MANUALE DG-OHM ENG
Contents
1. Digital Video Broadcasting HD amp FULL HD Universal field strength meter TAVOLA INF ORMAL bai 50 cr V ID 0318 6 UNAOHM TECHNOLOGY s r l via G di Vittorio n 49 Peschiera Borromeo MI www unaohm it export unaohm it INAWNYLSNI 430 NHAL NO NHAL NI YOSYN9 JHL e ONY 19385 NI NO NOILVANILIV 353 8030 NOILO3T3S WYIANOO DAI rw Liv ANNIN NI a ASIGOW ANY WNYLOAdS NI p 3S V3SHONI LIV e e ANNIN NI IHL NV WNYLOAdS NI NOILVANSLLVY JSVIHONI ANAW NI ASIGOW ONY WNYLOSdS TSNNVHO LIN SIHASVJA TWLIDIQ 35734030 QINVIAINOO ob3siq JN3S OSPA m ea X eo ily IIA IWHUSDONA 2 AngEp Od ad 4 01 Wor en ara EIER HJ HIDNIAHILS O1SI4 32ecduuocz MEE Pee oro pe oem ce eps eee Pe _ __ ee eh eee OR LLLI WNYLOAdS 0 63 05 SOZ E HP 8 9 34 gn 2 38 SAVHDOHA 03805 TIV23H JOVLIOA 135 ANY 330 NYNL NYNL ANAW 3015 3J18vN3 179 dL 4431 318VN3 53919 ANY IN QVOINMOG Sdans val TWLIDIG WNYLOAdS AONINO244 318VN3 TABLE OF CONTENTS 1 GENERAL WARNINGS 1 1 WARNINGS 1 2 PRECAUTIONS 1 3 MAINTENANCE 12. due to foreign bodies even very small ones which enter the equipment despite all of the measures taken to prevent this possibility It is therefore recommended in particular when joining coaxial cables not to do so in the immediate vicinity of the equipment because even very small pieces of the mesh shielding could penetrate the equipment and cause occasional short circuits which are not easily detected by technical support engineers 1 3 MAINTENANCE Opening the instrument and any operations must be done exclusively by UNAOHM qualified personnel or at authorised service centres having basic electro technical and electrical safety knowledge Before intervening disconnect the power cable For the units equipped with a battery remember the notes included in section 1 1 Be careful not to come into contract with circuits which even though not powered still maintain an electrical charge condensers Use suitable measures against accumulation of electrostatic charges Do not touch circuits inside the equipment without first putting on an appropriate antistatic strap To clean the external parts 1 Remove the power supply cable 2 Use soft cloths Use non aggressive detergents and do not use hydrocarbon based substances 3 Do not allow liquids or other substances to pene trate inside the instrument 1 4 NOTES some fixed or less bright points pixels may remain on the LCD monitor screen This is to be considered normal and fall
3. e multi function tilting cover o Closed used for protection during transport o Adjustable opening to further protect from sunlight o Flap opening as a pedestal for secure support e transport strap for safe use with hands free e side handle for transport and safe handling Monitor Professional colour 5 7 LCD with wide viewing angle and back light control Weight less than 2 Kg Size cm 24 L x 16 A x 9 P Li lon battery autonomy autonomy over 5 hours fully charged in 4 hours USB port PC connection for firmware updates and download of measurements stored with the data logger also with any software for remote control RCA video input to test decoder and video camera video signals DG OHM UNAOHM TECHNOLOGY 6 3 0 TECHNICAL SPECIFICATIONS Characteristic DG OHMHD DG OHM FULL HD Real time spectrum analyzer Frequency band 45 2250 MHz 45 2250 MHz DVB T Y UU LIE aks I DVB C DVB S 2L 0 Constellation diagram N NO DiSEqC mI JJ MS MS LTE analysis Eonoes analyss _ Eq Data Logger Length calculation from the cable ul lt point Atomatic terrestrial channel o colour igh brightness LED Lion bay autonomy 58 3 1 SUPPLIED ACCESSORIES KKK KKK lt lt lt lt lt lt lt lt 1 External network power supply 1 Li lon 4 5 Ah battery 1 Instructions man
4. 4 NOTES 2 INTRODUCTION 2 1 METHOD OF USE 2 2 MAIN CHARACTERISTICS 2 3 MECHANICAL CHARACTERISTICS 3 0 TECHNICAL SPECIFICATIONS 3 1 SUPPLIED ACCESSORIES 3 2 OPTIONAL ACCESSORIES 4 KEYBOARD 4 1 STATUS BAR 5 INSTRUCTIONS FOR USE 5 1 POWER 5 2 START UP AND SHUT DOWN 5 3 BATTERY USE 5 4 PREPARATION FOR START UP 6 0 TUNING 6 1 TERRESTRIAL TUNING 6 2 SATELLITE TUNING 6 2 1 AUTOMATIC SATELLITE TUNING FOR TRANSPONDER 6 2 2 MANUAL SATELLITE TUNING 7 0 ATTENUATOR 8 0 MENU 8 1 MAIN MENU 8 2 DIGITAL MENU 8 3 TV MENU 8 4 DiSEqC MENU 8 5 PROGRAMME MENU 8 6 LNB MENU 8 7 DATA LOGGER MENU 9 0 TERRESTRIAL ANTENNA INSTALLATION 9 1 POINTING 9 2 OPTIMISATION 9 3 TV PICTURES DG OHM UNAOHM TECHNOLOGY I ABW NNN CO 10 0 SATELLITE DISH INSTALLATION 10 1 POINTING 10 2 OPTIMISATION 10 3 TV PICTURES 11 0 SPECIAL FUNCTIONS 11 1 3 IN 1 FUNCTION 11 2 CONSTELLATION 11 3 AER ECHOES ANALYSIS FOR DIGITAL TERRESTRIAL 11 4 CLC FUNCTION LENGTH CALCULATION FROM CABLE FAULT POINT 11 5 DiSEqC SCR FUNCTION 11 6 LTE 12 0 PROGRAMME MEMORIES 12 1 SAVING PROGRAMME MEMORIES 12 2 PROGRAMME TABLE 12 3 PROGRAMME RECALL 13 0 DATA LOGGER 13 1 INSTANT DATA LOGGER 13 2 UHF DATA LOGGER 13 3 SATELLITE DATA LOGGER 14 0 FIRMWARE UPDATE VIA PC 15 0 WARRANTY DG OHM UNAOHM TECHNOLOGY 1 GENERAL WARNINGS MARKING This equipment is in conformity with the following standards and documents e ELECTROMAGNETIC COMPAT
5. ANTENNA INSTALLATION The pointing of a terrestrial antenna must be carried out in 3 different phases 1 POINTING phase 1 button 2 OPTIMISATION phase 2 3 button 3 CLEAR NIT AND TV PICTURES VIEWING phase 3 button To help better remember the order of the three phases please note that the numbers associated with the button precisely follow the order of the phases 9 1 POINTING phase 1 button The first pointing phase has the task of identifying the direction from which digital terrestrial signals are received and at the same time thanks to the spectrum in real time to search for the antenna position that will get the most amount of signals or rather the most power The field meter must be set to mo analyzer mode ull initially entering the FULL spectrum viewing mode press to change from SPAN to FULL This will allow us to pinpoint the location of the repeater Next select a specific channel to be chosen from the importance of MUX content paid channels or guaranteed channels such as RAI Mediaset or choose another low quality channel In the latter case obviously improving the quality of a poor quality MUX other channels arriving from the same direction can benefit or at least not suffer The fact remains that in many cases pointing is also a position compromise that must meet the requirements of the involved MUX Once a channel or specific MUX has been set you will need to modify the SPAN Press and ho
