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Manual - Test Equipment Depot

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1. Carr 650 00 MHz Noise 655 0 MHz Power 44 0 dBuV C N 12dB Figure 29 Carrier to Noise measurement in Spectrum mode digital channel To define the frequency to measure the noise select the Reference noise function in the Spectrum functions menu and press the rotary selector Next again in the Spectrum mode turn the rotary selector to place the marker on the frequency where you want to measure noise level or press key 31 current reference noise value will be erased and using the keyboard introduce the new value Finally accede to the functions menu again and execute the Carrier function so that you can tune new carrier frequencies by turning the rotary selector When C N measuring mode is selected on the lower part of the image appears the tuned frequency channel Carr the noise frequency Noise the carrier Level if analogue mode is selected or the channel Power if digital mode is selected and the carrier to noise ratio C N 4 10 2 3 Measuring the Power of Digital Channels Channel Power In the Spectrum Analyser mode the PROLINK 2 Premium measures digital channel power using an Integration method between channel limits which are defined by the user To show the interest of this method imagine a spectral distribution like the one shown in the following figure channel bandwidth is 8 MHz defined by the markers If channel power is measured in TV operation mode different readouts will be obtained dependin
2. The user is only authorized to carry out the following maintenance operations Battery replacement On the Maintenance paragraph the proper instructions are given Any other change on the equipment should be carried out by qualified personnel When using the power adaptor the negative of measurement is at ground potential Donotobstruct the ventilation system of the instrument Use for the signal inputs outputs specially when working with high levels appropriate low radiation cables 06 2004 Page 9 USER S MANUAL PROLINK 2 Premium Follow the cleaning instructions described in the Maintenance paragraph X Symbols related with safety Mu DIRECT CURRENT ALTERNATING CURRENT DIRECT AND ALTERNATING GROUND TERMINAL PROTECTIVE CONDUCTOR FRAME TERMINAL EQUIPOTENTIALITY ON Supply d OFF Supply 2 G Wilk d DOUBLE INSULATION Class II Protection CAUTION Risk of electric shock CAUTION REFER TO MANUAL E So FUSE Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 Page10 FAX 781 665 0780 TestEquipmentDepot com 06 2004 2 2 Descriptive Examples of Over Voltage Categories Cat Low voltage installations isolated from the mains Cat Il Portable domestic installations Cat Ill Fixed domestic installations Cat IV Industrial installations 06 2004 Page 11 USER S MANUAL PROLINK 2 Premium 3 INSTALLATION 3 1 Power Supply The PROLINK 2 Premium is a
3. select the Video Polarity function and press the rotary selector 4 to activate it The monitor will show a screen labelled POLARITY displaying two possibilities Positive Video and Negative Video Turn the rotary selector 4 mark the option you require and finally press to activate Page 48 06 2004 AX USER S MANUAL PROLINK 2 Premium A PROM 4 9 2 12 Verification of distribution networks SAT IF Test This application allows to verify easily the TCI features Telecommunications Common Infrastructures before the antennas and the head end devices are operative The procedure allows to evaluate the frequency response of a whole FI distribution network by means of two steps NOTE For this application the use of PROMAX s RP 050 FI simulator is suggested for which it has been specially designed 1 CALIBRATION Connect the RP 050 directly to the PROLINK 2 Premium using the BNC F adapter Power on the RP 050 through the PROLINK 2 Premium it is necessary to set the External supply function see section 4 8 External Units Power Supply pressing key 27 and the rotary selector 4 for setting a voltage of 13 V Finally select the SAT IF TEST application on FUNCTIONS menu from TV mode and SAT band when it appears the screen from figure 21 press the rotary selector 4 to accede to the FUNCTIONS menu and using the rotary selector 4 to accede to the Calibrate function figure 22 Wait for some seconds until the calibration p
4. From the TV operating mode analogue mode press key 26 The screen will show the SOUND menu with the types of sound available Turn the rotary 6 selector 4 choose the type of sound you wish and then press key 26 or the rotary selector 4 to activate it Table 4 shows the different options for the sound mode Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 06 2004 FAX 781 665 0780 TestEquipmentDepot com Page 63 USER S MANUAL PROLINK 2 Premium Sound carrier 4 5 MHz above the picture carrier 4 50 Terrestrial 5 50 Sound carrier 5 5 MHz above the picture carrier Terrestrial Selects the second carrier in DUAL or STEREO transmissions at 5 74 5 74 MHz of the picture carrier Terrestrial 5 80 Sound carrier 5 8 MHz above the picture carrier Satellite Sound carrier 6 0 MHz above the picture carrier Terrestrial Terrestrial 6 50 Sound carrier 6 5 MHz above the picture carrier Satellite 6 65 Sound carrier 6 65 MHz above the picture carrier Satellite 7 02 Sound carrier 7 02 MHz above the picture carrier Satellite Continuous tuning 4 00 a 9 00 MHz with narrow sound detection filter Terrestrial NTUN 449 kHz Satellite Continuous tuning 4 00 a 9 00 MHz with broad sound detection filter Terrestrial 240 kHz Satellite NICA NICAM decoding Terrestrial AM AM demodulation Terrestrial FM Demodulaci n FM Terrestrial Terrestrial LV Tone whose frequency varies with
5. 31 6 uV to 1 V Reading Auto range reading is displayed on an OSD window Digital Absolute value calibrated in dBu V dBmV or dBm Analogue Relative value through an analogue bar on the screen Measurement bandwidth 230 kHz Terrestrial band m 4 MHz Satellite band maximum band ripple 1 dB Audible indicator LV audio A tone with pitch proportional to signal strength Accuracy Terrestrial bands 1 5 dB 30 120 dBuV 48 25 861 MHz 22 C 5 C Satellite band 1 5 dB 40 100 dBuV 900 2150 MHz 22 C 5 C Overrange indication TL MEASUREMENTS IN TV MODE Terrestrial bands Analogue channels Level Video Audio ratio and Carrier Noise ratio Auto and Referenced Digital channels Channel power Auto and Carrier Noise ratio Auto and Referenced and Bit Error Rate BER for COFDM modulated signals Satellite band Analogue channels Level and Carrier Noise ratio Auto and Referenced Digital channels Channel power Auto and Carrier Noise ratio Auto and Referenced and Bit Error Rate BER for QPSK modulated signals SPECTRUM ANALYSER MODE Satellite band 20 dBuV to 120 dByV 10 uV to 1 V Terrestrial bands 20 dByV to 120 dByV 10 uV to 1 V Measurement bandwidth Terrestrial 50 kHz 230 kHz 1 MHz selectable Satellite 50 kHz 230 kHz 4 MHz selectable Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 Page 4 FAX 781 665 0780 TestEquipmentDepot com 06 2004 USER S MANUAL PROLINK 2 Premium Spa
6. If a configuration is stored in a memory location already containing information that data will be lost 3 Optional If you wish to assign a name to a memory position press key 31 the fist character of the name will blink turn the rotary selector 4 and the different characters will appear in the first position of the configuration name When you have chosen the first character press the rotary selector again 4 to automatically move on to the second character Repeat the process for a maximum of four characters 4 Optional A memory position may be assigned to the name of a previously edited DiSEqC program thereby associating it with the execution of the memorised measuring configuration Whenever it is established a satellite configuration will appear the DiSEqC parameter In order to activate it accede by means of the key 31 and pressing the rotary selector 4 to view the list of edited programs See section 4 9 2 18 DiSEqC Command Generator and select the program to execute Figure 32 STORE screen storing a measuring configuration S 5 Finally press 25 key or the rotary selector 4 and the configuration will be stored If any other key is pressed an error will be indicated and the memory will not be updated 4 12 2 Retrieving a Configuration RECALL Press the 7 25 key The screen RECALL will appear on the monitor which shows the different parameters of each measuring configuration stored Tu
7. PROLINK 2 Premium also offers the possiblity of measuring the modulation error ratio MER for QPSK signals Once the QPSK signal parameters have been defined you can access to the digital mode function menu by pressing the rotary selector 4 then turn it to select QPSK setup function and finally press it again The monitor will show a screen displaying two possibilities BER before FEC and MER then turn the rotary selector 4 to select the desired option and finally press it to confirm Figure 17 BER measuring screen for QPSK modulated signals IMPORTANT REMARK DVB S channels tuning may require an adjusting process It is recommended to follow next procedure 1 From the spectrum analyser mode tune the channel at its central frequency 2 Switch to TV mode BER measuring mode 3 If in the lower line of the screen does not appear MPEG 2 message and consequently BER is unacceptable by turning the rotary selector deviate the tuning frequency until MPEG 2 message appears Finally tune channel again to minimize the frequency deviation which optimizes the BER and therefore minimize the BER If it is not possible to detect any MPEG 2 channel make sure that digital signal parameters are correctly defined and if signal level is too low check that the 30 dB attenuator is not activated Attenuator 0 dB Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 06 2004 FAX 781 665 0780 TestEquipmentDepot c
8. To change the decoded channel access the TV mode functions menu select the Nicam channel function and press the rotary selector to activate it The monitor will show a screen labelled NICAM offering two possibilities Channel A and Channel B Turn the rotary selector 4 to the desired option and finally press to activate 4 9 2 14 Search Level Use this function to modify the threshold level of the automatic station search To change the level place the cursor on the Search level field and press the rotary selector 4 The monitor will display a window showing the current value of the search level to alter it press key 31 and enter the new value on the keyboard Confirmation is automatic on entering the second digit 4 9 2 15 Teletext When the Teletext function is selected Teletext information appears on the monitor if a transmitter with this information is tuned The first page to appear on the screen is always page 100 If Teletext data is received a counter located on the upper edge of the screen indicates the page that is being processed To change active page press key B 31 and introduce the new number using the numeric keyboard third digit acts as confirmation Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 06 2004 FAX 781 665 0780 TestEquipmentDepot com Page 51 A PROM USER S MANUAL PROLINK 2 Premium If the page requested is not included in the Teletext service of the transmitter the s
9. V 15 V 18 V 24 V terrestrial TV and 13 V 15 V 18V 13 V 22 kHz 15 V 22 kHz 18 V 22 kHz satellite TV Furthermore the instrument comes with an EUROCONNECTOR or Scart connector for audio video input output The PROLINK 2 Premium is powered by rechargeable battery or connected to the mains through the supplied external DC power charger It also incorporates a RS 232C interface which enables the user to connect the instrument to a PC for data recording remote control of the instrument and to a printer in order to print out the spectrum 1 2 Specifications A CONFIGURATION FOR MEASURING LEVEL AND POWER TUNING Digital frequency synthesis Continuous tuning from 45 to 862 MHz and from 900 to 2150 MHz Tuning modes Frequency Channel or Memory Channel plan configurable on demand Resolution 45 862 MHz 50 kHz 900 2150 MHz 500 kHz 50 kHz Automatic search Threshold level selectable Memory 99 positions for measurement configurations DiSEqCTM is a trademark of EUTELSAT 06 2004 Page 3 USER S MANUAL PROLINK 2 Premium RF INPUT Impedance 750 Connector Universal with BNC or F adapter Maximum signal 130 dBuV Maximum input voltage DC to 100 Hz 50 V rms powered by the AL 103 power charger 30 V rms not powered by the AL 103 power charger 5 MHz to 2150 MHz 130 dBuV LEVEL MEASUREMENT Measurement range Terrestrial TV amp FM bands 20 dBuV to 120 dBuV 10 uV to 1 V Satellite TV band 30 dBuV to 120 dByV
10. decoder two error correction methods are applied Obviously each time we apply an error corrector to the digital signal the error rate changes therefore if we measure the error rate at the output of the COFDM demodulator at the output of the Viterbi decoder and at the output of the Reed Solomon decoder we obtain nothing more than different error rates The PROLINK 2 Premium provides the BER after Viterbi and the number of Wrong packets received after Reed Solomon BER after Viterbi Wrong packets TUNER DEMO VITERBI REED SOLOMON EN Figure 12 COFDM reception system The BER measurement is provided in scientific notation i e 3 1 E 7 means 3 1x10 that is to say 3 1 wrong bits of each 10000000 and through a graphic bar as its length is smaller the signal quality will be better The analogue representation is done on a logarithmic scale not linear that is to say the bar divisions correspond to the exponent of the measurement With the aim to have a reference about the signal quality it is considered that a system has a good quality when it decodes less than one non correctable error for every transmission hour This border is known as QEF Quasi Error Free and it corresponds approximately to a BER after Viterbi of 2 0E 4 BER 2 0x1 0 that is to say 2 wrong bits of each 10000 This value is marked on the measurement bar of the BER and therefore BER for acceptable signals must be at the left side of this mark In the
11. following list The messages are exposed from less to more fulfilment of the MPEG 2 standard No signal received No signal has been detected Timing recovered Only it is possible to recuperate the symbol time AFC in lock The system automatic frequency control can identify and lock a digital transmission TDT but its parameters can not be obtained It can be due to a transitory situation previous to the TPS identification Transmission Parameter Signalling or well to a TDT transmission with an insufficient C N ratio TPS in lock The TPS Transmission Parameter Signalling are decoded The TPS are carriers 17 in the 2k system and 68 in the 8k system modulated in DBPSK containing information related to the transmission modulation and codification Modulation type QPSK 16 QAM 64 QAM Hierarchy Guard Interval Viterbi Code Rate Transmission mode 2k or 8k and Number of the received frame MPEG 2 Correct detection of a MPEG 2 signal In case of detecting a DVB signal message MPEG 2 DVB T The PROLINK 2 Premium also offers the possiblity of measuring the modulation error ratio MER for COFDM signals Once the COFDM signal parameters have been defined you can access to the digital mode function menu by pressing the rotary selector 4 then turn it to select COFDM setup function and finally press it again The monitor will show a screen displaying two possibilities CSI and MER then turn the rotary selector 4 to select th
