Elettronika AUTV/250LD User manual

AUTV/250LD
LDMOS - UHF TV Solid State Amplifier
CODE APT134A TITLE AUTV/250LD REV 0DATE 06/11/03

SS 96 Km 113
70027 Palo del Colle (Ba) ITALY
Tel. [phone]
Fax [phone]
E-mail: [email protected]
Web site: http://www.elettronika.it
Registration number: IT-17686
Registration number: IT-24436

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WARNING
The 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 THE
PRECAUTIONS AGAINST INCIDENTS
It 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.
IMPORTANT
The 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 with
equivalent characteristics but of a different type, assuring anyway the optimal work of the apparatus
in 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 Elettronika
S.r.l. will be prosecuted by the law.
The data and technical characteristics of the apparatus described in this manual are not compelling for
the manufacturer.
The Elettronika S.r.l. reserves the right to make, without previous notice, modifications or updates in
order 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.

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Summary of warranty
We, ELETTRONIKA S.r.l., SS096 Km 113 Z.I. PALO DEL COLLE (BA) ITALY, warrant to the ORIGINAL PURCHASER of a NEW product, for a
period of one (1) year from the date of purchase by the original purchaser (the “warranty period”) that the new ELETTRONIKA product is free of defects
in materials and workmanship and will meet or exceed all advertised specifications for such a product. This warranty does not extend to any subsequent
purchaser or user, and automatically terminates upon sale or other disposition of our product.
Items excluded from this ELETTRONIKA warranty
We are not responsible for product failure caused by misuse, accident, or neglect. This warranty does not extend to any product on which the serial
number has been defaced, altered, or removed. It does not cover damage to loads or any other products or accessories resulting from ELETTRONIKA
product failure. It does not cover defects or damage caused by use of unauthorized modificstions, accessories, parts, or service.
What we will do
We will remedy any defect, in material or workmanship (except as excluded), in our sole discretion, by repair, replacement, or refund. If a refund is
elected, then you must make the defective or malfunctioning component available to us free and clear of all liens or other encumbrances. The refund will
be equal to the actual purchase price, not including interest, insurance, closing costs, and other finance charges less a reasonable depreciation on the
product from the date of original purchase. Warranty work can only be performed at our authorized service centers or at our factory. Expenses in
remedying the defect will be borne by ELETTRONIKA, including one-way surface freight shipping costs within the United States. (Purchaser must bear
the 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 service
You 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 an
authorization to return the product for service. All components must be shipped in a factory pack or equivalent which, if needed, may
Desclaimer of consequential and incidental damages
You are not entitled to recover from us any consequential or incidental damages resulting from any defect in our product. This includes any damage
to another product or products resulting from such a defect.
Warranty alterations
No 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 of
the use of the product. Repairs and replacement parts are provided under the terms of this warranty shall carry only the unexpired portion of this
warranty.
Design changes
We reserve the right to change the design of any product from time to time without notice and with no obligation to make corresponding changes in
products previously manufactured.
Legal remedies of purchaser
There is no warranty which extends beyond the terms hereof. This written warranty is given in lieu of any oral or implied warranties not contained
herein. We disclaim all implied warranties, including without limitation any warranties of merchantability or fitness for a particular purpose. No action
to enforce this warranty shall be commenced later than ninety (90) days after expiration of the warranty period.
Warranty for electronic tubes
The warranty applied for electronic tubes is the one given by the manufacturer of the tube. In the event that the product shows anomalies within the
deadline 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 needed
documents and the written description of the defect. The seller will ship the broken tube to the manufacturer in order to effect the necessary technical
tests 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 have
to 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 made
by 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 of
the 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 no
right against the seller.
Warranty

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INTRODUCTION
The 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 the
various 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 learn
how to obtain the best of its characteristics.
CONTENTS OF THE MANUAL
The 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.

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WARNING!
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 the
dangers 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 by
personnel in using this or other electronic equipment.
The installation, operation, maintenance and service of this equipment involves risks both to personnel
and 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 or
from the use of improperly trained or inexperienced personnel performing such tasks.
During installation and operation of this equipment, local building codes and fire protection standards
must be observed.
WARNING!
Always disconnect power before opening covers,
doors, enclosures, gates, panels or shields.
Always use grounding nsticks and short out high
voltage points before servicing. Never make
internal adjustments, perform maintenance or
service 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.

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A - AIRWAY
If unconscious, open airway lift up neck, push
forehead back, clear out mouth if necessary,
observe for breathing.
Treatment of electrical shock
1) If victim is not responsive follow the A, B, C’s of basic life support.
PLACE VICTIM FLATON HIS BACK ON AHARD SURFACE
B - BREATHING
If not breathing, begin artificial breathing. Tilt
head, pinch nostrils, make airttght seal, 4 quick
full breaths. Remember mouth to mouth resuscita-
tion must be commenced as soon as possible.
C - CIRCULATION
Check carotid pulse. If pulse
absent, begin artificial circulation.
Approx. 80sec.: 1 rescuer, 15 compressions, 2 quick breaths.
Approx. 60sec.: 2 rescuers, 5 compressions, 1 breath.
NOTE: DO NOT INTERRUPT RHYTHM
OF COMPRESSIONS WHEN SECOND PERSON
IS GIVING BREATH.
Call for medical assistance as soon as possible.

