Page 1 DPO4000 Series Digital Phosphor Oscilloscopes User Manual www.tektronix.com 071-1785-00...
Page 2 Copyright © Tektronix. All rights reserved. Licensed software products are owned by Tektronix or its subsidiaries or suppliers, and are protected by national copyright laws and international treaty provisions. Tektronix products are covered by U.S. and foreign patents, issued and pending. Information in this publication supersedes that in all previously published material.
Page 3 Warranty 4 Tektronix warrants that this product will be free from defects in materials and workmanship for a period of three (3) years 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.
Page 5: Table Of Contents
Connecting Your Oscilloscope to a Computer ..................DPO4000 Series User Manual...
Page 6 Starting and Stopping an Acquisition....................DPO4000 Series User Manual...
Page 7 Saving and Recalling Setups ..................... . . DPO4000 Series User Manual...
Page 8 Tracking Down Bus Anomalies ..................... Index DPO4000 Series User Manual...
Page 9: General Safety Summary
The inputs are not rated for connection to mains or Category II, III, or IV circuits. Connect the probe reference lead to earth ground only. Do not apply a potential to any terminal, including the common terminal, that exceeds the maximum rating of that terminal. DPO4000 Series User Manual...
Page 10 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. DPO4000 Series User Manual...
Page 11 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: DPO4000 Series User Manual...
Page 12: Environmental Considerations
The symbol shown below indicates that this product complies with the European Union’s requirements according to Directive 2002/96/EC on waste electrical and electronic equipment (WEEE). For information about recycling options, check the Support/Service section of the Tektronix Web site (www.tektronix.com). Mercury Notiﬁcation.
Page 13 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. DPO4000 Series User Manual...
Page 14: Preface
DPO4034 DPO4032 Key Features DPO4000 Series instruments can help you verify, debug, and characterize electronic designs. Key features include: 1 GHz, 500 MHz, and 350 MHz bandwidths 2 and 4 channel models Sample rates up to 5 GS/s on all channels...
Page 15 Preface OpenChoice documentation and analysis software Remote viewing with control (e*Scope and OpenChoice connectivity) TekVPI Versatile Probe Interface supports active, differential, and current probes for automatic scaling and units DPO4000 Series User Manual...
Page 16: Where To Find More Information
Speciﬁcations and Performance The DPO4000 Technical Reference (071-1843-XX) (PDF only) Veriﬁcation Programmer Commands The DPO4000 Programmer Manual (071-1845-XX) (PDF only) Analysis and Connectivity Tools The optional Getting Started with OpenChoice Solutions Manual (020-2514-XX) (includes a CD) DPO4000 Series User Manual...
Page 17: Conventions Used In This Manual
Use these documents Servicing and calibration The optional DPO4000 Service Manual (071-1844-XX) Installing and testing application The DPO4000 Series Application Module Installation Instructions manual (071-1833-XX) modules (11 languages) Conventions Used in This Manual The following icons are used throughout this manual.
Page 18 Preface DPO4000 Series User Manual...
Page 19: Installation
Before Installation Unpack the oscilloscope and check that you received all items listed as standard accessories. The following pages list recommended accessories and probes, instrument options, and upgrades. Check the Tektronix Web site (www.tektronix.com) for the most current information. Standard Accessories...
Page 20 Calibration certiﬁcate documenting traceability to national metrology institute(s), and ISO9001 quality system registration. One 500 MHz, 10x passive probe per channel P6139A Front Cover Hard plastic cover to help protect the instrument 200-4908-00 CompactFlash memory card Extra storage 156-9413-00 DPO4000 Series User Manual...
Page 21 Universal Euro (Option A1) 161-0104-06 United Kingdom (Option A2) 161-0104-07 Australia (Option A3) 161-0104-05 Switzerland (Option A5) 161-0167-00 Japan (Option A6) 161-A005-00 China (Option A10) 161-0306-00 India (Option A11) 161-0400-00 —— No power cord or AC adapter (Option A99) DPO4000 Series User Manual...
Page 22 Rackmount kit Adds rackmount brackets RM4000 Soft transit case Case for carrying instrument AC4000 Hard transit case Traveling case, which requires use of the soft HCTEK4321 transit case (AC4000) DPO4000 Series User Manual...
Page 23 DPO4000 Service manual Service information 071-1844-XX DPO4000 Module Installation Instructions Manual 071-1833-XX The DPO4000 oscilloscope works with multiple optional probes. (See page 10, Connecting Probes.) Check the Tektronix Web site (www.tektronix.com) for the most current information. DPO4000 Series User Manual...
Page 24: Operating Considerations
Depth, from feet to front of knobs: 137 mm (5.4 in) Depth, from feet to front of front cover: 145 mm (5.7 in) Clearance: 51 mm (2 in) Temperature: Operating: +0 °C to +50 °C Nonoperating: -20 °C to +60 °C DPO4000 Series User Manual...
Page 25 For steady-state sinusoidal waveforms, derate at 20 dB/decade above 200 kHz to 13 V at 3 MHz and above. Acquisition System: 50Ω The maximum input voltage at the BNC, between center conductor and shield is 5 V , with peaks ≤ ±20 V (DF ≤ 6.25%) DPO4000 Series User Manual...
Page 26 15 V DC; CAT I (250 V impulse) peak Temperature: Operating: -15 °C to +65 °C ( +5 °F to +149 °F) Nonoperating: -62 °C to +85 °C ( -80 °F to +185 °F) Altitude: ≤ 2,000 meters DPO4000 Series User Manual...
Page 27 2. Use a soft cloth dampened with water to clean the oscilloscope. Use an aqueous solution of 75% isopropyl alcohol for more efﬁcient cleaning. CAUTION. To avoid damage to the surface of the oscilloscope or probes, do not use any abrasive or chemical cleaning agents. DPO4000 Series User Manual...
Page 28: Connecting Probes
Installation Connecting Probes The DPO4000 oscilloscope supports probes with the following: 1. Tektronix Versatile Probe Interface (TekVPI) These probes support two-way communication with the oscilloscope through on-screen menus and remotely through programmable support. The remote control is useful in applications like ATE where you want the system to preset probe parameters.
Page 29: Powering On The Oscilloscope
Installation For more information on the many probes available for use with DPO4000 oscilloscopes, refer to www.tektronix.com. Powering On the Oscilloscope Ground the Oscilloscope and Yourself Before pushing the power switch, connect the oscilloscope to an electrically neutral reference point, such as earth ground. Do this by plugging the three-pronged power cord into an outlet grounded to earth ground.
Page 30 If you are working with static sensitive components, ground yourself. Static electricity that builds up on your body can damage static-sensitive components. Wearing a grounding strap safely sends static charges on your body to earth ground. DPO4000 Series User Manual...
Page 31 Installation To connect the power cord and power on the oscilloscope: DPO4000 Series User Manual...
Page 32: Powering Off The Oscilloscope
Installation Powering Off the Oscilloscope To power off the oscilloscope and remove the power cord: DPO4000 Series User Manual...
Page 33: Functional Check
Installation Functional Check Perform this quick functional check to verify that your oscilloscope is operating correctly. 1. Connect the oscilloscope power cable as described above. 2. Power on the oscilloscope. DPO4000 Series User Manual...
Page 34 Installation 3. Connect the oscilloscope P6139A probe tip and reference lead to the PROBE COMP connectors. 4. Press Default Setup. DPO4000 Series User Manual...
Page 35: Compensating The Probe
Whenever you attach a passive voltage probe for the ﬁrst time to any input channel, compensate the probe to match it to the corresponding oscilloscope input channel. To properly compensate your passive probe: 1. Follow the steps for the functional check. (See page 15, Functional Check.) DPO4000 Series User Manual...
Page 36 Installation 2. Check the shape of the displayed waveform to determine if your probe is Properly compensated Under compensated Over compensated properly compensated. 3. If necessary, adjust your probe. Repeat as needed. DPO4000 Series User Manual...
Page 37: Installing An Application Module
To avoid damage to the oscilloscope or application module, observe ESD precautions. (See page 11, Powering On the Oscilloscope.) Turn off the oscilloscope power while removing or adding an application module. (See page 14, Powering Off the Oscilloscope.) DPO4000 Series User Manual...
