Elettronika S r l TXUP200 250 Watt Analog TV Broadcast Transmitter User Manual APT134A AUTV 250LD Rev0 Date061103 pmd

Elettronika S.r.l. 250 Watt Analog TV Broadcast Transmitter APT134A AUTV 250LD Rev0 Date061103 pmd

User Manual

AUTV/250LDLDMOS - UHF TV Solid State AmplifierCODE APT134A TITLE AUTV/250LD REV 0DATE 06/11/03
SS 96 Km 11370027 Palo del Colle (Ba) ITALYTel. +39 (0)80 626755Fax +39 (0)80 629262E-mail: elettronika@elettronika.itWeb site: http://www.elettronika.itRegistration number: IT-17686Registration number: IT-24436
3WARNINGThe apparatus described in this manual has been designed and manufactured with devices to safe-guard the users. In any case it is recommended that during any operation of installation, maintenance,miscellaneous interventions and calibrations requiring the apparatus to be switched on,THE USER TAKES ALL THEPRECAUTIONS AGAINST INCIDENTSIt is required to use the proper clothes and protection gloves in order to prevent damages from inci-dental contacts with high-voltage parts.The manufacturer declines every responsibility in case the recommendations above are not followed.IMPORTANTThe component lists attached to the relevant electrical diagrams indicate for each item the reference,the description and the type normally used.The Elettronika S.r.l. though reserves the right to use or supply as spare parts components withequivalent characteristics but of a different type, assuring anyway the optimal work of the apparatusin accordance with the specifications.The enclosed monographs are solely owned by Elettronika S.r.l.The use of anything enclosed in this technical manual without explicit authorization given by ElettronikaS.r.l. will be prosecuted by the law.The data and technical characteristics of the apparatus described in this manual are not compelling forthe manufacturer.The Elettronika S.r.l. reserves the right to make, without previous notice, modifications or updates inorder to improve the quality of the product.The general conditions of supply and sale are described in the contracts.The delivery time are in accordance with the products and quantities ordered.
4Summary of warrantyWe, ELETTRONIKA S.r.l., SS096 Km 113 Z.I. PALO DEL COLLE (BA) ITALY, warrant to the ORIGINAL PURCHASER of a NEW product, for aperiod of one (1) year from the date of purchase by the original purchaser (the “warranty period”) that the new ELETTRONIKA product is free of defectsin materials and workmanship and will meet or exceed all advertised specifications for such a product. This warranty does not extend to any subsequentpurchaser or user, and automatically terminates upon sale or other disposition of our product.Items excluded from this ELETTRONIKA warrantyWe are not responsible for product failure caused by misuse, accident, or neglect. This warranty does not extend to any product on which the serialnumber has been defaced, altered, or removed. It does not cover damage to loads or any other products or accessories resulting from ELETTRONIKAproduct failure. It does not cover defects or damage caused by use of unauthorized modificstions, accessories, parts, or service.What we will doWe will remedy any defect, in material or workmanship (except as excluded), in our sole discretion, by repair, replacement, or refund. If a refund iselected, then you must make the defective or malfunctioning component available to us free and clear of all liens or other encumbrances. The refund willbe equal to the actual purchase price, not including interest, insurance, closing costs, and other finance charges less a reasonable depreciation on theproduct from the date of original purchase. Warranty work can only be performed at our authorized service centers or at our factory. Expenses inremedying the defect will be borne by ELETTRONIKA, including one-way surface freight shipping costs within the United States. (Purchaser must bearthe expense of shipping the product between any foreign country and the port of entry in the United States and all taxes, duties, and other custom’s fee(s)for such foreign shipments).How to obtain warranty serviceYou must notify us of your need for warranty service not later than ninety (90) days after the expiration of the warranty period. We will give you anauthorization to return the product for service. All components must be shipped in a factory pack or equivalent which, if needed, mayDesclaimer of consequential and incidental damagesYou are not entitled to recover from us any consequential or incidental damages resulting from any defect in our product. This includes any damageto another product or products resulting from such a defect.Warranty alterationsNo person has the authority to enlarge, or modify this warranty. The warranty is not extended by the lenght of time for which you are deprived ofthe use of the product. Repairs and replacement parts are provided under the terms of this warranty shall carry only the unexpired portion of thiswarranty.Design changesWe reserve the right to change the design of any product from time to time without notice and with no obligation to make corresponding changes inproducts previously manufactured.Legal remedies of purchaserThere is no warranty which extends beyond the terms hereof. This written warranty is given in lieu of any oral or implied warranties not containedherein. We disclaim all implied warranties, including without limitation any warranties of merchantability or fitness for a particular purpose. No actionto enforce this warranty shall be commenced later than ninety (90) days after expiration of the warranty period.Warranty for electronic tubesThe warranty applied for electronic tubes is the one given by the manufacturer of the tube. In the event that the product shows anomalies within thedeadline of the validity of the warranty given by the manufacturer of the product itself, the buyer will have to return it to the seller with the neededdocuments and the written description of the defect. The seller will ship the broken tube to the manufacturer in order to effect the necessary technicaltests to find out the cause of the anomaly. Meanwhile the buyer of the tube who needs to use, and as such to replace immediately the product, will haveto buy a new one and provide to the relevant payment, further to the issuing by the seller of a regular commercial invoice. After the adequate tests madeby the manufacturer, should the result be positive, that is confirm the defect in manufacturing, the seller will issue a regular credit note in the name ofthe buyer and return the amount paid. Should the result be negative, that is detect a negligence in the installation or use by the buyer, he will have noright against the seller.Warranty
5INTRODUCTIONThe apparatus described in this manual is the latest of this series, offering high performances, remark-able reliability and a wide range of characteristics, it all at a competitive cost.Its is easy to install and use. It only takes to follow the installation procedure as shown in this manual:after having removed all from the package, you only have to follow step by step the description in thevarious sections.Before starting to use the apparatus, remember to:read carefully the general safety information contained in this section;follow the instructions for the installation and set up of the apparatus;read all the remaining sections of this manual in order to know well the apparatus and learnhow to obtain the best of its characteristics.CONTENTS OF THE MANUALThe chapter composing this manual contain all the information concerning the use of the apparatus.For more information refer to ELETTRONIKA S.r.l.This manual is made up of different chapters, each made up of various sections.
