PTX - LCD - RVR Elettronica SpA Documentation Server
Contents
1. 1 ea SCAe ADJ JP1 LITITITTITITIITIITITIITITIIT ITIITI TITT Figure 11 5 After the necessary processing filtering level regulation selection the audio input section passes the signals to the audio motherboard that route them to the coder card 48 58 Rev 2 3 18 07 07 User Manual ELETTRONICA FM CSPTAUDBNCO3 Figura 11 6 11 3 1 Adjustments settings and indicators D2 On negative power supply voltage present D1 On positive power supply voltage present JP3 3 5 4 6 9 11 10 12 no attenuation con channel L 1 3 2 4 7 9 8 10 12. PILOT LEVEL R52 0000 oonoononn nonnnnn u1 glue 6 5 2 nnonnnnnn annann Figure 11 7 Idr 14d7 J13 RO mD 5 2H Z z BR z J t 2 2 cH a 2 2 al nm 010 t23 219 29 v 9 93 eld pia A 4000 S E evi Figure 11 8 11 4 1 Adjustments settings and indicators Stereo Coder C2 Pilot tone phase C4 Pilot tone frequency R11 Output level stereocoder card R15 Pilottone level R16 stereo separation optimization left channel R17 stereo separation optimization right channel R33 clipper circuit intervention threshold 50 58 Rev 2 3 18
3. o ii Figure 11 3 Rev 2 3 18 07 07 User Manual RW ELETTRONICA PTX LCD 11 1 1 Adjustings settings and indicators The switching mode power supply doesn t need any adjusting while the power supply board features a number of indicators and adjustable components D52 D53 D54 D55 D57 D58 RV1 R17 R18 R30 R35 R39 R51 R98 JP6 lit fault of the power amplifier fuse lit fault of PF1 fuse lit voltage 5V OK lit voltage 15V OK lit voltage 12V OK lit power amplifier power supply OK adjustment of the temperature sensor adjustment of the level for external AGC adjustment of the level for external AGC adjustment of the measurement of PA current adjustment of the maximum PA current adjustment of the measurement of forward power adjustment of the measurement of reflected power adjustment of the measurement of driver stage current 1 3 2 4 the Remote connector pins are used as analog input 3 5 4 6 the Remote connector pins are used for I C communication 11 2 Audio motherboard This board Fig 11 4 is the interface between the audio section boards and the PLL with the other modules of the exciter The audio motherboard is in the lower left part of the exciter Fig 10 1 4 It contains the connectors on which the other boards are directly plugged in This module also contains the circuit mixing MPX signals and
4. 7 2 2 3 Suppl This menu is for information only it displays to the user the different voltages produced by the power supply Figure 7 17 sual general supply voltage of the circuits audio pll coder it is reduced to 8 V on the main audio board 15 supply voltage of the CPU panel 5 power supply s digital circuits voltage 12 general negative supply voltage LAMP supply voltage of the display lamp typical 13 V 5 CPU supply voltage User Manual Rev 2 3 18 07 07 29 58 PTX LCD RYB 1 2 2 4 ee 30 58 ExPwr External amplifier control menu This menu can be available or not depending on the jumpers configuration see 11 7 1 The use of this menu requires the presence of a power amplifier with suitable characteristics it has to be activable and deactivable opening a contact and it has to give back the readings of the forward and reflected power as a couple of voltage proportional to those values External Fower m iW i 7 5 2 x Figure 7 18 PWR status indicator related to the status of PTX LCD MAIN menu FPWR forward power of the amplifier percentage RPWR reflected power of the amplifier percentage ExSts This menu monitors the input voltages on the telemetry connectors This menu can be available or not depending on the jumpers configuration see 11 7 1 Ex us 4 al Ue al WS Bl LW 4 Bl WS Al Jg al Figure 7 1
5. 4 PWR SET OK 5 EXT RF MUTE 6 DISP LAY 7 ENCODER 8 POWER 9 GENERAL 10 UNLOCK 11 SWR User Manual Figura 6 1 Operating indicator indicates that the exciter is transmitting indicates that the exciter is under control of an external system lit the exciter is delivering the set power blinking the exciter didn t reach the set power for external reasons the exciter is not delivering power because of an externa interlock LCD display both graphic 240x64 pixels and text 30x8 characters knob and button to control the management software main switch indicates generic fault when lit indicates that the PLL still haven t locked on the set frequency when lit indicates that the transmitter is disabled for too much SWR Rev 2 3 18 07 07 15 58 PTX LCD 6 2 Rear panel RvR ELETTRONICA als E w EXT AGC r FWD e Corn 1 PLUG 2 24Vdc IN 3 P A Fuse 4 INTERLOCK 5 FAN 6 RF Test 7 LEVEL ADJ 8 MPX Unbal 9 SCA1 10 SCA2 11 SCA3 RDS 12 FUSE 13 Telemetry 14 RS232 15 Remote 16 EXT AGC 17 RF Output 18 Left mono 19 Right MPX 20 Monitor 21 19 kHz pilot 16 58 inteock V 3 8 9 Figura 6 2 mains supply plug connectors for external 24 V dc supply optional Positive red and negative black RF power amplifier protection
6. e Do not break the blisters remove any fabric and parts of clothing that may be attached to the skin apply a suitable ointment e Treat the victim depending on the type of accident e Take the victim to hospital as soon as possible e lf the arms and legs are injured keep them raised If no medical help is available within an hour and the victim is conscious and has not retched administer a liquid solution of salt and bicarbonate of soda 1 teaspoonful of salt to every 250ml of water Get the victim to slowly drink half a glass of the solution four times over a period of 15 minutes Stop the treatment if the victim starts to retch Do not administer alcoholics Less serious burns e Apply cold gauze compresses not iced using a clean cloth i e as clean as possible e Do not break any blisters remove any fabric and parts of clothing that may be attached to the skin apply a suitable ointment e If necessary dress the victim in clean dry clothes e Treat the victim depending on the type of accident e Take the victim to hospital as soon as possible e lf the arms and legs are injured keep them raised Rev 2 3 18 07 07 User Manual nv PTX LCD 4 General Description The PTX LCD is a 19 rack mountable frequency agile FM exciter Its frequency range spans from 87 5 to 108 MHz in 10 kHz steps but other frequencies are available on request The PTX LCD comes in three versions depending on its maximum o
7. Figure 7 8 PilotoO Pilot tone phase not available Pilot Activation deactivation of the pilot tone can be useful for certain measurements Chan0 Phase of the right channel it can be set to O or 180 signal mirroring useful for example to measure the Sub to Main parameter 36 58 Rev 2 3 18 07 07 User Manual ELETTRONICA 8 Technical Specifications PTX LCD 8 1 Mechanical Specifications Panel size 483 mm 19 x 88 mm 3 1 2 2 HE Depth 344 mm 26 1 2 Weight PTX30 13 Kg PTX60 15 5 Kg PTX100 15 5 Kg Temperature range 10 C 50 C 8 2 Electrical Specifications General RF output power PTX30LCD 0 30 W adjustable PTX60LCD 0 60 W adjustable PTX100LCD 0 100 W adjustable RF output connector type N RF output impedance 50 Ohm Frequency range 87 5 MHz 108 MHz Frequency setting direct via software Frequency stability 1ppm from 10 C to 50 C Modulation type Direct carrier modulation Sopressione di spurie e armoniche meets or exceeds FCC e CCIR rules typical 85 dB Modulation capability meets or exceeds FCC e CCIR rules typical 240khz MPX or Mono 210 KHz Stereo Residual async AM 70 dB or less wrt 100 AM no deemphasys Residual sync AM 60 dB or less wrt 100 AM 75 kHz FM at 400Hz no deemphasys Intermodulation distortion Less than 0 1 typ 0 05 measured with a 3 18KHz square wawe 15KHz sinusoidal wawe and 100 modulation Power supply 110 130 V 50 60 Hz 198 250 V
8. The settind Parameters are Freduencyu 22 Ahh MHZ 5 4 If the use pushes the encoder while the message is displayed the exciter will start in stand by mode that is completely working but with RF power disabled If the encoder is not pushed the start up sequence goes on undisturbed At start up the various modifiable parameters will be set as they were before the machine was switched off i e 98 00 MHz and O are just example values the current parameters are in fact always stored in non volatile memory When the settings are not correct for example at the first start up of the machine or if for some reason it is necessary to change some parameters before starting to transmit it is possible to keep the exciter in stand by mode as seen above This operation is necessary only if one wants to modify the device s settings before starting transmitting Using the menu system provided by the PTX LCD described in chapter 7 it is User Manual Rev 2 3 18 07 07 11 58 PTX LCD RYB 5 4 12 58 possible to control all the working parameters of the device Specifically before enabling the power output we suggest to verify and in case to correct according to your needs the fundamental parameters e frequency e power e audio input level e audio input impedance e preemphasys e kind of audio input depending on the version MONO or MPX or MONO MPX_U MPX_B STEREO e ifin STEREO mode verify that pilot
