PTRL & RXRL LCD - RVR Elettronica SpA Documentation Server
Contents
1. 7 4 Front pannel of the RXRL LCD 5 6 O Tia RXRL LCD ani S PI MUTE gs a ESC e ENTER oe eo PTT Ti 7 9 10 Figure 7 4 1 AIR FLOW Grid for the air flow 2 ON Green LED illuminato when the transmitter is feeded 3 LOCK If it is on indicates that the VCO is locked at the reference frequency 4 PILOT yellow LED if it is flashing it indicates that there is a disfunction in the demodulated signal 5 MUTE yellow LED if it is flashing it indicates that the muting is 6 CONTRAST 7 ESC 8 SINISTRA SU 9 DESTRA GIU 10 ENTER 11 DISPLAY 12 POWER Rev 1 2 31 01 05 activated which means that the input signal has decreased under the defined threshold Regulation Trimmer of the contrast of the display Push button to press to exit from a menu Push button for the navigation in the system composed of several menus and for the modification of the parameters Push button for the navigation in the system composed of several menus and for the modification of the parameters Push button for the confirmation of a parameter and to enter the menus Liquid crystal display ON OFF switch It switches off the exciter without disconnecting the AC supply User Manual AYA ELETA PTRL amp RXRL LCD 7 5 Rear pannel of the RXRL LCD 1 2 3 4 5 6 7 8 9 MAINS VOLTAGE R F INPUT 50 Q MUTE SCA MPX OUT SCA OUT SCA OUTADJ RIGHT MONOAD2. After a new frequency value was setted press the ENTER button to confirm the choice the exciter will unlock from the current frequency the LED LOCK switches off and will lock to the new working frequency the LOCK LED lits up On the contrary when you press ESC or when you let the timeout passes by the frequency will remain setted at the last value memorized 6 4 3 Aud menu Aud The levels of the inputs of the left and right channels are represented by vertical bars as indicated in the following illustration eLO INNI a LLALLA LLULLA The hachured bar indicates the level which corresponds to the global deviation of 100 of the channels 6 4 4 Mix menu Mix This menu enables to set the path of the unit on a serial bus connection of the type C IIC H37 The 1 C AC path is important when the exciter is connected to an RVR transmission system which allows the use of this protocol We recommend not to modify it with no reason User Manual Rev 1 2 31 01 05 21 44 PTRL amp RXRL LCD AAN 6 4 5 Versions menu Vrs This view shows the version of the unit and the date to the software release e Rel 02016306 Dat 1202042003 22 44 Rev 1 2 31 01 05 User Manual ELETA R R PTRL amp RXRL LCD 7 External Description This chapter describes the elements which are present on the front and rear pannel of the PTRL LCD and the RXRL LCD 7 1 Front Panel of the PTRL LCD 6 DIO IK TRA uri PTRL LCD x v
3. PTRL amp RXRL LCD 7 6 Description of the connectors 7 6 1 RS 232 Type DB9 female 0 DO NODODDSWWNA 7 6 2 Remote NC TX_D RX_D Internally connected to 6 GND Internally connected to 4 Internally connected to 8 Internally connected to 7 NC Type DB15 female OONDAARWNDH Interlock FWD fold GND SDA IIC Bus VPA Tim FWD tlm Power Good GND GND RFL fold SCL IIC Bus IPA Tim RFL Tim On cmd OFF cmd 7 6 3 Left MONO Right MPX 28 44 Type XLR female GND Positive Negative Rev 1 2 31 01 05 User Manual ELETA RW PTRL amp RXRL LCD 8 Specifiche Tecniche 8 1 Caratteristiche meccaniche Dimensions of the panel 483 mm 19 x 88 mm 3 1 2 2 HE Depth 344 mm 26 1 2 Weight About 6 Kg Working temperature 10 C 50 C 8 2 Electrical characteristics of the PTRL LCD General RFoutput power 0 10 W continuously selectable RF output connector Type N RF output impedance 50 Ohm Frequency band 220 240 MHz 420 440 MHz 900 960 MHz Other frequency bands are available unpon request please contact RVR to know the availability of modules for the required frequency Programmation of the frequency Direct through software Frequency stability 1ppm from 10 C to 50 C Type of modulation Direct modulation of the carrier Supression of the spuries and harmonics Respect or exceed the FCC amp CCIR typical 75 dB Ability of modulation Res
4. VCO PLL 10 7 Telemetry card 11 Procedure for change frequency of the radio link 11 1 Introduction 11 2 Frequency Alignment ii Rev 1 2 31 01 05 User Manual NT PTRL amp RXRL LCD 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 Use appropriate grounding procedures to short out capacitors and high voltage points before servicing 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 communicatio
5. different components 1 VCO PLL AUDIO IN Card 2 Telemetry card 3 Power Amplifier 4 Power Supply Card 5 Pannel Card 6 Monitoring card 7 Reducing card User Manual Rev 1 2 31 01 05 33 44 PTRL amp RXRL LCD RVR 9 1 9 2 34 44 LAT A schematic view of the modules and of the connections which compose the PTRL LCD is shown in the following illustration PANEL CARD MAIN CARD POWER AMPLIFIER CONTROL CARD REDUCING CARD POWER SUPPLY 24V 12V RF CONNECTION DC CONNECTION A brief description of the functions of each module will follow while the complete schemes and the layouts of the cards are shown in the appendix Power supply The power supply of the PTRL LCD is a switching unit whose 24V main output will formerly be reduced in order to supply the RF stage of the unit The stabilizers for the 5V and 18V continuous voltage generation for the supply of the other circuits of the unit are present on the power supply Please note that the power supply is direct from the AC line therefore without transformer and it can be connected to any of the voltages comprised between 100 and 230 V without making any regulations or manual settings The auxiliary 24V continuous voltage inputs are connected to the power supply and intervene automatically in order to collide with possible AC supply absences
6. output power Setting of the working frequency e Activation and switch off of the power distribution e Measurement and display of the working parameters of the transmitter Communication with external devices These functions are implemented for the receiver e Display of the modulation Setting of the working frequency Setting of the muting Measurement and display of the working parameters of the receiver e Communication with external devices The system of the management software is composed of several menus The user can navigate between the different submenus by using four push buttons ESC LEFT HIGH RIGHT LOW and ENTER The status of the unitis indicated by four LEDs which are present on the front pannel ON LOCK FOLDBACK RF MUTE for the PTRL LCD e ON LOCK PILOT MUTE for the RXRL LCD Both the transmitter and the receiver have an input for the external 24 Vcc supply This auxiliary supply source that can be realized by the user with the help of rescue batteries is automatically used in case of AC voltage absence Rev 1 2 31 01 05 User Manual RVR PTRL amp RXRL LCD 5 PTRL LCD quick guide for installation and use This chapter contains the necessary instructions for the installation and use of the equipment In case some aspects are not totally clear for instance when a user is using this equipment for the first time we advise the new user to read carefully the entire description contain
