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Rohde & Schwarz FSWP26 User Manual

Rohde & Schwarz FSWP26
167 pages
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R&S
®
FSWP
I/Q Analyzer and Spectrum Monitor
User Manual
User Manual
Version 07
1177585602
(;ÛÈÆ2)

Table of Contents

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Rohde & Schwarz FSWP26 Specifications

General IconGeneral
Frequency Range2 Hz to 26.5 GHz
Resolution Bandwidth1 Hz to 10 MHz
Analysis BandwidthUp to 2 GHz
Input Power Range-30 dBm to +30 dBm
Amplitude Accuracy± 0.19 dB
InterfaceLAN, USB, GPIB
Displaytouchscreen
WeightApprox. 30 kg

Summary

1 Preface

1.1 About this Manual

Provides information specific to the I/Q Analyzer application and I/Q data processing.

Basics on I/Q Data Acquisition

Background on terms and principles for I/Q data acquisition.

Configuration and Analysis

Functions and settings for import, capture, and analysis of I/Q data.

How to Work with I/Q Data

Basic procedure for performing I/Q Analyzer measurements or capturing data.

Optimizing and Troubleshooting the Measurement

Hints and tips for handling errors and optimizing test setup.

Remote Commands to perform Measurements with I/Q Data

Remote commands for configuring and performing I/Q Analyzer measurements.

2 Welcome to the I/Q Analyzer Application

2.1 Starting the I/Q Analyzer Application

Step-by-step instructions on how to activate the I/Q Analyzer application.

2.2 Understanding the Display Information

Explains the different labeled areas of the I/Q Analyzer application's measurement diagram.

Channel bar information

Details the settings displayed in the channel bar for the I/Q Analyzer application.

3 Measurement and Result Displays

Measurements in the time and frequency domain

Discusses time and frequency domain measurements using I/Q Analyzer.

4 Basics on I/Q Data Acquisition and Processing

4.1 Processing Analog I/Q Data from RF Input

Explains processing analog I/Q data from the RF input.

4.2 Basics on Input from I/Q Data Files

Details how to input I/Q data from files.

4.3 Receiving and Providing Trigger Signals

Explains receiving and providing trigger signals.

4.4 I/Q Data Import and Export

Describes importing and exporting I/Q data.

4.5 Basics on FFT

Explains the basics of Fast Fourier Transformation.

4.6 I/Q Analyzer in MSRA Operating Mode

Discusses using the I/Q Analyzer in MSRA operating mode.

4.7 Measurements in the Time and Frequency Domain

Covers measurements in time and frequency domains.

4.1 Processing Analog I/Q Data from RF Input

Complex baseband data

Explains complex baseband data and I/Q components.

I/Q Analyzer - processing complex data from RF input

Describes how the I/Q Analyzer processes complex data from RF input.

4.1.1 Sample Rate and Maximum Usable I/Q Bandwidth for RF Input

Bandwidth extension options

Explains how to extend usable I/Q bandwidth with options.

4.1.1.1 Bandwidth Extension Options

Lists bandwidth extension options and their required B-options.

4.1.1.2 Relationship Between Sample Rate, Record Length and Usable I/Q Bandwidth

4.2 Basics on Input from I/Q Data Files

4.3 Receiving and Providing Trigger Signals

External trigger as input

Details using an external device as a trigger source.

Trigger output

Explains how the R&S FSWP provides trigger output signals.

4.4 I/Q Data Import and Export

4.5 Basics on FFT

4.5.1 Window Functions

Explains windowing in Fourier transformation and its purpose.

4.5.2 Overlapping

4.5.3 Dependencies Between FFT Parameters

4.5.4 Frequency Resolution of FFT Results - RBW

RBW mode

Explains automatic and manual RBW modes.

4.5.5 FFT Calculation Methods

4.6 I/Q Analyzer in MSRA Operating Mode

4.7 Measurements in the Time and Frequency Domain

5 Configuration

Importing and Exporting I/Q Data

Covers importing and exporting I/Q data for analysis.

5.1 Configuration Overview

Provides an overview of important currently defined settings in the 'Overview'.

5.1 Configuration Overview

1. Configuring the input

Configures the input settings for the I/Q Analyzer.

2. Configuring level characteristics

Configures level characteristics affecting signal amplitude.

3. Configuring Frequency Characteristics

Configures frequency characteristics of the input signal.

4. Configuring triggered and gated measurements

Configures triggered and gated measurements.

6. Configuring the bandwidth

Configures bandwidth settings for data acquisition.

5.2 Import/Export Functions

5.3 Configuring Data Inputs and Outputs

5.3.1 Inputs

Lists the supported input sources for the I/Q Analyzer.

5.3.1.1 RF Input

Configures the RF input source for signals.

Input Coupling

Impedance

5.3.1.6 Settings for Input from I/Q Data Files

5.3.2 Outputs

5.4 Configuring the Amplitude

5.4.1 Configuring Level Characteristics

Configures reference level and related settings.

Reference Level

Shifting the Display ( Offset )

Defines an arithmetic level offset added to the measured level.

Setting the Reference Level Automatically ( Auto Level )

Automatically determines a reference level for optimal signal-to-noise ratio.

Attenuation Mode / Value

Optimization

Preamplifier

Noise Cancellation

5.4.2 Scaling the Y-Axis

5.5 Configuring Frequency Characteristics

Center Frequency

Defines the center frequency of the signal in Hertz.

5.6 Configuring Triggered Measurements

Trigger Source

Selects the trigger source for measurements.

