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K286 IEEE 802.11n / IEEE 802.11ac

1. 149 SOURce hw BB WLNN FBLock ch BF Configuration CAPability DBACK esses 150 SOURce hw BB WLNN FBLock ch BF Configuration CAPability DOF Dm eene 151 SOURce hw BB WLNN FBLock ch BF Configuration CAPability ESS eese 150 5 lt gt lt gt 150 SOURce hw BB WLNN FBLock ch BF Configuration CAPability IBSS m SOURce hw BB WLNN FBLock ch BF Configuration CAPability PBCC eese 151 5 lt gt lt gt 151 SOURce lt hw gt BB WLNN FBLock lt ch gt BF Configuration CAPability QOS sese 152 SOURce lt hw gt BB WLNN FBLock lt ch gt BF Configuration CAPability RMEasurement 152 SOURce lt hw gt BB WLNN FBLock lt ch gt BF Configuration CAPability SMGMt esee 152 SOURce hw BB WLNN FBLock ch BF Configuration CAPability SPReamble 152 SOURce hw BB WLNN FBLock ch BF Configuration CAPability SSTime
2. 106 lt gt 106 SOURce lt hw gt BB WLNN CLOCk MODE Mode Sets the type of externally supplied clock 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 SAMPle Example SOURce1 BB WLNN CLOCk MODE SAMPle selects clock type Manual operation See Clock Mode on page 79 SOURce lt hw gt BB WLNN CLOCk MULTiplier lt Multiplier gt Note This command is available for clock source External and in clock mode Multi ple Sample only Specifies the multiplier for clock type Multiplied BB WLNN CLOCk MODE MSAMple 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 SOURce1 BB WLNN CLOCk SOURce EXTernal selects the external clock source SOURCel BB WLNN CLOCk MODE MSAMple selects clock type Multiplied i e the supplied clock has a rate which is a multiple of the sample rate SOURCe1 BB WLNN CLOCk MULTiplier 12 the multiplier for the external clock ra
3. 133 lt gt lt gt 5 133 lt gt lt gt 8 SOURce lt hw gt BB WLNN FBLock lt ch gt MAC FCONtrol TYPE 5 lt gt lt gt ene lt gt lt gt 5 lt gt lt gt 2 2 lt gt lt gt 2 137 SOURce hw BB WLNN FBLock ch MAC HTControl CALibration POSition esses 137 SOURce hw BB WLNN FBLock ch MAC HTControl CALibration SEQuence ssss 138 SOURce hw BB WLNN FBLock ch MAC HTOControl CSISteering eese 138 SOURce hw BB WLNN FBLock ch MAC HTControl FREQuest essent 138 lt gt lt gt 139 lt gt
4. 136 Frame Configuration Settings SOURce lt hw gt BB WLNN FBLock lt ch gt MAC ADDRess lt st gt Address The command enters the value of the address fields 1 4 Exactly 48 bits must be entered Each address is 6 bytes 48 bit long The addresses can be entered in hexa decimal form in the entry field of each address field The least significant byte LSB is in left notation Parameters Address integer Range 000000000000 48 to HFFFFFFFFFFFF 48 RST H000000000000 48 Example BB WLNN FBL1 MAC ADDR2 H124836C7EA54 48 set the value for address field 2 SOURce lt hw gt BB WLNN FBLock lt ch gt MAC ADDRess lt st gt STATe State The command activates deactivates the selected address field Parameters lt State gt 0 1 RST OFF Example BB WLNN FBL1 MAC ADDR2 STAT ON activates generation of address field 2 Manual operation See Address page 49 SOURce lt hw gt BB WLNN FBLock lt ch gt MAC BSSid lt Bssid gt Sets the value of the basic service set identification BSSID field Parameters lt Bssid gt integer Example BB WLNN FBL1 MAC BSS H124836C7EA54 48 Sets the value of the BSSID field to 124836C 7EA54 Manual operation See BSSID hex on page 49 SOURce lt hw gt BB WLNN FBLock lt ch gt MAC DID Did The command enters the value of the duration ID field Depending on the frame type the 2 byte field
5. lt gt lt gt 5 aiia SOURce lt hw gt BB WLNN FBLock lt ch gt SMAPping ROW lt st gt COL lt dir gt 1 SOURce hw BB WLNN FBLock ch SMAPping ROW st COL dir2 Q esses 157 lt gt lt gt 5 lt gt lt gt lt gt 5 SOURceshw BB WENN FBLocksch SS TRe8m n rnit lt gt lt gt 5 gt gt 5 225525 eter etre SOURce hw BB WLNN FBLock ch STBC STATe SOURce hw BB WLNN FBLock ch STS Tream etn ennt tnn ten tein aei SOURce hw BB WLNN FBLock ch TDWindowing STATe sese SOURceshws BB WENN FBLEockschz MODA tnn trn ot eR rte pnm cg egere a SOURceshw BB WENN FBLock ch T TIMe ri otn en et tnn tnn torre tex ren SOURce lt hw BB WENN FBLOCKSCHAITY BE ten AE Ee da PLETENE SOURceshw BB WENN FBLocksch UIllNNDeX ien conn rnnt ert repe n
6. lt gt lt gt 108 lt gt lt gt lt gt 1 109 lt gt lt gt lt gt 109 lt gt lt gt lt gt 109 SOURce lt hw gt BB WLNN ANTenna MODE Mode The command selects the number of transmit antennas to be used Parameters Mode 1 A2 A4 A5 A6 A7 8 RST A1 Example BB WLNN ANT MODE A1 one antenna is used for transmission Manual operation See Antennas on page 29 SOURce lt hw gt BB WLNN ANTenna SYSTem System The command selects the coordinate system of the transmission chain matrix Parameters System CARTesian CYLindrical RST CARTesian Antenna Configuration Settings Example BB WLNN ANT SYST CART sets the coordinate system of the transmission chain matrix to Cartesian Manual operation See Mapping Coordinates on 29 SOURce lt hw gt BB WLNN ANTenna TCHain lt ch gt OUTPut DESTination lt Destination gt The command selects the destination of the calculated IQ chains Parameters Destination O
7. 154 SOURce hw BB WLNN FBLock ch BFConfiguration ERP NEPResent 154 SOURce hw BB WLNN FBLock ch BFConfiguration ERP UPROotection 154 4 8 5 Frame Configuration Settings SOURce lt hw gt BB WLNN FBLock lt ch gt BFConfiguration ERP BPMode lt EBPMode gt Informs associated stations whether to use the long or the short preamble Parameters lt EBPMode gt 0 1 RST 0 Example BB WLNN FBL1 BFC ERP BPM ON Informs associated stations that they should use the long pream ble Manual operation See ERP Parameters on page 56 SOURce lt hw gt BB WLNN FBLock lt ch gt BFConfiguration ERP NEPResent lt ENEPresent gt Sets Non ERP Present on This is needed if there is non ERP MU associated to the AP Parameters lt ENEPresent gt 0 1 RST 0 Example BB WLNN FBL1 BFC ERP NEPR ON Sets on Non ERP Present Manual operation See ERP Parameters on page 56 SOURce lt hw gt BB WLNN FBLock lt ch gt BFConfiguration ERP UPRotection lt EUPRotection gt Informs associated stations if they have to use protection Parameters lt EUPRotection gt 0 1 OFF RST 0 Example BB WLNN FBL1 BFC ERP UPR ON Informs associated stations that they have to use protection Manual operation See ERP Parameters on page 56 Spatial Mapping Configuration SOURce hw BB
8. 132 lt gt lt gt 1 132 5 lt gt lt gt 132 SOURce hw BB WLNN FBLock ch MAC FCON troOI cesses 133 SOURce hw BB WLNN FBLock ch MAC FCONtrOol FDS esee 133 lt gt lt gt 133 5 lt gt lt gt 5 133 lt gt lt gt 133 lt gt lt gt 133 lt gt lt gt 133 lt gt lt gt 133 lt gt lt gt 0 133 lt gt l
9. lt gt 140 Frame Configuration Settings SOURce hw BB WLNN FBLock ch MAC HTControl RDGMore eese 140 lt gt lt gt 141 SOURce hw BB WLNN FBLock ch MAC HTControl SREServed uus 141 50 lt gt gt 5 141 lt gt lt gt 21 141 SOURce lt hw gt BB WLNN FBLock lt ch gt MAC HTControl lt HtControl gt The command sets the value for the HT control field Parameters lt HtControl gt integer Range H00000000 32 to HFFFFFFFF 32 RST H00000000 32 Example BB WLNN FBL1 MAC HTC H5a5a5a5a 32 sets the value for the HT control field Manual operation See HT VHT Control on 57 SOURce lt hw gt BB WLNN FBLock lt ch gt MAC HTControl ACConstraint lt AcConstraint gt The command sets the value for the AC signal field 0 The response may contain data from any TID Traffic Identifier 1 The response may contain data only from the same AC as the last Data received from the initiator Parameters lt AcConstraint gt integ
10. M Manual Trigger si Mapping Coordinates 29 107 Marketr Delay 78 eu MCS 40 120 Measured external clock 80 62 144 Multi User MIMO group B pm CRI segment settings table state User Index s adesse reb 79 N NDP Announcement ee ceret trea No TXOPJBS dieere ctt condi t Oei m Number Of Data Symbols Nydquist filler eec cn nre etna Partial AID 2 0 00 00 1 Phase Em PLCP Format CCK PBCC PPDU Configuration Channel Coding PPDU Configuration Coding Rate PPDU Configuration Encoders 117 PPDU Configuration Guard 120 PPDU Configuration Interleaver Active 120 PPDU Configuration Preamble Header Active 123 PPDU Configuration Scrambler 125 PPDU Configuration Scrambler Init 126 PPDU Configuration Service Field 126 PPDU Co
11. Frame Block Configuration Append Frame Block Configuration Data Frame Block Configuration Data List Frame Block Configuration Frames Frame Block Configuration Idle Time 112 Frame Block Configuration Insert 83 115 Frame Block Configuration Physical Mode 113 Frame Block Configuration State 114 Frame Block Configuration Tx Mode 114 Frame Block Configuration 114 Frame Block Configuration Pattern 112 2 rere 102 Frame nre t i ceret Frame Control Frame Index hide nn date eee G Generate Waveform File 27 GID H H Global Trigger Clock Settings format indicator x 139 FT ier tte 51 HT Control 57 60 65 HIT Control State tL eee 137 141 HT VHT EE ENS 63 2 usce 50 135 Interleaver Active nes 43 L Link Adaption Control Load IEEE 802 11 WLAN settings M
12. 112 ESOURcexhw E BB WENN FBLEock sch lTIMe iiio eiie 112 lt gt lt gt 113 SOURce hw BB WLNN FBLock ch STANdard sess 113 ESOURGeshw E BBAVENN FBEOckech STAT acie Rotae a Fenton 114 5 lt gt lt gt 114 PSOURce lt hw gt 114 ESOURCGe hw EBBAVENN FBEockegh GO PV etat prete eoe tate tete retreat ona 115 SOURce hw BB WLNN FBLock ch DELete essen 115 SOURce hw BB WLNN FBLock ch INSert 1 E a aaa 115 500 lt gt lt gt 115 FSOURce lt shw gt t BB WLNNFBLOCK APPENA 252 115 SOURce lt hw gt BB WLNN FBLock lt ch gt BOOSt Boost The command assigns a specific RMS power boost attenuation to the corresponding Frame Block Modulation The power level of a Frame Block Modulation is calculated as sum of the power boost and the power level set in the header of the instrument Note At least one Frame Block should have a power boost set to 0 dB value for this gated power mode functionality to work properly Parameters lt Boost gt
13. Example BB WLNN TRIG SOUR EXT sets external triggering BB WLNN TRIG MODE ARET selects the Armed_Retrigger mode BB WLNN 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 72 SOURce lt hw gt BB WLNN TRIGger SLENgth lt Slength gt The command defines the length of the signal sequence to be output in the Single trigger mode SOUR BB WLNN SEQ SING The input is made in terms of samples It is possible to output deliberately just part of the frame an exact sequence of the frame or a defined number of repetitions of the frame Parameters lt Slength gt integer Range 1 to 2432 1 RST 1 Default unit sample Manual operation Trigger Settings BB WLNN SEQ SING sets trigger mode Single BB WLNN TRIG SLEN 200 sets a sequence length of 200 samples The first 200 samples of the current frame will be output after the next trigger event See Signal Duration on page 72 SOURce lt hw gt BB WLNN TRIGger SLUNit lt Slunit gt The command defines the unit for the entry of the length of the signal sequence SOUR BB WLNN TRIG SLEN to be output in the Single trigger mode SOUR BB WLNN SEQ SING Parameters lt Slunit gt Example Manual operation
14. lt gt lt gt 117 lt gt lt gt 118 lt gt lt gt _ 118 lt gt lt gt 118 5 lt gt lt gt 5 119 SOURce shw BB WLNN FBLock ch DBINonht 119 5 lt gt lt gt 55 1 1 120 2404 04 06 119 5 lt gt lt gt 0 120 lt gt lt gt 1 120 900 lt gt lt gt 120 SOURce hw BB WLNN FBLock ch MODulationsst eese 121 50 lt gt gt 5
15. sess 153 SOURce hw BB WLNN FBLock ch BFConfiguration DCChHannel essen 147 SOURce hw BB WLNN FBLock ch BFConfiguration ERP BPMode sss 154 SOURce hw BB WLNN FBLock ch BFConfiguration ERP NEPResent ssssssss 154 SOURce lt hw gt BB WLNN FBLock lt ch gt BFConfiguration ERP UPRotection 154 5 lt gt lt gt 1 153 SOURce hw BB WLNN FBLock ch BF Configuration HTCapability S TATe esses 153 SOURce hw BB WLNN FBLock ch BFConfiguration lAWindow eese 147 SOURce hw BB WLNN FBLock ch BF Configuration SRATe sse 147 500 lt gt lt gt 6 2 148 SOURce hw BB WLNN FBLock ch BF Configuration TSTamp sse 148 SOURce lt hw gt BB WLNN FBLock lt ch gt BOOSt SOURce lt hw gt BB WLNN FBLock lt ch gt CBINonht 5 lt gt lt gt 2 117 500 lt gt lt gt 117 5 lt gt lt gt
16. 145 lt gt lt gt 146 lt gt lt gt 146 The command sets the value for the control field Parameters lt VHTContol gt integer Range H00000000 32 to HFFFFFFFF 32 RST H00000000 32 Example BB WLNN FBL1 MAC VHTC H5a5a5a5a 32 sets the value for the VHT control field Manual operation See HT VHT Control on page 57 SOURce lt hw gt BB WLNN FBLock lt ch gt MAC VHTControl ACConstraint lt VhtAcConstraint gt The command sets the value for the AC signal field It indicates the access point of the responder 1 bit Parameters lt VhtAcConstraint gt integer 0 The response may contain data from any TID Traffic Identifier 1 The response may contain data only from the same AC as the last data received from the initiator Example BB WLNN FBL MAC VHTC ACC 0 the response may contain data from any TID Manual operation See AC Constraint page 60 Frame Configuration Settings SOURce lt hw gt BB WLNN FBLock lt ch gt MAC VHTControl CTYPe lt CTYPe gt The command sets the coding information If the Unsolicited MFB subfield is set to 1 the Coding Type subfield contains the Coding information set to 0 f
17. Usage Setting only Manual operation See Save Recall on page 25 SOURce lt hw gt BB WLNN SETTing LOAD Filename The command loads the selected file with IEEE 802 11 WLAN settings The directory is set using command 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 w1ann will be loaded Setting parameters Filename string Example BB WLNN SETT LOAD wlann 1 loads file w1ann 1 Usage Setting only Manual operation See Save Recall on page 25 General Commands SOURce lt hw gt BB WLNN SETTing STORe Filename The command stores the current IEE 802 11 WLAN 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 IEE 802 11 WLAN settings are stored as files with the specific file extensions wlann Setting parameters Filename string Example BB WLNN SETT STOR wlann 1 stores the current settings into file wlann_ 1 Usage Setting only Manual operation See Save Recall on page 25 SOURce lt hw gt BB WLNN SETTing STORe FAST Fast Determines whether the instrument performs an absolute or a differential storing of the settings Enable this function to accelerate the
18. 78 100 Cut Off Frequency Factor ttr 67 Cut Off Frequency Shift terrens 67 D Data Bits P r 40 Data List 26 Data Rate 35 40 c 24 Delay Markem RT 78 Delay 97 Delete IEEE 802 11 WLAN settings 25 85 Disable Barker Spreading 41 Documentation overview 22 7 BIS e irren iro esc 132 Dynamic bandwidth in non HT 43 119 E Edit Data 26 40 Execute Trigger 72 93 Extended Spatial 2 39 External Trigger Delay External Trigger 5 iit etc ta 97 F FB Tx type FCS Feedback Request Filter Parameter Filter Type Filtering Settings Filteririg Clipping Settirigs 2 n rere 66 Fix marker delay to current range 78 99 Fixed Marker Delay Maximum 100 format indicator 139 144 Frame block configuration Frames Insert Paste Physical rcr tre rrr 32 PRD e R Standard D
19. RST OFF Example BB WLNN CLIP STAT ON activates level clipping Manual operation See Clipping State on page 68 SOURce hw BB WLNN FILTer TYPE Type The command selects the filter type Parameters Type RCOSine COSine GAUSs LGAuss CONE COF705 COEQualizer COFequalizer C2K3x APCO25 SPHase RECTangle PGAuss LPASs DIRac ENPShape EWPShape LPASSEVM RST Depends on layer mode Example BB WLNN FILT TYPE COS sets the filter type COSine Filter Clipping Settings Manual operation See Filter on page 67 SOURce lt hw gt BB WLNN FILTer PARameter APCO25 lt 25 gt Sets the roll off factor for filter type APCO25 Parameters Apco25 float Range 0 05 to 0 99 Increment 0 01 RST 0 2 Example BB WLNN PAR APCO25 0 2 sets the roll off factor to 0 2 for filter type APCO25 Manual operation See Roll Off Factor or BXT on page 67 SOURce hw BB WLNN FILTer PARameter COSine lt Cosine gt Sets the roll off factor for the Cosine filter type Parameters lt gt float Range 0 to 1 Increment 0 01 RST 0 35 Example BB WLNN 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 67 SOURce lt hw gt BB WLNN FILTer PARameter COSine COFS lt CoFs gt The command sets the cut of frequency shift value for the Cosine filter type Parameters
20. VHT 80 80MHz VHT 160MHz Data Green Field HT 20MHz X HT 40MHz HT Duplicate HT Upper HT Lower Sounding Green Field HT 20MHz X HT 40MHz HT Duplicate HT Upper HT Lower Beacon Legacy L 10MHz X L 20MHz X L Duplicate L Upper X X X X X X X X X X X X X X X X X X X XxX XxX XxX XxX XxX XxX XxX x x x Frame Block Configuration Type Physical Tx Mode Transmission Bandwidth Mode 20 MHz 40 MHz 80 MHz 160 MHz CCK X X X X PBCC X X X X Remote command SOURce hw BB FBLock ch TMODe on page 114 Frames Sets the number of frames to be transmitted in the current frame block Remote command SOURce hw FBLock ch FCOunt on page 110 Idle Time ms Sets the time interval separating two frames in this frame block Remote command SOURce hw BB WLNN FBLock ch ITIMe on page 112 Data Selects the data source The following standard data sources are available e All O All 1 An internally generated sequence containing 0 data or 1 data e An internally generated pseudo random noise sequence Pattern An internally generated sequence accord
21. lt gt 139 SOURce lt hw gt BB WLNN FBLock lt ch gt MAC HTControl NDP SOURce lt hw gt BB WLNN FBLock lt ch gt MAC HTControl RDGMore SOURce hw BB WLNN FBLock ch MAC HTOControl REServed 141 5 lt gt lt gt 5 2 141 5 lt gt lt gt 5 5 lt gt lt gt 21 lt gt lt gt 5 SOURce lt hw gt BB WLNN FBLock lt ch gt MAC QSControl STATe SOURce lt hw gt BB WLNN FBLock lt ch gt MACISA ceccecseceeseeeeeeneenreeeeeaeeeeecaeeeeesaeseeesaeseeeaesaeeeaeenteneeeatents SOURce hw BB WLNN FBLock ch MAC SCONItrol F RAGment INCRement sess 135 SOURce lt hw gt BB WLNN FBLock lt ch gt MAC SCONtrol FRAGment STAREt eene 135 SOURce hw BB WLNN FBLock ch MAC SCONItrol SEQuence INCRement esses 135 SOURce hw BB WLNN FBLock ch MAC SCONtrol SEQuence STARt sss 136 5 lt gt lt
22. lt gt 1 BB WENN FBEOCKSGChS MGS cct tro RE cte ea ea tr E PEDE REDE 5 lt gt lt gt lt gt SOURce hw BB WLNN FBLock ch MPDU COUNtL BB WENN FBEoCKSChS MPDU EQF ota e cet o ien E e iere SOURce lt hw gt BB WLNN FBLock lt ch gt MPDU lt st gt DATA DSELection SOURce hw BB WLNN FBLock ch MPDU sst DATA LENGIh eee lt gt lt gt 0 lt gt lt gt lt gt 0 lt gt 5 5 lt gt lt gt 0 lt 6 gt 00 244 0 000 teens 5 lt gt lt gt 0 lt 0 gt 575 5 lt gt lt gt 5 SOURce lt hw gt BB WLNN FBLock lt ch gt NTPS SOURce hw BB WLNN FBLock ch PAID PATTern essent lt gt lt gt
23. General Settings for WLAN Signals Generate Waveform File Calls the Generate Waveform menu This menu is used to store the WLAN output stream with Baseband destination as ARB signal in a waveform file This file can be loaded in the ARB menu and processed as multi carrier or multi seg ment signal The file name is entered in the submenu The file is stored with the predefined file extension wv The file name and the directory it is stored are user definable Remote command SOURce lt hw gt WLNN WAVeform CREate on page 86 Transmission Bandwidth Selects the transmission bandwidth If the system bandwidth is set to 20 MHz all invalid configurations in the frame blocks table are set to the default values Remote command SOURce lt hw gt BB WLNN BWidth on page 82 Configure Baseband B from Baseband A The parameter is available only in path A of two path instruments Enables disables coupling of both baseband paths i e control of both paths via the WLAN menu Note For instruments with enabled parameter Configure Baseband B from Baseband A enabling the WLAN signal generation in path A disables all other digital standards and digital modulation modes in path B ON An active coupling mode is useful for MIMO signal setups In this case baseband B is controlled from baseband A and generates an identical setup The assignment which baseband generates the signal of which ant
24. IEEE 802 11p j Standard settings Start Number ep State Clipping E iier Mm ELU 10 MPTE Sync Output to External Trigger Synchronization mode Synchronization Mode WLAN T Time Domain Windowing Active 43 SMit 65 Time Shift Element 2 66 Time Shift Element 66 44 Transmission Bandwidth 2200 002 82 Transmission Chain Mapping Output File Select 108 Transmission Chain Mapping Real Output 108 Trigger Delay nee Trigger Delay External Trigger Delay Other Baseband 94 Uere gelo 74 TriggerInhibit External iret ien one 97 Trigger Mode PUIG G 71 PUNO dlenasne 71 Retrigger zd SUNG 71 Trigger parameter S p 28 Trlgger 72 U Unsolicited MFB 225 idc toi e 61 146 User 42 5 39 128 User Marker AUX I O Settings 80 V VHT n prt ersten 142 AG Co
25. S 78 3 10 5 Global Settings recen eec e ceca eie 80 4 Remote Control Commands cessent 81 General Commands oinnes eic treni uL 82 4 2 Filter Clipping 87 43 92 AA Marker Settings teneri 98 4 5 Clock Ee o teni niit inniti nene ilo si i panne ick 104 4 6 Antenna Configuration Settings seen nennen nnn 107 4 7 Frame Block 110 4 8 Frame Configuration Settings seeseeesesseseseeeeeeen ennt nnne nnne 116 4 8 1 Frame Block PPDU Configuration esee enn 116 4 8 2 MPDU 2 129 4 8 3 4 8 3 1 4 8 3 2 4 8 3 3 4 8 4 4 8 4 1 4 8 4 2 4 8 4 3 4 8 5 MAC Header 2 0000 131 Common Fields COmMANdS Doe ddp 131 Header 136 Header VHT 2 4 000 0 eene nen 142
26. 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 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 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 K98 stands for R amp S SMBV K99 The particular software options avail
27. gt lt gt gt lt gt gt 2 5 lt gt lt gt lt gt lt gt SOURce lt hw gt BB WLNN TRIGger OUTPut lt ch gt ONTime lt gt lt gt snae SOURce hw BB WLNN TRIGger OUTPut ch PULSe DlVider esee 104 SOURce hw BB WLNN TRIGger OUTPut ch PULSe FREQuency essen 104 SOURce hw BB WLNN TRIGger OUTPut ch RESH ft essent 103 SOURceshw BB WENN TRIGger RMODJ Y erret teen nnt n en eren 95 SOURceshw BB WENN TRIGger SLEENgthi treno ther iret trie nne nr nia 95 SOURce lt hw gt BB WLNN TRIGger SLUNit 2 96 lt gt 96 lt gt lt gt 97 lt gt lt gt 97 SOURceshw BB W
28. gt 2 2 2 2 2 0 0 020004740079 0000004 102 5 lt gt gt 2 103 lt gt gt 2 103 lt gt lt gt 103 lt gt lt gt 104 SOURce hw BB WLNN TRIGger OUTPut ch PULSe FREQuency sss 104 SOURce lt hw gt BB WLNN TRIGger OUTPut DELay FlXed Fixed The command restricts the marker delay setting range to the dynamic range In this range the delay can be set without restarting the marker and signal If a delay is entered in setting ON but is outside this range the maximum possible delay is set and an error message is generated Parameters Fixed 0 1 RST OFF Example BB WLNN TRIG OUTP DEL FIX ON restricts the marker signal delay setting range to the dynamic range Manual operation See Fix marker delay to current range on page 78 SOURce lt hw gt BB WLNN 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
29. inm hene e nr eh 85 ESOURCEs lt hw gt BB WUNN SE TFNO STORG fresni nee ranee EAEE Ex 86 SOURce lt hw gt BB WLNN SETTing STORe FAST 5 0 lt gt 5 PaT Nae 92 5 rd 91 lt gt 5 86 SOURce lt hw gt BB WLNN TRIGger ARM EXECute SOURceshws BB WENN TRIGger EXE GUI nE 93 lt gt 0 93 50 lt gt 94 lt gt 2 94 50 0 lt gt 2 99 SOURceshw BB WLNN TRIGger OUTPut ch DELay nennen trennen tnn nnn tatnen nnt SOURce lt hw gt BB WLNN TRIGger OUTPut lt ch gt DELay MAXimum lt gt lt gt 100 lt gt
30. 0 BB WLNN FBL1 BFC CAP PRIV Manual operation See Capability Information Parameters page 54 Frame Configuration Settings Informs the associated stations that encryption is required for all data frames SOURce hw BB WLNN FBLock ch BFConfiguration CAPability QOS lt 005 gt Informs the associated stations if quality of service QoS is supported Parameters lt 005 gt 0 1 OFF ON RST 0 Example SOUR BB WLNN FBL1 BFC CAP QOS ON Informs the associated stations that quality of service QoS is supported Manual operation See Capability Information Parameters on page 54 SOURce lt hw gt BB WLNN FBLock lt ch gt BFConfiguration CAPability RMEasurement lt RMEasurement gt Informs the associated stations if radio measurement is supported Parameters lt RMEasurement gt 0 1 OFF ON RST 0 Example SOUR BB WLNN FBL1 BFC CAP RME ON Manual operation See Capability Information Parameters on page 54 Informs the associated stations that radio measurement is supported SOURce lt hw gt BB WLNN FBLock lt ch gt BFConfiguration CAPability SMGMt lt SMGMt gt Informs the associated stations if spectrum management is enabled Parameters lt SMGMt gt 0 1 OFF ON RST 0 Example SOUR BB WLNN FBL1 BFC CAP SMGM ON Informs the associated stations that spectrum management is enabled Manual operation See Capability Information Parameters on page 54
31. BB WLNN FBLock lt ch gt TYPE on page 114 Physical Mode Selects the preamble design For Physical Mode gt Legacy only Type gt Data is available From 80 MHz transmission bandwidth in the frame block Type Data you can only operate in Physical Mode Mixed Mode Note Physical Mode Mixed Mode transmissions can be detected by a physical layer transceiver of 802 11a g OFDM MAC FCS would however fail Legacy Compatible with 802 11a g OFDM devices Additionally CCK PBCC frames as defined in IEEE 802 11b g are supported This mode applies to Cylindrical mapping coordinates Mixed Mode For High Throughput HT Very High Throughput VHT and 802 11a g OFDM devices Green Field For HT networks only Remote command SOURce lt hw gt BB WLNN FBLock lt ch gt PMODe on page 113 Tx Mode Sets the Tx mode The available Tx modes are dependent on the physical mode see table below Frame Block Configuration Type Physical Tx Mode Transmission Bandwidth Mode 20 MHz 40 MHz 80 MHz 160 MHz Data Legacy L 10MHz X L 20MHz X L Duplicate L Upper L Lower CCK X PBCC X Data Sound Mixed Mode 20 2 X ing HT 40MHz HT Duplicate HT Upper HT Lower VHT 20MHz X X XI X XxX XxX X X X XxX XxX x Xx Xx X VHT 40MHz VHT 80MHz XXIX X X X X X X XI X X X
32. Parameters lt Start gt integer Range 4 to HF 4 RST HO 4 Example BB WLNN FBL1 MAC SCON FRAG STAR H4 4 sets the start value of the fragment bits of the sequence control Manual operation See Sequence Control on page 49 SOURce lt hw gt BB WLNN FBLock lt ch gt MAC SCONtrol SEQuence INCRement lt Increment gt Defines the number of packets required to increment the counter of the sequence bits of the sequence control Parameters lt Increment gt integer Range 0 to 1024 RST 1 Example BB WLNN FBL1 MAC SCON FRAG INCR 2 two packets are required to increment the counter of the sequence bits Manual operation See Sequence Control on page 49 4 8 3 2 Frame Configuration Settings SOURce lt hw gt BB WLNN FBLock lt ch gt MAC SCONtrol SEQuence STARt lt Start gt The command enters the start number of the fragment bits of the sequence control Parameters lt Start gt integer Range 000 12 to HFFF 12 RST 1000 12 Example BB WLNN FBL1 MAC SCON SEQ STAR H444 12 sets the start value of the sequence bits of the sequence control Manual operation See Sequence Control on page 49 m SOURce lt hw gt BB WLNN FBLock lt ch gt MAC SCONtrol STATe State The command activates deactivates the sequence control Parameters lt State gt 0 1 OFF ON RST OFF Example BB WLNN FBL1 MAC SCON STA
