User Manual TDS3000 Series Digital Phosphor Oscilloscopes 071-0274-01 This document supports firmware version 2.00 and above.
Copyright © Tektronix, Inc. All rights reserved. Tektronix products are covered by U.S. and foreign patents, issued and pending. Information in this publication supercedes that in all previously published material. Specifications and price change privileges reserved. Printed in the U.S.A. Tektronix, Inc., P.O. Box 1000, Wilsonville, OR 97070–1000 TEKTRONIX, TEK, TEKPROBE, and Tek Secure are registered trademarks of Tektronix, Inc. DPX is a trademark of Tektronix, Inc.
OSCILLOSCOPE WARRANTY Tektronix warrants that the products that it manufactures and sells will be free from defects in materials and workmanship for a period of three (3) years from the date of purchase from an authorized Tektronix distributor. 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.
PROBE WARRANTY Tektronix warrants that the products that it manufactures and sells will be free from defects in materials and workmanship for a period of one (1) year from the date of purchase from an authorized Tektronix distributor. 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.
Table of Contents General Safety Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . iv Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Contacting Tektronix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viii ix Getting Started Initial Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Functional Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Probe Compensation . . .
Table of Contents Application Examples Taking Simple Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . Using Autoset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Selecting Automatic Measurements . . . . . . . . . . . . . . . . . . Measuring Two Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . Customizing Your Measurements . . . . . . . . . . . . . . . . . . . . Analyzing Signal Detail . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table of Contents Appendices Appendix A: Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . A–1 Appendix B: Factory Setup . . . . . . . . . . . . . . . . . . . . . . . . . . B–1 Appendix C: Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C–1 Appendix D: Probe Basics . . . . . . . . . . . . . . . . . . . . . . . . . . . . Probe Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Probe Compensation . . . . . . . . . . . . . . . . .
General Safety Summary 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. 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. Connect the probe output to the measurement instrument before connecting the probe to the circuit under test.
General Safety Summary Replace Batteries Properly. Replace batteries only with the proper type and rating specified. Recharge Batteries Properly. Recharge batteries for the recommended charge cycle only. Do Not Operate Without Covers. Do not operate this product with covers or panels removed. Use Proper Fuse. Use only the fuse type and rating specified for this product. Avoid Exposed Circuitry. Do not touch exposed connections and components when power is present.
General Safety Summary Safety Terms and Symbols Terms in This Manual. 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. Terms on the Product. These terms may appear on the product: DANGER indicates an injury hazard immediately accessible as you read the marking.
General Safety Summary Preventing Electrostatic Damage CAUTION. Electrostatic discharge (ESD) can damage components in the oscilloscope and its accessories. To prevent ESD, observe these precautions when directed to do so. Use a Ground Strap. Wear a grounded antistatic wrist strap to discharge the static voltage from your body while installing or removing sensitive components. Use a Safe Work Area.
Preface This User Manual describes the capabilities, operation, and applications of the TDS3000 Series Digital Phosphor Oscilloscopes. The following table shows you where to find information in this manual.
Preface Contacting Tektronix Product Support For questions about using Tektronix measurement products, call toll free in North America: 1-800-TEK-WIDE (1-800-835-9433 ext. 2400) 6:00 a.m. – 5:00 p.m. Pacific time Or contact us by e-mail: tm_app_supp@tek.com For product support outside of North America, contact your local Tektronix distributor or sales office. Service Support Tektronix offers extended warranty and calibration programs as options on many products.
Preface x TDS3000 Series User Manual
Getting Started
Getting Started In addition to a product and feature description, this chapter covers the following topics: H How to perform a quick functional check, install and compensate passive probes, and compensate the signal path H How to install the power cord, battery pack, and operate the oscilloscope safely with battery power H How to install application modules and communication modules H How to use the menu system H How to identify the oscilloscope controls and connectors Initial Setup The following procedure
Getting Started Functional Check Perform this quick functional check to verify that your oscilloscope is operating correctly. 1. Connect the oscilloscope power cable (refer to page 1–9). 2. Turn on the oscilloscope. Wait for the confirmation that all self tests have passed. PASSED On/Standby button 3. Connect the oscilloscope probe to channel 1. Attach the probe tip and reference lead to the PROBE COMP connectors. PROBE COMP CH 1 4. Push the AUTOSET button.
Getting Started Probe Compensation Perform this adjustment to match your probe to the input channel. This should be done whenever you attach a passive probe for the first time to any input channel. 1. Connect the oscilloscope probe to channel 1. Attach the probe tip and reference lead to the PROBE COMP connectors, then push AUTOSET. If using the probe hook-tip, ensure a proper connection by firmly twisting the tip onto the probe. 2. Check the shape of the displayed waveform.
Getting Started Signal Path Compensation (SPC) The signal path compensation (SPC) routine optimizes the oscilloscope signal path for maximum measurement accuracy. You can run the routine anytime but you should always run the routine if the ambient temperature changes by 10 C or more. To compensate the signal path, do the following steps: 1. Disconnect any probes or cables from the channel input connectors. 2. Push the UTILITY button. 3. Push the System screen button to select Cal. 4.
Getting Started Acquisition Features Separate Digitizers. Ensure accurate timing measurements with separate digitizers for each channel. Each digitizer can sample at up to the maximum sample rate; acquisition on all channels is always concurrent to provide full single-shot bandwidth on each channel. See page 1–4. Normal Acquisition. Acquire 10,000 point waveforms to capture horizontal detail and then use the zoom detail. See page 3–11. function to analyze the Fast Trigger Acquisition.
Getting Started Display Features Color LCD Display. Identify and differentiate waveforms easily with color coding. Waveforms, readouts, and buttons are color matched to increase productivity and reduce operating errors. See page 3–19. Digital Phosphor. A Digital Phosphor Oscilloscope can clearly display intensity modulation in your signals. The oscilloscope automatically overlays subsequent acquisitions and then decays them to simulate the writing and decay of the phosphor in an analog oscilloscope CRT.
Getting Started Convenience Features Autoset. Use Autoset to quickly set up the vertical, horizontal, and trigger controls for a usable display. See page 3–4. Scope QuickMenu. Use the built-in Scope QuickMenu for simplified oscilloscope operation. See page 1–28. Single Sequence. One button sets the trigger parameters to the correct settings for a single-shot acquisition (or single-sequence acquisition). See page 3–3. Floppy Disk.
Getting Started Transporting the Oscilloscope When transporting the oscilloscope, wrap the cord around the handle as shown below. Use the supplied cord retainer if the power plug does not have a molded-in retainer. The oscilloscope front cover has a convenient place to store the Reference Manual. If you are not using a battery, use the accessory tray in the battery compartment to store probes and other accessories. CAUTION.
Getting Started Operating Positions Use the handle and feet to place the oscilloscope in a convenient operating position. Connecting Power To connect a power cord, do these steps: 1. Open the strain relief and slip it over the power cord. 2. Snap the strain relief into its hole in the rear panel of the oscilloscope. 3. Connect the power cord to the power input connector.
Getting Started Using Battery Power You can operate the oscilloscope continuously for approximately two hours from the rechargeable battery pack. A triangle icon in the display ( ) shows when the battery is in use, a power-plug icon ) shows when line power is connected, and a gauge icon ( ( )shows the charge level in the battery. The oscilloscope turns off automatically when the battery runs low; the screen may turn white a few minutes before the automatic shutdown.
Getting Started Operating Safely with Battery Power WARNING. To avoid electric shock, connect the rear-panel ground terminal to earth ground when operating the instrument from battery power. For safe operation, the oscilloscope chassis should always remain at earth ground potential. Without a connection between the chassis and earth ground, you can receive a shock from exposed metal on the chassis if you connect an input to a hazardous voltage (>30 VRMS, >42 Vpk).
Getting Started Installing the Battery To install the optional battery pack, do these steps: 1. Open the battery compartment door on the rear panel. 2. Remove the accessory tray. Battery door (Opened) 3. Slide the battery into the compartment and press it in from both sides until you hear the latches click. 4. Press on both sides of the battery compartment door to snap it closed.
Getting Started To remove the battery, do these steps: 1. Open the battery compartment door. 2. Raise the handles on each side of the battery and use them to pull the battery out of the oscilloscope.
Getting Started Charging the Battery The battery charges automatically when the oscilloscope is connected to line power. You can also charge the battery with the optional external charger (TDS3CHG). Configuration Typical charging time Battery charging in oscilloscope with oscilloscope turned on or off 18 hours Battery charging with TDS3CHG external charger 3 hours NOTE. Charge the battery before using it for the first time or after prolonged storage.
Getting Started Installing an Application Module CAUTION. To avoid damage to the oscilloscope or application module, observe the ESD precautions described on page vii. Optional application packages are available to extend the capability of your oscilloscope. You can install up to four application modules at one time. Application modules can go into the two slots with windows in the upper right corner of the front panel. Two additional slots are hidden behind the two you can see.
Getting Started 8. Push OK Load New Firmware to begin loading the firmware. During the process, the oscilloscope may instruct you to insert a second floppy disk. When the firmware upgrade is complete, the oscilloscope will restart automatically with the new firmware. NOTE.
Getting Started Installing a Communication Module CAUTION. To avoid damage to the oscilloscope or communication module, observe the ESD precautions described on page vii. To install one of the optional communications modules, do these steps: 1. Turn the oscilloscope power off. 2. Press down on the latching tab to remove the blank cover. 3. Slide the communication module into the compartment until the internal connectors are seated and the latching tab locks. 4. Turn power on.
Getting Started Latching tab Front-Panel Menus and Controls The front panel has buttons and controls for the functions you use most often. The front panel has menus to access more specialized functions. Using the Menu System To use the menu system, follow the steps shown on the next two pages.