7. subcarriers As indicated in the introduction the transmitter offers the possibiliy to the user to set the attention threshold This latter is compared to the level of one of the functioning parameters of the unit The result of the comparison is available on the telemetry connector and can be read on the display as O which means open that is to say the result is wrong or C which means closes therefore the result is true The threshold that can be setted Power Good refers to the transmitted power level The threshold is expressed in percentage of the full scale of the considered size The full scale of the monitored size of the attention threshold for the PTRL LCD is e Forward Power 10 W In order to change the values of the attention thresholds the following procedure should be followed e Select the line that should be modified with the UP and DOWN buttons e Press the ENTER button e Modify the value of the threshold UP and DOWN buttons Press the ENTER button In this example the alarm threshold is e PwG 9W 90 x 10 W 5 4 2 Pwr menu Pwr This view shows to the user the measurements corresponding to the power erogation of the exciter e Forward Power Fwd e Reflected Power Rfl FF ied 45 0 kfl H 5 ll User Manual Rev 1 2 31 01 05 13 44 PTRL amp RXRL LCD IRA AR 5 4 3 5 4 4 5 4 5 14 44 ELETA The values indicated are readings and therefore cannot be modified
8. then press the ENTER button If on the contrary you wish to return to the predefined menu you just have to press again the ESC push button In some cases on the left side of the menu an arrow can appear lt means that it is necessary to indicate the current line selected When the arrow is full the parameter can be modified while when it is empty the parameter can only be viewed REMARK The L amp R menu is available only in the stereo version In the mono version the L amp R inscription do not appear Functioning menu Fnc Food x1 Pur OF Fu 50 From this menu the user can set the deviation display mode he can switch on or inhibit the power erogation of the transmitter and he can modify the attention threshold Rev 1 2 31 01 05 User Manual ST PTRL amp RXRL LCD In order to intervene on one of the three keys select the corresponding line with the UP and DOWN buttons and then press and keep the ENTER button pressed until the order is accepted In this way the Pwr setting will go from On to Off or viceversa and the Mod setting will go from X1 to X10 or viceversa In X10 mode the indication of the instantaneous deviation is multiplied by 10 this is why the hachured indicator on the predefined menu coincides with the 7 5 kHz value instead of 75 kHz This visualization mode is useful when the user wants to have low deviation levels displayed for instance when they are provoked by the pilot tone or the
9. 2 RIGHT MONOADJ 13 RIGHT MONO 14 PLUG 15 24VDC IN 16 FAN 17 R F TEST POINT 18 REMOTE 19 EXT REF 10MHz 20 RS232 21 19KHZ PILOT 22 SCA 2 23 SCA2ADJ 24 SCA1 ADJ 25 LEFT MONO MPXADJ 26 LEFT MONO MPX 27 IMPEDANCE Rev 1 2 31 01 05 QI letra 99 22 232425 26 27 Figure 7 2 Fuse holder Contains the protection fuse for the 3 15 A power supply RF Output connector N type 500 BNC interlock connector When the main conductor is grounded the transmitter is forced to go in stand by mode Trimmer for the control of the erogated power in function of the FWD Fold input Trimmer for the control of the erogated power in function of the RFL Fold input Trimmer for the regulation of the pilot tone phase Dip switch for the setting of the preenphasis 50 or 75 us The preenphasis has an influence on the right and left inputs in stereo and on the mono input The MPX inputs are not influenced by the setting ofthe preenphasis Dip switch for the selection both of the transmission mode STEREO or MONO and the impedance of the MPX input MPX selectable at 500 or 10kQ BNC connector of the unbalanced SCA1 input BNC connector of the unbalanced MPX input Trimmer for the regulation of the levels of the MPX input Trimmer for the regulation of the levels of the Right input XLR connector for the input of the Right audio channel AC voltage plug 90 260V 50 60Hz Connectors
10. De emphasis of the mono channel e Separation of the mono MPX and SCA channels e Measurement of the demodulating signal 10 4 2 Audio input stage stereo version There are two 15KHz filters for the filtering of both L and R channels and an integrated stereo The other functions are the same as in the mono version 10 5 Front End Tis card receives the RF signal filters it amplifies it and mix it in the mixer section with the signal coming from the VCO PLL User Manual Rev 1 2 31 01 05 39 44 PTRL amp RXRL LCD 10 6 10 7 40 44 The signal obtained comes sended to IF card for successive elaborations VCO PLL This card receives the signal which is equivalent to the setted frequency which comes from the CPU of the panel card In order to realize the operations it is necessary to have a splitter which processes the information received and sends them back to the PLL stage Telemetry card This device was designed to give indications to the user concerning the functioning status of the unit All the available input and output signals of the unit are indicated on the DB15 connector On the same card there is an INTERLOCK BNC connector which switches off the device When the central pin is grounded the output power is reduced to zero until the grounding connection is removed When it is used with an RVR amplifier this connector is connected to the REMOTE or INTERLOCK of the power amplifier with a BNC BNC conne
11. Frequency stability Maximum RF input signal Intermediary Frequencies A C supply C C supply Outputs Mono Right Ouput Mono Left Output MPX OUT output Output impedance Output level Deemphasis SCA OUT and SCA MPX outputs Type N 50 Ohm 220 240 MHz 420 440 MHz 900 960 MHz Other frequency bands are available unpon request please contact RVR to know the availability of modules for the required frequency 50 Ohm Direct through software 1ppm from 10 C to 50 C 23 dBm 10 7 MHz 700 KHz 85 V 264 V full range 24V XLR female type balanced or unbalanced XLR female type balanced or unbalanced BNC type unbalanced 10 kOhm or 600 Ohm selectable by DIP switch 20 dBm 13 dBm fine continuous regulation by trimmer Selectable 0 50 us CCIR 75 us FCC 2 unbalanced connectors BNC type Impedance of the SCA OUT amp SCA MPX outputs 10 kOhm Level of the SCA OUT amp SCA MPX outputs 10 7 MHz IF OUT Inputs RF Input MONO Functioning S N FM User Manual 20 dBm 13 dBm for a 2 0 kHz deviation adjustable by trimmer BNC type connector standard connector N type with 50 Ohms impedance gt 68dB against a 75KHz deviation with 50 us deenphasis detector RMS at 400 Hz Rev 1 2 31 01 05 31 44 PTRL amp RXRL LCD Amplitude response frequency Total armonic distorsion THD MPX Functioning Composite S N FM Amplitude response frequency MPX Total armonic MPX distors
12. J MONO RIGHT 24VDC IN 10 REMOTE 11 RS232 12 10 7 MHz IF OUT 13 MPX OUT 14 MPX OUTADJ 15 SCA MPX OUT ADJ 16 MONO LEFT ADJ 17 MONO LEFT 18 DEENPHASIS User Manual Figure 7 4 Plug for the AC voltage 85 264V 50 60Hz RF input connector N type 500 BNC interlock connector for the muting of the audio outputs with an external command BNC connector for the unbalanced SCA or MPX output BNC connector for the unbalanced SCA OUT output Trimmer for the regulation of the SCA OUT output Trimmer for the regulation of the RIGHT MONO output levels XLR connector for the audio channel Mono or Right output Connectors for the external 24V power supply Positive red and negative black DB15 connector for the telemetry of the device DB9 connector for the interface with other devices and for the programmation made by the factory BNC output connector for the 10 7 MHz sampling for tests BNC output connector for the unbalanced MPX Trimmer for the regulation of the MPX OUT input levels Trimmer for the regulation of the SCA MPX input levels Trimmer for the regulation of the MONO LEFT input levels XLR connectors for the MONO or LEFT audio channel input Dip switch for the setting of the deenphasis 50 or 75 ms The deenphasis has an influence on the right and left outputs in stereo mode and on the mono input The MPX outputs are not influenced by the setting of the preenphasis Rev 1 2 31 01 05 27 44
