Tektronix TLS 216 User Manual

Logic scope

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Table of Contents

Summary of Contents for Tektronix TLS 216

Page 1 T h e t e s t & me a s u r e me n t e q u i p me n t y o u n e e d a t t h e p r i c e y o u w a n t . A l l t e s t I n s t r u me n t s , I n c .
Page 2 User Manual TLS 216 Logic Scope 070-8834-01 This document supports firmware version 1.0.2e and above.
Page 6 8444 AB Heerenveen The Netherlands declare under sole responsibility that the TLS 216 Logic Scope meets the intent of Directive 89/336/EEC for Electromagnetic Compatibility. Compliance was demonstrated to the following specifications as listed in the Official Journal of the European Communities:...
Page 8: Table Of Contents
........3–61 TLS 216 User Manual...
Page 9 ......C–1 Appendix D: Factory Initialization Settings ..... D–1 Glossary Index TLS 216 User Manual...
Page 10: Table Of Contents
Figure 3-3: Vertical Controls ....... . . 3–8 TLS 216 User Manual...
Page 11 ..........3–84 TLS 216 User Manual...
Page 12 Figure 3-75: State Trigger Menu ......3–167 TLS 216 User Manual...
Page 13 ......... . B–16 TLS 216 User Manual...
Page 14 ....... A–4 Table D–1: Factory Initialization Defaults ..... . D–1 TLS 216 User Manual...
Page 15 Table of Contents viii TLS 216 User Manual...
Page 16: Safety Summary
DANGER indicates a personal injury hazard immediately accessible as one reads the marking. This symbol appears in manuals: Static-Sensitive Devices These symbols appear on equipment: DANGER Protective ground ATTENTION High Voltage (earth) terminal Refer to manual TLS 216 User Manual...
Page 17 Provide Proper Ventilation To prevent overheating, keep the logic scope ventilation holes free from obstruction. Do Not Operate With If you suspect the logic scope is damaged, have it inspected by a qualified Suspected Failures service person. TLS 216 User Manual...
Page 18 Preface This is the User Manual for the TLS 216 Logic Scope. Section 1 Getting Started familiarizes you with the operation of your logic scope. Section 2 Operating Basics covers basic principles of the operation of the logic scope. The topics covered help you understand why your logic scope operates the way it does.
Page 19 GPIB interface. The TLS 216 Reference (Tektronix part number 070-8833-XX) gives you a quick overview of how to operate your logic scope. The TLS 216 Performance Verification and Specifications Technical Reference (Tektronix part number 070-8832-XX) tells how to verify the performance of the logic scope.
Page 20: Getting Started
Getting Started...
Page 21: Product Description
Product Description The Tektronix TLS 216 Logic Scope is a superb tool for analyzing and debug- ging digital circuits. Its performance addresses the needs of digital designers and troubleshooters of such circuits with the following features: sixteen channels, equipped with sixteen 2.5 pF FET probes, for acquiring waveforms from digital circuits three display modes —...
Page 22 Product Description Product Specification The product specification is found in the TLS 216 Performance Verification and Specifications Technical Reference which is shipped as a standard accessory with the TLS 216 Logic Scope. 1–2 TLS 216 User Manual...
Page 23: Start Up
Start Up Before you use the TLS 216 Logic Scope, ensure that it is properly installed and powered on. Before You Begin To ensure maximum accuracy for your most critical measurements, you should know about signal path compensation. Be sure you compensate your logic scope for the surrounding temperature. This action, called Signal Path Compensation (SPC), ensures maximum possible accuracy for your most critical measurements.
Page 24 Power continues to go to certain parts even when this switch is set to STBY. Once the logic scope is installed, it is typical to leave the principal power switch on and use the ON/STBY button as the power switch. 1–4 TLS 216 User Manual...
Page 25 (If the self test passed, the logic scope removes the status display screen after a few seconds.) If the self test fails, call your local Tektronix Service Center. Depending on the type of failure, you may still be able to use the logic scope before it is serviced.
Page 26 Start Up 1–6 TLS 216 User Manual...
Page 27: Setting Up For Examples
Setting Up for Examples Perform the following tasks to connect input signals to the TLS 216 Logic Scope, to reset it, and to become acquainted with its display screen. Once completed, these tasks ready the logic scope for use in the examples that follow.
Page 28 Because an accidental instrument reset could destroy a setup that took a long time to create, the logic scope asks you to verify the Recall Factory Setup selection. (See Figure 1-5.) 1–8 TLS 216 User Manual...
Page 29 The trigger threshold bar shows that the logic scope triggered the waveform at a threshold level near 50% of its amplitude (from step 4). The trigger position indicator shows that the trigger position of the waveform is located at the horizontal center of the graticule. 1–9 TLS 216 User Manual...
Page 30 Right now, the channel, time base, and trigger readouts appear in the graticule area to make room for display of the menu. You can press the CLEAR MENU button any time to remove any menus and to move the readouts below the graticule. 1–10 TLS 216 User Manual...
Page 31: Example 1: Displaying Waveforms
Example 1: Displaying Waveforms The TLS 216 Logic Scope can be operated as a full-featured digitizing storage oscilloscope with up to 16 live and 16 reference waveforms on screen. Do the following tasks to learn how to display individual waveforms, to adjust those waveforms individually, and how to use the Autoset function.
Page 32 NOTE. The logic scope still triggers on Channel 1. It does not change trigger source when adding (or removing) groups. (You can change the trigger source to any channel by using the TRIGGER MENU button to display the trigger menu.) 1–12 TLS 216 User Manual...
Page 33 4. Turn the horizontal SCALE knob one click clockwise. Observe the time base readout at the bottom of the display. With the time base set to 250 s/div now, you should see two complete waveform cycles on the display. 1–13 TLS 216 User Manual...
Page 34 (see Figure 1-11) first one direction, and then the other. Observe what happens when you move the trigger threshold level above the highest part of the displayed waveform. Leave the trigger threshold so the display remains untriggered. 1–14 TLS 216 User Manual...
Page 35 NOTE. Executing Autoset forces the display mode to Timing Diagram for all the groups displayed. A table of all default settings after an autoset appears on page 3–15. 1–15 TLS 216 User Manual...
Page 36 (one group must always be selected). 3. Press GROUP OFF again to end display of the Group 1 waveform. HINT: Although channels you remove are not acquired (sampled and digitized), you can still select them to provide sources for triggering. 1–16 TLS 216 User Manual...
Page 37: Example 2: Grouping Waveforms
Example 2: Grouping Waveforms The TLS 216 Logic Scope displays and controls waveforms as groups of one or more waveforms, with eight groups available for display at the same time. Once grouped, you can display waveforms as analog waveforms, or as digital levels on a bus (BusForms ), or as a timing diagram, depending on which display mode best helps you analyze your digital circuit.
Page 38 In addition to using the key pad, you can turn the general purpose knob or toggle the appropriate side menu button to set the first, last, and selected channels. Figure 1-14: Vertical Waveform Groups 1–18 TLS 216 User Manual...
Page 39 NOTE. Adjusting the Vertical SCALE and POSITION knobs scales and positions all waveforms in the groups regardless of whether ANALOG ALL or ANALOG SELECTED is set in the Group Mode menu. 1–19 TLS 216 User Manual...
Page 40 TTL level at all times.) Side Menu Title Group 6, Timing Mode, Ch 6 – Ch 3 Figure 1-15: Group 6 Displayed as a Timing Diagram 1–20 TLS 216 User Manual...
Page 41 4. Read the binary value of all acquired waveforms in the cursor readout (see Figure 1-16). The most significant bit (left-most bit in the readout) corre- sponds to the highest numbered channel currently acquired. Cursor Readout Active Cursor Figure 1-16: Binary Value of a Group 1–21 TLS 216 User Manual...
Page 42 In that case, use the GROUP OFF button to turn the display of the selected group off. To later restore display of the group, select it and turn it on in the Display Group Mode menu (press GROUP MENU). 1–22 TLS 216 User Manual...
Page 43: Example 3: Taking Measurements Automatically
Example 3: Taking Measurements Automatically The TLS 216 Logic Scope can measure many waveform parameters automatical- ly and read out the numeric results on screen. Do the following tasks to discover how to select various measurements, to take them on various waveforms, and to display a snapshot of most measurements.
Page 44 Observe from the measurement readouts that the logic scope takes all three measurements on the channel you just selected, Channel 2. 11. To move the measurement readouts outside the graticule area, press CLEAR MENU. (See Figure 1-18.) 1–24 TLS 216 User Manual...
Page 45 By default, the measurement system will use the 10% and 90% levels of the waveform for taking the rise time measurement. You can change these values to other percentages or change them to absolute voltage levels. To examine the current values, press Reference Levels (main) High Ref (side). 1–25 TLS 216 User Manual...
Page 46 NOTE. To make large changes quickly with the general purpose knob, press the SHIFT button before turning the knob. When the light above the SHIFT button is lit and the display says Coarse Knobs in the upper-right corner, the general purpose knob speeds up significantly. 1–26 TLS 216 User Manual...
Page 47 The snapshot measurements do not continuously update. Snapshot executes a one-time capture of all measurements and does not update those measure- ments unless you execute another snapshot. 1–27 TLS 216 User Manual...
Page 48 2. Press Again (side) to do another snapshot and update the snapshot measure- ments. 3. Press Remove Measrmnt (main) to remove the snapshot display. (You can also press CLEAR MENU, but a new snapshot will be executed the next time you display the Measure menu.) 1–28 TLS 216 User Manual...