6WARNING!The currents and voltages in this equipment are dangerous!Personnel must at all times observe safety regulation!This manual is intended as a general guide for trained and qualified personnel who are aware of thedangers inherent in handling potentially hazaedous electrical and electronic circuits.It is not intended to contain a complete statement of all safety precautions which should be observed bypersonnel in using this or other electronic equipment.The installation, operation, maintenance and service of this equipment involves risks both to personneland equipment, and must be performed only by qualified personnel exercising due care.Elettronika S.r.l. shall not be responsible for injury or damage resulting from improper procedures orfrom the use of improperly trained or inexperienced personnel performing such tasks.During installation and operation of this equipment, local building codes and fire protection standardsmust be observed.WARNING!Always disconnect power before opening covers,doors, enclosures, gates, panels or shields.Always use grounding nsticks and short out highvoltage points before servicing. Never makeinternal adjustments, perform maintenance orservice when alone or when fatigued.Do not remove, short-circuit or tamper with interlock switches on access covers, doors, enclosures,gates, panels or shields.Keep away from live circuits, know your equipment and don’t take chances.WARNING!In case of emergency ensure that power has been disconnected.
7A - AIRWAYIf unconscious, open airway lift up neck, pushforehead back, clear out mouth if necessary,observe for breathing.Treatment of electrical shock1) If victim is not responsive follow the A, B, C’s of basic life support.PLACE VICTIM FLAT ON HIS BACK ON A HARD SURFACEB - BREATHINGIf not breathing, begin artificial breathing. Tilthead, pinch nostrils, make airttght seal, 4 quickfull breaths. Remember mouth to mouth resuscita-tion must be commenced as soon as possible.C - CIRCULATIONCheck carotid pulse. If pulseabsent, begin artificial circulation.Approx. 80sec.: 1 rescuer, 15 compressions, 2 quick breaths.Approx. 60sec.: 2 rescuers, 5 compressions, 1 breath.NOTE: DO NOT INTERRUPT RHYTHMOF COMPRESSIONS WHEN SECOND PERSONIS GIVING BREATH.Call for medical assistance as soon as possible.
82) If victim is responsive:- keep them warm;- keep them as quiet as possible;- loosen their clothing (a reclining position is recommended).FIRST-AIDPersonnel engaged in the installation, operation, maintenance or servicing of this equipment are urgedto become familiar with first-aid theory and practices. The following information is not intended to bea complete first-aid procedure, it is brief and is only to be used as a reference. It is the duty of allpersonnel using the equipment to be prepared to give adequate Emergency First Aid and thereby pre-vent avoidable loss of life.TREATMENT OF ELECTRICAL BURNS1) Extensive burned and broken skin.- Cover area with clean sheet or cloth (cleansed available cloth article);- do not break blisters, remove tissure, remove adhered particles of clothing, or apply any salve orointment;- treat victim for shock as required;- arrange transportation to a hospital as quickly as possible;- if arms or legs are effected keep them elevated.NOTEIf medical help will not be available within an hour and the victim is conscious and not vomiting, givehim a weak solution of salt and soda: 1 level teaspoonful of salt and 1/2 level teaspoonful of bakingsoda 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).2) Less severe burns - (1st & 2nd degree).- 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 qickly as possible;- if arms or legs are affected keep them elevated.
9Further to the directives issued by the European Community, 2002/95/CE, 2002/95/CE and 2003/108/CE, and to the Italian Decree of Law n° 151 dated 25 July 2005, this is to inform the customers of ElettronikaS.r.l. living within the boundaries of the European Community about the following obligations:1) It is forbidden to trash RAEE products (which includes all broadcasting products which are not expresslylabelled as lead-free) along with normal wastes;2) Such devices must be brought to proper centres able to perform the adequate processing in order torecycle their parts where possible and dispose of the raw materials contained therein;3) For equipment purchased from Elettronika after the 13th of August 2005, the gathering, transport, processing,recycle and disposal operations are responsibility of Elettronika who will bear all related expenses;4) For equipment purchased from Elettronika before the 13th of August 2005 , the gathering, transport,processing, recycle and disposal operations are responsibility of Elettronika, who will bear all related expenses,only if you are purchasing from us new equipment in substitution of the disposed one;5) Electric and electronic devices contains lead in soldering, cables, etc. This substance pollutes the environmentand may be accumulated in the organism of plants and mammals. It is dangerous for humans because it mayaffect blood, bone marrow, peripheral and central nervous system and kidneys, causing anaemia,encephalopathies (e.g., convulsions), peripheral neuropathies, cramps of the abdomen and kidney damages.Besides it affects human reproduction and growth.These devices also contain mercury. From the environmental point of view, this substance is highly toxic foraquatic life, and can be accumulated in the organism of fish.Long-term damages to humans can affect the central nervous system and the kidneys, producing irritability,emotional instability, tremors, damages to the mind and the memory, language disorders. It may also irritateand whiten the gums, and its effects may be cumulative. Based on tests on animals, it may affect the humanreproduction or growth.There is also chrome, which may result in irritation of the eyes and respiration system.Cadmium is also present. In humans it may damage lungs, due to repeated or prolonged contact with its dust,and kidneys. It may cause cancer.6) The symbol below marks the devices which cannot be disposed of along with normal wastes, as stated in1) and 2) above.7) The payment of fees is foreseen for the non-allowed disposal of such devices.Communication N°1 -2002/95/CE - RoHS Directive
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11LDMOS - UHF TV AMPLIFIERAUTV/250LDUser’s manual
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13Section 1 - InformationContents:1.1 Description1.2 Technical characteristics
14AUTV/250LDLDMOS - UHF TV AMPLIFIER1.1 DESCRIPTIONThe amplifier AUTV/250LD is an apparatus designed to be used as final power stage or driver for higher-power amplifiers in the UHF TV band.It is able to supply a power of 250W (peak sync.) in class AB and is completely realized with LDMOStechnology. The power supply of the apparatus is given by a switching power supply for the RF powermodule and a traditional transformer for the control board. The protection board uses all the potential of amicroprocessor to check all the parameters of the amplifier module and the voltage of the power supply.An output band-pass filter provides for the attenuation of the spurious products. The final result is a compactapparatus, it is all inside a standard 19”-4U cabinet, with a very good price-to-quality ratio.
