Elenos ETG300 Operating instructions
ETG300
ETG300DR
ETG250
ETG250DR
USER AND MAINTENANCE MANUAL
TECHNICAL
ANNEX
Via G. Amendola 9 - 44028 Poggio Renatico (FE) - Italy
Phone. +39 0532 829 965 - Fax +39 0532 829 177
E-Mail: [email protected]
Internet address: www.elenos.com
Edition 1
Rev. 1 - 14/05/2001
Cod. MAN0075
BROADCAST EQUIPMENT COMPANY
Use and maintenance manual
Page 2 Engineering Department PHONE: +39 0532 829 965 - FAX: +39 0532 829 177
E-Mail: [email protected]
Firstly, thank you for choosing an product.
products are solid state or thermionic tube transmitters that develop power
from a minimum of 20W to a maximum of 30KW.
Great care has been taken during the design of the protection circuitry to ensure compa-
tability with products from other manufacturers. However the best performance is achie-
ved when the equipment is used with other products manufactured by .
The unit has been designed to guarantee consistent performance over time, without the
need for special maintenance. The need for this is minimised by regular functional checks
of those components which are ventilated.
Operation of the unit is very easy and intuitive. Even so it is recommended that this manual
and other relevant documentation is read carefully before any operation is attempted.
Dear User,
Customer Care
Use and maintenance manual
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Engineering Department PHONE: +39 0532 829 965 - FAX: +39 0532 829 177
E-Mail: [email protected]
INDEX
CONTENTS
1. GENERAL
1.1. Front View...................................................................................Page 5
1.1.1. Front panel description.......................................................Page 5
1.2. Rear View....................................................................................Page 7
1.2.1. Rear panel description........................................................Page 7
2. INSTALLATION......................................................................................Page 9
3. USER INSTRUCTIONS
3.1. User interface..............................................................................Page 10
3.2. Telemetry connection and operation ..............................................Page 11
3.3. Powering up ................................................................................Page 13
3.4. Description of the graphics interface, setup and measurement
3.4.1. Main menu .......................................................................Page 14
3.4.2. Functions menu .................................................................Page 15
3.4.3. Audio menu - Input signal level adjustment ..........................Page 16
3.4.4. RF menu - Output power adjustment ...................................Page 17
3.4.5. Frequency menu - Frequency programming..........................Page 18
3.4.6. User setup menu................................................................Page 19
3.4.7. Timer display .....................................................................Page 20
3.4.8. RDS menu - RDS adjustment and programming (optional) .....Page 21
3.4.9. Deviation e Statistics menu .................................................Page 25
3.4.10. RDS encoder programming ................................................Page 27
3.5. Checking performance.................................................................Page 39
4. GENERAL DESCRIPTION
4.1. Introduction.................................................................................Page 41
4.2. Using the block diagram ..............................................................Page 41
4.3. Block diagram
4.3.1. Transformer version............................................................Page 43*
4.3.2. Switch-mode version ..........................................................Page 45*
4.4. Power supply section ....................................................................Page 47
4.4.1. Services ............................................................................Page 47
4.4.2. Power
4.4.2.1. Switch-mode version .....................................................Page 47
4.4.2.2. Transformer version.......................................................Page 48
4.5. Radio frequency section ...............................................................Page 48
4.5.1. Driver ...............................................................................Page 48
4.5.2. RF module ........................................................................Page 49
4.5.3. Low-pass filter ...................................................................Page 49
4.5.4. Probe
4.5.4.1. Output power measurement ..........................................Page 49
4.5.4.2. AGC protection............................................................Page 49
4.6. Logic (Mother board) ...................................................................Page 50
4.6.1. CPU board........................................................................Page 50
4.6.2. ALC board ........................................................................Page 50
4.6.3. VCO/PLL board.................................................................Page 50
4.6.4. MPX board ........................................................................Page 50
4.7. Keyboard ....................................................................................Page 50
4.8. Optional boards..........................................................................Page 51
4.8.1. Stereo input board .............................................................Page 51
4.8.2. Stereo encoder board ........................................................Page 52
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INDEX
4.8.3. RDS board ........................................................................Page 53
5. ELECTRICAL SCHEMATICS
5.1. Auxiliary power supply
5.1.1. Layout...............................................................................Page 57
5.1.2. Schematic .........................................................................Page 59*
5.1.3. Parts list ............................................................................Page 61
5.2. Switching power supply
5.2.1. Layout...............................................................................Page 63
5.2.2. Schematic .........................................................................Page 65*
5.2.3. Parts list ............................................................................Page 67
5.3. Mother board
5.3.1. Layout...............................................................................Page 71*
5.3.2. Schematics
5.3.2.1. VCO ...........................................................................Page 73*
5.3.2.2. PLL ..............................................................................Page 75*
5.3.2.3. MPX ............................................................................Page 77*
5.3.2.4. AGC and SWR protection..............................................Page 79*
5.3.2.5. CPU ............................................................................Page 81*
5.3.3. Parts list ............................................................................Page 83
5.4. Keyboard
5.4.1. Layout...............................................................................Page 93
5.4.2. Schematic .........................................................................Page 95*
5.4.3. Parts list ............................................................................Page 97
5.5. Driver
5.5.1. Layout...............................................................................Page 99
5.5.2. Schematic .........................................................................Page 100
5.5.3. Parts list ............................................................................Page 101
5.6. RF final output stage
5.6.1. Layout...............................................................................Page 103
5.6.2. Schematic .........................................................................Page 104
5.6.3. Parts list ............................................................................Page 105
5.7. LP filter
5.7.1. Layout...............................................................................Page 107
5.7.2. Schematics
5.7.2.1. Directional coupler .......................................................Page 108
5.7.2.2. Directional coupler amplifier..........................................Page 109
5.7.2.3. Low-pass filter ..............................................................Page 110
5.7.3. Parts list ............................................................................Page 111
5.8. Input output combiner system
5.8.1. Schematic .........................................................................Page 113
5.9. BUS board
5.9.1. Layout...............................................................................Page 115
5.9.2. Schematic .........................................................................Page 116
5.9.3. Parts list ............................................................................Page 117
5.10. Thermal probe
5.10.1. Layout...............................................................................Page 119
5.10.2. Schematic .........................................................................Page 119
5.10.3. Parts list ............................................................................Page 120
6. TROUBLESHOOTING ...........................................................................Page 121
7. TECHNICAL SPECIFICATION .................................................................Page 123
Page numbers marked with an asterisk (*) are in A3 format
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1. GENERAL
1 5432 6
1.1.
