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EuroTel ETL0W474G, Operating And Technical Manual

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EuroTel ETL0W474G Operating And Technical Manual Download Page 32

ETL0W474G

Rev. 004

4 )  

4 )  

4 )  

4 )  Alarm and Warning Events

Alarm and Warning Events

Alarm and Warning Events

Alarm and Warning Events

In ETL0W474G many measures have different threshold values configured and stored in the EEPROM. 
Different values are configured for DTV and ATV operating mode.

When the actual values of these measures are not located within the thresholds set, a warning or an 
alarm event occurs. The occurrence of warning and alarm events depends on the type of threshold 
violated.

The following explains what happens to the Amplifier when a warning or an alarm event occurs.

WARNING EVENT:

WARNING EVENT:

WARNING EVENT:

WARNING EVENT:

Amplifier operation is not interrupted. The power supply of the final modules of the amplifier is reduced 
by about 13%. This reduces by about 25% the RF output power of the ETL0W474G Amplifier.

ALARM EVENT:

ALARM EVENT:

ALARM EVENT:

ALARM EVENT:

Shutdown of the power supply of the final modules of the amplifier. The amplifier is disabled, no RF 
output power is available.

The threshold values of the measure can be seen by RS-232 connection. 

An example of what appear on PC's display is reported in Figure 9. NOTE: Values shown in this picture 

NOTE: Values shown in this picture 

NOTE: Values shown in this picture 

NOTE: Values shown in this picture 

are for demonstration only, they should be not real values.

are for demonstration only, they should be not real values.

are for demonstration only, they should be not real values.

are for demonstration only, they should be not real values.

Figure 9: Example of PC's display for RS-232 connection.

Warning and alarm events may occur immediately or delayed with respect to the instant in which the 
threshold is violated. Delayed warning events occur 10 seconds after the threshold violation whereas 
delayed alarm occurs 5 second after the threshold violation.
For some measures is also provided a “Low” threshold value. This is the threshold at which the value of 
the measure must be drop after a warning or an alarm event to restore the standard operating mode. If 

Page 32

CMAN0W474G

Oct 2013

Summary of Contents for ETL0W474G

Page 1: ...V 1800 W ATV 750 W RMS DTV 1800 W ATV 750 W RMS DTV 1800 W ATV UHF B IV V RF LIQUID COOLED POWER AMPLIFIER UHF B IV V RF LIQUID COOLED POWER AMPLIFIER UHF B IV V RF LIQUID COOLED POWER AMPLIFIER UHF B IV V RF LIQUID COOLED POWER AMPLIFIER EuroTel S p A Via Martiri della Libertà 4 20035 Lissone MI Italy Tel 39 039 24361 Fax 39 039 2436222 E Mail sales eurotel it Web http www eurotel it Oct 2013 CMA...

Page 2: ...ETL0W474G Rev 004 Page 2 CMAN0W474G Oct 2013 ...

Page 3: ...LLIUM OXIDE CERAMICS 7 6 FIRST AID PROCEDURES IN CASE OF ELECTRIC SHOCK 7 7 EMERGENCY RESUSCITATION EXPIRED AIR METHOD 8 8 TREATMENT FOR BURNS 8 Section C SYSTEM DESCRIPTION AND TECHNICAL SPECIFICATIONS 9 I INTRODUCTION 9 II COMPOSITION OF RF AMPLIFIER SERIES ETL0W474G 9 III TECHNICAL SPECIFICATIONS 10 1 General 10 2 Input Parameters 10 3 Output Parameters 10 4 Dimensions and Weight 10 IV FUNCTION...

Page 4: ...IT DIAGRAMS 35 I MAINFRAME 35 1 ETL0W474G Layout of R F parts of Amplifier 35 TABLE OF ILLUSTRATIONS TABLE OF ILLUSTRATIONS TABLE OF ILLUSTRATIONS TABLE OF ILLUSTRATIONS Figure 1 UHF TV RF Power Amplifier series ETL0W474G blocks diagram 12 Figure 2 Front panel of series ETLW0474G TV RF Amplifier 15 Figure 3 Rear panel of series ETL0W474G TV RF Amplifier 17 Figure 4 Enable socket and connector 18 F...

