Tektronix MDO3000 Series User manual

Tektronix MDO3000 Series Oscilloscope
Demonstration Guide

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Table of Contents
Tektronix MDO3000 Series Oscilloscope ...................... 4
About This Guide............................................................ 6
Powering on the Board .................................................. 8
MDO3000 Series Front Panel Overview ........................ 9
Exercise 1: Capturing Elusive Events with FastAcq™
High Waveform Capture Rate ......................................... 10
Exercise 2: Wave Inspector®Navigation and
Automated Search.......................................................... 15
Exercise 3: Decoding, Triggering and Searching
Serial Buses ................................................................... 20
Exercise 4: Acquiring Analog and Digital signals of
a D/A Converter.............................................................. 30
Exercise 5: Using the Integrated Spectrum Analyzer...... 34
Exercise 6: Generating Waveforms with the
Integrated AFG ............................................................... 39
Exercise 7: Measuring Signals with the
Integrated DVM .............................................................. 43
Locating Signals on Demo Board................................ 46
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MDO3000 Series Oscilloscope
Demonstration Guide

Tektronix MDO3000 Series
Oscilloscope
Tektronix MDO3000 Mixed Domain Oscilloscope is the
ultimate integrated 6-in-1 oscilloscope that offers a spectrum
analyzer, arbitrary function generator (AFG), logic analyzer,
protocol analyzer, and digital voltmeter (DVM), enabling you to
quickly and cost effectively debug your designs.
Oscilloscope – At the core of the MDO3000 is the most
popular oscilloscope in this class.
100, 200, 350, 500 MHz and 1 GHz bandwidth models
Up to 5 GS/s sampling rate
10 Mpoint record length on every channel with Wave
Inspector®navigation and search controls
Up to a maximum waveform capture rate of >280,000
waveforms per second
More than 125 trigger combinations
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MDO3000 Series Oscilloscope
Demonstration Guide

Spectrum Analyzer – Every MDO3000 ships standard with
a dedicated spectrum analyzer input which provides better
performance than a traditional oscilloscope FFT. The standard
integrated spectrum analyzer input frequency is from 9 kHz to
the bandwidth of the scope and is extendable to 3 GHz with
the MDO3SA option.
Arbitrary Function Generator (Optional) – Choose from 13
predefined standard waveforms like sine, square or ramp,
or replicate virtually any signal with the arbitrary waveform
generation with 128k record length and 250MS/s sample rate.
Even add noise to your waveform to perform margin testing
on your circuits.
Logic Analyzer (Optional) – The MDO3000 provides a 16
digital channel logic analyzer with the MDO3MSO option,
enabling you to look at multiple points in your design at once.
Protocol Analyzer (Optional) – The MDO3000 Series offers a
robust set of tools for debugging serial buses with automatic
trigger, decode, and search for I2C, SPI, CAN, LIN, FlexRay,
USB 2.0, RS-232, RS-422, RS-485, UART, USB 2.0, Mil-Std
1553.
Digital Voltmeter (DVM) (Optional) – For fast voltage and
frequency measurements, the optional digital voltmeter
is easy-to-use. The DVM is free when you register your
MDO3000 Series product.
Upgradability – The MDO3000 is completely upgradeable.
Upgrade scope bandwidth and RF input frequency, add
more functionality such as AFG, logic analyzer, and DVM,
or add analysis capability such as serial bus triggering and
decode, power measurement and limit/mask test, whenever
you need it.
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MDO3000 Series Oscilloscope
Demonstration Guide

About This Guide
This demonstration guide takes you through a series of
step-by-step demonstrations on how the MDO3000 Series
oscilloscope helps simplify the debug of mixed signal designs
with its powerful functionality and integrated test instruments.
This oscilloscope can help you discover new ways to quickly
debug some of today’s most challenging and common design
problems.
Note: There are additional built-in product demos in
MDO3000. To explore other product demos and features,
press Utility front panel button, then press MDO3000 Utility
Page lower-bezel button and use Multipurpose a to select
Demo.
To go through the exercises, you need:
MDO demonstration board (includes a USB Y-cable used
to power the demo board) with waveforms that represent
a number of mixed-signal challenges facing today’s
designers. To find the desired signal on the demo board,
refer to the “Locating Signals” section at the end of this
demonstration guide.
BNC cable to connect AFG output to analog channel and
to connect to the spectrum analyzer input.
N-BNC adapter to connect BNC cable to RF input channel
(standard accessory)
Serial bus triggering and analysis application modules
DVM, AFG, Spectrum Analyzer options
Note: For demonstration purpose, all application modules
and options are enabled in MDO3000 demo units. They are
listed on the following page:
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MDO3000 Series Oscilloscope
Demonstration Guide