33. SAMPIe SEQuence SAMPle Unit Sample A single sample is generated after a trigger event SEQuence Unit Sequence Length A single sequence is generated after a trigger event RST SEQuence BB WLNN SEQ SING sets trigger mode Single BB WLNN TRIG SLUN SEQ sets unit Sequence for the entry of sequence length BB WLNN TRIG SLEN 2 sets a sequence length of 2 sequences Two sequences will be output after the next trigger event See Signal Duration Unit on page 72 SOURce hw BB WLNN TRIGger SOURce Source Selects the trigger source Parameters Source Example Manual operation INTernallOBASeband 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 SOURCel BB WLNN TRIGger SOURce EXTernal sets external triggering via the TRIGGER 1 connector See Trigger Source on page 72 Trigger Settings SOURce lt hw gt BB WLNN TRIGger EXTernal lt ch gt DELay Delay Parameters Delay float Range 0 to 65535 Increment 0 01 RST 0 Example BB WLNN TRIG SOUR EXT sets an external trigger via the TRIGGER 1 connector BB WLNN TRIG DEL 50 sets a delay of 50 samples for the trigger Manual operation See Trigger Delay on page 74 SOURce lt hw gt BB WLNN
34. SOURce lt hw gt BB WLNN FBLock lt ch gt BFConfiguration CAPability SPReamble lt SPReamble gt Informs the associated stations if short preamble is allowed 4 8 4 3 Frame Configuration Settings Parameters lt SPReamble gt 0 1 OFF ON RST 0 Example BB WLNN FBL1 BFC CAP SPR ON Manual operation See Capability Information Parameters on page 54 Informs the associated stations that short preamble is allowed SOURce lt hw gt BB WLNN FBLock lt ch gt BFConfiguration CAPability SSTime lt SSTime gt Informs the associated stations if short slot time is supported Parameters lt SSTime gt 0 1 OFF ON RST 0 Example BB WLNN FBL1 BFC CAPability SST Informs the associated stations that short slot time is supported Manual operation See Capability Information Parameters on page 54 SOURce lt hw gt BB WLNN FBLock lt ch gt BFConfiguration HTCapability GFleld lt GreenField gt Enables disables the support for the reception of PPDUs with HT Greenfield format Parameters lt GreenField gt 0 1 RST 0 Manual operation See Green Field on page 56 SOURce lt hw gt BB WLNN FBLock lt ch gt BFConfiguration HTCapability STATe lt State gt Activates deactivates the HT capability information element Parameters lt State gt 0 1 OFF ON RST 0 Manual operation See State on page 56 ERP Parameters SOURce hw BB WLNN FBLock ch BFConfiguration ERP BPMode
35. ree Dre tede eet eee cente nra 82 SOURcexhw EBB WENN FBEOoCGKAPPend 222 dad 83 ESOURCe hweBBIWENBESIEBEGSK eterne ciet Bae na e ene ER nex 83 SOURce hw BB WLNN FBLock ch INSert essere nennen 83 ESOURcGe hw E BBAVENN FBEocksch 83 gt 5 tt 83 SOURce hw BB WLNN FBLock ch DELete eese 83 SOURGe hw E BBAVENN DEBLOGK iaa ttc tiet a 83 lt gt lt gt 8 22222 aue 84 ESOURceshw TBBINWENNIPPBLOCGK 84 SOURceshw BB WENN PATH COUPIing STATe eisini inneren 84 SOURceshw EBBWENN PRESelt 2 nca cuc enu so des na ede e edad 84 SOURce hw E BB WENN SETTing CATalog nne h inen nanc 85 SOURce hw BB WLNN SETTing DELete sss 85 L SOURCe shw BBNVENNSET TNO LOAD cett t ete 85 SOURce lt hw gt BBAWENNISET Tihg S TORe 2 222 86 SOURceshiw 22 nent ti nnn n 86 5 lt
36. gt 86 SOURce hw BB WLNN WAVeform CREate essent nnne 86 SOURce lt hw gt BB WLNN BWidth lt BWidth gt The command selects the transmission bandwidth Whenever the bandwidth changes from a higher to a lower one the frame blocks are validated because some of them could be invalid in the lower bandwidth invalid TX Mode Parameters lt BWidth gt BW20 BW40 BW80 BW160 RST BW20 Default unit MHz General Commands Example BB WLNN BW BW40 sets the transmission bandwidth to 40 MHz Manual operation See Transmission Bandwidth on page 27 SOURce lt hw gt BB WLNN FBLock APPend The command appends a frame block to the end of the frame blocks list Example BB WLNN FBL APP appends a frame block to the end of the frame blocks list Usage Event Manual operation See Append on page 35 SOURce lt hw gt BB WLNN IFBLock IfBlock SOURce lt hw gt BB WLNN FBLock lt ch gt INSert The command adds a default frame block before the selected frame block Example BB WLNN FBL2 INS inserts a default frame block before the selected frame block Usage Event Manual operation See Insert page 35 SOURce lt hw gt BB WLNN FBLock lt ch gt COPY SOURce lt hw gt BB WLNN CFBLock lt CfBlock gt Copies the selected frame block Setting parameters lt CfBlock gt integer Range
37. gt lt gt 10 148 lt gt lt gt 148 SOURce lt hw gt BB WLNN FBLock lt ch gt BFConfiguration BINTerval lt BlInterval gt Defines the time intervall between two beacon transmissions Frame Configuration Settings Parameters lt Binterval gt float Range 0 to 65 Increment 1E 9 RST 0 1 Default unit s Example BB WLNN FBL1 BFC BINT 200ms Sets the time intervall between two beacon transmissions to 200 ms Manual operation See Beacon Interval on page 52 SOURce lt hw gt BB WLNN FBLock lt ch gt BFConfiguration DCCHannel Queries the current channel of the DSSS network Return values lt DCCHannel gt integer Example BB WLNN FBL1 BFC DCCH Usage Query only Manual operation See DSSS Current Channel on page 53 SOURce lt hw gt BB WLNN FBLock lt ch gt BFConfiguration AWindow IAWindow Sets the parameters necessary to support an IBSS 2 bytes The Information field contains the ATIM Window parameter Parameters lt lIAWindow gt integer RST 0000 Example BB WLNN FBL1 BFC IAW HFFFF 16 Manual operation See IBSS ATIM Window hex on page 53 SOURce lt hw gt BB WLNN FBLock lt ch gt BFConfiguration SRATe lt SRATe gt Determines a set of data rates that are
38. 558 IEEE 802 11 WLAN TX Antenna Setup Antennas 4 M SCPI command SOUR BB WLNN ANT MODE A4 Typical Workflows c In the Tx Antenna Setup menu of the first instrument enable the Baseband A of the instrument to generate the Tx 1 signal and respectively the Baseband B to generate the Tx 2 signal Use the default values of the transmission chain matrix utput File Baseband Baseband Off SCPI command SOUR BB WLNN ANT TCH1 OUTP D SOUR BB WLNN ANT TCH2 0UTP DEST BB B D EST BB SOUR BB WLNN ANT TCH3 0UTP DEST OFF SOUR BB WLNN ANT TCHA4 0UTP DEST OFF d To enable the R amp S Signal Generator to generate a WLAN n ac signal of anten nas with different power level set the power level of the corresponding path to the desired level in the header display of the instrument SCPI command SOUR POW 30 SOUR2 POW 20 e Use the default Frame Block Configuration settings or adjust them as required f Use the default PPDU Configuration settings or adjust them if necessary to for instance add redundancy g Enable signal generation SCPI command SOUR BB WLNN STAT ON 4 Enable the second instrument to generate the Tx 3 and Tx 4 of the same WLAN n ac signal a Save the settings of the first instrument by means of the Save Recall function and copy the settings file to USB stick external USB HDD or use a LAN con nection to transfer the settings file
39. 559 MCS60 MCS61 MCS62 MCS63 MCS64 MCS65 MCS66 MCS67 MCS68 MCS69 MCS70 MCS71 MCS72 MCS73 MCS74 MCS75 MCS76 RST MCS1 Example BB WLNN FBL1 MCS 58 selects MCS8 as the coding scheme used for the spatial stream Frame Configuration Settings Manual operation See MCS page 40 SOURce lt hw gt BB WLNN FBLock lt ch gt MODulation lt st gt Modulation The command selects the modulation used for the spatial stream Parameters Modulation BPSK QAM16 64 QAM256 RST QPSK BPSK for Tx Mode HT Duplicate Example BB WLNN FBL5 MOD1 BPSK sets BPSK as the modulation mode used for the spatial stream Manual operation See Stream n on 40 SOURce lt hw gt BB WLNN FBLock lt ch gt MUMimo STATe lt MUMimo gt Activates Multi User MIMO This function applies to Spatial Streams gt 1 Parameters lt MUMimo gt 0 1 OFF ON RST 0 Example BB WLNN BB WLNN FBL1 MUM STAT ON activates Multi User MIMO Manual operation See Multi User MIMO on page 39 SOURce lt hw gt BB WLNN FBLock lt ch gt MU lt st0 gt GID lt GID gt Sets the group ID for all available users Parameters lt GID gt integer Range 1 to 62 RST 1 Example BB WLNN BB WLNN FBL1 MU1 GID 1 0 assigns group ID 1 0 to user 1 Manual operation See Multi User MIMO Settings Table on page 39 SOURce lt hw gt BB WLNN FBLock lt ch gt MU l
40. If the number of OFDM data symbols is changed the generator calculates the data field length as a function of the set PPDU bit rate and displays it at Data Length Parameters Symbols integer Range 1 to Max RST 158 Example BB WLNN FBL5 DATA SYMB 1 sets the number of data symbols per frame block to 1 Manual operation See Number Of Data Symbols on page 43 SOURce lt hw gt BB WLNN FBLock lt ch gt DBINonht lt DBINonht gt avaliable only for VHT Tx mode This command is used to modify the first 7 bits of the scrambling sequence to indicate if the transmitter is capable of Static or Dynamic bandwidth operation Parameters lt DBINonht gt STAT DYN OFF STAT The transmitter is capable of static bandwidth operation DYN The transmitter is capable of dynamic bandwidth operation OFF Dynamic bandwidth in Non HT is not present RST OFF Example BB WLNN FBL1 DBIN DYN the transmitter is capable of dynamic bandwidth operation Manual operation See Dyn Bandwidth in Non HT on page 43 SOURce lt hw gt BB WLNN FBLock lt ch gt ESSTream lt EsStream gt Sets the value of the extended spatial streams This field is active for frame block type SOUNDING only to probe additional dimensions to the channel Parameters lt EsStream gt integer Range 1 to dynamic Increment 1 RST 1 Example BB WLNN FBL5 ESSTR 4 sets the number of the extended spatial streams to 4 Frame Configuratio
41. ced ek he Ne Haha SOURceshw 5 BB WLENN CLIPping MODPBE tenen tht etn inno lt gt 5 nter tnter ne t th rete trennen nnda SOURceshw gt BB WENN CLOCK MODE se scott SOURceshw5 BB WENN CLOGCIK MUL Tiplier ecco tnit etn ru tne cni rrr hte SOURceshw BB WENN GEOCK SOURCGe 21e terrere tine retro Ee eade SOURce hw BB WLNN CLOCKk SYNChronization EXECute lt gt SOURceshw BB WENN DFBLOCK SOURceshw gt BB WENN FBEOCK APPEN Gh a e x eR eS SOURceshw5 BB WLNN FBLock APP end 2 22 nens lt gt lt gt 2 202 SOURce hw BB WLNN FBLock ch BF Configuration CAPability AP SD cesses SOURce hw BB WLNN FBLock ch BFConfiguration CAPability CAGility 5 lt gt lt gt 149 5 lt gt lt gt
42. lt gt 5 126 lt gt lt gt 126 lt gt lt gt 126 SOURce hw BB WLNN FBLock ch SSTReam sse i 127 5 lt gt lt gt 5 5 224004440 127 lt gt lt gt 8787 222 2 scena enn 127 lt gt lt gt 128 lt gt lt gt 128 lt gt lt gt 6 128 SOURce lt hw gt BB WLNN FBLock lt ch gt CBINonht lt CBINonht gt avaliable only for VHT Tx mode The command is used to modify the first 7 bits of the scrambling sequence to indicate the duplicated bandwidth of the PPDU Frame Configuration Settings Parameters lt CBINonht gt B20 B40 B80 B160 OFF 20 40 80 160 Indicates 20 MHz 40MHz 80 2 or 160 80 80 MHz channel
43. lt CoFs gt float Range 1 to 1 Increment 0 01 RST 0 Example BB WLNN FILT PAR COS COFS 0 04 the cut of frequency shift value is set to 0 04 Manual operation See Cut Off Frequency Shift on page 67 SOURce hw BB WLNN FILTer PARameter GAUSs Gauss Sets the roll off factor for the Gauss filter type Filter Clipping Settings Parameters Gauss float Range 0 15 to 2 5 Increment 0 01 RST 0 5 Example BB WLNN PAR GAUS 0 5 sets B x T to 0 5 for the Gauss filter type Manual operation See Roll Off Factor or BXT on page 67 SOURce lt hw gt BB WLNN FILTer PARameter LPASs lt LPass gt Sets the cut off frequency factor for the Lowpass ACP optimization filter type Parameters lt LPass gt float Range 0 05 to 2 Increment 0 01 RST 0 5 Example BB WLNN FILT PAR LPAS 0 5 the cut of frequency factor is set to 0 5 Manual operation See Cut Off Frequency Factor on page 67 SOURce lt hw gt BB WLNN FILTer PARameter LPASSEVM lt LPassevm gt Sets the cut off frequency factor for the Lowpass EVM optimization filter type Parameters lt LPassevm gt float Range 0 05 to 2 Increment 0 01 RST 0 5 Example BB WLNN FILT PAR LPASSEVM 0 5 the cut of frequency factor is set to 0 5 Manual operation See Cut Off Frequency Factor on page 67 SOURce lt hw gt BB WLNN FILTer PARameter PGAuss lt PGauss gt Sets the roll off factor for the Pure Gauss fi
44. Address 1 hex Address 2 nex Address 3 hex Address 4 hex Enablelv Enable Enable Enable 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 5 bytes 6 bytes 6 bytes 3 6 1 MAC Header and FCS MAC Header Activates deactivates the generation of the MAC Header for the PPDU If the MAC header is activated all MAC header fields are enabled for operation The individual fields of the MAC header are described in the following All values of the MAC fields except addresses are entered in hexadecimal form with least significant bit LSB in right notation In the data stream the values are output standard conformal with the LSB coming first Header FCS Configuration for Frame Block Note IEEE 802 11ac requires an A MPDU frame aggregation Therefore when gener ating a IEEE 802 11ac signal you have to set IEEE 802 11 gt Frame Blocks Data gt A MPDU Remote command SOURce lt hw gt BB WLNN FBLock lt ch gt MAC STATe on page 136 FCS checksum Activates deactivates the calculation of the FCS frame check sequence The stand ard defines a 32 bit 4 byte checksum to protect the MAC header and the user data frame body Remote command SOURce lt hw gt BB WLNN FBLock lt ch gt MAC FCS STATe on 134 3 6 2 802 11 MAC Frame Field The MAC frame control field is used to define the protocol version the frame type sub type and its function etc Fra
45. Transmitted by Responder 0 The PPDU carrying the MPDU is the last transmission by the responder 1 The PPDU carrying the frame is followed by another PPDU Parameters lt RdgMore gt integer Range 1 to H1 1 Example BB WLNN FBL1 MAC HTC RDGM 80 1 sets the value for the RDG More PPDU Manual operation See RDG More PPDU on page 58 Frame Configuration Settings SOURce lt hw gt BB WLNN FBLock lt ch gt MAC HTControl REServed Reserved This signal field is currently defined but not used It is set to zero by the transmitter and ignored by the receiver Parameters Reserved integer Range 5 to 5 2 Manual operation See Reserved on page 58 SOURce lt hw gt BB WLNN FBLock lt ch gt MAC HTControl SREServed Reserved This signal field is currently defined but not used Parameters Reserved integer Manual operation See Reserved on page 59 SOURce lt hw gt BB WLNN FBLock lt ch gt MAC HTControl STATe State The command enables disables HT Control Parameters State 0 1 RST OFF Example BB WLNN FBL1 MAC HTC STAT ON enables HT Control Manual operation See HT VHT Control on page 57 SOURce lt hw gt BB WLNN FBLock lt ch gt MAC HTControl ZLF lt 211 gt The command sets the value for the ZLF announcement 0 no ZLF will follow 1 ZLF will follow Parameters Zt integer Range 1 to H1 1 Example BB WLNN FBL1 MAC
46. 1 to 100 Example BB WLNN CFBL 5 copies frame block 5 for later insertion Usage Setting only SOURce lt hw gt BB WLNN FBLock lt ch gt DELete SOURce lt hw gt BB WLNN DFBLock lt DfBlock gt Deletes the selected frame block Setting parameters lt DfBlock gt integer Range 1 to 100 Example BB WLNN DFBL 10 deletes the selected frame block Usage Setting only General Commands SOURce lt hw gt BB WLNN FBLock lt ch gt PASTe SOURce lt hw gt BB WLNN PFBLock lt PfBlock gt Pastes the selected frame block Setting parameters lt PfBlock gt integer Range 1 to 99 Example BB WLNN PFBL 20 pastes the frame block to row 20 Usage Setting only SOURce lt hw gt BB WLNN PATH COUPIling STATe State Enables disables coupling of both baseband paths Note For instruments with enabled parameter Configure Baseband B form Baseband A enabling the WLAN signal generation in path A disables all other digital standards and digital modulation modes in path B Parameters lt State gt 0 1 OFF ON ON An active coupling mode is useful for MIMO signal setups In this case baseband B is controlled from baseband A and generates an identical setup OFF Corresponds to normal operation i e independent configuration of both paths RST 0 Example BB WLNN PATH COUP ON enables baseband coupling Manual operation See Configure Baseband B from Baseband A on page 27 SOURce lt
47. 2 Mbps Barker Sequence DQPSk the information data sequence is spread with an 11 chip Barker sequence chip rate is 11 Mcps 5 5 Mbps CCK PBCC BPSK 11 Mbps CCK or PBCC QPSK 22 Mbps PBCC 8PSK Remote command SOURce lt hw gt BB WLNN FBLock lt ch gt PSDU BRATe on page 123 PSDU Modulation available only for Tx Mode CCK PBCC Indicates the modulation type The modulation type is determined by the selected PSDU Bit Rate Remote command SOURce hw BB WLNN FBLock lt ch gt PSDU MODulation on page 124 Barker Spreading available only for Tx Mode CCK PBCC 3 4 2 PPDU Configuration Activates deactivates barker spreading bit rates 1 Mbps or 2 Mbps only Remote command SOURce hw BB WLNN FBLock ch PSDU BSPReading STATe on page 124 Data Settings Data Length Sets the size of the data field in bytes For Data Length 0 no data field will be generated for the case of a sounding frame The maximum data length depends on the physical mode e n Physical Mode gt Legacy the maximum value is 4061 Bytes e n Physical Mode gt Mixed Mode and Physical Mode gt Green Field the maxi mum value is 1048575 Bytes The data length is related to the number of data symbols Whenever the data length changes the number of data symbols is updated and vice versa Remote command SOURce lt hw gt
48. BB WLNN FBLock ch BFConfiguration CAPability CPRequest on page 149 CF Pollable The node is capable of using the point coordination function PCF as opposed to the distributed coordi nation function DCF PCF is a method of coordinat ing wireless transmissions in which one station noti fies other stations when they may broadcast SOURce lt hw gt BB WLNN FBLock ch BFConfiguration CAPability CPOLlable on page 149 IBSS The network is an independent basic service set IBSS type network This is an operation mode of a WLAN An IBSS doesn t need an AP The wireless clients directly connect with each other This mode is also named ad hoc mode SOURce lt hw gt BB WLNN FBLock ch BFConfiguration CAPability IBSS on page 150 ESS The network is an extended service set ESS type network this is a set of connected BSSs APs in an ESS are connected by a distribution system Each ESS has an ID called the SSID which is a 32 byte maximum character string SOURce lt hw gt BB WLNN FBLock lt ch gt BFConfiguration CAPability ESS on page 150 3 6 3 3 ERP Parameters The extended rate PHY ERP parameters indicate special features modes 3 6 3 4 3 7 Header Configuration ERP Parameters Function If enabled this function indicates that SCPI command name Barker Pre Associated stations have to use the long
49. Changing the number of the spatial streams immediately changes the value of the Space Time Streams to the same value Remote command SOURce hw BB gt STSTream on page 127 3 4 1 2 PPDU Configuration Extended Spatial Streams Enters the value of the extended spatial streams This field is active for Type Sound ing only to probe additional dimensions of the channel Remote command SOURce lt hw gt BB WLNN FBLock ch ESSTream on page 119 Multi User MIMO Activates Multi User MIMO This function applies to Spatial Streams 1 Remote command SOURce lt hw gt WLNN FBLock lt ch gt MUMimo STATe on page 121 Segment available only for Tx Mode gt 80 80 MHz In Tx Mode gt 80 80 MHZ one of the two segments can be selected with trans mission bandwidth 80 or 160 MHz Both segments can be only generated with band width 160 MHz Remote command SOURce lt hw gt BB FBLock ch SEGMent page 126 Space Time Block Coding Displays the status of the space time block coding Remote command SOURce lt hw gt FBLock ch STBC STATe on page 127 User Settings Provided are the following settings User Index Defines the currently generated user For Multi User MIMO gt Active only one user can be generated at a time This parameter selects the generated one out of fou
50. Example BB WLNN FBL1 MPDU1 DATA PATT 80101 4 Sets the bit pattern Manual operation See DList Pattern on page 47 SOURce lt hw gt BB WLNN FBLock lt ch gt MPDU lt st gt DATA SOURce Source Selects the data source Parameters lt Source gt ZERO ONE PATTern PN9 PN11 PN15 PN16 20 PN21 PN23 DLISt PNxx The pseudo random sequence generator is used as the data source Different random sequence lengths can be selected DLISt A data list is used The data list is selected with the command BB WLNN FBL ch MPDU st DATA DSEL ZERO ONE Internal 0 or 1 data is used PATTern Internal data is used The bit pattern for the data is defined by the command BB WLNN FBL lt ch gt MPDU lt st gt DATA PATT RST PN9 Example BB WLNN FBL1 MPDU1 DATA SOUR PATT Selects the data source Frame Configuration Settings Manual operation See Data on page 46 SOURce lt hw gt BB WLNN FBLock lt ch gt MPDU EOF lt gt Sets the EOF value for the A MPDU Parameters lt gt DEFault EO E1 RST DEFault Manual operation See EOF on page 46 4 8 3 MAC Header Configuration 4 8 3 1 Fields Commands lt gt lt gt lt gt 132 lt gt lt gt lt gt 5
51. Example BB WLNN FBL5 PMOD LEG sets the physical mode to LEGACY BB WLNN FBL5 TMOD CCK sets the transport mode BB WLNN FBL5 PSDU BRAT P2MBPS sets the PSDU bit rate BB WLNN PSDU MOD queries the modulation mode Response DQPSK Usage Query only Manual operation See PSDU Modulation on page 41 SOURce lt hw gt BB WLNN FBLock lt ch gt SCRambler MODE Mode The command selects the different options for the scrambler Parameters Mode OFF RANDom USER ON PREamble OFF The scrambler is deactivated RANDom not for CCK PBCC The scrambler is activated The initialization value of the scrambler is selected at random Each frame has a different random initialization value This value is also different in case of successive recalculations with the same setting parameters so that different signals are generated for each calculation USER not for CCK PBCC The scrambler is activated The initialization value of the scrambler is set to a fixed value that is set using the command BB WLNN FBL5 SCR PATT This value is then identical in each generated frame ON CCK PBCC only The scrambler is activated PREamble CCK PBCC only The scrambler is activated Only the preamble is scrambled RST USER Example BB WLNN FBL5 SCR MODE RAND activates the scrambler with an random initialization value Manual operation See Scrambler on page 42 F
52. float Range 80 to 0 Increment 0 01 RST 0 Default unit dB Example BB WLNN FBL5 BOOS 10 0 sets the power boost Manual operation See Boost dB on page 34 SOURce lt hw gt BB WLNN FBLock lt ch gt FCOunt lt FCount gt The command sets the number of frames to be transmitted in the current frame block Frame Block Configuration Parameters lt FCount gt integer Range 1 to 20000 Increment 1 RST 1 Example BB WLNN FBL5 FCO 1 sets the number of transmitted frames in the current frame block to 1 Manual operation See Frames on page 34 SOURce lt hw gt BB WLNN FBLock lt ch gt DATA Data Selects the data source Parameters Data ZERO ONE PATTern PN9 PN11 PN15 PN16 PN20 PN21 PN23 DLISt AMPDU PNxx The pseudo random sequence generator is used as the data source Different random sequence lengths can be selected DLISt A data list is used The data list is selected with the command BB WLNN FBLocks DATA DSEL ZERO ONE Internal 0 and 1 data is used PATTern Internal data is used The bit pattern for the data is defined by the command BB WLNN FBLocks DATA PATTern AMPDU Aggregated mac protocol data unit A MPDU data is used as configured with the commands in chapter 4 8 2 MPDU Config uration on page 129 RST PN9 Example BB WLNN FBL5 DATA PN9 sets 9 as the data source Manual operation See Data List Manageme
53. float Range 400 Hz to 40MHz Increment 0 001 Hz RST 2 MHz Default unit Hz c s Example BB WLNN SRAT VAR 4000000 sets the output sample rate to 4 MHz Manual operation See Sample Rate Variation page 68 4 3 Trigger Settings e The trigger settings are available for R amp S SMx and R amp S AMU instruments only EXTernal ch The numeric suffix to EXTernal lt ch gt distinguishes between the external trigger via the TRIGGER 1 suffix 1 and TRIGGER 2 suffix 2 connector SOURce hw BB WLNN TRIGger ARM EXECute sss 92 SOURce hw BB WLNN TRIGger EXEOCute sisse 93 SOURce hw BB WLNN TRIGger EXTernal SYNChronize OUTPut sees 93 SOURce hw BB WLNN TRIGger OBASeband DELay eee eee 94 SOURce shw BB WLNN TRIGger OBASeband INHibit 94 ESOURGeshw EBBAWENNITRIGSSERMOD enceinte ete eo rte gero 95 SOURce hw EBBAWENN TRIGgerSLENglh 2 2 2 2 1 ini 95 SOURce hw BB WLNN TRIGger SLUNIt aceite nhan nnn 96 SOURce hw BB WLNN TRIGger SOURCe 96 SOURce shw T BB WLENN TRIGger EXTemal ch DELay 2 2 rennen rrt 97 5 lt gt
54. lt gt 1 naves 97 lt gt 97 SOURce lt hw gt BB WLNN TRIGger ARM EXECute The command stops signal generation for trigger modes Armed_Auto and Armed_Ret rigger A subsequent internal or external trigger event restart signal generation Trigger Settings Example BB WLNN TRIG SOUR INT sets internal triggering BB WLNN TRIG SEQ ARET sets Armed Retrigger mode i e every trigger event causes sig nal generation to restart BB WLNN TRIG EXEC executes a trigger signal generation is started BB WLNN TRIG ARM EXEC signal generation is stopped BB WLNN TRIG EXEC executes a trigger signal generation is started again Usage Event Manual operation See Arm on 72 SOURce lt hw gt BB WLNN TRIGger EXECute The command executes a trigger The internal trigger source must be selected using the command BB WLNN TRIG SOUR INT trigger mode other than AUTO must be selected using the command BB WLNN TRIG SEQ Example BB WLNN TRIG SOUR INT sets internal triggering BB WLNN TRIG SEQ RETR sets Retrigger mode i e every trigger event causes signal gen eration to restart BB WLNN TRIG EXEC executes a trigger Usage
55. queries the resulting pulse frequency of the marker signal Response 66 000 the resulting pulse frequency is 66 kHz Manual operation See Marker Mode 75 SOURce lt hw gt BB WLNN TRIGger OUTPut lt ch gt PULSe FREQuency The command queries the pulse frequency of the pulsed marker signal in the setting SOURce BB WLNN TRIGger OUTPut MODE PULSe The pulse frequency is derived by dividing the symbol rate by the divider Return values Frequency float Example BB WLNN TRIG OUTP PULS DIV 2 sets the divider marker signal of the corresponding marker sig nal to the value 2 BB WLNN TRIG OUTP MODE PULS enables the pulsed marker signal BB WLNN TRIG OUTP PULS FREQ queries the pulse frequency of the marker signal Response 33 000 the resulting pulse frequency is 33 kHz Usage Query only Manual operation See Marker Mode on page 75 4 5 Clock Settings This section lists the remote control commands necessary to configure the clock Clock Settings o The clock settings are available for R amp S SMx and R amp S AMUinstruments only ESOURce shw IBBI WENNICEOGKMOBBE 2 c a bntuu ke xb 105 SOURce hw BB WLNN CLOCK MULTiplier eeeesese nennen 105 SOURGCecshw EBBNVENN CEOCK SOURQG tanus tad penne na 106 lt gt
