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Form 080/01
DPO7000 Series
Digital Phosphor Oscilloscopes
Quick Start User Manual
Tektronix products are covered by U.S. and foreign patents, issued and pending. Information in this publication supersedes that in all
previously pub
lished material. Specifications and price change privileges reserved.
Tektronix, Inc
TEKTRONIX and T
FastFrame, Ope
., P.O. Box 500, Beaverton, OR 97077
EK are registered trademarks of Tektronix, Inc.
nChoice, iView, Pinpoint, MyScope, TekLink, and MultiView Zoom are trademarks of Tektronix, Inc.
Contacting Tektronix
Tektronix, Inc.
14200 SW Karl Braun Drive
P.O. Box 500
Beaverton, OR 97077
USA
For product information, sales, service, and technical support:
In North America, call 1-800-833-9200.
Worldwide, visit www.tektronix.com to find contacts in your area.
Warranty 2
Tektronix warrants that this product will be free from defects in materials and workmanship for a period of one (1) year from the date of
shipment. If any such product proves defective during this warranty period, Tektronix, at its option, either will repair the defective
product without charge for parts and labor, or will provide a replacement in exchange for the defective product. Parts, modules and
replacement products used by Tektronix for warranty work may be new or reconditioned to like new performance. All replaced
parts, modules and products become the property of Tektronix.
In order to obtain service under this warranty, Customer must notify Tektronix of the defect before the expiration of the warranty period
and make suitable arrangements for the performance of service. Customer shall be responsible for packaging and shipping the
defective product to the service center designated by Tektronix, with shipping charges prepaid. Tektronix shall pay for the return of the
product to Customer if the shipment is to a location within the country in which the Tektronix service center is located. Customer shall
be responsible for paying all shipping charges, duties, taxes, and any other charges for products returned to any other locations.
This warranty shall not apply to any defect, failure or damage caused by improper use or improper or inadequate maintenance and
care. Tektronix shall not be obligated to furnish service under this warranty a) to repair damage resulting from attempts by personnel
other than Tektronix representatives to install, repair or service the product; b) to repair damage resulting from improper use or
connection to incompatible equipment; c) to repair any damage or malfunction caused by the use of non-Tektronix supplies; or
d) to service a product that has been modified or integrated with other products when the effect of such modification or integration
increases the time or difficulty of servicing the product.
THIS WARRANTY IS GIVEN BY TEKTRONIX WITH RESPECT TO THE PRODUCT IN LIEU OF ANY OTHER WARRANTIES,
EXPRESS OR IMPLIED. TEKTRONIX A ND ITS VENDORS DISCLAIM ANY IMPLIED WARRANTIES O F MERCHANTABILITY OR
FITNESS FOR A PARTICULAR PURPOSE. TEKTRONIX’ RESPONSIBILITY TO REPAIR OR REPLACE DEFECTIVE PRODUCTS
IS TH E SOLE AND EXCLUSIVE REMEDY PROVIDED TO THE CUSTOMER FOR BREACH OF TH IS WARRANTY. TEKTRONIX
AND ITS VENDORS WILL NOT BE LIABLE FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
IRRESPECTIVE OF WHETHER T EKTRONIX OR THE VENDOR HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH
DAMAGES.
SettingUp E-mail on Event .....................................................................................................93
Correlating Data Between a Tektronix Oscilloscope and Logic Analyzer. . ... . ... . ... . ... . ... . ... . ... . ... .. .. . . ... .. .. . . ... ..95
iiDPO7000 Series Quick Start User Manual
General Safety S
ummary
General Safet
Review the following safety precautions to avoid injury and prevent damage to this product or any products connected to it.
To avoid potential hazards, use this product only as specified.
Only qualified personnel should perform service procedures.
While using this product, you may need to access other parts of a larger system. Read the safety sections of the other
component manuals for warnings and cautions related to operating the system.
To Avoid Fire or Personal Injury
Use Proper Power Cord. Use only the power cord specified for this product and certified for the country of use.
Connect and Disconnect Properly. Do not connect or disconnect probes or test leads while they are connected
to a voltage so
Ground the Pro
shock, the grounding conductor must be connected to earth ground. Before making connections to the input or output
terminals of the product, ensure that the product is properly grounded.
Observe All Terminal Ratings. To avoid fire or shock hazard, observe all r atings and markings on the product. Consult
the product m
The inputs ar
urce.
anual for further ratings information before making connections to the product.
e not rated for connection to mains or Category II, III, or IV circuits.
y Summary
duct.
This product is grounded through the grounding conductor of the power cord. To avoid electric
Connect the p
Power Discon
must remain accessible to the user at all times.
robe reference lead to earth ground only.
nect.
The power cord disconnects the product from the power source. Do not block the power cord; it
Do Not Operate Without Covers. Do not operate this product with covers or panels removed.
Do Not Operate With Suspected Failures. If you suspect that there is damage to this product, have it inspected by
qualified service personnel.
Avoid Exposed Circuitry. Do not touch exposed connections and components when power is present.
Do Not Operate in Wet/Damp Conditions.
Do Not Operate in an Explosive Atmosphere.
Keep Product Surfaces C lean and Dry.
Provide Proper Ventilation.
proper vent
ilation.
Refer to the manual’s installation instructions for details on installing the product so it has
DPO7000 Series Quick Start User Manualiii
General Safety S
TermsinthisManual
These terms may appear in this manual:
WARNING. Warning statements identify conditions or practices that could result in injury or loss of life.
CAUTION. Caution statements identify conditions or practices that could result in damage to this product or other property.
Symbols and Terms on the Product
These terms may appear on the product:
DANGER indicates an injury hazard immediately accessible as you read the marking.
WARNING indicates an injury hazard not immediately accessible as you read the marking.
CAUTION indicates a hazard to property including the product.
The following symbols may appear on the product:
ummary
ivDPO7000 Series Quick Start User Manual
Environmental C
onsiderations
Environmenta
This section provides information about the environmental impact of the product.
Product End-of-Life Handling
Observe the following guidelines when recycling an instrument or component:
Equipment Recycling. Production of this equipment required the extraction and use of natural resources. The
equipment may contain substances that could be harmful to the environment or human health if improperly handled at the
product’s end of life. In order to avoid release of such substances into the environment and to reduce the use of natural
resources, we encourage you to recycle this product in an appropriate system that will ensure that most of the materials are
reused or recycled appropriately.
The symbol shown below indicates that this product complies with the European Union’s requirements according to D irective
2002/96/EC on w aste electrical and electronic equipment (WEEE). For information about recycling options, check the
Support/Service section of the Tektronix Web site (www.tektronix.com)
l Considerations
Mercury Notification. This product uses an LCD backlight lamp that contains mercury. Disposal may be regulated due
to environmental considerations. P lease contact your local authorities or, within the United S tates, the Electronics Industries
Alliance (
www.eiae.org) for disposal or recycling information.
Restriction of Hazardous Substances
This product has been classified as Monitoring and Control equipment, and is outside the scope of the 2002/95/EC RoHS
Directive. This product is known to contain lead, cadmium, mercury, and hexavalent chromium.
DPO7000 Series Quick Start User Manualv
Preface
Preface
This manual describes the i nstallation and operation of DPO7000 Series Instruments. Basic operations and concepts are
presented in this manual. For more detailed information see the online help on your instrument. The following instruments
are supported by this manual:
DPO7254
DPO7104
DPO7054
Key Features
DPO7000 Series instruments can help you verify, debug, and characterize electronic designs. Key features include:
2.5 GHz bandwidth and 10 GS/s real time sampling rate on all channels, 40 GS/s on 1 channel, DPO7254
1 GHz bandwidth and 5 GS/s (10 GS/s optional) real time sampling rate on all channels, 20 GS/s (40 GS/s optional)
on 1 channel, DPO7104
500 MHz bandwidth and 2.5 GS/s (5 GS/s optional) real time sampling rate on all channels, 10 GS/s (20 GS/s optional)
on 1 channel, DPO7054
Record lengths up to 400,000,000 samples, depending on model and option
Up to 1.0% DC vertical gain accuracy
Four input channels (each with 8-bit resolution when not in Hi-Res mode), auxiliary trigger input and output
Full programmability, with an extensive GPIB-command set and a message-based interface
Trigger types include edge, logic, pulse (may be logic qualified), selectable for both A and B trigger events. Window
trigger mode triggers as the trigger source passes into or out of a defined window. Triggers can be logic qualified. Setup
and hold trigger mode triggers when a logic input changes state inside of the setup and hold times relative to the clock.
Trigger jitter is less than 1.5 ps RMS (typical), depending on model. You can typically trigger on a glitch or pulse of less
than 200 ps in width. Low speed serial triggering and serial pattern triggering are available on some models o r options.
Powerful built-in measurement capability, including histograms, automatic measurements, eye pattern measurements
and measurement statistics
Mathematically combine waveforms to create
math equations. Use spectral analysis to analyze waveforms in the frequency domain.
A large 12.1 inch (307.3 mm) high resolution XGA color display that supports color grading of waveform data to show
sample density. Display 10 divisions both horizontally and vertically.
MultiView Zoom to view and compare up to four zoom areas at a time. Lock and manually or automatically scroll up
to four zoom areas.
Customizable MyScope control windows
waveforms that support your data-analysis task. Use arbitrary filters in
An intuitive, graphical user interface (UI), with online help that is built in and available on screen
Internal, removable disk storage
Wide array of probing solutions
viDPO7000 Series Quick Start User Manual
Documentation
Review the following for the location of different types of information available for this product.