Category Product Description
Serial Bus
Analysis
MDO3AERO MIL-STD-1553 serial bus triggering and analysis module
MDO3AUDIO Audio serial triggering and analysis module (I2S, LJ, RJ, TDM)
MDO3AUTO Automotive serial triggering and analysis module (CAN, LIN)
MDO3COMP Computer serial triggering and analysis module (RS-232/422/485/UART)
MDO3EMBD Embedded serial triggering and analysis module (I2C, SPI)
MDO3FLEX FlexRay serial triggering and analysis module
MDO3USB USB2.0 (LS, FS) serial bus triggering and analysis and (HS – 1GHz models only)
analysis module
Analysis
MDO3LMT Limit/mask test
MDO3PWR Power measurement and analysis package
Measurement N/A Adds digital voltmeter to any MDO3000, free with product registration
Instrument
Options
MDO3AFG Adds arbitrary function generator to any MDO3000
MDO3MSO Adds 16 digital channels to a MDO3000; includes P6316 digital probe and accessories
MDO3SA Increases input range of spectrum analyzer to 9kHz - 3 GHz
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MDO3000 Series Oscilloscope
Demonstration Guide

Powering on the Board
To connect and power on the
demonstration board, follow these
steps:
1. Plug the dual USB A connectors from
one end of the “Y” USB cable, which
comes with your board, into two USB
ports of a PC or an oscilloscope. Do
this before plugging the single USB B
connector from the other end of the USB
cable into the demonstration board. You
need to attach both USB A connectors
to provide adequate power to the demo
board.
2. Plug the single B connector from the
other end of the USB cable into the demo
board. Two green and one red LEDs on
the board turn on and remain steady
when you apply adequate power to the
board. Figure 1.
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MDO3000 Series Oscilloscope
Demonstration Guide

MDO3000 Series Front
Panel Overview
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MDO3000 Series Oscilloscope
Demonstration Guide

Exercise 1
Capturing Elusive Events with FastAcq™
High Waveform Capture Rate
To debug a design problem, first you must know it exists.
The MDO3000 Series oscilloscope offers Tektronix proprietary
FastAcq™technology. It delivers a fast waveform capture –
up to 280,000 waveforms per second – that enables you to
see glitches and other infrequent transients within seconds,
revealing the true nature of device faults.
To further enhance the visibility of rarely occurring events,
intensity grading is used with multiple waveform palettes
to choose from, indicating how often rare transients are
occurring relative to normal signal characteristics. The
FastAcq waveform palettes are Temperature (color-grading
frequency of occurrence), Spectral (color-grading frequency
of occurrence), Normal (gray-scale where frequently occurring
events are bright) and Inverted (gray-scale where rare events
are bright).
This demo illustrates how FastAcq high waveform capture
rate can find anomalies quickly and display them with color-
grading. The demonstration looks for an erroneous runt signal
that occurs approximately every 838.8ms.
Figure 2.
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MDO3000 Series Oscilloscope
Demonstration Guide

1. Connect a passive probe to channel 1
on the oscilloscope.
2. Connect the ground lead of the probe
to the GND point and the probe tip to
the RARE_ANOMALY signal on the
demonstration board.
3. Press Default Setup button to set the
oscilloscope to the factory setup, and
then press Autoset.
Figure 3.
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MDO3000 Series Oscilloscope
Demonstration Guide

4. Press Trigger Menu front panel button.
Press Mode Auto & Holdoff lower-bezel
button.
5. Turn Multipurpose a to increase holdoff
time to 600.0000ns.
Figure 4.
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MDO3000 Series Oscilloscope
Demonstration Guide

6. Press the Acquire front-panel button.
7. Press FastAcq lower-bezel button. Turn
on the FastAcq by pressing FastAcq
side-bezel button and select On.
8. Press the lower-bezel Waveform Display
button.
9. Turn Multipurpose aclockwise to adjust
persist time to ∞s (infinite).
This step will ensure that all events
captured will remain displayed on the
oscilloscope. After several seconds you
will notice that erroneous patterns in
dark blue will begin filling the display.
The digital phosphor display with color
intensity grading shows the history of the
signal’s activity by using color to identify
areas of the signal that occur more
frequently, providing a visual display of
just how often anomalies occur. Figure 5.
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MDO3000 Series Oscilloscope
Demonstration Guide