56. 1bit MRQ MCS Request 1 Request for feedback of MCS Modulation Coding Scheme B3 B5 3bit MRS MRQ Sequence Identifier Set by sender to any value in the range 000 110 to identify MRQ Invalid if MRQ 0 B6 B8 3bit MFS MFB Sequence Identifier Set to the received value of MRS Set to 111 for unsolicited MFB B9 B15 7bit MFB MCS Feedback Frame Configuration Settings Link adaptation feedback containing the recommended MCS When responder is unable to provide MCS feedback or the feedback is not available the MFB is set to all ones default value and also MFS is set to 1 Parameters lt LaControl gt integer Range H0000 16 to HFFFF 16 Example BB WLNN FBL1 MAC HTC LAC H5A5A 16 sets the value for the Link AdaptionControl Manual operation See Link Adaption Control on page 59 SOURce lt hw gt BB WLNN FBLock lt ch gt MAC HTControl NDP lt gt Sets the value of the Null Data Packet NDP announcement 0 no NDP will follow 1 NDP will follow Parameters Nap integer Example BB WLNN FBL1 MAC HTC NDP H1 1 sets the value for the NDP announcement to 1 NDP will follow Manual operation See Announcement on page 58 SOURce lt hw gt BB WLNN FBLock lt ch gt MAC HTControl RDGMore lt RdgMore gt The command sets the value for the RDG More PPDU Transmitted by Initiator 0 No reverse grant 1 reverse grant is present as defined by the Duration ID field
57. A EDENE ener lt gt lt gt conto rp te ete re tpe e ta E cd SOURce lt hw gt BB WLNN FBLock lt ch gt PLCP FORMat lt gt lt gt 5 SOURceshw EBB WENN FBEock chs PMOD citar ceti trece ede nee t ebd 5 lt gt lt gt 5 8019 5 lt gt lt gt 5 5 lt gt lt gt 5 0 5 lt gt lt gt 124 SOURce lt hw gt BB WLNN FBLock lt ch gt SCRambler MODE SOURce hw BB WLNN FBLock ch SCRambler PATTern SOURceshw BB WLNN FBLock ch SEGMent eerte treten ttn there lt gt lt gt 5 2 lt gt lt gt 5 lt gt lt gt 5 2 0
58. A matrix is mapped to each sub carrier With the exception of k 0 the index can be set in the following ranges 20MHzchannel e g HT 20 MHz 32 31 40 MHz channel e g VHT 40 MHz 64 63 80 MHz channel e g VHT 80 MHz 128 127 160 MHz channel e g VHT 160 MHz 256 255 Remote command SOURce lt hw gt BB WLNN FBLock ch SMAPping INDex on page 156 Time Shift Sets the spatial mapping time shift This value is relevant for spatial mapping mode Direct and Spatial Expansion only Remote command SOURce hw BB WLNN FBLock ch SMAPping TSHift st page 156 3 9 3 9 1 Filter Clipping Settings Transmit Matrix Displays the time shift value of element of the selected row and column of the spatial transmit matrix Remote command SOURce lt hw gt BB WLNN FBLock lt ch gt SMAPping ROW lt st gt COL lt dir gt I1 on page 156 Q Transmit Matrix Displays the time shift value of element Q of the selected row and column of the spatial transmit matrix Remote command SOURce lt hw gt BB WLNN FBLock lt ch gt SMAPping ROW lt st gt COL lt dir gt Q on page 157 Filter Clipping Settings To access this dialog select General gt Filter Clipping Settings gt To access this dialog select Main dialog gt Filter Clipping Settings amp amp IEEE 802 11 WLAN Filter Clipping Settings aE Filter Filter Cosine Roll Off Factor Cut O
59. Command BB WLNN TRIGger OUTPut DELay FIXed can be used to restrict the range of values to the dynamic range i e the range within which a delay of the marker signals can be set without restarting the marker and signal Parameters Delay float Range 0 to 2 32 1 Increment 1 3 RST 0 Default unit sample Example BB WLNN TRIG OUTP DEL 1600 sets a delay of 1600 samples for the corresponding marker sig nal Manual operation See Marker x Delay 78 Marker Settings SOURce lt hw gt BB WLNN TRIGger OUTPut lt ch gt DELay MAXimum The command queries the maximum marker delay for set ting BB WLNN TRIG OUTP DEL FIX ON Return values lt Maximum gt float Example BB WLNN TRIG OUTP DEL FIX restricts the marker signal delay setting range to the dynamic range BB WLNN TRIG OUTP DEL MAX queries the maximum of the dynamic range Response 2000 the maximum for the marker delay setting is 2000 samples Usage Query only Manual operation See Current Range without Recalculation on page 78 SOURce lt hw gt BB WLNN TRIGger OUTPut lt ch gt DELay MINimum The command queries the minimum marker delay for set ting BB WLNN TRIGger OUTPut DELay FIXed ON Return values lt Minimum gt float Example BB WLNN TRIG OUTP DEL F
60. Duration ID is used to transmit the association identity of the station transmitting the frame or it indicates the duration assigned to the frame type Exactly 16 bit must be entered Parameters lt Did gt integer Range 0000 16 to HFFFF 16 RST 0000 16 IEEE 802 11n IEEE 802 11ac Remote Control Commands p c P H M W p HJ n m Example BB WLNN FBL1 MAC DID HA5A5 16 sets the value of the duration ID field Manual operation See Duration Id on page 48 SOURce lt hw gt BB WLNN FBLock lt ch gt MAC FCONtrol lt FControl gt The command enters the value of the frame control field The frame control field has a length of 2 bytes 16 bits and is used to define the protocol version the frame type and its function etc As an alternative the individual bits can be set with the following commands Parameters lt FControl gt integer Range H0000 16 to HFFFF 16 RST 0000 16 BB WLNN FBL1 MAC FCON 100 16 sets the value of the frame control field Manual operation See Frame Control page 48 SOURce lt hw gt BB WLNN FBLock lt ch gt MAC FCONtrol FDS lt Fds gt SOURce lt hw gt BB WLNN FBLock lt ch gt MAC FCONtrol MDATa lt MData gt SOURce lt hw gt BB WLNN FBLock lt ch gt MAC FCONtrol MFRagments lt MFragments gt SOURce lt hw gt BB WLNN FBLock lt ch gt MAC FCONtrol ORDer O
61. ERE 48 3 623 Beacon dd 51 3 6 3 1 General Beacon Functloris uiid 52 3 6 3 2 Capability Information 53 3 6 3 3 ERP cuc 55 3 6 3 4 HT Capability InformaltlOri c oie teer eec tees rccte 56 3 7 MAC Header HT VHT enn 56 37 1 COMMON Settings idee tid er etd eivai eda e ed ere nee 57 3 7 2 MAG HT eir ere and uad 58 3 7 3 MAC VHT Configuration retreat e 60 3 8 Spatial Mapping tree sens dened 63 3 9 Filter Clipping Settings 2 iere 66 3 9 1 Filter Settings eee 66 3 9 2 Clipping Settings cecinere ecc oc ua e ue edd d 68 3 10 Trigger Marker Clock 70 IAT Tigger 71 310 2 Marker ceri eas 75 3 10 3 Marker 77 37104 Clock SeMS
62. HTC ZLF H1 1 sets the value for the ZLF announcement to 1 ZLF will follow Manual operation See Announcement on page 58 Frame Configuration Settings 4 8 3 5 MAC Header VHT Configuration lt gt lt gt 0 000000 142 SOURce hw BB WLNN FBLock ch MAC VHTControl ACConstraint 142 SOURce hw BB WLNN FBLock ch MAC VHTControl CTYPe eese 143 SOURce hw BB WLNN FBLock ch MAC VHTControl FTTYpe esse 143 SOURce hw BB WLNN FBLock ch MAC VHTControl GIDH esses 143 SOURce hw BB WLNN FBLock ch MAC VHTControl HVINdicator ssss 144 lt gt lt gt 144 lt gt lt gt 144 lt gt lt gt 144 lt gt lt gt 1 145 5 lt gt lt gt
63. Index k 20 Remote command SOURce lt hw gt BB WLNN PRESet on page 84 Save Recall Calls the Save Recall menu From the Save Recall menu the File Select windows for saving and recalling IEEE 802 11 WLAN configurations and the File Manager can be called IEEE 802 11 WLAN configurations are stored as files with the predefined file extension wlann The file name and the directory they are stored are user definable The complete settings in the IEEE 802 11 WLAN menu are saved and recalled Recall WLAN Opens the File Select window for loading a saved IEEE 802 11 setting WLAN configuration The configuration of the selected highlighted file is loaded by press ing the Select button General Settings for WLAN Signals Save WLAN Opens the File Select window for saving the current IEEE 802 11 setting WLAN 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 The Fast Save checkbox determines whether the instrument per forms 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 Fast Save is not affected by the Preset function File Manager Calls the File Manager The File Manager is used to copy delete and rename files and
64. Parameters lt CCPRequest gt 0 1 OFF ON RST 0 Example BB WLNN FBL1 BFC CAP CPR Tells the associated stations that contention free poll CF poll is requested Manual operation See Capability Information Parameters on page 54 Frame Configuration Settings SOURce lt hw gt BB WLNN FBLock lt ch gt BFConfiguration CAPability ESS lt CESS gt Informs the associated stations if the network is an ESS type network Parameters lt CESS gt 0 1 RST 1 Example BB WLNN FBL1 BFC CAP ESS ON Informs the associated stations that the network is an ESS type network Manual operation See Capability Information Parameters on page 54 SOURce lt hw gt BB WLNN FBLock lt ch gt BFConfiguration CAPability IBACk lt IBACk gt Informs the associated stations if immediate block Ack is allowed Parameters lt IBACk gt 0 1 RST 0 Example BB WLNN FBL1 BFC CAP IBACk ON Informs the associated stations that immediate block Ack is allowed Manual operation See Capability Information Parameters on page 54 SOURce lt hw gt BB WLNN FBLock lt ch gt BFConfiguration CAPability IBSS lt CIBSs gt Informs the associated stations if the network is an IBSS type network Parameters lt CIBSs gt 0 1 OFF ON RST 0 Example BB WLNN FBL1 BFC CAP IBSS Informs the associated stations that the network is an IBSS type network Manual operation See Capability Informati
65. SOURce lt hw gt BB WLNN FBLock lt ch gt MAC SCONtrol FRAGment on page 135 SOURce lt hw gt BB WLNN FBLock lt ch gt MAC SCONtrol SEQuence on page 136 Increment Every Defines the number of packets required to increment the counter of the fragment bits or the sequence bits of the sequence control Remote command SOURce lt hw gt BB WLNN FBLock lt ch gt MAC SCONtrol FRAGment INCRement on page 135 SOURce lt hw gt BB WLNN FBLock lt ch gt MAC SCONtrol SEQuence INCRement on page 135 Header FCS Configuration for Frame Block HT Config Calls the menu for configuring the MAC HT High Throughput Note Only the Physical Modes gt Mixed Mode or Physical Modes gt Green Field QoS Data frames provide the HT or VHT transmission technology For Physical Modes gt Legacy this configuration field is not indicated The dialog is described in chapter 3 7 MAC Header HT and VHT Configuration on page 56 Remote command n a Frame Body Indicates the length of the user data frame body Remote command n a FCS Indicates the length of the check sum Remote command n a 3 6 3 Beacon Settings A beacon frame is a managment frame that contains all the information about a net work The beacon settings are used to define the timestamp the beacon interval the SSID the supported rate etc They also comprise the capability
66. This command indicates to the receiver whether frequency domain smoothing is rec ommended as part of channel estimation Frame Configuration Settings Parameters lt SMOothing gt OFF ON ON Indicates that channel estimate smoothing is recommended OFF Indicates that only per carrier independent channel unsmoothed estimate is recommended RST 1 Example BB WLNN FBL SMO switches on smoothing Manual operation See Smoothing on page 44 SOURce lt hw gt BB WLNN FBLock lt ch gt SSTReam lt SStream gt The command sets the number of the spatial streams For physical mode LEGACY only value 1 is valid For Tx Mode HT Duplicate only value 1 is valid In all other cases the number of spatial streams depends on the number of antennas configured with command SOURce BB WLNN ANTenna MODE Parameters lt SStream gt integer Range 1 to 8 RST 1 Example BB WLNN FBL5 SSTR 4 sets the number of spatial streams to 4 Manual operation See Spatial Streams on page 38 SOURce lt hw gt BB WLNN FBLock lt ch gt STBC STATe The command queries the status of the space time block coding Return values lt State gt INACtive ACTive Example BB WLNN FBL5 STBC STAT queries the status of the space time block coding Usage Query only Manual operation See Space Time Block Coding on page 39 SOURce lt hw gt BB WLNN FBLock lt ch gt STSTream lt Ststream gt The command sets th
67. VHT Recommended VHT Indicates the recommended VHT Link adaption using the N STS Nsrs VHT format of the HT Control field MCS Recommended MCS Indicates the recommended VHT MCS Link adaption using the feedback VHT format of the HT Control field BW Bandwidth of the recom MFB 1 mended MCS If the unsolicited MFB subfield is set to 1 the BW subfield con tains the bandwidth of which the recommended MCS is intended for Link adaption using the VHT format of the HT Control field The BW subfield is set as follows e O0for20MHz e 1for40 MHz e 210780 MHz e 160 MHz and 80 80 MHz MFB 1 If the Unsolicited MFB subfield is set to 0 the BW subfield is reserved and set to 0 SNR Average SNR Indicates the average SNR which is an SNR averaged over data subcarriers and spatial streams Link adaption using the VHT for mat of the HT Control field Remote command SOURce lt hw gt BB WLNN FBLock ch MAC VHTControl MFB on page 144 MFSI GID L 0 If the Unsolicited MFB subfield is to 0 the MFSI GID L subfield contains the received value of MSI contained in the frame to which the MFB information refers MFB 1 The MFSI GID L subfield contains the lowest 3 bits of Group ID of the PPDU to which the unsolicited MFB refers Remote command SOURce lt hw gt BB WLNN FBLock ch VHTControl MGL on page 144 MSI 0 When the subf
68. WLNN FBLock lt ch gt DATA LENGth page 118 Scrambler Selects the different options for the scrambler OFF The scrambler is deactivated Random available for Tx Mode gt CCK PBCC Init The scrambler is activated The initialization value of the scrambler is selected at random Each frame has a different random initialization value This value is also dif ferent in case of successive recalculations with the same setting parameters so that different signals are generated for each calcula tion On User Init not available for Tx Mode CCK PBCC The scrambler is activated The initialization value of the scrambler is set to a fixed value that is entered in the Scrambler Init hex This value is then identical in each generated frame ON available only for Tx Mode CCK PBCC The scrambler is activated Preamble available only for Tx Mode CCK PBCC Only The scrambler is activated Only the preamble is scrambled Remote command SOURce lt hw gt BB WLNN FBLock ch SCRambler MODE on page 125 Ch Bandwidth in Non HT available only for Tx Mode VHT PPDU Configuration This parameter is used to modify the first 7 bits of the scrambling sequence to indicate the duplicated bandwidth of the PPDU NON HT20 Indicates 20 MHz 40MHz 80MHz or 160 8080 MHz channel 40 80 160 bandwidth of the transmitted packet Not present Channel bandwid
69. available frame blocks MPDU lt st gt 1 10 available MPDUs Placeholder root For commands that read out or save files in the default directory the default directory is set using command MMEM CDIRectory The examples in this description use the place holder root in the syntax of the command e selecting the internal hard disk of a Windows instrument E N for selecting the memory stick which is inserted at the USB interface of a Windows instrument e var user for selecting the internal flash card of a Linux instrument e 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 following commands specific to the IEEE 802 11 WLAN are described here General Commands S90URceshw BBIWENEBIBVIGI
70. be trans mitted after the frame 0 will follow 1 NDP will follow Remote command SOURce lt hw gt BB WLNN FBLock lt ch gt MAC HTControl NDP on 140 SOURce lt hw gt BB WLNN FBLock lt ch gt MAC HTControl ZLF on page 141 CSI Steering Sets the position of the CSI feedback 2 bit 00 CSI 01 uncompressed Steering Matrix Header HT Configuration 10 compressed Steering Matrix 11 Reserved Remote command SOURce hw BB WLNN FBLock ch MAC HTControl CSISteering on page 138 Reserved This signal field 2 bit is currently defined but not used Remote command SOURce lt hw gt BB WLNN FBLock lt ch gt MAC HTControl SREServed on page 141 SOURce lt hw gt BB WLNN FBLock lt ch gt MAC HTControl FREQuest on page 138 Calibration Sequence Identifies the calibration sequence 2 bit The field is included in each frame within the calibration procedure Its value remains unchanged during one calibration procedure and is incremented each time a new calibration procedure starts Remote command SOURce lt hw gt BB WLNN FBLock lt ch gt MAC HTControl CALibration SEQuence on page 138 Calibration Position Sets the position in the Calibration Sounding Exchange sequence 2 bit 00 Not a calibration frame Default setting 01 Calibration Start 10 Sounding Response 11 Sounding Complete Remote co
71. ch gt BFConfiguration CAPability CPRequest 149 SOURce hw BB WLNN FBLock ch BFConfiguration CAPability ESS 150 SOURce lt hw gt BB WLNN FBLock lt ch gt BFConfiguration CAPability IBACKk 150 SOURce hw BB WLNN FBLock ch BFConfiguration CAPability IBSS 150 SOURce lt hw gt BB WLNN FBLock lt ch gt BFConfiguration CAPability DBACKk 150 SOURce hw BB WLNN FBLock ch BFConfiguration CAPability DOFDm 151 SOURce hw BB WLNN FBLock ch BFConfiguration CAPability PBCC 151 SOURce hw BB WLNN FBLock ch BFConfiguration CAPability PRIVacy 151 SOURce hw BB WLNN FBLock ch BFConfiguration CAPability QOS 152 SOURce lt hw gt BB WLNN FBLock lt ch gt BFConfiguration CAPability RMEasurement 152 SOURce lt hw gt BB WLNN FBLock lt ch gt BFConfiguration CAPability SMGMt 152 SOURce hw BB WLNN FBLock ch BFConfiguration CAPability SPReamble 152 SOURce lt hw gt BB WLNN FBLock lt ch gt BFConfiguration CAPability SSTime 153 SOURce lt hw gt BB WLNN FBLock lt ch gt BFConfiguration HTCapability GF leld 153 SOURce lt hw gt BB WLNN FBLock lt ch gt BFConfiguration HTCapability S TATe 153 SOUR
72. diversity scenario with three transmis sion antennas Tx 1 Tx 3 and one receiving antenna Rx 1 The channel is represen ted by the weight coefficients w1 w3 2 Tx3 The R amp S Signal Generator provides the possibility to weight sum and map the ated Tx antenna signals to the output s of the signal generator i e to simulate a fre quency flat MIMO channel conditions for single carrier analysis e g BER tests Typical Workflows Tx1 Tx2 Tx3 Tx4 w1 w2 w3 Rx1 signal generator output gt 1st baseband R amp S Signal Generator 1 Rx2 signal generator output gt 2nd baseband k Rx3 signal generator output gt 3rd baseband R amp S Signal Generator 2 Rx4 signal generator output gt 4th baseband wt w2 3 1 2 Tx3 Tx4 The R amp S Signal Generator generates the WLAN 802 11n 802 11ac 802 11p signal of one Rx antenna per baseband path Hence two two path instruments are required for the Mx4 MIMO receiver testing and respectively one two path instrument or two one path instruments for the Mx2 MIMO receiver testing To generate a realistic WLAN 802 11n 802 11ac 802 11p MIMO signal under static conditions configure the instrument s as follows 1 In the Frame Block Configuration dialog set the Std for the required standard 2 Use the default Frame Block Configuration settings or adjust them as required 3 Use the default PPDU Configuration settings or adju
73. gt 5 eene 136 5 lt gt lt gt 136 5 lt gt lt gt 2 2 0 142 lt gt lt gt 2 142 SOURce hw BB WLNN FBLock ch MAC VHTOControl CTYPe sss 143 5 lt gt lt gt 2 143 5 lt gt lt gt 2 2 143 SOURce hw BB WLNN FBLock ch MAC VHTOControl HV INdicator es 144 SOURce hw BB WLNN FBLock ch MAC VHTOControl MFB esses SOURce lt hw gt BB WLNN FBLock lt ch gt MAC VHT Control MGL essem SOURce lt hw gt BB WLNN FBLock lt ch gt MAC VHT Control MRQ essent SOURce lt hw gt BB WLNN FBLock lt ch gt MAC VHT Control MSI essen SOURce lt hw gt BB WLNN FBLock lt ch gt MAC VHTControl RDGMore SOURce lt hw gt BB WLNN FBLock lt ch gt MAC VHT Control lt gt
74. gt MAC VHTControl HVINdicator The command queries the used format HT or VHT Return values HtVhtlndicator integer Example BB WLNN FBL MAC VHTC HVIN Response 1 VHT format is used Usage Query only Manual operation See HT VHT on page 63 SOURce lt hw gt BB WLNN FBLock lt ch gt MAC VHTControl MFB lt Mfb gt The command sets the MFB subfield This subfield contains the recommended MFB The value of MCS 15 and VHT N_STS 7 indicates that no feedback is present See also table 3 3 for definition of the MFB subfield Parameters lt Mfb gt integer Example BB WLNN FBL MAC VHTC MFB B111111111111111 15 sets the information for the MFB subfield Manual operation See MFB on page 61 SOURce lt hw gt BB WLNN FBLock lt ch gt MAC VHTControl MGL lt MfsiGidL gt The command determines the information of the MFSI GID L subfield 0 If the Unsolicited subfield is set to 0 the MFSI GID L subfield contains the received value of MSI contained in the frame to which the MFB information refers MFB 1 The MFSI GID L subfield contains the lowest 3 bits of Group ID of the PPDU to which the unsolicited MFB refers Parameters lt MfsiGidL gt integer Example BB WLNN FBL MAC VHTC MGL 8111 3 sets the information for the MFSI GID L subfield Manual operation See MFSI GID L on 62 SOURce lt hw gt BB WLNN FBLock lt ch gt MAC VHTControl MRQ lt Mrq gt The command determines the
75. hw gt BB WLNN PRESet Sets the parameters of the digital standard to their default values RST values speci fied for the commands Not affected is the state set with the command SOURce hw BB WLNN 5 Example SOURce BB WLNN PRESet Usage Event Manual operation See Set to default on page 24 General Commands SOURce lt hw gt BB WLNN SETTing CATalog The command reads out the files with IEEE 802 11 settings in the default directory The default directory is set using command MMEM CDIRectory Only files with the file extension wlann will be listed Return values lt Catalog gt string Example MMEM CDIR root wlann sets the default directory to lt root gt wlann BB WLNN SETT CAT reads out all the files with IEEE 802 11 settings in the default directory Response wlann 1l wlann 2 the files wlann1 and wlann2 are available Usage Query only Manual operation See Save Recall on page 25 SOURce lt hw gt BB WLNN SETTing DELete Filename The command deletes the selected file with IEEE 802 11 WLAN 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 w1ann are listed and can be deleted Setting parameters Filename string Example BB WLNN SETT DEL wlann 1 deletes file wlann_ 1
76. information and the ERP parameters Header and FCS Configuration for Frame Block gt access this dialog select IEEE 802 11 gt Frame Block Configuration gt con gt Config gt Configure Beacon Frame amp IEEE 802 11 WLAN Beacon Frame Configuration for Frame Block 1 Address 1 hex SA hex BSSID hex 1234 5678 90 09 8765 4321 6 bytes 6 bytes 100 000 000 ms Ronde amp Schwarz Supported Rates 8 12 9824 B048 606 0 IBSS ATIM Window hex 0000 ERP Parameters Barker Preamble Mode Use Protection r NonERP Present 3 6 3 1 General Beacon Functions Timestamp hex Updates the local clock of a station the timing synchronization function TSF of a frames source after receiving a beacon frame Remote command SOURce lt hw gt BB WLNN FBLock lt ch gt BFConfiguration TSTamp on page 148 Beacon Interval Defines the time interval between two beacon transmissions in ms Remote command SOURce lt hw gt BB WLNN FBLock lt ch gt BFConfiguration BINTerval on page 146 SSID Specifies the desired service set identifier SSID or the wildcard SSID The maximal allowed length is 32 characters Remote command SOURce lt hw gt BB WLNN FBLock lt ch gt BFConfiguration SSID on 148 3 6 3 2 Header FCS Configuration for Frame Block SupportedRate Contains the set of data rates that are supporte
77. lt dir gt 1 8 Return values lt gt BB WLNN FBL1 SMAP ROW2 COL2 0 queries the time shift value of element Q for row 2 column 2 Usage Query only Manual operation See Transmit Matrix on page 66 Frame Configuration Settings List of Commands SOURceshw BB WENN ANTenna MODBE 2 rre rrt teret ni ee Een 107 SOURCeshw BB WENN AN TentiaiSYS Tem ise eas uh ern eph dito che eH echa tace par Fen canoe Po CIE 107 5 lt gt lt gt 108 5 lt gt lt gt 108 SOURce hw BB WLNN ANTenna TCHain ch TX dir IMAGinary sse 109 SOURce lt hw gt BB WLNN ANTenna TCHain lt ch gt TX lt dir gt MAGNitude 109 lt gt lt gt lt gt 5 109 lt gt lt gt lt gt 108 SOURceshw BB WLNN BWidlhi uan SOURceshw BB WENN GFBLOCK nonae SOURceshw TBB WENN GLEIPping EEMel rie eu hr Erste ea a
78. lt hw gt BB WLNN FBLock ch CODing on page 117 Encoders Displays the number of encoders to be used This value depends on the data rate For data rate 300 Mps this value is 1 Otherwise the number of encoders is 2 Remote command SOURce lt hw gt BB FBLock lt ch gt CODing ENCoder on page 117 Cod Rate Selects the coding rate Remote command SOURce lt hw gt BB WLNN FBLock ch CODing RATE on 117 PPDU Configuration Guard Selects whether a long or short guard interval is used for the OFDM guard In Physical Mode gt Green Field Legacy only long guard intervals are possible In this case the field is read only Remote command SOURce lt hw gt BB WLNN FBLock ch GUARd page 120 3 4 1 4 PSDU Bit Rate CCK PBCC Provided are the following settings PSDU Bit Rate available only for Tx Mode CCK PBCC Selects the bit rate of the PSDU The data rates available are 1 Mbps 2 Mbps 5 5 Mbps 11 Mbps and 22 Mbps The 1 Mbps data rate is only available if the long PLCP format has been selected The selection of the data rate also determines the possible modulation modes The following table shows the correlation between data rate and modulation Data rate Possible modulation mode 1 Mbps Barker Sequence DBPSK the information data sequence is spread with an 11 chip Barker sequence chip rate is 11 Mcps
79. only 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 arker Mode Marker 1 Restart 2 Frame Frame Index 4 Marker 3 Frame Block Frame Block Index 11 Marker 4 On Off Ratio 1 Samples Off Time 1 Samples The Marker Delay section is where marker signal delay be defined either with out restriction or 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 0 000 Samples h reme Doo m 0 2000 Samples 0 000 samples on 2000 Samples 0 000 Samples m De CoD Rc TE GCSE BH nnn 0 2000 Samples Fix Marker Delay To Current Range 3 10 1 Trigger Marker Clock Settings The Clock Settings section is where the clock source is selected and in the case of an external source the c
80. p Signal for Receiver Test under Real Word 20 WLAN User 4 1 11 23 General Settings for WLAN 6 11 1 21 23 Transmit Antenna 0 4 4000 29 Antenna and Mapping pec a eds 29 Transmission Chain 29 Frame Block nennen nennen nnn nnn 31 PPDU Ae a aa 36 General ER FU UE 38 EE 38 User erf 39 Modulation and Coding 40 PSDU Bit Rate 0 0 0000 ee enne eene nennen nennen 41 Data 42 Header Settings once ian netu teta 44 A MPDU Settings iere iii d tine EEn pe 45 3 6 MAC Header and FCS Configuration for Frame 47 3 61 Header and FCS iei ANE vh dae 47 3 6 2 802 11 MAG Frame Field Lear e ceres cde era aet ced a rede d E
