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R&S®SMW-K52 DVB-H/T

1. 46 BBIDVBS lu Yap Su Ri a qu E 47 SOURce hw BB DVB WAVeform CREate essen nennen nennen 47 SOURGeshw TBB IDVB DVBHIDVBT DRATG u uuu uu th 47 SOURceshw rBB DVB DVBHIDWBT DUEGUORT u us rau eitis 48 SOURce lt hw gt BB DVB DVBH DVBT SAMPle LENG1Rh 48 SOURCeshiw EBBIDVE IDVBHIDVBT SAMPI amp IRATE iaceo ua 48 ESOURcexshw FBB DVB DVBH DVBT SFRarties ici oua qas 48 SOURce lt hw gt BB DVB PRESet Sets the parameters of the digital standard to their default values RST values speci fied for the commands Not affected is the state set with the command SOURce lt hw gt BB DVB STATe Example SOURce1 BB DVB PRESet Usage Event Manual operation See Set to Default on page 20 SOURce lt hw gt BB DVB SETTing CATalog This command reads out the files with DVB H settings in the default directory The default directory is set using command CDIRectory Only files with the file extension DVB will be listed Return values Catalog string Example MMEM CDIR var user temp DVB sets the default directory to var user temp DVB BB DVB SETT CAT reads out all the files with DVB H settings in the default direc tory Response DVB
2. 68 SOURce lt hw gt BB DVB DVBHI DVBT IlINTerleaver SYMBoI MODE 69 SOURce lt hw gt BB DVB DVBHIDVBT IlINTerleaver SYMBoI TMODe 69 SOURce lt hw gt BB DVB DVBH DVBT lINTerleaver SYMBol STATe 69 SOURc e lt hw gt BB DVB DVBH DVBT OFDM ALPHa uu rer nn rne 69 SOURceshiw BB BVB BVBH DVBT OFDM BWIDlth eroe ren tne 70 SOURcCeshw rBB BDVB IBVBHIDVBT OFDM GINTGtVel ciu a eot artt 70 SOURce shw BB DVB DVBH DVBT OFDM MODulation esee 70 SOURce lt hw gt BB DVB DVBH DVBT HMODe lt HMode gt The command selects either to use one path or both path with different priorization Note In this release only the non hierarchical mode is available Parameters lt HMode gt NHlerarchical HIERarchical NHIErarchical HlErarchical RST NHIErarchical Example BB DVB DVBH HMOD NHI selects the non hierarchical mode to be used Only path one is used that is no priorization is necessary Manual operation See Hierarchy Mode on page 22 n SOURce hw BB DVB DVBH DVBT HP LP DATA Data The command selects the data source to be used Parameters Data PN15 PN23 ZERO Internal 0 is used ONE Internal 1 is use
3. 54 SOURce hw BB DVB TRIGger EXTernal SYNChronize OUTPut 54 5 0 lt gt 5 55 SOURce hw BB DVB TRIGger OBASeband INHibit snan narenn E 59 SOURce hw BB DVB TRIGger OUTPut DELay FlIXed 2 tnnt rnnt 60 SOURce lt hw gt BB DVB TRIGger OUTPut lt ch gt DELay sd SOURce hw BB DVB TRIGger OUTPut ch DELay MAXimum essent 60 SOURce hw BB DVB TRIGger OUTPut ch DELay MINimum essent 61 5 lt gt lt gt 61 SOURceshw BB DVB TRIGger OUTPut ch OFF Time eere eterne nnn SOURce hw BB DVB TRIGger OUTPut ch ONTime correre rnnt nre 5 0 lt gt gt SOURce lt hw gt BB DVB TRIGger OUTPut lt ch gt PULSe DIVider SOURce hw BB DVB TRIGger OUTPut ch PULSe FREQuency seen 63 SOURceshw BB DVB TRIGger RMODe rto tenen 56 ESOURCEshw gt BB DVBAIRIGGEr SL ENG tise ccrcascore caters aoreet PESE tene nr CO eos 56 SOURce hw BB DVB TRIGger SLUNItL rcr tp e tre nee ent
4. 30 Local and Global Connector Settings 31 System Contfiguratiom LLULLU 32 4 7 4 8 4 8 1 4 8 2 5 1 5 1 1 5 1 2 5 1 3 5 1 4 5 1 5 5 1 6 5 2 5 3 I Rlcueee 35 Filter Clipping Settings eene enin teens ennt nennt ce uei 39 Filter Settings redeo nde dod e va 39 Clipping Settings rrr dert dei 41 Remote control 44 General vedas esseesescceeseusieccedexsenses 44 Command S dsrs iasanen n aan iae nennen nnne nnne entente nennen 45 aiaa aa 49 Clipping u aa ayam uywaqa aqa aaa nnns 52 Tugger 53 Marker Settings 59 Clock 5210 a 64 System 65 TPS Settin 70 List of 73 M 75 Documentation Overview 1 Preface 1 1 Documentation Overview The user documentation for the R amp S SMW consists of the following parts Getting Started printed manual
5. sees SOURce hw BB DVB DVBH DVBT OFDM GINTerval essent nennen SOURce lt hw gt BB DVB DVBH DVBT OFDM MODulation SOURce lt hw gt BB DVB DVBH DVBT SAMPle LENGth ua aaa 48 SOURceshw7 BB DVB DVBHI DVBT SAMPle RATE erinnern nas 48 SOURceshw BB DVB DVBHIDVBT SF RAME iran eR xa 48 SOURceshw BB DVB DVBH DVBT TPS ID PAT Tetni iuie ione nt tenen rne 71 SOURceshw BB DVB DVBHIDVBT TPS ID S TATe rrt ttti rt 71 SOURce hw BB DVB DVBH DVBT TPS MFEC STATe 71 SOURce lt hw gt BB DVB DVBH DVBT TPS TSLicing STATe SOURceshw BB DVB DVBH IDVBT FP IBbPEBATA 66 SOURce lt hw gt BB DVB DVBHIDVBT HP LP DATA DSELection 67 SOURce hw BB DVB DVBH DVBT HP LP ICODer RATE essent 67 SOURce hw BB DVB DVBH DVBT HP LP ICODer STATe een 67 SOURce hw BB DVB DVBH DVBT HP LP OCODer STATe eee 68 lt gt 68 SOURce lt hw gt BB DVB DVBH DVBT HP LP PNSCrambler STATe 2268 SOURce lt hw BB DVB F lL TerPARameter APC O25 rri ener trek e o hdi ED HE Ha eR cR sees 49 SOURceshw BB DVB FI
6. 7 Notes on SereenshotS u uu auqa toc cr dba Hr FERE 7 Welcome to the DVB H T Digital Standard 8 Accessing the DVB H T Dialog U u uu nnne 8 SCODB ioi ore ERE NEA s a 9 About this Digital 10 Modulation System 10 pseudo Noise 5 uu uu u u n addens 10 EE 11 Outer IMten Cav Of uu sn Za sn sn an 11 ss SSS sss 11 Inner Interle aver ceci u u reta uite 12 Milo EE 13 Frame 13 Transport Parameter Signalling LLL L L uuu E 14 Extensions to Aa aaa isa ERE ERAT 15 Mode and In Depth 15 em 16 Forward Error Correction for Multiprotocol Encapsulated Data 18 DVB Configuration and 20 General Settings iie trecenta tor Ya sa ia Ra Du aa scores 20 I IdJedunupnlemee 23 Marker E 28 Clock Settings sisi cise
7. 61 SOURce hw BB DVB TRIGger OUTPut ch MODE sse 61 SOURceshw BB DVB TRIGger OUTPut ch OFFTime u u uu s ritu atn 62 SOURce lt hw gt BB DVB TRIGger OUTPut lt ch gt ONTime 62 SOURce lt hw gt BB DVB TRIGger OUTPut lt ch gt PATTern 62 SOURce lt hw gt BB DVB TRIGger OUTPut lt ch gt PULSe DIVider 63 5 lt gt 0 lt gt 63 General Commands SOURce lt hw gt BB DVB TRIGger OUTPut DELay FIXed Fixed The command restricts the marker delay setting range to the current range In this range the delay can be set without restarting the marker and signal If a delay is entered in setting ON but is outside this range the maximum possible delay is set and an error message is generated Parameters lt Fixed gt 0 1 OFF RST OFF Example BB DVB TRIG OUTP DEL FIX ON restricts the marker signal delay setting range to the current range Manual operation See Marker x Delay on page 30 SOURce lt hw gt BB DVB TRIGger OUTPut lt ch gt DELay Delay The command defines the delay between the signal on the marker outputs and the start of the signal expressed in terms of samples Command BB DVB TRIGger OUTPut DELay FIXed can be used to r
8. Clipping Mode Selects the clipping method A graphic illustration of the way in which these two meth ods work is given in the dialog Vector i The limit is related to the amplitude i q The and Q components are mapped together the angle is retained e Scalar i q The limit is related to the absolute maximum of all the and Q values q The and Q components are mapped separately the angle changes Remote command SOURce lt hw gt BB DVB CLI Pping MODE on page 53 General Commands 5 Remote control commands The following commands are required to perform signal generation with the DVB options in a remote environment We assume that the R amp S SMW has already been set up for remote operation in a network as described in the R amp S SMW documentation A knowledge about the remote control operation and the SCPI command syntax are assumed o Conventions used in SCPI command descriptions For a description of the conventions used in the remote command descriptions see section Remote Control Commands in the R amp S SMW user manual The commands in the SOURce BB DVB subsystem are described in three sections separated into general remote commands commands for system configuration and TPS settings Common Suffixes The following common suffixes are used in remote commands Suffix Value range Description ENTity lt ch gt 1 4 entity in a multiple e
9. BB DVB DVBH DVBT OFDM BWIDth on page 70 OFDM RF Modulation Selects the constellation for the OFDM modulation For details refer to chapter 3 1 6 Mapper on page 13 Remote command SOURce lt hw gt BB DVB DVBH OFDM MODulation on page 70 OFDM RF Alpha Selects the alpha value This value is used to shape the constellation of the modula tion For non hierarchical mode this value is always 1 an can not be changed For details refer to chapter 3 1 6 Mapper page 13 Note The values in the list are selectable only if Hierarchical is selected in the Hier archy Mode field and a modulation type other than QPSK is selected In this release only the Non hierarchical mode is available Remote command SOURce lt hw gt BB DVB DVBH DVBT OFDM ALPHa on page 69 OFDM RF Guard Int Selects the value for the guard interval The guard interval extends the length of the transmitted symbol The guard intervals are given as fractions of a symbol period Remote command SOURce lt hw gt BB DVB DVBH DVBT OFDM GINTerval page 70 TPS Settings 4 7 TPS Settings access this dialog select Baseband gt DVB gt TPS Cell Identification ID 4 hex Time Slicing MPE FEC This dialog allows to select the bits to transmit via the TPS signal and displays the status of the parameter bits Cell Identification Activ
10. mand BB DVB CLIPping MODE Parameters State Example Manual operation Trigger Settings 0 1 OFF ON RST OFF BB DVB CLIP STAT ON activates level clipping See Clipping State on page 42 This section lists the remote control commands necessary to configure the trigger General Commands SOURce hw BB DVB TRIGger ARM EXEQCUte u L LL einen enhn nannte asas 54 ESOURce hw TE BB DVB TRIGger EXEGute inito asss n ero ne SER aie 54 SOURce lt hw gt BB DVB TRIGger EXTernal SYNChronize OUTPult 54 SOURce lt hw gt BB DVB TRIGger OBASeband DELay 55 SOURc lt hw gt BB DVB TRIGger OBASeband INHIIBIU u u uuu eee ens 55 8 lt gt 56 SOURce hw BB DVB TRIGger SLUNIt eese nennen 56 SOURcexhw EBB DVE TRIGger SLENglh 2 2 1 56 ESOURce hw EFBBIDVB ITRIGger SOURRG retener 57 SOURce lt hw gt BB DVB TRIGger EXTernal DELay 58 SOURce hw BB DVB TRIGger EX Terna 1 sini Lea iu oto te etin 58 ESOURce hw FBB DVB TRIGger SEQuentce 2 a irre 58 SOURce hw BB DVB TRIGger ARM EXECute The command s
11. Online Help system on the instrument incl Tutorials Documentation CD ROM with Getting Started Online help system Web Help and chm as a standalone help User Manuals for base unit and options Service manual Data sheet and product brochure Links to useful sites on the Rohde amp Schwarz internet Online Help The Online Help is embedded in the software It offers quick context sensitive access to the complete information needed for operation and programming The online help contains help on operating the R amp S SMW and all available options Getting Started The Getting Started is delivered with the instrument in printed form and in PDF format on the documentation CD It provides the information needed to set up and start work ing with the instrument Basic operations and typical signal generation examples are described Safety information is also included This manual is available in several languages You can download these documents from the Rohde amp Schwarz website on the R amp S SMW product page at http www rohde schwarz com product SMW200A html gt Downloads gt Manuals User Manual User manuals are provided for the base unit and each additional software option The User Manual for the base unit is a supplement to the Getting Started manual and provides basic information on operating the R amp S SMW in general In this manual all instrument functions are described in detail Further
