Digital Standard: DAB / T-DMB
Contents
1. 20702 2 0 02 6 39 SOURce lt hw gt BB DAB FILTer PARameter SPHase a 39 SOURce lt hw gt BB DAB SRATe VARIiation eene nennen nennen nnne 40 Filter Settings SOURce lt hw gt BB DAB FILTer TYPE Type Selects the filter type Parameters lt Type gt RCOSine COSine GAUSs LGAuss CONE COF705 COEQualizer COFequalizer C2K3x APCO25 SPHase RECTangle PGAuss LPASs DIRac ENPShape EWPShape LPASSEVM RST GAUSs if layer mode OFDM COSine if layer mode CCK or PBCC Example BB DAB FILT TYPE RCOS sets the filter type RCOSine Manual operation See Filter on page 18 SOURce lt hw gt BB DAB FILTer PARameter APCO25 lt 25 gt Sets the roll off factor for filter type APCO25 Parameters lt Apco25 gt float Range 0 05 to 0 99 Increment 0 01 RST 0 2 Example BB DAB FILT PAR APCC25 0 2 sets the roll off factor to 0 2 for filter type APCO25 Manual operation Roll Off Factor or BxT on page 18 SOURce lt hw gt BB DAB FILTer PARameter COSine lt Cosine gt Sets the roll off factor for the Cosine filter type Parameters lt Cosine gt float Range 0 to 1 Increment 0 01 RST 0 1 Example BB DAB FILT PAR COS 0 35 sets the roll off factor to 0 35 for filter type Cosine Manual operation Roll Off Fac2. s Save Configuration Save DAB Settings Scrabbled SOLS CHE edi D obere Set Synchronization Settings 21 51 SeLbtoDefault IDE 13 Signal Duration 2 21 Standard Settings 18 UMS 13 Stop Signal Generation 27 21 SLOP POO Ct 21 Sync Output to External Trigger 22 Synchronization mode Synchronization T Transport MES assii eR ret et rers 15 Transport Mode 22 ne cede Deis 16 Trigger ns 417 22 Trigger Delay 24 Triggerilnhibiku kasu ian 24 Trigger Mode n M i Auto Retrigger Single Trigger Source U User Marker AUX I O Settings 28
3. 48 SOURce lt hw gt BB DAB TRIGger OUTPut lt ch gt ONTime 48 SOURce lt hw gt BB DAB TRIGger OUTPut lt ch gt PATTern 48 SOURce lt hlhiw gt BB DAB TRIGger OU TPut lt ch gt PULSe DIVider 49 SOURce lt hw gt BB DAB TRIGger OUTPut lt ch gt PULSe FREQuency 49 SOURce lt hw gt BB DAB TRIGger OUTPut DELay FlXed Fixed 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 The numeric suffix in OUTPut has no significance for this command since the setting always affects every marker Parameters Fixed 0 1 OFF RST 0 Example BB DAB TRIG OUTP DEL FIX ON restricts the marker signal delay setting range to the current range Manual operation See Fix marker delay to current range on page 26 SOURce lt hw gt BB DAB TRIGger OUTPut lt ch gt DELay Delay Defines the delay between the signal on the marker outputs and the start of the signal expressed in terms of samples Command BB DAB TRIGger OUTPut DELay FIXed can be used to restrict the range of values to the dynamic range i e the range withi
4. Pseudo Noise Scrambler On Coder On Interleaver On Filter Cosine Sample Rate Variation 2 048 MHz Trigger Mode Auto Marker Mode Frame Start Clock Internal Remote command SOURce hw BB DAB PRESet on page 32 Save Recall Calls the Save Recall menu From the Save Recall menu the File Select windows for saving and recalling DAB configurations and the File Manager is called DAB configurations are stored as files with the predefined file extension DAB The file name and the directory they are stored in are user definable The complete settings in the DAB menu are saved and recalled Recall DAB Setting Opens the File Select window for loading a saved DAB configura tion The configuration of the selected highlighted file is loaded by press ing the Select button Save DAB Setting Opens the File Select window for saving the current DAB signal configuration The name of the file is specified in the File name entry field the directory selected in the save into field The file is saved by pressing the Save button File Manager Calls the File Manager The File Manager is used to copy delete and rename files and to create new directories Remote command SOURce lt hw gt BB DAB SETTing CATalog on page 33 SOURce lt hw gt BB DAB SETTing LOAD on page 33 SOURce lt hw gt 1 STORe on page 34 SOURce lt h
5. BB DAB TRIGger SEQuence Uu uuu nnne a ash sand dana 45 SOURce lt hw gt BB DAB TRIGger ARM EXECute Stops signal generation for trigger modes Armed Auto and Armed Retrigger A sub sequent internal or external trigger event restart signal generation Example BB DAB TRIG ARM EXEC stops signal generation for trigger modes Armed Auto and Armed Retrigger Usage Event Manual operation See Arm on page 17 Trigger Settings SOURce lt hw gt BB DAB TRIGger EXECute Executes a trigger The internal trigger source must be selected using the command SOUR BB DAB TRIG SOUR INT anda trigger mode other than AUTO must be selected using the command SOUR DAB TRIG SEQ Example Usage Manual operation BB DAB TRIG SOUR INT sets internal triggering BB DAB TRIG SEQ RETR sets Retrigger mode i e every trigger event causes signal gen eration to restart BB DAB TRIG EXEC executes a trigger Event See Execute Trigger on page 17 SOURce lt hw gt BB DAB 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 0 1 ON The signal calculation starts simultaneously with the external trigger event but because of the instrume
6. Manual operation See Trigger Delay on page 24 SOURce lt hw gt BB DAB TRIGger 0BASeband 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 2432 1 samples Increment 1 sample RST 0 samples Example BB DAB TRIG SOUR OBAS sets for path A the internal trigger executed by the trigger signal from the second path path B BB DAB TRIG INH 200 sets a restart inhibit for 200 samples following a trigger event Manual operation See Trigger Inhibit on page 24 SOURce lt hw gt BB DAB TRIGger RMODe Queries the current status of signal generation for all trigger modes with DAB modula tion on Trigger Settings 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 DAB TRIG ARM EXECute armed trigger modes only Example BB DAB TRIG SOUR EXT sets external triggering BB DAB TRIG MODE ARET selects the Armed Retrigger mode BB DAB TRIG RMOD queries the current status of signal generation Response RUN the signal is generated an external trigger was executed UJ
7. Parameters lt gt Manual operation integer Range 1 to 16777215 RST 1 BB DAB TRIG OUTP2 ONT 2000 sets an ON time of 2000 samples for marker 2 See Marker Mode on page 25 SOURce lt hw gt BB DAB TRIGger OUTPut lt ch gt PATTern Pattern Defines the bit pattern used to generate the marker signal Parameters lt Pattern gt 64 bits Marker Settings Example BB DAB TRIG OUTP PATT H39FF0000 32 sets the bit pattern BB DAB TRIG OUTP MODE PATT activates the marker signal according to a bit pattern of the cor respondent marker Manual operation See Marker Mode on page 25 SOURce hw BB DAB TRIGger OUTPut ch PULSe DIVider lt Divider gt Sets the divider for the pulsed marker signal in the setting SOURce BB DAB 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 RST 2 Example BB DAB TRIG OUTP2 PULS DIV 2 sets the divider for corresponding marker signal to the value 2 BB DAB TRIG OUTP2 FREQ queries the resulting pulse frequency of the marker signal Response 66 000 the resulting pulse frequency is 66kHz Manual operation See Marker Mode on page 25 SOURce lt hw gt BB DAB TRIGger OUTPut lt ch gt PULSe FREQuency Queries the pulse frequency of the pulsed marker signal in the set ting BB DAB TRIGger O
8. Suffix Value range Description SOURce lt hw gt 112 available baseband signals OUTPut ch 1 4 available markers R amp S SMBV supports two markers EXTernal lt ch gt 12 external trigger connectors For commands that read out or save files in the default directory the default directory is set using command CDIRectory The examples in this description use the place holder root in the syntax of the command for selecting the internal hard disk of a Windows instrument E for selecting the memory stick which is inserted at the USB interface of a Windows instrument var user for selecting the internal flash card of a Linux instrument usb for selecting the memory stick which is inserted at the USB interface of a Linux instrument General Commands 4 1 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 e Information on regular trigger marker and clock signals as well as filter settings if appropriate General instrument configuration such as configuring networks and remote opera tion Using the common status registers For a description of such tasks see the R amp S Signal Generator operating manual The follo