81. page 153 SOURce lt hw gt BB WLNN FBLock ch BFConfiguration CAPability QOS on 152 Spectrum Mgmt Spectrum management is enabled the process of regulating the use of radio frequencies SOURce lt hw gt BB WLNN Channel Agil ity Channel agility is enabled overcomes some inherent difficulty with a tone jammer PBCC Packet binary convolutional coding PBCC is allowed a modulationmode for IEEE 802 119 FBLock lt ch gt BrConfiguration CAPability SMGMt on page 152 SOURce lt hw gt BB WLNN FBLock lt ch gt BFConfiguration CAPability CAGility on page 149 SOURce lt hw gt BB WLNN FBLock ch BFConfiguration CAPability PBCC on page 151 Header FCS Configuration for Frame Block Function name If enabled this function indicates that SCPI command Short Pream ble Short preamble is allowed uses 56 instead of 128 bits for the sync field Created to improve WLAN efficiency SOURce lt hw gt BB WLNN FBLock lt ch gt BFConfiguration CAPability SPReamble on page 152 Privacy Privacy mode is enabled thus encryption is required for all data frames SOURce lt hw gt BB WLNN FBLock lt ch gt BFConfiguration CAPability PRIVacy on page 151 CF Poll Request Contention free poll is requested indicates how the AP handles poll requests SOURce lt hw gt
82. result in a shift back of the marker edge Rising Edge Shift 15 Samples Falling Edge Shift Samples o t ri E g 2 E E 5 E a a Level shifted 9 oO Fig 3 5 Frame active Part marker and shifting of its rising falling edges 1 Marker shift rising edge 2 Marker shift falling edge Level Start of rising edge Start of falling edge Marker with shifted 9 e Fig 3 6 Frame Inactive Part marker and shifting of its rising falling edges Level 1 Marker shift rising edge 2 Marker shift falling edge Trigger Marker Clock Settings Remote command SOURce lt hw gt BB WLNN TRIGger OUTPut ch FESHift on page 103 SOURce hw BB WLNN TRIGger OUTPut ch RESHift on page 103 Pulse A regular marker signal is generated The clock frequency is defined by entering a divider The frequency is derived by dividing the chip rate by the divider The input box for the divider opens when Pulse is selected and the resulting pulse frequency is displayed below it Frequency 5 500 000 MHz Remote command SOURce lt hw gt BB WLNN TRIGger OUTPut ch PULSe DIVider on page 104 SOURce lt hw gt BB WLNN TRIGger OUTPut lt ch gt PULSe FREQuency on page 104 Pattern A marker signal that is defined by a bit pattern is generated The pat tern has a maximum length of 32 bits and i
83. 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 5 ON Manual operation See Save Recall on page 25 SOURce lt hw gt BB WLNN 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 RST 0 Example SOURce1 BB WLNN STATe ON Manual operation See State page 23 SOURce lt hw gt BB WLNN WAVeform CREate Filename This command creates a waveform using the current settings of the WLAN menu The file name is entered with the command The file is stored with the predefined file extension wv The file name and the directory it is stored in are user definable 4 2 Filter Clipping Settings Setting parameters Filename string Example MMEM CDIR root waveform sets the default directory to lt root gt waveform BB WLNN WAV CRE wlann 1 creates the waveform file w1ann 1 wv in the default directory Usage Setting only Manual operation See Generate Waveform File on page 27 Filter Clipping Settings SOURcexhw BB WENN CLEIPpinig L EVel i icio aacra ico tee seo tee a ocupan 87 lt gt 88
84. time to 100 ns Manual operation See Transition Time on page 44 SOURce lt hw gt BB WLNN FBLock lt ch gt UINDex lt UIND gt Defines the currently generated user In activated Multi User MIMO only one user can be generated at a time This parameter selects the generated one out of four avaliable users 4 8 2 Frame Configuration Settings Parameters lt UIND gt UIDXO UIDX1 UIDX2 UIDX3 RST UIDXO Example BB WLNN BB WLNN FBL1 UIND UIDX1 selects the generated user with index 1 Manual operation See User Index on page 39 MPDU Configuration SOURce hw BB WLNN FBLock ch MPDU COUNL eese 129 SOURce hw BB WLNN FBLock ch MPDU sst DATA DSELection sssses 129 SOURce hw BB WLNN FBLock ch MPDU sst DATA LENGth eene 130 5 00 lt gt lt gt 0 lt gt 130 5 0 lt gt lt gt 0 lt gt 0 130 lt gt lt gt 131 SOURce lt hw gt BB WLNN FBLock lt ch gt MPDU COUNt Count Determines the number of MPDUs in the frame Parameters Count
85. 121 SOURce hw BB WLNN FBLock ch MU sstO0 GID essere 121 5 lt gt lt gt 0 lt 610 gt 5 75 020 0 1 121 lt gt lt gt 22 2 2 ananas nhan 122 SOURce hw BB WLNN FBLock ch PAID PATTern eese eene 122 50 lt gt lt gt nnne 122 50 lt gt gt 123 lt gt lt gt 123 lt gt lt gt 00 123 SOURce hw BB WLNN FBLock ch PSDU BSPReading STATe sss 124 lt gt lt gt 00 124 lt gt lt gt 5 125 lt gt lt gt 126 5 lt gt
86. 40 MHz VHT 80 MHz VHT 80 80 MHz Additional support of the CCK and PBCC frames in accordance with IEEE 820 11a b g standard e Support of STBC Space Time Block Coding and Spatial Multiplexing Up to 8 spatial streams all supported channel widths Multi User MIMO available with 2 or more total spatial streams Configurable number of spatial streams space time streams and additional spatial streams as well as configurable modulation per spatial stream e Support of short guard interval Configurable state of the scramble interleaver time domain windowing and chan nel coding Configurable PPDU MAC header and FCS e Integrated frame block concept for the generation of sequence of cascaded frame blocks with different configurations and data rates e Support of simple diversity and MIMO tests Frequency Flat MIMO channel simula tion without additional channel simulator Signal Overview e Simulation of real time MIMO channel condition for instruments equipped with the fading options R amp S SMx AMU K74 B14 B15 2 1 Signal Overview IEEE 802 11n is the extension of the WLAN IEEE 802 11a g standard to nominal peak data rates of 600 Mbps Like IEEE 802 11a g IEEE 802 11n is also based on OFDM Additionally IEEE 802 11n uses MIMO technology up to 40 MHz bandwidth and spe cial coding for increased throughput The extension towards higher data rates is also known as high throughput mode HT mode of 802 11n wh
87. B WLNN FBL1 MAC HTC CSIS 4H1 2 sets the value for the CSI steering to 01 uncompressed Steer ing Matrix Manual operation See CSI Steering on page 58 SOURce lt hw gt BB WLNN FBLock lt ch gt MAC HTControl FREQuest lt FRequest gt The command sets the value for the feedback request 00 no request 01 unsolicited feedback only Frame Configuration Settings 10 immediate feedback 11 aggregated feedback Parameters lt FRequest gt integer Range 2 to H3 2 Example BB WLNN FBL1 MAC HTC FREQ H2 2 sets the value for the feedback request to 10 immediate feed back Manual operation See Reserved on page 59 SOURce lt hw gt BB WLNN FBLock lt ch gt MAC HTControl HVINdicator The command queries the used format HT or VHT Return values lt HTVHT gt integer Example BB WLNN FBL MAC HTC HVIN Response 1 HT format is used Usage Query only Manual operation See HT VHT on page 60 SOURce lt hw gt BB WLNN FBLock lt ch gt MAC HTControl LAControl lt LaControl gt The command sets the value for the Link Adaption Control BO 1bit MA MA payload When the MA Management Action field is set to 1 the payload of the QoS Null Data MPDU Medium Access Controller Protocol Data Unit is interpreted as a payload of the management action frame 1 1bit Sounding Request 1 Request to the responder to transmit a sounding PPDU Physical layer Protocol Data Unit B2
88. BB WLNN 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 between each two consecutive slave instruments must have the same length and type Avoid unnecessary cable length and branching points Antenna Configuration Settings Parameters Mode NONE MASTer SLAVe NONE The instrument is working in stand alone mode MASTer The instrument provides all connected instrument with its syn chronization including the trigger signal and reference clock signal SLAVe The instrument receives the synchronization and reference clock signal from another instrument working in a master mode RST NONE Example BB WLNN CLOC SYNC MODE MAST the instrument is configured to work as a master one Manual operation See Sync Mode on page 78 4 6 Antenna Configuration Settings SOURce hw BB WLNN ANTenna MODE essere rere 107 LSOURce lt hw gt 5 5 107 SOURce hw BB WLNN ANTenna TCHain ch OUTPut DESTination 108 lt gt lt gt 0 108 lt gt
89. Beacon Config ration sc aries d e ene e eda cubus bod ad ed e oz ded 146 General Beacon nennen 146 Capability Information 044808 148 ERP Parameters 153 Spatial Mapping Configuration nine eire a ciet 154 List of feet 159 j me 164 1 1 Documentation Overview Preface Documentation Overview The user documentation for the R amp S Signal Generator consists of the following parts e Online Help system on the instrument e Quick Start Guide printed manual Documentation CD ROM with Online help system chm as a standalone help Operating Manuals for base unit and options Service 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 o
90. Block 3 ode Spatial Expansion Space Time Stream 1 Um Tx When loaded the spatial mapping dialog shows the frame block number for which this spatial mapping dialog is loaded The transmit matrix corresponding to index k will have rows representing the number of transmit antennas and columns resenting the space time streams The text label shows the spatial mapping mode selected in the dialog which is updated whenever the mode changes In case of physi cal layer mode SOUNDING a second sub matrix horizontally sided to the transmit matrix with rows and Ness columns representing the number of extended spatial streams will be used as a transmit matrix for the Extended Long Training Fields ELTF The values displayed for the transmit matrices are additionally normalized internally so that the expectation of IQ sum power of all antennas is 0 dBr Addition ally for OFF Direct and Spatial Expansion the expected IQ power is the same for all antennas and hence these modes can be intermixed frame blocks for each without caring about any power regulation issue Relative RMS levels are displayed in the dia log for each antenna Mode Selects the spatial mapping mode for the selected frame block Except of the beam forming mode the matrix element values are loaded using Info Class Methods Off available only for Physical Mode gt Legacy frame The spatial mapping mode is switched off a
91. ENN WAVeform CREate rrr th ren nee 86 SOURce lt hw gt BB WENN TRIGger SEQUence rnit Rr Ene 97 Index A AC Constralnt cric a ACC Constraint Address State Addresses Antenna Mode Duc ARB eee Arm i Arm Trigger e WLAN uie one eor ge troc 92 B emp Baseband filter 42 e s C Calibration POSIUORD ti rir ceterae 59 Calibration PositionN 400 137 Calibration Sequence rers 59 138 Channel bandwidth in non 42 116 Channel Coding mtr nee rere rrr rne 40 79 Chip Clock Multiplier 79 Clipping Level Clipping Mode us Clipping Settings ron entren nr e rennen 28 Clock iicet eerta 79 Clock parameters 28 Clock Source x9 Coding Rate 40 Coding type 61 143 Control 142 Conventions SGPI COMMAMNGS Coupling Basebands Crest factor Clipping CSI Steering rn reme Current Range without Recalculation
92. ESOURcCeshw BBAWENNECLEIPDIGIS cris eren ertet 88 TYPE 88 SOURce hw BB WLNN FILTer PARameter APCOS25 essem 89 lt gt 2 224 9297 89 SOURce shw BB WLNN FILTer PARameter COSine COFS eee 89 SOURce hw BB WLNN FILTer PARameter GAUSs sse 89 SOURce hw BB WLNN FILTer PARameter LPASs sse 90 5 lt gt _ 5 90 5 lt gt 65 2 0 44 40 90 lt gt 1 2 00 0 91 lt gt 91 SOURcCe hw E BBAVENBESRATQY aes Raton catt eei 91 SOURce hw BB WLNN SRATe VARiation esses nnns 92 SOURce lt hw gt BB WLNN CLIPping LEVel Level Sets the limit for level clipping This value indicates at what point the signal is clipped I
93. Event Manual operation See Execute Trigger on page 28 SOURce lt hw gt BB WLNN TRIGger EXTernal SYNChronize OUTPut Output enabled for Trigger Source External Enables disables output of the signal synchronous to the external trigger event For R amp S SMBV instruments See also Sync Output to External Trigger on page 73 for a detailed description of the applications of this setting Parameters Output Example Manual operation Trigger Settings 0 1 OFF ON The signal calculation starts simultaneously with the external trigger event but because of the instrument s processing time the first samples are cut off and no signal is outputted After elapsing of the internal processing time the output signal is syn chronous to the trigger event OFF The signal output begins after elapsing of the processing time and starts with sample 0 i e the complete signal is outputted This mode is recommended for triggering of short signal sequen ces with signal duration comparable with the processing time of the instrument RST ON BB WLNN TRIG SOUR EXT sets external triggering BB WLNN TRIG EXT SYNC OUTP ON enables synchrounous output to external trigger See Sync Output to External Trigger on page 73 SOURce hw BB WLNN TRIGger OBASeband DELay Delay The command specifies the trigger delay expressed as a number of samples for trig gering by the trigger signal from the
94. FF BB BB_B FILE OFF No mapping takes place BB The IQ chain is output to the baseband A Exactly one output stream can be mapped as Baseband A BB_B The IQ chain is output to the baseband B Exactly one output stream can be mapped as Baseband B FILE The IQ chain is saved in a file RST OFF for antenna 2 8 Baseband for antenna 1 Example BB WLNN ANT TCH1 0UTP DEST BB the IQ chain is saved in a file Manual operation See Output page 30 SOURce lt hw gt BB WLNN ANTenna TCHain lt ch gt OUTPut FSELect lt FSelect gt The command saves the IQ chain in a file Suffix lt ch gt 1 8 Parameters lt FSelect gt string Example BB WLNN ANT TCH1 OUTP FSEL root wlnn l wv saves the IQ chain in the selected file Manual operation See Output on page 30 SOURce lt hw gt BB WLNN ANTenna TCHain lt ch gt TX lt dir gt REAL Real Sets the value for the Real coordinate Antenna Configuration Settings Parameters Real float Range 1000 to 1000 Increment 0 01 Example BB WLNN ANT TCH1 TX2 REAL 500 sets the real coordinate for the selected transmission chain to 500 Manual operation See Real Magnitude on page 30 SOURce lt hw gt BB WLNN ANTenna TCHain lt ch gt TX lt dir gt IMAGinary lt Imaginary gt Sets the value for the Imaginary coordinate Parameters lt Imaginary gt float Range 999 99 to 999 99 Increment 0 01 RST 0 Exa
95. GREEN FIELD The transmit matrix is the product of a CSD matrix and a square matrix formed of othogonal colums as defined in the IEEE 802 11n specification BEAMforming this feature will be supported in further release The transmit matrix is the product of a CSD matrix and the Hadamard unitary matrix The File button is displayed to open a Browse popup A file with source format bmf can be selected for the beamforming file must include 128 4 4 IQ elements corresponding to the sub carriers INDirect only active with physical modes MIXED MODE or GREEN FIELD The transmit matrix is the product of a CSD matrix and the Hadamard unitary matrix RST EXPansion BB WLNN FBL1 SMAP MODE OFF sets the spatial mapping mode to OFF that is the spatial map ping mode is switched off automatically See Mode on page 64 SOURce lt hw gt BB WLNN FBLock lt ch gt SMAPping BSELection lt BSelection gt The command loads the selected file for beamforming Parameters lt BSelection gt string Frame Configuration Settings Example BB WLNN FBL1 PMOD MIX BB WLNN FBL1 SMAP MODE BEAM BB WLNN FBL1 SMAP BSEL root test scpi bmf loads the selected file for beamforming Manual operation See Mode on page 64 SOURce lt hw gt BB WLNN FBLock lt ch gt SMAPping TSHift lt st gt lt TShift gt The command sets the spatial mapping time shift This value is relevan
96. Green Field IEEE 802 11 WLAN B PPDU Configuration for Frame Block 1 Spatial Streams Space Time Streams Modulation and Coding Scheme MCS Data Rate 54 00 Mbps Bits per Symbol 216 Stream 1 Stream 2 aPsk r Stream 4 aPsk Ch Coding Bcc Im Long Data Length 1 024 bytes Scrambler fon User Init Scrambler Init hex Interieaver Active On Service Field hex Time Domain Windowing Active On Transition Time Header Settings pramsenescoracte On Smoothing On Configure MAC Header and FCS Spatial Mapping Spatial Expansion The following figure shows the parameters for a configuration of the Type Data in Physical Mode Mixed Mode and Multi User MIMO function PPDU Configuration IEEE 802 11 WLAN PPDU Configuration for Frame Block 1 Spatial Streams Space Time Streams User Index 13 00 Mbps Bits per Symbol Stream 2 71 Stream 4 71 Stream 6 71 Stream 8 BCC Encoders 2 z Guard Data Length 1024 bytes Scrambler User Init E Ch Bandwidth in Non present 7 Interleaver Active On Time Domain Windowing Active Preamble Header Active On NoTXOPPS Configure Header and FCS Spatial Mapping Spatial Expansion The figure below shows the parameters of a PPDU Configuration for Physical Mode gt Leg
97. IEEE 802 11n IEEE 802 11ac Digital Standard for R amp S9Signal Generators Operating Manual 1171 5519 12 18 5 gt o 8 o 9 o This document describes the following software options R amp S9SMBV K54 K86 1415 8160 xx 1415 8648 xx R amp S SMU K54 K86 1408 7562 02 1408 8552 02 R amp S AMU K54 K86 1402 9705 02 1403 0899 02 R amp S SMATE K54 K86 1404 7951 02 1404 8864 02 R amp S SMJ K54 K86 1409 2458 02 1409 3448 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 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 R amp S SMATE200a is abbreviated as R amp S 5 R amp S SMJ100A is abbreviated as R amp S SMJ R amp S WinIQSIM2 i
98. IX restricts the marker signal delay setting range to the dynamic range BB WLNN TRIG OUTP DEL queries the minimum of the dynamic range Response 0 the minimum for the marker delay setting is 0 samples Usage Query only Manual operation See Current Range without Recalculation on page 78 Marker Settings SOURce lt hw gt BB WLNN TRIGger OUTPut lt ch gt MODE Mode Parameters Mode Example RESTart FBLock FRAMe FAPart PULSe PATTern RATio FlPart TRIGger RESTart A marker signal is generated at the start of each signal sequence period all frame blocks FRAMe Number of Frame Blocks 1 that is a marker signal is gener ated at the start of each frame in the single frame block Other wise the frame block and frame index are entered and the spe cific frame is masked FBLock Number of Frame Blocks 1 that is a marker signal is gener ated at the start of each frame block Otherwise a specific frame block index is given and the whole frame block is marked FAPart Number of Frame Blocks 1 that is a marker signal is gener ated to mark every active part of each frame The active data transfer part PPDU of a frame period is marked with high the inactive part idle time with low This marker can be used to decrease the carrier leakage during inac tive signal parts by feeding it into the pulse modulator Otherwise the frame block and frame in
99. LOCK connector Multiple Sam A multiple of the sample clock is supplied via the CLOCK connector ple the sample clock is derived internally from this The Multiplier window provided allows the multiplication factor to be entered Remote command SOURce lt hw gt BB WLNN CLOCk MODE on page 105 Chip Clock Multiplier Enters the multiplication factor for clock type Multiple Remote command SOURce lt hw gt BB WLNN CLOCk MULTiplier 105 Trigger Marker Clock Settings Measured External Clock Provided for permanent monitoring of the enabled and externally supplied clock signal Remote command CLOCk INPut FREQuency 3 10 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
100. N Sets the IEEE 802 11n standard WAC Sets the IEEE 802 11a c standard RST USER Frame Block Configuration Example BB WLNN FBL1 STAN WN sets the IEEE 802 11n standard Manual operation See Standard on page 31 SOURce lt hw gt BB WLNN FBLock lt ch gt STATe State The command enables the corresponding frame block for transmission Parameters State 0 1 RST ON Example BB WLNN FBL5 STAT ON enables frame block 5 for transmission Manual operation See State on page 35 SOURce lt hw gt BB WLNN FBLock lt ch gt TMODe lt TMode gt The command sets the Tx mode The available Tx modes are dependent on the physi cal mode Parameters lt TMode gt L20 LDUP LUP LLOW HT20 HT40 HTDup HTUP HTLow CCK PBCC V20 V40 V80 V160 V8080 L10 RST HT20 Example BB WLNN FBL5 TMOD HT40 sets the Tx mode to HT 40 MHz Manual operation See Tx Mode on 32 SOURce lt hw gt BB WLNN FBLock lt ch gt TYPE Type The command selects the PPDU type Parameters Type DATA SOUNding BEACon DATA Only Data Long Training Fields are used to probe the channel SOUNding Staggered preambles are used to probe additional dimension of the MIMO channel Only Physical Layer Mode GREEN FIELD is available BEACon Frame type Beacon is used to probe the channel RST DATA Example BB WLNN FBL5 TYPE DATA sets the PPDU type data Frame B
101. PDU Configuration on page 36 Remote command n a Data Rate Mbps Indicates the PPDU data rate Remote command SOURce lt hw gt BB WLNN FBLock ch DATA RATE on page 112 State Enables the corresponding frame block for transmission Remote command SOURce hw BB WLNN FBLock lt ch gt STATe on 114 Append Adds a default frame block behind the selected frame block Remote command SOURce lt hw gt BB WLNN FBLock APPend on page 83 Insert Adds a default frame block before the selected frame block Remote command SOURce lt hw gt BB WLNN FBLock ch INSert on page 83 Delete Deletes the selected frame block Remote command SOURce lt hw gt BB WLNN FBLock lt ch gt DELete on page 83 Copy Copies the selected frame block Remote command SOURce lt hw gt BB WLNN FBLock lt ch gt COPY on page 83 PPDU Configuration Paste Pastes the copied frame block behind the selected frame block Remote command SOURce hw WLNN FBLock lt ch gt PASTe on page 84 3 4 PPDU Configuration In the PPDU Configuration dialog the PPDU configuration for all frames in the selected frame block is done The parameters available for configuration depend on the selected Type Physical Layer and Tx Mode The figure below shows the settings of the PPDU Configuration for Type Sound ing and Physical Mode
102. SCPI command R amp S Signal Generator 1 SOUR BB WLNN SETT STOR 11 Settings wlann settingsl b Connect the USB stick or the USB HDD to USB connector of Instrument 2 and copy the settings file to the instrument s target directory e g c 11 Instrumentl C Load the settings file of R amp S Signal Generator 1 to R amp S Signal Generator 2 SCPI command R amp S Signal Generator 2 SOUR BB WLNN SETT STOR c 11 Instrumentl wlann settingsl Typical Workflows d In the Tx Antenna Setup menu of the second instrument enable the Base band A of the instrument to generate the Tx 3 signal and respectively the Base band B to generate the Tx 4 signal and activate the digital standard in the sec ond one SCPI command R amp S Signal Generator 2 SOUR BB WLNN ANT TCH3 0UTP DEST BB SOUR BB WLNN ANT TCHA4 O0UTP DEST BB B SOUR BB WLNN ANT TCH1 OUTP DEST OFF W W SOUR BB WLNN ANT TCH2 0UTP DEST OFF SOUR BB WLNN STAT ON 5 Sendan external trigger signal 2 2 2 Generating a Realistic MIMO WLAN 802 11n ac p Signal for Receiver Test under Static Conditions This example shows you how to enable the R amp S Signal Generator to generate a WLAN 802 11n 802 11ac 802 11p signal for simple diversity and simulation of fre quency flat MIMO channel conditions No additional channel simulator is necessary for this test application The figure below shows an example of a simple
103. Sert naro to mirer entre er tt en rp orien neos SOURce hw BB WLNN FBLocksch ITIMe iecore n nennen en SOURce lt hw gt BB WLNN FBLock lt ch gt MAC ADDRess lt st gt lt gt lt gt lt 6 gt 5 lt gt lt gt 55 0 lt gt lt gt lt gt lt gt 22 2 2 00 lt gt lt gt lt gt lt gt SOURce lt hw gt BB WLNN FBLock lt ch gt MAC FCONtrol MFRagments 5 lt gt lt gt lt gt lt gt 2 2 133 lt gt lt gt 133 lt gt lt gt
104. T ON activates the sequence control field Manual operation See Sequence Control on page 49 SOURce lt hw gt BB WLNN FBLock lt ch gt MAC STATe State The command activates deactivates the generation of the MAC Header Parameters State 0 1 OFF ON RST 0 Example BB WLNN FBL1 MAC STAT ON activates the generation of the MAC Header Manual operation See MAC Header on page 47 MAC Header HT Configuration SOURce hw BB WLNN FBLock ch MAC HTOControl eese 137 lt gt lt gt 137 SOURce hw BB WLNN FBLock ch MAC HTControl CALibration POSition 137 SOURce hw BB WLNN FBLock ch MAC HTControl CALibration SEQuence 138 SOURce hw BB WLNN FBLock ch MAC HTControl CSlISteering 138 5 lt gt lt gt 138 lt gt lt gt 1 139 5 lt gt lt gt _ 139 lt gt
105. T access point AP allows VHT non AP stations STAs in transmit opportunity TXOP power save mode to enter during TXOP On Indicates that the VHT AP allows VHT non AP STAs to enter doze mode during a TXOP Off Indicates that the VHT AP does not allow VHT non AP STAs to enter doze mode during a TXOP Remote command SOURce hw BB FBLock lt ch gt NTPS on page 122 Configure MAC Header and FCS Calls the menu of the MAC Header and FCS Configuration to configure the MAC of each frame in this frame block The menu is described in chapter 3 6 MAC Header and FCS Configuration for Frame Block on page 47 Remote command n a Spatial Mapping Calls the menu for spatial mapping to configure the spatial mapping to be used for the selected frame block The menu is described in chapter 3 8 Spatial Mapping on page 63 Remote command n a A MPDU Settings This chapter describes the aggregate mac protocol data unit A MPDU settings A MPDU Settings 1 To access this dialog select IEEE 802 11 Frame Block Configuration Select Type Data Select Data gt A MPDU GN Select DList Pattern gt Config The A MPDU Config dialog opens IEEE 802 11 WLAN A MPDU Config Frame Block 1 X This dialog comprises the A MPDU settings Number of MPDUs Determines the number of MPDUS in the frame Remote command SOURce lt hw gt BB WLNN FBLock ch MPDU CO
106. TRIGger EXTernal lt ch gt INHibit lt Inhibit gt The command specifies the number of samples by which a restart is to be inhibited fol lowing a trigger event Parameters lt Inhibit gt integer Range 0 to 67108863 RST 0 Example BB WLNN TRIG SOUR EXT selects an external trigger via the TRIGGER 1 connector BB WLNN TRIG INH 200 sets a restart inhibit for 200 samples following a trigger event Manual operation See Trigger Inhibit on page 74 SOURce lt hw gt BB WLNN TRIGger SEQuence Sequence Selects the trigger mode Marker Settings 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 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 WLNN TRIG ARM EXEC and started again when a trigger event occurs ARETrigger The modulation signal is generated only when a trigger event occurs The device automatically toggles to RETRIG mode Every subsequent trigger event causes a restart Signal generation is stopped with command SOUR BB WLNN TRIG ARM EXEC and started again when a trigger event occurs SINGIe The modulation signal is generated onl