9. PTX LCD RYB 11 5 1 11 6 52 58 SECTION OPT2 OPTI 78 Pes C86 Re B O RV R80 B4 R63 32 m Ref R74 cg Pe R3 83 c57 C56 C69 R93 z Bat 18 oo R94 gt RIS 7 2 11 mo REE E B gt um 7 6 TCX1 C77 R69 ee R99 102 Ke 00d 9 R24R88 Qt na R6 C95 R105 C79 oS Figure 11 9 Adjustments settings and indicators D2 On PLL unlocked RV1 bias adjustment JP2 factory settings do not change JP3 factory settings do not change JP5 factory settings do not change Power Amplifier Two version of the RF power amplifier
10. QOGCARARA UON 6 4 4 Left MONO Right MPX Bal Type XLR female 1 GND 2 Signal 3 Signal User Manual Rev 2 3 18 07 07 PTX LCD 19 58 PTX LCD RYB This page was intentionally left blank 20 58 Rev 2 3 18 07 07 User Manual n R PTX LCD 7 7 1 7 1 1 Operating System The exciter is microprocessor controlled The software structure can be divided into a start up phase and a main cycle Start up Operating system loading When you switch the exciter on a window appears on the display showing some information about the device Fig 7 1 Note that CCIR in the figure refers to the set of values that would be used in case of EEPROM error and software re initialization LEOD E R 22 03 720086 UPFPLIER We 6 i FT L 6003 2 Ha TE a CC AUDIO Yz e F I S Figure 7 1 After about 10 seconds a new window will show up while the buzzer emits an intermittent sound Fig 7 2 PE Attention The setting Parameters are Freduencu S amp 8660 MHZ Power 5 4 Fush encode do acce E g cept Figure 7 2 While this window is displayed pushing the encoder will cause RF power to be set Off in this way it s possible to change the various parameters before starting transmitting After 5 seconds or when the encoder is pushed the software jumps into its main cycle EEPROM Re initialization At start up the PTX LCD software check the cohe
11. push the button to save the new value After having modified the value of a parameter the cursor goes on blinking for approximately 30 seconds waiting for confirmation from the user If the user doesn t confirm the new value i e the button is not pressed the device emits a sound to indicate that no modification has been saved the cursor stops blinking and remains on the selected parameter User Manual Rev 2 3 18 07 07 9 58 PTX LCD RR 5 2 10 58 Preparation Unpack the transmitter and before any other operation check the unit for any shipping damage and check that all the controls and connectors on the front and rear panels are in good conditions Check the mains voltage selector on the rear panel the selected value is indicated by an arrow If required extract the selector block levering with a little screwdriver Fig 5 2 Rotate the block until the correct printed value corresponds with the arrow then reinsert it Figura 5 2 If it has been necessary to change voltage check the fuse value The required values are the following 110 120 Volt 10 0 A 6x30 PTX30 LCD 220 240 Volt 3 16 A 6x30 110 120 Volt 6 30 A 6x30 PTX60 LCD 220 240 Volt 6 30 A 6x30 110 120 Volt 10 0 A 6x30 PTX100 LCD 220 240 Volt 6 30 A 6x30 6x30 It is also possible to check the integrity of the RF amplifier section fuse Its value is 4A for the PTX30 LCD version and 8A for the PTX60 LCD and PTX100 LCD version
12. R6 Sood Goovo oOo Gcecoeo oaoa aooo ooe cee oeoeoeoeao econo eo e Ce e686 Po OO 8 ee OOO CR OOo OO OCG 8 ob OO eee oe OOO eee oo oo 6 8 eo CNAI CNL Figure 11 13 11 8 1 Adjustments settings and indicators D1 D9 On communication activity JP1 1 2 3 4 serial port set as DCE 5 6 7 8 serial port set as DTE JP2 7 8 closed 17 18 open no parameter of the exciter is locally controllable 7 8 open 17 18 closed only the default menu parameters are modifiable the user can t acces to the admin menus 7 8 closed 17 18 closed only the default menu parameters except the frequency are modifiable the user can t acces to the admin menus 7 8 open 17 18 open normal behaviour Other jumpers reserved 11 9 Telemetry board optional This board holds a DB25 female connector that is accessible from the rear side of the exciter If this board is present it is possible for the user to utilise the measurements and the controls of the TELEM menu This board can measure 8 analog input channels for voltages between 0 and 5 V to control two relays and and an open collector digital output This board does not include any means for adjustment z gt yl Pres i a Q ee e Ee e ee CNI JP2 oaooo o Telemetria Telemetry 2222 2 7 906 JPL o SG oo
13. Reading and setting of the working frequency Pushing the encoder while the cursor is on this item will put you through the menu that permits to modify the frequency setting Freduencuw FH HHZ C Exit J Figura 7 9 After choosing a new frequency value the management software will ask you to confirm it Are you shure Yes No After confirmation pushing the encoder on the choice Yes the exciter unlocks from the current frequency the unlock LED is lit and then locks again on the new frequency Rev 2 3 18 07 07 User Manual n v R PTX LCD e Audio Lwl Reading and setting of the audio input level The reported value indicates the audio level that generates 100 modulation Pushing the encoder while the cursor is on this item will put you through the menu that permits to modify the audio input level setting Audio Lel C Exit J Figure 7 10 The level can be changed between 13 and 14 dBm at 1 dB steps On the back of the exciter there are the trimmers to perform fine regulations of the input levels This status bar reports some settings that can be modified in the administration menus and that will be described in the following of this manual Ste Audio setting Stereo Mono MPX_U MPX_B 50u Preemphasys 0 25 50 75 microsec CL Clipper function activated On or deactivated Off Pl Pilot tone included On or excluded Off 001 this machine s address comprised between 001 and 25
14. at 10MHz x x 1 0 0 Default parameters set in case of exciter reset FCC x x 0 Default parameters set in case of exciter reset OIRT x x 1 1 0 Default parameters set in case of exciter reset Japan x x 0 0 1 Default parameters set in case of exciter reset Italy x x 1 0 i Default parameters set in case of exciter reset CSI x x 0 1 L Default parameters set in case of exciter reset China x x 1 1 1 Reserved for future applications In case of ExFrq enabled is necessary to modify the jumper JP6 on power supply as indicated in the following figure in order to enabled the alternatives frequencies that shall be used when the exciter is used as backup in a N 1 system cy vs LALA A A 11 8 CPU board The CPU board is on the front part of the device fixed to the panel board This board is the heart of the transmitter since it manages and elaborates all the information coming from the other boards and possibly from other devices via the serial interface or the telemetry board The main characteristics of the CPU board are e Microprocessor 80C552 e Eprom size 64KBytes e Static RAM size 32KBytes e Communication interfaces RS232 RS485 and I2C Bus e EEPROM size 256KBytes e Self diagnosys Leds 9 red 54 58 Rev 2 3 18 07 07 User Manual n v R PTX LCD D1 D9
15. electric shocks 3 1 1 If the victim is inconscious Follow the first aid principles described below e Lay the victim down on his back on a rigid surface e Free the respiratory tracts by raising the neck and pushing the forehead back Figure 1 e If necessary check the breathing of the victim opening his mouth e If the victim is not breathing start artificial respiration immediately Figure 2 incline the head close the nostrils apply your mouth to the victim s and make four fast respirations Figure 1 Figure 2 e Check the heart beat Figure 3 if there is none start a cardiac massage immediately Figure 4 pressing the sternum approximately at the centre of the chest Figure 5 Figure 3 Figure 4 Figure 5 e If there is just one person providing first aid he must adopt a rhythm of 15 compressions and 2 fast respirations alternately e If there are two persons the rhythm must be 1 respiration and 5 compressions alternately User Manual Rev 2 3 18 07 07 5 58 PTX LCD RYB 3 2 3 2 1 3 2 2 6 58 e Do not interrupt the cardiac massage during the artificial respiration e Call a doctor as soon as possible If the victim is conscious e Cover the victim with a blanket e Keep him calm e Loosen the victim s clothes and keep him lying down e Call a doctor as soon as possible Treating electric burns Large scale burns and serious cuts e Cover the area concerned with a sheet or a clean cloth