To read aboutUse these documents
Installation and Operation (overviews)Quick Start User Manual. Provides general operating information.
In-Depth Operation and User Interface H elpOnline Help. Provides detailed instructions for using instrument functions.
Programmer CommandsProgrammer guide (on the product software CD). Includes the syntax of
Analysis and Connectivity ToolsGetting Started with OpenChoice Solutions Manual. Provides information
Conventions Used in this Manual
The following icons are used throughout this manual.
Preface
Access online help from the Help button or Help menu for information on
controls and elements on screen. (See page 12, Accessing Online Help.)
the GPIB commands.
about various connectivity and analysis tools available on your instrument.
Sequence
Step
Front panel
power
Connect
power
Network
PS2SVGAUSB
DPO7000 Series Quick Start User Manualvii
Preface
viiiDPO7000 Series Quick Start User Manual
Install Your Instrument
Unpack the instrument and check that you received all items listed as Standard Accessories. Recommended accessories,
probes, instrument options, and upgrades are listed in the online help. Check the Tektronix Web site (www.tektronix.com)
for the most current information.
Standard Accessories
AccessoryTektronix part number
DPO7000 Digital Phosphor Oscilloscopes Quick Start User Manual
DPO7000 Product Software CD
Operating System Restore CD
Optional Applications Software CD and Documentation KitOrder by description
Online Help (part of the product software)
Performance Verification (a pdf file on the Product Software CD)
Programmer Online Guide (files on the Product Software CD)
NIST, Z540-1, and ISO9000 Calibration Certificate
Four 10X passive probes, 500 MHz models, DPO7054 only
Mouse, optical119-7054-xx
Front Cover
Accessory Pouch016-1966-xx
Probe Calibration and Deskew Fixture, with instructions
Nero OEM Software CD
Power Cord
North America (Option A0)
Universal Euro (Option A1)
United Kingdom (Option A2)
Australia (Option A3)
Switzerland (Option A5)
Japan (Option A6)
China (Option A10)
India (Option A11)
No power cord or AC adapter (Option A99)
Install Your Ins
020-2335-xx
020-2693-xx
020-2659-xx
—
—
—
—
P6139A
200-4963-xx
067-0405-xx
063-3781-xx
161-0104-00
161-0104-06
161-0104-07
161-0104-05
161-0167-00
161-A005-00
161-0306-00
161-0324-00
—
trument
DPO7000 Series Quick Start User Manual1
Install Your Ins
trument
Operating Requirements
1. Place the instrument on a cart or bench,
observing cle
Top: 0in(0mm)
arance requirements:
Left and right
Bottom: 0 in (0
flip stands down
Rear: 0 in (0 mm) on rear feet
2. Before operating, ensure that the
ambient temperature is between 0 °C to
+50 °C (+32 °F
CAUTION.
To ensure proper cooling, keep the bottom and sides of the instrument clear of obstructions.
side: 3 in (76 mm)
mm) standing on feet,
to +122 °F).
2DPO7000 Series Quick Start User Manual
Powering On the Instrument
Power Supply Requirements
Source voltage and FrequencyPower Consumption
100–240 V
or 115 V
±10%, 50–60 Hz
RMS
%, 400 Hz
±10
RMS
≤ 400 VA
Install Your Ins
trument
DPO7000 Series Quick Start User Manual3
Install Your Ins
trument
Powering Off the Instrument
Removing the Power
Connecting to a Network
You can connect your instrument to a
network for printing, file sharing, internet
access, and other functions. Consult with
your network administrator and use the
standard Windows utilities to configure the
instrument for your network.
4DPO7000 Series Quick Start User Manual
Adding a Second Monitor
You can operate the instrument while using Windows and installed applications on an external monitor. Follow the procedure
below to set up a dual monitor configuration.
1. Turn off power.
2. Connect second monitor.
3. Connect keyboard.
4. Connect mouse.
Install Your Ins
trument
5. Turn on instrument power.
6. Turn on monitor power.
DPO7000 Series Quick Start User Manual5
Install Your Ins
trument
7. Right-click on
the Windows desktop, and
then select Properties.
8. Select Settings. Click the grayed out
external monitor ( 2 ), and drag it to the
left of monitor 1.
9. Select Yes when you are prompted to
enable the new monitor.
10. Click Apply.
11. Click Yes to restart your instrument.
6DPO7000 Series Quick Start User Manual
Getting Acquain
tedwithYourInstrument
Getting Acqua
Front Panel
1. DVD/CD-RW drive
2. Front panel controls
3. USB port
4. G round terminal
5. Recovered clock output, DPO7254 only
6. Recovered data output, DPO7254 only
7. Probe compensation output
8. Probe calibration output
9. Channel 1–4 input
10. Auxiliary Trigger input
inted with Your Instrument
DPO7000 Series Quick Start User Manual7
Getting Acquain
ted with Your Instrument
Side and Rear Panels
1. USB ports
2. Video port to c
side-by-side display
3. Mic connector for microphone
4. Line Out connector for speaker
5. Scope Only XG A Out video port to
connect a monitor
6. Printer connection
7. Line In connector
8. RJ-45 LAN connector to connect to
network
9. Centronics Pa
10. COM 1 serial p
11.
PS-2 connector for mouse
12.
13. TekLink conn
14. Removable ha
onnect a monitor for
rallel Port
ort
PS-2 connect
ector for future use
rd disk drive
or for keyboard
15. GPIB port to c
16. Auxiliary ou
17. Channel 3 out
18. External ref
tput
erence input
onnect to controller
put
5 GHz models
≤2.
8DPO7000 Series Quick Start User Manual
Interface and Display
The menu bar mode provides access to commands that control all of the instrument features and functions. The toolbar
mode provides access to the most common features.
1. Menu Bar: Access to data I/O, printing,
online help, and instrument functions
2. Buttons/Menu: Click to toggle between
toolbar and menu bar modes and to
customize your toolbar
3. Multipurpose Knob Readouts: Adjust
and display parameters controlled by the
multipurpose knobs
4. Display: Live, reference, and math
waveforms display here, along with
cursors
5. Waveform Handle: Click and drag to
change vertical position of waveform.
Click the handle and change the position
and scale using the multipurpose knobs.
Getting Acquain
tedwithYourInstrument
6. Controls Status: Quick reference to
vertical selections, scale, offset, and
parameters
7. Readouts: Display cursor and
measurement readouts in this area.
Measurements are selectable from the
menu bar or toolbar. If a control window
is displayed, some combinations of
readouts move to the graticule area.
WARNING. Automatic amplitude-related
measurements where the signal is vertically
clipped produce inaccurate results. Clipping
also causes inaccurate amplitude values in
waveforms that are stored or exported for
use in other programs. If a math waveform
is clipped, it will not affect amplitude
measurements on that math waveform.
8. Status: Display of acquisition status,
mode, and number of acquisitions;
trigger status; date; time; and quick
reference to record length and horizontal
parameters
DPO7000 Series Quick Start User Manual9
Getting Acquain
1. Buttons/Menu: Click to toggle between
toolbar and menu bar modes and to
customize the
ted with Your Instrument
toolbar
2. Drag cursors to
screen
3. Drag the position icons to reposition a
waveform
4. Click the icon to assign the multipurpose
knobs to wavef
scale
5. Drag across the waveform area to create
a box for zooming, enabling/disabling
histograms,
6. Drag icon to c
measure waveforms on
orm vertical position and
and gating measurements
hange the trigger level
10DPO7000 Series Quick Start User Manual
Control Panel
1. Push to automatically set up the vertical,
horizontal, a
selected channels.
2. Push to return settings to default values.
3. Push to make a hard copy or save a
screen capture.
4. Push to turn on MultiView Zoom and add
a magnified gra
nd trigger controls based on
ticule to the display.
Getting Acquain
tedwithYourInstrument
5. Horizontall
set record length (resolution) of all
waveforms.
6. Use to start and stop acquisition, start a
single acqui
or start fast acquisitions.
7. Use to set the trigger parameters. Push
Advanced to display additional trigger
functions.
lights show the acquisition status.
8. Turn to adjust waveform intensity.
9. Turn to adjust parameters selected from
the screen interface. Push to toggle
between nor
10. Push to turn
11. Push to
12. Turn ch
Vertically scale, position, or offset the
waveform. Toggle between position and
offset
y s cale, position, delay, and
sition sequence, clear data,
The Arm, Ready, and Trig’D
mal and fine adjustment.
cursors on or off.
turn the touch screen on and off.
annel displays on and off.
.
DPO7000 Series Quick Start User Manual11
Getting Acquain
ted with Your Instrument
Accessing Online Help
In-depth information is available in the online help on all the features of your instrument.
To access context-sensitive help on the
active window, select Help > Help on
Window... or press F1.
1. To access any topic in the help system,
select Help > Contents and Index....
2. Use the Contents, Index, Search, or
Favorites tab to select the topic, and
then click Display.
To navigate within the help system you can:
Click a button in a help w indow to
navigate between the Overview and
specific topics.
Click the Minimize button in the help
window to move help out of the way so
you can operate the instrument.
Click Alt and Tab to see the last help
topic again.
12DPO7000 Series Quick Start User Manual
Accessing Menus and Control Windows
You can access menus and control windows using the following techniques:
Click a menu, and then select a
command.
For a shortcut menu, right-click
anywhere in the graticule or on an object.