Page 38: Changing The User Interface Language
Refer to the DPO4000 Series Application Module Installation Instructions that came with your application module for instructions on installing and testing an application module.
Page 39 4. Push the side-bezel button corresponding Language to the desired language. Choose among: English, French, Italian, German, Spanish, Japanese, Brazilian Portuguese, Simpliﬁed Chinese, Traditional Chinese, Korean, and Russian. English Francais Deutsch Italiano -more- 1 of 3 DPO4000 Series User Manual...
Page 40 5. If you choose to use English, be sure that the plastic front-panel overlay is removed. If you choose a language other than English, place the plastic overlay for the language that you desire over the front panel to display labels in that language. DPO4000 Series User Manual...
Page 41: Changing The Date And Time
To set the internal clock with the current date and time: 1. Push Utility. 2. Push System repeatedly until you select Conﬁg Conﬁg from the pop-up menu. 3. Push Set Date & Time. Set Date & Language TekSecure Version Time English Erase System Memory Conﬁg DPO4000 Series User Manual...
Page 42 (a and b) to set the time and date values. Display Date/Time ON OFF Hour: 4 Min: 1 Month: July Day: 19 Year: 2005 OK Enter Date & Time 5. Push OK Enter Date & Time. OK Enter Date & Time DPO4000 Series User Manual...
Page 43: Signal Path Compensation
5 mV/division or less. Failure to do so may result in the instrument not meeting warranted performance levels at those volts/div settings. To compensate the signal path: 1. Warm up the oscilloscope for at least 20 minutes. Remove all input signals (probes and cables) from channel inputs. Input signals with AC components adversely affect SPC. DPO4000 Series User Manual...
Page 44 4. Push Signal Path from the lower-bezel menu. Signal Path Factory Pass Pass System Calibration 5. Push OK Compensate Signal path from the OK Com- pensate resulting side-bezel menu. Signal Path The calibration will take approximately 10 minutes to complete. DPO4000 Series User Manual...
Page 45 7. Service personnel use the factory calibration functions to calibrate the internal voltage references of the oscilloscope using external sources. Refer to your Tektronix ﬁeld ofﬁce or representative for assistance with factory calibration. NOTE. Signal Path Compensation does not include calibration to the probe tip. (See page 17, Compensating the Probe.)
Page 46: Upgrading Firmware
To upgrade the ﬁrmware of the oscilloscope: 1. Open up a Web browser and go to www.tektronix.com. Proceed to the software ﬁnder. Download the latest ﬁrmware for your DPO4000 series oscilloscope onto a USB storage device. DPO4000 Series User Manual...
Page 47 Installation 2. Power off your DPO4000. DPO4000 Series User Manual...
Page 48 Installation 3. Insert the USB storage device into the front-panel USB port on your DPO4000. DPO4000 Series User Manual...
Page 49 If the instrument does not install the ﬁrmware, rerun the procedure. It the problem continues, contact qualiﬁed service personnel. CAUTION. Do not power off the oscilloscope or remove the USB storage device until the oscilloscope ﬁnishes installing the ﬁrmware. DPO4000 Series User Manual...
Page 50 Installation 5. Power off the DPO4000 and remove the USB storage device. DPO4000 Series User Manual...
Page 51 Installation 6. Power on the DPO4000. 7. Push Utility. DPO4000 Series User Manual...
Page 52: Connecting Your Oscilloscope To A Computer
PC, such as Microsoft Excel, National Instruments LabVIEW. or a program of your own creation. You can use a common communications protocol, such as USB, Ethernet, or GPIB to connect the computer to the oscilloscope. DPO4000 Series User Manual...
Page 53 To set up OpenChoice communications between your oscilloscope and a computer: 1. Load the TekVISA drivers on your computer. Find these on the OpenChoice Desktop CD or at the Tektronix software ﬁnder Web page (www.tektronix.com). When done, the TekVISA icon appears in the Windows System Tray.
Page 54 USB or Ethernet cable. To communicate between the DPO4000 and a GPIB system, connect the oscilloscope to the TEK-USB-488 GPIB-to-USB Adapter with a USB cable. Then connect the adapter to your GPIB system with a GPIB cable. DPO4000 Series User Manual...
Page 55 Installation 3. Push Utility. 4. Push System repeatedly to select I/O. 5. To use Ethernet, push Ethernet Network Ethernet GPIB Network Settings. Enabled System Settings DPO4000 Series User Manual...
Page 56 Test Connection 6. If you are using GPIB, push GPIB. 7. Enter the GPIB address on the side-bezel Talk/Listen Address menu, using multipurpose knob a. This will set the GPIB address on an attached TEK-USB-488 Adapter. DPO4000 Series User Manual...
Page 57 OpenChoice Desktop. The rear-panel USB 2.0 device port is the correct USB port for computer connectivity. Use the rear- and front-panel USB 2.0 host ports to connect your oscilloscope to storage devices and printers. DPO4000 Series User Manual...
Page 58 Installation Using e*Scope e*Scope lets you access any Internet-connected DPO4000 Series Oscilloscope from a browser on your workstation, PC, or laptop computer. No matter where you are, your DPO4000 is as close as the nearest browser. To set up e*Scope communications between your oscilloscope and a Web browser running on a remote computer: 1.
Page 59 Installation 3. Push System repeatedly to select I/O. 4. Push Ethernet Network Settings. GPIB Ethernet Network System Settings DPO4000 Series User Manual...
Page 60 On Off Test Connection 6. Start your browser on your remote computer. In the browser address line, enter the IP address or, if DHCP is set to On in the oscilloscope, simply enter the instrument name. DPO4000 Series User Manual...
Page 61 7. You should now see the e*Scope screen, with a copy of the oscilloscope display, on your Web browser. If e*Scope does not work, rerun the procedure. If it still does not work, contact qualiﬁed service personnel. DPO4000 Series User Manual...
Page 62 Installation DPO4000 Series User Manual...
Page 63: Get Acquainted With The Instrument
Get Acquainted with the Instrument Get Acquainted with the Instrument Front-Panel Menus and Controls The front panel has buttons and controls for the functions that you use most often. Use the menu buttons to access more specialized functions. DPO4000 Series User Manual...
Page 64: Using The Menu System
Get Acquainted with the Instrument Using the Menu System To use the menu system: 1. Push a front-panel menu button to display the menu that you want to use. DPO4000 Series User Manual...
Page 65 3. Push a side-bezel button to choose a side-bezel menu item. If the menu item contains more than one choice, push the side-bezel button repeatedly to cycle through the choices. DPO4000 Series User Manual...
Page 66 5. Certain menu choices require you to set a numerical value to complete the setup. Use the upper and lower multipurpose knobs a and b to adjust values. 6. Push Fine to turn off or on the ability to make smaller adjustments. DPO4000 Series User Manual...
Page 67: Using The Menu Buttons
3. Test. Push to activate advanced or application-speciﬁc testing features. 4. Acquire. Push to set the acquisition mode and adjust the record length. 5. Autoset. Push to perform an automatic setup of oscilloscope settings. 6. Trigger Menu. Push to specify trigger settings. DPO4000 Series User Manual...
Page 68 CompactFlash card, or a USB storage device. 10. Channel 1,2,3, or 4. Push to set vertical parameters for input waveforms and to display or remove the corresponding waveform from the display. DPO4000 Series User Manual...
Page 69 12. R. Push to manage reference waveforms, including the display or removal of each reference waveform from the display. 13. M. Push to manage the math waveform, including the display or removal of the math waveform from the display. DPO4000 Series User Manual...
Page 70 Push again to turn on the two vertical and two horizontal cursors. Push again to turn off all cursors. When the cursors are on, you can turn the multipurpose knobs to control their position. DPO4000 Series User Manual...
Page 71 5. Waveform Intensity. Push to enable multipurpose knob a to control waveform display intensity and knob b to control graticule intensity. DPO4000 Series User Manual...
Page 72 Turning it counterclockwise zooms out. 10. Play-pause button. Push to start or stop the automatic panning of a waveform. Control the speed and direction with the pan knob. 11. ← Prev. Push to jump to the previous waveform mark. DPO4000 Series User Manual...