107. UNt on 129 A MPDU Length Indicates the overall A MPDUS length resulting from the Data Length bytes settings of all MPDUs Remote command n a EOF Selects the EOF value Remote command SOURce lt hw gt BB WLNN FBLock ch MPDU EOF on page 131 Data Length bytes Determines the size of the data field in bytes Remote command SOURce hw BB WLNN FBLock ch MPDU st DATA LENGth on page 130 Data Selects the data source Remote command SOURce lt hw gt BB WLNN FBLock ch MPDU st DATA SOURce on page 130 Header FCS Configuration for Frame Block DList Pattern Depending on the selected data source selects a data list or allows entering a user defined bit pattern Remote command SOURce lt hw gt BB WLNN FBLock lt ch gt MPDU lt st gt DATA DSELection on page 129 SOURce hw BB WLNN FBLock lt ch gt MPDU lt st gt DATA PATTern on page 130 3 6 MAC Header and FCS Configuration for Frame Block In the real IEEE 802 11 system a MAC medium access control header is transmitted in the PPDU prior to the actual data section This header comprises the control infor mation of the MAC layer It is also possible to protect the PPDU by a frame checksum These two functions can be controlled in the dialog amp amp IEEE 802 11 WLAN B MAC Header and FCS Configuration for Frame Block 1 Header FCS checksum
108. WLNN FBLock ch SMAPping MODE essere 155 lt gt lt gt 155 lt gt lt gt 5 lt gt 156 5 lt gt lt gt 1 156 SOURce hw BB WLNN FBLock ch SMAPping ROW st COL lt gt 12 156 SOURce hw BB WLNN FBLock ch SMAPping ROW st COL dir Q 157 Frame Configuration Settings SOURce lt hw gt BB WLNN FBLock lt ch gt SMAPping MODE Mode The command selects the spatial mapping mode for the selected frame block Except of the Beamforming mode the matrix element values are loaded through the use of Info Class Methods Parameters Mode Example Manual operation OFF DIRect EXPansion BEAMforming INDirect OFF only LEGACY mode The spatial mapping mode is switched off automatically DIRect only active with physical modes MIXED MODE or GREEN FIELD when The transmit matrix is a CSD matrix that is diagonal matrix of unit magnitude and complex values that represent cyclic shifts in the time domain EXPansion only active with physical modes MIXED MODE or
109. able for the corresponding instruments are listed on the back of the title page Conventions Used in the Documentation 2 IEEE 802 11 WLAN Signal Generation The R amp S Signal Generator provides you with the ability to generate signals in accord ance with the Wireless LAN standards IEEE 802 11a b g n ac The option R amp S SMx AMU K54 offers signal generation according to IEEE 802 11n additionally legacy modes of IEEE 802 11a b g are supported For IEEE 802 11ac sig nal generation option R amp S SMx AMU K86 is required At least one R amp S SMx AMU K54 option must be installed on the respective instrument as a prerequisite R amp S WinlQSIM2 the corresponding R amp S WinIQSIM 2 digital standard option must be o To playback a signal from a waveform file created by the simulation software installed The R amp S Signal Generator supports all mandatory and almost all optional features of the IEEE 802 11 standard The following list gives an overview of the main features e Support of up to eight Tx antennas 20MHz 40 MHz 80 MHz bandwidth with option R amp S SMx AMU K86 Support of all three operation modes Legacy Mixed Mode Green Field e Support of all legacy transmission modes L 20 MHz L Duplicate L Upper L Lower Support of all 11n transmission modes HT 20 MHz HT 40 MHz HT Duplicate HT Upper HT Lower Support of all 11ac transmission modes with option R amp S SMx AMU K86 20 MHz VHT
110. acy and Tx Mode gt CCK PBCC 3 4 1 3 4 1 1 PPDU Configuration E IEEE 802 11 WLAN B PPDU Configuration for Frame Block 1 Stream Settings Spatial Streams 1 Extended Spatial Streams Space Time Streams 1 Space Time Block Coding PSDU Bit Rate CCK PBCC PSDU Bit Rate OFDM 2 PSDU Modulation Barker Seq DOP SK Data Length 1 024 bytes z Service Field Clock Bit Locked P PLCP Format Long PLCP m Scrambler On Header Settings Preamble Header Active On Smoothing On Configure MAC Header and FCS Spatial Mapping Off General Settings This general settings comprises the settings for the configuration of the stream set tings the modulation and coding scheme as well as the PSDU bit rate The parameters available for configuration depend on the selected Type Physical Layer and Tx Mode Stream Settings Provided are the following settings Spatial Streams Enters the number of the spatial streams For Physical Mode gt Legacy only the value 1 is valid For Tx Mode HT Duplicate only the value 1 is valid In all other cases the number of spatial streams depends on the number of antennas configured in the TX Antenna Setup window Remote command SOURce hw WLNN FBLock ch SSTReam on page 127 Space Time Streams Enters the number of the space time streams This value depends on the setting in the Spatial Streams field
111. bandwidth of the transmitted packet OFF Channel bandwidth in Non HT is not present RST OFF Default unit MHz Example BB WLNN FBL1 CBIN B80 selects 80 MHz channel bandwidth of the transmitted packet Manual operation See Ch Bandwidth in Non HT on page 42 SOURce lt hw gt BB WLNN FBLock lt ch gt CODing ENCoder Queries the number of encoders to be used This value depends on the data rate For data rate lt 300 Mps this value is 1 Otherwise the number of encoders is 2 Return values lt Encoder gt E1 E2 E3 E6 E7 E8 E9 E12 E4 E5 E10 E11 Example BB WLNN FBL5 COD ENC queries the number of encoders to be used Usage Query only Manual operation See Encoders on page 40 SOURce lt hw gt BB WLNN FBLock lt ch gt CODing RATE Rate This command selects the coding rate Parameters Rate CR1D2 CR2D3 CR3D4 CR5D6 RST CR1D2 Example BB WLNN FBL5 COD RATE CR1D2 sets the coding rate to CR1D2 Manual operation See Cod Rate on page 40 SOURce lt hw gt BB WLNN FBLock lt ch gt CODing TYPE Type Selects the channel coding Parameters Type OFF BCC RST BCC Example BB WLNN FBL5 COD TYPE OFF no channel coding is used Frame Configuration Settings Manual operation See Channel Coding on page 40 SOURce lt hw gt BB WLNN FBLock lt ch gt DATA BPSymbol Queries the number of data bits sent by an OFDM symbol on all spatial st
112. 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 comprehensive 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
113. be simulated determines the number of the required basebands of one or more instruments since one baseband generates the signal of one Tx antenna This chapter provides examples of some typical generic workflows and setups for working with this option 2 2 1 Generating a 4xN or MIMO WLAN n ac Signal with two R amp S Signal Generators for Transmitter Tests This example shows the connection and configuration of two two path instruments for the generation of WLAN n ac signal for transmitter tests Signal generated in this way can be additionally fed to a fading simulator requires option R amp S SMU AMU K74 B14 B15 for the simulation of realistic MXN MIMO channel conditions This example shows the connection and configuration of two two path instruments for the generation of WLAN n ac signal for transmitter tests Signal generated in this way can be additionally fed to fading simulator requires option R amp S SMU AMU K74 B14 B15 for the simulation of realistic MXN MIMO channel conditions see chapter 2 2 3 Generating a Realistic MXN MIMO WLAN 802 11n ac p Signal for Receiver Test under Real Word Conditions on page 20 The 4xN and 3xN MIMO WLAN n ac signal generation scenario requires two two path instruments Operating Manual 1171 5519 12 18 14 Typical Workflows The instruments have to be configured and connected as described in the following sections Since the configuration and connection of the instruments is iden
114. ben 25 85 Scramiblet e ccrte rr e E an 42 Scrambler Init 2 43 Segment 126 Sequence Control 49 136 Sequence Length Trigger mtn 95 Service Field tm ret metet 44 Service Field Clock Bits CCK PBCC 44 123 Set Synchronization Settings 79 Set Synchronization Settings WLAN 106 default e 224 Signal Duration 22 Signal Duration Unit uc Signal Duration Unit Trigger 96 Single Duration Unit Trigger 95 SMON 44 126 Space Time Block Coding 39 Space time streams 39 121 Space Time Streams nere erret aa 38 Spatial Mapping Beamforming File Selection 155 Spatial Mapping I Value 156 Spatial Mapping 64 155 Spatial Mapping Q Value 157 Spatial Mapping Time Shift ix SPallal Streams Standard Waveform File 27 irit 31 IEEE 802 o d eee 31 2 IEEE 802 11b g 2 91 IEEE 802 11n 2 31 7 141
115. ble of Static or Dynamic bandwidth operation Not present Dynamic bandwidth in Non HT is not present Static The transmitter is capable of static bandwidth operation Dynamic The transmitter is capable of dynamic bandwidth operation Remote command SOURce lt hw gt BB WLNN FBLock lt ch gt DBINonht on 119 3 4 3 PPDU Configuration Service Field hex Enters the value of the service field The standard specifies a default value of 0 Other values can be entered in hexadecimal form for test purposes or future extensions Remote command SOURce hw WLNN FBLock ch SERVice PATTern on 126 Transition Time Sets the transition time when Time Domain Windowing gt Active The transition time defines the overlap range of two OFDM symbols At a setting of 100 ns and if BW 20 MHz one sample overlaps Remote command SOURce lt hw gt BB WLNN FBLock lt ch gt TTIMe on page 128 Service Field Clock Bit available only for Tx Mode CCK PBCC Sets the Locked Clock Bit in Service Field of the PLCP Header Via this flag bit the transmitter indicates whether transmission frequency and symbol rate have been derived from the same oscillator If this is the case locked the bit is set to 1 otherwise not locked to 0 Remote command SOURce lt hw gt BB FBLock ch PLCP LCBit STATe on page 123 PLCP Format available only for Tx Mod
116. ce hw BB WLNN FBLock ch BFConfiguration CAPability APSD lt 5 gt Informs the associated stations if automatic power save delivery APSD energy saving function is supported Frame Configuration Settings Parameters lt CAPSd gt 0 1 OFF ON RST 0 Example BB WLNN FBLOCK1 BFC CAP APSD ON Informs the associated stations that automatic power save deliv ery APSD energy saving function is supported Manual operation See Capability Information Parameters on page 54 SOURce hw BB WLNN FBLock ch BFConfiguration CAPability CAGility lt CCAGility gt Informs the associated stations if channel agility is used Parameters lt CCAGility gt 0 1 OFF ON RST 0 Example BB WLNN FBL1 BFC CAP CAG ON Manual operation See Capability Information Parameters on page 54 Informs the associated stations that channel agility is used SOURce lt hw gt BB WLNN FBLock lt ch gt BFConfiguration CAPability CPOLlable lt CCPollable gt Informs the associated stations if contention free is pollable Parameters lt CCPollable gt 0 1 RST 0 Example BB WLNN FBL1 BFC CAP CPOL ON Informs the associated stations that contention free is pollable Manual operation See Capability Information Parameters on page 54 SOURce lt hw gt BB WLNN FBLock lt ch gt BFConfiguration CAPability CPRequest lt CCPRequest gt Indicates if contention free poll CF poll is requested
117. ce lt hw gt BB WLNN FBLock lt ch gt PSDU BRATe lt BRate gt available only for CCK and PBCC transport modes Sets the PSDU bit rate Frame Configuration Settings Parameters lt gt P1MBPS P2MBPS P5 5MBPS P11MBPS P22MBPS RST 11E6 Example BB WLNN FBL5 PMOD LEG sets the physical mode to LEGACY BB WLNN FBL5 TMOD CCK sets the transport mode BB WLNN FBL5 PSDU BRAT P2MBPS sets the PSDU bit rate Manual operation See PSDU Bit Rate on page 41 SOURce lt hw gt BB WLNN FBLock lt ch gt PSDU BSPReading STATe State available only for CCK and PBCC transport modes Enables disables Barker spreading Parameters State 0 1 OFF ON RST 1 Example BB WLNN FBL5 PMOD LEG sets the physical mode to LEGACY BB WLNN FBL5 TMOD CCK sets the transport mode B WLNN FBL5 PSDU BRAT 2MBPS ets the PSDU bit rate B WLNN FBL5 PSDU BSPR STAT ON enables spreading 0 Manual operation See Barker Spreading on page 41 SOURce lt hw gt BB WLNN FBLock lt ch gt PSDU MODulation available only for CCK and PBCC Tx modes The command queries the modulation type The modulation mode depends on the selected PSDU bit rate which depends on the selected physical layer mode SOUR BB WLNN Return values lt Modulation gt BPSK QPSK DBPSK DQPSK CCK PBCC RST CCK Frame Configuration Settings
118. d block Ack is allowed delayed block Ack is suitable for applications that tolerate moderate latency SOURce lt hw gt BB WLNN FBLock ch BFConfiguration CAPability IBACk on page 150 SOURce lt hw gt BB WLNN DSSS OFDM Direct Sequence Spread Spectrum OFDM is allowed encodes packet data using the DSSS head ers and OFDM encoding of the payload Radio Mea surement Radio measurement is supported for example requests performs and reports radio measurements in supported channels and provides information about neighbor APs FBLock ch BFConfiguration CAPability DBACk on page 150 SOURce lt hw gt BB WLNN FBLock ch BFConfiquration CAPability DOFDm on page 151 SOURce lt hw gt BB WLNN FBLock ch BrFConfiguration CAPability RMEasurement on page 152 APSD Automatic power save delivery APSD is supported energy saving function SOURce lt hw gt BB WLNN FBLock ch BFConfiquration CAPability APSD on page 148 Short Slot Time Short slot time is supported reduces the slot time resulting in higher throughput used at IEEE802 11g The AP only uses short slot time when all clients support short slot time SOURce lt hw gt BB WLNN Qos Quality of service 005 is supported takes care that important applications always get enough band width FBLock ch BFConfiquration CAPability SSTime on
119. d by the AP including indication which rates are part of the BSSBasicRateSet Remote command SOURce lt hw gt BB WLNN FBLock lt ch gt BFConfiguration SRATe on page 147 DSSS Current Channel Indicates the current channel of this direct sequence spread spectrum DSSS net work Remote command SOURce lt hw gt BB WLNN FBLock lt ch gt BFConfiguration DCCHannel on page 147 IBSS ATIM Window hex Contains the set of parameters necessary to support an independent basic service set IBSS The Information field contains the announcement traffic indication message ATIM Window parameter Remote command SOURce lt hw gt BB WLNN FBLock lt ch gt BFConfiguration 1 on page 147 Capability Information Parameters The capability parameters indicate if requested optional capabilities and services are allowed supported or in use For example if DSSS OFDM is enabled the associated stations in the network will be informed that use of direct sequence spread spectrum OFDM modulation DSSS OFDM is allowed Header and 5 Configuration for Frame Block Capability Information Parameters Table 3 2 Functions of capability information parameters Function name If enabled this function indicates that SCPI command Immediate Block Ack Delayed Block Ack Immediate block Ack is allowed suitable for high bandwidth low latency traffic Delaye
120. data rate Usage Query only Manual operation See Data Rate Mbps on page 35 SOURce lt hw gt BB WLNN FBLock lt ch gt ITIMe lt ITime gt Sets the time interval separating two frames in this frame block The default unit for the time interval are seconds However the time interval can be set in milliseconds In this case the unit has to be set Parameters lt gt float Range 0 to 1 Increment 100E 6 RST 100E 6 Frame Block Configuration Example BB WLNN FBL5 ITIMe 0 0025 sets the idle time to 2 5 msec Manual operation See Idle Time ms on page 34 SOURce lt hw gt BB WLNN FBLock lt ch gt PMODe lt PMode gt Selects the preamble design For physical type SOUNDING only GREEN FIELD is available Parameters lt PMode gt LEGacy MIXed GFleld LEGacy Compatible with 802 11 a g OFDM devices For High Throughput HT and 802 11a g OFDM devices GRFlled For HT only networks RST MIXed Example BB WLNN FBL5 PMOD LEG sets the physical mode to LEGACY Manual operation See Physical Mode on 32 SOURce lt hw gt BB WLNN FBLock lt ch gt STANdard Standard Sets the IEEE 802 11 WLAN standard Parameters Standard USER WAG WBG WPJ WN WAC USER Sets a user defined standard WAG Sets the IEEE 802 11a g standard WBG Sets the IEEE 802 11b g standard WCG Sets the IEEE 802 11c g standard WPJ Sets the IEEE 802 11p j standard W
121. destinations Base band File or OFF and makes it possible to combine different Tx antenna sig nals 3 2 1 Antenna and Mapping Setting Antennas Selects the number of transmit antennas to be used Remote command SOURce lt hw gt BB WLNN ANTenna MODE on page 107 Mapping Coordinates Selects the coordinate system of the transmission chain matrix Cartesian Sets the cartesian coordinates system Real Imaginary Cylindrical Sets the cylindrical coordinates system Magnitude Phase Remote command SOURce lt hw gt WLNN ANTenna SYSTem on page 107 3 2 2 Transmission Chain Matrix The transmission chain matrix can be used to adjust the channel coefficients During signal calculation the R amp S Signal Generator evaluates the transmission matrix and takes the phase ratios set into account However the power ratio of the antennas is not considered To enable the R amp S Signal Generator to generate a WLAN signal of antennas with different power level set the power level of the corresponding path to the desired level in the header display of the instrument Transmit Antenna Setup Output Selects the destination of the calculated IQ chains OFF No mapping takes place Baseband The IQ chain is output to the selected baseband Exactly one output stream can be mapped to a baseband File The IQ chain is saved in a file Remote command SOURce hw BB WLNN ANTen
122. dex are entered and the active part of the specific frame is masked PATTern A marker signal is generated according to the user defined pat tern command SOURce BB WLNN TRIGger OUTPut PATTern PULSe A pulsed marker signal is generated The pulse frequency symbol rate divider is defined with the SOUR BB WLNN TRIG PULSe DIVider command and can be queried with the SOUR BB WLNN TRIG OUTP PULSe FREQuency command RATio A marker signal corresponding to the Time Off Time On specifi cations in the commands SOURCe BB WLNN TRIGger OUTPut OFFT and SOURce BB WLNN TRIGger OUTPut ONT is generated TRIGger A received internal or external trigger signal is output at the marker connector RST RESTart BB WLNN TRIG OUTP MODE FRAM selects the frame marker for the corresponding marker signal Marker Settings Manual operation See Marker Mode on page 75 SOURce lt hw gt BB WLNN TRIGger OUTPut lt ch gt ONTime lt gt SOURce lt hw gt BB WLNN TRIGger OUTPut lt ch gt OFFTime lt OffTime gt The command sets the number of samples in a period ON time OFF time during which the marker signal in setting SOURce BB WLNN TRIGger OUTPut MODE RATio on the marker outputs is OFF Parameters lt OffTime gt integer Range 1 to 16777215 RST 1 Example BB WLNN TRIG OUTP OFFT 200 sets an OFF time of 200 samples for the corresponding marker signal Manual op
123. e CCK PBCC Selects the packet type PPDU format with long or short PLCP physical layer conver gence protocol Depending on the selected format the structure modulation and data rate of the PLCP the preamble and the header are modified Remote command SOURce hw WLNN FBLock ch PLCP FORMat on page 122 Header Settings Preamble Header Active Activates deactivates the preamble and signal fields of the frames in the current frame block For Type Sounding the preamble and signal field are always activated and cannot be deactivated Remote command SOURCe lt hw gt BB WLNN FBLock ch 1 STATe on page 123 Smoothing available for all except Tx Mode VHT 3 5 A MPDU Settings Indicates to the receiver whether frequency domain smoothing is recommended as part of channel estimation On Indicates that channel estimate smoothing is recommended Off Indicates that only per carrier independent channel unsmoothed estimate is recommended Remote command SOURce lt hw gt BB WLNN FBLock ch SMOothing on page 126 Partial AID hex available only for Tx Mode VHT Provides an abbreviated indication of the intended recipient s of the frame Remote command SOURce lt hw gt FBLock ch PAID PATTern on page 122 No TXOP PS available only for Tx Mode VHT Indicates whether the VH
124. e WLAN 802 11n 802 11ac 802 11p signal of antennas with different power level set the power level of the corresponding path to the desired level in the header display of the instrument SCPI commands SOUR POW 30 SOUR2 POW 20 Enable signal generation SCPI command SOUR BB WLNN STAT ON The Baseband A of the R amp S Signal Generator will generate the Rx signal as a sum of the three Tx signals weighted with the selected coefficients Generating a Realistic MXN MIMO WLAN 802 11n ac p Signal for Receiver Test under Real Word Conditions for R amp S SMU and R amp S AMU instruments only The simulation of real time MIMO channel condition requires instruments equipped with the fading options R amp S SMU AMU K74 B14 B15 The instrument s have to be configured as follows 1 Enable the instrument to generate 2xN 3xN or 4xN MIMO WLAN 802 11n 802 11ac 802 11p signal as described in chapter 2 2 1 Generating 4 or 3xN Typical Workflows MIMO WLAN n ac Signal with two R amp S Signal Generators for Transmitter Tests on page 14 2 Enable the instrument to generate 2xN 3xN or MIMO fading signal Refer to section Multiple Input Multiple Output in the description of the Fading Simulator Typical Workflows General Settings for WLAN Signals 3 WLAN User Interface Standards gt access the dialog select Baseband Block gt IEEE 802 11 IEEE 802 11 a b g IEEE 802 11 AP T
125. e 66 Remote command n a Trigger Marker Trigger for R amp S SMx and R amp S AMU instruments only Calls the menu for selecting the trigger source for configuring the marker signals and for setting the time delay of an external trigger signal see chapter 3 10 Trigger Marker Clock Settings on page 70 The currently selected trigger source is displayed to the right of the button Remote command n a Execute Trigger R amp S SMx and R amp S AMU instruments only Executes trigger manually A manual trigger can be executed only when an internal trigger source and a trigger mode other than Auto have been selected Remote command SOURce lt hw gt BB WLNN TRIGger EXECute on page 93 Clock R amp S SMx and R amp S AMU instruments only Calls the menu for selecting the clock source and for setting a delay see chapter 3 10 Trigger Marker Clock Settings on page 70 Remote command n a Transmit Antenna Setup 3 2 Transmit Antenna Setup gt To access this dialog select Main Menu gt Transmit Antennas Setup IEEE 802 11 WLAN TX Antenna Setup cartesian Baseband A 0 00 0 00 0 00 0 00 i 0 00 0 00 0 0 00 00 0 00 0 00 1 00 0 00 0 00 00 0 00 0 0 00 00 0 00 0 0 00 00 0 00 1 0 00 00 0 00 0 Tysneniistion Chain Matrix This dialog is used to map the generated Tx chains to different
126. e RDG More PPDU 4 8 4 4 8 4 1 Frame Configuration Settings Manual operation See RDG More PPDU on page 60 SOURce lt hw gt BB WLNN FBLock lt ch gt MAC VHTControl UMFB lt UnsolicitedMfb gt The command sets the Unsolicited MFB subfield Parameters lt UnsolicitedMfb gt integer 0 if the MFB is a response to an MRQ 1 if the MFB is not a response to an MRQ Example BB WLNN FBL MAC VHTC UMFB 81 1 sets the information for the UMFB subfield Manual operation See Unsolicited MFB on page 61 SOURce lt hw gt BB WLNN FBLock lt ch gt MAC VHTControl VREServed lt VhtReserved gt This signal field is currently defined but not used It is set to zero by the transmitter and ignored by the receiver Parameters lt VhtReserved gt integer Manual operation See Rsv on page 63 Beacon Configuration General Beacon Functions SOURce hw BB WLNN FBLock ch BFConfiguration BINTerval sss 146 50 lt gt lt gt 7 147 5 lt gt lt gt 147 5 lt gt lt gt 147 lt
127. e block Standard Selects the IEEE 802 11 WLAN standard After you have set your standard only the for this standard relevant Type Physical Mode and Tx Mode are available see table 3 1 Table 3 1 Availability Standard Type Physical Mode TxMode Standard Type Physical Mode Tx Mode User all all all 11a g Data Beacon Legacy L 20MHz L Duplicate L Upper L Lower 11b g Data Beacon Legacy CCK PBCC 11p j Data Beacon Legacy L 10MHz 11n Data Sounding Beacon Mixed Mode Green HT 20MHz Field HT 40MHz HT Duplicate HT Upper Frame Block Configuration HT Lower 11ac Data Sounding Beacon Mixed Mode VHT 20MHz VHT 40MHz VHT 80MHz VHT 80 80 MHz VHT 160MHz Remote command SOURce hw BB FBLock ch STANdard on 113 Type Selects the PPDU type Data Only Data Long Training Fields are used to probe the channel Sounding Staggered preambles are used to probe additional dimension of the MIMO channel Type gt Sounding is not available for Physical Mode gt Legacy Beacon A frame of type Beacon contains all the information about a net work for example the beacon interval capability information and the IBSS parameter set The access point AP of a service set periodi cally transmits the beacon frame to establish and maintain the net work Remote command SOURce hw
128. e number of the space time streams This value depends on the number of spatial streams defined with command SOURce BB WLNN FBLock SSTReam Changing the number of the Spatial Streams immediately changes the value of the Space Time Streams to the same value Frame Configuration Settings Parameters lt Ststream gt integer Range 1 to dynamic RST 1 Example BB WLNN FBL5 STBC STAT queries the status of the space time block coding Manual operation See Space Time Streams on page 38 SOURce lt hw gt BB WLNN FBLock lt ch gt TDWindowing STATe State The command activates deactivates the time domain windowing Time domain win dowing is a method to influence the spectral characteristics of the signal which is not stipulated by the standard However it does not replace oversampling and subsequent signal filtering Parameters lt State gt 0 1 OFF ON RST 0 Example BB WLNN FBL5 TDW STAT ON activates the time domain windowing Manual operation See Time Domain Windowing Active on page 43 SOURce lt hw gt BB WLNN FBLock lt ch gt TTIMe lt TTime gt The command sets the transition time when time domain windowing is active The transition time defines the overlap range of two OFDM symbols At a setting of 100 ns and if BW 20 MHz one sample overlaps Parameters lt TTime gt float Range 0 to 1000 ns Increment 1 RST 100 ns Example BB WLNN FBL5 TTIM 100 sets the transition