16. good idea of the modulation level reached during the working time Each horizontal bar corresponds to the fraction of the time in which the modulation had that percent value The percent value can be read on the meter bar an the left of the graph 100 sampling time of the graphic selectable out of 100 500 or 1000 millisec INST Visualization method instantaneous INST or average on 300 samples In instantaneous mode only the graphic visualization is active In 300 mode at the end of the analysis 300 x sample time the values M S and K will be displayed M Percent value of the mean modulation during the analysis S Part of the modulation surpassing 100 Percentage of modulation peaks on the 300 samples K S times RESET Pushing the encoder on this item will refresh the graphic EXIT Pushing the encoder on this item will return you to the default menu 26 58 Rev 2 3 18 07 07 User Manual n v R PTX LCD e C Preset J Selecting this menu item and pushing the encoder you will access the window that permits to reset the exciter to the factory settings Figure 7 13 As indicated by the window text keeping the encoder pressed for two seconds will reset the exciterand a start up procedure analogous to that performed at switch on will follow The preset values are the same used for EEPROM re initialization see chapter 7 1 2 and chapter 9 except for the working frequency that remain
17. tone is enabled If you disabled the power output it is now possible to activate entering in the main menu selecting the first item and changing it from OFF to ON It is any time possible to disable the power output of the PTX LCD from the main menu Adjusting The PTX LCD features some trimmers accessible from the rear panel that can be adjusted to the user s needs these are two EXT AGC trimmers FWD and RFL and the LEVEL ADJ Fig 6 2 16 The LEVEL ADJ trimmers are used to adjust the modulation level due to the respective input For audio input the levels are set via software with 1 dB steps and the trimmers can be used for fine setting For SCA input the levels are only adjusted with the trimmers The EXT AGC trimmers give to the user the possibility to limit the outout power of the transmitter as a function of the levels of two external analog values that are acquired by the Remote connector Both trimmers work in the same way EXT AGC FWD is connected to pin 10 of the Remote connector while EXT AGC RFL is connected to pin 2 If the voltage connected to one of the pins tends to surpass the limit set with the corresponding trimmer the power emitted by the exciter is reduced until the monitored voltage goes below the fixed limit These trimmers are mostly useful when the PTX LCD is part of a transmission system For example if the exciter is connected to a final amplifier it is practical to connect to pin 10 a volta
18. 07 07 User Manual n v R PTX LCD R39 clipper symmetry adjustment R40 38 kHz subcarrier suppression optimization Mono MPX board LP1 Low pass filter 1 LP2 Low pass filter 2 RV1 Mono level RV2 Board output level modulation RV3 clipper circuit intervention threshold D1 positive power supply voltage presence D2 negative power supply voltage presence D3 clipper intervention signalling 11 5 PLL Driver card amp VCO Card The PLL Driver board Fig 11 9 is placed on the left part of the PTX LCD Fig 10 1 5 and is directly connected to the audio motherboard The digital PLL module is composed by a high stability temperature controlled oscillator and by the digital circuit doing the division and the comparison of the working frequency The oscillator generates a 10 MHz frequency divided by a fixed 1 kHz signal This signal is routed to the digital comparator divider circuit that compares it to the signal generated by the VCO dived depending on the exciter s working frequency The output of the comparator is the AFC signal that is applied to the varicap diodes on the VCO board and added to the audio signal coming from the coder card The Voltage Controlled Oscillator generates the RF signal that is aplified up to around 300mW 25dBm that is the level required to drive the R F Power Amplifier Nota The VCO is cointained in a silvered brass box fixed on the PLL amp Driver board User Manual Rev 2 3 18 07 07 51 58
19. 2 dB attenuation on channel L JP2 as JP3 for channel R JP8 1 2 no gain on channel SCA2 2 3 20 dB gain JP11 1 2 input impedance for channel MPX_U 50 Ohm 2 3 10 kOhm JP10 1 2 no gain on channel SCA3 2 3 30 dB gain JP9 1 2 no gain on channel SCA1 2 3 20 dB gain JP12 3 5 4 6 no attenuation on channel MPX 1 3 2 4 12 dB attenuation on channel MPX RV7 Adjustment of the MPX monitor output 11 4 Coder The coder card is located above the audio motherboard between the audio input section and the PLL Driver board Two versions of this boards are available the Stereo one Fig 11 7 and the Mono MPX one Fig 11 8 The only difference between a Stereo PTX LCD and a Mono MPX one resides in the kind of coder module On this board depending on the version there are the low pass filters the preemphasys circuits the stereo coder and the clipper circuit that can be included or excluded via software User Manual Rev 2 3 18 07 07 49 58 PTX LCD RaW Ra The function of the Clipper circuit that in some countries is manatory is to limit the modulation level even for audio input levels above the nominal value CLIPPER SYMMETRY CLIPPER LEVEL R57 R32 nonnn non PILOT FREQUENCY R39 C13 2 R33 Rs SEPARATION ADJ
20. 50 60 Hz Power consumption PTX30LCD 120 VA ca PTX60LCD 200 VA ca PTX100LCD 300 VAca Input Left Mono and Right MPX Type XLR female balanced or unbalanced MPX Type BNC unbalanced Input impedance 10 KOhm or 600 Ohm software selectable Input level 13 dBm 14 dBm software adjustable in 1 dB steps fine adjusting with trimmers Preemphasys selectable 0 25 us 50 us CCIR 75 us FCC SCA RDS input 3 BNC connectors unbalanced SCA input impedance 10 KOhm User Manual Rev 2 3 18 07 07 37 56 PTX LCD SCA input level SCA amplitude frequency response Crosstalk from subcarrier 67KHz on main or stereo channel Crosstalk from subcarrier 92KHz on main or stereo channels Output MPX monitor Pilota tone 19 KHz RF Test MONO operation FM S N Amplitude frequency response Total Harmonic Distortion THD Intermodulation distortion MPX operation Composite FM S N MPX frequency amplitude response MPX THD Intermodulation distortion Stereo separation Stereo Operation Stereo FM S N Audio amplitude frequency response Total Harmonic distortion Intermodulation distortion Stereo separation Remote connections Remote connector Interlock 12C interface 38 58 Rev 2 3 18 07 07 ELETTRONICA 20 dBm 10 dBm trimmer adjustable 0 2 dB from 40 KHz to 100 KHz 65 dB 70 dB 0 dBm for FM 75KHz minimum load 600 Ohm 1 Vpp minimum load 4 7 KOhm 30 dB wrt RF 50 Ohm impedance gt 82dB 90 dB typical
21. 6 that is meaningful when the exciter is included in a telemetrized transmission system C AmeEerTm J Selecting this menu item you will be presented with the menu of time anlaysis of modulation level ct A t a t s 5 5 A Gi Gist Figure 7 11 100 sampling time of the graphic selectable out of 100 500 or 1000 millisec the indicator in the higher part of the display notes the cycle starting point Each bar corresponds to the modulation level in an interval long as the sampling time User Manual Rev 2 3 18 07 07 25 58 PTX LCD RYB INST Visualization method instantaneous INST or average on 300 samples In instantaneous mode only the graphic visualization is active In 300 mode at the end of the analysis 300 x sample time the values M S and K will be displayed M Percent value of the mean modulation during the analysis S Part of the modulation surpassing 100 Percentage of modulation peaks on the 300 samples K S times RESET Pushing the encoder on this item will refresh the graphic EXIT Pushing the encoder on this item will return you to the default menu e C ModFPKkK J Selecting this item of the default menu and pushing the encoder will present you the peak modulation analysis menu mn oS Wi in 7 5 2 x Figure 7 12 This graphic gives a visualization of the distibution af peak modulation levels With this graphic you can get a