The shortcut menu is context sensitive
and varies with the area or object where
you right-clicked. Some examples are
showninthefigure at r ight.
Getting Acquain
tedwithYourInstrument
In the to
quickly access a setup control window.
(See page 9.)
DPO7000 Series Quick Start User Manual13
olbar mode, click a button to
Inspect Your Ins
trument
Inspect Your Instrument
Use the following procedures to verify the functionality of your instrument.
Verify Internal Diagnostics Pass
1. Power on the instrument.
2. Select Instrument Diagnostics....
14DPO7000 Series Quick Start User Manual
3. Click Run. The test results appear in the
diagnostics control window.
4. Verify that all tests pass. If diagnostic
failures occur
Tektronix service personnel.
, contact your local
Signal Path Compensation
Use this procedure if the temperature has changed more than 5 °C (9 °F) since the last signal path compensation.
Perform the signal path compensation once a week. Failure to do so may result in the instrument not meeting warranted
performance levels.
1. Prerequisites: instrument powered on
for 20 minutes, and all input signals
removed.
Inspect Your Ins
trument
2. Select Instrument Calibration.
DPO7000 Series Quick Start User Manual15
Inspect Your Ins
trument
3. When the status
changes to Temp,
click Calibrate to start the calibration.
Calibration may take 10 to 15 minutes.
4. If the instrument does not Pass,
recalibrat
e the instrument, or have the
instrument serviced by qualified service
personnel.
16DPO7000 Series Quick Start User Manual
Acquisition
This section contains concepts of and procedures for using the acquisition system.
Setting Up Signal Input
Use front-panel buttons to set up your instrument to acquire the signal.
Acquisition
1. Connect the pr
source.
2. Select the input channel by pushing
the front-panel buttons to toggle the
channels on and off.
obe to the input signal
DPO7000 Series Quick Start User Manual17
Acquisition
3. Press Autoset.
4. Adjust the vert
offset using the front-panel knobs. (Push
the knob to toggle between position and
offset.)
5. Adjust the horizontal position and scale
using the front-panel knobs.
The horizontal position determines the
number of pretrigger and posttrigger
samples.
ical position, scale, and
Using Default Setup
1. To quickly return to the factory default
settings, push DEFAULT SETUP.
18DPO7000 Series Quick Start User Manual
Using Autoset
Use Autoset to quickly and automatically set up the instrument (acquisition, horizontal, trigger, and vertical) based on the
characteristics of the input signal. Autoset makes adjustments to the signal such that the waveform displays two or three
cycles with the trigger level near the midlevel.
1. Connect the probe, and then select the
input channel. (See page 17, Setting UpSignal Input.)
2. Push the AUTOSET button to execute
an Autoset.
3. Click Undo if you want to undo the
last Autos
affected by Autoset retain their settings.
Acquisition
et. Parameters that are not
Quick Tips
To position the waveform appropriately, Autoset may change the vertical position. Autoset always sets vertical offset
to0V.
If you use Autoset when one or more channels are displayed, the instrument selects the lowest numbered channel for
horizontal scaling and triggering. You can individually control the vertical scaling of each channel.
If you use Autoset when no channels are displayed, the instrument turns on channel one (Ch 1) and scales it.
Close Autoset Undo control window by clicking the X. After Autoset Undo closes, you can s till undo the last Autoset by
selecting the Undo Last Autoset command from the Edit menu.
You can stop the Autoset Undo control window from opening automatically by changing the User Preferences in the
Utilities menu.
Probe Compensation, Calibration, and Deskew
To optimize measurement accuracy, see the instrument online help to perform the following procedures:
Compensate passive probes
Compensate the instrument signal path
DPO7000 Series Quick Start User Manual19
Acquisition
Calibrate active probes
Deskew input channels
Acquisition Co
Acquisition Hardware
Before a signa
has a dedicated input amplifier and digitizer. Each channel produces a stream of digital data from which the instrument
extracts waveform records.
Sampling Pro
Acquisition is the process of sampling an
analog signal, converting it into digital data,
and assembli
which is then stored in acquisition memory.
Real-time Sampling
In real-time sampling, the instrument digitizes
all of the p
event. Use real-time sampling to capture
single-shot or transient events.
ng it into a waveform record,
oints it acquires using one trigger
ncepts
l can be displayed, it must pass through the input channel where it is scaled and digitized. Each channel
cess
Interpolated Real-time Sampling
In interpolated real-time sampling, the
instrument digitizes all of the points it
s using one trigger event. If the
acquire
instrument cannot acquire enough samples
for a com plete wa veform at the maximum
ime sample rate, it interpolates. Use
real-t
interpolated real-time sampling to capture
single-shot, transient events, or slow
sitions.
acqui
20DPO7000 Series Quick Start User Manual
Equivalent-time Samplin g
The instrument uses equivalent-time
samplingtoex
its real-time maximum sampling rate.
Equivalent-time sampling is only used if
Equivalent Ti
base is set to a sampling rate that is too fast
to create a waveform record using real-time
sampling.
The instrument makes multiple acquisitions
of a repetitive waveform to obtain the sample
density requ
record. Thus, equivalent time sampling
should only be used with repetitive signals.
tend its sample rate beyond
me is selected and the time
ired for one complete waveform
Acquisition
Waveform R
The instrument builds the waveform record
through use of the following parameters:
Sample interval: The time between
sample po
Record le
required to fill a waveform record.
Trigger point: The zero time reference in
a waveform record.
Horizontal position: When horizontal
delay is o
a percentage of the waveform record
between 0 and 99.9 percent. The trigger
point an
thesametimeinthewaveformrecord.
For example, if the horizontal position is
50 perce
middle of the waveform record. When
horizontal delay is on, the time from the
trigge
is the horizontal delay.
ecord
ints.
ngth: The number of samples
ff, the horizontal position is
d the horizontal reference are at
nt, then the trigger point is in the
r point to the horizontal reference
DPO7000 Series Quick Start User Manual21
Acquisition
Interpolation
Your instrument can interpolate between the samples it acquires when it does not have all of the actual samples it needs to fill
the waveform record. Linear interpolation computes record points between actual acquired samples by using a straight line fi t.
Sin(x)/x interpolation computes record points using a curve fit between the actual values acquired. Sin(x)/x interpolation
is the default interpolation mode because it requires fewer actual sample points than linear interpolation to accurately
represent the waveform.
Quick Tip
Use the display style Intensified Samples to intensify the real samples and dim the interpolated samples. (See page 36,
Setting the D
isplay Style.)
How the Acquisition Modes Work
Sample mode retains the first sampled point
from each acquisition interval. Sample is the
default mod
e.
Peak Detect mode uses the highest and
lowest of all the samples contained in two
consecutiv
only works with real-time, noninterpolated
sampling and is useful for c atching high
frequency
Hi Res mode calculates the average
of all the s
interval. Hi-Res provides a higher-resolution,
lower-bandwidth waveform.
Envelope mode finds the highest and
lowest record points over many acquisitions.
Envelope uses Peak Detect for each
individual acquisition.
Average mode calculates the average value
for each record point over many acquisitions.
Average uses Sample mode for each
individual acquisition. Use average mode to
reduce random noise.
Waveform Database mode is a
three-dimensional accumulation of source
waveform data over several acquisitions. In
addition to amplitude and timing information,
the database includes a count of the number
of times a specific waveform point (time and
amplitude) has been acquired.
e acquisition intervals. This mode
glitches.
amples for each acquisition
22DPO7000 Series Quick Start User Manual
Changing the Acquisition Mode
Use this procedure to change the acquisition mode.
1. Select Horiz/Acq > Acquisition Mode.
2. To select an acquisition mode, do one
of the following:
Select a n acquisition mode directly
from the menu.
Click Mode..., and then select an
acquisition mode.
Acquisition
3. For Average or Envelope acquisition
modes, click the #ofWfmscontrol, and
then set the number of waveforms with
the multipurpose knob. For WfmDB
mode, click the Samples control, and
then set the number of samples with the
multipurpose knob.
Quick Tip
the keypad icon to set the number of waveforms or samples.
Click
DPO7000 Series Quick Start User Manual23
Acquisition
Starting and Stopping an Acquisition
After the channels that you want to acquire are selected, use the following procedure.
1. Press the front-panel RUN/STOP button
to start the acquisition.
2. Press the RUN/STOP button again to
stop the acquisition.
3. To take a single acquisition, press the
Single button.
Using FastAcq
Fast acquis
events such as glitches or runt pulses. Fast acquisition mode can also display waveform phenomena at an intensity that
reflects their rate-of-occurrence.
Use the following procedure:
1. Press FastAcq.
2. Find glitches, transients, or other random
ition mode reduces the dead time between waveform acquisitions, enabling the capture and display of transient
events.
When you have identified an anomaly,
set the trigger system up to look for it.
(See pag
Anomalies.)
e 85, Capturing Intermittent
24DPO7000 Series Quick Start User Manual
Using Roll Mode
Roll mode gives a display similar to a strip chart recorder for low-frequency signals. Roll mode displays acquired data points
without waiting for the acquisition of a complete waveform record.
1. Select Horiz/Acq >
Horizontal/Acquisition Setup....
2. If not selected, click the Acquisition tab.
Click Auto to turn on Roll mode.
Acquisition
NOTE. Roll m
Detect, or Hi Res acquisition mode.
3. To stop acquisitions in Roll mode:
ode requires Sample, Peak
If you are not in Single Sequence,
push RUN/STOP to stop Roll mode.