12. from the function menu Finally press Previous for the second sub menu or Exit to quit the function menu IMPORTANT REMARK In case of erroneous selection of a language the user must follow the following steps to accede again to the language selection menu Language Idioma Sprache Lingua o Langue From the TV mode press the rotary selector it will appear the first sub menu of functions Functions Funciones Funktionen Funzioni Fonctions turn the rotary selector to move the cursor to the position Next Siguiente N chst Seguente or Suivant and press it to accede again to the second sub menu Repeat the operation to accede to the third sub menu Finally move the cursor to the fourth line of the sub menu and press the rotary selector to accede to the language selection menu Also you can access to the language selection menu activating the reset process for it the reset button 38 must be pressed when the instrument is off In Spectrum Analyser mode the first sub menu displays the following functions Band switching Permits to switch from terrestrial 45 862 MHz to satellite band 900 2150 MHz and vice versa Span Defines the frequency range displayed between Full the entire band 500 MHz 200 MHz 100 MHz 50 MHz 32 MHz 16 MHz 8 MHz and 4 MHz Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 06 2004 FAX 781 665 0780 TestEquipmentDepot com Page 17 Page 18 Reference l
13. of the front panel and particularly the viewfinders alcohol or its derivatives these products can attack the mechanical properties of the materials and diminish their useful time of life Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 06 2004 FAX 781 665 0780 TestEquipmentDepot com Page 75
14. offers two different modes in TV mode C N Auto The PROLINK 2 Premium defines automatically the frequency where noise level is measured according with fnoise ftuning Ve Channel BW C N Reference noise The user defines the frequency where noise level is measured by means of the Reference noise function This frequency will be used to measure noise level for all channels Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 06 2004 FAX 781 665 0780 TestEquipmentDepot com Page 47 USER S MANUAL PROLINK 2 Premium To select C N mode access the TV mode functions menu turn the rotary selector 4 to the C N setup function and press to activate it The monitor will show a screen labelled C N SETUP displaying the two available options as well as the Exit option Turn the rotary selector 4 to the mode you require then press to activate it 4 9 2 9 Channel Bandwidth Channel BW To measure the power and C N ratio of digital channels as well as the C N ratio of satellite band channels you first need to define the channel bandwidth To modify the bandwidth access the TV mode functions menu and select the Channel BW function press the rotary selector 4 to activate it The CHANNEL BANDWIDTH screen will be displayed To alter the bandwidth value press key 31 the bandwidth will disappear and using the keyboard you will be able to enter the new digital channel bandwidth in MHz and with two decim
15. portable instrument powered by one 7 2 V 11 Ah Li lon battery There is also an external DC charger provided for mains connection and battery charging 3 1 1 Operation using the External DC Charger Connect the external DC charger to EXT SUPPLY 38 on the PROLINK 2 Premium side panel Connect the DC charger to the mains Then press the PROLINK 2 Premium on off key 1 The level meter is now in operation and the battery is slowly charged When the instrument is connected to the mains the CHARGER indicator 7 remains lit 3 1 2 Operation using the Battery For the device to operate on the battery disconnect the power cable and press the on off key 1 The fully charged battery can power the equipment for more than 2 hour non stop If battery is very weak the battery cut off circuit will prevent the device from functioning at the same time the beeper will be heard In such a situation battery must be recharged immediately Before taking any measurements you have to check the charge state of the battery by checking the battery charge level indicator BATTERY 8 on the front panel or Battery amp Lnb function on the TV mode functions menu see section 4 9 2 3 Batteries and External Units Power Supply The BATTERY 8 led indicates whenever the equipment is off and connected to the external DC charger in a qualitative manner the battery charge condition For battery charge levels close to 100 it remains lit in green co
16. see section 4 14 1 Handshake and control lines Switch off the power to both instruments before connecting To print the spectrum showed select the function Print on the function menu in the Spectrum Analyser mode Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 Page68 FAX 781 665 0780 TestEquipmentDepot com 06 2004 MAX USER S MANUAL PROLINK 2 Premium 4 14 1 Handshake and Control Lines Next is described the handshake and control lines used by the PROLINK 2 Premium The following parameters are used for printing through the serial port Rate 19 200 bauds Data bits 8 bits Parity None Stop bits 1 To modify the printer parameters see 4 14 2 CI 23 Set up The control lines used are DATA TRANSMIT PROLINK 2 Premium pin 3 To send data to the printer CLEAR TO SEND PROLINK 2 Premium pin 8 Data transfer control Data are sent only when this line is active DATA TERMINAL READY PROLINK 2 Premium pin 4 This line is permanently active in order to indicate the establishment of the communication Connections The cable between the PROLINK 2 Premium and the printer must have the following connections PC CONNECTOR LEVEL METER CONNECTOR D 25 type female D 9 type female SHIELD GROUND 1 DATA TRANSMIT 2 2 DATA RECEIVE DATA RECEIVE 3 lt 3DATA TRANSMIT REQUEST TO SEND 4 gt 1 CARAIER DELEGI 5 SI 4 DA i DATA SET READY 6 GROU
17. the currently tuned carrier C N Ratio between the modulated signal and the equivalent noise power for a same bandwidth Auto or Referenced Satellite band Digital channels Channel power Automatic method C N Ratio between the modulated and the equivalent noise power for a same bandwidth Auto or Referenced BER QPSK Obtains the error rate for the signal found in the tuned channel After processing for a few seconds the screen on the PROLINK 2 Premium shows the type of modulation the BER error rate for the digital signal before error correction BER before FEC or the MER measurement modulation error ratio selectable by means of the option QPSK Setup from functions menu as well as the BER after error correction BER after Viterbi the latter two are shown in analogue form as a bar graph The instrument also shows the channel or frequency with the corresponding deviation and information on the type of digital Multiplex detected MPEG2 Network Provider Bouquet which appears cyclically on the screen 2 To change the measurement mode press key 22 The screen will display a menu with the measurement modes which can be selected Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 06 2004 FAX 781 665 0780 TestEquipmentDepot com Page 27 A PROM USER S MANUAL PROLINK 2 Premium Figure 4 Measuring mode selection satellite band analogue channels To select a measurement mode turn the rota
18. the detected NICAM is dual and the error rate is below 1 e 5 4 12 Measurement Configuration Memories To facilitate measurement the PROLINK 2 Premium is able to store up to 99 configurations in an internal memory In this way it is possible to select the most common transmissions in a work area with their corresponding configurations quickly and easily The following parameters are stored in each configuration the name assigned to the configuration frequency or channel number TV system type of measurement external units supply voltage VLNB measurement units sound parameters LNB oscillator frequency channel bandwidth digital symbol rate digital code rate digital and spectral inversion digital It is possible to associate a specific measurement configuration with the execution of a previously edited DiSEqC program see 4 9 2 18 DiSEqC Commands Generator 4 12 1 Storing a Measurement Configuration STORE The process of storing a measurement configuration is the following 1 Select the configuration you want on the PROLINK 2 Premium freq channel band etc 2 Press key 25 until the monitor displays the STORE screen Check the configuration parameters Then turn the rotary selector 4 to the memory number that you wish to store the configuration in from 1 to 99 This number corresponds to the column headings of the Datalogger function Page 66 06 2004 USER S MANUAL PROLINK 2 Premium AX PROM
19. the signal level Satellite OFF Suppresses the sound Terrestrial Satellite Table 6 Sound modes BTUN When you select the NTUN continuous tuning using a narrow detection filter and BTUN continuous tuning using a broad detection filter options the screen displays a window showing the frequency deviation of the sound carrier this is variable between 4 00 MHz and 9 00 MHz To define it turn the rotary selector 4 to the desired frequency deviation and press to validate Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 Page 64 FAX 781 665 0780 TestEquipmentDepot com 06 2004 USER S MANUAL PROLINK 2 Premium AX PROM 4 11 1 FM function access to RDS service The FM function allows to access to the information associated with the Radio Data System RDS in case of emitting in the frequency of selected demodulation This technique offers data in the receiver screen relative to the identification of tuned transmitters network Service of Program PS as well as after few seconds short messages Radio TEXT RT the program type PTY the traffic announcements TA the program identification PI and traffic program identification TP that emits each service The PROLINK 2 Premium also shows the level of the received signal and tuned FM frequency as well as the balance of the number of received erroneous blocks EBB See figure 31 RDS EBB 0 PS BCN Pl E239 TA OFF TP ON PTY INFORMAT
20. 3 31 the current frequency value will disappear and using the keyboard you will be able to enter the new reference noise frequency in MHz and with two decimals figures This frequency also can be modified in the Spectrum operation mode see 4 10 2 2 C N Referenced Measurement The PROLINK 2 Premium carries out C N ratio measurement in four different ways according to the carrier type and the band in use A Terrestrial band analogue carrier Carrier level is measured using a quasi peak detector 230 kHz BW Noise level is measured with an average detector and corrected to refer it to channel equivalent noise bandwidth according to the standard in use B Terrestrial band digital carrier Both measurements are done with an average detector 230 kHz and the same corrections are introduced on them bandwidth corrections C Satellite band analogue carrier Carrier level is measured using a quasi peak detector 4 MHz BW Noise level is measured with an average detector 4 MHz and corrected to refer it to channel bandwidth D Satellite band digital carrier Equivalent to case B but now using the 4 MHz BW filter Page 32 06 2004 AX USER S MANUAL PROLINK 2 Premium A PROM On selecting the Carrier Noise measurement mode the screen displays the following information Figure 8 Carrier to noise ratio measurement Auto mode As well as the video carrier noise level ratio 20 1 dB in previous figure the frequency
21. 4 10 1 12 Batteries and External Units Power Supply BATTERY amp LNB See 4 9 2 3 section 4 10 1 13 Exit Exits from the Spectrum Analyser function menu 4 10 2 Selecting the Measurement Mode The Spectrum Analyser mode permits to make different measurements at the same time you see the signals present in the band The types of measurements available are Terrestrial band Analogue channels Level Level measurement of the currently tuned carrier C N Video carrier to noise ratio referenced to a noise frequency defined by the user through the Reference Noise function Page 60 06 2004 USER S MANUAL PROLINK 2 Premium Terrestrial band Digital channels Channel power Integration method t consists of scanning the entire channel calculating the contribution of each portion of the spectrum to the whole C N Referenced Channel level to noise ratio referenced to a noise frequency defined by the user through the Reference Noise function Satellite band Analogue channels Level Level measurement of the currently tuned carrier C N Video carrier to noise ratio referenced to a noise frequency defined by the user through the Reference Noise function Satellite band Digital channels Channel power Integration method C N Referenced Channel level to noise ratio referenced to a noise frequency defined by the user through the Reference Noise function Like in the TV mode to select the type of measure press key 22 t
22. 9 1 Selecting the Measurement Mode MEASURE sees 26 4 9 1 1 Measuring the Video Carrier Level Level sss 28 4 9 1 1 1 Changing the measurement information format 29 4 9 1 1 2 Selecting TV Mode TV LV SY TV MODE eee 29 4 9 1 2 Measuring the Video Audio Ratio V A esses 31 4 9 1 3 Measuring the Carrier Noise Ratio C N eesseee 32 4 9 1 4 Measuring the Power of Digital Channels Channel power 34 4 9 1 5 BER measurement mode selection eese 35 4 9 1 5 1 Measuring BER of COFDM Digital Channels COFDM 36 4 9 1 5 2 Measuring BER of QPSK Digital Channels QPSK 40 4 9 2 TV Mode Functions Menu eeseeeeeneennenen eene 44 4 9 2 1 Selection of the RF Band Band switching 45 4 9 2 2 Selection of the TV System and Standard System amp Standara 45 4 9 2 3 Battery and External Units Power Supply BATTERY amp LNB 46 4 9 2 4 nov Mri 46 4 9 2 5 Selecting the Channels Table Channel set sssse 47 USER S MANUAL PROLINK 2 Premium 4 9 2 6 Measurement Units eene 47 4 9 2 7 Power Off Mode Manual power ssssseeeenn 47 4 9 2 8 Ed E M 47 4 9 2 9 Channel B
23. DC charger operation indicator When batteries are installed the battery charger is automatically activated BATTERY Battery charge level indicator When the instrument is switched off and connected to the mains the battery has three states red if the battery charge level is below 50 amber if it is greater than 50 and green if the battery is fully charged MONITOR MAIN KEYBOARD 12 keys to select functions and entering numeric data Te 0 5 e E one ane re 2 Main keyboard FAX 781 665 0780 TestEquipmentDepot com Page 19 7 8431 99 Washington Street Melrose MA 02176 20 21 22 23 24 25 Page 20 USER S MANUAL PROLINK 2 Premium DIGITAL ANALOGUE MODE SWITCHING Switches between analogue and digital mode Key number 0 to enter numeric data SPECTRUM TV MODE SWITCHING Enables switching between the TV and the Spectrum Analyser operation mode and back again Key number 1 to enter numeric data 2 E MEASURE Enables the type of measurement to be selected The types of measurements available depend on the band the standard the options included and the operating mode Key number 2 to enter numeric data Cut TV MODE Selects the information displayed on screen in TV operation mode LV measurement Key number 3 to enter numeric data e SEARCH This is the function for automatic station search Starting at the present frequency or channel it s
24. Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 Page 56 FAX 781 665 0780 TestEquipmentDepot com 06 2004 MAX USER S MANUAL PROLINK 2 Premium A PRO If there is a chrominance carrier defect then the television colour amplifier must function at maximum gain which could result in noise appearing all over the television screen with points of colour that disappear when the saturation control is reduced in an extreme case loss of colour may occur 4 10 1 Spectrum Analyser Mode Functions Menu In the Spectrum Analyser operation mode pressing the rotary selector 4 leads you to the next functions menu Figure 27 Spectrum Analyser mode functions menu When turning the rotary selector clockwise active option moves downwards while turning it anticlockwise active option moves upwards The downward pointing arrow at the bottom left of the menu means that there are more functions available to view these turn the rotary selector clockwise Below we describe the use of each function and its range of values 4 10 1 1 Band Switching Permits to switch from terrestrial 5 862 MHz to satellite band 900 2150 MHz and vice versa 4 10 1 2 Span This function enables selecting the displayed screen frequency range in Spectrum Analyser mode between Full the entire band 500 MHz 200 MHz 100 MHz 50 MHz 32 MHz 16 MHz 8 MHz and 4 MHz the latter one only in terrestrial bands To alter the span select the funct
25. ION RT Radio Barcelona FM 96 9 59 2 dBuV 96 90 MHz Figure 31 RDS service information 4 11 2 Tone function When the LV function is selected the speaker of the PROLINK 2 Premium permits a tone whose frequency depends on the level of the signal received This is very useful when installing antennas since the user can locate the peak signal without having to look continually at the monitor of the level meter 4 11 3 Selecting NICAM sound When the NICAM option is selected it is possible to measure the Bit Error Rate of the modulation To obtain this measurement from the TV operating mode level measurement press key Oa in order to activate the mode of maximum measurement information displayed on the screen name assigned to memory power supply to external units sound colour system TV standard level and frequency channel In the position relative to the type of Sound will appear the information about the type of NICAM according to 06 2004 Page 65 USER S MANUAL PROLINK 2 Premium Sound Type Error Type NICAM type an no NICAM is detected du dual NICAM st stereo NICAM mo mono NICAM Error indication of the bit error rate El error rate lt 1e 5 E5 1e 5 lt error rate lt 1e 4 E4 1e 4 lt error rate lt 1e 3 E3 1e 3 lt error rate lt 2 7 e 3 ET error rate gt 2 7 e 3 Therefore for example the indication Sound duEJ has to be interpreted as NICAM sound is selected
26. K 2 Premium INCLUDED ACCESSORIES 1x CB 047 or equivalent Rechargeable Li battery 7 2 V 11 Ah 1x AD 055 F F BNC F adapter 1x AD 056 F F DIN F adapter 1x AD 057 F F F F adapter 1x AL 103 External DC charger 1x DC 261 Carrying bag 1x CA 005 Mains cord OPTIONAL ACCESSORIES Cl 23 Portable printer RM 104 Remote control software RM 204 Monitoring and alarm software RM 304 Monitoring and alarm system via SMS Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 Page 8 FAX 781 665 0780 TestEquipmentDepot com 06 2004 USER S MANUAL PROLINK 2 Premium 2 SAFETY RULES N 2 1 General safety rules Use this equipment connected only to systems with their negative of measurement connected to ground potential X The AL 103 external DC charger is a Class equipment for safety reasons plug it to a supply line with the corresponding ground terminal This equipment can be used in Overvoltage Category ll installations and Pollution Degree 2 environments External DC charger can be used in Overvoltage Category Il installation and Pollution Degree 1 environments When using some of the following accessories use only the specified ones to ensure safety Rechargeable battery External DC charger Observe all specified ratings both of supply and measurement Remember that voltages higher than 60 V DC or 30 V AC rms are dangerous Use this instrument under the specified environmental conditions
27. M B G SECAM L SECAM D K Digital PAL Turn the rotary selector 4 to the desired standard and press to activate it If a digital channel is selected whether terrestrial or satellite for the measurement of the level and the carrier to noise ratio to be correct the bandwidth of the channel must be defined using the Channel BW function of the functions menu In order to change the standard of the digital signals previously you must select the corresponding analogue standard The following table shows the features of the analogue terrestrial channel standards rame Bandwidth separation RH E WEGE NW C NENN CNN ee ee RENE ee eee NE Ww e pe e os e 625 50 a s o9 9 RI 625 50 6 5 a es s 5 91 Table 4 Selectable terrestrial analogue standards and their characteristics Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 06 2004 FAX 781 665 0780 TestEquipmentDepot com Page 45 A PROM USER S MANUAL PROLINK 2 Premium 4 9 2 3 Battery and External Units Power Supply BATTERY amp LNB This function allows you to check the charge state of the batteries as well as the supply current and voltage of the external units From the TV operation mode simply press the rotary selector 4 select the BATTERY amp LNB function and press the rotary selector 4 again You will see a screen like the following one Figure 19 Battery amp Lnb function The top part of the screen displays the
28. ND 7 5 GROUND CARRIER DETECT 8 4 7 REQUEST TO SEND DATA TERMINAL READY 20 4 6 DATA SEND READY 8 CLEAR TO SEND RING INDICATOR 22 9 RING INDICATOR 6789 Figure 34 Connector RS 232C PROLINK 2 Premium Pins numbering 06 2004 Page 69 USER S MANUAL PROLINK 2 Premium 4 14 2 CI 23 set up This point explains how to modify the CI 23 printer set up GI X0 que qe 1 0 Figure 35 Cl 23 keyboard 1 POWER LED 2 SET UP 3 FEED 4 ON 5 OFF To initiate the set up mode push the 2 SET UP and the 4 ON keys The 1 POWER ON LED will flash until set up mode is turned off The current parameter status will be printed The status of the DATA BITS parameter will be printed in order to modify it if necessary To select the status of the resting parameters PARITY BAUD RATE COUNTRY PRINT MODE AUTO OFF EMULATION and DTR push the 3 FEED key These parameters are selected in a sequential way To modify the status of any parameter push sequentially the 2 SET UP key Example SERIAL BAUD RATE 300 600 1200 2400 4800 9600 19200 300 When all the necessary changes have been made push the 2 SET UP and 3 FEED keys to update the configuration of the printer If no key is pressed for 15 seconds the set up mode will be terminated without changing the original parameters
29. OLINK 2 Premium from a personal computer as well as data dumping to a printer 06 2004 USER S MANUAL PROLINK 2 Premium 4 2 Adjustment of Volume and Monitor Parameters HU Repeatedly pressing key 8 sequentially activates the VOLUME CONTRAST and BRIGHTNESS On activation of a menu for a specific parameter the screen displays a horizontal bar whose length is proportional to the parameter level to modify this value simply turn the rotary selector 4 To exit the menu and validate the new value press the rotary selector 4 4 3 Selecting the Operation Mode TV Spectrum Analyser The PROLINK 2 Premium has two basic operation modes TV and Spectrum Analyser To switch from one operation mode to the other press key Uh Cai 21 In the TV operation mode the demodulated television signal is shown on screen this is the default operation mode various functions can be selected as shown in the following paragraphs In the Spectrum Analyser operation mode the screen displays the spectrum of the active band terrestrial or satellite The span the reference level and the measuring filter bandwidth are variable as will be shown in paragraph 4 10 Spectrum Analyser Operation Mode 4 4 RF Band Selection 45 862 MHz 900 2150 MHz Tuning is continuous between 45 and 862 MHz terrestrial band and between 900 and 2150 MHz satellite band There are three ways of changing the active band 1 Press the rotary selector 4 to accede to the f
30. PROGRAMME MODE Present setting are Data bits 8 Parity Nome Baud rate 19200 Country UK Print mode Text Auto off H 5 Min Emulation Standard DTR Normal Figure 36 Cl 23 setup Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 Page 70 FAX 781 665 0780 TestEquipmentDepot com 06 2004 USER S MANUAL PROLINK 2 Premium 5 DESCRIPTION OF THE INPUTS AND OUTPUTS 5 1 RF input The RF input is through the RF 37 connector on the side panel The peak signal level should never exceed 130 dBuV 5 2 RS 232C serial port The PROLINK 2 Premium incorporates an RS 232C serial port for data exchange with a PC a serial printer i e our model Cl 23 or to other devices The signals in this connector are described in Table 7 bo a a YA A 6 J Z OQ e Z S Figure 37 RS 232C connector E z z o SIGNAL Carrier detect Data Receive RxD Data Transmit TxD Data Terminal Ready DTR Ground GND Data Set Ready DSR Request to Send RTS Clear to Send CTS Ring Indicator OANOABRWND o N External view CHARACTERISTICS not connected Fixed at 12 V not connected not connected Table 7 Description of the RS 232C connector Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 06 2004 FAX 781 665 0780 TestEquipmentDepot com Page 71 USER S MANUAL PROLINK 2 Premium 5 3 Sc
31. RY amp LNB 60 LDSMEEII q 60 4 10 2 Selecting the Measurement Mode sese 60 4 10 2 1 Measuring Carrier Levels Level seen 61 4 10 2 2 Measuring the Carrier Noise ratio C N Referenced 61 4 10 2 3 Measuring the Power of Digital Channels Channel Power 62 4 11 Selecting the Sound Mode SOUND seseeneeeeeennen 4 11 1 FM function access to RDS service 4 11 2 Tone function esssssss 4 11 3 Selecting NICAM sound 4 12 Measurement Configuration Memories esee 4 12 1 Storing a Measurement Configuration STORE sess 66 4 12 2 Retrieving a Configuration RECALL sese 67 4 13 Direct Access to FUNCTIONS 2 iiri eiceeie cierta i exeo toi ede voci tieadecs 68 4 14 Printing the Spectrum 68 4 14 1 Handshake and Control Lines PEE 69 4 14 2 0 28 Selt Up i eie eh eerte ere E erre eerie ban 70 USER S MANUAL PROLINK 2 Premium 5 DESCRIPTION OF THE INPUTS AND OUTPUTS eem 71 5 1 RF input emen 5 2 RS 232C serial port 5 8 Scart DIN EN 50049 6 MAINTENANDGQGE irn ecco terrain cetera iacentes cite sens ik vens cute Lat e ausa itus 73 6 1 Internal fuses which user Cannot replace ssesseee 73 6 2 Repl
32. Test Equipment 99 Washington Street Depot Melrose MA 02176 Fax 781 665 0780 1 800 517 8431 TestEquipmentDepot com USER S MANUAL PROLINK 2 Premium ZR PROMAX TABLE OF CONTENTS ecd oicEEEMA 1 1 1 Description 1 2 Specifications irt tiet iecit eve Pr acie ee eta E EE teeta 3 2 SAFETY RULES Y 2 1 General safety rules 2 2 Descriptive Examples of Over Voltage Categories sssessss 11 3 INSTALEATIQON educa cece Sia Aig rinde sete nee analy ied 3 1 Power Supply 3 1 1 Operation using the External DC Charger seseeeeee 13 3 1 2 Operation using the Battery 13 3 1 2 1 Battery Charging 3 2 Installation and Start p iieri er territi t e i 4 OPERATING INSTRU CTIONS inciter rec cxi caes 15 4 1 Description of the Controls and Elements ss 15 4 2 Adjustment of Volume and Monitor Parameters see 23 4 3 Selecting the Operation Mode TV Spectrum Analyser ssss 23 4 4 RF Band Selection 45 862 MHz 900 2150 MHz see 23 4 5 Channel Tuning Frequency Tuning esee 24 4 6 Automatic Transmission Search ssessseeeeeeenen 24 4 7 Selecting Analogue Digital Mode sseee 24 4 8 External Units Power Supply EXT SUPPLY 25 4 9 TV Operating Mode erii te ceci ntes tona eii tege 26 4
33. USER S MANUAL PROLINK 2 Premium A PROMAX Figure 25 DiSEqC commands screen DiSEqC screen is divided in 3 areas the field to edit the DiSEqC commands sequence only command Sat A B in previous figure Send Clear functions and Exit Fill in the LABEL field with the program name turn the selector to display the different characters in alphanumerical order and press to pick the character you need To define the DiSEqC commands sequence press key 5 31 repeatedly until cursor is positioned on one line of the commands sequence the line will blink If cursor has been placed on the first empty line Sat A B command will appear first DiSEqC command of table 5 To select a different command turn the rotary selector until the desired command appears and then press it Some DiSEqC commands need to define an associated parameter i e On Off a numerical value A B when any of these commands is selected first option for the associated parameter appears automatically at its right to change it turn the rotary selector and to validate it press the rotary selector see DiSEqC commands table Once the DiSEqC command is defined the cursor will pass to the following line if you want to define a new command proceed as for the first one if you do not want to add any command press key B 31 After the commands sequence is created it is possible to modify it To modify the sequence press key 31 repeatedly until you have positioned the cur
34. V mode and ntegration method in Spectrum mode The Automatic method measures digital channel power in the measurement filter bandwidth and estimates total channel power assuming that spectral density is uniform throughout channel bandwidth On the other hand the Integration method takes into account signal spectral distribution so measurement is more accurate but slightly slower see 4 10 2 Selecting the Measurements Mode The obtained measurements using these methods may differ some dBs specially when the digital signal is degraded Potencia de un canal digital Digital channel power Puissance d un canal num rique TV We pect Channel BW Channel BW Marker Marker AN Y M Measure BW aul Medida de la potencia por integraci n Power measurement by integration method Mesure de la puissance par integration Medida de la potencia m todo autom tico Power measurement by the automatic method Mesure de la puissance par le mode automatique Figure 9 Measuring digital power Page 34 06 2004 AX USER S MANUAL PROLINK 2 Premium A PROM On selecting the CHANNEL POWER measurement mode the screen displays the following information Figure 10 Digital channel power measurement In addition to the power of the digital channel 45 8 dBuV in previous figure this also shows the tuning frequency or channel depending on the tuning mode selected and the parameters regarding bandwidth Channel BW and measuring filter ban
