Electronika LDMOS UHF SERIES Manual de usuario

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

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

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)

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

1.4FRONTPANEL

2 3 51

1.Functionkeys

2.LCDGraphic Display

3.StatusLEDs

4. RS232 Socket

5.RFMonitorConnector

6.MainSwitch

RS232 for connection

to PC with ERCoS software

and for firmware upgrade

Pin2: TX

Pin3: RX

Pin5: GND

FUSE

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

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

100

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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