12. CLOCk MODE on page 64 Clock Multiplier Enters the multiplication factor for clock type Multiple Remote command SOURce lt hw gt BB DVB CLOCk MULTiplier page 64 Measured External Clock Provided for permanent monitoring of the enabled and externally supplied clock signal Remote command CLOCk INPut FREQuency Local and Global Connector Settings Each of the Trigger In Marker and Clock dialogs as well as the Trigger Marker Clock dialog provides a quick access to the related local and global connector set tings System Configuration For more information refer to the description R amp S SMW User Manual section Local and Global Connectors 4 6 System Configuration To access this dialog select Baseband gt DVB gt System This dialog comprises the settings to configure the DVB system The DVB system is displayed in form of a block diagram including all parameters necessary to con figure the system HP LP Source Selects the data source LP is provided in hierarchical mode see Hierarchy Mode Remote command SOURce hw BB DVB DVBH DVBT HP LP DATA on page 66 SOURce hw BB DVB DVBH DVBT LP DATA DSELection page 67 PN Scrambler Activates deactivates the PN scrambling The data packets of the incoming transport stream are transformed to a Pseudo Random Binary Sequence PRBS in order to obtain a bit sequence th
13. Clipping Settings on page 39 Trigger Settings This dialog provides access to the settings necessary to select and configure the trig ger like trigger source mode trigger delay trigger suppression as well as to arm or trigger an internal trigger manually The current signal generation status is displayed in the header of the dialog together with information on the enabled trigger mode As in the Marker and Clock dialogs this dialog provides also an access to the settings of the related connectors This section focuses on the available settings For information on how these settings affect the signal refer to section Basics on in the R amp S SMW user manual gt access this dialog select Baseband gt DVB gt Trigger In This dialog comprises the settings required for configuring the trigger signal R amp S SMW K52 DVB Configuration and Settings Routing and Enabling a Trigger The provided trigger signals are not dedicated to a particular connector but can be mapped to one or more globally shared USER or local T M C connectors Use the Local and Global Connector Settings to configure the signal mapping as well as the polarity the trigger threshold and the input impedance of the input connectors To route and enable a trigger signal perform the following general steps Define the signal source and the effect of a trigger event i e select the Trigger In gt Mode
14. HP Source PN 23 Filter Type Cosine Clipping OFF Trigger Mode Auto Cell Identification ON Time Slicing ON ID 4 hex 0000 MPE FEC OFF PN Scrambler ON Outer Coder ON Outer Interleaver ON Inner Coder ON Rate v Inner Bit Interleaver ON Inner Symbol Interleaver ON Inner Interleaver Mode Native TX Mode 2K OFDM RF Bandwidth 8 MHz Modulation QPSK Alpha 1 Guard Interval 1 8 Remote command SOURce hw BB Save Recall DVB PRESet on page 45 Accesses the Save Recall dialog i e the standard instrument function for storing and recalling the complete dialog related settings in a file The provided navigation possibil ities in the dialog are self explanatory The file name and the directory it is stored in are user definable the file extension is however predefined General Settings See also chapter File and Data Management in the R amp S SMW User Manual Remote command SOURce lt hw gt BB DVB SETTing CATalog on page 45 SOURce lt hw gt BB DVB SETTing LOAD On page 46 SOURce lt hw gt BB DVB SETTing STORe on page 46 SOURce lt hw gt BB DVB SETTing DELete on page 46 Generate Waveform File With enabled signal generation triggers the instrument to store the current settings as an ARB signal in a waveform file Waveform files can be further processed by the ARB and or as a multi carrier or a multi segment signal The file name and the d
15. SOURce lt hw gt BB DVB DVBR DVEBT TPS IDIPATTeph u L eese 71 SOURee lt hw gt BB DVB DVBHIDVBTIIPS IID ISTATe uuu ink 71 SOURce lt hw gt BB DVB DVBH DVBT TPS MFEC STATe 71 SOURce lt hw gt BB DVB DVBH DVBT TPS TSLicing STATe 71 SOURce lt hw gt BB DVB DVBH DVBT TPS ID PATTern Pattern The command sets the pattern for cell identification Parameters Pattern integer Range 0000 to FFFF RST 0000 Example BB DVB DVBH TPS ID PATT 0000 sets the cell identification to 0000 Manual operation See ID 4 hex on page 36 SOURce lt hw gt BB DVB DVBH DVBT TPS ID STATe State The command activates deactivates the TPS cell identification Parameters State 0 1 ON RST ON Example BB DVB DVBH TPS ID STAT ON activates the TPS cell identification Manual operation See Cell Identification on page 35 SOURce lt hw gt BB DVB DVBH DVBT TPS MFEC STATe State The command activates deactivates the multiprotocol encapsulation forward error cor rection bit Parameters State 0 1 OFF RST ON Example BB DVB DVBH TPS MFEC STAT ON activates the multiprotocol encapsulation forward error correc tion bit Manual operation See MPE FEC on page 36 SOURce hw BB DVB DVBH DVBT TPS TSLicing STATe Queries the time slicing
16. and Trigger In gt Source Define the connector USER or T M C the selected signal is provided at i e con figure the Local and Global Connector Settings Trigger Settings Common to All Basebands To enable simultaneous signal generation in all basebands the R amp S SMW couples the trigger settings in the available basebands in any instrument s configuration involving signal routing with signal addition e g MIMO configuration routing and summing of basebands and or streams The icon indicates that common trigger settings are applied You can access and configure the common trigger source and trigger mode settings in any of the basebands An arm or a restart trigger event applies to all basebands too You can still apply different delay to each of the triggers individually Trigger Mode Trigger Settings Common to All Basebands Selects trigger mode i e determines the effect of a trigger event on the signal genera tion For more information refer to chapter Basics in the R amp S SMW user manual e Auto The signal is generated continuously e Retrigger The signal is generated continuously A trigger event internal or external causes a restart e Armed Auto The signal is generated only when a trigger event occurs Then the signal is gener ated continuously An Arm stops the signal generation A subsequent trigger event internal with or external causes a restart Armed Retrigger The signal is
17. path can also be specified in which case the files in the specified directory are read Only the file name has to be entered DVB H settings are stored as files with the specific file extensions DVB Setting parameters Filename string Example BB DVB SETT STOR DVB 1 stores the current DVB H settings into file DvB 1 Usage Setting only Manual operation See Save Recall on page 21 SOURce lt hw gt BB DVB STANdard Standard The command selects the DVB standard to be used General Commands Note In this release only DVB H is available Parameters lt Standard gt DVBH DVBT RST DVBH Example BB DVB STAN DVBH selects the DVB H standard to be used Manual operation See DVB Standard on page 22 SOURce lt hw gt BB DVB STATe State Activates the standard and deactivates all the other digital standards and digital modu lation modes in the same path Parameters State 0 1 OFF RST 0 Example SOURcel BB DVB STATe ON Manual operation See State on page 20 SOURce lt hw gt BB DVB WAVeform CREate Filename This command creates a waveform using the current settings of the DVB H menu The file name is entered with the command The file is stored with the predefined file extension wv The file name and the directory it is stored in are user definable Setting parameters Filename string Example MMEM CDIR var user t
18. DVB DVBH DVBT OFDM ALPHa Alpha The command selects the a value This value is used to shape the constellation of the modulation For DVB H this value is always 1 Parameters Alpha 11214 RST 1 TPS Settings Example BB DVB DVBH OFDM ALPH 1 sets the a value to 1 Manual operation See OFDM RF Alpha on page 34 SOURce lt hw gt BB DVB DVBH DVBT OFDM BWIDth lt BWidth gt The command selects the system bandwith Parameters lt BWidth gt 5 6 7 8 RST 8 MHz Example BB DVB DVBH OFDM BWID 8 sets the OFDM bandwith to 8 MHz Manual operation See OFDM RF Bandwidth on page 34 SOURce lt hw gt BB DVB DVBH DVBT OFDM GINTerval lt Ginterval gt The command selects the OFDM RF guard interval Parameters lt GInterval gt 61104 GI1D8 GI1D16 GI1D32 RST GI1D8 Example BB DVB DVBH OFDM GINT 61108 sets the OFDM guard interval to 1 8 of the symbol period Manual operation See OFDM RF Guard Int on page 34 SOURce lt hw gt BB DVB DVBH DVBT OFDM MODulation Modulation The command selects the constellation for the OFDM modulation Parameters Modulation QPSK QAM16 QAM64 RST QPSK Example BB DVB DVBH OFDM MOD QAM16 selects 16 QAM as the constellation for the OFDM modulation Manual operation See OFDM RF Modulation page 34 5 3 TPS Settings This subsystem contains commands regarding the TPS settings of the DVB signal TPS Settings
19. Hare To ipm Q 56 s Sample Rate cincti ne cider ce rei ag p perte aqya Sample Rate DVB H Sample Rate Variation 5 Sample Rate Variation DVB H 52 Save Recall 222 21 Service manual 2 210 Selo default ten dte iieri d 20 Signal duration nlt nre 25 Signal generation 518 5 iine cim etes 25 KI rp E 24 Standard IDV BAA Beretta Lens 46 66 Standard SettiligS x uuu u eerie cete 20 State c nr rrr eter ntes 53 Sync output to external trigger 26 T Time Slicing isi sauna nara TPS Parameter Bits TPS Table Trigger delay inermem res Trigger mode uu rrr netter eret Trigger Mode Trigger signal duration 35 Trigger SOURCE re yaaa tbe ipa 25 Trigger Source sf MMO ANS os cee ayapa ha 6 U BER E RE 5 w Waveform file 22 Web Help
20. current status of signal generation for all trigger modes with DVB H modulation on Return values lt RMode gt STOP RUN RUN the signal is generated A trigger event occurred in the triggered mode STOP the signal is not generated A trigger event did not occur in the triggered modes or signal generation was stopped by the com mand BB DVB TRIG ARM EXECute armed trigger modes only Example BB DVB TRIG SOUR EXT sets external triggering B DVB TRIG MODE ARET elects the Armed Retrigger mode B DVB TRIG RMOD ueries the current status of signal generation esponse UN the signal is generated an external trigger was executed o 20 Usage Query only Manual operation See Running Stopped on page 25 SOURce lt hw gt BB DVB TRIGger SLUNit lt SLunit gt Defines the unit for the entry of the length of the signal sequence to be output in the Single trigger mode Parameters lt SLunit gt FRAMe SEQuence RST SEQuence Example BB DVB TRIG SLUN SEQ Manual operation See Signal Duration Unit on page 25 SOURce lt hw gt BB DVB TRIGger SLENgth lt SLength gt Sets the length of the signal sequence to be output in the Single trigger mode SOUR BB DVB SEQ SING General Commands The unit is defined with command SOUR BB DVB TRIG SLUNit It is then possible to output deliberately just part of the frame an exact sequence
21. generated only when a trigger event occurs Then the signal is gener ated continuously Every subsequent trigger event causes a restart An Arm stops signal generation A subsequent trigger event internal with or external causes a restart e Single The signal is generated only when a trigger event occurs Then the signal is gener ated once to the length specified at Signal Duration Every subsequent trigger event internal or external causes a restart Remote command SOURce lt hw gt BB DVB TRIGger SEQuence page 58 User Manual 1175 6778 02 07 24 Trigger Settings Signal Duration Unit Trigger Settings Common to All Basebands Defines the unit for describing the length of the signal sequence to be output in the Single trigger mode Remote command SOURce lt hw gt BB DVB TRIGger SLUNit on page 56 Trigger Signal Duration Trigger Settings Common to All Basebands Enters the length of the signal sequence to be output in the Single trigger mode Use this parameter to deliberately output part of the signal an exact sequence of the signal or a defined number of repetitions of the signal Remote command SOURce lt hw gt DVB TRIGger SLENgth on 56 Running Stopped Trigger Settings Common to All Basebands For enabled modulation displays the status of signal generation for all trigger modes e Running The signal is generated a trigger was internally or externally
