DTVPHC4 - RVR Elettronica SpA Documentation Server
Contents
1. 1 MAINS VDE plug for the mains power supply 2 AUX PS Auxiliary VDE plug for the feeding of external devices tipically an exciter 3 MAINS FUSE Protection fuse for the input of the mains power supply 10A 4 AUX FUSE Protection fuse for the auxiliary output AUX fuse 10A 5 6 7 8 SPLITTER OUT 1 to 4 Power Splitter Outputs N type connector to drive Power Amplifiers 9 SPLITTER INPUT Exciter s R F Input connector N type 10 I C DB9 connector for I C bus networking 11 TELEMETRY DB25 telemetry connector 12 RS232 DB9 connector to link the amplifier with external devices 13 COM BUS DB15 connector for interfacing with the five amplifiers 14 REM CTRL Connettore di controllo DB9 per il collegamento dell apparato a dispositivi esterni 15 INTERLOCK 1 BNC connectors to inhibit an exteral device as an exciter In case of fault the inner connector is shorted to ground 16 INTERLOCK 2 BNC connectors to inhibit an exteral device as an exciter In case of fault the inner connector is shorted to ground 17 HEAT SINK Heat sink 18 19 20 21 COMBINER INPUT 1 to 4 Power Combiner Inputs 7 16 from the Power Amplifiers 22 HEAT SINK Heat sink 23 HEAT SINK Heat sink Rev 1 0 04 11 08 User Manual RaW Ra ELETTRONICA 6 3 Connectors Description 6 3 1 Telemetry Connector Type DB25 Female2. INPUT uLir 4 a OUTPUT 3 INPUT 3 lt E OUTPUT 4 D gt INPUT 4 lt AMPLIFIERS ABSORBER OUT 3 3 ABSORBER OUT 4 3 9 1 Operating Blocks 9 1 1 Power Supply It in the HC5 is present only one mains transformer with different secondary winding The secondary used are 18 0 18V 0 11 5 V 0 17V for the feeding of the control interface card that will go to feed all the cards that compose the machine The rectifiers and the stabilizers are situated on the mentioned card 9 1 2 Control Interface Card All the measure signals of all the cards transit on this card and provides to furnish the necessary feedings to all the cards of the apparatus The circuit also comprises a card with a CPU mounted above that has the function of serial communication in standard 485 Are managed some protections of the system too like for example the power reduction of the amplifiers in case of anomalies or the intervention of the emergency fans User Manual Rev 1 0 04 11 08 31 34 DTVPHC4 R Y R 9 1 3 9 1 4 9 1 5 9 1 6 9 1 7 32 34 Input Splitter Circuit The Power Splitter circuit mounted on the rear part of the equipment in the opposite side of the input connector to the exciter and of the RF outputs to the amplifiers The circuit is realized with strip line plus coaxial cables Five resistive termination placed near to the output serves to absorb a
3. DTVPHC4 4 RejPwrT Ana Out Unbalanced power 4 3V x 1500W s o J14 2 ch4aT Disabled 25 3 GND GND o E 4 RflPwrT Ana Out Reflected power 4 3V x 1500W o9 5 OC_EXCT Dig Out OC Active when interlock is active 3 9 6 OC_SET4T Dig Out OC Active when SET4 threshold surpassed 5 7 GND GND 5 8 INONT Dig In ON command 9 OC_SET1T Dig Out OC Active when SET1 threshold surpassed 10 OC_WAITT Dig Out OC Active for Wait alarm presence 11 IN_RSTT Dig In Alarms Reset 12 OC_OFFT Dig Out OC Active when OFF 13 IN_INHT Dig In Keep at GND potential to inhibit 14 TEMPT Ana Out Temperature 3 9V x 100 15 Ch_5SDA Disabled 16 FWDPWRT Ana Out Forward power 4 3V x 6000W 17 OC_FAULTT Dig Out OC Active for Fault Alarm presence 18 OC_SET3T Dig Out OC Active when SET3 threshold surpassed 19 INP_PWRSCL Ana Out Input power 4 3V x 50W 20 IN_OFFT Dig In OFF command 21 GND GND 22 OC_SET2T Dig Out OC Active when SET2 threshold surpassed 23 OC_LOCT Dig Out OC Active when in local mode 24 VNST 12 Vcc Unregulated voltage 25 OC_ONT Dig Out OC Active when ON Notes To give a command to the HC5 ON OFF Reset bind the relative pin to ground for approx 500 ms OC output Open Collector are Active when conducing 6 3 2 RS232 Connector Type DB9 Female 1 N C TXD RXD Internally connected to 7 and 8 GND N C Internally connected to 4 and 8 Internally connected to 4 and 7 N C OMAN OAR WNDY Us
4. The function of this menu is essentially a help for the technician to identify the causes of possible malfunctions of the transmitter Various menu Two operations can be performed using this menu e Setup the address of the I C serial bus type connection e Setup the kind of visualitation in the default menu I2 Addr 1 DisPlauy D149 The default address of lC communication is relevant when the coupler is connected with other RVR devices that use this protocol We raccomend not to change this parameter if not necessary The visualitation mode can be Digital the default mode described in chapter 5 3 or Analog D Rev 1 0 04 11 08 User Manual RR DTVPHC4 In analog mode a little triangle indicates the reflected power level set in the threshold set menu under RflWar while the bar below shows the in real time level reflected power This last kind of visualitation is best used when the combiner output is connected to a device that has to be tuned as a cavity 5 3 7 Versions menu This menu shows the hardware H V and software versions S V of the machine H W 1 81 Sal 2 g 5 3 8 Protection system The protection system implemented in geizel coupler is based on two types of reactions the Foldback and the temporary disabling User Manual Rev 1 0 04 11 08 21 34 DTVPHC4 6 6 1 22 34 R W R ELETTRONICA Controls Indicators and Connectors This chapter
5. LE NOTE If it were necessary to replace an amplifier repeat the steps before descripted because the new unit must be harmonized in the system User Manual Rev 1 0 04 11 08 11 34 DTVPHC4 R Y R 5 2 6 5 2 7 12 34 Behavior of the system in function of the working parameters The DTVPHC4 apparatus puts in action various operation modality according to the different conditions of work in which it is come to be situated The DTVPHC4 apparatus has two groups of disposed fans on the panels and to the inside ordinary group and emergency group The ordinary group must always work when the apparatus is set in ON position and during the short moments of post ventilation the emergency group enters in function when the total power on the absorbers resistances exceeds 200W and or when the temperature of the warmer resistance exceeds 40 C When the emergency fans group enters in function on the frontal panel of the DTVPHC4 an yellow LED with Fans On label is lit on For post ventilation is understood that the ordinary fans group continues to work for around 3 minutes after the set in OFF position of the DTVPHC4 Each hour spent in OFF position the DTVPHC4 switched on for around 3 minutes the ordinary fans group this to remove the heat accumulated to the inside of the circuits An electronic circuit check if the fans are regularly feeding in case of irregularity comes generated an Fault alarm that interrupts the op
