Elettronika S r l PLLC 30 WATT FM TRANSMITTER User Manual

Elettronika S.r.l. 30 WATT FM TRANSMITTER

User Manual

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Date Submitted2005-02-25 00:00:00
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Document TitleUser Manual

PLL/CT
FM Radio Transmitter
User’s manual
ngfimwm coma: 073043 nus: PLL/CT REV: 0 DATE: 02/07/02
‘ mm
Hegrsiramm number: lT-175a5
SS 96 Km 113
70027 Palo del CoIIe (Ba) ITALY
, Tel. +39 (o)so 626755
Registration number: lr-zms Fax +39 (0)80 629262
E-mail: eleflronika@eleflronika.it
CE 0682 (9 Web siste: hnp://www.elettronika.it
Index
Index ................................................................................................................................... 3
Warning
Warranty
Introduction .................
Content of the manual
Treatment of electrical shock.
First—aid ..............................
Treatment of electrical burns
Note ..........................
Section 1 - Information
1. 1 Description ...................
1.2 Technical characteristics.
Section 2 - Installation ..........
2.1 Operating environement .
2.2 Preliminary operations.
2.3 Telemeasuring socket ..
2.4 Functioning .....................
2.5 Preventive maintenance .
Frontal panel ..
Hear panel ..
Section 3 - Diagram .
Cable diagram ................................
SCHMQARS ( FM Transmitter board).
PN395 (Displa y board) ... .. ..
PN417 (MPX Stereocoder) .
PN484 (30W FM Amplifier layout)
PN448/I (30W FM Amplifier) . .. .. .. ..
PN438/C (Directional coupler and Low—Pass Filter)
PN0515 (Powerregu/ator)
5—150-24 ( Switching power supply) ..
Adjustment and test — Appendix
Testprocedure
RF Section .............................
Mother board (Modulation/Limitation circuit) ..
Main characteristics of the FM transmitters ................................................................... 58
This page is intentionally blank
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
e component lists attached to the relevant electrical diagrams indicate for each item the reference,
t e description and the type normally used.
”re Eletflonika S.r.L though reserves the right to use or supply as spare parts components with
ec uivalent characteristics but of a different type, assuring anyway the optimal work of the apparatus
in accordance with the specifications.
T e enclosed monographs are solely owned by Elettronika S.r.l.
he use of anything enclosed in this technical manual without explicit authorization given by Elettmm'ka
S.r.l. will be prosecuted by the law.
e data and technical characteristics of the apparatus described in this manual are not compelling for
t e manufacturer.
T e Elettronika S.r.l. reserves the right to make, without previous notice, modifications or updates in
order to improve the quality of the product.
re general conditions of supply and sale are described in the contracts.
e delivery time are in accordance with the products and quantities ordered.
Warranty
Summary 01 warranty
We, ELmRUNIKA s.r.l., mm Km 11] Z]. PALO DEL CDU.E(BA ) ITALY, warrant to the ORIGINAL PURCHASER oja NEW product, jwa
period ofotie lltyear/rom the date ofpurchase by the origith purchaser (the "u arratay period") that the um ELmRo/vllm product is free o/defects
in materials and i. orhmanship and n ill meet or (Areal all adr ertisedspecifications/or such a product This narranty does not eutend to any subxzquem
purchaser or user, aiul automatically teririiruttes upon sale or other disposition afour product
ltems excluded from this ELETTHONIKA warranty
We are not responsible for product failure camed by misuse, accident, or neglect. This narranty does not estend to any product on which the serial
number has been defaced, altered, or remm ed. It does not eat er damage to loads or any other prodae—ts or accessories resulting from ELEITRUNIKA
product/allure. it does not cot er deer—ts or damage caused by use ofiaututhorloed modifirstlons, accessories, parts, or sets ire.
What we will do
We will remedy any defect, in material or n wkmallxhlp (aveplus escluded), in our sole ducretton by repair, replacement, or refund. l/a refitnd is
elected, then yuu mast malre the defectire or trial/anointing component a. ailable to us free and clear ofall liens or other encumbrances. The refund will
be equal to the actual parchaseprioe, not including interest, insurance closing costs, and other finance charges less a reasonable depreciation at the
product from the date of original purchase. Warranty work can oily be performed at our amhortred sea ice centers or at our factory. Expnuts in
remedying the defect will be borne by ELETIRONIKA ilwludi'lig oneuay surface freightshipping costs uitlnn the United States. (Pmchrdsermuxr bear
the espense ofsln'pping the product between any/Diets]! county and the port ofentr} in the United States and all tines, duties, and other custom -sfeets)
for such foreign shipments).
How to oblzin mrramy service
You must notify us o/your need for u artanty service not later than ninety (out day: ufier the eupiration ofthe u arrantypetiod We w ill give you an
authorioitiou ta return the product for service All components must be shipped in a factory pack or equivalent w hich, ifneeded, may
Desclaimer of consequential and incidental damages
Yuu are not entitled to recoi nfmm us any consequential or incidental damages resulting from any drfn‘r in ourprudud. This includes any damage
to another prodie—t or products resulrlngfroiri such a defect.
Warlantyalterations
No person has the authority to enlarge, or modizr this warranty. The nartanty u not erteiuled by the lenght itftimefor Whit
the use of the product, Repairs and replaceirieit parts are provided under the terms a] this narranty shall carry only the uiiespired portion a] this
u arrantyi
Design changes
We ”sen e the tight to change the design ofanyptolnetfrom time to time without notice and with no obligation to male corresponding changes in
products prfl lously manufactured.
