Rohde & Schwarz 1402.9557.02 Operating Manual Download Page 31

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DVB-H User Interface

DVB-H

Operating Manual 1008.0970.12 ─ 16

3.4 Filter / Clipping Settings

► To access this dialog, select "Main dialog > Filter/Clipping/ARB Settings".

The dialog comprises the settings, necessary to configure the baseband filter and
to enable clipping.

3.4.1 Filter Settings

Provided are the following settings:

Filter

Selects the baseband filter.

Remote command:

[:SOURce<hw>]:BB:DVB:FILTer:TYPE

on page 53

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<hw>]:BB:DVB:FILTer:PARameter:APCO25

on page 51

[:SOURce<hw>]:BB:DVB:FILTer:PARameter:COSine

on page 51

[:SOURce<hw>]:BB:DVB:FILTer:PARameter:GAUSs

on page 51

[:SOURce<hw>]:BB:DVB:FILTer:PARameter:PGAuss

on page 52

[:SOURce<hw>]:BB:DVB:FILTer:PARameter:RCOSine

on page 53

[:SOURce<hw>]:BB:DVB:FILTer:PARameter:SPHase

on page 53

Filter / Clipping Settings

Summary of Contents for 1402.9557.02

Page 1: ...DVB H Digital Standard for R S Signal Generators Operating Manual Operating Manual 1008 0970 12 16 89Ô Test Measurement ...

Page 2: ...ny 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 S is a registered trademark of Rohde Schwarz GmbH Co KG Trade names are trademarks of the owners The following abbreviations are used throughout this manual R S SMBV100A is abbreviated as R S SMBV R S SMU200A is abbreviated as R ...

Page 3: ...ner Coder 10 2 1 5 Inner Interleaver 11 2 1 6 Mapper 12 2 1 7 Frame Adaption 13 2 1 8 Transport Parameter Signalling 14 2 2 Extensions to DVB T 14 2 2 1 4K Mode and In Depth Interleavers 14 2 2 2 Time Slicing 15 2 2 3 Forward Error Correction for Multiprotocol Encapsulated Data MPE FEC 17 3 DVB H User Interface 19 3 1 General Settings 19 3 2 System Configuration 23 3 3 TPS Settings 26 3 4 Filter C...

Page 4: ...tings 43 4 Remote control commands 45 4 1 General Commands 46 4 1 1 Primary Commands 46 4 1 2 Filter Settings 50 4 1 3 Clipping Settings 54 4 1 4 Trigger Settings 55 4 1 5 Marker Settings 61 4 1 6 Clock Settings 66 4 2 System Configuration 68 4 3 TPS Settings 73 List of Commands 77 Index 79 ...

Page 5: ...eeded 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...

Page 6: ...e complete information on operating the R 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 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 pu...

Page 7: ...wn values may not represent realistic test situations 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 1 2 3 Naming of Software Options In this operating manual we explicitly refer to options required for specific functions of the digital standard The...

Page 8: ...Preface DVB H 8 Operating Manual 1008 0970 12 16 Conventions Used in the Documentation ...

Page 9: ... software R S WinIQSIM2 the corresponding R S WinIQSIM2 digital standard option must be installed 2 1 Modulation System DVB H The following block diagramm shows the components of the DVB H transmission sys tem In this release only the high priority input is available Fig 2 1 Components of the Transmission System DVB H 2 1 1 Pseudo Noise Scrambler The MPEG 2 transport packet stream is organized in ...

Page 10: ...s with a PRBS period of 1503 bytes 8 packets 188 bytes 1sync byte 2 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 transp...

Page 11: ...ode Rates r Puncturing Pat tern Transmitted Sequence after parallel to serial conver sions 1 2 X 1 Y 1 X1Y1 2 3 X 10 Y 11 X1Y1Y2 3 4 X 101 Y 110 X1Y1Y2X3 5 6 X 10101 Y 11010 X1Y1Y2X3Y4X5 7 8 X 1000101 Y 1111010 X1Y1Y2Y3Y4X5Y6X7 Fig 2 2 Mother convolutional code rate of 1 2 2 1 5 Inner Interleaver The inner interleaver consists of a bit wise interleaving followed by symbol interleaving Both interle...

Page 12: ...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 2 2 1 4K Mode and In Depth Interleavers on page 14 2 1 6 Mapper All data carriers in one OFDM symbol are modulated using either QPSK 16 QAM or 64 QAM Additionally for the hierarchi...

Page 13: ...rame synchronization frequency synchronization time synchro nization channel estimation and transmission mode identification 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 Fig 2 3 OFDM frame structure Each OFDM symbol is constituted by a set of carriers The number of carriers depends on the OF...