151.2 TECHNICAL CHARACTERISTICSRF SECTIONFrequency range 470 - 860MHzOutput power 250WGain 13dB +/-1RF Input impedance 50ΩRF Output impedance 50ΩI.M.D. (3 Tones: -8, -10, -16dB) < -54dB (with IF Pre-corrector)RF Spurious products Better than -60dBFilter insertion loss < = 0,6dBRF Input connector N FemaleRF Output connector N FemaleGENERALPower Supply 90-260VACTypical power consumption 600VA (Black)RS232 Socket DB9 ConnectorTelemeasuring socket DB9 ConnectorCabinet Rack 19”-4UDimensions 421x368x178mmWeight 25kgAmbient temperature -5° to +45°CHumidity 20% - 90%PROTECTION THR.FWD Power 300WREF Power 20WTemperature 70°CIDC 14AVDC Min 5V - Max 34V
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17Section 2 - InstallationContents:2.1 Operating environment2.2 Preliminary operations2.3 Telemeasuring socket connections2.4 RS232 / RS485 Socket connections2.5 Control system2.6 Preventive maintenance- Front panel- Rear panel
182.1 OPERATING ENVIRONMENTYou can install the apparatus in a standard component rack or on a suitable surface such as a bench ordesk. In any case, the area should be as clean and well-ventilated as possible. Always allow for at least2 cm of clearance under the unit for ventilation. If you set the apparatus on a flat surface, install spacerson the bottom cover plate. If you install the apparatus in a rack, provide adequate clearance above andbelow. Do not locate the apparatus directly above a hot piece of equipment.2.2 PRELIMINARY OPERATIONSCorrect installation of the equipment is important for maximum performance and reliability. Antennaand earth connections must be installed with the greatest care. The equipment adjustment isn’t need,because the unit is completely adjusted by our technical staff. This is the installation procedure:1. connect the power supply cable of the transmitter to the auxiliary socket on the rear panel of theamplifier;2. connect the power supply cable of the amplifier to the electric network (90-260VAC);3. connect the exciter / antenna cable to the RF IN and RF OUT on the rear panel of the amplifier.WARNING!!!FOR ELECTRICAL SAFETY REASONS AND IN ORDER TO KEEP THE APPARATUS SAFE,THE GROUND TERMINAL OF THE APPARATUS MUST BE CONNECTED TO THE EX-ISTING GROUNDING SYSTEM AND NOT BY USING THE SHIELD OF THE OUTPUTCOAXIAL CABLE.132RF INRF IN
19Before powering fully the apparatus, check that the output connections of the coaxial cable to the antennasystem are working.In order to this it is possible to check the indication of the reflected power at low power levels. Only ifthe SWR indication on the display is 0, the output power can be slowly increased. At maximum outputpower, some watt might be shown as reflected power2.3 TELEMEASURING SOCKET CONNECTIONSDB9 SocketPIN N° SIGNAL TYPE IN / OUT FUNCTION1Ground - -2AnalogOutputFWD Power0 to 5V3 Digital Input Floating: ON - GND: OFFValid only in remote (Pin 6= GND)4 Digital Output 0: Alarm - 1: No alarmTTL Level5 - - Not used6 Digital Input Floating: LocalGND: Remote (Pin 3 Command accepted)7AnalogOutputREF Power0 to 5V8AnalogOutputTe mpe r at ur e0 to 5V9 - - Not used2.4 RS232 / RS485 SOCKET CONNECTIONSThe DB9 connector can be used in two modes (RS232 or RS485) depending on the position of the Dip-Switch.PIN N° 123456789RS232 -RXTX+5VGND+5V---RS485 - RX- RX+ +5V GND +5V TX- TX+ -SW1 12 34 5 6 78RS232 Open Open Open Open Closed Closed Closed -RS485 Closed Closed Closed Closed Open Open Open -
202.5 CONTROL SYSTEMThe control system allows the user to monitor the most important measures of the transmitter, voltageand current of the power supply, temperature of the RF board, forward and reflected power, by usingthe two keys placed on the frontal panel. The turn-on key allows to turn on and off the transmitter.In case one of the monitored measures is in alarm, the transmitter will show this. If the value of themeasure goes back to normal, the control system will turn on the transmitter again.After 5 cycles of turning on and off the transmitter will be kept switched off until the user turns it off.Meaning of the LEDs- LED ON: The LED ON is lit when the turn-on command of the transmitter is inserted.- LED REMOTE: the LED REMOTE is lit when the remote commands have been enabled by the telemeasuring connector or when the transmitter is controlled trough the RS232 port.- LED ALARM: the LED ALARM is lit when the transmitter has been turned off due to a failure.2.6 PREVENTIVE MAINTENANCETo ensure maximum performance and minimum repair trouble, we strongly recommend you to followthe below stated headlines for preventive maintenance:1. check antenna installation and ground connection at regular intervals;2. keep your apparatus clean and dry externally: this will ensure continuous functioning of the frontpanel controls;3. if the apparatus has not been used for a long period of time combined with exposure to extremeenvironmental conditions, open the unit and make a visual inspection.Remove salt, water or ice with a moist cloth before turning the apparatus on. Check that the cooling fansare running freely.4. for general maintenance and top performance, call an authorized service technical to give the appara-tus and the complete antenna/earth connection installation a general check each 12-18 months;5. check at regular intervals that the air intake located on the front panel is free of dust. If there is visibledust, remove it by means of a soft brush.