22. initiated in triggered mode e Stopped The signal is not generated and the instrument waits for a trigger event Remote command SOURce lt hw gt BB DVB TRIGger RMODe 56 Arm lt Trigger Settings Common to All Basebands Stops the signal generation until subsequent trigger event occurs Remote command SOURce lt hw gt BB DVB TRIGger ARM EXECute on page 54 Execute Trigger Trigger Settings Common to All Basebands For internal trigger source executes trigger manually Remote command SOURce lt hw gt DVB TRIGger EXECute on page 54 Trigger Source Trigger Settings Common to All Basebands The following sources of the trigger signal are available e Internal The trigger event is executed manually by the Execute Trigger e Internal Baseband A B The trigger event is provided by the trigger signal from the other basebands If common trigger settings are applied this trigger source is disabled e External Global Trigger 1 2 The trigger event is the active edge of an external trigger signal provided and con figured at the global USER connectors External Global Clock 1 2 The trigger event is the active edge of an external global clock signal provided and configured at the global USER connectors External Local Trigger Trigger Settings The trigger event is the active edge of an external trigger signal provided and con figured at t
23. of the frame or a defined number of repetitions of the frame Parameters lt SLength gt Example Manual operation integer Range 1 to 7000 RST 4 BB DVB SEQ SING sets trigger mode Single BB DVB TRIG SLUN FRAM sets unit frames for the entry of sequence length BB DVB TRIG SLEN 200 sets a sequence length of 200 frames The current frame will be output 200 times after the next trigger event See Trigger Signal Duration on page 25 SOURce lt hw gt BB DVB TRIGger SOURce Source Selects the trigger signal source and determines the way the triggering is executed Provided are internal triggering by means of a command external trigger singnal via one of the provided local or global connectors and and triggering by a signal from the other paths Parameters lt Source gt INTB INTernal OBASeband EGT1 EGT2 EGC1 EGC2 ELTRigger INTA ELCLock BEXTernal EXTernal INTernal Internal INTA INTB Internal trigger from the other baseband EGT1 EGT2 External global trigger EGC1 EGC2 External global clock ELTRigger External local trigger ELCLock External local clock OBASeband BEXTernal EXTernal Provided only for backward compatibility with other R amp S signal generators The R amp S SMW accepts these values und maps them automati cally as follow EXTernal EGT1 BEXTernal EGT2 OBASeband INTA or INTB depending on the current baseband RST INTern
24. output signal is syn chronous to the trigger event OFF The signal output begins after elapsing of the processing time and starts with sample 0 i e the complete signal is outputted This mode is recommended for triggering of short signal sequen ces with signal duration comparable with the processing time of the instrument RST ON BB DVB TRIG SOUR EXT sets external triggering BB DVB TRIG EXT SYNC OUTP ON enables synchrounous output to external trigger See Sync Output to External Trigger on page 26 SOURce lt hw gt BB DVB TRIGger 0BASeband DELay Delay Specifies the trigger delay expressed as a number of samples for triggering by the trigger signal from the second path Parameters Delay Example Manual operation float Range 0 to 16777215 Increment 0 01 RST 0 BB DVB TRIG SOUR OBAS BB DVB TRIG OBAS DEL 50 See Trigger Delay on page 27 SOURce hw BB DVB TRIGger OBASeband INHibit lt Inhibit gt Specifies the number of samples by which a restart is to be inhibited following a trigger event This command applies only for triggering by the second path Parameters lt Inhibit gt integer Range 0 to 67108863 RST 0 Default unit samples General Commands Example BB DVB TRIG SOUR OBAS BB DVB TRIG INH 200 Manual operation See External Trigger Inhibit on page 27 SOURce lt hw gt BB DVB TRIGger RMODe The command queries the
25. parameter bits TPS Settings Table 4 1 TPS signaling information transmitted in DVB H Bit number Format Purpose 0 0 1 Initialization bit for the differential 2 PSK modulation The modulation of the TPS initialization bit is derived from the PRBS sequence 1 16 Bits 1 to 16 of the TPS are the synchronization words for the TPS blocks in the super frames 0011010111101110 Synchronization word for the first and the third TPS block in each super frame 17 22 11001010000100001 Synchronization word for the second and the fourth TPS block in each super frame The first 6 bits of the TPS information is used as a TPS length indicator to signal the number of used bits of the TPS 010111 Cell Identification is not transmitted 23 TPS bits in use 011111 Cell Identification information is transmitted 31 TPS bits in use 100001 Cell Identification information is transmitted for DVB H 33 TPS bits in use 23 24 Indicates the frame in the super frame Four frames constitute a super frame 00 Frame 1 in the super frame 01 Frame 2 in the super frame 10 Frame 3 in the super frame 11 Frame 4 in the super frame 25 26 Indicates the constellation 00 QPSK 01 10 16 QAM 64 11 Reserved 27 Indicates the interleaver mode The in depth interlea ver can be used for 2K and 4K transmission mode
26. state TPS Settings Return values State 0 1 OFF ON always 1 for DVB H always 0 for DVB T Usage Query only Manual operation See Time Slicing on page 36 List of Commands ESOURce hw gt l BB DVB CLIPpingLEVel u u u u u Des 52 SOURceshw T BB DVB ELbIPping MODE uio ciatis ea 53 SOURceshw BB DVB CLIPping S lATe inerat hne enhn nnn riri nri n 53 5 lt otii rrr treten 64 SOURce lt hw gt BB DVB CLOCK MULTIplIBE ssh ue eo 64 SOURce lt hw gt BB DVB CLOCk SOURce SOURceshw BB DVB DVBH IDVBT DRATe 3 itor t rrt theres te pn trt eene rne gas 47 SOURceshw BB DVB DVBHIDVBT DURAtiOri iiri e ene ttti Ene 48 SOURceshw 5 BB DVB DVBH DVBT HMOBe nete entr rh rn errat cnn 66 ESOURce lt hw gt BB DVB DVBHIDVBT IINTerleaver BIT STATe ia enn 68 LSOURce lt hw gt BB DVB DVBHI DVBT lINTerleaver SYMBol MODE 69 0 69 SOURce hw BB DVB DVBH DVBT IINTerleaver SYMBol STATe eee 69 SOURceshw BB DVB DVBHIDVBT OFDM ALEPFI SOURce hw BB DVB DVBH DVBT OFDM BWIDth
27. 1 DVB 2 the files DVB 1 and DVB 2 are available Usage Query only Manual operation See Save Recall on page 21 General Commands SOURce lt hw gt BB DVB SETTing DELete Filename This command deletes the selected file with DVB H settings The directory is set using command MMEM CDIRectory path can also be specified in which case the files in the specified directory are read The file extension may be omitted Only files with the file extension DVB will be deleted Setting parameters lt Filename gt string Example BB DVB SETT DEL var user temp DVB deletes the specified file with DVB H settings Usage Setting only Manual operation See Save Recall on page 21 SOURce lt hw gt BB DVB SETTing LOAD Filename This command loads the selected file with DVB H settings The directory is set using command CDIRectory path can also be specified in which case the files in the specified directory are read The file extension may be omitted Only files with the file extension DVB will be loaded Setting parameters Filename string Example BB DVB SETT LOAD DVB 1 loads file DvB 1 Usage Setting only Manual operation See Save Recall on page 21 SOURce hw BB DVB SETTing STORe Filename This command stores the current DVB H settings into the selected file The directory is set using command CDIRectory
28. 1D2 Manual operation See Rate on page 33 SOURce hw BB DVB DVBH DVBT HP LP ICODer STATe State The command activates deactivates the inner coder Parameters State 0 1 OFF RST 1 Example BB DVB DVBH HP ICOD ON activates the inner coder Manual operation See Inner Coder on page 33 System Configuration SOURce lt hw gt BB DVB DVBH DVBT HP LP OCODer STATe State The command activates deactivates the outer coder RS Parameters lt State gt 0 1 OFF RST ON Example BB DVB DVBH HP OCOD STAT ON activates the outer coder Manual operation See Outer Coder RS on page 33 SOURce lt hw gt BB DVB DVBH DVBT HP LP OINTerleaver STATe State The command activates deactivates the outer interleaver Parameters State 0 1 OFF RST 1 Example BB DVB DVBH HP OINT ON activates the outer interleaver Manual operation See Outer Interleaver on page 33 SOURce hw BB DVB DVBH DVBT HP LP PNSCrambler STATe State The command activates deactivates the PN scrambler Parameters State 0 1 OFF RST ON Example BB DVB DVBH HP PNSC ON activates the PN scrambling that is transforming the data pack ets of the incoming transport stream to a Pseudo Random Binary Sequence PRBS Manual operation See PN Scrambler on page 32 SOURce lt hw gt BB DVB DVBH DVBT IINTerleaver BIT STATe State The command a
29. A converter is relative to the maximum value the average value is converted with a relatively low resolution This results in a high quantiza tion noise Both effects increase the adjacent channel power Since clipping the signal not only changes the peak value but also the average value the effect on the crest factor is unpredictable The following pictures demonstrate the affect of clipping with vector mode i jq using the default signal configuration with a PN23 input sequence R amp S SMW K52 DVB Configuration and Settings Fig 4 1 Constellation diagram of the signal without clipping shows the level mapping Fig 4 2 Constellation diagram with clipping level 10 vector mode i jq Provided are the following settings Clipping State Switches baseband clipping on and off Baseband clipping is a very simple and effective way of reducing the crest factor of the signal Since clipping is done prior to filtering the procedure does not influence the spectrum The EVM however increases Remote command SOURce lt hw gt BB DVB CLIPping STATe On page 53 Clipping Level Sets the limit for clipping User Manual 1175 6778 02 07 42 Filter Clipping Settings This value indicates at what point the signal is clipped It is specified as a percentage relative to the highest level 100 indicates that clipping does not take place Remote command SOURce lt hw gt BB DVB CLIPping LEVel on page 52
30. APCO25 lt 25 gt The command sets the roll off factor for filter type APCO25 Parameters Apco25 float Range 0 05 to 0 99 Increment 0 01 RST 0 20 Example BB DVB FILT PAR APCC25 0 2 sets the roll off factor to 0 2 for filter type APCO25 Manual operation See Roll Off Factor or BxT on page 40 SOURce lt hw gt BB DVB FILTer PARameter COSine lt Cosine gt The command sets the roll off factor for the Cosine filter type Parameters lt gt float Range 0 to 1 0 Increment 0 01 RST 0 10 Example BB DVB FILT PAR COS 0 35 sets the roll off factor to 0 35 for filter type Cosine Manual operation See Roll Off Factor or BxT on page 40 General Commands SOURce lt hw gt BB DVB FILTer PARameter COSine COFS lt Cofs gt The command sets the cut off frequency shift value for the Cosine filter type Parameters lt Cofs gt float Range 1 to 1 Increment 0 01 RST 0 1 Example BB DVB FILT PAR COS COFS 0 35 sets the cut off frequency shift value to 0 35 Manual operation See Cut Off Frequency Shift on page 40 SOURce lt hw gt BB DVB FILTer PARameter GAUSs Gauss The command sets the B x T for the Gauss filter type Parameters lt Gauss gt float Range 0 15 to 2 5 Increment 0 01 RST 0 5 Example BB DVB FILT PAR GAUS 0 5 sets B x T to 0 5 for the Gauss filter type Manual operation See Roll Off Factor or BxT on p
31. B CLIPping LEVel sessi eene nennen nnne nan 52 E SOURceshw EB DVR CUPPING MODE UU UU uu dao ceterae ene 53 ESOURceshw EBB DVB CLIPping STAToe 2 212 2 Licet rette 53 SOURce hw BB DVB CLIPping LEVel Level The command sets the limit for level clipping This value indicates at what point the sig nal is clipped It is specified as a percentage relative to the highest level 100 indi cates that clipping does not take place Parameters lt Level gt Example Manual operation General Commands integer Range 1 PCT to 100 PCT Increment 1 PCT RST 100 BB DVB CLIP LEV 80 sets the limit for level clipping to 8096 of the maximum level BB DVB CLIP STAT ON activates level clipping See Clipping Level on page 42 SOURce hw BB DVB CLIPping MODE Mode The command sets the method for level clipping Parameters Mode Example Manual operation VECTor SCALar VECTor The reference level is the amplitude i jq SCALar The reference level is the absolute maximum of the and Q val ues RST VECTor BB DVB CLIP MODE VECT sets the amplitude as reference level See Clipping Mode on page 43 SOURce lt hw gt BB DVB CLIPping STATe State The command activates level clipping The value is defined with the com mand BB DVB CLIPping LEVel the mode of calculation with the com
