Tektronix RFX100 Printed Help Document

RFXpress® RFX100 Advanced RF/IF/IQ Waveform Creation and Editing Software for the AWG5000/B & AWG7000/B Series Generators PrintedHelpDocument

www.tektronix.com

077-0045-02

Copyright © Tektronix. All rights reserved. Licensed software products are owned by Tektronix or its subsidiaries or suppliers, and are protected by national copyright laws and international treaty provisions.

Tektronix products are covered by U.S. and foreign patents, issued and pending. Information in this publication supersedes that in all previously published m aterial. Speciﬁcations and price change privileges reserved.

TEKTRONIX and TEK are registered trademarks of Tektronix, Inc.

Tektronix is pleased to acknowledge Mr Joan Mercade a s the author of portions of this Tektronix RFXpress Software providing baseband and modulation functionality.

RFXpress RFX100 Online Help Version 2.0, part number 076-0081-02.

Contacting Tektronix

Tektronix, 14200 SW Karl Braun Drive P.O . B o x 5 0 0 Beaverton, OR 97077 USA

Inc.

For product

In North America, call 1-800-833-9200. Worldwide, visit ww w.tektronix.com to ﬁnd contacts in your area.

information, sales, service, and technical support:

Table of Contents

Introduction

Welcome............................................................................................................. 1

Related Documentation ........... .................................. ................................ ............... 1

Conventions.......... ................................ .................................. ............................. 2

Feedback.......................... ................................ .................................. ................. 2

Getting Started

Minimum System Requirements................................. .................................. ............... 3

Ordering RFXpress.................................. ................................ ............................... 3

Installation........................................................................................................... 4

Connection Setups

Setup for RF Signal Generation. .................................. .................................. ......... 4

Setup for IF Signal Generation............................................................................... 5

Setup for AWG IQ Signal Generation....................................................................... 5

Table of Contents

Operating Basics

About Basic Operations............................................................................................ 9

Overview of the Software ........................................................................................ 10

Starting the Software .................... .................................. ................................ ........ 11

Using the Software to Create a Signal........................................................................... 11

Exiting the Software. .... . .... . .... ..... ... . . .... . .... ..... .... . .... . .... ... . . .... . .... . .... ..... .... . .... . .... ... . 12

File Name Extensions and Directories .......................................................................... 12

Applications, Setup Files, and Data Files ..................... ................................ .................. 12

Menus and Toolbars

Menu Bar ...................................................................................................... 13

Standard Toolbar.............................................................................................. 16

Status Bar ...................................................................................................... 17

Waveform List ............ .................................. ................................ .................. 17

Toolbar Options

Select Application ............................................................................................ 19

Signal Type.. .................................. .................................. .............................. 19

Compile................ .................................. ................................ ...................... 20

On/Off.............................. .................................. .................................. ........ 20

Run ................. .................................. ................................ .......................... 20

Dialog Boxes

Open Setup .................................................................................................... 21

Open Data ..................................................................................................... 21

Save Setup............. .................................. .................................. .................... 21

RFXpress RFX100 User Manual i

Table of Contents

Save Data ...... ................................ .................................. .............................. 21

Import Data from a File ...... .................................. ................................ .............. 21

Import from Tektronix Oscilloscope. . .... ..... ..... ... . . .... . .... . .... . .... . .... . .... . .... . .... . .... . .... .. 23

Find Instruments .............................................................................................. 25

Graph......................................... .................................. ................................ 26

Compile Settings.................................... .................................. ........................ 28

Option Installation............................................................................................ 31

Overview ...................... .................................. .................................. ............ 33

Generic Signal Dialog Boxes

Calibration for Generic and Radar Signals................................................................. 35

PRBS Editor ................................. .................................. ................................ 38

Data Source Values ........................................................................................... 39

Modulation File1(Samples).................................... ................................ .............. 40

Modulation File2(Symbols) ................................................................................. 41

Symbol Map........................... .................................. ................................ ...... 42

UWB-WiMedia Dialog Boxes

Calibration for UWB-WiMedia Signal ................................. .................................. .. 45