21Front panel23451DESCRIPTION1LCD Display2 RF Monitor connector3 Function keys4 Status LEDs5 Main switch
22GND1546732DESCRIPTION1 Power supply socket2 Auxiliary socket3 Breaker4 RS232 Socket5 Telemeasuring socket6 RF Output connector7 RF Input connectorRear panel
23_______________________________________________________________________________________________Section 3 - DiagramContents:- Cable diagram- AUTV/250LD Component layout- RF Section Block Diagram- SCH0192AR0 (250W UHF LDMOS Amplifier module)- SCH0122BR1 (Control board and display)- SCH0128AR1 (Amplifier interface)- E0012 (SP500/27-48 Switching power supply)- 06604A (UHF TV Output Filter IMD Suppressor)
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27200W UHF LDMOS AMPLIFIER MODULE SCH0192AR0DESCRIPTIONThe RF module is an integrated TV linear amplifier designed for UHF band, this module employs push-pullLDMOS technology in order to achieve very good efficiency, high linearity and reliability.LDMOS transistors operate in AB class. It is a wideband amplifier over the full frequency, no adjustment isrequired for the channel change. The board includes RF section amplifier, bias circuit, protection circuit andmatching networks. A silver plated copper plate is brazed with PCB in order to obtain low thermal resistance.Providing a minimum of 200W Pk sync linear power, this module is the perfect amplifier for any broadbandUHF power transmitter.TECHNICAL CHARACTERISTICSOutput power 300W maxInput power 15W maxFrequency 470 - 860MHzGain > 13dBLDMOS Power supply 32V ±2%LDMOS Bias current @+32V Vdc 2ARF Input impedance 50ΩRF Output impedance 50ΩInput / Output return loss > = 15dBDrain efficiency 47% @ 250WStorage temperature range -50° to +150°CDimensions (LxWxH) 165x95x29mm
28CALIBRATION PROCEDURE- Technical characteristicsPower supply voltage 32V (± 2%)Polarisation current 1.0 cold for each device (2A total), ± 0.1AGain for low signal Not less than 13dB in the 470-860MHz band (± 1dB)Compare to the typical curve eclosed- Adjustment procedurePolarisation current calibration 32V stabilised power supply10A amperometerGain curve Network analyser- Adjustment points descriptionR7-R8 (Trimmers) Adjust the current absorbed in stand-by (1.0A per device)Middle frequency 660MHz, span 500MHz, 2dB/div., reference to the arrow- Curve response graphic
29- Calibration stepsSTEP 1. Close the input and the output of the module by connecting them to a 50ΩΩΩΩΩ dummy loadand connect the spectrum analyser through a directive sample, in order to look for self-oscillation of themodule, if any (anyway the module has been designed so that it would not self-oscillate even if totally de-coupled, without any input or output load).STEP 2. Check the voltages of the polarisation circuits without assembling the transistors first:connect the 32V power supply to the proper turret by means of a fastening screw, then give power and checkdata:- the stabilised voltage on the zener diodes DZ1 and DZ2 is about 15V compared to the ground;- the stabilised voltage on the zener diodes DZ3 and DZ4 is about 6.8V compared to the ground;- the voltage on the pads to which the gates of the LDMOS transistors will be soldered (R23 and R24resistors side) changes from 0V to a maximum value of about 6V when moving the relevant trimmer (R7-R8).STEP 3. Check the work of the protections.- Set both trimmers so that there is a value of about 4.5V on the pads of the gates;- solder some wire to the pad between the two LEDs, next to the serigraphy of the input hybrid H1;- in order to check the work of the protections aboard, a power of about 4V has to be supplied to the wire,for example by touching with it the reophore of C23 or C24 which is not connected to ground; the two redLEDs will immediately light up and the two RF transistors will be switched off at the same time: the polarisationcurrent (2A) will decrease to 0 and of course the gain curve displayed by the spectrum analyser will decrease;- after this it is important to restore the position of the two trimmers for the minimum voltage! Thendisconnect the 32V power supply.STEP 4. Fastening of the LDMOS transistors: after properly cleaning the plate surface, smear a thinlayer of silicone fat on the lower side of the flange of the MOSFETs, fasten them to the heat sink and solderthe gate first, then the drain. Solder the two 13pF (ATC) chip capacitors and above them the two 1-5pFSolder a wire
30capacitive trimmers, between the two pair of gates, as shown by the mounting plan.STEP 5. Connect serially a c.c. amperometer to the power supply, with scale starting from more than 5A(i.e. 10A).STEP 6. Power the module and check the MOSFET is not absorbing current; this means that the deviceis integral and working correctly.STEP 7. Slowly turn the R7 trimmer until the MOSFET absorbs 1A, always checking that there are noself-oscillation; under this conditions it is possible to check by means of a digital tester that the voltage on thegate is about 5.2-5.4V.STEP 8. Repeat the previous step for the other section of the module, this time turnign R8 and checkingthat the indication of the current on the amperometer increases to 2A total (which includes the current of theother device left on).STEP 9. Check the response curve of the module by means of the network analyser.STEP 10. Check the response curve for low signal with centre 660MHz and span 500MHz, 2dB/div.STEP 11. The curve should be similar to the one enclosed, with a tolerance of ± 0.5dB. To obtain this, acton the four trimmers C41-C41a and C42-C42a with the proper “calibrator”, inorder to flatten the curve asmuch as possible, especially at the edged of the band which represents the minimum values.STEP 12. Finally, check that the current in stand-by does not increase by more than 15÷20%, reaching atworst 2.3÷2.4A when the heat sink is hot and not ventilated.Note: when mounting-removing the PALLET on the heat sink, tightly fasten the screw of each all “N” input and outputconnectors. These are mounted with a single 3mm screw and if it is not properly fastened it may be detached from the PCBby a movement of the connector once it has already been soldered to the path.