Page 73 13. → Next. Push to jump to the next waveform mark. 14. Horizontal Position. Turn to adjust the trigger point location relative to the acquired waveforms. Push Fine to make smaller adjustments. 15. Horizontal Scale. Turn to adjust the horizontal scale (time/division). DPO4000 Series User Manual...
Page 74 19. Trigger Level. Turn to adjust the trigger level. 20. Set to 50%. Push to set the trigger level to the midpoint of the waveform. 21. Force Trig. Push to force an immediate trigger event. DPO4000 Series User Manual...
Page 75 24. Vertical Scale. Turn to adjust the vertical scale factor of the corresponding waveform (volts/division). 25. Print. Push to initiate a hard copy using the printer selected in the Utility menu. 26. Power switch. Push to power on or off the instrument. DPO4000 Series User Manual...
Page 76 Save / Recall menu. 31. Default Setup. Push to perform an immediate restore of the oscilloscope to the default settings. 32. Menu Off. Push to clear a displayed menu from the screen. DPO4000 Series User Manual...
Page 77: Identifying Items In The Display
Identifying Items in the Display The items shown to the right may appear in the display. Not all of these items are visible at any given time. Some readouts move outside the graticule area when menus are turned off. DPO4000 Series User Manual...
Page 78 Roll: In roll mode (40 ms/div or slower) PreVu: In this state, the oscilloscope is stopped or between triggers. You can change the horizontal or vertical position or scale to see approximately what the next acquisition will look like. DPO4000 Series User Manual...
Page 79 3. The expansion point icon (an orange triangle) shows the point that the horizontal scale expands and compresses around. 4. The waveform record view shows the trigger location relative to the waveform record. The line color corresponds to the selected waveform color. DPO4000 Series User Manual...
Page 80 Trig’d: Triggered Auto: Acquiring untriggered signal PrTrig: Acquiring pretrigger data Trig?: Waiting for trigger 6. The cursor readout shows time, amplitude, and delta (∆) values for each cursor. For FFT measurements, it shows frequency and magnitude. DPO4000 Series User Manual...
Page 81 9. The top line of the record length/sampling rate readout shows the sampling rate (adjust with the Horizontal Scale knob). The bottom line shows the record length (adjust with the Acquire menu). DPO4000 Series User Manual...
Page 82 12. The channel readout shows the channel scale factor (per division), coupling, and invert status. Adjust with the Vertical Scale knob and the channel 1, 2, 3, or 4 menus. DPO4000 Series User Manual...
Page 83 14. The waveform baseline indicator shows the zero-volt level of a waveform (ignoring the effect of offset). The icon colors correspond to the waveform colors. DPO4000 Series User Manual...
Page 84: Front-Panel Connectors
1 MΩ ± 1% in parallel with 13 pF ±2 pF. 3. PROBE COMP. Square wave signal source to compensate probes. Output voltage: 0 – 2.5V, amplitude ± 1% behind 1k Ω ±2%. Frequency: 1 kHz. 4. Ground. 5. Application Module Slots. DPO4000 Series User Manual...
Page 85: Side-Panel Connector
Get Acquainted with the Instrument Side-Panel Connector 1. Ground strap connector. This is a receptacle for a grounding strap. DPO4000 Series User Manual...
Page 86: Rear-Panel Connectors
USBTMC or GPIB with a TEK-USB-488 Adapter. The USBTMC protocol allows USB devices to communicate using IEEE488 style messages. This lets you run your GPIB software applications on USB hardware. DPO4000 Series User Manual...
Page 87 5. Host. Use the USB 2.0 Full speed host ports (two) to take advantage of USB mass storage devices and printers. 6. Power input. Attach to an AC power line with integral safety ground. (See page 6, Operating Considerations.) DPO4000 Series User Manual...
Page 88: Acquire The Signal
This section describes concepts of and procedures for setting up the oscilloscope to acquire the signal as you want it to. Setting Up Signal Input Use front-panel buttons to set up your instrument to acquire the signal. 1. Connect the P6139A or VPI probe to the input signal source. DPO4000 Series User Manual...
Page 89 2. Select the input channel by pushing the front-panel buttons. NOTE. If you are using a probe that does not supply probe encoding (not a P6139A nor a VPI probe), set the attenuation (probe factor) on the oscilloscope side-bezel menu. 3. Push Autoset. DPO4000 Series User Manual...
Page 90 The horizontal scale determines the size of the acquisition window relative to the waveform. You can scale the window to contain a waveform edge, a cycle, several cycles, or thousands of cycles. DPO4000 Series User Manual...
Page 91: Using The Default Setup
2. If you change your mind, push Undo Default Undo Default Setup to undo the last default setup. Setup Quick Tip The DPO4000 Technical Reference describes the default setup settings in detail. This manual is available on the accompanying CD or at www.tektronix.com. DPO4000 Series User Manual...
Page 92: Using Autoset
1. Connect the probe, and then select the input channel. (See page 70, Setting Up Signal Input.) 2. Push Autoset to execute an Autoset. 3. If desired, push Autoset Undo to undo the Undo Autoset last Autoset. DPO4000 Series User Manual...
Page 93: Acquisition Concepts
Sampling Process Acquisition is the process of sampling an analog signal, converting it into digital data, and assembling it into a waveform record, which is then stored in acquisition memory. Input signal Sampled points Digital values DPO4000 Series User Manual...
Page 94 Acquire the Signal Real-time Sampling DPO4000 series oscilloscopes use real-time sampling. In real-time sampling, the instrument digitizes all of the points it acquires using a Record points single trigger event. Sampling rate DPO4000 Series User Manual...
Page 95: Waveform Record
ﬁll a waveform record. Set this by pushing the Acquire button and using the resulting lower-bezel menu. Trigger point: The zero time reference in a waveform record. It is shown on the screen by an orange T. DPO4000 Series User Manual...
Page 96: How The Acquisition Modes Work
Expansion point: The point that the horizontal scale expands and contracts around. It is shown by an orange triangle. How the Acquisition Modes Work Sample mode retains the ﬁrst sampled point from each acquisition interval. Sample is the default mode. DPO4000 Series User Manual...
Page 97 Envelope uses Peak Detect for each individual acquisition. Average mode calculates the average value for each record point over a user-speciﬁed number of acquisitions. Average uses Sample mode for each individual acquisition. Use average mode to reduce random noise. DPO4000 Series User Manual...
Page 98: Changing The Acquisition Mode And Record Length
Acquire the Signal Changing the Acquisition Mode and Record Length Use this procedure to change the acquisition mode. 1. Push Acquire. 2. Push Mode. Mode Record Reset Waveform Length Horizontal Display Average Position DPO4000 Series User Manual...
Page 99 Peak Detect and High Res require more than one sample point per sample interval. If there Peak is only one sample point, these two modes will Detect appear the same as sample mode. Hi Res Envelope Average DPO4000 Series User Manual...
Page 100 5. Push Record Length. 6. Push the side-bezel menu, record length 1000 points button. Choose between: 1000, 10 k, 100 k, 1 M, and 10 M points. DPO4000 Series User Manual...
Page 101: Using Roll Mode
Switching to Envelope or Average acquisition mode, using math waveforms, or switching to normal trigger will disable Roll mode. Roll mode is disabled when you set the horizontal scale to 20 ms per division or faster. Push Run/Stop to halt Roll mode. DPO4000 Series User Manual...
Page 102: Deﬁning A Serial Bus
You can separately use B1 and B2 to view two different buses. 2. Push Trigger Menu and enter trigger parameters. (See page 98, Choosing a Trigger.) You can display bus information without triggering on the bus signal. DPO4000 Series User Manual...
Page 103 To set up bus parameters: 1. Push B1 or B2 to bring up the lower-bezel bus menu. 2. Push Bus as many times as needed to select the desired bus (I C, SPI, or CAN) from the pop-up menu. DPO4000 Series User Manual...
Page 104 2 to supply the SDA signal. You can assign any channel to a predeﬁned bus signal. For all serial bus sources, use channel 1 to channel 4. Do not use the Aux In input. 4. Push Thresholds. Thresholds Display As Deﬁne Decode Inputs DPO4000 Series User Manual...
Page 105 Active High means when a signal is greater than the threshold value, it is considered a logical 1. Active Low means when the signal is lower than the threshold value, it is considered a logical 1. DPO4000 Series User Manual...
