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Rohde & Schwarz SMBV-K48 Operating Manual

Rohde & Schwarz SMBV-K48 Operating Manual

Ieee 802.11 a/b/g digital standard for signal generators
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IEEE 802.11 (a/b/g)
Digital Standard for
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R&S
Signal Generators
Operating Manual
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1171528312

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Summary of Contents for Rohde & Schwarz SMBV-K48

  • Page 1 IEEE 802.11 (a/b/g) Digital Standard for ® R&S Signal Generators Operating Manual (;ÕÂá<) 1171528312...
  • Page 2 This document describes the following software options: ● R&S ® SMBV-K48 1415.8102.xx ● ® R&S SMU-K48 1161.0266.02 ● ® R&S AMU-K48 1402.6706.02 ● ® R&S SMATE-K48 1404.6703.02 ● ® R&S SMJ-K48 1404.1001.02 ® This manual describes firmware version 4.70.108.xx and later of the R&S SMBV100A.

  • Page 3: Table Of Contents

    IEEE 802.11 (a/b/g) Contents Contents 1 Preface....................5 Documentation Overview..................... 5 Conventions Used in the Documentation..............6 1.2.1 Typographical Conventions.....................6 1.2.2 Notes on Screenshots.....................7 1.2.3 Naming of Software Options................... 7 2 Introduction.................... 9 Physical Layer OFDM....................10 2.1.1 PLCP Format.........................11 2.1.2 PLCP Preamble......................11 2.1.3 Signal Field........................
  • Page 4 IEEE 802.11 (a/b/g) Contents 3.5.1 Filter Settings........................ 38 3.5.2 Clipping Settings......................39 Trigger/Marker/Clock Settings................... 40 3.6.1 Trigger In........................41 3.6.2 Marker Mode......................... 45 3.6.3 Marker Delay.........................46 3.6.4 Clock Settings....................... 47 3.6.5 Global Settings......................48 4 Remote-Control Commands............... 49 General Commands....................50 Filter/Clipping Settings....................59 Trigger Settings......................63 Marker Settings......................

  • Page 5: Preface

    IEEE 802.11 (a/b/g) Preface Documentation Overview 1 Preface 1.1 Documentation Overview This section provides an overview of the R&S Signal Generator user documentation. You find it on the product page at: www.rohde-schwarz.com/manual/smbv100a Quick start guide Introduces the R&S Signal Generator and describes how to set up and start working with the product.

  • Page 6: Conventions Used In The Documentation

    IEEE 802.11 (a/b/g) Preface Conventions Used in the Documentation Instrument security procedures manual Deals with security issues when working with the R&S Signal Generator in secure areas. Basic safety instructions Contains safety instructions, operating conditions and further important information. The printed document is delivered with the instrument. Data sheet and brochure The data sheet contains the technical specifications of the software options, see "Digi- tal Standards for Signal Generators - Data sheet"...

  • Page 7: Notes On Screenshots

    IEEE 802.11 (a/b/g) Preface Conventions Used in the Documentation Convention Description Links Links that you can click are displayed in blue font. "References" References to other parts of the documentation are enclosed by quota- tion marks. 1.2.2 Notes on Screenshots When describing the functions of the product, we use sample screenshots.
  • Page 8 IEEE 802.11 (a/b/g) Preface Conventions Used in the Documentation Operating Manual 1171.5283.12 ─ 18...

  • Page 9: Introduction

    IEEE 802.11 (a/b/g) Introduction 2 Introduction The R&S Signal Generator provides you with the ability to generate signals in accord- ance with the Wireless LAN standards IEEE 802.11a, IEEE 802.11b and IEEE 802.11g. (IEEE 802.11) standard WLAN. IEEE 802.11 stands for a wireless LAN standard prepared by ANSI/IEEE Institute of Electrical and Electronics Engineers).

  • Page 10: Physical Layer Ofdm

    IEEE 802.11 (a/b/g) Introduction Physical Layer OFDM ● Chip/Sample rate 20 Mcps (OFDM IEEE.802.11a/g), and 11 Mcps (CCK/PBCC IEEE.802.11b/g). ● PSDU bit rates 1Mbps, 2Mbps, 5.5Mbps and 11 Mbps (CCK/PBCC), 22Mbps (PBCC), 6 Mbps, 9 Mbps, 12 Mbps, 18 Mbps, 24Mbps, 36 Mbps, 48 Mbps and 54 Mbps (OFDM).

  • Page 11: Plcp Format

    IEEE 802.11 (a/b/g) Introduction Physical Layer OFDM Parameters Value Occupied bandwidth 16.6 MHz Channel spacing 20 MHz The table shows the main parameters of OFDM. 64-point IFFT is used to generate the 52 subcarriers. 12 of the 64 possible carriers are not used. One is the carrier in the middle of the band, which would otherwise be impaired by the carrier leakage of the I/Q modulator, the others are the remaining carriers at the upper and lower end of the spectrum.

  • Page 12: Signal Field

    IEEE 802.11 (a/b/g) Introduction Physical Layer OFDM ingly. The complete preamble is 16 µs long and thus corresponds to the duration of 4 normal OFDM symbols. 2.1.3 Signal Field The signal field directly follows the preamble and consists of 24 bits which are used as follows: The first 4 bits inform on the data rate (RATE) of the following data section.
  • Page 13 IEEE 802.11 (a/b/g) Introduction Physical Layer OFDM Data from the source (usually the next higher protocol layer, here MAC) must first be scrambled, i.e. multiplied with a PN sequence. A 127-bit code generated by the follow- ing generator polynomial is stipulated: S(x) = x A feedback shift register generates the scrambling sequence.