Page 49: Example 4: Saving Setups
Example 4: Saving Setups The TLS 216 Logic Scope can save its control settings and recall them later to quickly re-establish the previously saved setup. The logic scope provides several storage locations where you can save the setups. Do the following tasks to save a setup and then to recall it.
Page 50 (in step 8, above) should appear in the recalled setup. This completes the examples. To restore the default settings, press Save/Recall SETUP Recall Factory Setup (main) OK Confirm Factory Init (side). 1–30 TLS 216 User Manual...
Page 51: Operating Basics
Operating Basics...
Page 52 Overview This section describes the basic concepts of operating the TLS 216 Logic Scope. Understanding the basic concepts of your logic scope will help you use it much more effectively. The first part, At a Glance, quickly shows you how the logic scope controls are organized and gives some very general operating instructions.
Page 53 Overview 2–2 TLS 216 User Manual...
Page 54: At A Glance
This section also contains a visual guide to using the menu system. Front Panel Map — Left Side Side Menu Buttons, page 2–7 CLEAR MENU Removes Menus from the Display ON/STBY Switch, Main Menu Buttons, page 1–3 page 2–7 2–3 TLS 216 User Manual...
Page 55 Triggering After Delay, page 3–121 Triggering on Edges, page 3–127 Triggering on Patterns, page 3–131 Triggering on a Sequence, page 3–147 Triggering on Pulses, page 3–141 Adjusting the Horizontal Setup, Doing a Probe Cal, page 3–3 page 3–49 2–4 TLS 216 User Manual...
Page 56 Principal Power Switch, Centronics RS-232 GPIB Connector page 1–3 Connector Connector page 3–31 Fuse, Serial Number Power Connector, VGA Output Auxiliary Trigger Input, Main Security page 1–3 page 1–3 Trigger and Delayed Trigger Bracket Outputs (TTL) 2–5 TLS 216 User Manual...
Page 57 Group readout by number, Time base type, last and first channel, and horizontal scale, scale or display mode, and trigger type, page 3–56 page 3–3 and 3–159 The main menu with choices of major actions 2–6 TLS 216 User Manual...
Page 58 3. Press one of these buttons to select from side menu (if displayed). 4. If side menu item has an adjustable value (shown in reverse video), adjust it with the general purpose knob or keypad. 2–7 TLS 216 User Manual...
Page 59 At a Glance To Operate a Pop-Up Menu Press Press here to to display pop-ups. remove menus from screen. Press it again to advance to the next selection. A pop-up selection changes the other main menu titles. 2–8 TLS 216 User Manual...
Page 60 (see pages 3–121 and 3–127) Delayed Trigger Menu – Pulse (see pages 3–121 and 3–141) Delayed Trigger Menu – Pattern (see pages 3–121 and 3–131) Delayed Trigger Menu – Sequence (see pages 3–121 and 3–147) 2–9 TLS 216 User Manual...
Page 61 3–35) Group Menu (see pages 3–23 and 3–55) Hardcopy Menu (see page 3–87) Horizontal Menu (see page 3–3) Main Trigger Menu – Edge (see page 3–127) Main Trigger Menu – Pulse (see page 3–141) 2–10 TLS 216 User Manual...
Page 62 Main Trigger Menu – Sequence (see page 3–147) Measure Menu (see page 3–67) More Menu (see page 3–117) Save/Recall Setup Menu (see page 3–105) Save/Recall Waveform Menu (see page 3–109) Status Menu (see page 3–173) 2–11 TLS 216 User Manual...
Page 63 3–108 and 3–89) Utility Menu – Diagnostics see the Service manual) Utility Menu – I/O – GPIB (see page 3–31) Utility Menu – I/O – RS232 (see page 3–31) Zoom Menu see page 3–175) 2–12 TLS 216 User Manual...
Page 64 This section describes the edge trigger of the main trigger system and explores, in a general sense, the topic of triggering. The TLS 216 Logic Scope also has pulse, pattern, state, and sequence triggers for triggering on digital and pulse waveforms, and a delayed trigger system.
Page 65 Triggering occurs when the Boolean conditions are first satisfied, for the start event and then for the end event, relative to a time limit or time range you specify. 2–14 TLS 216 User Manual...
Page 66 Not all of these will result in the same display. The holdoff period allows the logic scope to trigger on the correct edge, resulting in a stable display. 2–15 TLS 216 User Manual...
Page 67 By analyzing what happened before the glitch, you may uncover clues about its source. 2–16 TLS 216 User Manual...
Page 68 See Trigger on Edges, on page 3–127, to learn how to trigger on the edge of a input signal. See Triggering on Patterns, on page 3–131, to learn how to trigger on an input pattern of logic levels you define. 2–17 TLS 216 User Manual...
Page 69 See Triggering on States, on page 3–165, to learn how to trigger on an input pattern of logic levels that are TRUE at the active edge of a clock signal. 2–18 TLS 216 User Manual...
Page 70 Acquisition Acquisition is the process of sampling the analog input signal, converting it into digital data, and assembling it into a waveform record. The TLS 216 Logic Scope creates a digital representation of the input signal by sampling the voltage level of the signal at regular time intervals.
Page 71 NOTE. When using either type of interpolation, you may wish to set the display style so that the real samples are displayed intensified relative to the interpolated samples. The instructions under To Choose a Display Style on page 3–36 explain how to turn on intensified samples. 2–20 TLS 216 User Manual...
Page 72 (that is, with less than 3 dB attenuation). You can set different bandwidths with the logic scope. Lower bandwidth settings let you eliminate the higher frequency components of a signal. The TLS 216 offers Full (500 MHz) and 20 MHz bandwidth settings.
Page 73 Acquisition 2–22 TLS 216 User Manual...
Page 74: Scaling And Positioning Waveforms
Since the TLS 216 Logic Scope controls groups of waveforms, it scales and positions all waveforms in the group at the same time. This section discusses how to scale and position waveform groups in Analog mode.
Page 75 SCALE knob and the horizontal position using the horizontal POSITION knob. The logic scope shows the actual scale in the bottom right of the display. The scale readout shows the time per division used. Since all groups containing live 2–24 TLS 216 User Manual...
Page 76 (after time, events, or both) acquisitions. The delayed time base is useful in catching events that follow other events. See Triggering on page 2–13 for more information on the delayed trigger. 2–25 TLS 216 User Manual...
Page 77 See Triggering After Delay, on page 3–121, to learn how to set up to capture an event that occurs after another. See Zooming on Waveforms, on page 3–175, to learn how to magnify on screen the waveform groups you acquire. 2–26 TLS 216 User Manual...
Page 78 Measurements The TLS 216 Logic Scope not only displays graphs of voltage versus time, it also can help you measure the displayed information. (See Figure 2-8.) Cursor Automated Readouts Measurements Graticule C1 Freq 100 MHz C1 Period 10 ns Cursors...
Page 79 There are also two modes for cursor operation available in the cursor menu: independent and tracking. (See Figure 2-9.) Independent Mode Only Selected Cursor Moves Tracking Mode Both Cursors Move in Tandem Figure 2-9: Cursor Modes 2–28 TLS 216 User Manual...
Page 80 To Find More Information See Appendix B: Algorithms, for details on how the logic scope calculates each automatic measurement. See Example 3: Automated Measurements, on page 1–23, for a tutorial on automatic measurements. 2–29 TLS 216 User Manual...
Page 81 Measurements See Measuring Waveforms Automatically, on page 3–67, to learn more detail about taking automatic measurements. See Measuring Waveforms with Cursors, on page 3–81, to learn how to take cursor measurements. 2–30 TLS 216 User Manual...
Page 82 Reference...
Page 83 Managing the File System Measuring Waveforms Automatically Measuring Waveforms with Cursors Printing a Hardcopy Probing of Circuits Saving and Recalling Setups Saving and Recalling Waveforms Selecting Groups and Channels Triggering After Delay Triggering on Edges Triggering on Patterns 3–1 TLS 216 User Manual...
Page 84 Viewing Help Viewing Status Zooming on Waveforms NOTE. Many of these operating tasks list steps you perform to accomplish the task. You should read Conventions in the Preface to this manual before reading about these tasks. 3–2 TLS 216 User Manual...
Page 85: Adjusting The Horizontal Setup
Adjusting the Horizontal Setup The TLS 216 Logic Scope lets you scale (change the time base) and position waveform groups horizontally on the screen. To perform these basic operations, you use the horizontal knobs and menu. This article describes how to check the current horizontal setup and how to use...
Page 86 The Record View also shows the location of the trigger point relative to the display. (See Figure 3-2.) (It also shows cursor location if cursors are turned on.) Record View Trigger Point Indicator Time Base Readout Figure 3-2: Record View and Time Base Readout 3–4 TLS 216 User Manual...
Page 87 To change the horizontal scale (time per division) numerically in the menu instead of using the Horizontal SCALE knob, press HORIZONTAL MENU Horiz Scale (main) Main Scale or Delayed Scale (side), and use the keypad or the general purpose knob to change the scale values. 3–5 TLS 216 User Manual...
Page 88 See Zooming on Waveforms, on page 3–175 for the steps to set the horizontal lock feature. To Find More Information See Scaling and Positioning Waveforms, on page 2–23. See Triggering After Delay, on page 3–121. See Zooming on Waveforms, on page 3–175. 3–6 TLS 216 User Manual...
Page 89: Adjusting The Vertical Setup
Adjusting the Vertical Setup The TLS 216 Logic Scope allows you to scale (change the volts/division setting), position, and otherwise control waveform groups vertically on the screen. To perform these basic operations, you use the vertical knobs and the Group menu.
