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Creating and Using Math Waveforms

3- 136

TDS5000 Series User Manual

Normal waveform of an

impulse response

FFT waveform of the

magnitude response

FFT waveform of the

phase response

Figure 3- 38: Spectral analysis of an impulse

About Math Waveforms

This oscilloscope supports mathematical combination and functional trans-

formations of waveforms it acquires. Figure 3--39 shows this concept:

Channel waveform

(Ch2)

Math waveform

(Math1)

Diff(Ch2)

Math expression

(Function(source))

Figure 3- 39: Functional transformation of an acquired waveform

NOTE

. Some of the math functions are only available if you purchase and install

TDS5UP Option 2A, Advanced Analysis (see Table 3--10).

Purpose

Summary of Contents for TDS5054

Page 1: ...furbished and purchasing new Financing options such as Financial Rental and Leasing are also available on application TMG will assist if you are unsure whether this model will suit your requirements C...

Page 2: ...User Manual TDS5000 Series Digital Phosphor Oscilloscopes 071 0876 02 This document applies to firmware version 1 00 and above www tektronix com...

Page 3: ...tion in this publication supercedes that in all previously published material Specifications and price change privileges reserved Tektronix Inc P O Box 500 Beaverton OR 97077 TEKTRONIX TEKPROBE and TE...

Page 4: ...tions This warranty shall not apply to any defect failure or damage caused by improper use or improper or inadequate maintenance and care Tektronix shall not be obligated to furnish service under this...

Page 5: ......

Page 6: ...cope 1 9 Creating an Emergency Startup Disk 1 9 Backing Up User Files 1 10 Installing Software 1 10 Connecting to a Network 1 12 Setting up a Dual Display 1 13 Adjusting Display Contrast 1 17 Incoming...

Page 7: ...des 3 25 Starting and Stopping Acquisition 3 26 Using Roll Mode 3 28 Acquisition Control Background 3 29 Acquisition Hardware 3 30 Sampling Process 3 30 Sampling Modes 3 31 Waveform Record 3 31 Real t...

Page 8: ...quisition Preview 3 101 Display Methods 3 101 Displaying Waveforms in the Main Graticule 3 104 Customizing the Waveform Display 3 106 Using Display Controls 3 106 Using the Zoom Feature 3 110 Using Zo...

Page 9: ...3 205 Printing from the Front Panel 3 205 Printing from the Menu Bar 3 205 Setting Up the Page 3 205 Previewing the Page 3 205 Printing Banners 3 206 Using Print Screen 3 207 Using the Date Time Stamp...

Page 10: ...D 7 Standard Math Commands D 8 Advanced Math Commands Optional D 9 Utilities Commands D 10 Help Commands D 10 Appendix E Optimizing Measurement Accuracy E 1 Compensating the Oscilloscope E 1 Connectin...

Page 11: ...the vertical acquisition window on the waveform 3 17 Figure 3 5 Horizontal acquisition window definition 3 18 Figure 3 6 Common trigger record length and acquisition rate for all channels 3 20 Figure...

Page 12: ...view and measurement data 3 131 Figure 3 37 Math waveform created from source waveform 3 135 Figure 3 38 Spectral analysis of an impulse 3 136 Figure 3 39 Functional transformation of an acquired wav...

Page 13: ...cy graphs of the Blackman Harris window 3 169 Figure 3 56 Time and frequency domain graphs for the Flattop2 window 3 170 Figure 3 57 Tek Exponential window in the time and the frequency domains 3 171...

Page 14: ...ursor types 3 124 Table 3 9 Cursor units 3 126 Table 3 10 Functions available in Standard Math and Advanced Math 3 137 Table 3 11 Math expressions and the math waveforms produced 3 138 Table 3 12 Spec...

Page 15: ...s D 3 Table D 4 Horiz Acq menu commands D 4 Table D 5 Trig menu commands D 5 Table D 6 Display menu commands D 6 Table D 7 Cursors menu commands D 7 Table D 8 Measure menu commands D 7 Table D 9 Stand...

Page 16: ...avoid electric shock the grounding conductor must be connected to earth ground Before making connections to the input or output terminals of the product ensure that the product is properly grounded Ob...

Page 17: ...n 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 WARNING indicates...

Page 18: ...ating Basics uses maps to describe the various interfaces for controlling the oscilloscope including the front panel and the software user interface These maps provide overviews of the product and its...

Page 19: ...s with this product The help is preinstalled in the oscilloscope TDS5000 Series Digital Phosphor Oscillo scopes Reference Manual A quick reference to major features of the oscilloscope and how they op...

Page 20: ...es support 1 800 833 9200 select option 1 Service support 1 800 833 9200 select option 2 Technical support Email techsupport tektronix com 1 800 833 9200 select option 3 6 00 a m 5 00 p m Pacific time...