Marker Mapping .............................................................................................. 48

Tone Nulling. . .... . .... . .... . .... ... . . .... . .... . .... . .... . .... . .... ..... ..... .... . .... . .... . .... . .... . .... . .... 49

Hopping Pattern............................................................................................... 50

Process Preferences........................................................................................... 51

Custom Settings............................................................................................... 53

Frame Payload .......................... .................................. .................................. .. 54

Radar Dialog Boxes

Compile Settings for the Radar Application .............................................................. 55

Creating a Generic Signal

Setup

Single Carrier........................................ .................................. ........................ 59

Multi Carriers ... ................................ .................................. ............................ 60

Editing Carrier Details ....................................................................................... 61

Selecting the Base Data.. ................................ .................................. .................. 63

Modulation for Carriers ...................................................................................... 63

Filter for Carriers . .... ... . . ... . . .... . .... . .... . .... . .... . .... . .... ..... ..... ... . . .... . .... . .... . .... . .... . .... 64

Hopping

Hopping Parameters .......................................................................................... 66

Power Ramping

Power Ramping Parameters ................................................................................. 66

I/Q Impairments

Carrier Leakage for Single Carrier...................... .................................. .................. 67

Quadrature Error for Carriers................................................................................ 68

I/Q Imbalance for Carriers ............................... .................................. .................. 68

ii RFXpress RFX100 User Manual

Nonlinear Distortions for Carriers .......................................................................... 69

Hardware Skew for Carriers......................... .................................. ...................... 69

I/Q Swap for Carriers............................... .................................. ........................ 70

Distortion Addition

Ampliﬁer Distortion for Carriers............................................................................ 70

MultiPath

Multipath Parameters for Carr iers ... . .... . .... . .... . .... . .... ..... . .... ... . . .... . .... . .... . .... . .... . .... . . 71

Interference Addition

Signal Addition for Carriers . .... . .... . .... . .... . .... ..... . .... ... . . .... . .... . .... . .... . .... . .... . .... . .... .. 72

Offset for Carriers ............................................................................................ 73

Sinusoidal for Carriers ... ................................ .................................. .................. 74

Creating a UWB-WiMedia Signal

Conformance Mode ............................................................................................... 77

Custom Mode ............................ .................................. .................................. ...... 77

Conformance Mode Setup

Packet Group Details for Conformance Mode............................................................. 78

Packet Details for Conformance Mode..................................... ................................ 80

Hopping Details for Conformance Mode .................................................................. 82

Custom Mode Setup

Packet Group Details for Custom Mode ............................... .................................. .. 83

Setting PPDU Details ... ..... ... . . .... . .... . .... . .... . .... . .... . .... . .... ... . . ... . . .... . .... . .... . .... . .... .. 84

PLCP Preamble ......................... .................................. .................................. .. 85

PLCP Header ............................ .................................. .................................. .. 86

PSDU............................. .................................. .................................. .......... 87

Packet Sync Sequence.................................. ................................ ...................... 87

PHY Header................................................................................................... 90

MAC Header .................................................................................................. 91

I/Q Impairments

Carrier Leakage for UWB-WiMedia . ................................ .................................. .... 91

Quadrature Error for UWB-WiMedia ...................................................................... 92

I/Q Imbalance for UWB-WiMedia........................................ ................................ .. 92

Nonlinear Distortion for UWB-WiMedia .................................................................. 93

Hardware Skew for UWB-WiMedia.................................. ................................ ...... 93

I/Q Swap for UWB-WiMedia ........................... ................................ .................... 94

Distortion Addition

Ampliﬁer for UWB-WiMedia ............................................................................... 94

MultiPath

Multipath Parameters for UWB-WiMedia .. . . .... . .... . .... . .... ... . . .... . .... . .... . .... ... . . .... . .... . ... 95

Interference Addition

Signal Addition for UWB-WiMedia... . .... ... . . .... . .... . .... . .... ... . . .... . .... . .... . .... ... . . .... . .... . . 96

Offset for UWB-WiMedia ................................................................................... 97