31Component layout SCH0192AR0
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33COMPONENT LIST SCH0192AR0REF. DESCRIPTION ELETTRONIKA CODE Page 1/3R1 2200Ω 1/4W 1206 SMD RESISTOR 00045AR2 2200Ω 1/4W 1206 SMD RESISTOR 00045AR3 2200Ω 1/4W 1206 SMD RESISTOR 00045AR4 2200Ω 1/4W 1206 SMD RESISTOR 00045AR5 1200Ω 1/4W 1206 SMD RESISTOR 00042AR6 1200Ω 1/4W 1206 SMD RESISTOR 00042AR7 50kΩ MULTITURNS PTH TRIMMER 00800R8 50kΩ MULTITURNS PTH TRIMMER 00800R9 1200Ω 1/4W 1206 SMD RESISTOR 00042AR10 1200Ω 1/4W 1206 SMD RESISTOR 00042AR11 18kΩ 1/4W 1206 SMD RESISTOR 00056BR12 18kΩ 1/4W 1206 SMD RESISTOR 00056BR13 680KΩ 1/4W 1206 SMD RESISTOR 00075AR14 0Ω 1/4W 1206 SMD RESISTOR 00001R15 50Ω 30W 1512EBX SMD RESISTOR 00416AR16 50Ω 60W 00432R17 4.7kΩ 1/4W 1206 SMD RESISTOR 00049AR18 4.7kΩ 1/4W 1206 SMD RESISTOR 00049AR19 3.9Ω 1/4W 1206 SMD RESISTOR 00012AR20 3.9Ω 1/4W 1206 SMD RESISTOR 00012AR21 3.9Ω 1/4W 1206 SMD RESISTOR 00012AR22 3.9Ω 1/4W 1206 SMD RESISTOR 00012AR23 1000Ω 1W 2512 SMD RESISTOR 00396R24 1000Ω 1W 2512 SMD RESISTOR 00396*R25 = R15 (da montare se si inverte l’ingresso)*R26 = R26 (da montare se si inverte l’uscita)C1 470uF 50V PTH ELECTROLYTIC CAPACITOR 01807BC2 470uF 50V PTH ELECTROLYTIC CAPACITOR 01807BC3 470uF 50V PTH ELECTROLYTIC CAPACITOR 01807BC4 100uF 50V PTH ELECTROLYTIC CAPACITOR 01795C5 100uF 50V PTH ELECTROLYTIC CAPACITOR 01795C6 1nF ATC 100B CAPACITOR OR EQUIVALENT 01145C7 1nF ATC 100B CAPACITOR OR EQUIVALENT 01145C8 x 2 2 x 100nF ATC CAPACITOR OR EQUIVALENT 01065HC9 x 2 2 x 100nF ATC CAPACITOR OR EQUIVALENT 01065HC10 x 4 4 x 100pF ATC 100B CAPACITOR OR EQUIVALENT 01135C11 x 4 4 x 100pF ATC 100B CAPACITOR OR EQUIVALENT 01135C12 100nF 1210 SMD CAPACITOR 1065GC13 100nF 1210 SMD CAPACITOR 1065GC14 100nF 1210 SMD CAPACITOR 1065GC15 1uF 35V SMD TANTALIUM CAPACITOR 01613AC16 1uF 35V SMD TANTALIUM CAPACITOR 01613AC17 100nF 1210 SMD CAPACITOR 1065G
34REF. DESCRIPTION ELETTRONIKA CODE Page 2/3C18 100nF 1210 SMD CAPACITOR 1065GC19 10uF 16V SMD TANTALIUM CAPACITOR 01626AC20 10uF 16V SMD TANTALIUM CAPACITOR 01626AC21 100nF 1210 SMD CAPACITOR 1065GC22 100nF 1210 SMD CAPACITOR 1065GC23 100nF 1210 SMD CAPACITOR 1065GC24 100nF 1210 SMD CAPACITOR 1065GC25 1nF ATC 100B CAPACITOR OR EQUIVALENT 01145C26 1nF ATC 100B CAPACITOR OR EQUIVALENT 01145C27 1nF ATC 100B CAPACITOR OR EQUIVALENT 01145C28 1nF ATC 100B CAPACITOR OR EQUIVALENT 01145C29 20pF ATC 100B CAPACITOR OR EQUIVALENT 01123C30 20pF ATC 100B CAPACITOR OR EQUIVALENT 01123C31 20pF ATC 100B CAPACITOR OR EQUIVALENT 01123C32 20pF ATC 100B CAPACITOR OR EQUIVALENT 01123C33 1.3pF ATC 100B CAPACITOR OR EQUIVALENT 01104C34 1.3pF ATC 100B CAPACITOR OR EQUIVALENT 01104C35 470pF ATC 100B CAPACITOR OR EQUIVALENT 01143C36 470pF ATC 100B CAPACITOR OR EQUIVALENT 01143C37 470pF ATC 100B CAPACITOR OR EQUIVALENT 01143C38 470pF ATC 100B CAPACITOR OR EQUIVALENT 01143C39 4.7pF ATC 100B CAPACITOR OR EQUIVALENT 01108C40 4.7pF ATC 100B CAPACITOR OR EQUIVALENT 01108C41 x 2 2 x 1÷5pF JOHANSON SMD TRIMMER 1485C42 x 2 2 x 1÷5pF JOHANSON SMD TRIMMER 1485C43 3.6pF ATC 100B CAPACITOR OR EQUIVALENT 01104BC44 3.6pF ATC 100B CAPACITOR OR EQUIVALENT 01104BC45 6.8pF ATC 100B CAPACITOR OR EQUIVALENT 01111C46 6.8pF ATC 100B CAPACITOR OR EQUIVALENT 01111C47 6.8pF ATC 100B CAPACITOR OR EQUIVALENT 01111C48 6.8pF ATC 100B CAPACITOR OR EQUIVALENT 01111C49 13pF ATC 100B CAPACITOR OR EQUIVALENT 01119AC50 13pF ATC 100B CAPACITOR OR EQUIVALENT 01119AC51 8.2pF ATC 100B CAPACITOR OR EQUIVALENT 01113C52 8.2pF ATC 100B CAPACITOR OR EQUIVALENT 01113C53 8.2pF ATC 100B CAPACITOR OR EQUIVALENT 01113C54 8.2pF ATC 100B CAPACITOR OR EQUIVALENT 01113C55 10pF ATC 100B CAPACITOR OR EQUIVALENT 01117C56 10pF ATC 100B CAPACITOR OR EQUIVALENT 01117C57 4.7pF ATC 100B CAPACITOR OR EQUIVALENT 01108C58 4.7pF ATC 100B CAPACITOR OR EQUIVALENT 01108C59 0.3pF ATC 100B CAPACITOR OR EQUIVALENT 01160T1 BLF861A RF LDMOS POWER TRANSISTOR 04034T2 BLF861A RF LDMOS POWER TRANSISTOR 04034B1 COAX 2:1 BALUN 08491
35REF. DESCRIPTION ELETTRONIKA CODE Page 3/3B2 COAX 2:1 BALUN 08491B3 COAX 4:1 BALUN 08492B4 COAX 4:1 BALUN 08492L1 4 TURNS SILV. COP. WIRE 1.2mm WOUND ON OD 5mm 07684L2 4 TURNS SILV. COP. WIRE 1.2mm WOUND ON OD 5mm 07684L3 ½ TURN COILL4 ½ TURN COILH1 HYBRID COUPLER 3dB 90° ANAREN 05368H2 HYBRID COUPLER 3dB 90° SAGE 05369NTC1 NTC 100KΩ PTH 00661NTC2 NTC 100KΩ PTH 00661IC1 DG419DY 04583IC2 DG419DY 04583DZ1 15V SMD ZENER DIODE 03135DZ2 15V SMD ZENER DIODE 03135DZ3 6.8V SMD ZENER DIODE 03137DZ4 6.8V SMD ZENER DIODE 03137DL1 SMD LED DIODE - RED - 03056DL2 SMD LED DIODE - RED - 03056PN964AR3 PCB 0643KTorretta 3x10 f/f V0774Imballo velapack 200x125x50 09983