22. 9 V1 Voltage on pin 6 of the Telemetry connector 5 V max V2 Voltage on pin 13 of the Telemetry connector 5 V max V3 Voltage on pin 5 of the Telemetry connector 5 V max V4 Voltage on pin 12 of the Telemetry connector 5 V max V5 Voltage on pin 4 of the Telemetry connector 5 V max V6 Voltage on pin 11 of the Telemetry connector 5 V max Rev 2 3 18 07 07 User Manual n v R PTX LCD 7 2 26 ExFrq This menu is used to set the alternative frequencies that shall be used when the exciter is used as backup in a N 1 system This menu can be available or not depending on the jumpers configuration see NATET Figure 7 20 O default frequency l 6 transmitters 1 6 working frequencies 7 9 reserved 7 2 2 7 Telem This menu that is alway activated shows the status of the optional telemetry board e at oot 5 2 T 4 ae os Bs i Figure 7 21 If the optional board is not present the displayed values are not applicable If the board is there the DB 25 connector on the rear panel is also present the meaning of the different fields is the following T1 voltage on pin 9 of the telemetry card connector T2 voltage on pin 22 of the telemetry card connector T3 voltage on pin 10 of the telemetry card connector T4 voltage on pin 23 of the telemetry card connector T5 voltage on pin 11 of the telemetry card connector T6 voltage on pin 24 of the telemetry card connector T7 voltage on pin 12 of the telemetr
23. CD 1 Preliminary Instructions This manual is designed to provide a general guide to skilled and qualified personnel who are aware of the dangers that may arise when handling electric and electronic circuits It does not aim to provide a complete description of all the safety precautions that must be observed by people who use this or similar equipment The installation operation maintenance and use of this piece of equipment involve risks both for people and the equipment itself which must be handled only by experienced technicians R V R Elettronica SpA does not assume responsibility for injuries to persons or damage to items caused by improper use or incorrect usage procedures whether the users are experienced or not Users should observe local regulations and fire prevention rules while installing and using this equipment C WARNING always disconnect the power before opening covers or removing any part of the equipment Take appropriate earthing measures to discharge the condensers and high voltage points before doing any maintenance work C WARNING this equipment may radiate radio frequency energy and if it is not installed according to the instructions may cause troublesome interference to radio communications Operating this equipment in a residential environment may give rise to radio disturbance if so the user may be asked to take appropriate counter measures R V R Elettronica SpA reserves the right to make mo
24. CD RYB 34 58 Both the attenuation and the increase that IAMLC is allowed to introduce have limits that can be set by the user The elements of this menu are the following TAMLC Enable or disable the function Mod Minimum and maximum thresholds for the intervention of IAMLC Ist Intervention time related to the minimum and maximum thresholds Att Maximum attenuation and increase IAMLC is allowed to introduce The following table suggests the settings of this function for different kinds of radio programs The best results with this function will be obtained investing some time in experimentation with your own radio programs e use the man MODPK to check your average modulation level Adjust the input level from the main menu so that the average modulation level is the nearest to 100 e Set the IAMLC parameters as suggested by the table and adjust them so that the function is not activated too often Consider the fact that the intervention of the function stops when the average modulation level goes between the minimum and maximum thresholds e The use of the clipper circuit BdSet menu helps in the limitation of the modulation peaks above 100 though introducing a certain aomunt of distorion Think about your possible need for this function depending on your radio program it aiuta a limitare i picchi superiori al 100 di modulazione introducendo pero una certa quantita di distorsione Valutare la necessita di questo
25. E dWV1 037 LHOIWNOVE Av1dsia L M zno o EN9 auvo AlddNS YIMOd edt id zaf 6dr bid Olde auva ndo Nid 06 diHLS 91 LYT ZLY var IND quvo TANVd LNOUd sie NOOSYW Nid 9 ve lv 43q09N3 tar 9 Lvid i 6 L 14 gar E 2 2 2 SH Nid 92 dIHLS olan yap THVOS HAHLON ear tar zaii ONON Nid 9 dit 1S HO zaf zaf auvo taf 43009 03431S Nid t dIHLS EO A sno Tar sno auvo quvo oN 40 EN9 indni olany HOLOaNNOO Co 4NO E LNdNI Olany zno EZ sno o Figure 11 1 In the following you will find a short description of the functionalities of each module 45 58 Rev 2 3 18 07 07 User Manual PTX LCD RYB 11 1 46 58 Power supply The power supply is composed of two sections The first one is dedicated to the finale amplifier It is a switch mode power supply fastened to a heat sink Fig 10 1 9 In the 30 W version there is a second switching power supply of the same kind under the first one 4 1oR eW O 2 a Zz co RE YY c24 AN H o A MBR1 060 2 1uF a S R15 c3C luF LU i R01 co N ae Qeu Qf Rito cof AO SIS R1 Far Ps BLOS C25 Oz j
26. Hz pilot 5 SCA3 RDS 6 SCA2 7 SCA1 8 MPX Unbal 9 Level IMP ADJ Digital section 10 Dig Analog switch 11 SPDIF 12 TOSLINK 13 Digital Imp Select 14 Level OUT ADJ 15 AES EBU User Manual XLR connector for Left mono input XLR connector for Right MPX input BNC connector to monitor the composite modulating signal BNC connector for pilot tone output suitable to synchronize external devices e g RDS coder SCA3 RDS BNC connector with level adjusting trimmer SCA2 BNC connector with level adjusting trimmer SCA1 BNC connector with level adjusting trimmer Unbalanced MPX BNC connector with level adjusting trimmer Trimmers for adjustment of Left and Right input 3 5 JACK connector for external Digital Analog switch command PIN RCA unbalanced connector for S PDIF format audio input connector for fiber optic digital audio input Switch to select the balanced or unbalanced digital audio input Trimmers for adjustment of Left and Right level of converted digital audio signal XLR balanced connector for AES EBU format digital audio input Rev 2 3 18 07 07 17 58 PTX LCD RYB 6 4 Connectors description 6 4 1 Remote Type DB15 female 1 Ext Rem Interlock input if ground the transmitter is disabled o 2 Ext Rfl Pwr analog input for reflected power of an external amplifier 3 GND o 4 Analog Input 5 5 Analog Input 3 6 Analog Input 1 7 RLY 2 Out Digital output NO rela
27. PTX LCD 8 bit Version ARO 4 remoteEQ 8 OswR vin S O SWR PWR SET xo Lom R F MUTE User Manual Volume 1 RaW Ra ELETTRONICA Manufactured by CEO Name File capitoli_en p65 Version 2 3 Date 18 07 2007 Revision History Date Version Reaso E ditor 20 03 01 2 0 New Version D Canazza 23 11 01 2 1 AUDINP DIG Upgrade J Berti 11 07 01 2 2 TRDSP Upgrade J Berti Description upgrade of the jumperon panelcard 18 07 07 2 3 TRDSP removalfrom 8bit version Software menu J Berti upgrade PTX LCD User Manual Version 2 3 Copyright 1998 2007 R V R Elettronica SpA Via del Fonditore 2 2c 40138 Bologna Italia Telephone 39 051 6010506 Fax 39 051 6011104 Email info rver 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 re
28. SCA RDS subcarriers 1900000000000000000 100000000 200000000000000000 e 1 P p EIEE Ra H ra Cee cn Xn 1 2 ls a2 oo00000000000000 Q000000000000000 User Manual Figure 11 4 Rev 2 3 18 07 07 47 58 PTX LCD RaW Ra 11 2 1 Adjustments settings and indicators D2 lit no audio D4 lit supply voltage OK D5 lit supply voltage OK D6 lit supply voltage OK JP8 factory setting please don t change 11 3 Audio input The audio input section is on the rear part of the exciter and is directly connected to the audio motherboard using a strip line connector It is composed of two boards coupled in a L shape and fastened to the part of the rear panel that hosts the audio connectors The first board Fig 11 5 contains the trimmers to adjust the levels and the filters for each input channel The second board Fig 11 6 contains the level regulations and the switches for the software based audio configuration l To T i to gg Msp MX omy OS l R7 R R0 AA Ril 1 4
29. a f SEES DASEN NABH E ARARA Shea 5a g4 gt 23 4 JP2 B JP3 T L ATT 1208 Bil e t ue BES C Fe FM CSPTAUDBNCO3 Figure 11 16 User Manual Rev 2 3 18 07 07 57 58 PTX LCD RYB Figure 11 17 58 58 Rev 2 3 18 07 07 User Manual