6. flash Use the increase and decrease keys to select the 4 polarities e VL vertical low 13Volt e HL horizontal low 18 Volt e VH vertical high 13Volt 22KHz e HH horizontal high 18Volt 22KHz ATTENTION in terrestrial voltages OVolt 13Volt 18Volt will be enabled to power external devices such as pole control units etc NU 4 Symbol rate from the digital screen single click on the button to activate the side ATT P menu Select the PARAMETERS box Using the A AT UD down buttons press ex the cursor will move to SYMB R Subsequently press to move the cursor to the right on the numerical value of the symbol rate and using the keyboard which has converted into a numerical keypad you can enter the value of the new symbol rate 7 0 ATTENUATOR If the signals measured by the MARKER exceed or are less than the values detected by the instrument in its current conditions this situation will be signalled with the appearance of a greater than or less than symbol indicating the need to insert or remove attenuation cells allow correct reading of the signal level or power It is possible to manually act on attenuators using the following keys 1 A AT T4 will add an attenuation cells at steps of 10 db ATT AUTO 2 AT Al T4 will remove attenuation cells at steps of 10 db It is however possible to use the AUTOMATIC ATTENUATOR This activation will enable the instrument to automa
7. the icon will become red before the instrument switches off At this point we recommend interrupting use of the instrument and recharging the battery as soon as possible If you continue to use the instrument 5 10 minutes max the instrument will switch off e When the equipment remains inactive for long periods we recommend charging the battery at least once a month to prevent deterioration e We recommend switching on the instrument at least once a month for a few hours 5 4 PREPARATION FOR START UP Upon start up the instrument returns to the same conditions of use at the last shut down if it was shut down using the button with the following exceptions e Power supply voltage for safety reasons in output from the input connector RF IN is always excluded whenever TPSAT is not used e The measurement status of the digital sections QPSK OFDM or QAM is not restored Each time a button is pressed a short acoustic tone is heard in confirmation of the operation To mute the beep press the button position the cursor on BUZZER and select OFF DG OHM UNAOHM TECHNOLOGY 9 6 0 TUNING 6 1 TERRESTRIAL TUNING Terrestrial tuning can be carried out by frequency channel or programme In order to select a mode press the corresponding button 1 Single click the lt button to activate the programme mode allowing navigation by means of the a gt buttons or setting a number from the numeric keypad by programme 2 Single cli
8. the order of the phases Press and hold the button to switch from terrestrial to satellite and vice versa Once you have switched to the satellite range BLUE status bar the pre stored TRANSPONDERS will already be active in the status bar Press the a gt key to select the desired Transponder 10 1 POINTING phase 1 button Set a SPAN value press and hold the button to obtain a zoom on a specific signal Now simply position the satellite dish with elevation appropriate to the location Next move the satellite dish horizontally to capture the searched satellite Thanks to the REAL TIME SPECTRUM you will simply need to move the satellite dish horizontally until the MARKER positions in the middle of the received signal as shown below 10950 0 LOL 0 60 6 In this situation the TP will not necessarily be exactly the desired satellite because there may be TP with parameters similar to ours but of other orbital positions Therefore once you are in the above indicated situation make sure that the signal is LOCKED pressing the button If the signal locks regardless of the quality but without RU press the 3 button which will download the NIT and in particular the orbital position that we are going to compare with the one in question If they match we have pointed the right satellite Next we will have to carry out an optimisation phase to obtain the best quality DG OHM UNAOHM TECHNOLOGY 18 10 2 OPT
9. 31
10. 9 2 E 2 6 2 2 MANUAL SATELLITE TUNING Alternatively you can use the manual professional mode procedure to enter the following parameters 1 Local oscillator from the spectrum analyzer mode 1 single click on the button to activate the side menus Select the last box press OK to select modify Use the a gt increase and decrease buttons to modify the setting e OL1 to set low satellite band frequencies frequencies lower than 11750 012 to set high satellite band frequencies frequencies exceeding 11750 e F to set satellite br n converted in IF from 900 to 2250 2 Frequency press the button The message 123 will appear on the upper left of the screen to alert the user that he can enter the frequency value with the keyboard which has now been transformed into a numeric keypad or else with the increase and decrease buttons It is also possible to tune the frequency setting simply by modifying the digit or increase or decrease step thousands hundreds tens units tenths hundredths of MHz DG OHM UNAOHM TECHNOLOGY 11 To modify the increase step press and hold the button position the cursor on the digit to be modified with the buttons confirm the step to be modified with the OK button modify the digit using the lt gt buttons LNB 3 Satellite polarity single press the button to activate or deactivate output voltage and make the Vcc camp active in the status bar which will
