Electronika LDMOS UHF SERIES Manual de usuario
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LDMOS UHF SERIES
MEDIUM POWER TV AMPLIFIER
User’s manual
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Section 1 - Information
Contents:
1.1 Description
1.2 Main Features
1.3 Technical characteristics
1.4 Front panel
1.5 Rear panel
Rear connections
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1.1DESCRIPTION
Theamplifierbelongsto theMedium PowerAmplifierproducts familyofTelevisionAmplifiersfullyinsolid
stateLDMOStechnology.
TheseTVAmplifiersoperateintheUHFBandwithCommon amplificationprocess(separateamplification
available)oftheVideo andAudiocarriers.ThisAmplifierfamily hasbeendesigned tooffer tothecustomer
highperformances, highreliability andgreater simplicityin itsoperation andmaintenance procedures.
TheVideoandAudiosignalprocessing isprovidedforallTVStandardsandall typesofAudioapplications
(Mono&DualSound- NICAM)togetherwith thedifferentcoloursystemssuchas PAL-NTSC -SECAM.
Thankstotheamplitudeandphaseandnonlinearitypre-correctioncircuit,itispossibletocancelthedistortions
intheoutput stage,thuscutting downtheoperatingcosts.
Duetothecommon amplification design, thetransmitteriseasilyupgradeable to anydigitalTVstandard:
DVB-T, DVB-H,DMB-T,ATSC.It isonlynecessary toreplacethemodulatorandtheRF outputbandpass
filter,allthe othercomponentsareusedwithoutanychange.
Thecoolingsystemisfullycontainedintotheamplifier,anditisbasedonforcedairflow.Apowerfulandvery
low acoustic noise blower is used.Afront 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.Adetailed log of
eventsandalarmhelpthe maintenanceofthe system.
TheunitcanbefullycontrolledinREMOTEmodeviaPCdirect-linkorviaPSTN,GSMorEthernetnetworks
bymeansofElettronikaRemoteControlSystem.
Thesystemcan beeasilyupgraded withdualdrive option.
Besides,thetransmitter canbeeasily integratedina1+1 ormorecomplex N+1redundancyconfigurations.
1.2MAINFEATURES
- 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.
MEDIUM POWER TV AMPLIFIER
SERIES
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1.3TECHNICALCHARACTERISTICS
RFSECTION
- Analog Operation
Frequency Range ........................................................................................................................................................... UHF
OutputPower (±0.5dB) ............................................................................................................................................... 1300W
Amplification Class .......................................................................................................................................................... AB
Gain(±2dB) ....................................................................................................................................................................28dB
Technology .............................................................................................................................................Solid State LDMOS
RF Input Connector ................................................................................................................................................ NFemale
Impedance....................................................................................................................................................................... 50Ω
RF Output Connector (Amplifier / Rack) ........................................................................................... 7/16”Female/EIA7/8”
Impedance....................................................................................................................................................................... 50Ω
- Digital Operation
Frequency Range ........................................................................................................................................................... UHF
DigitalOutputPower(DVB-T) .............................................................................................................................300WRMS
Digital Output Power (ATSC)...............................................................................................................................500WRMS
DVB-TModes......................................................................................................... Allthe modes listedinETSIEN 300 744
DVB-TMER .......................................................................................................................................................>33dBRMS
DVB-T ShouldersAttenuation (After non-critical mask cavity filter) ................................................................> 40dB RMS
DVB-T OutputSpectrum .............................................................................................................CompliantETSIEN300744
ATSCSymbol Rate ...................................................................................... 10.76MBaud/s (ComplianttoATSCDoc.A/53)
ATSCSNR .........................................................................................................................................................>27dBRMS
ATSC ShouldersAttenuation (After simple mask cavity filter ref. total output power) .....................................>46dBRMS
ATSC Output Spectrum ......................................................................................................... ComplianttoATSC Doc.A/64
REMOTECONTROLSECTION
ParallelInterface........................................................................................................................... ON/OFF,Alarms, Interlock
SerialInterface ............................................................................................................................. RS232orRS485Selectable
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
WorkingTimer
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
ForwardPower(DVB-T)................................................................................................................................................400W
ReflectedPower(DVB-T) ............................................................................................................................................... 40W
ForwardPower (ATSC) .................................................................................................................................................600W
