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LDMOS - UHF TV AMPLIFIER

AUTV/1500LD

Users manual

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Summary of Contents for AUTV/1500LD

Page 1: ...50 LDMOS UHF TV AMPLIFIER AUTV 1500LD User s manual All manuals and user guides at all guides com a l l g u i d e s c o m ...

Page 2: ...51 This page is intentionally blank All manuals and user guides at all guides com ...

Page 3: ...________________________________________________________________________________________ Section 1 Information Contents 1 1 Description 1 2 Technical characteristics All manuals and user guides at all guides com ...

Page 4: ...rocedures The amplifiers modules employ all solid state LDMOS technology in order to obtain high gain wide band performances very good linearity reliability and high efficiency The equipment design allows the soft degradation RF power loss for several transistor faulty in fact the outputcombinerusesRFpowerresistorsforunbalancingpowerdissipation Theunitisenclosedinacabinet for 19 6U rackmounting AU...

Page 5: ...c 10 50 60Hz 400Vac 3P N on request Power consumption 3400VA at black level RS232 Socket DB9 Connector on front panel RS485 Socket DB9 Connector on rear panel Telemeasuring socket DB9 Connector on rear panel AGC Socket DB9 Connector on rear panel Power factor 0 9 Ambient temperature 5 to 45 C Relative humidity 20 90 Altitude Up to 2 500 meters Cooling Forced air Cabinet Rack19 6U Dimensions 760x26...

Page 6: ...55 This page is intentionally blank All manuals and user guides at all guides com a l l g u i d e s c o m ...

Page 7: ...___________________ Section 2 Installation Contents 2 1 Operating environment 2 2 Preliminary operations 2 3 Telemeasuring socket connections 2 4 RS232 RS485 and AGC socket connections 2 5 Preventive maintenance Front panel Rear panel All manuals and user guides at all guides com ...

Page 8: ...stalledwiththegreatestcare Theequipmentadjustmentisn tneed becausetheunitis completelyadjustedbyourtechnicalstaff Thisistheinstallationprocedure 1 connect the 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 If there is the Isolator Transformer theamplifierisprovidedwithcabl...

Page 9: ...an be slowly increased At maximum output power some watts might be shown as reflected power 2 3 TELEMEASURING SOCKET CONNECTIONS DB9 Socket 2 4 RS232 RS485 AND AGC SOCKET CONNECTIONS PIN N SIGNAL TYPE IN OUT FUNCTION 1 Analog Output FWD Power 2 Analog Output REF Power 3 Digital Output Temperature 4 Digital Input Interlock 5 GND 6 7 Digital Output Free contact closed when alarm 8 Digital Input 0V O...

Page 10: ...us functioning of the front panel controls 3 if the apparatus has not been used for a long period of time combined with exposure to extreme environ mentalconditions opentheunitandmakeavisualinspection Remove salt water or ice with a moist cloth before turning the apparatus on Check that the cooling fans are runningfreely 4 for general maintenance and top performance call an authorized service tech...

Page 11: ...0 Front panel 1 2 3 4 5 6 DESCRIPTION 1 LCD Display 2 Function keys 3 Status LEDs 4 RF Monitor connector 5 Main switch 6 RS232 Socket All manuals and user guides at all guides com a l l g u i d e s c o m ...

Page 12: ... 4 5 6 9 8 7 DESCRIPTION 1 Breaker 2 Power supply socket 3 Auxiliary socket 4 Fuse 5 RS485 Socket 6 AGC Socket 7 Telemeasure socket 8 RF Input connector 9 RF Output connector All manuals and user guides at all guides com ...

Page 13: ...______________________________________________________________________________________________ Section 3 Operation Contents 3 1 Operation 3 2 Display 3 3 Menus All manuals and user guides at all guides com ...

Page 14: ...itive protection status the failed block is turned on again after some seconds for up to five times Ifitgoesbeyondtheprotectionthresholdformorethanfivetimes itisdeclaredasFAILEDanditwill nolongerbeturnedon Inthiscase theamplifierwillhavetobeturnedoffmanuallybymeansoftheswitchon thefrontpanel thenturnedonagainafterperformingtheneededmaintenance On the front panel there are also three LEDs labelled ...