9. connect it to the instrument and store the files on the instrument s disc in the transfer directory e Store the dabp c files in a network directory connect the instrument to the LAN and process the files from the network directory For detailed description of the available files refer to the manual DAB Streams included in the delivery of the option General Settings for DAB T DMB Signals DAB K354 ETI dab_c R amp S SMU R amp S SMJ and R amp S SMBV only The processing of T DMB DAB stream files dab requires option R amp S SMx K354 DAB transport files are provided on a DVD To access these files use one of the options described above For detailed description of the available files refer to the manual T DMB DAB Streams inclu ded in the delivery of the option Remote command SOURce hw DATA DSELection on page 31 Number of ETI Frames This menu option is available only if the data source is set to ETI File Enters the desired sequence lenght in form of frames Remote command SOURce lt hw gt BB DAB EFRames on page 31 Loop Duration This menu option is available only if the data source is set to ETI File Displays the sequence length Remote command SOURCe lt hw gt BB DAB LDURation on page 32 Transport Mode Selects the transport mode Selecting of transport mode is only enabled for data Source other then ETI files For ETI data sour
10. SOURGeshw BBIDABS TAE 22e usa anqa u a nean xen 34 ESOURceshw BB BAB TMODBDJ ioi rre ed aieo creed Eee vL 35 SOURce lt hw gt BB DAB DATA Data Sets the data source To set the data source to ETI file the existing of et file is required otherwise an error is returned An ETI File is select using the command BB DATA DSELection General Commands Parameters lt Data gt ALLO ALL1 PN15 PN23 ETI ALLO ALL 1 0 or 1 data is generated internally PN15 PN23 PRBS data in accordance with the IUT T with period lengths between 29 1 and 223 1 are internally generated ETI File Uses data from an file The file can be selected via the Select ETI File button RST PN15 Example BB DAB DATA PN15 selects PN15 as data source BB DAB DATA DSELection test eti selects the file test eti as data source BB DAB DATA ETI sets the data source to E TI file Manual operation See Data Source on page 15 SOURce lt hw gt BB DAB DATA DSELection lt DSelection gt Selects the file for the data source selection For a detailed description on the available types refer to Select ET File on page 15 Parameters lt DSelection gt string Example MMEM CDIR root DAB selects the directory for the files BB DAB DATA DSEL test eti selects the file ctesc eti as the data source This file must be in the dire
11. Usage Query only Manual operation See Running Stopped on page 21 SOURce lt hw gt BB DAB TRIGger SLENgth lt SLength gt Defines the length of the signal sequence in frames to be output in the Single trigger mode SOUR BB DAB SEQ SING Parameters lt SLength gt integer Range 1 to 10000 RST 1 Example BB DAB SEQ SING sets trigger mode Single BB DAB TRIG SLEN 200 sets a sequence length of 200 frames The current frame will be output 200 times after the next trigger event Manual operation See Signal Duration on page 21 SOURce lt hw gt BB DAB TRIGger SOURce Source Selects the trigger source Trigger Settings Parameters lt Source gt INTernal OBASeband BEXTernal EXTernal INTernal manual trigger or TRG EXTernal BEXTernal trigger signal on the TRIGGER 1 2 connector OBASeband trigger signal from the other path RST INTernal Example SOURCe1 BB DAB TRIGger SOURce EXTernal sets external triggering via the TRIGGER 1 connector Manual operation See Trigger Source on page 22 SOURce lt hw gt BB DAB TRIGger EXTernal lt ch gt DELay Delay Specifies the trigger delay expressed as a number of samples for external triggering Parameters Delay float Range 0 0 to 65535 0 Increment 0 01 RST 0 0 Example BB DAB TRIG SOUR EXT sets an external trigger via the TRIGGER 1 connector BB DAB TRIG DEL 50 sets a delay of 50 symbol
12. cerne e eh Che rete eae euren ene sasata 33 SOURceshw BB DAB SETTing ees ertt etr naro rec ck 33 SOURce lt hw gt BB DAB ISET TING STORE uuu u una a en aeg oen tha cra ena 34 gt Cope ck E 34 SOURceshw BB DAB SRATe VARIiatiOn 12 xor tr ER ee 40 SOURce lt hw gt BB DAB STATe SOURceshw gt BB DAB tr haec ete bes cs oa as e om AP Ia Rud 35 SOURceshw 5 BB DAB TRIGger ARM EXE GuUte retener eerie ino ree dat 40 SOURceshiw BB DAB TRIGger EXECute 2 reir eterne re rre err eie re ot d 41 SOURce hw BB DAB TRIGger EXTernal SYNChronize OUTPut 41 8 0 lt gt 5 42 lt gt 42 SOURce shw BB DAB TRIGger OUTPut DELay F IXed 5 taret rnnt rna i inh 46 8 0 lt gt gt 46 SOURce hw BB DAB TRIGger OUTPut ch DELay MAXimum 46 SOURc
13. in the MSC It is not applied to the FIC The time interleaving process covers 16 CIFs 24 ms each This results in an overall processing delay of 384 ms General Settings for DAB T DMB Signals 3 DAB T DMB User Interface Satellite Navigation To access the DAB dialog select Baseband gt DAB T DMB GPS Broadcast Standards XM RADIO DVB 3 1 General Settings for DAB T DMB Signals The dialog is split into three main sections for configuring the standard The upper sec tion is where the DAB digital standard is enabled and reset In the Data Source sec tion the data source file and the ETI file can be selected and source file relevant parameters can be set Further buttons open dialogs to configure the system and to set filter trigger and clock parameters DAB T DMB A Select ETI File Number Of ETI Frames 1 Frames v Loop Duration 0 024 s Transport Mode System Configuration 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 DAB STATe on page 34 Set To Default Calls the default settings The values of the main parameters are listed in the following table Save DAB Settings File Manager General Settings for DAB T DMB Signals Parameter Value State Not affected by Set to default Data Source PN15 Transport Mode l
14. parameters Store string Example BB DAB SETT STOR test DAB stores the current DAB settings into file test Usage Setting only Manual operation See Save Recall on page 14 SOURce lt hw gt BB DAB SETTing STORe FAST Fast Determines whether the instrument performs an absolute or a differential storing of the settings Enable this function to accelerate the saving process by saving only the settings with values different to the default ones Note This function is not affected by the Preset function Parameters Fast 0 1 OFF RST 1 SOURce hw BB DAB 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 DAB STATe ON Manual operation State on page 13 4 2 System Configuration SOURce lt hw gt BB DAB TMODe lt Tmode gt Selects the transport mode Depending on the transport mode selected signal with dif ferent sequence length will be generated Transport mode selection is not enabled for data source files transport mode is a read only field for these files The transport mode is read from the file Parameters lt Tmode gt transport mode i e sequence length 96 ms Il transport mode Il i e sequence length 24 ms transport mode i e sequence length 24 ms I
15. turning on the standard the MSC values are not valid during the first 16 CIFs because of the time interleaver s depth Remote command SOURce lt hw gt BB DAB ILEaver STATe on page 3 3 Filter Settings access this dialog select Main Menu gt Filter DAB T DMB Filter Settings Filter Filter Cosine Roll Off Factor 0 10 Cut Off Frequency Shift 0 10 Sample Rate Variation 2 048 000 000 MHz The dialog comprises the settings necessary to configure the baseband filter Filter Selects the baseband filter Remote command SOURce lt hw gt BB DAB FILTer TYPE on page 37 Roll Off Factor or BxT Sets the filter parameter Trigger Marker Clock Settings 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 DAB FILTer PARameter APC025 On page 37 SOURce lt hw gt BB DAB FILTer PARameter COSine on page 37 SOURce lt hw gt BB DAB FILTer PARameter RCOSine On page 39 SOURce lt hw gt BB DAB FILTer PARameter PGAuss on page 39 SOURce lt hw gt BB DAB FILTer PARameter GAUSs on page 38 SOURce lt hw gt BB DAB FILTer PARameter SPHase on page 39 Cut Off Frequency Shift available for filter parameter Cosine only Sets the value for the cut off f
16. with data signals Audio and data signals are considered to be service components which can be grouped together to form services The DAB system transmission frame consists of three different channels Main Service Channel MSC Transport Mechanisms e Fast Information Channel FIC Synchronization Channel 2 3 1 Transmission channels The MSC is a time interleaved data channel used to carry the audio and data service components together with possible supporting and additional data service compo nents The MSC is divided into a number of sub channels Each of the sub channels is individually convolutionally coded with equal or unequal error protection Each sub channel may carry one or more service components The FIC is a non time interleaved data channel with fixed equal error correction FIC carries information about the organization of the MSC sub channels such as informa tion on the multiplex structure and when necessary its reconfiguration Optionally FIC may include service information conditional access management information and data Service The Synchronization Channel provides a phase reference and is used internally for demodulator functions such as transmission frame synchronization automatic fre quency control transmitter identification and channel state estimation The Synchronization channel the Fast Information Channel and the Main Service Channel form a transmission frame see figure 2 3 The MSC occup