13. MHz New fq User Manual Rev 1 2 31 01 05 43 44 PTRL amp RXRL LCD This page was intentionally left blank 44 44 Rev 1 2 31 01 05 User Manual
14. PTRL amp RXRL LCD User Manual Volume 1 CEO ELETTRONICA Manufactured by M W MM Italy File name CAPITOLI _EN P65 Version 1 2 Date 31 01 2005 Revision History Date Version Reason Editor 12 01 04 1 0 New Version J Berti 02 06 04 1 1 PTRL LCD Rear Panel Upgrade J Berti 31 01 05 1 2 Added Chapter 11 J Berti PTRL amp RXRL LCD User Manual Version 1 2 Copyright 2003 2005 R V R Elettronica SpA Via del Fonditore 2 2c 40138 Bologna ltalia Telephone 39 051 6010506 Fax 39 051 6011104 Email info rvr it Web www rvr it 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 a FM transmitter intended for FM audio broadcasting It utilises operating frequencies not harmonised in the intended countries of use The user must obtain a license before using the product in intended country of use Ensure respective country licensing requirements are complied with Limitations of use can apply in respect of operating freuency transmitter power and or channel spacing Declaration of Conformity Hereby R V R Elettronica SpA declares tha
15. RXRL LCD are the regulations of the levels and audio functioning modes On the rear pannel of the unit there is a trimmer for each output of the receiver The sensitivity of the different outputs can be regulated with the trimmers as indicated in the following tables e Sensitivity of the inputs Output Chap 7 5 Trimmer Sensitivity Notes MPX 13 14 20 13 dBm Output level for 2 0 kHz 30 dB of deviation SCA 5 6 8 13 dBm Output level for 7 5 kHz 20 dB of SCA MPX 4 15 8 13dBm deviation Left 17 16 10 14 dBm Output level for 75 kHz 0 dB of Mono MPX deviation Right Mono 8 7 10 14 dBm In order to regulate the sensitivity level of the inputs it is important to keep in mind that the instantaneous modulation level is indicated in the predefined menu and that an indicator indicates that the level is at 75 kHz For a correct regulation we advise to bring a signal equivalent to the signal level of your own audio programme into the input of the unit and regulate the corresponding trimmer until the instantaneous deviation coincides with the 75 kHz indication For the regulation of the levels of the sub carriers outputs a similar procedure can be followed with the help of the option X10 which can be selected from the menu Fnc With this option the indicated modulation level is multiplied per the factor 10 so that the hachured indication of the predefined men
16. Reducing card The reducing card transforms the voltage coming from the switching power supply from 24V to 12 V which is the necessary voltage for the supply of the RF power stage of the unit Rev 1 2 31 01 05 User Manual NT PTRL amp RXRL LCD 9 3 Pannel card The pannel card contains the microprocessor PIC16F877Q which implements the monitoring software of the unit the display and the other elements which are necessary for the interface with the user This card is the interface with the other modules of the unit both for the distribution of the supply units and monitoring and for the measurements 9 4 Monitoring card The monitoring card provides for the management of the readings and the regulation of the parameters referring to the direct and forward power monitors the gain and the FOLDBACK input and it surveys the internal temperature of the unit The card works as an interface between the panel card and the final stage for the power regulation the protection the readings and the remote monitorings 9 5 Main card The main card has the following functions e Processing of the audio and SCA inputs e Generation of the carrier e Modulation R F Amplifier Driver The difference between the Mono and Stereo versions of this card is the audio stage since the stereo version contains a stereophonic coder 9 5 1 Audio input stage mono version The audio input stage contains the circuits which realize the fol
17. SCA2 for signals which are modulated on sub carriers by appropriated external coders normally used in Europe for the RDS transmission Radio Data System In the standard version of the RXRL LCD the demodulated signal is available in the MPX form that is to say the complete basis signal band and in the mono version Moreover there are two connectors used for the respective SCA outputs As an option the RXRL LCD can be equipped with a stereo decoder option Also when this option is present apart from the outputs for the LEFT and RIGHT channels the outputs for the MPX signal are present and for the possible sub carriers The important audio characteristics of this equipment are the low distorsion and intermodulation values and the high S N level another important quality both of the PTRL LCD and the RXRL LCD is its very simple construction and its easy use User Manual Rev 1 2 31 01 05 7 44 PTRL amp RXRL LCD 8 44 LAT Both the PTRL LCD and the RXRL LCD were designed in a modular way the different functions are executed by modules connected directly with male and female connectors or with flat cables with connectors at both ends This type of design makes the maintenance and the possible replacement of modules an easy operation The microprocessor system includes an LCD display and series of push buttons that enable the interaction with the user and implements the following functionsfor the transmitter e Setting of the
18. a cable Connect the AC cable to the corresponding VDE socket LE REMARK Itis essential that the AC network has an accurrate grounding system in order to ensure both the safety of the users and the correct functioning of the unit If the user intends to use external batteries in case of AC supply interruption connect them to the clamps situated at the back of the equipment being careful to respect the polarity LE WARNING Keep in mind that the general switch of the transmitter has an effect on the AC supply and not on the possible auxiliary supply If you use an external supply with continuous current it is then necessary to have an external switch for this purpose Connect the audio cables of your own audio signal to the apropriate connectors situated at the back of the exciter User Manual Rev 1 2 31 01 05 17 44 PTRL amp RXRL LCD 6 2 6 3 18 44 Use Switch on the receiver by putting the selector on the position I on the switch situated on the rear pannel Enter the menu Set and set the working frequency desired For the description of the different menus read the chapter 6 4 With the help of the switches and trimmers situated on the rear pannel set the characteristics deenphasis and the levels of the audio outputs From the predefined menu set the desired power level From the menu Fnc set the power output Settings and calibration The only regulations that should be done manually on the
