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1. A PROM USER S MANUAL PROLINK 4 4C Premium QAM 64 QAM 6875 kSymb 400 00 Mhz MER 19 7 BER 1 0E 2 Figure 29 QAM Constellation Zoom function 4 9 1 5 6 COFDM Constellation Diagram 2 3 To select the COFDM Constellation Diagram mode Select the TV operating mode If present operating mode is the spectrum analyser 1 mode press key 21 Select the terrestrial band for the measurement of COFDM modulated signals Available frequency ranges are COFDM signals 40 MHz to 862 MHz Select the DIGITAL operating mode by means of the key 20 2 Select the BER COFDM measurement mode to do this press s 22 and turn the rotary selector 4 to select the BER COFDM measuring mode 2 next to activate it press the rotary selector 4 or key 22 Before visualizing the representation of the Constellation Diagram is necessary to define some parameters concerning the digital signal see section 4 9 1 5 2 Measuring BER of COFDM Digital Channels COFDM 5 Press the rotary selector 4 to access the functions menu in digital mode and select the Constellation option to access the Constellation Diagram screen Turn the rotary selector 4 to select the carrier and by means of key 31 and turning the rotary selector 4 to tune the DVB T COFDM digital signal to be graphically shown Page 56 10 2004 USER S MANUAL PROLINK 4 4C Premium A PROMAX CARRIER 101 630 0 MHz CSI 28 BER
2. Next itis shown the BER after Viterbi measurement both in numeric and graphic bar format In a reception system of terrestrial digital signal after the COFDM 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 4 4C Premium provides the BER after Viterbi and the number of Wrong packets received after Reed Solomon Figure 16 COFDM reception system The BER measurement is provided in scientific notation i e 3 1 E 7 means 3 1x10 7 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 0x10 that is to say 2 wrong bits of each 10000 This value is marked on the measurement bar of t
3. If any key or the rotary selector is pressed during the acquisition process the acquisition process will abort and the screen will display the message DL STOPPED Datalogger deactivated 4 9 4 4 4 Exiting the Datalogger Function To exit the Datalogger function select the Exit field using key 6 31 then press the rotary selector 4 4 9 4 4 5 Example of Datalogger Function Applications The Datalogger function has many applications such as channel equalisation and measuring signal attenuation at each pickup Band Equalisation frequency acquisition For this application you will need to use a noise generator as the signal source in the place of a receiver antenna If lets say you wish to verify equalisation on the VHF band then 1 Define the following tuning frequencies at 8 memory positions from 50 to 450 MHz in 50 MHz steps The measurement to be taken will be the level measurement In the Datalogger function activate the columns related to the memories defined in the previous step Next place the cursor on the row where you want to store the measurements and press the rotary selector 4 until the first of the cells blinks The measurements obtained will allow you to verify if the signal level is uniform across the entire band Page 76 10 2004 USER S MANUAL PROLINK 4 4C Premium LAE SMa Measuring signal level fluctuation at a pickup acquisition over a time period 1 Define the acquisition time inte
4. 4 6 Automatic Transmission SCarCh a seeeesesteteeseeteneeeeeneeeesieetettieeneeneeeirenntaas 4 7 Selecting Analogue Digital Mode ec cecceeceeetecteseeeeeneeeteeseaeseeeieaenees 4 8 External Units Power Supply EXT SUPPLY 4 9 TV Operating Mode ceeeeeeteecteesteetteeetteeeeeees 4 9 1 Selecting the Measurement Mode MEASURE cccecccceeesteeetetsteeteeetees 29 4 9 1 1 Measuring the Video Carrier Level Level 32 4 9 1 1 1 Changing the measurement information format eceeeseeeeeee 32 4 9 1 1 2 Selecting TV Mode TV LV SY TV MODE we eeeeeeeceesteeteeeeee 33 4 9 1 2 Measuring the Video Audio Ratio V A ccceeeceesecteeetseetteeeteees 35 4 9 1 3 Measuring the Carrier Noise Ratio C N ceeeeeceeeeteeeeeesteeeteenees 35 4 9 1 4 Measuring the Power of Digital Channels Channel power 37 4 9 1 5 BER measurement mode Selection ececseesteereeseeeteeseesteneeeentees 39 4 9 1 5 1 Measuring BER of QAM Digital Channels DVB C QAM 40 4 9 1 5 2 Measuring BER of COFDM Digital Channels DVB T COFDM 43 4 9 1 5 3 Measuring BER of QPSK Digital Channels DVB S QPSK 48 4 9 1 5 4 Measuring Wrong Packets of TS MPEG 2 W P eceeeteeteeeeeeeee 51 4 9 1 5 5 QAM Constellation Diagram ccccccccsecetecseeeseeeteetsteeeesneeeiees 53 4 9 1 5 6 COFDM Constellation Diagram eccccceesceceeeeeteetsteeseeteeenees 56 4 9 1 6 Digital audio broadcasting measurement DAB 0 ees eee eseeteesetteeneentenes 57 4 9 2
5. 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 or 1 MHz Satellite channels 50 kHz 230 kHz or 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 and 50 kHz filters are recommended for measuring terrestrial television cable television and MMDS signals They 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 12 Acquisition mode Offers three acquisition modes Maximum Hold Minimum Hold and Continuous by default 4 10 1 13 Detection mode Offers two detection modes Average and P eak by default 4 10 1 14 Selecting the Channels Table CHANNEL SET See 4 9 4 7 section 4 10 1 15 Batteries and External Units Power Supply BATTERY amp LNB See 4 9 4 3 section 4 10 1 16 Exit Exits from the Spectrum Analyser function menu 4 10 2 Selecting the Measurement Mode The Spectrum Analyser mode permits to make different measurements
6. 1 0E 7 Figure 30 Constellation Diagram of a DVB 64 COFDM fair digital signal The PROLINK 4 4C Premium incorporates in addition the ZOOM function to extend the presentation to only a quadrant between four available ones Press the key repeatedly to change of quadrant and to switch on or off the zoom function It allows so a more detailed analysis of the observable effects and facilitates therefore the accurate diagnosis about causes or agents responsible for the digital signal deterioration see figure 31 COFDM 8k 64 QAM CARRIER 101 630 0 MHz CSI 28 BER 1 0E 7 Figura 31 QAM Constellation Zoom function 4 9 1 6 Digital audio broadcasting measurement DAB The PROLINK 4 4C Premium incorporates the functionality of tuning demodulating and decoding DAB terrestrial emissions ETS 300 401 To select the DAB measurement mode 1 Select the TV operating mode and terrestrial band If present operating mode is 1 the spectrum analyser mode press key 21 10 2004 Page 57 USER S MANUAL PROLINK 4 4C Premium 2 3 Select the DAB measurement mode to do this press wey 22 and turn the rotary selector 4 to select the DAB measuring mode next to activate it press the 2 rotary selector 4 or key 22 Once set up the necessary parameters for tuning and measuring a DAB signal the PROLINK 4 4C Premium after some seconds offers the possibility of monitoring the decoded digital radio
7. 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 dBuV in 10 dB steps The default reference level is 70 dBuV 10 2004 Page 91 USER S MANUAL PROLINK 4 4C Premium To alter the value of the reference level select the Spectrum Analyser mode functions menu turn the rotary selector 4 to select the Reference 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 Dynamic Range It allows to zoom in or to zoom out the visualization vertical scale by means of selecting the following values for the screen divisions 2 5 and 10 dB div 4 10 1 5 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 select the active marker Marker B gt A or Marker A gt B or return to using only one marker Single marker Figure 60 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
8. 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 dBpV 5 2 RS 232C serial port The PROLINK 4 4C 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 Figure 70 RS 232C connector External view PIN No SIGNAL CHARACTERISTICS 1 Carrier detect not connected 2 Data Receive RxD 3 Data Transmit TxD 4 Data Terminal Ready DTR Fixed at 12 V 5 Ground GND 6 Data Set Ready DSR not connected 7 Request to Send RTS 8 Clear to Send CTS 9 Ring Indicator not connected Table 8 Description of the RS 232C connector 5 3 Parallel Input Connector LVDS D 25 Direct input of Transport Stream MPEG 2 DVB LVDS Low Voltage Differential Signaling signals Data input speed Maximum 60 Mbits s Minimum 1Mbits s 10 2004 Page 107 USER S MANUAL PROLINK 4 4C Premium Signal amplitude Maximum 2 0 Vpp Minimum 100 mVpp Terminal impedance 100 Q resistive 5 4 Parallel Output Connector LVDS D 25 Output consisting of MPEG 2 DVB Transport Stream signals corresponding to the RF signal reaching the instrument 25 24 23 22 21 20 19 18 17 16 15 14 Figure 71 Parallel Connector LVDS D 25 External view The signals running through this connector are the fo
9. Measures from 0 to 100 0 value corresponds to maximum quality Numeric and level bar Graph Constellation BER before FEC Forward Error Correction MER Modulation Error Ratio and Constellation Diagram Numeric and level bar Graph Constellation 10 2004 USER S MANUAL PROLINK 4 4C Premium Ama QPSK Parameters BER before FEC BER after Viterbi MER selectable 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 DCI FUNCTION DVB channel identifier Provides information on the channel whose BER is being measured 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 QAM SIGNAL PARAMETERS Demodulation 16 32 64 128 256 QAM Simbol rate 1000 to 7000 kbauds Carrier frequency deviation 0 08 x Symbol rate Roll off a factor of Nyquist filter 0 15 Spectral inversion Selectable ON OFF QPSK SIGNAL PARAMETERS Bandwidth IQ signals variable 10 MHz to 30 MHz in 2 5 MHz steps Simbol rate 2 to 45 Mbauds Carrier frequency deviation 0 05 x Symbol rate
10. PROLINK 4 4C Premium 6 3 Replacing the Battery Battery must be replaced whenever the capacity of the fully 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 044 battery The battery can be bought in your habitual PROMAX supplier Explosion or fire hazard can occur if other battery type is used Figure 76 Battery compartment CAUTION The battery used can present fire or chemical burn hazard if itis severely mistreat Do not disassembly or cremate or heat the battery above 100 CT under no circumstances 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 Page 114 10 2004 USER S MANUAL PROLINK 4 4C Premium Ama IMPORTANT NOTICE The configuration data and all data stored in the memories will be lost when the battery is disconnected Place and c
11. Roll off a factor of Nyquist filter 0 35 Code Rate 1 2 2 3 3 4 5 6 7 8 and AUTO Spectral Inversion Selectable ON OFF VIDEO Format MPEG 2 DVB MP ML Conditional access types Common interface according to available user CAM Patent pending Uncoded FTA standard Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 FAX 781 665 0780 TestEquipmentDepot com BASE BAND SIGNAL Transport Stream Interface Maximum frequency Output Amplitude differential Maximum Minimum Input Amplitude differential Minimum 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 USER S MANUAL PROLINK 4 4C Premium DVB P 50 Mb s parallel LVDS D 25 Connector 450 mV 250 mV parallel LVDS D 25 Connector 100 mVpp 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 5 Ww According to DiSEqC 1 2 standard 7 2 V 13 Ah Li lon battery gt 2 hours in continuous mode 4 hours starting of completely discharged instrument off 12 V 51W After 15 minutes without operating on any control Deactivable OPERATING ENVIRONMENTAL CONDITIONS Altitude Temperature range Max relative humidity
12. Satellite band digital carrier Equivalent to case B but now using the 4 MHz BW filter On selecting the Carrier Noise measurement mode the screen displays the following information Page 36 10 2004 USER S MANUAL PROLINK 4 4C Premium Figure 10 Carrier to noise ratio measurement Auto mode As well as the video carrier noise level ratio 20 1 dB in previous figure the frequency or channel depending on the tuning mode selected and the level 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 atits 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 4 4C 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
13. 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 10 2004 Page 77 USER S MANUAL PROLINK 4 4C Premium 4 9 4 7 Selecting the Channels Table Channel set The PROLINK 4 4C 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 channel 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 4 8 Measurement Units The PROLINK 4 4C Premium offers three measurement units to measure level and channel power dB uV 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 w
14. 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 DIRECT ACCESS KEY Direct access key which can be assigned to any function on any menu Key number 8 to enter numeric data DIRECT ACCESS KEY Direct access key which can be assigned to any function on any menu Key number 9 to enter numeric data 10 2004 Page 23 USER S MANUAL PROLINK 4 4C Premium 30 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 31 eS 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 tees seer Figure 3 Side panel connections 35 Connector RS 232C Enables the remote control of the PROLINK 4 4C Premium from a personal computer as well as data dumping to a printer 36 RESET button Enables the user to restart the instrument if there is any irregularity in its functioning If it is necessary to reset
15. a file about the state of the system and provide the documents related to the level measurements for analysis purposes The Cl 23 portable printer is a PROLINK 4 4C 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 4 4C Premium 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 To print measurements select the Datalogger function on the functions menu see section 4 9 4 4 Datalogger function access the configuration menu activate the print field Print On and switch on the printer From now on the printing process is equivalent to taking measurements The following figure shows an example of printing two activated columns memories 1 and 2 and two activated rows test points 1 and 2 10 2004 Page 103 USER S MANUAL PROLINK 4 4C Premium PROMAX ELECTRONICA S A LOCATION SIGNATURE DATE 01 01 2004 TIME 08 54 00 TEST POINT A lt 1 gt 1 Ch 23 Meas Lv Frequency 487 25 MHz Level 69 dBuVv 4 2 gt 2 Ch Meas Lv Frequency 621 25 MHz Level 75 dBuv DATE 01 01 2004 TIME 08 55 00 TEST POINT 2 lt 1 gt L Ch 23 Meas Lv Frequency 487 25 MHz Level 70 dBuV lt 2 gt 2 Ch Meas Lv F