11. Compact model has been designed to meet the needs of different installers Installers with less requirements prefer direct quick and easy use using AUTOMATIC mode Installers with more specific requirements can also use this instrument in manual mode with the possibility of manually modifying or setting all parameters Automatic operating mode standard mode e terrestrial navigation automatic tuning of frequency directly for channels e satellite navigation direct recall tuning of pre stored transponders with a full list of associated satellites and transponders Professional operating mode user mode The user can manually set all parameters including frequency LNB voltage Local Oscillators digital parameters etc DG OHM UNAOHM TECHNOLOGY 5 2 2 MAIN CHARACTERISTICS Spectrum analyzer real time total coverage from 45 to 2250 MHz Digital measurements BER MER NM etc for standard digital DVB T T2 DVB C DVB S S2 Clear SD and HD picture viewing Constellation diagram LTE function LTE signal interference analysis toward DVB T channels TP SAT function automatic direct recall tuning of transponders AER function echoes analysis for terrestrial signals CLC function cable length calculation from the fault point in combination with external noise generator DATA LOGGER function instant UHF Satellite Diseqc 1 1 1 2 motor 2 0 SCR 2 3 MECHANICAL CHARACTERISTICS Holder ABS polymer Innovative solutions
12. E will be indicated to save the memory in that position while if the position is alreadv occupied DELETE will be indicated Use to implement SAVE DELETE To overwrite an alreadv occupied programme simplv delete it and then save new content in that position Use to return to navigating programme positions Single click to deactivate the programme table DG OHM UNAOHM TECHNOLOGY 26 PR POSITION CHANNEL TP FREQUENCY STANDARD CHBW SYMBOL R __ POLARITY a EN 49 TA 69800 DVB T 8M J OFF DELETE 1 124130 109920 DVB S 27500 VH LA om SAVE ____ s OF 127810 DVB S2 29900 DELETE 50 12 3 PROGRAMME RECALL To recall programme memories single click 28 then the message will appear on the upper right and the relative PR field will flash lt will be possible to select the programme memory number using the numerical keypad then confirming by pressing el Press to decrease or increase the memorv selection 13 0 DATA LOGGER Press and hold to activate the DATA LOGGER management menu see par 8 7 to select from INSTANT UHF SATELLITE The DATA LOGGER function allows the user to carry out a series of automatic measurements then saving the relative data in special DG OHM memories After having detected and measured within an instrument memory you will then later be able to download them onto a PC using special remote control software downloadable
13. IBILITY EMC EN55011 EN61000 3 2 EN61000 3 3 EN61000 4 2 EN61000 4 3 EN61000 4 4 EN61000 4 5 EN61000 4 8 EN61000 4 11 ENV50204 e SAFETY EN61010 1 ATTENTION The safety standards and precautions listed below must be applied scrupulously during all phases of use and maintenance of the instrument in order to prevent damage to persons animals and objects NOTE UNAOHM TECHNOLOGY S r l will not be liable for any incorrect use of the instrument or any use other than that specified 1 1 WARNINGS e Power the instrument with a voltage which falls within the limits specified in the characteristics e Do not use the equipment without the relative locks e he instrument has been designed for use in covered areas Therefore do not expose it to rain or dripping e Do not use the equipment in an explosive atmosphere constituted by flammable gases vapours smoke and powders e he instrument can be used in overvoltage Category lla and pollution grade 2 e Do not turn on the equipment immediately after moving it from a very cold area to a very hot area in order to avoid formation of condensation e Do not obstruct any cooling slots and do not place the equipment close to heat sources e For prolonged use in the laboratory or in fixed stations we recommend removing the equipment from the bag for transport in order to allow greater heat dissipation e Do not apply DC voltage or RF signals greater than those prescribed to the input connecto
14. IMISATION phase 2 button After verification of the correct satellite dish position by reading the orbital position from the NIT we will need to optimise signal quality to ensure viewing even in critical conditions by slightly moving the dish Ch BER PY BER 0 NM 6 1 dB 13 3 dB SYMB R 2758 SNR 13 5 dB EVM 21 8 CODE Bee PUR INDEX OK T P RU B BBhBLMBSs tO Weg ATT 1099 0 01 0 ED Digital satellite screen picture LOCKED SIGNAL LOCKED ON UNLOCKED NO CARR SIGNAL NOT LOCKED ON due to poor quality or absence of signal no TV pictures can be seen Ch BER BER channel measurement bit error ratio or rather the number of bit errors over time Pv BER Post Viterbi BER measurement bit errors over time after the correction of Viterbi MER Modulation error ratio errors on modulation NM Noise Margin guarantee margin in dB CFO Central frequency offset indicates the conversion error of the LNB local oscillators 10 3 CLEAR NIT AND TV PICTURES VIEWING phase 3 button Once phase 2 has been completed and therefore the best quality and quantity signal has been obtained simply press the button to activate the MPEG4 board which will communicate the N I T network information table and will allow for selection of a television broadcaster to display clear pictures see paragraph 9 3 DG OHM UNAOHM TECHNOLOGY 19 11 0 SPECIAL FUNCTIONS Model DG OHM allows user
15. any signals outside this area can be destructive as they go outside the guard interval The red marker allows us to highlight any echoes and get information e DS delta space identifies the distance of any echoes e DT delta time identifies the delay of any echoes e GUARD MKR indicates the time limit of the guard interval DG OHM UNAOHM TECHNOLOGY 21 11 4 CLC FUNCTION DISTRIBUTION CONTROL LENGTH CALCULATION FROM THE CABLE FAULT POINT This function calculates the distance of a fault on a cable due to impedance mismatch Such defects caused by distribution may depend on an open bent or generally ruined cable To use the CLC function you will need to work with a noise generator and set the DG OHM in spectrum analyzer mode button 1 2 Connect the instrument input BNC to a noise generator by means of the T connector Activate the noise generator ATT Attenuate the signal in order to put it in a readable scale using the A ATT buttons or activate the automatic attenuator press and hold ATT 4 Connect the distribution cable to the T connector 5 lf distribution presents an impedance mismatch linearitv will not be seen on the spectrum but vallevs or holes Set the SPAN with a value suitable for obtaining 2 valleys on the screen press and hold 1 Point the first market on the first valley or hole Activate the CLC functions single press to open the side boxes Select CLC ON and pr