If you are in Single Sequence, Roll
mode acquisitions stop automatically
when a complete record is acquired.
Quick Tips
Switchin
Roll mode
g to Envelope, Average, or WfmDB acquisition mode will turn off Roll mode.
is disabled when you set the horizontal scale to 50 ms per division or faster.
DPO7000 Series Quick Start User Manual25
Pinpoint Trigge
rs
Pinpoint Triggers
The Pinpoint trigger system comes with advanced trigger types that are usable on both A and B triggers, and it can reset the
trigger sequence if the B event does not occur after a specific number of events or a specific time. Pinpoint triggers support
capture of events based on the most complex trigger event or sequence of trigger events.
This section contains concepts and procedures for using the trigger system.
Triggering Concepts
Trigger Event
The trigger event establishes the time-zero point in the waveform record. All waveform record data are located in time with
respect to that point. The instrument continuously acquires and retains enough sample points to fill the pretrigger portion of
the waveform record. When a trigger event occurs, the instrument starts acquiring samples to build the posttrigger portion of
the waveform record (displayed after, or to the right of, the trigger event). Once a trigger is recognized, the instrument will not
accept another trigger until the acquisition is complete and the holdoff time has expired.
Trigger Modes
The trigger
Auto mode, w
display. The waveform will appear to roll across the screen. If valid triggers occur, the display will become stable.
You can also force the instrument to trigger with an edge trigger by clicking the Force Trigger button on the Trigger Setup
control window.
Select the trigger mode in the Trig > Mode menu. For more information, see the instrument online help.
Trigger Ho
Trigger holdoff can help stabilize triggering. When the instrument recognizes a trigger event, it disables the trigger system
until acquisition is complete. In addition, the trigger system remains disabled during the holdoff period that follows each
acquisition. Adjust holdoff to obtain stable triggering when the instrument is triggering on undesired trigger events.
Set the trigger holdoff in the Trig > Holdoff menu. For more information, see the instrument online help.
mode determines how the instrument behaves in the absence of a trigger event:
Normal trig
waveform record acquired remains on the display. If no last waveform exists, no waveform is displayed.
Auto trigger mode enables the instrument to acquire a waveform even if a trigger does not occur. Auto mode uses a timer
that starts after a trigger event occurs. If another trigger event is not detected before the timer times out, the instrument
forces a tri
ger mode enables the instrument to acquire a waveform only when it is triggered. If no trigger occurs, the last
gger. The length of time it waits for a trigger event depends on the time base setting.
hen forcing triggers in the absence of valid triggering events, does not synchronize the waveform on the
ldoff
26DPO7000 Series Quick Start User Manual
Pinpoint Trigge
Trigger Coupling
Trigger coupling determines what part of the signal is passed to the trigger circuit. Edge triggering can use a ll available
coupling types: AC, DC, Low Frequency Rejection, High Frequency Rejection, and Noise Rejection. All other trigger
types use DC coupling only.
Select the trigger coupling in the Trig > A Event (Main) Trigger Setup menu. For more information, see the instrument
online help.
Horizontal Po sition
Horizontal position defines where the trigger occurs on the waveform record. It lets you choose how much the instrument
acquires bef
part that occurs after the trigger is the posttrigger portion.
Pretrigger data can be valuable when troubleshooting. For example, if you are trying to fi nd the cause of an unwanted glitch
in your test circuit, you can trigger on the glitch and make the pretrigger period large enough to capture data before the
glitch. By an
Alternatively, if you want to see what is happening in your system as a result of the trigger event, make the posttrigger period
large enough to capture data after the trigger.
ore and after the trigger event. The part of the record that occurs before the trigger is the pretrigger portion. The
alyzing what happens before the glitch, you may uncover information that helps you find the source of the glitch.
rs
Slope and Le
The slope control determines whether the instrument finds the trigger point on the rising or the falling edge of a signal. The
level control determines where on that edge the trigger point occurs.
vel
Delayed Trigger System
You can trigger with the A (Main) trigger system alone or you can combine the A (Main) trigger with the B (Delayed) trigger
to trigger on sequential events. When using sequential triggering, the A trigger event arms the trigger system, and the B
trigger ev
separate sources. The B trigger condition can be based on a time delay or a specified number of events. (See page 31,
Using A (Main) and B (Delayed) Triggers.)
ent triggers the instrument when the B trigger conditions are met. A and B triggers can (and typically do) have
DPO7000 Series Quick Start User Manual27
Pinpoint Trigge
rs
Choosing a Trigger Type
Your instrume
the Trigger Setup control window.
1. Push EDGE.
2. Set the source, slope and mode. To set
the c oupling use the Trig > Edge Setup
menu.
3. To select one
do one of the following:
nt allows you to modify basic trigger parameters from the front panel or set up more advanced triggers in
of the other trigger types,
Push ADVANCED
Select a trigger type directly from the
Trig menu.
4. Complete the trigger setup using the
controls displayed for the trigger type.
The controls to set up the trigger vary
depending on the trigger type.
28DPO7000 Series Quick Start User Manual
Pinpoint Trigger Selections
Trigger TypeTrigger Conditions
Edge
Glitch
Width
Runt
Window
Timeout
Pinpoint Trigge
Trigger on a rising or falling edge, as defined by the slope control. Coupling choices
are DC, AC, LF Reject, HF Reject, and Noise Reject.
Trigger on a pulse narrower (or wider) than the specified width or ignore glitches
narrower (or wider) than the specified width.
Trigger on pulses that are inside or outside a specified time range. Can trigger
on positive or negative pulses.
Trigger on a pulse amplitude that crosses one threshold but fails to cross a second
threshold before recrossing the first. Can detect positive or negative runts, or only
those wider than a specified width. These pulses can also be qualified by the logical
state of other channels.
Trigger when the input signal rises above an upper threshold level or falls below a
lower threshold level. Trigger the instrument as the signal is entering or leaving the
threshold window. Qualify the trigger event in terms of time by using the Trigger
When Wider option, or by the logical state of other channels using the Trigger When
Logic option.
Trigger when no pulse is detected within a specified time.
rs
Transition
SerialTrigger on 64-bit serial pattern at data rates up to 1.25 Gb/s. Requires Option PTM.
Pattern
StateTrigger when all of the logic inputs to the selected logic function cause the function to
Setup/ HoldTrigger when a logic input changes state inside of the setup and hold times relative
Comm
Video
SPITrigger on Serial Peripheral Interface (SPI) signals.
I2CTrigger on Inter-IC Control (I2C) signals: start, stop, repeated start, missing
RS-232Trigger on RS-232 signals.
Trigger on pulse edges that traverse between two thresholds at faster or slower rates
than the specified time. The pulse edges can be positive or negative.
This mode includes clock recovery. Push set 50% to reinitialize clock recovery.
Trigger when logic inputs cause the selected function to become True or False. You
can also specify that the logic conditions must be satisfied for a specificamountof
time before triggering.
be True or False when the clock input changes state.
to the clock.
Trigger in conjunction with mask testing on communications codes and standards.
The controls work together to define the parameters for the trigger event (available
with Option MTM). This mode includes clock recovery. Push set 50% to reinitialize
clock recovery.
Trigger on specified fields or lines of a composite video signal. Only composite
signal formats are supported.
acknowledge, address, data, and address and data.
CANTrigger on CAN Bus signals.
DPO7000 Series Quick Start User Manual29
Pinpoint Trigge
rs
Checking Trigger Status
You can check the trigger status from the status lights on the front panel or from the readout.
Check the ARM, READY, and TRIG’D
front-panel controls to determine the trigger
status.
If TRIG’D is on, the instrument has
recognized a valid trigger and is fill ing
the posttrigger portion of the waveform.
If READY is on, the instrument can
accept, and is waiting for, a valid trigger
to occur. Pretrigger data has been
acquired.
If ARM is on, the trigger circuitry is filling
the pretrigger portion of the waveform
record.
If both TRIG’D and READY are on,
a valid A event trigger has been
recognized and the i nstrument is waiting
for a delayed trigger. When a delayed
trigger is recognized, the posttrigger
portion of the delayed waveform will fill.
If ARM, TRIG’D, and READY are off,
acquisitions have stopped.
To quickly determine the settings of some
key trigger parameters, check the Trigger
readout at the bottom of the display. The
readouts differ for edge and the advanced
triggers:
1. A trigger source = Ch1
2. Trigger slope = rising edge
3. Trigger level
4. Time base
30DPO7000 Series Quick Start User Manual
Using A (Main) and B (Delayed) Triggers
You can use the A Event (Main) trigger for simple signals or combine it with the B Event (Delayed) trigger to capture
more complex signals. After the A Event occurs, the trigger system looks for the B Event before triggering and displaying
the waveform.
A Trigger
1. Select Trig > A Event (Main) Trigger
Setup....
Pinpoint Trigge
rs
2. Set the A tr
A Event tab.
igger type and source in the
B Trigger (Delayed)
3. Choose a function in the A →B Seq tab.
4. Set the trigger delay time or the number
of B events.
DPO7000 Series Quick Start User Manual31
Pinpoint Trigge
5. Set the B trigger characteristics in the B
6. Select Normal Trigger Mode and Holdoff
rs
Event (Delayed) tab.
in the Mode tab.
Trigger on B Event
The A trigger arms the instrument.
gger acquisition starts on the nth B
Posttri
event.
32DPO7000 Series Quick Start User Manual
B Trigger After Delay Time
The A trigger arms the instrument.