Page 106 Waveforms waveforms. Push Bus and Waveforms to display both views of the signal. Bus and Waveforms Push Event Table On to display a list of Event Table On Off packets in the bus. Sample bus information: DPO4000 Series User Manual...
Page 107 8. Push Bus Decode and the desired side-bezel menu choice to display the bus data in hexadecimal or binary format. 9. Turn multipurpose knob a to move the bus display up or down on the screen. DPO4000 Series User Manual...
Page 108 You can also trigger on packet level information on your serial bus. (See page 102, Triggering on Buses.) NOTE. To acquire signals from two buses simultaneously, use this procedure once to deﬁne the parameters of the B1 bus and again to deﬁne the B2 bus. DPO4000 Series User Manual...
Page 109: Trigger Setup And Run
After a trigger is recognized, the instrument will not accept another trigger until the acquisition is complete and the holdoff time has expired. DPO4000 Series User Manual...
Page 110: Trigger Modes
If a trigger event is not detected before the timer times out, the instrument forces a trigger. The length of time it waits for a trigger event depends on the time base setting. DPO4000 Series User Manual...
Page 111: Trigger Holdoff
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 Holdoffs follows each acquisition. DPO4000 Series User Manual...
Page 112: Trigger Coupling
Rejection, and Noise Rejection. All other trigger types use DC coupling only. Horizontal Position Use horizontal position to acquire waveform detail in a region that is separated from the trigger location by a signiﬁcant interval of time. DPO4000 Series User Manual...
Page 113 Trigger Setup and Run 1. Adjust the position (delay) time by rotating the Horizontal Position knob. 2. Turn horizontal SCALE to acquire the detail that you need around the position (delay) expansion point. DPO4000 Series User Manual...
Page 114: Slope And Level
The level control determines where on that edge the trigger point occurs. The DPO4000 provides a long horizontal bar or bars across the graticule to temporarily show the trigger level. DPO4000 Series User Manual...
Page 115 B trigger conditions are met. A and B triggers can (and typically do) have separate sources. The B trigger condition can be based on a time delay or a speciﬁed number of events. (See page 107, Using A (Main) and B (Delayed) Triggers.) DPO4000 Series User Manual...
Page 116: Choosing A Trigger
2. Push Type repeatedly to select the trigger Edge type to use. Pulse Width NOTE. The bus trigger requires use of the DPO4EMBD or the DPO4AUTO application Runt module. Logic Setup & Hold Rise/Fall Time Video DPO4000 Series User Manual...
Page 117: Selecting Triggers
Edge triggers are the simplest and most commonly used trigger type, with both analog and digital signals. An edge trigger event occurs when the trigger source passes through a speciﬁed voltage level in the speciﬁed direction. DPO4000 Series User Manual...
Page 118 Trigger when logic inputs cause the selected function to become True or False. You can also specify that the logic conditions be satisﬁed for a speciﬁc amount of time before triggering. DPO4000 Series User Manual...
Page 119 Specify pulse edges as positive or negative or either. Video Trigger on speciﬁed ﬁelds or lines of a composite video signal. Only composite signal formats are supported. Trigger on NTSC, PAL, or SECAM. Works with Macrovision signals. DPO4000 Series User Manual...
Page 120: Triggering On Buses
(as digital and symbolic waveforms). To set up the bus trigger: 1. If you have not already deﬁned your bus using the front-panel B1 or B2 buttons, do so now. (See page 84, Deﬁning a Serial Bus.) DPO4000 Series User Manual...
Page 121 Trigger Setup and Run 2. Push Trigger Menu. 3. Push and keep pushing the Type button of the Source Bus Trigger On Address Direction Mode lower-bezel menu until you select Bus. B1 (I2C) Address Write Auto Type & Holdoff DPO4000 Series User Manual...
Page 122 SS Active, MOSI, MISO, or MOSI & MISO. If you are using the CAN bus trigger, you can trigger on Start of Frame, Type of Frame, Identiﬁer, Data, Id & Data, End of Frame, and Missing Ack. DPO4000 Series User Manual...
Page 123 Address button. Enter the address parameters of interest with multipurpose knobs a and b. Then push the lower-bezel menu Direction button to enter the direction of interest. Choices are: Read, Write, and Read or Write. DPO4000 Series User Manual...
Page 124 Set the number of bytes to match the number of bytes of interest. Use the data qualiﬁer to perform: =, !=, <, >, >=, and <= operations. Triggering on identiﬁer and data always matches the identiﬁer and data selected by the user, with the data starting at the ﬁrst byte. No rolling window is used. DPO4000 Series User Manual...
Page 125: Checking Trigger Status
Combine an edge A Event (Main) trigger 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. To use the B trigger: 1. Push Trigger Menu. DPO4000 Series User Manual...
Page 126 A trigger is set to edge trigger. 4. Set the B trigger parameters as deﬁned in the B Trigger B Trigger Source Coupling Slope Level Conﬁgure A Trigger After A 0.00V B trigger lower-bezel and side-bezel menu Time items. DPO4000 Series User Manual...
Page 127 Trigger Setup and Run Trigger on B Event The A trigger arms the instrument. Posttrigger acquisition starts on the nth B event. DPO4000 Series User Manual...
Page 128 A trigger alone or the A and B triggers together, you can also use horizontal position to delay the acquisition by an additional amount. When using the B trigger, the A and B trigger types can only be Edge. DPO4000 Series User Manual...
Page 129: Starting And Stopping An Acquisition
After you have deﬁned the acquisition and trigger parameters, start the acquisition with Run/Stop or Single. Push Run/Stop to start the acquisition. Push it again to stop the acquisition. Push Single to take a single acquisition. Single sets the trigger mode to Normal for the single acquisition. DPO4000 Series User Manual...
Page 130: Display Waveform Data
You can use the channel as a trigger source whether or not it is displayed. Setting the Display Style and Persistence 1. To set the display style, push Acquire. DPO4000 Series User Manual...
Page 131 Display Waveform Data 2. Push Waveform Display. Mode Record Reset Waveform Display Length Horizontal Sample Position DPO4000 Series User Manual...
Page 132 5. Push Set to Auto to have the oscilloscope Set to Auto automatically determine a persistence time for you. 6. Push Clear Persistence to reset the Clear Per- sistence persistence information. DPO4000 Series User Manual...
Page 133: Setting Waveform And Graticule Intensity
Inﬁnite persistence continuously accumulates record points until you change one of the acquisition display settings. Use inﬁnite persistence for displaying unique signal anomalies, such as glitches. Setting Waveform and Graticule Intensity 1. Push the front-panel Intensity button. This will bring up the intensity readout on the display. DPO4000 Series User Manual...
Page 134 2. Rotate multipurpose knob a to select the desired waveform intensity. 3. Rotate multipurpose knob b to select the desired intensity for the graticule and text. 4. Push Intensity again to clear the intensity readout from the display. DPO4000 Series User Manual...
Page 135: Setting The Graticule Style
Setting the Graticule Style 1. To set the graticule style, push Utility. 2. Push System repeatedly until you select Display Display from the pop-up menu. 3. Push Graticule from the lower-bezel menu. Backlight Graticule Intensity Full System High Display DPO4000 Series User Manual...
Page 136: Setting The Lcd Backlight
Use the Frame graticule with automatic readouts and other screen text when display features are not needed. Setting the LCD Backlight 1. Push Utility. DPO4000 Series User Manual...
Page 137 2. Push System repeatedly until you select Display Display. 3. Push Backlight Intensity. Backlight Graticule Intensity Full System High Display 4. Select the intensity level from the resulting Backlight Intensity side-bezel menu. Choices are: High, Medium, and Low. High Medium DPO4000 Series User Manual...
Page 138: Scaling And Positioning A Waveform
Display Waveform Data Scaling and Positioning a Waveform Use the horizontal controls to adjust the time base, adjust the trigger point, and to examine waveform details more closely. Original waveform Scaled horizontally Positioned horizontally DPO4000 Series User Manual...
Page 139 RUN button. The oscilloscope uses the new settings for the next acquisition. You may see a clipped waveform if the original acquisition went off the screen. The math waveform, cursors, and automatic measurements remain active and valid when using preview. DPO4000 Series User Manual...