16. ck the lt button to activate the channel mode allowing navigation by means of the buttons or setting a number from the numeric keypad by channel 3 Single click the button to activate the frequency mode allowing navigation by means of the a gt buttons or setting a number from the numeric keypad by frequency Regardless which mode has been selected when you directly set a frequency channel or programme when the relative button is pressed the message 123 will appear on the upper left of the screen to alert the user that he can select the numerical value by means of the keyboard which has now been transformed into a numeric keypad and then confirm with the OK button It is also possible to tune the frequency setting simply by modifying the digit or step thousands hundreds tens units tenths hundredths of MHz of increase or decrease To modify the step press and hold the button position the cursor on the digit to be modified with the buttons confirm the step to be modified with the OK button modify the digit using the 4 gt buttons 6 2 SATELLITE TUNING Satellite tuning can be carried out by frequency transponder TP SAT or programme In order to select a mode press the corresponding button 1 Single click the button to activate the programme mode allowing navigation by means of the a gt buttons or setting a number from the numeric keypad by programme 2 Single click the button to activate the transp
17. e P 4 Select one of the 3 possible acquisitions where data will be saved and press to start up the measurement cycle from CH21 to CH60 DATA LOGGER START LOGGER Satellite VIEW DATA To verify measurements made select VIEW DATA with relative 1 2 3 acquisition The DATA LOGGER table will be activated allowing you to view saved data POSITION CHANNEL STANDARD MUX POWER Nr CH DVB POW BER PVBER MER NM CELL __ 2 T 625 14e 4 0 0e 8 25 0 54 655 3 24 TA T 553 64e3 00e8 23 1 35 0 4 25 Nu T TA T 352 i i e L A lh Dashes in place of measurements will appear when the signal is too critical and has not even been locked UNLOCKED or NO CARR Single click to exit from the DATA LOGGER menu DG OHM UNAOHM TECHNOLOGY 28 13 3 SATELLITE DATA LOGGER The SATELLITE DATA LOGGER has been designed to measure and save data Power BER PVBER MER etc relative to the main transponders of the satellite TPSAT active in the instrument lf you should want to activate the DATA LOGGER for another satellite proceed as per paragraph 6 2 1 and start up acquisition as follows m 1 Set the instrument to spectrum analyzer mode single click 2 Press and hold to open the DATA LOGGER menu ATT P 3 Use A ATT to select SATELLITE and press ex P 4 Select one of the 3 possible acquisitions where data will be saved and p
18. ence followed by ex 3 POL V or POL H Then press b Set the polaritv through the side menu DG OHM UNAOHM TECHNOLOGY 23 c Select TRANSMIT from the side menu to send the request to the SCR LNB made up of TRANSPONDER FREQUENCY POLARITY 10992 V VERTICAL If the LNB is operational on that channel A B C D the selected transponder TP on the spectrum will be seen cut in half by the MARKER This way we will have correctly selected its recall for inni 800 polarity therefore the check its quality as also takes place for classic prery use we will press 7 to measure quality BER MER etc and then to download the NIT and view the images In SCR mode if the s button is pressed the side menu appears which allows further functions SCR Selection of the 4 SCR channels A B C D A POL Polarity setting V V vertical H horizontal TRANSMIT Send request to the SCR LNB gt gt SPAN Select for spectrum view 6 SPAN FILTRO V FILTER MKR EXIT Exit the SCR mode to return to classic use ATTENTION Due to the diversity of SCR LNB technology with respect to the classic universal LNB pay close attention to the following points 1 Programme memories cannot be used for SCR 2 To set the frequency we recommend using a numeric keypad as indicated above Increasing with the buttons may be slow as the transponder frequency setting is not made by the internal tuner of the field meter but by the LNB SCR whic
19. ess to deactivate the side menus Move the second marker using the 4 keys in frequency until you find the next or previous valley or hole Read the distance of the impedance mismatch as follows e PEE distance by mismatched expanded cables e PE distance by mismatched compact cables MIA 240 00 66 5F 30 00 AL 4 0 3 4 0 DG OHM UNAOHM TECHNOLOGY 22 Point 5 Point 6 Point 7 point 8 11 5 SCR FUNCTION 1 Set the field meter to satellite frequency range press and hold and in spectrum analyzer mode Press and hold the 3 to activate the menu Select DISEqC SCR and confirm with ex Select MONO FEED and press ex DiSEqC SCR MONO FEED DUAL FEED P 2 Select 1 of the 4 frequencies relative to the 4 SCR channels and press ex DiSEqC SCR SCR A 1 210 MHz SCR B 1 420 MHz SCR C 1 680 MHz SCR D 2 040 MHz SCR E USER 3 After selecting one of the 4 channels to check the instrument will return to the SPECTRUM mode indicating SCR at the top right in order to signal the particular mode of use 4 To check correct operation of the selected SCR channel you can use the pre stored transponders or else the parameters of the desired transponder must be manually set as follows a Set TRANSPODER frequency with the local oscillator and not 1IF frequencies for example TP124 RAI type 10 992 and not 1 242 00 P and enter the numerical sequ
20. from our website www unaohm it From here it will be possible to obtain reports or certifications regarding your television system 13 1 INSTANT DATA LOGGER The INSTANT DATA LOGGER allows the user to save all measurements Power BER PVBER MER etc relative to the MUX or TRANSPONDER being analyzed and that is active at that moment Simply press and hold from the digital screen press to a maximum of 50 instant memories mixed between MUX and TRANSPONDERS Once the measurements have been saved the information containing the INSTANT DATA LOGGER position in which measurements have been saved or the first available will appear on the middle bottom of the screen DG OHM UNAOHM TECHNOLOGY 27 To read all measurements saved in the INSTANT DATA LOGGER activate the DATA A LOGGER menu press and hold 27 select INSTANT and press under DATA DISPLAY The table for managing and or viewing the INSTANT DATA LOGGER will be displayed 13 2 UHF DATA LOGGER The UHF DATA LOGGER has been designed to measure and save all measurement values Power BER PVBER MER etc relative to the UHF range or rather from channel 21 to channel 60 allowing a maximum of 3 acquisitions for the entire UHF frequency range To start up full UHF acquisition proceed as follows in 1 Set the instrument to spectrum analyzer mode single click 2 Press and hold to open the DATA LOGGER menu ATT p 3 Use A ATT to select UHF and press