Ext. Trigger 1/2

IF Power

I/Q Power

RF Power

5.7 Data Acquisition and Bandwidth Settings

5.7.1 Data Acquisition

Defines parts of the input signal captured for further evaluation.

Sample Rate

Analysis Bandwidth

Maximum Bandwidth

Record Length

Swap I/Q

RBW

Transformation Algorithm

FFT Length

5.7.2 Sweep Settings

Single Sweep / Run Single

5.8 Display Configuration

5.9 Adjusting Settings Automatically

Adjusting all Determinable Settings Automatically ( Auto All )

Activates all automatic adjustment functions for current measurement settings.

Adjusting the Center Frequency Automatically ( Auto Frequency )

Setting the Reference Level Automatically ( Auto Level )

6 Analysis

6.2 Marker Settings

7 How to Work with I/Q Data

7.1 How to Perform Measurements in the I/Q Analyzer Application

Demonstrates capturing I/Q data and analyzing it in the I/Q Analyzer.

7.1.1 How to Capture Baseband (I/Q) Data as RF Input

Step-by-step guide to capture baseband I/Q data from RF input.

7.1.2 How to Analyze Data in the I/Q Analyzer

7.2 How to Export and Import I/Q Data

8 Remote Commands for the I/Q Analyzer

8.3 Activating I/Q Analyzer Measurements

INSTrument:CREate[:NEW]

Adds an additional measurement channel, configurable up to 10 channels.

INSTrument[:SELect]

Activates a new channel or selects an existing channel.

TRACe:IQ:EVAL

Turns I/Q data analysis on and off.

TRACe:IQ[:STATe]

Changes current channel application to I/Q Analyzer, activating simple data acquisition.

8.4 Performing Measurements

ABORt

Aborts the current measurement and resets the trigger system.

8.5 Retrieving Results

8.5.1 Retrieving Captured I/Q Data

Retrieves captured I/Q data in a list, with three different formats.

TRACe:IQ:DATA

TRACe:IQ:DATA:FORMat

TRACe:IQ:DATA:MEMory?

8.5.2 Retrieving I/Q Trace Data

TRACe<n>[:DATA]? <ResultType>

TRACe<n>[:DATA]:MEMory? <Trace>,<OffsSwPoint>,<NoOfSwPoints>

TRACe<n>[:DATA]:X? <TraceNumber>

8.5.3 Retrieving Marker and Peak Search Results

CALCulate<n>:DELTamarker<m>:X <Position>

CALCulate<n>:DELTamarker<m>:Y

CALCulate<n>:MARKer<m>:X <Position>

CALCulate<n>:MARKer<m>:Y

8.6 Configuring I/Q Analyzer Measurements

Configuring Input Sources

Configures the various input sources for I/Q Analyzer.

INPut<ip>:FILE:PATH

Selects the I/Q data file to be used as input for measurements.

INPut<ip>:IMPedance

INPut<ip>:SELect

8.6.2 Configuring Outputs

8.6.3 Configuring Level Characteristics

CALCulate<n>:UNIT:POWer

DISPlay[:WINDow<n>]:TRACe<t>:Y[:SCALe]:RLEVel

DISPlay[:WINDow<n>]:TRACe<t>:Y[:SCALe]:RLEVel:OFFSet

[SENSe:]POWer:NCORrection

8.6.4 Configuring the Attenuator

INPut<ip>:ATTenuation

Defines the total attenuation for RF input.

INPut<ip>:ATTenuation:AUTO

INPut<ip>:ATTenuation:AUTO:MODE

8.6.5 Configuring the Preamplifier

INPut<ip>:GAIN:STATe

Turns the internal preamplifier on and off.

INPut<ip>:GAIN[:VALue]

8.6.6 Scaling the Y-Axis

DISPlay[:WINDow<n>]:TRACe<t>:Y[:SCALe]:RPOSition

8.6.7 Configuring the Frequency

[SENSe:]FREQuency:CENTer

Defines the center frequency.

8.6.8 Configuring Trigger

TRIGger<tp>[:SEQuence]:LEVel[:EXTernal<port>]

TRIGger[:SEQuence]:LEVel:IFPower

TRIGger[:SEQuence]:LEVel:IQPower

TRIGger[:SEQuence]:LEVel:RFPower

TRIGger[:SEQuence]:SOURce

8.6.9 Configuring Trigger Output

8.6.10 Configuring Gated Measurements

8.6.11 Configuring Data Acquisition

[SENSe:]IQ:FFT:ALGorithm

[SENSe:]IQ:FFT:LENGth

[SENSe:]SWAPiq

TRACe:IQ:BWIDth

TRACe:IQ:RLENgth

TRACe:IQ:SET

TRACe:IQ:SRATe

TRACe:IQ:TPISample?

TRACe:IQ:WBANd:MBWidth

8.6.12 Automatic Configuration

[SENSe:]ADJust:ALL

Initiates measurement to determine and set ideal settings automatically.

[SENSe:]ADJust:FREQuency

[SENSe:]ADJust:LEVel

8.6.13 Configuring the Result Display

CALCulate<n>:MARKer<m>:SEARch

8.8 Importing and Exporting I/Q Data

8.10 Programming Examples

8.10.1 I/Q Analysis with Graphical Evaluation

Demonstrates configuring and performing basic I/Q data acquisition and analysis.

8.10.2 Basic I/Q Analysis with Improved Performance

A Annex: Reference

A.3 I/Q Data File Format (iq-tar)

Details the .iq.tar file format for packing I/Q data and meta information.

A.3.1 I/Q Parameter XML File Specification

A.3.2 I/Q Data Binary File

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