Page 140: Setting Input Parameters
The vertical menu only affects the selected waveform. Pushing a channel button will also select or cancel that waveform selection. 2. Push Coupling. Coupling Invert Bandwidth Position Probe Fine Scale Offset Setup Full 100mV/div 0.00V 0.00 div DPO4000 Series User Manual...
Page 141 Set the input impedance (termination) to 50 Ω or 1 MΩ if using DC or Gnd coupling. Input impedance is automatically set to 1 MΩ when using AC coupling. For more information on input impedance, see Quick Tips below. DPO4000 Series User Manual...
Page 142 Select Full to set the bandwidth to the full oscilloscope bandwidth. Select 250 MHz to set the bandwidth to 250 MHz. Select 20 MHz to set the bandwidth to 20 MHz. DPO4000 Series User Manual...
Page 143 Full 100mV/div 0.00V 0.00 div make vertical offset adjustments. On the side-bezel menu, choose Set to 0 V to set the vertical offset to 0 V. For more information on offset, see the Quick Tips below. DPO4000 Series User Manual...
Page 144 On the side-bezel menu, choose Set to 0 divs to set the vertical position to the center of the screen. For more information on vertical position, see the Quick Tips below. DPO4000 Series User Manual...
Page 145 This shifts acquisition and display of the waveform left or right, relative to the trigger time. Use this to compensate for differences in cable lengths or probe types. Select Attenuation to choose the probe attenuation. DPO4000 Series User Manual...
Page 146 50 Ω Protection. If you select 50 Ω termination, the maximum vertical scale factor is limited to 1 V/div. If you apply excessive input voltage, the oscilloscope automatically switches to 1 M Ω termination to protect the internal 50 Ω termination. For more details, refer to the speciﬁcations in the DPO4000 Technical Reference. DPO4000 Series User Manual...
Page 147: Analyze Waveform Data
Select from features such as cursors, automatic measurements, statistics, math, and FFT. Taking Automatic Measurements To take an automatic measurement: 1. Push Measure. 2. Push Select Measurement. Select Remove Gating Statistics Reference Indicators Conﬁgure Measure- Measure- Levels Cursors ment ment DPO4000 Series User Manual...
Page 148 Part of the waveform is above or below the display. To obtain a proper numerical measurement, turn the vertical scale and position knobs to make all of the waveform appear in the display. DPO4000 Series User Manual...
Page 149: Selecting Automatic Measurements
ﬁnal value. Positive Duty The ratio of the positive pulse width to the signal period expressed as a percentage. The duty Cycle cycle is measured on the ﬁrst cycle in the waveform or gated region. DPO4000 Series User Manual...
Page 150 The duration of a burst (a series of transient events) and is measured over the entire waveform or gated region. Phase The amount of time that one waveform leads or lags another waveform, expressed in degrees where 360° comprises one waveform cycle. See also Delay. DPO4000 Series User Manual...
Page 151 Positive Overshoot = (Maximum – High) / Amplitude x 100%. Negative This is measured over the entire waveform or gated region and is expressed as: Overshoot Negative Overshoot = (Low – Minimum) / Amplitude x 100%. DPO4000 Series User Manual...
Page 152 The most positive peak voltage. Max is measured over the entire waveform or gated region. The most negative peak voltage. Min is measured over the entire waveform or gated region. DPO4000 Series User Manual...
Page 153 The true Root Mean Square voltage over the entire waveform or gated region. Cycle RMS The true Root Mean Square voltage over the ﬁrst cycle in the waveform or the ﬁrst cycle in the gated region. DPO4000 Series User Manual...
Page 154 A voltage over time measurement. The measurement is the area over the ﬁrst cycle in the waveform or the ﬁrst cycle in the gated region expressed in volt-seconds. The area above the common reference point is positive while the area below the common reference point is negative. DPO4000 Series User Manual...
Page 155: Customizing An Automatic Measurement
Gating Gating conﬁnes the measurement to a certain portion of a waveform. To use: 1. Push Measure. 2. Push Gating. Select Remove Gating Statistics Reference Indicators Conﬁgure Measure- Measure- Levels Cursors ment ment DPO4000 Series User Manual...
Page 156 Analyze Waveform Data 3. Position the gates from the side-bezel menu Gating options. (Full record) Screen Between cursors Bring cursors on screen DPO4000 Series User Manual...
Page 157 Analyze Waveform Data Statistics Statistics characterize the stability of measurements. To adjust statistics: 1. Push Measure. 2. Push Statistics. Select Remove Gating Statistics Reference Indicators Conﬁgure Measure- Measure- Levels Cursors ment ment DPO4000 Series User Manual...
Page 158 On Off standard deviation calculations. Mean & Std Dev Samples a 32 Reset Statistics Snapshot To see all the single-sourced measurements at one moment in time: 1. Push Measure. DPO4000 Series User Manual...
Page 159 3. Push Snapshot All Measurements. Snapshot All Mea- surements 4. View results. Snapshot on 1 Period: 588.0 ns Freq: 1.701 MHz +Width: 529.7 ns -Width: 58.33 ns BrstW: 39.91 µs Rise: 2.014 µs Fall: 1.522 µs .... DPO4000 Series User Manual...
Page 160 Reference levels determine how time-related measurements are taken. For example, they are used in calculating rise and fall times. 1. Push Measure. 2. Push Reference Levels. Select Remove Gating Statistics Reference Indicators Conﬁgure Measure- Measure- Cursors Levels ment ment DPO4000 Series User Manual...
Page 161 90.0 % fall times. Use Mid reference primarily for measurements Mid Ref a 50.0 % between edges such as pulse widths. b 50.0 % Low Ref a 10.0 % - more - 1 of 2 DPO4000 Series User Manual...
Page 162: Taking Manual Measurements With Cursors
They are attached to the selected waveform Four screen cursors appear. Two are vertical and two are horizontal. They are no longer speciﬁcally attached to a waveform For example, the ﬁrst time you push Cursors the state might be off. DPO4000 Series User Manual...
Page 163 3. Push Select. This turns the cursor linking on and off. If linking is on, turning multipurpose knob a moves the two cursors together. Turning multipurpose knob b adjusts the time between the cursors. DPO4000 Series User Manual...
Page 164 5. Push Cursors again. This will put the cursors into screen mode. Two horizontal bars and two vertical bars span the graticule. 6. Turn multipurpose knobs a and b to move the pair of horizontal cursors. DPO4000 Series User Manual...
Page 165 This makes the vertical cursors active and the horizontal ones inactive. Now, as you turn the multipurpose knobs, the vertical cursors will move. Push Select again to make the horizontal cursors active again. 8. View the cursor and the cursor readout. DPO4000 Series User Manual...
Page 166 Analyze Waveform Data 9. Push Cursors again. This will turn off the cursor mode. The screen will no longer display the cursors and the cursor readout. DPO4000 Series User Manual...
Page 167 Readout: Indicates the value is controlled by multipurpose knob a. b Readout: Indicates the value is controlled by multipurpose knob b. The horizontal cursor lines on the display measure the vertical parameters, typically voltage. DPO4000 Series User Manual...
Page 168: Using Math Waveforms
Use the following procedure for executing simple (+, –, *, ÷) math operations on two waveforms: 1. Push Math. DPO4000 Series User Manual...
Page 169 1, 2, 3, 4, or reference waveforms R1, 2, 3, or 4. Choose the +, –, x, or ÷ operators. 4. For example, you might calculate power by multiplying a voltage waveform and a current waveform. DPO4000 Series User Manual...
Page 170 You can zoom in on math waveforms using the inner knob of the Pan-Zoom control. Use the outer knob for positioning the zoomed area. (See page 163, Managing Long Record Length Waveforms.) DPO4000 Series User Manual...
Page 171: Using Fft
You can match these frequencies with known system frequencies, such as system clocks, oscillators, or power supplies. 1. Push Math. 2. Push FFT. Dual Wfm Advanced Math Math DPO4000 Series User Manual...
Page 172 Hanning Window choices are: Rectangular, Hamming, Hanning, and Blackman-Harris. 6. Push the side-bezel Horizontal button to Horizontal activate multipurpose knobs a and b to pan 0.00 Hz 40.0 and zoom the FFT display. DPO4000 Series User Manual...
Page 173 Analyze Waveform Data 7. The FFT will appear on the display. Quick Tips 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. DPO4000 Series User Manual...