Page 21: ...Preface xvi TDS5000 Series User Manual...

Page 22: ...between the oscilloscopes are noted when necessary Key Features TDS5000 Series oscilloscopes are high performance solutions for verification debugging and characterization of sophisticated electronic...

Page 23: ...ouch screen H Optional CD RW drive Product Software The oscilloscope includes the following software H System Software The product software runs on a specially configured version of Windows 2000 Windo...

Page 24: ...ion you need to program the oscilloscope through its GPIB interface H Performance Verification Procedures The product CD ROM contains instructions to perform a manual performance verification See the...

Page 25: ...AC DC TCP202 TCP202 TCP202 Low Capacitance P6158 P6158 P6158 H P5050 10X 500 MHz passive probe H P5100 100X 250 MHz passive high voltage probe H P6015A 1000X 100 MHz passive high voltage probe H P624...

Page 26: ...isk as described on page 1 9 You may need that disk if you ever need to reinstall Windows 2000 on the oscilloscope hard drive Unpacking The graphical packing list shows the standard accessories that y...

Page 27: ...re proper cooling keep the bottom and left side of the oscilloscope clear of obstructions The Specifications in Appendix A list the power source temperature humidity and altitude operating requirement...

Page 28: ...ase reference input EXT REF Trigger signal output AUX OUT CH 3 signal outpuT SIGNAL OUT USB These connectors are on later model insturments only Figure 1 1 Locations of connectors on side and rear pan...

Page 29: ...scilloscope Follow these steps to power on the oscilloscope for the first time CAUTION To ensure proper operation connect the keyboard mouse and other accessories before applying power to the product...

Page 30: ...you have completed the basic installation process you should create an emergency startup disk that you can use to restart your oscilloscope in case of a major hardware or software failure Store this...

Page 31: ...scilloscope application by selecting the File menu Exit command 2 Click the Windows Start button 3 Select Programs Accessories System Tools Backup 4 Use the Backup Wizard to select the items you want...

Page 32: ...s including syntax and examples H Status and error messages H Programming examples The programmer information is also available as a PDF file on the TDS5000 Series Product Software CD ROM Manual Perfo...

Page 33: ...instructions Connecting to a Network You can connect the oscilloscope to a network to enable printing file sharing internet access and other communications functions Before you make the connection do...

Page 34: ...t faster with network access disabled Setting up a Dual Display Dual display lets you view Windows and other applications on an external monitor while running the oscilloscope You can also drag up to...

Page 35: ...use on the external monitor 16 bit or better 11 Click on the external monitor in the display box and drag the external monitor to the correct orientation CAUTION Do not change the resolution settings...

Page 36: ...is attached to the instrument display Monitor 1 is the disabled monitor 10 Set the resolution that you want to use on the external monitor 24 bit or better 11 Click on the external monitor in the dis...

Page 37: ...icons on the internal monitor and drag the icons to a position on the external monitor 4 If you use the oscilloscope online help system you can drag the help windows to the external monitor so that y...

Page 38: ...ht click with the mouse on the Windows desktop 2 Select Properties 3 Select the Settings tab 4 Click Advanced 5 Select the Chips tab 6 Click Gamma 7 Adjust slider control for desired contrast 8 Right...

Page 39: ...Installation 1 18 TDS5000 Series User Manual...

Page 40: ...OMPENSATION connector H Perform the Extended Diagnostics on page 1 30 provides instructions for performing internal self calibration and the extended diagnostics If the oscilloscope fails any test wit...

Page 41: ...input signals from all four channels H Click Run in the Instrument Diagnostics control window c Wait The internal diagnostics do an exhaustive verification of proper oscilloscope function taking five...

Page 42: ...to verify that a signal appears on screen that is about five divisions in amplitude or has a period of about six horizontal divisions and so on do not interpret the quantities given as limits Do not m...

Page 43: ...test beginning with CH 1 as shown in Figure 1 4 TDS5000 oscilloscope Connect probe from PROBE COMP terminal to CH 1 input Figure 1 4 Universal test hookup for functional tests CH 1 shown 3 Turn off a...

Page 44: ...isions in amplitude is on the screen Vertical scale readout Horizontal scale readout Figure 1 6 Location of vertical and horizontal scale readouts H The front panel VERTICAL POSITION knob for the chan...

Page 45: ...peaks of consecutive sample intervals displayed Therefore the noise seen in Sample mode is visible here as well H Hi Res mode displays an actively acquiring waveform with the noise that was seen in Sa...

Page 46: ...4 Set the time base Use the front panel HORIZONTAL SCALE knob to set the horizontal scale to 200 s div The time base readout is displayed at the bottom of the graticule see Figure 1 6 5 Verify that t...