Getting Started 1. Push a dark-colored front-panel menu button to display the menu you want to use. MEASURE SAVE/RECALL QUICKMENU CURSOR VERTICAL DISPLAY HORIZONTAL UTILITY TRIGGER ACQUIRE 2. Push a bottom screen button to select a menu item. If a pop-up menu appears, continue to push the screen button to select an item from the pop-up menu.
Getting Started 3. Push a side screen button to choose a menu item. If the menu item contains more than one choice, push the side screen button again to make the choice. 4. Certain menu choices require you to set a numerical value to complete the setup. Use the general purpose knob to adjust the parameter value. Push the COARSE button to make larger adjustments.
Getting Started Using the Menu Buttons You can use the menu buttons to perform many functions in the oscilloscope. SELECT MEASURE SAVE/RECALL QUICKMENU COARSE CURSOR 1 2 3 4 DISPLAY UTILITY 5 6 1. MEASURE. Performs automated measurements of waveforms. 2. CURSOR. Activates the cursors. 3. SAVE/RECALL. Saves and recalls setups and waveforms to memory or a floppy disk. 4. DISPLAY. Changes the appearance of waveforms and the display screen. 5. QUICKMENU.
Getting Started VERTICAL HORIZONTAL TRIGGER POSITION POSITION LEVEL SCALE SCALE 7 ACQUIRE WAVEFORM INTENSITY 8 9 7. Vertical MENU. Adjusts the scale, position, and offset of waveforms. Sets the input parameters. 8. Trigger MENU. Adjusts the trigger functions. 9. Acquire MENU. Sets the acquisition modes and horizontal resolution, and resets the delay time.
Getting Started Using the Dedicated Controls These dedicated buttons and controls generally control waveforms and cursors without the use of menus.
Getting Started 1. COARSE. Causes the general purpose knob and position knobs to make adjustments more quickly. 2. SELECT. Toggles between the two cursors to select the active cursor. 3. General purpose knob. Moves the cursors. Sets numerical parameter values for some menu items. Push COARSE to make adjustments quickly. 4. Vertical POSITION. Adjusts the vertical position of the selected waveform. Push COARSE to make adjustments more quickly. 5. Horizontal POSITION.
Getting Started 15. Horizontal SCALE. Adjusts the horizontal scale factor. 16. Horizontal zoom. Splits the screen and magnifies the current acquisition horizontally. 17. Waveform OFF. Removes selected waveform from the display. 18. Vertical SCALE. Adjusts selected waveform vertical scale factor. 19. CH1, CH2, (CH3, CH4,) MATH. Displays a waveform and chooses the selected waveform. REF shows the reference waveform menu. 20 21 22 23 20. Hard copy.
Getting Started Identifying Items in the Display The following items may appear in the display; not all items are visible at any given time. Some readouts move outside the graticule area when menus are turned off. 2 3 4 5 6 7 8 1 13 9 10 12 11 1. Waveform baseline icons show the zero-volt level of the waveforms (ignoring the effect of offset). The icon colors correspond to the waveform colors. 2.
Getting Started 5. Waveform record icon shows the trigger location relative to the waveform record. The line color corresponds to the selected waveform color. 6. Trigger status readout show trigger status. 7. Trigger level icon shows the trigger level on the waveform. The icon color corresponds to the trigger source channel color. 8. Cursor and measurement readouts show results and messages. 9. Trigger readouts show the trigger sources, slopes, and levels, and position. 10.
Getting Started Using QuickMenus The QuickMenu feature simplifies the use of the oscilloscope. When you push the QUICKMENU button, a set of frequently used menu functions show on the display. Then, push the screen buttons around the display to operate the QuickMenu. See page 3–39 for general instructions to operate QuickMenus. Using the Scope QuickMenu. Scope is one type of QuickMenu that you can use to control the basic oscilloscope functions.
Getting Started 1. Edge Trigger controls. Push these screen buttons to set trigger parameters for edge trigger. 2. Trigger controls if either B trigger or video trigger is selected. 3. Cursor control. Push this screen button to turn on cursors and select the cursor type. Push the SELECT button to toggle between the two cursors to select the active cursor. Use the general purpose knob to move the active cursor. 4. Acquisition controls. Push these screen buttons to set acquisition parameters. 5.
Getting Started Front-Panel Connectors 1 1MW, 13pF ≤150 VRMS CATl CH 1 CH 2 1MW, 13pF ≤150 VRMS CATl PROBE COMP [ 5V Ɩ 50W ≤5VRMS CH 3 CH 4 50W ≤5VRMS 2 1 1MW, 17pF ≤150 VRMS CATl 1MW, 13pF ≤150 VRMS CATl CH 1 CH 2 PROBE COMP [ 5V Ɩ EXT TRIG 50W ≤5VRMS 2 3 1. PROBE COMP. Square wave signal source to compensate probes. 2. CH 1, CH 2, (CH 3, CH 4). Channel inputs with TekProbe interface. 3. EXT TRIG. External trigger input with TekProbe interface (two-channel models only).
Getting Started Rear-Panel Connectors 3 1 5 +14.2 V DC ≤400 mA 2 4 1. Parallel printer port. Connect to a printer to make hard copies. 2. CAL switch. For use by authorized service personnel only. 3. DC power output. Provides ~15 V DC accessory power only when the oscilloscope is connected to the AC power line. 4. Ground terminal. Connect to earth ground when using battery power. See page 1–11 for important safety information. 5. Power input. Attach to an AC power line with integral safety ground.
Getting Started 8 9 6 TDS3GM 7 TDS3VM 7 TDS3EM 7 6. GPIB port. Connect to a controller for remote programmability. 7. RS-232 port. Connect to a controller or terminal for remote programmability or printing. 8. VGA port. Connect to a VGA monitor to display the screen image. 9. 10baseT local area network (LAN) Ethernet port. Connect to a 10baseT network for remote printing or programming.
Application Examples
Application Examples This section presents five common oscilloscope applications: Taking simple measurements Analyzing signal detail Triggering on a video signal Capturing a single-shot signal Using the disk drive Each application example highlights different features of the oscilloscope and gives you ideas about using the oscilloscope to solve test problems.
Application Examples Taking Simple Measurements You need to see a signal in a circuit, but you do not know the signal amplitude or frequency. Connect the oscilloscope to quickly display the signal and then measure its frequency and peak-to-peak amplitude. Ch 1 Using Autoset To quickly display a signal, do these steps: 1. Connect the channel 1 probe to the signal. 2. Push the AUTOSET button. The oscilloscope sets vertical, horizontal, and trigger controls automatically.
Application Examples Selecting Automatic Measurements The oscilloscope can take automatic measurements of most displayed signals. To measure signal frequency and peak-to-peak amplitude, do these steps: 1. Push the MEASURE button to see the measurement menu. 2. Push the CH 1 button and then push the Select Measurement for Ch1 screen button. 3. Select the Frequency measurement. 4. Push the more screen button until you can select the Pk-Pk measurement. 5. Push the MENU OFF button.
Application Examples Measuring Two Signals You are testing a piece of equipment and need to measure the gain of its audio amplifier. 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. Ch 1 Ch 2 To display the signals connected to channels 1 and 2, do these steps: 1.
Application Examples To select measurements for the two channels, do these steps: 1. Push the MEASURE button to see the measurement menu. 2. Push the CH 1 button and then push the Select Measurement for Ch1 screen button. 3. Select the Amplitude measurement. 4. Push the CH 2 button and then push the Select Measurement for Ch2 screen button. 5. Select the Amplitude measurement. 6. Calculate the amplifier gain using the following equations: Gain + output amplitude + 3.155 V + 24.27 130.
Application Examples Customizing Your Measurements In this example you want to verify that the incoming signal to a piece of digital equipment meets its specifications. 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. 2.0 V 0.8 V ≤ 10 ns To select the rise time measurement, do these steps: 1. Push the MEASURE button to see the measurement menu. 2. Push the CH 1 button and then the Select Measurement for Ch1 screen button. 3.
Application Examples Setting Reference Levels. To set the reference levels to specific voltages, do these steps: 1. Push the Reference Levels screen button. 2. Push the Set Levels in screen button to select units. 3. Push the High Ref screen button. 4. Use the general purpose knob to select 2.0 V. 5. Push the Low Ref screen button. 6. Use the general purpose knob to select 800 mV. The measurement verifies that the transition time (3.842 ns) meets the specification (≤ 10 ns). Measuring Specific Events.
Application Examples 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, for example, do these steps: 1. Push the MEASURE button. 2. Push the CH 1 button and then push the Select Measurement for Ch1 screen button. 3. Select the Positive Width measurement. 4. Push the Gating screen button. 5. Select Gate With V Bar Cursors to choose measurement gating using cursors. 6.
Application Examples Analyzing Signal Detail 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 now see in the display.
Application Examples Looking at a Noisy Signal The signal appears noisy and you suspect that noise is causing problems in your circuit. To better analyze the noise, do these steps: 1. Push the acquire MENU button. 2. Select the Peak Detect acquisition mode. 3. Increase the WAVEFORM INTENSITY control to see the noise more easily. 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.
Application Examples 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, do these steps: 1. Push the acquire MENU button. 2. Select the Average acquisition mode. Averaging reduces random noise and makes it easier to see detail in a signal. In the example below, a ring shows on the rising and falling edges of the signal when the noise is removed.
Application Examples 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, do these steps: 1. Push the CURSOR button. 2. Push the Function screen button. 3. Select V Bars cursors. 4. Push the V Bar Units screen button. 5. Select 1/seconds (Hz). 6. Place one cursor on the first peak of the ring using the general purpose knob. 7. Push the SELECT button. 8.
Application Examples Using Delay You are analyzing a pulse waveform and use the + Width measurement to measure the waveform pulse width. You notice that the measurement is not stable, which implies that there is jitter in the pulse width. To use delay to see the jitter, do these steps: 1. Push the DELAY button. 2. Adjust the horizontal POSITION control to set the delay close to to the nominal pulse width (210 ms). Push the COARSE button to make delay adjustments more quickly.
