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Elettronika
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TXUD1000A
User Manual
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User Manual
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Elettronika TXUD1000A User Manual

LDMOS UHF SERIES
MEDIUM POWER TV AMPLIFIER
User’s manual
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Section 1 - Information
Contents:
1.1 Description
1.3 Technical characteristics
1.4 Front panel
1.5 Rear panel Rear connections
MEDIUM POWER TV AMPLIFIER
SERIES
1.1 DESCRIPTION
The amplifier belongs to the Medium Power Amplifier products family of Television Amplifiers fully in solid state LDMOS technology. These TV Amplifiers operate in the UHF Band with Common amplification process (separate amplification available) of the Video and Audio carriers. This Amplifier family has been designed to offer to the customer high performances, high reliability and greater simplicity in its operation and maintenance procedures. The Video and Audio signal processing is provided for all TV Standards and all types of Audio applications (Mono & Dual Sound - NICAM) together with the different colour systems such as PAL - NTSC - SECAM. Thanks to the amplitude and phase and non linearity pre-correction circuit, it is possible to cancel the distortions in the output stage, thus cutting down the operating costs. Due to the common amplification design, the transmitter is easily upgradeable to any digital TV standard: DVB-T, DVB-H, DMB-T, ATSC. It is only necessary to replace the modulator and the RF output band pass filter, all the other components are used without any change. The cooling system is fully contained into the amplifier, and it is based on forced air flow. A powerful and very low acoustic noise blower is used. A front panel air dust filter is available, sized in order to enable easy replacement. The user interface is based on a graphics display, where all the parameters are showed. A detailed log of events and alarm help the maintenance of the system. The unit can be fully controlled in REMOTE mode via PC direct-link or via PSTN, GSM or Ethernet networks by means of Elettronika Remote Control System. The system can be easily upgraded with dual drive option. Besides, the transmitter can be easily integrated in a 1+1 or more complex N+1 redundancy configurations.
1.2 MAIN FEATURES
- LDMOS Technology;
- Forced-air cooling system;
- Analog and Digital input signal;
- High efficiency;
- Wired and serial remote control (RS232 or RS485);
- All voltages and currents available on display;
- Output filter included.
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1.3 TECHNICAL CHARACTERISTICS
RF SECTION
Analog Operation
Frequency Range ........................................................................................................................................................... UHF
Output Power (±0.5dB) ............................................................................................................................................... 1300W
Amplification Class .......................................................................................................................................................... AB
Gain (±2dB) ....................................................................................................................................................................28dB
Technology .............................................................................................................................................Solid State LDMOS
RF Input Connector ................................................................................................................................................ N Female
Impedance ....................................................................................................................................................................... 50Ω
RF Output Connector (Amplifier / Rack) ........................................................................................... 7/16” Female / EIA 7/8”
Impedance ....................................................................................................................................................................... 50Ω
Digital Operation
Frequency Range ........................................................................................................................................................... UHF
Digital Output Power (DVB-T) .............................................................................................................................300W RMS
Digital Output Power (ATSC) ............................................................................................................................... 500W RMS
DVB-T Modes ......................................................................................................... All the modes listed in ETSI EN 300 744
DVB-T MER ....................................................................................................................................................... > 33dB RMS
DVB-T Shoulders Attenuation (After non-critical mask cavity filter) ................................................................ > 40dB RMS
DVB-T Output Spectrum ............................................................................................................. Compliant ETSI EN 300 744
ATSC Symbol Rate ...................................................................................... 10.76MBaud/s (Compliant to ATSC Doc. A/53)
ATSC SNR ......................................................................................................................................................... > 27dB RMS
ATSC Shoulders Attenuation (After simple mask cavity filter ref. total output power) .....................................> 46dB RMS
ATSC Output Spectrum ......................................................................................................... Compliant to ATSC Doc. A/64
REMOTE CONTROL SECTION
Parallel Interface ........................................................................................................................... ON/OFF, Alarms, Interlock
Serial Interface ............................................................................................................................. RS232 or RS485 Selectable
METERING
Output Forward Power (Peak or RMS) Output Reflected Power (Peak or RMS) Unbalance Power Heat sink Temperature Input Power (Peak or RMS) RF Modules Current Power Supply Voltage Working Timer
INDICATIONS
Cooling Blower Working (With icon on front display) Transmitter Interlock (With icon on front display) Alarm (With red LED on front panel) Transmitter ON/OFF (With green LED on front panel) Remote ON/OFF (With orange LED on front panel)
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PROTECTIONS
Output Forward Power Output Reflected Power Unbalance Power RF Modules Current Power Supply Voltage
PROTECTIONS
Forward Power (Analogue) ......................................................................................................................................... 1500W
Reflected Power (Analogue) .........................................................................................................................................150W
Forward Power (DVB-T) ................................................................................................................................................400W
Reflected Power (DVB-T) ............................................................................................................................................... 40W
Forward Power (ATSC) ................................................................................................................................................. 600W
Reflected Power (ATSC) ................................................................................................................................................ 60W
Unbalance (Analogue) ..................................................................................................................................................300W
Unbalance (DVB-T) .......................................................................................................................................................100W
Unbalance (ATSC) ........................................................................................................................................................150W
Temperature ................................................................................................................................................................... 75°C
.......................................................................................................................................................................................................................................................................................................................