19. 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 R V R Elettronica SpA Aaa via del Fonditore 2 2c 40138 BOLOGNA ITALY Tel 39 051 6010506 4 44 Rev 1 2 31 01 05 User Manual PTRL amp RXRL LCD 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 backon a hard surface Open airway lift up neck push forehead back Fig 3 1 clear out mouth if necessary and observe for breathing if not breathing begin artificial breathing Figure 3 2 tilt head pinch nostrils make airtight seal four quick full breaths Remember mouth to mouth resuscitation must be commenced as soon as possible Figure 3 1 Figure 3 2 Check carotid pulse Fig 3 3 if pulse is absent begin artificial circulation Fig 3 4 depressing sternum Fig 3 5 User Manual Figure 3 3 Figure 3 4 Figure 3 5 In case of only one rescuer 15 compressions alternated to two breaths If there are two rescuers the rythm shall be of one brath each 5 compressions Do not interrupt the rythm of compressions when the second person is giving breath Call for medical assistance as soon as possible R
20. aneous reading of the signal level received on analog scale while the bar indicates the setted level In order to increase the level keep the RIGHT DOWN button pressed in order to reduce it press the LEFT UP button As the setted level increases or decreases the bar gets longer or shorter in order to enable the display of the current setting Once the desired level is reached press ENTER to confirm and exit the predefined menu Please note that the setted value is anyway memorized therefore when you press ESC or when the timeout period is passed and no button was pressed the power will remain on the last setted level User Manual Rev 1 2 31 01 05 19 44 PTRL amp RXRL LCD 6 4 1 20 44 When you press twice on the ESC button while you are in the predefined menu the following selection view is displayed and from this view it will be then possible to enter to all the other menus Fie Set Aud Mix Wes To enter one of the submenus select the name that will be enhanced by a flashing cursor with the RIGHT or LEFT push buttons and then press the ENTER button If on the contrary you wish to return to the predefined menu you just have to press again the ESC push button In some cases on the left side of the menu an arrow can appear It indicates that it is necessary to indicate the current line selected When the arrow is full the parameter can be modified while when it is empty the parameter can only be viewed Fun
21. ctioning menu Fnc Mod x1 HF MUTE OFF From this menu the user can set the deviation display mode he can switch on or inhibit the muting mode In order to intervene on one of the three keys select the corresponding line with the UP and DOWN buttons and then press and keep the ENTER button pressed until the order is accepted In this way the Pwr setting will go from On to Off or viceversa and the Mod setting will go from X1 to X10 or viceversa In X10 mode the indication of the instantaneous deviation is multiplied by 10 this is why the hachured indicator on the predefined menu coincides with the 7 5 kHz value instead of 75 kHz This visualization mode is useful when the user wants to have low deviation levels displayed for instance when they are provoked by the pilot tone or the subcarriers As indicated in the introduction the transmitter offers the possibiliy to the user to set the muting mode MUTE OFF indicates that the muting was not activated therefore the received signal is situated at the audio outputs MUTE ON indicates that the muting is activated therefore the audio outputs are muted Rev 1 2 31 01 05 User Manual RT PTRL amp RXRL LCD 6 4 2 Set menu Set This menu enables to read and set the working frequencies Fi 95 SEBMHz When you press the ENTER button it will be possible to modify the setted frequency with the UP the frequency increases and DOWN the frequency decreases
22. ctor In case of failure of the amplifier the central wire is grounded by forcing the unit to enter in stand by mode Rev 1 2 31 01 05 User Manual LARA PTRL amp RXRL LCD 11 Procedure for change frequency of the radio link 11 1 Introduction This chapter introduces the procedures of alignment between the transmitter PTRL LCD and the receiver RXRL LCD For the PTRL LCD itis only necessary to program the new frequency through the Set men See Cap 5 4 4 11 2 Frequency Alignment In order to realize this alignment it is possible to follow the following operations 1 Connect the equipment as shown below Poi VARIABLE PTLR LCD ATTENUATOR RXRL LCD POW gt 10W I F OUTPUT 10 7 MHz OSCILLOSCOPE amp FREQUENCY COUNTER 2_ Switch on the transmitter and wait until it has locked to its operating frequency and the LOCK light goes on In order to control or to modify the working frequency go to Set menu see chap 5 4 4 3 Adjust the variable attenuator for a value dependent from the transmitters output power Having the power approximately of 10W 40dBm regulate the variable attenuator on a value comprised between 63dB to have in input of the receiver the 27dBm 10mV demands Eventually reduce the power of the transmitter until to attain level 0 4_ Check the presence of holes on the top cover and follow the instructions described below 1 Incase the holes are not present on the cov
23. d card carry the RF value to full scale express as bar in the predefined menu see chap 6 4 or connect the oscilloscope to IF 10 7MHz output Chap 7 5 12 and check to obtain the maximum level possible Hod s INNI HEF A IU ULIVI VIVINVIVKVKKKIKKKKKKKK 6 Diminish gradually the signal level injected continuing to adjust for the maximum value the level of the IF 10 7MHz Repeat this operation until that the signal injected from the generator does not achieve the level of 47dBm 1mV or minor in order to optimize the calibration In any case the full scale must be at the level of 47dBm In both cases is advisable in order to facilitate the operation carry out the movement to subsequent step that is in the case that the difference between the new frequency and that old one is gt MHz to carry out one first perfunctory calibration on one intermediate frequency between the old one and the new in the following comes described an example Old fq 942 MHz New fq 957 MHz Intermediate step at 948 MHz and 950 MHz and then complete alignment to the frequency of 950MHz This in order to avoid to exit completely from the resonance curves of the tuning circuits complicating therefore the research of the tuning on the new frequency This example can be used subdividing the procedure in step of frequency more bring closer for example Old fq 942 MHz Step 1 945 MHz Step 2 948 MHz Step 3 953 MHz Step 4 957