35. able TV CATV Community Antenna Television satellite TV MMDS microwave links VSAT Very Small Aperture Terminal systems and digital TV Furthermore its high resolution frequency 50 kHz makes FM measurements much easier s Trade Mark of the DVB Digital Video Broadcasting Project 2301 06 2004 Page 1 USER S MANUAL PROLINK 2 Premium The PROLINK 2 Premium includes the main TV standards B G I D and K adopting apart from the characteristic parameters of the standard the correcting automatic system to obtain in all the cases an accurate measuring of the input signal level It admits any TV system PAL and SECAM and allows the user to work directly with digital TV signals and directly measuring the power carrier noise ratio C N the bit error rate BER and the modulation error ratio MER of the digital signals It is also capable of analysing the MPEG 2 DVB Transport Stream and identifying received Wrong Packets Being a multistandard instrument it can be efficiently used in any country of the world Its accuracy and reliability meet the needs of the most demanding users A powerful microprocessor automatically handles a large part of the operations necessary to optimise the process of measurement for example continuous frequency synthesis measurement correction the appropriate selection of the attenuators and the automatic cut off after the device has been inactive for a certain period of time The signal le
36. acing the Battery rr iin tede ice ripeto eee 73 6 3 Cleaning Recommendations ssesssseeeeeneneeeeee nenne 74 USER S MANUAL PROLINK 2 Premium ADVANCED TV amp SAT LEVEL METER PROLINK 2 Premium Digital Video Broadcasting 1 1 GENERAL 1 1 Description The result of uniting PROMAX ELECTRONICA s long experience in the design of TV signal analysers with the latest in technological progress the PROLINK 2 Premium brings together the functions installers seek most all in one small light weight portable instrument Special attention has been given to creating a level meter that has advanced features but which is also easy to use Three features in particular are a result of this a universal keyboard each function represented by a graphic icon so that after a brief period of introduction to the instrument access to any function becomes almost intuitive Secondly the meter has been entirely designed as an On Screen Display OSD instrument so that when a function is selected it appears on the monitor listing all the various parameters the user has chosen Finally there is a rotary selector button used for navigation across the different on screen menus to alter parameters and to validate them at the touch of a button The range of frequencies covered from 45 to 862 MHz and from 900 to 2150 MHz makes PROLINK 2 Premium an excellent instrument for FM radio terrestrial TV MATV Master Antenna Television c
37. alogue and digital channels When switching to a new modulation the PROLINK 2 Premium activates the last measurement configuration used for that modulation Page 24 06 2004 USER S MANUAL PROLINK 2 Premium Also it is possible to switch between analogue and digital modes by means of System amp Standard from function menu 4 8 External Units Power Supply EXT SUPPLY The PROLINK 2 Premium can supply the voltage needed to power the external units antenna preamplifiers in the case of terrestrial TV LNB in the case of satellite TV or IF simulators AN Maximum input levels DC to 100 Hz 50 V rms powered by the AL 103 power charger 30 V rms not powered by the AL 103 power charger 45 MHz to 2150 MHz 130 dBuV 7 To select the supply voltage of the external units press key 27 and the screen will display a functions menu labelled EXT SUPPLY listing the choice of voltages which will depend on the band being used Turn the rotary selector 4 to the desired voltage and press to activate it The following table shows the choice of supply voltages SATELLITE External 13 V 15V 18V 13 V 22 kHz 15 V 22 kHz 18 V 22 kHz TERRESTRIAL Table 1 External units powering voltages In the External power supply mode the unit powering the amplifiers before the antenna terrestrial television or the satellite TV receiver house hold or community also powers the external units The DRAIN 6 indicator lights when cu
38. als 4 9 2 10 LNB Local Oscillator Frequency Lnb local osc This option only affects reception of satellite band signals when using the channel tuning mode This function defines the LNB local oscillator frequency used in the installation where the PROLINK 2 Premium has been connected Given that the PROLINK 2 Premium satellite channel tables have been defined in the Ku band and the PROLINK 2 Premium tunes in IF like all satellite receivers the LNB local oscillator frequency has to be defined to correctly tune the channel mode To modify this parameter access the TV mode functions menu satellite band turn the rotary selector 4 to the Lnb local osc function and press to activate it The monitor will show a screen labelled LNB LOCAL OSCILLATOR displaying the current value of the LNB local oscillator frequency To alter this value press key 31 the current value will disappear and the new value can now be entered using the keyboard The frequency of the LNB local oscillator is expressed in MHz with 5 figures for the whole part a decimal point and a decimal figure which acts as confirmation For example to select 9 GHz the number 9000 0 has to be entered Values must be defined between 8000 0 and 12000 0 4 9 2 11 Video Polarity This option affects reception of SAT satellite band signals It allows selection of either negative and positive video polarity To modify the polarity access the TV mode functions menu satellite band
39. andwidth Channel BW sesee 48 4 9 2 10 LNB Local Oscillator Frequency Lnb local osc 48 4 9 2 11 Video Polatily anderen itia rates 48 4 9 2 12 Verification of distribution networks SAT IF Test 49 4 9 2 13 NICAM Channel esses enne 51 4 9 244 Search Eevel nine center ee feiss 51 49 2 15 Teletext osten e e ERR I IRE dri cea 51 4 9 2 16 DiSEqC Command Generator sss 52 4 92 17 BOOP E 55 4 9 2 18 Equipment Information sese 55 4 92 19 EXIE Sici rr meri e Er pede ne eee Sia 55 4 10 Spectrum Analyser Operating Mode sse 55 4 10 1 Spectrum Analyser Mode Functions Menu seeeeee 4 10 1 1 Band Switching LUAM a 4 10 1 3 Reference Level nennen 4 10 1 4 Dual Marker Single Marker 440 15 SWEEP ipiri soenoe aaa iae EESE 4 10 1 6 Reference Noise Carrier gt Ref Noise 59 4 10 1 7 Channel Bandwidth Marker gt Channel BW ss 59 4 10 1 8 Marker Channel BW 2 Marker 4 10 1 9 Carrier Ref Noise gt Carrier sssee 4 10 1 10 Bandwidth of the Spectrum Measuring Filter Measure bandwiath 60 4 10 1 11 Selecting the Channels Table CHANNEL SET 60 4 10 1 12 Batteries and External Units Power Supply BATTE
40. art DIN EN 50049 2018161412108 6 4 2 ft RED ai i d i P PETT l 2119171513119 7 5 3 1 Figure 38 Scart socket external view Also known as PERITEL connector in conformity with standard NF C92250 The signals in this connector are the following PIN number SIGNAL CHARACTERISTICS 1 Right channel audio output 2 Right channel audio input 3 Left channel audio output 4 Audio grounding 5 Blue grounding B 6 Left channel audio input 7 Blue output B 8 Switching voltage 9 Green grounding G 10 Digital bus interface not connected 11 Green output G 12 Digital bus interface not connected 13 Red grounding R 14 Digital bus reserved not connected 15 Red output R 16 Blanked signal not connected 17 Composite video grounding 18 Blanked return not connected 19 Composite video output 20 Video input 21 Connector shield grounding Table 8 Description of the Scart Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 Page 72 FAX 781 665 0780 TestEquipmentDepot com 06 2004 AX USER S MANUAL PROLINK 2 Premium 6 MAINTENANCE N 6 1 Internal fuses which user cannot replace The following fuses are found on the base board Their location identifier and characteristics are the following F001 and F002 7A S 125 V SMD 6 2 Replacing the Battery Battery must be replaced whenever the capacity of the ful
41. ate 2 to 45 Mbauds Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 Page 6 FAX 781 665 0780 TestEquipmentDepot com 06 2004 USER S MANUAL PROLINK 2 Premium Carrier frequency deviation Roll off o factor of Nyquist filter Code Rate Spectral Inversion TELETEXT RS 232C INTERFACE EXTERNAL UNITS POWER SUPPLY Terrestrial Satellite 22 kHz signal Voltage Frequency Maximum power DiSEqC GENERATOR POWER SUPPLY Internal Batteries Autonomy Recharging time External Voltage Consumption Auto power off 0 05 x Symbol rate 0 35 1 2 2 3 3 4 5 6 7 8 and AUTO Selectable ON OFF Decodes at 1 5 level Through the RF input connector External or 13 15 18 24 V External or 13 15 18 V Selectable 0 6V 0 2V 22 kHz 4 kHz 5W According to DiSEqC 1 2 standard 7 2 V 11 Ah Li lon battery 2 hours in continuous mode 4 hours starting of completely discharged instrument off 12V 30W After 15 minutes without operating on any control Deactivable OPERATING ENVIRONMENTAL CONDITIONS Altitude Temperature range Max relative humidity MECHANICAL FEATURES Dimensions Weight Up to 2000 m From 5 to 40 C automatic disconnection by excess of temperature 80 up to 31 C decreasing lineally up to 50 at 40 C 294 W x 100 H x 274 D mm without holster 5 kg 3 DiSEqCTM is a trademark of EUTELSAT 06 2004 Page 7 A PAROM USER S MANUAL PROLIN
42. battery voltage 7 3 V in previous figure both numerically and with a bar graph The arrow labelled Low below the horizontal bar signals the low battery level where the battery should be charged When batteries are fully charged battery voltage indication is 7 4 V or higher The bottom of the screen shows the voltage supplied to the external units V EXT 18 5 V in the figure above and the current supplied I EXT 200 0 mA in the example To leave this function press the rotary selector 4 4 9 2 4 Input Video The Input video function enables Scart connector signals to be controlled There are four possibilities Scart Auto Normal Scart operation Scart In Input video operation mode Scart Out Output video operation mode Scart Off Scart deactivated To select the Scart operation mode access the TV mode functions menu turn the rotary selector 4 to the Input video function and press to activate it The monitor will show a screen labelled INPUT VIDEO displaying the four available options as well as the Exit option Turn the rotary selector 4 to the mode you require then press to activate it Page 46 06 2004 USER S MANUAL PROLINK 2 Premium 4 9 2 5 Selecting the Channels Table Channel set The PROLINK 2 Premium comes with eighteen stored channel tables as standard four for terrestrial television and fourteen for satellite for greater adaptability to the selection requirements of different countries or zones See the chan
43. be possible to measure the BER When the BER measuring mode is selected the monitor will show a picture like the following Figure 15 BER measuring screen for QPSK modulated signals Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 06 2004 FAX 781 665 0780 TestEquipmentDepot com Page 41 USER S MANUAL PROLINK 2 Premium Two BER measurements are shown 1 BER before FEC Forward Error Corrections or MER Modulation error ratio 2 BER after Viterbi In a digital reception system for satellite signals after the QPSK decoder two different correction methods are applied see figure 18 Obviously each time we apply an error corrector to a digital signal the error rate changes therefore if we measure in a digital satellite television system for example the error rate at the output of the QPSK demodulator at the output of the Viterbi decoder and at the output of the Reed Solomon decoder we obtain nothing more than different error rates This is the reason because the BER measurement is provided before FEC after Viterbi BER before FEC BER after Viterbi Wrong packets Figure 16 Digital reception system via satellite The BER measurement is provided in scientific notation i e 2 0 E 3 means 2 0x10 that is to say two incorrect bits of every 1 000 and through an analogue bar as its length is smaller the signal quality will be better The analogue representation is done on a logarithmic sca
44. ccur besides other effects such as tuner saturation and generation of intermodulation products that may mask the spectrum visualization 4 9 1 1 1 Changing the measurement information format In TV operation mode the measurement information format to be displayed on screen is selected by pressing key 2 Three possibilities are offered selected cyclically TV image with a window in the lower part of the screen displaying the signal level and frequency channel TV image with a window displaying information on the name assigned to memory power supply to external units sound colour system TV standard level and frequency channel TV image only 4 9 1 1 2 Selecting TV Mode TV LV SY TV MODE In addition to operating as a television set the monitor of the PROLINK 2 Premium can act as an analogue level indicator and can display the line synchronising pulse just as it would appear on a screen of an oscilloscope 3 To change the TV mode press key 23 and the following screen will appear Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 06 2004 FAX 781 665 0780 TestEquipmentDepot com Page 29 A PROM USER S MANUAL PROLINK 2 Premium Figure 5 TV mode selection Turn the rotary selector 4 to choose the information you want to be displayed 3 on screen Press the rotary selector 4 or key 23 to activate the selected display mode The operation modes available are TV Monito
45. dwidth Measure BW For the power measurement of a digital channel to be correct it is essential to have previously defined the channel bandwidth using the Channel BW function in the TV mode functions menu see section 4 9 2 11 Channel Bandwidth 4 9 1 5 BER measurement mode selection The PROLINK 2 Premium offers three ways to measure the error rate BER of digital signals depending on the type of used modulation To select the BER measurement mode 1 Select the TV operating mode If present operating mode is the spectrum analyser mode press key 21 2 Select the terrestrial band for the measurement of COFDM modulated signals or the satellite band for the measurement of QPSK modulated signals Available frequency ranges are COFDM signals 40 MHz to 862 MHz QPSK signals 950 MHz to 2150 MHz 0 3 Select the DIGITAL operating mode by means of the key 20 Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 06 2000 FAX 781 665 0780 TestEquipmentDepot com Page 35 USER S MANUAL PROLINK 2 Premium 2 4 Select the BER measurement mode to do this press ey 2 22 and turn the rotary selector 4 to select the BER measuring mode next to activate it 2 press the rotary selector 4 or key 22 Before measuring the BER or analysing the Wrong Packets in the Transport Stream MPEG 2 DVB is necessary to define some parameters concerning the digital signal which are described in the following sect
46. e 40 06 2004 USER S MANUAL PROLINK 2 Premium A PROMAX When selecting the Other option a screen titled QPSK SYMBOL RATE will appear This screen shows present value to modify it press key and enter the new value through the keyboard The unit accepts any number with 5 figures between 2000 and 35000 kbauds fifth figure acts as validation For example to select a symbol rate of 8200 kbauds it must be entered 08200 2 Code Rate Also known as Viterbi ratio It defines the ratio between the number of data bits and actual transmission bits the difference corresponds to the control bits for error detection and correction It permits to choose between 1 2 2 3 3 4 5 6 7 8 and Auto If Code Rate parameter is not known it is possible to assign the Auto option 3 Spectral Inv If necessary activate the Spectral inversion Reception will be bad if spectral inversion has been incorrectly selected 4 Attenuator It permits to select attenuation between 0 and 30 dB It is advisable to activate the 30 dB attenuator under that measurement conditions where the signal level is near to the maximum input level approximately starting from 20 dB under the maximum level and it is possible that the tuner becomes saturated Under no saturation conditions when increasing the attenuation value the BER measure must to maintain or to increase insufficient signal level but never to decrease Once you have defined the QPSK signal parameters it will