Page 174 It has a slightly better frequency resolution than the Hanning. Use Hamming for measuring sine, periodic, and narrow band random noise. This window works on transients or bursts where the signal levels before and after the event are signiﬁcantly different. DPO4000 Series User Manual...
Page 175: Using Advanced Math
Use Blackman-Harris for measuring predominantly single frequency waveforms to look for higher order harmonics. Using Advanced Math The advanced math feature lets you create a custom math waveform expression that can incorporate active and reference waveforms, measurements, and/or numeric constants. To use this feature: 1. Push Math. DPO4000 Series User Manual...
Page 176 3. Use the side-bezel menu buttons to create custom expressions. 4. Push Edit Expression and use the multipurpose knobs and the resulting lower-bezel buttons to create an expression. When done, push the side-bezel menu OK Accept button. DPO4000 Series User Manual...
Page 177 2. Turn multipurpose knob a to select INTG( 3. Push Enter Selection 4. Turn multipurpose knob a to select channel 1 5. Push Enter Selection 6. Turn multipurpose knob a to select ) 7. Push OK Accept. DPO4000 Series User Manual...
Page 178: Using Reference Waveforms
1. Push Ref R. This brings up the lower-bezel reference menu. 2. Use the resulting lower-bezel menu selections R 1 (On) R 2 (Off) R 3 (Off) R 4 (Off) to display or select a reference waveform. 25–Oct- 2006 DPO4000 Series User Manual...
Page 179 Scaling and Positioning a Reference Waveform. You can position and scale a reference waveform independently from all other displayed waveforms. Select the reference waveform and then adjust it with a multipurpose knob. You can do this whether acquisition is running or not. DPO4000 Series User Manual...
Page 180 Saving 10M Reference Waveforms. 10M reference waveforms are volatile and not saved when the oscilloscope power is turned off. To keep these waveforms, save them to external storage. Recalling Reference Waveforms from External Storage. DPO4000 Series User Manual...
Page 181: Managing Long Record Length Waveforms
Managing Long Record Length Waveforms The DPO4000 Series Wave Inspector controls (zoom/pan, play/pause, marks, search) help you to efﬁciently work with long record length waveforms. To magnify a waveform horizontally, rotate the Zoom knob. To scroll through a zoomed waveform, rotate the Pan knob.
Page 182 1. Rotate the inner knob on the Pan-Zoom control clockwise to zoom in on a selected portion of the waveform. Rotate the knob counterclockwise to zoom back out. 2. Alternatively, enable or disable the zoom mode by pushing the zoom button. DPO4000 Series User Manual...
Page 183 The upper portion of the display will show the position and size of the zoomed portion in the waveform, within the context of the overall record. DPO4000 Series User Manual...
Page 184 1. Rotate the pan (outer) knob of the pan-zoom controls to pan the waveform. Turn the knob clockwise to pan forward. Turn it counterclockwise to pan backwards. The further you turn the knob, the faster the zoom window pans. DPO4000 Series User Manual...
Page 185 Use the play-pause feature to automatically pan through a waveform record. To use it: 1. Enable the play-pause mode by pushing the play-pause button. 2. Adjust the play speed by turning the pan (outer) knob further. The further you turn it, the faster it goes. DPO4000 Series User Manual...
Page 186 Use this maximum rotation feature to replay a portion of the waveform that you just saw and want to see again. 5. Pause the play-pause feature by pushing the play-pause button again. DPO4000 Series User Manual...
Page 187 (outer) knob. Push the next ( →) or previous (←) arrow button to jump to an existing mark. 2. Push Set/Clear. If no search mark is at the screen center, the oscilloscope will add one. DPO4000 Series User Manual...
Page 188 (←) arrow button to jump to the mark you want to clear. To remove the current, center-positioned mark, just push Set/Clear. It works on both manually and automatically created marks. To automatically set and clear (delete) search marks: 1. Push Search. DPO4000 Series User Manual...
Page 189 3. From the side-bezel menu, turn on the search. 4. On the screen, hollow triangles show the location of automatic marks and solid triangles show the custom (user-deﬁned) locations. These appear on both normal and zoomed waveform views. DPO4000 Series User Manual...
Page 190 The Wave Inspector includes the following search capabilities: Search Description Edge Searches for edges (rising or falling) with a user-speciﬁed threshold level. Pulse Width Searches for positive or negative pulse widths that are >, <, =, or ≠ a user speciﬁed pulse width. DPO4000 Series User Manual...
Page 191 SPI: Search for SS Active, MOSI, MISO, or MOSI & MISO CAN: Search for Start of Frame, Type of Frame (Data, Remote, Error, Overload), Identiﬁer (standard or extended), Data, Identiﬁer and Data, End of Frame, or Missing Ack. DPO4000 Series User Manual...
Page 192: Save And Recall Information
Save and Recall Information Save and Recall Information The DPO4000 Series oscilloscope provides permanent storage for setups, waveforms, and screen images. Use the internal storage of the oscilloscope to save setups and reference waveform data. Use external storage, such as CompactFlash media and USB ﬂash-memory storage devices to save setups, waveforms, and screen images.
Page 193 6. Push Edit File Name to create a custom name Edit File Name for the screen image ﬁle. Skip this step to use a default name. 7. Push OK Save Screen Image to write the OK Save Screen image to the selected media. Image DPO4000 Series User Manual...
Page 194: Saving And Recalling Waveform Data
To save the current waveform data or to recall previously stored waveform data: 1. Push Save / Recall Menu. 2. Push Save Waveform or Recall Waveform Save Save Save Setup Recall Recall Assign File Utilities Screen Waveform Waveform Setup Save to from the lower-bezel menu. Image Waveform DPO4000 Series User Manual...
Page 195 Editing File, Directory, Reference Waveform, or Instrument Setup Names. Give ﬁles descriptive names that you can recognize at a later date. To edit ﬁle names, directory names, reference waveform and instrument setup labels: 1. Push Save / Recall Menu. DPO4000 Series User Manual...
Page 196 D: is the CompactFlash drive. E: is the USB drive plugged into the USB port on the front of the oscilloscope. F: and G: are the USB drives plugged into the USB host ports on the rear of the oscilloscope. DPO4000 Series User Manual...
Page 197 Save and Recall Information 5. Push Select to open or close ﬁle folders. 6. Push the Menu Off button to cancel the save operation, or push a side-bezel menu OK Save. item to complete the operation. OK Save DPO4000 Series User Manual...
Page 198 2. Push Save Screen Image, Save Waveform, Save Save Save Setup Recall Recall Map Save File Utilities Waveform Setup Screen Waveform Button or Save Setup. Image 3. Enter the ﬁle manager by pushing the To File side-bezel menu To File item. DPO4000 Series User Manual...
Page 199 Enter Character to select a character. 5. Push the Menu Off button to cancel the ﬁle naming operation or push a side-bezel menu Save to Selected File item to complete the operation. Save to Selected File DPO4000 Series User Manual...
Page 200 Four-channel models have four reference locations. Two-channel models have two reference locations. Saved waveforms contain only the most current acquisition. Gray-scale information, if any, is not saved. Displaying a Reference Waveform. To display a waveform stored in nonvolatile memory: 1. Push Ref R. DPO4000 Series User Manual...
Page 201 3. Push the front-panel Ref or the appropriate lower-bezel R button again to remove the reference waveform from the display. The reference waveform is still in nonvolatile memory and can be displayed again. DPO4000 Series User Manual...
Page 202: Saving And Recalling Setups
GPIB addresses. To save the setup information: 1. Push Save / Recall Menu. 2. Push Save Setup or Recall Setup from the Save Save Recall Assign File Utilities Save Setup Recall Screen Waveform Waveform Setup Save to lower-bezel menu. Image Setup DPO4000 Series User Manual...
Page 203 To Setup 1 To save setup information to a CompactFlash or USB ﬁle, push the To File button. To Setup 2 To Setup 3 – more – DPO4000 Series User Manual...
Page 204 USB ports on the rear of the oscilloscope. Push Select to open or close ﬁle folders. Push the Menu Off button to cancel the save operation, or push a side-bezel menu Save to Selected File item to complete the operation. DPO4000 Series User Manual...