24. d out so as obtain the maximum indication pay attention to maintain the input signal level adjustable by the attenuator under the saturation threshold of the indicator full scale mark Eventually to reduce ulteriorly the input level through the attenuator or reducing the power of the transmitter optimizing ulteriorly the calibration of the compensators 7 Inthe case it had been necessary traslate the cover once completed the regulation replace the cover in its initial condition with feeding disabled or not connected and fix it through the screws In alternative it is possible to align the following bridge also in way 1 Connect the equipment as shown below R F R F R F Output Input SIGNAL RXRL LCD GENERATOR 2 Inject through the signal generator connected to RF a signal to 10 dBm with same frequency as that working frequency of the receiver 42 44 Rev 1 2 31 01 05 User Manual RVR PTRL amp RXRL LCD ELETA 3 Switch on the receiver and wait until that the lock has not happened on the working frequency LOCK led lit on In order to control or to modify that the working frequency is same to that one of the transmitter go to the Set men see cap 6 4 2 4 Check the presence of holes on the top cover and operate on the basis of conditions as previously described in the point 4 5 Check and obtain the maximum sensibility adjusting through the compensators situate on the Front En
25. e to the software release FRe 92010300 Dat 1220420403 5 4 7 Channels menu L amp R This menu works on stereo version units The input levels of the right and left channels are represented by vertical bars as indicated in the following illustration EL siii Pe DEUD The hachured bar indicates the level which corresponds to the global deviation of 100 of the channels User Manual Rev 1 2 31 01 05 15 44 PTRL amp RXRL LCD Pagina lasciata intenzionalmente in bianco 16 44 Rev 1 2 31 01 05 User Manual ST PTRL amp RXRL LCD 6 RXRL LCD quick guide for installation and use This chapter contains the necessary instructions for the installation and use of the equipment In case some aspects are not totally clear for instance when a user is using this equipment for the first time we advise the new user to read carefully the entire description contained in this manual 6 1 Preparation Unpack the transmitter and check before making any operation that the unit has not suffered from any mishandling during transport In particular check that all the connectors are in perfect conditions Check that the supply voltage value coincides with the AC voltage available The input supply field is of e RXRLLCD 85 264 V Check that the switches of the RXRL LCD are in the position 0 off The RXRL LCD has a switch which interrupts completely the AC supply of the unit Connect the RF output of the exciter to the antenn
26. ece O 2 O MADE IN ITALY BOLOGNA et le O O Figure 7 1 1 AIR FLOW Grid for the air flow 2 ON Green LED illuminato when the transmitter is feeded 3 LOCK If it is on indicates that the PLL is locked at the reference frequency 4 FOLDBACK yellow LED if it is flashing it indicates the intervention of the foldback function automatic reduction of the erogated power 5 R F MUTE If it is flashing it indicates that the exciter is not erogating power because it is inhibitted by an external interlock 6 CONTRAST Regulation Trimmer of the contrast of the display 7 ESC Push button to press to exit from a menu 8 SINISTRA SU Push button for the navigation in the system composed of several menus and for the modification of the parameters 9 DESTRA GIU Push button for the navigation in the system composed of several menus and for the modification of the parameters 10 ENTER Push button for the confirmation of a parameter and to enter the menus 11 DISPLAY Liquid crystal display 12 POWER ON OFF switch It switches off the exciter without disconnecting the AC supply User Manual Rev 1 2 31 01 05 23 44 PTRL amp RXRL LCD 7 2 Rear pannel of the PTRL LCD 24 44 1 PABLOCK 2 R F OUTPUT 3 INTERLOCK 4 FWDEXT AGC 5 RFLEXT AGC 6 PHASE ADJ 7 PREENPHASIS 8 MODE MPX IMP 9 SCA1 10 MPX RDS 11 MPX RDSADJ 1
27. ed in this manual 5 1 Preparation Unpack the transmitter and check before making any operation that the unit has not suffered from any mishandling during transport In particular check that all the connectors are in perfect conditions Check that the supply voltage value coincides with the AC voltage available The input supply field is of e PTRLLCD 90 260 Vc Check that the switches of the PTRL LCD are in the position 0 off The PTRL LCD has 2 switches one is included in the VDE socket for the AC supply cable and interrupts completely the AC supply of the unit while the second is situated on the front pannel and his action is to inhibit the switching power supply of the unit Connect the RF output of the exciter to the antenna cable or to a dummy load adapted for the working frequency and the power output used Connect the AC cable to the corresponding VDE socket C REMARK It is essential that the AC network has an accurrate grounding system in order to ensure both the safety of the users and the correct functioning of the unit If the user intends to use external batteries in case of AC supply interruption connect them to the clamps situated at the back of the equipment being careful to respect the polarity C WARNING Keep in mind that the general switch of the transmitter has an effect on the AC supply and not on the possible auxiliary supply If you use an external supply with continuous current it is then necessa
28. er For some models is indispensable open the cover of the receiver to can work directly on the compensators Unscrew the screws of the top cover with the feeding disabled or not connected With the free cover translate it laterally towards right of approximately 10 cm to can proceed to the regulations on the front end that it is situated in the left side of the machine Reconnect the CA feeding and proceed with the operations described in the point 5 User Manual Rev 1 2 31 01 05 41 44 PTRL amp RXRL LCD RVR C NOTE The partial opening of the cover is necessary in order to avoid that the operator can come in contact with potentially harmful parts for the presence of high voltage current 2 In case the holes are present on the cover On the more recent models the holes are present directly on the cover This allows to carry out the regulation avoiding the opening of the cover proceed with the operations described in the point 5 5 Switch on the receiver and wait until it has locked to its operating frequency and the LOCK light goes on In order to check or to modify that the working frequency is the same as that one of the transmitter go to the Set menu see chap 6 4 2 6 Connect the oscilloscope to the IF 10 7MHz output chap 7 5 12 and verify to obtain the maximum possible level regulating through the compensators situates on the front end card The calibration of the front end compensators will be carrie
29. es the elimination of the armonic emissions A directional coupler enables the reading of the direct and forward power of the load such signals are then sent to the monitoring card for the necessary controls The reading of the direct power is also indicated on the panel card in order to enable the display of the data on the LCD screen situated on the front panel Telemetry card This device was designed to give indications to the user concerning the functioning status of the unit All the available input and output signals of the unit are indicated on the DB15 connector On the same card there is an INTERLOCK BNC connector which switches off the device When the central pin is grounded the output power is reduced to zero until the connection is removed When it is used with an RVR amplifier this connector is connected to the REMOTE or INTERLOCK of the power amplifier with a BNC BNC connector In case of failure of the amplifier the central wire is grounded by forcing the unit to enter in stand by mode Rev 1 2 31 01 05 User Manual INAN PTRL amp RXRL LCD 10 Functioning principles of the RXRL LCD The RXRL LCD is composed of several modules connected between them with the help of connectors with the aim to ease the maintenance and the possible replacement of modules The above description shows the top view of the unit with the indication of the different components 1 IF Card 2 Telemetry card 3 Power Amp