32. B DVBH DVBT SFRames lt SFrames gt The command sets the number of super frames to be transmitted Parameters lt SFrames gt integer Range 1 to 100 RST 1 General Commands Example BB DVB DVBH SFR 50 sets the number of the transmitted super frames to 50 Manual operation See Number of Super Frames on page 22 5 1 2 Filter Settings SOURce hw BB DVB FILTer PARameter APCOJ25 esses 49 SOURce hw BB DVB FILTer PARameter COSine essen 49 SOURce lt hw gt BB DVB FILTer PARameter COSine COFS 50 SOURce lt hw gt BB DVB FILTer PARameter GAUSs 50 85 lt gt 5 50 P SOURce lt hw gt J J BB DVB FILTer PARameler LPASSEVM eee eite nin nen nana inn 50 SOURce lt hw gt BB DVB FILTer PARameter PGAuss nnne 51 SOURce lt hw gt BB DVB FILTer PARameter RCOSine 51 SOURce lt hw gt BB DVB FILTer PARameter SPHase 51 PSOURcesbw gt BB DVBILTeETYPE L RL 52 SOURce lt hw gt BB DVB SRATe VARIiation 52 m SOURce lt hw gt BB DVB FILTer PARameter
33. Basics on in the R amp S SMW user manual gt access this dialog select Baseband gt DVB gt Clock This dialog comprises the settings required for configuring the clock signal Local and Global Connector Settings Defining the Clock The provided clock signals are not dedicated to a particular connector but can be map ped to one or more globally shared USER and the two local T M C connectors Use the Local and Global Connector Settings to configure the signal mapping as well as the polarity the trigger threshold and the input impedance of the input connectors To route and enable a trigger signal perform the following general steps e Define the signal source i e select the Clock gt Source Define the connector USER or T M C the selected signal is provided at i e con figure the Local and Global Connector Settings 4 5 Clock Source Selects the clock source Internal The instrument uses its internal clock reference e External Global Clock 1 2 The instrument expects an external clock reference at the global USER connector as configured in the Global Connector Settings dialog e External Local Clock The instrument expects an external clock reference at the local T M C connector Remote command SOURce hw BB DVB CLOCk SOURce on 65 Clock Mode Enters the type of externally supplied clock Remote command SOURce hw BB
34. D SCDMA GSM EDGE and DVB H or DVB T using only one signal gen erator simple creation of standard compliant DVB H or DVB T signals This user manual contains a description of the functionality that the application pro vides including remote control operation All functions not discussed in this manual are the same as in the base unit and are described in the R amp S SMW user manual The latest version is available for download at the product homepage Installation You can find detailed installation instructions in the delivery of the option or in the R amp S SMW Service Manual Accessing the DVB H T Dialog To open the dialog with DVB H T settings gt In the block diagram of the R amp S SMW select Baseband gt DVB A dialog box opens that displays the provided general settings The signal generation is not started immediately To start signal generation with the default settings select State gt On Scope 2 2 Scope Tasks in manual or remote operation that are also performed in the base unit in the same way are not described here In particular this includes e Managing settings and data lists i e storing and loading settings creating and accessing data lists accessing files in a particular directory etc Information on regular trigger marker and clock signals as well as filter settings if appropriate General instrument configuration such as checking the system configuration con figurin
35. DVB H reduces the average power consumption of the receiving handheld terminals and enables smooth and seamless service hand over IP datagramms are transmitted as data bursts in small time slots using a significantly higher instantaneous bit rate compared to traditional streaming bit rates During the off times between the bursts the receiving handheld is inactive and therefore using less power Extensions to DVB T Fig 3 5 DVB H Time Slicing The point of time when the next burst is transmitted delta_t is indicated within the burst currently being received MAC_address_4 MAC_address_3 MAC_address_2 MAC_address_1 Fig 3 6 Next Burst Indication Time slicing enables a handheld receiver to stay active only for a fraction of time that is when the burst is transmitted Note that while the receiver is inactive between the bursts the transmission stream is constantly on that is the transmission stream is never interrupted Between the off times of a particular service other services are transmitted in bursts in a sequence 3 2 3 Extensions to DVB T In addition time slicing allows to use the receiver to monitor neighbouring cells during the off times Performing the cell switching during an off time enables a smooth and seamless service handover Time slicing is mandatory for DVB H Forward Error Correction for Multiprotocol Encapsulated Data MPE FEC The MPE FEC module provided with DVB H impove
36. ETer PARameter COSire rone tn tnit etre eniro rh ran 49 SOURce hw BB DVB FILTer PARameter COSine COFS 50 SOURceshw BB DVB FIETer PARAameter GAUSS blu 50 SOURceshw BB DVB FIETer PARameter E PASS onore eer entretenir 50 SOURce hw BB DVB FILTer PARameter LPASSEVM 50 SOURceshw BB DVB FILTer PARameter PGAUss iocari e ea a usakama sasawa casa aska 51 SOURce shw BB DVB FILTer PARameter RCOS ne 51 SOURceshw BB DVB FILTer PARameterSPHase eerte tret netter 51 YI PE t icon e ehe Rr e ee E 52 SOURce lt hw gt BB DVB PRESet SOURce lt hw gt BB DVB SET Ting CATalog e retta terror eraot eere tradat 45 SOURceshw TBB DVB SETTing DEIL te tt ie cox rp a 46 SOURceshw BB DVB SETTing EOAD rrt terre nen ht 46 SOURce lt hw gt BB DVB ISETTING S TORSG uu etre ther tentent ngon rh P Ee dena ced 46 SOURceshw z BB IDVB SRATe VARIAlOLD ctc tee Ebo t ets ee be ERE RR 52 SOURCE shw gt BB DVBiS TAN CaN C 46 lt gt 5 rtr neret er 47 SOURceshw BB DVB TRIGger ARM EXEQGUte 2 rrr et terrere rnit 54 SOURceshwsEBB DVBI RIGger E XEGNUL
37. For transmission mode 8K only the native interleaver shall be used The native interleaver is used The in depth interleaver is used 28 29 Indicates the hierarchical transmission and the value of the Alpha factor 00 Transmission in non hierarchical mode 01 Alpha 1 TPS Settings Bit number Format Purpose 10 Alpha 2 11 Alpha 4 30 32 Indicates the code rate for the HP transmission stream 000 001 2 3 010 3 4 011 5 6 100 7 8 101 reserved 110 reserved 111 reserved 33 35 Indicates the code rate for the LP transmission stream 000 001 2 3 010 3 4 011 5 6 100 7 8 101 reserved 110 reserved 111 reserved 36 37 Indicates the value for the guard interval 00 1 32 01 1 16 10 1 8 11 1 4 38 39 Indicates the transmission mode 00 2K mode 01 8K mode 10 4K mode 11 reserved 40 47 Cell id 32 bits are used for the cell ID Every frame contains eight bits The eight bits are used to identify the cell from which the signal comes from 48 Indicates the usage of time slicing Filter Clipping Settings Bit number Format Purpose 0 Time slicing is not used 1 At least one elementary stream uses time slicing 49 Indicates the usage of MPE FEC 0 MPE FEC is not used 1 At least one elementary stream uses MPE FEC 50 53 reserved 54 67 XXXXXXXXXXXXXXXX BCH E
38. R amp S9SMW K52 DVB H T User Manual II 1175 6778 02 07 5 e eG 2 o o This document describes the following software options R amp S SMW K52 1413 6090 xx This manual describes firmware version FW 3 20 324 xx and later of the R amp S SMW200A 2015 Rohde amp Schwarz GmbH amp Co KG M hldorfstr 15 81671 M nchen Germany Phone 49 89 41 29 0 Fax 49 89 41 29 12 164 Email info rohde schwarz com Internet www rohde schwarz com Subject to change Data without tolerance limits is not binding R amp S is a registered trademark of Rohde amp Schwarz GmbH 4 Co KG Trade names are trademarks of the owners The following abbreviations are used throughout this manual R amp S SMW200A is abbreviated as R amp S SMW R amp S WinIQSIM2 is abbreviated as R amp S WinlQSIM2 the license types 02 03 07 11 13 16 12 are abbreviated as 1 1 1 2 1 2 1 1 2 2 1 2 3 2 1 2 2 3 1 3 1 1 3 1 2 3 1 3 3 1 4 3 1 5 3 1 6 3 1 7 3 1 8 3 2 3 2 1 3 2 2 3 2 3 4 1 4 2 4 3 4 4 4 5 4 6 Contents roro 5 Documentation Overview LLULLU 5 Conventions Used in the Documentation U eese 7 Typographical ComVventiOns 7 Conventions for Procedure Descriptions
39. SOURce lt hw gt BB DVB DVBH DVBT LP ICODer RATE on page 67 Inner Bit Interleaver Activates deactivates the inner bit interleaver For details refer to chapter 3 1 5 Inner Interleaver on page 12 Remote command SOURce hw BB DVB DVBH DVBT IINTerleaver BIT STATe on page 68 Inner Symbol Interleaver Activates deactivates the inner symbol interleaver For details refer to chapter 3 1 5 Inner Interleaver on page 12 Remote command SOURce hw BB DVB DVBH DVBT IINTerleaver SYMBol STATe on page 69 System Configuration Inner Interleaver Mode Selects the inner interleaver mode Interleaver mode In depth is available only for transmission mode 2K and 4K For details refer to chapter 3 1 5 Inner Interleaver on page 12 Remote command SOURce hw BB DVB DVBH DVBT IINTerleaver SYMBol MODE on page 69 Inner Interleaver Tx Mode Selects the transmission mode This setting determines the number of the OFDM sub carriers For transmission mode 8K the in depth interleaver mode is not available For details refer to chapter 3 1 5 Inner Interleaver on page 12 Note Transmission mode 4K is only available for DVB H Remote command SOURce hw BB DVB DVBH DVBT IINTerleaver SYMBol on page 69 OFDM RF Bandwidth Selects the system Bandwidth Remote command 8 0 lt gt
40. age 40 SOURce hw BB DVB FILTer PARameter LPASs lt LPass gt The command sets the cut off frequency factor for the Lowpass APC opt filter type Parameters lt LPass gt float Range 0 05 to 2 Increment 0 01 RST 0 5 Example BB DVB FILT PAR LPAS 0 5 the cut off frequency factor is set to 0 5 Manual operation See Cut Off Frequency Factor on page 40 SOURce lt hw gt BB DVB FILTer PARameter LPASSEVM lt LPassEvm gt The command sets the cut off frequency factor for the Lowpass EVM opt filter type General Commands Parameters lt LPassEvm gt float Range 0 05 to 2 Increment 0 01 RST 0 5 Example BB DVB FILT PAR LPAS 0 5 the cut off frequency factor is set to 0 5 Manual operation See Cut Off Frequency Factor on page 40 SOURce lt hw gt BB DVB FILTer PARameter PGAuss lt PGauss gt The command sets the B x T for the Pure Gauss filter type Parameters lt PGauss gt float Range 0 15 to 2 5 Increment 0 01 RST 0 5 Example BB DVB FILT PAR GAUS 0 5 sets B x T to 0 5 for the Pure Gauss filter type Manual operation See Roll Off Factor or BxT on page 40 SOURce hw BB DVB FILTer PARameter RCOSine lt RCosine gt The command sets the roll off factor for the Root Cosine filter type Parameters lt RCosine gt float Range 0 to 1 0 Increment 0 01 RST 0 22 Example BB DVB FILT PAR RCOS 0 22 sets the roll off factor to 0 22 fo
41. al General Commands Example BB DVB TRIG SOUR INT selects an internal trigger source Manual operation See Trigger Source on page 25 SOURce lt hw gt BB DVB TRIGger EXTernal DELay lt Delay gt Sets the trigger delay Parameters lt Delay gt float Range 0 to 16777215 Increment 0 01 RST 0 Default unit samples Example BB DVB TRIG SOUR EXT BB DVB TRIG EXT DEL 50 Manual operation See Trigger Delay on page 27 SOURce lt hw gt BB DVB TRIGger EXTernal INHibit lt Inhibit gt Specifies the number of samples by which a restart is to be inhibited following an exter nal trigger event Parameters lt Inhibit gt integer Range 0 to 21 47 sampRate RST 0 Example BB DVB TRIG SOUR EXT BB DVB TRIG EXT INH 200 Manual operation See External Trigger Inhibit on page 27 SOURce lt hw gt BB DVB TRIGger SEQuence Sequence The command selects the trigger mode General Commands Parameters lt Sequence gt AUTO RETRigger AAUTo ARETrigger SINGle AUTO The modulation signal is generated continuously RETRigger The modulation signal is generated continuously A trigger event internal or external causes a restart AAUTo The modulation signal is generated only when a trigger event occurs After the trigger event the signal is generated continu ously signal generation is stopped with command SOUR BB DVB TRIG ARM EXEC and started agai