  • Page 14: Physical Layer Cck-Pbcc

    IEEE 802.11 (a/b/g) Introduction Physical Layer CCK-PBCC 2.2 Physical Layer CCK-PBCC A distinction is made between the packet type (or PPDU format) with long or short PLCP (physical layer convergence protocol). 2.2.1 Long PLCP PPDU Format In 802.11, the data packet on the physical layer is referred to as PPDU (PLCP protocol data units).

  • Page 15: Data Spreading And Modulation Cck-Pbcc

    IEEE 802.11 (a/b/g) Introduction Data Spreading and Modulation CCK-PBCC number of bits transmitted in the SYNC field is reduced from 128 to 56. In the short header, however, the number of data bits transmitted remains unchanged, but the data rate is doubled (to 2 Mbps). These measures halve the transmission periods of pream- ble and header in the short PLCP format, as compared to the long PLCP format.

  • Page 16: Mbps Data Rate With Dbpsk Modulation

    IEEE 802.11 (a/b/g) Introduction Data Spreading and Modulation CCK-PBCC Packet field Data rate Chip rate Spreading/coding Modulation methods Short PLCP pream- 1 Mbps 11 Mcps 11-chip Barker DBPSK sequence Long PLCP pream- 1 Mbps 11 Mcps 11-chip Barker DBPSK sequence Short PLCP header 2 Mbps 11 Mcps 11-chip Barker...

  • Page 17: Mbps Data Rate With Cck Modulation

    IEEE 802.11 (a/b/g) Introduction Data Spreading and Modulation CCK-PBCC Dibit pattern (d0,d1) (d0 is first in time) Phase change pi/2 3pi/2(-pi/2) 2.3.3 5.5 Mbps Data Rate with CCK Modulation The standard specifies CCK modulation (complementary code keying) for a data rate of 5.5 Mbps.

  • Page 18: Mbps Data Rate With Cck Modulation

    IEEE 802.11 (a/b/g) Introduction Data Spreading and Modulation CCK-PBCC Example: to d ) = (0110), the phase of the last symbol is 0, the current modulation step is even: φ = pi/2 φ = (1 - pi) + pi/2 = 3pi/2 φ...

  • Page 19: Mbps And 11 Mbps Data Rates With Pbcc Modulation

    IEEE 802.11 (a/b/g) Introduction Data Spreading and Modulation CCK-PBCC 2.3.5 5.5 Mbps and 11 Mbps Data Rates with PBCC Modulation Packet binary convolutional coding (PBCC) can optionally be used instead of CCK modulation for the 5.5 Mbps and 11 Mbps data rates. The following illustration provides a schematic overview of this method.
  • Page 20 IEEE 802.11 (a/b/g) Introduction Data Spreading and Modulation CCK-PBCC Operating Manual 1171.5283.12 ─ 18...

  • Page 21: Wlan User Interface

    IEEE 802.11 (a/b/g) WLAN User Interface 3 WLAN User Interface The menu for setting the IEEE 802.11a-g WLAN digital standard is either called from the baseband block or from the menu tree under "Baseband". The menu is split into several sections for configuring the standard. The choice of sim- ulation mode determines which displays and parameters are made available in the lower section.

  • Page 22: General Settings For Wlan Signals

    IEEE 802.11 (a/b/g) WLAN User Interface General Settings for WLAN Signals 3.1 General Settings for WLAN Signals In this section, the IEEE 802.11a-g WLAN digital standard is enabled and the basic sig- nal structure is configured. State Activates the standard and deactivates all the other digital standards and digital modu- lation modes in the same path.
  • Page 23 IEEE 802.11 (a/b/g) WLAN User Interface General Settings for WLAN Signals Save/Recall Calls the "Save/Recall" menu. From the "Save/Recall" menu, the file select windows for saving and recalling IEEE 802.11a-g WLAN configurations and the file manager can be called. IEEE 802.11a-g WLAN configurations are stored as files with the predefined file exten- sion *.wlan.
  • Page 24 IEEE 802.11 (a/b/g) WLAN User Interface General Settings for WLAN Signals "802.11a" The standard supports OFDM (orthogonal frequency division multi- plexing). This modulation is defined by the IEEE 802.11a specification in the 5 GHz frequency band. "802.11b" The standard includes the modulation mode CCK (complementary code keying) and the data rates 5.5 Mbps and 11 Mbps.
  • Page 25 IEEE 802.11 (a/b/g) WLAN User Interface General Settings for WLAN Signals "Framed" The "framed mode" is the standard operating mode which is also used in the real system. Data packets with the frame structure defined by the standard are generated. Signals representing a sequence of frames (PLCP protocol data units, referred to as PPDUs) and separated by a so-called idle time can be configured in the framed mode.
  • Page 26 IEEE 802.11 (a/b/g) WLAN User Interface General Settings for WLAN Signals Sequence Length Sets the sequence length of the signal in number of frames. A (physical layer) frame consists of a PPDU burst including the subsequent idle time. Remote command: on page 56 [:SOURce<hw>]:BB:WLAN:SLENgth Idle time...