Legal remedies ol purchaser
There is no narranty nhich (Maid: beyond the terms hereof This a ritten warranty is given in lieu o/any oral or uriplted uranmmes not contained
herein We disclaim all implied warranties, including u ithout limitation an, narranties o/merchantability or fitness jpr a particubir purpose No action
to enforce this warmmy shall be commenced later than ninety (90) days (090' espiration ofthe wumJnry period
Warranty forelectronic tubes
The warranty applied for eleflmmc tubes is the one given by the manufacturer iatlte tabs in the e\ ent that the product Jhuu s anomalies within the
deadline of the salidity o/the narranty gll en by the manufacturer oftlie product itself: the buyer will have to return it to the seller with the needed
doctttrients and the wn'flm description o/the defect. The seller will ship the broken tube to the matuaactnret in order to (flat! the necessarr technical
tests to faul out the cause o/the anomaly Meantihile the buyer ofthe tube nho needs to use, and as such to replace anmeduttely the product, will hate
to buy a hen one and provide to the relei ant pa rient, further to the issuing by the seller o/a regular commercial invoice. After the adequate tests made
by the maiue/acturer, should the result be pos , that is confirm the defect in manufacturing, the seller will issue a regular credit note in the iuiirie o/
the buyer aiul return the amount paid should the result be negative, that is detect a negligence in the installation or use by the buyer he n ill have no
right against the seller
INTRODUCTION
The apparatus described in this manual is the latest of mis series, offering high performances, remark-
able reliability and a wide range of characteristics, it all at a low cost.
ts is easy to install and user 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;
3 follow the instructions for the installation and setup of the apparatus;
II 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 the firm ELETTRONIKA S.r.1.
This manual is made up of different chapters, each made up of various sections. Each individual
chapter represents a single apparatus composing the whole station.
WARNING!
The currents and voltages in this equipment are dangerous!
Personnel must at all times observe safegz regplation!
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
Itis 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.rtl. shall not be responsible for injury or damage resulting from improper procedures or
from the use of improperly trained orinexperienced 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.
Treatment of electrical shock
I) If victim is not responsive follow the A, B, C’s of basic life support
PLACE VICTIM FLAT ON HIS BACK ON A HARD SURFACE
A -AIRWAY B - BREATHJNG
If unconscious, open airway lift up neck, push If not breathing, begin artificial breathing Till
forehead back, clear out mouth if necessary, head, pinch nosu'ils, make airtight seal, 4 quick
observe for breathing. fuil blealhs. Remember mouih to mouth resuscita—
tion must be commenced as soon as possible.
C - CIRCULATION
Check carotid pulse, If pulse Approx, 80sec.: l rescuer, 15 compressions, 2 quick breaths,
absenu begin anificialcixculationi Approx. 605eci: Ziescueis, 5 compressions, l bieaLh.
NOTE: DO NOT TNTERRU'PT RHYTHM OF COMPRESSIONS WHEN
SECOND PERSONIS GIVINGBREAT H.
Call for medical assistance as soon as possible.
2) vaictim 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 fluidif vomiting occurs do not give alcohol .
2) Less severe burns - (lst & 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.
10
FM RADIO TRANSMITTER
PLL/CT
User’s manual
11
12
This page is intentionally blank
INFORMATION
Section 1 - Information
Contents:
1. 1 Description
1.2 Technical characteristics
13
I_l
PLL/CT
FM RADIO TRANSMITTER
1.1 DESCRIPTION
The PLlJCT is a Transmitters for Radio communication in the FM band from 87.6 to 107.9MHZ.
The apparatus is supplied with four inputs in order to ensure the compatibility with any Audio signal in
input These inputs are: a Mono input with Pre—ernphasis always enabled, an MPX input for Stereo
multiplexed signals and two SCA inputs for additional digital signals
The Mono input contains a series of low-pass filters able to attenuate by more than 30dB all the
frequencies included between ZOkHz and lOOkHz, compared to the level of the lSkHzr
A limiting circuit, acting on all the input signals, works continuosly in order to avoid the modulation to
be higher than i75kHz.
This family of apparatus uses a Microcontroller which manages the settings of the transmission frequency
with 10 or IOOkHz steps, as required Besides, it checks that the set frequency is not outside the band
allowed, manages the display for the display of the frequency and the power, and works as protection
circuit for the correct functioning of the apparatus. The final stage is made up by an RF transistor
amplifier, with adjustable power up to 30W, with Mosfet technology.
The cabinet, 3U height, is designed for the mounting in rack 19”. Its internal accessibility is ensured
removing the upper paneL The electrical power supply may be selected to be 220 or 110V on the rear
panel, in order to fit to the available main voltage
Options: The transmiuer may be supplied, if required, with Sterea Cutler (PN417) far the sterea transmhsbm of the
audia signal.
