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RF Generic Waveform
Primary User
59 pgs1.46 Mb0
Programmer
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Tektronix RF Generic Waveform Primary User

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RF Generic Signal
ZZZ
Plug-in Application
Printable Help Document
Revision A
*P077124702*
077-1247-02
ZZZ
Printable Help Document
Revision A
w.tek.com
ww
077-1247-02
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 material. Specifications and price change privileges reserved.
TEKTRONIX and TEK are registered trademarks of Tektronix, Inc.
®
SourceXpress
is a registered trademark of Tektronix, Inc.
Microsoft and Windows are registered trademarks of Microsoft Corporation.
Supports RF Generic Signal plug-in Version 3.1.x and above.
Help part number: 076–0396–02
PDF of Help system part number: 077–1247–02
Contacting Tektronix
Tektronix, Inc. 14150 SW Karl Braun Drive P. O . B o x 50 0
rton, OR 97077
Beave USA
For product information, sales, service, and technical support:
In North America, call 1-800-833-9200. Worldwide, visit ww w.tek.com to find contacts in your area.
Table of Contents
Introduction
Welcome............................................................................................................. 1
Key features ......................................................................................................... 2
Documentation......................................... ................................ ............................. 3
Support information....... .................................. ................................ ....................... 3
Orientation
Elements of the display ............................................................................................ 5
Plug-in selection ....................................... ................................ ............................. 5
Signal Format selection........... ................................ .................................. ............... 6
Compile button..................... ................................ ................................ ................. 6
Reset Plug-in button....... ................................ ................................ ........................ 12
Help button............... .................................. ................................ ........................ 12
Table of Contents
Carrier list
Carrier list .................. ................................ .................................. ...................... 13
Add Carrier button..... .................................. ................................ .......................... 14
Add Multiple Carriers... button . . . . . . ............................................................................ 14
Setup tab
Setup tab .............................. ................................ ................................ .............. 17
Common Setup parameters....................................................................................... 17
Digital Modulation setup ......................................................................................... 18
Analog Modulation setup......................................................................................... 21
Noise setup ......................................................................................................... 22
Custom Modulation setup .......... ................................ ................................ .............. 22
PRBS Editor........................................................................................................ 25
Modulation types supported...................................................................................... 26
Hopping
Hopping............................. ................................ .................................. .............. 27
IQ Impairments
IQ Impairments .................................................................................................... 31
Power Ramp
Power Ramp........................................................................................................ 33
RF Generic Signal Printable Help Document i
Table of Contents
Interference Addition
Interference Addition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .......................................................... 35
Distortion
Distortion ................. .................................. ................................ ........................ 37
MultiPath
MultiPath . .......................... .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .......................... .. . . . . . . . . . . 39
Symbol mapping
Symbol mapping........... .................................. ................................ ...................... 41
Sub Carrier Modulation tab
Sub Carrier Modulation tab....................................................................................... 43
S-Parameter tab
S-Parameter license ............................................................................................... 45
S-Parameter tab ...................... .................................. ................................ ............ 45
S-Parameter file descriptions .................. ................................ .............................. 48
Aggressor signals ............................................................................................. 50
Licensing
Licensing ........................................................................................................... 51
Index
ii RF Generic Signal Printable Help Document
Introduction Welcom e
Welcome
The RF Generic Waveform plug-in is a waveform creation application that is used to create digitally modulated signals with multiple carriers.
The RF Generic Waveform plug-in is designed to integrate and operate seamlessly as an enhancement to the following products:
SourceXpress waveform creation software
AWG70000 series arbitrary waveform generators
AWG5200 series arbitrary waveform generators
Once installed, the plug-in becomes available as another waveform plug-in application.
This illu plug-in interface is identical whether it is used from SourceXpress or installed on a generator.
stration shows the RF Generic Waveform plug-in viewed from the SourceXpress application. The
RF Generic Signal Printable Help Document 1
Introduction Key features
Key features
Define different kinds of waveforms. Create a variety of signals, such as: signals with Digital Modulation, signals with Analog Modulation, Noise signals, and signals with Custom Modulation.
Multi-carrier setup. Define multiple RF/IF or IQ carriers in a single waveform. Each carrier can be independently defined with parameters.
