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OMB EM 1000 HE DIG PLUS COMPACT Technical Manual Download Page 75

             FM TRANSMITTER 

 

TR 

         

 

 

EM 

1000 

HE 

DIG 

PLUS 

COMPACT

 

 

Technical Manual 1v2 November 2019 

 

70 

 

3.7

 

COMPADA BOARD 

 

This board has the following functions:  
 

x

 

Connects the +/-12V power supply to modulator.  

x

 

Controls power supply level voltage of the RF power stage. 

x

 

It helps to improve the device’s efficiency in the whole working power range, reducing 
the supply voltage at the same time the output power reduces.  

x

 

This function can be set according to the type of power supply in use, according to the 
transmitter. 

x

 

It controls the speed fans in FM amplifiers in relation to their own temperature. By 
this, the device consumes less in airing and the acoustic noise decreases, improving 
the efficiency. 
 

 

 

Figure: COMPADA board 

 

 

 

 

 

 

 

 

 

 

 

 

 

Summary of Contents for EM 1000 HE DIG PLUS COMPACT

Page 1: ...MP PA AC CT T TECHNICAL MANUAL v1 2 November 2019 OMB EUROPE OMB USA Pol gono Industrial Centrov a Calle Paraguay 6 50198 La Muela Zaragoza ESPA A 3100 NW 72nd Avenue Unit 112 MIAMI Florida 33122 USA...

Page 2: ...OMB ESPA A Pol gono Industrial Centrov a Calle Paraguay 6 50198 La Muela Zaragoza ESPA A Ph 34 976 14 17 17 Fax 34 976 14 17 18 Web www omb es E mail europa omb com...

Page 3: ...r higher than its nominal values or with signals or input information different than those specified in its individual characteristics 5 Ambient temperature inside the equipments room will accomplish...

Page 4: ...pments must be connected to the ground system so that they can be kept out of the mains discharge between tower and ground About Transportation 1 OMB Sistemas Electr nicos S A is not responsible of da...

Page 5: ...such Factory about accomplishment of individual warranties For validation of this Warranty it is indispensable that all Paragraphs be respected by the Customer Otherwise this Warranty will be automati...

Page 6: ...afety procedures and good practices to use the equipment SECTION 1 INTRODUCTION 10 Introduction to the manual technical specifications and description of the equipment s features SECTION 2 OPERATION 2...

Page 7: ...FM TRANSMITTER TR EM 1000 HE DIG PLUS COMPACT Technical Manual 1v2 November 2019 2 S Se ec ct ti io on n 0 0 G GE EN NE ER RA AL L R RE EC CO OM MM ME EN ND DA AT TI IO ON NS S...

Page 8: ...the power cord To avoid electrical shock plug the power cord into a properly wired socket before connecting to the product input or output terminals x Upon loss of the protective ground connection al...

Page 9: ...s always turn off power from the affected part of the equipment After power is removed allow sufficient time for the capacitors to bleed down before reinserting PCBs Always use discharge stick when av...

Page 10: ...R CONSCIOUSNESS If you suspect a neck or spinal injury do not shake the person If the person does not respond Call 911 or other emergency services immediately have someone else make the call if possib...

Page 11: ...her breath Slowly blow air in until the person s chest rises Take 1 to 2 seconds to give each breath Between rescue breaths remove your mouth from the person s mouth and take a deep breath Allow his o...

Page 12: ...your elbows and center your shoulders directly over your hands Press down in a steady rhythm using your body weight and keeping your elbows locked The force from each thrust should go straight down o...

Page 13: ...conductive material such as plastic or dry wood to separate the source of electricity from the victim x If the injuries appear serious or extensive call to emergency number x Check the victim s vital...

Page 14: ...ny clothing that adheres to the skin and leave it in place Keep the patient covered except the injured part since there is a tendency to chill Splint all fractures Violent muscle contractions caused b...

Page 15: ...HE DIG PLUS COMPACT Technical Manual 1v2 November 2019 10 CONTENTS 1 1 Introduction 11 1 2 Technical specifications 12 1 3 Location of parts 13 1 4 Installation 15 S Se ec ct ti io on n 1 1 I IN NT TR...

Page 16: ...t power may be varied from a minimum level and the operating frequency includes the full FM range without retouching other parameters Power section entirely modular and highly reliable RF output stage...

Page 17: ...z deviation 0 05 0 02 typical 2 kHz deviation 0 2 0 05 typical Mono S N ratio 30 to 20000Hz 76dB 86dB typical CCIR 75dB 81dB typical Stereo S N ratio 30 to 20000Hz 72dB 77dB typical CCIR 68dB 72dB typ...

Page 18: ...at the maximum deviation limiter has activated due to an audio signal that is too high ON indicator light yellow green this LED lights up two ways It lights up in yellow when the device is on stand by...