Page 14: ...path channels on the receiving capabilities offer sufficient flexibility and scalability to allow reception of services at various speeds 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 4K Mode and In Depth Interleavers Time Slicing For...

Page 15: ...ower 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 ...

Page 16: ...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 Extens...

Page 17: ...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...

Page 18: ...ns allows the receiver to choose whether to use the MPE FEC feature or not If the MPE FEC decoder is not implemented 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 Extensions to DVB T ...

Page 19: ...s for configuring the standard The upper menu section is where the DVB H digital standard is selected enabled and reset and where the generated waveform file can be selceted In the Signal Parameters section the number of super frames can be selected and signal relevant parameters are displayed if a signal is being generated The buttons in the lower menu section lead to submenus to configure the sy...

Page 20: ...le Parameter Value State Not affected by Set to default Number of Super Frames 1 Hierarchy Mode Non hierarchical HP Sorce 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 1 2 Inner Bit Interleaver ON Inner Symbol Interleaver ON Inner Interleaver Mode Nativ...

Page 21: ...the settings Enable this function to accelerate the saving process by saving only the settings with values different to the default ones Fast Save is not affected by the Preset function File Manager Calls the File Manager The dialog is used to copy delete and rename files and to create new directories Remote command SOURce hw BB DVB SETTing CATalog on page 47 SOURce hw BB DVB SETTing LOAD on page ...

Page 22: ...e signal duration Remote command SOURce hw BB DVB DVBH DVBT DURation on page 49 System Configuration Calls the System Configuration menu for configuring the DVB H system The hierarchy mode and the data source are displayed next to the button The menu is described in chapter 3 2 System Configuration on page 23 Remote command n a TPS Settings Calls the TPS Settings menu for setting the TPS parameter...

Page 23: ... mode other than Auto have been selected Remote command SOURce hw BB DVB TRIGger EXECute on page 56 Arm Stops signal generation manually This button appears only with Running signal gen eration in the Armed_Auto and Armed_Retrigger trigger modes Remote command SOURce hw BB DVB TRIGger ARM EXECute on page 56 Clock Calls the menu for selecting the clock source and for setting a delay This menu is de...

Page 24: ... DSELection on page 70 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 For details refer to chapter 2 1 1 Pseudo Noise Scrambler on page 9 Remote command SOURce hw BB DVB DVBH DVBT HP LP PNSCramble...

Page 25: ...ommand SOURce hw BB DVB DVBH DVBT HP LP ICODer RATE on page 70 Inner Bit Interleaver Activates deactivates the inner bit interleaver For details refer to chapter 2 1 5 Inner Interleaver on page 11 Remote command SOURce hw BB DVB DVBH DVBT IINTerleaver BIT STATe on page 71 Inner Symbol Interleaver Activates deactivates the inner symbol interleaver For details refer to chapter 2 1 5 Inner Interleave...

Page 26: ...non hierarchical mode this value is always 1 an can not be changed For details refer to chapter 2 1 6 Mapper on page 12 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 hw BB DVB DVBH DVBT OFDM ALPHa on page 72 O...

Page 27: ...d SOURce hw BB DVB DVBH DVBT TPS ID PATTern on page 74 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 2 2 2 Time Slicing...

Page 28: ...ce 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 11001010000100001 Synchronization word for the second and the fourth TPS block in each super frame 17 22 The first 6 bits of the TPS information is used as a TPS length indicator to signal the number of ...

Page 29: ...ission mode For transmission mode 8K only the native interleaver shall be used 0 The native interleaver is used 1 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 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 10...

Page 30: ...0 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 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...

Page 31: ...er TYPE on page 53 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 hw BB DVB FILTer PARameter APCO25 on page 51 SOURce hw BB DVB FILTer PARameter COSine on page 51 SOURce hw BB DVB FILTer PARameter GAUSs ...

Page 32: ... parameters remain unchanged Remote command SOURce hw BB DVB SRATe VARiation on page 54 3 4 2 Clipping Settings 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 expand...

Page 33: ...ovided 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 hw BB DVB CLIPping STATe on page 55 Clipping Level Sets the limit for clipping Fi...

Page 34: ...angle is retained Scalar i q The limit is related to the absolute maximum of all the I and Q values i q The I and Q components are mapped separately the angle changes Remote command SOURce hw BB DVB CLIPping MODE on page 54 3 5 Trigger Marker Clock Settings To access this dialog select Main Menu Trigger Marker The Trigger In section is where the trigger for the signal is set Various parame ters wi...

