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FMTRANSMITTER

TR

EM1000HEDIGPLUSCOMPACT

TechnicalManual1v2November2019

72

3.810WDRIVERBOARD

Figure:10Wdriverboard

ThisamplifierboardreceivesthesignalfromtheFMSYNTHETIZERmodule.TheRFsignalthat
comes from this module is filtered and amplified by a MOSFET Q1 MRF6V2010NBR5. The
amplifier circuit has a variable power supply that ranges between 30Vdc and 50Vdc, after
passingthroughtheLM317regulator,30Vddsareobtained.

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 of the
ALCloop.ThisvoltageisgeneratedbytheCONTROLCARDbymeansofaPWMsignalthatwill
bedeterminedbytheoperatinglogicandoperatingstatusoftheequipment.

Thisboardalsoworksasaninterfaceforthesignalsthataregeneratedinthefinalstageand
output filter, reaching the FWD, REF and temperature signals, which are sent to the MAIN
BOARDwheretheyareprocessedandsenttotheCONTROLBOARD.

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Содержание EM 1000 HE DIG PLUS COMPACT

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

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

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