47. e desired option and finally press it to confirm Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 06 2004 FAX 781 665 0780 TestEquipmentDepot com Page 39 A PROM USER S MANUAL PROLINK 2 Premium Figure 14 MER measuring screen for COFDM modulated signals IMPORTANT REMARK DVB T channels tuning may require an adjusting process It is recommended to follow next procedure 1 From the spectrum analyser mode tune the channel at its central frequency 2 Switch to TV mode BER measuring mode 3 If in the lower line of the screen does not appear MPEG 2 message and consequently BER is unacceptable by turning the rotary selector deviate the tuning frequency until MPEG 2 message appears Finally tune channel again to minimize the frequency deviation which optimizes the BER and therefore minimize the BER If it is not possible to detect any MPEG 2 channel make sure that digital signal parameters are correctly defined and if signal level is too low check that the 30 dB attenuator is not activated Attenuator 0 dB 4 9 1 5 2 Measuring BER of QPSK Digital Channels QPSK Press the rotary selector to access the QPSK signals parameters that must be defined by user and that are described below 1 Symbol Rate It is possible to choose between the following values 30000 27500 22000 20000 19995 6110 6000 5998 5632 5062 4340 4000 kbauds or well to define any other value Other Pag
48. e rotary selector 4 Turning the rotary selector 4 selects the desired frequency tuning is continuous from 45 to 862 MHz and from 900 to 2150 MHz When turning it clockwise frequency increases while turning it anticlockwise frequency decreases 2 Using the keyboard Press key 31 B the frequency listing will disappear next enter the frequency value in MHz using the numeric keyboard the fifth digit to press the rotary selector 4 or the second decimal act as confirmation The PROLINK 2 Premium will calculate the tuneable frequency closest to the entered value and then display it on screen 4 6 Automatic Transmission Search In the TV mode by pressing the e 24 key search starts at the present frequency or channel until it finds a transmission with a level higher than the search level The threshold level is defined by means of the Search level function of the TV mode functions menu see paragraph 4 9 2 16 Search Level The Search function halts the search process when the end of the present band is reached if it is in frequency mode or when a key is pressed In channel mode the search process is halted when the last channel of the group selected is reached see Appendix A The sound is deactivated during the search process 4 7 Selecting Analogue Digital Mode Measuring the characteristics of a channel depends in the first place on the type of modulation analogue or digital 0 Use key 20 to switch between an
49. earch will continue indefinitely In such a situation the user can halt the search process either by entering a new page number or by exiting the Teletext function pushing any control relative to another function The Teletext function is especially valuable for the final optimization process in TV installations Any interference or reception through indirect beams generates digital in the digital information of the Teletext which are highly visible as erroneous characters on the screen 4 9 2 16 DiSEqC Command Generator DiSEqC Digital Satellite Equipment Control is a communication protocol between the satellite receiver and the accessories of the installation switches LNBs etc proposed by Eutelsat with the aim to standardize the diversity of switching protocols 13 15 18 V 22 kHz 60 400 Hz and to satisfy the demands of the digital TV installations To define and or to send a DiSEqC commands sequence from the TV operation mode press the rotary selector 4 select the DiSEqC function and press it again A screen like next one will appear Figure 24 DiSEqC programs screen This screen shows a list containing up to 10 DiSEqC programs appearing as UNTITLED by default which may be edited for execution To edit a program turn the rotary selector placing the pointer over the program editing position and press to access the DiSEqC commands editing screen 4 DISEqCTM is a trademark of EUTELSAT Page 52 06 2004
50. earches until finds a station with an adequate level The threshold level search level can be defined by means of the TV mode functions menu between 30 and 99 dBuV Key number 4 to enter numeric data STORE RECALL This key enables the measurement configuration to be stored recalled Each configuration has the following information name assigned to memory memory number Channel or frequency Freq TV system TV Sys measurement mode Meas external units power supply V Lnb measurement units Units and Sound The memory can store up to 99 measurement configurations numbered from 1 to 99 Key number 5 to enter numeric data 06 2004 AX USER S MANUAL PROLINK 2 Premium 26 27 28 29 30 31 Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 06 2004 CA ouo This selects the type of sound The options available in each case depend on the band and the standard selected see section 4 11 Selecting the Sound Mode Key number 6 to enter numeric data 7 EXTERNAL UNITS POWER SUPPLY Enables selecting the power supply to the external units Available voltages are External 13 V 15 V 18 V and 24 V for the terrestrial band and External 13 V 15 V 18 V 13 V 22 kHz 15 V 22 kHz and 18 V 22 kHz for the satellite band Key number 7 to enter numeric data i DIRECT ACCESS KEY Direct access key which can be assigned to any function on any menu Key number 8 to en
51. elect the active marker Marker B gt A or Marker A gt B or return to using only one marker Single marker Figure 28 Spectrum Analyser mode with two tuning markers When you select the Dual marker function the bottom of the screen displays the frequency of each of the two markers the signal level for each frequency and on the far right the frequency difference and the level between them 4 10 1 5 Sweep It offers the possibility of selecting the Spectrum mode sweep rate High Resolution slow sweep high precision Fast fast sweep low precision and Antenna Alignment for faster sweep antenna alignment without numeric representation Page 58 06 2004 USER S MANUAL PROLINK 2 Premium To modify the sweep speed select the Spectrum Analyser mode functions menu then turn the rotary selector 4 to the Sweep function and press The screen will show a window containing all the values which may be chosen Turn the rotary selector 4 to the desired speed and activate it by pressing the selector again 4 10 1 6 Reference Noise Carrier gt Ref Noise Only in C N measurements Permits to define the frequency where noise level will be measured To modify the frequency where you want to measure noise level accede to the menu functions and select the Carrier gt Ref noise function then again in the Spectrum mode turn the rotary selector to place the marker on the frequency where you want to measure the noise level or w
52. ell press key B 31 current reference noise frequency will be erased and using the keyboard introduce the new value Finally accede to the functions menu again and execute the Ref Noise gt Carrier function so that you can tune new carrier frequencies by turning the rotary selector 4 10 1 7 Channel Bandwidth Marker gt Channel BW Only in Channel Power measurements Permits to define channel bandwidth To modify the channel bandwidth that is to say the power integration limits accede to the menu functions and select the Marker gt Channel BW function then again in the Spectrum mode turn the rotary selector to modify it or well press key 31 current channel bandwidth will be erased and using the keyboard introduce the new value Finally accede to the functions menu again and execute the Channel BW gt Marker function so that you can tune new carrier frequencies by turning the rotary selector 4 10 1 8 Marker Channel BW Marker Only when measuring Channel power and after defining the Channel bandwidth Permits to change the tuning frequency by means of the rotary selector 4 10 1 9 Carrier Ref Noise gt Carrier Only when measuring C N Referenced and after defining the Reference noise Permits to change the tuning frequency by means of the rotary selector Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 06 2004 FAX 781 665 0780 TestEquipmentDepot com Page 59 USER S MANUAL PROLINK 2 Premiu
53. eo carrier audio carrier level ratio 15 0 dB in previous figure this also shows the frequency or channel depending on the tuning mode selected and the level of the video carrier and audio carrier Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 06 2004 FAX 781 665 0780 TestEquipmentDepot com Page 31 USER S MANUAL PROLINK 2 Premium 4 9 1 3 Measuring the Carrier Noise Ratio C N The PROLINK 2 Premium offers two ways to make this measurement Auto The PROLINK 2 Premium defines the frequency where noise level is measured automatically Reference noise The user defines the frequency where noise level is measured by means of the Reference noise function This frequency will be used to measure noise level for all channels To select the measuring method activate the TV mode functions menu by pressing the rotary selector 4 then turn it to select C N setup function and finally press it again The monitor will show a screen displaying two possibilities C N Auto and C N Reference noise then turn the rotary selector to select the desired option and finally press it to confirm When selecting the C N Reference noise mode it is necessary to define the noise frequency access the functions menu and now turn the rotary selector to select Reference noise function and finally press it again A screen titled REFERENCE NOISE will be displayed showing the noise frequency in use To change it press key E
54. esentation vertically With this aim a new function has been introduced that allows to set a variable Dynamic Range from 10 5 2 dB div The PROLINK 2 Premium incorporates a specific function to test satellite signals distribution networks The use in combination with a IF generator allows to carry out an easy verification of the installations before the operation beginning Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 Page 2 FAX 781 665 0780 TestEquipmentDepot com 06 2004 USER S MANUAL PROLINK 2 Premium The selection of sound subcarrier is automatic depending on the standard or tunable between 4 and 9 MHz When decoding TV sound it is possible to choose between the NARROW and WIDE filter to obtain the best carrier discrimination It includes a NICAM decoder with BER measurement the possibility to commute the channel that is delivered to the loudspeaker enables the user to check the sound stereo and dual Also it allows to access to the associated information to the FM transmissions that incorporate by the radio data system RDS To enhance its convenience of use it has 99 memories to store the different measuring configurations name of the configuration frequency TV system type of measurement external units powering units of measurement and sound Also the level meter incorporates the teletext function a DiSEqC command generator and permits to supply different voltages to the external unit 13
55. evel Dynamic range Dual marker Marker B gt A Marker ASB Single marker Carrier Ref Noise USER S MANUAL PROLINK 2 Premium Defines the reference level between 10 and 130 dByV in 10 dB steps Defines a selectable dynamic range between 2 5 and 10 dB div Only analogue channels level measurement mode and single marker mode Enables dual markers to be shown on the displayed spectrum Only in dual marker mode Selects marker A as the active marker tuneable Only in dual marker mode Selects marker B as the active marker tuneable Only in dual marker mode Activates the single marker on the displayed spectrum Only in C N measurements Permits to define the frequency where noise level will be measured see Hef Noise 2 Carrier function Ref Noise Carrier Only when measuring C N Referenced and after defining the Carrier gt Ref Noise Permits to change the tuning frequency by means of the rotary selector Marker Channel BW Only in Channel Power measurements Permits to define channel bandwidth see Channel BW Marker function Channel BW Marker Only when measuring Channel power and after defining Sweep the Marker Channel BW Permits to change the tuning frequency by means of the rotary selector Offers a choice of spectrum mode sweep rates Fast fast sweep low accuracy High Resolution slow sweep high accuracy and Antenna Alignment tool for faster sweep antenna alignment w
56. g on the tuned frequency measurement filter bandwidth is 230 kHz if tuning is shifted from 759 MHz to 762 MHz reading will increase in several dB Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 Page 62 FAX 781 665 0780 TestEquipmentDepot com 06 2004 USER S MANUAL PROLINK 2 Premium A PROMAX Channel Bandwidth Marker 760 00 MHz Channel BW 8 00 MHz Channel Power 55 0 dBuV Figure 30 Channel power measurement in Spectrum Mode When measuring Channel power on the lower part of the image appears the tuned frequency or channel the channel bandwidth Channel BW and the Channel Power To measure the channel power first of all it is necessary to define channel bandwidth that is to say to set the limits of the integration select the Channel bandwidth function in the functions menu and then again in the Spectrum mode turn the rotary selector to modify it or well press key 81 current channel bandwidth will be erased and using the keyboard introduce the new value Finally accede to the functions menu again and execute the Marker function in order you can tune new carrier frequencies then when turning the rotary selector the tuning marker and the channel bandwidth limits will shift together IMPORTANT REMARK To measure digital channels power correctly it is indispensable to tune channel at its central frequency and to define channel bandwidth 4 11 Selecting the Sound Mode SOUND 6