21. h receives the request from the instrument and then modifies it and responds later 3 The vertical horizontal polarity is no longer recalled by means of varying LNB voltage 13Volt vertical 18Volt horizontal but will form part of the package that we will send to the LNB SCR frequency such as V vertical or H horizontal 4 To obtain the high band we no longer activate the 22KHz since it will be the LNB SCR itself to understand by means of the transponder frequency we will send a Fr TP lt 11 750 low band b Fr TP 11 750 high band DG OHM UNAOHM TECHNOLOGY 24 11 6 LTE The LTE function will analyze the best coexistence of digital terrestrial signals with the latest LTE signals which because of their frequency and power without proper protection would risk interfering with the last available MUX DVB T This function will help to calibrate the LTE signal protection filters or to assess any performance of those used ru P To activate the LTE function press and hold e select LTE and press ex The instrument will automaticallv set the SPAN values and more selective filters to analvze the best of their coexistence The markers will then automatically be positioned on the frequencies of channel 60 and channel 61 activating continuous calculation in real time comparing the power of channel 61 to that of channel 60 ALTE communicates the resulting ratio between the two signals in real time e ALTE gt 30 critical condi
22. iagram DG OHM UNAOHM TECHNOLOGY 20 11 3 AER ECHOES ANALYSIS FOR DIGITAL TERRESTRIAL This function allows ether analysis of mother signal behaviour and of any relative echoes which may disturb or negatively influence the MUX ECHOES are defined as all those rebounds in ether by the mother signal which bounce off surface as buildings lakes etc These then tend to get to the antenna with a signal delay with respect to the mother signal These are defined as destructive ECHOES if their delay with respect to the arrival of the mother signal the most powerful exceeds the time known as the guard interval Non destructive ECHOES are those whose delay times remain within the guard interval GUARD INTERVAL REFERENCE TABLE 8k carrier GUARD 1 32 1 4 MAXIMUM DELAY us MAXIMUM DISTANCE Km To activate the echoes analysis press the button to switch to quality measurements Once the signal has been LOCKED press the button to open the side box Select AER and press ex MENU On the AER screen photo above vou can press the button to activate the side menus for further management or viewing of the quality measurements BER MER As you can see in the photo the mother signal the most powerful will be highlighted automatically placing a yellow marker The two markers at the end show the guard interval therefore any echoes inside this area are not destructive as they remain within the guard interval Vice versa
23. ld the button to set SPAN from FULL to 5 6 7 as preferred This operation will allow us to zoom in on the signal to improve its pointing In fact by means of small movements on the antenna you can try to get a MUX that is powerful and squared This operation will allow us to perform pointing for the most power possible Picture of the real time spectrum analyzer representing the captured MUX DG OHM UNAOHM TECHNOLOGY 15 9 2 OPTIMISATION phase 2 button Once the first phase of pointing to maximum power has been performed now we have to carry out a second step to optimise the quality In fact for digital signals we do not always improve the quality with quantity this is why we carry out pointing for the quantity and then M nn for quality Press the button to activate the COFDM board which will perform BER MER etc quality measurements In this phase we will have to make small movements on the antenna to find the position that guarantees the best BER MER and NM Digital signal quality is highlighted not only in numbers ex 1 e 5 meaning error out of 100 000 symbols but also through the quality bar image which will get longer as quality improves or which will become shorter as quality gets worse until the signal is so degraded in quality that it will give the NO CARR or UNLOCKED message or the complete absence of quality In addition the quality measurement bars can light up three different colours to give an i
24. mmediate idea of the quality e GREEN optimal condition of errors few e YELLOW fair condition some errors e RED critical condition of errors Once signal quality has been optimised our quantity may have decreased but this will not influence our situation negatively NM mer 21 1 CSI PWR INDEX CFO B B RU 482 22 Picture of the terrestrial digital screen button 2 LOCKED SIGNAL LOCKED ON UNLOCKED NO CARR SIGNAL NOT LOCKED ON due to poor quality or absence of signal no TV pictures can be seen Ch BER BER channel measurement bit error ratio or rather the number of bit errors over time Pv BER Post Viterbi BER measurement bit errors over time after the correction of Viterbi MER Modulation error ratio errors on modulation NM Noise Margin guarantee margin in dB CELL Recognition code of the repeater from which the signal is being received RU Uncorrected errors DG OHM UNAOHM TECHNOLOGY 16 9 3 CLEAR AND PICTURES VIEWING phase 3 button Once phase 2 has been completed and therefore the best quality and quantity signal has been obtained simply press the button to activate the MPEG4 board which will communicate the N I T network information table list of channels contained in the MUX and will allow for selection of a television broadcaster to display clear pictures In NIT mode press the button single click select TRASPARENT mode to have the wo