6. 10 Maintenance Procedures 34 10 1 Routine Maintenance 34 Manuale Utente Rev 1 0 04 11 08 i DTVPHC4 Rev 1 0 04 11 08 WR ELETTRONICA This page was intentionally left blank Manuale Utente RR DTVPHC4 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 Lg 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 LE WARNING this device can irradiate radio frequency waves and if its not installed following the instructions contained in the manual and local regulations it could generate int
7. es one of the amplifiers it suspends its operation temporary while the others continues to work in this case the system with DTVPHC4 doesn t return to the power value of RF out precedent to this event User Manual Rev 1 0 04 11 08 13 34 DTVPHC4 RYB 5 2 9 14 34 Remedy Regulate the signals phase of the of the amplifiers until to obtain a value of Rej PWR inferior to 200W When one of the amplifiers is set in Local position its way of work is differentiated from the way of the other amplifiers When it comes controled a set of OFF acting on DIVPHC4 the amplifier in Local reacts with a set of Inhibit instead that OFF The situation doesn t constitute risk of damage for the whole system only an imperfection of form When it comes controled a set of Reset of protections acting on the command of DTVPHC4 the amplifier in Local it doesn t effect his reset When the amplifier set in Local is in position OFF isn t possible change its position to ON acting through the commands on DTVPHC4 When the amplifier set in Local it comes commuted in Remote this aligns itself to the set planned from the commands operated on DTVPHC4 Risks for the DTVPHC4 system with amplifier Some operational situations are potentially harmful for some part of the system When the cable of interconnection of the signals of command doesn t connect all the apparatuses of the system the amplifiers not connected doesn t rea
8. 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 User Manual Rev 1 0 04 11 08 1 34 DTVPHC4 R Y R 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 Lg DO NOT RETURN UNITS WITHOUT OUR AUTHORIZATION AS THEY WILL BE REFUSED 4 Be sure to enclose a written technical report where mention all the problems found and a copy of your original invoice establishing the starting date of the warranty Replacement and warranty parts may be ordered from the following address Be sure to include the equipment model and serial number as well as part descr
9. Connect the outputs of the amplifiers type 7 8 to the inputs of the combiner joining section type 7 16 Rev 1 0 04 11 08 User Manual RR DTVPHC4 Connect the connector type 1 5 8 of general RF output of the combiner to the antenna or to a dummy load able to dissipate the power Connect through a coaxial cable a BNC connectors with a Alarms Interlock cable to the Interlock connector of the exciter you see the scheme included in each station like reference Connect the telemetry connector to the Telemetry connector of the exciter if forecasted in the configuration see the manual of station Connect the feeding cable to the relative MAINS connector on the rear panel C WARNING the feeding connector is a bare terminals make sure that the cable is not under voltage during the connection LE WARNING is essential that the machine comes connected correctly to ground to ensure both the safety of operation as well as the correct working of the equipment 5 2 Operation To perform its intended pourpose the DTVPHC4 is always used in a transmitter comprising an exciter four RF amplifiers The DTVPHC4 verifies the excitation group only for as concern the interruption of RF power and the power supply When the DTVPHC4 comes put under voltage verify that the two ON LED are lit The LCD display shows a presentatio screen and after a few seconds it will pass to the default screen showing the values of the forward and ref
10. ON command switch on the complete system e OFF command switch off the complete system Inhibit command the system operation is totally suspends until to persists the signal that drives it e Reset command effect one reset of the protections that is propagated for all the amplifiers Of norm the system DTVPHC4 with amplifiers must work with all the apparatuses setting in Remote position In the case any apparatus is not in the Remote condition it doesn t constitute a condition of risk of damages to any electric part of all the system When DTVPHC4 is set in Remote then the complete system accepts commands only from the remote connections When DTVPHC4 is set in Local and all apparatuses are in Remote then it s possible to command the complete system from the DTVPHC4 frontal panel When some apparatus was not connected in Remote the behavior of that apparatus is not conforming to the behavior of the others in answered to the orders operated on the system The operation parameters of each apparatus can be seen in any moment navigating through the settable menu with the keys on the frontal panel This navigation is possible with the apparatus in Remote or in Local position The commands through keys on frontal panel instead are possible only when the apparatus is in Local position The need to effect commands only on the amplifiers apparatuses could have utility of diagnostic character the norma
11. Reflected Warning The thresholds are expressed as percentage of full scale value of the relevant quantity The full scale values for the DTVPHC4 are the following e Forward Power 6000 W e Reflected Power 1500 W To change the values of the thresholds execute the following procedure e Select the line to modify UP and DOWN buttons e Pushthe ENTER button e Modify the value of the threshold UP and DOWN buttons e Push the ENTER button to confirm The following figure shows an example of configuration for this menu PurGdl gt SH PurGd gt 50 a Rt lWar gt 7B In questo esempio le soglie degli allarmi sono e PwrGd 1 8000 W 80 X 6000 W e PwrGd2 3000 W 50 X 6000 W RflWar 750 W 50 X 1500 W 5 3 5 Alarms Menu Alm This screen gives to the user information regarding the status of the protection system included in the geizel coupler It is constituted by a certain number of lines each containing the name of a variable controlled by the system and the kind of intervention that is undertaken by the system in case the parameter surpasses its limit The latter can be of the kind X Y Wait or Dis Disabled User Manual Rev 1 0 04 11 08 19 34 DTVPHC4 R WR 5 3 6 20 34 The aspect of this multi line screen is the following only two lines at a time are visible use the UP and DOWN buttons to scroll Fwd Fur kfl Pur Ine Pur L F A I F A Tem kej Pur Hains SWE EPF