Page 5: ...rmation contained herein is the property of EUROTEL S p A and is supplied without liability for errors or omissions and no part may be reproduced used or disclosed except as authorized by for errors or omissions and no part may be reproduced used or disclosed except as authorized by for errors or omissions and no part may be reproduced used or disclosed except as authorized by for errors or omissi...

Page 6: ... Power Amplifier is operating do not attempt do not attempt do not attempt do not attempt to remove to remove to remove to remove and then re insert the rear panel coaxial interconnecting cables of the EXCITER Although and then re insert the rear panel coaxial interconnecting cables of the EXCITER Although and then re insert the rear panel coaxial interconnecting cables of the EXCITER Although and...

Page 7: ...ormed only with special equipment eg breathing apparatus with air bottle in order to avoid inhalation of harmful fumes gases and dust produced by combustion 5 5 5 5 HANDLING BERYLLIUM OXIDE CERAMICS HANDLING BERYLLIUM OXIDE CERAMICS HANDLING BERYLLIUM OXIDE CERAMICS HANDLING BERYLLIUM OXIDE CERAMICS Parts containing BeO ceramics are not a health hazard provided that safety regulations are followed...

Page 8: ...ALL Figure 4 Start with four quick deep breaths and then continue with one breath every five seconds i e 12 times a minute This should be continued until the victim revives or a doctor certifies death As consciousness returns the victim will start to breathe on his own and a PINK colour will replace the BLUE look This is the time to stop resuscitation Continue to hold his chin up so to keep the ai...

Page 9: ...0W474G COMPOSITION OF RF AMPLIFIER SERIES ETL0W474G COMPOSITION OF RF AMPLIFIER SERIES ETL0W474G COMPOSITION OF RF AMPLIFIER SERIES ETL0W474G The series ETL0W474G TV R F Amplifier consists of one class AB driver stage that feeds four class AB final RF amplifiers combined Other parts of this Amplifier are four identical switching power supply modules for final amplifiers two identical switching pow...

Page 10: ... temperature 55 C 2 2 2 2 Input Parameters Input Parameters Input Parameters Input Parameters Input R F nominal level DTV 0 3 W rms ATV 1 W peak sync Input impedance 50 Ω unbalanced Input return loss 18 dB 3 3 3 3 Output Parameters Output Parameters Output Parameters Output Parameters Output frequency range BANDS IV V 470 860 MHz Power gain 35 dB Output impedance 50 Ω unbalanced Permissible VSWR 1...

Page 11: ...el This display provides all the significant electrical parameters RF power temperature supply voltages and currents and other important information The D C supply is distributed in such a way that if one of the power supplies fails the driver Amplifier and 3 of the output stages are still supplied In this condition the surviving supplies will sustain an output current increase of several Amperes ...

Page 12: ...ETL0W474G Rev 004 Figure 1 UHF TV RF Power Amplifier series ETL0W474G blocks diagram Page 12 CMAN0W474G Oct 2013 ...

Page 13: ... connections of the coolant must NOT be interchanged refer to Figure 3 connections of the coolant must NOT be interchanged refer to Figure 3 connections of the coolant must NOT be interchanged refer to Figure 3 connections of the coolant must NOT be interchanged refer to Figure 3 Connect the 7 16 type coaxial RF plug from the output power adder to the R F OUTPUT socket of the Power Amplifier Conne...

Page 14: ... Normally controls the lower row of the display and is menu driven Normally controls the upper row of the display and is menu driven PREV Controls the menu levels and is menu driven as explained in detail in the MENU DESCRIPTION following DISPLAYS and LED s DISPLAYS and LED s DISPLAYS and LED s DISPLAYS and LED s 4 MULTIFUNCTION METERING DISPLAY Two row 16 character alphanumeric display Shows leve...

Page 15: ...Rev 004 ETL0W474G Figure 2 Front panel of series ETLW0474G TV RF Amplifier Oct 2013 CMAN0W474G Page 15 15 15 15 1 2 3 4 5 ...