25. onder TP SAT mode allowing navigation with the 4 gt buttons directly recalling all transponder settings L O frequency high or low band polarity digital parameters 3 Single click the button to activate the frequency mode allowing navigation by means of the a gt buttons or setting a number from the numeric keypad by frequency DG OHM UNAOHM TECHNOLOGY 10 Regardless which mode has been selected tuning is to be carried out with the lt gt increase or decrease keys Otherwise set values using the numerical keypad confirming with the OK button 6 2 1 AUTOMATIC SATELLITE TUNING FOR TRANSPONDER TPSAT function TRANSPONDER tuning automatic mode provides HOT BIRD 13 EST satellite as a default setting Should the need arise to change the satellite on which you are navigating in automatic mode proceed as follows 1 press and hold the button to activate the TV menu 2 press OK on Satellite ATT AUTO ATT 3 move the cursor using the A ATT buttons on the satellite to be selected and press OK 4 Single click on the button to exit from the TV menu 5 In this way the instrument will return to spectrum analyzer mode allowing navigation by transponder by means of the increase and decrease keys of the previously selected satellite the symbol will indicate the selected satellite TV MENU SATELLITE TAB CHANNELS LTE SOURCE Eutelsat 16 E Y Hot bird 13 E Astra 1
26. r installation i e dg1 1 upg in the instrument 1 DRIVER INSTALLATION Download the USB driver file e Extract the zip file contents and save them on the desktop or in a folder as with the file uploader e Connect the instrument to the PC with a cable e The message New hardware found will appear on the computer e Select the message Installation for experts and select the folder with the USB drivers e Wait for an alert of automatic recognition of the end The new HW is ready for use Attention ALWAYS USE THE SAME USB PORT Repeat the drivers procedure whenever using a different port If you do not know which COM xx port to use you can verify the type on your computer from the HARDWARE DEVICE MANAGER COM and LPT PORTS control panel 2 DG OHM FIRMWARE UPDATE e Switch off the instrument and connect it to the home network e Download the upg file for the instrument FROM WEBISTE www unaohm it download section Connect the instrument switched off to the PC via USB cable otart up the uploader programme Select the COM port from the uploader programme owitch on the instrument and after a few seconds you will see the message NSTRUMENTS ON LINE Then the preliminary version of the firmware BOOTLOADER VER x y will be detected Select the upg downloaded from the website www unaohm it Select Start on the uploader programme To verify proper updating wait for the message e Verification Successful update comple
27. ranteed for up to 5 years when the circuits are manufactured with discreet components In the event integrated circuits are used the supply of replacement parts is ensured while our supplies last and subject to their availability on the global market The repair of instruments which are no longer covered under warranty is normally carried out against payment Any request for an estimate must be done expressly upon delivery of the instrument In the event that the estimate is not accepted the expenses sustained by us for preparation of the same will be charged to the customer fixed fee In order to prevent pointless loss of time it is very important that the equipment is returned with accompanying documents and with its technical data sheet filled out entirely available from the support section of the website www unaohm it RECOMMENDATIONS It is always advisable in the event of a possible instrument fault to contact the service department toll free at 800080205 to verify the actual presence of a defect with a technician to avoid the unnecessary sending of instruments costing time and money to both customers and the company itself MISCELLANEOUS The electrical diagram of the equipment is not provided not even on request Any illustrations and diagrams inserted in the brochure are purely indicative We reserve the right to make any change which may become necessary without updating the instruction manual DG OHM UNAOHM TECHNOLOGY
28. rds superimposed on the pictures or select BLACK to have the black background with no images behind ATT AUTO ATT To select the viewing of a television broadcaster from the NIT screen simply use the A ATT button to move and then single press the button to see the clear digital pictures Clear digital terrestrial TV mode picture ENU sbutton to recall the side menus which will allow STATUS B Status bar management Activates deactivates full screen viewing CHANNEL INFO Select the broadcaster and relative information channel name video PID audio PID AUDIO To select audio for that channel DIGITAL MEASUREMENTS View the main digital measurements together with pictures Management of adjustments such as brightness contrast volume by pressing and holding From the digital TV screen press the the button which will activate the control bars ATT Use the A ATT kevs to select the various settings e VOLUME oniv in IV mode e CONIRAST e BRIGHTNESS Use the a gt keys to increase or decrease relative contents DG OHM UNAOHM TECHNOLOGY 17 10 0 SATELLITE DISH INSTALLATION The pointing of a satellite antenna must be carried out in 3 different phases 1 POINTING phase 1 button 2 OPTIMISATION phase 2 button CLEAR AND TV PICTURES VIEWING phase button To help better remember the order of the three phases please note that the numbers associated with the button precisely follow
29. ress to start up the measurement cycle relative to the active TPSAT transponders DATA LOGGER Satellite To verify measurements made select VIEW DATA with relative 1 2 3 acquisition The DATA LOGGER table will be activated allowing you to view saved data POSITION Transponder STANDARD TP POWER TBiFR DVB POW BER PVBER MER NM CFO 5 5 52 101 13 0E S2 615 _ 54 13 0E S 522 3 4e 2 15e6 61 i 13 1 2 4 Nr 1 52430 5 702 74e6 00e8 110 73 12 4 Dashes in place of measurements will appear when the signal is too critical has even been locked UNLOCKED CARR f Single click to exit from the DATA LOGGER menu DG OHM UNAOHM TECHNOLOGY 29 14 0 FIRMWARE UPDATE VIA PC To update the DG OHM field meter you will have to download and install only for first update the UPLOADER software which will then have to be kept in the PC for future updates from the website www unaohm it DOWNLOAD section This software will have the task of interfacing between the PC and the DG OHM You will also have to download and install USB drivers for the operating system present on your computer XP Vista Windows 7 so as to have a virtual COM port to use for connection between the devices At the next update you will not need to download previous files but will simply have to download the new firmware version fo