Page 15: ...nksiftherehasbeenanalarmwhichhasended but has not yet been seen by the user It stops blinking once the Log has been checked Theinterlocksymbolisdisplayedonlywhenthisfunctionisenabled Itmaybeeitheracloselock asinFigure 3 when there is no alarm interlock chain closed or an open lock in case of alarm interlock chain open Since the status bar is always showed on the display regardless of the screen th...

Page 16: ...row on the right open sub menus when chosen Thus there is a hierarchical structure as in Figure 5 Togo back from a sub menu to the previous menu press the ESC key If the ESC key is pressed in the main menu the RF powers screen is accessed Figure 5 Hierarchical menu structure Allmenuitemsaredescribedindetailbelow All manuals and user guides at all guides com a l l g u i d e s c o m ...

Page 17: ...Power supply screen Log Alarms ThecontrolboardisprovidedwithanexternalEEPROMandaclock Anyalarmorswitchingeventwiththe time at which it occurred is saved in the EEPROM The Log Alarms sub menu allows to manage this log It is possible to see the events stored in the log by selecting Log Alarms View Log Alarms All events canbescrolledbypressingtheUPandDOWNkeys Forexample theeventshowninFigure7isthetur...

Page 18: ...imer has been enabled Working Timer Timer Reset resets the timer Thresholds This is a screen showing the alarm threshold of each signals monitored by the control board The list can be scrolled by means of the UP and DOWN keys EVENT DESCRIPTION Local ON Amplifier turned on by means of the local switch Local OFF Amplifier turned off by means of the local switch Remote ON Amplifier turned on remotely...

Page 19: ...ange made press the ESC key Figure 8 shows an example of this screen Figure 8 Date and time setting screen Display ThemenuentrySettings Display allows to change some settings of the display such has back light contrast and screensaver The back light and the contrast are set by means of the UP and DOWN arrow keys The changes made are saved by pressing the RET key or discarded pressing the ESC key F...

Page 20: ...alone mode or set a slave address by means of the UP and DOWN arrow keys ThechangesmadearesavedbypressingtheRETkeyordiscardedpressingtheESCkey Anexampleofthis screen is shown in Figure 10 Figure 10 Slave address setting screen Remote Theamplifiermaybecontrolledeitherlocally bymeansofthekeysanddisplay orremotely Therearethree possibilitiesforremotecontrol using a direct serial connection between am...

Page 21: ... no alarm or open if it is open alarm Firmware Release ThemenuentrySettings Firmware Release allows to display the firmware version number and the hardwarereleaseoftheamplifier Serial Number ThemenuentrySettings Serial Number allows to display the serial number of the apparatus All manuals and user guides at all guides com a l l g u i d e s c o m ...

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Page 23: ...iagram AUTV 1500LD Component layout RF Section Block Diagram MTF0070BR0 Amplifier module Component list SCH0192AR0 200W UHF LDMOS Amplifier module SCH0223AR1 Control board and display SCH0221AR1 Amplifier interface SCH0215AR0 Mains distribution board E0026 1kW 32Vdc Switching power supply All manuals and user guides at all guides com ...

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Page 26: ...75 All manuals and user guides at all guides com a l l g u i d e s c o m ...

Page 27: ...T0726 DET0726R2SIDEx1500WUHFAMP MOD 2 DET0727 DET0727R1INTERNALFRONTSIDExAMP MOD 1 DET0728 DET0728R4INTERNALSIDExAMP MOD 2 DET0729 DET0729R2FRONTSIDExAMP MOD 1 DET0730 DET0730R2REARSIDExAMP MOD 1 DET0732 DET0732R1CONNECTIONSSUPPORTBOARD 1 DET0734 DET0734R0COVERxAMPLIFIERMODULEP 2634 1 DET0736 DET0736R5HEATSINKxAMPLIFIERMODULE 1 DET0807 DET0807R3SCREENDIR COUPLERMODULE 1 DET0810 DET0810R0PART xDIRE...