Application Examples 3. Adjust the horizontal SCALE to a faster time base setting and increase the WAVEFORM INTENSITY to see the jitter in the pulse width. NOTE. You can toggle the delay function on and off to view signal details at two different areas of interest.
Application Examples Measuring Jitter To measure the peak-to-peak jitter, do these steps: 1. Push the CURSOR button. 2. Push the Function screen button. 3. Select the V Bars cursors. 4. Push the Bring Both Cursors On Screen screen button to quickly locate the cursors. 5. Place one cursor at the first falling edge and place the other cursor at the last falling edge. 6. Read the peak-to-peak jitter in the D readout (1.40 ms). You can also measure the minimum and maximum pulse widths.
Application Examples Triggering on a Video Signal 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. Use the video trigger to obtain a stable display. Ch 1 To trigger on the video fields, do these steps: 1. Push the trigger MENU button. 2. Push the Type screen button to select Video. 3. Push the Standard screen button to select 525/NTSC.
Application Examples 4. Push the Trigger On screen button. 5. Select Odd. 6. Adjust the horizontal SCALE to see a complete field across the screen. 7. Push the acquire MENU button. 8. Push the Resolution screen button. 9. Select Normal acquisition resolution. Normal acquisition resolution is the best choice to acquire a video field signal because the signal contains a great amount of horizontal detail. If the signal had been noninterlaced, you could choose to trigger on All Fields.
Application Examples Triggering on Lines. You can also look at the video lines in the field. To trigger on the lines, do these steps: 1. Push the Trigger On screen button. 2. Select All Lines. 3. Adjust the horizontal SCALE to see a complete video line across the screen. NOTE. The optional Extended Video Application Package adds, among other things, a video QuickMenu, video Autoset, the capability to operate at custom scan rates, and trigger on specific video lines.
Application Examples Looking at Modulation. A dedicated video waveform monitor clearly shows the modulation in a video signal. To see a similar modulation display on the oscilloscope screen, do these steps: 1. Start with triggered display of the video lines. 2. Push the acquire MENU button. 3. Push the Resolution screen button. 4. Select Fast Trigger acquisition resolution. 5. Adjust the WAVEFORM INTENSITY control for the amount of modulation you want to see.
Application Examples Capturing a Single-Shot Signal The reliability of a reed relay in a piece of equipment has been poor and you need to investigate the problem. You suspect that the relay contacts arc when the relay opens. The fastest you can open and close the relay is about once per minute so you need to capture the voltage across the relay as a single-shot acquisition. To set up for a single-shot acquisition, do these steps: 1.
Application Examples Optimizing the Acquisition The initial acquisition shows the relay contact beginning to open at the trigger point. This is followed by a large spikes that indicate contact bounce and inductance in the circuit. The inductance can cause contact arcing and premature relay failure. Before you take the next acquisition, you can adjust the vertical and horizontal controls to give you a preview of how the next acquisition might appear.
Application Examples Using the Horizontal Zoom Function If you want to take a close look at a particular spot on the acquired waveform, use the horizontal zoom function. To look closely at the point where the relay contact first begins to open, do these steps: 1. Push the zoom button . 2. Use the horizontal POSITION to place the expansion point close to where the relay contact begins to open. 3. Adjust the horizontal SCALE to magnify the waveform around the expansion point.
Application Examples Using the Disk Drive You need to do some work inside a remote site. You expect to use the oscilloscope to look at signal waveforms and then bring waveform information back to the office to complete a report and perform additional analysis. To do this, take along an IBM-compatible floppy disk. Remote site When you need to capture screen images, it may be most convenient to first save them to disk.
Application Examples Saving Screen Images While working at the remote site you discover a control signal that you want to capture periodically to show its long-term variation. You want to include these waveforms in a report you are preparing back at the office. Your desktop publishing software can import BMP graphics, so you decide to use this format for the screen images. To setup this configuration, do these steps: 1. Insert a floppy disk into the disk drive. 2. Push the UTILITY button. 3.
Application Examples The oscilloscope can append an automatic sequence number to the target file name. This feature is convenient because you want to capture a screen image of the same control signal every five minutes. To set up the target file name and automatic sequence, do these steps: 1. Push the File Utilities screen button. 2. Use the general purpose knob to highlight the file TEK?????.BMP. 3. Select the Rename screen button. 4.
Application Examples Running the Test. To capture the control signal every few minutes, do these steps: 1. Display the signal, measurements, and menus as you want them to appear in the screen images. 2. Push the hardcopy button . 3. Repeat step 2 every few minutes until you are finished with the test. 4. When you are finished, push UTILITY to see the list of sequential files that have been saved. The files are labeled with their sequential names as well as the time and date each was created.
Application Examples Saving Waveform Data You find another signal that you want to analyze with a spreadsheet program back at the office. To save the waveform data on a disk, do these steps: 1. Display the signal on the oscilloscope screen. 2. Push the SAVE/RECALL button. 3. Push the Save Wfm screen button. 4. Select To File. 5. Select Spreadsheet File Format. The default target file, TEK?????.CSV, is now automatically highlighted. 6. Push the Save To Selected File screen button to save the waveform. 7.
Application Examples 2–28 TDS3000 Series User Manual
Reference
Introduction to Reference This chapter contains detailed information about the operation of the oscilloscope. The topics in this chapter are arranged by front-panel button or control group name.
Acquisition Controls Acquisition Controls Run/Stop Button Push the RUN/STOP button to stop and start waveform acquisition. Also push RUN/STOP when you want to resume continuous acquisition after a single-sequence acquisition. Readout in the top left corner of the display shows the status of the acquisition. Acquisition status readout Description Run: Acquisition is running. Roll: A roll-mode acquisition is running. Stop: Acquisition is stopped. PreVu: Previewing; waiting for trigger.
Acquisition Controls Single Sequence Button Push the SINGLE SEQ button to execute a single-shot acquisition. The function of the SINGLE SEQ button depends on the acquisition mode.
Acquisition Controls Autoset Button Push the AUTOSET button to automatically adjust the vertical, horizontal, and trigger controls for a usable display. You can manually adjust any of these controls if you need to optimize the display. When you are using more than one channel, the autoset function sets the vertical scale for each channel and positions the channels to prevent overlapping.
Acquisition Controls Waveform Intensity The WAVEFORM INTENSITY adjusts the intensity of the waveforms in the display. The term Digital Phosphor represents the way this control simulates the intensity control of an analog oscilloscope. At maximum intensity, all waveform points are displayed at full brightness. As you decrease the intensity, you can see intensity grading in the waveforms.
Acquisition Controls Acquire Menu Push the Acquire MENU button to show the acquire menu. Bottom Side Description Mode Sample Use for normal acquisition. Peak Detect Detects glitches and reduces the possibility of aliasing. Envelope N Captures variations of a signal over a period of time. (Adjust N with the general purpose knob.) Average N Reduces random or uncorrelated noise in the signal display. (Adjust N with the general purpose knob.
Acquisition Controls Key Points Vertical and Horizontal Preview. The vertical and horizontal preview functions let you change the vertical and horizontal controls while acquisition is stopped or while it is waiting for the next trigger. The oscilloscope rescales and repositions the current acquisition in response to the new control settings, and then uses the new settings for the next acquisition.
Acquisition Controls Samples acquired in four acquisition intervals Interval 1 2 3 Acquisition mode 4 Displayed record points (at maximum horizontal magnification) Interval 1 2 3 4 Sample Sample mode acquires one sample in each interval. Peak Detect Peak Detect mode uses the lowest and highest amplitudes from two consecutive intervals. Sample. Use Sample acquisition mode for the fastest acquisition at any SEC/DIV setting. Sample mode is the default mode. Peak Detect.
Acquisition Controls Three acquisitions from one source Acquisition 1 2 Acquisition mode 3 Envelope Envelope uses Peak Detect mode for each individual acquisition. Finds highest and lowest record points over many acquisitions Average Average uses Sample mode for each individual acquisition. Calculates average value for each record point over many acquisitions Envelope. Use Envelope acquisition mode to capture the minimum and maximum extremes of a signal over a specified number of acquisitions (N).
Acquisition Controls If you probe a noisy square wave signal that contains intermittent, narrow glitches, the waveform displayed will vary depending on the acquisition mode you choose.
Acquisition Controls Acquisition Resolution. You can choose either Normal or Fast Trigger acquisition resolution. This setting determines the record length that is acquired and affects the other factors shown in the table below.
Cursor Cursor Push the CURSOR button to show the cursor menu. CURSOR Bottom Side Desription Function Off Turns cursors off. H Bars Use to make vertical measurements. V Bars Use to make both vertical and horizontal measurements. Bring Selected Cursor to Center Screen Moves the active cursor to center screen. Bring Both Cursors On Screen Moves any off-screen cursor onto the screen. Independent Sets cursors to move independently.
Cursor Bottom Side Desription V Bar Units Sec (s) / 1/sec (Hz) Sets horizontal units to seconds or frequency (Hz). Ratio (%) Sets V Bar measurement units to percent. Phase (°) Sets V Bar measurement units to degrees. Use Cursor Positions as %/° Sets the V Bar measurement scale so that 0% or 0° is the current position of the left V Bar cursor and 100% or 360° is the current position of the right V Bar cursor.
Cursor Bottom Side Desription H Bar Units Base Sets the H Bar units to be the same as the selected waveform’s vertical measurement units (volts, IRE, dB, and so on). Ratio (%) Sets H Bar units to percent. Use Cursor Positions as 100% Sets the H Bar measurement scale so that 0% is the current position of the lowest H Bar cursor and 100% is the current position of the highest H Bar cursor. Use 5 divs as 100% Sets H Bar measurement scale so that 5 screen major divisions is 100%, where 0% is –2.