36CONTROL BOARD AND DISPLAY SCH0122BR1DESCRIPTIONThe control board performs all the logic and control fucntions of the amplifier. Both the RF and power supplyparameters are continuously monitored in order to guarantee optimal performance in every working environment:- amplifier supply voltages Vdc;- amplifier supply currents Idc;- power module working temperature Temperature;- amplifier forward RF power FWD Power.- amplifier reflected RF power REF Power.The board is based on a flash microcontroller working at a frequency of 20MHz, able to read the parameters,control the amplifier and communicate with any PC connected through RS232/RS485 line. Besides, themicrocontroller is programmable, thus it is possible to change the internal program by connecting the appropriateprogrammer to the J3 connector and this to a computer. The boards contains a 16 characters x 2 lines displayand two keys to change the parameter currently shown. There are also 3 different LEDs. The green LEDindicates when the amplifier module is ON, the red one is lit when an alarm in occur and the yellow oneindicates the remote control of the amplifier.OPERATING CONTROLAs indicated in the previous section, the boards is able to read in real time all the necessary parameters tocontrol the amplifier. When the operator turns the amplifier on the display shows the software release number.After a few seconds the amplifier is switched on and the first parameter shown on the display is the forwardRF power (“FWD Power”).When a value read is out of the allowed boundaries, the microcontroller activates (after five scans to besure) the corresponding alarm indicating this on the first line of the display, and showing on the second line thephysical value. When the alarm is active, the microcontroller switches the amplifier off and restarts the timecounter (3 and 6 seconds). The microcontroller internally stores the number of occurred alarms and if itreaches 5 the whole equipment is definitively switched off. In this case, if the operator needs to restart themachine, it is necessary to switch it off and on again (locally o by remote). When the machine is workingnormally on the first line shows “TV AMPLIFIER UHF” and the second line shows the parameter with theformat “parameter = xx.x unit”. The two keys on the frontal panel allow to change the currently shownparameter: the left one goes to the next parameter and the right one goes back (in sequence Vdc, Vac,Temperature, Idc, FWD, REF). If the amplifier is switched off, the “STAND BY” indication is shown on thedisplay and the backlight is turned off.The amplifier can be remotely controlled by serial line (contact ELETTRONIKA for details). It isconfigurable as RS232 or RS485.
37Note: When changing the voltage of the device from 230 to 110VAC, it also takes acting onthe SW3 switch on the display board. Failure to do this may result in damages to the device.
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40COMPONENT LIST SCH0122BR1Part Name/Number Description Qty. Comps. Page 1/2CC 100nF-S 01065C 01065C Y5V 1206 COND 23 C1-2, C8, C11, C14, C21,C22, C24-32, C34, C40,C42, C44, C47, C49-50CC 15pF-S 01088 01088 SMD 1206 COND 2 C12-13CC 1nF-S 01096 01096 SMD 1206 COND 5 C15, C17-18, C20, C33CC 1uF100V-S 01760A 01760A Y5V 1206 COND 8 C3-7, C9, C23, C35CC 2nF2 2kV 01045A 01045A CERAMIC COND 3 C36-38CE 100uF25V-S 01793B 01793B ELETTR SMD COND 2 C41, C43CE 10uF35V-S 01778A 01778A ELETTR SMD COND 4 C10, C45-46, C48CE 2200uF25V 01813 01813 ELETT. COND. 1 C39CE 22uF16V-S 01780A ELETTR SMD COND 2 C16, C19D 1N4148-S 03002 03002 SMD DIODE 7 D1-5, D9-10DB KBL04 03042 03042 BRIDGE DIODE 1 PT1DIS DMC16230 03072B 03072B DISPLAY 1 LCD1DL LEDG5 03060 03060 GREEN LED DIODE 5mm 1 DL6DL LEDR5 03061 03061 RED LED DIODE 5mm 1 DL7DL LEDY5 03054B 03054B YELLOW LED DIODE 5mm 1 DL8FUSE 1A MICRO FUSE FUS00007 + FUS00006 PORTA FUSI 1 F1IC 78M05 04301B 04301B SMD VOLTAGE REGULATOR 1 IC12IC 78M12 4307B 04307B SMD VOLTAGE REGULATOR 1 IC11IC 79M08 04304A 04304A SMD VOLTAGE REGULATOR 1 IC14IC INA168 04600A SMD INTEG CIRCUIT 2 IC6-7IC LM393-S 04639 04639 SMD INTEG CIRCUIT 1 IC5IC LMV324M-S 04658B 04658B SMD INTEG CIRCUIT 2 IC4, IC8IC MAX232-S 04804B 04804B SMD INTEG CIRCUIT 1 IC2IC MAX3080-S 04770 04770 SMD INTEG CIRCUIT 1 IC1IC MC14094BD 04718 04718 SMD INTEG CIRCUIT 1 IC9IC PIC16F877 4869 04869 + 07509C INTEG CIRCUIT 1 IC3IC TC7662BCOA 04758A 04758A SMD INTEG CIRCUIT 1 IC13IC ULN2003A 4870 04870 SMD INTEG CIRCUIT 1 IC10IND 2u2H-S 05020A 05020A INDUCTOR 1 L1J CON HD515V/05-4PVE 02881 + 02882 PANDUIT PCB CONN 2 J9-10J FC-10P 02697-02699 02697+02699 PCB CONNECTOR POL 2 J1, J4J FC-16P 02701-02700 02701+02700 PCB CONNECTOR POL 1 J5J PAN2 02739-40-41 02739+02740+02741 PCB CONNECTO 1 J2J PAN8 02716-17-18 02716+02717+02718 PCB CONNECTO 1 J3JU JUMP3 02707-02742 02707+02742 MASCHIO PAN3 1 JP1MOV 275V 00951A VARISTORE 1 MOV1R 100K-1%-S 00065B 00065B RES 1/4W 1% SMD 1206 2 R29, R32R 10K-1%-S 00053B 00053B RES 1/4W 1% SMD 1206 12 R1-2, R4, R8, R12, R22,R23, R27-28, R31, R33,R34R 120R-S 00030A 00030A RES 1/4W 5% SMD 1206 1 R45