Now we see an erroneous runt in the signal.
To capture it, follow the steps below.
10. Press the side-bezel Set to Auto button
to turn off infinite persistence.
11. Press FastAcq lower-bezel button and
then press FastAcq side-bezel button to
turn off FastAcq.
12. Press trigger Menu, select Type Edge
bottom bezel button, use Multipurpose
ato scroll down to Runt.
13. Press Thresholds lower-bezel button and
adjust High to approximately 2.00 V
using Multipurpose a, adjust Low to
about 1.00 V using Multipurpose b.
14. Press Mode lower-bezel button. Press
Normal side-bezel button.
15 Press the Menu Off button twice to
remove the menus. You should be
triggering on the runt signal. Figure 6.
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MDO3000 Series Oscilloscope
Demonstration Guide

Exercise 2
Wave Inspector®Navigation and
Automated Search
Trying to find one particular event, such as a spike on your
signal or a runt pulse, in a long waveform record can be
difficult. For example, a 10 M point record length on the
MDO3000 is equal to over 10,000 oscilloscope screens worth
of data! To make it easier to find what you are looking for, the
MDO3000 Series has a special feature called Wave Inspector
which provides tools for quickly moving through long records
including an automated search function.
The following steps will explore the use of waveform
navigation and search tools that greatly simplify finding events
of interest.
Figure 7.
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MDO3000 Series Oscilloscope
Demonstration Guide

1. Connect the channel 1 probe tip to the
FREQ_ANOMALY (Frequent Anomalies)
signal on the demonstration board.
Connect the ground lead of the probe to
the GND point.
2. Press the front panel Default Setup
button to set the oscilloscope to a known
state. Press Autoset.
3. Press trigger Menu, select Type Edge
lower-bezel button, use Multipurpose a
to scroll down to Runt.
4. Press Thresholds lower-bezel button
and adjust High to approximately 2.00 V
using Multipurpose a, adjust Low to
about 1.00 V using Multipurpose b.
Now you are triggering on a runt.
Figure 8.
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MDO3000 Series Oscilloscope
Demonstration Guide

Capturing the signal with sufficient detail
is critical to successful debugging. For
example, if you are interested in how
frequent the runt signal occurs, you
can acquire a long time window with a
long record length and search for runt
signals.
5. To increase the record length, press
Acquire, select the Record Length
lower-bezel button, then select the
10 M points using Multipurpose a.
6. Press the Menu Off button to remove
the menus.
7. Turn the Horizontal Scale knob to select
1.00 ms per division.
8. Press the front panel Single button to
make an acquisition.
9. Press the front panel Search button.
10. Press Search lower-bezel button.
11. Press Copy Trigger Settings To Search
side-bezel button.
Figure 9.
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MDO3000 Series Oscilloscope
Demonstration Guide

Now all runts in the acquisition that meet
this trigger specification are marked with
a hollow white triangle at the top of the
display. Notice the number of search
events shown in the lower left corner is
three.
13. Press the Menu Off button to remove the
menus.
Figure 10.
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MDO3000 Series Oscilloscope
Demonstration Guide

It is very difficult to see much signal
detail in this display. If we zoom in on the
waveform, the details become visible.
14. Turn the inner Wave Inspector control
and notice how the upper window of the
display shows the context while the lower
window shows the zoomed details.
15. Turn the outer, spring-loaded Wave
Inspector control to pan right and left
through the acquired waveform. The
further you turn the control, the faster the
panning.
16. You can also navigate to one of the
marks using the ←and →arrow
buttons.
Figure 11.
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MDO3000 Series Oscilloscope
Demonstration Guide

Exercise 3
Decoding, Triggering and Searching
Serial Buses
Tired of having to visually inspect serial data streams to
determine if each bit is a 1 or a 0? Tired of having to start,
stop, and then manually combine bits into bytes to determine
hex values? The MDO3000 Series can automatically decode
and trigger on packet-level content, such as the start of a
packet, specific addresses, specific data content, and unique
identifiers on popular serial interfaces, such as I2C, SPI, CAN,
LIN, FlexRay USB2.0, RS-232, RS-422, RS-485, UART,
Audio, MIL-STD-1553. The MDO3000 Series also provides
a Bus Display view of the individual signals that make up the
bus, such as clock, data, and chip enable. This Bus Display
view makes it easy for you to identify where packets begin
and end, and to identify sub-packet components, such as
address, data, identifiers, CRC and so on.
This exercise demonstrates the ability of the MDO3000 Series
to help you debug I2C circuits.
Note: Serial Bus Analysis modules are available for purchase.
For demonstration purposes all application modules and
options are enabled in MDO3000 demo units.
Note: You can find more serial bus demonstrations in
MDO3000 built-in demos. Press front panel Utility button.
Press Utility Page lower-bezel button. Select Demo use
Multipurpose a. More serial bus demos are under Serial Bus
group.
Figure 12.
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MDO3000 Series Oscilloscope
Demonstration Guide