17. 2 is abbreviated as R amp S WinIQSIM2 the license types 02 03 07 11 13 16 12 are abbreviated as xx Contents MB gt e astuta usu 5 1 1 Documentation Overview LULU 5 1 2 Conventions Used the Documentation enne nnn 6 1 21 Typographical Conventiofis IL ete era habs 6 1 2 2 Notes on Screenshots uus ice ni one ter dee e co X Red e ERR Le 7 1 2 3 Naming of Software 7 2 I trod 6tI 0 L Sas 8 241 u u u q Runa ua Qasa i ete rene ERES 8 2 2 Transmission SySt m IILI LII II I sasa nennen ennt nenne nnn nnn nennen 9 2 3 Transport Mechanismis nt eheu ran Ru Rx x RRRRRRRRRRKARNRARA 9 2 3 1 TRANSMISSION channels orci e edt in veu v t ga e t E o s 10 2 9 2 Transport iic otc c cd onte n dd ec ente e n dei 11 2 4 Pseudo Noise PN Scrambling U u u 11 2 5 Convolutional Coding u u u u 11 26 Timelnterieaving erret peine 12 3 DAB T DMB User Interface 13 3 4 General Settings for DAB T DMB Signals eese 13 3 2 System C
18. 4 5 Global Settings The buttons in this section lead to dialogs for general trigger clock and mapping set tings Global Trigger Clock Settings Calls the Global Trigger Clock Input Settings dialog This dialog is used among other things for setting the trigger threshold the input impe dance and the polarity of the clock and trigger inputs The parameters in this dialog affect all digital modulations and standards and are described in chapter Global Trigger Clock Input Settings in the Operating Manual User Marker AUX Settings Calls the User Marker AUX I O Settings dialog used to map the connector on the rear of the instruments See also User Marker AUX I O Settings in the Operating Manual 4 Remote control commands The following commands are required to perform signal generation with the DAB T DMB options in a remote environment We assume that the R amp S Signal Generator has already been set up for remote operation in a network as described in the R amp S Signal Generator 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 Signal Generator operating manual Common Suffixes The following common suffixes are used in remote commands Placeholder root
19. 7 2 te iit BR C eed pad 27 eee T 18 Conventions SCPI commands s Current Range Without Recalculation Cut Off Frequency Factor EN Cut Off Frequency Shift D 15 Pata 500665 15 Deactivate DAB Standard 13 Default Settings PNE DiVIdGE 2 20 Documentation overview 2 5 E Execulte Triggel eroe nr rrr posee re sassa qha 17 22 F File MAN QGP rnnt mer ret 14 Filter Parameter uu naaie d 18 Filter Type n u t Qa 18 Filtering Setl gsS u uuu ua teta 18 Filtering rent rte tec t tenis 18 Fix marker delay to current range 26 G Global Trigger Clock Settings 28 asi T 18 L Load DAB Settings suu uuu e roe Rie tn 14 Loop Duration ierra ort REI e 16 M Marke ee ae 17 Marker ete e een nad 25 Marker x Delay mere rere 26 Measured external clock u mmn 27 N Number of Frames tec caccia 16 Nyquist DTE EOM 18 Open Manager rimissi 14 P PNiScrambler rr reiner rre ran 17 R Recall Configuration Recall DAB Settings T ROVOM
20. DAB T DMB Digital Standard for R amp S9Signal Generators Operating Manual HII 1171 5531 12 14 5 gt o 8 o 9 o This document describes the following software options R amp S SMBV K53 K353 K354 1415 8154 xx 1415 8702 02 1415 8783 02 R amp S SMU K53 K353 K354 1400 6209 02 1408 8652 02 1408 8717 02 R amp S AMU K53 1402 9957 02 R amp S SMATE K53 1400 6409 02 R amp S SMJ K53 K353 K354 1400 6309 02 1409 3525 02 1409 3583 02 This manual version corresponds to firmware version FW 3 20 281 xx and later of the R amp S SMBV100A FW 2 20 360 142 and later of the R amp S SMU200A R amp S9SMATE200A R amp S9SMJ100A and R amp S AMU200A 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 amp Co KG Trade names are trademarks of the owners The following abbreviations are used throughout this manual R amp S SMBV100A is abbreviated as R amp S SMBV R amp S SMU200A is abbreviated as R amp S SMU R amp S AMU200A is abbreviated as R amp S AMU R amp S SMATE200A is abbreviated as R amp S SMATE R amp S SMJ100A is abbreviated as R amp S SMJ R amp S WinIQSIM
21. E ER OE Re RR 31 SOURceshw BB DAB EF RAatmes cio rtc ror nter 31 SOURceshiw BB DAB ETIGCATalog roter tete rer tree Pene reo E cR 32 SOURceshw BB DAB FILTer PARameter APQCOD5 opener ek ht a Ere en pa eod Ee ex aswa 37 SOURce hw BB DAB FILTer PARameter COSine sessi rennen nenne 37 SOURce hw BB DAB FILTer PARameter COSine COFS 37 SOURceshw BB DAB FIETer PARametetr GAUSS correre rr a ERE 38 SOURce shw BB DAB FILTer PARameter L PASS ener ertt 38 5 lt gt 5 2 38 SOURce lt hw gt BB DAB FILTer PARameter PGAuss SOURce lt hw gt BB DAB FILTer PARameter RCOSine SOURceshw BB DAB FILTer PARameterSPHase orte ttr treten ai nna pap SOURceshw T BB DAB FIETer TYPE uu SOURceshw BB DAB IEEaver STATS rtt terrere tren rt ere nen SOURceshiw BB DAB EDURGUOm ie roti terrre eter eraat cos cre 32 SOURceshw BB DAB PNSCrambler S WAT 6 iso i tot t b a E 36 SOURce lt hw gt BB DAB PRESet i SOURce lt hw gt BB DAB SET Ting CATalog irent dh ttt tbe ehe 33 SOURsceshw T BB DAB SETETing DEl ete D rector nt cona
22. Fs because of the time interleaver s depth Manual operation lnterleaver on page 18 SOURce lt hw gt BB DAB PNSCrambler STATe State Activates deactivates the PN scrambler This feature is enabled for ETI data source files only Parameters State 0 1 OFF RST 0 Example BB DAB PNSC STAT 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 17 Filter Settings SOURceshw BBIDAEFIET amp t TYPE oiiaaie ipaa iadaaa ania aaae 37 SOURce hw BB DAB FILTer PARameter APCOJ25 essere 37 SOURce hw BB DAB FILTer PARameter COSine essen 37 SOURce lt hw gt BB DAB FILTer PARameter COSine COFS u u 37 5 lt gt 55 38 lt gt 55 38 5 lt gt _ 38 lt gt 5 39 5 lt gt
23. Il 1 and IV are defined to allow the system to be used for different network configurations and a range of operat ing frequencies Depending on the transport mode the transmission frame has differ ent organization and length i e the transmission frame is specific to the four transmis sion modes The table below gives the transmission frame duration and the number of FIBs and CIFs which are associated with each transmission frame for the four transport modes Table 2 1 Transmission Mode Characteristics Transport Duration of Number of Number of Number of car Carrier Spac Mode transmision FIBs per trans CIFs per trans riers ing frame mission frame mission frame 96 ms 12 4 1536 1 KHz I 24 ms 3 1 384 4 KHz II 24 ms 4 1 192 8 KHz IV 48 ms 6 2 768 2 KHz 2 4 Pseudo Noise PN Scrambling Prior to convolution encoding the transmitted signal can be scrambled by a modulo 2 addition with a pseudo random binary sequence PRBS The PRBS polynomial is of degree 9 and specified as P X x x5 1 The initialization word is applied in such a way that the first bit of the PRBS is obtained when the outputs of all shift register stages are set to value 1 2 5 Convolutional Coding The process of convolution coding is applied at the output of each PN scrambler The channel encoding process is based on punctured convolutional coding which allows both equal and unequal error protection Unequal error protection UEP is designed for a
24. UTPut MODE PULSe The pulse frequency is derived by dividing the symbol rate by the divider The divider is defined with com mand BB DAB TRIG OUTP PULS DIV Return values lt Frequency gt float Example BB DAB TRIG OUTP2 PULS DIV 2 sets the divider for the corresponding marker signal to the value 2 BB DAB TRIG OUTP2 MODE PULS enables the pulsed marker signal BB DAB TRIG OUTP2 FREQ queries the resulting pulse frequency of the marker signal Response 66 000 the resulting pulse frequency is 66kHz Usage Query only Manual operation See Marker Mode on page 25 Clock Settings 4 6 Clock Settings This section lists the remote control commands necessary to configure the clock ESOURceshw9BBISAB CEOGCEMODE rt Erud eiae rt ERE Rer uen cina nas 50 5 lt gt 1222 1 4 040066 nnne 50 SOURcesiw BB DAB CLOCK SOURG aee etit kr e unte rat erts 51 SOURce hw BB DAB CLOCKk SYNChronization EXECute 51 SOURce lt hw gt BB DAB CLOCk SYNChronization MODE 51 SOURce lt hw gt BB DAB CLOCk MODE lt Mode gt Enters the type of externally supplied clock BB DAB CLOCk SOURce EXTernal When MSAM mode is used a multiple of the sample clock is supplied and the clock is derived internally from it Th
