It’s Time To Get Real.
Your Guide to Selecting the Right Real-Time Spectrum Analyzer
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Complex RF Problems
Require a New Type of Analysis
Today’s RF signals change over time, often unpredictably. To effectively characterize these signals, you need a
tool that can discover and trigger on both known and unpredictable events, capture the signals seamlessly
into memory, and analyze the behavior of frequency, amplitude, and modulation parameters over time. Using
traditional tools like swept spectrum analyzers and vector signal analyzers might provide snapshots of the signal
in the frequency and modulation domains, but this is often not enough information to confidently describe the
dynamic RF signals produced by the device under test. By providing insight into how parameters change over
continuous time, the Real-Time Spectrum Analyzer adds another crucial dimension to all of these measurements.
RSA3300A Series
With a single acquisition, the RSA3300A Series
captures a continuous time record of changing
RF events and enable time-correlated analysis
in the frequency, time and modulation domains.
Select Your Real-Time Spectrum Analyzer Performance
RTSA
Model Series
Frequency
Range
Memory
Depth
Modulation
Analysis
Real-Time Capture
Bandwidth
Triggering
Modes
RSA3303A
RSA3308A
RSA3408A
RSA6106A
RSA6114A
DC-3 GHz
DC-8 GHz
64 MB,
256 MB optional
AM, FM
(ASK, FSK), PM,
Pulse Analysis;
optional general purpose
digital mod analysis
15 MHz
15 MHz
36 MHz
IF Level,
Power and
Opt. Frequency
Mask Trigger
64 MB,
256 MB optional
AM, FM
(ASK, FSK), PM,
Pulse Analysis;
optional general purpose
digital mod analysis
IF Level,
Power and
Opt. Frequency
Mask Trigger
RSA3408A Series
Get fast resolution to complex problems with
enhanced triggering, more capture bandwidth
and great analysis tools with the RSA3408A.
DC-8 GHz
64 MB,
256 MB optional
AM, FM
(ASK, FSK), PM,
Pulse Analysis;
optional general purpose
digital mod analysis
Power and
Opt. Frequency
Mask Trigger
9 kHz - 6.2 GHz
256 MB,
1 GB optional
Amplitude, Frequency,
Phase vs Time and
Advance Signal (Pulse)Analysis
optional general purpose
digital mod analysis
40 MHz
110 MHz optional
Power and
Opt. Frequency
Mask Trigger
RSA6100A Series
9 kHz - 14 GHz
256 MB,
1 GB optional
Amplitude, Frequency,
Phase vs Time and
Advance Signal (Pulse)Analysis
optional general purpose
digital mod analysis
40 MHz
110 MHz optional
Power and
Opt. Frequency
Mask Trigger
The RSA6100A Series offers the revolutionary
DPX® spectrum display with an intuitive live
color view of signal transients changing over
time in the frequency domain, giving you
immediate confidence in the stability of your
design, or instantly displaying a fault when
it occurs.
RSA Real-Time Spectrum Analyzers
3
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It’s Time to Get Real.
Completely Characterize Time-varying RF Signals
Multiple correlated views
Two frequency ranges:
in all domains (Frequency, Time,
Amplitude, Phase, Modulation)
with intuitive user interface.
9 kHz to 6.2 GHz (RSA6106A) or
9 kHz to 14 GHz (RSA6114A).
Revolutionary DPX® spectrum
processing for unmatched
troubleshooting and live transient
analysis.
DVD RW (standard) for waveform
storage. Removable HDD (optional)
for data security.
Touch screen, mouse and front
panel controls directly adjust settings
in the views.
Familiar spectrum analyzer
controls plus fast access to all
acquisition and measurement
settings.
Windows XP Operating System
with Tek OpenChoice® for easy file
operations, printing, Ethernet and
GPIB control, remote connections
and more.
USB connections (2 front, 2 rear),
for mouse, keyboard and memory.
Two external triggers to capture
key event information (1 front, 1 rear).
DC-Protected Input
40 V DC, over entire frequency
range, +30 dBm CW, 75W Pulse
Maximum.