12. system and to modify the changeable parameters BNC RF monitor output The output level is 60 dB below the power output Air Filter for Power Splitter and Combiner Red LED indicating the presence of a malfunction that could not be resolved automatically after the RETRY attempts set up Rev 1 0 04 11 08 User Manual RY Ra 17 FANS ON 18 ON 19 RF PWR ADJ 21 FOLDBACK 21 AIR FILTER 22 amp ADJ 23 AIR FILTER User Manual DTVPHC4 Yellow LED giallo lit when enters in function the group of emergency fans caused from excess of temperature exceeded the 45 C unbalancement above the 200 W or post ventilation Green LED lit when the geizel coupler is sithed on Trimmer for the power adjustment turn completely in clockwise sense to have the maximum power Yellow LED if lit indicates the intervention of the automatic reduction of the delivered power to 1200W maximum for each amplifier Air Filter for Power Splitter and Combiner Phase regulation of the input RF channels of the amplifiers Don t USE METALLIC TOOLS FOR THE REGULATION Air Filter for Power Splitter and Combiner Rev 1 0 04 11 08 23 34 DTVPHC4 R Y R 6 2 Rear Panel 24 34
13. the upper view of the device with the indication of the different components 1 Combiner Section 2 Power Measure Board not visible 3 CPU group 4 Phase Regulation Board not visible 5 Control card of the absorption resistances 6 Control Interface Card 7 Power Measure Board not visible 8 Combiner Output EIA 1 5 8 9 LEDs Card and trimmer Power Adjust User Manual Rev 1 0 04 11 08 29 34 DTVPHC4 8 2 Modules Identificarion bottom view 30 34 1 2 3 4 5 6 7 RW R ELETTRONICA Unbal Power card Temperature Sensor Unbal Power card Unbal Power card Unbal Power card Unbal Power card Input Splitter Circuit Rev 1 0 04 11 08 User Manual RR DTVPHC4 9 Theory of Operation The figure shows the block diagrams of DTVPHC4 A general description of the machine s operation has been given in the precedents chapters while in this chapter comes described the operation of the various blocks POWER SPLITTER POWER COUPLER OUTPUTI INPUT 1 E d OUTPUT ABSORBER OUT 1 3 2 OUTPUT2 INPUT 2 2 ABSORBER OUT 2 3
14. there is a RF splitter circuit that divides into 4 parts the signal coming from the modulator Each portion of signal is connected to a circuit that regulates the electric phase and in part the level of its RF signal The circuit in question is named as Phase Shifter The Phase Shifter circuit has 4 identical sub circuits one for each of the 4 way in which is divided a signal for every way there are present 2 settings then 2x4 in all which are accessible on the front panel see chap 6 1 item 22 The Level and Phase settings are not isolated but they are interdependent although clearly prevails on the effect than the effect on Phase Level e General considerations on RF signal The system consists of amplifiers interconnected through the RF Splitter DTVPHC4 combiner and it working properly if they are respected these conditions User Manual Rev 1 0 04 11 08 9 34 DTVPHC4 R Y R 5 2 5 10 34 a The RF Power Output on each of amplifiers is equal with a margin of difference maximum allowed of 0 25dB b The a condition must be respected in order to consent to the system that Non Linear Signal Precorrection works properly on all amplifiers The b condition must be respected in order to consent to the system that Linear Signal Equalization works properly to compensate the characteristics on the BPF Channel connected to DTVPHC4 therefore before the antenna Both two conditions are irrelevant to assure that m
15. time the auxiliary mains output is opened so that if an exciter is connected to it il will be shut off When the geizel coupler is switched OFF the software waits a few minutes to permit the proper cooling of the device and then sends a signal to the relays of the blowers to turn them off too Each two hours while the machine is OFF the software enables the blowers for a while to dissipate the heat generated by the circuitry and to avoid possible malfunctions of the blowers due to long inactivity periods Switching ON again the geizel coupler the interlock circuit is opened reenabling the power emission in the connected exciter the auxiliary mains plug supply is powered and the blowers are restarted 5 3 2 Power menu Pwr This multi line scrollable menu allows the user to read all the measurements related to the behaviour of the power section of the combiner e Forward Power Fwd Pwr e Reflected Power Rfl Pwr Standing Wave Ratio SWR Not active Input Power Inp Pwr e Reject SWR Rej SWR Depending on the configuration of the machine some of the measures could be deactivated The complete aspect of the screen is the following figure please note that only two lines at a time are visible use the UP and DOWN buttons to scroll User Manual Rev 1 0 04 11 08 17 34 DTVPHC4 R WR 5 3 3 5 3 4 18 34 Fwd Pur 5 61 Kl kfl Pur lb W SWE DF f Int Pur ffF li Reg Pur 15 W Power Amplifie
16. DTI VPHC4 User Manual Volume 1 tly CE Manufactured by RVR File Name DTVPHC4_EN P65 Version 1 0 Date 04 11 2009 Revision History 07 11 08 oo T T G O DTVPHC4 User Manual Version 1 0 Copyright 2008 R V R Elettronica SpA Via del Fonditore 2 2c 40138 Bologna Italia Phone 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 photocpying recording or by any information strorage and retrieval system without written permission of the copyright owner n v R DTVPHC4 Table of Contents 1 Preliminary Instructions 1 Warranty 1 3 First Aid 2 3 1 Treatment of electrical shocks 2 3 2 Treatment of electrical Burns 3 4 General Description 4 5 Quick reference to installation and use 6 5 1 Preparation 6 5 2 Operation 7 5 3 Software 16 6 Controls Indicators and Connectors 22 6 1 Front Panel 22 6 2 Rear Panel 24 6 3 Connectors Description 25 7 Technical Specifications 27 7 1 Dimensional and Environmental Specifications 27 7 2 Electrical Specifications DTVPHC4 03KUV 27 8 Electrical description 28 8 1 Modules Identificarion upper view 29 8 2 Modules lIdentificarion bottom view 30 9 Theory of Operation 31 9 1 Operating Blocks 31 9 2 Phase Regulation between the several Amplifiers 33