25. V transport mode IV i e sequence length 48 ms RST l Example BB DAB DATA PN15 selects PN15 as data source BB DAB TMOD II sets the transport mode to Tx Mode Il i e sequence length 24ms Manual operation See Transport Mode on page 16 System Configuration This subsystem contains commands regarding the system configuration of the DAB standard E SOURce hw EBBIDAB CODerm STAT aces LU te nne echter 35 ESOURce hw TBB IBAB IEEaver STATe itta te Eee huy n Saa o Era kn iue 36 SOURce hw BB DAB PNSCrambler STATe eese nene 36 SOURce lt hw gt BB DAB CODer STATe State Activates deactivates the coder This feature is enabled for ETI data source files only Parameters State 0 1 OFF RST 1 Example BB DAB CODer STATe OFF deactivates the coder The number of bits is now fetched from the scrambler and therefore from data source So please keep in mind that the data framing is not valid anymore 4 3 Filter Settings Manual operation See Coder on page 18 SOURce lt hw gt BB DAB ILEaver STATe State Activates deactivates the interleaver This feature is enabled for ETI data source files only Parameters State 0 1 OFF RST 0 Example BB DAB ILE STAT ON activates the outer interleaver After turning on the standard the MSC values are not valid during the first 16 CI
26. ain unchanged If the sampling rate in the frame configuration menu is changed this parameter is reset to the chosen sampling rate Parameters lt Variation gt float Range 4E2 to 3E6 Increment 0 001 RST 2 048E6 Example BB DAB SRAT VAR 40 MHz sets the output sample rate to 40 MHz Trigger Settings This section list the remote control commands necessary to configure the trigger set tings SOURce lt hw gt BB DAB TRIGger ARM EXECute nter 40 E SOURce lt shw gt l BB DAB TRIGger EXECGute ULU Lu enne 41 SOURce lt hw gt BB DAB TRIGger EXTernal SYNChronize OUTPut 41 SOURce lt hw gt BB DAB TRIGger OBASeband DELay a 42 SOURce lt hw gt BB DAB TRIGger OBASeband lNHlibit uuu u 42 5 lt gt 42 aaa eade gr eco 43 SOURce hw EFBB DAB TRIGger SOUlRCe 2 2 accen rri 43 5 lt gt lt gt 44 SOURce lt hw gt BB DAB TRIGger EXTernal lt ceh gt INHIibit u 44 SOURce hw
27. al EXTernal INTernal The internal clock reference is used EXTernal The external clock reference is supplied to the CLOCK connec tor Commands BB DAB CLOCk MODE and MULTiplier are used to enter the type of the external clock RST INTernal Example BB DAB CLOC SOUR EXT selects the external clock source The clock is supplied via the CLOCK connector BB DAB 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 DAB CLOC MULT 12 the multiplier for the external clock rate is 12 Manual operation See Clock Source on page 27 SOURce lt hw gt BB DAB CLOCk SYNChronization EXECute Performs automatically adjustment of the instrument s settings required for the syn chronization mode set with the command BB DAB SYNC MODE Example BB DAB CLOC SYNC MODE MAST the instrument is configured to work as a master one BB DAB CLOCK SYNC EXEC all synchronization s settings are adjusted accordingly Usage Event Manual operation See Set Synchronization Settings on page 27 SOURce lt hw gt BB DAB CLOCk SYNChronization MODE Mode Selects the synchronization mode This parameter is used to enable generation of very precise synchronous signal of sev eral connected R amp S SMBVs Note If several instruments are connected the connecting cables from the master instrument to the slave one and bet
28. ation in the Armed Auto and Armed trigger modes Trigger Marker Clock Settings Signal generation can be restarted by a new trigger internally with Execute Trigger or externally Remote command SOURce hw BB DAB TRIGger ARM EXECute on page 40 Execute Trigger Executes the trigger manually A manual trigger can be executed only if an internal trig ger source and a trigger mode other than Auto have been selected Remote command SOURce lt hw gt BB DAB TRIGger EXECute on page 41 Trigger Source Selects trigger source This setting is effective when a trigger mode other than Auto has been selected Internal The trigger event is executed by Execute Trigger Internal Baseband A B two path instruments The trigger event is the trigger signal from the second path e External Trigger 1 2 The trigger event is the active edge of an external trigger signal supplied at the TRIGGER 1 2 connector Use the Global Trigger Clock Settings dialog to define the polarity the trigger threshold and the input impedance of the trigger signal Remote command SOURce lt hw gt BB DAB TRIGger SOURce on page 43 Sync Output to External Trigger enabled for Trigger Source External Enables disables output of the signal synchronous to the external trigger event For R amp S SMBV instruments For or two or more R amp S SMBVs configured to
29. ce files this field is read only The trans port mode is read from the file Remote command SOURce hw BB DAB DATA on page 30 SOURce lt hw gt BB DAB TMODe on page 35 System Configuration Calls the System Configuration menu for configuring the DAB system The menu is described in chapter 3 2 System Configuration on page 17 Remote command n a Filter Calls the menu for setting baseband filtering The current filter is displayed next to the button The menu is described in chapter 3 3 Filter Settings on page 18 Remote command n a System Configuration Trigger Marker Clock Accesses the dialog for selecting the trigger mode and trigger source for configuring the marker signals for setting the time delay of an external trigger signal and for selecting the clock source This menu is described in chapter 3 4 Trigger Marker Clock Settings on page 19 The currently selected trigger mode and trigger source are displayed next to the but ton Remote command n a Execute Trigger Executes the trigger manually A manual trigger can be executed only if an internal trig ger source and a trigger mode other than Auto have been selected Remote command SOURce lt hw gt BB DAB TRIGger EXECute on page 41 Arm Stops signal generation manually This button appears only with Running signal gen eration in the Armed Auto and Armed Retrig
30. ctory lt root gt DAB and have the file extension eti BB DAB DATA ETI selects the ETI files as the data source Manual operation See Select ETI File on page 15 SOURce lt hw gt BB DAB EFRames lt EFrames gt Sets the desired sequence lenght in form of ETI frames This command is enabled only if the data source is set to ETI File The allowed minimum value of this parameter deppends on the transport mode of the ETI file For istanse for transport mode with 96 ms transmission frame duration mini mum 4 frames must be selected General Commands Parameters lt EFrames gt float Range 1 to 10000 Increment 1 Example BB DAB DATA DSEL test eti selects the file test eti as the data source This file must be in the directory D DAB and have the file extension eti BB DAB DATA ETI selects the ETI files as the data source BB DAB EFR 50 sets the number of the transmitted ETI frames to 50 Manual operation See Number of ETI Frames on page 16 SOURce hw BB DAB ETI CATalog Reads out the files with ETI File settings in the default directory The default directory is set using command MMEM CDIRectory Only files with the file extension eti will be listed Return values Catalog string Example MMEM CDIR root DAB sets the default directory to root DAB BB DAB ETI CAT reads out all the files with ETI file settings in the default d
31. e File This command deletes the selected file with DAB 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 DAB will be deleted Setting parameters File string Example BB DAB SETT DEL lt root gt DAB deletes the specified file with DAB settings Usage Setting only Manual operation See Save Recall on page 14 SOURce lt hw gt BB DAB SETTing LOAD Load This command loads the selected file with DAB settings The directory is set using command MMEM CDIRectory A 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 DAB will be loaded General Commands Setting parameters lt Load gt string Example BB DAB SETT LOAD DAB 1 loads file DAB Usage Setting only Manual operation See Save Recall on page 14 SOURce lt hw gt BB DAB SETTing STORe Store This command stores the current DAB settings into the selected file The directory is set using command MMEM CDIRectory A path can also be specified in which case the files in the specified directory are read Only the file name has to be entered DAB settings are stored as files with the specific file extensions DAB Setting
32. e hw BB DAB TRIGger OUTPut ch DELay MINimum seen 47 SOURce lt hw gt BB DAB TRIGger OUTPut lt ch gt MODE SOURce lt hw gt BB DAB TRIGger OUTPut lt ch gt OFFTime ESOURce lt hw gt BB DAB TRIGoer OUTPutSeeh s ONTIIme u l rp Rheni sama aq 48 5 lt gt lt gt 220 0 4 04004000 48 5 lt gt lt gt 5 2 49 SOURce lt hw gt BB DAB TRIGger OUTPut lt ch gt PULSe FREQUENCY 49 8 lt gt 42 SOURce lt hw gt BB DAB TRIGger SLENgbth SOURce lt hw gt BB DABAIRIGger SOURCE tre ade etc SOURce lt hw gt BB DAB TRIGger EXTernal lt ch gt DELay 44 SOURce hw BB DAB TRIGger EXTernal ch INHibit eene 44 SOURCeshw EBB DABETRIGger SEQUenC6 eorr e a Eee ter iod 45 Index A Activate DAB Standard 13 Atm Eggel sete uuu A aaa 17 21 B 18 Baseband TGR rest case sien ver tree cee ieee aes 18 iiie idee o eene e xen cs 27 Clock Multipliet 2 ctr rr t eren nene 2