Page 90 To adjust the vertical position more quickly, press the SHIFT button. When the light above the SHIFT button is on and the display says Coarse Knobs in the upper right corner, the Horizontal POSITION knob speeds up significantly. Figure 3-3: Vertical Controls 3–8 TLS 216 User Manual...
Page 91 Position (side) and use the general purpose knob or keypad to set position in divisions. Press Set to Position 0 divs (side) if you want to reset the position of the selected group to center screen. 3–9 TLS 216 User Manual...
Page 92 DC bias. Changing position simply adjusts the display. Positioning cannot compensate for DC bias. To Find More Information See Choosing a Group Display Mode, on page 3–23. See Grouping Waveforms, on page 3–55. 3–10 TLS 216 User Manual...
Page 93 Adjusting the Vertical Setup See Selecting Groups and Channels, on page 3–117. See Scaling and Positioning Waveforms, on page 2–23. See Zooming on Waveforms, on page 3–175. 3–11 TLS 216 User Manual...
Page 94 Adjusting the Vertical Setup 3–12 TLS 216 User Manual...
Page 95: Autosetting The Logic Scope
Autosetting the Logic Scope The TLS 216 Logic Scope can autoset on waveform groups to quickly obtain a stable display of a waveform of usable size. Once you select a group and its channel, a single button press sets up the front-panel controls based on the signal in that channel.
Page 96 Because nonselected channels can be improperly vertically scaled, the message “Clipping” may appear. To tell if it is clipped, examine a channel after switching the group containing it to Analog display mode. If it is clipped, increase the volts/division setting. 3–14 TLS 216 User Manual...
Page 97 Trigger Level Midpoint of data for the trigger source Trigger Slope Positive Trigger Holdoff Vertical Scale Determined based on the peak-peak amplitude of the currently selected channel in the currently selected group Vertical Bandwidth Full 3–15 TLS 216 User Manual...
Page 98 Zoom To Find More Information See Adjusting the Vertical Scale on page 3–7. See Choosing a Group Display Mode on page 3–23. See Selecting Groups and Channels on page 3–117. 3–16 TLS 216 User Manual...
Page 99: Choosing An Acquisition Mode
Choosing an Acquisition Mode The TLS 216 Logic Scope provides three modes for acquiring signals, digitizing them, and displaying them as waveforms on screen. To choose from these modes, you need to understand how each mode acquires and processes the signals you input to the logic scope.
Page 100 Calculates average value for Uses Sample Mode for Each Acquisition each record point over many acquisitions Use to reduce apparent noise in a repetitive signal. Figure 3-5: How the Acquisition Modes Work 3–18 TLS 216 User Manual...
Page 101 ACQUIRE MENU Mode (main) Sample, Envelope, or Average (side). When you select Envelope or Average, you can enter the number of waveform records to be enveloped or averaged using the keypad or the general purpose knob. 3–19 TLS 216 User Manual...
Page 102 In Envelope or Average mode, the logic scope will make the specified number of acquisitions to complete the averaging or enveloping task when taking a single sequence acquisition. 3–20 TLS 216 User Manual...
Page 103 Acquire and Stop After menus, press SHIFT, and then FORCE TRIG. Now the RUN/STOP button operates as just described. (You still must display the Acquire menu and then the Stop After menu to leave single acquisition sequence operation.) To Find More Information See Acquisition, on page 2–19. 3–21 TLS 216 User Manual...
Page 104 Choosing an Acquisition Mode 3–22 TLS 216 User Manual...
Page 105: Choosing A Group Display Mode
Choosing a Group Display Mode The TLS 216 Logic Scope displays the waveform groups you define in your choice of three display modes: Analog, BusForm, and Timing Diagram. To understand which mode to use for your application, you must first consider how each mode affects the waveform data that a group displays on screen.
Page 106 BusForm and Timing Diagram show the waveforms as if they had the same amplitudes. This difference occurs because the logic scope displays BusForm and Timing Diagram waveforms as HIGH or LOW logic levels based on their relationship to thresholds. 3–24 TLS 216 User Manual...
Page 107 See To Check Group Settings on page 3–56 for a complete description of the Vertical Readout. To determine the overall status of all groups, press SHIFT STATUS Waveform (main) Groups (side). (See Figure 3-9.) Figure 3-9: Snapshot of Group Status 3–25 TLS 216 User Manual...
Page 108 2. Press GROUP MENU Display (main) Analog, Bus, Timing Diagram, or OFF (side). (See Figure 3-10.) To read about the group display modes see To Understand Group Display Modes on page 3–23. Figure 3-10: Group Display Mode Menu 3–26 TLS 216 User Manual...
Page 109 Note that the logic scope replaces the volt/division setting with the word Select when you toggle to that setting. NOTE. You can change the selected channel using the Group Definition menu. (See Selecting Groups and Channels on page 3–117.) 3–27 TLS 216 User Manual...
Page 110 Analog. So, if your vertical readout for a group is GRP1[1:1] 500 mV and you select TTL, the readout changes to GRP1[1:1] 1.00 V and the display offsets 1.4 volts relative to the group reference indicator. 3–28 TLS 216 User Manual...
Page 111 Display Mode menu, it still remains the selected group. To Find More Information See Adjusting the Vertical Setup, on page 3–7. See Grouping Waveforms, on page 3–55. See Saving and Recalling Waveforms, on page 3–109. See Selecting Groups and Channels, on page 3–117. 3–29 TLS 216 User Manual...
Page 112 Choosing a Group Display Mode 3–30 TLS 216 User Manual...
Page 113: Communicating With Remote Instruments
Communicating with Remote Instruments The TLS 216 Logic Scope can connect into a system environment, so you can control it remotely or exchange measurement or waveform data between it and a computer. This article explains how to prepare and setup the logic scope for control and operation over the IEEE Std 488.2-1987 (GPIB) interface.
Page 114 Interconnect Cabling Connecting two GPIB devices requires an IEEE Std 488.1-1987 GPIB cable (available from Tektronix, part number 012-0991-00). The standard GPIB cable connects to a 24-pin GPIB connector located on the rear panel of the logic scope. The connector has a D-type shell and conforms to IEEE Std 488.1-1987.
Page 115 Pressing HARDCOPY with the port configured any other way causes and error, and the logic scope responds with a message saying the selected hardcopy port is currently unavailable. Off Bus disconnects the logic scope from the bus. 3–33 TLS 216 User Manual...
Page 116 Communicating with Remote Instruments GPIB Configuration Menu Figure 3-15: Utility Menu To Find More Information See Saving a Hardcopy, on page 3–87. See the TLS 216 Programmer Manual, Tektronix part number 070-8835-XX. 3–34 TLS 216 User Manual...
Page 117: Customizing The Display
Customizing the Display The TLS 216 Logic Scope can display waveform groups in different ways. This article describes how to use the Display menu to adjust the logic scope display style, intensity level, and graticule. It also describes how to select among several display readout options.
Page 118 In addition to choosing Intensified Samples in the side menu, the logic scope must be interpolating or Zoom must be on with a horizontal expansion of greater that 1X. See Interpolation on page 2–20. See Zooming on Waveforms beginning on page 3–175. 3–36 TLS 216 User Manual...
Page 119 Sometimes, especially when using the hardcopy feature, you may wish to display the current date and time on screen. For more information about displaying and setting date and time, see Date/Time Stamp the Hardcopy on page 3–89. 3–37 TLS 216 User Manual...
Page 120 (The filter type, linear or sin(x)/(x), depends on which is set in the Display menu.) Otherwise, interpolation is not needed. See Sampling and Digitizing on page 2–19 for a discussion of sampling including interpolation. 3–38 TLS 216 User Manual...
Page 121 Grid displays a frame and a grid. Cross Hair displays cross hairs and a frame. Frame displays just a frame. To Find More Information See Acquisition on page 2–19. See Customizing the Display Colors on page 3–41. 3–39 TLS 216 User Manual...
Page 122 Customizing the Display 3–40 TLS 216 User Manual...
Page 123: Customizing The Display Colors
Customizing the Display Colors The TLS 216 Logic Scope can display waveform groups in different colors. This article describes how to use the Display menu to choose the colors in which the various display objects appear. To Check Display Status...
Page 124 1. Press Persistence Palettes. 2. Select one of the palettes in the Persistence Palettes side menu. To preview the persistence palette you select, press View Palette in the main menu. To quit preview mode, press Persistence Palette. 3–42 TLS 216 User Manual...
Page 125 4. Press Lightness in the side menu and use the general purpose knob or keypad to select the lightness you desire. A value of 0 results in black. A value of 50 provides the nominal color. A value of 100 results in white. 3–43 TLS 216 User Manual...
Page 126 2. To return any group to its factory default color, select the group as in step 2 and press Reset to Factory Color in the side menu. 3–44 TLS 216 User Manual...
Page 127 3. Press (repeatedly) Color in the side menu to cycle to and apply any of the color choices to the reference group just selected. To return any group to its factory default color, select it as in step 2 and press Reset to Factory Color in the side menu. 3–45 TLS 216 User Manual...
Page 128 Figure 3-23: Display Menu — Restore Colors 2. Press any of the following side menu buttons: Reset Current Palette To Factory — restores any colors customized in the palette currently controlling the display to their factory settings. The hue, 3–46 TLS 216 User Manual...
Page 129 The hue, lightness, and saturation of every color in all palettes are reset, whether selected or not. Reset All Mappings To Factory restores all live and reference groups to their default colors. To Find More Information See Customize the Display on page 3–35. 3–47 TLS 216 User Manual...
Page 130 Customizing the Display Colors 3–48 TLS 216 User Manual...