Posttrigger a
edge after the trigger delay time.
cquisition starts on the first B
Pinpoint Trigge
rs
Triggering
You can specify a condition to reset the
trigger system if it occurs before the B trigger
event. Whe
trigger system stops waiting for the B event
and returns to waiting for the A event.
with Rese t
n the reset event occurs, the
Quick Tips
ger delay time and horizontal delay time are independent functions. When you establish a trigger condition using
B-trig
either the A trigger alone or the A and B triggers together, you can also use horizontal delay to delay the acquisition
by an additional amount.
DPO7000 Series Quick Start User Manual33
Pinpoint Trigge
rs
SendingE-mailonTrigger
You must configure e-mail on event before performing the following procedure. (See page 93, Setting Up E-mail on Event.)
1. Select Trig > A Event (Main) Trigger
Setup....
2. Select the Mode tab.
3. Under E-mail on Trigger, click On, and
then click Setup. (See page 93, Setting
Up E-mail on Event.)
Using Horizontal Delay
Use horizontal delay to acquire waveform
detail in a region that is separated from the
trigger location by a significant interval of
time.
1. Push DELAY.
2. Adjust the delay time with the horizontal
POSITION control, or enter the delay
the control window.
time in
3. Adjus
t the horizontal SCALE to acquire
the detail that you need.
34DPO7000 Series Quick Start User Manual
Quick Tips
Use MultiView Zoom and Horizontal Delay together to magnify a delayed acquisition.
Toggle Horizontal Delay on and off to quickly compare signal details at two different areas of interest, one near the
trigger location and the other centered at the delay time.
Pinpoint Trigge
rs
DPO7000 Series Quick Start User Manual35
Display a Wavefo
rm
Display a Wave
This section contains concepts and procedures for displaying a waveform. Detailed information is available in the online help.
form
Setting the Display Style
To set the display style select Disp lay >
Display Style, and then select one of the
following styles:
Displays waveforms with
lines drawn between
record points.
Displays waveform
record points as dots on
the screen.
Displays the actual
samples. Interpolated
points are
not displayed.
36DPO7000 Series Quick Start User Manual
Setting the Display Persistence
Display a Wavefo
rm
Select Displa
then select the type of persistence.
No persistence shows record points for
the current acquisition only. Each new
waveform rec
acquired record for a channel.
Infinite persistence continuously
accumulates record points until you
change one of
settings. Use for displaying points that
may occur outside the normal acquisition
envelope.
Variable pe
points for a specified time interval.
Each record point decays independently
according t
1. To set the variable persistence time,
select Display > Display Persistence >
Persistence Controls....
2. Click Variable, Persist Time, and then
use the multipurpose k nobs to set the
persistence time.
y > Display Persistence, and
ord replaces the previously
the acquisition display
rsistence accumulates record
o the time interval.
DPO7000 Series Quick Start User Manual37
Display a Wavefo
rm
Setting the Display Format
The instrument can display waveforms in two different formats. Choose the format that best suits your needs.
Select Display > Display Format.
Select Y-T format to show a signal
amplitude as it varies over time.
Select X-Y format to compare the
amplitude of Ch 1 (X) and Ch 2 ( Y),
Ch 3 (X) and Ch 4 (Y), Ref 1 (X) and
Ref 2 (Y), or Ref 3 (X) and Ref 4 (Y)
waveform records point by point.
Quick Tips
XY format i
XY format i
select XY format.
s particularly useful for studying phase relationships such as Lissajous Patterns.
s a dot-only display, although it can have persistence. The Vector style selection has no effect when you
Selecting the Waveform Interpolation
Select Di
and then select one of the following:
splay > Waveform Interpolation,
Sin(x)/x interpolation computes record
points using a curve fit between the
amples acquired.
actual s
nterpolation computes record
Linear i
points between actual acquired samples
by using a straight line fit.
38DPO7000 Series Quick Start User Manual
Quick Tips
Sin(x)/x interpolation is the default interpolation mode. It requires fewer actual sample points than linear interpolation to
accurately represent the waveform.
Adding Screen Text
1. Select Display > Screen Text.
2. Enter up to eight independent lines of
text.
Display a Wavefo
rm
3. Click Displ
and off.
4. Click Properties to open the Text
Properties control window for positioning
of the text
5. Click Clea
selected line.
ay to turn the text display on
on the display.
r to erase the entire text of the
Quick Tips
You c an click and drag screen text to reposition it on the screen.
DPO7000 Series Quick Start User Manual39
Display a Wavefo
rm
Setting the Graticule Style
To set the graticule style, select Display >
Graticule Style, and then select one of the
following sty
les:
Use for quick e
waveform parameters.
Use for full-screen
measurements w ith
cursors and automatic
readouts when
cross-hairs are not
needed.
Use for making quick
estimates of waveforms
while leaving more room
for automatic readouts
and other data.
Use with automatic
readouts and other
screen text when display
features are not needed.
stimate of
Use for NTSC video
signals.
Use for video signals
other than NTSC.
40DPO7000 Series Quick Start User Manual
Setting the Trigger Level Marker
Display a Wavefo
rm
1. Select Displa
2. Select one of t
Short display
side of the graticule.
Long displays a horizontal line
across the gratic u le.
Off turns off the trigger level marker.
y > Objects....
he following:
s a short arrow on the
Displaying the Date and Time
1. Select Display > Objects....
2. Toggle the display of the date and time
on the graticule. Use the Utilities menu
to set the date and time.
DPO7000 Series Quick Start User Manual41
Display a Wavefo
rm
Using the Color Palettes
Select Displa
FastAcq/WfmDB Palette, and then select
one of the following color schemes for the
waveform and g
Normal displ
levels for best overall viewing. The color
of each channel waveform matches the
color of the c
vertical knob.
Temperature Grading displays areas of
the waveform with the highest sample
density in r
lowest sample density appear in blue
shades.
Monochrome Green displays areas of
the wavefor
density in lighter green shades. The
areas of lowest sample density appear
in darker g
resembles analog oscilloscope displays.
y > Record View Palette or
raticule:
ays hues and lightness
orresponding front-panel
ed shades. The areas of
m with the highest sample
reen shades. It most closely
l Grading displays areas of
Spectra
the waveform with the highest sample
density in blue shades. The areas of
sample density appear in red
lowest
shades.
Monochrome Gray displays areas of
the waveform with the highest sample
ty in lighter gray shades. The
densi
areas of lowest sample density appear in
darker gray shades.
User displays the waveform in a
-defined color.
user
Quick Tips
Choose one of the color grading palettes in the Display > Colors control window to see different sample densities
represented in different colors.
There are two color palettes, one for Record View and one for FastAcq/WfmDB.
42DPO7000 Series Quick Start User Manual
Setting the Reference Colors
Select Display > Colors..., and then select
one of the following:
Default uses the default system color for
reference waveforms.
Inherit uses the same color for the
reference waveform as the original
waveform.
SettingMathColors
Select Display > Colors..., and then select
one of the following:
Display a Wavefo
rm
Default uses the default system color for
math waveforms.
Inherit uses the same color for the
math waveform as the lowest numbered
channel waveform the math function is
based on.
Quick Tips
The default color for math and reference waveforms are d ifferent for each waveform.
Using MultiView Zoom
Use the MultiView Zoom function to magnify a waveform vertically, horizontally, or in both dimensions. Z oomed waveforms
can also be aligned, locked, and automatically scrolled. Scale and Position affect only the display, not the actual waveform
data.
1. Push MultiView Zoom to split the screen
and add a zoom graticule.
DPO7000 Series Quick Start User Manual43
Display a Wavefo
2. Push HORIZ or VERT to select which
axis to magnify in the zoom graticule.
Use the multip
scale and position of the magnified
waveform.
rm
urpose knobs to adjust
3. To adjust the zoom graticule size, select
Zoom Grat
Vertical or Horiz/Acq menus.
4. To turn zoom off, push the front-panel
button.
icule Size from either the
Quick Tips
You can also use the Zoom Setup menu to change the graticule size of the zoomed waveform.
44DPO7000 Series Quick Start User Manual
Zooming in Multiple Areas
When you want to view and compare multiple areas of one record at the same time, use the following procedure.
1. Click and drag a box around the area of
the waveform that you want to zoom.
2. Select Zoom 1 On.
3. Click and drag a box around another
area of the waveform that you want to
zoom, and then select Zoom 2 On.
Display a Wavefo
rm
4. To adjust the zoomed area horizontally,
click the horizontal marker below the
Zoom box to select the zoomed area.
5. Use the multipurpose knobs to adjust
the horizontal position and factor of the
selected zoom area.
DPO7000 Series Quick Start User Manual45
Display a Wavefo
rm
6. To adjust the zo
select Vertical > Zoom Setup...,
click a vertical field, and then use the
multipurpose k
Position and Factor.
omed area vertically,
nobs to adjust the Vertical
Quick Tips
To clear the
You can tu r n
Push the Mu
To repositi
zoom area, click Position Factor Reset from the Zoom Setup control window.
each zoom display on and off from the Zoom Setup control window.
ltiView Zoom button to toggle all zoom displays on and off.
on the zoomed area horizontally, click and drag the horizontal marker at the bottom of the zoom box.
46DPO7000 Series Quick Start User Manual
Lock and Scroll Zoomed Waveforms
Display a Wavefo
rm
1. To use Lock and
Setup... from either the Vertical or
Horiz/Acq menu, and then select the
Lock and Scrol
2. To scroll a single zoomed area, select a
Zoom 1-4 check box, and then click an
Auto Scroll button.