Page 205: Saving With One Button Push
Save button. For example, if you have deﬁned the save operation to save waveform data to a USB drive, then each push of the Save button will save current waveform data to the deﬁned USB drive. 1. To deﬁne the Save button behavior, push Save/Recall Menu. DPO4000 Series User Manual...
Page 206 3. Push the action to assign to the Save button. Assign Save to Screen Image Waveform Setup 4. From now on, when you push Save the button will perform the action that you just speciﬁed rather than having to navigate menus each time. DPO4000 Series User Manual...
Page 207: Printing A Hard Copy
Alternatively, you can print to networked printers through the Ethernet port. Set Up Print Parameters To set up the oscilloscope to print hard copies: 1. Push Utility. 2. Push System as many times as needed to Print Setup select Print Setup from the resulting pop-up menu. DPO4000 Series User Manual...
Page 208 To add a USB printer to the list, plug the printer into the USB slot. The oscilloscope will automatically recognize it. To add an Ethernet printer to the list, use the instructions in the section titled Printing Over Ethernet. DPO4000 Series User Manual...
Page 209 4. Select the image orientation (portrait or landscape). Landscape Portrait 5. Choose Ink Saver On or Off. The On selection will print out a copy with a clear (white) background. Ink Saver on Ink Saver off DPO4000 Series User Manual...
Page 210 Save and Recall Information Printing Over Ethernet To set up the oscilloscope to print over Ethernet: 1. Connect an Ethernet cable to the rear-panel Ethernet port. 2. Push Utility. DPO4000 Series User Manual...
Page 211 3. Push System repeatedly until you select Print Print Setup Setup. 4. Push Select Printer. Select Orientation Ink Saver Printer Landscape System (N/A) Print Setup Select Printer 5. Push Add Network Printer. Network Printer Rename Printer DPO4000 Series User Manual...
Page 212 You can use the lower-bezel buttons to edit Enter Back Delete Clear Character Space the name, as needed. 8. Continue scrolling and pushing Select until you have entered all the desired characters. DPO4000 Series User Manual...
Page 213 Server IP Address: ﬁeld. 12. Turn multipurpose knob a and push Select or Enter Character as often as needed to enter the name. Add Printer 13. When done, push OK Accept. OK Accept DPO4000 Series User Manual...
Page 214: Erasing Dpo4000 Memory
You can erase all setup and waveform information saved in the nonvolatile memory with the TekSecure function. If you have acquired conﬁdential data on your oscilloscope, you may want to execute the TekSecure function before you return the oscilloscope to general use. The TekSecure function: Replaces all waveforms in all reference memories with null values DPO4000 Series User Manual...
Page 215 Displays a conﬁrmation or warning message, depending on whether the veriﬁcation is successful or unsuccessful To use TekSecure: 1. Push Utility. 2. Push System repeatedly until you select Conﬁg Conﬁg. 3. Push TekSecure. System Language Set Date & TekSecure Version Time Conﬁg English Erase v1.00 Memory DPO4000 Series User Manual...
Page 216 Save and Recall Information 4. Push OK Erase Setup and Ref Memory from the side-bezel menu. Erase Setup and Ref Memory To abort the procedure, push Menu Off. DPO4000 Series User Manual...
Page 217 Save and Recall Information 5. Power off the oscilloscope, and then power it back on to complete the process. DPO4000 Series User Manual...
Page 218: Use Application Modules
Refer to the DPO4000 Series Application Module Installation Instructions that came with your application module for instructions on installing and testing an application module. Some modules are described below. Additional packages may be available.
Page 219: Application Examples
If you need to see a signal in a circuit, but you do not know the signal amplitude or frequency, connect the probe from channel 1 of the oscilloscope to the signal. Then display the signal and measure its frequency and peak-to-peak amplitude. DPO4000 Series User Manual...
Page 220 Application Examples Using Autoset To quickly display a signal: 1. Push Autoset. DPO4000 Series User Manual...
Page 221 The oscilloscope can take automatic measurements of most displayed signals. To measure signal frequency and peak-to-peak amplitude: 1. Push Measure. 2. Push Select Measurement. Select Remove Gating Statistics Reference Indicators Conﬁgure Measure- Measure- Levels Cursors ment ment DPO4000 Series User Manual...
Page 222 1. This step is only needed if you are acquiring data on more than one channel. 4. Select the Frequency measurement from the side-bezel menu. Frequency -more- 5. Push -more- until you can select the Pk-Pk measurement. 6. Push Menu Off. DPO4000 Series User Manual...
Page 223 Application Examples 7. Observe that the measurements appear on the screen and update as the signal changes. DPO4000 Series User Manual...
Page 224: Measuring Two Signals
You have an audio generator that can inject a test signal at the ampliﬁer input. Connect two oscilloscope channels to the ampliﬁer input and output as shown. Measure both signal levels and use these measurements to calculate the gain. DPO4000 Series User Manual...
Page 225 To display the signals connected to channels 1 and 2: 1. Push channel 1 and channel 2 to activate both channels. 2. Push Autoset. To select measurements for the two channels: 1. Push Measure to see the measurement menu. DPO4000 Series User Manual...
Page 226 2. Push Select Measurement. Select Remove Gating Statistics Reference Indicators Conﬁgure Measure- Measure- Levels Cursors ment ment 3. Turn multipurpose knob a to select channel 1. 4. Page through the measurement menus until Amplitude you ﬁnd Amplitude. Select Amplitude. DPO4000 Series User Manual...
Page 227 6. Select Amplitude. Amplitude 7. Calculate the ampliﬁer gain using the following equations: Gain = (output amplitude ÷ input amplitude) = (3.155 V ÷ 130.0 mV) = 24.27 Gain (dB) = 20 x log(24.27) = 27.7 dB DPO4000 Series User Manual...
Page 228: Customizing Your Measurements
Speciﬁcally, the transition time from a low logic level (0.8 V) to a high logic level (2.0 V) must be 10 ns or less. To select the rise time measurement. 1. Push Measure. DPO4000 Series User Manual...
Page 229 3. Turn multipurpose knob a to select channel 1. This step is only needed if you are acquiring data on more channels than just channel 1. 4. Select the Rise Time measurement from the Rise Time side-bezel menu. DPO4000 Series User Manual...
Page 230 Mid Ref 8. Push Low Ref and turn multipurpose knob a to Low Ref a 800 mV enter 800 mV. If needed, push Fine to change the sensitivity of the multipurpose knob. DPO4000 Series User Manual...
Page 231 1. Push Single to capture a single acquisition. Now you want to measure the width of each displayed pulse. You can use measurement gating to select a speciﬁc pulse to measure. To measure the second pulse: 1. Push Measure. DPO4000 Series User Manual...
Page 232 Application Examples 2. Push Select Measurement. Select Remove Gating Statistics Reference Indicators Conﬁgure measure- Measure- Levels Cursors ment ment 3. Turn multipurpose knob a to select channel 1. 4. Select Positive Pulse Width measurement. Positive Pulse Width DPO4000 Series User Manual...
Page 233 Cursors ment ment 6. Select Between Cursors from the side-bezel menu to choose measurement gating using Between cursors. Cursors 7. Place one cursor to the left and one cursor to the right of the second pulse. DPO4000 Series User Manual...
Page 234 Application Examples 8. View the resulting width measurement (160 ms) for the second pulse. DPO4000 Series User Manual...
Page 235: Analyzing Signal Detail
In this example, you have a noisy signal displayed on the oscilloscope, and you need to know more about it. You suspect that the signal contains much more detail than you can currently see in the display. DPO4000 Series User Manual...
Page 236: Looking At A Noisy Signal
The signal appears noisy. You suspect that noise is causing problems in your circuit. To better analyze the noise: 1. Push Acquire. 2. Push Mode on the lower-bezel menu. Record Reset Waveform Mode Length Horizontal Display Position DPO4000 Series User Manual...
Page 237 Application Examples 3. Push Peak Detect on the side-bezel menu. Sample Peak Detect Hi Res Envelope Average 4. Push Intensity and turn multipurpose knob a to see the noise more easily. DPO4000 Series User Manual...
Page 238 Application Examples 5. View the results on the display. Peak detect emphasizes noise spikes and glitches in your signal as narrow as 1 ns, even when the time base is set to a slow setting. DPO4000 Series User Manual...