30. are available 30 and 60 100W This section is placed in the central part of the device Fig 10 13 is fixed to a heatsink and contained in a metal box completely shielding it The RF signal coming from the PLL Driver card is first amplified by the pilot stage MRF237 working in class C up to 1 5 W and then passed to the final stage MRF315 that amplifies it to 30W In case of 60 100W the RF signal coming from the PLL Driver card is first amplified by the pilot stage 2xBFR540 and BLF244 then passed through the final stage SD1480 to obtain an amplified power of 60 or 100W The amplified signal is filtered by a low pass filter to reduce the harmonic emissions below the permitted levels A directional coupler inside the final amplifier gives the readings of forward and reflected power that are then sent to the power supply section to be controlled Rev 2 3 18 07 07 User Manual n v R PTX LCD A 30 dB test probe is available on a BNC connector on the rear panel of the exciter just under the RF output connector foe 2a ci ncz2 P 6201023 cst y T Figure 11 11 60 100W 11 7 Panel Board This card is located in the front end of the device and provides an interface between the CPU card and the remaining PTX LCD cards This card handles all signals from to LCD Encoder LED Indicators Power Supply Card Audio Mainboard and
31. ct the retailer or dealer where you bought the equipment describe the problem or fault to check if there is a simple solution Retailers and Distributors can provide full information on the problems that occur most frequently they can normally repair the equipment much faster than the manufacturer 2 If your dealer cannot help you contact R V R Elettronica and describe the problem to them if necessary you will be sent authorization with the necessary instructions 3 When you have received authorisation return the equipment carriage paid to the address specified Pack it carefully if possible in the original packing and seal the package LE Do not return the machine without prior authorization otherwise it may be returned to you 4 Quote the machine s type model and serial number attach a written technical diagnosis listing all the problems and faults encountered and enclose a copy of the invoice User Manual Rev 2 3 18 07 07 3 58 PTX LCD RW Ra Replacement of parts under guarantee or spare parts can be ordered from the following address R V R Elettronica SpA Via del Fonditore 2 2c 40138 BOLOGNA ITALY Tel 39 051 6010506 quoting type model and serial number of the device 4 58 Rev 2 3 18 07 07 User Manual n R PTX LCD 3 First Aid Personnel involved in the installation use and maintenance of the equipment must be familiar with the theory and practice of first aid 3 1 Treating
32. ctor S PDIF 1 TOSLINK fiber optic 1 XLR balanced female connector AES EBU 3 5mm JACK shorted to ground forces the selecion of analog input Rev 2 3 18 07 07 39 58 PTX LCD RYB This page was intentionally left blank 40 58 Rev 2 3 18 07 07 User Manual n v R PTX LCD 9 Factory settings Each time a working parameter of PTX LCD is changed by the user the new value is stored in the working configuration and saved in anon volatile memory In this way at switch on the exciter is configured exactly as it was when it was last switched off When shipped the exciter can be configure at customer s requests for example if it is part of a transmission system with working frequency and modes specified in the order or itcan have a default configuration The default configuration of the PTX LCD is determined by the setting of a group of internal jumpers At start up the name of the default configuration is shown on the display of the device see 7 1 The possible configurations are the following CCIR Parameter Menu Value Power output Default On Minimum frequency 87 5 MHz Maximum frequency 108 0 MHz Frequency steps 10 kHz Preset frequencies Admin ExFrq 87 5 90 0 92 0 94 0 96 0 98 0 100 0 102 0 104 0 106 0 MHz Power Default 0 Input level Mono L Admin gt AuSet gt Mono L X dBm 0 dBm Input level MPX R Admin gt AuSet gt MPX R X dBm 0 dBm Input status Mono L Admin gt AuSet gt Mono L On Input s
33. difications to the design and technical specifications of the equipment and to update this manual without notice User Manual Rev 2 3 18 07 07 1 58 PTX LCD RYB This page was intentionally left blank 2 58 Rev 2 3 18 07 07 User Manual n v R PTX LCD 2 Warranty The guarantee which is for 24 twentyfour months is valid for any R V R Elettronica product On components such as tubes for final amplifiers the manufacturer s guarantee applies R V R Elettronica extends all transferable original guarantees to its own products To ensure that servicing is carried out properly and as fast as possible the work shall be handled by R V R Elettronica any claims should be sent directly to R V R Elettronica in accordance with the defined procedures The warranty does not include damage while the equipment is being shipped to R V R for repairs any unauthorized modification or repair accidental damage or damage not due to defects in the equipment nominal damage not accidental oa KR W N shipping the equipment and insuring it and replacement of parts or units Any damage to the equipment caused during shipment must be reported to the transporters and notified in writing on the forwarding receipt Any difference or damage discovered after delivery must be reported to R V R Elettronica within 5 five days from the delivery date To take advantage of the guarantee adopt the following procedure 1 Conta
34. e MONO input channel left for the stereo version It can be set with 1 dB steps between 13 and 14 dBm If this parameter is set to X dBm the exciter generates 75 KHz modulation for X dBm input MPX R_ audio level setting for the MONO input channel left for the stereo version It can be set with 1 dB steps between 13 and 14 dBm The meaning is the same of MONO L MONO L software switch to activate deactivate the MONO channel left for the stereo version MPX R software switch to activate deactivate the MPX channel right for the stereo version When the exciter is in STEREO mode BdSet menu the levels on both channels are forced to the same value IAMLC Intelligent Automatic Modulation Level Control aa ie gi gt D FZ an o DWZ ee Qe H iH rn A 4 LLET ITI TT DHt iio Doma a Fa m 1 DOZ hi DD X Figure 7 25 The IAMLC functionality provided by PTX LCD adjusts the modulation level by adaptation of the input level without the use of limitation or compression When the average modulation level surpasses the maximum threshold for a time interval exceeding the maximum hysteresis time that has been set the input level is attenuated by 1 dB In the same way when the average modulation level goes below the minimum threshold for a time interval exceeding the minimum hysteresis time that has been set the input level is increased by 1 dB User Manual Rev 2 3 18 07 07 33 58 PTX L
35. e audio motherboard using a strip line connector It is composed of three different boards The first board Fig 11 15 contains the balanced analog input and the trimmers to adjust the level for each analog input and the relative filters this board is the same used in the PTX LCD without AUDINP DIG The second board Fig 11 16 contains the level regulations and the switches for the software based audio configuration The third section Fig 11 17 attends to conversion of the digital signal into analog left and right signals with the respective trimmers for the adjustment levels This section provides also the selection of digital or analog input the digital input are select automatically when they are present or through the jack connector Dig Analog switch connected to ground selects the analog input A manual switch is present to select the unbalanced TOSLINK and S PDIF or balanced AES EBU digital input Rev 2 3 18 07 07 User Manual n v R PTX LCD Figure 11 15 After the necessary processing filtering level regulation digital analog conversion selection the audio input section passes the signal to the audio motherboard that routes them to the coder card g U6 Bel wv 88 Be B
36. e that the interlock connector soldered to the power supply is fixed to the rear panel with a nut that has to be removed to release the power supply Finally the panel board and the CPU board are simply fixed tu hex supports on the front panels with nuts To remove these boards we suggest to release the front panel of the exciter from the chassis Rev 2 3 18 07 07 User Manual PTX LCD Wa R a ih ELETTRONICA iples ing princip 11 Work Figure 11 1 gives an overview of modules and connections composing the PTX LCD 0g 1 s eojuonnaja HAH z AlddNS YIMOd NIH LIMS kdr L AlddNS YIMOd zdf ONIHOLIMS taf Oaa EN9 auvo Y314d WY YAMOd d H Vd NO9 o N9 INO 3199 8994 NI auvo Wd Har bidl Sidi vidl ZldL ldl quvo ODA SdI Pdi dI edi dI 92 diHLS JOVLIOA SNIVW Nv a l m 7 Q 3 HOLIMS SNIYN Ta 3 o Nia 3 NOE _ NOE Pe ef S a 13 ana AY13Wa73L 3 l ca Sdf w Adve Gfefelsfetetets aLOWaY WNY3LXS WHSOND Ee NO dWW7 LHOITWOV