Table of Contents

RFXpress RFX100 User Manual iii

Table of Contents

Gated Noise for UWB-WiMedia.. .................................. ................................ ........ 98

Sinusoidal for UWB-WiMedia ............ .................................. .............................. 101

Real-World Signal Interference ..... .................................. ................................ .... 102

Calibration for UWB-WiMedia Signals

Using Calibration for IF/RF Signals........................................................................... 105

Creating a Radar Signal

Carrier Setup ............................... ................................ .................................. .... 107

Pulse

Pulse Setup .. ................................ .................................. .............................. 107

Pulse Envelope.............................................................................................. 108

Staggered PRI ............................................................................................... 109

Modulation .................................................................................................. 111

Hopping...................................................................................................... 114

Pulse Impairments .. .................................. ................................ ...................... 114

I/Q Impairments

Hardware Skew for Radar ................................................................................. 115

Carrier Leakage for Radar ................................... .................................. ............ 116

Quadrature Error for Radar................................................................................ 116

I/Q Imbalance for Radar ................................................................................... 117

I/Q Swap for Radar ................. .................................. .................................. .... 117

Interference Addition

Signal Addition ... ... . . .... . .... . .... . .... . .... . .... ... . . .... . .... . .... . .... . .... . .... ... . . .... . .... . .... . .. 117

Noise ............... ................................ .................................. ........................ 118

Instrument Control

Controlling an Instrument . .... . .... . .... . .... . .... . .... ... . . .... . .... . .... . .... . .... . .... ..... ..... .... . .... . .. 119

Controlling an Arbitrary Waveform Generator (AWG) . .... ... . . .... . .... . .... . .... .... . .... . .... . .... . .... 120

Connecting to and Controlling an Oscilloscope.. . ... . . .... . .... . .... . .... . .... . ... . . .... . .... . .... . .... . .... 122

Connecting to and Contr olling a Performance Signal Generator (PSG).. . .... ..... . .... ... . . .... . .... . ... 123

Instrument Contol in the Radar Application

Controlling an Arbitrary Waveform Generator from the Radar Application . .... . .... . .... . .... . .... 125

Settings View . .... . ... . . .... . ..... ..... . .... . .... . .... . ... . . .... . ..... ..... . .... . .... . .... . ... . . .... . ..... .. 125

Sequence View ............................................................................................. 126

Trigger Options ............................................................................................. 127

Event Options ............................................................................................... 128

iv RFXpress RFX100 User Manual

Graphing

Zooming Graphs................................................................................................. 129

Pulse Shape....................................................................................................... 12

I(t), Q(t)................... ................................ .................................. ...................... 129

CCDF Plot.................................... .................................. .................................. 130

Spectrum.......................... .................................. ................................ .............. 131

Constellation Plotting .... . .... ... . . .... . .... . .... . .... . .... . .... ..... ..... ... . . .... . .... . .... . .... . .... . .... ... . 132

Eye Diagram ..................................................................................................... 133

Spectrogram...................................................................................................... 1

FFT of Coherent Pulse Interval ................................................................................ 134

Reference

Error Messages

Error Messages for Generic Signal . .................................. ................................ .... 137

Error Messag

Error Messages for Radar.................................................................................. 139

Miscellaneous Error Messages ............................................................................ 143

Miscellaneous Error Messages 2.... .................................. .................................. .. 145

Shortcut Keys .................. ................................ .................................. ................ 146

RFXpress Opt

AWG Spe ciﬁcations ............................................................................................. 148

Interleave ....... .................................. .................................. .............................. 148

PRBS Editor Starting Values....... .................................. .................................. ........ 150

Ampliﬁer Distortions............ .................................. .................................. ............ 151

Nonlinear Impairments.................................. .................................. ...................... 151

Image Calib

Types of Modulation ............................................................................................ 153

Frequently Asked Questions ................................................................................... 157

Table of Contents

es for UWB-WiMedia ................................ .................................. .... 138

AWG Sequence Window-related errors ............................................................. 143

ions and AWG Models ......................................................................... 146

ration................................................................................................ 152