33. e Manual Data sheet and specifications Links to useful sites on the R amp S internet Online Help The Online Help is embedded in the instrument s firmware It offers quick context sen sitive access to the complete information needed for operation and programming The online help contains help on operating the R amp S Signal Generator and all available options Quick Start Guide The Quick Start Guide is delivered with the instrument in printed form and in PDF for mat on the Documentation CD ROM It provides the information needed to set up and start working with the instrument Basic operations and an example of setup are descri bed The manual includes also general information e g Safety Instructions Operating Manuals The Operating Manuals are a supplement to the Quick Start Guide Operating Manuals are provided for the base unit and each additional software option These manuals are available in PDF format in printable form on the Documentation CD ROM delivered with the instrument In the Operating Manual for the base unit all instrument functions are described in detail Furthermore it provides an introduction to remote control and a complete description of the remote control commands with pro gramming examples Information on maintenance instrument interfaces and error messages is also given In the individual option manuals the specific functions of the option are described in detail For additional inf
34. e multiplier is entered with the command BB DAB CLOCk MULTiplier For two path instruments the only numerical suffix allowed for SOURCe is 1 since the external clock source is permanently allocated to path A Parameters Mode SAMPIe MSAMple RST SAMPIe Example BB DAB CLOC MODE MSAM sets the type of externally supplied clock Manual operation See Clock Mode on page 27 SOURce lt hw gt BB DAB CLOCk MULTiplier lt Multiplier gt Specifies the multiplier for clock type Multiple Sample BB DAB CLOCk MODE MSAMp in the case of an external clock source For two path instruments the only numerical suffix allowed for SOURCe is 1 since the external clock source is permanently allocated to path A Parameters lt Multiplier gt integer Range 1 to 64 Increment 1 RST 4 Example BB DAB CLOC SOUR EXT selects the external clock source BB DAB 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 DAB CLOC MULT 12 the multiplier for the external clock rate is 12 Manual operation See Clock Multiplier on page 27 Clock Settings SOURce lt hw gt BB DAB CLOCk SOURCce Source 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 Parameters lt Source gt INTern
35. em The DAB network has three main parts the service or service component provider the multiplex or ensemble provision and the transmission network provision The interfaces between these there blocks are scope of ETSI standards The STI Ser vice Transport Interface is defined to provide a standardized way of transporting DAB service components service information and control messages in a DAB collection network The Ensemble Transport Interface ETI links the Multiplexer of the Ensemble Provider with the transmitters of the Transmission Network Provider 2 2 DAB Transmission System The following block diagramm shows the components of the DAB transmission system packet mode SI DAB audio frame 1 I packet mode data I stream mode da sit S AB transmission Srt ETI CIF Interleaved Frames FIC Fast Chanennel OFDM Orthogonal frequency TII Transmitter Identification DAB Digital Audi Broadcast FIB hfonnation Block division multiple xing Information Ensemble Transport Interface MSC Main Serice Channel SI Senice hfonnation Pseudo Noise Fig 2 2 Components of the Transmission System DAB The DAB transmission signal is defined as the sum of two signals the main signal s t and an optional signal sTII t as illustrated in the figure above 2 3 Transport Mechanisms The DAB system is designed to carry several digital audio signals together
36. ent Range without Recalculation on page 26 SOURce hw BB DAB TRIGger OUTPut ch MODE Mode Defines the signal for the selected marker output Parameters lt Mode gt Example Manual operation Marker Settings RESTart FRAMe PULSe PATTern RATio TRIGger RESTart A marker signal is generated at the start of every sequence length loop Restart mode is available only for ETI data source 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 TRIGger A received internal or external trigger signal is output at the marker connector RST FRAMe BB DAB TRIG OUTP MODE FRAME selects the frame for the correspondent marker signal See Marker Mode on page 25 SOURce lt hw gt BB DAB TRIGger OUTPut lt ch gt OFFTime lt OffTime gt SOURce hw BB DAB TRIGger OUTPut ch ONTime lt gt Sets the number of samples in a period ON time OFF time during which the marker signal in setting SOURce BB DAB TRIGger OUTPut MODE RATio on marker outputs is ON
37. ger trigger modes Signal generation can be restarted by a new trigger internally with Execute Trigger or externally Remote command SOURce lt hw gt BB DAB TRIGger ARM EXECute on page 40 3 2 System Configuration The System Configuration menu allows configuration of the DAB system amp DAB T DMB System Configu PN Scrambler Coder Interleaver lt q lt lt 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 that has a positive effect on the transmitted RF spectrum This feature is enabled for ETI data source files only Remote command SOURce lt hw gt BB DAB PNSCrambler STATe on page 36 Filter Settings Coder Activates deactivates the coder The coder applies a Reed Solomon error correction code to the PRBS data stream This feature is enabled for ETI data source files only If the convolutional encoder is switched off the number of bits delivered from the coder in enabled state is now fetched from the scrambler and therefore from data source So please keep in mind that the data framing is not valid anymore Remote command SOURce lt hw gt BB DAB CODer STATe on page 35 Interleaver Activates deactivates the convolutional interleaver This feature is enabled for ETI data source files only After
38. gering 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 command SOURce lt hw gt BB DAB TRIGger EXTernal SYNChronize OUTPut on page 41 Trigger Delay 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 DAB TRIGger EXTernal ch DELay on page 44 SOURce lt hw gt BB DAB TRIGger OBASeband DELay on page 42 Trigger Inhibit Sets the duration for inhibiting a new trigger event subsequent to triggering The input is to be expressed in samples In the Retrigger mode every trigger signal causes signal generation to restart This restart is inhibited for the specified number of samples This parameter is only available on external triggering or on internal triggering via the second path For two path instruments the trigger inhibit can be set separately for each of the two paths Remote command SOURce lt hw gt DAB TRIGger EXTernal ch INHibit on page 44 SOURce lt hw gt BB DAB TRIGger OBASeband INHibit on page 42 3 4 2 Marker Mode The marker output signal for synchro
39. ield which opens when ON OFF Ratio is selected m 1 Samples Remote command SOURce hw BB DAB TRIGger OUTPut lt ch gt ONTime on page 48 SOURce hw BB DAB TRIGger OUTPut lt ch gt OFFTime on page 48 Remote command SOURce lt hw gt BB DAB TRIGger OUTPut ch MODE on page 47 3 4 3 Marker Delay The delay of the signals on the MARKER outputs is set in the Marker Delay section Trigger Marker Clock Settings The R amp S SMBV supports only two markers Marker x Delay Enters the delay between the marker signal at the marker outputs and the start of the frame or slot The input is expressed as a number of symbols samples If the setting Fix marker delay to dynamic range is enabled the setting range is restricted to the dynamic range In this range the delay of the marker signals can be set without restarting the marker and signal Remote command SOURce lt hw gt BB DAB TRIGger OUTPut lt ch gt DELay page 46 Current Range without Recalculation Displays the dynamic range within which the delay of the marker signals can be set without restarting the marker and signal The delay can be defined by moving the setting mark Remote command SOURce lt hw gt DAB TRIGger OUTPut ch DELay MINimum on page 47 SOURce lt hw gt DAB TRIGger OUTPut ch DELay MAXimum on page 46 Fix marker delay to cur