ReflectedPower (ATSC) ................................................................................................................................................ 60W
Unbalance (Analogue)..................................................................................................................................................300W
Unbalance(DVB-T).......................................................................................................................................................100W
Unbalance (ATSC) ........................................................................................................................................................150W
Temperature ................................................................................................................................................................... 75°C
IDC ....................................................................................................................................................................................................................................................................................................................... 18A
VDC ....................................................................................................................................................................................................................................................................... Min10V-Max33.5V
GENERAL
Power Supply Voltage ............................................................................................................................................. 90-260V
Power Supply Frequency ........................................................................................................................................ 50-60Hz
Power Factor .................................................................................................................................................................>0.98
Analog Power Consumption (Black) ......................................................................................................................... 3.45kVA
DigitalPowerConsumption (DVB-T) ..........................................................................................................................2.2kVA
DigitalPower Consumption (ATSC) ...........................................................................................................................2.5kVA
Housing(Amplifier / Rack) ...................................................................................................................................... 6U/20U
Weight (Amplifier/Rack)................................................................................................................................... 63kg/175kg
Airflow ............................................................................................................................................From330m3/hto500m3/h
Temperature ..................................................................................................................................................... -5°Cto +45°C
Options
- Non critical mask, DVB-T, Output filter
- Critical mask, DVB-T, Output filter
- Stringent emission mask, ATSC, Output filter
1AUTV/500LD, 2AUTV/1000LD, 3AUTV/1500LD
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1.4FRONTPANEL
2 3 51
1.Functionkeys
2.LCDGraphic Display
3.StatusLEDs
4. RS232 Socket
5.RFMonitorConnector
6.MainSwitch
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RS232 for connection
to PC with ERCoS software
and for firmware upgrade
Pin2: TX
Pin3: RX
Pin5: GND
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FUSE
FUSE
FUSE
1
1.6REARPANEL
1. Breaker
2.AC 220V OUT Socket
3.AC 400V IN Socket
41. FAN 3.15AFuse
42.CONTROLBOARD1AFuse
43.EXCITER 4/8A Fuse
5. RF IN Connector
6. RS485 Socket
7.EXCITERSocket
8.TELEMEASURESSocket
9. RF OUT Connector
62 35 97 8
Wired Telemeasures connector
Pin1: FWD power (Analog out)
Pin2: REF power (Analog out)
Pin3: Temperature (Digital out)
Pin4: Interlock (Digital in)
Pin5: GND
Pin6-7:Free contact (Digital out)
Closed when Alarm
Pin8: 0V=ON / 5V=Normal (Digital in)
Pin9: 0V=OFF / 5V=Normal (Digital in)
EXCITERforconnection
to Driver Module
Pin1: GND
Pin2: 0V=Normal / 5V=AGCAlarm
(Digital out)
Pin3: 0V=Normal / 5V=AGCAlarm
(Digital out)
Pin8: FWD power (Analog out)
Pin9: REF power (Analog out)
RS485 for connection
to RCU orAmplifier Control
Pin2: RX- Pin5: GND
Pin3: RX+ Pin7: TX-
Pin4: +5V Pin 8: TX+
4243
41
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Section 2 - Installation
Contents:
2.1 Operating environment
2.2 First installation
2.3 Connection with VEGATransmitter
2.4Stand-aloneAmplifier configurationin DualDrive version
2.5Slavemulti-Amplifier configurationwithAmplifier Control
2.6Stand-aloneAmplifier configurationwith ElettronikaRCU
2.7 Stand-aloneAmplifier configuration with direct PC connection
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2.1OPERATINGENVIRONMENT
Youcan installtheequipment inastandardcomponentrackoronasuitablesurface suchasa benchordesk.
Inanycase,theareashouldbeascleanandwell-ventilatedaspossible.Donotlocatethe equipmentdirectly
aboveahotpieceofdevice.Theupperlidcanbedismountedto allowaneasyinternalaccess.Theequipment
is designed with a modular design, that is each circuit is realized inside different modules or boards.All
interconnectionsbetweenmodulesaremade bymeansof connectablecableswhichallowan easyandquick
maintenanceof demagedmodules.
2.2FIRSTINSTALLATION
Correctinstallationoftheequipmentisimportantformaximumperformanceandreliability.Antennaandearth
connectionsmustbeinstalledwiththegreatestcare.Theequipmentadjustmentisn’tneed, becausetheunitis
completelyadjustedbyourtechnicalstaff.
1.ConnectPower Supplycableofthe ExcitertotheAuxiliarySocketonthe rearpaneloftheAmplifier;
2.connectthePowerSupplycableoftheAmplifiertotheelectricnetwork(230VACMonophaseor400VAC
Threephase);ifpresent theIsolatorTransformer,theAmplifieris providedwithcable andplug;
3.connecttheRFOUTExcitercabletotheRF IN connectorontherearpanelof theAmplifier;
4.connecttheAntennacabletotheRF OUTconnectoron the rearpaneloftheAmplifier.
AGC
BREAKER
AC 200V OUT
RF IN RS485 TELEMEASURES
AC 400V IN
RF OUT
To ANTENNA
To ELECTRIC NETWORK
To EXCITER
RF INPUT
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