Tektronix RSA5103A, RSA5106A, RSA6106B, RSA6114B, RSA6120B User manual

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RSA6100B Series Real-Time Signal Analyzers
RSA5100A Series Real-Time Signal Analyzers
Application Examples

ZZZ

Reference

*P071283401*

071-2834-01

xx

RSA6100B Series Real-Time Signal Analyzers
RSA5100A Series Real-Time Signal Analyzers
Application Examples

ZZZ

Reference

www.tektronix.com

071-2834-01

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Table of Contents

Preface ................................................................................................................................. ii

Application

Application 2: Measuring Channel Power and Adjacent Channel Power . . ... . ... . ... . ... . ... . ... . ... . . ... . ... . ... . ... . ... . ... . ... . 5

Application 3: Performing M odulation A nalysis . ... . ... . .. . . .. . ... . ... . ... . .. . . .. . ... . ... . ... . .. . ... . ... . ... . ... . .. . . .. . ... . ... . .. . . . 9

Applicatio

Application 5: Capturing Transient Signals . ... . ... . ... . ... . ... . ... . ... . ... . ... . ... . ... . ... . ... . ... . ... . ... . .. . . ... . .. . . .. . . .. . . .. . ..24

Application 6: Taking Pulse Measurements ......................................................................................... 34

1: Making a Basic Spectrum Measurement ... . . .. . . .. . . ... . ... . ... . ... . ... . ... . ... . ... . . .. . . .. . . .. . . ... . ... . ... . ... . ... 1

n 4: Performing Time and Frequency Analysis . . .. . . .. . . .. . . .. . . .. . . .. . ... . . .. . . .. . ... . . .. . ... . ... . . .. . ... . ... . ... . ... . .. 16

Table of Content

s

RSA6100B S eries & RSA5100A Series Application Examples Reference i

Preface

Preface

This manual provides tutorial examples of how to use the RSA6100B Series Real-Time Signal Analyzers and RSA5100A
Series Real-Time Signal Analyzers to take measurements in different application areas. To work through these examples on
your instrument, you can use either the sample data files provided on your hard drive or a live signal of your choice. If you
use your own signal, you need to reset the instrument to match your signal's parameters.

NOTE. You can use the mouse, keyboard, and touch screen to perform all of the tasks in this manual. Additionally, you can

use the knob and buttons on the analyzer front panel as shortcuts to perform some of the tasks.

ii RSA6100B Series & RSA5100A Series Application Examples Reference

Application 1: M

aking a Basic Spectrum Measurement

Application 1

You can operate y our analyzer like a conventional spectrum analyzer. The following example leads you through basic
functions of frequency, span, and shows y ou how to make amplitude and frequency measurements with markers.

1. Push the front-panel Preset button to set
the instrument to the default settings.

The following steps set up the appropriate
measurement parameters for the sample
signal.

2. Click Fre
and type in 2GHz.

2 GHz is the frequency of the saved
signal t
Enter the value with the front-panel
keypad or an external keyboard attached
throug

q in the application menu bar

hat you will recall in a l ater step.

h the USB port.

: Making a Basic Spectrum Measurement

3. Click t

4. Set the span to 1MHzin the resulting

5. Select File > Recall.

he Settings icon in the application

menu bar.

Spectrum Settings lower screen pane.

To locate the Span screen item, be sure
the Freq & Span tab is selected.

The file that you will recall is a saved
data file. It mimics a live signal for the
purpose of this example application.

RSA6100B S eries & RSA5100A Series Application Examples Reference 1

Application 1: M

6. Go to: C:/RSA6100B Files/Sam­pleDataRecords or C:/RSA5100A
Files/Sample

Select Acq data with setup (TIQ) in the
drop-down list field.

Select FMDem
field.

Click Open.

NOTE. You can use a live signal of your own

choice instead of the sample data file and
reset the instrument to match your signal's
parameters.

7. Select Data only in the Recall
Acquisition Data dialog box and click
OK.

If you had previously stored both
instrument setups and your data, you
could recall both items now by selecting
Data and setup.

aking a Basic Spectrum Measurement

DataRecords.

o.tiq in the File name

You should see the sample waveform on
the screen.

NOTE. Markers can help you measure

values like time, frequency, and power.

2 RSA6100B Series & RSA5100A Series Application Examples Reference

8. Click the Marker icon in the application

bar to display the marker tool bar at the
bottom of the s

Do this with a mouse, by pressing
the screen with a finger, or push the
front-panel

creen.

Markers P eak button.

Application 1: M

aking a Basic Spectrum Measurement

9. Click Peak i

at the bottom of the display.

The instrument places a m arker on the
highest level peak of the spectrum. It
displays the marker measurement in the
upper left of the display.

The first marker is labeled MR to indicate
that it is the reference marker.

10. Click M arkers Define in the bottom left

of the display.

This brings up the Define Markers
control

11. Click Ad

A diamond shape labeled M1 appears o n
top of the MR marker and at the center
freque

The four delta markers, M1, M2, M3, and
M4, measure amplitude and frequency
refer

You can also assign markers to specific
traces and adjust peak threshold.

n the resulting marker toolbar

panel.

d.

ncy. This is a delta marker.

enced to MR.