Page 35: ...e case of an external source the clock type The buttons in the last section lead to submenu for general trigger clock and map ping settings 3 5 1 Trigger Settings 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...

Page 36: ...ied at Signal Duration Every subsequent trigger event internal or external causes a restart Remote command SOURce hw BB DVB TRIGger SEQuence on page 60 Signal Duration Unit Defines the unit for the entry of the length of the signal sequence to be output in the Single trigger mode Remote command SOURce hw BB DVB TRIGger SLUNit on page 58 Signal Duration Defines the length of the signal sequence to ...

Page 37: ...and A B two path instruments The trigger event is the trigger signal from the second path 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 hw BB DVB TRIGger SOURce o...

Page 38: ...t symbol is more important than synchronicity with external trigger event OFF Internal trigger signal of the mas ter R S SMBV for the slave instruments All instruments are synchronous among themselves OFF 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 pl...

Page 39: ... test DUT or other external devi ces Remote command SOURce hw BB DVB TRIGger EXTernal ch DELay on page 59 SOURce hw BB DVB TRIGger OBASeband DELay on page 57 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...

Page 40: ...elow it Remote command SOURce hw BB DVB TRIGger OUTPut ch PULSe DIVider on page 65 SOURce hw BB DVB TRIGger OUTPut ch PULSe FREQuency on page 65 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 hw BB DVB TRIGger OUTPut ch PATTern on page 65 O...

Page 41: ... OUTPut ch DELay MAXimum on page 62 Fix marker delay to current 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 hw BB DVB TRIGger OUTPut DELay FIXed on page 62 3 5 4 Clock Settings The clock settings are used to set the clock source and a delay if required Sync Mode for R S SMBV on...

Page 42: ...ereof via the CLOCK connector The sample 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 DVB CLOCk SOURce on page 67 Clock Mode Enters the type of externally supplied clock Sample A sample clock i...

Page 43: ...ings 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 I O Settings Calls the User Marker AUX I O Settings dialog used to map the connector on the rear of the instrum...

Page 44: ...DVB H User Interface DVB H 44 Operating Manual 1008 0970 12 16 Trigger Marker Clock Settings ...

Page 45: ...hree 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 SOURce hw 1 2 available baseband signals OUTPut ch 1 4 available markers R S SMBV supports two markers EXTernal ch 1 2 external trigger connectors Placeholder root For commands that read out ...

Page 46: ...stem 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 4 1 1 Primary Commands SOURce hw BB DVB PRESet 46 SOURce hw BB DVB SETTing CATalog 47 SOURce hw BB DVB SETTing DELete 47 SOURce hw BB DVB SETTing LOAD 47 SOURce hw BB DVB SETTing STORe 48 SOURce hw BB DVB SETTing STORe ...

Page 47: ...VB SETTing DELete Filename This command deletes the selected file with DVB H 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 DVB will be deleted Setting parameters Filename string Example BB DVB SETT DEL root DVB deletes the speci...

Page 48: ... 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 hw BB DVB SETTing STORe FAST Fast Parameters Fast 0 1 OFF ON RST ON Manual operation See Save Recall on page 21 SOURce hw BB DVB STANdard Standard The command selects the DVB standard to be used Note In this relea...

Page 49: ...e string Example MMEM CDIR root waveform sets the default directory to root 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 21 SOURce hw BB DVB DVBH DVBT DRATe The command queries the data rate Return values DRate float Increment 0 01 Example BB DVB DVBH DRAT queries the data rate Usage Q...

Page 50: ... See Sample Rate on page 22 SOURce hw BB DVB DVBH DVBT SFRames SFrames The command sets the number of super frames to be transmitted Parameters SFrames integer Range 1 to 100 RST 1 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 4 1 2 Filter Settings SOURce hw BB DVB FILTer PARameter APCO25 51 SOURce hw BB DVB ...

Page 51: ...er COSine Cosine The command sets the roll off factor for the Cosine filter type Parameters Cosine 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 31 SOURce hw BB DVB FILTer PARameter COSine COFS Cofs The command sets the cut off frequency shift value for the Co...

Page 52: ... 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 32 SOURce hw BB DVB FILTer PARameter LPASSEVM LPassEvm The command sets the cut off frequency factor for the Lowpass EVM opt filter type Parameters LPassEvm 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 se...

Page 53: ...See Roll Off Factor or BxT on page 31 SOURce hw BB DVB FILTer PARameter SPHase SPhase The command sets the B x T for the Split Phase filter type Parameters SPhase float Range 0 15 to 2 5 Increment 0 01 RST 2 00 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 31 SOURce hw BB DVB FILTer TYPE Type The command select...