40. ies the major part of the transmission frame Transmission Frame non time interleave time interleaved Synchronization Chanel en F ks Fl 1 ast Information Blocks FIBs Common Interleaved Frame s Fig 2 3 DAB transmission frame Each transmission frame is divided into a sequence of OFDM symbols each symbol consisting of a number of carriers The Fast Information Block FIB and the Common Interleaved Frame CIF are intro duced in order to provide transmission mode independent data transport packages associated with the FIC and MSC respectively The data carried in the MSC is divided at source into regular 24 ms bursts corre sponding to the sub channel data capacity of each CIF The CIF contains 55 296 bits divided at 864 capacity units 64 bits each Fast Information Block FIB is a data burst of 256 bits The sequence of FIBs is car ried by the Fast Information Channel FIC The structure of the FIB is common to all transmission modes DAB T DMB Introduction The synchronization channel symbols comprise the null symbol and the phase refer ence symbol The null symbols are also used to allow a limited number of OFDM carri ers to convey the Transmitter Identification Information TII 2 3 2 Transport Modes Transmission mode is specific set of transmission parameters e g number of carriers OFDM symbol duration Four transmission modes i e
41. ing time interleaving and or pseudo noise scrambling The R amp S Signal Generator allows you to choose between different data sources You can either use some of the predefined data sources two different pseudo noise sequences fixed all 0 fixed all 1 or you can use your own ETI Ensemble Trans port Interface compliant source file To create an ETI compliant source file you can for instance use the R amp S STI Ensemble Mux DM001 or the R amp S ETI Builder However the ETI source file must fulfill some prerequisites The DAB system is designed for delivery of high quality digital audio programs and data services for mobile portable and fixed reception from terrestrial or satellite trans mitters in the Very High Frequency VHF Ultra High Frequency UHF frequency bands as well as for distribution through cable networks The DAB system is designed to provide spectrum and power efficient techniques in ter restrial transmitter network planning known as the Single Frequency Network SFN and the gap filling technique The DAB system is suitable for satellite as well as hybrid mixed terrestrial satellite broadcasting using a simple nearly omni directional receiv ing antenna The DAB system meets the required sharing criteria with other radio com munication services DAB Network The figure bellow illustrates the outline of a DAB network STI ETI n x 64kbit s 2048 khit s Fig 2 1 DAB network DAB Transmission Syst
42. irec tory Response test eti dab eti the files test eti and dab eti are available Usage Query only SOURce lt hw gt BB DAB LDURation Queries the sequence length of ETI file loop duration Return values lt Lduration gt float Example BB DAB LDUR queries the loop duration Usage Query only Manual operation See Loop Duration on page 16 SOURce lt hw gt BB DAB PRESet Sets the parameters of the digital standard to their default values RST values speci fied for the commands General Commands Not affected is the state set with the command SOURce lt hw gt BB DAB STATe Example SOURCe1 BB DAB PRESet Usage Event Manual operation See Set To Default on page 13 SOURce hw BB DAB SETTing CATalog Reads out the files with DAB settings in the default directory The default directory is set using command MMEM CDIRectory A path can also be specified in which case the files in the specified directory are read Only files with the file extension DAB will be listed Return values Catalog string Example MMEM CDIR root DAB sets the default directory to lt root gt DAB BB DAB SETT CAT reads out all the files with DAB settings in the default directory Response DAB 1 DAB 2 the files DAB 1 and DAB 2 are available Usage Query only Manual operation See Save Recall on page 14 SOURce lt hw gt BB DAB SETTing DELet
43. mmand SOUR BB DAB TRIG ARM EXEC and started again when a 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 DAB TRIG SLEN Every subsequent trigger event causes a restart Signal generation is stopped with command SOUR BB DAB TRIG ARM EXEC and started again when a trig ger event occurs RST AUTO Example BB DAB 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 21 4 5 Marker Settings This section lists the remote control commands necessary to configure the markers SOURce lt hw gt BB DAB TRIGger OUTPut DELay FIXed 46 5 lt gt lt gt 1 1 1 46 SOURce lt hw gt BB DAB TRIGger OUTPut lt ch gt DELay MAXimum 46 Marker Settings SOURce lt hw gt BB DAB TRIGger OUTPut lt ch gt DELay MINimum 47 SOURce hw BB DAB TRIGger OUTPut ch MODE essen 47 SOURce lt hw gt BB DAB TRIGger OUTPut lt ch gt OFFTimes
44. mprehensive descriptions and background informa tion The latest versions are available for download from the Rohde amp Schwarz website at http www rohde schwarz com appnotes 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 dialog boxes menus options buttons and softkeys are enclosed by quotation marks KEYS Key names are written in capital letters 1 2 2 1 2 3 Conventions Used in the Documentation Convention Description 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 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 situations The screenshots usually show a fully equipped product that is with all options instal led Thus s
45. n which a delay of the marker signals can be set without restarting the marker and signal Parameters Delay float Range 0 to 2 32 1samples RST 0 Example BB DAB TRIG OUTP DEL 16000 sets a delay of 16000 samples Manual operation See Marker x Delay on page 26 SOURce hw BB DAB TRIGger OUTPut ch DELay MAXimum Queries the maximum marker delay for setting BB DAB TRIG OUTP DEL FIX ON Return values Maximum float Marker Settings Example BB DAB TRIG OUTP DEL FIX ON restricts the marker signal delay setting range to the dynamic range BB DAB 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 Current Range without Recalculation on page 26 SOURce lt hw gt BB DAB TRIGger OUTPut lt ch gt DELay MINimum Queries the minimum marker delay for setting BB DAB TRIGger OUTPut DELay FIXed ON Return values Minimum float Example BB DAB TRIG OUTP DEL FIX ON restricts the marker signal delay setting range to the dynamic range BB DAB TRIG OUTP DEL MIN queries the minimum of the dynamic range Response 0 the minimum for the marker delay setting is O symbols Usage Query only Manual operation See Curr
46. nizing external instruments is configured in the marker settings section Marker Mode Trigger Marker Clock Settings The R amp S SMBV supports only two markers Marker Mode Selects a marker signal for the associated MARKER output Frame Start Pulse Pattern On Off Ratio Restart A marker signal is generated at the start of each ARB sequence Frame 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 lt hw gt BB DAB TRIGger OUTPut ch PULSe DIVider on page 49 SOURce hw BB DAB TRIGger OUTPut ch PULSe FREQuency on page 49 Pattern A marker signal that is defined by a bit pattern is generated The pat tern has a maximum length of 32 bits and is defined in an input field which opens when pattern is selected Remote command SOURce lt hw gt BB DAB TRIGger OUTPut ch PATTern on page 48 ON OFF A regular marker signal that is defined by an ON OFF ratio is gener Ratio ated A period lasts one ON and OFF cycle ON time OFF time ON time OFF time The ON Time and OFF Time are each expressed as a number of samples and are set in an input f
47. nt s processing time the first samples are cut off and no signal is outputted After elapsing of the internal processing time the output signal is syn chronous to the trigger event For two or more R amp S SMBVs configured to work in a master slave mode for synchronous signal generation enable this parameter in the slave instruments in case the master instru ment provides the slaves with its internal trigger signal 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 While working in a master slave mode and a common external trigger event is provided for the master and the slave instru ments disable this parameter in the slave instruments RST 1 BB DAB TRIG SOUR EXT sets external triggering BB DAB TRIG EXT SYNC OUTP ON enables synchrounous output to external trigger Trigger Settings Manual operation See Sync Output to External Trigger on page 22 SOURce lt hw gt BB DAB TRIGger 0BASeband DELay Delay Specifies the trigger delay expressed as a number of samples for external triggering Parameters Delay float Range 0 to 65535 RST 0 Example BB DAB TRIG SOUR EXT sets an external trigger BB DAB TRIG DEL 50 sets a delay of 50 symbols for the trigger