Page 47: ...ck ENTER c Verify the waveform Verify that a falling edge of the waveform is within a few divisions of the center graticule d Adjust the horizontal delay Rotate the upper multipurpose knob to change t...

Page 48: ...igure 1 8 Setup for trigger test 3 Set up the oscilloscope Push the front panel AUTOSET button 4 Verify that the main trigger system operates Confirm that the following statements are true H The trigg...

Page 49: ...evel changes as you turn the lower multipur pose knob H As you rotate the lower multipurpose knob the square wave probe compensation signal can become triggered and untriggered Leave the signal trigge...

Page 50: ...floppy disk in the floppy disk drive at the top of the front panel 4 Set up the oscilloscope Push the front panel AUTOSET button 5 Set the time base Set the HORIZONTAL SCALE to 1 ms div The time base...

Page 51: ...en cycles just as it did when you saved the setup 9 Remove the test hookup a Disconnect the probe from the channel input and the probe compensation terminal b Remove the floppy disk from the floppy di...

Page 52: ...M 500k on 1 2 4 channels 2M 1M on 1 2 channels on TDS5052 2M 8M 4M 2M on 1 2 4 channels 8M 4M on 1 2 channels on TDS5052 Mounting options 1K K420 oscilloscope cart with mouse accessory tray 1R Rackmou...

Page 53: ...t for Option C3 R3 Additional 2 years of repair C5 Additional 4 years of calibration D5 Calibration data report for Option C5 R6 Additional 4 years of repair You can order the upgrade kits shown in Ta...

Page 54: ...SDDM2 Disk drive measurements software Option J23 TDSJIT2 TDSJIT3 upgrade Option JT3 TDSJIT3 Jitter timing analysis with Rj Dj and BER estimation Option PWR TDSPWR2 Power analysis software Option USB...

Page 55: ...ting System Restore CD ROM 063 3509 xx Optional Applications Software for Tektronix Windows Based TDS Instruments CD ROM and manuals 020 2450 xx Calibration Certificate documenting NIST traceability Z...

Page 56: ...probe P6246 TCP202 current probe TCP202 CT 6 current probe CT 6 AM503S DC AC current measurement system AM503S AMT75 1 GHz 75 adapter AMT75 P5205 high voltage differential probe P5205 P5210 high volta...

Page 57: ...control and waveform data acquisition WSTRO TDSPWR2 power measurement software TDSPWR2 TDSDVD optical storage analysis software TDSDVD Wavewriter AWG and waveform creation software S3FT400 VocalLink v...

Page 58: ...anel and cross references information relevant to each element H User Interface Map on page 2 5 describes the elements of the User Interface UI application which provides complete control of the oscil...

Page 59: ...ine Help System Access online help from the oscilloscope UI for information on virtually all controls and elements on screen Online help includes instructions for using oscilloscope functions See Acce...

Page 60: ...TDS5000 Series User Manual 2 3 Front Panel I O Map Floppy disk drive On Standby switch Probe Compensation terminal Auxiliary input Channel inputs Control panel...

Page 61: ...or change the input termination Page 3 4 Horizontally scale position delay and set record length resolution Page 3 18 Turn the knob to adjust waveform intensity Page 3 40 Push to turn cursors on or of...

Page 62: ...rsor readouts and measurement readouts in this area selectable from the menu bar or tool bar If a control menu is displayed these readouts move to the graticule area Controls Status Quick reference to...

Page 63: ...on a waveform Drag across the waveform area to create a box for zooming enabling disabling histograms and gating measurements Drag cursors to measure waveforms on screen Click the icon to assign the m...

Page 64: ...ect a monitor for side by side display Lower VGA port to connect a monitor for oscilloscope display PS 2 connectors for mouse and keyboard Parallel port Centronics to connect printer or other device G...

Page 65: ...49 Ref 1 4 Display and UI Signal Processing and Transformation Page 3 99 The oscilloscope has four high level subsystems or processes consisting of both hardware and software functions and the data t...

Page 66: ...o a digital format H Signal Processing and Transformation Performs transformations or operations on user specified waveform data channel reference and or math waveforms Automatic measurements spectral...

Page 67: ...retrigger points current until triggering criteria are met or a trigger is forced Auto trigger mode only The oscilloscope accepts the trigger Acquire posttrigger points 5 The oscilloscope acquires sam...

Page 68: ...Overview of signal connection and conditioning techniques and setups 3 4 Autosetting the Oscilloscope Automatic setup of the acquisition triggering systems and input channels 3 12 Input Conditioning B...

Page 69: ...Waveforms Functions for processing waveforms extracting segments of waveforms etc 3 135 Spectral Math operations Defining Spectral Math Waveforms Functions for frequency domain analysis of your wavef...

Page 70: ...isition mode for acquiring waveforms starting and stopping acquisition H Acquisition Control Background Background information on the data sampling and acquisition process H Using Fast Acquisition Mod...