14
1.2 TECI-DIICAL CHARACTERISTICS
RF
Frequency range
Output power
RF Output connector / impedance
Frequency programmability
Frequency smbility
Spurious & Harmonie suppression
Modulation capability
Asyneronous AM SIN ratio
Syncronous AM SIN mtio
SOUND SECTION
MPX (filtration
Audio input
Frequency amplitude response
Harmonie distom'on
SIN Ratio with CCIR unweighted
SIN Ratio with CCIR Weighted
S/N Ratio with RMS Detector
MONO Operation
Audio input
Frequency amplitude
Harmonie distom'on
Pie-emphasis
S/N Ratio with CCIR unweighted
S/N Ratio with CCIR weighted
Internal Coder
Audio input
Flequency amplitude
Harmonie distortion
Pie-emphasis
Staeo separation
S/N Ratio with CCIR unweighted
S/N Ratio with CCIR weighted
SCA Operation
Audio input
Frequency amplitude response
87.6 — lO'7l9MHz
30W
N Female / 50!)
me panel
2,513le (option 0,05ppm)
Meets or exceeds all FCC and CCIR lEqulIEfllenls
Meets or exceeds all FCC and CCIR requirements
60dB
5 06.13
zvpp, ENC Connector
i 0.1dB. 3on - lOOkHz
< 0,15%, 30Hz - lOOkHz
80d]?
781113
S6dB
2Vpp, XLR Connector
0,5dB, 30Hz - lSkHz
< 0,15%, 301-12 - lSkHz
Flat sons, 75t|s
BOdB
786.3
2Vpp, XLR Connector
1: 0,5dB, 30Hz — lSkHz
< 0,15%, 30Hz - lSkHZ
Flat Sous, 75ps
> 45dB (rip. 55dB)
746.3
70dB
zvpp, BNC Connector
a 0,1dB, 40m . 100er
15
GENERAL
16
Power supply socket
Power consumption
Cabinet
Dimensions
Weight
Ambient nempemtme
Humidity
llO/ZZOVBC, i 15%, 50/60Hz
l(X)VA
Rack 19"—3U
370x485x130mm
llkg
-10° [0 445°C
20% - 90%
Section 2 - Installation
Contents:
2.1 Operating environment
2.2 Preliminary operations
2.3 Telemeasuring socket connections
2.4 Functioning
2.5 Preventive maintenance
- Front panel
- Rear panel
17
a“
LEI
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 transmitter on a flat surface, install spacers
on the bottom cover plate. If you install the transmitter in a rack, provide adequate clearance above and
below. Do not locate the transmitter directly above a hot piece of equipment.
2.2 PRELHVHNARY OPERATIONS
The equioment is made up by modular units enclosed in a strong cadmium metallic container and fixed
so that removing the upper cover plate of the apparatus all the internal circuits can be seen by the
operator The connection between modules are made almost only by means of connector, thus allowing
an easy replacement of broken-down parts. 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:
I. connect me power supply cable of me transmitter to the auxiliary socket on the rear panel of the
amplifier (if used) omerwise connect it to public network (220VAC);
2. connect the antenna cable to the RF OUT on the rear panel of the transmitter.
m ?
sag
(D
WARNINGIII
FOR ELECTRICAL SAFETY REASONS AND IN ORDER TO RE? THE APPARATUS SAFE, THE
GROUND TERMINAL OF THE APPARATUS MUST BE CONNECTED TO THE EXISTING
GROUNDING SYSTEM AND NOT BY USING THE SHIELD OF THE OUTPUT COAXIAL CABLE.
18
Qt,
fill
Now you may connect the power supply and turn on the apparatus, In normal working conditions the
grid pilot light will be turned on and the display on its upper line the working frequency, while on the
lower line there will be written “PLL UNLOCKED" flashing, In this phase the output power,
independently from the position of the regulator on the frontal panel, is kept to zero. After a few seconds,
during which the frequency has been stabilyzed, the flashing writing will disapper and the apparatus
will be ready to be powered.
2.3 TELEMEASURING SOCKET CONNECTIONS
The following table summarizes me Telemeasuring pin connections
®-®
D 89 Socket
2.4 FUNCTIONING
1 Power supply W0“
Floawtg oN
2 Duflal ‘WU‘ GND Pwsvmhbmon
Analog oumn FWD Power
Analog
Oumut
REF Power
On the frontal panel of the transmitter there is an LCD Display used to show the working parameters of
the apparatus, and four keys allowing to select the readings of these parameters, to set the transmission
frequency and to turn the Stereocoder, if any, on and off. When you turn the transmitter, to appear on the
display me follow message:
FREQ
PLL
we no MHz
UNLOCKED
mcrakumr mm“
1S
;,
In particular, the keys F2 and F3 allow to scroll subsequently on the upper line of the display me reading of me
Direct and the Reflected power, of the transmission frequency, of the model of the apparatus, the name of the
producer and the audio level of the left andright channel. The keys Fl andF4, instead, allow to change allow
to go onto the Programming mode. This operation is described below. In order to change the transmission
frequency of the PLIJC it is needed to go into the Programming mode, this is done pressing simultaneously the
keys Fl and F4.
Select using the key F2 or F3 the option “OUTPUT FREQUENCY“ and confirm using the key F4. Now
a new frequency can be set using either the key F2 or F3.
To exit from the programming mode and confirm the new settings press the key F4, to exit without
saving the changes press F1.To turn the Stereo Coder ON or OFF, press simultaneously F1 and F4, then
select the option “STEREO CODER” using either F2 or F3, and confirm pressing F4.
Now select either “ON STEREO CODER" or “OFF STEREO CODER“ using either F2 or F3, and
confirm using F4. If there is no Stereo Coder, these settins will have no effect.
On the lower line of the display there is usually a bar showing the peak deviation of the frequency. In
case of working anomaly, the same second line of the display will show an alarm message. In detail:
- “FWD POWER ALARM”: in case the output power is higher than 35W;
- “REFL POWER ALARM”: in case the reflected power is higher than SW;
- “PLL UNLOCIED”: if the PLL is unlocked.