Page 131: Doing A Probe Cal
Doing a Probe Cal The TLS 216 Logic Scope can compensate its entire signal path, from probe tip to digitized signal, to improve the gain and offset accuracy of the P6240 probe. By executing Probe Cal on a channel with its probe installed, you can optimize the capability of the logic scope to make accurate measurements using that channel and probe.
Page 132 13. If desired, repeat this procedure beginning at step 1 to compensate for other probe/channel combinations. But before you do so, be sure you give every probe a 20-minute warm-up period from the time you install it. 3–50 TLS 216 User Manual...
Page 133 Redefining groups does not require a new Probe Cal unless you move any probe to a channel other than which it was compensated with. For instance, you can define Group 1 to include all 16 channels, install all probes on all channels, and 3–51 TLS 216 User Manual...
Page 134 If you execute a successful Probe Cal on an input channel, the logic scope stores the compensation data it derived in non-volatile memory. Therefore, this data is available when you turn the logic scope off and back on, when you change probes, etc. 3–52 TLS 216 User Manual...
Page 135: Doing A Signal Path Compensation
Doing a Signal Path Compensation The TLS 216 Logic Scope allows you to compensate the internal signal path used to acquire the waveforms you measure. This article details the procedure for executing a signal path compensation (SPC) which optimizes the capability of the logic scope to make accurate measurements based on the ambient tempera- ture.
Page 136 Doing a Signal Path Compensation Figure 3-25: Performing a Signal Path Compensation 3–54 TLS 216 User Manual...
Page 137: Grouping Waveforms
Grouping Waveforms The TLS 216 Logic Scope operates on channels and the waveforms they acquire only as individual groups. To perform even basic operations on any waveform, such as displaying, vertically positioning, and vertically scaling it, you must first know how to include it in a group. This article describes the group concept and how to define, display, and remove groups.
Page 138 (See Figure 3-27.) displays OFF in the group readout for any group that is turned off in its Display Mode menu. 3–56 TLS 216 User Manual...
Page 139 Figure 3-27: Vertical Readout Displaying Two Group Readouts The group reference indicator for the selected group appears along the left side of the display. See Figure 3-28. To check the overall group setup, press SHIFT STATUS Waveform (main) Groups (side). 3–57 TLS 216 User Manual...
Page 140 3. Press Last Channel (side). Use the key pad to select the last channel in the group. 4. Press Selected Channel (side). Use the key pad to designate the selected channel in the group. Group Reference Indicator Figure 3-28: The Group Definition Menu 3–58 TLS 216 User Manual...
Page 141 NOTE. Channels selected as trigger sources in the trigger menus continue to be the trigger source regardless of whether it belongs to a group that is displayed, or turned off, or deleted (belongs to no group at all). 3–59 TLS 216 User Manual...
Page 142 See Adjusting the Vertical Scale on page 3–7. See Choosing a Group Display Mode on page 3–23. See Selecting Groups and Channels on page 3–117. See Example 1: Displaying Waveforms on page 1–11. See Example 2: Grouping Waveforms on page 1–17. 3–60 TLS 216 User Manual...
Page 143: Managing The File System
Managing the File System The TLS 216 Logic Scope provides file utilities and a floppy disk drive for saving, recalling, and otherwise managing the hardcopies, setups, and waveforms you save to a 720 Kbyte or 1.44 Mbyte floppy disk. This article describes how to manage these files using the File Utilities menu, which appears in the Hardcopy, Save Setup, and Save Waveforms menus.
Page 144 WAVEFORM button to bring up the Save/Recall Waveform menu, or the SHIFT HARDCOPY MENU button to bring up the Hardcopy menu. 2. Press File Utilities (main) to bring up the File Utilities side menu. (See Figure 3-29.) 3–62 TLS 216 User Manual...
Page 145 , Back Space, or Delete keys in the main menu to edit the name before pressing OK Accept (side). To discard the name you created and start over, press the Clear key in the main menu before pressing OK Accept (side). 3–63 TLS 216 User Manual...
Page 146 2. Press Print (side). The Print To side menu will appear. 3. Select the port to print to from these choices: GPIB, RS-232, or Centronics (side). The logic scope will immediately begin sending the file in its raw 3–64 TLS 216 User Manual...
Page 147 To make the parent directory the working directory, turn the general purpose knob to scroll the cursor over the special-purpose directory name “..” listed in all subdirectories. Press SELECT to change to the directory containing the subdirectory. 3–65 TLS 216 User Manual...
Page 148 Managing the File System To Find More Information See Printing a Hardcopy, on page 3–87. See Saving and Recalling Setups, on page 3–105. See Saving and Recalling Waveforms, on page 3–109. 3–66 TLS 216 User Manual...
Page 149 Measuring Waveforms Automatically The TLS 216 Logic Scope provides Measure, a feature for automatically measuring the waveforms contained in the groups it acquires. If your measure- ment is one of the 28 measurements available, the logic scope can take the measurement and display it on screen.
Page 150 Timing measurement. Time taken for the falling edge of the first pulse in the waveform or gated region to fall from a High Ref value (default = 90%) to a Low Ref value (default =10%) of its final value. 3–68 TLS 216 User Manual...
Page 151 Timing measurement of the first cycle in the waveform or gated region. The ratio of the positive pulse width to the signal period expressed as a percentage. PositiveWidth PositiveDutyCycle 100% Period Positive Overshoot Voltage measurement over the entire waveform or gated region. High PositiveOvershoot 100% Amplitude 3–69 TLS 216 User Manual...
Page 152 Select Measrmnt (main). (See Figure 3-32.) 3. Select a measurement from the side menu. When taking measurements, consider the following hints. To determine the channel on which the logic scope takes the measurement, check the measurement readout. 3–70 TLS 216 User Manual...
Page 153 To remove a measurement, use the Remove Measurement menu. 1. Press MEASURE Remove Measrmnt (main). 2. Select one or more of Measurement 1 – Measurement 4 from the side menu. If you want to remove all the measurements at one time, press All 3–71 TLS 216 User Manual...
Page 154 Figure 3-33: Measure Menu — Gating 2. Using the general purpose knob, move the selected (the active) cursor. Press SELECT to change which cursor is active. Adjust the cursors until they just span the measurement area. 3–72 TLS 216 User Manual...
Page 155 It is useful for general purpose applications and is the default selection. Units sets the levels as in the units of measurement (typically volts). Use this selection when setting a reference level to precise values. For example, if 3–73 TLS 216 User Manual...
Page 156 Delay, Phase, Hold, and Setup Measurements. The default is 50%. Figure 3-34: Measure Menu — Reference Levels The logic scope uses the reference levels you set for all measurements derived based on those levels. 3–74 TLS 216 User Manual...
Page 157 Note that since reference waveforms acquired in the same channel can be saved to different reference (Channel 1 can appear in all four reference groups), any one of 16 channels can be specified for each reference group. A 3–75 TLS 216 User Manual...
Page 158 To do these tasks, perform the following steps: 1. Use the group selection buttons to select any live or reference group. 2. Press MEASURE Select Measrmnt (main) Setup (side). (Press –More– (side) as needed to display the setup items.) (See Figure 3-36.) 3–76 TLS 216 User Manual...
Page 159 To measure hold, use the process just outlined for Measure Setup. Select Hold (side) instead of Setup (side) when you do step 2. Measure Skew To measure skew, simply select it, press MEASURE Select Measrmnt (main) Skew (side). 3–77 TLS 216 User Manual...
Page 160 To change the High-Low Setup (page 3–73), Reference Levels (page 3–73), or to make Gated Measurements (page 3–72) with snapshot, perform the procedures exactly as you would when you display individual measurements from the Select Measrmnt menu. 3–78 TLS 216 User Manual...
Page 161 Snapshot) or any front-panel button that displays a new menu. To Find More Information See Appendix B: Algorithms. See Example 3: Automated Measurements, on page 1–23. See Measurements, on page 2–27. See Measuring Waveforms with Cursors, on page 3–81. 3–79 TLS 216 User Manual...
Page 162 Measuring Waveforms Automatically 3–80 TLS 216 User Manual...
Page 163 Measuring Waveforms with Cursors The TLS 216 Logic Scope provides cursors to measure the difference (either in time or voltage) between any two points on one or more waveforms in a group. The logic scope can also display the binary value at a single point along the group record.
Page 164 H Bars, V Bars, or Paired, read the following descrip- tions. H Bars The value after shows the voltage difference between the cursors. The value after @ shows the voltage of the selected cursor relative to ground. 3–82 TLS 216 User Manual...
Page 165 1 (logic HIGH) for waveform levels > V High (min) displays a 0 (logic LOW) for waveform levels < V Low (max). displays a ? (for undefined) for waveforms levels such that < waveform level < V High (min) Low (max). 3–83 TLS 216 User Manual...
Page 166 Figure 3-41: Cursor Menu and Readouts — Paired Cursors Selected Paired cursors can only show voltage differences when they remain on screen. If “ the paired cursors are moved off screen horizontally, the word Edge” will replace the voltage values in the cursor readout. 3–84 TLS 216 User Manual...
Page 167 Selecting Time Units To choose to display vertical bar cursor results in units of time or frequency: press CURSOR Time Units (main) seconds or 1/seconds (Hz) (side). To Find More Information See Measurements, on page 2–27. 3–85 TLS 216 User Manual...
Page 168 Measuring Waveforms with Cursors 3–86 TLS 216 User Manual...
