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PTX-LCD

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User Manual

Rev. 2.3 - 18/07/07

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.

D2
D1

JP8

JP11

JP10

JP9

JP12

JP3

JP2

Figure 11-16

Summary of Contents for PTX-LCD

Page 1: ...Manufactured by Italy User Manual Volume 1 PTX LCD 8 bit Version...

Page 2: ...J B e r t i 1 1 0 7 0 1 2 2 T R D S P U p g r a d e J B e r t i 1 8 0 7 0 7 2 3 D e s c r ip t io n u p g r a d e o f t h e j u m p e r o n p a n e l c a r d T R D S P r e m o v a l f r o m 8 b it v e...

Page 3: ...scription 18 7 Operating System 21 7 1 Start up 21 7 2 Operating System 22 8 Technical Specifications 37 8 1 Mechanical Specifications 37 8 2 Electric Specifications 37 9 Factory Settings 41 10 Identi...

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Page 5: ...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 WARNING always dis...

Page 6: ...PTX LCD 2 58 User Manual Rev 2 3 18 07 07 This page was intentionally left blank...

Page 7: ...d 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 guara...

Page 8: ...07 07 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 mo...

Page 9: ...eck the breathing of the victim opening his mouth 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...

Page 10: ...If 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...

Page 11: ...eophonic 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 para...

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Page 13: ...m form a list of options 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...

Page 14: ...ue The required values are the following 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 110...

Page 15: ...zzer and by a message on the display to push the encoder if the current settings are not acceptable If the use pushes the encoder while the message is displayed the exciter will start in stand by mode...

Page 16: ...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...

Page 17: ...RF Out RF In RF Out Remote Telemetry PTX LCD RF Amplifier Figure 5 3 Switch on the exciter at minimum power Turn both trimmers completely clockwise Rise the power emitted by the exciter until on the i...

Page 18: ...e 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...

Page 19: ...is delivering the set power blinking the exciter didn t reach the set power for external reasons 5 EXT RF MUTE the exciter is not delivering power because of an externa interlock 6 DISPLAY LCD displa...

Page 20: ...immer 10 SCA2 SCA2 BNC connector with level adjusting trimmer 11 SCA3 RDS SCA3 RDS BNC connector with level adjusting trimmer 12 FUSE mains fuse with voltage changer 13 Telemetry DB25 connector of opt...

Page 21: ...C connector with level adjusting trimmer 8 MPX Unbal Unbalanced MPX BNC connector with level adjusting trimmer 9 Level IMP ADJ Trimmers for adjustment of Left and Right input Digital section 10 Dig An...

Page 22: ...bled 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 Inpu...

Page 23: ...elemetry 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...

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Page 25: ...software re initialization Figure 7 1 After about 10 seconds a new window will show up while the buzzer emits an intermittent sound Fig 7 2 Figure 7 2 While this window is displayed pushing the encod...

Page 26: ...EEPROM as it is 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...

Page 27: ...l flow chart of the menu system Amp Tm Preset ModPk Predefinito Men di scambio Admin Main Amplifier Power Supply External Power External Status External Frequency Telemetry SCA General Settings Audio...

Page 28: ...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 Figure 7 8 Reflected power reading in watt Reading...

Page 29: ...istration 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...

Page 30: ...ion of the distibution af peak modulation levels With this graphic you can get a good idea of the modulation level reached during the working time Each horizontal bar corresponds to the fraction of th...

Page 31: ...e 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 win...

Page 32: ...sed inWatts 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...

Page 33: ...nt of the final stage of the amplifier TEMP temperature of the amplifier 7 2 2 3 Suppl This menu is for information only it displays to the user the different voltages produced by the power supply Fig...

Page 34: ...indicator related to the status of PTX LCD MAIN menu FPWR forward power of the amplifier percentage RPWR reflected power of the amplifier percentage 7 2 2 5 ExSts This menu monitors the input voltage...

Page 35: ...rd 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 fie...

Page 36: ...S This menu displays the modulation levels percentage and kHz for each of them 7 2 2 9 GenSt General settings menu Figure 7 23 Uart Adr address serial port and IIC protocol of this device selectable b...

Page 37: ...ersion 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...

Page 38: ...T 0 4 5 8 s 0 3 s 1 m B d 3 m B d 4 1 The best results with this function will be obtained investing some time in experimentation with your own radio programs use the man MODPK to check your average...

Page 39: ...s 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 deactivatio...

Page 40: ...e if the stereo option is installed Figure 7 8 Pilot0 Pilot tone phase not available Pilot Activation deactivation of the pilot tone can be useful for certain measurements Chan0 Phase of the right cha...

Page 41: ...ical 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...

Page 42: ...s 1 1 75 kHz modulation MPX operation Composite FM S N 82dB 90 dB typical wrt 75 kHz measured in 20 Hz 100 kHz band with 50 us deemphasys RMS detector MPX frequency amplitude response 0 05 dB 20 Hz 53...

Page 43: ...tions 03 External 24V battery 08 Telemetry interface AUDIOINP DIG Digital audio input interface AUDIOINP DIG D A converter 24 bit Sampling frequency From 32 to 96 KHz Data formats S PDIF AES EBU IEC95...

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Page 45: ...he 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 Ex...

Page 46: ...t 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 frequencies Admin ExFrq 8...

Page 47: ...ows 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 VCO bo...

Page 48: ...he 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...

Page 49: ...PA CARD JP11 JP9 BACKLIGHT LED LAMP BACKLIGHT LAMP RS 232 JP1 FLAT 9 AUDIO INPUT CONNECTOR CARD SWITCHING POWER SUPPLY 2 SWITCHING POWER SUPPLY 1 240V 220V 120V 110V MAINS VOLTAGE TELEMETRY EXTERNAL R...

Page 50: ...ing power supply of the same kind under the first one 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 pow...

Page 51: ...measurement of PA current R35 adjustment of the maximum PA current R39 adjustment of the measurement of forward power R51 adjustment of the measurement of reflected power R98 adjustment of the measure...

Page 52: ...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 adju...

Page 53: ...3 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...

Page 54: ...ominal value C4 R40 R33 R39 C2 R17 R16 R15 R11 Figure 11 7 RV1 RV3 D2 D1 D3 RV2 Figure 11 8 11 4 1 Adjustments settings and indicators Stereo Coder C2 Pilot tone phase C4 Pilot tone frequency R11 Outp...

Page 55: ...ed 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 b...

Page 56: ...lding 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...

Page 57: ...30W 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 sign...

Page 58: ...eters set in case of exciter reset Italy X X 1 0 1 Default parameters set in case of exciter reset CSI X X 0 1 1 Default parameters set in case of exciter reset China X X 1 1 1 Reserved for future app...

Page 59: ...sed 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 option...

Page 60: ...selectable from 32 to 96 KHz This option supports S PDIF AES EBU IEC958 and EIAJ CP340 1201 data formats 11 10 1 Functional description The option section is placed on the rear part of the PTX LCD an...

Page 61: ...1 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...

Page 62: ...PTX LCD 58 58 User Manual Rev 2 3 18 07 07 Figure 11 17...

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