57. hen turn the rotary selector 4 until desired mode is marked and finally press the rotary 2 selector 4 or key 22 to activate the new measurement mode 4 10 2 1 Measuring Carrier Levels Level Only for analogue channels When selecting this mode on the lower part of the image appears the tuned frequency or channel and the signal level at this frequency If dual marker function is selected tuned frequency and signal level are showed for each one of the markers and on the far right the frequency difference and the level between them 4 10 2 2 Measuring the Carrier Noise ratio C N Referenced The Carrier Noise ratio in Spectrum mode is always referenced to a noise frequency defined by the user Imagine a situation like the one shown in the next figure a digital channel 8 MHz BW adjacent to an analogue channel When measuring C N for the digital channel in TV mode using the Auto setup the analogue channel may interfere in the noise measurement given that the noise level is measured at fhoise tuning V amp Channel BW 650 MHz 4MHz 646 MHz so under this situation it is recommended to make the measurement in Spectrum Analyser mode and to define manually the frequency where we want to measure noise obviously a frequency where no signal is present i e in the next figure noise is defined to be measured at 655 MHz 06 2004 Page 61 A PROM USER S MANUAL PROLINK 2 Premium Channel BW Reference noise Ceper
58. ion see section 4 9 1 5 1 Measuring BER of QAM Digital Channels QAM To see its present value or to modify it being in the BER measuring screen press the rotary selector it will appear a multiple choice menu showing the functions relative to the BER measurement on the screen 4 9 1 5 1 Measuring BER of COFDM Digital Channels COFDM Press the rotary selector to access the COFDM signals parameters that must be defined by user and that are described below 1 Carriers It defines the number of modulation carriers between 2k and 8k To modify its value place the marker over the Carriers field by turning the rotary selector and then press it a menu will appear on the screen Turning the rotary selector select the desired value for the Carriers parameter and finally press it again to validate 2 Guard interval The Guard Interval parameter corresponds to the time dead between symbols its purpose is to permit a correct detection in multi path situations This parameter is defined according to the symbol length 1 4 1 8 1 16 1 32 To modify its value by turning the rotary selector place the marker over the Guard Interval field and then press it a menu with the available values will appear Turning the rotary selector select the desired value and finally press it to validate If Guard Interval parameter is not known it is possible to assign the Auto option for its automatic detection 3 Channel BW channel bandwidth Enables the cha
59. ions menu then turn the rotary selector 4 to the Span function and press it The screen will show a window with the spans which can be selected Turn the rotary selector 4 to the required span and activate it by pressing the selector again 06 2004 Page 57 AX PROM USER S MANUAL PROLINK 2 Premium In Full mode the measuring filter bandwidth used to display the spectrum is always 1 MHz for terrestrial bands and 4 MHz for satellite band For the other spans you can select the bandwidth using the Measure Bandwidth function on the same functions menu See section 4 10 1 10 Bandwidth of the Spectrum Measuring Filter 4 10 1 3 Reference Level The reference level corresponds to the level marked by the top horizontal line appearing on the Spectrum Analyser mode screen This function enables the reference level to be defined between 10 and 130 dByV in 10 dB steps The default reference level is 70 dByuV To alter the value of the reference level select the Spectrum Analyser mode functions menu turn the rotary selector 4 to select the Heference level function and press it The screen will show a window with the values which can be selected Turn the rotary selector 4 to the desired reference level and activate it by pressing the selector again 4 10 1 4 Dual Marker Single Marker Only for level measurements This function enables two tuning markers Dual marker to be seen on the spectrum display When you choose this option you can s
60. ithout numeric data representation Measure bandwidth Selects the bandwidth of the spectrum measuring filter Acquisition mode Detection mode DiSEqC System amp Standard from among Terrestrial channels 50 kHz 230 kHz or 1 MHz Satellite channels 50 kHz 230 kHz or 4 MHz Offers three acquisition modes Maximum Hold Minimum Hold and Continuous default Offers two detection modes Average and Peak default Only satellite channels Defines a sequence of DiSEqC commands and permits to send them Selects the colour system PAL or SECAM and the TV standard B G D K I L or Digital 06 2004 USER S MANUAL PROLINK 2 Premium Battery amp Lnb Displays battery voltage and external units power supply voltage and current V Ext and I Ext Channel set Selects active channels table Print Prints the spectrum shown on the screen See 4 14 Printing the Spectrum the Measurement and Memories Press Next for the second sub menu and from there to the third you will see the same functions as those appearing in the second and third sub menus in TV mode 5 6 7 8 9 10 Test Equipment Depot 800 Figu 06 2004 EXT VIDEO Video signal presence light indicator It lights up when video on screen is coming through the SCART connector 39 DRAIN External units power supply indicator Lights up when the PROLINK 2 Premium supplies a current to the external unit CHARGER External
61. lates the possibility to make a TDT transmission with hierarchical levels it is to say a simultaneous transmission of the same program with different image qualities and noise protection levels in order the receiver can exchange to a signal of smaller quality when the reception conditions are not optimal Once you have defined the COFDM signal parameters it will be possible to measure the BER When the BER measuring mode is selected the monitor will show a picture like the following Figure 11 BER measuring screen for COFDM modulated signals Two measures are shown 1 CSI Channel status information or MER Modulation error ratio 2 BER after Viterbi The CSI measure Channel Status Information is a qualitative measure about channel state between 0 and 100 The optimum value corresponds to 0 This measure permits to look for the best situation even in those measuring conditions where the measured BER is best than the minimum readout in this way in the example of the previous figure the measured BER is lower that the minimum readout 1 0x10 but the CSI measurement 27 still can be improved Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 06 2004 FAX 781 665 0780 TestEquipmentDepot com Page 37 USER S MANUAL PROLINK 2 Premium Next it is shown the BER after Viterbi measurement both in numeric and graphic bar format In a reception system of terrestrial digital signal after the COFDM
62. le not linear With the aim to have a reference about the signal quality it is considered that a system has a good quality when it decodes less than one non correctable error for every transmission hour This border is known as QEF Quasi Error Free and it corresponds approximately to a BER after Viterbi of 2 0E 4 BER 2 0x10 This value is marked on the measurement bar of the BER after Viterbi and therefore BER for acceptable signals must be at the left side of this mark Next it is shown the tuning frequency and the frequency deviation in MHz between the tuned frequency and the one which optimizes the BER i e Freq 1777 0 1 2 MHz Finally it is shown a status line with information about the detected signal The possible messages that can appear and its meaning are shown in the following list The messages are exposed from less to more fulfilment of the MPEG 2 standard No signal received Any signal has been detected Signal received A signal is detected but it can not be decoded Carrier recovered A digital carrier has been detected but it can not be decoded Page 42 06 2004 AX USER S MANUAL PROLINK 2 Premium Viterbi synchronized A digital carrier has been detected and the Viterbi algorithm is synchronized but too many frames arrive with non correctable errors It is not possible to quantify the BER MPEG 2 Correct detection of a MPEG 2 signal In case of detecting a DVB signal message MPEG 2 DVB S The
63. lour for charge level higher to 5096 it remains amber and it appears in red to indicate the empty battery condition When the instrument indicates a Low Battery led lit in red colour the battery must be charged immediately When the low battery level is reached the monitor momentarily displays the message VERY LOW BATTERY and the beeper sounds Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 06 200 FAX 781 665 0780 TestEquipmentDepot com Page 13 USER S MANUAL PROLINK 2 Premium 3 1 2 1 Battery Charging To fully charge the battery connect the instrument to the external DC charger I without pressing the on off key 1 The length of time it takes to recharge it depends on the condition of the battery If they are very low the recharging period is about 4 hours The CHARGER 7 indicator should remain lit in amber colour When the battery charging process is completed with the instrument off the fan stops IMPORTANT The instrument battery needs to be kept charged between 30 and 50 of its capacity when not in use The battery needs to be fully charged for best results A fully charged battery suffers temperature related discharge For example at a room temperature of 20 C it can lose up to 10 of its charge over 12 months 3 2 Installation and Start up The PROLINK 2 Premium level meter is designed for use as a portable device When the 1 key is pressed the instrument is in the automatic
64. lower line of the screen it appears the W P counter Wrong Packets counter This counter shows the number of non correctable packets received after Reed Solomon during the measuring time This counter is automatically activated when the unit detects an MPEG 2 signal If at any time the received signal stops to satisfy the requirements of the MPEG 2 standard this counter will deactivate that is to say it will keep the number of non correctable packets received and the measuring time later if an MPEG 2 signal is received again it will activate with no reset When during any measuring time interval the counter has been deactivated in other words the signal has not satisfied the MPEG 2 synchronism the presentation of this counter will alternate with another counter titled FAIL This second counter shows the time that the detected signal has not fulfilled the MPEG 2 standard requirements 12 seconds in the example of the following figure and the number of signal cuts 2 in the example of the following figure To reset the counter it is necessary to change any of the detection 2 parameters for example tune again the signal or push twice the 22 key Page 38 06 2004 USER S MANUAL PROLINK 2 Premium A PROMAX Figure 13 Signalling two MPEG 2 signal cuts with a total length of 12 seconds Finally it is shown a status line with information about the detected signal The possible messages that can appear and its meaning are showing the
65. ly charged battery is noticeably diminished To change the battery follow next procedure IMPORTANT REMARK In case of the battery appears to be damaged you must send the equipment to an authorised Technical Service without trying to replace it Replace the old battery by another CB 047 battery The battery can be bought in your habitual PROMAX supplier Explosion or fire hazard can occur if other battery type is used AZ Ex Figure 68 Battery compartment CAUTION The battery used can present fire or chemical burn hazard if it is severely mistreat Do not disassembly or cremate or heat the battery above 100 C under no circumstances Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 06 2004 FAX 781 665 0780 TestEquipmentDepot com Page 73 A PAROM USER S MANUAL PROLINK 2 Premium Switch off the instrument Remove the rear holster if in place The battery compartment is located in the rear panel of the instrument Remove the securing screw A and washer from the compartment cover as shown in the previous figure it shows the battery compartment once the cover and connector linking the battery to the board have been removed Disconnect the battery connector strip from the board and replace the battery with a new IMPORTANT NOTICE The configuration data and all data stored in the memories will be lost when the battery is discon
66. m 4 10 1 10 Bandwidth of the Spectrum Measuring Filter Measure bandwidth The frequency resolution of the Spectrum Analyser mode is determined by the bandwidth of the measuring filter when displaying the spectrum This parameter is fundamental given the increasing density of channels present in all TV transmission systems To alter the bandwidth of measurement select the Spectrum Analyser functions menu then turn the rotary selector 4 to the Measure bandwidth function and press The screen will show a window displaying the values which can be selected Turn the rotary selector 4 to the chosen bandwidth and activate it by pressing the selector again The choice of bandwidth is Terrestrial channels 50 kHz 230 kHz 1 MHz Satellite channels 50 kHz 230 kHz 4 MHz Filters with the greatest bandwidth 4 MHz y 1 MHz allow you to take more stable measurements as well as being able to distinguish between analogue and digital carriers The 4 MHz filter is ideal for level measurements on the satellite band The 230 kHz filter is recommended for measuring terrestrial television cable television and MMDS signals It also allows you to identify smaller bandwidth signals such as NICAM sound carriers terrestrial analogue channels to detect the beacon signal on VSAT the separation between the audio FM carrier and between the stereo sub carriers in television 4 10 1 11 Selecting the Channels Table CHANNEL SET See 4 9 2 7 section
67. n Terrestrial Satellite Markers Detection Measurements Terrestrial bands Analogue channels Digital channels Satellite band Analogue channels Digital channels MONITOR DISPLAY Monitor Colour system TV standard Synchronism and Burst Spectrum mode Sensibility Synchronism 50 60 Hz VIDEO SIGNAL External video input Sensibility Video output SOUND Input Outputs Demodulation De emphasis Subcarrier Variable Fixed Terrestrial Satellite 06 2004 Full span full band 500 200 100 50 32 16 8 MHz selectable Full span full band 500 200 100 50 32 16 8 4 MHz selectable 2 with level frequency level difference and frequency difference indications By peak or average Level and Carrier Noise ratio Referenced Channel power Integration method and Carrier Noise ratio Referenced Level and Carrier Noise rate Referenced Channel power Integration method and Carrier Noise ratio Referenced B amp W 4 Winches PAL SECAM and NTSC B G I D K and L Graphic representation over the picture Variable span dynamic range and reference level 40 dBpV for correct synchronism Automatic selection according to the system Scart automatic or selectable 1 Vpp 752 positive video Scart 750 Scart Built in speaker Scart AM FM TV and NICAM for PAL B G PAL and SECAM L standards selectable 50 us Digital frequency synthesis From 4 to 9 MHz 10 kHz resolution Acco