42. al local clock EXTernal EXTernal EGC1 Setting only provided for backward compatibility with other R amp S signal generators RST INTernal Example BB DVB CLOC SOUR INT selects the internal clock source BB DVB CLOC MODE MSAM selects clock type Multiple Sample i e the supplied clock has a rate which is a multiple of the sample rate BB DVB CLOC MULT 12 the multiplier for the external clock rate is 12 Manual operation See Clock Source on page 31 5 2 System Configuration This subsystem contains commands regarding the system configuration of the DVB signal System Configuration SOQURce lt hw gt BB DVB DVBRIDVBT FIMODe tnu ran 66 SOURce lt hw gt BB DVB DVBH DVBT HP LP DATA 66 SOURce lt hw gt BB DVB DVBH DVBT HP LP DATA DSELection 67 SOURce lt hw gt BB DVB DVBHR DVBT HP LPI ICODer RATE u TQ 67 SOURc lt hw gt BB DVB DVBH DVBTI HP LP ICODer STATe uuu enn 67 SOURce lt hw gt BB DVB DVBHIDVBT HP LPI OCODer STATe 68 SOURce lt hw gt BB DVB DVBHI DVBT HP LP OINTerleaver STATe 68 SOURce lt hw gt BB DVB DVBH DVBT HP LP PNSCrambler STATe 68 SOURce lt hw gt BB DVB DVBHIDVBT IINTerleaver BIT STATe
43. at has a positive effect on the transmitted RF spectrum For details refer to chapter 3 1 1 Pseudo Noise Scrambler on page 10 Remote command SOURce hw BB DVB DVBH DVBT HP LP PNSCrambler STATe on page 68 System Configuration Outer Coder RS Activates deactivates the outer coder The outer coder applies a Reed Solomon error correction code to the PRBS data stream For details refer to chapter 3 1 2 Outer Coder on page 11 Remote command SOURce lt hw gt BB DVB DVBH DVBT HP LP OCODer STATe page 68 Outer Interleaver Activates deactivates the outer convolutional interleaver For details refer to chap ter 3 1 3 Outer Interleaver on page 11 Remote command SOURce hw BB DVB DVBH DVBT HP LP OINTerleaver STATe on page 68 Inner Coder Activates deactivates the inner coder The inner coder is a punctured convolutional error correcting coder For details refer to chapter 3 1 4 Inner Coder on page 11 Remote command SOURce lt hw gt BB DVB DVBH DVBT HP LP ICODer STATe page 67 Rate Selects the code rate of the inner coder A number of incoming bits m to be encoded is transformed into an bit symbol containing n bits where m n is the code rate For details refer to chapter 3 1 4 Inner Coder on page 11 Note This field is available only if the inner code state is set to active Remote command
44. ates deactivates the TPS cell identification If activated the cell from which the signal comes from is identified Remote command SOURce hw BB DVB DVBH DVBT ID STATe On page 71 TPS Settings ID 4 hex Sets the cell ID for cell identification The cell ID identifies the cell from which the signal is transmitted This value is read by the receiver only if Cell Identification is activated Remote command SOURce hw BB DVB DVBH DVBT TPS ID PATTern on 71 Time Slicing Indicates the status of the time slicing bit If activated the average power consumption of the terminal is reduced Time slicing information has to be included in the transport stream and is not generated by this application Time slicing is always on for DVB H and always off for DVB T For details refer to chapter 3 2 2 Time Slicing on page 16 Remote command SOURce hw BB DVB DVBH DVBT TSLicing STATe page 71 MPE FEC Activates deactivates the multiprotocol encapsulation forward error correction bit MPE FEC must be performed in the transport stream and is not provided by this application For details refer to chapter 3 2 3 Forward Error Correction for Multiprotocol Encapsu lated Data MPE FEC on page 18 Remote command SOURce lt hw gt BB DVB DVBH DVBT TPS MFEC STATe on page 71 TPS Table The TPS parameter bit table displays the status of the transmitted TPS
45. ations The screenshots usually show a fully equipped product that is with all options instal led Thus some functions shown in the screenshots may not be available in your par ticular product configuration Accessing the DVB H T Dialog 2 Welcome to the DVB H T Digital Standard 2 1 The R amp S SMW K52 is a firmware application that adds functionality to generate sig nals in accordance with the DVB H Digital Video Broadcasting Transmission System for Handheld Terminals standard DVB digital video broadcasting provides a communications infrastructure for powerful transmission of MPEG 2 based data Besides satellite based DVB S terrestrial DVB T and cable bound DVB C transmission schemes the latest version DVB H is for portable handheld terminals DVB H is an extension to DVB and is compatible with the basic concept of the standard The extensions bring advantages that are espe cially important for portable devices low power consumption small hardware and robustness against fading effects In recent years mobile phones and video applications have merged more and more Some years ago the mobile phone was only a means of making phone calls today one can watch TV on handheld devices These new applications are becoming more and more important The main advantages of the DVB H DVB T digital standard option R amp S SMW K52 are possibility to test both mobile communications standards such as W CDMA 3GPP FDD T
46. ce BB DVB TRIGger OUTPut MODE RATio on the marker outputs is ON Parameters lt Ontime gt Example Manual operation integer Range 1 to 2424 1 16 777 215 samples Increment 1 sample RST 1 BB DVB TRIG OUTP2 ONT 2000 sets an ON time of 2000 samples for marker 2 See Marker Mode on page 29 SOURce lt hw gt BB DVB TRIGger OUTPut lt ch gt PATTern Pattern The command defines the bit pattern used to generate the marker signal General Commands Parameters lt Pattern gt 32 bit pattern RST 0 Example BB DVB TRIG OUTP2 PATT H39FE0000 32 sets the bit pattern BB DVB TRIG OUTP MODE PATT activates the marker signal according to a bit pattern for the cor responding marker signal Manual operation See Marker Mode on page 29 SOURce lt hw gt BB DVB TRIGger OUTPut lt ch gt PULSe DIVider lt Divider gt The command sets the divider for the pulsed marker signal in the setting SOURce BB DVB TRIGger OUTPut MODE PULSe The pulse frequency is derived by dividing the symbol rate by the divider Parameters lt Divider gt integer Range 2 to 1024 Increment 1 RST 0 Example BB DVB TRIG OUTP PULS DIV 2 sets the divider for the corresponding marker signal to the value 2 BB DVB TRIG OUTP2 FREQ queries the resulting pulse frequency of the marker signal Response 66 000 the resulting pulse frequency is 66 kHz Manual operation See Mar
47. ching to the next cell migitate the effects of man maid noise and severe mobile multipath channels the receiving capabilities offer sufficient flexibility and scalability to allow reception of services at various speeds e offer the flexibility to be used in various transmission bands and channel bandwiths The basic technical extensions that make it possible to receive digital video broadcast ing services on handheld terminals are Mode and In Depth Interleavers Time Slicing Forward Error Correction for Multiprotocol Encapsulated Data MPE FEC 3 2 1 4K Mode and In Depth Interleavers The additional 4K mode is an trade off between transmission cell size and mobile reception capabilities to improve network planning flexibility The 4K mode is suitable for single transmitter operation and for small and medium single frequency networks SFN It provides a Doppler tolerance allowing very high speed reception The mobile reception is faster compared to the 8K mode and the cell size is bigger compared to the 2K mode The additional in depth interleavers increase the flexibility of the interleaving for the 2K and 4K mode The depth of the inner interleaver is enlarged to four consecutive OFDM symbols 2K or to two consecutive OFDM symbols 4 3 2 2 Extensions to DVB T In depth 4K inner interleaver Fig 3 4 In Depth Interleaver for 2K and 4K Mode Time Slicing The time slicing module provided with
48. ctivates deactivates the inner bit interleaver Parameters State 0 1 RST 1 Example BB DVB DVBH IINT BIT ON activates the inner bit interleaver Manual operation See Inner Bit Interleaver on page 33 System Configuration SOURce lt hw gt BB DVB DVBH DVBT IINTerleaver SYMBol MODE Mode The command selects the inner interleaver mode Parameters lt Mode gt NATive NATIve IDEPth NATive The interleaver interleaves the bits over one OFDMA symbol IDEPth The interleaver interleaves the bits over two 4K transmission mode or four 2K transmission mode OFDMA symbols RST NATive Example BB DVB DVBH IINT SYMB MODE NAT sets the inner interleaver mode to Native Manual operation See Inner Interleaver Mode on page 34 SOURce hw BB DVB DVBH DVBT IINTerleaver SYMBol TMODe lt TMode gt The command selects the transmission mode Parameters lt TMode gt T2K T4K T8K RST T2K Example BB DVB DVBH IINT SYMB TMOD T2K sets the transmission mode to T2K Manual operation See Inner Interleaver Tx Mode on page 34 SOURce lt hw gt BB DVB DVBH DVBT IINTerleaver SYMBol STATe State The command activates deactivates the inner symbol interleaver Parameters State 0 1 OFF RST 1 Example BB DVB DVBH IINT SYMB ON activates the inner symbol interleaver Manual operation See Inner Symbol Interleaver on page 33 SOURce lt hw gt BB
49. d PN15 23 PRBS data as per CCITT with period lengths between 29 1 and 223 1 is generated internally DLISt Internal data from a TS file is used RST PN23 System Configuration Example BB DVB DVBH HP DATA PN23 selects PN23 as data source Manual operation See HP LP Source on page 32 SOURce lt hw gt BB DVB DVBH DVBT HP LP DATA DSELection lt Dselection gt The command selects the TS file for the data source selection The lists are stored as files with the fixed file extensions gts ts or trpina directory of the user s choice The directory applicable to the following commands is defined with the command MMEMory CDIR To access the files in this directory you only have to give the file name without the path and the file extension Parameters lt Dselection gt string Example BB DVB DVBH HP DATA DLIS selects the data list as the data source MMEM CDIR var user temp Lists selects the directory for the data lists BB DVB DVBH HP DATA DSEL dvb 1 selects the file 1 as the data source This file must be in the directory and have the file extension gts ts or trp Manual operation See HP LP Source on page 32 SOURce hw BB DVB DVBH DVBT HP LP ICODer RATE Rate The command selects the code rate of the inner coder Parameters Rate CR1D2 CR2D3 CR3D4 CR5D6 CR7D8 RST CR1D2 Example BB DVB DVBH HP ICOD RATE 102 sets the rate to CR
50. d internally from it The multiplier is entered with the com mand BB DVB CLOCk MULTiplier Parameters Mode SAMP MSAMp RST SAMP Example BB DVB CLOC MODE MSAM sets the type of externally supplied clock Manual operation See Clock Mode on page 31 SOURce lt hw gt BB DVB CLOCk MULTiplier lt Multiplier gt The command specifies the multiplier for clock type Multiple Sample BB DVB CLOCk MODE MSAMple in the case of an external clock source Parameters lt Multiplier gt integer Range 1 to 64 Increment 1 RST 4 System Configuration Example SOURCe1 BB DVB CLOCk SOURce EGC1 selects the external clock source SOURce1 BB DVB CLOCk MODE MSAMple selects clock type Multiple Sample i e the supplied clock has a rate which is a multiple of the sample rate SOURCe1 BB DVB CLOC MULTiplier 12 the multiplier for the external clock rate is 12 Manual operation See Clock Multiplier on page 31 SOURce hw BB DVB CLOCk SOURce Source The command selects the clock source For two path instruments selecting EXTernal is only possible for path A since the external clock source is permanently allocated to path A selecting AINTernal is only possible for path B Parameters Source INTernal EGC1 EGC2 ELCLock EXTernal INTernal The instrument uses its internal clock reference EGC1 EGC2 External global clock ELCLock Extern