16. 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 NTSC PAL M Digital PAL PAL N SECAM B G SECAM L SECAM D K NTSC M 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 System Lines Channel Video sound Video Audio y Ea Bandwidth separation EA a 625 50 7mh MHz 55MWz O 55MWz O Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 FAX 781 665 0780 TestEquipmentDepot com USER S MANUAL PROLINK 4 4C Premium System Lines Channel Video sound Video Audio y frame Bandwidth B Mode Mode 525 60 Table 5 Selectable terrestrial analogue standards and their characteristics 4 9 4 3 Battery and External Units Power Supply BATTERY amp LNB This function allows you to chec
17. activating the reset process for it the reset button 36 must be pressed when the instrument is off Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 FAX 781 665 0780 TestEquipmentDepot com USER S MANUAL PROLINK 4 4C Premium In Spectrum Analyser mode the first sub menu displays the following functions Band switching Span Reference level Dynamic range Dual marker Marker B gt A Marker A gt B Single marker Carrier Ref Noise Permits to switch from terrestrial 5 862 MHz to satellite band 900 2150 MHz and vice versa 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 This last one only in satellite band Defines the reference level between 10 and 130 dBuV 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 Ref Noise Carrier function Ref Noise Carrier Only when measuring C N R
18. at the same time you see the signals present in the band The types of measurements available are Page 94 10 2004 USER S MANUAL PROLINK 4 4C Premium WEEE 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 Terrestrial band Digital channels Channel power Integration method It 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 2 Like in the TV mode to select the type of measure press key 22 then turn the rotary selector 4 until desired mode is marked and finally press the rotary selector 2 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 mo
19. between them 4 10 1 6 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 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 Page 92 10 2004 USER S MANUAL PROLINK 4 4C Premium WEEE 4 10 1 7 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 well press key 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 8 Channel Bandwidth Marker gt Channel BW Only in Channel Power measurements Permit
20. column will be taken as many times as there are activated rows as specified by the time interval between measurements defined in the configuration menu Measure interval Process place the cursor on the column you want and press the rotary selector 4 until the first active cell is highlighted If no measurement matrix row has been previously activated the bottom of the screen will show the error message NOT CELLS SEL No cells selected b Acquisition of different measurements at the same moment Multiple measurements in a row will be taken as specified by the measurement configurations defined in all the activated columns 10 2004 Page 75 USER S MANUAL PROLINK 4 4C Premium c Process place the cursor on the row you want and press the rotary selector 4 until the active cells are highlighted If no measurement matrix column has been previously activated the bottom of the screen will show the error message NOT CELLS SEL Multiple acquisitions All the measurements defined by all the activated rows and columns will be taken in the case where more than one row has been activated the time interval between measurements will be that defined in the Measure interval field of the configuration menu Process to start the acquisition select the Run function and press the rotary selector 4 If no measurement matrix element has been previously activated the bottom of the screen will show the message NOT CELLS SEL
21. 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 4 4C 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 If there is a chrominance carrier defect then the television colour amplifier must function at maximum gain which could result
22. 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 Page 98 10 2004 USER S MANUAL PROLINK 4 4C Premium The PROLINK 4 4C 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 63 RDS EBB 0 BCN Pl E239 CORF TP ON gt INFORMATION Radio Barcelona FM 96 9 59 2dBuV 96 90 MHz Figure 63 RDS service information When pressing the mo 2 takes place an update of the emission received data In order to exit FM function select a measurement from SOUND menu by pressing the key 4 11 2 Tone function When the LV function is selected the speaker of the PROLINK 4 4C 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 me
23. of a CAM module or a SMART CARD in a wrong position might produce the instrument malfunction and could generate damages to the equipment 10 2004 Page 111 USER S MANUAL PROLINK 4 4C Premium WEEE 6 MAINTENANCE A 6 1 Considerations about the Screen model PROLINK 4C Premium This paragraph offers key considerations regarding the use of the colour screen taken from the specifications of the manufacturer In the TFT display the user may find pixels that do not light up or pixels that are permanently lit This should not be regarded as a defect in the TFT In accordance with the manufacturer quality standard 9 pixels with these characteristics are considered admissible Pixels which are not detected when the distance from the surface of the TFT screen to the human eye is greater than 35 cm with a viewing angle of 902 between the eye and the screen should not be considered manufacturing defects either It is advisable a viewing angle of 152 in the 6 00 o clock direction in orden to obtain the optimum visualization of the screen See following figure 159 PROLINK 40 Premiui m DIGITAL TV amp SAT LEVEL METER Figure 75 Optimum viewing of the screen 6 2 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 125V SMD 10 2004 Page 113 USER S MANUAL
24. sound 2 Select the DIGITAL operating mode by means of the key 20 REMARK Ifitis not possible to detect any DAB channel make sure that signal level is not too low check that the 40 dB attenuator is not activated Attenuator 0 dB Figure 32 DAB signal detection The measurement screen of DAB signal parameters shows SNR e Signal to Noise Ratio dB Measurement range from 0 dB to gt 25 5dB CODED BER CBER The error level of the received signal is indicated by means of the coded BER measurement in which the edge of service level is defined EOS for each selected audio component So and as it is indicated on the instrument measurement screen the reference values are REMARK EOS 4 0E 2 Limit of subjective quality according to ETSI TR 101 758 recommendation Page 58 10 2004 USER S MANUAL PROLINK 4 4C Premium AK PROMAx lt 1 0E 3 optimal reception From 1 0E 3 to 3 0E 2 good reception From 3 0E 2 to 6 0E 2 fair reception From 6 0E 2 to 1 0E 2 poor reception gt 1 0E 1 bad reception The numerical value of this measurement also appears on the upper right corner of the screen LOST SYNC It states the number of times that is lost the detection of DAB signal in the specified time This counter of synchronism losses is reinitiated whenever a new channel or a frequency is selected Figure 33 List of available DAB audios Each DAB multiplex contains a number of services an
25. 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 31 and then enter 49 00 or 049 0 using the numeric keyboard Page 26 10 2004 USER S MANUAL PROLINK 4 4C Premium WEEE 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 4 5 Channel Tuning Frequency Tuning Pressing key 30 the PROLINK 4 4C 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 4 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 the rotary selector 4 Turning the rotary selector 4 selects the desired frequency tuning is continuous from 5 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 5 the frequency list
26. to the more lower reachable value In the next line it is shown the number of non correctable packets received wrong packets up to a maximum of 126 in the time detailed on its right A packet is considered wrong when one at least non correctable bit is detected To reset this measurement just modify the measurement conditions for example change the tuned frequency Finally it is shown a status line which displays 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 MPEG 2 Correct detection of a MPEG 2 signal The BER is showed Page 42 10 2004 USER S MANUAL PROLINK 4 4C Premium WEEE In case of detecting a DVB signal message MPEG 2 DVB C will appear and the DVB Channels Identifier function will be automatically activated See section 4 9 2 DVB Channels Identifier DCI function IMPORTANT REMARK DVB C 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 a
27. would appear on a screen of an oscilloscope 3 To change the TV mode press key 23 and the following screen will appear 10 2004 Page 33 USER S MANUAL PROLINK 4 4C Premium Figure 7 TV mode selection Turn the rotary selector 4 to choose the information you want to be displayed on screen Press the rotary selector 4 or key u 23 to activate the selected display mode The operation modes available are TV Monitor 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 To view the synchronisation pulse press key u 23 turn the rotary selector 4 to TV LV SY mode and then press key UH 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 8 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 pic
28. 31 again to go to the minutes field and define these in the same way Finally press key E 31 again to validate the defined time interval Page 72 10 2004 USER S MANUAL PROLINK 4 4C Premium A PROMAX You can make as many acquisitions as there are activated rows in the measurement matrix if only one row has been activated then only one measurement will be taken In the case where the Datalogger function has been programmed to take more than one measurement in the time domain i e more than one row has been activated and the acquisition interval is greater than four minutes then every time an acquisition is made the instrument will reprogram the alarm for the next measurement Then it will switch itself on three minutes before the time defined in the Measure Interval field in order to warm up and ensure the highest accuracy 3 STARTING ACQUISITION PROGRAMMING THE ALARM To program the instrument to take measurements and or print outs at a specific time you must define the time and date the measurements are to be taken Start acquisition time If this field is not defined the acquisition of measurements will have to be activated manually see section 4 9 4 4 3 Taking Measurements When programming the alarm be sure to have checked that the date and time have been correctly defined beforehand Clock function paragraph 4 9 4 5 and to have selected previously one measurement to be taken at minimum see section 4 9 4 4 2 Sele
29. 5 Verification of Wi Fi systems Wi Fi AQA1G INPUTS sicidscdidatducniitetnn E E NA A 4 9 4 17 NICAMCHANMEL d ccccecscensiacaccentsasd qctuhcatcavasasncsdusacedenan ssanmnesietataaientin 4 9 418 Search Level 4 9 4 19 Teletext 4 9 4 20 DiSEqC Command Generator 4 94 21 BOOP seeren 4 9 4 22 Equipment Information 4924 23 EX ania nonn 4 10 Spectrum Analyser Operating Mode eses 4 10 1 Spectrum Analyser Mode Functions Menu 4 10 1 1 Band Switching eects ALOT 2 Spanar A anaa a aE NA 4 10 1 3 Reference Levels in A 4 10 1 4 Dynamic Range se 4 10 1 5 Dual Marker Single Marker FLO 1 6 SWEEP sipinesnoiprneinninises iaia i iaia Naaien NA hA AANA A EA aa 4 10 1 7 Reference Noise Carrier gt Ref NoiSe sscsscscicricinrerin 4 10 1 8 Channel Bandwidth Marker gt Channel BW 4 10 1 9 Marker Channel BW Marker eee 4 10 1 10 Carrier Ref Noise Carrier oo eseeseeseeenseeseeneeteeneeneeeeeees 4 10 1 11 Bandwidth of the Spectrum Measuring Filter Measure bandwidth 93 4 10 1 12 Acquisition Mode wo ee eccee cee ene eeeeeetneeeeeceeeeteeteeseeaetsaeneesaas 4 10 1 13 Detection Mode 0 ee ceeeeseeteenetetteeteeneeneenreaae 4 10 1 14 Selecting the Channels Table CHANNEL SET 4 10 1 15 Batteries and External Units Power Supply BATTERY amp LNB 94 ATO LO AE XI An past vedi ta a ye a E Ea a N reece 94 Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 FAX 781 665 0780 TestEqui
30. 67 Connector RS 232C PROLINK 4 4C Premium Pins numbering 10 2004 Page 105 USER S MANUAL PROLINK 4 4C Premium 4 14 2 Cl 23 set up This point explains how to modify the Cl 23 printer set up CG 1 0 Figure 68 C 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 setup 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 PROGRAMME MODE Present setting are Data bits Parity Baud rate Country Print mode Auto off Emulation Standard DTR i Normal Figure 69 C l 23 setup Page 106 10 2004 USER S MANUAL PROLINK 4 4C Premium WEEE 5
31. 720x576 720 x 576 720 x 576 720 x 576 m SDTV 15 Mb s 15 Mb s 15 Mb s 20 Mb s ML SP ML MP ML SNR ML HP ML Low 352 x 288 352 x 288 4 Mb s 4 Mb s Ui MP LL SNR LL Table 4 Levels and profiles of MPE G 2 Max and typ 10 2004 values indicated Page 67 AA PROMAX USER S MANUAL PROLINK 4 4C Premium 4 9 4 TV Mode Functions Menu In TV operation mode press the rotary selector 4 to access the functions menu of the TV mode Figure 43 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 68 10 2004 USER S MANUAL PROLINK 4 4C Premium Aa 4 9 4 1 Selection of the RF Band Band switching Permits to switch from terrestrial 5 862 MHz to satellite band 900 2150 MHz and viceversa 4 9 4 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
32. 760 00 MHz Channel BW 8 00 MHz Channel Power 55 0 dBuV Figure 62 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 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 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 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 selector 6 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 10 2004 Page 97 USER S MANUAL PROLI
33. Connector LVDS D 25 bei 5 5 Scart DIN EN 50049 sssssssssisrsrsrsssrssursssnnsinanisrnrnrannrsenrnnntntiennrnnnrnnannrsnarnnnt 5 6 Connector for CAM modules and SMART CardS ssaseererrrnnns 110 6 MAINTENANCE a iiciscsassiscsscacssnaensstacasshascainansanistsnusnaiaaiiasnctncusnasasaciastantyeniaivenneaneas 113 6 1 Considerations about the Screen model PROLINK 4C Premium 113 6 2 Internal fuses which user Cannot replace oo eect steeeeeeeteeeeeeeee iwlls 6 3 Replacing the Battery 114 6 4 Cleaning Recommendations 00 0 eee cette tte eee e cette ects testes ninan nnna 115 USER S MANUAL PROLINK 4 4C Premium WEEE ADVANCED DIGITAL TV amp SAT LEVEL METER PROLINK 4 4C 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 4 4C 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 instrume