30. ev 1 2 31 01 05 5 44 PTRL amp RXRL LCD 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 6 44 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 Rev 1 2 31 01 05 User Manual NT PTRL am
31. for the external 24V supply Positive red or negative black Blower for the forced cooling 30dB output at the output power level DB15 connector for the telemetry of the device Not used reserved for future applications DB9 connector for the interface with other equipment and programmation made by the factory BNC output connector for the pilot tone which can be used for the synchronisation of the external devices such as RDS coder etc BNC connector for the SCA2 input Trimmer for the regulation of the SCA2 input levels Trimmer for the regulation of the SCA1 input levels Trimmer for the regulation of the LEFT MONO input levels XLR connector for the LEFT MONO audio channel input Dip switch for the selection of the impedance of the balanced audio inputs selectable at 600Q or 10kQ User Manual INAN ELETA PTRL amp RXRL LCD 7 3 Description of the connectors 7 3 1 RS 232 Type DB9 female 0 O NODDSWWN 7 3 2 Remote NC TX_D RX_D Internally connected to 6 GND Internally connected to 4 Internally connected to 8 Internally connected to 7 NC Type DB15 female O DONDOUIOSWWNA Interlock FWD fold GND SDA IIC Bus VPA Tim FWD tlm Power Good GND GND RFL fold SCL IIC Bus IPA Tim RFL Tim On cmd OFF cmd 7 3 3 Left MONO Right MPX Type XLR female 1 User Manual GND Positive Negative Rev 1 2 31 01 05 25 44 PTRL amp RXRL LCD IRA A
32. ion Stereo Functioning S N FM Amplitude response audio frequency Total armonic distorsion Remote connections Mute connector Serial interface Telemetry connector 0 3 dB 40 Hz 15 KHz lt 0 4 gt 68 dB against a 75KHz measured in the 40 Hz 75 KHz band with deenphasis 50 us detector RMS 0 3 dB 40 Hz 75 KHz lt 0 4 gt 62 dB against a 75KHz deviation with deenphasis 50 us detector RMS at 400 Hz 0 3 dB 40 Hz 15 KHz lt 04 BNC type inhibits the power erogation when it is short circuited Female DB9 RS232 DB15 type female supplies indications on the status of the unit 8 4 Electrical characteristics of the PTRL RXRL LCD Mono Functioning S N FM Total armonic distorsion THD MPX Functioning Total armonic distorsion THD Stereo Functioning S N FM Total armonic distorsion THD 32 44 Rev 1 2 31 01 05 gt 65dB against a 75KHz measured in the 40 Hz 15KHz band with deenphasis 50 us detector RMS lt 0 4 lt 0 4 gt 60dB against a 75KHz measured in the 40 Hz 15KHz band with deenphasis 50 us detector RMS lt 0 4 User Manual INAN PTRL amp RXRL LCD 9 Functioning principles of the PTRL LCD The PTRL LCD is composed of several modules connected between them with the help of connectors with the aim to ease the maintenance and the possible replacement of the modules The above description shows the top view of the unit with the indication of the
33. is 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 2 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 3 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 we suggest you 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 User Manual Rev 1 2 31 01 05 3 44 PTRL amp RXRL LCD 4 Besuretoenclose 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
34. lifier 4 Front end VCO Card 5 Pannel Card 6 Power supply interface Card User Manual Rev 1 2 31 01 05 37 44 PTRL amp RXRL LCD RVR 10 1 10 2 38 44 ELETA A schematic view of the modules and of the connections which compose the RXRL LCD is shown in the following illustration PANEL CARD BATTERY INTERFACE IF AUDIO OUT VCO PLL FRONTEND POWER SUPPLY RF CONNECTION DC CONNECTION A brief description of the functions of each module will follow while the complete schemes and the layouts of the cards are shown in the appendix Power supply The power supply of the RXRL LCD is a switching unit whose 24V main output will formerly be reduced in order to supply the RF stage of the different electronic boards which compose the unit The power supply of the RXRL LCD is a switching type unit with 5V 18V and 15V main outputs which will be adapted to supply the different electronic boards which compose the unit Please note that the power supply is direct from the AC line therefore without transformer and it can be connected to any of the voltages comprised between 85 and 264 V without making any regulations or manual settings Power supply interface Ther interface card filters and stabilizes the voltages coming from the power supply to the 5 V_ and 18 V e continuous voltages which are neces
35. lowing functions e Selection of the input impedance e 15 kHz filtering of the mono channel e Preenfasis of the mono channel e Mixing of the mono MPX and SCA channels e Clipper limits the level of the modulating signal so that the frequency deviation does not exceed the 75 kHz level e Measurement of the modulating signal 9 5 2 Audio input stage stereo version Two 15Khz filters are present in this card for the filtering of both Left and Right channels and an integrated stereophonical generator The other functions are the same in the mono version User Manual Rev 1 2 31 01 05 35 44 PTRL amp RXRL LCD 9 5 3 9 5 4 9 5 9 6 36 44 PLL VCO stage This stage of the card generates the modulated radiofrequency signal Itis based on a PLL scheme which uses an integrated PLL model MB15E06 Driver stage Before going through the final stage power amplifier the RF signal is preamplified in this stage by the BFR540 transistor When the exciter is in stand by the driver is inhibited Power Amplifier The power stage is mounted on a heatsink which enables the dissipation of the generated heat which is contained in a totally shielded metallic box fixed in the central part of the bottom back of the unit The RF signal coming from the VCO at a level of around 10mW reaches the pilot stage BFR96 and is amplified from the final stage BGY925 up to 10W The signal goes through a low pass filter which provid
36. ns 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 User Manual Rev 1 2 31 01 05 1 44 PTRL amp RXRL LCD This page was intentionally left blank 2 44 Rev 1 2 31 01 05 User Manual RVR PTRL amp RXRL LCD 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 Any unauthorized repair modification Incidental consequential damages as a result of any defect Nominal non incidental defects a A OO N 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 shold follow th