Page 169 Printing a Hardcopy The TLS 216 Logic Scope can provide you with hardcopies of its display. To obtain a hardcopy, you need to know how to configure the communication and hardcopy parameters of the logic scope, how to connect it to one of the many hardcopy devices it supports, and how to print the hardcopy.
Page 170 EPS Mono and Color formats are compatible with Tektronix Phaser Color Printers, HPGL is compatible with the Tektronix HC100 Plotter, and Epson is compatible with the Tektronix HC200 Printer. To Set Up for Making Hardcopies Before you make a hardcopy, you need to set up communications and hardcopy parameters.
Page 171 Display Date and Time (side) to toggle the setting to 2. If you want to set the date and time, skip steps 3 and 4 and continue with step 1 of Set the Date and Time below. Then redo this procedure. 3–89 TLS 216 User Manual...
Page 172 For example, use 23.6 for the 23 of June.) 3. Repeat steps 1 and 2 to set other parameters as desired. 4. Press OK Enter Date/Time (side) to put the new settings into effect. This sets the seconds to zero. 3–90 TLS 216 User Manual...
Page 173 Hardcopy Device interface and cable the device uses, and connect accordingly. (See Figure 3-45.) Some devices, such as the Tektronix HC100 Plotter, use the GPIB interface. Many printers, such as the Tektronix HC200, use Centronics interfaces. Many hardcopy devices, including the HC100 and HC200 with option 03, provide RS-232 support.
Page 174 The file list and its scrollbar will appear. 4. Turn the general purpose knob to place the scroll bar over the file in which to store the hardcopy. 3–92 TLS 216 User Manual...
Page 175 (See Figure 3-46.) Use the GPIB port to remotely request and receive a hardcopy from the logic scope Use the RS-232 or the Centronics port on the controller to print output. GPIB Cable Centronics or RS-232 Cable PC Compatible Logic Scope Hardcopy Device Figure 3-46: 3–93 TLS 216 User Manual...
Page 176 Printing a Hardcopy Print If your controller is PC-compatible and it uses the Tektronix GURU S3FG210 (National Instruments GPIB-PCII/IIA) GPIB package, do the following steps to print a hardcopy: 1. Use the MS-DOS cd command to move to the directory that holds the software that came with your GPIB board.
Page 177 Printing a Hardcopy NOTE. If you transmit hardcopy files across a computer network, use a binary (8-bit) data path. To Find More Information See Communicating with Remote Instruments, on page 3–31. 3–95 TLS 216 User Manual...
Page 178 Printing a Hardcopy 3–96 TLS 216 User Manual...
Page 179 Probing of Circuits This article describes the P6240 FET probe that is shipped with the TLS 216 Logic Scope as a standard accessory. The P6240 probe, when matched with other accessories shipped with the logic scope, can be connected in a variety of configurations to couple signals to the logic scope.
Page 180 To consider some of the effects that certain accessories can introduce when taking higher frequency measurements, see Consider Frequency Effects on page 3–102. To reorder any of these and other accessories, refer to Appendix A in this manual. 3–98 TLS 216 User Manual...
Page 181 (See Table 3–4.) FlexLead Adapter (Optional) 16-Pin SOIC Adapter (Optional) 24-Pin DIP Adapter (Optional) 68-Pin PLCC Adapter (Optional) SMT KlipChip Y-LeadSet Hand-Held Adapter Ground Lead Eight-Cable Loom One-to-Two Adapter Figure 3-48: Installing Accessories — Standard and Optional 3–99 TLS 216 User Manual...
Page 182 A ground lead also plugs into the back of this adapter. Hand-Held Adapter Ground Lead — provides a ground for the hand-held adapter. Align the ground input of the probe with the ground lead connector. Ground Lead 3–100 TLS 216 User Manual...
Page 183 (such as the pin connected to ground), add a SMTKlipChip to the ground lead of the Y-LeadSet before connecting to the DIP adapter pin. See Appendix A in this manual for information on ordering this optional 24-Pin DIP Adapter accessory. 3–101 TLS 216 User Manual...
Page 184 30 MHz: Y-LeadSet SMT KlipChip Hand-Held Adapter with optional ground lead To consider what circuit elements a probe, when connected into a circuit, introduces, see Figure 3-49. 3–102 TLS 216 User Manual...
Page 185 To minimize inductance, take your measurements directly with the probe tip on adjacent pins when possible. 3–103 TLS 216 User Manual...
Page 186 Probing of Circuits 3–104 TLS 216 User Manual...
Page 187 Saving and Recalling Setups The TLS 216 Logic Scope can save and recall setups you might want to reuse later. For example, you might start with an initial setup to begin an experiment and, after making control changes as the experiment progresses, wish to return to it later.
Page 188 You will not be able to overwrite the file if Overwrite Lock is turned on (error message will display). To turn overwrite lock off do the following steps: 1. Press CLEAR MENU if the overwrite lock message displayed. Press File Utilities in the Save/Recall Setup menu. 3–106 TLS 216 User Manual...
Page 189 To Recall the Factory Setup To reset your logic scope to the factory defaults, press SETUP Recall Factory Setup (main) OK Confirm Factory Init (side). See Appendix D, Factory Initialization Settings, for a list of the factory defaults. 3–107 TLS 216 User Manual...
Page 190 To Find More Information See Appendix D, Factory Initialization Settings. See Example 4: Saving Setups, on page 1–29. See Managing the File System, on page 3–61. 3–108 TLS 216 User Manual...
Page 191 Saving and Recalling Waveforms The TLS 216 Logic Scope can save and recall waveform groups into any of the four internal reference memories of the logic scope. (The logic scope retains the stored reference groups even if powered off or unplugged.) It can also save groups to and recall them from a 720 KByte or 1.44 MByte floppy disk inserted...
Page 192 You can store groups in reference locations labeled empty without disturbing previously stored waveforms. 2. Press Save/Recall WAVEFORM Save Group (main) To Ref1, To Ref2, To Ref3, or To Ref4 (side). 3–110 TLS 216 User Manual...
Page 193 2. Press Save/Recall WAVEFORM Save Group (main) To File (side). 3. Turn the general purpose knob to place the scroll bar over the file in which to store the group. (See Figure 3-53). 3–111 TLS 216 User Manual...
Page 194 You will not be able to overwrite the file if Overwrite Lock is turned on (error message will display). To turn overwrite lock off do the following steps: 1. Press CLEAR MENU if the overwrite lock message displayed. Press File Utilities in the Save/Recall Waveform menu. 3–112 TLS 216 User Manual...
Page 195 You can display any reference that is not empty. Names of empty references appear dimmed in the Select Ref menu. In Figure 3-54, the memory locations Ref2, Ref3, and Ref4 are empty. Ref1 is not empty. 3–113 TLS 216 User Manual...
Page 196 To Delete Reference Groups To delete reference groups you no longer need, press Save/Recall WAVEFORM Delete Refs (main), and then press any of Delete Ref1, Delete Ref2, Delete Ref3, Delete Ref4, or Delete All Refs (side) to delete. 3–114 TLS 216 User Manual...
Page 197 To delete waveform groups from the floppy disk, rename disk files, format disks, create directories, and otherwise manage the disk file system, see Managing the File System on page 3–61. To Find More Information See Managing the File System on page 3–61. 3–115 TLS 216 User Manual...
Page 198 Saving and Recalling Waveforms 3–116 TLS 216 User Manual...
Page 199 Selecting Groups and Channels The TLS 216 Logic Scope applies the control changes you make, such as vertical bandwidth, offset, position, and scale, to the selected group. To make these changes to a group, or to define a group (choose the channels the group contains, its display mode, and so on), you must first select it.
Page 200 The logic scope lights the LED above the button you press. The LED lights regardless of whether you select a shifted group (1–4) or one that is not shifted (5–8). (See steps 1 and 2, above.) Therefore, if you are not sure 3–118 TLS 216 User Manual...
Page 201 2. Press the GROUP OFF button to remove the currently selected group. To display a group that is turned off, turn it on in the group mode menu: Press GROUP MENU Group Definition (main) Analog, Bus, or Timing Diagram (side). 3–119 TLS 216 User Manual...
Page 202 To Find More Information See Adjusting the Vertical Setup, on page 3–7. See Choosing a Group Display Mode, on page 3–23. See Grouping Waveforms, on page 3–55. See Saving and Recalling Waveforms, on page 3–109. 3–120 TLS 216 User Manual...
Page 203 Triggering After Delay The TLS 216 Logic Scope provides a main time base and a delayed time base. Both main and delay time bases have full-featured trigger systems that provide edge, pulse, pattern, state, and sequence triggers. This article describes how to set the logic scope to acquire after a delay expires.
Page 204 1 volt using the main trigger system controls and menus also sets the Ch1 threshold to 1 volt for the delayed trigger system. To trigger the main and delayed trigger systems at different thresholds, you must select a different source for each system. 3–122 TLS 216 User Manual...
Page 205 Delayed Trigger Waveform Record Main Trigger Point Main Trigger Source Delayed Trigger Source Waiting for nth Event Time Delay Start Posttrigger Acquisition (Where n=4) (From Delay Trig Menu) Figure 3-58: How the Delayed Triggers Work 3–123 TLS 216 User Manual...
Page 206 The end of the zone corresponds to the end of the delayed record. Therefore, for Delays Runs After Main mode only, this zone shows where the delayed time base record occurs relative to the main trigger. 3–124 TLS 216 User Manual...
Page 207 3. Press SHIFT DELAYED TRIG Delay by (main) Triggerable After Time, Events, or Events/Time (side). (See Figure 3-59.) Figure 3-59: Delayed Trigger Menu 3–125 TLS 216 User Manual...