Page 19: ...ation of the left audio channel 6 REMOTE control input this 9 pin SUBD connector allows the user to remotely control the device or to perform other functions via a suitable interface 7 RS232 serial pr...

Page 20: ...cal assistance Technical intervention by personnel not authorized by OMB should not be performed As a rule the user should not access the inside of the device Tampering with the factory settings rende...

Page 21: ...st be ventilated to ensure that the temperature never exceeds 35 C Such conditions can NOT generally be met when the exhaust cooling air is not pushed outside and is instead fed back into the room Thi...

Page 22: ...the appropriate connectors It is indispensable that only low loss cables be used when connecting directly to the antenna in such cases Celflex or another similar cable is recommended Larger cables mu...

Page 23: ...er supply cable supplied with the transmitter For cable extensions sections of sufficient and appropriate length are recommended Never turn the device on without an antenna connection even when in sta...

Page 24: ...G PLUS COMPACT Technical Manual 1v2 November 2019 19 the PC port and a male DB9 connector to the transmitter The applicable communication software is also required Never connect the cable if the PC or...

Page 25: ...Technical Manual 1v2 November 2019 20 CONTENTS 2 1 Audio Operation Modes 21 2 2 Basic Operations 25 2 3 Menu and Navigation Commands 34 2 4 Description of the menu 37 2 5 Troubleshooting 60 S Se ec c...

Page 26: ...smission from a stereophonic audio signal using the internal stereo encoder Monophonic or stereophonic transmission from an external encoder or radio link receiver The device is also able to transmit...

Page 27: ...is used for connection to the balanced output of a professional mixer Alternatively an unbalanced connection can be used and is useful for output connections on inexpensive devices without a percepti...

Page 28: ...y a separate stereo encoder the driver tone must be measured in the absence of audio modulation and all other auxiliary signals as described below 1 Disconnect all signals from the external stereo enc...

Page 29: ...he pre emphasis use the SETUP menu 2 1 8 Operating with the RDS and SCA encoders In addition to the aforementioned operating modes this device is able to transmit an auxiliary signal RDS or SCA connec...

Page 30: ...eters should be made so as to conform to local regulations such conformity is the full responsibility of the user If the device is left on the SETUP menu without receiving a command the display will a...

Page 31: ...100KHz e g operating frequency of 91 50 MHz Otherwise if the operating frequency is defined at a step lower than 100 KHz e g operating frequency of 97 850 MHz you will need to select the 10 KHz step...

Page 32: ...ctly to step 18 to confirm the settings If the parameters set are all incorrect cancel all settings by turning the knob until ABORT is highlighted then skip to step 18 If a slight adjustment to the pa...

Page 33: ...Ensure that the measured peak deviation does not exceed local regulations then press the knob to confirm the setting 25 OK will be highlighted Three choices are now available If the parameters set ar...

Page 34: ...rameters is required turn the knob until EDIT is highlighted then return to step 30 33 Press the knob to confirm You will return to the page indicated in step 3 When the limiter begins to intervene th...

Page 35: ...lighted then skip to step 41 If a slight adjustment to the parameters is required turn the knob until EDIT is highlighted then return to step 37 41 Press the knob to confirm You will return to the pag...

Page 36: ...ngs by turning the knob until ABORT is highlighted then skip to step 53 If a slight adjustment to the parameters is required turn the knob until EDIT is highlighted then return to step 46 53 Press the...

Page 37: ...e g inverse intermodulation in the final stage If the reflected power exceeds 10 of the direct power you will not be able to increase the output power beyond a certain value due to an excessive SWR s...

Page 38: ...g the ON STAND BY button The device is on stand by when the ON LED changes from green to yellow To perform the reverse operation press the ON STAND BY button again The ON LED will light up in green 2...

Page 39: ...menu using The multi function knob The ESCAPE button 2 3 1 Multifunction knob The multifunction knob is used to select the various menus that allow you to view or set the device s parameters and func...

Page 40: ...lighted 2 Briefly press the knob to access the highlighted menu The first page of the selected menu will appear in the example below the first page of the SETUP menu 3 Turn the knob to select the desi...

Page 41: ...password at step 2 2 3 4 Additional commands in the SETUP and VIEW menus NEXT PAGE and PREV PAGE The SETUP and VIEW menus are composed of multiple pages as such you can access the next page by select...

Page 42: ...menu is normally the menu accessed as such pressing the knob will take you to that menu For further details refer to the next section Access to the VIEW and SETUP menus may be password protected If s...

Page 43: ...red during operation During normal use of the device we recommend that the STATUS menu be selected Each of the above sub menus is used to view parameters as such options cannot be selected using the k...

Page 44: ...power go to the sub menu POWER under the SETUP menu L R sub menu The screen for this sub menu is used to monitor total peak modulation It shows the following items Left left channel the current level...