Cursor D 4.16 V @ –1.78 V Horizontal Bar cursors D 6.32 V @ 3.16 V D 5.86 ms @ 1.06 ms Vertical Bar cursors D Readout. The D readouts indicate the difference between the cursor positions. @ Readout. For H Bar or V Bar cursors, the voltage readout after the @ symbol indicates the location of the active cursor relative to zero volts. For V Bar cursors, the time readout after the @ symbol indicates the location of the active cursor relative to the trigger point. Cursor Interaction with Preview.
Cursor Cursors at Same Position. If both cursors are at the same position, and H Bars or V Bars are set to Ratio or Phase, both cursors are set to 0% (or 0°). 100%/360° is set to one pixel width away from the cursor position. V Bars and FFT. When the selected waveform is an FFT waveform, selecting V Bars and Phase sets the measurement to percent. Tracking Mode. In cursor tracking mode, both cursors move together when cursor 1 is selected.
Display Display Push the DISPLAY button to show the display menu. DISPLAY Bottom Side Description Waveform Display Dots Only Set to on to see dots only. Set to off to see dots and vectors. Persist Time Sets persist time. Set to Min Sets the persistence time to its minimum value. Clear Persistence Clears any displayed persistence. Backlight Intensity High Graticule Use for bright ambient conditions. Medium Use for dim ambient conditions. Low Use to extend battery-operation time.
Display Bottom Side Description XY Display Off (YT) Turns off an XY display. Triggered XY Turns on triggered XY display. Gated XYZ Turns on gated XY display. Displays XY signals when Z-channel signal is above a set level. Only available on 4-channel instruments. Ch1 (X) Versus Sets Ch2, Ch3, or Ch4 as the Y channel versus Ch1 as X. Ref1 (X) Versus or Sets Ref2, Ref3, or Ref4 as the Y channel versus Ref1 as X.
Display Waveform Persistence. Turn on waveform persistence to slow the decay of waveform points. You can set the persistence to a specific time or to infinite. Infinite persistence keeps all waveform points in the display until you change a control setting that erases the display. Display Colors. The channel buttons, waveforms, icons, and readouts are color-coded to help you identify them easily. The colors are preset and cannot be adjusted.
Display XY Waveform Restrictions. The math waveform, cursor, zoom, and autoset functions do not work in the XY display format. All reference waveforms displayed in XY format must have the same record length (500 or 10,000 points). Gated XYZ. Displays XY signals only when the Z (gating) channel is true. Gated XYZ is similar to analog oscilloscope modulated XYZ mode except that the displayed XY signal is either on or off; there is no intensity modulation.
Hard Copy Hard Copy After you connect a printer and set up the oscilloscope, push the hard-copy button at the left of the display to make a hard copy. You can also store hard-copy images on a floppy disk (in normal or compressed format) and then transfer them later to a PC for printing or use in a report. Connecting a Printer Connect your printer to the parallel printer port on the rear panel of the oscilloscope.
Hard Copy Key Points Printer Formats. The oscilloscope supports the following printers and file formats. 3–22 Format Description Thinkjet HP monochrome ink-jet printer Deskjet mono HP monochrome ink-jet printer Deskjet color HP color inkjet printer Laserjet HP monochrome laser printer Epson Epson 9-pin and 24-pin dot matrix printer Interleaf *.img Interleaf image object file format TIFF *.
Hard Copy Hard Copy File Compression. When compression is set to on, the oscilloscope compresses the hard copy data, using the current printer format, into a gnuzip file format, with the extension .gz. Compressing hard copy files lets you store more screen captures on a floppy disk. Centronics output is never compressed. .gz files can be decompressed using PKZIP or WinZip programs. Color and Gray-Scale Printing. You can print a color hard copy that uses the display colors.
Hard Copy Date and Time Stamp. To print the current date and time on your hard copies, do these steps: 1. Push the UTILITY button. 2. Push the System screen button to select Config. 3. Push the Set Date & Time screen button. 4. Set the Display Date/Time to On to add the current date and time to the display screen. 5. Push the Menu Off button. Printer Error Message. To avoid printer errors, always power on the printer and allow it to complete its initialization process before powering on the oscilloscope.
Horizontal Controls Horizontal Controls Use the horizontal controls to adjust the time base, adjust the trigger location, and to examine waveform details more closely. Horizontal Position Control When delay is off, the horizontal POSITION control moves the trigger point within the acquired waveforms. You can select full pretrigger, full posttrigger, or any point in between. Use a pretrigger setting (trigger position near 100% of the record) to acquire waveforms leading up to a trigger event.
Horizontal Controls The trigger position is marked with the letter T at the top of the graticule and also in the waveform record icon at the top of the screen. Trigger marker and horizontal expansion point Waveform record icon The small inverted triangle is the horizontal expansion point. When you change the horizontal SCALE setting, the waveforms contract or expand about this point. When delay is off, the horizontal expansion point is the same as the trigger point.
Horizontal Controls Delay Button Push the DELAY button when you want to delay the acquisition relative to the trigger event. Turn the horizontal POSITION control counterclockwise to increase the delay; the trigger point moves to the left and ultimately outside of the acquired waveform. Then, you can adjust the horizontal SCALE to acquire more detail around the area of interest (center of the screen). When delay is on, the trigger point separates from the horizontal expansion point.
Horizontal Controls In the screen example below, the trigger markers show that the trigger point is before the acquired waveform. The delay time, shown in the readout, is the time from the trigger point to the expansion point (center screen). Delay time readout The interaction between delay and other functions is summarized in the table below.
Horizontal Controls Horizontal Scale Control Use the horizontal SCALE control to adjust the time base. When delay is off, the scale expands or contracts around the trigger point. When delay is on, the scale expands or contracts around the center of the screen (see Delay Interactions on page 3–32 for possible exceptions). When the zoom function is active, use the horizontal SCALE control to adjust the amount of horizontal magnification (the actual time-base setting remains unchanged).
Horizontal Controls Key Points Maximum Zoom Magnification Factor. If you are using Normal acquisition resolution, the maximum horizontal magnification factor is 200X; in Fast-trigger the maximum is 10X. Horizontal Zoom and Preview. There are two ways you can magnify a stopped acquisition, horizontal zoom or preview. The differences in how horizontal zoom and preview interact with other functions are shown below.
Horizontal Controls Slow Horizontal Settings. At horizontal SCALE settings of 40 ms/div or slower, the oscilloscope may display waveforms in roll mode. As the rolling waveform fills the screen, the waveform intensity and vector fill appears to decrease. The oscilloscope automatically reduces the number of displayed points in order to maintain a high acquisition rate: this does not represent a loss of acquired data.
Horizontal Controls Delay Interactions. The maximum delay setting is a function of the time-base setting and acquisition resolution. If you set a large positive or negative delay, that amount of delay might be automatically reduced if you make the following additional control changes: Change to a faster time-base setting Change from Fast Trigger to Normal acquisition resolution If the delay reduction occurs, it may cause the waveform horizontal position to shift. Negative Delay.
Measure Measure Push the MEASURE button to show the measure menu. MEASURE Bottom Side Select Measurement Remove Measurement Description See table on page 3–37 for a description of the automatic measurements. Measurement 1 Measurement 2 Measurement 3 Measurement 4 Removes a specific measurement. All Measurements Removes all measurements. Gating High-Low Setup Off Use to take measurements on the full waveform record. Screen Use to take measurements on the portion of the waveform on screen.
Measure Bottom Side Description Reference Levels Set Levels in % or units Use to choose custom reference levels in relative or absolute units. High Reference Sets custom high reference level. Mid Reference Sets custom mid reference level. Low Reference Sets custom low reference level. Set to Defaults Sets reference levels to default values. Key Points Choosing Measurements. You can perform up to four automatic measurements and display them along the right side of the graticule.
Measure High-Low Setup. The oscilloscope determines the 10%, 50%, or 90% levels of the waveform and then uses them to calculate the measurements. You can choose the method used to determine these levels: Histogram sets the values statistically; it finds the most common value either above or below the midpoint (depending on whether it is defining the high or low reference level).
Measure In the example below, the cursors surround the second positive-going pulse so the oscilloscope can measure the width of that pulse. When gating is off, the oscilloscope takes measurements over the entire waveform record. Using Measurement Gating with Cursors. If V Bar cursors are already on when you select Cursor gating, the cursors do both functions at the same time. The cursor readouts are displayed at the same time that the cursors gate the automatic measurements.
Measure Measurement name Definition Amplitude Measured over the entire waveform. Amplitude = High (100%) – Low (0%) Burst Width The duration of a burst. Measured over the entire waveform. Cycle Mean The arithmetic mean over the first cycle in the waveform. Cycle RMS The true Root Mean Square voltage over the first cycle in the waveform. Fall Time Time that the falling edge of the first pulse in the waveform takes to fall from 90% to 10% of its amplitude.
Measure Measurement name Negative Duty Cycle Definition Measurement of the first cycle in the waveform. Duty Cycle + Negative Width Negative Period 100% Negative Measured over the entire waveform. Overshoot 100% Negative Overshoot + Low–Min Amplitude Negative Width Measurement of the first negative pulse in the waveform. The time between the 50% amplitude points. Pk–Pk Measured over the entire waveform.
QuickMenu QuickMenu QUICKMENU Push the QUICKMENU button to see a set of frequently used menu functions on the display. QuickMenus simplify oscilloscope operation and can increase your productivity. Scope is a standard QuickMenu for general purpose oscilloscope use. Some optional application modules also include a custom QuickMenu display. See page 1–28 for an example of the Scope QuickMenu. Key Points Using the QuickMenus.