129. ence control field The sequence control field has a length of 2 bytes and is divided in two parts the frag ment number 4 bits and the sequence number 12 bits field A long user data stream to be transmitted is first split up into MSDUs MAC service data units which can either be transmitted as PSDU frames or further divided into fragments The sequence num ber and the fragment number are then used to number the individual subpackets of the user data stream to be transmitted Thus all PSDUs are assigned a consecutive num ber This allows the receiver to arrange the data packets in the correct order to deter mine whether an incorrectly transmitted packet was retransmitted and to find out whether packets are missing If the receiver can detect a packet without an error and does not request a retransmis sion the sequence number is incremented by 1 for each packet the field is reset to 0 at the latest after a count of 4095 The fragment number field is incremented by 1 when another fragment of the current MPDU is transmitted The start count for the transmission normally 0 and the number of packets required to increment the corre sponding counter can be defined for both numbers This is done with the parameters Start Number and Incremented every packet s Header FCS Configuration for Frame Block Example An error free transmission of 50 packets no packet retransmission is to be simulated The sequence numbe
130. enna is done in the Generating a 4xN or 3XN MIMO WLAN n ac Signal with two R amp S Signal Generators for Transmitter Tests Provide an external common trigger source for both baseband paths Triggering is performed automatically such that both basebands are aligned in time Changing of any parameter restarts the signal generation in both paths For description on how to enable two R amp S Signal Generators to simu late an MIMO WLAN signal see chapter 2 2 1 Generating a 4xN or 3xN MIMO WLAN n ac Signal with two R amp S Signal Generators for Transmitter Tests on page 14 OFF Corresponds to normal operation i e independent configuration of both paths Remote command SOURce lt hw gt BB WLNN PATH COUPling STATe page 84 Transmit Antennas Setup Calls the menu for configuring the TX antennas General Settings WLAN Signals The menu is described in chapter 3 2 Transmit Antenna Setup on page 29 Remote command n a Frame Block Configuration Calls the menu for configuring the frame blocks The menu is described inchapter 3 3 Frame Block Configuration on page 31 Remote command n a Filter Clipping Settings Calls the menu for setting baseband filtering and clipping The current setting is dis played next to the button The filter settings are enabled for configuration only for seTransmission Bandwidtht to 20 MHz The menu is described in chapter 3 9 Filter Clipping Settings on pag
131. epeating the same complex numbers modulating the sub carriers of the upper channel on the lower channel Table 2 1 Frequency Domain PHY Operation LM Legacy mode as in IEEE 802 11a g Additionally the CCK and the PBCC frames as in IEEE 802 11b g HT Mode Frequency 20 MHz and 40 MHz 1 4 spatial streams HT Duplicate Mode included Duplicate Non HT Mode IEEE 802 11a OFDM PHY format 20 MHz and 40 MHz dual operation upper channel rotated by 90 relative to lower channel Upper Mode Non HT HT frame in the upper 20 MHz channel Lower Mode Non HT HT frame in the lower 20 MHz channel VHT Mode Frequency 20 MHz 40 MHz and 80 MHz 1 8 spatial streams option R amp S SMx AMU K86 required When operating in the OFDM 20 MHz mode there are 64 sub carriers available the migration to 40 MHz mode offers 128 sub carriers with the same frequency spacing of 312 5 KHz 80 MHz bandwidth is using 256 sub carriers keeping the original fre quency spacing With 160 MHz bandwidth 512 sub carriers apply Signal Generation The generation of an IEEE 802 11n ac signal is done in multiple steps In high through put HT and very high throughput VHT modes the data of a single user is specially coded and transmitted via up to eight Tx antennas In this implementation the mapping of the Tx antennas signals to the output paths of the instrument can be configured This function can be used for the simulation of fre quency fla
132. er Range 1 to H1 1 RST 0 Example BB WLNN FBL1 MAC HTC ACC 0 1 sets the AC signal field to 0 The response may contain data from any TID Manual operation See AC Constraint page 58 SOURce lt hw gt BB WLNN FBLock lt ch gt MAC HTControl CALibration POSition lt Position gt The command sets the value for the calibration position 00 Not a calibration frame Default setting 01 Calibration Start 10 Sounding Response 11 Sounding Complete Frame Configuration Settings Parameters Position integer Range 2 to H3 2 BB WLNN FBL1 MAC HTC CAL POS 0 2 sets the Calibration Position signal field to 00 Not a calibration frame Manual operation See Calibration Position on page 59 SOURce lt hw gt BB WLNN FBLock lt ch gt MAC HTControl CALibration SEQuence lt Sequence gt The command sets the value for the calibration sequence Parameters lt Sequence gt integer Range 2 to H3 2 Example BB WLNN FBL1 MAC HTC CAL SEQ H3 2 sets the value for the calibration sequence Manual operation See Calibration Sequence on page 59 SOURce lt hw gt BB WLNN FBLock lt ch gt MAC HTControl CSISteering lt CsiSteering gt The command sets the value for the CSI steering 00 CSI 01 uncompressed Steering Matrix 10 compressed Steering Matrix 11 Reserved Parameters CsiSteering integer Range 2 to H3 2 Example B
133. eration See Marker Mode on page 75 SOURce lt hw gt BB WLNN TRIGger OUTPut lt ch gt FBINdex Fblndex The command sets the frame block index For this these frame block s a marker sig nal is generated The maximum value depends on the number of the currently active frame blocks max 100 Parameters lt FbIndex gt integer Range 0 to 100 Increment 1 RST 1 Example BB WLNN TRIG OUTP1 FBIN 5 sets the frame block index to 5 Manual operation See Marker Mode on page 75 SOURce lt hw gt BB WLNN TRIGger OUTPut lt ch gt FINDex lt Findex gt The command sets the frame index that is the frame to be marked in the frame block marked with command BB WLNN TRIGger OUTPut FBIndex The maximum value depends the number of frames set with command BB WLNN FBLock FCOunt The maximum value is 1024 Parameters lt gt integer Range 1 to 1024 Increment 1 RST 1 Example BB WLNN TRIG OUTP1 FIND 100 sets the frame index to 100 Marker Settings Manual operation See Marker Mode on page 75 SOURce lt hw gt BB WLNN TRIGger OUTPut lt ch gt FESHift Shift Shifts the falling edge of the marker the specified number of samples Negative values result in a shift back of the marker edge Parameters Shift integer Range 100 to 100 RST 0 Example BB WLNN TRIG OUTP2 FESH 75 Manual operation See Marker Mode on page 75 shifts the falling edge of the marker 2 about 75 sam
134. ereas the non HT mode can be seen as the part of 802 11n which is backwards compatible to 802 11a g IEEE 802 11ac further extends 802 11n to nominal peak data rates of 6240 0 Mbps Like IEEE 802 11a g n IEEE 802 11ac is also based on OFDM Additionally IEEE 802 11ac uses MIMO technology up to 160 MHz bandwidth and special coding for increased throughput The extension towards higher data rates is also known as very high throughput VHT mode of 802 11ac 2 1 1 Operation Modes The IEEE 802 11n standard defined the following three operation modes Legacy mode This mode is provided for backwards compatibility with the IEEE 802 a g standard The mode is also known as Non HT mode Mixed Mode A legacy preamble and header L STF L LTF and L SIG are wrapping the HT part of the frame so that the frame is complying with OFDM PHY and ERP OFDM PHY corresponding to 802 11 a g respectively Green Field In this mode frames are being transmitted in a new high throughput format that does not comply with the legacy mode Green Field is an optional mode The figure 2 1 shows the packet formats of the different operation modes that can be triggered by a device supporting the IEEE 802 11n standard Legacy Mixed Mode Green Field Fig 2 1 PLCP Packet format for IEEE 802 11 Signal Overview The table 2 1 gives an overview of the frequency domain operation modes of the phys ical layer Note that the duplicate mode corresponds to r
135. ers State 0 1 RST OFF Example BB WLNN FBL1 MAC FCS STAT ON activates the calculation of the FCS Manual operation See FCS checksum on page 48 SOURce lt hw gt BB WLNN FBLock lt ch gt MAC QSControl lt QsControl gt The command sets the value for the QoS control field Parameters lt QsControl gt integer Range H0000 16 to HFFFF 16 Example BB WLNN FBL1 MAC QSC H5A5A 16 stets the value for the QoS field Manual operation See QoS Control page 57 SOURce lt hw gt BB WLNN FBLock lt ch gt MAC QSControl STATe State The command enables disables the QoS control Parameters lt State gt 0 1 OFF RST ON Example BB WLNN FBL1 MAC QSC STAT ON enables the QoS control Manual operation See QoS Control page 57 Frame Configuration Settings SOURce lt hw gt BB WLNN FBLock lt ch gt MAC SCONtrol FRAGment INCRement lt Increment gt Defines the number of packets required to increment the counter of the fragment bits of the sequence control Parameters lt Increment gt integer Range 0 to 1024 RST 1 Example BB WLNN FBL1 MAC SCON FRAG INCR 2 two packets are required to increment the counter of the frag ment bits Manual operation See Sequence Control on page 49 SOURce lt hw gt BB WLNN FBLock lt ch gt MAC SCONtrol FRAGment STARt lt Start gt The command enters the start number of the fragment bits of the sequence control
136. ff Frequency Shift 0 00 Sample Rate Variation 20 000 000 000 MHz State Clipping Level Clipping Mode Vector li jql z The dialog comprises the settings necessary to configure the baseband filterand to enable clipping Filter Settings o Filter settings are available only for Transmission Bandwidth set to 20 MHz Filter Clipping Settings Provided are the following settings for configuring the baseband filter Filter Selects the baseband filter Remote command SOURce lt hw gt BB WLNN FILTer TYPE on page 88 Roll Off Factor or BxT Enters the filter parameters The filter parameter offered Roll Off factor or BxT depends on the currently selected filter type The Roll Off Factor affects the steepness of the filter flanks A Roll Off Factor 0 results in the steepest flanks values near to 1 make the flanks more flat D Roll Off Factor 0 c Roll Off Factor 0 22 Roll Off Factor 1 f Hz Fig 3 3 Example of the frequency response of a filter with different Roll Off Factors This parameter is always set to the default for each of the predefined filters Remote command SOURce lt hw gt BB WLNN FILTer PARameter APCO25 on 89 SOURce lt hw gt BB WLNN FILTer PARameter COSine on 89 SOURce lt hw gt BB WLNN FILTer PARameter 5 5 on page 89 SOURce lt hw gt BB WLNN FILTer PARameter PGA
137. gt 117 SOURceshw EBB WENN FBEoCKSCh COPY cnet trt ettet tenni teta pee nhi tes 83 2 2 115 lt gt lt gt 118 5 lt gt lt gt 112 lt gt lt gt 112 lt gt lt gt 118 lt gt lt gt SOURce lt hw gt BB WLNN FBLOckK lt Ch gt DBINOMN Ei 2 12r tnnt nnn enun SOURceshw BB WENN FBLocksche DEbLete eiat ir eterne rrr nas SOURceshws BB WENN FBLockschz DEL te oai irent rte teri re rtr mere eet rre erae SOURce lt hw gt BB WLNN FBLOCK lt Ch gt ESS Dream ta rnnt ntn think n rns SOURceshw BB WLENN FBLocksch FGOwUnl reo arent rep knee rn edis SOURceshw BB WENN FBLocksch GUARG 5 lt gt lt gt 1 5 SOURceshw BB WLNN FBLocksch INSert three ttn er irre SOURceshw BB WENN FBLocksch lIN
138. he dialog is split into several sections for configuring the standard The upper section of the dialog is where the IEEE 802 11 WLAN digital standard is enabled and the trans mission bandwidth is selected A button leads to dialogs for loading and saving the IEEE 802 11 WLAN configuration IEEE 802 11 bj State Off Set To Default SaveRecall Data List Management Generate Waveform File The buttons of the lower dialog section lead to dialogs for the transmission antennas and configuring the frame blocks Transmission Bandwidth 20 MHz Configure Baseband B from Baseband Transmit Antennas Setup TX Antenas 3 Frame Block Configuration Filter Clipping Cosine Clipping Off Trigger Marker Auto Clock Internal The screenshots provided in this description show parameter values that have been selected to illustrate as much as possible of the provided functions and possible inter dependencies between them These values are not necessarily representative of realistic test situations 3 1 General Settings for WLAN Signals This section describes the general IEEE 802 11 WLAN settings like enabling the standard and configuring the transmission bandwidth 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 WLNN STATe on 86 Se
139. ield is 0 the MSI subfield is reserved MRQ 1 When the MRQ subfield is set to 1 the MSI subfield contains a sequence number in the range 0 to 6 that identifies the specific request Remote command SOURce lt hw gt WLNN FBLock lt ch gt MAC VHTControl MSI page 145 MRQ 0 to request MCS feedback solicited MFB Spatial Mapping 1 otherwise Remote command SOURce lt hw gt BB WLNN FBLock lt ch gt MAC VHTControl MRQ on page 144 Rsv This signal field 1 bit is currently defined but not used It is set to zero by the trans mitter and ignored by the receiver Remote command SOURce hw BB WLNN FBLock ch MAC VHTControl VREServed on page 146 HT VHT The subfield indicates the used format HT or VHT 0 indicates use of the HT format 1 indicates use of the VHT format Remote command SOURce lt hw gt BB WLNN FBLock ch MAC VHTControl HVINdicator on page 144 3 8 Spatial Mapping The Wireless LAN standard IEEE 802 11 builds upon previous 802 11 standards by adding MIMO Multiple input multiple output MIMO uses multiple transmitter and receiver antennas for increased data throughput via spatial multiplexing and increased range by exploiting the spatial diversity Mode time shifts and transmit parameters are defined in the Spatial Mapping for Frame Block dialog Spatial Mapping IEEE 802 11 WLAN Spatial Mapping for Frame
140. information of the MRQ subfield Frame Configuration Settings Parameters lt gt integer 0 requests MCS feedback solicited MFB 1 otherwise Example BB WLNN FBL MAC VHTC MRO 81 1 sets the information for the MRQ subfield Manual operation See on page 62 SOURce lt hw gt BB WLNN FBLock lt ch gt MAC VHTControl MSI Msi The command sets the MSI subfield 0 When the subfield is 0 the MSI subfield is reserved MRQ 1 When the MRQ subfield is set to 1 the MSI subfield contains a sequence number in the range 0 to 6 that identifies the specific request Parameters Msi integer Example BB WLNN FBL MAC VHTC MSI 111 3 sets the information for the MFSI GID L subfield Manual operation See MSI on 62 SOURce lt hw gt BB WLNN FBLock lt ch gt MAC VHTControl RDGMore lt VhtRdgMore gt The command issues the reverse direction grant When transmitted by an initiator or a responder this field is interpreted differently Transmitted by Initiator 0 No reverse grant 1 reverse grant is present as defined by the Duration ID field Transmitted by Responder 0 The PPDU carrying the MPDU is the last transmission by the responder 1 The PPDU carrying the frame is followed by another PPDU Parameters lt VhtRdgMore gt integer Example BB WLNN FBL MAC HTC H80000000 32 BB WLNN FBL MAC VHTC RDGM 81 1 sets the value for th
141. ing to a bit pattern Use the Pattern box to define the bit pattern e Data List Select DList A binary data from a data list internally or externally generated Select Select DList to access the standard Select List dialog Select the Select Data List gt navigate to the list file gt Select to select an existing data list Use the New and Edit functions to create internally new data list or to edit an existing one Use the standard File Manager function to transfer external data lists to the instrument See also Main Dialog gt Data List Management Remote command SOURce hw BB WLNN FBLock lt ch gt DATA on page 111 SOURce hw BB WLNN FBLock lt ch gt DATA PATTern on page 112 SOURce lt hw gt BB WLNN FBLock lt ch gt DATA DSELection on page 111 Boost dB Assigns a specific RMS power boost attenuation to the corresponding Frame Block Modulation Frame Block Configuration The power level of a Frame Block Modulation is calculated as sum of the power boost and the power level set in the header of the instrument Note At least one Frame Block should have a power boost set to a 0 dB value for this gated power mode functionality to work properly Remote command SOURce hw FBLock ch BOOSt on page 110 PPDU Calls the dialog for PPDU configuration of the frame blocks The dialog is described in chapter 3 4 P
142. integer Range 1 to 64 RST 1 Example BB WLNN FBL1 MPDU COUN 3 Determines the number of MPDUs in the frame Manual operation See Number of MPDUs on page 46 SOURce lt hw gt BB WLNN FBLock lt ch gt MPDU lt st gt DATA DSELection lt Filename gt Selects the data list for the DLISt data source selection The lists are stored as files with the fixed file extensions dm_iqd directory of the user s choice Parameters Filename string Example BB WLNN FBL1 MPDU1 DATA DLIS Selects the Data Lists data source MMEM CDIR root Lists Selects the directory for the data lists BB WLNN FBL1 MPDU1 DATA DSEL dlistl Selects the dlist1 as the data source This file must be in the directory specified above It must have the file extension dm 1 Frame Configuration Settings Manual operation See DList Pattern on page 47 SOURce lt hw gt BB WLNN FBLock lt ch gt MPDU lt st gt DATA LENGth Length Determines the size of the data field in bytes Parameters Length integer Range 0 to 16384 RST 1024 Example BB WLNN FBL1 MPDU1 DATA LENG 1024 Determines the size of the data field Manual operation See Data Length bytes on page 46 SOURce lt hw gt BB WLNN FBLock lt ch gt MPDU lt st gt DATA PATTern Pattern Determines the bit pattern for the PATTern selection Parameters Pattern 64 bits RST HO 1
143. lock Configuration Manual operation See on page 32 SOURce lt hw gt BB WLNN FBLock lt ch gt COPY Usage Event Manual operation See Copy on page 35 SOURce lt hw gt BB WLNN FBLock lt ch gt DELete Deletes the specified frame block Usage Event Manual operation See Delete on page 35 SOURce lt hw gt BB WLNN FBLock lt ch gt INSert The command adds a default frame block before the selected frame block Example BB WLNN FBL2 INS inserts a default frame block before the selected frame block Usage Event Manual operation See Insert on page 35 SOURce lt hw gt BB WLNN FBLock lt ch gt PASTe Usage Event Manual operation See Pasie on page 36 SOURce lt hw gt BB WLNN FBLock APPend The command appends a frame block to the end of the frame blocks list Example BB WLNN FBL APP appends a frame block to the end of the frame blocks list Usage Event Manual operation See Append on page 35 Frame Configuration Settings 4 8 Frame Configuration Settings 4 8 1 Frame Block PPDU Configuration lt gt lt gt 116 lt gt lt gt 117 lt gt lt gt 117
144. lock type Clock Settings cock sures Internat The buttons in the last section lead to submenu for general trigger clock and mapping settings Global Trigger Clock Settings User Marker AUX UO Settings Trigger In The trigger functions are available for R amp S SMx and R amp S AMU instruments only The Trigger In section is where the trigger for the IEEE 802 11 WLAN signal is set The current status of the signal generation is displayed for all trigger modes 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 Mode Selects trigger mode i e determines the effect of a trigger event on the signal genera tion Auto The signal is generated continuously e Retrigger The signal is generated continuously A trigger event internal or external causes a restart Armed Auto The signal is generated only when a trigger event occurs Then the signal is gener ated continuously An Arm stops the signal generation A subsequent trigger event internal with or external causes a restart Armed Retrigger The signal is generated only when a trigger event occurs Then the signal is gener ated continuously Every subsequent trigger event causes a restart An Ar
145. lt ch gt MAC HTControl STATe page 141 MAC Header HT and VHT Configuration 3 7 2 Configuration The following functions describe the control field of the MAC HT configuration RDG More PPDU The RDG More signal field LSB 1 bit issues the reverse direction grant When trans mitted by an initiator or a responder this field is interpreted differently Transmitted by Initiator 0 No reverse grant 1 reverse grant is present as defined by the Duration ID field Transmitted by Responder 0 The PPDU carrying the MPDU is the last transmission by the responder 1 The PPDU carrying the frame is followed by another PPDU Remote command SOURce lt hw gt BB WLNN FBLock lt ch gt MAC HTControl RDGMore on 140 AC Constraint Indicates the access point of the responder 1 bit 0 The response may contain data from any TID Traffic Identifier 1 The response may contain data only from the same AC as the last data received from the initiator Remote command SOURce lt hw gt BB WLNN FBLock lt ch gt MAC HTControl ACConstraint on page 137 Reserved This signal field 5 bit is currently defined but not used It is set to zero by the trans mitter and ignored by the receiver Remote command SOURce lt hw gt BB WLNN FBLock lt ch gt MAC HTControl REServed on page 141 NDP Announcement The NDP Announcement 1 bit indicates that a Null Data Packet NDP will
146. lter type Parameters lt PGauss gt float Range 0 15 to 2 5 Increment 0 01 RST 0 5 Filter Clipping Settings Example BB WLLN FILT PAR PGAUS 0 5 sets B x T to 0 5 for the Pure Gauss filter type Manual operation See Roll Off Factor or BXT on page 67 SOURce lt hw gt BB WLNN 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 WLNN 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 67 SOURce lt hw gt BB WLNN FILTer PARameter SPHase lt SPhase gt Sets 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 WLNN 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 67 SOURce lt hw gt BB WLNN SRATe Displays the sample rate specific for the selected bandwidth SOURce lt hw gt BB WLNN BWidth Return values lt SampRate gt float 20MHz BW20 60MHz for BW40 Usage Query only Manual operation See Sample Rate on page 68 Trigger Settings SOURce lt hw gt BB WLNN SRATe VARiation Variation Parameters Variation
147. m 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 Trigger Marker Clock Settings Every subsequent trigger event internal or external causes a restart Remote command SOURce lt hw gt BB WLNN TRIGger SEQuence page 97 Signal Duration Unit Defines the unit for describing the length of the signal sequence to be output in the Single trigger mode Remote command SOURce lt hw gt BB WLNN TRIGger SLUNit page 96 Signal Duration 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 BB WLNN TRIGger SLENgth on page 95 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 WLNN TRIGger RMODe on page 95 Arm For trigger modes Armed Auto and Armed Retrigger stops the signal generation until
148. mand SOURce lt hw gt BB WLNN TRIGger EXTernal SYNChronize OUTPut on page 93 Trigger Delay Delays the trigger event of the signal from the external trigger source the other path Use this setting to e synchronize the instrument with the device under test DUT or other external devi ces Remote command SOURce lt hw gt BB WLNN TRIGger EXTernal lt ch gt DELay on page 97 SOURce lt hw gt BB TRIGger OBASeband DELay page 94 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 BB WLNN TRIGger EXTernal lt ch gt INHibit on page 97 SOURce lt hw gt BB WLNN TRIGger OBASeband INHibit on 94 Trigger Marker Clock Settings 3 10 2 Marker Mode The marker output signal for synchronizing external instruments is configured in the Marker settings section Marker Mode 0 The R amp S SMBV supports only two markers Marker Mode Selects a marker signal for the associated MARKER output Restar
149. me Control Enters the value of the frame control field The MAC frame control field has a length of 2 bytes 16 bits and is used to define the protocol version the frame type sub type and its function etc As an alternative the individual bits can be set in the lower part of the graph Remote command SOURce lt hw gt BB WLNN FBLock lt ch gt MAC FCONtrol page 133 SOURce lt hw gt BB WLNN FBLock lt ch gt MAC FCONtrol PVERsion on 133 SOURce lt hw gt BB WLNN FBLock lt ch gt MAC FCONtrol on page 133 SOURce lt hw gt FBLock lt ch gt MAC FCONtrol SUBType on page 133 SOURce lt hw gt BB WLNN FBLock lt ch gt MAC FCONtrol TDS page 133 SOURce lt hw gt BB WLNN FBLock lt ch gt MAC FCONtrol FDS on page 133 SOURce lt hw gt WLNN FBLock ch MAC FCONtrol MFRagments on page 133 SOURce lt hw gt WLNN FBLock ch FCONtrol1 RETRy on page 133 SOURce hw WLNN FBLock ch MAC FCONtro1 PMANagement on page 133 SOURce lt hw gt FBLock ch FCONtrol MDATa on page 133 SOURce lt hw gt FBLock ch MAC FCONtrol1 WEP on page 133 SOURce lt hw gt WLNN FBLock ch FCONtrol ORDer on page 133 Duration Id Enters the value of the duration ID field Heade
150. mmand SOURce lt hw gt BB WLNN FBLock lt ch gt MAC HTControl CALibration POSition on page 137 Link Adaption Control Sets the parameters of the link adaption control field The following subfields enable configuring the response signal of the link adaption BO 1bit MA MA payload When the MA Management Action field is set to 1 the payload of the QoS Null Data MPDU Medium Access Controller Protocol Data Unit is interpreted as a payload of the management action frame B1 1bit Sounding Request 1 Request to the responder to transmit a sounding PPDU Physical layer Protocol Data Unit B2 1bit MRQ MCS Request 1 Request for feedback of MCS Modulation Coding Scheme 3 7 3 MAC Header HT VHT Configuration B3 B5 3bit MRS MRQ Sequence Identifier Set by sender to any value in the range 000 110 to identify MRQ Invalid if MRQ 0 B6 B8 3bit MFS MFB Sequence Identifier Set to the received value of MRS Set to 111 for unsolicited MFB B9 B15 7bit MFB MCS Feedback Link adaptation feedback containing the recommended MCS When a responder is unable to provide MCS feedback or the feedback is not available the MFB is set to all ones default value and also MFS is set to 1 Remote command SOURce hw BB WLNN FBLock lt ch gt MAC HTControl LAControl on page 139 HT VHT The subfield indicates the used format HT or VHT 0 indicates use of the HT f
151. mple BB WLNN ANT TCH1 TX2 1MAG 500 sets the imaginary coordinate for the selected transmission chain to 500 Manual operation See Imaginary Phase on page 30 SOURce lt hw gt BB WLNN ANTenna TCHain lt ch gt TX lt dir gt PHASe Phase Sets the phase when cylindrical mapping coordinates are selected Parameters lt Phase gt float Range 0 to 359 99 Increment 0 01 RST 0 Manual operation See Imaginary Phase on page 30 SOURce lt hw gt BB WLNN ANTenna TCHain lt ch gt TX lt dir gt MAGNitude lt Magnitude gt Sets the magnitude when cylindrical mapping coordinates are selected Parameters lt Magnitude gt float Range 0 to 999 99 Increment 0 01 Manual operation See Real Magnitude on page 30 Frame Block Configuration 4 7 Frame Block Configuration 50 lt gt gt E EEE 110 lt gt lt gt 1 110 ESOURce lt hw BB WENNIFBLOCK lt CN gt o nene tanen 111 lt gt lt gt 111 SOURce hw BB WLNN FBLock ch DATA PATTern eese 112 lt gt lt gt