41Part Name/Number Description Qty. Comps. Page 2/2R 1K0-1%-S 00041B 00041B RES 1/4W 1% SMD 1206 7 R5-6, R10, R14, R24, R38,R39R 1K2-1%-S 00042A 00042A RES 1/4W 1% SMD 1206 3 R40-42R 22K-1%-S 00057B 00057B RES 1/4W 1% SMD 1206 2 R9, R13R 2R2-S 00009A RES 1/4W 5% SMD 1206 1 R3R 3K9-1%-S 00048B 00048B RES 1/4W 1% SMD 1206 1 R37R 470K-S 00073A 00073A RES 1/4W 5% SMD 1206 3 R20, R36, R46R 470R-1%-S 00037B 00037B RES 1/4W 1% SMD 1206 1 R44R 47K-1%-S 00061B 00061B RES 1/4W 1% SMD 1206 3 R30, R35, R43R 4K7-1%-S 00049B 00049B RES 1/4W 1% SMD 1206 3 R16-17, R21R 68K-1%-S 00063B 00063B RES 1/4W 1% SMD 1206 4 R15, R19, R25-26R 8K2-1%-S 00052B 00052B RES 1/4W 1% SMD 1206 1 R18RL 40.31.12 07567 07567 RELE 3 RLY1-3RV 10K-3266X 00807 00807 VARIABLE RESISTOR 2 R7, R11SW SWITCH-8DIP 07530A PCB DIP SWITCH 1 SW1SW VSS 0033.4604 07519A CAMBIO TENSIONE SERIALE 1 SW3T 06086 N 7630 7632 7630 7632 KTI06086 PULSANTE 2 2 T1-2TR BC848 03457 03457 NPN SMD TRANSISTOR 1 TR1TR BC856 03455 03455 PNP SMD TRANSISTOR 2 TR2-3TRASF TRASF 14V5 7VA 09597 TRASFORMATORE 110+110 PE 1 TRASF1XTAL 20MHz-S CXS00001 QUARTZ 1 XTAL1
42AMPLIFIER INTERFACE SCH0128AR1DESCRIPTIONThe interface board (SCH0128AR1) is used to connect the amplifier stages to the control board(SCH0122BR0) to allow to the microcontroller the reading of the RF and analogical parameters.It is simply composed of one temperature sensor, a voltage regulator, some passive componentes and a10 pin connector J2. This connector has to be connected to the corresponding one of the SCH0122BR0board.The LM317HV (IC1) integrated circuit is an adjustable 3-terminal positive voltage regulator used tomake more stable the power supply voltage of the amplifiers fan.The LM35DT (IC2) integrated circuit is a precision temperature sensor whose output voltage isproportional to the Celsius (Centigrade) temperature. It does not require any external calibration ortrimming. The package is a plastic TO-220 model and the heat sink is directly connected to the amplifier.Component layout SCH0128AR1
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44COMPONENT LIST SCH0128AR1Part Name/Number Description Qty. Comps.CC 100nFAVX 01065A 01065A CERAMIC COND 4 C1-4D 1N4007 03009 03009 DIODE 2 D1-2IC LM317HV 04340A INTEG CIRCUIT 1 IC1IC LM35DT 00664 00664 INTEG CIRCUIT 1 IC2J FC-16P 02701-02700 02701+02700 PCB CONNECTOR POL 1 J2J SCREWCONN2 02853 02853 PCB SCREW CONNECTOR 1 J1JU JUMP2 02739-02742 02739+02742 MASCHIO PAN2 2 JP1-2R 0R02 RES 20W 1% 2 R1R7R 220R 0033 0033 RES 1/4W 5% 1 R3R 270R 0034 0034 RES 1/4W 5% 1 R2R 4K7 0049 0049 RES 1/4W 5% 1 R4R R400m NOT MOUNTED NOT MOUNTED 2 R5-6
45SP500-48 SWITCHING POWER SUPPLY E0013MAIN FEATURES- Universal AC input / Full range- Built-in active PFC function, PF>0.95- Protections: Short circuit / Over load / Over voltage / Over temp.- Forced air cooling by built-in DC fan- Built-in cooling Fan ON-OFF control- Built-in remote sense function- Fixed switching frequency at 110kHzMECHANICAL SPECIFICATION17015050932-M3 L=16mm max.2-M3 L=4mm max.9.5 11. 5811 . 51201514131211109876543217A 50/60Hz100-240VACINPUT(AC )-S-V+24V 20A+S+VADJ.SP-500-24E183223LEVEL5R.C.G.L N FG NC NC R.C.PIN N° ASSIGNMENT PIN N° ASSIGNMENT1 AC/L 7 R.C.2AC/N8 +S3 FG 9 ~ 11 DC OUTPUT +V4, 5 NC 12 ~ 14 DC OUTPUT -V6R.C.G.15 -S