Save/Recall Save/Recall Push the SAVE/RECALL button to show the save/recall menu. SAVE/RECALL 3–40 Bottom Side Description Save Current Setup Set To File Saves a setup to disk. To Setup 1 ... To Setup 10 Saves a setup to nonvolatile memory. Recall Saved Set- From File up Recall Setup 1 ... Recall Setup 10 Recalls a setup from disk. Recall Factory Setup OK Confirm Factory Init Initializes the setup.
Save/Recall Key Points Saving to Disk. See Saved Waveform Formats on page 3–44 for information about saving to and recalling from the disk. Saving Setups. To save the current setup to nonvolatile memory, push the Save Current Setup screen button and then select one of the ten storage locations. Then, push the OK Overwrite Saved Setup screen button to complete the operation or the MENU OFF button to cancel the operation. Recalling Setups.
Save/Recall Saving a Waveform. To save a waveform to nonvolatile memory, first select the waveform you want to save. Push the Save Wfm screen button and then select one of the four reference waveform locations. See page 3–76 for an alternate method you can use to save waveforms. Saved waveforms contain only the most current acquisition; gray-scale information, if any, is not saved. Displaying a Reference Waveform.
Save/Recall Removing a Reference Waveform from the Display. To remove a reference waveform from the display, push the REF button and then the Ref1, Ref2, Ref3, or Ref4 screen button to select a reference waveform. Push the waveform off button. The reference waveform is still in nonvolatile memory and can be displayed again. Erasing All Setups and Waveforms. See Tek Secure on page 3–63 for instructions on how to erase all setups and waveforms saved in nonvolatile memory.
Save/Recall Key Points Upgrading Firmware. You can use the disk drive to upgrade the oscilloscope firmware or install new application packages. See the documentation provided with these packages for instructions. Saved Waveform Formats. Use the Internal waveform format to save a waveform to disk if you intend to recall it to the display later as a reference waveform. Use the Spreadsheet format to create a comma-separated data file compatible with most spreadsheet programs.
Save/Recall Editing File, Directory, Reference Waveform, or Instrument Setup Names. You can edit file names,directory names, reference waveform and instrument setup labels, and Ethernet parameters (TDS3EM only). Use the general purpose knob to select an alphanumeric character. Use the screen buttons described below to edit and enter the new name. Screen button Function Enter Char Enters the selected character into the field. ² and ³ Moves the cursor to a different character in the field.
Save/Recall Deleting Files. To delete a file, select the file with the general purpose knob, push the Delete screen button, and then push the OK Delete screen button when you see the confirmation screen. If you do not want to see a confirmation screen each time you delete a file, push the Confirm Delete screen button to set it to Off. Renaming Files. To rename a file, select the file with the general purpose knob, push the Rename screen button, and then follow the instructions on page 3–45.
Save/Recall Formatting a Disk. The oscilloscope can format 1.44 MB IBM-compatible disks. To format a disk, insert it into the disk drive. Push the Format screen button and then push the OK Confirm Format screen button to confirm the operation. If you decide not to format the disk, push the MENU OFF button to stop the format operation. CAUTION. To avoid loss of data, do not format disks that already contain important data.
Save/Recall File Extensions. Files written by the oscilloscope have the following extensions. The oscilloscope can only read files with the SET, MSK, and ISF extensions. 3–48 File extension File type *.SET Saved setup file *.ISF Saved waveform file, Internal format *.CSV Saved waveform file, Spreadsheet format *.DAT Saved waveform file, Mathcad format *.TJ Hard copy file, Thinkjet format *.DJ Hard copy file, Deskjet format *.LJ Hard copy file, Laserjet format *.
Trigger Controls Trigger Controls Push the trigger MENU button to show the trigger menu and then push the Type screen button to select Edge or Video. See pages 3–55 and 3–59 for descriptions of Edge and Video trigger. See the manual for the TDS3TRG Advanced Trigger or TDS3VID Extended Video application module for more information if either module is installed. Trigger Level Use the trigger LEVEL control to adjust the trigger level.
Trigger Controls Force Trigger Push the FORCE TRIG button to force an immediate trigger event, even in the absence of a signal. This function is useful in these situations: If you do not see a waveform on the screen when using Normal trigger mode, push FORCE TRIG to acquire the signal baseline to verify that it is on the screen. After you push the SINGLE SEQ button to set up for a single shot acquisition, you can push the FORCE TRIG button to do a practice acquisition to verify the control settings.
Trigger Controls Bottom Side Description B Trigger After A B Trigger After A Time Sets the oscilloscope to trigger on the next B-trigger event that occurs after a specified period of time from the A trigger. Use the general purpose knob to set the time value. Set to Delay Time Sets the B Trigger After A Time value (B ▼) then Set to the horizontal B ▼ value, then (B ▼) to 0s sets B ▼ to zero seconds. B ▼ is the delay time from the B trigger point to the expansion point (center screen).
Trigger Controls The following figures show wait-for-time and wait-for-events triggering and how they relate to the horizontal delay time.
Trigger Controls After the A trigger event is recognized, the oscilloscope begins counting B trigger events. However, for the first B event to be counted, that event must consist of both an opposite-polarity edge and the edge that is counted. The opposite-polarity edge must occur ≥5 ns after the A trigger arming event. If this condition is not met, the oscilloscope does not count the first event, which results in a trigger on the n+1st event.
Trigger Controls Trigger Status Readout at the top of the screen shows you the current trigger status. The table below explains the trigger status indicators. 3–54 Trigger status Explanation Auto The oscilloscope is acquiring using auto trigger. Valid trigger events, if any, are infrequent. Trig’d The oscilloscope is acquiring using valid trigger events that are frequent enough to avoid auto triggering. PrTrig The oscilloscope is acquiring the pretrigger part of the waveforms.
Trigger Controls Edge Trigger Use Edge triggering to trigger on the rising or falling edge of the input signal at the trigger threshold. Bottom Side Description Ch1 ... Ch4 Sets the trigger source to a specific channel. AC Line Sets the trigger source to use the AC line signal (not available when operating with batteries). Ext Selects the external trigger source in two-channel oscilloscopes. Ext/10 rovi e a larger l r er trigger-level tri er level range r e att provides reduced sensitivity.
Trigger Controls Bottom Side Description Level Level Use to set the trigger level with the general purpose knob. Set to TTL Sets the trigger level to +1.4 V for TTL logic. Set to ECL Sets the trigger level to –1.3 V for ECL logic (Vee = –5.2 V). Set to 50% Sets the trigger level to the 50% amplitude level of the signal. Auto (untriggered roll) Enables free-running and roll-mode acquisitions. Normal Triggers only on valid trigger events. Holdoff (time) Sets holdoff to a specific time.
Trigger Controls Normal and Auto Mode. Use Normal trigger mode when you want to trigger only on a valid event. Use Auto trigger mode when you want the acquisition to occur, even when there is not a valid trigger event. Also choose Auto when you want a rolling waveform, with no trigger, at the slower time base settings. See page 3–32 for more information about roll mode. External Trigger. Two-channel oscilloscopes have an external trigger input. The trigger level range for the EXT setting is –0.8 V to +0.
Trigger Controls Holdoff. You can use holdoff to help stabilize the display of complex waveforms. After you press the Mode & Holdoff screen button, use the general purpose knob to set the holdoff time as an absolute value or as a percent of the record duration. Holdoff begins when the oscilloscope recognizes a trigger event and disables the trigger system until acquisition is complete. The trigger system remains disabled during the holdoff time.
Trigger Controls Video Trigger Choose video triggering to trigger on the odd fields, even fields, or on all the lines of an NTSC, PAL, or SECAM video signal. See the manual for the TDS3VID Extended Video application module for more information if that module is installed. Bottom Side Description 525/NTSC Triggers on a NTSC signal. 625/PAL Triggers on a PAL signal. SECAM Triggers on a SECAM signal. Type Video Standard Source Trigger On See page 3–55 for descriptions of these menu items.
Utility Utility The following are examples of what you can do with each of the six branches in the Utility menu: Use Config to select a language or set the time and date. Use Apps if an installed application module places items in this menu. See the documentation provided with your application packages for more information. Use I/O to set up the communication ports. Use Hard Copy to set up hard copy parameters.
Utility Configure System Use the System Config branch to access these functions. UTILITY Bottom Side Description English Use to choose your native language. Most o t oon-screen cree text te t appears e r in i the t e llanguagee you o choose. c oo e System Config Language Français Deutsch Italiano Español Português (Russian) (Japanese) (Korean) (Simplified Chinese) (Traditional Chinese) Set Date & Time Display Date/ Time Use to turn the date/time display On or Off.
Utility Bottom Side Description Battery TimeOuts Power Off TimeOut Use to set the time before an automatic shut down. Backlight TimeOut Use to set the time before the backlight automatically turns off. Tek Secure Erase Memory Erases all nonvolatile waveform and setup memory. Version Use to see the firmware version. Key Points Setting the Date and Time. To set the internal clock with the current date and time, push the Set Date & Time screen button.
Utility Backlight Time-Out. Press this button to adjust the backlight time-out delay. This feature automatically turns the backlight off after a period of time if the oscilloscope is not being used. Use the general purpose knob to set the backlight time-out delay to a fixed time or to ∞ (time-out off). Push any button to turn the backlight back on after an automatic time-out. Backlight time-out operates only when you use battery power. Tek Secure.
Utility I/O System Use the System I/O branch to access these functions. UTILITY Bottom Side Description Talk/Listen Address Sets the GPIB address. Hard Copy (Talk Only) Sets the GPIB port to talk only for making hard copies. Off Bus Disables the GPIB port. Debug Enables and disables a message window to help you debug GPIB problems. Baud Rate Sets the baud rate in steps from 1200 to 38400. Flagging Use to enable hard flagging (RTS/ CTS) or turn flagging off.
Utility Bottom Side Description Ethernet Network Settings (TDS3EM only) Change Instrument Settings Displays a list of fields in which you set oscilloscope Ethernet parameters such as address, instrument name, domain name, and so on. Refer to the TDS3000 Digital Phosphor Oscilloor scope Programmer Manual for procedures to set these fields. Refer to page 3–45 for an explanation of the field editing menu items.