Page 16: ...input type N socket 2 RF OUTPUT RF output type 7 16 socket 3 ENABLE IN OUT DIN type socket Receives the ENABLE voltage from the Exciter and sends a READY signal to the Exciter 4 ALARMS OUT Type D 25 pin socket Provides contacts from the Low RF output power alarm relay and the Reflected RF power alarm relay 5 E LINK Type D 9 pin socket to be connected to the Supervisor This link is used to implemen...

Page 17: ...Rev 004 ETL0W474G Figure 3 Rear panel of series ETL0W474G TV RF Amplifier Oct 2013 CMAN0W474G Page 17 17 17 17 1 2 3 4 5 6 7 8 ...

Page 18: ...used to make external connections as shown in following Table Table 1 Connections to ALARMS OUT socket Figure 5 ALARMS OUT socket PIN PIN PIN PIN 25 PIN DIN SOCKET 25 PIN DIN SOCKET 25 PIN DIN SOCKET 25 PIN DIN SOCKET 1 1 1 1 Configurable alarm Contact closed in alarm condition 2 2 2 2 Configurable alarm Common contact 3 3 3 3 Configurable alarm Contact open in alarm condition 4 5 6 7 8 9 10 4 5 6...

Page 19: ... SERIAL DATA RS232 socket Figure 7 Serial Data Com in out socket PIN PIN PIN PIN DESCRIPTION DESCRIPTION DESCRIPTION DESCRIPTION 1 1 1 1 Not connected 2 2 2 2 TX out 3 3 3 3 RX in 4 4 4 4 RX c er 5 5 5 5 Ground 6 6 6 6 Not connected 7 7 7 7 Not connected 8 8 8 8 TX c er 9 9 9 9 Not connected 9 9 9 9 E LINK SERIAL NETWORK socket E LINK SERIAL NETWORK socket E LINK SERIAL NETWORK socket E LINK SERIA...

Page 20: ...interconnection among power amplifiers A serial port is available as output interface in RS 232 standard A serial port is available as output interface in RS 485 standard The Technical information manual for the installation and operation of the interface is available from EuroTel to EuroTel Customers on request Page 20 CMAN0W474G Oct 2013 ...

Page 21: ...nterconnecting cables on the Exciter while the equipment is in operation Sudden panel coaxial interconnecting cables on the Exciter while the equipment is in operation Sudden panel coaxial interconnecting cables on the Exciter while the equipment is in operation Sudden panel coaxial interconnecting cables on the Exciter while the equipment is in operation Sudden loss and re application of RF drive...

Page 22: ...ess the pushbutton SELECT to enter the menu then push SELECT again several times until you reach the menu MLC Nominal value MLC Nominal value MLC Nominal value MLC Nominal value Set the new MLC Nominal value by means of the push buttons and store the new value and wait until the display automatically exits the menu The following step by step example shows how to change the output power from 1200W ...

Page 23: ... that the temperature of the internal heat sinks is getting too high Check temperature on the Multi function Display If the temperature of the module is high make sure that the coolant temperature is at a correct value Too high temperatures of the coolant lead to a rise in temperature of the amplifier In this case check also that the hydraulic cooling system is working properly As soon as the Micr...

Page 24: ...ows the regulated output voltage of the power supply 1 Vsupply 2 Vsupply 2 Vsupply 2 Vsupply 2 V V V V Shows the regulated output voltage of the power supply 2 Vsupply 3 Vsupply 3 Vsupply 3 Vsupply 3 V V V V Shows the regulated output voltage of the power supply 3 Vsupply 4 Vsupply 4 Vsupply 4 Vsupply 4 V V V V Shows the regulated output voltage of the power supply 4 Isupply 1 Isupply 1 Isupply 1 ...

Page 25: ...forward RF final output average power on N 1 Amplifier and reflected final output power on N 2 Amplifier only for system without supervisor 2 2 2 2 First level menu description First level menu description First level menu description First level menu description To set any particular menu repeatedly push the SELECT button until the required menu title appears Then the required action is selected ...