17. ct the deriving commands from the DTVPHC4 apparatus This constitutes possible cause of permanent damages to the DTVPHC4 If the connection of the neutral of the mains power stops in any part of the electric installation inside or outside of the apparatus are possible permanent SERIOUS DAMAGES to all the apparatuses of the system The apparatus DTVPHC4 MUST be connected to its driver exciter apparatus through a cable that allows the interrupt of the oiperation in case of intervention in protection This connection could be of two types e Signal of low voltage that cuts off the power of the driver exciter system e Feeding of the exciter connected to the plug of mains voltage foreseen and available on the rear panel The first solution is indispensable when DTVPHC4 system with amplifiers is connected to the telemetry whose circuits are install on the exciter If at least one of the two connections doesn t come done are possible permanent damages to the DTVPHC4 Rev 1 0 04 11 08 User Manual RR DTVPHC4 The RF power cables that connect the output of each amplifier with the DTVPHC4 combiner must be well locked If the contact between the connectors is not correct leaks of energy in RF could be verified This energy has the power to influence dangerously on the behavior of electric circuits of other apparatuses in the vicinities of the transmitter beyond that on the same transmitter The power in game on these connections is pot
18. describes the front and rear panels of the DTVPHC4 with a brief indication of all the different components Front Panel woo CI e 1 ESC 2 LOC REM 3 ALARM RESET 4 DISPLAY 5 ON 6 WAIT 7 FAULT 8 LOCAL 9 OVER 10 BRIGHTNESS 11 ENTER 12 RIGHT DOWN 13 LEFT UP 14 R F TEST 15 AIR FILTER 16 FAULT 16 17 18 19 20 Button to exit from a menu Switch to select the local or remote control modes Button used to manually reset the protection system also for the amplifiers in the case is correctly connected LCD Display Green LED lit when the geizel coupler is switched on Yellow LED indicating that the geizel coupler is waiting for a condition that is blocking the power output to be removed Red LED indicating that a fault that cannot be automatically reverted Yellow LED indicating that the geizel coupler in local control mode Yellow LED lit when the system have reached the maximum delivery power Trimmer to regulate the brightness of the LCD display Button used to accept a parameter s value or to enter into a menu Button used to navigate in the menu system and to modify the changeable parameters Button used to navigate in the menu
19. e different working parameters are made available for the remote control applications on the telemetry connector as voltage levels that are proportional to the value of the parameter under consideration Digital output signals related to alarms or warnings are also present on the connector together with the digital input like ON OFF switching or alarms reset The DTVPHC4 must be connected to the exciter of the transmitter using a interlock cable so that it is possible for it to deactivate RF power emission in case of misfunctioning of the transmitting system An analogous effect can be reached also in case the exciter misses the interlock functionality connecting the mains supply of the exciter to the auxiliary mains plug of the DIVPHC4 AUX OUT AC LINE This plug Is in fact opened using a relay under the same conditions that cause the activation of the interlock User Manual Rev 1 0 04 11 08 5 34 DTVPHC4 R Y R 5 5 1 6 34 Quick reference to installation and use This chapter is intended to summarize the necessary points for the installation of the device In case any of the arguments is unclear for example when you use the combiner for the first time we suggest to carefully read the whole manual Preparation Unpack the DTVPHC4 and before any other operation check the unit for any shipping damage in particular check that all the controls and connectors on the front and rear panels are in good conditions I
20. enance information and electrical adjustment for the DTVPHC4 geizel coupler Warning When the coupler is in function inside are present dangerous voltages elevated currents and are presents RF signals of strongly power Don t remove any cover without switching off the system first and close all covers before restarting the system Ensure all primary power is disconnected from the amplifier before attempting equipment maintenance Routine Maintenance The only regular maintenance needed by DTVPHC4 is the periodic substitution of the blowers and the cleaning of dust filters and any dust accumulated inside the amplifier The time between overhauling of the blowers depends upon several environmental factors temperature humidity dust pollution etc It s advisable to check the unit every 6 months and to substitute noisy blowers Blowers should be changed as a matter of course at least not beyond the 35000 hours of job Rev 1 0 04 11 08 User Manual
21. entially able to generate overheatings with possible fire of the cables LE WARNING The interconnection cables between amplifiers and DTVPHC4 contains TEFLON the combustion of the TEFLON generates HIGHLY TOXIC GAS for each living being The amplifier requires high values of current from the mains If the cables that furnish the electric general feeding are not well locked fires could be verified 5 2 10 Risks for the personnel The system DTVPHC4 with amplifiers could also work when one or more amplifiers have been physically removed from the system For the same nature of the type of combiner the transmitter in RF power it is possible potenzialmente effect the removal of an apparatus maintaining in operation the transmitter in RF power without generated signals come of overloaded that interrupts the functioning of it Because the physical removal of an amplifier happens through the maneggiamento of the connectors of RF power connected to the amplifier the operator should handle points where it is present RF energy that doesn t come interrupted from circuits of protection For the nature of the adopted combiner type the removal of an apparatus is potentially possible maintaining in function the transmitter in RF power without that come generated signals of overload that interrupts the operation Because the physical removal of an amplifier happens through the handling of the RF power connectors connects to the amplifier the operat
22. er Manual Rev 1 0 04 11 08 25 34 DTVPHC4 6 3 3 PC Connector Type DB9 Female OMONOARWHND NC SDA Serial Data SCL Serial Clock NC GND GND 6 3 4 REM CTRL connector Type DB9 Male OMONOaARWHND 6 3 5 Com Bus GND 485 485 IRQ IN RST C Reset Combiner Command IN ON C On Combiner Command IN OFF C Off Combiner Command INH PJ Amplifier s Inhibit EXC ON On Exciter Command Type DB15 male oo ae 26 34 OMONOAHRWHND GND 485 ON OFF C On Off combiner IRQ PWR REG Power Regulation NC IN ON PJ On amplifiers IN OFF PJ Off amplifiers 485 GND ST BY Stand by GND GND INH PJ Inhibit amplifiers RST PJ Reset Amplifiers Rev 1 0 04 11 08 RaW Ra ELETTRONICA User Manual n R DTVPHC4 7 Technical Specifications 7 1 Dimensional and Environmental Specifications Cabinet Dimensions 446 mm x 262 mm x 651 mm Panel Dimensions 483 mm x 266 mm Weight Approx 30 Kg Operating Temperature Range 10 C 50 C Humidity 95 Maximum whithout condensation 7 2 Electrical Specifications DTVPHC4 03KUV Characteristics of the system constituted from nr 4 amplifier coupled between them with DTVPHC4 03KUV Input Power 14W max for 3kW Output Output Power 3kW Input Output impedance 50 Ohm Input connector N type female Output connector 1 5 8 type female Mains Power Supply Mono phase 230V 50 60Hz Operation limit