I
DC
.......................................................................................................................................................................................................................................................................
V
DC
Min 10V - Max 33.5V
18A
GENERAL
Power Supply Voltage ............................................................................................................................................. 90 - 260V
Power Supply Frequency ........................................................................................................................................ 50 - 60Hz
Power Factor .................................................................................................................................................................> 0.98
Analog Power Consumption (Black) ......................................................................................................................... 3.45kVA
Digital Power Consumption (DVB-T) .......................................................................................................................... 2.2kVA
Digital Power Consumption (ATSC) ...........................................................................................................................2.5kVA
Housing (Amplifier / Rack) ...................................................................................................................................... 6U / 20U
Weight (Amplifier / Rack) ................................................................................................................................... 63kg / 175kg
Airflow ............................................................................................................................................ From 330m3/h to 500m3/h
Temperature ..................................................................................................................................................... -5°C to +45°C
Options
- Non critical mask, DVB-T, Output filter
- Critical mask, DVB-T, Output filter
- Stringent emission mask, ATSC, Output filter
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1.4 FRONT PANEL
2 3 51
64
1. Function keys
2. LCD Graphic Display
3. Status LEDs
4. RS232 Socket
5. RF Monitor Connector
6. Main Switch
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RS232 for connection
to PC with ERCoS software
and for firmware upgrade
Pin 2: TX Pin 3: RX Pin 5: GND
1.6 REAR PANEL
1
1
4
3
FUSE
FUSE
FUSE
3
2
4
5 97 8
4
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1. Breaker
2. AC 220V OUT Socket
3. AC 400V IN Socket
41. FAN 3.15A Fuse
42. CONTROL BOARD 1A Fuse
43. EXCITER 4/8A Fuse
5. RF IN Connector
6. RS485 Socket
7. EXCITER Socket
8. TELEMEASURES Socket
9. RF OUT Connector
Wired Telemeasures connector
Pin 1: FWD power (Analog out) Pin 2: REF power (Analog out) Pin 3: Temperature (Digital out) Pin 4: Interlock (Digital in) Pin 5: GND Pin 6-7: Free contact (Digital out)
Closed when Alarm Pin 8: 0V=ON / 5V=Normal (Digital in) Pin 9: 0V=OFF / 5V=Normal (Digital in)
EXCITER for connection
to Driver Module
Pin 1: GND Pin 2: 0V=Normal / 5V=AGC Alarm
(Digital out)
Pin 3: 0V=Normal / 5V=AGC Alarm
(Digital out) Pin 8: FWD power (Analog out) Pin 9: REF power (Analog out)
RS485 for connection
to RCU or Amplifier Control
Pin 2: RX- Pin 5: GND Pin 3: RX+ Pin 7: TX­Pin 4: +5V Pin 8: TX+
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Section 2 - Installation
Contents:
2.1 Operating environment
2.2 First installation
2.3 Connection with VEGA Transmitter
2.4 Stand-alone Amplifier configuration in Dual Drive version
2.5 Slave multi-Amplifier configuration with Amplifier Control
2.6 Stand-alone Amplifier configuration with Elettronika RCU
2.7 Stand-alone Amplifier configuration with direct PC connection
2.1 OPERATING ENVIRONMENT
You can install the equipment 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. Do not locate the equipment directly above a hot piece of device. The upper lid can be dismounted to allow an easy internal access. The equipment is designed with a modular design, that is each circuit is realized inside different modules or boards. All interconnections between modules are made by means of connectable cables which allow an easy and quick maintenance of demaged modules.