RSA Real-Time Spectrum Analyzers
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Discover
®
Easily
Problems Using the Revolutionary DPX Spectrum Display
Detection is the first step in understanding and resolving any problem relating to time-variant signals. As new
applications utilize wireless transmission, new channels crowd into available bandwidth, and RF systems become
digital-based, engineers need better tools to help them find and interpret complex behaviors and interactions.
Tektronix’ patented Digital Phosphor technology, standard in our RSA6100A Series Real-Time Spectrum Analyzers,
reveals signal details that are completely missed by conventional spectrum analyzers and vector signal analyzers.
The DPX® Spectrum’s live RF display shows signals never seen before, giving users instant insight and greatly
accelerating discovery and diagnosis.
Performing >48,000 frequency
transforms per second, transients as
brief as 24 µs in length are displayed
in the frequency domain. This is a
1000-fold improvement over swept
analysis techniques. Events can be
color coded by rate of occurrence
onto a bitmapped display, providing
unparalleled insight into transient
signal behavior.
Revolutionary DPX spectrum display
reveals transient signal behavior that
helps you discover instability, glitches
and interference.
Infrequently occurring transient is seen
in detail. The frequency of occurrence is
color-graded, indicating the infrequent
transient event in blue and the noise
background in red.
DPX Spectrum display after
5 seconds. Bitmap color mapping
is “Spectral”, to emphasize
infrequent signals with hot colors.
MaxHold trace is indicated in yellow.
RSA Real-Time Spectrum Analyzers
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Trigger
the Only Spectrum Analyzers with Frequency Domain Triggering
Real-Time Spectrum Analyzers overcome the challenges associated with today’s complex RF signals with both
frequency and time domain event triggers. These advanced triggers provide the ability to capture a seamless
record of RF signals into memory and perform time-correlated, multi-domain analysis.
Unlike traditional swept spectrum analyzers, the Real-Time Spectrum Analyzer offers a Power Trigger with
user-settable span, enabling spectrum capture whenever the power of any signal crosses a user-defined
threshold. Tektronix’ exclusive Frequency Mask Trigger enables the capture of the spectrum of interest when
a discrete change in signal frequency, amplitude, or bandwidth occurs, or when a signal appears or disappears.
Frequency Mask Triggering occurs even if spectral events are detected at a much lower level than adjacent
signals. In addition, the flexibility of the Frequency Mask Trigger enables the creation of a customizable mask
that can monitor multiple different frequency bands within the analysis span.
Frequency Mask Trigger can
catch unknown, transient
or low duty cycle signals in
a multi-signal spectrum
Using the Frequency Mask Trigger and
Spectrogram to determine if interference with
specific WLAN packets is coming from a
Bluetooth transimitter or a microwave oven.
Point-click-and-drag editor
makes mask set-up easy
Trigger can be used in an
exceed threshold or “fall under”
threshold mode
Trigger position can be set to
designate what percentage of
the captured time record will
be pre-trigger and post-trigger
RSA Real-Time Spectrum Analyzers
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Capture
Continously
a Seamless Time Record of a Span of RF Frequencies
As the complexity of new RF components, devices and systems continues to increase, the ability to acquire and
store a record of time-variant RF signal activity and thoroughly analyze its unique behavior – over time, in multiple
domains – is becoming increasingly essential. Tektronix’ Real-Time Spectrum Analyzers meet these requirements
by seamlessly capturing and recording all the signals across a user-selected span – up to 110 MHz, depending
upon model used. Transient, pulsed and other time-variant signals are all captured as a seamless time record into
deep memory. Some models also include an option for streaming live IQ data to an output for external recording
and analysis.
User adjustable color scaling shows signal
amplitude transitions
Spectrogram showing oscillator
turn-on settling characteristic enables
measurement frequency variance
over time
Marker/delta markers provide signal amplitude,
frequency, frame number and time
Spectrogram showing a pulsed AM signal...
measure spectral occupancy and amplitude,
timing between pulses. Also measure transient
signals at carrier turn-on time
Trigger/pre-trigger time designation
Readouts show first and last spectra
(frame) displayed, with color scaling
that indicates amplitude
Frequency
RSA Real-Time Spectrum Analyzers 11
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Analyze
Complex RF Signals Completely
The analysis capabilities of the Real-Time Spectrum Analyzer provide simultaneous time-correlated views of a signal
in the frequency, time and modulation domains, enabling much faster resolution of complex problems that often
occur in today’s RF systems.