34. DVB Channels Identifier DCI fUNCHON 0 ee eeseeeteeeretteereeereeeeteeteeneentees 61 4 9 3 Decoding MPEG 2 DVB Channels access to Digital Services ee 63 USER S MANUAL PROLINK 4 4C Premium 4 9 4 TV Mode Functions M Nu ec eeceeseetettene entree etrenieeteeneeieeneneeteeneereentee 68 4 9 4 1 Selection of the RF Band Band SWItching 0 c ccccesceeesesteeeteeeees 69 4 9 4 2 Selection of the TV System and Standard System amp Standard 69 4 9 4 3 Battery and External Units Power Supply BATTERY amp LNB 70 4 9 4 4 Datalogger FUNGUO iirinn deer derail neni tiers 4 9 4 4 1 Configuring the Datalogger Function 4 9 4 4 2 Selecting the Measurement to be Taken oo ceeeceteeeteeseeeeeeeeees 4 9 4 4 3 Taking M aSUreMent ccceceeceeeetee eens eeeeeetsetieeeteeeetettaenieeenes 4 9 4 4 4 Exiting the Datalogger Function eses 4 9 4 4 5 Example of Datalogger Function Applications 4 9 4 5 COCK ss cient a E aaah tania anette 4 9 4 6 Input Video 4 9 4 7 Selecting the Channels Table Channel set 4 9 4 8 Measurement Units cceeseeeeseeeeeeseeneene 4 9 4 9 Power Off Mode Manual power 4 9 4 10 C N setup oe eectetetetteeeteeeeees 4 9 4 11 Channel Bandwidth Channel BW 4 9 4 12 LNB Local Oscillator Frequency Lnb local OSC nesses 4 9 4 13 Video Polarity 0 cece ere ett eee reese eeteeteeteeseeeeseeseeeaes 4 9 4 14 Verification of distribution networks SAT IF Test 4 9 4 1
35. NK 4 4C Premium Sound carrier 4 5 MHz above the picture carrier Sound carrier 5 5 MHz above the picture carrier 5 74 Selects the second carrier in DUAL or STEREO transmissions at Terrestrial 5 74 MHz of the picture carrier Sound carrier 5 8 MHz above the picture carrier Satellite 6 00 Sound carrier 6 0 MHz above the picture carrier 6 50 Sound carrier 6 5 MHz above the picture carrier Terrestrial Satellite NTUN BTUN Sound carrier 6 65 MHz above the picture carrier Satellite Sound carrier 7 02 MHz above the picture carrier Satellite Continuous tuning 4 00 a 9 00 MHz with narrow sound detection filter Terrestrial 110 kHz Satellite Continuous tuning 4 00 a 9 00 MHz with broad sound detection filter Terrestrial 240 kHz Satellite A NICAM decoding 7 i Terrestrial Tone whose frequency varies with the signal level Satellite Terrestrial Suppresses the sound Satellite Table 7 Sound modes 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 4 11 1 FM function access to RDS service The function FM allows to access to the information associated with the Radio Data System RDS
36. ROLINK 4 4C Premium 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 scale 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 Viterbi synchronized A digital carrier has been detected and the V
37. Test Equipment 99 Washington Street hae Depot Melrose MA 02176 many oo Fax 781 665 0780 1 800 517 8431 TestEquipmentDepot com TABLE OF CONTENTS I GENERA Emaan a pl saan e e ote it aide eal 1 1 1 Description acd 2 Specificato nS niscicevsssitintaee cevacd natnasvisenadtenetuato diaasesdiytagenuaeeaauetmearaten eee 4 2 SAFETY RULES sa tisssisastenscrssssimencentessteataatinennenmianairaiauanianinialaanitnemamamambentes 2 1 General safety rules 2 2 Descriptive Examples of Over Voltage Categories cceeceeeeeeeeeseeteeeeees 13 3 INSTALLATION picscis nscesctsciarineteateastgeha thats thatuhcubersasattanetideiainduabetsdahied delvedaniitedtuate 3 1 Power Supply 3 1 1 Operation using the External DC Charger cceccececcsesteeteseteeeteeeneees 15 3 1 2 Operation using the Battery 0 cect eee eters certs sniene renine 15 3 1 2 1 Battery Charging sani 3 2 Installation and Start up vivesscccsesteedecareaderesiavovedteaetiavbwdade ENEE EEEE EEEE EEEE EnEn 4 OPERATING INSTRUCTION S visscsiciscinnacaciaciceiin csatianamamenieneramamamamsnies 17 4 1 Description of the Controls and Elements eeeeeserrerrrreenernrrnn nn 17 4 2 Adjustment of Volume and Monitor Parameters ccecccseeeeeseeeeeeeseeteeetees 26 4 3 Selecting the Operation Mode TV Spectrum AnalySer seeessseseee eens 26 4 4 RF Band Selection 5 862 MHZ 900 2150 MHZ uu cesses eseeteeseeteeteenreaes 4 5 Channel Tuning Frequency Tuning esee
38. 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 3 Diseqc is a trademark of EUTELSAT Page 8 10 2004 USER S MANUAL PROLINK 4 4C Premium WEEE MECHANICAL FEATURES Dimensions 294 W x 106 H x 274 D mm without holster Weight 5 kg INCLUDED ACCESSORIES 1x CB 044 Rechargeable Li battery 7 2 V 13 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 AA 103 Car lighter charger 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 RP 050 IF simulator for TCI tests CV 245 Wi Fi band converter TI 125 DC converter to power supply DVB T antennas 10 2004 Page 9 USER S MANUAL PROLINK 4 4C Premium WEEE 2 SAFETY RULES A 2 1 General safety rules x Use this equipment connected only to systems with their negative of measurement connected to ground potential The AL 103 external DC charger is a Class I equipment for safety reasons plug it to a supply line with the corresponding ground terminal This equipment can be used in Overvoltage Category installations and Pollution Degree 2 environments External DC charger can be used in Overvoltage Category Il installation and Pollutio
39. are more brilliant than the non activated ones To deactivate a column follow the same steps as in activating it Page 74 10 2004 USER S MANUAL PROLINK 4 4C Premium A PROMAX To activate rows where you wish to store measurements use key E 31 to place the cursor on the rows field then turn the rotary selector 4 until itis over the row you want to activate and press the rotary selector 4 The activated rows are more brilliant than the non activated ones To deactivate a row follow the same steps as in activating it In the case of activating more than one row the time interval between the measurement of each row is determined by the Measure interval parameter defined in the configuration screen 1 minute by default By means of the Acquisition function itis possible to carry out the measurements referred to the most characteristic digital signal parameters BER or MER for QAM modulations BER CSI or MER for COFDM and MER VBER BER after Viterbi or CBER BER before Viterbi for QPSK and DAB signals CBER Coded BER and SNR see section 4 12 1 Storing a Measurement Configuration STORE Figure 48 Automatic measurements of the digital signals parameters 4 9 4 4 3 Taking Measurements In addition to execution by alarm see section 4 9 4 4 1 Configuring the Datalogger Function there are three more ways to take measurements a Acquisition over a time period of a measurement The measurement defined in a memory
40. asurement 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 Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 FAX 781 665 0780 TestEquipmentDepot com USER S MANUAL PROLINK 4 4C Premium Sound Type Error Type NICAM type a no NICAM is detected du dual NICAM st stereo NICAM mo mono NICAM Error indication of the bit error rate E 4 error rate lt 1e 5 E5 le 5 lt error rate lt 1e 4 E4 le 4 lt error rate lt 1e 3 E3 le 3 lt error rate lt 2 7 e 3 ET error rate gt 2 7 e 3 Therefore for example the indication Sound duE 4 has to be interpreted as NICAM sound is selected the detected NICAM is dual and the error rate is below le 5 4 12 Measurement Configuration Memories To facilitate measurement the PROLINK 4 4C 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 configurat
41. 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 Datalogger Sat IF Test Wi Fi Input Video C N setup Nicam channel Search level Page 18 Permits to acquire and to store up to 9801 measurements automatically Only satellite band analogue channels This selects the function for testing satellite distribution networks Only in satellite band This selects the function for testing wireless communication networks 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 10 2004 USER S MANUAL PROLINK 4 4C Premium Ama Lnb local osc Only satellite band It defines the frequency of the local oscillator L O of the LNB Video polarity Only satellite band analogue channels This selects the polarisation of the video carrier Press Previous for the first sub menu or Next to access the third one Clock Displays time and date and allows them to be modified Units Selects the measuring units dBuV dBmV or dBm Manual pow
42. converter Page 82 10 2004 USER S MANUAL PROLINK 4 4C Premium AK PROMAX Select the Wi Fi application from FUNCTIONS menu in TV mode and SAT band when the selection screen is shown Figure 53 press the rotary selector 4 on the Wi Fi option to enter to the display screen for the band frequency spectrum corresponding to 14 channels from 2412 to 2484 MHz at the ISM band 2400 to 2483 5 MHz that operate with CSMA CA Carrier Sense Multiple Access Collision Avoidance accessing Figure 53 Wi Fi function selection satellite band A screen with the spectral representation of the Wi Fi frequency band will appear Move the marker by means of the rotary selector 4 to locate it in each frequency or channel and to obtain the measurement of the existing power 2412 0 MHz v 24 dBuV Figure 54 Wi Fi band spectrum representation Press the key 2 to access to a screen with the following measurements corresponding to the frequency or channel indicated by the marker e Signal Strenght Measurement of the existing power value e Peak Holds the last acquired maximum of the signal power e Max Peak Holds the registered maximum value 10 2004 Page 83 USER S MANUAL PROLINK 4 4C Premium Figure 55 Wi Fi power measurements When turning the rotary selector 4 a change of the frequency or channel tuned is made updating the visualised measures REMARK When the spectrum analyser mode is use
43. correct measurement 4 9 1 4 Measuring the Power of Digital Channels Channel power The PROLINK 4 4C Premium offers two different methods to measure digital channels power according to the active operation mode Automatic method in TV mode and Integration 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 10 2004 Page 37 A PROM USER S MANUAL PROLINK 4 4C Premium measurement is more accurate but slightly slower see 4 10 2 Selecting the Measurements Mode The obtained measurements using these methods may differ some CBs specially when the digital signal is degraded Potencia de un canal digital Digital channel power Puissance d un canal num rique TV mode Spectrum Channel BW Channel BW Marker Marker N Medida de la potencia por integraci n Power measurement by integration method Mesure de la puissance par integration Measure BW Medida de la potencia m todo autom tico Power measurement by the automatic method Mesure de la puissance par le mode automatique Figure 11 Measuring digital power Page 38 10 2004 USER S MANUAL PROLINK 4 4C Premium A PROMAX On selecting the CHANNEL POWER measurement mode the screen displa
44. cquired Also the level meter incorporates the teletext function a DiSEqC command generator and permits to supply different voltages to the external unit 13 V 15 V 18 V 24 V terrestrial TV and 13 V 15 V 18 V 13 V 22 kHz 15 V 22 kHz 18 V 22 kHz satellite TV Furthermore the instrument comes with two parallel LVDS DVB PI connectors for the input and output of Transport Stream signals a connector for CAM modules PC Card that allows the insertion of subscriber conditional access cards and a EUROCONNECTOR or Scart connector for audio video input output The PROLINK 4 4C 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 measurements 2 Diseqc is a trademark of EUTELSAT 10 2004 Page 3 1 2 Specifications A USER S MANUAL PROLINK 4 4C Premium CONFIGURATION FOR MEASURING LEVEL AND POWER TUNING Tuning modes Resolution Automatic search Memory RF INPUT Impedance Connector Maximum signal Maximum input voltage DC to 100 Hz 5 MHz to 2150 MHz LEVEL MEASUREMENT Measurement range Terrestrial TV amp FM bands Satellite TV band Reading Digital Analogue Measurement bandwidth Audible indicator Accuracy Sub band Terrestr
45. ct a Reference Level of 130 dBpV 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 atthe RF input itis possible to use the expression L L 10 log N Lg 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 occur 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 Page 32 10 2004 USER S MANUAL PROLINK 4 4C Premium WEEE 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 In the case of tuning a FM transmitter that emits RDS se
46. cting the Measurement to be Taken To define the starting time of measurement acquisition repeatedly press key B 31 until the Start acquisition time field blinks then press the rotary selector 4 This will lead to a screen like the one shown below Figure 47 Defining the starting time of measurement acquisition The first line of this screen tells you if the alarm function is on ALARM On or not ALARM Off followed by the date and time the alarm has been set for and the last line shows the current time and date 10 2004 Page 73 USER S MANUAL PROLINK 4 4C Premium Repeatedly pressing key 31 cyclically activates the different fields in the following order Hour Minute Second Day and Month To alter any of these simply activate it turn the rotary selector 4 and press key 31 again Once you have updated all the alarm fields press the rotary selector 4 to validate them and exit the screen If before activating the alarm ALARM On no measurement matrix cell has yet been activated see section 4 9 4 4 2 Selecting the Measurements to be Taken the bottom of the screen will show the error message NOT CELLS SEL No cells have been selected followed by DL STOPPED Datalogger deactivated On reaching the time defined in the Start acquisition time field the instrument will switch itself on if it was switched off or go to the Datalogger mode if switched on to automatically take the measuremen
47. cy 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 4 13 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 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 Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 FAX 781 665 0780 TestEquipmentDepot com USER S MANUAL PROLINK 4 4C Premium 4 9 4 14 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