37. encies Admin ExFrq 87 6 90 0 92 0 94 0 96 0 98 0 100 0 102 0 104 0 106 0 MHz Clipper Admin gt BdSet gt Preenph On Modo di funzionamento Admin gt BdSet gt Mode Stereo If stereo coder present Mono If stereo coder not present C S I Configuration as CCIR with Parameter Menu Value Minimum frequency 100 0 MHz Maximum frequency 108 0 MHz Preset frequencies Admin ExFrq 100 0 100 5 100 1 101 5 102 0 103 0 104 0 105 0 106 0 108 0 MHz China Configuration as CCIR with Parameter Menu Value Minimum frequency 87 0 MHz Maximum frequency 108 0 MHz Preset frequencies Admin ExFrq 87 0 90 0 92 0 94 0 96 0 98 0 100 0 102 0 104 0 106 0 MHz 42 58 Rev 2 3 18 07 07 User Manual RVR PTX LCD 10 Identification and access to the modules 10 1 Modules identification Figure 10 1 shows the upper view of the internal of the exciter The components are described below Figure 10 1 1 Audio input board 2 Stereo coder or mono board 3 RF power amplifier 4 Audio mother board 5 PLL amp VCO board 6 CPU board 7 Power supply 8 Transformer 9 Switching power supply 10 Heatsink 11 Panel board display oa User Manual Rev 2 3 18 07 07 43 58 PTX LCD R Y Ra 10 2 LS 44 58 Access to the modules ATTENTION opening the device points with dangerous voltages and currents are exposed Always disconnect the mains supply before removing the co
38. ev 2 3 18 07 07 User Manual Q O D Z a 2 DO z 0 oO n 5 DS D C Admin J Predefinito SIONS Ott ttt OONONEN Ott Power Supply Power External External Power W gt gt gt S gt SOOOIO External Status External Frequency E5XXX TOW rit LNS m2 Se 6 2200 55305 DooDoo wees 7OGOSGOO qb te os os oa os oo vooon Telemetry General Settings Audio Set Audio Settings Intelligent Automatic Modulation Level Modulation Settings Stereo Settings 6 Figure 7 chart of the menu system 6 depicts the overall flow Figure 7 23 58 Rev 2 3 18 07 07 User Manual PTX LCD RW Ra 1 2 1 24 58 Default menu Figure 7 7 To work on a menu item turn the encoder to select it and then push the encoder Depending on the item it could be possible that a new window is opened or that it will be possible to directly modify the parameter PTHSELCO Activation On deactivation Of of RF output power Fwd Power Otput power reading and setting The power reading is expressed in Watt while the setting is expressed as percentage of the maximum output power Pushing the encoder when the cursor is on this item will put you through the menu that permits to modify the power setting Fwd Power Set Power Efl Power 3 4 48 I C Exit J Figure 7 8 kfl Power Reflected power reading in watt Frequency
39. external telemetry card in other words all input output signals of the CPU card P It INVERTER Figure 11 12 User Manual Rev 2 3 18 07 07 53 58 PTX LCD 11 7 1 Adjustments settings and indicators JP8 Position of panel card jumpers ELETTRONICA 16 3 1 ojo 000000 DP ojojo o ojo R26 o0o00000000 ojoo 0 ojoje R24 RR2 o rez R25 000000000900000 000o The software denotes jumper positions as follows 1 signifies a closed jumper O open jumper X any position Jump Jump Jump Jump Jump Meaning 4 5 6 7 8 0 0 X X X ExPwr ExSts and ExFrq menu disabled 1 0 X X X ExPwr and ExSts menu enabled ExFrq menu disabled 0 1 X X X ExPwr and ExSts menu disabled ExFrq enabled 1 1 X X X ExPwr ExSts and ExFrq disabled x x 0 0 0 Default parameters set in case of exciter reset CCIR for PLL
40. fuse interlock BNC connector if the central connector is grounded the exciter is forced in stand by mode fan for forced ventilation RF test output 30 dB below emitted level trimmers for adjustment of Left and Right input unbalanced MPX BNC connector with level adjusting trimmer SCA1 BNC connector with level adjusting trimmer SCA2 BNC connector with level adjusting trimmer SCA3 RDS BNC connector with level adjusting trimmer mains fuse with voltage changer DB25 connector of optional telemetry board DB9 connector for serial communication direct or via modem DB15 connector for interfacing with other devices trimmers to adjust the automatic gain control depending on external analog signals N connector for RF output XLR connector for Left mono input XLR connector for Right MPX input BNC connector to monitor the composite modulating signal BNC connector for pilot tone output suitable to synchronize external devices e g RDS coder Rev 2 3 18 07 07 User Manual RW ELETTRONICA PTX LCD 6 3 Rear panel AUDINP DIG option 12 13 14 Oo Le OUT AD LEFT our ADJ DIGITAL INP SELECT o H TOSLINK DIG ANALOG SWHPH LEFR INP ADJ RIGH INP ADJ AES EBU LEFT MONO RIGHT MPX BAL SPDIF Mh om o3 Oe Analog section 1 Left Mono 2 Right MPX BAL B Monitor 4 19 k
41. g Ej N o od Zg ap R14 E 2 mgs Sje 12 Cr o 1 A Gur c10 ag rahole BIE 33 0 PY 4 4 E nie poy R20 478 DZ4 R9 C14 TG R27 R24 56K R23 Z E pi es 2 9 5 2 red ra Bao 5 p 4 3 3h isa b isi S z N au 327 amp Esg e SeS a x T luF Wiles 5 Ses amp ot SD M fas Boy sE B Lila z aes ae 2 B Lr wl Pl KEELEE T 3 IN o e AEN z SIZAS G gSTR22 LEL Q2 l mM Pe eG RIJS 24 CHC c28 5 C32 gt 5y P2 g a i 5 470R 5W g s3 OOOO t oo 1 8 so cie q Figure 11 2 The second section Fig 11 3 is the board fixed to a heatsink in the central part of the exciter Fig 10 1 7 This board contains the power supply for the different boards of the exciter audio CPU the section that manages the analog input from the Remote connector and the Automatic Gain Control for the output power level management cH TITTTTTTIT TT boii aii Pitti titi tit Tit T ECEE LELI iii
42. ge that is proportional to the RF power emitted by the amplifier and to pin 2 a voltage proportional to the reflected power In this way it Rev 2 3 18 07 07 User Manual n v R PTX LCD is possible to have constant overall output power even if the amplifier s gain is not constant over the FM range and to limit the reflected power of the amplifierso that the its protection system doesn t intervene To adjust the EXT AGC trimmers of the PTX LCD procced as described in the following Perform the connections described in figure 5 3 The connection cable can be supplied on request by R V R Elettronica or be realized by a technician you trust depending on the pinout of the amplifier you use PTX LCD Remote NS ae BJA O RF out ie TT cam F e zE O fel oer ert H Oo Oo BYR Tew re G we Lare e ro ae we esr eh i Q Telemetry RF In _ RF Out g e LALJ G E s 7 v 7 gt Lead o RF Amplifier Figure 5 3 Switch on the exciter at minimum power Turn both trimmers completely clockwise Rise the power em
43. itted by the exciter until on the instrument of the amplifier you read an emitter power level just above the desired threshold Turn the EXT AGC FWD trimmer counter clockwise until you see the power emitted by the amplifier starting to decrease Decrease the power emitted by the exciter to the minimum Disconnect the dummy load from the amplifier and substitute it with an unadapted load so that part of the emitted power is reflected and set the amplifier s instrument to measure the reflected power Rise the power emitted by the exciter until on the instrument of the amplifier you User Manual Rev 2 3 18 07 07 13 58 PTX LCD RYB 14 58 read a reflected power level just above the desired threshold Turn the EXT AGC RFL trimmer counter clockwise until you see the power reflected on the amplifier starting to decrease At this point the adjustment of the trimmers is completed Now you can set on the exciter the output value you desire without the forward or reflected power of the amplifier surpass the set thresholds Rev 2 3 18 07 07 User Manual RW ELETTRONICA PTX LCD 6 External Description This chapter describes the elements of the front and rear panels of the PTX LCD 6 1 Front Panel Mod PTX LCD oO ON AIRE 4 A PWR SET OKO QO EXT R F MUTE 1 ON 2 ONAIR 3 REMOTE
44. limitatore in funzione del proprio programma musicale Figure 7 26 shows an example of modulation level evolution when the IAMLC function is activated Rev 2 3 18 07 07 User Manual n v R PTX LCD Ist Max Ist Max T 1 dB amp Lap Mod Max c Q T ne O E 6 D S Ist min o lt Pa Mod min Time Figure 7 26 7 2 2 12 BdSet Modulation type configuration Board Set STEREO 54 us Eh ri r 16 K Ohm z 1 1 mn n e E 1 i a 5 2 x Figure 7 27 Mode transmission mode selector MONO MPX_U MPX unbalanced BNC input MBX_B MPX balanced XLR input STEREO The latter option is active only for stereo machines Preemph Preemphasys setting 0 25 50 o 75 ms Preemphasys works on the Right and Left channels in stereo mode and on mono input MPX input are not touched by this setting Clipper Activation deactivation of the modulation limiter It limits the modulation to 81 5 kHz for input signals 6 dB above the reference input level Imped Balanced audio input impedance selectable between 600 or 10k Ohm Scale Graphic scale of the VU meter It can be set to 1 1 normal visualization or 1 10 multiplied by 10 useful when low modulation levels have to be measured User Manual Rev 2 3 18 07 07 35 58 PTX LCD RYB 7 2 2 13 StSet Stereo coder board configuratio menu available if the stereo option is installed m iW 7 5 2