Scroll select Zoom
l tab.
3. To scro l
l multiple zoomed areas
simultaneously, click Lock, and then
select the Zoom1-4 check boxes that
you want
Locking the zoomed areas locks in their
relative horizontal position. Changing
the hori
zoomed area changes them all.
to scroll through.
zontal position of one locked and
Quick Tips
When multiple zoom areas are selected but not locked, the zoom area with the highest number will autoscroll, while the
r zoom areas remain stationary.
othe
DPO7000 Series Quick Start User Manual47
Analyzing Wavef
orms
Analyzing Wav
Your instrument features cursors, automatic measurements, statistics, histograms, math, spectral analysis, and advanced
pass/fail tests to assist you in analyzing waveforms. This section contains concepts and procedures for analyzing waveforms.
Detailed information is available in the online help.
eforms
Taking Automatic Measurements
1. Select Measure > Measurement
Setup....
2. Select the channel, math or reference
waveform that you want to measure.
3. Using the tabs, select measurements in
five different categories.
48DPO7000 Series Quick Start User Manual
Analyzing Wavef
orms
4. To rem ov e the la
Clear.
5. To remove multiple measurements, click
and drag to select the measurements,
and then click C
You can also choose a measurement
for the selected waveform directly in
the Measure menu. (See page 50,
Automated Measurement Selections.)
st measurement, click
lear.
Quick T
DPO7000 Series Quick Start User Manual49
ips
In roll mode, measurements are not available until after you stop the acquisition.
Analyzing Wavef
orms
Automated Measurement Selections
The following tables list each automated measurement by category: amplitude, time, more, histogram, or communication.
(See page 48, Taking Automatic Measurements.)
Amplitude Measurements
MeasurementDescription
Amplitude
High
Low
RMSThe true Root Mean Square voltage over the entire waveform or gated region.
Max
Min
Pk-Pk
Cycle RMSThe true Root Mean Square voltage over the first cycle in the waveform or the first cycle in the
+OvershootThis is measured over the entire waveform or gated region and is expressed as:
-OvershootThis is measured over the entire waveform or gated region and is expressed as:
Mean
Cycle MeanThe arithmetic mean over the firstcycleinthewaveformorthefirst cycle in the gated region.
The high value less the low value measured over the entire waveform or gated region.
This value is used as 100% whenever high reference, mid reference, or low reference values
are needed, such as in fall time or rise time measurements. It can be calculated using either
the min/max or histogram method. The min/max method uses the maximum value found. The
histogram method uses the most common value found above the midpoint. This value is measured
over the entire waveform or gated region.
This value is used as 0% whenever high reference, mid reference, or low reference values are
needed, such as in fall time or rise time measurements. It can be calculated using either the
min/max or histogram method. The min/max method uses the minimum value found. The histogram
method uses the most common value found below the midpoint. This value is measured over
the entire waveform or gated region.
Typically the most positive peak voltage. Max is measured over the entire waveform or gated region.
Typically the most negative peak voltage. Min is measured over the entire waveform or gated region.
The absolute difference between the maximum and minimum amplitude in the entire waveform
or gated region.
gated region.
Positive Overshoot = ((Maximum - High) / Amplitude) x 100%.
Negative Overshoot = ((Low - Minimum) / Amplitude) x 100%.
The arithmetic mean over the entire waveform or gated region.
Time Measurements
MeasurementDescription
Rise Time
Fall Time
Pos Width
Neg Width
+ D uty CycThe ratio of the positive pulse width to the signal period expressed as a percentage. The duty cycle
50DPO7000 Series Quick Start User Manual
The time required for the leading edge of the first pulse in the waveform or gated region to rise from
the low reference value (default = 10%) to the high reference value (default = 90%) of the final value.
The time required for the falling edge of the first pulse in the waveform or gated region to fall from
the high reference value (default = 90%) to the low reference value (default = 10%) of the final value.
The distance (time) between the mid reference (default 50%) amplitude points of a positive pulse.
The measurement is made on the first pulse in the waveform or gated region.
The distance (time) between the mid reference (default 50%) amplitude points of a negative pulse.
The measurement is made on the first pulse in the waveform or gated region.
is measured on the first cycle in the waveform or gated region.
Analyzing Wavef
Time Measurements (cont.)
MeasurementDescription
- Duty CycThe ratio of the negative pulse width to the signal period expressed as a percentage. The duty
cycle is measured on the first cycle in the waveform or gated region.
Period
Freq
Delay
The time required to complete the first cycle in a waveform or gated region. Period is the reciprocal
of frequency and is measured in seconds.
The frequency of the fi rst cycle in a waveform or gated region. Frequency is the reciprocal of the
period; it is measured in Hertz (Hz) where one Hz is one cycle per second.
The time between the mid reference (default 50%) a mplitude point of two different waveforms.
More Measurements
MeasurementDescription
Area
Cycle AreaThe area over the first cycle in the waveform or the first cycle in the gated region expressed in
Phase
Burst Width
The area over the entire waveform or gated region in volt-seconds. Area measured above ground is
positive; area measured below ground is negative.
volt-seconds. The area above the common reference point is positive while the area below the
common reference point is negative.
The amount of time that one waveform leads or lags another waveform, expressed in degrees
where 360° comprises one waveform cycle.
The duration of a burst (a series of transient events) and is measured over the entire waveform
or gated region.
orms
Histogram Measurements
MeasurementDescription
Wfm CtDisplays the number of waveforms that have contributed to the histogram.
Hits in Box
Peak Hits
Median
Max
Min
Pk-Pk
Mean
Std DevMeasures the standard deviation (Root Mean Square (RMS) deviation) of all acquired points within
Mean ±1 Std DevDisplays the percentage of points in the histogram that are within one standard deviation of the
Displays the number of points in or o n the histogram box.
Displays the number of points in the largest bin of the histogram.
Displays the middle point of the histogram box. Half of all acquired points within or on the histogram
box are less than this value and half are greater than this value.
Displays the voltage of the highest nonzero bin in vertical histograms o r the time of the rightmost
nonzero bin in the horizontal histograms.
Displays the voltage of the lowest nonzero bin in vertical histograms or the time of the leftmost
nonzero bin in the horizontal histograms.
Displays the peak-to-peak value of the histogram. Vertical histograms display the voltage of the
highest nonzero bin minus the voltage of the lowest nonzero bin. Horizontal histograms display the
time of the rightmost nonzero bin minus the time of the leftmost nonzero bin.
Measures the average of all acquired points within or on the histogram box.
or on the histogram box.
histogram mean.
DPO7000 Series Quick Start User Manual51
Analyzing Wavef
Histogram Measurements (cont.)
MeasurementDescription
Mean ±2 Std DevDisplays the percentage of points i n the histogram that are within two standard deviations of the
Mean ±3 Std DevDisplays the percentage of points in the histogram that are within three standard deviations of
Communication Measurements
MeasurementDescription
Ext Ratio
Ext Ratio %The ratio of eye base to top expressed as a percentage. This measurement only works for
Ext Ratio (dB)The ratio of eye top to base expressed in decibels. This measurement only works for waveform
Eye Height
Eye Width
Eye TopThe top value used in the extinction ratio measurements.
Eye BaseThe base value used in the extinction ratio measurements.
Crossing %The eye crossing point expressed as a percentage of eye height.
Jitter P-P
Jitter RMSThe RMS value of the edge jitter in the current horizontal units.
Jitter 6 SigmaSix times the RMS value of the edge jitter in the current horizontal units.
Noise P-P
Noise RMSThe RMS value of the noise of the top or base of the signal as specified by you.
S/N RatioThe ratio of the signal amplitude to the noise of the top or base of the signal as specified by you.
Cyc DistortionThe peak-to-peak time variation of the first eye crossing measured at the Mid Ref as a percent of
Q-FactorThe ratio of eye size to noise.
orms
histogram mean.
the histogram mean.
The ratio of eye top to base. This measurement only works for waveform database or a reference
waveform saved in waveform database mode.
waveform database or a reference waveform saved in waveform database mode.
database or a reference waveform saved in waveform database mode.
The measurement of the eye height in volts.
The measurement of eye width in seconds.
The peak-to-peak value for the edge jitter in the current horizontal units.
The peak-to-peak value of the noise of the top or base of the signal as specified by you.
the eye period.
52DPO7000 Series Quick Start User Manual
Customizing an Automatic Measurement
You can customize automatic measurements by using gating, modifying measurement statistics, or adjusting the
measurement reference levels.
Gating
UseGatingtoconfine the measurement to a
certain portion of a waveform.
1. Select Measure > Gating > G ating ....
2. Position the gates by doing one of the
following:
Click Cursor to set the gated area to
the area between the cursors.
Click Zoom (1-4) to set the gated
area to the Zoom (1-4) graticule.
Analyzing Wavef
orms
DPO7000 Series Quick Start User Manual53
Analyzing Wavef
Statistics
orms
Statistics tu
measurements. Statistics characterize the
stability of the measurement.
1. To change the statistics that are
2. To rem o v e s t a
rn on automatically with
displayed, se
and then select Mean or All. (All includes
min, max, mean, standard deviation, and
population.
lect Measure > Statistics,
)
tistics select Off.
Reference Levels
Reference levels determine how time-related
measurements are taken.
1. Select Measure > Reference Levels....
2. Adjust the measurement reference levels
to different relative or absolute values.