152. n Settings Manual operation See Extended Spatial Streams on page 39 SOURce lt hw gt BB WLNN FBLock lt ch gt GUARd Guard The command selects whether a long or short guard interval is used for the OFDM guard In physical mode GREEN FIELD or LEGACY only long guard intervals are pos sible In this case the field is read only Parameters Guard SHORt LONG RST LONG Example BB WLNN FBL5 GUAR LONG sets a long guard interval Manual operation See Guard on 41 SOURce lt hw gt BB WLNN FBLock lt ch gt ILEaver STATe State The command activates deactivates the interleaver of the data field Parameters State 0 1 RST ON Example BB WLNN FBL5 ILE STAT ON activates the interleaver Manual operation See Interleaver Active on page 43 SOURce lt hw gt BB WLNN FBLock lt ch gt MCS lt MCS gt The command selects the modulation and coding scheme for all spatial streams Parameters lt MCS gt MCSO MCS1 MCS2 MCS3 MCS4 55 56 MCS7 MCS8 MCS9 MCS10 MCS11 MCS12 MCS13 MCS 14 MCS15 MCS16 MCS17 MCS18 MCS19 MCS20 MCS21 MCS22 MCS23 MCS24 MCS25 MCS26 MCS27 MCS28 529 MCS30 MCS31 MCS32 MCS33 MCS34 MCS35 MCS36 MCS37 MCS38 MCS39 MCS40 MCS41 MCS42 MCS43 MCS44 MCS45 MCS46 MCS47 MCS48 MCS49 550 551 MCS52 MCS53 MCS54 MCS55 556 MCS57 MCS58
153. na TCHain ch 0UTPut DESTination on page 108 SOURce hw BB WLNN ANTenna TCHain ch O0UTPut FSELect on page 108 Real Magnitude Enters the value of the real or the magnitude coordinates Remote command For Cartesian mapping coordinates SOURce lt hw gt BB WLNN ANTenna TCHain ch TX dir REAL on page 108 For Cylindrical mapping coordinates SOURce hw BB WLNN ANTenna TCHain ch TX dir MAGNitude on page 109 Imaginary Phase Enters the value of the imaginary or the phase coordinates Remote command For Cartesian mapping coordinates SOURce lt hw gt BB WLNN ANTenna TCHaincch TX dir IMAGinary on page 109 For Cylindrical mapping coordinates SOURce lt hw gt ANTenna TCHain lt ch gt TX lt dir gt PHASe on page 109 3 3 Frame Block Configuration Frame Block Configuration gt To access this dialog select Main Menu gt Frame Block Configuration amp IEEE 802 11 WLAN Frame Blocks Configuration 1 gt WE EDU DER Dea Legacy 1 0400 PN9 E Hes Leser 1 1 0400 PN 9 0 00 Cont 1 0100 PN 0 Mixed Mode 1 0 00 A MPDU Cont 0 00 cont Append Insert Delete This tab comprises the settings to select and configure a fram
154. nal Remote command SOURce lt hw gt BB WLNN TRIGger OUTPut ch DELay on page 99 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 BB WLNN TRIGger OUTPut lt ch gt DELay MAXimum on page 100 SOURce lt hw gt BB WLNN TRIGger OUTPut lt ch gt DELay MINimum on page 100 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 lt hw gt BB WLNN TRIGger OUTPut DELay FIXed on page 99 3 10 4 Clock Settings 5 The clock functions are available for R amp S SMx and R amp S AMU instruments only The Clock Settings is 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 Trigger Marker Clock Settings Avoid unnecessary cable length and branching points None The instrument i
155. nding on the format selected the structure modulation and data rate of the PLCP preamble and header are modified Frame Configuration Settings Parameters Format LONG SHORt RST LONG Example BB WLNN FBL5 PMOD LEG sets the physical mode to LEGACY BB WLNN FBL5 TMOD CCK sets the transport mode BB WLNN FBL5 PLCP FORM SHOR sets the PLCP Format Manual operation See Format page 44 SOURce lt hw gt BB WLNN FBLock lt ch gt PLCP LCBit STATe State available only for CCK and PBCC transport modes Sets the Locked Clock Bit in Service Field of the PLCP Header Parameters State 0 1 OFF ON RST ON Example BB WLNN FBL5 PMOD LEG sets the physical mode to LEGACY BB WLNN FBL5 TMOD CCK sets the transport mode BB WLNN FBL5 PLCP LCB STAT OFF sets the Locked Clock Bit Manual operation See Service Field Clock Bit on page 44 SOURce lt hw gt BB WLNN FBLock lt ch gt PREamble STATe State The command activates deactivates the preamble and signal fields of the frames in the current frame block For data type SOUNDING the preamble and signal field are always activated and cannot be deactivated Parameters State 0 1 RST 1 Example BB WLNN FBL5 PRE STAT activates the preamble and signal fields of the frames in the cur rent frame block Manual operation See Preamble Header Active on page 44 SOUR
156. nfiguration Space Time Block Coding 127 PPDU Configuration Space Time Streams 127 PPDU Configuration Spatial Streams 127 PPDU Configuration Stream 121 PPDU Configuration Time Domain Windowing Active 128 PPDU Configuration Transition Time 128 PPDU Configuration Data Length 118 PPDU Configuration Data Rate 112 118 Preamble Header edet entres 44 PSDU Bit Rate 123 PSDU Bit Rate 41 PSDU Spreadirig ore 124 Pulse Divider Marker 75 104 Pulse Frequency Marker 75 104 Q QoS CoOhlrol cc ca QoS Control State R RDG More PPDU ete ir Recall IEEE 802 11 WLAN settings 25 85 aisi 58 59 141 MEI 63 146 67 89 PRUNING 72 Running Trgget 95 5 Sample Rate onere na me ber nc Sample Rate Variation Save IEEE 802 11 WLAN settings 25 86 Save Recall ree e e
157. nstraint rere 60 Coding type rt err eene 61 143 COMO 142 FB Tx type 61 143 format indicator erede imn 144 e E 61 PENAT 63 MBB 61 144 MESI GIIDSL periere eer tia 62 144 62 144 MSI nsns 62 145 RDG More PPDU intererit 60 145 VESEVE TS 63 146 Unsolicited MEB 22 2 itm 61 146
158. nt on page 26 SOURce lt hw gt BB WLNN FBLock lt ch gt DATA DSELection lt DSelection gt The command selects the data list for the DLISt data source selection The lists are stored as files with the fixed file extensions dm_iqd in a directory of the user s choice The directory applicable to the following commands is defined with the command MMEMory CDIR To access the files in this directory you only have to give the file name without the path and the file extension Frame Block Configuration Parameters lt DSelection gt string Example BB WLNN FBL5 DATA DLIS selects the Data Lists data source MMEM CDIR root Lists DM selects the directory for the data lists BB WLNN FBL5 DATA DSEL dlistl selects file a1isti as the data source This file must be in the directory root Lists DM and have the file extension dm Manual operation See Data List Management on page 26 SOURce lt hw gt BB WLNN FBLock lt ch gt DATA PATTern Pattern The command determines the bit pattern for the PATTern selection The maximum length is 64 bits Parameters Pattern 64 bits RST HO 1 Example BB WLNN FBL5 DATA PATT 8 sets the bit pattern Manual operation See Data on page 34 SOURce lt hw gt BB WLNN FBLock lt ch gt DATA RATE The command queries the PPDU data rate Return values lt Rate gt float Example BB WLNN FBL5 DATA RATE queries the
159. olicited MFB subfield is set to 1 and FB Tx Type subfield is set to 0 the unsolicited MFB refers to either an unbeamformed VHT PPDU or transmit diversity using an STBC VHT PPDU 1 If the Unsolicited MFB subfield is set to 1 and the FB Tx Type subfield is set to 1 the unsolicited MFB refers to a beamformed SU MIMO VHT PPDU Otherwise this subfield is reserved Remote command SOURce lt hw gt FBLock lt ch gt MAC VHTControl FTTYpe on page 143 Coding Type If the Unsolicited MFB subfield is set to 1 the Coding Type subfield contains the Cod ing information set to 0 for BCC and set to 1 for LDPC to which the unsolicited MFB refers 0 for BCC 1 for LDPC Otherwise this subfield is reserved Remote command SOURce lt hw gt BB WLNN FBLock lt ch gt MAC VHTControl CTYPe on page 143 GID H If the Unsolicited MFB subfield is set to 1 the GID H subfield contains the highest 3 bits of Group ID of the PPDU to which the unsolicited MFB refers Otherwise this subfield is reserved Remote command SOURce lt hw gt BB WLNN FBLock lt ch gt MAC VHTControl GIDH on page 143 MFB MFB subfield is interpreted as defined in table 3 3 This subfield contains the recom mended The value of MCS 15 and VHT N_STS 7 indicates that no feedback is present MAC Header VHT Configuration Table 3 3 MFB subfield in the VHT format HT control field Subfield Meaning Definition
160. on Parameters on page 54 SOURce lt hw gt BB WLNN FBLock lt ch gt BFConfiguration CAPability DBACk lt CDBAck gt Informs the associated stations if delayed block Ack is allowed Frame Configuration Settings Parameters lt CDBAck gt 0 1 OFF ON RST 0 Example BB WLNN Informs the associated stations that delayed block Ack is allowed Manual operation See Capability Information Parameters on page 54 SOURce lt hw gt BB WLNN FBLock lt ch gt BFConfiguration CAPability DOFDm lt CDOFdm gt Indicates if Direct Sequence Spread Spectrum OFDM is allowed Parameters lt CDOFdm gt 0 1 RST 0 Example BB WLNN FBL1 BFC CAP DOFD Manual operation See Capability Information Parameters on page 54 Informs the associated stations that Direct Sequence Spread Spectrum OFDM is allowed SOURce lt hw gt BB WLNN FBLock lt ch gt BFConfiguration CAPability PBCC lt PBCC gt Informs the associated stations if PBCC is allowed Parameters lt PBCC gt 0 1 OFF ON RST 0 Example BB WLNN FBL1 BFC CAP PBCC ON Manual operation See Capability Information Parameters on page 54 Informs the associated stations that PBCC is allowed SOURce lt hw gt BB WLNN FBLock lt ch gt BFConfiguration CAPability PRIVacy lt PRIVacy gt Informs the associated stations if encryption is required for all data frames Parameters lt PRIVacy gt 0 1
161. or BCC and set to 1 for LDPC to which the unsolicited MFB refers Parameters lt CTYPe gt integer 0 BCC 1 LDPC Example BB WLNN FBL MAC VHTC CTYP 1 sets the coding information for LPDC Manual operation See Coding Type on page 61 SOURce lt hw gt BB WLNN FBLock lt ch gt MAC VHTControl FTTYpe lt FbTxType gt The command sets the FB Tx Type subfield 0 If the Unsolicited MFB subfield is set to 1 and FB Tx Type subfield is set to 0 the unsolicited MFB refers to either an unbeamformed VHT PPDU or transmit diversity using an STBC VHT PPDU 1 If the Unsolicited MFB subfield is set to 1 and the FB Tx Type subfield is set to 1 the unsolicited MFB refers to a beamformed SU MIMO VHT PPDU Otherwise this subfield is reserved Parameters lt FbTxType gt integer Example BB WLNN FBL1 PAID FTTY 81 1 sets the FTTY subfield Manual operation See FB Tx page 61 SOURce lt hw gt BB WLNN FBLock lt ch gt MAC VHTControl GIDH lt GIDH gt Sets GID H subfield If the Unsolicited MFB subfield is set to 1 the GID H subfield con tains the highest 3 bits of Group ID of the PPDU to which the unsolicited MFB refers Otherwise this subfield is reserved Parameters lt GIDH gt integer RST HO Example BB WLNN FBL MAC VHTC GIDH 8111 3 sets the coding information for GID H Manual operation See GID H on page 61 Frame Configuration Settings SOURce lt hw gt BB WLNN FBLock lt ch
162. ormat 1 indicates use of the VHT format Remote command SOURce hw BB WLNN FBLock lt ch gt MAC HTControl HVINdicator on page 139 MAC VHT Configuration The following functions describe the control field of the MAC VHT configuration RDG More PPDU The RDG More signal field LSB 1 bit issues the reverse direction grant When trans mitted by an initiator or a responder this field is interpreted differently Transmitted by Initiator 0 No reverse grant 1 A reverse grant is present as defined by the Duration ID field Transmitted by Responder 0 The PPDU carrying the MPDU is the last transmission by the responder 1 The PPDU carrying the frame is followed by another PPDU Remote command SOURce hw BB WLNN FBLock lt ch gt MAC VHTControl RDGMore on page 145 AC Constraint Indicates the access point of the responder 1 bit 0 The response may contain data from any TID Traffic Identifier Header HT VHT Configuration 1 The response may contain data only from the same AC as the last data received from the initiator Remote command SOURce lt hw gt BB WLNN FBLock lt ch gt MAC VHTControl ACConstraint on page 142 Unsolicited MFB 0 if the MFB is a response to MRQ 1 if the MFB is not a response to an MRQ Remote command SOURce lt hw gt BB WLNN FBLock lt ch gt MAC VHTControl UMFB on page 146 FB Tx Type 0 If the Uns
163. pe lt gt 25 2 lt gt 50 0 lt gt 50 0 lt gt 8 SOURce lt hw gt BB WLNN FILTer PARameter LPASs 500 lt gt 5 0 50 0 lt gt 55 50 0 lt gt SOURce hw BB WLNN FILTer PARameter SPHase essere rennen 91 ESOURce lt hw gt BB WLNN FILTOR TYPE entr rnt rn tn rrt centre terrere een eue SOURceshw BB WLNN IFBEOEK 1 1r terr SOURce lt hw gt BB WLNN PATH COUPIing STATe SOURceshw BB WLENN PEBLOCK rere nenne n er pg crie nr ete e rn SOURceshw BB WENN PRESet it tte tie rr rat ener nr tne YI exec a RR E ERE RR SOURceshws BB WENN SET Fing CATalOQ encor pena oet ret ba eaae ren 85 SOURceshw BB WENN SET Ting DEL te 85 SOURce lt hw gt BB WENN SEMTING LOAD ciini tet
164. perations 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 information 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
165. pical Workflows Select External Reference Frequency Source for both instruments and config ure the Synchronization Bandwidth and the External Reference Frequency accordingly External Reference Frequen Source External Y Deactivate RF Output if external reference is missing LI External Reference Frequency 5 MHz Synchronisation Bandwidth Narrow SCPI command 5008 ROSC SOUR EXT Use the Reference Frequency of the first instrument i e select an Internal Reference Frequency Source for the first instrument and an External one for the second instrument External Reference Frequency SCPI command R amp S Signal Generator 1 SOUR ROSC SOUR INT SCPI command R amp S Signal Generator 2 SOUR ROSC SOUR EXT 2 For both instruments select an External Trigger Source Source External TRIGGER 1 SCPI command SOUR BB WLNN TRIG SOUR EXT BEXT 3 Configure the first instrument to generate the desired WLAN n ac signal 5 In the WLAN n ac main menu of the first instrument enable signal generation in coupling mode enable parameter Configure Baseband B from Baseband A Configure Baseband B from Baseband A SCPI command SOUR BB WLNN PATH COUP STAT ON In the Tx Antenna Setup menu of the first instrument select four Antennas The number of the Tx Antennas determines the value M in the MxN MIMO sys tem and the number of the transmission chains
166. ples SOURce lt hw gt BB WLNN TRIGger OUTPut lt ch gt RESHift Shift Shifts the rising edge of the marker the specified number of samples Negative values result in a shift back of the marker edge Parameters Shift integer Range 100 to 100 RST 0 Example BB WLNN TRIG OUTP2 RESH 20 Manual operation See Marker Mode on page 75 shifts back the rising edge of marker 2 about 20 samples SOURce lt hw gt BB WLNN TRIGger OUTPut lt ch gt PATTern Pattern The command defines the bit pattern used to generate the marker signal in the setting SOURCe BB WLNN TRIGger OUTPut MODE PATTern 0 is marker off 1 is marker on Parameters Pattern 64 bits RST H2 2 Example BB WLNN TRIG OUTP2 PATT 8000000011111111 15 sets a bit pattern BB WLNN TRIG OUTP MODE PATT activates the marker signal according to a bit pattern for the cor responding marker signal Manual operation See Marker Mode on page 75 Clock Settings SOURce lt hw gt BB WLNN TRIGger OUTPut lt ch gt PULSe DIVider lt Divider gt The command sets the divider for Pulse marker mode SOUR BB WLNN TRIG OUTP MODE PULSe The resulting pulse frequency is derived by dividing the symbol rate by the divider Parameters lt Divider gt integer Range 2 to 1024 Increment 1 RST 2 Example BB WLNN TRIG OUTP PULS DIV 2 sets the divider to 2 for the corresponding marker signal BB WLNN TRIG OUTP2 FREQ
167. preamble in SOURce lt hw gt BB WLNN amble Mode IEEE802 11g networks If all stations are capable of FBLock lt ch gt short preambles Barker Preamble Mode should be BFConfiguration ERP disabled and all stations will use short preambles for page 154 efficiency Use Protec station not IEEE802 11g capable usually stations SOURce lt hw gt BB WLNN tion equipped with IEEE802 11b or IEEE802 11 is associ FBLock lt ch gt ated to the network and thus all stations have to BFConfiguration ERP enable use protection UPRotection on page 154 Use Protection may be activated when NonERP Present is activated NonERP A Non ERP station is present in the network SOURce lt hw gt BB WLNN Present FBLock lt ch gt BFConfiguration ERP NEPResent on page 154 HT Capability Information State Activates deactivates the HT capability information element Remote command SOURce lt hw gt BB WLNN FBLock lt ch gt BFConfiguration HTCapability STATe on page 153 Green Field If enabled this function indicates that the reception of PPDUs with HT Greenfield for mat is supported Remote command SOURce lt hw gt BB WLNN FBLock lt ch gt BFConfiguration HTCapability GFIeld on page 153 MAC Header HT and VHT Configuration The HT VHT Control Field may be included in any frame except a non QoS Data frame The presence of the HT VHTcontrol field in f
168. r and FCS Configuration for Frame Block Depending on the frame type the 2 byte field Duration ID is used to transmit the asso ciation identity of the station transmitting the frame or it indicates the duration assigned to the frame type Remote command SOURce lt hw gt WLNN FBLock ch MAC DID on page 132 MAC Address Enters the value of the address fields 1 4 The MAC header may contain up to four address fields but not all of them must be available Each of the 4 address fields can be activated or deactivated The fields are used for transmitting the basic service set identifier the destination address the source address the receiver address and the transmitter address Each address is 6 bytes 48 bit long The addresses can be entered in hexadecimal form in the entry field of each address field The LSB is in left notation Remote command SOURce lt hw gt BB WLNN FBLock ch MAC ADDRess st STATe page 132 SA hex available only for Physical Mode gt Beacon Enters the value of the source adress SA field Remote command SOURce hw BB WLNN FBLock ch MAC SA on page 133 BSSID hex available only for Physical Mode gt Beacon Enters the value of the basic service set identification BSSID field Remote command SOURce lt hw gt BB WLNN FBLock ch MAC BSSid 132 Sequence Control Activates deactivates the sequ
169. r avail able users Remote command SOURce hw BB WLNN FBLock ch UINDex on page 128 Multi User MIMO Settings Table Sets the user defined parameters for all available users User Index a maximum of four users are supported N STS number of space time streams for each user Group ID group ID for each user Remote command SOURce hw WLNN FBLock lt ch gt MU lt st0 gt NSTS page 121 SOURce lt hw gt BB WLNN FBLock ch MU st0 on page 121 PPDU Configuration 3 4 1 3 Modulation and Coding Scheme Provided are the following settings MCS Selects the modulation and coding scheme for all spatial streams Remote command SOURce hw WLNN FBLock lt ch gt MCS on page 120 Data Rate Mbps Indicates the PPDU data rate Remote command SOURce lt hw gt BB WLNN FBLock lt ch gt DATA RATE on 112 Data Bits Per Symbol Displays the number of data bits sent by an OFDM symbol on all spatial streams Remote command SOURce hw WLNN FBLock lt ch gt DATA BPSymbol on page 118 Stream n Selects the modulation used for the selected spatial stream Remote command SOURce lt hw gt BB WLNN FBLock lt ch gt MODulation lt st gt on 121 Channel Coding Selects the channel coding Off No channel coding is used BCC Binary convolution code Remote command SOURce
170. r should be incremented by 1 for each packet Since no packet is fragmented the fragment counter can always remain at O In this case the following values have to be set Address 2 hex Address 3 hex Address 4 hex Enable Enablelv Enablelv 0000 AC77 6ED2 0002 3ED3 4290 6 bytes 5bytes 1000 0000 0000 6 bytes Start Number 0 Start Number 000 Incremented 1 If itis to be simulated that some packets received incorrectly or if the response of the receiver should be tested when the same packet arrives several times the number of packets required to increment the sequence number can be set to 2 for example Each packet will then automatically be sent twice with identical data Incremented Every 1 024 packet s Remote command SOURce hw BB WLNN FBLock lt ch gt MAC SCONtrol STATe on page 136 SOURce lt hw gt BB WLNN FBLock lt ch gt MAC SCONtrol FRAGment STARt on page 135 SOURce lt hw gt BB WLNN FBLock lt ch gt MAC SCONtrol SEQuence on page 136 SOURce lt hw gt BB WLNN FBLock lt ch gt MAC SCONtrol FRAGment INCRement on page 135 SOURce lt hw gt BB WLNN FBLock lt ch gt MAC SCONtrol SEQuence INCRement on page 135 Start Number Sets the start number of the fragment bits or the sequence bits of the sequence con trol Remote command
171. rame Configuration Settings SOURce lt hw gt BB WLNN FBLock lt ch gt SCRambler PATTern Pattern The command sets the initialization value for scrambling mode User This value is then identical in each generated frame Parameters Pattern 8 bits RST 32 H01 8 Example BB WLNN FBL5 SCR PATT H3F 8 sets the user defined initialization value for the scrambler Manual operation See Scrambler Init hex on page 43 SOURce lt hw gt BB WLNN FBLock lt ch gt SEGMent lt SEGMent gt Selects one of the two segments in VHT 80 80 MHz mode with transmisssion band width 80 or 160 MHz Both segments can only be generated with bandwidth 160 MHz This parameter applies to VHT 80 80 MHz Tx mode only Parameters lt SEGMent gt SEGO SEG1 BOTH RST SEGO Example BB WLNN FBL1 SEGM BOTH selects both segments Manual operation See Segment on page 39 SOURce lt hw gt BB WLNN FBLock lt ch gt SERVice PATTern Pattern The command sets the value of the service field The standard specifies a default value of 0 Other values can be entered in hexadecimal form for test purposes or future extensions Parameters Pattern 16 bits RST 0000 16 Example BB WLNN FBL5 SERV PATT H3F 16 sets the value for the service field Manual operation See Service Field hex on page 44 SOURce lt hw gt BB WLNN FBLock lt ch gt SMOothing lt SMOothing gt available for all Tx modes except VHT
172. rames carried in a PPDU is indicated by setting the order bit in the MAC header The HT VHT Control Field appears last in the MAC Header excluding any security fields Header HT Configuration IEEE 802 11 WLAN MAC Header Configuration for Frame Block 1 Fig 3 2 IEEE 802 11 WLAN MAC Header VHT Configuration window 3 7 1 Common Settings Provided are the following settings for enabling the MAC HT VHT Control Field QoS Control Control field 2 Bytes with an embedded checkbox for activating the control mecha nism of Quality of Service QoS Data Frames The QoS solicits an acknowledgement policy from the receiver according to specific feedback rules QoS control ensures a high level of transmission performance like high bit rate low latency or low bit error probability Information on contents of the QoS Control Data frame is for example duration request field TXOP limit and AP Buffer State or queue size Remote command SOURce lt hw gt WLNN FBLock ch MAC QSControl STATe on page 134 SOURce lt hw gt BB WLNN FBLock ch MAC QSControl on page 134 HT VHT Control Enables HT VHT control and sets the HT VHT control field as hex value Remote command S0URce hw BB WLNN FBLock ch MAC HTControl on 137 SOURce lt hw gt BB WLNN FBLock ch MAC VHTControl on page 142 SOURce hw FBLock
173. rder SOURce lt hw gt BB WLNN FBLock lt ch gt MAC FCONtrol PMANagement lt PManagement gt SOURce lt hw gt BB WLNN FBLock lt ch gt MAC FCONtrol PVERsion lt PVersion gt SOURce lt hw gt BB WLNN FBLock lt ch gt MAC FCONtrol RETRy lt Retry gt SOURce lt hw gt BB WLNN FBLock lt ch gt MAC FCONtrol SUBType lt Subtype gt SOURce lt hw gt BB WLNN FBLock lt ch gt MAC FCONtrol TDS lt Tds gt SOURce lt hw gt BB WLNN FBLock lt ch gt MAC FCONtrol TYPE Type SOURce lt hw gt BB WLNN FBLock lt ch gt MAC FCONtrol WEP lt Wep gt The command enters the value of the individual bits of the frame control field Parameters lt Wep gt integer Range 1 to H1 1 RST HO 1 Example BB WLNN FBL1 MAC FCON MDAT H1 1 sets the value of the More Data bit Manual operation See Frame Control on page 48 SOURce lt hw gt BB WLNN FBLock lt ch gt MAC SA Sa Sets the value of the source adress SA field Operating Manual 1171 5519 12 18 133 Frame Configuration Settings Parameters Sa integer Example BB WLNN FBL1 MAC SA HFFFFFFFFFFFF 48 Sets the value of the SA field to FFFFFFFFFFFF Manual operation See SA hex page 49 SOURce lt hw gt BB WLNN FBLock lt ch gt MAC FCS STATe State Activates deactivates the calculation of the FCS frame check sequence The stand ard defines a 32 bit 4 byte checksum to protect the MAC header and the user data frame body Paramet
174. reams Return values lt BpSymbol gt integer RST 0 Example BB WLNN 5 DATA BPS queries the number of data bits sent by an OFDM symbol on all spatial streams Usage Query only Manual operation See Data Bits Per Symbol on page 40 SOURce lt hw gt BB WLNN FBLock lt ch gt DATA LENGth Length The command enters the size of the data field in bytes For Data Length 0 no data field will be generated for the case of a sounding frame The maximum data length depends on the physical mode In LEGACY mode the max imum value is 4061 Bytes In MIXED MODE and GREEN FIELD the maximum value is 65495 Bytes The data length is related to the number of data symbols Whenever the data length changes the number of data symbols is updated and vice versa Parameters lt Length gt integer Range 0 to Max RST 1024 for LEGACY 1048575 for GREEN FIELD or MIXED MODE Example BB WLNN FBL5 DATA LENG 500 sets the data length to 500 Bytes Manual operation See Data Length on page 42 SOURce lt hw gt BB WLNN FBLock lt ch gt DATA RATE The command queries the PPDU data rate Return values lt Rate gt float Example BB WLNN FBL5 DATA RATE queries the data rate Usage Query only Manual operation See Data Rate Mbps on page 35 Frame Configuration Settings SOURce lt hw gt BB WLNN FBLock lt ch gt DATA SYMBols Symbols Sets the number of data symbols per frame block
175. s abbreviated as R amp S WinlIQSIM2 the license types 02 03 07 11 13 16 12 are abbreviated as 1 1 1 2 1 2 1 1 2 2 1 2 3 2 1 2 1 1 2 12 2 2 2 2 1 2 22 2 2 3 3 1 3 2 3 2 1 3 2 2 3 3 3 4 3 4 1 3 4 1 1 3 4 1 2 3 4 1 3 3 4 1 4 3 4 2 3 4 3 3 5 Contents 7 Documentation OverviQw 1 iiicen inuenta nn Ra saa 7 Conventions Used in the Documentation eee 8 Typographical 5 coa eraot teinte aetate eni petrae 8 Notes on Screershots nacida e qa e CE e e E Hav E 9 Naming of Software Options sss 9 IEEE 802 11 WLAN Signal 11 12 Operation 66 a edere 12 Signal GOneSratlon 13 Typical WOrkTIOWS ettet ERIT 14 Generating 4 or 3XN WLAN n ac Signal with two R amp S Signal Generators for Transmitter Teste ce aee ree E 14 Generating a Realistic WLAN 802 11n ac p Signal for Receiver Test under Stale ER 18 Generating a Realistic WLAN 802 11n ac