30. rs e We recommend periodically inspecting the transportation strap relative attachments and clasps which could become damaged with use Replace these as soon as signs of wear are detected e For equipment with battery installed remember 1 Never short circuit the battery It could expl ode 2 Never submerge the battery in water or throw it in a fire 3 Never bore a hole in or attempt to open the ba ttery 4 If it must be replaced use original UNAOHM batteries and dispose of the old battery in appropriate containers 5 Never connect the battery with inverted polari ty DG OHM UNAOHM TECHNOLOGY 3 1 2 PRECAUTIONS The liquid in the monitor is harmful In the event the module breaks with possible leakage of the liquid we recommend not touching it with your hands or other parts of the body particularly with the eyes or mouth As a precaution immediately wash with water and soap Do not expose the LCD monitor to direct sunlight for an extended period of time or to intense ultraviolet rays These can deteriorate it Keep the equipment in a location with temperatures higher than the minimum prescribed for storage Otherwise the liquid in the crystal will solidify causing damage to the monitor The same goes for temperatures higher than the maximum the liquid in the crystal returns to the isotropic state and this process 15 not reversible One of the most frequent causes for technical support intervention is internal short circuits
31. s to carry out special functions to particularly analyze further aspects in addition to the measures themselves 11 1 3 IN 1 FUNCTION This particular function allows users to obtain a complete analysis on a single screen both in terrestrial and in satellite Ch BER 00e 09 INFORMAZIO i NID 0001 O P 19 2 i ib PY BER e 08 i NM dB H MER 13 0 dB SNR 13 0 dB MODO SYMB R 22000 PUR INDEX OK CFO 1 8 RU 00000 00h600m305 gt SE M 2 PROGRAMMI FREQ PR POW dBuy Vec ATT E OLI P 10803 0 5s 48 2 HL nee To activate this function simply position the MARKER at the middle of the MUX or a fe TRANSPONDER and single click on E The screen specified above will be displayed The screen will be divided in 3 keeping the real time spectrum analyzer in the middle with all real time digital measurements on the left side and NIT with all information relative to the signal on the right side of the screen allowing for overall viewing of all information This function can also be used for satellite to discover the orbital position of an unknown signal 11 2 CONSTELLATION To activate a constellation diagram which will allow for a graphical representation of the MENU ree quality of the signal simply single click the button from the digital screen press E both terrestrial and SAT This operation will activate the side boxes where you can select CONST Constellation d
32. s within the production tolerances of the monitor manufacturer The specified explanations are understood to be with the equipment at running temperature in other words 10 minutes after start up Do not drop the equipment or subject it to strong shocks If the instrument is transported in a vehicle place it on a non rigid Support in order to avoid strong vibrations Before using the instrument read the instructions contained in this user manual carefully DG OHM UNAOHM TECHNOLOGY 4 e The instrument may operate besides in a horizontal position also in a vertical position resting on the bottom e t is strongly recommended to regularly perform at least annually the periodic functional test on the instrument accompanied by any necessary calibration We also recommend replacing worn straps or bags to prevent accidents as indicated in the previous paragraph 1 1 2 INTRODUCTION The DG OHM Compact is the UNAOHM model which best meets installer requirements of size weight and ease of use while at the same time faithfully maintaining UNAOHM performance real time continuous coverage 45 2 250 MHz spectrum analyzer The DG OHM Compact is available in the following configurations DG OHM HD DVB T DVB S S2 4 DG OHM FULLHD DVB T T2 DVB C DVB S S2 MPEG4 Digital configuration table DG OHM DVB T DVB T2 DVB C DVB S PICTURES NIT DVB Fm OK MPEG4 UPGRADABLE LATER 2 1 METHOD OF USE The DG OHM
33. ted correctly e Verification failed update not completed correctly e Click on Restart in the uploader programme to re start the instrument e Close the uploader programme and disconnect the instrument If you encounter problems during the upgrade repeat the operation If problems persist contact UNAOHM technical support DG OHM UNAOHM TECHNOLOGY 30 14 WARRANTY The conditions of warranty are stated in the GENERAL CONDITIONS OF SALE available for consultation at www unaohm it Revision operations are carried out by Technical Support at our facility located at Via G Di Vittorio 49 20068 Peschiera Borromeo Milan where the units must be sent Shipment must be carriage unpaid with adequate packing preferably in the original packing in order to prevent damage during transportation In order to take advantage of the warranty a copy of the invoice or fiscal sales receipt relative to the purchase of the instrument must be produced The warranty will be considered void in case of tampering modifications or repairs carried out by unauthorised personnel The power batteries and piles are not included in the warranty SERVICE NOT COVERED UNDER WARRANTY We are available for our esteemed customers for the repair of instruments manufactured by us even after the warranty period to restore the equipment to its original condition as long as it is economically convenient The availability of mechanical and electronic spare parts is gua