48. d it is advisable to set a suitable value for the input level by means of the Reference Level function see section 4 10 1 3 Also the acquisition mode Maximum Hold must be set using the Acquisition mode function from the functions menu In order to close the measurement press the rotary selector 4 and select the End Wi Fi option from the FUNCTIONS menu 4 9 4 16 Input TS The Input TS function enables the Transport Stream MPEG 2 DVB signals to be controlled There are three possibilities Automatic Represents the TS coming from the input connector 40 or otherwise from the internal demodulator Internal TS Represents the TS generated by the internal demodulator ExternalTS Represents the external TS coming from the input connector 40 To select the Scart operation mode access the TV mode functions menu for digital channels turn the rotary selector 4 to the Input TS function and press to activate it The monitor will show a screen labelled TRANS STREAM displaying the three available options as well as the Exit option Turn the rotary selector 4 to the mode you require then press to activate it Page 84 10 2004 USER S MANUAL PROLINK 4 4C Premium WEEE 4 9 4 17 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 To change the decoded channel access the TV mode functions menu select the Nicam channel function a
49. d channel you will be able to ask for decoding some video and or audio service 10 2004 Page 63 USER S MANUAL PROLINK 4 4C Premium Figure 36 Tuning a digital channel with acceptable BER level For decoding any service there are two possible procedures 1 Go to the service list option service list from functions menu in digital mode Figure 37 Selecting the service list function SERVICE LIST If the service table not has been totally acquired yet they will show differents waiting messages see figure 39 When it is available will be showed all the services contained in SDT table along with information about the service type and with an asterisk in case that the operator indicates one service partial or totally encrypted If it appears in green colour it means that the identified service is not available therefore it does not have audio nor video DTV Digital television service DR Digital radio sound service DAT Data broadcast service MOS Mosaic service Type defined as reserved form by Provider Table 3 Information about service type Page 64 10 2004 USER S MANUAL PROLINK 4 4C Premium AK PROMAx DVB SERVICES DVB SERVICES DTV TClub DR Intereconom a DTV Gran Via QCAPP DTV QoApp Pruebas DTV TV Net Club Guia SAGEM DOWNLOAD TMM DOWNLOAD EXIT yl Figure 38 Service table offered by Operator in the channel tuned 2 Press the
50. d each service can contain a number of components The PROLINK 4 4C Premium equipment shows a list of all the components audio or data available in the multiplex A screen with additional information appears when pressing the 2 key showing the multiplex service and its first component information Also the rotary selector can be pressed 4 to accede to the functions menu in TV mode and then for obtaining the whole list of available DAB audio for that digital channel DAB audio list Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 FAX 781 665 0780 TestEquipmentDepot com USER S MANUAL PROLINK 4 4C Premium ID E1A8 L CATALUNYA RADIO ID 0000E234 L gt CATALUNYA CULT ID 000E L gt CATALUNYA CULT MPEG 1 192 kb s Joint Stereo CHAN 11D Figure 34 Additional information about the available audio list Data showed are MULTIPLEX Multiplex name and its identifier SERVICE Service name and its identifier AUDIO Includes information about identification codification standard bit rate and audio mode detected e Standard e MPEG 1 Layer Il ISO IEC 11172 3 e MPEG 2 Layer Il ISO IEC 13818 3 e Audio mode Mono Dual channel J oint Stereo e e e e Stereo e Bitrate In case of MPEG 1codification e 32 48 56 64 80 96 112 128 160 192 kbit s in case of audio mono e 64 96 112 128 160 192 224 256 320 384 kbit s in case of audio stereo joint stereo a
51. de 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 10 2004 Page 95 USER S MANUAL PROLINK 4 4C Premium 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 ftuning Y2 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 Channel BW Reference noise Carrier Carr 650 00 MHz Noise 655 0 MHz Power 44 0 dBuV 07 ao Figure 61 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 functi
52. e TV mode functions menu see section 4 9 4 3 Batteries and External Units P ower 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 colour for charge level higher to 50 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 10 2004 Page 15 USER S MANUAL PROLINK 4 4C Premium 3 1 2 1 Battery Charging To fully charge the battery connect the instrument to the external DC charger l 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 itcan lose up to 10 of it
53. e ek aw i ae soe a ne 64 QAM Oe ee 64 QAM 6875 kSymb Os soe Oe ee a e 6875 kS yimb 400 00 Mhz Ri he ee ae 400 00 Mhz MER 23 5 bala pbs aba MER 23 5 BER 4 4E 4 Soo BER 94 4E 4 Figure 25 Constellation Diagram of a Figure 26 Signal showing nonbalanced signal with noise IQ levels QAM 64 QAM 6875 kSymb 400 00 Mhz MER 19 5 BER 1 0E 2 64 QAM 6875 kSymb 400 00 Mhz MER 19 5 BER 1 0E 2 Figure 27 Signal with noise and levels IQ Figure 28 Signal with phase error nonbalanced Such effects can induce to errors in the detection process and cause erroneous bits on recovered digital signal The PROLINK 4 4C Premium incorporates in addition the ZOOM function to extend the presentation to only a quadrant between four available ones Press the key repeatedly to change of quadrant and to switch on or off the zoom function It allows so a more detailed analysis of the observable effects and facilitates therefore the accurate diagnosis about causes or agents responsible for the digital signal deterioration see figure 29 REMARK In the equipments with colour screen PROLINK 4C Premium one visualizes qualitatively by means of a colour gradation the density of symbols that are concentrated in a certain area This scale of colours goes from black absence of symbols to the red one maximum density runing through blue and yellow in ascending order 10 2004 Page 55
54. e parameter adjustment process in an installation 10 2004 Page 87 USER S MANUAL PROLINK 4 4C Premium 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 Associated parameter General Assigned Switch Non assigned Switch Positioner Page 88 Sat A B Standby L O frequency H V polarisation Position A B Sw option A B Disable limits Enable limits Drive E seconds Drive E steps Drive W seconds Drive W steps Store position Goto position Table 6 DiSEqC commands A B High Low 1 to 127 1 to 128 1 to 127 1 to 128 1 to 255 1 to 255 10 2004 USER S MANUAL PROLINK 4 4C Premium Ama 4 9 4 21 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 press it again 4 9 4 22 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 funct
55. ected signal The possible messages that can appear and its meaning are showing the 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 itis 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 Page 46 10 2004 USER S MANUAL PROLINK 4 4C Premium A PROMAX 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 MP EG 2 signal In case of detecting a DVB signal message MPEG 2 DVB T will appear and the DVB Channels Identifier function will be automatically activated See section 4 9 2 DVB Channels Identifier DCI function The PROLINK 4 4C Premium also offers the possiblity of measuring the modulation error ratio MER CSI or BER before FEC simultaneously w
56. eferenced and after defining the Carrier gt Ref Noise Permits to change the tuning frequency by means of the rotary selector Marker gt Channel BW Only in Channel Power measurements Permits to define channel bandwidth see Channel BW Marker function Channel BW gt Marker Only when measuring Channel power and after defining Sweep Measure bandwidth Page 20 the Marker gt 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 without numeric data representation Selects the bandwidth of the spectrum measuring filter from among Terrestrial channels 50 kHz 230 kHz or 1 MHz Satellite channels 50 kHz 230 kHz or 4 MHz 10 2004 USER S MANUAL PROLINK 4 4C Premium WEEE 5 6 7 8 9 10 Acquisition mode Offers three acquisition modes Maximum Hold Minimum Hold and Continuous default Detection mode Offers two detection modes Average and Peak default DiSEqC Only satellite channels Defines a sequence of DiSEqC commands and permits to send them System amp Standard Selects the colour system PAL SECAM or NTSC and the TV standard B G D K I L M N or Digital Battery amp Lnb Displays battery voltage and external units power supply voltage and curre
57. elect the BER measurement mode to do this press ey 22 and turn the rotary selector 4 to select the BER measuring mode next to activate it press the 2 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 section 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 Once set up the necessary parameters for tuning and measuring the digital signals depending on used modulation type the PROLINK 4 4C Premium offers the possibility of visualizing the decoded digital TV images see section 4 9 3 Decoding MPEG 2 DVB Channels access to Digital Services 4 9 1 5 1 Measuring BER of QAM Digital Channels DVB C QAM Press the rotary selector to access the QAM signals parameters that must be defined by user and that are described below 1 Modulations It defines the modulation type When selecting this function and pressing the rotary selector a multiple choice menu will appear on the screen this menu permits to choose one of the following modulations 16 32 64 128 and 256 2 Symbol Rate When selecting this function and press
58. ell as the Exit option Turn the rotary selector 4 to the units you require then press to activate it 4 9 4 9 Power Off Mode Manual power The PROLINK 4 4C 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 4 10 C N setup To measure C N the PROLINK 4 4C Premium offers two different modes in TV mode C N Auto The PROLINK 4 4C Premium defines automatically the frequency where noise level is measured according with fhoise ftuning Y2 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 Page 78 10 2004 USER S MANUAL PROLINK 4 4C Premium Ama 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 selecto
59. enter numeric data 2 5 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 Page 22 10 2004 USER S MANUAL PROLINK 4 4C Premium WEEE 24 25 26 27 28 29 SEARCH This is the function for automatic station search Starting at the present frequency or channel it searches 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 5 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 CH oun 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 EXTERNAL
60. er Sets power off as Manual or Automatic Language Selects the language between DEUTSCH ENGLISH ESPANOL FRANCAIS 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 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 Nachst 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
61. esired 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 channel 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 10 2004 Page 43 USER S MANUAL PROLINK 4 4C Premium 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 Attenuator It permits to select attenuation between 0 20 and 40 dB It is advisable to activate the 40 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 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 correspo
62. essing the rotary selector 4 then turn it to select QPSK setup and finally press it again to activate it The monitor will show a screen displaying two measurement possibilities MER and BER before FEC to represent it by means of a graphical bar then turn the rotary selector 4 to select the desired option and finally press it to confirm Figure 21 MER measuring screen for QPS K modulated signals 4 9 1 5 4 Measuring Wrong Packets of TS MPEG 2 W P When the BER measurement indicates acceptable reception quality always to the left of the QEF level and the identification information confirms that you have found the required channel you can analyse the Wrong Packets received from the MPEG 2 DVB Transport Stream 10 2004 Page 51 USER S MANUAL PROLINK 4 4C Premium Press the rotary selector 4 to access the functions menu in digital mode and select the Wrong Packets option to access the W P measurement screen Figure 22 Selecting the W P measurement function WRONG PACKETS To select the options on this screen press button 31 and or the rotary selector 4 Figure 23 W P measurement According to the information appearing on the screen in figure 22 the demodulator has detected 45 W P events i e non correctable packets starting at 13 23 and for a time interval of 3 minutes On initiating an acquisition by pressing the rotary selector 4 over the Run option then appears a message warning
63. evel is measured at fhoise ftuning Channel BW To measure it correctly digital channel must be tuned at its central frequency Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 FAX 781 665 0780 TestEquipmentDepot com DVB C DVB T DAB USER S MANUAL PROLINK 4 4C Premium 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 Obtains the error rate for the signal found in the tuned channel After processing for a few seconds the screen on the PROLINK 4 4C Premium shows the type of modulation the MER modulation error ratio and the BER error rate for the digital signal before error correction BER before FEC the latter two are shown in 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 Obtains the error rate for the signal found in the tuned channel After processing for a few seconds the screen on the PROLINK 4 4C 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 functio
64. fication information even the service list will refer about the external TS If in this case it is required for visualizing digital video also the one of the external TS will be decoded 3 Once a service has been decoded when turning the rotary selector 4 will appear the information referred to the type of MPEG 2 received video Therefore it is possible also to directly visualise the video and the information associated to the list of services sequentially and cyclically Page 66 10 2004 USER S MANUAL PROLINK 4 4C Premium Figure 42 Description of the received MPEG 2 video In the example of previous figure MP ML Main Profile and Main Level determines the profile of the standard MPEG 2 which defines the compression rate of the digital service that is being decoded whereas 4 3 corresponds to the picture resolution level The following data 720x576 25 Hz states the resolution rows x columns for the received video and the image frequency of refreshment Following table contains the configurations that the PROLINK 4 4C Premium can detect and appear shaded the combinations in which video picture visualisation is supported PROFILES Simple Main SNR scalable Spacesca High SP MP SNR Spt HP High 1920 x 1152 1920 x 1152 HDTV standard 80 Mb s 100 Mb s HL MP HL HP HL High 1440 1440 x 1152 1440 x 1152 1440 x 1152 n HDTV 1440 60 Mb s 60 Mb s 80 Mb s al H14 MP H14 Spt H14 HP H14 gt Main