At the same time in which the message is shown, the following also happen:
— the maximum output poweris limited to 35W;
- the RF poweris limited so that the reflected power is not higher than SW;
- the working of the RF output module is inhibited.
In case of temperature alarm, led “TEMP. ALARM" will lit up and the inhibition of the final module
will be performed. Always on the front panel, there is the Output power regulator. Set this control for
the desired output power level. Preferably, set the power with an external RF wattmeter connected in
the coaxial line to the antenna. You may also use the RF Power reading on the digital multimeter.
2.5 PREVENTIVE MAINTENANCE
To ensure maximum performance and minimum repair trouble, we strongly recommend you to follow
the below stated guidelines for preventive maintenance:
1. check the antenna installation and ground connection at regular intervals;
20
Qt
iii
2. keep your apparatus clean and dry externally: this will ensure continuous functioning of the front panel
controls;
34 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.
44 for general maintenance and top performance, call an authorized service technician to give the appa-
ratus and the complete antenna/earth connection installation a general check each 12-18 months;
5. check at regular intervals that the airintake located on the front panel is free of dust. If there is Visible
dust, remove it by means of a soft brush.
21
22
<><><><><><> 00
0000000000
<><><><><><><><><><> <>
TX m m/cs
Frontal view
Temperature alarm LED
LCD Display
Function keys
Main switch
Rear view
Power supply socket
Monitor connector
RF Output connector
Telsmsasuring socket
MONO Input connector
SCA1/SCA2 Input connectors
MPX IN/OUT Connectors
L and R Input connectors
23
24
This page is intentionally blank
Section 3 - Diagram
Contents:
- Cable diagram
- SCH0049ARS ( FM Transmitter board)
- PN396 (Displa y board)
- PN417 (MPX Stereocoder)
- PN457/B ( 10 W FM Amplifier)
- PN438/A ( Directional coupler and Low—Pass filter)
- PN45D/C (150W Amplifier module)
- PN0515 ( Power regulator)
— SP500—27/48 ( S Witching power supply)
— Appendix (Adjustment and tests)
25
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PLL/C FM RADIO TRANSMITTER
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26
FM TRANSMITTER BOARD S C H0049AR3
Component layout SCH0049AR3
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0203005 5
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Crosstalk UR > 59dB @ 40Hz
> 70dB @ lkHz
> 53dB @ lSkHz
Pilot Flequency Accumcy < le
Preenphasis sons / mus / FLAT
Weighted S/N ratio (400141) > 80d]?!
Unweighted SIN ratio (ALOOHZ) > SldB
THD 0r03%
IMD (7&8kHz) 0.01397: (DZ)
0.110% (D3)
Power Supply 15Vdc
34
STEREOCDDER Block Diagram
M Eat—mum uni ii, comm Inwual’tlver Putt mm
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uaxcnmm 40
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For the operations descn'bed in this paragraph, refer to m diagram SP417 at the following page;
SETTINGS
JP7JJP4- Allows to select the pieeniplinsis between 50 and 75ps or to completely exclude it removing the junipei;
JP l/JPB: Allows to select the inputn impedance between 600 and 30kQ;
J P5: Insert an auxilialy condenser needed to calibrate the crosstalk with the exciter connected;
JP6: Disables the carrier of the pilot;
JP7: Allows to exchange the left. and right Channels with each otheli
ADJUSTMENTS
R29: Allows to adjust the crosstalk L->R;
R28: Allows to adjust the crosstalk R»>L;
C36: Allows to adjust the crosstalk;
C42: Allows to adjust the pilot frequency;
R27: Allows to adjust the pilot level (SGOmVpp);
RAM/R36: Allows to adjust the peak level of the left/ right channel;
R521R7: Allows to adjust the input signal for the left] right channel;
LPALILPB: Allows to adjust the passing band for the right channel;
LPZILPI: Allows to adjust the passing hand for the left channel.
35
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StereoCoder board
37
COMPONENT LIST 111141 7
REFER.
R1
R2
R3
R4
R5
R6
R7
R8
R9
R10
R1 1
R12
R13
R14
R15
R16
R17
R18
R19
R20
R21
R22
R23
R24
R25
R26
R27
R28
R29
R30
R31
R32
R33
R34
R35
R36
R37
R38
R39
R40
38
TYPE
1.2kQ 1/4W
1.2kQ 1/4W
10k!) 114W
10k!) 1/4W
lOkQ 114W
10k!) 114W
10k!)
1.5kQ 1/4W
100k!) 1/4W
22k!) 1/4W
22k!) 114W
IOQ 114W
4,7kQ 1/4W
417k!) 1/4W
313k!) 1/4W
lOkQ 114W
417k!) 1/4W
417k!) 1/4W
2,2kQ 1/4W
109 114W
417k!) 1/4W
1052 114W
10k!) 114W
2,2kQ 1/4W
212k!) 1/4W
220!) 114W
10k!)
50k!)
50k!)
lOkQ 1/4W
10k!) 1/4W
100m 1/4W
10k!) 1/4W
10k!) 1/4W
8252 1/4W
10k!)