Utility Key Points RS-232 Troubleshooting. If you are having difficulties with RS-232 communication, try the following remedies: Verify that you are using the correct RS-232 cable and adapters. Most computers require a null-modem connection to the oscilloscope. Most printers require a straight-through connection to the oscilloscope. Verify that the RS-232 cable is connected to the correct port on your computer or hard copy device.
Utility Calibration System Use the System Cal branch to access these functions. UTILITY Bottom Side Description System Cal Signal Path Compensates the signal paths to obtain best measurement accuracy. Factory Cal Used to calibrate the oscilloscope. This is a service function only. Cal Due Control Notify After Hours Sets the number of hours of operation of Operation before notifying you that a calibration is due.
Utility Factory Cal. Service personnel use these functions to calibrate the oscilloscope internal voltage references using external sources. Refer to your Tektronix field office or representative for assistance with these processes. Cal Due Control. The calibration due notification occurs only in the power-on screen. Set the controls to ∞ if you do not want to be notified when calibration is due. Diagnostic System Use the System Diag branch to access these functions.
Utility Stopping Diagnostics. Choose how you want the diagnostic routines to execute: Loop Once runs all diagnostic routines one time and then stops. Loop Always runs the diagnostic routines continuously. Push the RUN/STOP and then the MENU OFF buttons to resume normal operation. Loop Until Fail runs the diagnostic routines until the oscilloscope fails a test or until you cycle the power. Error Log. The error log contains summary data gathered over the life of the oscilloscope.
Vertical Controls Vertical Controls You can use the vertical controls to select waveforms, adjust the waveform vertical position and scale, and set input parameters. All vertical operations affect the selected waveform. Push a channel button (CH 1, CH 2, CH 3, or CH 4), the MATH button, or the REF button to select a waveform. Vertical Position Control Use the vertical POSITION control to locate the selected waveform in the display.
Vertical Controls Vertical Menu Push the vertical MENU button to show the vertical menu of the selected waveform. See these pages for more information about the specific vertical menus: Channel Buttons below Math Button on page 3–74 Ref Button on page 3–76 Channel Buttons Push a channel button (CH 1, CH 2, CH 3, or CH 4) to select a channel. Each channel button also displays the channel if it is not already displayed. Push the vertical MENU button to show the vertical menu of the selected channel.
Vertical Controls Bottom Side Description Bandwidth Full Bandwidth Sets bandwidth to the full oscilloscope bandwidth. 150 MHz Sets the bandwidth to 150 MHz (not available on some models). 20 MHz Sets the bandwidth to 20 MHz. Fine Scale Fine Scale Enables fine scale adjustment with the general purpose knob. Position Vertical Position Enables numerical vertical position adjustment. Set to 0 divs Sets vertical position to center screen.
Vertical Controls Vertical Preview. When you change the vertical POSITION or SCALE controls while the acquisition is stopped or it is waiting for the next trigger, the oscilloscope rescales and repositions the selected waveform in response to the new vertical control settings. You may see a clipped waveform if the original acquisition went off the screen. The oscilloscope then uses the new settings for the next acquisition.
Vertical Controls 50 W Protection. If you select the 50 W termination resistance, the maximum vertical scale factor is limited to 1 V/div. If you apply excessive input voltage, the oscilloscope automatically switches to 1 MW termination resistance to protect the internal 50 W termination. Math Button Push the MATH button to define the math waveform using the math menu. Also push the MATH button to display or select the math waveform.
Vertical Controls Scaling and Positioning the Math Waveform To position or scale a math waveform, select the math waveform and then adjust it with a vertical POSITION or SCALE control. You can do this whether acquisition is running or is stopped. Math Interaction with Preview. If you select a channel waveform and then adjust the vertical POSITION or SCALE control while the acquisition is stopped, the math waveform remains fixed. It does not track the changes you see to the channel waveform.
Vertical Controls Ref Button Push the REF button to show the reference menu. Push one of the submenus to display a reference waveform or make it the selected reference waveform. Bottom Side Description Ref 1 Save Ch1 to Ref1 Saves channel 1 to Ref 1. Save Ch2 to Ref1 Saves channel 2 to Ref 1. Save Ch3 to Ref1 Saves channel 3 to Ref 1. Save Ch4 to Ref1 Saves channel 4 to Ref 1. Save Math to Ref1 Ref 2 Ref 3 Ref 4 Saves the math waveform to Ref 1.
Vertical Controls Scaling and Positioning a Reference Waveform You can position and scale a reference waveform independenty from all other displayed waveforms. Select the reference waveform and then adjust it with a vertical or horizontal POSITION or SCALE control. You can do this whether acquisition is running or is stopped. If a reference waveform is selected, scaling and repositioning of the reference waveform operates the same way whether zoom is turned on or off. Gray-Scale Restriction.
Vertical Controls 3–78 TDS3000 Series User Manual
Appendices
Appendix A: Specifications This appendix contains specifications for the TDS3000 Series oscilloscopes. All specifications are guaranteed unless noted as “typical.” Typical specifications are provided for your convenience but are not guaranteed. Specifications that are marked with the n symbol are checked in Appendix E: Performance Verification. All specifications apply to all TDS3000 models unless noted otherwise.
Appendix A: Specifications Specifications (Cont.) Inputs Input coupling DC, AC, or GND Channel input remains terminated when using GND coupling. Input impedance, DC coupled 1 MW ±1% in parallel with 13 pF ±2 pF, TekProbe compatible Maximum voltage at input i t BNC NC (1 MW) W) Overvoltage category Maximum voltage CAT I Environment (refer to page A–12) 150 VRMS (400 Vpk) CAT II Environment (refer to page A–12) 100 VRMS (400 Vpk) 50 W ±1%; VSWR ≤ 1.
Appendix A: Specifications Specifications (Cont.
Appendix A: Specifications Specifications (Cont.) Vertical Peak detect or Envelope pulse reo e typical t ic l sponse, Minimum width of pulse with amplitude of ≥2 div to capture 50% or greater amplitude Sample rates ≤125 MS/s Sample rates ≥250 MS/s 1 ns 1/sample rate DC gain accuracy ± 2%, derated at 0.
Appendix A: Specifications Specifications (Cont.) Horizontal Acquisition (horizontal) resolution Normal Fast trigger Record length 10,000 points 500 points Acquisition rate, maximum Up to 450 waveforms/s Up to 3,000 waveforms/s Acquisition resolution TDS3012 TDS3014 TDS3032 TDS3034 TDS3052 TDS3054 Normal 100 S/s to 1 GS/s 100 S/s to 2.5 GS/s 100 S/s to 5 GS/s Fast trigger 5 S/s to 1.25 GS/s 5 S/s to 2.
Appendix A: Specifications Specifications (Cont.) Trigger Edge trigger e itivit sensitivity Source Sensitivity Any channel, DC coupled 0.35 div from DC to 50 MHz, increasing to 1 div at oscilloscope bandwidth Edge trigger sensitivity, typical External trigger 100 mV from DC to 50 MHz, increasing to 500 mV at 300 MHz External/10 trigger 500 mV from DC to 50 MHz, increasing to 3 V at 300 MHz Any channel, NOISE REJ coupled 3.5 times the DC-coupled limits Any channel, HF REJ coupled 1.
Appendix A: Specifications Specifications (Cont.) Trigger Trigger level accuracy, t ic l typical Trigger holdoff range Source Sensitivity Any channel ±0.2 divisions External trigger ±20 mV External/10 trigger ±200 mV Line N/A 250.8 ns to 10 s Video trigger sensitivity, Triggers on negative sync of NTSC, PAL, or SECAM signal t ic l typical Source Sensitivity Any channel 0.6 to 2.5 divisions of video sync tip External trigger 150 mV to 625 mV of video sync tip External/10 trigger 1.
Appendix A: Specifications Specifications (Cont.) Display Display screen 6.
Appendix A: Specifications Specifications (Cont.
Appendix A: Specifications Specifications (Cont.) Environmental Altitude Operating limit: 3000 m Nonoperating limit: 15,000 m Random vibration Operating: 0.31 gRMS from 5 Hz to 500 Hz, 10 minutes on each axis Nonoperating: 2.46 gRMS from 5 Hz to 500 Hz, 10 minutes on each axis Drop resistance, typical Survives a 152 mm (6 in) drop onto concrete with only cosmetic damage Mechanical Size Height: 176 mm (6.9 in), 229 mm (9.0 in) including handle Width: 375 mm (14.75 in) Depth: 149 mm (5.
Appendix A: Specifications Specifications (Cont.) EMC certifications and compliances EMC Compliance: European Union EMC Compliance: Australia/New Zealand Meets intent of Directive 89/336/EEC for Electromagnetic Compatibility.
Appendix A: Specifications Specifications (Cont.
Appendix B: Factory Setup The table below lists the state of the oscilloscope after you recall the Factory Setup. Control Changed by factory setup to Acquire horizontal resolution Normal (10,000 points) Acquire mode Sample Acquire number of averages 16 Acquire number of envelopes 16 Acquire run/stop Run Acquire single sequence Off Channel selection Channel 1 on, all others off Coarse No change Confirm delete No change Cursor function Off Cursor H Bar 1 position –3.
Appendix B: Factory Setup B–2 Control Changed by factory setup to Display graticule type Full Display backlight High Display color palette Normal Dual waveform math function Ch 1 + Ch 2 Edge trigger coupling DC Edge trigger level 0.
Appendix B: Factory Setup Control Changed by factory setup to Overwrite lock No change Reference waveforms No change Saved setups No change Trigger holdoff 250.