Index

RFXpress RFX100 User Manual v

Table of Contents

vi RFXpress RFX100 User Manual

Introduction Welc ome

Welcome

RFXpress RFX100 is a software application that creates digitally modulated baseband, IQ, IF, RF, UWB-WiMedia, and Radar signals that can be generated through arbitrary waveform generators (AWG). This software arbitrary waveform generators and can also run from an external PC.

runs as an integral part of AWG5000/AWG5000B and AWG7000/AWG7000B series

Using RFXpre modulation schemes and create single or multi-carrier signals where each carrier can be independently deﬁned. For each carrier, you can apply impairments such as quadrature error and I/Q imbalance, add interferences such as sinusoidal interference, and deﬁne the graphs to create. Upon compilation, the signal can be viewed as graphs, sent to an arbitrary waveform generator, and saved for later use. Compilation options include sending signals directly to the AWG and completely eliminating the wrap-around effects fo continuously without any discontinuity or glitch in the tim e, frequency, modulation, or channel coding domains. Waveform transfer a nd control of the AWG5000/AWG5000B and AWG7000/AWG7000B series can be performed directly from RFXpress.

Waveforms captured from oscilloscopes and real-time spectrum analyzers can be modiﬁed in RFXpress before they are regenerated.

You can create UltraWideBand WiMedia signals in the Conformance and Custom modes. In the conformance mode, you can either select a standard setup or deﬁne your own setup based on the UWB standards. In the Custom mode, you can create a customized signal by deﬁning packet parameters and setting processing preferences. The Calibration feature for the U WB-WiMedia module allows you to

correction ﬁles and apply these correction ﬁles to channels during compilation.

create

The RFXpress RFX100 radar application supports basic pulse generation of different shapes and

ation types.

modul

ss RFX100 (referred to as RFXpress), you can deﬁne baseband I and Q signals with various

und in arbitrary waveform generators. This provides seamless signals that can be played back

See also:

ation (see page 105)

alibr

Find Instruments (see page 25)

RFXpress RFX100 User Manual 7

Getting Started Setup for AWG IQ Signal G eneration

8 RFXpress RFX100 User Manual

Operating Basics About Basic Operations

About B asic Operations

The basic operations section describes the software, tells how to start the software, use the menus and toolbars, and describes the dialog boxes.

In this online help, all menu selections are indicated with Menu name and Menu options separated by ">". Youcanaccessacommandoramenuoptioninmore than one way. Several main menu options are available in which open with a right-click, are provided for editing, creating and viewing graphs, importing data from a ﬁle or a Tektronix oscilloscope, and transferring a waveform to an arbitrary waveform generator.

Some dialog boxes also have a Help button that displays help for that dialog box.

a toolbar that you can use instead of selecting the option from the main menu. Shortcut menus,

Detailed op Radar, Calibration for WiMedia Signals, Instrument Control, and Graphing. The References section lists Error Messages, Shortcut Keys, and provides a note on Interleaving and Types of Modulation.

The following ﬁgure shows the application screen, the menu, the toolbar, and other elements of t he user interface.

erations and parameters are described in the sections on Generic Signal, UWB-WiMedia,

RFXpress RFX100 User Manual 9

Operating Basics Overview of the Software

Overview of the Software

RFXpress is a software application that creates digitally modulated baseband, IQ, IF, RF, UWB-WiMedia, and Radar signals that can be generated through arbitrary waveform generators (AWG). This softw are runs as an integral part of AWG5000/AW G5000B and AWG7000/AWG7000B series arbitrary waveform generators and can also run from an external PC.

Features of RFXpress

Baseband data generation: Deﬁne baseband I and Q signals using a variety of modulation schemes such as, BPSK, QPSK, PI/4 QPSK, OQPSK, SDPSK, 8-PSK, O-8PSK, QAM16, QAM32, QAM64, QAM128, QAM256, QAM256, QAM512, QAM1024, GMSK, 2-FSK, 4-FSK, 8 -FSK, 16-FSK, 32-FSK, AM, FM, and PM.