23. eration of the apparatus without attempts of restart This alarm appears on the display and on ared LED positioned between the fans of the frontal panel An advanced measure circuit checks the power value on each of the absorbers resistances and carries out the sum This sum is available as measured parameter on display as Rej PWR When the power of one of the absorbers resistances exceeds the limit of 800W the DTVPHC4 reacts reducing the power of all amplifiers to maximum half of the power The power reduction reenters only when the total power on absorbers resistances returns under the 200W In case that the phase regulation between the apparatuses is not optimal with Rej PWR value at regime superior to 200W the system doesn t return to full power after a phase of protection that foresees the reduction The reduction of power comes signalled on the DTVPHC4 frontal panel with a yellow LED and with the Fold Back label Protection Circuits The DTVPHC4 apparatus disposes of protection circuits that arrest temporarily and or definitely the functioning of the whole transmitter system 1 Protection from excessive output forward power Fwd PWR It intervenes at 7200W and it effect until to 8 attempts in the short period exhausted the restoration attempts blocks the apparatus definitely signalling the status with a Fault red LED placed on the frontal panel If the total of the 8 attempts doesn t happen within the period of an hour t
24. erferences in radio communications This is a CLASS A equipment In a residential place this equipment can cause hash In this case can be requested to user to take the necessary measures R V R Elettronica SpA reserves the right to modify the design and or the technical specifications of the product and this manual without notice 2 Warranty Any product of R V R Elettronica is covered by a 24 twenty four month warranty For components like tubes for power amplifiers the original manufacturer s warranty applies R V R Elettronica SpA extends to the original end user purchaser all manufacturers warranties which are transferrable and all claims are to be made directly to R V R per indicated procedures Warranty shall not include 1 Damage while the equipment is being shipped to R V R for repairs 2 Any unauthorized repair modification 3 Incidental consequential damages as a result of any defect 4 Nominal non incidental defects ua 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 this procedure 1 Contact the dealer or distributor where you purchased the unit Describe the problem and so that a possible easy
25. es at 1650W and it effects until to 8 attempts in the short period exhausted the restoration attempts blocks the apparatus definitely signalling the status with a Fault red LED placed on the frontal panel If the total of the 8 attempts doesn t happen within the period of an hour the counter of the interventions is reset giving back again to others 8 possibility of restoration During the temporary arrest on the DTVPHC4 frontal panel appears the yellow LED indication with Wait label 5 Protection from excessive temperature on at least one of the 5 Temp absorber resistances It intervenes at 80 C and it maintains until that the value has exceeded the threshold when the value descends again under the limit the functioning returns normal 6 Protection of electric net feeding Mains It intervenes when the mains voltage that feeds the apparatus DTVPHC4 exceeds the limits of 20 and the value until to that is maintained is outside from the limit interval returns normal the operation when the value is within the limits interval 5 2 8 Functioning Anomalies Some operational conditions could cause a way of work of the apparatus not optimal Anomaly When the signal phase regulation of the 4 amplifiers is not optimized the power on resistances absorbers Rej PWR it could exceed the value of 200W If during the operating period of the transmitter a situation is verified that involves the intervention of protection with power reduction
26. he counter of the interventions is reset giving back again to others 8 possibilities of restoration During the temporary arrest on the DTVPHC4 frontal panel appears the yellow LED indication with Wait label Rev 1 0 04 11 08 User Manual RR DTVPHC4 2 Protection from excessive output reflected power Ref PWR It intervenes at 1800W and it effects until to 8 attempts in the short period exhausted the restoration attempts blocks the apparatus definitely signalling the status with a Fault red LED placed on the frontal panel If the total of the 8 attempts doesn t happen within the period of an hour the counter of the interventions is reset giving back again to others 8 possibility of restoration During the temporary arrest on the DTVPHC4 frontal panel appears the yellow LED indication with Wait label 3 Protection from excessive excitement input power Inp PWR It intervenes at 50W and it effects until to 8 attempts in the short period exhausted the restoration attempts blocks the apparatus definitely signalling the status with a Fault red LED placed on the frontal panel If the total of the 8 attempts doesn t happen within the period of an hour the counter of the interventions is reset giving back again to others 8 possibility of restoration During the temporary arrest on the DTVPHC4 frontal panel appears the yellow LED indication with Wait label 4 Protection from excessive Rejected power Rej PWR It interven
27. iption and part number R V R Elettronica SpA Via del Fonditore 2 2c 40138 BOLOGNA ITALY Tel 39 051 6010506 3 First Aid The personnel employed in the installation use and maintenance of the device shall be familiar with theory and practice of first aid 3 1 Treatment of electrical shocks 3 1 1 If the victim is not responsive Follow the A B C s of basic life support e Place victim flat on his backon a hard surface Open airway lift up neck push forehead back Figure 1 e clear out mouth if necessary and observe for breathing e if not breathing begin artificial breathing Figure 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 1 Figure 2 Check carotid pulse Figure 3 if pulse is absent begin artificial circulation Figure 4 depressing sternum Figure 5 2 34 Rev 1 0 04 11 08 User Manual MR DTVPHC4 Figure 3 Figure 4 Figure 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 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 s