45. mode 7 2 2 1 Main E Pwr RE Pwr Freq VCO 28 58 e E ow gt Figure 7 15 Activation On deactivation of RF power output Reading and setting of the output power The power reading Is expressed in Watts the setting value in of the maximum power If one pushes the encoder when the cursor is on this item the measuring unit changes from W to and turning the encoder he will be able to set the desired value Pushing the encoder again will store the new setting Reflected power reading in Watts Working frequency Pushing the encoder when the cursor is on this item will give the possibility to change the working frequency turning the encoder Please note that when the encoder will be pushed to store the new frequency the software will ask for its confirmation Are you sure If you select yes and push the encoder the new frequency will be set wile pushing the encoder on No it will be aborted Control voltage applied to VCO in Volt Rev 2 3 18 07 07 User Manual h v R PTX LCD 1 2 2 2 Ampli This menu is for information only no value can be modied since they show current voltage and temperature af the amplifier section a5 50 ag X Figure 7 16 IN V Input voltage to the power supply PAV Voltage of the final stage of the amplifier PA I Current of the final stage of the amplifier TEMP temperature of the amplifier
46. o0oo0o0 000 000 ooo0o 0000 0 Oe ea ye N o a cs Q 3 o 7 re I lt Figure 11 14 User Manual Rev 2 3 18 07 07 55 58 PTX LCD RYB 11 10 11 10 1 56 58 AUDINP DIG board optional The option AUDINP DIG allows the PTX LCD exciters to be inserted in the systemsthat use digital audio distribuition This option is designed to replace without any special adjustment the standard audio input section allowing the upgrade doesn t require firmware modification of the exciter Releasexx04xxxx If digital input is present it is automatically selected by the embedded logics Through an external command it is possible to force the selection of the analog input instead of the digital one a jack to be connected to ground A manual switch allows to select balanced or unbalanced digital input Through two trimmers it is possible to adjust the level of the converted digital input to normalize the R and L signals with respect to the level set for analog input The D A conversion is performed by a 24 bit converter with a sampling frequency automatically selectable from 32 to 96 KHz This option supports S PDIF AES EBU IEC958 and EIAJ CP340 1201 data formats Functional description The option section is placed on the rear part of the PTX LCD and is directly connected to th
47. points that are necessary for the installation of the device If any item is not completely clear for example when you use the exciter for the first time we strongly suggest to read throughly the manual and the description of the operating system 5 1 Using the encoder The interaction between the user and the exciter s control software is performed using the encoder fig 5 1 Turn the encoder counterclockwise Turn the encoder clockwise to to move the cursor downwards to move the cursor upwards to decrease the value of a parameter increase the value of a parameter or to choose an element from a list or to choose an element from a list of possibilities of possibilities Push the button once to enter in the desired menu to enter in modification mode or to confirm a choice Figure 5 1 The operations supported by the encoder are e rotation moves the cursor shown on the display if you turn the encoder to the left counterclockwise the cursor moves downwards if you turn it right the cursor moves upwards it also permits to increase or diminish the parameters turning the encoder left diminishes the parameter turning it right increases it or to select an item form a list of options e pushing push the button once when the cursor is on the name of a menu to enter in that menu push it when the corsor is on the name of a parameter to enter in modification mod the cursor starts blinking after the modification of a parameter
48. quirements 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 that this FM transmitter is in compliance with the essential requirements and other relevant provisions of Directive 1999 5 EC CE 10 2 10 ELETTRONICA 1 11 11 11 11 11 11 11 11 11 11 _ _ COMNADRWN Table of Contents Preliminary Instructions Warranty First Aid Treatment of electrical shocks Treatment of electrical Burns General Description Quick Guide Using the encoder Preparation Operation Calibration External Description Front Panel Rear Panel Rear Panel AUDINP DIG option Connectors description Operating System Start up Operating System Technical Specifications Mechanical Specifications Electric Specifications Factory Settings Identification and access to the modules Modules identification Access to the modules Working principles Power supply Audio motherboard Audio Input Coder PLL Driver card amp VCO Card Power amplifier Panel Board CPU card Telemetry board optional AUDINP DIG board option Appendix Component layouts schematics bills of material User Manual Rev 2 3 18 07 07 PTX LCD PTX LCD Rev 2 3 18 07 07 RVR ELETTRONICA This page was intentionally left blank User Manual n v R PTX L
49. rency of the data stored in the non volatile memory EEPROM with respect to the software version A discrepancy will be detected in case software upgrade User Manual Rev 2 3 18 07 07 21 58 PTX LCD RaW Ra 7 2 22 58 In such case the software resets the EEPROM to safe values that are configurated in the firmaware EPROM This behaviour can also be forced by the user it is sufficient to keep the encoder pushed while switching on the exciter until the preliminary checks are performed In such case In these situations the following message will be displayed inviting the user to keep the button pressed to reset the EEPROM or to release it to keep the EEPROM as it is ATTENTION encoder bu C W it a i og u don tf accept Figure 7 3 If the button is released before the count down expires the start up sequence goes on in the standard way If the button is pushed till the end of the wait time the EEPROM is stored with a set of default values Figure 7 4 After pushing the button the message shown in Fig 7 5 is displayed for some seconds after which the software goes on running in the standard way Figure 7 5 ATTENTION We strongly suggest not to force the EEPROM re initialization except in case of real necessity since this involve the loss of the user configuration Main cycle The menu system of the PTX LCD can be broken up in a default menu and a set of administration menus R
50. s Verify that the mains switch on the front panel of the unit is on the OFF position Connect to the RF output of the exciter a proper load a dummy load with suitable dissipation power an antenna a final amplifier or a combiner NOTE When you connect the PTX LCD to other devices it is necessary to strictly follow the instructions given by the resepective manufacturers to avoid damages or danger situations Rev 2 3 18 07 07 User Manual n v R PTX LCD LS 5 3 Connect the mains cable to the plug on the rear of the exciter NOTE This device shall be correctly connected to ground Correct grounding is essential both for safety and to reach the rated performances Connect your source audio for example the mixer or STL output to the suitable input connector Depending on the version the PTX LCD offers a number of input choices L R MPX or even digital see the connectors description for details Operation Switch on the exciter with the mains switch on the front panel All the STATUS and ALARMS leds are lit on to permit the verification of their good working status The display than shows some information regarding the exciter ae 22 03 720086 PFLIER Y2 6 i PTSL 885 2 H T 5 AUDIO Yz 5 F I S L E F O After some seconds the user is invited by the sound of a buzzer and by a message on the display to push the encoder if the current settings are not acceptable PE Attention
51. s set as the current one If you want to skip the menu just breafly push the encoder e C Admin J Selecting this menu item and pushing the encoder will visualize the window that permits to access all the administration menus 7 2 2 Administration menu This menu is divided in 13 submenus 12 for the MONO MPX version of the PTX LCD The window dispalyed to the user as soon as he entered in this menu warns to proceed only after reading the technical manual mn Wn in 7 5 2 x Figure 7 14 The windows of the administration menu are subdivided in three parts e on the left the bar indicator shows the instantaneous modulation level e the cetral part displays the submenu content that can be just informative or modifiable depending on the menu e the right part is a navigation bar perrmitting the user to go from a submenu to the other Turning the encoder the cursor moves over the indicators of the different submenus while in the central part of the window their contents is displayed in turn User Manual Rev 2 3 18 07 07 27 58 PTX LCD ELETTRONICA If you push the encoder while the cursor is on the name of a submenu and if this one contains modifiable parameters the cursors enters in the central part of the window permitting to edit thos modifiable parameters Each of the menus of this kind contains an EXIT item pushing the encoder while the cursor is on EXIT will put you back in navigation