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Page 29: ...scircuit protectioncircuitand matchingnetworks AsilverplatedcopperplateisbrazedwithPCBinordertoobtainlowthermalresistance Providingaminimumof200WPksynclinearpower thismoduleistheperfectamplifierforanybroadband UHF power transmitter TECHNICALCHARACTERISTICS Output power 300Wmax Input power 15Wmax Frequency 470 860MHz Gain 13dB LDMOS Power supply 32V 2 LDMOS Bias current 32V Vdc 2A RF Input impedanc...

Page 30: ...dB Compare to the typical curve eclosed Adjustment procedure Polarisationcurrentcalibration 32Vstabilisedpowersupply 10A amperometer Gaincurve Network analyser Adjustment points description R7 R8 Trimmers Adjust the current absorbed in stand by 1 0A per device Middle frequency 660MHz span 500MHz 2dB div reference to the arrow Curve response graphic All manuals and user guides at all guides com ...

Page 31: ...EP3 Check the work of the protections Set both trimmers so that there is a value of about 4 5V on the pads of the gates solder some wire to the pad between the two LEDs next to the serigraphy of the input hybrid H1 in order to check the work of the protections aboard a power of about 4V has to be supplied to the wire for example by touching with it the reophore of C23 or C24 which is not connected...

Page 32: ...ck the response curve of the module by means of thenetwork analyser STEP 10 Check the response curve for low signal with centre 660MHz and span 500MHz 2dB div STEP 11 The curve should be similar to the one enclosed with a tolerance of 0 5dB To obtain this act on the four trimmers C41 C41a and C42 C42a with the proper calibrator inorder to flatten the curve as much as possible especially at the edg...

Page 33: ...82 Component layout SCH0192AR0 All manuals and user guides at all guides com ...

Page 34: ...83 All manuals and user guides at all guides com ...

Page 35: ... 3 9W1 4W1206SMDRESISTOR 00012A R22 3 9W1 4W1206SMDRESISTOR 00012A R23 1000W1W2512SMDRESISTOR 00396 R24 1000W1W2512SMDRESISTOR 00396 R25 R15 da montare se si inverte l ingresso R26 R26 da montare se si inverte l uscita C1 470uF50VPTHELECTROLYTICCAPACITOR 01807B C2 470uF50VPTHELECTROLYTICCAPACITOR 01807B C3 470uF50VPTHELECTROLYTICCAPACITOR 01807B C4 100uF50VPTHELECTROLYTICCAPACITOR 01795 C5 100uF50...

Page 36: ...1143 C39 4 7pFATC100BCAPACITOROREQUIVALENT 01108 C40 4 7pFATC100BCAPACITOROREQUIVALENT 01108 C41x2 2x1 5pFJOHANSONSMDTRIMMER 1485 C42x2 2x1 5pFJOHANSONSMDTRIMMER 1485 C43 3 6pFATC100BCAPACITOROREQUIVALENT 01104B C44 3 6pFATC100BCAPACITOROREQUIVALENT 01104B C45 6 8pFATC100BCAPACITOROREQUIVALENT 01111 C46 6 8pFATC100BCAPACITOROREQUIVALENT 01111 C47 6 8pFATC100BCAPACITOROREQUIVALENT 01111 C48 6 8pFAT...

Page 37: ...YBRIDCOUPLER3dB 90 ANAREN 05368 H2 HYBRIDCOUPLER3dB 90 SAGE 05369 NTC1 NTC100KWPTH 00661 NTC2 NTC100KWPTH 00661 IC1 DG419DY 04583 IC2 DG419DY 04583 DZ1 15VSMDZENERDIODE 03135 DZ2 15VSMDZENERDIODE 03135 DZ3 6 8VSMDZENERDIODE 03137 DZ4 6 8VSMDZENERDIODE 03137 DL1 SMDLEDDIODE RED 03056 DL2 SMDLEDDIODE RED 03056 PN964AR3 PCB 0643K Torretta 3x10 f f V0774 Imballovelapack 200x125x50 09983 All manuals an...

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