High and Low reference are used
to calculate rise and fall times. The
default High reference is 90% and
Low reference is 10%.
Mid reference is primarily used for
measurements between edges such
as pulse widths. The default level is
50%.
Mid2 reference is used on the second
waveform specified in delay or phase
measurements. The default level is
50%.
Quick Tips
ure accurate noise values, be sure to set the signal type to Eye when measuring an Eye signal.
To ens
54DPO7000 Series Quick Start User Manual
Ta king Cursor Measurements
Use cursors to taking measurements on acquired data.
1. Push Cursors.
2. Select the Cursor Source.
3. Select a cursor type from one of the
following:
H Bars measure amplitude (typically
in volts or amperes)
V Bars measure horizontal
parameters (typically time)
Waveform and screen cursors
measure vertical and horizontal
parameters simultaneously.
Waveform cursors are attached to
the waveform, and screen cursors
float, unattached to the waveform.
Analyzing Wavef
orms
DPO7000 Series Quick Start User Manual55
Analyzing Wavef
orms
4. To take measure
waveforms, select Waveform, and then
select the waveform source for each
cursor.
5. Select Cursors > Cursor Position...,
and then use
adjust the cursor position.
6. Read cursor measurement results in the
display.
ments between two
the multipurpose knobs to
Quick Tips
Use the Cursor Track Mode to set the cursors to m ove in tandem. Use the Cursor Independent mode to move the
cursors separately.
If you use the zoom graticule, you can place a cursor directly on a specific waveform point to take precision
ements.
measur
You can
Vertic
56DPO7000 Series Quick Start User Manual
also move cursors by clicking and dragging them to a new position.
al cursors measure the time from the trigger point to the vertical cursor.
SettingUpaHistogram
You can display either a vertical (voltage) or horizontal (time) histogram. Use histogram measurements to get statistical
measurement data for a section of a waveform along one axis.
1. Click and drag the pointer across the
segment of the waveform that you want
the histogram to cover. For example,
make the box for a horizontal histogram
wider than it is tall .
2. Select Histogram Vertical or Histogram
Horizontal from the shortcut menu.
Analyzing Wavef
orms
3. View the histogram at the top (for
horizontal histograms) or the left edge
(for vertical histograms) of the g raticule.
DPO7000 Series Quick Start User Manual57
Analyzing Wavef
orms
4. To make adjustm
scale or the size and location of the
histogram box, select Measure >
Waveform Histo
the Histogram Setup control window.
5. You can also take automated
measurements on histogram data.
(See page 48, Ta kMeasurements.)
ents to the histogram
grams, and then use
ing Automatic
Quick Ti
ps
Use vertical histograms to measure signal noise and horizontal histograms to measure signal jitter.
Use the click and drag procedure to activate the shortcut menu to turn the histogram display o ff.
58DPO7000 Series Quick Start User Manual
Using Math Waveforms
Create math waveforms to support the analysis of your channel and reference waveforms. By combining and transforming
source waveforms and other data into math waveforms, you can derive the data view that your application requires.
Use the following procedure for predefined math equations.
1. Select Math > Math Setup....
2. Choose one of the predefined math
equations.
Analyzing Wavef
orms
Use the f
1. Select Math > Math Setup....
ollowing procedure to build an advanced math waveform expression.
DPO7000 Series Quick Start User Manual59
Analyzing Wavef
2. Click Editor.
orms
3. Bu ild your a
dvanced math waveform
expression using sources, operators,
constants, measurements, variables,
and functi
4. When you ha
ons.
ve defined the expression
to your satisfaction, click Apply.
5. To add your own filter, click the Filter
tab. Click Load.
60DPO7000 Series Quick Start User Manual
Analyzing Wavef
orms
6. Double click Ma
folder. Double click the filter you want to
use.
7. Built your math expression using the
filter you selected.
8. When you have defined the expression
to your satisfaction, click Apply.
th Arbitrary Filters
Quick Tips
Math definitions are not implemented if the sources are not valid.
Math waveforms can be created from channel, reference, math source waveforms and from measurements.
Measurements can be taken on math waveforms in the same way as on channel waveforms.
Math waveforms derive their horizontal scale and position from the sources in their math expressions. Adjusting these
ls for the source waveforms also adjusts the math waveform.
contro
You c a n
DPO7000 Series Quick Start User Manual61
magnify math waveforms using MultiView Zoom; u se the mouse for positioning the zoomed area.
Analyzing Wavef
orms
Using Spectral Analysis
Use the following procedure for predefined spectral math expressions. See the online help for more information.
1. Select Math > Math Setup....
2. Choose one of the predefined spectral
math expressions.
3. Click Basic.
4. Click Resolution BW or Frequency Span
and use the keypad or the multipurpose
knobs to
adjust the spectral display.
62DPO7000 Series Quick Start User Manual
Use the following procedure to build an advanced spectral math expression.
1. Select Math > Advanced Spectral....
2. Select the math waveform that you want
to define.
3. Click the type of spectral waveform
that you want to create. To redefine a
waveform, click Clear.
4. Select the source waveform.
Analyzing Wavef
orms
5. Adjust the spectral waveform, using the
controls in the Spectral Setup control
window and use the multipurpose knobs.
6. You can view time-domain and
frequency-domain waveforms
simultaneously.
Use Gating to select only a portion of
the time-domain waveform for spectral
analysis. (See page 53, Gating.)
DPO7000 Series Quick Start User Manual63
Analyzing Wavef
Quick Tips
Sources for spectral math waveforms must be channel or other math waveforms.
Use short record lengths for faster instrument response.
Use long record lengths to lower the noise relative to the signal and increase the frequency resolution.
Different window functions produce different filter response shapes in the spectrum and result in different resolution
bandwidths. See the online help for more information.
The resolution bandwidth (RBW) directly controls the gate width. Therefore, the time domain gate markers move
as you adjust the control.
You can display the linear magnitude of the real data or the imaginary data in the spectrum. This is useful if y ou process
the spectrum off line and transform it back into a time domain trace.
orms
Using M
Serial Communications Mask Testing (Option MTM) allows you to compare your signal to a predefined template or mask. For
the signal to pass the test, it must fall outside the segments defined by the mask. Generally, standards committees such as
ANSI define the masks. To perform mask testing do the following:
1. Select Masks > Source....
2. Select the signal source.
ask Testing
3. Click the Masks tab.
64DPO7000 Series Quick Start User Manual
4. Select the Type and standard.
5. Click Config to access the Mask
Configuration control window, where you
can adjust h
displayed and how Mask Autoset and
Autofitareconfigured.
6. Click Masks to return to the Mask Setup
control wi
ow masks and violations are
ndow.
Analyzing Wavef
orms
7. Click Lock Mask to Wfm On to track
mask changes in the horizontal or
vertical settings.
8. Toggle Hit Count On to highlight
violations during a mask test.
9. Click Autoset to automatically align the
waveform with the mask based on the
characteristics of the input signal.
10. Toggle Autofit On to automatically
reposition the waveform after each
acquisition to minimize h its.
DPO7000 Series Quick Start User Manual65
Analyzing Wavef
11. Click the Toleran c e tab, and then set the
tolerance.
Tole r a nc e s et t
the mask test harder to pass, settings
less than 0% make the test easier to
pass.
Use 0% if you want the mask as
specified in the standard. Changing the
percentage al
testing.
12. Select the Pass/Fail Setup tab, and then
set up the pass/fail parameters. (When
acquisitio
the # of Wfms label becomes Samples.)
13. Select your Pass/F ail Test Notifications.
orms
ings greater than 0% make
lowsyoutodomargin
n mode is Waveform Database,
66DPO7000 Series Quick Start User Manual
14. Select the polarity you want to test.
15. Toggle Pass/Fail Test On to start the
mask test.
16. Toggle Repeat On to run the mask test
continuously.
17. Click the Pass/Fail Results tab to view
the test results.
18. Click Pass/Fail Test On to start the mask
test.
19. Click Reset to reset the totals and clear
any violations.
Analyzing Wavef
orms
Quick Tip
If the signal is not within the mask, enable Autoset to center the waveform in the mask.
s
DPO7000 Series Quick Start User Manual67
MyScope
MyScope
MyScope allows you to create custom control windows that include only the controls that you use regularly. Instead of
switching between several control windows, put the controls you use into a custom control window.
This section contains procedures for creating and using MyScope control windows. Detailed information is available
in the online help.
Creating a New MyScope Control Window
1. Select MyScope > New Control
Window....
2. Click + to e
that can be added to your MyScope
control window are contained within
each cate
menu bar to help you find the controls
you normally use.
xpand a category. Controls
gory. The categories match the
68DPO7000 Series Quick Start User Manual
3. Click a control to preview it.
4. Double-click the control or click the + to
expand the control list. (If there is no +,
then the control cannot be customized
further.)
MyScope
DPO7000 Series Quick Start User Manual69
MyScope
5. Clear the check boxes to remove any
components that you do not want
included in th
e control.
6. Click and drag the control to your
MyScope control window. The control
will snap t
o the nearest grid location
when you release the mouse. You can
change the placement of the control in
your MySc
ope control window by clicking
and dragging.
70DPO7000 Series Quick Start User Manual
7. Click New Tab to add a tab to your
MyScope control window. You can have
up to eight tab
s.
MyScope
8. To rename a tab d
Click Rename Ta
Double-click
the new name.
9. Click User Pref... to specify user
preferences that are loaded with your
MyScope contr
10. To d el e te c on
Select a tab,
The tab and all of the controls are
deleted.