68. ncies appearing at the left of the screen and the higher ones at the right The amplitude of the lobes is calibrated In the example in previous figure the noise level is at around 20 dBuV and the lobe with the highest signal level second from the right is at 69 dBuV The frequency range displayed called span from hereon can also be altered using the Spectrum Analyser mode functions menu Also it is possible to define the detection mode peak or average by means of the Detection Mode function it affects the form in which the spectrum appears in screen The Peak mode is used for the detection of analogue modulations whereas the average mode is more suitable to detect the digital modulations A vertical broken line called marker appears on the spectrum display to identify the tuned frequency One of the applications of the PROLINK 2 Premium operating as Spectrum Analyser is in the search for the best orientation and position of the receiving antenna This is particularly important in UHF Because such frequencies are involved with wavelengths ranging from 35 cm to 65 cm if the antenna is shifted only a few centimetres the relationship between the picture chrominance and sound carrier frequencies change affecting the quality of the picture in the receiver If there is an excess of sound carrier tearing or moir may appear on the screen due to the frequency beats between the sound chrominance and the picture frequencies Test
69. nected Place and connect the battery to the board using the connector WARNING A Avoid any type of short circuit among the cables connected to the battery since the resulting high current may cause serious damage to the instrument Insert the battery compartment cover in the rear panel of the PROLINK 2 Premium and lock in place with the securing washer and screw A If you wish replace the holster CAUTION All the components of the Lithium ion battery included in the CB 047 ensemble are recyclable Return as soon as possible the used battery to PROMAX ELECTRONICA S A or to an authorised recycling centre of this type of batteries If any doubt consult directly PROMAX ELECTRONICA S A Keep them out of the reach of the child If in any doubt please contact our Customer Service Centre before undertaking any operation Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 Page 74 FAX 781 665 0780 TestEquipmentDepot com 06 2004 USER S MANUAL PROLINK 2 Premium 6 3 Cleaning Recommendations CAUTION To clean the cover take care the instrument is disconnected CAUTION Do not use scented hydrocarbons or chlorized solvents Such products may attack the plastics used in the construction of the cover The cover should be cleaned by means of a light solution of detergent and water applied with a soft cloth Dry thoroughly before using the system again CAUTION Do not use for the cleaning
70. nel frequency table in appendix A of the manual To modify one channel table access the TV mode functions menu turn the rotary selector 4 to the Channel set function and press to activate it The monitor will then show the CHANNEL SET screen Turn the rotary selector 4 to the desired table and then press the rotary selector 4 again to activate 4 9 2 6 Measurement Units The PROLINK 2 Premium offers three measurement units to measure level and channel power dBuV dBmV and dBm To select the units of measurement access the TV mode functions menu turn the rotary selector 4 to select the Units function and press to activate it The monitor will show a screen labelled UNITS displaying the three available options as well as the Exit option Turn the rotary selector 4 to the units you require then press to activate it 4 9 2 7 Power Off Mode Manual power The PROLINK 2 Premium offers two power off modes Manual and Automatic unit disconnects automatically after 15 minutes without operating on any control To select the power off mode access the TV mode functions menu turn the rotary selector 4 to select the Manual power function and press to activate it The monitor will show a screen labelled POWER OFF displaying the two available options as well as the Exit option Turn the rotary selector 4 to select the power off mode you require then press to activate it 4 9 2 8 C N setup To measure C N the PROLINK 2 Premium
71. ng the unit the commands sequence will NOT be lost It is possible to execute a specific DiSEqC program using a direct access key see 4 13 Direct Access to Functions This enables you to change specific configurations from the Spectrum Analyser Mode useful during the parameter adjustment process in an installation It is also possible to execute DiSEqC programs using the Datalogger function if their names are included in the automatic reading acquisition sequence see 4 12 1 Storing a Measurement Configuration STORE Next table shows the DiSEqC commands available Character Associated parameter General Sat A B Power on Standby Assigned Switch L O frequency High Low H V polarisation H V Position A B A B Sw option A B A B Assigned Switch me A B A B A B Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 Page54 FAX 781 665 0780 TestEquipmentDepot com 06 2004 USER S MANUAL PROLINK 2 Premium Positioner Disable limits Lo T I Q Enable limits y Limit East Limit West SERIEN Table 5 DiSEqC commands 4 9 2 17 Beep This function allows the user to switch the audible indicator ON and OFF To do this first select the TV mode functions menu then choose the Beep function using the rotary selector 4 and press The monitor will show the BEEP screen and by turning the rotary selector it will be possible to select between Beep ON or Beep OFF To validate
72. nnel bandwidth to be selected between 8 MHz 7 MHz and 6 MHz The selection of this parameter is essential for the correct operation of the tuner as it affects the frequency separation of the carriers 4 Spectral Inv spectral inversion This option enables spectral inversion to be applied to the input signal though in the majority of cases it should be in the OFF position not inversion 5 Attenuator It permits to select attenuation between 0 and 30 GB It is advisable to activate the 30 dB attenuator under that measurement conditions where the signal level is near to the maximum input level approximately starting from 20 dB under the maximum level and it is possible that the tuner becomes saturated Under no saturation conditions when increasing the attenuation value the BER measure must to maintain or to increase insufficient signal level but never to decrease Page 36 06 2004 USER S MANUAL PROLINK 2 Premium AX PROM This configuration menu shows besides the user definable COFDM signal parameters the value of the rest of COFDM signal parameters detected automatically Code Rate Also known as Viterbi ratio defines the ratio between the data bits number and the total number of bits transmitted the difference corresponds to the number of control bits for the error detection and recovery Modulations Carriers modulation It also defines the system noise immunity QPSK 16 QAM and 64 QAM Hierarchy The DVB T norm contemp
73. o polarity Sat IF Test Page 16 Enables Scart commutation signals to be activated deactivated or set to automatic subordinate mode Defines the C N measuring method between Auto or Referenced Only analogue channels This selects the NICAM sound channel that is sent to the loudspeaker Selects the threshold level of the automatic station search function Only satellite band It defines the frequency of the local oscillator L O of the LNB Only satellite band analogue channels This selects the polarisation of the video carrier Only satellite band analogue channels This selects the function for testing satellite distribution networks 06 2004 USER S MANUAL PROLINK 2 Premium Press Previous for the first sub menu or Next to access the third one Units Selects the measuring units dBuV dBmV or dBm Manual power Sets power off as Manual or Automatic Language Selects the language between DEUTSCH ENGLISH ESPANOL FRAN AIS and ITALIANO Should you have accidentally chosen the wrong language you can return automatically to the language menu by means the reset process Beep Activates ON deactivates OFF the beeper Initial screen It shows a logo of the manufacturer as well as basic information about the instrument description version manufacturer and model Equipment info Displays information on the instrument serial number version of control software included set up etc Exit Exits
74. om Page 43 A PROM USER S MANUAL PROLINK 2 Premium 4 9 2 TV Mode Functions Menu In TV operation mode press the rotary selector 4 to access the functions menu of the TV mode Li Figure 18 TV mode functions menu Turn the rotary selector 4 to choose the different functions turning it clockwise active option moves downwards while turning it anticlockwise active option moves upwards The downwards or upwards facing arrow at the bottom or top left hand side of the functions menu indicates there are more menus which can be accessed by turning the rotary selector clockwise or anticlockwise respectively Below we describe the use of each function and its range of values Page 44 06 2004 USER S MANUAL PROLINK 2 Premium 4 9 2 1 Selection of the RF Band Band switching Permits to switch from terrestrial 45 862 MHz to satellite band 900 2150 MHz and viceversa 4 9 2 2 Selection of the TV System and Standard System amp Standard This function enables the television system and standard to be changed The standards which can be selected depend on the band in use terrestrial or satellite channels To change the standard access the TV mode functions menu then turn the rotary selector 4 to the System amp Standard function and press the rotary selector again 4 A fold down menu will appear listing the following options Terrestrial bands Satellite band PAL B G PAL PAL D K SECAM PAL I Digital PAL SECA
75. or channel depending on the tuning mode selected and the evel of the video carrier and noise level are also shown When measuring channels in the satellite band or digital channels to measure the C N ratio correctly the bandwidth of the channel must be defined previously using the Channel BW function on the TV mode functions menu IMPORTANT REMARK To measure digital channels C N ratio in Auto mode it is indispensable to tune channel at its central frequency In the case of the presence of adjacent digital channels these could mask the noise level measurement when operating in Auto mode Therefore you are recommended to use the Referenced mode IMPORTANT REMARK In the case of an analogue terrestrial signal when C N Auto mode is selected the PROLINK 2 Premium performs an in channel measurement this involves that C N value will take several seconds to stabilize six seconds at the most An arrow below the C N readout represents the measurement cycle and it is necessary to wait the arrow passes twice on the same point to guarantee a correct measurement Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 06 2004 FAX 781 665 0780 TestEquipmentDepot com Page 33 USER S MANUAL PROLINK 2 Premium 4 9 1 4 Measuring the Power of Digital Channels Channel power The PROLINK 2 Premium offers two different methods to measure digital channels power according to the active operation mode Automatic method in T
76. power off mode that is the device is automatically disconnected fifteen minutes after the last time a key has been pressed When turning on the unit automatic power off mode may be deactivated by holding down the o key until you hear two acoustic indications later MANUAL POWER message will appear on the lower side of the monitor When the device is operating it is also possible to select the manual power off mode by means of the Manual power function of the TV functions menu Page 14 06 2004 USER S MANUAL PROLINK 2 Premium 4 OPERATING INSTRUCTIONS 4 1 Description of the Controls and Elements Front panel a A 3 C 6 a PROLINK 2 Premim TV amp SAT LEVEL METER 9 49 8 Figure 1 Front panel 1 On Off key This turns on the instrument and the user can select either manual or automatic power off 2 OSD key Enables the measurement information format displayed on screen in TV mode level measurement to be selected It allows also to visualize the TV image corresponding to the input digital signal Activation deactivation of teletext Zoom function E3 Activation of VOLUME CONTRAST BRIGHTNESS control menus 3 4 Rotary selector button This has many different functions tuning control moving between the various on screen menus and sub menus and validation of the different options Test Equipment Depot 800 517 8431 99 Wa
77. press it again 4 9 2 18 Equipment Information This function displays information on the instrument To activate it press the rotary selector 4 while in the TV operation mode Turn the rotary selector 4 to the Equipment Info function and press The monitor will show the EQUIPMENT INFO screen listing several informations such as the instrument serial number Serial Number the version of the control program Version etc To exit the function press the rotary selector 4 4 9 2 19 Exit Exits from the TV functions menu 4 10 Spectrum Analyser Operating Mode The Spectrum Analyser mode allows the user to discover the signals present in the frequency band in M and easily and to make measurements at the same time To select it press key Ua 21 The monitor will show a picture like the one described in the next figure 06 2004 Page 55 USER S MANUAL PROLINK 2 Premium 767 15 MHz 135 4 dBuV Figure 26 Spectrum Analyser mode The horizontal lines define the signal level the broken lines being separated a distance equals to the half value defined by the dynamic range See function Dynamic Range The level of the top line 70 dBuV in previous figure named the Reference Level can be altered using the Reference level function in the Spectrum Analyser mode functions menu over a range from 10 dBuV to 130 dBuV by steps of 10 section 4 10 1 3 The signal level for each frequency is displayed vertically the lower freque
78. r operating as a conventional television set TV LV Monitor operating as a conventional television set with a level indicator on the upper part of the screen the analogue bar TV LV SY Monitor operating as a conventional television set with a level indicator and the line synchronizing pulse displayed on the screen LV Signal level indication on the upper part of the screen analogue bar Operation in TV LV SY Mode This function permits to display the line synchronising pulse corresponding to a tuned signal on the monitor 3 To view the synchronisation pulse press key 23 turn the rotary selector 4 to TV LV SY mode and then press key ue 23 or the rotary selector 4 again The monitor is divided into three sections In the top section an analogue bar appears which indicates the level of the signal received 59 dBuV in figure 6 example On the left side the line synchronising pulse is represented as it would appear on the screen of an oscilloscope On the lower side the TV picture is shown Page 30 06 2004 Figure 6 Line synchoronism level TV TV LV SYNC Starting from the line synchronism representation it is possible to perform a qualitative analysis of the TV picture delivered to the end user 4 9 1 2 Measuring the Video Audio Ratio V A In the Video Audio measurement mode the screen displays the following information Figure 7 Video Audio rate measurement In addition to the vid