Baseband data generation. Define baseband I and Q signals using a variety of modulation schemes.
Substantial list of modulation types supported. For example, digital modulation types such as PSK, APSK, QAM, GMSK, FSK, CPM, ASK, and OOK are supported.
IQ impairments. Apply impairments including quadrature error and quadrature imbalance.
Noise/interference generation and addition. Generate and add interference for waveforms.
Elimin signals that c an be played back continuously.
Add sub
Provide S-parameter emulation of RF components.
Add Impairments. Multipath, Sinusoidal Interference, Frequency offset, and Non Linear Amplifier Distortion.
Define frequency hopping.
ates the wrap-around effects found in arbitrary waveform generators, providing seamless
-carrier modulation.
2 RF Generic Signal Printable Help Document
Introduction Documentation
Documentation
In addition to this application Help system, the following documentation is available for the software.
All documentation is available on the Tektronix Web site (www.tek.com/manual/downloads
To read about Use these documents
RF Generic plug-in operation and user interface help
RF Generic plug-in programmer commands Access the plug-in programmer manual for the syntax of remote commands
SourceXpress operation and user interface help Access the SourceXpress application help from the Help menu for
SourceXpress programmer commands Access the SourceXpress programmer manual for the syntax of remote
Connected instrument operation and user interface help (such as an AWG70000 series generator)
Access the plug-in application help from the plug-in Help menu for information on all controls and elements on screen.
The RF Generic plug-in help system is also available in PDF format located in the program’s installation folder and also available on the Tektronix web site.
specific to the plug-in.
This is available on the Tektronix web site.
information on all controls and elements on screen.
The SourceXpress help system is also available in PDF format, available on the Tektronix web site.
commands.
This document is available in PDF format located in the program’s installation folder and also available on the Tektronix web site.
For operation and interface help of a connected instrument, refer to the instrument’s documentation.
This is available with the instrument or on the Tektronix web site.
).
Connected instrument programmer commands (such as an AWG70000 series generator)
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Support information
Tektronix offers the following services in support of their products:
Technical Support. For application-related questions about a Tektronix product, contact us by
telephone or email ).
Service Support. For service-related questions about a Tektronix product, contact us by telephone
or email ).
Tektronix also offers extended warranty and calibration programs as options on many products. Contact your local Tektronix distributor or sales office.
For programming information of a connected instrument, refer to the instrument’s documentation. This is available with the instrument or on the Tektronix web site.
RF Generic Signal Printable Help Document 3
Introduction Support information
4 RF Generic Signal Printable Help Document
Orientation Elements of the display
Elements of the display
The main areas of the application window are shown in the following figure.
Plug-in selection
Use the Plug-in pull-down menu to select the RF Generic Signal plug-in application. The plug-in pull-down menu varies depending the installed applications.
E. RF Generic Signal requires a license to create waveforms.
NOT
Refer to Licensing
RF Generic Signal Printable Help Document 5
(see page 51).
Orientation Signal Format selection
Signal Format selection
The RF Generic Signal plug-in provides the capability to create digitally modulated signals in either RF/IF format or IQ format.
With RF/IF selected, a single waveform is created. With IQ selected, two waveforms are created, one for I and one for Q.
Use the Signal Format pull-down list to select.
Compile button
Use the Compile button to create the waveforms and place the waveforms into the Waveforms list of the
pplication.
host a
Use the Compile settings button to edit the compilation settings.
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Orientation Compile button
Compile settings
Item Description
Name
Overwrite e xisting waveform
The application provides a base name for compiled waveforms. You can edit the field with a name of your choice. The waveform is added to the Waveforms list. If the name already exists, the name is incremented with a numerical value (unless the overwrite option is selected).
RF waveforms are appended with _RF. IQ waveforms are appended with _I and _Q.
The Reset Plug-in button resets the Name field to the default name.
If checked, a waveform with the same name (in the waveforms list) is overwritten with no warnings.
RF Generic Signal Printable Help Document 7
Orientation Compile button
Item Description
Compile for Signal Format = RF/IF
Choose the cha also used to define the amplitude ranges.
The available channels is dependent on the generator model.
Signal Forma
When compiling IQ signals, you are presented with two channel selections.