Appendix B: Factory Setup B–4 TDS3000 Series User Manual
Appendix C: Accessories Standard Accessories P3010 10X passive probes (TDS3012 and TDS3014) The P3010 10X passive probes have 100 MHz bandwidth and a CAT II voltage rating of 300 VRMS. P6139A 10X passive probes (TDS3032, TDS3034, TDS3052 and TDS3054) The P6139A 10X passive probes have 300 MHz or 500 MHz bandwidth and a CAT II voltage rating of 300 VRMS. Front cover The front cover (200-4416-00) snaps onto the front of the oscilloscope to protect it during transit.
Appendix C: Accessories Optional Accessories TDS3FFT FFT application package (standard with TDS3014, TDS3034, and TDS3054) The FFT application package adds FFT analysis and measurement capability to your oscilloscope. Application packages can be installed by the user.
Appendix C: Accessories Optional Accessories (Cont.) TDS3VM VGA/RS-232 communication module This communication module adds VGA and RS-232 ports to your oscilloscope. You can attach a printer to the RS-232 port or use it for remote programmability. You can attach a monitor to the VGA port to enhance viewing the screen from a distance. Communication modules can be installed by the user and include the TDS3000-Series Programmer Manual (in English only).
Appendix C: Accessories Optional Accessories (Cont.) AC3000 soft case The soft case protects the oscilloscope when not in use. The soft case provides compartments for probes, one spare battery, battery charger, and the User Manual. RM3000 rack mount kit The rack mount kit contains all the hardware necesary to mount your oscilloscope in a standard rack. The kit requires 7 in of vertical space in the rack.
Appendix D: Probe Basics This chapter contains basic information about the P3010 or P6139A probes provided with your TDS3000 Series oscilloscope. It also contains information about other probes you can use with your oscilloscope and their limitations. Probe Descriptions The P3010 and P6139A are high-impedance passive probes with the following general characteristics. Characteristic P3010 P6139A Cable length 2m 1.
Appendix D: Probe Basics Probe Compensation You should compensate a probe to an oscilloscope input whenever you attach a probe for the first time to any input channel. See page 1–3 for instructions to compensate probes. When compensating the P3010, only adjust the trimmer marked L. L TekProbe Interface Probes with the TekProbe interface automatically communicate with the oscilloscope to set the probe type and attenuation factor.
Appendix D: Probe Basics Probe Guard A guard around the probe body provides a finger barrier for protection from electric shock. Guard WARNING. To avoid electric shock when using the probe, keep fingers behind the guard on the probe body. To avoid electric shock when using the probe, do not touch metallic portions of the probe head while connected to a voltage source. Ground Leads Always use a ground lead when you probe a circuit to minimize noise pickup and signal aberrations.
Appendix D: Probe Basics P3010 High-Frequency Compensation The P3010 high-frequency compensation should seldom require adjustment; however, your probe may require high-frequency adjustment if either of the following are true: the probe has high-frequency aberrations the probe does not perform at the rated bandwidth To perform the high-frequency compensation adjustment you will need a signal source that has all of the following characteristics: tr<1 ns 1 MHz 90% >1 Vp-p 10% square-wave output at 1
Appendix D: Probe Basics Connect the P3010 to the signal source to display a 1 MHz test signal on your oscilloscope. Use the BNC-to-probe tip adapter (013-0277-00) to make the connection. (The display should be similar to that shown below). 10 ns H H (a) Area Of Waveform Affected By Adjustment (b) Location of Adjustment Adjust trimmer H until the waveform is flat on top and has a square leading edge.
Appendix D: Probe Basics P3010 Replaceable Parts and Accessories 2 1 3 4 5 6 Standard Accessories 7 8 9 Optional Accessories D–6 TDS3000 Series User Manual
Appendix D: Probe Basics P3010 replaceable parts and accessories Index number Description Part number 1 Retractable hook tip 013-0107-08 2 Probe tip 131-4997-01 3 Ground lead, 6 in 196-3120-01 4 Marker set (four colors, two each) 016-0633-00 5 Adjustment tool 003-1433-01 6 BNC-to-probe tip adapter 013-0277-00 7 Ground lead, 28 in 196-3120-21 8 Ground lead, 12 in 196-3121-01 9 IC test tip, package of 10 015-0201-07 TDS3000 Series User Manual D–7
Appendix D: Probe Basics P6139A Replaceable Parts and Accessories 5 1 6 4 11 3 12 2 13 14 10 7 8 9 Standard Accessories 16 17 18 19 15 Optional Accessories D–8 TDS3000 Series User Manual
Appendix D: Probe Basics P6139A replaceable parts and accessories Index number Description Part number 1 Compensation box assembly 206-0440-00 2 BNC connector 131-3219-00 3 Cable cover nipple 200-3018-00 4 Cable assembly 174-0978-00 5 Ground collar 343-1003-01 6 Ground lead, 6 in 196-3113-02 7 Ground lead, 2.
Appendix D: Probe Basics Using Other Probes Optional probes can add capabilities to your oscilloscope that are useful in many applications. Passive Probes You can use the following passive probes without any limitations.
Appendix D: Probe Basics Supported Active Probes The oscilloscope supplies power to active probes. You can use the following active probes as long as the total power required by the probes does not exceed the capacity of the oscilloscope. To determine the total probe load, add the load factors for all probes you want to use. The oscilloscope can supply power to this combination if the sum of the load factors equals 10 or less. All passive probes have a load factor of zero.
Appendix D: Probe Basics Unsupported Probes The TDS3000 Series only supports the probes listed in this section of the manual. The oscilloscope may not display a message when you connect an unsupported probe, so make sure that any probe you connect to the TDS3000 is supported.
Appendix E: Performance Verification This appendix contains performance verification procedures for the specifications marked with the symbol. The following equipment, or a suitable equivalent, is required to complete these procedures. Description DC Voltage Source Minimum requirements 3 mV to 4 V, ±0.
Appendix E: Performance Verification Test Record Serial number Procedure performed by Test Date Passed Failed Test result High limit Self Test E–2 Performance checks Low limit Channel 1 1 mV/div DC C me reme t 2 mV/div measurement accuracy cc r c 5 mV/div 99.25 mV 100.8 mV –7.540 mV –6.460 mV –101.8 mV –98.24 mV 50 mV/div 982.4 mV 1.018 V 50 mV/div 632.4 mV 667.6 mV 50 mV delta 340.5 mV 359.5 mV 90 mV/div –339.3 mV –290.7 mV 200 mV/div 9.900 V 10.10 V 1 V/div –10.
Appendix E: Performance Verification Performance checks Low limit Channel 2 1 mV/div DC C me reme t 2 mV/div measurement accuracy cc r c 5 mV/div 99.25 mV 100.8 mV –7.540 mV –6.460 mV –101.8 mV –98.24 mV 50 mV/div 982.4 mV 1.018 V 50 mV/div 632.4 mV 667.6 mV 50 mV delta 340.5 mV 359.5 mV 90 mV/div –339.3 mV –290.7 mV 200 mV/div 9.900 V 10.10 V 1 V/div –10.30 V –9.698 V 99.25 mV 100.8 mV –7.540 mV –6.460 mV –101.8 mV –98.24 mV 50 mV/div 982.4 mV 1.018 V 50 mV/div 632.
Appendix E: Performance Verification Performance checks Low limit Channel 4 1 mV/div DC C me reme t 2 mV/div measurement accuracy cc r c 5 mV/div 99.25 mV 100.8 mV –7.540 mV –6.460 mV –101.8 mV –98.24 mV 50 mV/div 982.4 mV 1.018 V 50 mV/div 632.4 mV 667.6 mV 50 mV delta 340.5 mV 359.5 mV 90 mV/div –339.3 mV –290.7 mV 200 mV/div 9.900 V 10.10 V 1 V/div –10.30 V –9.
Appendix E: Performance Verification Performance Verification Procedures Before beginning these procedures, two conditions must first be met: The oscilloscope must have been operating continuously for ten minutes in an environment the meets the operating range specifications for temperature and humidity. You must perform the Compensate Signal Path operation described on page 1–4. If the operating temperature changes by more than 10° C, you must perform the Compensate Signal Path operation again.
Appendix E: Performance Verification Self Test This procedure uses internal routines to verify that the oscilloscope functions and passes its internal self tests. No test equipment or hookups are required. Start the self test with these steps: 1. Disconnect all probes and cables from the oscilloscope inputs. 2. Push the UTILITY menu button. 3. Push the System screen button to select Diags. 4. Push the Loop screen button and choose Once. 5. Push the Execute screen button. 6.
Appendix E: Performance Verification Check DC Voltage Measurement Accuracy This test checks the DC voltage measurement accuracy in the average acquisition mode. 1. Set the DC voltage source output level to 0 V. 2. Connect the DC voltage source to the oscilloscope channel 1 input as shown below. DC voltage source TDS3000 Series Oscilloscope Ch 1 3. Push the SAVE/RECALL menu button. 4. Push the Recall Factory Setup screen button and then push the OK Confirm Factory Init screen button. 5.
Appendix E: Performance Verification 9. Move the DC voltage source output cable to the oscilloscope channel you want to check. 10. Push the channel button (CH 1, CH 2, CH 3, or CH 4) for the channel you want to check. 11. Push the MEASURE menu button. 12. Push the Select Measurement screen button. 13. Push the – more – screen button until you can select the Mean measurement. 14. Push the vertical MENU button. 15. For each row of the table on page E-9, do these steps: a.
Appendix E: Performance Verification Vertical SCALE setting Invert setting Bandwidth limit setting Offset Input voltage Low limit High limit 1 mV/div Off 20 MHz 96.5 mV 100 mV 99.25 mV 100.8 mV 2 mV/div Off 20 MHz 0.0 V –7 mV –7.540 mV –6.460 mV 5 mV/div Off 20 MHz –82.5 mV –100 mV –101.8 mV –98.24 mV 50 mV/div Off Full 825 mV 1.0 V 982.4 mV 1.018 V 50 mV/div Off Full 825 mV 650 mV 632.4 mV 667.6 mV 340.5 mV 359.5 mV 50 mV delta1 90 mV/div 2 Off Full 0.