79. rding to the active standard 4 50 5 50 5 74 6 00 6 26 6 50 AM FM LV OFF 5 80 6 50 6 65 6 80 7 02 LV OFF Page 5 USER S MANUAL PROLINK 2 Premium CONFIGURATION FOR MEASURING DIGITAL PARAMETERS TUNING COFDM from 40 to 862 MHz Resolution 166 kHz BW 8 MHz 125 kHz BW 7 MHz and 6 MHz QPSK from 950 MHz to 2150 MHz Resolution 500 kHz LEVEL RANGE COFDM 45 dBuV to 100 dByV QPSK 44 dBuV to 114 dByV IMPEDANCE 75Q MEASUREMENTS COFDM Parameters BER after Viterbi MER selectable CSI Channel Status Information selectable Qualitative measurement about channel quality Measures from 0 to 100 0 value corresponds to maximum quality Presentation Numeric and level bar QPSK Parameters BER before Viterbi BER after Viterbi Presentation Numeric and level bar WRONG PACKETS Number of non correctable packets accumulated during the measurement time and indicates when the fault was produced Identification according to levels 1 1 1 2 1 3 and 2 1 of TR 101 290 ETSI standard COFDM SIGNAL PARAMETERS Carriers 2k 8k Selected by the user Guard Interval 1 4 1 8 1 16 1 32 Selected by the user Code Rate 1 2 2 3 3 4 5 6 7 8 Modulation QPSK 16 QAM 64 QAM Spectral inversion Selectable ON OFF Hierarchy Indicates hierarchy mode FEC Reed Solomon 204 188 and Viterbi QPSK SIGNAL PARAMETERS Bandwidth IQ signals variable 10 MHz to 30 MHz in 2 5 MHz steps Simbol r
80. rning the rotary selector 4 select the configuration to be retrieved a number between 1 and 99 CENE Pressing the 25 key again or the rotary selector 4 will retrieve the configuration Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 06 2004 FAX 781 665 0780 TestEquipmentDepot com Page 67 A PROM USER S MANUAL PROLINK 2 Premium Figure 33 RECALL screen retrieving a measurement configuration 4 13 Direct Access to Functions Keys 28 and 29 give direct access to any of the functions on the TV and Spectrum Analyser mode functions menus To establish a relationship between the direct access key and a function access the functions menu select the function you 9 wish to access directly and press key 28 or 29 From then on when you press key 28 or 29 the function will be accessed directly To directly execute a previously edited DiSEqC program pressing the key assigned to the program will execute the memorised command 4 44 Printing the Spectrum By connecting the instrument to a serial printer it is possible to obtain the spectrum showed on screen This enables the user to keep a file about the state of the system and provide the documents related for analysis purposes The Cl 23 portable printer is a PROLINK 2 Premium optional accessory The installation process consists of simply using the data transfer cable to connect the printer to the RS 232C connector 37 on the PROLINK 2 Premium
81. rocess is completed shown by a white square crossing through the three pilot frequencies Figure 20 Sat IF test selection satellite band analogue channels Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 06 2004 FAX 781 665 0780 TestEquipmentDepot com Page 49 A PROM USER S MANUAL PROLINK 2 Premium MHz MHz MHz dBuV dBuV dBuV dBuV dBuV dBuV Figure 21 Sat IF test Figure 22 Calibrate function selection for Sat IF Test 2 MEASUREMENT OF THREE PILOTS THROUGHOUT THE NETWORK Once PROLINK 2 Premium has been calibrated connect the RP 050 to the point where it will be connected the satellite dish signal source and start to take level measurements in the different distribution outlets using the PROLINK 2 Premium On the screen will appear the attenuation values for the three pilot frequencies measured in the outlet plug see the following figure Page 50 06 2004 AX USER S MANUAL PROLINK 2 Premium A PROM 1050 0 MHz 1575 5 MHz 2100 0 MHz REF 90 0 dBuV 91 0 dBuV 90 5 dBuV TEST 78 0 dBuV 74 3 dBuV 65 0 dBuV ATT 12 0 16 7 25 5 Figure 23 Attenuation measurements in a plug In order to finish of measuring press the rotary selector 4 and select from FUNCTIONS menu the End Test option 4 9 2 13 NICAM Channel Use this function to verify NICAM sound modulations in stereo and dual you can also select the sound channel coming over the speaker
82. rrent is flowing to the external unit If any kind of problem occurs e g a short circuit an error message appears on the monitor SUPPLY SHORT the acoustic indicator will be heard and the instrument will cease to supply power The PROLINK 2 Premium does not return to its normal operating state until the problem has been solved Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 06 2004 FAX 781 665 0780 TestEquipmentDepot com Page 25 USER S MANUAL PROLINK 2 Premium 4 9 TV Operating Mode 4 9 1 Selecting the Measurement Mode MEASURE The types of measurements available depend on the band the standard and the operating mode Terrestrial band Analogue channels Level Level measurement of the currently tuned carrier Video Audio Video carrier to audio carrier level ratio C N Ratio between the modulated signal power and the equivalent noise power fora same bandwidth There are two methods to make this measurement selectable through the C N setup function Auto In channel measurement Noise level is measured at a frequency where modulation contents is minimum After a small period of time minimum measured level corresponds to noise level Referenced The user defines the frequency where noise level will be measured by means of the Reference noise function This frequency will be used to measure noise level for all channels Terrestrial band Digital channels Channel power Automatic me
83. ry selector 4 until it is marked e g Level in the previous figure then press the rotary selector 4 or key eo 22 to activate the selected measurement mode 4 9 1 1 Measuring the Video Carrier Level Level If you select the Level measurement mode the screen shows a window with the signal level when selected with the OSD key 2 see next section WARNING If a sudden signal level increase is produced at the RF input and it is beyond the total signal levels of Terrestrial band 95 dBuV Satellite band 105 dBuV the tuning circuit may become out of control giving as a result wrong level measurements If this situation occurs disconnect the input signal change to Spectrum Analyser mode and select a Reference Level of 130 dBuV Then connect the signal again and modify the Reference Level according to present signals Similar effects can be observed when at the RF input appears an important number of carriers with a high level To be able to determinate the equivalent level of a carrier group with similar levels at the RF input it is possible to use the expression Page 28 06 2004 USER S MANUAL PROLINK 2 Premium LL 10 log N Ly equivalent total level L average level of the carriers group N number of carriers So if there are ten carriers with a level around 90 dBuV their equivalent level will be 90 dBuV 10 log 10 100 dBuV Observe that in this case loss of tuning by overload of the RF input may o
84. shington Street Melrose MA 02176 06 2004 FAX 781 665 0780 TestEquipmentDepot com Page 15 USER S MANUAL PROLINK 2 Premium Tuning purposes turning it clockwise frequency increases while turning it anticlockwise frequency decreases To shift along the on screen menus turning it clockwise active option moves downwards while turning it anticlockwise active option moves upwards In TV mode press the rotary selector button to display the first sub menu containing different functions some are dependent on the band and the standard Band switching System amp Standard Battery amp Lnb Channel set Channel BW Teletext DiSEqC Reference noise Permits to change from terrestrial 45 862 MHz to satellite band 900 2150 MHz and vice versa Selects the colour system PAL or SECAM and the TV standard B G D K I L or Digital Displays battery voltage and external units power supply voltage and current V Ext and I Ext Selects active channels table Satellite band or digital channels Defines channel bandwidth Indispensable for measuring digital channels and satellite band channel C N Sets teletext information Only satellite channels Defines a sequence of DiSEqC commands and permits to send them Only in C N Reference noise mode Defines the frequency where measure the noise level Press Next for the second sub menu Input Video C N setup Nicam channel Search level Lnb local osc Vide
85. sor on the command you want to make the change and then press the rotary selector 4 Insert function will appear on the screen by turning the rotary selector it is possible to select Delete and Edit functions Once the desired function appears on the screen Insert Delete or Edit press the rotary selector If you select Delete function the command will be removed from the sequence if you select Insert or Edit functions you must define the new command as previously described Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 06 2004 FAX 781 665 0780 TestEquipmentDepot com Page 53 USER S MANUAL PROLINK 2 Premium Once commands sequence is defined to send it to the peripherals press key 31 repeatedly until you have selected the Send function and then press the rotary selector 4 At the same time as DiSEqC commands are sent these appear on the lower side of the monitor If Send function does not appear on the monitor place the cursor over the Clear function and turn the rotary selector It is possible to delete the whole of the commands sequence to do this press key 31 repeatedly until you have selected the Clear field and then press the rotary selector 4 If Clear function does not appear on the monitor place the cursor over the Send function and turn the rotary selector To exit DiSEqC function place the cursor over the Exit field and then press the rotary selector 4 REMARK When disconnecti
86. ter numeric data C DIRECT ACCESS KEY Direct access key which can be assigned to any function on any menu Key number 9 to enter numeric data TUNING BY CHANNEL OR FREQUENCY Switches tuning mode between channel and frequency In channel mode the tuning frequency is defined by the active channels table CCIR OIRT See channel frequency tables in Appendix A Decimal point key to enter numeric data MANUAL FREQUENCY SELECTION SHIFT Enables the desired frequency to be directly tuned using the numeric keyboard Also acts as a SHIFT key for moving across different fields on some screens FAX 781 665 0780 TestEquipmentDepot com Page 21 35 36 37 38 39 Page 22 USER S MANUAL PROLINK 2 Premium EXT SUPPLY A RS 232C EA EA Figure 3 Side panel connections RF amp RF signal input Maximum level 130 dByV Universal connector for F F or F BNC adapter with input impedance of 75 Q ATTENTION N Note the importance to protect the RF 37 input signal with an accessory to block the AC voltages used in CATV cables needed to feed the amplifiers and remote mode External 12 V power supply input Scart socket RESET button Enables the user to restart the instrument if there is any irregularity in its functioning If it is necessary to reset the instrument press the reset button with the instrument turned off Connector RS 232C Enables the remote control of the PR
87. thod channel power is measured assuming that power spectral density is uniform throughout channel bandwidth To measure it correctly it is indispensable to define the Channel BW C N Two methods selectable through the C N setup function Auto Out channel measurement Noise level is measured at fnoise ftuning Channel BW To measure it correctly digital channel must be tuned at its central frequency Referenced The user defines the frequency where noise level will be measured by means of the Reference noise function This frequency will be used to measure noise level for all channels BER COFDM Obtains the error rate for the signal found in the tuned channel After processing for a few seconds the screen on the PROLINK 2 Premium shows the type of modulation the CSI Channel Status Information or the MER measurement modulation error ratio selectable by means of the option COFDM Setup from functions menu as well as the BER error rate for the digital signal after error correction BER after Viterbi the latter two are shown in Page 26 06 2004 analogue form as a bar graph The instrument also shows the channel or frequency with the corresponding deviation the number of wrong packets received during the measurement time W P and information on the type of digital Multiplex detected MPEG2 Network Provider Bouquet which appears cyclically on the screen Satellite band Analogue channels Level Level measurement of
88. unctions menu if necessary turn it to select the Band switching function and then press it again The RF band will be switched automatically 2 Press key G3 31 and select a frequency on the new band using the numeric keyboard The fifth digit and second decimal act as confirmation For example if the active band is the 900 to 2150 MHz band and you wish to tune the 49 MHz frequency belonging to the 5 45 to 862 MHz band press key 81 and then enter 49 00 or 049 0 using the numeric keyboard Alternatively the rotary selector 4 can be pressed to indicate the end of the numerical entry 3 Recall a memory with a tuning frequency belonging to the band you wish to access See section 4 12 Measurement Configuration Memories Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 06 2004 FAX 781 665 0780 TestEquipmentDepot com Page 23 USER S MANUAL PROLINK 2 Premium 4 5 Channel Tuning Frequency Tuning Pressing key 30 the PROLINK 2 Premium switches from frequency tuning to channel tuning and back again In channel tuning mode turning the rotary selector 4 sequentially tunes the channels defined in the active channels table see the Channel set function in the TV mode functions menu section 4 9 2 7 Selecting the Channels Table When turning it clockwise frequency increases while turning it anticlockwise frequency decreases In frequency tuning mode there are two ways of tuning 1 Turning th
89. vel measured is indicated numerically in absolute values and optionally on an analogue bar shown superimposed on the monitor image that facilitates the detection of the maximum level Moreover in the LV sound mode the loudspeaker emits a tone whose frequency depends on the level of the signal received which is very useful when installing antennas It is also possible to display on screen the line synchronism pulse like on an oscilloscope screen The Spectrum Analyser mode enables all the signals on a band to be viewed on the monitor at the same time to measure analogue channels level C N ratio referenced to a noise frequency defined by the user and digital channels power using an integration method The bandwidth of the measuring filter can be modified to improve frequency resolution This is an indispensable feature as high channel density is present on all transmission systems today Spectrum display can be varied between full span the entire band and 8 MHz terrestrial or 4 MHz satellite In addition there are two markers in order to locate and list frequencies to read signal level and frequency difference and the level between both In the satellite band the PROLINK 2 Premium incorporates a new function for the analysis of the narrow band signals Il offers two additional span levels of 8 MHz and 4 MHz with a resolution of 50 kHz All functionality in spectral mode has been improved adding the possibility of extending the graphical pr

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