Multi-carrier setup: Deﬁne multiple RF/IF carriers in a single waveform. Each carrier can be independently deﬁned with parameters such as carrier frequency, symbol rate, modulation type, and baseband ﬁlters.

Single or multiple pulse groups to form a pulse train: Each pul with various predeﬁned pulse shapes and user deﬁ ned shapes for a pulse group.

Allows you to apply various modulation schemes or deﬁne your own.

Allows you to have Pulse- to-Pulse hopping within a pulse group and to apply impairments like Edge Jitter, Width Jitter, Overshoot, Ripple and Droop on a pulse group.

IQ impairments: Apply impairments including quadrature error and quadrature imbalance.

Generate the following graphs:

Frequency Domain: Spectrum

I v Q: Constellation

Time Domain: I(t) and Q(t) vs. time, and Pulse shape

Statistical: CCDF and Eye Diagram

Time vs Frequency: Spectrogram and Coherent Pulse Interval

Distortion measurement for system calibration: To maintain system integrity and coherency with Amplitude, Phase inband ﬂatness, and skew between separate channels. The setup includes capturing data from a TDS oscilloscope and a real-time spectrum analyzer and downloading the data to generate the correction data.

Noise/interference generation and addition: Generate and add interference for waveforms. Generate gated noise on speciﬁc frames designated by the user.

se group can be independently deﬁned

Capture and Replay: Waveforms captured from oscilloscopes and real-time spectrum analyzers can be modiﬁed in RFXpress before they are regenerated.

10 RFXpress RFX100 User Manual

Operating Basics Starting the Software

Wrap around: RFXpress completely eliminates all the wrap-around effects found in arbitrary waveform generators, providing seamless signals that can be played back continuously without any discontinuit

Connectivity between AWG, oscilloscope, and Agilent Performance Signal Generator® (PSG). The ability to identify and connect to a Tektronix Arbitrary Signal Generator (AWG), a Tektronix oscilloscope, and the Agilent PSG®, and the AWG sequence mode is to optimize the memory and create large number of pulses.

y or glitch in the time, frequency, modulation, or channel c oding domains.

to conﬁgure their setups remotely. The radar application uses

Starting the Software

From the Start menu, click All Programs > Tektronix RFXpress > RFXpress. You can also double-click the RFXpress shortcut on the desktop.

You can use the software in three modes:

RFXpress on any AWG5000/AWG5000B or AWG7000/AWG7000B series instrument. In this case, the software automatically detects the AWG software. You can transfer data directly to the AWG. The status bar shows "AWGXXXX Online".

RFXpress on a PC with the AWG software running in the ofﬂine mode. In this case, the AWG software has to be started before starting RFXpress. You can transfer data to the AWG ofﬂine software. The status bar shows "AWGXXXX Ofﬂine".

RFXpress on a PC without the AWG software. In this case, the software does not detect the AWG software, and you cannot transfer data to the AWG (although you can create and store the waveform for later use). The status bar shows "AWGXXXX Not Available".

UsingtheSoftwaretoCreateaSignal

Using RFXpress, you can generate a signal as follows:

1. Select an application or module: Generic Signal, UWB-WiMedia, or Radar.

2. Select the signal type: IF/RF or IQ.

3. For a Generic signal, select the number of carriers: Single or Multi-carrier. For a UWB signal, select

the m od e: Conformance or Custom. For a Radar signal, select the number of pulses.

4. For a Generic signal, deﬁne the carrier parameters: Frequency, Modulation, Amplitude, Filter and

others. For a UWB signal, select the setup and deﬁne the selected packet group and packet parameters. For a Radar signal, select the pulse envelope, frequency, and other pulse par ameters.