  • Page 27: Ppdu/Sequence Configuration

    IEEE 802.11 (a/b/g) WLAN User Interface PPDU/Sequence Configuration Remote command: n.a. Execute Trigger This feature is available for Trigger Source Internal 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: on page 64 [:SOURce<hw>]:BB:WLAN:TRIGger:EXECute...

  • Page 28: Standard 802.11B/G - Cck - Pbcc

    IEEE 802.11 (a/b/g) WLAN User Interface PPDU/Sequence Configuration ● Unframed mode: 3.2.2 Standard 802.11b/g - CCK - PBCC In the upper section of the menu, the parameters of the data part (PSDU) are set. In framed mode, a distinction is made between the packet type (or PPDU format) with long or short PLCP (physical layer convergence protocol).

  • Page 29: Settings

    IEEE 802.11 (a/b/g) WLAN User Interface PPDU/Sequence Configuration ● Unframed Mode: 3.2.3 Settings PLCP P+H Format (CCK,PBCC) (framed mode) Selects the packet type (PPDU format) with long or short PLCP (physical layer conver- gence protocol). Depending on the format selected, the structure, modulation and data rate of the PLCP preamble and header are modified.
  • Page 30 IEEE 802.11 (a/b/g) WLAN User Interface PPDU/Sequence Configuration PSDU Bit Rate Selects the bit rate of the PSDU. ● OFDM: All data rates defined by the standard are supported. The selection of the PSDU bit rate automatically determines the code rate of the convolutional coder and the sub- carrier modulation of the OFDM.
  • Page 31 IEEE 802.11 (a/b/g) WLAN User Interface PPDU/Sequence Configuration Data Length Sets the data length. In the framed mode, data field lengths of up to 4095 bytes per frame packet are possi- ble. The value corresponds to the maximum data length. If the MAC layer is activated, the MAC header (up to 30) and the (4) FCS bytes are added.
  • Page 32 IEEE 802.11 (a/b/g) WLAN User Interface PPDU/Sequence Configuration Data List Management… Calls the "Data List Management" menu. This menu is used to create and edit a data list. All data lists are stored as files with the predefined file extension *.dm_iqd. The file name and the directory are user-definable.
  • Page 33 IEEE 802.11 (a/b/g) WLAN User Interface PPDU/Sequence Configuration Remote command: on page 53 [:SOURce<hw>]:BB:WLAN:SCRambler:MODE Service Field Clock Bit (CCK,PBCC) Sets the locked clock bit in service field of the PLCP header. Via this flag (bit), the 802.11b/g transmitter indicates whether transmission frequency and symbol rate have been derived from the same oscillator.

  • Page 34: Mac Header And Fcs Configuration

    IEEE 802.11 (a/b/g) WLAN User Interface MAC Header and FCS Configuration Remote command: on page 58 [:SOURce<hw>]:BB:WLAN:TTIMe Configure MAC Header and FCS... Calls the menu for configuration of the MAC header and FSC. The menu is described in Chapter 3.3, "MAC Header and FCS Configuration", on page 34.
  • Page 35 IEEE 802.11 (a/b/g) WLAN User Interface MAC Header and FCS Configuration Remote command: on page 83 [:SOURce<hw>]:BB:WLAN:PSDU:MAC:STATe Frame Control 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 proto- col version, the frame type, sub type and its function, etc.
  • Page 36 IEEE 802.11 (a/b/g) WLAN User Interface MAC Header and FCS Configuration 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).

  • Page 37: Ppdu Graph

    IEEE 802.11 (a/b/g) WLAN User Interface PPDU Graph Remote command: on page 82 [:SOURce<hw>]:BB:WLAN:PSDU:MAC:SCONtrol:FRAGment:STARt on page 83 [:SOURce<hw>]:BB:WLAN:PSDU:MAC:SCONtrol:SEQuence:STARt 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<hw>]:BB:WLAN:PSDU:MAC:SCONtrol:FRAGment:INCRement on page 82...

  • Page 38: Filter/Clipping Settings

    IEEE 802.11 (a/b/g) WLAN User Interface Filter/Clipping Settings Figure 3-2: Physical layer mode CCK, Long PLCP 3.5 Filter/Clipping Settings To access this dialog, select "Main Menu > Filter/Clipping". The baseband filter, sample rate variation and clipping are defined in this menu. 3.5.1 Filter Settings Filter Sets the baseband filter.

  • Page 39: Clipping Settings

    IEEE 802.11 (a/b/g) WLAN User Interface Filter/Clipping Settings Roll Off Factor / BxT Sets the filter parameter. The filter parameter offered ("Roll Off Factor" or "BxT") depends on the currently selected filter type. This parameter is preset to the default for each of the predefined filters.

  • Page 40: Trigger/Marker/Clock Settings

    IEEE 802.11 (a/b/g) WLAN User Interface Trigger/Marker/Clock Settings 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 value. Since clipping is done prior to filtering, the procedure does not influence the spectrum. The EVM however increases.