Page 26: ...ds on the information sent by the exciter through the E Link BUS With the exciter on TV Analog Mode A L C control loop referred to the peak power measure and to the peak A L C reference power With the exciter on DVB T H Mode A L C control loop referred to the average power measure and to the average A L C reference power Sent information refers to Exciter s operating mode ELinkREMO ELinkREMO ELink...

Page 27: ...iew Store LCD View Store LCD View Store LCD View Clic sel toStore Clic sel toStore Clic sel toStore Clic sel toStore Show Device Par Show Device Par Show Device Par Show Device Par Command not enabled from the front panel This command is sent via RS 232 connection It shows the configured parameters of the Amplifier Show ExtDev Par Show ExtDev Par Show ExtDev Par Show ExtDev Par Command not enabled...

Page 28: ...p val ALC startup val ALC startup val ALC startup val ALC startup val ALC startup val MLC nominal val MLC nominal val MLC nominal val MLC nominal val Not used MLC nominal val MLC nominal val MLC nominal val MLC nominal val MLC nominal val MLC nominal val MLC nominal val MLC nominal val E Link node addr E Link node addr E Link node addr E Link node addr Defines the hierarchical amplifier position a...

Page 29: ...able command when the signal defined in the menu Local Remote mode is missing Follow ext enab Follow ext enab Follow ext enab Follow ext enab Is following the enable on ENABLE IN OUT connector Switch OFF ampl Switch OFF ampl Switch OFF ampl Switch OFF ampl The amplifier is inhibited Pk Overpw tresh Pk Overpw tresh Pk Overpw tresh Pk Overpw tresh Adjusts the alarm of the output forward peak power l...

Page 30: ... Input overpo adj Input overpo adj Input Averag adj Input Averag adj Input Averag adj Input Averag adj Adjusts the alarm threshold of driving average power of final amplifiers Input overpo adj Input overpo adj Input overpo adj Input overpo adj Input Averag adj Input Averag adj Input Averag adj Input Averag adj AUX Pk Alarm adj AUX Pk Alarm adj AUX Pk Alarm adj AUX Pk Alarm adj Adjusts the alarm th...

Page 31: ...ading of forward driver power Input FWD c adj Input FWD c adj Input FWD c adj Input FWD c adj Input FWD c adj Input FWD c adj Input FWD c adj Input FWD c adj Aux coupler adj Aux coupler adj Aux coupler adj Aux coupler adj Adjust the correction of the coupling factor of the internal coupler used for the reading of forward auxiliary power Aux coupler adj Aux coupler adj Aux coupler adj Aux coupler a...

Page 32: ...s of the amplifier The amplifier is disabled no RF output power is available The threshold values of the measure can be seen by RS 232 connection An example of what appear on PC s display is reported in Figure 9 NOTE Values shown in this picture NOTE Values shown in this picture NOTE Values shown in this picture NOTE Values shown in this picture are for demonstration only they should be not real v...

Page 33: ...volatile memory of the microprocessor To clear this LED the alarm and warning memories have to be cleared This can be done only during normal operation and when no warning or alarm conditions exist To clear the memories proceed as follows Repeatedly push the SELECT button until View warning log View warning log View warning log View warning log appears Push button to enter this menu Push CLR The d...

Page 34: ...ETL0W474G Rev 004 Page 34 CMAN0W474G Oct 2013 ...

Page 35: ...h coaxial cable and connectors MOD 2 is a 90 3 dB coupler that splits the drive into four components to feed final amplifier modules MOD3 MOD4 MOD5 and MOD6 MOD 2 also houses a directional coupler for the measurement of drive power to the final stages A rectified sample of the drive power is brought through the SMB socket to the Metering and Protection module MOD 8 Each final R F amplifier module ...

Page 36: ...ETL0W474G Rev 004 Page 36 CMAN0W474G Oct 2013 ...

Page 37: ......

Page 38: ...Rev 004 ETL0W474G Oct 2013 CMAN0W474G Page 37 37 37 37 ...

Page 39: ...ETL0W474G Rev 004 EuroTel S p A Via Martiri della Libertà 4 20035 Lissone MI Italy Tel 39 039 24361 Fax 39 039 2436222 E Mail sales eurotel it Web http www eurotel it Page 38 CMAN0W474G Oct 2013 ...

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