5. Select the compilation options and compile the signal.

You can also specify the graphs that you want to create and view them in the Graph Preview window. You can transfer the signal to an arbitrary waveform generator in the I nstrument Control window. Importing ﬁles and replicating waveform ﬁles work with only the following instruments:

RFXpress RFX100 User Manual 11

Operating Basics Exiting the Software

Oscilloscopes: Tektronix TDS6000, DPO70000, and DPO7000 series

Arbitrary Waveform Generators: Tektronix AWG400, AWG500, AWG600, and AWG700 series

Real-time Spectrum Analyzers: Tektronix RSA3000 and RSA60000 series

Exiting the Software

Select File > Exit to exit the application. If you have not saved the waveforms, you are prompted to do so.

File Name Extensions and Directories

The software uses the following ﬁle name extensions:

Table 3: File name extensions and their descriptions

File name extension Description

.rfs Setup ﬁle of the selected application

.rfd Data ﬁle of the waveform (generic signal and ultra wide

band signal)

.smp

.rfc Correction ﬁle

xxx

Symbol ﬁle

The software uses the following directories:

Table 4: Directory names and their descriptions

Directory Description

C:\Program Files\Tektronix\RFXpress\System Contains the application ﬁles and executables

C:\Program Files\Tektronix\RFXpress\Documentation Contains the related documentation as text and PDF ﬁles

C:\Program Files\Tektronix\RFXpress\Samples Contains sample waveform ﬁles

xxx

Applications, Setup Files, and D ata Files

An application is a module that you can use to create speciﬁc types of waveforms, for example Generic Signal and UWB-WiMedia. Applications that are available but have not been purchased appear in the Application list but are disabled.

You can only have one Setup File (.rfs) open at a time and only one application in use at a tim e. If you change the application, you will be prompted to save the open ﬁle.

12 RFXpress RFX100 User Manual

Operating Basics Menu Bar

Selecting an application: In the Select ﬁeld, select an application from the list. When you select an application (Generic Signal, UWB-WiMedia, or R adar), the default settings are displayed for the currently sel

Setup File (.rfs): A Setup File is a collection of settings that describes a single or multiple waveforms. Once you compi Compiled data ﬁles for the current session appear in the Waveform List. After you select the Application, a default Setup File opens automatically. If a setup ﬁle is open with unsaved c hanges and you try to create a new ﬁle or change applications, you are prompted to save the ﬁle. Toopenanexistingsetup ﬁle, select File > Open Setup.

The rfs ﬁle content varies depending on the selected application (Generic or UWB-WiMedia). By default, thenameoftherfsﬁle is derived from the application name.

Data F ile (.rfd): You can save a compiled Setup File as a Data File using File > Save Data or Save Data As. Files that you import from other instruments become data ﬁles. Select File > Save or Save As to save these data ﬁles. To open an existing data ﬁle, select File > Open Data.

ected application.

le the setup ﬁle (using Waveform > Compile), you can save the ﬁle as a Data File (.rfd).

NOTE. Eac information and sampling rate.

Menu Bar

The RFXpress menu has the following items:

File

hrfdﬁle can store one of the three formats: IF/RF, I, and Q. An rfd ﬁle stores the version

RFXpress RFX100 User Manual 13

Operating Basic s Menu Bar

Use the File menu to:

Restore the default setup for the currently active application

Create new waveform setups

Open, close and save waveform setups (.rfs format)

Open, close and save data ﬁles (.rfd format)

t data from a ﬁle (created by another software)

Impor

Import data from a Tektronix oscilloscope

Exit the software

Vie w

Use the View menu to:

View the Standard toolbar

View the Status toolbar

Conﬁgure

Use the Conﬁgure menu to:

Select an application: Gen eric Signal, UWB-WiMedia, or Radar. UWB-WiMedia and Radar

are available only if they have been purchased

Open the Find Instruments dialog box to m ake instrument connections

Waveform

14 RFXpress RFX100 User Manual

Operating Basics Menu Bar

Use the Waveform menu to:

Compile the currently active Waveform Setup

Set Compilation options

Open the Graph Setup dialog box to select the graphs

System

Use the System menu to:

Run

Stop

Turn all channel outputs on o r o ff

Open the Ca

Window

libration dialog box and set the parameters to calibrate the signal

RFXpress RFX100 User Manual 15

Operating Basic s Standard Toolbar

Use the Window menu to:

View the Waveform List window

Preview the Graphs

Open Instrument Control window

Open the Overview window

Close all windows

Help

Use the Help menu to:

Open the online help

Displayhelpspeciﬁc to the currently active application

Display technical support on the Tektronix Web site

Display information about the application, such as version number

Standard Toolbar

The Standard toolbar is always displayed by default. Select View > S tandard toolbar to hide or show the toolbar.