34. tically calculate the attenuation cell to measure level or power To activate press and hold the aT button from spectrum analyzer mode The attenuation cell value will be indicated in the status bar under ATT DG OHM UNAOHM TECHNOLOGY 12 STATUS BAR Channel tpsat Power level Vcc voltage 69800 49 03 866 20 8 0 MENU Some buttons when pressed and held activate a menu relative to the button which permits further operations to be performed 8 1 MAIN MENU Press and hold the MENU 5 Displays all information on SW versions HW components present S N etc Permits the setting of pre defined L O or USER L O Language selection Italian English French German Spanish Activates or deactivates the beep heard when keys are pressed Sets the spectrum as classic line combined menu button to activate the main menu 8 2 DIGITAL MENU Een Press and hold the digital measurements button to activate the selection menu OFDM Activates the COFDM board for DVB T DVB TS full hd only digital terrestrial measurements QAM Activates the QAM board for DVB C full hd only for digital measurements via cable 8 3 TV MENU Press and hold the 73 TV button to activate the selection menu Satellite Displays satellite list TPSAT in order to select the one that will be used in SAT mode Channels table To view and select the suitable channel table Italy default Activates specific LTE function to better con
35. tion filter not working properly or absent e ALTE just under 30 filter working just enough e ALTE lt 25 filter working very well LI Mo 7 H6 d0 44 3 1 9 3 FREQ 794 00 DG OHM UNAOHM TECHNOLOGY 25 12 0 PROGRAMME MEMORIES The DG OHM model allows the user to save 50 programme memories from PROO to PR49 mixed between satellite and terrestrial as desired The saved programme memory can be read or recalled in the status bar under PR 12 1 SAVING PROGRAMME MEMORIES To save a programme memory proceed as follows 1 Set the instrument to spectrum analyzer mode 2 Tune and set the instrument with the parameters to be saved frequency LNB voltage channel digital rg meters etc 3 Press and hold 7 The table of programmes will appear and will allow the user to manage programme saving and deleting 4 Single click 7 to exit from the programme table 12 2 PROGRAMME TABLE Press and hold in spectrum analyzer mode to activate the programme table The status relative to programme content to be saved will be indicated in the first table at the top Terrestrial programme STATUS 49 TA 698 00 DVB T 8M OFF Channel Frequency Standard Chbw Voltages Satellite programme STATUS Transponder Frequency Standard Symbol rate Polarity ATT AUTO ATT Use A ATT to select where to save the programme Use b to highlight the SAVE DELETE field If the memory is free SAV
36. trol filter functionality and the coexistence of digital terrestrial signals with LTE signals Source Allows the selection of video input for decoder testing or EXT video camera selection DG OHM UNAOHM TECHNOLOGY 13 8 4 DiSEqC MENU Press and hold the DSQ button to activate the DiSEqC menu Sets and transmits commands to switch DiSEqC on 2 satellites Sets and transmits commands to switch DiSEqC on 4 satellites Sets the DiSEqC level between 1 0 1 1 2 0 Opens the DiSEqC list with all available commands Allows the user to move drive or manage a DiSEqC motor DiSEqC SCR Activates the SCR function for control of the LNB SCR DiSEqC is a registered trademark of EUTELSAT 8 5 PROGRAMME MENU Press and hold the 7 PR button to activate the programme management menu 8 6 LNB MENU Press and hold the LNB button to activate the selection menu LNB Sets the 4 polarities for driving the LNB VH VL HH HL Activates amperometric mode measures absorption of devices connected to the BNC Auto recovery Automatic function for short circuit resolution 8 7 DATA LOGGER MENU fe Press and hold the s button to activate the selection menu DATA LOGGER Instant Allows viewing of instant measurements Allows start up or viewing of the UHF DATA LOGGER from CH 21 to CH 60 Satellite Allows start up or viewing of the Satellite DATA LOGGER for the stored TPSAT DG OHM UNAOHM TECHNOLOGY 14 9 0 TERRESTRIAL
37. ual 1 Instrument container case 3 2 OPTIONAL ACCESSORIES NG 500 External noise generator FCV 300 2 3 GHz Down converter Professional transport carrying case DG OHM UNAOHM TECHNOLOGY 4 KEYBOARD Button Single Press Press and Hold UE Stored programme reca Programme tae __ _ _ B 3 in 1 spectrum digital measurements On the digital screen stores instant 5 measurements and in spectrum opens Data Logger Activates modifications of terrestrial CH Saches tere ra PAINTER and satellite TP Sends DiSEqC command DiSEqC menu LNB On Off and voltage regulation Menu with LNB settings Es In spectrum increases attenuation and A in menus moves the cursor In spectrum decreases frequencv and A T y Fast decrease channel and in menus modifies options EJ selection Adjustments menu In spectrum increases frequency and a qt y Fast increase channel and in menus modifies options In spectrum decreases attenuation and v Automatic attenuator menus moves the cursor o eec Instrument 4 1 STATUS BAR The status bar at the bottom of the screen superimposes all main information for constant viewing You can make it transparent in T V pictures mode by simply pressing single click the button and modifying the BLACK or TRANSPARENT choice in the box In addition the status bar will change colour depending on the environment to be meas
38. ured 1 Red power measurements for digital terrestrial 2 Qreen level measurement CHBW 1 MHz for terrestrial band analogue signals 3 Light blue level measurements for satellite band analogue signals 4 Blue power measurements for digital satellite Frequency Channel tpsat Power level Vcc voltage 698 00 49 03 866 20 DG OHM UNAOHM TECHNOLOGY 8 5 INSTRUCTIONS FOR USE 5 1 POWER The DG OHM Compact can be powered 3 ways e voltage alternating from 90V to 260V by means of included external power supply e Li lon battery which when fully charged has an autonomy of more than 5 hours e external continuous voltage between 11 5V and 15V with current of at least 5 2 START UP AND SHUT DOWN The instrument turns on and off by holding down the button for a few seconds 5 3 BATTERY USE The battery charges while the instrument is in stand by with the power on 2 LEDs which switch on depending on charging conditions are found on the front of the instrument above the 4 button e red LED on instrument off with charging battery e green LED on instrument off with battery fully charged e LED off instrument on Some important notes on battery use e Before using new batteries it is a good idea to perform three complete charging and discharging cycles e To view the battery charge status and therefore residual autonomy see the battery icon on the upper left of the screen When the battery charge is low
Download Pdf Manuals
Related Search