2.2 FIRST INSTALLATION
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.
RF INPUT
To ELECTRIC NETWORK
AC 400V IN
AGC
To ANT EN NA
To EXC I T E R
BREAKER
AC 200V OUT
RF OUT
RF IN
RS485 TELEMEASURES
1. Connect Power Supply cable of the Exciter to the Auxiliary Socket on the rear panel of the Amplifier;
2. connect the Power Supply cable of the Amplifier to the electric network (230VAC Monophase or 400VAC Threephase); if present the Isolator Transformer, the Amplifier is provided with cable and plug;
3. connect the RF OUT Exciter cable to the RF IN connector on the rear panel of the Amplifier;
4. connect the Antenna cable to the RF OUT connector on the rear panel of the Amplifier.
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When the equipment is put within a combined system it is directly connected to the input splitting and output combining systems. Before fully powering the equipment, 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 watts might be shown as Reflected Power.
2.3 CONNECTION WITH VEGA TV TRANSMITTER
TV AMPLIFIER VEGA
To ELECTRIC NETWORK
BREAKER
AC 400V IN
AC 200V OUT
RF OUT
RF IN
RS485 TELEMEASURES
AGC
1
2
8
5
8
4
To AN TE NN A
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2.4 STAND-ALONE AMPLIFIER CONFIGURATION IN DUAL DRIVE VERSION
VIDEO
19kHz
LEFT IN
GND
LEFT MAIN
AUXMAIN
OUT
LEFT AUX OUT
RIGHT IN
OUT
IN
DIRECT REMOTE
MAIN CTRL
MAIN
MAIN RIGHT MAIN OUT
RIGHT AUX OUT
OUT
IN
AUX
IN
AUX CTRL
REMOTE
AUX
RS232/485
OUT
RF AUX IN RF OUT RF MAIN IN
BREAKER
AC 400V IN
AGCRS485 TELEMEASURESRF IN
AC 200V OUT
To AN TENNA
RF OUT
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2.5 SLAVE MULTI-AMPLIFIER CONFIGURATION WITH AMPLIFIER CONTROL
From SPLITTER
To COMBINER
BREAKER
AC 400V IN
AC 200V OUT
RF OUT
RF IN
AMPLIFIER CONTRO L AMPLIFIER
2
2
3
3
5
5
7
7
8
8
AGCRS485 TELEMEASURES
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2.6 STAND-ALONE AMPLIFIER CONFIGURATION WITH ELETTRONIKA RCU
AC 400V IN
AGCRS485 TELEMEASURESRF IN
BREAKER
AC 200V OUT
RF OUT
2.7 STAND-ALONE AMPLIFIER CONFIGURATION WITH DIRECT PC CONNECTION
SERIAL PORT
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Section 3 - Operation
Contents:
3.1 Operation
3.2 Display
3.3 Menus
3.4 Firmware upgrade
3.1 OPERATION
At startup, after initial image, the display shows the main screen with the RF powers as below:
The user may turn on and off the amplifier by means of the switch on the front panel. The control board turns on all the power supplies, the exciter (if any), and internal cooling fans. While the amplifier is working, the micro-controller monitors continuously the most important parameters: power supply voltages, absorbed currents, high power zone temperature, forward and reflected powers, unbalances (if any). Each measure is associated to a maximum threshold beyond which the amplifier is immediately put in protection status by turning off one or more power supply, depending on the failed block. In order to prevent a temporary problem to trigger a definitive protection status, the failed block is turned on again, after some seconds, for up to five times. If it goes beyond the protection threshold for more than five times, it is declared as FAILED and it will no longer be turned on. In this case, the amplifier will have to be turned off manually by means of the switch on the front panel, then turned on again after performing the needed maintenance. On the front panel there are also three LEDs labelled ON, REMOTE and ALARM. Their meanings are explained in Table 1.
LED COLOUR MEANING MEANING WHEN BLINKING
The amplifier has been turned on
ON Green The amplifier is on
REMOTE Yellow
ALARM Red An alarm is present It never blinks
Table 1: Meanings of the three LEDs on the front panel
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Screenshots in this manual are indicative, so they can be different from those on your equipment.
Remote control is enabled
locally but it has been turned off by remote
It neve r b li nk s
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