The Standard toolbar has the following options that you can select:

Select Application (see page 19)

Signal Type (see page 19)

Calibration (see page 35) Calibration for Generic Signal

Overview (see page 33)

Find Instruments (see page 25)

16 RFXpress RFX100 User Manual

Operating Basics Status Bar

Graph (see page 26)

Compile (see page 20) and Compile Settings (see page 28)

Status Bar

The S tatus Bar is always displayed by default. Select View > Status Bar to hide or show the status bar. The status bar shows the selected application, the AWG mode, and the active waveform names. The status of calibration (On/Off) is also displayed.

Waveform List

Window > Waveform List

The Waveform List is a ﬂoating window and can be moved anywhere in the display area. By default it opens in the leftmost area of the display window. The Waveform List window can be kept open by pushing the pin in the top right corner, or closed and opened as you like. To view the waveform list, from the menu select Window > Waveform List.

After you select a signal to generate and set the parameters for it, you must compile it to create the data. Once you compile a signal (using Compile from the toolbar), waveform data is created and added to the waveform data. The maximum number of w aveforms that can be displayed in the waveform list is 13,000. When the number of waveforms exceeds this limit, a warning message appears: Number of waveforms is over the maximum limit of 13,000.

To save a waveform that is available in the list, select the waveform and select File > Save Data or Save Data As. You can also right-click the selected waveform and choose Save Data As. The compiled waveform or data ﬁle is saved as a data ﬁle (.rfd) in the speciﬁed location. The data ﬁles are stored in the path where the application is installed.

NOTE.

compile the waveform again from the setup, if you have saved the setup using File > Save Setup or Save Setup As. The setup ﬁle is an rfs ﬁle.

You can select the following options from the shortcut menu:

list. The Waveform list displays the Name, Length, Sampling Rate and Format of the waveform

If you close the software without saving the compiled waveform, the waveform is lost. You can

RFXpress RFX100 User Manual 17

Operating Basic s Waveform List

Table 5: Shortcut menu options and their description

Selection

Description

Send to AWG Enabled only if the AWG software is running and when a

waveform is selected. Sends the selected waveform data to an Arbitrary Waveform Generator. Select the channel to which to send the data.

Show Graph Enabled only when a waveform is selected. Plots a graph of

the selected type: Frequency Spectrum, Time Domain and CCDF. You can also select G

raph Settings... (see p age 26)

and choose the graphs from those available.

Save Data As... Enabled only when a waveform is selected. Saves the

selected waveform data as a .rfd ﬁle in the speciﬁed name and location.

Import from File... (see page 21) Imports data into the software from a ﬁle. Choose the ﬁle

and location from which to import data.

Import from Tektronix Oscilloscope... (see page 23) Imports data from a Tektronix oscilloscope that is connected

to the instrument on which the software is running.

Delete All

Enabled only when a waveform or waveforms are available in the Waveform List. Deletes all the waveforms shown in the waveform list.

Delete

Enabled only when a waveform is selected. Deletes the selected waveform.

Rename...

Enabled only when a waveform is selected. Opens a dialog box that allows you to enter a waveform name.

xxx

You can also drag and drop a waveform from the Waveform List to Instrument Control. When you drag and drop a waveform, the sampling rate is automatically set in the instrument.

The Rename…, Save As… and Delete buttons appear at the bottom of the Waveform List. These buttons are available only when a waveform is selected.

18 RFXpress RFX100 User Manual

Operating Basics Select Application

Table 6: Waveform list buttons and their description

Selection

Rename...

Save... Saves the selected waveform as an .rfd ﬁle.

Delete

xxx

Description

Opens a dialog waveform.