10k!) 1/4W
10k!) 1/4W
10k!) 1/4W
100k!) 1/4W
DESCRIPTION Page 1/5
RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR
TRIMMER
RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR
TRIMMER
TRIMMER
TRlMMER
RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR
TRIMMER
RESISTOR
RESISTOR
RESISTOR
RESISTOR
REFER. TYPE DIBCRIPTION Page 2/5
R41 10k!) 1/4W RESISTOR
R42 10k!) I/4W RESISTOR
R43 109 114W RESISTOR
R44 10k!) TRIMMER
R45 10k!) I/4W RESISTOR
R46 1.2kQ 1/4W RESISTOR
R47 112k!) 1/4W RESISTOR
R48 lOkQ I/4W RESISTOR
R49 10k!) 1/4W RESISTOR
R50 10k!) 1/4W RESISTOR
R51 IOkQ I/4W RESISTOR
R52 10k!) TRIMMER
R53 1,5kQ I/4W RESISTOR
R54 100m 1/4W RESISTOR
R55 22k!) 1/4W RESISTOR
R56 22k!) I/4W RESISTOR
R57 109 114W RESISTOR
R58 417k!) 1/4W RESISTOR
R59 4,7kQ I/4W RESISTOR
R60 313k!) 1/4W RESISTOR
R61 10k!) 1/4W RESISTOR
R62 417k!) I/4W RESISTOR
R18 417k!) 1/4W RESISTOR
R64 2,2](9 I/4W RESISTOR
R65 417k!) 1/4W RESISTOR
R66 109 114W RESISTOR
CI 27pF CERAMIC CAPACITOR
C7. 27pF CERAMTC CAPACITOR
C3 27pF CERAMTC CAPACITOR
OI 27pF CERAMIC CAPACITOR
C5 IOuF 35V ELECTROLYTIC CAPACITOR
C6 IOuF 35V ELECTROLYTIC CAPACITOR
C7 lSOpF CERAMIC CAPACITOR
C8 150pF CERAMIC CAPACITOR
C9 10uF 35V CERAMTC CAPACITOR
C10 IOuF 35V CERAMTC CAPACITOR
C11 12nF CERAMIC CAPACITOR
C12 12nF CERAMIC CAPACITOR
C13 319nF CERAMTC CAPACITOR
C14 100pF CERAMIC CAPACITOR
C15 IOuF 35V ELECTROLYTIC CAPACITOR
C16 56pF CERAMIC CAPACITOR
C17 IOOnF CERAMIC CAPACITOR
C I 8
C I 9
C20
C21
C22
C23
C24
C25
C26
C27
C2 8
C29
C3 0
C3 I
C3 2
C3 3
C34
C35
C36
C37
C3 8
C3 9
CAD
C4 I
OIZ
CA3
OIS
C46
C47
C48
CA9
C5 0
C5 I
C52
C53
C54
C5 5
C5 6
C57
C5 8
C5 9
C60
40
TYPE
IOuF 35V
1I8nF
IOuF
IOOpF
IOuF 35V
IOuF 35V
220pF
IOOnF
2x470uF 35V
100pF
lOOuF 35V
IOuF 35V
22uF 35V
ZXIOOUF 35V
2xIOOuF 35V
IOOuF 35V
2x470uF 35V
56pF
10/40pF
470uF 35V
22uF 35V
luF
22uF 35V
22uF 35V
10/40pF
IOOuF 35V
luF
lOOnF
IOOuF 35V
IOOUF 35V
IuF
IOOTIF
lOOuF 35V
27pF
27pF
27pF
27pF
IOuF 35V
lOuF 35V
150pF
ISOpF
IOuF 35V
IOuF 35V
DECRIPTION
ELECTROLYTIC CAPACITOR
CERAMIC CAPACITOR
ELECTROLYTIC CAPACITOR
CERAMIC CAPACITOR
ELECTROLYTIC CAPACITOR
ELECTROLYTIC CAPACITOR
CERAMIC CAPACITOR
CERAMIC CAPACITOR
ELECTROLYTIC CAPACITOR
CERAMIC CAPACITOR
ELECTROLYTIC CAPACITOR
ELECTROLYTIC CAPACITOR
ELECTROLYTIC CAPACITOR
ELECTROLYTIC CAPACITOR
ELECTROLYTIC CAPACITOR
ELECTROLYTIC CAPACITOR
ELECTROLYTIC CAPACITOR
CERAMIC CAPACTTOR
TRIMMER CAPACTTOR
ELECTROLYTIC CAPACITOR
ELECTROLYTIC CAPACITOR
CERAMIC CAPACITOR
ELECTROLYTIC CAPACITOR
ELECTROLYTIC CAPACITOR
TRTMMER CAPACITOR
ELECTROLYTIC CAPACITOR
CERAMIC CAPACITOR
CERAMIC CAPACTTOR
ELECTROLYTIC CAPACITOR
ELECTROLYTIC CAPACITOR
CERAMIC CAPACITOR
CERAMIC CAPACTTOR
ELECTROLYTIC CAPACITOR
CERAMIC CAPACTTOR
CERAMIC CAPACTTOR
CERAMIC CAPACTTOR
CERAMIC CAPACTTOR
ELECTROLYTIC CAPACITOR
ELECTROLYTIC CAPACITOR
CERAMIC CAPACTTOR
CERAMIC CAPACTTOR
CERAMIC CAPACITOR
CERAMIC CAPACITOR
Page 3/5
C61
C62
C63
C 14
C65
C66
C67
C68
C69
C70
C71
C72
C73
C74
C75
C76
C77
C78
C79
L1
L2
L3
L5
L6
L7
L8
L9
LPI
LP2
LP3
LP4
RL1
D 1
D2
D3
D4
D5
D6
ICI
IC2
IC3
IC4
TYPE
12nF
12nF
3 I9nF
100pF
IOUF 3 5V
56pF
IOOnF
IOUF 35V
IISUF
IOuF 3 5V
IOOpF
IOuF 3 5V
IOUF 3 5V
220pF
IOOnF
220uF 35V
220uF 35V
IOOnF
220uF 35V
22uH
22uH
470uH
470uH
2X470uH
47011H
470uH
22uH
22uH
IN4148
1N4148
1N4I48
IN4148
1N4148
1N4148
LM833
LMB33
LM3 I7T
TC7660HC
DMPTION
CERAMIC CAPACITOR
CERAMIC CAPACITOR
CERAMIC CAPACITOR
CERAMIC CAPACITOR
ELECTROLYTIC CAPACITOR
CERAMIC CAPACITOR
CERAMIC CAPACITOR
ELECTROLYTIC CAPACITOR
CERAMIC CAPACITOR
ELECTROLYTIC CAPACITOR
CERAMIC CAPACITOR
ELECTROLYTIC CAPACITOR
ELECTROLYTIC CAPACITOR
CERAMIC CAPACITOR
CERAMIC CAPACITOR
ELECTROLYTIC CAPACITOR
ELECTROLYTIC CAPACITOR
CERAMIC CAPACITOR
ELECTROLYTIC CAPACITOR
IMPEDANCE
IMPEDANCE
IMPEDANCE
IMPEDANCE
IMPEDANCE
IMPEDANCE
IMPEDANCE
IMPEDANCE
IMPEDANCE
DIODE
DIODE
DIODE
DIODE
DIODE
DIODE
LG
LG.