Appendix E: Performance Verification Check Bandwidth This test checks the bandwidth for each channel. 1. Connect the output of the leveled sine wave generator to the oscilloscope channel 1 input as shown below. Leveled sine wave generator TDS3000 Series Oscilloscope Ch 1 2. Push the SAVE/RECALL menu button. 3. Push the Recall Factory Setup screen button and then push the OK Confirm Factory Init screen button. 4. Push the acquire MENU button. 5.
Appendix E: Performance Verification 11. Move the output cable of the leveled sine wave generator to the oscilloscope channel you want to check. 12. Push the channel button (CH 1, CH 2, CH 3, or CH4) for the channel you want to check. 13. Set the horizontal SCALE to 10 ms/div. 14. Push the vertical MENU button. 15. Push the Coupling screen button and select 50 W input resistance. 16. Push the MEASURE menu button. 17. Push the Select Measurement screen button. 18.
Appendix E: Performance Verification 24. Verify that the peak-to-peak measurement is ≥425 mV. 25. Push the waveform off button. 26. Repeat steps 11 through 25 for each channel of the oscilloscope (not including the external trigger input on some models).
Appendix E: Performance Verification Check Channel Edge-Trigger Sensitivity This test checks the edge-trigger sensitivity for each channel. 1. Connect the output of the leveled sine wave generator to the oscilloscope channel 1 input as shown below. Leveled sine wave generator TDS3000 Series Oscilloscope Ch 1 2. Push the SAVE/RECALL menu button. 3. Push the Recall Factory Setup screen button and then push the OK Confirm Factory Init screen button. 4. Push the acquire MENU button. 5.
Appendix E: Performance Verification 11. Move the output cable of the leveled sine wave generator to the oscilloscope channel you want to check. 12. Push the channel button (CH 1, CH 2, CH 3, or CH4) for the channel you want to check. 13. Push the vertical MENU button. 14. Push the Coupling screen button and select 50 input resistance. 15. Push the MEASURE menu button. 16. Push the Select Measurement screen button. 17. Push the – more – screen button until you can select the Pk–Pk measurement. 18.
Appendix E: Performance Verification 20. Set the output amplitude of the leveled sine wave generator so the peak-to-peak measurement is approximately 500 mV. 21. Push the SET TO 50% button. Adjust the trigger LEVEL as necessary and then verify that triggering is stable. 22. Push the trigger MENU button. 23. Push the Slope screen button and select the \ (falling) slope. 24. Push the SET TO 50% button. Adjust the trigger LEVEL as necessary and then verify that triggering is stable. 25.
Appendix E: Performance Verification Check Sample Rate and Delay Time Accuracy This test checks the time base accuracy. 1. Connect the output of the leveled sine wave generator to the oscilloscope channel 1 input as shown below. Time mark generator TDS3000 Series Oscilloscope Ch 1 2. Push the SAVE/RECALL menu button. 3. Push the Recall Factory Setup screen button and then push the OK Confirm Factory Init screen button. 4. Set the time mark generator period to 10 ms.
Appendix E: Performance Verification 9. Set the vertical SCALE to 500 mV/div. 10. Set the horizontal SCALE to 2 ms/div. 11. Adjust the vertical POSITION control to center the time mark signal on the screen. 12. Adjust the trigger LEVEL as necessary to obtain a triggered display. 13. Adjust the horizontal POSITION control to move the trigger location to the center of the screen (50%). 14. Push the DELAY button to turn delay on. 15.
Appendix E: Performance Verification E–18 TDS3000 Series User Manual
Appendix F: General Care and Cleaning General Care Protect the oscillscope from adverse weather conditions. The oscilloscope is not water resistant. Do not store or leave the oscilloscope where the LCD display will be exposed to direct sunlight for long periods of time. CAUTION. To avoid damage to the oscilloscope, do not expose it to sprays, liquids, or solvents. Cleaning Inspect the oscillosope as often as operating conditions require. To clean the oscilloscope exterior, perform the following steps: 1.
Appendix F: General Care and Cleaning F–2 TDS3000 Series User Manual
Glossary
Glossary AC Coupling A mode that blocks the DC component of a signal but passes the dynamic (AC) component of the signal. Useful for observing an AC signal that is normally riding on a DC signal. Acquisition The process of sampling signals from input channels, digitizing the samples, processing the results into data points, and assembling the data points into a waveform record. The waveform record is stored in memory. Active Cursor The cursor that moves when you adjust the general purpose knob.
Glossary Attenuation The degree the amplitude of a signal is reduced when it passes through an attenuating device such as a probe or attenuator (the ratio of the input measure to the output measure). For example, a 10X probe attenuates, or reduces, the input voltage of a signal by a factor of 10. Auto Trigger Mode A trigger mode that causes the oscilloscope to automatically acquire if it does not detect a valid trigger event.
Glossary DC Coupling A mode that passes both AC and DC signal components to the circuit. Available for both the trigger system and the vertical system. Communication Module A optional module that adds I/O ports to the oscilloscope. Delay A means to delay the acquisition to start long after the trigger event has occurred. The trigger point does not have to be within the waveform record when delay is on.
Glossary Edge Trigger Triggering that occurs when the oscilloscope detects the source passing through a specified voltage level in a specified direction (the trigger slope). Envelope Acquisition Mode A mode in which the oscilloscope acquires and displays a waveform that shows the variation extremes of several acquisitions. External Trigger Triggering that occurs when the oscilloscope detects the external input signal passing through a specified voltage level in a specified direction (the trigger slope).
Glossary Ground (GND) Coupling Coupling option that disconnects the input signal from the vertical system. Ground Lead The reference lead for an oscilloscope probe. Ground Wire A wire that must be connected between the ground terminal and earth ground when using the oscilloscope with battery power. Hard Copy An electronic copy of the display in a format useable by a printer or plotter.
Glossary Normal Trigger Mode A mode where the oscilloscope does not acquire a waveform record unless a valid trigger event occurs. It waits for a valid trigger event before acquiring waveform data. Peak Detect An acquisition mode that captures spikes and glitches that may occur between normal sample points. Persistence The decay of waveform points. With persistence turned off, the points decay quickly. With persistence on, the points decay more slowly or not at all, depending on the setting.
Glossary Roll Mode An acquisition mode useful at slow horizontal scale settings. Roll mode allows you to view the waveform as it is acquired point-by-point. The waveform appears to roll across the display. RS-232 The serial communication port used to connect to a hard-copy device, computer, controller, or terminal. Sample Acquisition Mode A mode in which the oscilloscope creates a record point by saving the first sample during each acquisition interval. This is the default mode of the acquisition system.
Glossary Screen Buttons The rows of buttons below and to the right of the display that select items in the menus. Selected Waveform The waveform on which all measurements are performed and which is affected by vertical position and scale adjustments. Signal Path Compensation (SPC) The ability of the oscilloscope to minimize the electrical offsets in the vertical, horizontal, and trigger amplifiers caused by ambient temperature changes and component aging.
Glossary Tek Secure A feature that erases all waveform and setup memory locations (setup memories are replaced with the factory setup). Then it checks each location to verify erasure. This feature is useful where the oscilloscope is used to gather security-sensitive data. Time Base The set of parameters that let you define the time and horizontal axis attributes of a waveform record. The time base determines when and how long to acquire record points.
Glossary Glossary–10 TDS3000 Series User Manual
Index
Index Symbols .
Index cursors active, 3–12 application example, 2–12 gating, 2–8, 3–35 interactions, 3–36 locating, 3–14 measurements, 2–12 measurements when cursors at same position, 3–16 menu, 3–12 readouts, 3–15 tracking mode, 3–16 V Bars and FFT measurements, 3–16 cycle mean measurement, 3–37 cycle RMS measurement, 3–37 D date/time, how to use, 3–62 delay example application, 2–13 how to use, 3–27 interactions, 3–28, 3–31, 3–32 DELAY button, 3–27 deskew, probe, 3–72 diagnostics, 3–68 digital phosphor, 3–5 disk, onlin
Index G L gated xyz, 3–20 GPIB, 3–66 communication module, C–2 gray scale application example, 2–19 controlling, 3–5 losing information, 3–30 measurements, 3–15 restrictions, 3–75, 3–77 language, how to select, 3–61 H hard copy.
Index P peak detect, 3–7 peak-to-peak measurement, 3–38 performance verification, E–1 period measurement, 3–38 persistence, 3–19 positive duty cycle measurement, 3–38 positive overshoot measurement, 3–38 positive width measurement, 3–38 power AC line, 1–9 battery, 1–10 probe, D–11 power cord, 1–9 power off timeout, 3–62 pretrigger, 3–25 preview application example, 2–21 horizontal, 3–30 vertical, 3–73 printing color, 3–23 connections, 3–21 date/time stamp, 3–24 error message, 3–24 hard copy file compressio
Index saved waveforms formats, 3–44 naming, 3–44 printing, 3–46 SELECT button, 3–14 self test, 3–68 SET TO 50% button, 3–49 signal path compensation, 1–4, 3–67 signal processing, overview, 1–5 SINGLE SEQ button, 3–3 single shot, 3–3 application example, 2–20 slow roll mode, 3–31 specifications, A–1 status acquisition, 3–2 trigger, 3–54 stopped acquisition, 3–2 T Tek Secure, how to use, 3–63 TekProbe interface, 3–72, D–2 time base controlling, 3–29 fast settings, 3–31 time-out, 3–62 trigger auto, 3–57 edge
Index Z zoom application example, 2–22 how to use, 3–29 interactions, 3–30 maximum, 3–30 Index–6 TDS3000 Series User Manual