  • Page 41: Trigger In

    IEEE 802.11 (a/b/g) WLAN User Interface Trigger/Marker/Clock Settings The "Marker Mode" section is where the marker signals at the [MARKER] output con- nectors are configured. The "Marker Delay" section is where a marker signal delay can 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.
  • Page 42 IEEE 802.11 (a/b/g) WLAN User Interface Trigger/Marker/Clock Settings 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. ● "Retrigger" The signal is generated continuously. A trigger event (internal or external) causes a restart.
  • Page 43 IEEE 802.11 (a/b/g) WLAN User Interface Trigger/Marker/Clock Settings Remote command: on page 64 [:SOURce<hw>]:BB:WLAN:TRIGger:ARM:EXECute Execute Trigger This feature is available for Trigger Source Internal 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: on page 64 [:SOURce<hw>]:BB:WLAN:TRIGger:EXECute...
  • Page 44 IEEE 802.11 (a/b/g) WLAN User Interface Trigger/Marker/Clock Settings "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.

  • Page 45: Marker Mode

    IEEE 802.11 (a/b/g) WLAN User Interface Trigger/Marker/Clock Settings Trigger Inhibit Sets the duration for inhibiting a new trigger event after 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.

  • Page 46: Marker Delay

    IEEE 802.11 (a/b/g) WLAN User Interface Trigger/Marker/Clock Settings "ON/OFF A regular marker signal that is defined by an ON/OFF ratio is gener- Period" ated. A period lasts one ON and OFF cycle. The "ON Time" and "OFF Time" are each expressed in number of samples and are set in an input field which opens when ON/OFF ratio is selected.

  • Page 47: Clock Settings

    IEEE 802.11 (a/b/g) WLAN User Interface Trigger/Marker/Clock Settings 3.6.4 Clock Settings The clock settings is used to set the clock source and a delay if necessary. Sync. Mode (for R&S SMBV only) Selects the synchronization mode. This parameter is used to enable generation of precise synchronous signal of several connected R&S SMBVs.

  • Page 48: Global Settings

    IEEE 802.11 (a/b/g) WLAN User Interface Trigger/Marker/Clock Settings Enters the type of externally supplied clock. "Chip" A chip clock is supplied via the CLOCK connector. "Multiple" A multiple of the chip clock is supplied via the CLOCK connector; the chip clock is derived internally from this. The multiplier window provided allows the multiplication factor to be entered.

  • Page 49: Remote-Control Commands

    IEEE 802.11 (a/b/g) Remote-Control Commands 4 Remote-Control Commands The following commands are required to perform signal generation with the IEEE 802.11a-g WLAN option in a remote environment. We assume that the R&S Signal Generator has already been set up for remote operation in a network as described in the R&S Signal Generator documentation.

  • Page 50: General Commands

    IEEE 802.11 (a/b/g) Remote-Control Commands General Commands Tasks (in manual or remote operation) that are also performed in the base unit in the same way are not described here. In particular, the tasks include: ● Managing settings and data lists, i.e. storing and loading settings, creating and accessing data lists, accessing files in a particular directory, etc.

  • Page 51: [:Source]:Bb:wlan:fformat

    IEEE 802.11 (a/b/g) Remote-Control Commands General Commands [:SOURce<hw>]:BB:WLAN:FFORmat <Fformat> The command selects the frame type. The selection defines parameters of the MAC layer, e.g. the values of the MAC Header bit fields. The command is only valid in framed mode (SOURce:BB:WLAN:SMODe FRAMed). The selection defines parameters of the MAC layer, e.g.

  • Page 52: [:Source]:Bb:wlan:mode

    IEEE 802.11 (a/b/g) Remote-Control Commands General Commands Parameters: <ITime> float Range: 0 to 1 *RST: 100E-6 Example: BB:WLAN:ITIM 0 sets the interleaver time to 0. Manual operation: " Idle time " on page 26 [:SOURce<hw>]:BB:WLAN:MODE <Mode> The command selects the Physical Layer Mode. Parameters: <Mode>...

  • Page 53: [:Source]:Bb:wlan:plcp:lcbit:state

    IEEE 802.11 (a/b/g) Remote-Control Commands General Commands Parameters: <Format> LONG | SHORt *RST: LONG Example: BB:WLAN:PLCP:FORM LONG selects the packet type (PPDU format) with long PLCP. Manual operation: " PLCP P+H Format (CCK,PBCC) " on page 29 [:SOURce<hw>]:BB:WLAN:PLCP:LCBit:STATe <State> The command sets the Locked Clock Bit in Service Field of the PLCP Header. The command is only available in framed mode (SOURce:BB:WLAN:SMOD FRAMed) and for physical layer mode CCK and PBCC (SOURce:BB:WLAN:MODE CCK|PBCC).

  • Page 54: [:Source]:Bb:wlan:scrambler:pattern

    IEEE 802.11 (a/b/g) Remote-Control Commands General Commands USER (OFDM only)The scrambler is activated. The initialization value of the scrambler is set to a fixed value that is entered at "Scram- bler Init (hex)". This value is then identical in each generated frame.

  • Page 55: [:Source]:Bb:wlan:setting:catalog

    IEEE 802.11 (a/b/g) Remote-Control Commands General Commands <BitCount> integer Range: 1 to 16 *RST: Example: BB:WLAN:SERV:PATT #H3F,8 the value for the service field is set. Manual operation: " Service field (hex) " on page 33 [:SOURce<hw>]:BB:WLAN:SETTing:CATalog? Reads out the files with IEEE 802.11a-g settings in the default directory. The default directory is set using command MMEM:CDIRectory.