Page 208 See Triggering on Patterns, on page 3–131. See Triggering on Pulses, on page 3–141. See Triggering on a Sequence, on page 3–147. See Triggering on Signals, on page 3–159. See Triggering on States, on page 3–165. 3–126 TLS 216 User Manual...
Page 209 Triggering on Edges The TLS 216 Logic Scope can trigger on the rising or falling edge of a wave- form. The logic scope monitors the amplitude level of the trigger source you specify, and when the level passes through the threshold level you set, it triggers.
Page 210 To select the slope that the edge trigger will occur on, do the following steps. 1. Press the TRIGGER MENU Type (main) Edge (pop-up) Slope (main) to select the slope that the edge trigger will have. 2. Select the rising or falling edge from the side menu. 3–128 TLS 216 User Manual...
Page 211 Set Mode & Holdoff To change the holdoff time and select the trigger mode (main trigger system only), do the following steps. 1. Press TRIGGER MENU Mode & Holdoff (main) Auto or Normal (side). 3–129 TLS 216 User Manual...
Page 212 (that is, when the time base setting in the Horizontal menu is Intensified or Delayed Only). To Find More Information See Triggering, on page 2–13. See Triggering on Signals, on page 3–159. 3–130 TLS 216 User Manual...
Page 213 Triggering on Patterns The TLS 216 Logic Scope can trigger on logic or binary patterns. It compares the trigger source inputs with the logic pattern you define and triggers when the comparison meets conditions that you specify. This article describes how to define and time-qualify a pattern trigger. Setting up for pattern triggering using the delayed trigger system is identical except where noted.
Page 214 The trigger event does not occur when the inputs first meet Boolean requirements (input pattern compares TRUE). Rather, the logic scope starts a timer it uses to determine if the pattern satisfies the time qualification set. 3–132 TLS 216 User Manual...
Page 215 (See Figure 3-63 on page 3–135.) To determine the overall setup for the pattern trigger, press SHIFT STATUS Trigger (main). Choose from Thresholds, Main, and Delay in the side menu. (See Figure 3-62.) 3–133 TLS 216 User Manual...
Page 216 Time Qualify the Pattern Trigger by specifying the time or range of time that the inputs must meet the Boolean requirement. Select Pattern Triggering To begin specifying your pattern trigger, press TRIGGER MENU Type (main) Pattern (pop-up). (See Figure 3-63.) 3–134 TLS 216 User Manual...
Page 217 Ch Index button. NOTE. The logic scope will not trigger if all pattern inputs are set to Don’t Care. The logic scope only recognizes patterns that have at least one input set to HIGH or LOW. 3–135 TLS 216 User Manual...
Page 218 To trigger when a pattern becomes TRUE and then stays TRUE for a period that falls inside or outside a time range (window) that you specify, perform To Trigger on a Time-Range Qualified Pattern on page 3–139. 3–136 TLS 216 User Manual...
Page 219 NOTE. The minimum time qualification of 2 ns is a value the logic scope can typically achieve. For warranted values, consult the TLS 216 Performance Verification and Specifications manual shipped with the logic scope. Triggering will occur when the inputs compare TRUE and the minimum time limit expires.
Page 220 200 s. Time the Pattern is TRUE AND of Pattern Becomes TRUE (HHH) Pattern Satisfies Time Qualification AND of Pattern Becomes FALSE (HLL) and Triggers Acquisition Time Limit Figure 3-65: Time-Qualified Pattern Triggering: > Time 3–138 TLS 216 User Manual...
Page 221 7. Press In Range or Out of Range (side). See Table 3–7 on page 3–132 to select the time qualifier that is appropriate to your application. To Find More Information See Triggering, on page 2–13. See Triggering on Signals, on page 3–159. 3–139 TLS 216 User Manual...
Page 222 Triggering on Patterns 3–140 TLS 216 User Manual...
Page 223 Triggering on Pulses The TLS 216 Logic Scope can trigger on glitches or pulses based on their width. It compares the trigger source input with the glitch or pulse width limit (or range) you specify and triggers when the comparison meets your specification.
Page 224 (See Figure 3-66.) Trigger Class = Glitch Trigger Type = Pulse Figure 3-66: Pulse Trigger Readouts To determine the overall setup for the pulse trigger, press SHIFT STATUS Trigger (main) Thresholds, Main, or Delay (side). 3–142 TLS 216 User Manual...
Page 225 1 through 16. Set Mode & Holdoff To change the holdoff time and select the trigger mode, do the following steps. 1. Press TRIGGER MENU Mode & Holdoff (main) Auto or Normal (side). 3–143 TLS 216 User Manual...
Page 226 To select glitch triggering and polarity, do the following steps. and Glitch Polarity 1. Press TRIGGER MENU Type (main) Pulse (pop-up) Class (main) Glitch (side). 2. Press Polarity (main) Positive or Negative (side). Glitch Positive looks at positive-going pulses. 3–144 TLS 216 User Manual...
Page 227 Pulse Polarity 1. Press TRIGGER MENU Type (main) Pulse (pop-up) Class (main) Width (side). 2. Press Polarity (main) Positive or Negative (side). Pulse Width Positive looks at positive-going pulses. Pulse Width Negative looks at negative-going pulses. 3–145 TLS 216 User Manual...
Page 228 4, above. Any pulse within the range specified triggers logic scope it at the trailing edge of the pulse. To Find More Information See Triggering, on page 2–13. See Triggering on Signals, on page 3–159. 3–146 TLS 216 User Manual...
Page 229 Triggering on a Sequence The TLS 216 Logic Scope can trigger on a sequence of two logic or binary patterns. It compares the trigger source inputs with the first logic pattern you define and recognizes that pattern when the comparison meets certain conditions that you specify.
Page 230 Inputs are TRUE when they meet the Boolean requirement for the logic function selected; otherwise they are FALSE. See Table 3–9. The logic scope starts timing the period at the point when the inputs become TRUE (see footnote 1). 3–148 TLS 216 User Manual...
Page 231 To Trigger on a Time-Range Qualified sequence, which begins on page 3–157, lists the general procedure for using both types of the time-range qualifiers, In Range and Out of Range. 3–149 TLS 216 User Manual...
Page 232 AND, NAND, OR, or NOR. (See Table 3–9 on page 3–148 for the Boolean requirement associated with each comparison logic function.) Time Qualify the Sequence Trigger by specifying the time or range of time that the inputs must meet the Boolean requirement. 3–150 TLS 216 User Manual...
Page 233 4. Repeat step 3 to set all inputs to the levels you require. You can skip over channels already properly defined (or return to a channel to redefine it) using the general purpose knob, keypad, or Ch Index button. 3–151 TLS 216 User Manual...
Page 234 NAND, OR, or NOR (side). The end pattern logic you select does not have to match that selected for the start pattern. See Table 3–9 on page 3–148 to select the logic function appropriate for your application. 3–152 TLS 216 User Manual...
Page 235 To trigger when a TRUE end pattern follows a TRUE start pattern within a time that falls inside or outside a time range (window) that you specify, perform To Trigger on a Time-Range Qualified Sequence on page 3–157. 3–153 TLS 216 User Manual...
Page 236 NOTE. The minimum time qualification of 2 ns is a value the logic scope can typically achieve. For warranted values, consult the TLS 216 Performance Verification and Specifications manual shipped with the logic scope.
Page 237 Figure 3-71 shows an example of Time Out qualification. In this case, the Boolean requirements for the three-input start and end patterns are defined by the AND logic chosen. The inputs shown (Ch 1 – Ch 3) must match their defined 3–155 TLS 216 User Manual...
Page 238 The logic scope waits for a TRUE end pattern while the timer runs. The timer runs out (the 400 s set in the side menu elapses), so the logic scope triggers at the point the timer elapses. 3–156 TLS 216 User Manual...
Page 239 Triggering occurs at the point the end pattern becomes TRUE at a time that meets the In Range or Out of Range time constraint. See the discussion immediately preceding this procedure for more information. 3–157 TLS 216 User Manual...
Page 240 Triggering on a Sequence To Find More Information See Triggering, on page 2–13. See Triggering on Signals, on page 3–159. 3–158 TLS 216 User Manual...
Page 241 Triggering on Signals Triggers determine when the logic scope starts acquiring and displaying a waveform group. The TLS 216 has five types of trigger: edge, pulse, pattern, state, and sequence. This article discusses some of the trigger controls and features that are common to several or all of these trigger types.
Page 242 When READY lights, it means the logic scope can accept a valid trigger event and it is waiting for that event to occur. When ARM lights, it means the trigger circuitry is filling the pretrigger portion of the waveform record. 3–160 TLS 216 User Manual...
Page 243 (T) on the waveform. (See Figure 3-73.) The trigger position indicator appears for all five trigger types if it is turned on in the Display menu. It can be horizontally positioned off screen with long record lengths. 3–161 TLS 216 User Manual...
Page 244 Pattern, State or Sequence (pop-up) Set Thresholds (main) Ch Index (side). 2. Use the general purpose knob or the key pad to select the channel. (The selection 17 selects the Auxiliary input at the rear panel.) 3–162 TLS 216 User Manual...
Page 245 Set to TTL fixes the trigger level at +1.4 V. Set to +ECL fixes the trigger level at +3.7 V. Set to –ECL fixes the trigger level at –1.3 V. Set to CMOS fixes the trigger level at +2.5 V. 3–163 TLS 216 User Manual...
Page 246 See Triggering After Delay, on page 3–121. See Triggering on Edges, on page 3–127. See Triggering on Patterns, on page 3–131. See Triggering on Pulses, on page 3–141. See Triggering on a Sequence, on page 3–141. See Triggering, on page 2–13. 3–164 TLS 216 User Manual...
