the current submenu and return to the predefined menu.

5.4.5 Miscellaneous Menu (Mix)

This menu allows setting the machine's address in a serial bus connection (I²C type).

The exciter normally does not come supplied with FSK option inserted. For this reason the parameters connected to it are not modifiable and are represented by ===. In case the option FSK were present in the supplied version, carefully read chapter 5.5.1.

Menu 8: Display showing "IIC: 255 FSK: === Cod: === Exit".

  • IIC: Regulation of the I²C address. The I²C network address is important when the exciter is connected to a company's transmission system that envisages use of this protocol. It is recommended not to modify it without a good reason.
  • FSK: Enable or disable the transmission of the FSK code.
  • Cod: Visualization of the code normally transmitted.
  • Exit: The entry allows the user to promptly exit from the current submenu and return to the predefined menu.

5.4.6 Versions Menu (Vrs)

This screen shows the version and the release date of the software.

Menu 9: Display showing "▷Rel: BLUE-123456 Dat: 19/03/2004 Tab: BLU-1234-56 Exit".

  • Rel: Visualization of the software release.
  • Dat: Visualization of the date release.
  • Tab: Visualization of the release of the configurations table loaded in memory.
  • Exit: The entry allows the user to promptly exit from the current submenu and return to the predefined menu.

5.4.7 Channels Menu (L&R)

The right and left channel input levels are depicted with horizontal bars. The hatched pointer indicates the level that corresponds with the total deviation at 100%, and is useful to regulate the input levels of the audio channels.

Menu 10: Display showing "▷L: 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BLUES30NV 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 30 W into a 50 Ohm standard load.Models: 1-BLUES30NV, BLUES30NV FM Transmitter, FM Transmitter, Transmitter


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