65. gger function it is necessary to store the measuring configuration s in the memory by using the Store function see paragraph 4 12 1 To select the Datalogger function activate the TV mode functions menu by pressing the rotary selector 4 when in the TV operation mode Then turn the rotary selector 4 to the Datalogger field and press it the DATALOGGER screen will appear automatically Figure 45 DATALOGGER screen As you can see in the previous figure the main screen of the Datalogger function has three functions Config Configuration Run and Exit Below these three functions is the measurements matrix three columns and five rows are simultaneously displayed in the previous figure the datalogger has three stored measurements one for each of the first three memories To access the various screen functions or fields press key B 31 repeatedly 4 9 4 4 1 Configuring the Datalogger Function The configuration menu of the Datalogger function allows you to choose between taking and or printing measurements programming the PROLINK 4 4C Premium to take measurements at a pre determined time defining the time interval between measurements erasing all measurements stored in the Datalogger function and automatically deactivating all the measurement configurations 10 2004 Page 71 USER S MANUAL PROLINK 4 4C Premium To define the configuration of the Datalogger function press key 31 repeatedly until you have selected
66. he BER and therefore BER for acceptable signals must be at the left side of this mark In the 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 10 2004 Page 45 USER S MANUAL PROLINK 4 4C Premium 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 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 Figure 17 Signalling two MPEG 2 signal cuts with a total length of 12 seconds Finally it is shown a status line with information about the det
67. ial bands Satellite band Overrange indication MEASUREMENTS IN TV MODE Terrestrial bands Analogue channels Digital channels Page 4 Digital frequency synthesis Continuous tuning from 5 to 862 MHz and from 900 to 2150 MHz Frequency Channel or Memory Channel plan configurable on demand 5 862 MHz 50 kHz 900 2150 MHz 500 kHz span FULL 500 200 100 50 32 16 MHz 50 kHz span 10 5 MHz Threshold level selectable 99 positions for measurement configurations 75Q Universal with BNC or F adapter 130 dB pV 50 V rms powered by the AL 103 power charger 30 V rms not powered by the AL 103 power charger 130 dB pV 20 dBuV to 120 dBuV 10 pV to 1 V 30 dBpV to 120 dBuV 31 6 uV to 1 V Auto range reading is displayed on an OSD window Absolute value calibrated in dBuV dBmV or dBm Relative value through an analogue bar on the screen 230 kHz Terrestrial band 4 MHz Satellite band maximum band ripple 1 dB LV audio A tone with pitch proportional to signal strength 1 5 dB 30 120 dBuV 5 45 MHz 22 C 5 C 1 5 dB 30 120 dBuV 48 25 861 MHz 22 C 5 C 1 5 dB 40 100 dBuV 900 2150 MHz 22 C 5 C Ty Level Video Audio ratio and Carrier Noise ratio Auto and Referenced Channel power Auto and Carrier Noise ratio Auto and Referenced 10 2004 USER S MANUAL PROLINK 4 4C Premium Satellite band Analogue channels Digital channels DATALOGGER function SPECTRUM ANALYSER MODE Satelli
68. imization 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 4 20 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 6 DISEqc is a trademark of EUTELSAT 10 2004 Page 85 USER S MANUAL PROLINK 4 4C Premium 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 56 DiSEqC programs screen This screen shows a list containing up to 6 DiSEqC programs appearing the first memory positions preset to facilitate the more used commutation operations the rest appears by default with name UNTITLED 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 Figure 57 DiSEqC commands screen DiSEqC screen is divided in 3 areas the field to edit the DiSEqC commands seq
69. 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 Page 90 10 2004 USER S MANUAL PROLINK 4 4C Premium Figure 59 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 functions 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 4
70. ing the rotary selector a multiple choice menu will appear on the screen this menu permits to choose one of the following values 6900 6875 6111 5000 4443 1528 1500 1408 1333 1266 1000 kbauds or well to define any other value by means of the Other option When selecting the Other option a screen titled QAM SYMBOL RATE will appear this screen shows present Symbol Rate value to modify it press key 31 enter the new value four figures and finally press the rotary selector to activate it 3 Spectral Inv If necessary activate the Spectral inversion If the spectral inversion is not correctly selected reception will not be correct 4 Attenuator It permits to select attenuation between 0 20 and 40 GB It is advisable to activate the 40 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 Page 40 10 2004 USER S MANUAL PROLINK 4 4C Premium must to maintain or to increase insufficient signal level but never to decrease In case of doubt you must consider that the correct attenuator setting 0 20 or 40 dB will be that corresponds to the best BER measurement value more low In case of doubt you must consider that the correct attenuator setting 0 to 30 dB will be tha
71. ing 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 that acts as confirmation The PROLINK 4 4C Premium will calculate the tuneable frequency closest to the entered value and then display it on screen 4 6 Automatic Transmission Search 4 In the TV mode by pressing the 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 4 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 10 2004 Page 27 USER S MANUAL PROLINK 4 4C Premium 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 ae Ame Use key 20 to switch between analogue and digital channels When switching to a new modulation the PROLINK 4 4C Premium activates the last measurement configuration used for that modulation Also it is possible to switch between analogue and digital modes by means
72. ion 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 The different measuring configurations can be retrieved with the Datalogger function in order to conduct different data acquisitions in a completely automatic way and store them in the memory for later print out or processing see paragraph 4 9 4 4 Datalogger function Itis possible to associate a specific measurement configuration with the execution of a previously edited DiSEqC program see 4 9 4 20 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 4 4C Premium freq channel band etc Page 100 10 2004 USER S MANUAL PROLINK 4 4C Premium 5 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 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
73. ion 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 4 23 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 quickly and easily and to make measurements at the same time Le To select it press key 21 The monitor will show a picture like the one described in the next figure 767 15 MHz 1 35 4 dBuV Figure 58 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 Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 FAX 781 665 0780 TestEquipmentDepot com USER S MANUAL PROLINK 4 4C Premium The signal level for each frequency is displayed vertically the lower frequencies appearing at the left of the screen and the higher ones at the right The amplitude of the lobes is calibrated In the
74. iterbi 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 will appear and the DVB Channels Identifier function will be automatically activated See section 4 9 2 DVB Channels Identifier DCI function Page 50 10 2004 USER S MANUAL PROLINK 4 4C Premium 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 40dB attenuator is not activated Attenuator 0 dB The PROLINK 4 4C Premium also offers the possiblity of measuring the modulation error ratio MER and BER before FEC for QPSK signals Once the QPSK signal parameters have been defined you can access to the digital mode function menu by pr
75. ith the BER after Viterbi 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 from second submenu and finally press it again to activate it The monitor will show a screen displaying three possibilities CSI MER and BER before FEC then turn the rotary selector 4 to select the desired option and finally press it to confirm Figure 18 MER measuring screen for COFDM modulated signals 10 2004 Page 47 USER S MANUAL PROLINK 4 4C Premium IMPORTANT REMARK DVB T channels tuning may require an adjusting process Itis 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 40 dB attenuator is not activated Attenuator 0 dB 4 9 1 5 3 Measuring BER of QPSK Digital Channels DVB S QPSK Press the rotary se
76. k 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 Y ou will see a screen like the following one Figure 44 Battery amp Lnb function The top part of the screen displays the 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 Page 70 10 2004 USER S MANUAL PROLINK 4 4C Premium 4 9 4 4 Datalogger Function The Datalogger function allows the user to carry out store and or print out up to 9801 measurements in a fully automatic way It may be understood as a measurement matrix whose columns address the 99 measuring configurations defined in the 99 memories of the equipment and whose lines permit to store 99 measurements for every measuring configuration conducted in different points of the system or in the same point on different times Before to proceed to take measurements by means of the Datalo
77. key 2 from BER measurement screen If the service table has been acquired the system will automatically go to decode the first service that contens video or audio In opposite case it will appear a first waiting screen while the process of data acquisition finalizes COFDM WAITING FOR SERVICE LIST 009 sec NETWORK TVNet Huelva NID 8916 PROVIDER SERVICE CSI 26 BER 1 0E 7 Figure 39 Waiting screen IMPORTANT REMARK Is necessary to indicate that all the services do not contain accessible information for a digital television decoder Acceding to the data services and the reserved ones the most probable is than neither appears video nor audio 10 2004 Page 65 USER S MANUAL PROLINK 4 4C Premium Figure 40 MPEG 2 DVB decoded channel Each Multiplex service can have more of an associated audio channel By defect when selecting a service will be selected first the audio one of available ones In 6 order to change the service audio to press the button Ci oa it will appear the audio list of selected service Each audio is identified with a label indicating the language if it is specified and a number corresponding to PID packet identifier of packets that contain the packet audio Figure 41 Audio list of selected service In case of using one RF signal and one TS external input simultaneously the BER information will talk about the demodulation of the RF signal whereas all the identi
78. key eS 31 the first 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 When the equipment works in digital mode press the key B 31 to accede to the measurement function that you wish to set up and select the parameter to store with the rotary selector 4 BER or MER for QAM modulations BER CSI or MER for COFDM and MER VBER BER after Viterbi or CBER BER before FEC for QPSK and for DAB signals CBER Coded BER and SNR 5 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 4 20 DiSEqC Command Generator and select the program to execute Figure 64 STORE screen storing a measuring configuration 10 2004 Page 101 USER S MANUAL PROLINK 4 4C Premium 6 Finally press 25 key or the rotary selector 4 and the configuration will be stored If any other key is pre
79. l 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 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 Itis 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 disconnecting 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 th
80. lector 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 When selecting the Other option a screen tited QPSK SYMBOL RATE will appear This screen shows present value to modify it press key E 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 selecta 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 itis 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 Page 48 10 2004 USER S MANUAL PROLINK 4 4C Premium 4 Attenuator It permits to select attenuation between 0 20 and 40 dB It is advisable to activate the 40 dB attenuator under that measurement conditions where the signal level is near to the maximum input level approximately starting from 20 dB
81. llowing PIN number SIGNAL CHARACTERISTICS 1 DCLK Clock for data word 2 GND Ground 3 DATA 7Data bit 7 MSB 4 DATA 6 Data bit 6 5 DATA 5 Data bit 5 6 DATA 4 Data bit 4 7 DATA 3 Data bit 3 8 DATA 2 Data bit 2 9 DATA 1 Data bit 1 10 DATA 0 Data bit 0 LSB 11 DVALID Valid data word 12 PSYNC Packet sync 13 Shield Ground 14 DCLK Clock for data word inverted 15 GND Ground 16 DATA 7 Data bit 7 MSB inverted 17 DATA 6 Data bit 6 inverted 18 DATA 5 Data bit 5 inverted 19 DATA 4 Data bit 4 inverted 20 DATA 3 Data bit 3 inverted 21 DATA 2 Data bit 2 inverted 22 DATA 1 Data bit 1 inverted 23 DATA 0 Data bit 0 LSB inverted Page 108 10 2004 USER S MANUAL PROLINK 4 4C Premium Ama 24 DVALID Valid data word inverted 25 PSYNC Packet sync inverted Table 9 Description of the Parallel Connector LVDS D 25 5 5 Scart DIN EN 50049 20 18 16 141210 8 6 4 2 EE gta PUP W PAP YP AP Ae EAP A 21 19 17 15 13119 7 5 3 1 N Figure 72 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 i