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2) If victim is responsive:
- keep them warm;
- keep them as quiet as possible;
- loosen their clothing (a reclining position is recommended).
FIRST-AID
Personnel engaged in the installation, operation, maintenance or servicing of this equipment are urged
to become familiar with first-aid theory and practices. The following information is not intended to be
a complete first-aid procedure, it is brief and is only to be used as a reference. It is the duty of all
personnel using the equipment to be prepared to give adequate Emergency First Aid and thereby pre-
vent avoidable loss of life.
TREATMENT OF ELECTRICAL BURNS
1) 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 or
ointment;
- treat victim for shock as required;
- arrange transportation to a hospital as quickly as possible;
- if arms or legs are effected keep them elevated.
NOTE
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).
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.

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Further 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 Elettronika
S.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 expressly
labelled as lead-free) along with normal wastes;
2) Such devices must be brought to proper centres able to perform the adequate processing in order to
recycle their parts where possible and dispose of the raw materials contained therein;
3) For equipment purchased from Elettronika after the 13th ofAugust 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 environment
and may be accumulated in the organism of plants and mammals. It is dangerous for humans because it may
affect 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 for
aquatic 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 irritate
and whiten the gums, and its effects may be cumulative. Based on tests on animals, it may affect the human
reproduction 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 in
1) 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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LDMOS - UHF TV AMPLIFIER
AUTV/250LD
User’s manual

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Section 1 - Information
Contents:
1.1 Description
1.2 Technical characteristics

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AUTV/250LD
LDMOS - UHF TV AMPLIFIER
1.1 DESCRIPTION
The 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 LDMOS
technology. The power supply of the apparatus is given by a switching power supply for the RF power
module and a traditional transformer for the control board. The protection board uses all the potential of a
microprocessor 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 compact
apparatus, it is all inside a standard 19”-4U cabinet, with a very good price-to-quality ratio.

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1.2 TECHNICAL CHARACTERISTICS
RF SECTION
Frequency range 470 - 860MHz
Output power 250W
Gain 13dB +/-1
RF Input impedance 50Ω
RF Output impedance 50Ω
I.M.D. (3 Tones: -8, -10, -16dB) < -54dB (with IF Pre-corrector)
RF Spurious products Better than -60dB
Filter insertion loss < = 0,6dB
RF Input connector N Female
RF Output connector N Female
GENERAL
Power Supply 90-260VAC
Typical power consumption 600VA(Black)
RS232 Socket DB9 Connector
Telemeasuring socket DB9 Connector
Cabinet Rack 19”-4U
Dimensions 421x368x178mm
Weight 25kg
Ambient temperature -5° to +45°C
Humidity 20% - 90%
PROTECTION THR.
FWD Power 300W
REF Power 20W
Temperature 70°C
IDC 14A
VDC Min 5V - Max 34V

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Section 2 - Installation
Contents:
2.1 Operating environment
2.2 Preliminary operations
2.3 Telemeasuring socket connections
2.4 RS232 / RS485 Socket connections
2.5 Control system
2.6 Preventive maintenance
- Front panel
- Rear panel

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2.1 OPERATING ENVIRONMENT
You can install the apparatus in a standard component rack or on a suitable surface such as a bench or
desk. In any case, the area should be as clean and well-ventilated as possible. Always allow for at least
2 cm of clearance under the unit for ventilation. If you set the apparatus on a flat surface, install spacers
on the bottom cover plate. If you install the apparatus in a rack, provide adequate clearance above and
below. Do not locate the apparatus directly above a hot piece of equipment.
2.2 PRELIMINARY OPERATIONS
Correct installation of the equipment is important for maximum performance and reliability. Antenna
and 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 the
amplifier;
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 OUTPUT
COAXIAL CABLE.
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2
RF IN
RF IN

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Before powering fully the apparatus, check that the output connections of the coaxial cable to the antenna
system are working.
In order to this it is possible to check the indication of the reflected power at low power levels. Only if
the SWR indication on the display is 0, the output power can be slowly increased. At maximum output
power, some watt might be shown as reflected power
2.3 TELEMEASURING SOCKET CONNECTIONS
DB9 Socket
PIN N° SIGNAL TYPE IN / OUT FUNCTION
1Ground - -
2AnalogOutput
FWD Power
0 to 5V
3 Digital Input Floating: ON - GND: OFF
Valid only in remote (Pin 6= GND)
4 Digital Output 0: Alarm - 1: No alarm
TTL Level
5 - - Not used
6 Digital Input Floating: Local
GND: Remote (Pin 3 Command accepted)
7AnalogOutput
REF Power
0 to 5V
8AnalogOutput
Te mp e r a t ur e
0 to 5V
9 - - Not used
2.4 RS232 / RS485 SOCKET CONNECTIONS
The DB9 connector can be used in two modes (RS232 or RS485) depending on the position of the Dip-
Switch.
PIN N° 123456789
RS232 -RXTX+5VGND+5V---
RS485 - RX- RX+ +5V GND +5V TX- TX+ -
SW1 12 34 5 6 78
RS232 Open Open Open Open Closed Closed Closed -
RS485 Closed Closed Closed Closed Open Open Open -

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2.5 CONTROL SYSTEM
The control system allows the user to monitor the most important measures of the transmitter, voltage
and current of the power supply, temperature of the RF board, forward and reflected power, by using
the 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 the
measure 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 MAINTENANCE
To ensure maximum performance and minimum repair trouble, we strongly recommend you to follow
the 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 front
panel controls;
3. if the apparatus has not been used for a long period of time combined with exposure to extreme
environmental 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 fans
are 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 visible
dust, remove it by means of a soft brush.