46TECHNICAL CHARACTERISTICSMODEL SP500-27 SP500-48OUTPUTDC VOLTAGE 27V 48VRATED CURRENT 18A 10ACURRENT RANGE 0 ~ 18A 0 ~ 10ARATED POWER 486W 480WRIPPLE & NOISE (max.) Note 2 200mVp-p 300mVp-pVOLTAGE ADJ. RANGE 24 ~ 30V 41 ~ 56VVOLTAGE TOLERANCE Note 3 ± 1.0% ± 1.0%LINE REGULATION ± 0.5% ± 0.5%LOAD REGULATION ± 0.5% ± 0.5%SETUP, RISE, HOLD TIME 1500ms, 50ms, 20ms at full loadINPUTVOLTAGE RANGE 88 ~ 264VAC 124 ~ 370VDCFREQUENCY RANGE 47 ~ 63HzPOWER FACTOR PF>0.95/230VAC PF>0.95/115VAC at full loadEFFICIENCY (Typ.) 86.5% 87%AC CURRENT 7A/115VAC 3.5/230VACINRUSH CURRENT (Max.) 18A/115VAC 36A/230VACLEAKAGE CURRENT <3.5A/240VACPROTECTIONOVER LOAD105 ~ 135% rated output powerProtection type: Fold back current limiting, recovers automatically after fault condition is removedOVER VOLTAGE31 ~ 36.5V 57.6 ~ 67.2VProtection type: Hiccup mode, recovers automatically after fault condition is removedFAN CONTROL O.T.P. RTH1 or RTH2 >= 50°C FAN ON, <= 45°C FAN OFF, >= 70°C output shutdownFUNCTION REMOTE CONTROL RC+/RC-: Short = power on; Open = power offENVIRONMENTWORKING TEMP. -10 ~ +50°C (Refer to output load derating curve)WORKING HUMIDITY 20 ~ 90% RH non-condensingSTORAGE TEMP., HUMIDITY -20 ~ +85°C, 10 ~ 95% RHTEMP. COEFFICIENT ± 0.03%/°C (0 ~ 50°C)VIBRATION 10 ~ 500Hz, 2G 10min./1cycle, period for 60min. each along X, Y, Z axesSAFETY & EMC(Note 4)SAFETY STANDARDS UL1950, TUV EN60950 ApprovedWITHSTAND VOLTAGE I/P-O/P:3KVAC I/P-FG:1.5KVAC O/P-FG:0.5KVACISOLATION RESISTANCE I/P-O/P, I/P-FG, O/P-GD:100M Ohms/500VDCEMI CONDUCTION & RADIATION Compliance to EN55022 (CISPR22) Class BHARMONIC CURRENT Compliance to EN61000-3-2,-3EMS IMMUNITY Compliance to EN61000-4-2,3,4,5,6,8,11; ENV50204, Light industry level, criteria AOTHERSMTBF 133.4K hrs min. MIL-HDBK-217F (25°C)DIMENSION 170*120*93mm (L*W*H)PACKING 1.9kg; 8pcs/15.2kg/1.06CUFT
47DERATING CURVEOUTPUT DERATING VS INPUT VOLTAGEAMBIENT TEMPERATURE ( )LOAD (%)-10 0 10 20 30 40 45 50 (HORIZONTAL)20406080100INPUT VOLTAGE (V) 60Hz11 588 135 155 230 264901008070605040LOAD(%)
48SPECIFICATIONSFrequency 470 - 860MHzConnectors NInsertion loss 0.55dB Typ. @ V.C.Return loss 26dBOperating temperature -10° to +50°CBandwidth 8MHzSelectivity @V.C.-5.5/+11 -30dBSelectivity @V.C.-11/+16.5 -22dBWeight 1.2kg3 SECTION BANDPASS FILTER WITH 2 NOTCH ELEMENTS - COMB-LINE STRUCTURE, INDUCTIVE COUPLINGIRISES; CONSTANT BANDWIDTH, VERY EASY TO TUNE - EXACT GENERALIZED CHEBISHEV DESIGNGIVING MAXIMUM SELECTIVITY AND MINIMUM GROUP DELAY VARIATION.UHF TV OUTPUT FILTER IMD SUPPRESSOR 06604A
49TECHNICAL DESCRIPTIONThe output UHF filter is made up of a resonators bandpass filter and two notches. It can be regulated on allthe channels of UHF TV band (470 - 8690MHz) and according to all world-wide standards (intercarrier 4.5- 6.5MHz). The bandpass section is composed by the three middle resonators, while the two resonatorsapart are the notches. The filter is symmetrical, therefore the choice of lowest and highest notch is indifferent.The bandwidth and the notch depth are predetermined, so they don’t need any regulation.The input/output coupling are regulated by means of the two screws which are in position opposed toevery connector. The regulation is carried out with a screwdriver, considering that when the screwlines are parallel to the longer side of the filter the coupling is maximum, otherwise if orthogonal it isminimum. The twist friction of the couplings can be set acting on the hexagonal clamps with a no. 12key.TUNING INSTRUCTIONSThe advised sequence is the following:1. Set the instrument state as follows:- C.F. = (V.C. + S.C.) / 2- SPAN = INTERCARRIER * 5 (E.G. 27,5MHz std. B/G)- TRANSMISSION SCALE = 5dB/div.- REFLECTION SCALE = 5dB/div.2. Turn the bandpass section on the required channel, and match input and output until a correct responseis achieved. During this step keep the tunings of the two notches well far away from the response. Fit thecurve at the center of the screen, so as to get the same attenuation at the borders. The input/outputcouplings can influence the external resonators, therefore it will be necessary to repeatedly fix theformer after the latter in small steps.3. Tune the two notches to P.V.-INTERCARRIER and P.A.+INTERCARRIER frequencies. This willvary the response and matchning.4. Adjust the bandpass external tunings. The lower notch side tuning shall be a little unscrewed, whereasthe upper notch side tuning will have to screwed.5. Enhance a little the lower notch side coupling (the coupling screw toward the filter lenghth). Improvethe calibration alternatively acting on two sides according to this sequence: regulate the couplings, re-tune
50notches if it has to be moved and then the bandpass tunings. Execute the sequence in small steps aiming toimprove the matching.SPECIFICATION OVER THE UHF BANDSAMPLE FREQUENCY RESPONSE DIAGRAMMEASURE VALUEInsertion loss @ V.C. < 0.65dB (Typ. 0.56)Return Loss (from V.C.-0.75 to S.C.+0.25) > 26dBAttenuation @ V.C.-INTERCARRIER > 25Attenuation @ V.C.+INTERCARRIER > 20Date D.T.

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