Front view
1) Power on switch
2) Switches for programming operation
3) Led: “ON AIR” lit, indicates the PLL has reached the desired frequency
“FAILURE” lit, indicates the output power is below the preset threshold
“MAINS” lit, indicates the unit is switched on
4) The “RF monitor” connector provides an RF monitor signal
5) The “MPX OUT” connector provides an audio signal
6) Display
N.B.
Do not obstruct the ventilation grills
1.1.1.
Front Panel description
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1. GENERAL
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1. GENERAL
1 5
43
2 6 7 8 9 10 11 12
13
15
14
1.2.
Rear view
1.2.1.
Rear Panel description
1) “RF OUT” connector
2) Earthing terminal
3-4) Power supply fuse (10A)
5) Line supply socket
6) Analog signal interface
7) Telemetry interface
8) “MPX” input connector
9) “SCA2” input connector
10) Trimmer for calibrating the “SCA2” input
11) “SCA1” input connector
12) Trimmer for calibrating the “SCA1” input
13) Slot for inserting the stereo encoder board
14) Slot for inserting the RDS board
15) Slot for inserting the stereo inputs board
N.B.
Do not obstruct the ventilation grills
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E-Mail: [email protected]
1. GENERAL
Use and maintenance manual
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Engineering Department PHONE: +39 0532 829 965 - FAX: +39 0532 829 177
E-Mail: [email protected]
2. INSTALLATION
2.
Installation
Remove the unit from its packaging and before attempting any operation, check
that the unit has not been damaged during transport and that all the switches and con-
nectors located on the front and rear panels are serviceable.
Install the unit so that it is accessible from all sides
Ensure that the location of the unit allows for connection to an efficient earthing point
Ensure that the antenna system is suitable
Check that any amplifier to be eventually connected downstream is connected to the
antenna system
Connect the appropriate inputs of the exciter according to the type of operation requi-
red:
the monophonic signal to the XLR connector on the mono board
the stereo signal (low frequency) to the left and right XLR connectors on the stereo
input board
the stereo signal (wide-band) to the MPX connector on the MPX and SCA inputs
board
the RDS signal to one of the two SCA connectors on the MPX and SCA inputs
board
If the RDS board is fitted, the wide-band stereo signal goes directly to the MPX
inputs on the RDS board, so the MPX+RDS output will be connected to the MPX
input on the MPX and SCA inputs board.
Connect the electricity supply cable
Connect the RF output to the input of any amplifier to be used, or to the antenna
system
Switch on the amplifier (if present)
In order to verify that the equipment is functioning correctly, check the values displayed
by the exciter and amplifier displays and instrumentation
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E-Mail: [email protected]
3. USER INSTRUCTIONS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
IN1 = SB_ON
IN2 = SB_OFF
GND
GND
IN3 = VDS 5V.F.S.
IN4 = IDRAIN 5V.F.S.
NC
IN5 = LOCK REM.
IN6 = +5V. REM.
IN7 = RPW REM.
IN8 = CUR REM.
IN9 = IPW REM.
IN10 = V. REF. REM.
GND
GND
NC
GND
IN11 = STAND-BY
IN12 = REF. PWR 1V.F.S.
IN13 = DIR PWR 3.6V.F.S.
IN14 = TMP REM.
IN15 = VPW REM.
IN16 = FPW REM.
IN17 = -12V. REM.
IN18 = +12V. REM.
3.1.
User interface
The user interface is designed to accept upto 14 analog signals in the range 0 to
2V. For example, it is possible to read a remote temperature, remote voltages and currents
of other equipment and direct and reflected power of other equipment.
Pins with an “IN” prefix are inputs
Pins with an “NC” prefix are not connected
Pins with a “GND” prefix are earths
To enable external RF OFF function (stand by) after having switched on the device, during
countdown, press P2 and P7 at the same time, enter the password (2222, press P2 four
times) enable “EXT RF OFF” and save the new configuration.
This manual suits for next models
3
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