Page 54: ...ion on page 32 4 1 3 Clipping Settings SOURce hw BB DVB CLIPping LEVel 54 SOURce hw BB DVB CLIPping MODE 54 SOURce hw BB DVB CLIPping STATe 55 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 Para...

Page 55: ...Example BB DVB CLIP STAT ON activates level clipping Manual operation See Clipping State on page 33 4 1 4 Trigger Settings EXTernal ch The numeric suffix to EXTernal ch distinguishes between the external trigger via the TRIGGER 1 suffix 1 and TRIGGER 2 suffix 2 connector SOURce hw BB DVB TRIGger ARM EXECute 56 SOURce hw BB DVB TRIGger EXECute 56 SOURce hw BB DVB TRIGger EXTernal SYNChronize OUTPut...

Page 56: ...d using the command SOUR BB DVB TRIG SOUR 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 23 SOURce hw B...

Page 57: ...time of the instrument RST ON Example BB DVB TRIG SOUR EXT sets external triggering BB DVB TRIG EXT SYNC OUTP ON enables synchrounous output to external trigger Manual operation See Sync Output to External Trigger on page 37 SOURce hw BB DVB TRIGger OBASeband DELay Delay Sets the trigger delay for triggering by the trigger signal from the second path Parameters Delay float Range 0 to 65535 Increme...

Page 58: ...armed trigger modes only Example BB DVB TRIG SOUR EXT sets external triggering BB DVB TRIG MODE ARET selects the Armed_Retrigger mode BB DVB TRIG RMOD queries the current status of signal generation Response RUN the signal is generated an external trigger was executed Usage Query only Manual operation See Running Stopped on page 36 SOURce hw BB DVB TRIGger SLUNit SLunit Defines the unit for the en...

Page 59: ...tion on page 36 SOURce hw BB DVB TRIGger SOURce Source Selects the trigger source Parameters Source 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 DVB TRIGger SOURce EXTernal sets external triggering via the TRIGGER 1 connector Manual ope...

Page 60: ...hibited following a trigger event This command applies only in the case of external triggering The numeric suffix to EXTernal distinguishes between the external trigger via the TRIGGER 1 suffix 1 and TRIGGER 2 suffix 2 connector Parameters Inhibit integer Range 0 to 67108863 RST 0 Example BB DVB TRIG SOUR EXT1 BB DVB TRIG INH 200 Manual operation See Trigger Inhibit on page 39 SOURce hw BB DVB TRI...

Page 61: ...SINGle 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 operat...

Page 62: ...page 41 SOURce hw BB DVB TRIGger OUTPut ch 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 restrict 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...

Page 63: ...ce hw BB DVB TRIGger OUTPut ch DELay MINimum The command queries the minimum marker delay for set ting BB DVB TRIGger OUTPut DELay FIXed ON Return values Minimum 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 minimum for the marker delay setting is 0 symb...

Page 64: ...ar 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 RESTart Example BB DVB TRIG OUTP MODE FRAME selects the frame marker signal for the corresponding marker signal Manual operation See Marker Mode on page 40 SOURce hw BB DVB TRIGger OUTPut ch OFFTime OffTime...

Page 65: ...B TRIGger OUTPut MODE PULSe The pulse frequency is derived by dividing the symbol rate by the divider Parameters Divider 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...

Page 66: ... 68 SOURce hw 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 derived internally from it The multiplier is entered with the com mand BB DVB CLOCk MULTiplier For two path instruments the only numerical suffix allowed for SOURce is 1 since the external clock sour...

Page 67: ...r path A since the external clock source is permanently allocated to path A Selection AINternal is only possible for path B Parameters Source INTernal EXTernal AINTernal INTernal The internal clock reference is used EXTernal The external clock reference is supplied to the CLOCK connec tor Commands BB DVB CLOCk MODE and MULTiplier are used to enter the type of the external clock AINTernal The clock...

Page 68: ...ed R S SMBVs Note If several instruments are connected the connecting cables from the master instru ment 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 Parameters Mode NONE MASTer SLAVe NONE The instrument is working in stand alone mode MASTer The instrument provides all connected instrument...

Page 69: ...DVB DVBH DVBT OFDM BWIDth 73 SOURce hw BB DVB DVBH DVBT OFDM GINTerval 73 SOURce hw BB DVB DVBH DVBT OFDM MODulation 73 SOURce hw BB DVB DVBH DVBT HMODe HMode 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 HMode NHIerarchical HIERarchical NHIErarchical HIErarchical RST NHIErarchical Exa...