Deletes the selected waveform.

box and allows you to rename the selected

Generating Graphs

In the shortc and CCDF. Not all the graphs are available for all waveform formats and all applications. The following table lists the availability of the graphs for various waveform formats.

Table 7: Waveform formats and available graphs

format

When both I and Q waveforms are selected

When I waveform is selected

When Q waveform is selected

When IF/RF waveform is selected

xxx

For the Radar application, the available graphs are Spectrum, Spectrogram, CPI, I Vs Time, and Q Vs time.

ut menu, from the Graph option you can select the following graphs: Time Domain, Spectrum,

GraphsSelected waveform

CCDF Spectrum

Available Available Not available

Not available Not available Available

Not available Available Available

Time domain

Select Application

Conﬁgure > Select Application

Before you create a new Waveform S etup and Setup File, you must identify the application. Do this by clicking on the Application ﬁ eld and selecting either Generic Signal, UWB-WiMedia, or Radar. The default settings for the currently selected application will be displayed.

NOTE. The UWB-WiMedia Custom Mode and Radar are enabled only if you have purchased the options.

Signal Type

Set the signal type from the drop-down list to either IF/RF or IQ. Another way to select the signal type is by using the C

RFXpress RFX100 User Manual 19

ompile Settings (see page 2 8) dialog box.

Operating Basic s Compile

Compile

Waveform > Compile

To compile a currently active waveform:

1. Click Compile in the Standard toolbar. The waveform is compiled and displayed in the Waveform List.

2. From th e Waveform List (see page 17), you can select Send to AWG, Show Graph, Save Data as,

On/Off

Click the On/Off button to turn on or turn off the arbitrary waveform generator (AWG) channel output.

Run

Click the Run button to turn on or turn off the Run state of the arbitrary waveform generator (AWG). If the application is running on an AWG or using an ofﬂine mode of the AWG software, the compiled waveform is directly output to the channel. The channel is turned on and generates the signal. The signal generation is indicated when the Run button changes to green.

Delete, or Rename the waveform.

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Operating Basics Open Setup

Open Setup

File > Open Setup

Youcanopenasetupﬁle from the selected location. All ﬁles have the ﬁle name extension .rfs.

Open Data

File > Open D ata

You can open a data ﬁle from the selected location. All ﬁles have the ﬁle name extension: .rfd.

Save Setup

File > Save Setup, File > Save Setup As...

You can save the setup ﬁle in any of the following formats: .rfs and .txt.

Use File > Save Setup to save an existing setup ﬁle with the same name. If you are saving the setup for the ﬁrst tim e, the Save Setup option works exactly as the Save Setup As... option.

Use File > Save Setup As... to save the setup ﬁle with another ﬁle name.

Save Data

File > Save Data, File > Save Data As...

You can save the data ﬁle in either .rfd or .txt format. You must compile a setup before you can save the data. If you try to save a setup as data without compiling, you are prompted to compile the setup.

UseFile>SaveDatatosaveanexistingdataﬁle with the same name. If you are saving the data for the ﬁrst tim e, the Save Data option works exactly as the Save Data As... option.

UseFile>SaveDataAs... tosavethedataﬁle with another ﬁle name.

ort Data from a File

Imp

e > Import from File

Fil

RFXpress RFX100 User Manual 21

Operating Basics Import Data from a File

You can import a waveform ﬁle created in another software, and import the resulting waveform into RFXpress. To import data from a ﬁle, select File > Import from ﬁle. This dialog box is displayed. Navigate to the directo

ry of choice and select the ﬁle to import.

You can impor t ﬁles of the following types:

.wfm from oscilloscopes and arbitrary waveform generators

.iqt from real-time spectrum analyzers (RSA3000 series)

.tiq from real-time s pectrum analyzers (RSA6000 series)

.pat from arbitrary waveform generators

.isf from oscilloscopes

22 RFXpress RFX100 User Manual

+ 139 hidden pages

Tektronix RFX100 Printed Help Document

Specifications and Main Features

Frequently Asked Questions

User Manual