  • Page 56: [:Source]:Bb:wlan:setting:store

    IEEE 802.11 (a/b/g) Remote-Control Commands General Commands Setting parameters: <Filename> string Example: BB:WLAN:SETT:LOAD 'wlana' loads file wlana. Usage: Setting only Manual operation: " Save/Recall " on page 23 [:SOURce<hw>]:BB:WLAN:SETTing:STORe <Filename> This command stores the current IEE 802.11a-g WLAN settings into the selected file. The directory is set using command MMEM:CDIRectory.

  • Page 57: [:Source]:Bb:wlan:smode

    IEEE 802.11 (a/b/g) Remote-Control Commands General Commands Manual operation: " Sequence Length " on page 26 [:SOURce<hw>]:BB:WLAN:SMODe <Smode> The command selects the simulation mode. Parameters: <Smode> FRAMed | UNFRamed FRAMed The framed mode is the standard operating mode which is also used in the real system.

  • Page 58: [:Source]:Bb:wlan:state

    IEEE 802.11 (a/b/g) Remote-Control Commands General Commands [:SOURce<hw>]:BB:WLAN:STATe <State> Activates the standard and deactivates all the other digital standards and digital modu- lation modes in the same path. Parameters: <State> 0 | 1 | OFF | ON *RST: Example: SOURce1:BB:WLAN:STATe ON Manual operation: "...

  • Page 59: Filter/Clipping Settings

    IEEE 802.11 (a/b/g) Remote-Control Commands Filter/Clipping Settings [:SOURce<hw>]:BB:WLAN:WAVeform:CREate <Filename> Creates a waveform using the current settings of the "WLAN" dialog. The file name is entered with the command. The file is stored with the predefined file extension *.wv. The file name and the directory it is stored in are user-definable. Setting parameters: <Filename>...
  • Page 60 IEEE 802.11 (a/b/g) Remote-Control Commands Filter/Clipping Settings Example: BB:WLAN:CLIP:LEV 80PCT sets the limit for level clipping to 80% of the maximum level. BB:WLAN:CLIP:STAT ON activates level clipping. Manual operation: "Clipping Level" on page 40 [:SOURce<hw>]:BB:WLAN:CLIPping:MODE <Mode> Sets the method for level clipping (Clipping). Parameters: <Mode>...
  • Page 61 IEEE 802.11 (a/b/g) Remote-Control Commands Filter/Clipping Settings Parameters: <Type> RCOSine | COSine | GAUSs | LGAuss | CONE | COF705 | COEQualizer | COFequalizer | C2K3x | APCO25 | SPHase | RECTangle | PGAuss | LPASs | DIRac | ENPShape | EWPShape | LPASSEVM *RST: GAUSs (if layer mode OFDM), COSine (if layer...
  • Page 62 IEEE 802.11 (a/b/g) Remote-Control Commands Filter/Clipping Settings Example: BB:WLAN:PAR:COS 0.5 sets B x T to 0.5 for the Gauss filter type. Manual operation: "Roll Off Factor / BxT" on page 39 [:SOURce<hw>]:BB:WLAN:FILTer:PARameter:LPASs <LPass> The command sets the cut off frequency factor for the Lowpass filter (ACP optimiza- tion) type.

  • Page 63: Trigger Settings

    IEEE 802.11 (a/b/g) Remote-Control Commands Trigger Settings Parameters: <RCosine> float Range: 0 to 1.0 Increment: 0.01 *RST: 0.22 Example: BB:WLAN:PAR:RCOS 0.22 sets the roll-off factor to 0. 22 for filter type Root Cosine. Manual operation: "Roll Off Factor / BxT" on page 39 [:SOURce<hw>]:BB:WLAN:FILTer:PARameter:SPHase <SPhase>...
  • Page 64 IEEE 802.11 (a/b/g) Remote-Control Commands Trigger Settings .............65 [:SOURce<hw>]:BB:WLAN:TRIGger:OBASeband:DELay .............65 [:SOURce<hw>]:BB:WLAN:TRIGger:OBASeband:INHibit ..............66 [:SOURce<hw>]:BB:WLAN:TRIGger:RMODe? ..............66 [:SOURce<hw>]:BB:WLAN:TRIGger:SLENgth ...............67 [:SOURce<hw>]:BB:WLAN:TRIGger:SLUNit ..............67 [:SOURce<hw>]:BB:WLAN:TRIGger:SOURce ..........68 [:SOURce<hw>]:BB:WLAN:TRIGger[:EXTernal<ch>]:DELay ..........68 [:SOURce<hw>]:BB:WLAN:TRIGger[:EXTernal<ch>]:INHibit ..............69 [:SOURce<hw>]:BB:WLAN[:TRIGger]:SEQuence [:SOURce<hw>]:BB:WLAN:TRIGger:ARM:EXECute The command stops signal generation for trigger modes Armed_Auto and Armed_Ret- rigger.
  • Page 65 IEEE 802.11 (a/b/g) Remote-Control Commands Trigger Settings Enables/disables output of the signal synchronous to the external trigger event. For R&S SMBV instruments: See also section "Sync. Output to External Trigger" for a detailed description of the applications of this setting. Parameters: <Output>...
  • Page 66 IEEE 802.11 (a/b/g) Remote-Control Commands Trigger Settings Parameters: <Inhibit> float Range: 0 to 2^32-1 chips *RST: Example: BB:WLAN:TRIG:SOUR OBAS sets for path A the internal trigger executed by the trigger signal from the second path (path B). BB:WLAN:TRIG:OBAS:INH 200 sets a restart inhibit for 200 chips following a trigger event. Manual operation: "Trigger Delay"...
  • Page 67 IEEE 802.11 (a/b/g) Remote-Control Commands Trigger Settings Parameters: <SLength> float Range: 1 to (2^32-1) chips Increment: 1 chip *RST: 32 768 chips Example: BB:WLAN:SEQ SING sets trigger mode Single. :BB:WLAN:TRIG:SLEN 200 sets a sequence length of 200 chips. The first 200 chips of the current frame will be output after the next trigger event.
  • Page 68 IEEE 802.11 (a/b/g) Remote-Control Commands Trigger Settings trigger signal on the TRIGGER 1/2 connector. OBASeband trigger signal from the other path *RST: INTernal Example: SOURce1:BB:WLAN:TRIGger:SOURce EXTernal sets external triggering via the TRIGGER 1 connector. Manual operation: "Trigger Source" on page 43 [:SOURce<hw>]:BB:WLAN:TRIGger[:EXTernal<ch>]:DELay <Delay>...