48. ome functions shown in the screenshots may not be available in your par ticular product configuration Naming of Software Options In this operating manual we explicitly refer to options required for specific functions of the digital standard The name of software options for signal generators vary in the name of the instrument but the option name is identical Therefore we use in this manual the placeholder R amp S SMx AMU Example Naming for an option of the vector signal generator R amp S SMBV100A e g e R amp S SMx AMU K99 stands for R amp S SMBV K99 The particular software options available for the corresponding instruments are listed on the back of the title page 2 2 1 DAB Network Introduction The R amp S Signal Generator enables you to generate signals in accordance with the Digital Audio Broadcasting DAB Terrestrial Digital Multimedia Broadcasting T DMB standard To playback a signal from a waveform file created by the simulation software R amp S WinIQSIM2 the corresponding R amp S WinIQSIM2 digital standard option must be installed The generated signals are compliant with ETSI EN 300 401 standard Via the user friendly graphical interface of R amp S Signal Generator you can adjust several DAB sig nal parameters You are enabled to generate a signal corresponding to one of the four standard transport modes Transmission Mode I Il or IV You can also choose to enable or disable channel cod
49. ormation on default settings and parameters refer to the data sheets Basic information on operating the R amp S Signal Generator is not included in the option manuals Conventions Used in the Documentation Service Manual The Service Manual is available in PDF format in printable form on the Documenta tion CD ROM delivered with the instrument It describes how to check compliance with rated specifications on instrument function repair troubleshooting and fault elimina tion It contains all information required for repairing the instrument by the replacement of modules This manual can also be orderd in printed form see ordering information in the data sheet Release Notes The release notes describe new and modified functions eliminated problems and last minute changes to the documentation The corresponding firmware version is indicated on the title page of the release notes The current release notes are provided in the Internet Web Help The web help provides online access to the complete information on operating the R amp S Signal Generator 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 on the R amp S Signal Generator product page at the Down loads Web Help area Application Notes Application notes application cards white papers and educational notes are further publications that provide more co
50. ornfig ratiorn aee entre pi E LY aane Rang 17 18 3 4 Trigger Marker Clock 65 11 11 u 19 o Ee 20 3A Maker ModE e 24 943 Marker Delay ibo Hr dp a ra tre mus s Ska BRE 25 3 44 Clock uso cibus l usa an l esas aha aha awisa 26 3 4 5 Global SONGS beet Du 28 4 Remote control commands eere 29 4 1 GeneralCommands U LU 30 42 System Configuration U UU 35 4 3 Settings IILI iisas ssssssas 36 LEE IJESBJuUDlce 40 4 5 Marker Settings LLULLU trennen iet iain Yo anced teste cveceeseeseeasscuneevessies 45 4 6 Clock Settings uu aus as nnt teen inane sa kan rr knock na RR Eg suwas x Va pena Rae 50 List of Commands I UU M Dx IU INN 53 Ing x 55 1 1 Documentation Overview Preface Documentation Overview The user documentation for the R amp S Signal Generator consists of the following parts Online Help system on the instrument e Quick Start Guide printed manual e Documentation CD ROM with Online help system chm as a standalone help Operating Manuals for base unit and options Servic
51. rent range Restricts the marker delay setting range to the dynamic range In this range the delay can be set without restarting the marker and signal Remote command SOURce lt hw gt BB DAB TRIGger OUTPut DELay page 46 3 4 4 Clock Settings The clock settings are used to set the clock source and a delay if required Sync Mode for R amp S SMBV only Selects the synchronization mode This parameter is used to enable generation of very precise synchronous signal of sev eral connected R amp S SMBVs Note If several instruments are connected the connecting cables from the master instrument to the slave one and between each two consecutive slave instruments must have the same length and type Avoid unnecessary cable length and branching points None The instrument is working in stand alone mode Sync Master The instrument provides all connected instrument with its synchroni sation including the trigger signal and reference clock signal lock Settings Sync Mode Sync Master Set Synchronisation Settings Trigger Marker Clock Settings Sync Slave instrument receives the synchronisation and reference clock sig nal from another instrument working in a master mode Remote command SOURce lt hw gt BB DAB CLOCk SYNChronization MODE on page 51 Set Synchronization Settings for R amp S SMBV only Performs automatically adjustment of the instrument s setting
52. requency shift The cut off frequency of the cosine filter can be adjusted to reach spectrum mask requirements Remote command SOURce lt hw gt BB DAB FILTer PARameter COSine COFS on page 37 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 DAB FILTer PARameter LPASs on page 38 SOURce lt hw gt BB DAB FILTer PARameter LPASSEVM on page 38 3 4 Trigger Marker Clock Settings To access this dialog select Main Menu gt Trigger Marker The Trigger In section is where the trigger for the signal is set Various parameters will be provided for the settings depending on which trigger source internal or exter nal is selected The current status of signal generation Running or Stopped is indicated for all trigger modes The Marker Mode section is where the marker signals at the MARKER output con nectors are configured 3 4 1 Trigger Marker Clock Settings Marker Marker1 Patem gt 10 Marker 2 onoff Ratio OnTime 1 samwes gt ontime 1 samwes gt Marker3 Patem gt 10 Marker4 gt 0011 The Marker tab is where the marker signals at the MARKER output connectors are configured The Marker Delay section is where a marker signal delay can be defined either with out restriction or
53. restricted to the dynamic section i e the section in which it is possi ble to make settings without restarting signal and marker generation Marker Delay Current Range Without Recalculation 2000 Samples 0 2000 Samples 2000 Samples 0 000 Samples 0 2000 Samples Fix Marker Delay To Current Range The Clock Settings section is where the clock source is selected and in the case of an external source the clock type Settings Clock Source Internat The buttons the last section lead to submenu for general trigger clock and mapping settings Global TriggeriClock Settings User Marker AUX I O Settings Trigger In The Trigger In section is where the trigger for the signal is set Various parameters will be provided for the settings depending on which trigger source internal or exter nal is selected The current status of signal generation Running or Stopped is indicated for all trigger modes Trigger Marker Clock Settings Trigger Mode Selects trigger mode i e determines the effect of a trigger event on the signal genera tion 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
54. s for the trigger Manual operation See Trigger Delay on page 24 SOURce lt hw gt BB DAB TRIGger EXTernal lt ch gt 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 in the case of external triggering Parameters lt Inhibit gt integer Range 0 to 67108863 RST 0 Example BB DAB TRIG SOUR 1 selects an external trigger via the TRIGGER 1 connector BB DAB TRIG INH 200 sets a restart inhibit for 200 samples following a trigger event Manual operation See Trigger Inhibit on page 24 Marker Settings SOURce lt hw gt BB DAB TRIGger SEQuence Sequence Selects the trigger mode Parameters Sequence 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 DAB TRIG ARM EXEC and started again 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 co
55. s required for the syn chronization mode selected with the parameter Synchronization Mode Remote command SOURce lt hw gt BB DAB CLOCk SYNChronization EXECute on page 51 Clock Source Selects the clock source Internal The internal clock reference is used to generate the symbol clock External The external clock reference is fed in as the symbol clock or multiple thereof via the CLOCK connector The symbol rate must be correctly set to an accuracy of 2 see data sheet The polarity of the clock input can be changed with the aid of Global Trigger Clock Settings In the case of two path instruments this selection applies to path A Remote command SOURce hw BB DAB CLOCk SOURce on page 51 Clock Mode Enters the type of externally supplied clock Sample A sample clock is supplied via the CLOCK connector Multiple Sam multiple of the sample clock is supplied via the CLOCK connector ple the sample clock is derived internally from this Remote command SOURce hw DAB CLOCk MODE on page 50 Clock Multiplier Enters the multiplication factor for clock type Multiple Remote command SOURce lt hw gt BB DAB CLOCk MULTiplier page 50 Measured External Clock Provided for permanent monitoring of the enabled and externally supplied clock signal Remote command CLOCk INPut FREQuency Trigger Marker Clock Settings 3