52. tatus MPX R Admin gt AuSet gt MPX R On Preemphasys Admin gt BdSet gt Preenph 50 us Clipper Admin gt BdSet gt Clipper Off Audio Mode Admin gt BdSet gt Mode Stereo lf stereocoder present MPX If stereocoder not present Pilot Tone Admin gt StSet gt Pilot On If stereocoder present Phase shif between channels Admin gt StSet gt Chan 0 If stereocoder present FCC Configuration as CCIR with Parameter Menu Value Preemphasys Admin gt BdSet gt Preenph 75 us Audio Mode Admin gt BdSet gt Mode Stereo If stereo coder present Mono If stereo coder not present User Manual Rev 2 3 18 07 07 41 58 PTX LCD RYB OIRT Configuration as CCIR with Parameter Menu Value Minimum frequency 66 0 MHz Maximum frequency 74 0 MHz Preset frequencies Admin ExFrq 66 0 67 00 68 00 68 00 69 00 70 00 71 00 72 00 73 00 74 00 MHz Audio mode Admin gt BdSet gt Mode Stereo If stereo coder present Mono If stereo coder present JAPAN Configuration as CCIR with Parameter Menu Value Minimum frequency 76 0 MHz Maximum frequency 90 0 MHz Preset frequencies Admin ExFrq 76 0 78 0 80 0 82 0 83 0 84 0 85 0 86 0 88 0 90 0 MHz Modo di funzionamento Admin gt BdSet gt Mode Stereo If stereo coder present Mono If stereo coder not present ITALIA Configuration as CCIR with Parameter Menu Value Minimum frequency 87 6 MHz Maximum frequency 107 9 MHz Frequency step 100 kHz Preset frequ
53. utput power 30 W for the PTX30 LCD version 60 W for the PTX60 LCD version and 100 W for the PTX100 LCD version on a 50 Ohm load The output power can be set anywhere between 0 and the nominal power The PTX LCD is available either with embedded stereo coder option code S or in MONO MPX version The MONO MPX model can be used for monophonic broadcasting or stereophonic in conjunction with an external stereo coder The user interface of thexciter is constituted by a LCD display and a knob encoder Using this interface it s possible to read all the working parameters and to adjust the modifiable ones e g power level or working frequency This exciter offers a number of connectors that can be used to integrate it in complex systems it is possible to acquire and control external units such as amplifiers changeover systems coaxial relays etc and to network it with other modulators The PTX LCD is designed in a modular way the different functionalities are performed by modules that are then interconnected either directly the male connector of one module plugs in the the female connector of another one or by means of connectors ended cables This design allows easy servicing and replacement of the single modules User Manual Rev 2 3 18 07 07 7 58 PTX LCD RYB This page was intentionally left blank 8 58 Rev 2 3 18 07 07 User Manual n v R PTX LCD 5 Quick Start This chapter gives a concise view of the
54. vers or taking away any part of the piece of equipment Remove all the screws on the upper cover of the exciter After taking away the cover identify with the help of figure 10 1 the components of the exciter To remove the coder boards stereo and mono and PLL it is sufficient to remove the nuts that fix them to their hexagonal supports Note that in the lower parts of both boards there are strip line connectors that are plugged into the audio motherboard To remove the input audio board that is united with the audio connector board and the right part of the rear panel of the exciter unscrew the four nuts that fix the board to the hex supports on the audio mother board ore the five screws on the rear panel figure 10 2 and the three screws in the bottom part that fix the support of the connectors Ge 3 19KHz O RIGHT OOE t SCA2 Q LEFT RIGHT HEEL KDY Model Type Version CMono O Stereo D Serialn 0 ptions D ate Figure 10 2 The RF power amplifier joined to its heatsink is kept in place by three screw on the bottom of the exciter The screws are fastened in the heatsink and it s sufficient to remove them to release the amplifier To remove the power supply and the switching power supply the same procedure has to be followed i e the screws that fix the heatsinks to the bottom of the machine have to be removed Not
55. wrt 75KHz measured in 20 Hz 20 KHz band with 50 us deemphasys RMS detector 0 5 dB 20Hz 15Khz lt 0 02 lt 0 02 measured with 1 KHz and 1 3 KHz tones 1 1 75 kHz modulation gt 82dB 90 dB typical wrt 75 kHz measured in 20 Hz 100 kHz band with 50 us deemphasys RMS detector 0 05 dB 20 Hz 53 KHz 0 2 dB 53 KHz 100 KHz lt 0 02 lt 0 02 measured with 1 kHz e 1 3 kHz tones 1 1 75 kHz FM gt 50 dB typical 60dB gt 82dB 90 dB typical wrt 75 kHz measured in 20 Hz 100 kHz band with 50 us deemphasys RMS detector 0 5 dB 20 Hz 15 KHz lt 0 03 lt 0 03 measured with 1 KHz and 1 3 KHz tones 1 1 75 kHz modulation gt 50 dB typical 60 dB DB15 female includes FWD and RFL input for external AGC 6 digital analog input 2 relay output BNC type for power output deactivation User Manual RW ELETTRONICA Serial interface Optional telemetry board Options 103 108 AUDIOINP DIG AUDIOINP DIG D A converter Sampling frequency Data formats Digtal inputs Emergency switch User Manual PTX LCD DB9 female RS232 DTE or DCE selectable RS485 Optional DTE or DCE selectable DB25 female 8 analaog digital input 2 digital output 1 C serial interface External 24V battery Telemetry interface Digital audio input interface 24 bit From 32 to 96 KHz S PDIF AES EBU IEC958 and EIAJ CP340 1201 1 Unbalanced for coaxial cable with PIN RCA conne
56. y card connector T8 voltage on pin 25 of the telemetry card connector User Manual Rev 2 3 18 07 07 31 58 PTX LCD RYB 7 2 2 8 7 2 2 9 32 58 R1 activation deactivation of relay 1 R2 activation deactivation of relay 2 VB battery supply voltage only with option 24 volts OUT open collector service output SCA In this menu one can read the modulation level due to SCA and RDS input Figure 7 22 In the PTX LCD there are three input connectors for subcarrier signals called SCA1 SCA2 and RDS This menu displays the modulation levels percentage and kHz for each of them GenSt General settings menu 3 2 Ex Ex Ex Te 5 oe DD tos Figure 7 23 Uart Adr address serial port and IIC protocol of this device selectable between 1 and 200 If the exciter is not networked in a transmission system this value shall be set to 1 Baud Rate Baud rate of the serial port MODEM Configures the PTX LCD for the use of a modem present or for direct cable connection JUMP Shows the jumpers setting The symbol X means that a jumper is closed the symbol indicates it s open For the meaning of the jumpers setting see chapter 10 7 1 Rev 2 3 18 07 07 User Manual n R PTX LCD 7 2 2 10 Auset 7 2 2 11 Audio settings channels activation and level adjusting Audio Set 13 d E m 13 4B im m iW i 7 5 2 x Figure 7 24 MONO L audio level setting for th
57. y contact when the exciter goes from ON to OFF status the contact has an impulse to ground If ExPwr is disabled see 11 7 the meaning of this contact is Power Good closed Power Good open Alarm 8 GND 9 GND 10 Ext Fwd Pwr analog input for forward power of an external amplifier 11 Analog Input 6 12 Analog Input 4 13 Analog Input 2 14 GND 15 RLY 1 Out Digital output NO relay contact when the exciter goes from OFF to ON status the contact has an impulse to ground If ExPwr is disabled see 11 7 the meaning of this contact is SWR alarm closed OK open SWR 6 4 2 RS 232 Tipo DB9 female NC TX_D OMWNMDOAKRWN Q Z J Note Normally the PTX LCD is configured as DCE Data Communication Equipment for serial communication 18 58 Rev 2 3 18 07 07 User Manual ELETTRONICA 6 4 3 Telemetry optional board Type DB25 female GND 12V NC relay 1 NC contact relay 2 common contact clock C data lC open collector output Out in Telemetry menu telemetry analog input 1 10 telemetry analog input 3 11 telemetry analog input 5 12 telemetry analog input 7 13 GND 14 GND 15 relay 1 NO contact 16 relay 1 common contact 17 relay 2 NO contact 18 relay 2 NC contact 19 GND 20 GND 21 GND 22 telemetry analog input 2 23 telemetry analog input 4 24 telemetry analog input 6 25 telemetry analog input 8 Jo oo0oo0oo0oo0o0000000 oooocoo0oo0oo0o000000 ei ooNO
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