Page 45: ...different scales can be selected by simply turning the knob The first LAST 2 Min shows the modulation trend for the last two minutes The second LAST 2 Hr shows the modulation trend for the last two h...

Page 46: ...menu VOLTAGE sub menu The screen for this sub menu indicates the device s power voltages as follows Vsupply positive voltage supply indicates the positive voltage supply for the low power section in...

Page 47: ...model in use in the example 35 C VIEW LOG sub menu This sub menu provides a historical record of events transmitter turned on turned off on stand by etc and alarms insufficient modulation excessive r...

Page 48: ...ng the VIEW LOG menu you must exit and re enter the VIEW LOG menu in order to view the alarm on the event list To select subsequent alarm events less recent with higher numbers turn the knob anti cloc...

Page 49: ...evel MPX SENS modulation sensitivity AUX SENS auxiliary modulation sensitivity e g RDS LIMITER maximum deviation limiter MODE transmission mode e g stereo mono and pre emphasis DISPLAY display backlig...

Page 50: ...ers can be set Step frequency increments can be selected in the example 100 KHz Frequency operating frequency POWER setting It is used to adjust the transmitter s output power The display shows the fo...

Page 51: ...ignal RDS SCA The display shows the following Aux followed by a deviation value expressed in KHz in the example 0 0KHz and in dB in reference to a deviation of 75KHz 0dB 75KHz Nom input nominal value...

Page 52: ...owed by OFF if deactivated or by a value expressed in dB in reference to a deviation of 75KHz 0dB 75KHz Mpx measurement of the current peak deviation value expressed in KHz in the example 0 0 KHz in d...

Page 53: ...to confirm A value will be indicated after Mode 2 Turn the knob to change the setting to Mono Stereo Mono L R or Mpx according to your requirements then press the knob A value will be indicated after...

Page 54: ...to confirm SET IN remote control input setting Used to set logic levels for the ENABLE line in the remote control input The following parameters can be adjusted Type transmitter s activation deactiva...

Page 55: ...c levels high low used for remote control You can define whether the status of the following lines normally has a HIGH or LOW logic level OnAIR logic ON THE AIR line which signals when the device is p...

Page 56: ...nd set the passwords to protect access to the menus Two passwords are available LEV 1 this level is more restrictive and protects access to both the VIEW and the SETUP main menus LEV 2 protects access...

Page 57: ...knob to select the third character then press to confirm The fourth character in the password will be highlighted 6 Turn the knob to select the fourth character then press to confirm The first charact...

Page 58: ...the display will indicate the associated alarm e g Mpx Low insufficient modulation The last 100 alarm events can be accessed via the VIEW LOG alarm history menu under the main VIEW menu This menu all...

Page 59: ...set here a warning pre alarm is issued by flashing the ALARM LED The pre alarm is not saved in the event history Alarm Low Power if the output power falls below the percentage set here an alarm is is...

Page 60: ...confirm 3 Using the knob select OK to save the settings EDIT to make further changes or ABORT to exit without saving the new settings then press to confirm UNLOCK From this screen a time can be set be...

Page 61: ...when modulation constantly remains at least 16 dB below 75KHz for 56 seconds To set the insufficient modulation pre alarm and alarm 1 Ensure that the EDIT option is selected otherwise turn the knob to...

Page 62: ...ent history delete function does not request confirmation as such be careful not to accidentally delete the history POW TIMER setting It is used to automatically decrease the transmitter s power by a...

Page 63: ...ped with an optional modem its parameters can be defined via this screen For further details refer to the documentation provided with this option If a modem has not been installed the screen will indi...

Page 64: ...the new level 3 password and stored it in a safety place IMPORTANT Always note down the level 3 password and sore it in a safety place Should you loose it the total reprogramming of the equipment or...

Page 65: ...conds and 16dB as to 75KHz frequency deviation that is 0dB 75KHz Refl Power High excessive reflected power The Refl Power high alarm message appears when the reflected power level exceeds a threshold...

Page 66: ...happens it s quite important to contact the local authorized assistance point Depending on the software release of the control firmware this alarm is often masked by the consequent low RF direct outp...

Page 67: ...3 2 FM synthesizer 64 3 3 Main board 65 3 4 Control unit board 67 3 5 Aux power supply 68 3 6 Knob encoder board 69 3 7 Compada board 70 3 8 10W driver module 72 3 9 Main power supply and low pass fi...

Page 68: ...er Figure 3 1 EM 1000 HE DIG PLUS COMPACT Internal View The elements numbered in the previous picture are described next 1 FM Synthesizer 2 Main Board 3 Control Unit Board 4 Aux Power Supply 5 Display...

Page 69: ...the output RF stage This latter is composed by two small MOSFET transistors TR9 and TR10 and attains some 900mW output level 29dBm over the full FM range To correctly operate TR9 and TR10 require a g...