Select a control, and then click
Delete. Just
deleted.
11. Click Save, and then enter a name for
your MyScope control w indow, or use
the default
o one of the following:
b.
the tab, and then type
ol window.
trols do one of the following:
and then click Delete.
the s elected control is
name.
Quick Tips
To r ec o nfigure a control, click and drag it back to the preview window. Then select or clear the check boxes to include or
remove c
To chang
To delet
DPO7000 Series Quick Start User Manual71
omponents in the control.
e the tab order, click and drag a tab to a new location.
e a control, click and drag it to the upper half of the screen (off of your MyScope control window).
MyScope
Using MyScope Control Windows
To open a previously defined MyScope control window, do the following:
1. Select MyScope > Open Control
Window... or one of the five most
recently used MyScope windows.
2. Select the M
want to use, and then click Open.
To display the active MyScope control window, do the following:
1. Select MyScope > Current... or click
MyScop
MyScope control window remains active
even when it is not displayed.)
yScope control window you
e in the toolbar mode. (Your
72DPO7000 Series Quick Start User Manual
To edit a MyScope control window do the following:
MyScope
1. Select MyScop
Window....
2. Select the control window you want to
edit, and then click Open.
e>EditControl
Quick Tips
Some controls function differently in a MyScope control window than they do in the standard control window. For
details, see the online help.
You can copy MyScope control windows (.tcw files) to other DPO7000 Series instruments.
DPO7000 Series Quick Start User Manual73
Saving and Recal
ling Information
Saving and Rec
This section contains procedures for saving and recalling screen captures and setups, saving measurements, using the
clipboard, and printing on your instrument. Detailed information is available in the online help.
alling Information
Saving Screen Captures
1. Select File > Save or Save As > Screen
Capture....
2. Click Options..., if you want to setup the
Palette, View, Image, or Screen Capture
Format options; otherwise, skip to step 3.
74DPO7000 Series Quick Start User Manual
3. Select the location to save the screen
capture.
4. Type in a name for the screen capture,
or use the defau
a file type.
5. Click Save.
lt name, and then select
Saving and Recal
ling Information
Quick Tip
To quickly save multiple screen captures, select Set Front Panel Print Button to Save, and then click Save. You can
now save a
screen capture by pushing the front panel Print button.
Saving Waveforms
1. To save waveforms, select File > Save
or Save A
s > Waveform....
DPO7000 Series Quick Start User Manual75
Saving and Recal
2. Click Waveform.
3. Click Options..., if you want to specify
the Waveform Data Range, FastFrame
Data Range, Wav
Destination, Source, or Data Ordering;
otherwise, s kip to step 4.
ling Information
eform Detail, Data
4. Select the
5. You can eit
reference waveform in the instrument
memory or as a .wfm file in a Windows
directory
reference, select Ref 1–4. To save as a
.wfm file, select the location where you
want to sa
6. If you are
file name, or use the default.
7. Click Save.
Quick
Select Auto-increment file name to save numerous similar waveforms without having to retype the entire name.
To quickly save multiple waveforms, select Set Front Panel Print Button to Save, and then click Save. You can now
save a w aveform by pushing the front-panel Print button.
Source.
her save the waveform as a
. To save the waveform as a
ve the waveform.
saving as a .wfm file, type in a
Tips
76DPO7000 Series Quick Start User Manual
Recalling Waveforms
Saving and Recal
ling Information
1. Select File > R
2. Click Waveform.
3. Select the Destination of the waveform
you are recalling.
4. Select the waveform to recall.
5. Click Recall. Clicking Recall turns on the
reference waveform and activates the
Reference Waveform control window.
ecall....
6. Use the controls to adjust the Reference
waveform. You can also access the
Reference Waveform control window by
selecting File > Reference Waveform
Controls....
Quick Tip
You can save a number of different file types but you can only recall setup (*.set) files and waveform (*.wfm) files.
DPO7000 Series Quick Start User Manual77
Saving and Recal
ling Information
Saving Instrument Setups
1. Select File > S
Setup....
2. Click Setup.
3. Select the location where you want to
save the setup. You can either save the
setup to the instrument memory in one
of the ten setup storage locations or as
a.setfile in a Windows directory.
4. Type a file name or use the default name.
Use the pop-up keyboard to type a file
name for a setup saved to the instrument
memory.
ave or Save As >
5. Click Save.
Quick Tips
If the touch screen is enabled, use the pop-up keypad to label the setups for easy identification.
Use Auto-increment file name to save numerous similar files without having to retype the entire file name.
To quickly save multiple setups, select Set Front P anel Print Button to Save, and then click Save. You can now
save a setup by pushing the front panel Print button.
78DPO7000 Series Quick Start User Manual
Recalling Instrument Setups
Saving and Recal
ling Information
1. Select File > R
2. Click Setup.
3. Select the setup you want to recall. You
can recall a setup file from one of the ten
locations in the instrument memory or
from a Windows directory.
4. Click Recall.
ecall....
Quick Tip
You can recall any setup stored on disk and then save it in an internal setup storage location for quicker access.
DPO7000 Series Quick Start User Manual79
Saving and Recal
ling Information
Saving Measurements
1. Select File > Save or Save As >
Measurement....
2. Click Options..., if you want to
specify Displayed Measurements or
Measurement Format; otherwise, skip to
step 3.
3. Selectthelocationtosavethe
measurement.
4. Type in a name for the measurement,
and then select a file type.
5. Click Save.
80DPO7000 Series Quick Start User Manual
Copying Your Results to the Clipboard
Use the following procedure to set the output content and format for images, waveforms, or measurements to be copied
to the Microsoft clipboard.
1. Select Edit > Copy Setup....
2. Click the Images, Waveforms,or
Measurements tab, and then select the
desired options.
Saving and Recal
ling Information
DPO7000 Series Quick Start User Manual81
Saving and Recal
To copy images, waveforms, or measurements use the following procedure:
ling Information
1. Select the ite
m that you want to copy.
2. Select Edit>C
3. Press Ctrl + V to
Windows application.
opy or press Ctrl + C.
paste the item into a
82DPO7000 Series Quick Start User Manual
Printing a Hard Copy
Saving and Recal
ling Information
1. To print a hard
following:
Push PRINT.
Select File > Print. If necessary,
you can make changes to the page
orientation
box.
Your Print and Page Setup dialog boxes will
depend on the printer you are using.
2. Click Page Setup....
copy, do one of the
in the Page Setup dialog
3. Select either Screen-copy or Banner.
4. Select the printing parameters depending
on the type of printing.
DPO7000 Series Quick Start User Manual83
Run Application
Software
Run Applicati
The Optional Application Software CD contains free five-time trials of optional applicatio n software that you can install on your
instrument. These applications provide application-specific measurement solutions. Some examples are described below.
Additional packages may be available. Contact your Tektronix representative or visit our Web site at www.tektronix.com
for more information.
Use ET3 to perform 10/100/1000 Base-T Ethernet compliance testing.
Use USB to characterize USB2.0 signals including mask testing and parametric testing (S/W only).
Use PWR Power Measurement Software to quickly measure and analyze power dissipation in power supply switching
devices and magnetic components.
Use PTM Serial Protocol Trigger Software to trigger and decode 8 B/10 B data on high-speed serial or data protocols.
Decode is available on all models.
Use LSA Serial Analysis Software for CAN/LIN protocol triggering and analysis.
Use MTM Communication Mask Testing Software for mask compliance testing.
Follow the instructions provided with the
application software to install it. To run the
software, select Analyze and then select the
application.
on Software
84DPO7000 Series Quick Start User Manual
Application Examples
This section contains ways to use your instrument in common troubleshooting tasks and extending the use of your instrument.
Capturing Intermittent Anomalies
One of the most difficult tasks that design engineers face is tracking down the cause of intermittent failures. If you know what
type of anomal
However, when you do not know what you are looking for, it can be exceptionally tedious and time consuming, especially
given the low waveform capture rate on traditional digital storage oscilloscopes.
Digital Phosphor Oscilloscopes enabled by DPX technology have an exceptionally fast acquisition mode called FastAcq
that allows y
days to find the same event.
Use the following procedure to capture intermittent anomalies.
1. Probe the signal of interest. (Generally
this is one t
problems.)
y you are looking for, then it is easy to configure the oscilloscope advanced triggering capability to isolate it.
ou to find anomalies like these in a matter of seconds or minutes, where a regular DSO would take hours or
hat you think may be causing
Application Exa
mples
2. Push Autoset.
DPO7000 Series Quick Start User Manual85
Application Exa
3. Select Display > Display Persistence
4. Press FastAcq.
mples
>Infinite Persistence.Inthisexample,
we are looking
at a clock signal. After
observing the signal for 1–2 minutes,
but before you look for the problem
elsewhere, go
to step 4.
5. Find glitches, transients, or other random
anomalies that are present in the signal.
In this example, FastAcq revealed an
≈300 ns positive glitch after only a few
seconds.
86DPO7000 Series Quick Start User Manual
6. To trigger on the glitch that you identified
in step 5, select Glitch Setup....
7. Select the appropriate trigger values.
8. Click Level, and then set the level based
on what you foun
dinstep5.
Application Exa
mples
9. Click Width,a
nd then set the width
based on what you found in step 5.
10. Click E-m
ail on Trigger On. (See
page 93, Setting Up E-mail on Event.)
11. Push Single to trigger on a single glitch.
DPO7000 Series Quick Start User Manual87
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