Page 247 Triggering on States The TLS 216 Logic Scope can trigger on the state of a logic or binary pattern at the time it is clocked. The logic scope compares the trigger inputs against the digital pattern you define and triggers when the comparison meets the conditions you specify at the time its clock input changes state.
Page 248 State (side) to pop up a display of the currently defined pattern. (See Figure 3-75 on page 3–167.) To determine overall setup for the pattern trigger, press SHIFT STATUS Trigger (main). (See Figure 3-74.) Current Trigger Type = State State Trigger Setup Figure 3-74: Snapshot of Trigger Status 3–166 TLS 216 User Manual...
Page 249 Define the Clock by specifying its source, the direction its clocking edge must transition, and its threshold. Select State Trigger To begin specifying your pattern trigger, select the state trigger menu (Figure 3-75), press TRIGGER MENU Type (main) State (pop-up). Figure 3-75: State Trigger Menu 3–167 TLS 216 User Manual...
Page 250 To define the source, polarity (edge), and threshold of the signal used to clock the state trigger, do the following steps. 1. Press TRIGGER MENU Type (main) State (pop-up) Clock Source (main) Channel or Auxiliary (side). When selecting a channel as 3–168 TLS 216 User Manual...
Page 251 In Normal mode the logic scope acquires a waveform only if there is a valid trigger. 2. Press Holdoff (side). Enter the value in percent using the general purpose knob or the keypad. To Find More Information See Triggering, on page 2–13. See Triggering on Signals, on page 3–159. 3–169 TLS 216 User Manual...
Page 252 Triggering on States 3–170 TLS 216 User Manual...
Page 253 Viewing Help The TLS 216 Logic Scope includes an on-line help system to provide brief information about each of the logic scope controls. This article describes how to display help on screen. To Access On Line Help To enter help mode, press HELP. (See Figure 3-76.)
Page 254 2. Press the menu button that referred to the undisplayed menu. The logic scope will display the referenced menu items. 3. Press HELP to reenter help mode. Press any of the menu items (which now appear in the menu) to display help on that item. 3–172 TLS 216 User Manual...
Page 255 Viewing Status The TLS 216 Logic Scope provides a status menu for displaying information about the logic scope state. To Display Status To operate the Status menu, press SHIFT STATUS System, Waveform, Trigger, or Banner (main). System displays information about the Display, I/O, Horizontal, Zoom, Acquisi- tion, Measure, and Hardcopy systems (Figure 3-77).
Page 256 Viewing Status 3–174 TLS 216 User Manual...
Page 257 Zooming on Waveforms The TLS 216 Logic Scope can expand or compress (zoom in or out) on a waveform group without changing the acquisition parameters (sample rate, record length, and so on). This article describes how to use zoom and how it interacts with the selected waveform group.
Page 258 If a reference group is selected and Horizontal Lock set to Live, only the selected reference group is magnified and positioned. All — all groups displayed (live and reference) can be magnified and positioned horizontally at the same time. 3–176 TLS 216 User Manual...
Page 259 To Set the Interpolation Method To change the interpolation method used, press DISPLAY Filter (main) Sin(x)/x Interpolation or Linear Interpolation (side). The interpolation method set is used for all acquisition displays, whether zoomed or not. 3–177 TLS 216 User Manual...
Page 260 Zoom Horizontal Position Tracking Horizontal Position Zoom Horizontal Gain To return to normal (non-zoom operation, press ZOOM Off (side). To Find More Information See Acquisition, on page 2–19. See Choosing a Group Display Mode, on page 3–35. 3–178 TLS 216 User Manual...
Page 261 Appendices...
Page 262 50 SMA connection to the instrument. Option 1S: Substitute With this option, Tektronix ships a set of 16 coaxial adapters in place of the Coaxial Adapter Set 16 standard probes. These adapters provide a 50 SMA connection to the instrument.
Page 263 Options (The standard warranty appears following the title page in this manual.) Option M2. When Option M2 is ordered, Tektronix adds two years of repair service to the standard warranty. Option M3. When Option M3 is ordered, Tektronix adds four logic scope calibrations (one per year in the second through fifth years of service) to the Option M2 service.
Page 264 Soft-Sided Carrying Case 016-0909-01 Transit Case 016-1135-00 GPIB Cable (1 meter) 012-0991-01 GPIB Cable (2 meter) 012-0991-00 Logic Scope to Coax Adapter 013-0282-00 FlexLead Adapter (Used with probe) PJ25x25 16-Pin SOIC Adapter (Used with probe) 013-0242-00 A–3 TLS 216 User Manual...
Page 265 24-Pin DIP Adapter (Used with probe) 003-0823-00 68-Pin PLCC Adapter (Used with probe) 013-0250-00 Accessory Software The following optional accessories are Tektronix software products recom- mended for use with your logic scope: Table A–4: Accessory Software Software Part Number EZ-Test Program Generator...
Page 266 Appendix B: Algorithms The TLS 216 Logic Scope can take 28 automatic measurements. By knowing how the instrument makes these calculations, you may better understand how to use your instrument and how to interpret your results. Measurement Variables The logic scope uses a variety of variables in its calculations. These include:...
Page 267 End is the location of the end of the measurement zone (X-value). It is ( – 1.0) samples unless you are making a gated measurement. When you use gated measurements, it is the location of the right vertical cursor. B–2 TLS 216 User Manual...
Page 268 StartCycle is the starting time for cycle measurements. It is a floating-point number with values between 0.0 and ( – 1.0), inclusive. EndCycle is the ending time for cycle measurements. It is a floating-point number with values between 0.0 and ( – 1.0), inclusive. B–3 TLS 216 User Manual...
Page 269 The arithmetic area for one waveform. Remember that one waveform is not necessarily equal to one cycle. For cyclical data you may prefer to use the cycle area rather than the arithmetic area. then return the (interpolated) value at Otherwise, B–4 TLS 216 User Manual...
Page 270 Mean measurement. then return the (interpolated) value at For details of the integration algorithm, see page B–12. Cycle RMS The true Root Mean Square voltage over one cycle. then Otherwise, B–5 TLS 216 User Manual...
Page 271 . (Use linear interpolation if necessary.) 3. From , continue the search, looking for a crossing of . Update if subsequent crossings are found. When a crossing is found, it becomes . (Use linear interpolation if necessary.) – B–6 TLS 216 User Manual...
Page 272 Measure menu. Setup is determined in the following manner (see Figure B–3): 1. The logic scope finds the first crossing and the first crossing for each waveform in the selected group. B–7 TLS 216 User Manual...
Page 273 0% (lowest) voltage reference value calculated. (See “High, Low” earlier in this section) Using the min-max measurement technique: Maximum Amplitude (voltage) measurement. The maximum voltage. Typically the most positive peak voltage. Examine all samples from inclusive and set equal to the greatest magnitude value found. B–8 TLS 216 User Manual...
Page 274 Note that this value should never be negative (unless High or Low are set out-of-range). Negative Width Timing measurement. The distance (time) between (default = 50%) amplitude points of a negative pulse. = ‘–’ then – B–9 TLS 216 User Manual...
Page 275 Phase is not available in the Snapshot display. Positive Duty Cycle Timing measurement. The ratio of the positive pulse width to the signal period, expressed as a percentage. is defined in Positive Width, following. B–10 TLS 216 User Manual...
Page 276 , continue the search, looking for a crossing of . Update if subsequent crossings are found. If a crossing is found, it becomes the high rise time or . (Use linear interpolation if necessary.) – B–11 TLS 216 User Manual...
Page 277 The integration algorithm used by the logic scope is as follows: is approximated by where: W(t) is the sampled waveform is the continuous function obtained by linear interpolation of W(t) A and B are numbers between 0.0 and –1.0 B–12 TLS 216 User Manual...
Page 278 1 occurred last for the waveform group. The crossing is called and might be either a or a crossing. 3. The logic scope determines the first crossing for the selected clock edge. This crossing is called B–13 TLS 216 User Manual...
Page 279 4. The logic scope determines which crossing out of all the last crossings found in step 2 occurred last for the waveform group. The crossing is called and might be either a or a crossing. B–14 TLS 216 User Manual...
Page 280 2. If the pair > , use the minima, else use maxima. If all pairs straddle , use maxima. See Figure B–7. The Burst Width measurement always uses both maxima and minima to determine crossings. B–15 TLS 216 User Manual...
Page 281 When samples are out of range, the measurement will give a warning to that effect (for example, “CLIPPING”) if the measurement could change by extending the measurement range slightly. The algorithms assume the samples recover from an overdrive condition instantaneously. B–16 TLS 216 User Manual...
Page 282 NOTE. When measurements are displayed using Snapshot, out of range warnings are NOT available. However, if you question the validity of any measurement in the snapshot display, you can select and display the measurement individually and then check for a warning message. B–17 TLS 216 User Manual...
Page 283 Appendix B: Algorithms B–18 TLS 216 User Manual...
Page 284 170 kg (375 pound) test strength. 2. If you are shipping the logic scope to a Tektronix field office for repair, attach a tag to the logic scope showing the instrument owner and address, the name of the person to contact about the instrument, the instrument type, and the serial number.
Page 285 Appendix C: Packaging for Shipment C–2 TLS 216 User Manual...
Page 286 Display color – map reference colors Reset to Factory Default Colors Display color – palette Normal Display color – palette colors The colors of each palette are reset to factory hue, saturation, and lightness (HLS) values D–1 TLS 216 User Manual...