51. e outputs of the v bit interleavers are grouped to form the digital data symbols such that each symbol of v bits will consist of exactly one bit from each of the v interleavers The purpose of the symbol interleaver is to map v bit words onto 1512 2K mode 3024 4K mode or 6048 8K mode active carriers per OFDM symbol The symbol interleaver acts on blocks of 1512 2K mode 3024 4K mode or 6048 8K mode data symbols Furthermore for the interleaver is an in depth mode available for 2K and 4K in which the interleaver always maps the v bit words onto 6048 This is described in detail in chapter 3 2 1 4K Mode and In Depth Interleavers on page 15 Mapper All data carriers in one OFDM symbol are modulated using either QPSK 16 QAM or 64 QAM Additionally for the hierarchical mode non uniform 16 QAM and non uniform 64 QAM constellations are available with different values for parameter a a ist the minimum distance separating two constellation points carrying different HP bit values divided by the minimum distance separating any two constellation points For non hierarchical transmission the constellation is shaped as if a is 1 16 QAM mapping with a 2 16 QAM mapping with a 1 Frame Adaption The transmitted signal is organized in super frames Each super frame consists of 4 frames Each frame contains scattered pilot cells continual pilot carriers and TPS carriers The pilots can be used for frame synch
52. emp waveform sets the default directory to var user temp waveform BB DVB WAV CRE DVB 1 creates the waveform file DVB wv in the default directory Usage Setting only Manual operation See Generate Waveform File on page 22 SOURce lt hw gt BB DVB DVBH DVBT DRATe The command queries the data rate Return values lt DRate gt float Increment 0 01 Example BB DVB DVBH DRAT queries the data rate General Commands Usage Query only Manual operation See Sample Rate Data Rate on page 22 SOURce lt hw gt BB DVB DVBH DVBT DURation The command queries the signal duration Return values lt Duration gt float Example BB DVB DVBH DUR queries the signal duration Usage Query only Manual operation See Number of Samples Duration on page 22 SOURce lt hw gt BB DVB DVBH DVBT SAMPle LENGth Queries the number of the transmitted samples Return values lt Length gt integer Example BB DVB DVBH SAMP LENG queries the number of the transmitted samples Usage Query only Manual operation See Number of Samples Duration on page 22 SOURce lt hw gt BB DVB DVBH DVBT SAMPle RATE The command queries the sample rate Return values lt Rate gt float Example BB DVB DVBH SAMP RATE queries the sample rate Usage Query only Manual operation See Sample Rate Data Rate on page 22 SOURce lt hw gt BB DV
53. ents of the dialog change with the selected marker mode the settings are self explanatory Restart A marker signal is generated at the start of every sequence length loop Super Frame A marker signal is generated at the start of every super frame period Start Frame Start marker signal is generated at the start of each frame Pulse A regular marker signal is generated The pulse frequency is defined by entering a divider The frequency is derived by dividing the sample rate by the divider The input box for the divider opens when Pulse is selected and the resulting pulse frequency is displayed below it Remote command SOURce hw BB DVB TRIGger OUTPut lt ch gt PULSe DIVider page 63 SOURce lt hw gt DVB TRIGger OUTPut lt ch gt PULSe FREQuency on page 63 Pattern A marker signal that is defined by a bit pattern is generated The pat tern has a maximum length of 64 bits and is defined in an input field which opens when pattern is selected Remote command SOURce lt hw gt BB DVB TRIGger OUTPut lt ch gt PATTern on 62 ON OFF A regular marker signal that is defined by an ON OFF ratio is gener Period ated A period lasts one ON and OFF cycle The ON Time and OFF Time are each expressed as a number of samples and are set in an input field which opens when ON OFF ratio is selected ON time OFF time ON time OFF time Remote command SOURce
54. er 56 SOURceshw BB DVB TRIGger S OURCGe i artnet rem hte ee cere 57 SOURceshws BB DVB f RlGger EXTernal 58 SOURce hw BB DVB TRIGger EXTernal INElbit eonun 58 SOURceshw BB DVB WAVeform CREate 5 reti ri ener oie 47 lt TRIGGER SEQUENCE LLL nre rrr oen ea pr terr regc eere 58 Index B 40 49 eves 34 Clipping rm retro 42 Baseband filter c e 40 52 Cell Identificati Cell Identification Cell Identification Pattern DVB H 71 222 NATE Settings iu Clipping Level Clipping Mode Clipping State Clock M 31 Multiplier u M 31 Source Common trigger settings u uU U s 24 Conventions SOPI COMIMANGS RES 44 Coupled trigger settings 24 CHOSUTACUON EAEN aa 42 Crest factor rne 52 Current range without recalculation 30 Current Range Without Recalculation SERT CN Minimum Cut Off Frequency Factor Cut Off Frequency Shift 2 st D Data Rate usu Data Ra
55. erleaver Tx Mode DVB H 69 Inner Symbol Interleaver 33 Inner Symbol Interleaver DVB H 299 8 Manual do je 5 RR REDE 54 Marker delay Marker Delay Marker mode Measured external clock 91 Modulation 34 FEC 190 MPE FEC DVB H tege 71 Multiprotocol Encapsulation Forward Error Correction pir p 71 N Number of Samples upa 22 Number of Super Frames 22 Number of Super Frames DVB H 48 Nyquist filter u caet eene 40 52 OFDM RF DVB H a niin tds 70 OFDM RF Alph DVB H 69 OFDM RF Guard Interval DVB H 70 OFDM RF Modulation DVB H 70 ON OFF Ratio Marker 62 Online help Outer Coder A333 Outer Coder IVB H uuu luu eaten 68 Outernter leaVeru eoi eR c Ae 33 Outer Interleaver DVB H 68 P PN Scrarmiblet i ce etc eret 32 PN Scrambler DVB H 68 R 33 Rate DVB H 67 Release notes 6 Retrigger 24 58 40 49 PRUNING
56. estrict the range of val ues to the dynamic range i e the range within which a delay of the marker signals can be set without restarting the marker and signal Parameters Delay float Range 0 to 2 24 1 samples Increment 0 01 RST 0 Example BB DVB TRIG OUTP DEL 1600 sets a delay of 1600 samples for the corresponding marker sig nal Manual operation See Marker x Delay page 30 SOURce lt hw gt BB DVB TRIGger OUTPut lt ch gt DELay MAXimum The command queries the maximum marker delay for set ting BB DVB TRIG OUTP DEL FIX ON Return values lt Maximum gt float General Commands Example BB DVB TRIG OUTP DEL FIX ON restricts the marker signal delay setting range to the dynamic range BB DVB TRIG OUTP DEL MAX queries the maximum of the dynamic range Response 20000 the maximum for the marker delay setting is 20000 samples Usage Query only Manual operation See Marker x Delay on page 30 SOURce lt hw gt BB DVB TRIGger OUTPut lt ch gt DELay MINimum The command queries the minimum marker delay for set ting BB DVB TRIGger OUTPut DELay FIXed ON Return values lt Minimum gt float Example BB DVB TRIG OUTP DEL FIX ON restricts the marker signal delay setting range to the dynamic range BB DVB TRIG OUTP DEL MIN queries the minimum of the dynamic range Response 0 the mi
57. g networks and remote operation Using the common status registers For a description of such tasks see the R amp S SMW user manual Modulation System DVB H 3 About this Digital Standard The follwoing sections provide some background information on basic terms and prin ciples used in the DBV H T 3 1 Modulation System DVB H The following block diagramm shows the components of the DVB H transmission sys tem o In this release only the high priority input is available High Priority Pseudo HP Noise Scrambling MPEG 2 Stream Source Coded Multiplexed Low Priority Pseudo Outer Outer Inner E Sader voder loue Rate Signals Fig 3 1 Components of the Transmission System DVB H 3 1 4 Pseudo Noise Scrambler The MPEG 2 transport packet stream is organized in fixed packet length of 188 bytes This includes 187 data bytes and one sync byte Sync Data 1 byte 187 bytes The data packets of the input stream are transformed to a Pseudo Random Binary Sequence PRBS in order to obtain a bit sequence that has a positive effect on the transmitted RF spectrum The PRBS polynomial is specified as 1 x14 x 5 The PRBS generator is loaded with the sequence 100101010000000 at the start of every eight transport packet To provide an initialization signal for the descrambler the sync byte of the first trans
58. he local T M C connector With coupled trigger settings the signal has to be provided at the T M C 1 2 3 con nectors e External Local Clock The trigger event is the active edge of an external local clock signal provided and configured at the local T M C connector With coupled trigger settings the signal has to be provided at the T M C 1 connec tor Remote command SOURce lt hw gt BB DVB TRIGger SOURce on page 57 Sync Output to External Trigger Trigger Settings Common to All Basebands For an external trigger signal enables disables the output of a signal synchronous to the external trigger event On Corresponds to the default state of this parameter The signal calculation starts simultaneously with the external trigger event but because of the instrument s processing time the first sam ples are cut off and no signal is output After elapsing of the internal processing time the output signal is synchronous to the trigger event Ext Trigger Event Calculated signal Signal at the output Trigger Settings Off The signal output begins after elapsing of the processing time and starts with sample 0 i e the complete signal is output This mode is recommended for triggering of short signal sequences with signal duration comparable with the processing time of the instrument Ext Trigger Event Calculated signal Signal at the output Processing time Remote co
59. ignal like the marker mode or marker delay settings D This section focuses on the available settings For information on how these settings affect the signal refer to section Basics on in the R amp S SMW user manual gt To access this dialog select Baseband gt DVB gt Marker Current Range Without Recalculation See B9 4 Re eae NOW CELO l 0 000 Samples gung 2000 Samples EE T ML W U Marker 2 0 000 Samples 0 2000 Samples dc WW 3 0 000 Samples 0 2000 Samples Fix Marker Delay To Current Range This dialog comprises the settings required for configuring the marker mode and the marker delay Marker Settings Routing and Enabling a Marker The provided marker signals are not dedicated to a particular connector but can be mapped to one or more globally shared USER or local T M C connectors To route and enable a marker signal perform the following general steps Define the shape of the generated marker i e select the Marker gt Mode e Define the connector USER or T M C the selected signal is output at i e config ure the Local and Global Connector Settings Marker Mode Marker configuration for up to 3 marker channels The settings are used to select the marker mode defining the shape and periodicity of the markers The cont
60. irectory it is stored in are user definable the predefined file extension for waveform files is wv Remote command SOURce hw BB DVB WAVeform CREate on page 47 DVB Standard Selects the DVB standard to be used to generate the modulation signal Remote command SOURce hw BB DVB STANdard on page 46 Hierarchy Mode Selects the hierarchy mode Note In this release only the non hierarchical mode is available Non hierarchi The high priority input is used cal Remote command SOURce hw BB DVB DVBH DVBT HMODe on page 66 Number of Super Frames Sets the number of the transmitted super frames Each super frame consists of four OFDM frames Remote command SOURce lt hw gt BB DVB DVBH DVBT SFRames page 48 Number of Samples Duration Displays the number of the transmitted samples and the signal duration Remote command SOURce lt hw gt BB DVB DVBH DVBT SAMPle LENGth on page 48 SOURce lt hw gt BB DVB DVBH DVBT DURation on page 48 Sample Rate Data Rate Displays the sample and data rates Remote command SOURce lt hw gt BB DVBH DVBT SAMPle RATE on page 48 SOURce lt hw gt BB DVB DVBH DVBT DRATe on page 47 4 2 Trigger Settings Filter Clipping Settings Access to the dialog for setting baseband filtering and clipping see chapter 4 8 Filter