  • Page 69: Marker Settings

    IEEE 802.11 (a/b/g) Remote-Control Commands Marker Settings [:SOURce<hw>]:BB:WLAN[:TRIGger]:SEQuence <Sequence> The command selects the trigger mode. Parameters: <Sequence> AUTO | RETRigger | AAUTo | ARETrigger | SINGle AUTO The modulation signal is generated continuously. RETRigger The modulation signal is generated continuously. A trigger event (internal or external) causes a restart.
  • Page 70 IEEE 802.11 (a/b/g) Remote-Control Commands Marker Settings ..........70 [:SOURce<hw>]:BB:WLAN:TRIGger:OUTPut:DELay:FIXed ............70 [:SOURce<hw>]:BB:WLAN:TRIGger:OUTPut<ch>:DELay ........71 [:SOURce<hw>]:BB:WLAN:TRIGger:OUTPut<ch>:DELay:MAXimum? ........71 [:SOURce<hw>]:BB:WLAN:TRIGger:OUTPut<ch>:DELay:MINimum? ............71 [:SOURce<hw>]:BB:WLAN:TRIGger:OUTPut<ch>:MODE ..........72 [:SOURce<hw>]:BB:WLAN:TRIGger:OUTPut<ch>:ONTime ..........72 [:SOURce<hw>]:BB:WLAN:TRIGger:OUTPut<ch>:OFFTime ..........72 [:SOURce<hw>]:BB:WLAN:TRIGger:OUTPut<ch>:PATTern ........73 [:SOURce<hw>]:BB:WLAN:TRIGger:OUTPut<ch>:PULSe:DIVider .......73 [:SOURce<hw>]:BB:WLAN:TRIGger:OUTPut<ch>:PULSe:FREQuency? [:SOURce<hw>]:BB:WLAN:TRIGger:OUTPut:DELay:FIXed <Fixed> (for R&S SMx/AMU instrumenets only) The command restricts the marker delay setting range to the dynamic range.
  • Page 71 IEEE 802.11 (a/b/g) Remote-Control Commands Marker Settings [:SOURce<hw>]:BB:WLAN:TRIGger:OUTPut<ch>:DELay:MAXimum? (for R&S SMx/AMU instrumenets only) The command queries the maximum marker delay for set- ting :BB:WLAN:TRIG:OUTP:DEL:FIX ON. Return values: <Maximum> float Range: 0 to max Example: BB:WLAN:TRIG:OUTP:DEL:FIX ON restricts the marker signal delay setting range to the dynamic range.
  • Page 72 IEEE 802.11 (a/b/g) Remote-Control Commands Marker Settings RESTart A marker signal is generated at the start of each signal sequence (period = selected number of frames). FRAMe A marker signal is generated at the start of each frame (period = PPDU + idle time).
  • Page 73 IEEE 802.11 (a/b/g) Remote-Control Commands Marker Settings Parameters: <Pattern> 32 bit pattern 0 = marker off, 1 = marker on *RST: #B,1 <BitCount> integer Range: 1 to 64 *RST: Example: BB:WLAN:TRIG:OUTP2:PATT #B000000011111111,15 sets a bit pattern. BB:WLAN:TRIG:OUTP2:MODE PATT activates the marker signal according to a bit pattern on output MARKER 2.

  • Page 74: Clock Settings

    IEEE 802.11 (a/b/g) Remote-Control Commands Clock Settings Example: BB:WLAN:TRIG:OUTP2:PULS:DIV 2 sets the divider marker signal on output MARKER 2 to the value BB:WLAN:TRIG:OUTP2:MODE PULS enables the pulsed marker signal. BB:WLAN:TRIG:OUTP2:PULS:FREQ? queries the pulse frequency of the marker signal. Response: "33 000" the resulting pulse frequency is 33 kHz.
  • Page 75 IEEE 802.11 (a/b/g) Remote-Control Commands Clock Settings Parameters: <Multiplier> float Range: 1 to 64 Increment: 1 *RST: Example: BB:WLAN:CLOC:SOUR EXT selects the external clock source. The clock is supplied via the CLOCK connector. BB:WLAN:CLOC:MODE MCH selects clock type Multiplied, i.e. the supplied clock has a rate which is a multiple of the chip rate.