View Multiple Domains At Your Convenience
Overview window: power vs. time
By acquiring a record of real-time signal behavior, the Real-Time Spectrum Analyzer supports numerous powerful
analysis tools. One example is the spectrogram display, which plots frequency and amplitude changes over time.
It provides an intuitive, three-dimensional display of the time-varying signal behavior, not seen in traditional frequency
domain plots. This view makes it easy to see phenomena such as modulation switching, signal hand-offs, frequency
hops and settling time between pulses, and changes in frequency over time.
Sub-view window: choice of frequency vs.
amplitude, constellation, EVM, many other
displays
In addition to providing time-correlated multi-domain analysis on a wide variety of signals, certain Tektronix Real-Time
Spectrum Analyzers support the latest mobile and wireless data standards, as well as providing a general purpose
digital modulation analysis on a wide variety of formats. With time-correlated views across the frequency, time and
modulation domains and a full range of analysis capabilities, you gain unprecedented insight into RF signal behavior
for complete characterization and quick problem-solving.
Color-keyed lines show timing of Main View
analysis and Sub-View spectrum analysis and
trigger time
Measurements are time-correlated
Time-correlated views relate EVM,
symbol value or constellation with
frequency vs. power or spectrogram
representation of a digital signal
Settings for modulation
parameters, such as
symbol rate, measurement
filter and alpha/BW
product
Main view window: time vs. amplitude,
time vs. frequency, time vs. phase,
many other views
Views for EVM vs. time,
eye diagram, constellation
(with and without transitions),
IQ amplitude (or frequency
for GFSK) vs. time
Automated measurements for EVM,
Magnitude Error, Phase Error, plus symbol
Modulation analysis for:
number where each measurement peaks
BPSK; QPSK; 16, 32, 64,
256 QAM; 8PSK; π/4 DQPSK;
GMSK; GFSK and more
RSA Real-Time Spectrum Analyzers 13
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Application
Solutions for Your Digital RF Challenges
Example Applications Benefiting from Key Standard Capabilities and Options
Analysis Feature
Applications
Product Series
General Signal
Analysis
RFCommunication
Systems
Spectrum
Management
Radar & Pulsed
SDR and
Cognitive Radio
Signals
WiMAX
WLAN
RFID
Cellular
RSA6100A
standard
RSA3408A
RSA3300A
DPX® Spectrum Processing
Multi-Domain Correlation
Hi-res Spectrogram
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
standard
standard
standard
standard
standard
standard
Internal Preamplifier
optional
External Preamplifier
optional
optional
110 MHz Capture Bandwidth
40 MHz Capture Bandwidth
36 MHz Capture Bandwidth
15 MHz Capture Bandwidth
Power Trigger
X
X
X
X
X
X
X
X
X
optional
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
standard
X
X
X
X
X
X
X
X
X
standard
X
standard
optional
optional
optional
X
X
X
X
X
X
X
X
X
X
X
standard
optional
optional
optional
optional
optional
optional
optional
optional
optional
optional
standard
optional
optional
Frequency Mask Trigger
General Purpose Modulation Analysis
Removable HDD
X
X
X
X
Digital IQ Output
X
X
X
X
X
X
Analog IF Output
X
X
Differential Analog IQ Input
Pulsed RF Analysis
X
optional
optional
X
X
X
X
X
X
X
Advanced Analysis Pulsed Signal Suite
AM/AM, AM/PM, 1 dB Compression
Cellular Standards Analysis
802.11a/b/g/n Analysis
RFID Analysis
optional
optional
X
X
X
X
X
X
X
optional
optional
optional
optional
optional
optional
optional
X
X
X
X
optional
optional
WiMAX Analysis
X
optional
RSA Real-Time Spectrum Analyzers 15
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