Page 287 Main trigger holdoff Main trigger mode Auto Main trigger type Edge Measure Delay to Channel 1 (Ch1) Measure Delay edges Both rising and forward searching Measure High-Low Setup Histogram Measure High Ref 90% and 0 V (units) D–2 TLS 216 User Manual...
Page 288 Pulse width trigger when qualifier (Main and Within limits Delayed) Pulse width upper limit (Main and Delayed) 2.0 ns Pulse width lower limit (Main and Delayed) 2.0 ns Pulse width trigger polarity (Main and Delayed) Positive D–3 TLS 216 User Manual...
Page 289 Zoom horizontal (all groups) 1.0X Zoom horizontal lock Zoom horizontal position (all groups) 50% = 0.5 (the middle of the display) Zoom state Zoom vertical (all groups) 1.0X Zoom vertical position (all groups) 0 divs. D–4 TLS 216 User Manual...
Page 290 Glossary...
Page 291 A logic (Boolean) function in which the output is true when and only when all the inputs are true. On the logic scope, that is a trigger logic pattern and state function. Area Measurement of the waveform area taken over the entire waveform or the Glossary–1 TLS 216 User Manual...
Page 292 This position is ground when offset if set to 0 V; otherwise, it is ground plus offset. In BusForm display mode, the indicator points to the midpoint between the HIGH and LOW logic levels for all waveforms in the group. Glossary–2 TLS 216 User Manual...
Page 293 The part of the logic scope that shows waveform groups, measurements, menu items, status, and other parameters. Edge Trigger Triggering occurs when the logic scope detects the source passing through a specified voltage level in a specified direction (the trigger slope). Glossary–3 TLS 216 User Manual...
Page 294 The logic scope provides up to eight groups of up to 16 channels. Channels must be defined to be part of a group to be displayed. Hardcopy An electronic copy of the display in a format useable by a printer or plotter. Glossary–4 TLS 216 User Manual...
Page 295 The value used as 0% in automated measurements (whenever high ref, mid ref, and low ref values are needed as in fall time and rise time measure- Glossary–5 TLS 216 User Manual...
Page 296 50%)—on a negative pulse. Normal trigger mode A mode on which the logic scope does not acquire a waveform record unless a valid trigger event occurs. It waits for a valid trigger event before acquiring waveform data. Glossary–6 TLS 216 User Manual...
Page 297 You can cycle through the options in a pop-up menu by repeatedly pressing the main menu button underneath the pop-up. Glossary–7 TLS 216 User Manual...
Page 298 The specified number of samples in a waveform. Reference memory Memory in a logic scope used to store waveform groups or logic scope control setups. You can later use the waveform data stored for processing. Glossary–8 TLS 216 User Manual...
Page 299 The time between the last transition to a legal state for a waveform bus relative to the clocking edge of the waveform specified as the clock. The clock can be any channel. It does not have to be included in the measured group. Glossary–9 TLS 216 User Manual...
Page 300 Timing Diagram mode to measure timing relationships between the waveforms included in the group. (Also see Analog Mode, Timing Diagram Mode, and OFF Mode.) Toggle button A button that changes which of the two cursors is active. Glossary–10 TLS 216 User Manual...
Page 301 The time interval between record points as displayed. YT format The conventional logic scope display format. It shows the voltage of a waveform record (on the vertical axis) as it varies over time (on the horizontal axis). Glossary–11 TLS 216 User Manual...
Page 302 Glossary Glossary–12 TLS 216 User Manual...
Page 303 Index...
Page 304 Amplitude, B–4 Automatic trigger mode, 2–15, Glossary–2 Area, B–4 Autoset, 1–14, 2–26, 3–13, Glossary–2 Burst Width, B–5 Autosetting the Logic Scope, 3–13 Cycle Area, B–5 Clipping with, 3–14–3–16 Cycle Mean, B–5 Defaults after executing, 3–15 Index–1 TLS 216 User Manual...
Page 305 How to change in a palette, 3–43 SET LEVEL TO 50%, 3–159 How to change the color of a group, 3–44, 3–45 SHIFT, 3–8 How to highlight waveform overlaps, 3–46 Side menu, 2–3 How to restore defaults, 3–46 Index–2 TLS 216 User Manual...
Page 306 Delay To, Measure Delay menu, 3–75, 3–77 Cursor, 2–28, 3–81–3–86, Glossary–3 Delayed Only, Horizontal menu, 3–5, 3–124 Binary readout with, 3–83 Delayed runs after main, 2–17–2–18 Description of, 3–81 Delay mode, 3–121 Faster positioning, 3–85 Horizontal bar, 2–28, 3–81 Index–3 TLS 216 User Manual...
Page 307 Either, Main Trigger menu, 3–144, 3–145 Contrast, 3–37 empty, Saved waveform status, 3–110 Display, 3–35 Encapsulated Postscript, 3–87 Display ‘T’ @ Trigger Point, 3–37 End, Measurement variable, B–2 Intensity, 3–37–3–40 End Pattern Logic Func, Main Trigger menu, 3–152 Overall, 3–37 Index–4 TLS 216 User Manual...
Page 308 How to delete, 3–59 Wild cards, 3–61 How to remove from display, 3–119 Filter, Display settings menu, 3–38, 3–39 How to select, 3–117 Firmware version, 3–173 Multiple channel operation, 1–17 Fit to screen, Horizontal menu, 3–5 readout, 3–57 Index–5 TLS 216 User Manual...
Page 309 Vertical Controls, 3–9 PCX, 3–89 Vhigh, min, 3–28 PCX Color, 3–89 Vlow, max, 3–28 Port, 3–89 Group mode, OFF, 3–29 Portrait, 3–89 Group Modes, Description of, 3–23 RLE Color, 3–89 GROUP OFF button, 3–29, 3–119 Index–6 TLS 216 User Manual...
Page 310 Keypad, 1–27, 2–7 Knob, Glossary–5 Set to 50%, 3–5, 3–6 Set to 80%, 3–5 General purpose, 1–26, 2–7, Glossary–4 Horizontal POSITION, 1–13, 2–24, 3–3 Set to 90%, 3–6 Horizontal SCALE, 1–13, 2–24, 3–3 Time Base, 3–5, 3–124 Index–7 TLS 216 User Manual...
Page 311 Low Ref, 3–74 Define Pattern, 3–135, 3–151, 3–152, 3–168 Mid Ref, 3–74 Edge, 3–128, 3–162 Mid2 Ref, 3–74 Either, 3–144, 3–145 Min-Max, 3–73 End Pattern Logic Func, 3–152 Reference Level, B–2 Glitch, 3–143 Reference Levels, 3–73 Index–8 TLS 216 User Manual...
Page 312 Propagation delay, 3–68 Monochrome, Color menu, 3–42 Readout, 3–67, 3–71 MORE button, 3–26, 3–58, 3–113, 3–117, 3–119 Reference levels, 1–25 More menu, 2–11, 3–113 Rise time, 1–24, 3–70, Glossary–9 Reference waveform status, 3–113 RMS, 3–70, Glossary–9 Index–9 TLS 216 User Manual...
Page 313 Probe accessories Palette, Hardcopy menu, 3–89 Dual-lead adapter, 3–101, 3–102 Pattern, Main Trigger menu, 3–133 Eight-wire loom, 3–102 Pattern, Triggering on, 3–131 Pattern trigger, 3–131–3–140, 3–147–3–158 Flex adapter, 3–101 Ground lead, 3–100 Definitions, 3–131, 3–132 Index–10 TLS 216 User Manual...
Page 314 Trigger Level Bar, 3–37 Rise time, 1–24, 3–70, Glossary–9 Trigger Point, 3–37 Measurement algorithm, B–11 Vertical, 3–9, 3–25 Rising edge, Main Trigger menu, 3–128 vertical, 3–56 RLE Color, Hardcopy menu, 3–89 Readout options, How to set, 3–37 Index–11 TLS 216 User Manual...
Page 315 Selected Channel, Significance of, 3–117 Slope, Main Trigger menu, 3–128 Selected Channel, Group menu, 3–14 Slope, Trigger, 2–17 Selected Group, Significance of, 3–117 SMT KlipChip, 3–100 Selected group, Glossary–9 Snapshot, Readout, 3–78 How to check for, 3–117 Index–12 TLS 216 User Manual...
Page 316 Taking Measurements Automatically, Tutorial Example, State, 3–165–3–170 1–23 Status Lights, 3–160 Talk/Listen Address, Utility menu, 3–33 Types, 3–162–3–164 Tek Secure, 3–108, Glossary–10 Width, 3–141, 3–145 Tek Secure Erase Memory, Utility menu, 3–108 Trigger Bar, 2–6 Temperature compensation, 3–53–3–54 Index–13 TLS 216 User Manual...
Page 317 Waveform, Glossary–11 System, 3–88 Edge triggering on, 3–127 Talk/Listen Address, 3–33 Interval, Glossary–11 Tek Secure Erase Memory, 3–108 Off priority, 3–120 Waveform group, 3–55 see Group, Glossary–4 Waveform memory, 3–114 Variable Persistence, Display settings menu, 3–37 Index–14 TLS 216 User Manual...
Page 318 ZOOM button, 3–176 Width, Main Trigger menu, 3–145 Zoom feature, 2–26 Zoom menu Horizontal Lock, 3–177 Reset Zoom Factors, 3–178 Zoom Off, 3–178 Y-lead adapter, 3–100 Zooming on Waveforms, Reference Article, 3–175 YT format, Glossary–11 Index–15 TLS 216 User Manual...
Page 319 Index Index–16 TLS 216 User Manual...

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