82. mic range and reference level 40 dBuV for correct synchronism Automatic selection according to the system Scart automatic or selectable 1 Vpp 75Q positive video Scart 75Q Scart Built in speaker Scart Page 5 Demodulation De emphasis Subcarrier Variable Fixed Terrestrial Satellite USER S MANUAL PROLINK 4 4C Premium 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 According 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 CONFIGURATION FOR MEASURING DIGITAL PARAMETERS TUNING COFDM Resolution QAM Resolution QPSK Resolution DAB Decoding LEVEL RANGE COFDM QAM QPSK IMPEDANCE MEASUREMENTS COFDM Parameters Presentation QAM Parameters Presentation Page 6 from 40 to 862 MHz 166 kHz BW 8 MHz 125 kHz BW 7 MHz and 6 MHz from 47 MHz to 862 MHz 50 kHz from 950 MHz to 2150 MHz 500 kHz Terrestrial band Ill from 174 to 240 MHz channels 5A to 13F Transmission modes 1 2 3 and 4 ETS 300 401 45 dBuV to 100 dBuV 45 dBuV to 110 dBuV 44 dBuV to 114 dBuV 75 Q BER after Viterbi BER before FEC Forward Error Correction MER selectable and Constellation Diagram CSI Channel Status Information selectable Qualitative measurement about channel quality
83. n Degree 1 environments When using some of the following accessories use only the specified ones to ensure Safety Rechargeable battery External DC charger Car lighter charger cable 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 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 Do not obstruct the ventilation system of the instrument Use for the signal inputs outputs specially when working with high levels appropriate low radiation cables Follow the cleaning instructions described in the Maintenance paragraph 10 2004 Page 11 Page 12 USER S MANUAL PROLINK 4 4C Premium Symbols related with safety DIRECT CURRENT ALTERNATING CURRENT DIRECT AND ALTERNATING GROUND TERMINAL PROTECTIVE CONDUCTOR FRAME TERMINAL EQUIPOTENTIALITY ON Supply OFF Supply DOUBLE INSULATION Class II Protection CAUTION Risk of electric shock CAUTION REFER TO MANUAL FUSE 10 2004 USER S MANUAL PROLINK 4 4C Premium 2 2 Descriptive Examples of Over Voltage Categories Ca
84. nd dual channel In case of MPEG 2 codification e 8 16 24 32 40 48 56 64 80 96 112 128 144 160 kbit s for all modes Page 60 10 2004 USER S MANUAL PROLINK 4 4C Premium WEEE It appears in case the provider emits it a line with dynamic information DLS in the lower part of the screen Equally the user will be able to select the component of audio to decode directly identifying it by its name by means of the rotary selector 4 turning 4 9 2 DVB Channels Identifier DCI function This function permits to identify DVB channels It provides information of channel on which the BER measurement is made as well as access to each one of the services contained in the resultant Multiplex of channel demodulation The DVB group recommends to digital TV service operators the transmission on the Transport Stream of some particular tables containing data information The Transport Stream is a sequence of packets of constant length which carry video audio and data information Data packets can be grouped to constitute TABLES some of these tables content information defined by the network operator and which show the type of service that is being supplied to the users Among the different data defined in these tables the most frequently used data for channel identification purposes are Network It contents the name given to the set of all the Transport Stream managed jointly inside of a network formed by several physical c
85. nd 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 4 18 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 4 19 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 E 31 and introduce the new number using the numeric keyboard third digit acts as confirmation If the page requested is not included in the Teletext service of the transmitter the search 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 opt
86. nds 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 contemplates 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 15 BER measuring screen for COFDM modulated signals Page 44 10 2004 USER S MANUAL PROLINK 4 4C Premium AK PROMAx Two measures are shown 1 CSI Channel status information or MER Modulation error ratio or BER before FEC 2 BER after Viterbi BER measured 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
87. nels 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 4 4C 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 presentation 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 4 4C 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 Also it includes a function specially designed for the analysis of the wireless communication networks Wi Fi Wireless Fidelity that works in the ISM Industrial Scientific and Medical band from 2400 t
88. nput 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 10 Description of the Scart Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 10 2004 FAX 781 665 0780 TestEquipmentDepot com Page 109 USER S MANUAL PROLINK 4 4C Premium 5 6 Connector for CAM modules and SMART Cards Enables the conditional access disencryption of encoded digital TV signals in agreement with the DVB CI Common Interface recommendation This technology supports all those disencryption systems for which a valid CAM module exists according to DVB CI with the corresponding subscriber card The PROLINK 4 4C Premium by means of Common Interface method offers the possibility of supporting various conditional access systems so that video and or audio broadcast by encrypted services ciphered pay TV may be decoded following the SimulCrypt model It provides a standard connector to insert CAM modules Conditional Access Module that allows a specific management of each codification system SimulCrypt is a process offering the use of various parallel conditional access
89. ns menu as well as the BER error rate for the digital signal 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 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 The DAB signals analyse functions allow to measure the SNR Signal to Noise Ratio and the CBER Coded BER as well as the number of signal losses and the information corresponding to the Multiplex detected Satellite band Analogue channels Level C N Page 30 Level measurement of the currently tuned carrier Ratio between the modulated signal power and the equivalent noise power for a same bandwidth Auto or Referenced 10 2004 USER S MANUAL PROLINK 4 4C Premium A PROMAX Satellite band Digital channels Channel power Automatic method C N Ratio between the modulated signal power and the equivalent noise power for a same bandwidth Auto or Referenced DVB S Obtains the error rate for the signal found in the tuned channel After processing for a few seconds the screen on the PROLINK 4 4C 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
90. nt 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 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 4 4C Premium supplies a current to the external unit CHARGER External 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 itis greater than 50 and green if the battery is fully charged MONITOR MAIN KEYBOARD 12 keys to select functions and entering numeric data 10 2004 Page 21 20 21 22 23 USER S MANUAL PROLINK 4 4C Premium Figure 2 Main keyboard 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
91. nt 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 5 to 862 MHz and from 900 to 2150 MHz makes PROLINK 4 4C Premium an excellent instrument for FM radio digital radio DAB terrestrial TV MATV Master Antenna Television cable TV CATV Community Antenna Television where the subband tuning margin from 5 to 45 MHz enables the user to carry out tests on the return channel satellite TV MMDS microwave links VSAT Very Small Aperture Terminal systems digital TV and Wi Fi Furthermore its high resolution frequency 50 kHz makes FM measurements much easier 1 Digital Video Broaacasting Trade Mark of the DVB Digital Video Broadcasting Project 2301 10 2004 Page 1 USER S MANUAL PROLINK 4 4C Premium The PROLINK 4 4C Premium includes the main TV standards M N B G I D K and L 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 SECAM and NTSC and allows the user to work directly with digital TV signals decoding them so that the television image may be viewed and directly measuring
92. o 2483 5 MHz Page 2 10 2004 USER S MANUAL PROLINK 4 4C Premium Ama 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 the radio data system RDS The equipment incorporates a specific module for the measurement of digital radio signals based on DAB Digital Audio Broadcasting technology that allows the tuning and to monitoring of DAB signals as well as to measure the parameters related to the signal quality and to display data and information related to the received signal 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 Moreover the DATALOGGER function permits the acquisition and storage of up to 9801 measures 99 configurations x 99 points of measure that makes it much easier to test systems in which a large number of measurements have to be made and enables further processing of all the information a
93. o 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 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 4 4C 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 definition of the selected standard 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
94. of System amp Standard from function menu 4 8 External Units Power Supply EXT SUPPLY The PROLINK 4 4C 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 A 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 5 MHz to 2150 MHz 130 dBpV 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 Band Powering voltages SATELLITE 13 V 22 kHz 15 V 22 kHz 18 V 22 kHz TERRESTRIAL Table 1 External units powering voltages Page 28 10 2004 USER S MANUAL PROLINK 4 4C Premium Ama 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 current 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 su
95. 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 4 4C Premium using the BNC F adapter Power on the RP 050 through the PROLINK 4 4C 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 49 press the rotary selector 4 to accede to the FUNCTIONS menu and using the rotary selector 4 to accede to the Calibrate function figure 51 Wait for some seconds until the calibration process is completed shown by a white square crossing through the three pilot frequencies Figure 49 Sat IF test selection satellite band analogue channels Page 80 10 2004 USER S MANUAL PROLINK 4 4C Premium MHz dBuV dBuV dBuV dBuV Figure 50 Sat IF test Figure 51 Calibrate function selection for Sat IF Test 2 MEASUREMENT OF THREE PILOTS THROUGHOUT THE NETWORK Once PROLINK 4 4C 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 4 4C Premium On the screen will appear the attenuation values for the
96. ommunication channels In case of satellite television also contains the satellite orbital position pointed by the parabolic dish This information is extracted from NIT Network Information Table Service It contents the names of video audio or data services present in the Transport Stream This information is extracted from SDT Service Description Table Bouquet It contents the name given to the set of all the services commercialized as one entity The information that in this case DVB defines as optional is extracted from BAT Bouquet Association Table or from SDT Provider It contents the provider name which offer certain services Within a Multiplex one each one of services can have its own provider but normally all services have a same provider This information is extracted analyzing the SDT In case the operator includes this information the three fields are not transmitted at the same time but they appear alternatively in different packets Besides the cadence of presentation of each one of these packets may vary from one operator to another DCI Device and Procedure patented by PROMAX ELECTRONICA S A Patent 9901632 10 2004 Page 61 A PROM USER S MANUAL PROLINK 4 4C Premium When tuning a DVB compatible transponder the DCI function DVB Channels Identifier detects those data packets including service information relative to these three fields and shows on the lower line on the screen the informati
97. on contained in them automatically Figure 35 DCI function In this example the information coded by the operator on the Provider and Network fields is the same The information that appears in the Network Service Bouquet and Provider fields is responsibility of the Operator in charge of the tuned transponder The PROLINK 4 4C Premium only decodes this information if itis present and shows it on the screen Page 62 10 2004 USER S MANUAL PROLINK 4 4C Premium WEEE 4 9 3 Decoding MPEG 2 DVB Channels access to Digital Services The MPEG 2 is an ISO IEC 13818 1 standard that defines the audio and video multiplexation in chains of bits form grouped in fixed length packets These standards offer two multiplexation layers the first one Packetized Elementary Stream manages the synchronization between video and audio whereas the second one depends on used transmission media For error free medias this layer is the Program Stream whereas at not error free medias is called Transport Stream In digital television is used the Transport Stream in which two types of packets can be distinguished clearly those that content packetized video or audio and those that content the information necessary to be able to accede to video or audio These last ones form the specific information of the programs PSI Program Specific Information and allow to construct a series of tables that store the organization of the programs or services
98. onnect 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 4 4C Premium and lock in place with the securing washer and screw A Ifyou wish replace the holster CAUTION All the components of the Lithium ion battery included in the CB 044 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 6 4 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 Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 FAX 781 665 0780 TestEquipmentDepot com
99. ons 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 4 4C 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 depending 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 Page 96 10 2004 USER S MANUAL PROLINK 4 4C Premium Channel Bandwidth Marker