Page 239: Separating The Signal From Noise
Now you want to analyze the signal shape and ignore the noise. To reduce random noise in the oscilloscope display: 1. Push Acquire. 2. Push Mode. Mode Record Reset Waveform Length Horizontal Display Position 3. Push Average on the side-bezel menu. Average DPO4000 Series User Manual...
Page 240 Averaging reduces random noise and makes it easier to see detail in a signal. In the example to the right, a ring shows on the rising and falling edges of the signal when the noise is removed. DPO4000 Series User Manual...
Page 241: Taking Cursor Measurements
You can use the cursors to take quick measurements on a waveform. To measure the ring frequency at the rising edge of the signal: 1. Push channel 1 to select the channel 1 signal. 2. Push Measure. 3. Push Conﬁgure Cursors. Select Remove Gating Statistics Reference Indicators Conﬁgure Measure- Measure- Levels Cursors ment ment DPO4000 Series User Manual...
Page 242 6. Place one cursor on the ﬁrst peak of the ring using multipurpose knob a. 7. If the cursor readout says that the cursors are linked, push Select to unlink them. DPO4000 Series User Manual...
Page 243 Application Examples 8. Place the other cursor on the next peak of the ring using multipurpose knob b. 9. The cursor ∆ readout shows the measured ring frequency is 227 kHz. DPO4000 Series User Manual...
Page 244: Triggering On A Video Signal
Application Examples Triggering on a Video Signal The DPO4000 Series of oscilloscopes supports triggering on NTSC, SECAM, and PAL signals. In this example, you are testing the video circuit in a piece of medical equipment and need to display the video output signal. The video output is an NTSC standard signal.
Page 245 4. Push Trigger On. 5. Select Odd Fields. Odd Fields If the signal had been noninterlaced, you could choose to trigger on All Fields. 6. Turn the Horizontal Scale knob to see a complete ﬁeld across the screen. DPO4000 Series User Manual...
Page 246 Application Examples 7. View results. Triggering on Lines Triggering on Lines. To look at the video lines in the ﬁeld: 1. Push Trigger Menu. DPO4000 Series User Manual...
Page 247 Type Standard Source Trigger On Mode Video 525/NTSC All Lines Auto & Holdoff 3. Push Trigger On. 4. Select All Lines. All Lines 5. Adjust Horizontal Scale to see a complete video line across the screen. DPO4000 Series User Manual...
Page 248: Capturing A Single-Shot Signal
To set up for a single-shot acquisition: 1. Adjust the Vertical Scale and Horizontal Scale to appropriate ranges for the signal you expect to see. DPO4000 Series User Manual...
Page 249 3. Push Mode. 4. Select Sample. 5. Push Trigger Menu. 6. Push Slope and 7. Turn the Trigger Level knob to adjust the trigger level to a voltage midway between the open and closed voltages of the replay. DPO4000 Series User Manual...
Page 250 Application Examples 8. Push Single (single sequence). When the relay opens, the oscilloscope triggers and captures the event. The Single sequence button disables auto triggering so that only a valid triggered signal is acquired. DPO4000 Series User Manual...
Page 251: Optimizing The Acquisition
When the next acquisition is captured with the new vertical and horizontal settings, you can see more detail about the relay contact opening. You can now see that the contact bounces several times as it opens. DPO4000 Series User Manual...
Page 252: Using The Horizontal Zoom Function
1. Turn the Zoom knob. 2. Turn the Pan knob to place the center of the zoom box close to where the relay contact begins to open. 3. Turn the Zoom knob to magnify the waveform in the zoom window. DPO4000 Series User Manual...
Page 253: Correlating Data With A Tla5000 Logic Analyzer
You can do that with iView, which lets you transfer analog waveforms from the oscilloscope to the logic analyzer display. You can then view time-correlated analog and digital signals side-by-side and use this to pinpoint sources of glitches and other problems. DPO4000 Series User Manual...
Page 254 Application Examples The iView External Oscilloscope Cable allows you to connect your logic analyzer to a Tektronix oscilloscope. This enables communication between the two instruments. The Add External Oscilloscope wizard, which is available from the TLA application System menu, guides you through the process of connecting the iView cable between your logic analyzer and oscilloscope.
Page 255 Application Examples 2. Select your model of oscilloscope. 3. Follow the on-screen instructions, and then click Next. 4. See your Tektronix Logic Analyzer documentation for more information on correlating data between a DPO4000 Series Oscilloscope and a Tektronix Logic Analyzer.
Page 256: Tracking Down Bus Anomalies
Once you locate the problem location, how do you determine what went wrong? You can use your DPO4000 Series oscilloscope, with its serial triggering and long-record length management features, to track down the problem in both the physical layer and in the protocol layer of the bus.
Page 257 Application Examples 1. Connect the channel 1 probe to the clock line. 2. Connect the channel 2 probe to the data line. 3. Push Autoset. DPO4000 Series User Manual...
Page 258 C bus in the resulting screen menus. 5. Push Trigger Menu. 6. Push Type to select Bus. Enter trigger Address Direction Mode parameters in the resulting screen menus. Read Auto Type Source Bus Trigger On & Holdoff B1 (I2C) Address DPO4000 Series User Manual...
Page 259 Jump back with the left arrow key. Do you have all the packets that you expected to have? If not, at least you have narrowed your search down to the last packet sent. DPO4000 Series User Manual...
Page 260 Application Examples 10. Analyze the decoded packets in the protocol layer. Did you send the data bytes in the correct order? Did you use the correct address? DPO4000 Series User Manual...
Page 261 Play-pause, 54 Analysis and Connectivity, xii button, 84, 85, 102 Previous, 54 Application module menu, 51, 85 printer icon, 57, 196 DPO4AUTO, 84 Bus trigger, deﬁned, 102 Ref, 51, 160, 182 DPO4EMBD, 84 Buses, 84, 102 DPO4000 Series User Manual...
Page 262 Event Table, 88, 89 Channel readout, 64 Default Setup, 73 Excel, 34 Clearance, DPO4000, 6 button, 50, 58, 73 Expansion point icon, 61 Communications, 35, 40 menu, 50 CompactFlash, x, 2, 5, 50, 58, 174 Undo, 73 DPO4000 Series User Manual...
Page 263 Front cover, 2 Height, DPO4000, 6 Front panel, 45 Hi Res acquisition mode, 79 Front-panel connectors, 66 I2C, 51, 84, 102 Holdoff, trigger, 93 Front-panel overlay, 22 Horizontal delay, 94 Full graticule style, 118 Functional check, 15 DPO4000 Series User Manual...
Page 264 Mode, roll, 83 Vertical position, 57, 72 Measure button, 49, 129, 139, 140, Multipurpose knob, 48, 53, 54, 80, 86, Vertical scale, 57, 72 203, 207, 210, 213 177, 224, 225 zoom, 54, 152, 164 Measurement menu, 49 DPO4000 Series User Manual...
Page 265 Rear-panel connectors, 68 Print, 57, 189 inﬁnite, 115 Recalling Printing a hard copy, 189 variable, 115 setups, 184 Printing, Ethernet, 192 Play, 166 waveforms, 174 Probe Comp, 16 Play-pause button, 54, 167 Record length, x Probe compensation, 17 DPO4000 Series User Manual...
Page 266 Switch, power, 57 Serial, 84, 102, 238 Service information, xiii Set / Clear Mark button, 55, 169 Safety Summary, v Table, Event, 88, 89 Set to 50% button, 56, 97 Sample acquisition mode, 78 TDSPCS1, 35 DPO4000 Series User Manual...
Page 267 USB, x, 5, 36, 39, 50, 58, 69, 174, 189 View pretrigger, 91, 96 port, 68 waveform record, 61 readout, 107 USBTMC, 68 Voltage, Input sequential, 107 User marks, 169 DPO4000, 6 Serial, 84, 102, 238 P6139A, 8 slope, 96 DPO4000 Series User Manual...
Page 268 166 play, 166 play-pause, 167 Zoom, 164 record deﬁned, 77 button, 54 removing, 112 graticule size, 166 search and mark, 169 Horizontal, 234 user marks, 169 knob, 54, 164 zoom, 164 Waveform baseline indicator, 65 DPO4000 Series User Manual...

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Tektronix DPO4000 Series User Manual

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