56. subsequent trigger event internal with or external causes a restart e Armed_Retrigger The signal is 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 DAB TRIGger SEQuence on page 45 Signal Duration Defines the length of the signal sequence to be output in the Single trigger mode It is possible to output deliberately just part of the signal an exact sequence of the sig nal or a defined number of repetitions of the signal Remote command SOURce lt hw gt BB DAB TRIGger SLFNgth on page 43 Running Stopped 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 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 DAB TRIGger RMODe on page 42 Arm Stops signal generation manually This button appears only with Running signal gen er
57. to 0 5 Manual operation See Cut Off Frequency Factor on page 19 SOURce lt hw gt BB DAB FILTer PARameter PGAuss lt PGauss gt 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 DAB 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 on page 18 SOURce lt hw gt BB DAB FILTer PARameter RCOSine lt RCosine gt Sets the roll off factor for the Root Cosine filter type Parameters lt RCosine gt float Range 0 to 1 Increment 0 01 RST 0 22 Example BB DAB FILT PAR RCOS 0 22 sets the roll off factor to 0 22 for filter type Root Cosine Manual operation See Roll Off Factor or BxT on page 18 SOURce lt hw gt BB DAB FILTer PARameter SPHase lt SPhase gt 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 Example BB DAB 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 18 4 4 Trigger Settings SOURce lt hw gt BB DAB SRATe VARiation Variation Enters the output sample rate A variation of this parameter only affects the ARB clock rate all other signal parame ters rem
58. tor or BXT on page 18 SOURce lt hw gt BB DAB FILTer PARameter COSine COFS lt Cofs gt Sets the cut off frequency shift value for the Cosine filter type Filter Settings Parameters lt Cofs gt float Range 1 to 1 Increment 0 01 RST 0 1 Example BB DAB FILT PAR COS COFS 0 35 sets the cut of frequency shift value to 0 35 Manual operation See Cut Off Frequency Shift on page 19 SOURce lt hw gt BB DAB FILTer PARameter GAUSs Gauss Sets the B x T for the Gauss filter type Parameters Gauss float Range 0 15 to 2 5 Increment 0 01 RST 0 5 Example BB DAB FILT PAR GAUS 0 5 sets B x T to 0 5 for the Gauss filter type Manual operation Roll Off Factor or BXT on page 18 SOURce lt hw gt BB DAB FILTer PARameter LPASs lt LPass gt Sets the cut off frequency factor for the Lowpass filter ACP Opt type Parameters lt LPass gt float Range 0 05 to 2 0 Increment 0 01 RST 0 5 Example BB DAB FILT PAR LPAS 0 5 the cut of frequency factor is set to 0 5 Manual operation See Cut Off Frequency Factor on page 19 SOURce lt hw gt BB DAB FILTer PARameter LPASSEVM lt LPassevm gt Sets the cut off frequency factor for the Lowpass filter EVM Opt type Parameters lt LPassevm gt float Range 0 05 to 2 0 Increment 0 01 RST 0 5 Filter Settings Example BB DAB FILT PAR LPASSEVM 0 5 the cut of frequency factor is set
59. udio services equal error protection EEP for audio and data services The sam pling frequency is respectively 48 kHz and 24 kHz The convolutional coder is a punctured convolution code based on a mother convolu tional code with constraint length 7 and rate 1 4 Operating Manual 1171 5531 12 14 11 2 6 Time Interleaving The generator polynomials are G 1 0 1 1 0 1 1 1 1 1 1 0 0 1 G3 1 1 0 0 1 0 1 and 4 lt 1 0 1 1 0 1 1 To avoid the need for additional signaling overhead the data in the FIC are encoded with fixed equal channel coding with a constant 1 3 coding rate The puncturing procedures applied for the coding in the MSC is a combination of pro tection profile and protection level There are number of permissible protection profiles defined for each of the allowed bit rates Each protection profile is associated with a protection level Protection level 1 is the highest level within the same profile Error protec Protection Profile Bit rate Protection Level Code Rate tion 14 different bit rates 1 2 3 4 5 0 34 0 75 64 different data rates protection level combinations four different pro tection profiles EEP A Multiples of 8 kbit s 1 A 1 4 2 3 8 1 2 B Multiples of 32 kbit s Time Interleaving Time interleaving is applied prior to block generation at the output of each convolu tional encode contributing to the sub channels
60. w gt Bl B SETTing DELete on page 33 UJ General Settings for DAB T DMB Signals Data Source Selects the data source to be used to generate the modulation signal All 0 All 1 0 or 1 data is generated internally PN15 PN23 PRBS data in accordance with the IUT T with period lengths between 29 1 and 223 1 are internally generated ETI File Uses data from an file The file can be selected via the Select ETI File button Remote command SOURce lt hw gt BB DAB DATA on page 30 Select ETI File Available if Data Source is set to ETI File only One of the following file types can be selected DAB ETI eti Ensemble Transport Interface files with extension et i Note The ETI File must fulfill the following prerequisites ETI file compliant with NI G 703 Frame duration 24 ms 48 KHz sampling rate Constant multiplex configuration Same stream configuration of all the frames 15 streams maximum DAB Scrabbled ETI xeti A scrambled ETI file is an encrypted ETI file with an extension xeti DAB K353 ETI dabp c R amp S SMU R amp S SMJ and R amp S SMBV only The processing of DAB transport stream files c requires option R amp S SMx K353 DAB transport files are provided on DVD To access these files use one of the following e Transfer the dabp c files to the instrument e g use USB stick or USB HDD
61. ween each two consecutive slave instruments must have the same length and type Avoid unnecessary cable length and branching points Parameters lt Mode gt Example Manual operation Clock Settings NONE MASTer SLAVe NONE The instrument is working in stand alone mode MASTer The instrument provides all connected instrument with its syn chronisation including the trigger signal and reference clock signal SLAVe The instrument receives the synchronisation and reference clock signal from another instrument working in a master mode RST NONE BB DAB CLOC SYNC MODE MAST the instrument is configured to work as a master one See Sync Mode on page 26 List of Commands ESOURce lt hw gt BB DAB CLOCk MODEB u ua teer rne sa otra Ba 50 SOURceshw TBB DAB GEOGICMULTIpIIBE R rr neta Eheu ce ceres cr E REI 50 SOURceshw BB DAB CLOCK SOURCGe rt tertie rrr ht ht hern Ern 51 SOURce hw BB DAB CLOCKk SYNChronization EXEQCute esee nennen 51 SOURce hw BB DAB CLOCKk SYNChronization MODE 51 SOURce lt hw gt BB DAB CODer STATe i FESOURG6e lt hw gt l BB DAB DATA u u enr tee t reete rer pape ee a d cre Ee UTERE e ERR IRE SOURceshw T BB DAB DATA DSEL6COn or et d aa heri eh eX eed e EORR CAPE D
62. wing commands specific to the DAB T DMB are described here General Commands This subsystem contains commands for the primary and general settings of the DAB standard These settings concern activation and deactivation of the standard filter clock and trigger settings The commands for setting the system configuration and the TPS parameter bits are described in chapter 4 2 System Configuration on page 35 8 lt gt 30 5 BBIDABIDATADSELBGOLOR 22 3t erectio e etae con neediest 31 SOURce hw EBB DAB EFRames 2 eere retec eed siano cann d Rae e eee pred 31 ESOURce hw TBBIBAB ETEGBATalou Ido pee et Rer rhet Spe qe eter ee 32 SOURGe hw BBIDABIBDURGAD 1a tore rentre ete cete tacet 32 SOURCe lt hwe BB DAB PRES hies ccescecs nce tico civico de e a d Fea ad oda 32 ESOURce shw TBB IDAB SETTing DATalog t rare x rettet te tee srt ox napa 33 SOURce lt hw gt BB DAB SETTing DELete a nennen 33 DO AD iterare deett ashata ua quas eine as 33 lt gt STORG nocicnt ere va Lee ELE ELE 34 ESOURce shw E BB DAB SETTing S TOReFAST cric rine Petr Dae qa 34
63. work in a master slave mode for chronous signal generation configure this parameter depending on the provided sys tem trigger event and the properties of the output signal See the table below for an overview of the required settings Trigger Marker Clock Settings Table 3 1 Typical Applications System Trigger Application Sync Output to External Trig ger Common External Trigger event All instruments are synchronous ON for the master and the slave to the external trigger event instruments All instruments are synchronous OFF among themselves but starting the signal from first symbol is more important than synchronicity with external trigger event Internal trigger signal of the mas All instruments are synchronous OFF ter R amp S SMBV for the slave among themselves instruments 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 outputted After elapsing of the inter nal processing time the output signal is synchronous to the trigger event Ext Trigger Event Calculated signal Signal at the output Trigger Marker Clock Settings 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 trig
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