28. justing the relative phases to pass them through five external RF power amplifiers and then to combine the output of the amplifiers into a single RF amplified signal to be forwarded to the antenna output The DTVPHC4 is produced in the version for four transmitters of 1 5 kW max output power everyone for example DTVPA for a total nominal power of 6 kW Support channels 8 9 10 11 12 American Band referred to 8VSB standard Exciter Uh e DTVPHC4 vv RF p Hi Amplifier 1 C o RF RF Amplifier 2 Amplifier 3 Amplifier 4 The nominal working principle of a FM transmitter based on a geizel coupler scheme like DTVPHC4 foresees that the used amplifiers shall produce the same RF power that will be added with the same phase Possible differences in the power level or phase of the amplifiers generate the so called unbalancement power that is totally dissipated inside the coupler The DTVPHC4 guarantees the overall working of the transmitter even if one of the amplifiers is completely off service In such case the power generated by the surviving amplifier is routed to the antenna anyway the other part of the delivered power that is unbalancement power is dissipated inside the combiner The DTVPHC4 is controlled by a microcontroller system that includes a LCD display and a series of ke
29. l operation of the apparatuses foresees that they are set in position Remote therefore in condition of answer to the deriving commands from the DTVPHC4 The set of the apparatus DTVPHC4 instead could be select on the base of the option foreseen from the plan of the station The DTVPHC4 could be commanded through telemetry or from the operator in the first case must be set in Remote in the second case in Local When the system works to regime and regularly then the following indications are switched on e OnDTVPHC4 are been switched on the two green LEDs with ON label When the apparatus is adjusted up to GKW RF output it could be alight the yellow LED with indication Over too The yellow LED with Local indication it could be alight or not alight according to the set planned from the operator e Oneach amplifier are been switched on the two green LEDs with ON label When the apparatus is adjusted up to KW RF output it could be alight the yellow Rev 1 0 04 11 08 User Manual RR DTVPHC4 LED with indication Fold Back too the function is permitted when the ALC on modulator has enabled also it must be equipped with adaptive precorrector The yellow LED with Local indication it must be not alight it is previewed of norm that the amplifiers apparatuses are always set in Remote 5 2 2 General norms of functioning with amplifiers The normal functioning of the DTVPHC4 system with amplifiers foresees that the fou
30. lected power Switch the exciter on at its minimum power level and wait for it to lock on the working frequency When the PLL has locked progressively increase its output power while controlling the displays of the exciter of the amplifiers and of the geizel coupler Keep increasing the exciter output overall output of the combiner reaches the desired value that is at most the nominal power rating of the transmitting station At this point it is possible for the user to verify all the working parameters of the amplifier using the management software Normally the device doesn t require any human supervision for its normal operation If any alarm condition arise these are automatically managed by the embedded protection system and notified to the user with the LEDs on the panel or via messages on the LCD display 5 2 1 General behavior with amplifier The DTVPHC4 includes electronic circuits that adjust the complete system of connected amplifiers that allows to obtain the following performances e Service partial operation when any connected amplifiers are out of service also e Service partial operation when only the main power phase remains active on which are connects the monophase devices also User Manual Rev 1 0 04 11 08 7134 DTVPHC4 RYB 8 34 e Service total interruption when the system conditions are incompatible with the functioning The commands that control the system DTVPHC4 with amplifiers are
31. malizations and measures on the various parameters that the machine holds under control The CPU card can be interfaced to external dispositive through a dedicated telemetry connector RS232 serial port and one IIC port The analogic signals provided from the geizel coupler are available on a DB25 connector Rev 1 0 04 11 08 User Manual n R DTVPHC4 9 1 8 9 2 LEDs Card On this card are present four signalling LED that indicates the general state of machine s operation Is present also a trimmer for the power regulation A G C use a small screwdriver in order to modify the distributed power Phase Regulation between the several Amplifiers The geizel coupler is factory adjusted so that the transmitter it is included in will work satisfyingly works over the whole FM band Cases may happen that it is necessary to perform the RF adjustment of the DTVPHC4 for example if the RF interconnection cables with the amplifiers have been sustituted with other of slightly different characteristics or length or if it is desirable to optimize the transmitter s performances on a certain frequency Warning we suggest not to perform the operations described in this chapter to personnel lacking proper instrumentation and deep knowledge of the device and its working principles User Manual Rev 1 0 04 11 08 33 34 DTVPHC4 RYB 10 LS 10 1 34 34 Maintenance Procedures This section provides general maint
32. meter is not available for such reasons it s substituted with the symbol At power on the LCD display will show the following presentation screen indicating the name of the device and informations regards the actual release software SW and hardware HWW HCS 14 1 SW 2 84 Al 1 61 After a few seconds the main screen will be displayed reporting the values od Forward power and Reflected power Fwd Pur 5 61 El Efl Pwr 16 W The management software will remain indefinitely in this default screen until the user pushes the ESC button Pushing the ESC button the user will be presented with the menu selection screen from which the other screens can be accessed Fnac Pure F A Set Alm Mix Ure Rev 1 0 04 11 08 User Manual RR DTVPHC4 Pushing again the ESC button the software goes back to the default screen To enter into one of the submenus just select the corresponding name that will be indicated by a flashing underscore with the LEFT and RIGHT buttons and then push ENTER 5 3 1 Function menu Fnc On Of f From this menu the user can switch ON and OFF the geizel coupler The result of this command is that when the DTVPHC4 is put in OFF mode the inner conductor of the Alarm connector is shorted to ground so that the exciter is put in stand by mode this will happen only if provided with an interlock connector and if correctly connected with the geizel coupler At the same