Page 70: ...ample BB DVB DVBH HP DATA DLIS selects the data list as the data source MMEM CDIR root Lists selects the directory for the data lists BB DVB DVBH HP DATA DSEL dvb_1 selects the file dvb_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 24 SOURce hw BB DVB DVBH DVBT HP LP ICODer RATE Rate The command selects t...

Page 71: ... interleaver Manual operation See Outer Interleaver on page 25 SOURce hw BB DVB DVBH DVBT HP LP PNSCrambler STATe State The command activates deactivates the PN scrambler Parameters State 0 1 OFF ON 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...

Page 72: ...BH DVBT IINTerleaver SYMBol TMODe TMode The command selects the transmission mode Parameters TMode 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 25 SOURce hw BB DVB DVBH DVBT IINTerleaver SYMBol STATe State The command activates deactivates the inner symbol interleaver Parameters State 0 1 OFF ON ...

Page 73: ...command selects the OFDM RF guard interval Parameters GInterval GI1D4 GI1D8 GI1D16 GI1D32 RST GI1D8 Example BB DVB DVBH OFDM GINT GI1D8 sets the OFDM guard interval to 1 8 of the symbol period Manual operation See OFDM RF Guard Int on page 26 SOURce hw BB DVB DVBH DVBT OFDM MODulation Modulation The command selects the constellation for the OFDM modulation Parameters Modulation QPSK QAM16 QAM64 RS...

Page 74: ...D 4 hex on page 27 SOURce hw BB DVB DVBH DVBT TPS ID STATe State The command activates deactivates the TPS cell identification Parameters State 0 1 OFF ON RST ON Example BB DVB DVBH TPS ID STAT ON activates the TPS cell identification Manual operation See Cell Identification on page 27 SOURce hw BB DVB DVBH DVBT TPS MFEC STATe State The command activates deactivates the multiprotocol encapsulation...

Page 75: ...te control commands DVB H 75 Operating Manual 1008 0970 12 16 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 27 TPS Settings ...

Page 76: ...Remote control commands DVB H 76 Operating Manual 1008 0970 12 16 TPS Settings ...

Page 77: ...VBT SAMPle RATE 50 SOURce hw BB DVB DVBH DVBT SFRames 50 SOURce hw BB DVB DVBH DVBT TPS ID PATTern 74 SOURce hw BB DVB DVBH DVBT TPS ID STATe 74 SOURce hw BB DVB DVBH DVBT TPS MFEC STATe 74 SOURce hw BB DVB DVBH DVBT TPS TSLicing STATe 74 SOURce hw BB DVB DVBH DVBT HP LP DATA 69 SOURce hw BB DVB DVBH DVBT HP LP DATA DSELection 70 SOURce hw BB DVB DVBH DVBT HP LP ICODer RATE 70 SOURce hw BB DVB DVB...

Page 78: ...r OUTPut ch DELay 62 SOURce hw BB DVB TRIGger OUTPut ch DELay MAXimum 62 SOURce hw BB DVB TRIGger OUTPut ch DELay MINimum 63 SOURce hw BB DVB TRIGger OUTPut ch MODE 63 SOURce hw BB DVB TRIGger OUTPut ch OFFTime 64 SOURce hw BB DVB TRIGger OUTPut ch ONTime 64 SOURce hw BB DVB TRIGger OUTPut ch PATTern 65 SOURce hw BB DVB TRIGger OUTPut ch PULSe DIVider 65 SOURce hw BB DVB TRIGger OUTPut ch PULSe FR...

Page 79: ...31 Settings 31 Filter Parameter 31 51 Filter Type 31 53 Filtering Clipping Settings 31 Fix marker delay to current range 41 Fix marker to dynamic range 62 Frame Start Marker 40 G Generate Waveform File 21 Global Trigger Clock Settings 43 Guard Interval 26 H Hierarchy Mode 24 HP Source 24 HP Source DVB H 69 I ID 4 hex 27 Inner Bit Interleaver 25 Inner Coder 25 Inner Coder DVB H 70 Inner Interleaver...

Page 80: ...n 21 Save DVB H Settings 21 Set Synchronization Settings 42 Set Synchronization Settings DVB H 68 Set to Default 20 Signal Duration 36 Signal Duration Unit 36 Standard DVB H 48 69 Standard Settings 20 State 20 State Clipping 55 Stop Signal Generation 23 37 Stopped 36 Super Frame Start Marker 40 Sync Output to External Trigger 37 Synchronization mode 41 Synchronization Mode DVB H 68 T Time Slicing ...

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Rohde & Schwarz 1402.9557.02, Operating Manual

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