100. oom function at 3 Activation of VOLUME CONTRAST BRIGHTNESS models PROLINK 4 4C Premium SATURATION and HUE for models PROLINK 4C Premium anathis last only for NTSC colour system control menus 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 10 2004 Page 17 USER S MANUAL PROLINK 4 4C 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 5 862 MHz to satellite band 900 2150 MHz and vice versa Selects the colour system PAL SECAM or NTSC and the TV standard B G D K I L M N 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
101. pmentDepot com USER S MANUAL PROLINK 4 4C Premium NESE 4 10 2 Selecting the Measurement Mode oo cece ceee eee eeteeete eter eeteeeeeessaetiaeenees 4 10 2 1 Measuring Carrier Levels Level nesses 4 10 2 2 Measuring the Carrier Noise ratio C N Referenced 4 10 2 3 Measuring the Power of Digital Channels Channel Power 96 4 11 Selecting the Sound Mode SOUND eect eee eeteeeeeteeetieeeeee 4 11 1 FM function access to RDS service 4 11 2 Tome FUNCTION oo etter renner renter ENNANENEENENEENEEEENEENEENENEEN ENNEN E EEEE EEEE 4 11 3 Selecting NICAM SOUNG Qu ecceeete cette eeeeee certs cteesieetieesteeenieesieesiees 4 12 Measurement Configuration Memories seese weak 4 12 1 Storing a Measurement Configuration STORE 100 4 12 2 Retrieving a Configuration RECALL w 102 4 13 Direct Access to FUNCTIONS eee eeeteseteeeseettetneettenaeeeeenee 102 4 14 Printing the Spectrum the Measurements and Memories 103 4 14 1 Handshake and Control Lin S seeeeseteeseeereeseeseenees we L05 4 14 2 Cl23 SQRRUD iiss caniinsicassecanscvdivessaiansienaiassasarsivansaeastassidacassadiaisiiaoaseacsudaiacnans 106 5 DESCRIPTION OF THE INPUTS AND OUTPUTS oascscseccrsnserenirns 107 SL 3 0 810 Sater igeeerrecrrc ie terre EAA A ttn cere tren mercer rrr 5 2 RS 232C Serial Port ee tee eee ANEN EEAEEEEEAAEEE EESE EEEEEAEE ENEAS EEEE 5 3 Parallel Input Connector LVDS D 25 ia 5 4 Parallel Output
102. ppear 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 40 dB attenuator is not activated Attenuator 0 dB 4 9 1 5 2 Measuring BER of COFDM Digital Channels DVB T 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 dead time 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 d
103. pply power The PROLINK 4 4C Premium does not return to its normal operating state until the problem has been solved 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 ratio C N Ratio between the modulated signal power and the equivalent noise power for a 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 The equivalent noise power measurement is carried out by means of a patented procedure of statistical stimation 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 method 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 l
104. r 4 to the mode you require then press to activate it 4 9 4 11 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 decimals 4 9 4 12 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 4 4C Premium has been connected Given that the PROLINK 4 4C Premium satellite channel tables have been defined in the Ku band and the PROLINK 4 4C 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 frequen
105. remium and this last only for NTSC colour system control menus 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 4 4C Premium has two basic operation modes TV and Spectrum Analyser To switch from one operation mode to the other press key m 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 5 862 MHz 900 2150 MHz Tuning is continuous between 5 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 functions 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 31 and select a frequency on the new band using
106. requency 621 25 MHz Level 74 dBuv Figure 66 Printing measurement Page 104 10 2004 USER S MANUAL PROLINK 4 4C Premium WEEE 4 14 1 Handshake and Control Lines Next is described the handshake and control lines used by the PROLINK 4 4C 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 Cl 23 Set up The control lines used are DATA TRANSMIT PROLINK 4 4C Premium pin 3 To send data to the printer CLEAR TO SEND PROLINK 4 4C Premium pin 8 Data transfer control Data are sent only when this line is active DATA TERMINAL READY PROLINK 4 4C Premium pin 4 This line is permanently active in order to indicate the establishment of the communication Connections The cable between the PROLINK 4 4C 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 _ 3 DATA TRANSMIT REQUEST TO SEND 4 _ 1 CARRIER DETECT CTS 5 lt Y 4DATA TERM READY DATA SET READY 6 lt GROUND 7 5 GROUND CARRIER DETECT 8 lt _ 7 REQUEST TO SEND DATA TERMINAL READY 20 r gt 6 DATA SEND READY gt 8 CLEAR TO SEND RING INDICATOR 22 9 RING INDICATOR 12345 6789 Figure
107. rval Measure interval 1 h for example 2 Activate a column a measurement configuration you consider significant 3 Activate the necessary number of rows to be able to perform the study over the decided upon period of time taking into account the previously defined acquisition interval e g for a 24 hour study with an acquisition interval of 1 h you will need to activate 24 rows 4 Finally place the cursor on the activated column and press the rotary selector 4 until the first active cell blinks The report obtained will allow you to guarantee the correct operation of the installation 4 9 4 5 Clock An internal clock permits to record date and hour of data acquisitions To modify the time date access the TV mode functions menu turn the rotary selector 4 to the Clock function and press to activate it The monitor will show a screen labelled CLOCK displaying the hour minute second day month and year To alter any parameter repeatedly press key eB 31 until the parameter you want to modify appears shadowed then turn the rotary selector 4 If you want to alter more parameters repeatedly press key 31 again To validate the changes made and exit press the rotary selector 4 4 9 4 6 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
108. rvice when pressing the key 2 will update the data represented on the screen In digital channels pressing 2 shows the corresponding TV image for the tuned digital signal You will need to have previously correctly configured the tuning process for the digital signal See 4 9 1 5 BER Measurement Mode Selection The time employed in decoding very much depends on the structure and quantity of data tables within the TS and the condition of your instrument but is generally less than 20 seconds It is also possible to select if you want to appear on the monitor information about digital measurements Three choices are offered and may be selected cyclically TV image with a window appearing at the bottom showing the readings associated with the signal and the information given by the tuned digital service Network Provider Bouquet TV image only Screen showing the digital parameters read by the instrument In all these cases the TV image can only be visualised if it is not encrypted FTA or if a suitable CAM module and the corresponding valid subscriber card are available When a DAB channel is decoded the key 2 allows to obtain on the screen all data associated to the tuned audio 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 4 4C Premium can act as an analogue level indicator and can display the line synchronising pulse just as it
109. s charge over 12 months 3 2 Installation and Start up The PROLINK 4 4C Premium level meter is designed for use as a portable device l When the 1 key is pressed the instrument is in the automatic 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 16 10 2004 USER S MANUAL PROLINK 4 4C Premium A PROMAX 4 OPERATING INSTRUCTIONS 4 1 Description of the Controls and Elements Front panel ca i SS Ca 6 B pa Q CHARGER PROLINK 4c Premium 7 DIGITAL TV amp SAT LEVEL METER 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 digital TV DAB to be selected It allows also to visualize the TV image corresponding to the input digital signal Activation deactivation of teletext Zoom function Activation deactivation of constellation Z
110. s 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 9 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 10 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 4 10 1 11 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 10 2004 Page 93 USER S MANUAL PROLINK 4 4C Premium 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
111. select the Constellation option to access the Constellation Diagram screen Turn the rotary selector 4 to tune the DVB C QAM digital signal to be graphically shown Observing QAM Constellation Diagrams In Constellation Diagram mode the monitor will show a screen like the following one QAM 64 QAM 6875 kSymb 400 00 Mhz MER 32 5 BER J1 0E 8 Figure 24 Constellation Diagram of a DVB 64 QAM fair digital signal In the first line is shown the Modulation Type 64 QAM Next indicate the Symbol Rate 6875 and the frequency of tuning 400 MHz Finally appear the values of MER and BER measurements This image corresponds to a correct digital signal Nevertheless the visualization of the Constellation Diagram can discover the existence of different deteriorations from the QAM modulated digital signal like the noise phase error and the nonlinearities All these can cause to a distortion or error in the location of the points on the Constellation Diagram For example the atmospheric noise can cause a simple location dispersion of these points as it is shown in figure 25 Also it can affect the transmission oscillator phase error causing additional uncertainty in the constellation figure 28 Page 54 10 2004 USER S MANUAL PROLINK 4 4C Premium WEEE In the following figures several Constellation Diagrams are shown as an example corresponding to differents common deteriorations in the digital transmission QAM QAM Oe S
112. selectable by means of the option QPSK Setup from functions menu as well as the BER error rate for the digital 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 To change the measurement mode press key 22 The screen will display a menu with the measurement modes which can be selected Figure 6 Measuring mode selection satellite band analogue channels To select a measurement mode turn the rotary selector 4 until it is marked e g Level in the previous figure then press the rotary selector 4 or key 22 to activate the selected measurement mode 10 2004 Page 31 USER S MANUAL PROLINK 4 4C Premium 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 dB uV Satellite band 105 dBpV 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 sele
113. ssed an error will be indicated and the memory will not be updated 4 12 2 Retrieving a Configuration RECALL Bra Press the 25 key The screen RECALL will appear on the monitor which shows the different parameters of each measuring configuration stored Turning the rotary selector 4 select the configuration to be retrieved a number between 1 and 99 Pressing the 25 key again or the rotary selector 4 will retrieve the configuration Figure 65 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 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 Page 102 10 2004 USER S MANUAL PROLINK 4 4C Premium WEEE 4 14 Printing the Spectrum the Measurements and Memories By connecting the instrument to a serial printer it is possible to obtain the spectrum showed on screen ora printed report of a sequence of measurements just at the moment they are taken or later if they are recorded with the Datalogger function This enables the user to keep
114. systems together with the encryption algorithms specified by DVB CSA Common Scrambling Algorithm to control access to pay TV services The Transport Stream of SimulCrypt broadcasts contains the keys for various conditional accesses thereby allowing reception by more than one type of decoder The user simply needs to insert the subscriber Smart Card in the CAM module connector designed for this purpose before or after the instrument has acquired the list of services and an encrypted service is then selected After a few seconds the image and or sound will have to appear In order to insert or to change a CAM module follow next procedure The CAM module connector 42 is located on the equipment upper panel Place the instrument on a stable surface and insert the module so the printed arrow appears on visible upper face until the button from extractor mechanism 43 becomes activated amnaow WYD Figure 73 CAM module insertion Page 110 10 2004 USER S MANUAL PROLINK 4 4C Premium WEEE Insert the subscriber card into the CAM module connector 42 being followed the direction that indicates the arrow printed on the card SUBSCRIBER SMART CARD Ep K Figure 74 Subscriber Smart Card insertion To extract an inserted CAM module press the button from extractor mechanism 43 and remove the module IMPORTANT REMARK The insertion
115. t corresponds to the best BER measurement value more low Once you have defined the QAM 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 13 BER measuring screen for QAM modulated signals First of all you will see the modulation error ratio measurement MER Analogue and digital carriers are very different in terms of signal contents and power distribution over the channel They therefore need to be measured differently The modulation error ratio MER used in digital systems is similar to the Signal Noise S N ratio in analogue systems The MER represents the proportion of power lost through wrong data with respect to the mean power of an ideal QAM signal To operate QAM 64 demodulators require an MER greater than 23 dB Though it is preferable to have at least a 3 or 4 dB margin to compensate for any possible degradation of the system While QAM 256 demodulators require an MER greater than 28 dB with margins of al least 3 dB Normally the maximum MER value seen in portable analysers is of approximately 34 dB Secondly itis shown the BER before FEC Forward Error Correction In a digital reception system for cable signals after the QAM demodulator an error correction method called Reed Solomon is applied see figure 14 Obviously the error rate after the corrector is lower to the error rate at the QAM decoder outp
116. te band Terrestrial bands Measurement bandwidth Terrestrial Satellite Span 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 10 2004 Level and Carrier Noise ratio Auto and Referenced Channel power Auto and Carrier Noise ratio Auto and Referenced Automatic acquisition of up to 9801 measurements 20 dBuV to 120 dBuV 10 pV to 1 V 20 dBuV to 120 dBuV 10 pV to 1 V 50 kHz 230 kHz 1 MHz selectable 50 kHz 230 kHz 4 MHz selectable Full span full band 500 200 100 50 32 16 8 MHz selectable Full span full band 500 200 100 50 32 16 10 5 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 TFT colour 5 inches PROLINK 4C Premium or B amp W 4 inches PROLINK 4 Premium PAL SECAM and NTSC M N B G 1 D K and L Graphic representation over the picture Variable span dyna