37. opriate menu in which the levels of the right and left channels with the corresponding nominal level indicators for the maximum 75Khz deviation are indicated separately The position of the DIP switches that are needed to select the available options is indicated on the silk screen e Preenphasis switch 7 Chap 7 2 50 us 75 us Impedance of L amp R inputs XLR type switch 27 Chap 7 2 Switch 1 Impedance of R XLR ON input 600 Q OFF 10 kQ Switch 2 Impedance of L XLR ON input 600 Q OFF 10 kQ Functioning modes Impedance of MPX input 8 Chap 7 2 Switch 1 Functioning mode ON Mono OFF Stereo Switch 2 impedance of MPX ON input 50 Q OFF 10 kQ 5 4 Software The unit is equipped with an LCD display with 2 lines on which several menus are shown A general view of the menus of the unit are shown in the illustration On the left side of the display depending on the case one of the following symbols can be present F The parameter indicated by the arrow can be modified The arrow indicates the current line whose parameter cannot be modified This symbol is present in the menus composed of several lines as an help for the scrolling of the menus When the unit is switched on the LCD display shows the predefined view with the graphical representation of the instantaneous modulation level and the indication of the value of the direct power erogated Mo s III FF ied 16 8 i Use
38. p RXRL LCD 4 General description The PTRL LCD and the RXRL LCD are respectively a broadband radio transmitter and receiver for the transport of audio signals as an auxiliary to the frequency modulation sound broadcasting This type of equipment is often called STL Studio to Transmitter Link The PTRL LCD is designed to work in an optimum way when connected to the receiver RXRL LCD Externally it is a box to mount in a 19 rack each one being 2HE high The standard working frequency bands are the following e 220 MHz 240 MHz 5KHz steps e 420 MHz 440 MHz 5KHz steps e 900 MHz 960 MHz 5KHz steps The working frequency and therefore the band should be indicated when the order for such product is placed TE WARNING upon request these links are available at other frequency bands and steps please contactact RVR in order to check the availability of modules at the required frequency The PTRL LCD is available with internal stereo coder which can guarantee an optimum stereophonic separation as well as a low level of armonic distorsion In function of your own requirements it can be configurated for the functioning under the Mono MPX mode that is to say when excluding the stereo coder and when using the left inputs as a mono input and the BNC which is always on as MPX The configuration can be done by the user with the help of microswitches which can be selected from the outside It has also two inputs SCA1 and
39. pect or exceed the FCC amp CCIR typical 240khz MPX or Mono 210 KHz Stereo Asynchronous modulation AM residual 70 dB or inferior against 100 AM without deenphasis Synchronous modulation AM residual 50 dB or inferior against 100 AM FM modulation 75 kHz at 400Hz without deenphasis Transitory intermodulation distorsion lt 0 1 typical 0 05 measured with square wave at 3 18 kHz and sinusoidal at 15 kHz with a 75 kHz FM A C supply 80 V 260 V full range C C supply 24V Consumption 120 VAca Inputs Left Mono MPX input XLR female type balanced or unbalanced Right Mono input XLR female type balanced or unbalanced MPX RDS input BNC type unbalanced Input Impedance 10 kOhm or 600 Ohm selectable through DIP switch Input Level 20 dBm 13 dBm continuous fine regulation by trimmer Preemphasis Selectable 0 50 us CCIR 75 us FCC User Manual Rev 1 2 31 01 05 29 44 PTRL amp RXRL LCD SCA1 and SCA2 inputs 2 connectors BNC type unbalanced Ilmpedance of the SCA1 and SCA2 inputs 10 kOhm Level of the SCA1 and SCA2 inputs Outputs RF Out RF Test Tono pilota 19 KHz MONO Functioning S N FM 200 MHz S N FM 400 MHz S N FM 900 MHz Amplitude response frequency Total armonics distorsion THD MPX Functioning Composite FM S N 20 dBm 13 dBm for a 2 0 kHz deviation adjustable by trimmer standard connector N type with impedance 50 Ohm BNC connector approx level 30 dB agains
40. r Manual Rev 1 2 31 01 05 11 44 PTRL amp RXRL LCD IRA AR 5 4 1 12 44 ELETA The vertical bars near the title Mod indicate the progress of the modulation in real time the hachured bar indicates the maximum 75 kHz nominal modulation level 100 In order to change the power level setted select with the push button GIU the line which corresponds to the power and keep the ENTER button pressed until you enter the modify mode The above line displays the instantaneous power reading in this example 10W while the bar indicates the setted level In order to increase the level keep the DESTRA GIU button pressed in order to reduce it press the SINISTRA SU button As the setted level increases or decreases the bar gets longer or shorter in order to enable the display of the current setting Once the desired level is reached press ENTER to confirm and exit the predefined menu Please note that the setted value is anyway memorized therefore when you press ESC or when the timeout period is passed and no button was pressed the power will remain on the last setted level When you press twice on the ESC button while you are in the predefined menu the following selection view is displayed and from this view it will be then possible to enter to all the other menus Fnc Pur F A Set Mix Ure L amp R To enter one of the submenus select the name that will be enhanced by a flashing cursor with the RIGHT or LEFT push buttons and
41. remark the empty triangle In order to modify the power setting use the predefined menu as described formerly Power Amplifier menu P A This view composed of three lines that can be scrolled with the UP and DOWN buttons shows to the user the values corresponding to the power amplifier of the unit Voltage VPA e Absorbed current IPA PUPS 1 Ira i po CO Gi DI Men Impostazioni Set This menu enables to read and set the working frequencies Fi 95 GGGNHZ When you press the ENTER button it will be possible to modify the setted frequency with the UP the frequency increases and DOWN the frequency decreases After a new frequency value was setted press the ENTER button to confirm the choice the exciter will unlock from the current frequency the LED LOCK switches off and will lock to the new working frequency the LOCK LED lits up On the contrary when you press ESC or when you let the timeout passes by the frequency will remain setted at the last value memorized Mix menu Mix This menu enables to set the path of the unit on a serial bus connection of the type IPC IIC 5 The 1 C AC path is important when the exciter is connected to an RVR transmission system which allows the use of this protocol We recommend not to modify it with no reason Rev 1 2 31 01 05 User Manual PMR PTRL amp RXRL LCD 5 4 6 Versions Menu Vrs zThis view shows the version of the unit and the dat
42. ry to have an external switch for this purpose Connect the audio cables of your own audio signal to the apropriate connectors situated at the back of the exciter User Manual Rev 1 2 31 01 05 9 44 PTRL amp RXRL LCD 5 2 5 3 10 44 Use Switch on the transmitter by putting the selector on the position I on the switch situated on the pannel and switch it on thanks to the switch situated on the front pannel Enter the menu Set and set the working frequency desired For the description of the different menus read the chapter 5 4 With the help of the switches and trimmers situated on the rear pannel set the characteristics impedance preenphasis and possibly stereo mono and the levels of the audio inputs and RDS if used REMARK When it comes out of the factory the output power of the unit is regulated at the minimum and is setted on the OFF position Anyway we always advise to check the setted level before you select the output power especially when the unit is used as modulator of a power amplifier From the predefined menu set the desired power level From the menu Fnc set the power output Settings and calibration The only regulations that should be done manually on the PTRL LCD are the regulations of the levels and audio functioning modes On the rear pannel of the unit there is a trimmer for each input of the exciter the silk screnn of the pannel indicated to which input each trimmer refer