Page 70: ...ronic attenuator included in Electrical Diagram B The last operational IC2 d amplifies and filters the input of the RDS SCA auxiliary channel eliminating the low frequencies of this input and feeding...

Page 71: ...rating amplifiers feed the pre emphasis stages whose time constants can be digitally set to 0 50 or 75 s through the analog gates of IC9 Following is the limiting stage or more properly trimmer consis...

Page 72: ...n the MAIN BOARD arrive on the board the processor converts them through the internal A D converters and processes them The processor of the control board is the support of the telemetry systems both...

Page 73: ...z Efficiency 80 typical AC Consumtion 0 8A 115VAC 0 55A 230VAC typical Output DC Voltage 13 5V 13 5V Nominal Current 1 3A Current Range 0 3 2A Nominal Power 35 1W Adjustable Voltage Range 120mVp p Vol...

Page 74: ...to ON STAND BY and ESC The front LEDs have the following functions LD1 ON STAND BY indicator light yellow green This LED looks two ways It looks yellow when the equipment is in stand by It looks gree...

Page 75: ...helps to improve the device s efficiency in the whole working power range reducing the supply voltage at the same time the output power reduces x This function can be set according to the type of pow...

Page 76: ...J7 2 IDC10 PCB Straight male IDC10 J6 J8 2 Connector SMD 6 PCB straight Micro match 7 188275 6 J9 1 BJT NPN BC817 SMD SOT 23 BC817 Q1 Q2 2 Resistor SMD 1206 0 25W 1 10K R1 R8 R9 R11 R16 R20 6 Resistor...

Page 77: ...regulator 30Vdds are obtained The output power of this DRIVER is variable so the output power depends on the Byas voltage that is applied to the transistor This voltage of Byas comes from the tension...

Page 78: ...typical Power factor 0 97 230VAC 0 98 115VAC at full load typical Output DC Voltage 48V Rated current 42A Current range 0 42A Rated power 2016W Adjustable voltage range 300mVp p Voltage tolerance 42...

Page 79: ...des forward and reflected proportional Vdc voltages depending forward and reflected power It takes a RF sample not demodulated MONITOR RF too in order to be externally used to make measures with a mod...

Page 80: ...REFERENCE QUANTITY PCB filter 1v0 PCB 1 PCB 7 5pF PCB C1 1 PCB 11 7pF PCB C2 1 SMD Capacitor 1206 1nF C6 C7 C8 C9 C14 C15 6 SMD Capacitor 1206 10pF C10 C12 2 SMD Diode SOT 23 HSMS2800 D1 D2 2 Coil L1...

Page 81: ...ropagation of the RF signal across the rest of the equipment producing EMI radiation the supply of these modules is made through pass wall filters and a choke The transistors are polarized by an exter...

Page 82: ...F Capacitor C26 C31 2 SMD SOT23 5 1V BZX84C5V1 Zener Diode D2 1 Binocular Ferrite FT8 FIL1 1 Air core ind 1812 56nH L1 1 NPN SMD SOT23 PMBT2222A Transistor Q2 1 SMD 2512 1W 220R Resistance R1 R4 2 SMD...

Page 83: ...ree control lines The integrated circuit IC1 through its two sections filters the output of the frequency comparator both towards the modulating varicap diodes and towards the phase hook detection cir...

Page 84: ...the transmission of all the most common standard services referred to in EN50067 EN62106 and EBU Tech 3244 and it is compatible with the UECP remote control protocol This feature allows the device to...

Page 85: ...fied and accessible on the transmitter Alternatively that IP address can again be assigned to a static public address with Internet access through the router and used for remote control from any exter...

Page 86: ...et network connector It can be mounted directly on the rear panel of the device or can be connected with an ETHERNET cable and an RJ54 connection panel 6 BATTERY CONNECTOR used to connect the lithium...

Page 87: ...igital process and transmission is its virtual insensitivity to external noise when properly managed Being the audio signal essentially analog at least one Analog to Digital conversion must be perform...

Page 88: ...tilskipunar 1999 5 ESB Italiano Questo apparato conforme ai requisiti essenziali ed agli altri principi sanciti dalla Direttiva 1999 5 EC Nederlands Deze apparatuur voldoet aan de belangrijkste eisen...

Page 89: ...nd to comply with the limits for a Class B digital device pursuant to part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference in a residential...

Page 90: ...indicates that the unit at the end of its life has to be considered WEEE Waste of Electrical and Electronic Equipment Toxic materials Product and environmental safety Some components used in the const...

Page 91: ...FM TRANSMITTER TR EM 1000 HE DIG PLUS COMPACT Technical Manual 1v2 November 2019 85 INTENTIONALLY BLANK...

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