33. nside the DTVPHC4 are inclusive e Nr 1 4 way RF splitter e Nr 1 4 way RF combiner e Service electronic circuits that control the entire system composed of DTVPHC4 with Nr 4 amplifiers connected for example DT VPA e Connection cables for the RF input signals of each amplifier e Connection cables for the RF output signals of each amplifier e Connection cables for the signals that exchange the DTVPHC4 combiner and the amplifier In the case the cable is not in good conditions or doesn t come connected the combined system is not able to manage the various parameters interconnected correctly This condition involves a high probability to create permanent damages to the load of DTVPHC4 If it is necessary check the integrity and the value of the fuse inside the voltage changer block the required fuse type is e Aux Fuse 10A e Mains fuse 10A Connect the RF output cable of the exciter to the N type input of the splitting section of the combiner Connect five cables between the output N connectors of the splitting section of the combiner and the RF input of five suitable amplifiers Connect five cables between the RF output of the amplifiers and the input connectors of the combining section of the coupler Connect the RF output cable of the exciter to the input connector N type of the splitter section of the combiner Connect each of the five outputs N type of the splitter section with the RF input of the relative power amplifier
34. ny unbalanced powers in case of faulty or performance differences of some amplifier to prevent excessive power driving on the well functioning well loaded outputs Phase Regulation Card Questa scheda montata sul lato anteriore della macchina Sulla scheda sono presenti cinque coppie di capacit variabili che servono per compensare le fasi delle cinque uscite provenienti dal circuito divisore che vengono utilizzate per pilotare gli amplificatori Power combiner Card The function of the coupler section is to add the RF power portions provided by the amplifiers and to pass it through the antenna output The 5 way combiner circuit is designed with strip lines technollogies and 50 Ohm coaxial cables The strip line circuits are completely shielded inside the combiner cover Unbalanced Power Measurement Card Every way of the combiner is connected to its own circuit of unbalanced power measurement card mounted on the dissipator The power resistances are connected to these measure circuits that serve in order to absorb unbalanced power in case of performances differences between the amplifiers of the system CPU This subsystem is composed of three cards the true card CPU the analogic section CARD and the card of interconnection and filtering EMI The CPU implements all the software functions previously described measurements protections controls data visualizations communications The analogic circuitry carries out the nor
35. oon 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 User Manual 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 0 04 11 08 3 34 DTVPHC4 R Y R 4 General Description The DTVPHC4 produced by R V R Elettronica is a geizel coupler at 4 way that allows to join up to 4 R F power amplifier Its function is to split the RF signal coming from a RF exciter ad
36. or would have handle points where is present RF energy that does not come interrupted from protection circuits In theory the values of RF power in these points are low but for effect of the maladjustment of RF impedance that the handling could cause the power in the connectors could go up until to very dangerous values These operations therefore are to AVOID ABSOLUTELY User Manual Rev 1 0 04 11 08 15 34 DTVPHC4 R Y R 5 3 Software 16 34 This chapter describes the way the microprocessor system controls the geizel coupler and how the user can interact with it Note that the user can give commands to the device only when it s set in LOCAL mode using the switch on the front panel Otherwise the user will only be allowed to read the parameters but not to change any of them The management of the DTVPHC4 is performed by a generic software used in different classes of equipment produced by R V R Elettronica SpA like the HC combiners or the RF amplifiers PJSOOM C and PJ1000M For this reason some options that are related to other kinds of devices are deactivated in the software version that is installed in the DTVPHC4 see for example the P A menu Note that some of the parameters that are measured and can be read may be in some circumstances not available This situation mostly arises when for physical reasons the measured values are not significant to be used in the control software When the value for a para
37. ost of RF Power is sent to Antenna and that only a fraction of RF Power is wasted on Absorbers Resistors contained inside DTVPHC4 When everything is properly functioning some operating parameters meets these specifications a The reading of RF Power Output on DIVPHC4 is equal to the algebraic sum of RF Power Output of all amplifiers minus one share of Insertion Loss of the whole system combined evaluated around 7 b The reading of RF Power Rejected it reads on DTIVPHC4 assume a low value It is considered good a level of less than 3 of RF Power Output Phase level alignment procedure of signals related to RF Power Input amplifiers In afirst stage the group of Splitter and Phase Shifter circuits on DIVPHC4 comes adjusted instrumentally through a Vectorial Network Analyzer The adjustment comes made to achieve a RF level on each RF output that is the same in Level and Phase for all WARNING the adjustments must be made using only an Insulated Plastic Trimmer Screwdriver Capacitors on the splitter circuit 1 Identificare i trimmer capacitivi nel pannello frontale del DTVPHC4 Identify the Capacitive trimmer in the frontal panel of the DTVPHC4 2 Regulate all the variable capacitor in a middle position in this way e Turn all the compensators in clockwise sense until to the end e Turn all the compensators in counterclockwise sense for 3 turn completely 3 Switch on the transmitter with the exciter set up on the opera