  • Page 76: Psdu Settings

    IEEE 802.11 (a/b/g) Remote-Control Commands PSDU Settings Example: :BB:WLAN:CLOC:SYNC:MODE MAST the instrument is configured to work as a master one. :BB:WLAN:CLOC:SYNC:EXEC all synchronization's settings are adjusted accordingly. Usage: Event Manual operation: "Set Synchronization Settings" on page 47 [:SOURce<hw>]:BB:WLAN:CLOCk:SYNChronization:MODE <Mode> (for R&S SMBV only) Selects the synchronization mode.
  • Page 77 IEEE 802.11 (a/b/g) Remote-Control Commands PSDU Settings ............... 79 [:SOURce<hw>]:BB:WLAN:PSDU:DATA:PATTern ............... 79 [:SOURce<hw>]:BB:WLAN:PSDU:DLENgth ............80 [:SOURce<hw>]:BB:WLAN:PSDU:MAC:ADDRess<ch> ..........80 [:SOURce<hw>]:BB:WLAN:PSDU:MAC:ADDRess<ch>:STATe ...............80 [:SOURce<hw>]:BB:WLAN:PSDU:MAC:DID ...............81 [:SOURce<hw>]:BB:WLAN:PSDU:MAC:FCONtrol ............81 [:SOURce<hw>]:BB:WLAN:PSDU:MAC:FCONtrol:FDS ............81 [:SOURce<hw>]:BB:WLAN:PSDU:MAC:FCONtrol:MDATa .......... 81 [:SOURce<hw>]:BB:WLAN:PSDU:MAC:FCONtrol:MFRagments ............81 [:SOURce<hw>]:BB:WLAN:PSDU:MAC:FCONtrol:ORDer ........81 [:SOURce<hw>]:BB:WLAN:PSDU:MAC:FCONtrol:PMANagement ..........81 [:SOURce<hw>]:BB:WLAN:PSDU:MAC:FCONtrol:PVERsion ........... 81 [:SOURce<hw>]:BB:WLAN:PSDU:MAC:FCONtrol:RETRy ..........
  • Page 78 IEEE 802.11 (a/b/g) Remote-Control Commands PSDU Settings Parameters: <State> 0 | 1 | OFF | ON *RST: Example: BB:WLAN:MODE CCK selects physical layer mode CCK. BB:WLAN:PSDU:PLCP:FORM LONG selects long PLCP format. BB:WLAN:PSDU:BRAT 1MBPS sets a bit rate of 1MBPS. BB:WLAN:PSDU:BSPR OFF deactivates barker spreading.

  • Page 79: [:Source]:Bb:wlan:psdu:data:pattern

    IEEE 802.11 (a/b/g) Remote-Control Commands PSDU Settings Parameters: <DSelect> string Example: BB:WLAN:PSDU:DATA DLIS selects the Data Lists data source. MMEM:CDIR '<root>Lists' selects the directory for the data lists. BB:WLAN:PSDU:MAC:DATA:DLIS 'wlan_list1' selects file wlan_list1 as the data source. Manual operation: " PSDU Data Sorce " on page 31 [:SOURce<hw>]:BB:WLAN:PSDU:DATA:PATTern <Pattern>, <BitCount>...

  • Page 80: [:Source]:Bb:wlan:psdu:mac:address

    IEEE 802.11 (a/b/g) Remote-Control Commands PSDU Settings [:SOURce<hw>]:BB:WLAN:PSDU:MAC:ADDRess<ch> <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.

  • Page 81: [:Source]:Bb:wlan:psdu:mac:fcontrol

    IEEE 802.11 (a/b/g) Remote-Control Commands PSDU Settings [:SOURce<hw>]:BB:WLAN:PSDU:MAC:FCONtrol <FControl> 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..

  • Page 82: [:Source]:Bb:wlan:psdu:mac:scontrol:fragment:increment

    IEEE 802.11 (a/b/g) Remote-Control Commands PSDU Settings Parameters: <State> 0 | 1 | OFF | ON Range: #H0000,16 to #HFFFF,16 *RST: Example: BB:WLAN:PSDU:MAC:FCS:STAT ON activates the calculation of the FCS. Manual operation: " FCS (checksum) " on page 34 [:SOURce<hw>]:BB:WLAN:PSDU:MAC:SCONtrol:FRAGment:INCRement <Increment>...

  • Page 83: [:Source]:Bb:wlan:psdu:mac:scontrol:sequence:start

    IEEE 802.11 (a/b/g) Remote-Control Commands PSDU Settings The MAC header can only be configured in framed mode (SOURce:BB:WLAN:SMODe FRAMed). Parameters: <Increment> float Range: 0 to 1024 *RST: Example: BB:WLAN:PSDU:MAC:SCON:SEQ:INCR 2 two packets are required to increment the counter of the sequence bits.