61. its from the redundant data stream Puncturing slightly impairs the characteristics of the code The code rates that can be set are 1 2 2 3 3 4 5 6 and 7 8 The code rate can be selected according to the required trans mission characteristics of the system 3 1 5 Modulation System DVB H Table 3 1 Puncturing pattern and transmitted sequence after conversion for the possible code rates Code Rates r Puncturing Pat Transmitted Sequence after parallel to serial conver tern sions 1 2 X 1 Y 1 2 3 10 Y 11 3 4 X 101 X1Y1Y 2X3 Y 110 5 6 X 10101 X1Y1Y2X3Y X Y 11010 7 8 X 1000101 X1Y1Y2Y3Y4X5Y6X7 Y 1111010 Data Input Modulo 2 addition X Output G 171 Octal Y Output G 133 Octal Modulo 2 addition Fig 3 2 Mother convolutional code rate of 1 2 Inner Interleaver The inner interleaver consists of a bit wise interleaving followed by symbol interleaving Both interleaving processes are block based In non hierarchical mode the input bit stream for the bit wise interleaving is multi plexed into v sub streams depending on the modulation mode with v representing the number of bits symbol Modulation Mode Sub Stream v QPSK 2 16 QAM 4 64 QAM 6 3 1 7 Modulation System DVB H In hierachical mode the high priority stream is demultiplexed into two sub streams and the low priority stream is demultiplexed into v 2 sub streams Th
62. ker Mode on page 29 SOURce lt hw gt BB DVB TRIGger OUTPut lt ch gt PULSe FREQuency The command queries the pulse frequency of the pulsed marker signal in the set ting BB DVB TRIGger OUTPut MODE PULSe The pulse frequency is derived by dividing the symbol rate by the divider The divider is defined with com mand BB DVB TRIG OUTP PULS DIV Return values lt Frequency gt float 5 1 6 General Commands Example BB DVB TRIG OUTP2 PULS DIV 2 sets the divider for the corresponding marker signal to the value 2 BB DVB TRIG OUTP2 MODE PULS enables the pulsed marker signal BB DVB TRIG OUTP FREQ queries the resulting pulse frequency of the marker signal Response 66 000 the resulting pulse frequency is 66 kHz Usage Query only Manual operation See Marker Mode on page 29 Clock Settings This section lists the remote control commands necessary to configure the clock LSOURceshw CLOCK MODE iii of cette he ee reete 64 SOURcexhw BB DVB CLOCKMUETIiplier 2 2 222 ssssasssasqasussssassassssawssyassssasayaqusaus 64 SOURGe lt hW gt BB IDVB GLOGCKR ISOURG68 L ses cierran tropa tarta 65 SOURce lt hw gt BB DVB CLOCk MODE Mode The command enters the type of externally supplied clock BB DVB CLOCk SOURce EXTernal When MSAM is used a multiple of the sample clock is supplied and the clock is derive
63. lt hw gt BB DVB TRIGger OUTPut lt ch gt ONTime on page 62 SOURce lt hw gt BB DVB TRIGger OUTPut lt ch gt OFFTime 62 Remote command SOURce lt hw gt BB DVB TRIGger OUTPut ch on page 61 Clock Settings Marker x Delay Defines the delay between the marker signal at the marker outputs relative to the sig nal generation start Marker x For the corresponding marker sets the delay as a number of sym bols Remote command SOURce lt hw gt DVB TRIGger OUTPut lt ch gt DELay 60 Current Range without Recalculation Displays the dynamic range within which the delay of the marker sig nals can be set without restarting the marker and the signal Move the setting mark to define the delay Remote command SOURce lt hw gt BB DVB TRIGger OUTPut ch DELay MINimum page 61 SOURce lt hw gt BB DVB TRIGger OUTPut ch DELay MAXimum on page 60 Fix marker delay to current range Restricts the marker delay setting range to the dynamic range Remote command SOURce lt hw gt BB DVB TRIGger OUTPut DELay FIXed on page 60 4 4 Clock Settings This dialog provides an access to the settings necessary to select and configure the clock signal like the clock source and clock mode This section focuses on the available settings For information on how these settings affect the signal refer to section
64. mmand SOURce hw BB DVB TRIGger EXTernal SYNChronize OUTPut on page 54 External Trigger Inhibit Trigger Settings Common to All Basebands For external trigger signal or trigger signal from the other path sets the duration a new trigger event subsequent to triggering is suppressed In Retrigger mode for example a new trigger event will not cause a restart of the signal generation until the specified inhibit duration does not expire For more information see chapter Basics in the R amp S SMW User Manual Remote command SOURce hw BB DVB TRIGger EXTernal INHibit page 58 SOURce hw BB DVB TRIGger OBASeband INHibit on page 55 Trigger Delay Delays the trigger event of the signal from the external trigger source the other path the other basebands internal trigger if common trigger settings are used Use this setting to synchronize the instrument with the device under test DUT or other external devi ces postpone the signal generation start in the basebands compared to each other For more information see chapter Basics on in the R amp S SMW User Manual Remote command SOURce lt hw gt BB DVB TRIGger EXTernal DELay page 58 SOURce lt hw gt DVB TRIGger OBASeband DELay on 55 Marker Settings 4 3 Marker Settings This dialog provides an access to the settings necessary to select and configure the marker output s
65. more it provides a complete description of the remote control commands with programming examples An introduc tion to remote control is provided as well as information on maintenance instrument interfaces and troubleshooting In the user manuals for the individual software options the specific instrument func tions of this option are described in detail For additional information on default settings and parameters refer to the data sheets Basic information on operating the R amp S SMW is not included in these user manuals Documentation Overview The user manuals are available in PDF format in printable form on the Documenta tion CD ROM delivered with the instrument All user manuals are also available for download from the Rohde amp Schwarz website on the R amp S SMW product page at http www rohde schwarz com product SMW200A html gt Downloads gt Manuals Service Manual The service manual is available in PDF format on the CD delivered with the instrument It describes how to check compliance with rated specifications instrument function repair troubleshooting and fault elimination It contains all information required for repairing the R amp S SMW by replacing modules Release Notes The release notes describe the installation of the firmware new and modified func tions eliminated problems and last minute changes to the documentation The corre sponding firmware version is indicated on the title page of the
66. n when a trig ger event occurs ARETrigger The modulation signal is generated only when a trigger event occurs The device automatically toggles to RETRIG mode Every subsequent trigger event causes a restart Signal generation is stopped with command SOUR BB DVB TRIG ARM EXEC and started again when trig ger event occurs SINGIe The modulation signal is generated only when a trigger event occurs After the trigger event the signal is generated once to the set sequence length SOUR BB DVB TRIG SLEN Every subsequent trigger event causes a restart RST AUTO Example BB DVB SEQ AAUT sets the Armed auto trigger mode the device waits for the first trigger e g with TRG and then generates the signal continu ously Manual operation See Trigger Mode on page 24 5 1 5 Marker Settings This section lists the remote control commands necessary to configure the markers ESOURce lt hw gt BB DVB TRIGger OUTPut DELay FIXed u 60 85 lt gt lt gt 60 5 lt gt 0 lt gt 60 SOURce lt hw gt BB DVB TRIGger OUTPut lt ch gt DELay MINIirmurri
67. nimum for the marker delay setting is 0 symbols Usage Query only Manual operation See Marker x Delay on page 30 SOURce lt hw gt BB DVB TRIGger OUTPut lt ch gt MODE Mode Defines the signal for the selected marker output Parameters lt Mode gt Example Manual operation General Commands RESTart SFRame SFRAMe FRAMe PULSe PATTern RATio RESTart A marker signal is generated at the start of every sequence length loop Restart mode is available only for ETI data source SFRame A marker signal is generated at the start of every super frame period FRAMe A marker signal is generated at the start of every frame PULSe A marker pulse is generated continuously according to the fre quency and frequency divider PATTern A marker signal is generated due to a bit pattern given by the user Each bit represents a sample and can be switched on or off RATio A regular marker signal that is defined by an ON OFF ratio is generated A period lasts one ON and OFF cycle RST RESTart BB DVB TRIG OUTP MODE FRAME selects the frame marker signal for the corresponding marker signal See Marker Mode on page 29 SOURce lt hw gt BB DVB TRIGger OUTPut lt ch gt OFFTime lt OffTime gt SOURce lt hw gt BB DVB TRIGger OUTPut lt ch gt ONTime lt Ontime gt The command sets the number of samples in a period ON time OFF time during which the marker signal in setting SOUR
68. ntity configuration with separate base bad sources ENTity3 4 require option R amp S SMW K76 SOURce lt hw gt 114 available baseband signals only SOURce1 possible if the keyword ENTity is used OUTPut ch 1 3 available markers Using SCPI command aliases for advanced mode with multiple entities You can address multiple entities configurations by using the SCPI commands starting with the keyword SOURce or the alias commands starting with the keyword ENTity Note that the meaning of the keyword SOURce lt hw gt changes in the second case For details see section SCPI Command Aliases for Advanced Mode with Multiple Entities in the R amp S SMW user manual The following commands specific to the DVB are described here 5 1 General Commands This subsystem contains commands for the primary and general settings of the DVB standard These settings concern activation and deactivation of the standard filter clock and trigger settings General Commands 5 1 1 Primary Commands SOURceshw BBIDVBIPRESeLt 45 BR DVESE T CATAlQU u um aa 45 SOURce lt hw gt BB DVB SET Ting DEL ete 2 46 5 lt gt 9 nenne nennen nnn nennt nennen 46 ESOURceshw BB OVE 46 5 0 gt
69. og boxes menus options buttons and softkeys are enclosed by quotation marks KEYS Key names are written in capital letters File names commands File names commands coding samples and screen output are distin program code guished by their font Input Input to be entered by the user is displayed in italics Links Links that you can click are displayed in blue font References References to other parts of the documentation are enclosed by quota tion marks 1 2 2 Conventions for Procedure Descriptions When describing how to operate the instrument several alternative methods may be available to perform the same task In this case the procedure using the touchscreen is described Any elements that can be activated by touching can also be clicked using an additionally connected mouse The alternative procedure using the keys on the instrument or the on screen keyboard is only described if it deviates from the standard operating procedures The term select may refer to any of the described methods i e using a finger on the touchscreen a mouse pointer in the display or a key on the instrument or on a key board 1 2 3 Notes on Screenshots When describing the functions of the product we use sample screenshots These screenshots are meant to illustrate as much as possible of the provided functions and possible interdependencies between parameters The shown values may not represent realistic test situ