LG
LG
Page 4/5
41
REFER.
IC5
IC6
IC7
42
TYPE
LM833
LM833
11082
CI‘C30-1
PN417
DESCRIPTION
LG.
LG
LG.
MPX MODULE
PRINTED CIRCUIT BOARD
Page 5/5
30W FM AMPLIFIER
PN484
TECHNICAL CHARACTERISTICS
Output Power 30W
Gain 29dB
RFInputImpedance 5012
RF Output Impedance 509
DC power ZSVdc
Driver power supply 1025Vdc
Frequency Range 87.5 - lOSMHz
43
30W FM AMPLIFIER PN448/I
TECHNICAL CHARACI'ERISTICS
Output Power 0-30W
Gain ZZdB
RFInput Impedance 5012
RF Output Impedance 509
DC Power ZSVdc
Driver power supply 1025Vdc
Frequency Range 87.5 - lOSMHz
Component layout PN448/1
+28V (fisso)
+28V (Variabile)
‘ xw
\\\\\\\\p\\\\\m\\\x\\\\\\\\\‘
44
Eméflwwm
s. r. 1.
Schema Elettrico 30W FM
DATA 12/05/95
mFEmmeta Lasagna
SE448/I 1/2
45
COMPONENT LIST - 30WFM AMPLIFIER
REFER.
R1
R2
R3
R4
R5
R6
C1
C2
C3
01
C5
C6
C7
C8
C9
C10
C11
C12
C13
L1
L2
TR1
46
TYPE
129 ‘AW
1M!) MW
IkQ 111W
100k
5.6k9 1/4W
229 111W
6.8pF
100pF
1000pF 500V
1000pF 500V
100pF
6.8pF
100pF
100nF
100nF
47nF
2.2uF
22pF
IOPf
VKZOO
BF245
PN448/I 1/2
DESCRIPTION
SMD RESISTOR
SMD RESISTOR
SMD RESISTOR
SMD TRIMMER
SMD RESISTOR
SMD RESISTOR (2x)
SMD CAPACITOR
SMD CAPACITOR
SMD CAPACITOR
SMD CAPACITOR
SMD CAPACITOR
SMD CAPACITOR
SMD CAPACITOR
SMD CAPACITOR
SMD CAPACITOR
SMD CAPACITOR (3x)
ELECTROLYTIC CAPACITOR
SMD CAPACITOR
SMD CAPACITOR
8 TURN COIL
RF CHOKE
RF TRANSISTOR
PRINTED CIRCUIT BOARD
ELéfi‘flwNfiGA
s r l
Schema Eletmco 2W FM
Pilota 30W a Mosfet §_1”jg/I”§7§
47
COMPONENT LIST - 2WPILOT MODULE
REFER. TYPE DESCRIPTION
RI 12052 1/4W SMD RESISTOR
R2 569 1/4w SMD RESISTOR
R3 1200 1/4W SMD RESISTOR
R4 39kQ 1/4W SMD RESISTOR
R5 100k SMD TRIMMER
R6 12k!) 1/4W SMD RESISTOR
R7 479 1/zW SMD RESISTOR
R8 109 1/1W SMD RESISTOR
CI 681113 SMD CAPACITOR
CZ ISOpF SMD CAPACITOR
C3 IOOnF SMD CAPACITOR
C4 IOOpF SMD CAPACITOR
C5 Z.2uF ELECTROLYTIC CAPACITOR
C6 IOOnF SMD CAPACITOR
C7 IOOpF SMD CAPACITOR
C8 7.20pF SMD CAPACITOR
C9 1.5pF SMD CAPACITOR
L1 VKZOO RF CHOKE
L2 VKZOO RF CHOKE
L3 6 TURN COIL
L4 6 TURN COIL
TRI BLF242 RF TRANSISTOR
PN448/I 2/2 PRINTED CIRCUIT BOARD
48
DIRECTIONAL COUPLER AND L.P.F. PN438/C
DESCRIPTION
The PN438/C contains two stages, the first stages is a directional coupler which measure the incident
and reflected RF signals.