38. r amplifiers apparatuses are working with equal output powers and electrical phase of their signals equalized to the input of the combiner Each amplifier disposes of power regulation practicable through a trimmer present on the frontal panel of the RF section This regulation must be set for the maximum of the amplifier power adjusting the trimmer completely in clockwise sense The total power obtained for effect of the regulator that it is present on the DTVPHC4 trimmer labelled Power Adjust this is valid only for modulator with adaptive precorrector The system is able to distributing a power up to GKW RF guaranteed in output but it has been projected in a such way for work to lower power with an acceptable electrical efficiency Each power of output programmed requires a different excitation power 5 2 3 Regulation of the identical operation for all equipments The electrical phase regulation of the signals of the combined amplifiers allows to obtain a heavy reduction of the RF power wasted on the absorbers resistors This operation gives the best results if it comes effected when the apparatuses are been adjusted to the regime power programmed from the regulator located on the frontal panel of the DTVPHC4 Power Adjust The electrical phase of the amplifiers comes optimized in the working frequency programmed for the transmitter 5 2 4 Adjustment of signals going to the inputs of various amplifiers Introduction Inside DTVPHC4
39. r menu P A This multi line scrollable menu reports to the user some internal measurement of the device e Voltage VPA Not active e Current IPA Not active e Efficiency Not active e Temperature e Mains voltage Mains percentage variation with respect to the nominal voltage The complete aspect of the screen is the following figure please note that only two lines at a time are visible use the UP and DOWN buttons to scroll La seguente figura mostra l aspetto completo di questa schermata sono visibili sul display solo due righe alla volta utilizzare i pulsanti SU e GIU per scorrerla LPA IFA Ett Teme Hains Please note that the first three lines of this screen are not active since they are not meaningful for a geizel coupler Threshold setting menu Set As described in the introduction the amplifier offers a maximum of three user settable alarms For each of them one of the working parameters is compared against a threshold value that can be be modified by the user The results of the comparisons are available on the telemetry connector or as dry contacts on the optional external Rev 1 0 04 11 08 User Manual RR DTVPHC4 telemetry board and can be read on the display as O open i e the result is false or C closed i e the result is true Two of the settable thresholds are related to the RF emitted power Power Good while the third is connected to the amount of reflected power
40. s of the combiner DTVPHC4 03KUV Maximum power input 50W Maximum output forward power 6kW Maximum output reflected power 1 5kW Maximum RF power 1 65kW Maximum rejected power 1 5kW RF ouput power in the case of 1 amplifier switched off and 3 amplifiers to 800 W 1kW In other cases the output power is not garanteed lower than 15 respect to total power Temperature on the cooling device of the absorber resistors 80 C User Manual Rev 1 0 04 11 08 27 34 DTVPHC4 RaW R 8 Electrical description DTVPHC4 is composed of different modules wired between them with connectors allowing for easy servicing or module substitution RF output RF input to Amp 1 from exciter RF output i outpu RF Splitter E Telemetry RS232 IIC Interlock Display Keys RF input from Amp 1 RF input RF Combiner from Amp 4 RF output to antenna This chapter give the necessary indications to identify the modules and to understand their functionalities 28 34 Rev 1 0 04 11 08 User Manual n v R DTVPHC4 8 1 Modules Identificarion upper view Figure below shows
41. ting frequency and to regime power 4 Onthe coupler set up the display on the reading of Rej Pwr 6 Regulate the variable capacitors 1 and 2 related to the first amplifier so as to diminish Rej Pwr measured from the coupler Rev 1 0 04 11 08 User Manual RR DTVPHC4 1 2 3 4 5 6 7 8 9 7 Regulate the variable capacitors 3 and 4 related to the second amplifier so as to diminish Rej Pwr measured from the coupler 8 Regulate the variable capacitors 5 and 6 related to the third amplifier so as to diminish Rej Pwr measured from the coupler 9 Regulate the variable capacitors 7 and 8 related to the fourth amplifier so as to diminish Rej Pwr measured from the coupler 10 Repeat the points from 6 to 9 until that the system power catches up a value that cannot be diminished further C NOTE e Capacitors 9 and 10 are not used in DTVPHC4 e The described procedure is adapted to the case tou want optimize the coupler for a certain operating frequencies When you may adjusted must itself be regulated the coupler for the operation on whole band FM carried out the regulations before described to the frequency of 98 0 MHz then repeated at 87 5 MHz and 108 0 MHz until to finding the point of better compromise If the compensation comes made because an amplifier is been replaced it is generally necessary only to operate on the capacitors relative to the replaced amplifier
42. ys for the interaction with the user that realizes the following functions e Measurement and visualization of the coupler s working parameters e Activation and deactivation of the power output of the system e Protection of the coupler with respect to potentially dangerous situations like exceeding emitted or unbalancement power overdrive or overtemperature e Detection of user settable attention thresholds e g output power being below a certain value that are made externally available as digital states on the telemetry connector 4 34 Rev 1 0 04 11 08 User Manual RR DTVPHC4 e Communications with external devices The management software of the DTVPHC4 is based on a menu system The user can navigate through the menu system using four buttons ESC move LEFT UP move RIGHT DOWN and ENTER Afifth button is used to reset the alarm counters if any alarm has been triggered before The state of the machine comes indicated from nine LEDs present on the frontal panel A switch on the front panel allows to select the LOCAL or REMOTE working mode e LOCAL mode allows to control the machine using the buttons on the front panel while remote control that is using the telemetry connector is disabled In REMOTE mode remote control is enabled while the buttons on the front panel can be used only to read parameters and not to change them The LOCAL working mode is signalled by a yellow LED on the front panel being lit Th
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