117. that the beginning of a new acquisition supposes the erasure of the data corresponding to the previous one Press the key 31 and the rotary selector 4 to confirm the action the instrument will record the events produced during reception of the MPEG 2 DVB Transport Stream in accordance with the TR 101 290 standard of the Measurement guidelines for DVB systems defined by the ETSI European Telecommunications Standards Institute Page 52 10 2004 USER S MANUAL PROLINK 4 4C Premium Ama TEST NAME CHARACTERISTICS Ll SINC P Loss of synchronization with consideration of hysteresis TS_sync_loss parameters 1 2 SINC B Sync_byte not equal 0x47 Sync_byte_error PID 0x0000 does not occur at least every 0 5 s A PID 0x0000 does not contain a table_id 0x00 i e a PAT Scrambling_control_field is not 00 for PID 0x0000 1 3 PAT PAT_error 2 1 TEI Transport_error Transport_error_indicator in the TS Header is setto 1 Table 2 Description of W P available tests Once an acquisition has been initiated the instrument automatically passes to MANUAL POWER mode to aid acquisition over the long term To finish acquisition press the rotary selector 4 over the Stop option then appears a validation request message to press the key a 31 and the rotary selector 4 for finishing the running acquisition The interruption of an acquisition supposes its definitive conclusion The first line on
118. that there are in the Multiplex as well as data about their conditional accesses in case they are encrypted The DVB standard adds to tables MPEG 2 a few tables more than they offer very useful complementary information in the case of digital television between which they emphasize the service table Service Description Table the network table Network Information Table and the bouquet table Bouquet Association Table In the list of services they will appear all the present services in the service table according to the ETS 300 468 standard Therefore will appear the decodable services by any digital television decoding system that satisfies the MPEG 2 DVB standard as well as the data services the utility reserved services by the operator and even the discontinuous transmission services that however have been specified in the service table outside of its hours of transmission The specification for the Service Information in DVB systems recommends that the table that contents the description of services SDT Service Description Table was faithful to services that at every moment are contained in the Multiplex Even so it is responsibility of the operator that content of this one and other tables is updated or that only correct information is contained When the BER measurement indicates acceptable reception quality always to the left of the QEF level and the identification information confirms that you have found the require
119. the Config field and then press the rotary selector 4 The configuration screen of the Datalogger function will then appear Figure 46 Configuration of the DATALOGGER function After an interval of half a minute without the PROLINK 4 4C Premium controls being touched it will automatically return to the Datalogger function main screen 1 TO MEASURE PRINT OR MEASURE AND PRINT First of all the user must indicate whether he wants to take measurements or to print them or to do both at the same time To do this press the 31 key repeatedly until positioned in the Measure field Then turn the rotary selector 4 to activate On or deactivate Off the measurement function and press 31 key The next step is to activate or deactivate the measurement printing function To do this use the key 31 to position the cursor in the Print field and activate it On or deactivate it Off turning the rotary selector 4 and pressing it validate the new state 2 MULTIPLE MEASUREMENTS INTERVAL BETWEEN MEASUREMENTS In the case of having to take multiple measurements at different times the Measure interval will have to be defined This field specifies the time interval between measurements print outs To define it from the Datalogger configuration screen repeatedly press key 31 until the section dealing with time in the Measure interval field has been activated define the hours by turning the rotary selector 4 then press key
120. the instrument press the reset button with the instrument turned off Page 24 10 2004 USER S MANUAL PROLINK 4 4C Premium WEEE RF RF signal input 37 Maximum level 130 dBpV Universal connector for F F or F BNC adapter with input impedance of 75 Q ATTENTION A 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 38 External 12 V power supply input 39 Scart socket 40 Parallel Input Connector LVDS D 25 Direct input of MPEG 2 DVB Transport Stream signals 41 Parallel Output Connector LVDS D 25 Output consisting of MPEG 2 DVB Transport Stream signals corresponding to the RF signal reaching the instrument D i qj Figure 4 Connector for CAM modules Figure 5 Button for extracting CAM external view modules 10 2004 Page 25 USER S MANUAL PROLINK 4 4C Premium 42 Connector for CAM module Enables the conditional access disencryption of encoded digital TV signals 43 Button for activating the CAM module extractor mechanism It allows the expulsion of CAM module inserted into the connection socket 4 2 Adjustment of Volume and Monitor Parameters te Repeatedly pressing key 3 sequentially activates the VOLUME CONTRAST BRIGHTNESS for models PROLINK 4 4C Premium and the SATURATION and HUE for PROLINK 4C P
121. 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 The PROLINK 4 4C Premium allows to obtain as much a graphical representation of the Constellation Diagram for DVB C QAM as DVB T COFDM signals 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 level 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 Itis 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 chan
122. the screen shows the events that have been detected once at least from the acquisition beginning Should any of the events on table 2 be produced these will be displayed cyclically indicating the number in case of being W P class i e non correctable packets Turn the rotary selector 4 to access the list of events recorded in different pages To leave the screen once you have finished the acquisition use key 31 to select Exit and press the rotary selector 4 9 1 5 5 QAM Constellation Diagram To select the QAM Constellation Diagram mode 1 Select the TV operating mode If present operating mode is the spectrum analyser i ee Jl 21 mode press key 2 Select the terrestrial band for the measurement of QAM modulated signals Available frequency ranges are QAM signals 47 MHz to 862 MHz 3 Select the DIGITAL operating mode by means of the key 20 10 2004 Page 53 A PROM USER S MANUAL PROLINK 4 4C Premium 2 4 Select the BER QAM measurement mode to do this press ey 22 and turn the rotary selector 4 to select the BER QAM measuring mode next to 2 activate it press the rotary selector 4 or key 22 Before visualizing the representation of the Constellation Diagram is necessary to define some parameters concerning the digital signal see section 4 9 1 5 1 Measuring BER of QAM Digital Channels QAM 5 Press the rotary selector 4 to access the functions menu in digital mode and
123. three pilot frequencies measured in the outlet plug see the following figure 10 2004 Page 81 USER S MANUAL PROLINK 4 4C Premium 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 52 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 4 15 Verification of Wi Fi systems Wi Fi This application allows to verify the response of the Wi Fi communication networks Wireless Fidelity that is a communication standard for wireless connectivity based on the IEEE 802 11b g protocol by means of the spectrum monitoring of used frequency band and the discrimination among the active channels The procedure implies the following steps and elements REMARK For this application is advised to use the PROMAX CV 245 frequency converter for which it has been specially designed 1 INSTALLATION Connect the CV 245 to the PROLINK 4 4C Premium directly by means of connector adapter BNC F Power supply the CV 245 through the PROLINK 4 4C Premium for it select the Ext supply function see section 4 8 External Units Power Supply by means of pressing the key 27 and the rotary selector 4 select a voltage of 13 V IMPORTANT REMARK Using power supply voltages higher than 13 V should be avoided due to that could damage the CV 245
124. ti Catll Cat Ill CatlV 10 2004 Low voltage installations isolated from the mains Portable domestic installations Fixed domestic installations Industrial installations Page 13 USER S MANUAL PROLINK 4 4C Premium WEEE 3 INSTALLATION 3 1 Power Supply The PROLINK 4 4C Premium is a portable instrument powered by one 7 2 V 13 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 4 4C Premium side panel Connect the DC charger to the mains Then press the PROLINK 4 4C 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 th
125. ts and or produce the print out 4 ERASING MEASUREMENTS STORED IN THE DATALOGGER AND AUTOMATIC DEACTIVATION OF ALL THE CELLS The configuration screen also allows you to erase all the measurements stored in the Datalogger function as well as automatically deactivating all the activated measurement configurations To erase the stored measurements select the Clear field and press the rotary selector 4 To deactivate the measurement configurations select the Unselect field and press the rotary selector 4 5 EXITING THE CONFIGURATION SCREEN To exit the Datalogger function configuration screen press the rotary selector 4 4 9 4 4 2 Selecting the Measurement to be Taken Once the Datalogger function has been configured activate the measurement configuration s columns which you would like to use The headings of the measurement matrix columns of the Datalogger function coincide with the number of memorised measurement configurations simply place the cursor over each column and you will see the more important parameters displayed at the bottom of the screen name assigned to the memory position frequency channel measurement mode and units of measurement To activate the measurement configurations repeatedly press key B 31 until the cursor is placed on the columns field next turn the rotary selector 4 until it is positioned in the column memory that you wish to activate and press the rotary selector 4 The activated columns
126. ture is shown Page 34 10 2004 USER S MANUAL PROLINK 4 4C Premium A PROMAX Figure 8 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 9 Video Audio rate measurement In addition to the video 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 4 9 1 3 Measuring the Carrier Noise Ratio C N The PROLINK 4 4C Premium offers two ways to make this measurement 10 2004 Page 35 USER S MANUAL PROLINK 4 4C Premium Auto The PROLINK 4 4C 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 t
127. uence 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 Page 86 10 2004 USER S MANUAL PROLINK 4 4C Premium NESE To define the DiSEqC commands sequence press key ar 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 6 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 31 After the commands sequence is created itis possible to modify it To modify the sequence press key aT repeatedly until you have positioned the cursor on the command you want to make the change and then press the rotary selector 4 Insert function wil
128. 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 be possible to measure the BER When the BER measuring mode is selected the monitor will show a picture like the following Figure 19 BER measuring screen for QPSK modulated signals Two BER measurements are shown 1 BER before FEC Forward Error Corrections 2 BER after Viterbi In a digital reception system for satellite signals after the QPSK decoder two different correction methods are applied see figure 20 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 TUNER Boo VITERBI REED SOLOMON EN Figure 20 Digital reception system via satellite Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 FAX 781 665 0780 TestEquipmentDepot com USER S MANUAL P
129. ut This is the reason because this screen provides the BER measurement before FEC Forward Error Correction and the number of non correctable errors W P Wrong Packets received after Reed Solomon in the measuring time 10 2004 Page 41 USER S MANUAL PROLINK 4 4C Premium BER before FEC Wrong packets QAM TUNER DEMOD REED SOLOMON Figure 14 Digital reception system via cable The BER measurement is provided in scientific notation i e 1 0 E 5 means 1 0x10 that is to say one wrong bit of every 100 000 and through an analogue bar as its length is smaller the signal quality will be better The analogue representation is done on a logarithmic scale 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 before FEC of 2 0E 4 BER 2 0x10 thatis to say two incorrect bits of every 10 000 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 Below the BER analogue bar itis shown the tuned frequency or channel and the frequency deviation in kHz between the tuned frequency and the one which optimizes the BER i e 800 00 MHz 1 2 kHz This deviation must be adjusted by means of tuning the channel again
130. ys the following information Figure 12 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 bandwidth 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 4 11 Channel Bandwidth 4 9 1 5 BER measurement mode selection The PROLINK 4 4C 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 We 3 mode press key utd 21 2 Select the terrestrial band for the measurement of QAM or COFDM modulated signals or the satellite band for the measurement of QPSK modulated signals Available frequency ranges are DVB C QAM signals 47 MHz to 862 MHz DVB T COFDM signals 40 MHz to 862 MHz DVB S QPSK signals 950 MHz to 2150 MHz One JR 3 Select the DIGITAL operating mode by means of the key 20 Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 FAX 781 665 0780 TestEquipmentDepot com USER S MANUAL PROLINK 4 4C Premium 2 4 S

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