12. Use your finger or the mouse to slide the

marker over to the next signal.

Alternatively, you can do the same task
with the knob or arrow key on the front
panel. Do this by assigning the control
to the marker by touching the marker
toolbar at the bottom of the screen.

RSA6100B S eries & RSA5100A Series Application Examples Reference 3

Application 1: M

aking a Basic Spectrum Measurement

The marker read
shows the frequency and amplitude
differences between the reference
marker MR and t

The readout to the upper left shows the
absolute value of the M1 marker.

So far, you used m arkers to measure two
points of the same trace.

You can also use markers to measure further
differences between points. You can do this
by using the up, down, left, and right arrow
keys. You can also drag markers with the
mouse.

Alternatively, you can move markers by
rotating the front-panel knob or pressing the
front-panel arrow keys.

out at the upper right

he M1 delta marker.

4 RSA6100B Series & RSA5100A Series Application Examples Reference

Application 2: M

easuring Channel Power and Adjacent Channel Power

Application 2

: Measuring Channel Power and Adjacent

Channel Power

The RSA6100B and RSA5100A analyzers can take channel power, adjacent channel power, and multi-carrier channel
power measurements. This application demonstrates the settings used for taking channel power and adjacent channel
power measurements.

1. Push the front-panel Preset button to set

the instrument to the default settings.

Set up the appropriate measurement
parameters for the sample signal.

2. Ensure that Freq is set to 1.5 GHz.

3. Click the Displays icon in the application

bar. Doing this will let you open the
Channel Power and ACPR display.

Alternatively, push the front-panel

Displays button.

4. Select the RF Measurements folder.

RSA6100B S eries & RSA5100A Series Application Examples Reference 5

Application 2: M

easuring Channel Power and Adjacent Channel Power

5. Double click or
drop, the Channel Power and A CPR
icon in the Available displays area to
move it to the S

6. Double click, or drag and drop, the
Spectrum i
Selected displays area.

7. Click OK

, alternatively, drag and

elected displays area.

contoremoveitfromthe

.

8. Click the Settings icon in the application
bar.

9. Click the Measurement Params tab.

For the purpose of this application
example, with its recalled signal, you can
leave the Average field as Off.

If you were using a live signal and wanted
to use averaging, you want to select
Frequency Domain in the Average
field. That is a common s etting.

Leave Correct for Noise Floor
unchecked.

6 RSA6100B Series & RSA5100A Series Application Examples Reference

10. Set Filter Parameter to 0.35.

11. Set Chip Rate to 1MHz.

Chip rate is signal bandwidth.

12. Click the Channels Tab. Use this to

define the channels to measure.

13. Ensure that the Number of adjacent

pairs is already set to 1. This will set the

instrument to measure the main channel
and the one adjacent channel on each
side of it.

14. Set Channel B andwidth to 1MHz.

15. Set Channel Spacing to 2MHz.

Application 2: M

easuring Channel Power and Adjacent Channel Power

16. Select File > Recall

Do this to load the saved acquisition file.

17. Go to: C:/RSA6100B Files/Sam-

pleDataRecords or C:/RSA5100A
Files/SampleDataRecords.

Select Acq data with setup (TIQ) as the
type of file to look for.

Select ACPRDemo.tiq as the file to
recall.

Click Open.

RSA6100B S eries & RSA5100A Series Application Examples Reference 7

Application 2: M

18. Select Data only and click OK.

Do not select Data and setup because
that would loa
saved along with the recalled file. That
would overwrite the settings you made
in the previo
example.

19. View the results.

The absolu
appears in the middle of the graph. The
upper adjacent power ratio appears to
the right,
ratio appears to the left.

The gray-shaded bands illustrate the
space bet
makes ACPR power measurements
within the defined channels, represented
by the uns

easuring Channel Power and Adjacent Channel Power

d control values that were

us steps of this application

te channel power value

and the lower adjacent power

ween channels. The analyzer

haded black areas.

8 RSA6100B Series & RSA5100A Series Application Examples Reference

Application 3: P

erforming Modulation Analysis

Application 3

The following example shows how to use your analyzer, with Option 21 installed, to demodulate a QPSK signal and to
analyze the signal in multiple domains. You will use the instrument to do the following:

Demodulate a QPSK signal to show its constellation diagram.

Measure the EVM (Error Vector Magnitude) and other key indicators using the Signal Quality display.

View the phase of the signal changing over time.

Use markers to see how the results correlate between the Symbol Table display, Constellation display, and the Phase vs
Time display.

NOTE. The following examples are based on the QPSK sample data file. If desired, you can load the QPSK sample data file

(QPSKDemo.tiq) to recreate the steps used in this application. The signal settings in the following examples are based on
the signal in the sample file. If you use a live signal, your settings may differ.

: Performing Modulation Analysis

RSA6100B S eries & RSA5100A Series Application Examples Reference 9