These signals are elaborated to be used by protection module for SW and Power protection
The second stage is a low-pass filter ehich removes the harmonics.
TECHNICAL CHARACTERISTICS
Retum Loss >= 30dB
Insertion Loss < 0,2dB
Atienuation at. 176MHz > ALOdB
Component layout pn438/C
49
D Schema Elettrico Filtro 30W FM
ELéfr‘WCCDNMA
50
COMPONENT LIST pn438/C
REFER.
R 1
R2
C 1
C2
C3
C4
C5
C6
C7
C8
C9
D 1
D2
L1
L2
L3
L4
TYPE
68!) 114W
2209 I/4W
39pF
56pF
68pF
56pF
47pF
18pF
InF
lnF
18pF
BAT 83
BAT 83
PN43 SIC
DESCRIPTION
SMD RESISTOR
SMD RESISTOR (21)
SEMCO CAPACITOR
SEMCO CERAMIC CAPACITOR
SEMCO CERAMIC CAPACITOR
SEMCO CERAMIC CAPACITOR
SEMCO CERAMIC CAPACITOR
CERAMIC CAPACITOR
PHILIPS SMD CAPACITOR
PHILIPS SMD CAPACITOR
CERAMIC CAPACITOR
DIODE
DIODE
4T, dzlrnm, D28mm
4T, dzlmm, Dz8mm
4T, d=lmm, D=8mm
4T, d=1mm, D=8mm
PRINTED CIRCUIT BOARD
51
POWER REGULATOR
P 0515
Component layout PN0515
-®‘2@1c3102_|c
CC
COMPONENT LIST 11110515
REFER. TYPE DESCRIPTION
C1 100nF 50V DISCO COD. 1065 (Umuonmcd in PLL/C and PLL/CS—Z)
C3 100nF 50V DISCO CODA 1065
C6 lOOnF 50V DISCO CODA 1065
C8 IOOnF 50V DISCO COD. 1065
C2 100uF-50V 50V ELETA VERTA COD. 1795
C5 lOOuF-SOV 50V ELET1 VERT1 COD. 1795
C7 100|JF750V 50V ELET. VERT. COD. 1795
C4 10uF-63V 63V BLED VERTA CODA 1779
R5 15R RES 1/4W 5% COD. 0019
R7 1K5 RES 1/4W 5% COD. 0043
D1 1N4007 (Unmounlcd |n PLUG and Pmcsrz)
D2 1N4007
D3 1N4007
R1 220R RES 1/4W 5917 COD. 0033 (unmounted m I’LL/C and I’LL/C572)
R6 220R RES 114W 5% COD. 0033 (Unmoumed in PLUC and PLL/CSVZ)
R4 470R RES 1/4W 5% COD. 0037
R3 3909 2W RESISTENZA A FIDO ZW 5% (Umnvuntcd m PLL/C and PLUCSVZ)
R2 5600!) 114W RES 1/4W 5% COD. 0049
IC3 7815 15V 1A CODA 4325
IC1 LM317-H STABILIZZATORE(Umuoum=deLL/C mdPLL/CSVZ)
IC2 LM317—H STABILIZZATORE
J2 PETI'INE-PCB-Z PER PCB 2 PIN A PEI'ITNE
J 1 SGN CIRCLE PAD CIRCOLARE 2.54mm
13—9
52
\\;
§
Eméfiaflim
gr I.
53
SWITCHING POWER SUPPLY S-150-24
SPECIFICATIONS
MODEL 5-150-24
Input voltage 88~132VACII76~264VAC selected by sw.
Input flequeuey 47-63Hz
Inmsh cument Cold star, 35A
Output voltage ZAV, 6.5A
Overload pmteetiou 105%-150% output shuudown
Over voltage protection 115%—135% of output voltage
(5-150-24 12596—14595)
Setup, rise, hold up time 100m, 50:05, 201115
Withstand voltage I/P-O/P: SKV, I/P-FG: 1.5KV, lmin.
Working temp 0-30°C@100%, 50°C@100% with cooling fan, -10°C@80%
(15V&24V 0—50°C@100%, 60°C@60%)
Safety Standards UL 1012, TUV EN60950
EMC standards (ENSSOZZ), IECSOl-Z, 3, 4, IECSSS-Z
Connection 7P/9.5mm pitch terminal block
Weight 0.8kgs
Packing 20PCS/l ACUFI‘
Dimensions 199x110x50mm
Type No Output ToI. MN E‘I'fi. PP.
S—150—5 5V, 30A +/—2% 150mV 78% 87
S-150-7,5 7 5V, 20A +/-1% 150mV 80% 87
5-150-9 9V,16.7A +/-1% 180mV 80% 87
S—150—1 2 12V, 12.5A +/—1 % 180mV 82% 87
8-150-15 15V,10A +/-1% 180mV 84% B7
5-150-24 24V, 6.5A +/-1% 240mV 85% 87
8-150-48 48V, 32A +/-1% 240mV 86% 87
54
150 SWITCHING POWER SUPPLY
ALIMENTATORE SWITCHING 8-150
sr‘lt
gmgfimflm
55
Adjustment and tests
Appendix
TEST PROCEDURE
The table below shows the typical technical characteristics of the board used as FM radio transmitter.