The first channel selection is I, the second selection is Q.
If the generator has IQ modulator capabilities (digital up converter) and the IQ modulator is enabled, a single channel selection is presented and a complex IQ waveform is created.
nnel to associate with the compiled w aveform. The selected channel is
t=IQ
Compile only The compiled waveforms are simply entered into the Waveforms list.
Compile and assign The compiled waveforms are entered into the Waveforms list and automatically assigned
to a selected channel.
Play after assign If checked, the waveform starts to play out immediately after compiling.
The instrument’s sample rate and amplitude will change based on the compiled waveform’s properties.
Use Internal IQ Modulator If checked, a complex IQ Waveform is created which can be used with the internal
IQ modulator. Sampling Rate and interpolation rates will be calculated based on the Baseband parameters.
This setting is not shown if the generator does not have an internal IQ modulator.
Sampling Rate
Auto calculate
Manual
Oversampling Select to increase the apparent sampling rate.
This is the default method to set the sampling rate. The application creates a sampling rate based on the settings chosen for the waveform.
Select to enter a specific sampling rate.
The Sampling Rate is calculated by multiplying Oversampling with the maximum frequency of the signal to be generated.
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Orientation Compile button
Item Description
Auto calculate waveform length
Waveform length Directly enter the waveform length of the compiled waveform. The length can be defined
Set Marker Data Select to include markers in the compiled waveform.
or wrap-around
Adjust f
Fit to full dynamic range When checked, the waveform is normalized to make use of the full dynamic range of the
Corrections File
Apply
RF/IF Signal Format With the signal format set to RF/IF, the correction file dialog lets you select a single
When checked, the waveform length is calculated based on all settings chosen for the waveform.
Uncheck to enter the waveform length manually.
as:
Samples
Symbols
Time
Symbols can Custom Modulation.
Marker can be set to:
Symbol Rat
Bit Rate
Clock Frequency (when selected, enter the clock frequency from 1 Hz to the m aximum sampling
When a wa important to take care of the phase continuity between the start and end of the waveform. Discontinuity in the waveform produces frequency spurs.
The appl properties to make the phase continuous at the end and beginning of the waveform.
DAC. You might not get the set amplitude in cases w here the set amplitude requires the wavef
Check
The correction file dialog changes depending on the Signal Format, RF/IF or IQ.
correction file to apply.
be defined only if the first Carrier Type is set to Digitally Modulation or
e
rate)
veform is in continuous play mode, it repeats when the end is reached. It is
ication might adjust the Sampling Rate, waveform length, and other waveform
ormtobescaled.
the box to apply a correction file directly to the waveform when compiling.
Use the browse folder icon to navigate to a saved correction file.
Onceavalidfile path is entered, the Correction Settings icon display the Frequency Response screen.
is enabled. Select to
RF Generic Signal Printable Help Document 9
Orientation Compile button
Item Description
IQ Signal Format With the signal format set to IQ, the correction file dialog allows you to apply a correction
file to the IQ wa
When applying an IQ correction file, the correction file dialog lets you select a single correction
When applying an I and Q correction files, the correction file dialog lets you select individual correction files to apply.
veform or to the individual I and Q components of the waveform.
file to apply.
Use the b
rowse folder icon
Onceavalidfile path is entered, the Correction Settings icon
to navigate to a saved correction file.
is enabled. Select to
display the Frequency Response screen.
Compile Compiles the waveform.
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Correction file frequency response
If applying an RF correction file, the Frequency Response screen shows plot information and provides Advanced options to apply a Gaussian filter or remove Sin(x)/x distortions.
10 RF Generic Signal Printable Help Document
Orientation Compile button
If applying an I/Q correction fi le (to a pair of I and Q waveforms), the Frequency Response screen shows plot information and provides Advanced options to apply a skew.
RF Generic Signal Printable Help Document 11
Orientation Reset Plug-in button
Reset Plug-in button
Returns all plug-in settings to their d efault values.
Help button
Help button: Provides links where you can obtain additional product help and documentation.
Item Description
User manual
About ...
xxx
Opens the plug-in help system.
Provides you with information about your plug-in application. This information is helpful when contacting Tektronix about your application.
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