43. s to The sensitivity of the different inputs can be regulated with the trimmers as indicated in the following tables e Sensitivity of the inputs Input Chap 7 2 Trimmer Sensitivity Notes MPX RDS 10 11 20 13 dBm Input level for 2 0 kHz 30 dB of deviation SCA1 9 24 8 13 dBm Inputlevel for 7 5 kHz 20 dB of SCA2 22 23 8 13dBm deviation Left 26 25 13 13 dBm Input level for75 kHz 0 dB of deviation Mono MPX Right Mono 13 12 13 13 dBm In order to regulate the sensitivity level of the inputs it is important to keep in mind that the instantaneous modulation level is indicated in the predefined menu and that an indicator indicates that the level is at 75 kHz For a correct regulation we advise to bring a signal equivalent to the signal level of your own audio programme into the input of the unit and regulate the corresponding trimmer until the instantaneous deviation coincides with the 75 kHz indication Rev 1 2 31 01 05 User Manual CRT PTRL amp RXRL LCD For the regulation of the levels of the sub carriers inputs a similar procedure can be followed with the help of the option X10 which can be selected from the menu Fnc With this option the indicated modulation level is multiplied per the factor 10 so that the hachured indication of the predefined menu coincides with a deviation value of 7 5 kHz As for the stereo version there is an appr
44. sary for the supply in the circuits of the unit the 24V auxiliary continuous voltage inputs are connected on the Rev 1 2 31 01 05 User Manual MW PTRL amp RXRL LCD power supply interface which is used automatically in order to collide with possible AC supply absences 10 3 Panel card The panel card contains the microprocessor PIC16F877Q which implements the monitoring software of the unit the display and the other elements which are necessary for the interface with the user This card is the interface with the other modules of the unit both for the distribution of the supply units and monitoring and for the measurements 10 4 IF Card The IF card realizes the following functions e Processing of the audio and SCA outputs e Generation of the 10 7MHz signal e Demodulation This circuit receives the 7OMHz signal which is filtered amplified and then passed into a mixer which presents a signal coming from a 59 3MHz chrystal oscillator to the other input The signal 10 7MHz obtained from the difference between these two signals is filtered and amplified an once it is processed it is sent to the front end This card also processes the different audio MONO MPX SCA and RDS signals and sends them together with the muting signal to the Front end card 10 4 1 Audio input stage mono version The audio input stage contains the circuits which realize the following functions e 15KHz filtering of the mono channel e
45. t the RF output impedance 50 Ohm 1 Vpp minimum load 4 7 kOhm gt 80dB against a 75KHz deviation with a 50 us deenphasis detector RMS at 400 Hz gt 75dB against a 75KHz deviation with deenphasis 50 us detector RMS at 400MHz gt 80dB against a 75KHz deviation with a 50 us deenphasis detector RMS at 400 Hz 0 3 dB 40 Hz 15 KHz lt 0 08 gt against 75KHz measured in the 40 Hz 75 KHz band with deenphasis 50 us detector RMS Amplitude response MPX frequency MPX 0 3 dB 40 Hz 75 KHz Armonic distorsion total MPX Stereo Functioning S N FM 200 MHz S N FM 400 MHz S N FM 900 MHz Amplitude response Audio frequency Total armonics distorsion Remote Connections Interlock connector Serial Interface Telemetry connector 30 44 Rev 1 2 31 01 05 lt 0 08 gt 73dB against a 75KHz deviation with a deenphasis 50 us detector RMS at 400 Hz gt 70dB against a 75KHz deviation with deenphasis 50 us detector RMS at 400MHz gt 67dB against a 75KHz deviation with 50 us deenphasis detector RMS at 400 Hz 0 3 dB 40 Hz 15 KHz lt 0 08 BNC type inhibits the power erogation when it is short circuited Female DB9 RS232 Type female DB15 provides indications on the status of the unit User Manual MR PTRL amp RXRL LCD 8 3 Electrical characteristics of the RXRL LCD General RF output connector RF output impedance Frequency band RF input impedance Frequency programmation
46. t this FM transmitter is in compliance with the essential requirements and other relevant provisions of Directive 1999 5 EC CE R W Ra PTRL amp RXRL LCD Table of Contents 1 Preliminary Instructions 1 Warranty 3 3 First Aid 5 3 1 Treatment of electrical shocks 5 3 2 Treatment of electrical Burns 6 4 General description T 5 PTRL LCD quick guide for installation and use 9 5 1 Preparation 9 5 2 Use 10 5 3 Settings and calibration 10 5 4 Software 11 6 RXRL LCD quick guide for installation and use 17 6 1 Preparation 17 6 2 Use 18 6 3 Settings and calibration 18 6 4 Software 19 7 External Description 23 7 1 Front Panel of the PTRL LCD 23 7 2 Rear pannel of the PTRL LCD 24 7 3 Description of the connectors 25 7 4 Front pannel of the RXRL LCD 26 7 5 Rear pannel of the RXRL LCD 27 7 6 Description of the connectors 28 8 Specifiche Tecniche 29 8 1 Caratteristiche meccaniche 29 8 2 Electrical characteristics of the PTRL LCD 29 8 3 Electrical characteristics of the RXRL LCD 31 8 4 Electrical characteristics of the PTRL RXRL LCD 32 9 Functioning principles of the PTRL LCD 33 9 1 Power supply 34 9 2 Reducing card 34 9 3 Pannel card 35 9 4 Monitoring card 35 9 5 Main card 35 9 5 Power Amplifier 36 9 6 Telemetry card 36 User Manual Rev 1 2 31 01 05 i PTRL amp RXRL LCD 10 Functioning principles of the RXRL LCD 10 1 Power supply 10 2 Power supply interface 10 3 Panel card 10 4 IF Card 10 5 Front End 10 6
47. u coincides with a deviation value of 7 5Khz Rev 1 2 31 01 05 User Manual NT PTRL amp RXRL LCD As for the stereo version there is an appropriate menu in which the levels of the of the right and left channels with the corresponding nominal level indicators for the maximum 75Khz deviation are indicated separately The position of the DIP switches that are needed to select the available options is indicated on the silk screen e Deenphasis switch 18 Chap 7 5 50 us n 75 us 6 4 Software The unit is equipped with an LCD display with 2 lines on which several menus are shown A general view of the menus of the unit are shown in the illustration On the left side of the display in function of the cases one of the following symbols can be present F The parameter indicated by the arrow can be modified The arrow indicates the current line whose parameter cannot be modified This symbol is present in the menus composed of several lines as an help for the scrolling of the menus When the unit is switched on the LCD display shows the predefined view with the graphical representation of the instantaneous modulation level and the indication of the value of the direct power erogated Hod s INNI EEF I The vertical bars under the key Mod indicate the progress of the modulation in real time the hachured bar indicates the maximum 75 kHz nominal modulation level 100 The above line displays the instant
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