70. port packet in a group of eight packets is bit wise inverted Modulation System DVB H from 0x47 to 0xb8 whereas the sync bytes of the next seven packets remain 0x47 After that the PRBS generator runs continuously through the eight packets with a PRBS period of 1503 bytes 8 packets 188 bytes 1sync byte 8 Transport MUX packets ISYNC1 Randomized Data 187 bytes PRBS period 1053 SYNC2 Randomized Data SYNC8 Randomized Data SYNC1 Randomized Data 187 bytes 187 bytes 187 bytes 3 1 2 Outer Coder The outer coder is a Reed Solomon encoder RS 204 188 t 8 The RS coding is applied to each randomized transport packet 188 byte to generate an error protected packet with a length of 204 bytes 188 randomized transport packets 16 parity bytes With this RS code up to eight erroneous bytes can be detected in the transport stream packet and corrected 204 bytes Randomized Data 16 Parity bytes 187 bytes 3 1 3 Outer Interleaver The outer interleaver is an convolutional interleaver with 12 branches Each branch j is a FIFO shift register with depth jx 17 cells 204 bytes 3 1 4 Inner Coder The inner coder is a punctured convolution code based on a mother convolutional code of rate 1 2 with 64 states The inner coder encodes the input data punctures cer tain bits to obtain higher code rates and serializes the 1 0 symbols to be transmitted The integrated puncturer removes b
71. r filter type Root Cosine Manual operation See Roll Off Factor or BxT on page 40 SOURce lt hw gt BB DVB FILTer PARameter SPHase lt SPhase gt The command sets the B x T for the Split Phase filter type Parameters lt SPhase gt float Range 0 15 to 2 5 Increment 0 01 RST 2 00 General Commands Example BB DVB FILT PAR SPH 0 5 sets B x T to 0 5 for the Split Phase filter type Manual operation See Roll Off Factor or BxT on page 40 SOURce hw BB DVB FILTer TYPE Type The command selects the filter type Parameters Type RCOSine COSine GAUSs LGAuss CONE COF705 COEQualizer COFequalizer C2K3x APCO25 SPHase RECTangle PGAuss LPASs DIRac ENPShape EWPShape LPASSEVM RST GAUSs Example BB DVB FILT TYPE RCOS sets the filter type RCOSine Manual operation See Filter on page 40 SOURce lt hw gt BB DVB SRATe VARiation Variation The command enters the output sample rate A variation of this parameter only affects the ARB clock rate all other signal parame ters remain unchanged If the sampling rate in the frame configuration menu is changed this parameter is reset to the chosen sampling rate Parameters Variation float Range 400 Hz to 40 MHz RST 0 001 Hz Example BB DVB SRAT VAR 40 MHz sets the output sample rate to 40 MHz Manual operation See Sample Rate Variation on page 40 Clipping Settings SOURce hw BB DV
72. release notes The latest versions are available for download from the R amp S SMW product page at http www rohde schwarz com product SMW200A html gt Downloads gt Firmware Web Help The web help provides online access to the complete information on operating the R amp S SMW and all available options without downloading The content of the Web Help corresponds to the user manuals for the latest product version The web help is available from the R amp S SMW product page at http www rohde schwarz com product SMW200A html gt Downloads gt Web Help Tutorials A set of tutorials is embedded in the software The tutorials offer guided examples and demonstrations on operating the R amp S SMW Application Notes Application notes application cards white papers and educational notes are further publications that provide more comprehensive descriptions and background informa tion A subset of application notes is provided on the documentation CD ROM delivered with the instrument The latest versions are available for download from the Rohde amp Schwarz website at http www rohde schwarz com appnotes Conventions Used in the Documentation 1 2 Conventions Used in the Documentation 1 2 1 Typographical Conventions The following text markers are used throughout this documentation Convention Description Graphical user interface ele All names of graphical user interface elements on the screen such as ments dial
73. ronization frequency synchronization time synchro nization channel estimation and transmission mode identification Modulation System DVB H Each frame consists of 68 OFDM symbols Each symbol consists of a guard interval and a useful part The symbols in an OFDM frame are numbered from 0 to 67 Super Frame Guard Interval Useful part Fig 3 3 OFDM frame structure Each OFDM symbol is constituted by a set of carriers The number of carriers depends on the OFDM mode OFDM Mode No of Carriers 2K 1705 4K 3409 8K 6817 3 1 8 Transport Parameter Signalling The Transport Parameter Signalling TPS carriers are used to signalling parameters related to the transmission scheme The TPS is transmitted parallel on 17 TPS carriers for the 2K mode 34 carriers for the 4K mode and 68 carriers for the 8K mode Every TPS carrier in the same symbol conveys the same differentially encoded information bit The TPS parameter bits are described in chapter 4 7 TPS Settings on page 35 Extensions to DVB T 3 2 Extensions to DVB T The Digital Video Broadcasting Handheld DVB H standard is based on the earlier standard DVB T which is used for terrestrial digital broadcasting DVB H provides features to meet the specific requirements for handheld mobile termi nals such as power off some part of the reception chain to increase the battery duration ease access to the services when receivers swit
74. rror Protection 4 8 Filter Clipping Settings gt access this dialog select General gt Filter Clipping ARB Settings The dialog comprises the settings necessary to configure the baseband filter and to enable clipping 48 15 Filter Settings gt access this dialog select Filter DVB A Filter Clipping Settings Filter Roll Off Factor Cut Off Frequency Shift Sample Rate Variation 0 10 0 10 9 142 857 143 MHz The dialog comprises the settings necessary to configure the baseband filter Filter Clipping Settings Filter Selects the baseband filter Remote command SOURce hw BB DVB FILTer TYPE on page 52 Roll Off Factor or BxT Sets the filter parameter The filter parameter offered Roll Off Factor or BxT depends on the currently selected filter type This parameter is preset to the default for each of the predefined filters Remote command SOURce lt hw gt BB DVB FILTer PARameter APCO25 on page 49 SOURce lt hw gt BB DVB FILTer PARameter COSine on 49 SOURce lt hw gt BB DVB FILTer PARameter GAUSs page 50 SOURce lt hw gt BB DVB FILTer PARameter PGAuss on page 51 SOURce lt hw gt BB DVB FILTer PARameter RCOSine page 51 SOURce lt hw gt BB DVB FILTer PARameter SPHase page 51 Cut Off Frequency Shift available for filter parameter Cosine onl
75. s the carrier to noise C N per formance and the Doppler performance in mobile channels and improve the tolerance to impulse interference This is accomplished by adding an additional Reed Solomon code RS 255 191 in conjunction with a block interleaver The MPE FEC module provides a specific frame structure the MPE FEC frame The MPE FEC frame consists of an application data table ADT with 191 columns for the IP datagramms and an Reed Solomon data table RDT with 61 columns for the Reed Solomon parity information The IP datagramms are introduced vertically column by column Empty cells and col umns are padded with zeros The RS code is coded line by line For each row of 191 IP datagramm bytes the 64 parity bytes are calculated using the RS code This pro vides a virtual interleaving effect because all RS data bytes are calculated from the IP datagramms After the coding is finished the IP datagramms are encapsulated and transmitted in an MPE section and the parity information data of each column in the RDT table are trans mitted in an MPE FEC section Extensions to DVB T i i i H i i 21500 m 191 MPE FEC Frame MPE FEC Packet MPEG 2 Packet rai ral Fig 3 7 MPE FEC Packet Frame Structure Transmitting the IP datagramms and parity information data in separate sections allows the receiver to choose whether to use the MPE FEC feature or not If the MPE FEC decoder is not implemen
76. t DVB H Data Source DVB H ES Delay Markea TREE 30 TOJON 27 Delay IET cre 60 Documentation overview 5 Duration DVB H 48 DVB Standard sena nre ranas 22 Execute Trlggeb 54 External trigger BI ye eer 27 External trigger inhibit 27 F cree S 39 SCLIN OS 39 Filter Parameter 40 49 Filter Type ya gasas ER d E UE E 40 52 Filtering Clipping Settings 5 eere 39 Fix marker delay to current range 1 30 Fix marker to dynamic range 60 G Generate Waveform file ere tenera cr eines 22 Getting started Guard Interval H Hierarchy MOJE uuu a auqa nasa 22 HBP SOUFGG er rero ce teh e eva 32 Source DVB H 66 e 36 Bit Interleaver Inner Coder add Inner Coder DVB H 67 Inner Interleaver Bit DVB H 68 Inner Interleaver Mode 34 Inner Interleaver Mode DVB H 69 Inner Interleaver Tx Mode 34 Inner Int
77. ted or if the feature is not activated in the receiver the transmitted MPE FEC sections with the parity information data are ignored that is only the payload with the IP datagramms is taken under consideration MPE FEC is optional for DVB H General Settings 4 DVB Configuration and Settings 4 1 gt access the DVB settings select Baseband gt DVB The remote commands required to define these settings are described in chapter 5 Remote control commands on page 44 General Settings gt To access this dialog select Baseband gt DVB gt General DVB H Non hierarchical Number Of Super Frames SFs Number Of Samples Duration 626 688 Samples 0 07 s Sample Rate Data Rate 9 142 857 14 Samples s 16 59 MBit s Filter Clipping Settings Cosine Clip Off This dialog comprises the standard general settings Provided are the following settings State Activates the standard and deactivates all the other digital standards and digital modu lation modes in the same path Remote command SOURce lt hw gt BB DVB STATe on page 47 Set to Default Calls the default settings The values of the main parameters are listed in the following table General Settings Parameter Value State Not affected by Set to default Number of Super Frames 1 Hierarchy Mode Non hierarchical
78. tops signal generation for trigger modes Armed Auto and Armed Retrigger A subsequent internal or external trigger event restart signal generation Example BB DVB TRIG ARM EXEC stops signal generation for trigger modes Armed Auto and Armed Retrigger Usage Event Manual operation See Arm on page 25 SOURce lt hw gt BB DVB TRIGger EXECute The command executes a trigger The internal trigger source must be selected using the command SOUR BB DVB TRIG 5008 INT and a trigger mode other than AUTO must be selected using the command SOUR BB DVB TRIG SEQ Example BB DVB TRIG SOUR INT sets internal triggering BB DVB TRIG SEQ RETR sets Retrigger mode i e every trigger event causes signal gen eration to restart BB DVB TRIG EXEC executes a trigger Usage Event Manual operation See Execute Trigger on page 25 SOURce lt hw gt BB DVB TRIGger EXTernal SYNChronize OUTPut Output enabled for Trigger Source External Enables disables output of the signal synchronous to the external trigger event Parameters lt Output gt Example Manual operation General Commands 0 1 OFF signal calculation starts simultaneously with the external trigger event but because of the instrument s processing time the first samples are cut off and no signal is outputted After elapsing of the internal processing time the
79. y Sets the value for the cut off frequency shift The cut off frequency of the cosine filter can be adjusted to reach spectrum mask requirements Remote command SOURce lt hw gt BB DVB FILTer PARameter COSine COFS on 50 Cut Off Frequency Factor Sets the value for the cut off frequency factor The cut off frequency of the filter can be adjusted to reach spectrum mask requirements Remote command SOURce lt hw gt BB DVB FILTer PARameter LPASs on page 50 SOURce lt hw gt BB DVB FILTer PARameter LPASSEVM on page 50 Sample Rate Variation Sets the sample rate of the signal A variation of this parameter only affects the ARB clock rate all other signal parameters remain unchanged Remote command SOURce lt hw gt BB DVB SRATe VARiation on page 52 Filter Clipping Settings 4 8 2 Clipping Settings To access this dialog select Clipping DVB A Filter Clipping Settings State Clipping Level Clipping Mode Vector i jq M The dialog comprises the settings necessary to configure the clipping DVB H signals may have a quite high crest factor 11dBm because of high ampli tude variations that come along with OFDM signals having a noise like spectrum High crest factors entail two basic problems The nonlinearity of the power amplifier compression causes intermodulation which expands the spectrum spectral regrowth Since the level in the D

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