176. s defined in an input field that opens when pattern is selected 00000000 SOURce hw BB WLNN TRIGger OUTPut lt ch gt PATTern on page 103 ON OFF Ratio A regular marker signal that is defined by an ON OFF ratio is gener 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 chips and are set in an input field which opens when ON OFF ratio is selected Off Time 3 Remote command SOURce hw WLNN TRIGger OUTPut ch ONTime on page 102 SOURce lt hw gt BB WLNN TRIGger OUTPut lt ch gt OFFTime on page 102 Remote command SOURce lt hw gt WLNN TRIGger OUTPut ch on page 101 3 10 3 Marker Delay o The marker delay functions are available for R amp S SMx and R amp S AMU instruments only Trigger Marker Clock Settings The delay of the signals on the MARKER outputs is set in the Marker Delay section 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 Note 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 restart ing the marker and sig
177. s 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 Synchronisation 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 CLOCk SYNChronization MODE on 106 Set Synchronization Settings for R amp S SMBV only Performs automatically adjustment of the instrument s settings required for the syn chronization mode selected with the parameter Sync Mode Remote command SOURce lt hw gt BB WLNN CLOCk SYNChronization EXECute on 106 Clock Source Selects the clock source Internal The internal clock reference is used to generate the sample clock External The external clock reference is fed in as the sample clock or multiple thereof 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 lt hw gt BB WLNN CLOCk SOURce on page 106 Clock Mode Enters the type of externally supplied clock Sample A sample clock is supplied via the C
178. second path Parameters Delay Example Manual operation float Range 0 to 65535 Increment 0 01 RST 0 BB WLNN TRIG SOUR OBAS sets for path A the internal trigger executed by the trigger signal from the second path path B BB WLNN TRIG OBAS DEL 50 sets a delay of 50 samples for the trigger See Trigger Delay on page 74 SOURce hw BB WLNN TRIGger OBASeband INHibit lt Inhibit gt Specifies the number of samples by which a restart is to be inhibited following a trigger event This command applies only for triggering by the second path Parameters lt Inhibit gt integer Range 0 to 67108863 RST 0 Trigger Settings Example BB WLNN TRIG SOUR OBAS sets for path A the internal trigger executed by the trigger signal from the second path path B BB WLNN TRIG INH 200 sets a restart inhibit for 200 samples following a trigger event Manual operation See Trigger Inhibit on page 74 SOURce lt hw gt BB WLNN TRIGger RMODe The command queries the current status of signal generation for all trigger modes with IEEE 802 11 WLAN modulation on Return values lt RMode gt RUN STOP 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 WLNN TRIG ARM EXECute armed trigger modes only
179. st them if necessary to for instance add redundancy 4 Inthe Tx Antenna Setup dialog select the number of Tx Antennas to be simula ted The number of the Tx Antennas determines the value M in the MxN MIMO sys tem and the number of the transmission chains SCPI command SOUR BB WLNN ANT MODE A3 5 Configure the subcarrier to be analyzed i e configure the Spatial Mapping Mode and set the Time Shifts IEEE 802 11 WLAN Spatial Mapping for Frame Block 2 Mode Spatial Expansion Time Shift 3 10 ns 1 0 00 3 Emm SCPI commands SOUR BB WLNN FBL1 SMAP MODE EXP SOUR BB WLNN FBL1 SMAP TSH1 10 SOUR BB WLNN FBL1 SMAP TSH3 10 2 2 3 6 Typical Workflows In the Tx Antenna Setup dialog enable the Baseband A to generate the Rx 1 sig nal SCPI commands SOUR BB WLNN ANT TCH1 O0UTP DEST BB SOUR BB WLNN ANT TCH2 TCH3 TCHA4 O0UTP DEST OFF Select the mapping coordinates and adjust the weights of the Tx signals in the Transmission Chain Matrix Z IEEE 802 11 WLAN TX Antenna Setup Mapping Coordinates SCPI commands SOUR BB WLNN ANT SYST CART SOUR BB WLNN ANT TCH1 TX1 REAL 10 SOUR BB WLNN ANT TCH1 TX2 REAL 10 SOUR BB WLNN ANT TCH1 TX3 REAL 5 SOUR BB WLNN ANT 1 1 2 0 To enable the R amp S Signal Generator to generat
180. subsequent trigger event occurs Remote command SOURce lt hw gt BB WLNN TRIGger ARM EXECute page 92 Execute Trigger Executes trigger manually A manual trigger can be executed only when an internal trigger source and a trigger mode other than Auto have been selected Remote command SOURce lt hw gt BB WLNN TRIGger EXECute on 93 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 Trigger Marker Clock Settings 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 WLNN TRIGger SOURce page 96 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 work in master slave mode for syn chronous signal generation configure this parameter depending on the provided sys tem trigger event and the properties of
181. supported by the accesspoint SupportedRates field Parameters lt SRATe gt integer Example BB WLNN FBL1 BFC SRAT H06090C1218243036 64 Determines the following set of supported data rates Hex num bers 06 09 OC 12 18 24 30 36 This means 6 Mbps 9 Mbps 12 Mbps 18 Mbps 24 Mbps 36 Mbps 48 Mbps and 54 Mbps are supported by the accesspoint Manual operation See SupportedRate on page 53 4 8 4 2 Frame Configuration Settings Specifies the desired SSID or the wildcard SSID Parameters Ssid string Range 0 char to 32 char Example BB WLNN FBL1 BFC SSID Rohde amp Schwarz Sets the SSID to Rohde amp Schwarz Manual operation See SSID on page 52 SOURce lt hw gt BB WLNN FBLock lt ch gt BFConfiguration TSTamp lt TStamp gt Sets the value of the TSF timer Timing Synchronization Function of a frame s source Parameters lt TStamp gt integer Example BB WLNN FBL1 BFC TST H1414AFAE891254BC 64 Sets the value of the TSF timer to 1414AFAE891254BC Manual operation See Timestamp hex on 52 Capability Information Parameters SOURce hw BB WLNN FBLock ch BFConfiguration CAPability APSD 148 SOURce lt hw gt BB WLNN FBLock lt ch gt BFConfiguration CAPability CAGility 149 SOURce hw BB WLNN FBLock ch BFConfiguration CAPability CPOLlable 149 SOURce lt hw gt BB WLNN FBLock lt
182. t gt 133 lt gt lt gt 133 lt gt lt gt 133 lt gt lt gt 5 133 5 lt gt lt gt 5 134 lt gt lt gt 134 lt gt lt gt 134 SOURce hw BB WLNN FBLock ch MAC SCONItrol FRAGment INCRement 135 SOURce hw BB WLNN FBLock ch MAC SCONItrol FRAGment STAREt 135 SOURce hw BB WLNN FBLock ch MAC SCONItrol SEQuence INCRement 135 SOURce hw BB WLNN FBLock ch MAC SCONtrol SEQuence STARt 136 lt gt lt gt 136 850 lt gt gt
183. t A marker signal is generated at the start of each signal sequence period all frame blocks Frame Block Number of Frame Blocks 1 that is a marker signal is generated at the start of each frame block Otherwise a specific frame block index is given and the whole frame block is marked Frame Block Index 1 Remote command SOURce lt hw gt BB WLNN TRIGger OUTPut ch FBINdex on page 102 Frame Number of Frame Blocks 1 that is a marker signal is generated at the start of each frame in the single frame block Otherwise the frame block and frame index are entered and the specific frame is masked Frame Block Index 1 Remote command SOURce lt hw gt BB WLNN TRIGger OUTPut lt ch gt FINDex on page 102 Trigger Marker Clock Settings Frame Active Part Frame Inactive Part A marker signal is generated to mark every active part of each frame The active data transfer part PPDU of a frame period is marked with high the inactive part idle time with low This marker can be used to decrease the carrier leakage during inactive signal parts by feeding it into the pulse modulator Otherwise the frame block and frame index are entered and the active part of the specific frame is masked The parameters Rising Edge Shift Falling Edge Shift open when Frame Active Part or Frame Inactive Part is selected They shift the rising falling edge of the marker the specified number of samples Negative values
184. t MIMO channel i e one carrier analysis like BER tests for instance Another application of these configurable mapping is the possibility to generate a combined sig nal from different antennas in case of one path instrument or limited number of base band paths Refer to figure 2 2 for an overview of the signal flow for generation of such a signal in HT mode IEEE 802 11n IEEE 802 11ac IEEE 802 11 WLAN Signal Generation Insert GI and Window Insert GI and Window Analog and RF Analog Y and RF Analog Y and RF BCC Constellation Interleaver mapper BCC Constellation Interleaver mapper FEC Encoder PHY Padding Scrambler Spatial Mapping 5 5 4 a S 2 a Insert GI an Window Constellation Interleaver mapper FEC Encoder Fig 2 2 IEEE 802 11 n ac Transmission chain 2 2 Typical Workflows The R amp S Signal Generator equipped with the option digital standard IEEE 802 11 WLAN allows you to generate signals for different transmitter and receiver tests scenarios The test scenarios require different number of baseband paths i e instruments For receiver test for example the number of the Rx antenna to be simulated simultane ously determines the number of the required basebands of one or more instruments since one baseband generates the signal of one Rx antenna In case of transmitter test applications the number of the Tx antenna to
185. t for spatial mapping mode Direct and Spatial Expansion only Parameters lt TShift gt float Range 32000 ns to 32000 ns Increment 1 ns RST 0 ns Example BB WLNN FBL1 SMAP MODE TSH 1000 sets the spatial mapping time shift to 1000 ns Manual operation See Time Shift on page 65 SOURce lt hw gt BB WLNN FBLock lt ch gt SMAPping INDex Index Sets the index of the sub carrier A matrix is mapped to each sub carrier With the exception of k 0 the index can be set in the value range of 64 to 63 Parameters Index integer Range depends on TxMode to depends on TxMode RST 20 Example BB WLNN FBL1 SMAP IND 30 sets the index of the sub carrier to 30 Manual operation See Index k on page 65 SOURce lt hw gt BB WLNN FBLock lt ch gt SMAPping ROW lt st gt COL lt dir gt 1 Queries the time shift value of element of the selected row and column of the spatial transmit matrix Suffix lt st gt 1 8 lt dir gt 1 8 Return values I float Example BB WLNN FBL1 SMAP ROW2 COL2 I queries the time shift value of element for row 2 column 2 Frame Configuration Settings Usage Query only Manual operation See Transmit Matrix on page 66 SOURce lt hw gt BB WLNN FBLock lt ch gt SMAPping ROW lt st gt COL lt dir gt Q Queries the time shift value of element Q of the selected row and column of the spatial transmit matrix Suffix lt st gt 1 8
186. t is specified as a percentage relative to the highest level 100 indicates that clip ping does not take place Level clipping is activated with the command SOUR BB WLNN CLIP STAT Parameters Level integer Range 1 PCT to 100 PCT Increment 1 PCT RST 100 PCT Example BB WLNN CLIP LEV 80PCT sets the limit for level clipping to 8096 of the maximum level BB WLNN CLIP STAT ON activates level clipping Manual operation See Clipping Level on page 69 Filter Clipping Settings SOURce lt hw gt BB WLNN CLIPping MODE Mode The command sets the method for level clipping Clipping Parameters Mode VECTor SCALar VECTor The reference level is the amplitude SCALar The reference level is the absolute maximum of the and Q val ues RST VECTor Example BB WLNN CLIP MODE SCAL selects the absolute maximum of all the and Q values as the reference level BB WLNN CLIP LEV 80PCT sets the limit for level clipping to 8096 of this maximum level BB WLNN CLIP STAT ON activates level clipping Manual operation See Clipping Mode on page 69 SOURce lt hw gt BB WLNN CLIPping STATe State The command activates level clipping Clipping The value is defined with the com mand SOURce WLNN CLIPping LEVel the mode of calculation with the com mand SOURce BB WLNN CLIPping MODE Parameters State 0 1
187. t st0 gt NSTS lt NSTS gt Sets the number of space time streams for each user Parameters lt NSTS gt integer Range 0 to Max RST 1 Frame Configuration Settings Example BB WLNN BB WLNN FBL1 MU2 NSTS 8 0 sets 8 space time streams for user 2 Manual operation See Multi User MIMO Settings Table on page 39 SOURce lt hw gt BB WLNN FBLock lt ch gt NTPS lt NTPS gt avaliable only for VHT Tx mode The command indicates whether VHT AP allows VHT non AP STAs in TXOP power save mode to enter during TXOP Parameters lt NTPS gt OFF ON ON Indicates that the VHT AP allows VHT non AP STAs to enter doze mode during a TXOP OFF Indicates that the VHT AP does not allow VHT non AP STAs to enter doze mode during a TXOP RST 1 Example BB WLNN FBL1 NTPS activates NTPS Manual operation See No TXOP PS on page 45 SOURce lt hw gt BB WLNN FBLock lt ch gt PAID PATTern Pattern avaliable only for VHT Tx mode The command provides an abbreviated indication of the intended recipient s of the frame Parameters Pattern 9 bits RST 000 9 BB WLNN FBL1 PAID PAT H1FB 9 sets the pattern Manual operation See Partial AID hex on page 45 SOURce lt hw gt BB WLNN FBLock lt ch gt PLCP FORMat Format available only for CCK and PBCC transport modes Selects the packet type PPDU format with long or short PLCP physical layer conver gence protocol Depe
188. t to default Calls the default settings The values of the main parameters are listed in the following table General Settings for WLAN Signals Parameter Value General Parameters State Not affected by Set to Default Transmission Bandwidth 20 MHz Configure Baseband B from Baseband A Off Tx Antennas 1 Filter Cosine Clipping Off Frame Blocks Configuration Frame Blocks 1 Frame Block Type DATA Frame Blocks State On Physical Mode MIXED MODE Tx Mode HT 20 MHz Frames 1 Idle Time 0 1 ms Data Source PN9 TX Antenna Setup Antennas 1 Mapping Coordinates Cartesian Output First set Baseband rest is set to Off Matrix Elements Real Imaginary Magnitude Phase All zero but diagonal 1 PPDU Configuration Spatial Streams Space Time Streams Extended Spatial Streams 0 Space Time Block Coding inactive Parameter Value MCS 1 Data Rate Mbps 13 Data Bits Per Symbol 52 General Settings for WLAN Signals Parameter Value Stream 1 QPSK Channel Coding BCC Coding Rate Guard Long Data Length 1024 bytes Number of Data Symbols 158 Scrambler ON User Init Scrambler Init 01 Interleaver Active ON Service Field 0000 Time Domain Windowing Active On Transition Time 100 ns Preamble Header Active ON Smoothing ON Spatial Mapping Mode Spatial Expansion
189. te command SOURce hw BB WLNN FILTer PARameter COSine COFS on page 89 Sample Rate Variation Sets the sample rate of the signal A variation of this parameter only affects the ARB clock rate all other signal parame ters remain unchanged If the sampling rate in the frame configuration menu is changed this parameter is reset to the chosen sampling rate Remote command SOURce hw WLNN SRATe VARiation page 92 Sample Rate Displays the sample rate of the signal specific for the selected bandwidth Remote command SOURce hw BB WLNN SRATe on page 91 3 9 2 Clipping Settings Provided are the following settings Clipping State Switches baseband clipping on and off Baseband clipping is a very simple and effective way of reducing the crest factor of the WLAN signal Filter Clipping Settings WLAN signals may have very high crest factors High crest factors entail two basic problems The nonlinearity of the power amplifier compression causes intermodulation which expands the spectrum spectral regrowth Since the level in the D A converter is relative to the maximum value the average value is converted with a relatively low resolution This results in a high quantiza tion noise Both effects increase the adjacent channel power With baseband clipping all the levels are limited to a settable value Clipping Level This level is specified as a percentage of the highest peak
190. te is 12 Manual operation See Chip Clock Multiplier on page 79 Clock Settings SOURce lt hw gt BB WLNN CLOCk SOURCce Source The command selects the clock source For two path instruments selecting 1 is only possible for 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 The clock source of path A is used for path B RST INTernal Example BB WLNN CLOC SOUR EXT selects an external clock reference The clock is supplied via the CLOCK connector BB WLNN CLOC MODE SAMP specifies that a sample clock is supplied via the CLOCK connec tor Manual operation See Clock Source on page 79 SOURce lt hw gt BB WLNN CLOCk SYNChronization EXECute Performs automatically adjustment of the instrument s settings required for the syn chronization mode set with the command BB WLNN CLOC SYNC MODE Example BB WLNN CLOC SYNC MODE MAST the instrument is configured to work as a master one BB WLNN CLOC SYNC EXEC all synchronization s settings are adjusted accordingly Usage Event Manual operation See Set Synchronization Settings on page 79 SOURce lt hw gt
191. th in Non HT is not present Remote command SOURce lt hw gt BB WLNN FBLock ch CBINonht on 116 Interleaver Active Activates deactivates the interleaver of the data field Remote command SOURce lt hw gt BB WLNN FBLock ch ILEaver STATe on page 120 Time Domain Windowing Active Activates deactivates the time domain windowing Time domain windowing is a method to influence the spectral characteristics of the sig nal which is not stipulated by the standard However it does not replace oversampling and subsequent signal filtering Remote command SOURce lt hw gt BB WLNN FBLock lt ch gt TDWindowing STATe on page 128 Number Of Data Symbols Sets the number of data symbols per frame block If the number of OFDM data symbols is changed the generator calculates the data field length as a function of the set PPDU bit rate and displays it at Data Length Remote command SOURce lt hw gt BB FBLock ch DATA SYMBol1s on 119 Scrambler Init hex Enters the initialization value for Scrambler gt User This value is then identical in each generated frame Remote command SOURce lt hw gt BB WLNN FBLock lt ch gt SCRambler PATTern on page 126 Dyn Bandwidth in Non HT available only for Tx Mode gt VHT If present this parameter is used to modify the first 7 bits of the scrambling sequence to indicate if the transmitter is capa
192. the output signal See the table below for an overview of the required settings Table 3 4 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 triggering of short signal sequences with signal duration comparable with the processing time of the instrument Ext Trigger Event Calculated signal Signal at the output Remote com
193. tical for both scenarios only the 4 MIMO case is explained Connecting two two path R amp S Signal Generators for 4 WLAN n ac sig nal generation Connect the instruments as follow 1 To provide the instruments with reference frequency connect either the inputs REF IN of both instruments to the external reference source or connect the output REF OUT of the first instrument the R amp S Signal Generator that will simulate Tx 1 to the input REF IN of the second one 2 Provide an external trigger source to the inputs TRIGGER 1 for both paths of both instruments 3 Avoid unnecessary cable lengths and branching points The figure below shows the cabling of two two path R amp S Signal Generators for gener ating a 4 WLAN n ac signal R amp S Signal Generator e g R amp S SMU SMATE AMU BB B RF B Trigger 1 Trigger 1 A B REF IN EE I M Hm External Trigger Externa Reference 1 Source Source Y Trigger 1 Trigger 1 REF IN A B BBA RFA R amp S Signal Generator e g R amp S SMU SMATE AMU RFB Fig 2 3 Connecting two two path R amp S Signal Generators for the generation of 4xN MIMO WLAN n ac signal Configuring two R amp S Signal Generators for MxN MIMO Simulation 1 Configure the Reference Oscillator Settings depending on whether an External Reference Source or the Reference Signal REF OUT of the first instrument is used b Ty
194. to create new directories Remote command SOURce lt hw gt BB WLNN SETTing CATalog on page 85 SOURce lt hw gt BB WLNN SETTing LOAD on page 85 SOURce lt hw gt BB WLNN SETTing STORe on page 86 SOURce lt hw gt BB WLNN SETTing STORe FAST on page 86 SOURce lt hw gt BB WLNN SETTing DELete on page 85 Data List Management Calls the Data List Management menu This menu is used to create and edit a data list Data List Management Edit Data List None All data lists are stored as files with the predefined file extension dm The file name and the directory they are stored in are user definable The data lists must be selected as a data source from the submenus under the individ ual function e g in the channel table of the cells Note data lists are generated and edited by means of the SOURce BB DM subsys tem commands Files containing data lists usually end with dm iqd The data lists are selected as a data source for a specific function in the individual subsystems of the digital standard Example Creating and editing the data list SOUR BB DM DLIS SEL listl SOUR BB DM DLIS DATA B1111010101000001111 SOUR BB DM DLIS DATA APP 81111010101000001111 Remote command SOURce lt hw gt BB WLNN FBLock lt ch gt DATA on page 111 SOURce hw BB WLNN FBLock lt ch gt DATA DSELection on page 111
195. to perform signal generation with the IEEE 802 11 WLAN options in a remote environment We assume that the R amp S Signal Gen erator 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 opera tion and the SCPI command syntax are assumed For a description of the conventions used in the remote command descriptions see o Conventions used in SCPI command descriptions section Remote Control Commands in the R amp S Signal Generator operating manual The SOURce BB WLNN subsystem contains commands for the primary and general settings of the IEEE 802 11 WLAN standard These settings concern activation and deactivation of the standard setting the transmission direction filter clock trigger and clipping settings defining the frame duration and the sequence length as well as the preset setting The commands for defining the frame configuration for physical layer modes OFDM and CCK PBCC are described in the next section The commands are divided up in this way to make the comprehensive SOURce BB WLNN subsystem clearer Common Suffixes The following common suffixes are used in remote commands Suffix Value range Description SOURce lt hw gt 112 available baseband signals OUTPut lt ch gt 1 4 available markers R amp S SMBV supports two markers EXTernal ch 1 2 external trigger connectors FBLock ch 1 100
196. uss 90 SOURce lt hw gt BB WLNN FILTer PARameter RCOSine on page 91 SOURce lt hw gt BB WLNN FILTer PARameter SPHase page 91 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 WLNN FILTer PARameter LPASs on page 90 SOURce lt hw gt BB WLNN FILTer PARameter LPASSEVM 90 Cut Off Frequency Shift available for filter parameter Cosine only The cut off frequency is a filter characteristic that defines the frequency at the 3 dB down point The Cut Off Frequency Shift affects this frequency in the way that the fil Filter Clipping Settings ter flanks are moved and the transition band increases by Cut Off Frequency Shift Sample Rate e A Cut Off Frequency Shift 1 results in a very narrow band filter Increasing the value up to 1 makes the filter more broad band By Cut Off Frequency Shift 0 the 3 dB point is at the frequency determined by the half of the selected Sample Rate Tip Use this parameter to adjust the cut off frequency and reach spectrum mask requirements m Cut Off Frequency Shift 1 5 Cut Off Frequency Shift 0 0 Cut Off Frequency Shift 1 Cut Off Frequency Fig 3 4 Example of the frequency response of a filter with different Cut Frequency Shift Remo
197. utomatically Spatial Mapping Direct available only for Physical Mode Mixed Mode or Physical Mode gt Green Field when Ny Sets the spatial mapping to Direct mode The transmit matrix is a CSD matrix that is a diagonal matrix of unit magnitude and complex values that represent cyclic shifts in the time domain Indirect available only for Physical Mode Mixed Mode or Physical Mode gt Green Field In indirect mode the transmit matrix is the product of a CSD matrix and the Hadamard unitary matrix Spatial available only for Physical Mode Mixed Mode or Physical Mode Expansion gt Green Field In spatial expansion mode the transmit matrix is the product of a CSD matrix and a square matrix formed of othogonal columns as defined in the IEEE 802 11 specification Beamforming this feature will be supported in further release Sets the spatial mapping to Beamforming mode The transmit matrix is the product of a CSD matrix and the Hadamard unitary matrix The File button is displayed to open a Browse popup A file with source format can be selected for the beamforming The file must include 128 4 4 IQ elements corresponding to the sub carri ers Remote command SOURCe lt hw gt WLNN FBLock ch SMAPping MODE 155 SOURce hw BB WLNN FBLock ch SMAPping BSELection page 155 Index k Sets the index of the sub carrier
198. value Since clipping is done prior to filtering the procedure does not influence the spectrum The EVM however increases Since clipping the signal not only changes the peak value but also the average value the effect on the crest factor is unpredictable The following table shows the effect of the Clipping on the crest factor for typical scenarios Remote command SOURce lt hw gt BB WLNN CLIPping STATe on page 88 Clipping Level Sets the limit for clipping This value indicates at what point the signal is clipped It is specified as a percentage relative to the highest level 100 indicates that clipping does not take place Remote command SOURce hw BB WLNN CLIPping LEVel page 87 Clipping Mode Selects the clipping method A graphic illustration of the way in which these two meth ods work is given in the menu Vector The limit is related to the amplitude The and components are mapped together the angle is retained see Clipping State Scalar The limit is related to the absolute maximum of all the and Q values 11 1 41 and components are mapped separately the angle changes Remote command SOURce lt hw gt BB WLNN CLIPping MODE on page 88 Trigger Marker Clock Settings 3 10 Trigger Marker Clock Settings The trigger clock and marker delay functions are available for R amp S SMx and R amp S AMU instruments
199. y when a trigger event occurs Then the signal is generated once to the length specified with command SOUR BB WLNN TRIG SLEN Every subsequent trigger event causes a restart RST AUTO Example BB WLNN 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 71 4 4 Marker Settings This section lists the remote control commands necessary to configure the markers O The marker delay settings are available for R amp S SMx and R amp S AMU instruments only SOURceshw BB WLENN TRIGger OUTPut DELay F Xed terrena nnn 99 5 0 lt gt 0 lt gt 99 SOURce hw BB WLNN TRIGger OUTPut ch DELay MAXimum sse 100 SOURce hw BB WLNN TRIGger OUTPut ch DELay MINimum sess 100 SOURce hw BB WLNN TRIGger OUTPut ch MODE essen 101 Marker Settings SOURce hw BB WLNN TRIGger OUTPut ch ONTime essen 102 SOURce hw BB WLNN TRIGger OUTPut ch OFFTime eene 102 lt gt lt gt 102 lt gt 0

K286 IEEE 802.11n / IEEE 802.11ac

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