The measures have been taken at 98M'Hz frequency
Power supply
1 5Vdc/400rnA
RF Output level
+25dBm (tofidB)
RF Output connector/impedenza
SMB/fiOS).
Attenuation with PLL
Audlo ilmitation circuit
>50dB
ON/OFF
Mono irput
Irput inpechnce
6009 Balanced
Emptasis
FLAT/50us/75us
Frequemy response
40Hz+15kHz (10.3dB)
Distortion
<01%
S/N Weighted CCIR
>78dB
SIN Unwelghted CCIR
>81dB
AM Synchronous
«seas (SBdB
S/N Unweighted CCIR
>73dB
1. RF SECTION
0 Remove the ferrite core from the coil in the oscillator section and check that it is locked (green LED
lit) in all the working range (typically the tension on the varicap at QSMHZ is 4.0V);
0 check the output level of the RF signal, typically 25dBm, in the concerned band (87+108MHZ);
0 adjust the indication of the direct and reflected power by means of the trimmers RCl and RC24
2. MOTHER BOARD (Modulation/limitation circuit)
0 Connect the oscilloscope on the middle point of the jumper J P3;
0 on the MONO input insert a lkHz tone with 2,2Vpp (0dBm@600£2)disable the emphasis (FLAT
response) by removing the two bridges from the jumper P1 and adjust the input attenuator RAS
until 6.8Vpp can be read on the oscilloscope;
0 check the intervention of the limitation circuit in case the input signal increases. Adjustits simmetry
by means of RA36;
0 adjust the frequency deviation to the normal levels (usually +/-75kHz) by means of RA44;
0 characterize the MONO and MPX input by measuring the passing band, distortion, emphasis curve
(50 and 75us) and noise;
0 adjust RBl to improve the distortion;
0 input SCA1-2. Adjust RA22 and RA20 to obtain a +/—75kHz deviation with input 2.2Vpp with a
57kHz tone. Check the frequency response in the band 57+75kl—lz;
0 adjust the deviation indication on me display by means of RC24.
57
MAIN CHARACTERISTICS OF THE FM TRANSMITTERS
‘ The ssgulnnon presumes ins measure In cnmplmnce wun ins recommendnlwn CCIR 45374. “(NIB belween Ih: effechvc value of a 4mm
frequency signal causing a devialion of me Emmet of 175mm and Ihe value of (he residual background noise measured with a quasi—peril
Frequency band of the carrier 3154019qu E7.%108MH1
filameHing wow: "1ka
Devlaxinn £75k"! t75kHl
Pra-emphasls sous 50us
Variatlun ol ins power nos ma
competed lo me mmlml value -3++2$B (~)
Frequemy tolersnm
um: (zappm red. mum)
12ng Arm inlnree monns dam-{z
Splxinus emissions (Pn>25W)
GudBc 9 <1 mw
mask
Ermwmism conditions
Tlmp. 15°45 “7 c
lamp. -5 445 n c (57)
Power supply lemp. mm (5-1)
Temp. 15- u-c
Temp. 0 futon: (6-7) (f)
vaev supply temp. «may. (5-7)
Lim‘lation circui
at nskuzthe devilllon mun not he
moms-d by mammal ms (wka)
for a ads increase of me audio
mask
Low-pass liner
>sudn menu-clan lmwoen
19=1MkHz compared In 15kHl
ADcB anenualion to wkw. >3udB
heynnd IQkHz compared lol5kHz
Warm up
15 animus minimum
20 mmes minimum
Audio irequemy hand
Aon+1skHz
ADHIH 5ka
Frscpercy respmss
audio input
not: with sun. prMmpI-uls
40Hz+15kHz (m 40qu 175mm
21 da oon praenf. suns
AnHleskHz (a 175mm
Frequency Iespmse
MPX mpu
9.0.5dB MIHzLSSKHz
(m MHuTSkHz)
Dmom’un
<1~/a sze-IskHz (no de-ampneolo)
(0.554 4qu+|5kHz (no desmprasisi
s/N Halin‘
ands weighled
zGBdB slereo weighud
27de weignmlumeigued
at coder oupm
Symmnnus AM (due to FM)
S25“. rel suuHx a mkHz
Residual AM (bun and none;
Sl% in [m hand 20H172OkHz
(umeighled)
LVR Crosstalk
245dB lexsfikHz lovlreq.
<100Hz and >5kHz also -odB/uciavs
Mrs Cmss1aii<
zssda
AF Imms
irrped 22m, balanced, Madam
dmerenoe sidE (no emphasis)
Pumllary imuis
deiecim. weighted wins a ccm weigh! filter".
58
madam. unmanned. 5 75ka
111.56 rel 57kHZ
PLLIC - Cali!
LNPUT LEVEL
WNPUT LEVEL
WNPUT LEVEL
mun LEVEL
Jun
BALANCED
MONO wpur
1ELEMEA$HM
CONNECTOR
ma
MPX
— SCAZ
— MONO
PoLszmou
VARICAP
m EMWASIS
ma
; scm
, /
Mom-LAND"
DEVIATION
mu
um
PLL chu<
LED ON
BF LIMWTATION
clnwn
slMMEmv
mu;
LIMWTATION
unculr
JPZ
@ m
Mausm
N “E
me 5 Egg: “9
NW L 35 n w
mam M a;
on L ,m E
pm
a ma
m f f i km
E cEm
N w 1 s an
N m“ U N
m m m P u
T m N m a
mm 5 T a
LN on u cm In
W a mEm E CE
wm xv awn zmm nE
an um I? no mmw
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