  • Page 84: [:Source]:Bb:wlan:psdu:modulation

    IEEE 802.11 (a/b/g) Remote-Control Commands PSDU Settings Parameters: <State> 0 | 1 | OFF | ON *RST: Example: BB:WLAN:PSDU:MAC:SCON:STAT ON activates the generation of the MAC Header. Manual operation: " MAC Header " on page 34 [:SOURce<hw>]:BB:WLAN:PSDU:MODulation? The command queries the modulation type. The modulation mode depends on the selected PSDU bit rate which depends on the selected physical layer mode (SOURce:BB:WLAN:MODE).

  • Page 85: List Of Commands

    IEEE 802.11 (a/b/g) List of Commands List of Commands [:SOURce<hw>]:BB:WLAN:CLIPping:LEVel....................59 [:SOURce<hw>]:BB:WLAN:CLIPping:MODE....................60 [:SOURce<hw>]:BB:WLAN:CLIPping:STATe....................60 [:SOURce<hw>]:BB:WLAN:CLOCk:MODE..................... 74 [:SOURce<hw>]:BB:WLAN:CLOCk:MULTiplier....................74 [:SOURce<hw>]:BB:WLAN:CLOCk:SOURce....................75 [:SOURce<hw>]:BB:WLAN:CLOCk:SYNChronization:EXECute..............75 [:SOURce<hw>]:BB:WLAN:CLOCk:SYNChronization:MODE.................76 [:SOURce<hw>]:BB:WLAN:CRATe:VARiation....................63 [:SOURce<hw>]:BB:WLAN:FFORmat......................51 [:SOURce<hw>]:BB:WLAN:FILTer:PARameter:APCO25................61 [:SOURce<hw>]:BB:WLAN:FILTer:PARameter:COSine..................61 [:SOURce<hw>]:BB:WLAN:FILTer:PARameter:GAUSs.................. 61 [:SOURce<hw>]:BB:WLAN:FILTer:PARameter:LPASs..................62 [:SOURce<hw>]:BB:WLAN:FILTer:PARameter:LPASSEVM................62 [:SOURce<hw>]:BB:WLAN:FILTer:PARameter:PGAuss................. 62 [:SOURce<hw>]:BB:WLAN:FILTer:PARameter:RCOSine................62 [:SOURce<hw>]:BB:WLAN:FILTer:PARameter:SPHase................. 63 [:SOURce<hw>]:BB:WLAN:FILTer:TYPE......................60 [:SOURce<hw>]:BB:WLAN:ILEaver:STATe..................... 51 [:SOURce<hw>]:BB:WLAN:ITIMe........................51 [:SOURce<hw>]:BB:WLAN:MODE........................
  • Page 86 IEEE 802.11 (a/b/g) List of Commands [:SOURce<hw>]:BB:WLAN:PSDU:MAC:SCONtrol:FRAGment:INCRement...........82 [:SOURce<hw>]:BB:WLAN:PSDU:MAC:SCONtrol:FRAGment:STARt............82 [:SOURce<hw>]:BB:WLAN:PSDU:MAC:SCONtrol:SEQuence:INCRement........... 82 [:SOURce<hw>]:BB:WLAN:PSDU:MAC:SCONtrol:SEQuence:STARt............83 [:SOURce<hw>]:BB:WLAN:PSDU:MAC:SCONtrol:STATe................83 [:SOURce<hw>]:BB:WLAN:PSDU:MAC:STATe....................83 [:SOURce<hw>]:BB:WLAN:PSDU:MODulation?.....................84 [:SOURce<hw>]:BB:WLAN:PSDU:SCOunt..................... 84 [:SOURce<hw>]:BB:WLAN:SCRambler:MODE....................53 [:SOURce<hw>]:BB:WLAN:SCRambler:PATTern....................54 [:SOURce<hw>]:BB:WLAN:SERVice[:PATTern]....................54 [:SOURce<hw>]:BB:WLAN:SETTing:CATalog?....................55 [:SOURce<hw>]:BB:WLAN:SETTing:DELete....................55 [:SOURce<hw>]:BB:WLAN:SETTing:LOAD....................55 [:SOURce<hw>]:BB:WLAN:SETTing:STORe....................56 [:SOURce<hw>]:BB:WLAN:SETTing:STORe:FAST..................56 [:SOURce<hw>]:BB:WLAN:SLENgth......................56 [:SOURce<hw>]:BB:WLAN:SMODe........................ 57 [:SOURce<hw>]:BB:WLAN:STANdard......................57 [:SOURce<hw>]:BB:WLAN:STATe........................58 [:SOURce<hw>]:BB:WLAN:TDWindowing:STATe...................

  • Page 87: Index

    IEEE 802.11 (a/b/g) Index Index Addresses ................. 35 Idle time ................26 Application cards ..............6 Increment every ..............37 Application notes ..............6 Interleaver active OFDM ........... 33 Arm ...................42 Load IEEE 802.11a-g WLAN settings ....... 23 Baseband filter ..............38 Brochure ................6 BxT ..................
  • Page 88 IEEE 802.11 (a/b/g) Index Scrambler OFDM .............. 32 Sequence configuration ............ 26 Sequence control .............. 35 Sequence length ............... 26 Service field (hex) OFDM ..........33 Service field clock bits (CCK, PBCC) ........ 33 Service manual ..............5 Set synchronization settings ..........47 Set to default ..............

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