Page 71: ...els and adjusting vertical scale position and offset H Setting horizontal scale and position and accessing record length and trigger position controls H Getting a basic trigger on your waveform NOTE T...

Page 72: ...control by control setup The oscilloscope can also be reset to its factory default settings by pushing the front panel DEFAULT SETUP button Use of some input conditioning controls or features may be l...

Page 73: ...loscope determines the coupling and termination required by the probe either implicitly because of the TEKPROBE interface or through performing a probe calibration the oscilloscope sets the required c...

Page 74: ...vertical acquisition window is clipped that is the data is limited to the minimum or maximum boundaries of the vertical acquisition window This causes inaccuracies in amplitude related measure ments R...

Page 75: ...setup and page 3 49 for trigger setup Connect input signal 2 Connect the probe to the input signal source using proper probing connecting techniques Note For more details on input setup access online...

Page 76: ...ng select the appropriate channel tab and click H DC to couple both the AC and DC components of an input signal H AC to couple only the AC components of an input signal H GND to disconnect the input s...

Page 77: ...tion window 7 Use the vertical knobs to scale and position the waveform on screen Positioned vertically Scaled vertically 8 Open the Vertical Setup control window as described in Step 5 To change the...

Page 78: ...mple interval Refer to the discussion on page 3 19 If required to stabilize the display push the trigger LEVEL control to set the trigger level to 50 Dragging the reference icon also positions the wav...

Page 79: ...ing source must be provided Refer to page 3 49 in this manual for trigger setup information Execute Autoset 2 Push the AUTOSET button to execute an Autoset If you use Autoset when one or more channels...

Page 80: ...The Autoset Undo control window remains on the screen until you open another control window After Autoset Undo closes you can still undo the last Autoset by selecting the Undo Last Autoset command fr...

Page 81: ...clipping H Set the trigger to the approximate midlevel of the signal being Autoset and switches to edge trigger mode H Evaluate the signal transitions and set the horizontal scale to produce a wavefo...

Page 82: ...example peak to peak and RMS will be accurate for vertical windows like those shown in Figures 3 3a and b because neither waveform is clipped that is both waveforms are acquired But if signal amplitud...

Page 83: ...ticule Vertical window Channel reference indicator Graticule 0 7 Volt 0 1 Volt Vertical window Channel reference Indicator Graticule 1 0 Volt 1 0 Volt 1 0 Volt 1 0 Volt 1 1 Figure 3 3 Setting vertical...

Page 84: ...w offset moves the acquisition window to control the portion of the waveform amplitude the window captures H Applying a negative offset set moves the vertical range down relative to the DC level of th...

Page 85: ...the point on the waveform that triggers the oscilloscope H Horizontal Position Determines the number of pretrigger and posttrigger samples samples before the trigger point are pretrigger samples and...

Page 86: ...l acquisition window time duration and Sample Interval sec sample Resolution sec sample 1 Sample Rate samples sec Note that it is the Sample Interval that changes to accommodate the window Time Durati...

Page 87: ...control window Independent vs Shared Window The oscilloscope applies the same horizontal acquisition window to all channels from which it acquires data Unlike the vertical acquisition window that you...

Page 88: ...lution lower bandwidth waveform This mode only works with real time noninter polated sampling A key advantage of Hi Res mode is its potential for increasing resolution regardless of the input signal T...

Page 89: ...his button or press the SINGLE front panel button to set the oscilloscope to automatically stop acquisition when one complete acquisition sequence is completed Refer to step 4 Set the Stop mode on pag...

Page 90: ...single sequence to save data for later viewing For example at 20 seconds per division and 30 K record length there are 12000 seconds of acquired data points Acquisitions continue Untriggered roll Com...

Page 91: ...ampled at a rate faster than 1 Gigasamples sec ond to represent it accurately and to avoid aliasing The following tips may help you eliminate aliasing on a signal H Adjust the horizontal scale H Push...

Page 92: ...rforming the procedure Overview To set acquisition modes Control elements and resources Prerequisites 1 Oscilloscope must be powered on with horizontal and vertical controls set up Triggering should a...

Page 93: ...enu to open the Horizontal Acquisition Setup control window Select the Acquisition tab 7 Select Equivalent Time Auto or Off H Auto uses both real time and equivalent time sampling as appropriate see T...

Page 94: ...uisition Acquisition will also stop if triggering ceases while in normal trigger mode Take a single acquisition 4 Push the front panel SINGLE button to start acquiring and acquire enough waveforms to...

Page 95: ...window Select the Acquisition tab 3 Click Roll Mode Auto to enable roll mode The resolution record length horizontal scale and number of active channels on are dependent variables Therefore the faste...

Page 96: ...n to open the Horizontal Acquisition Setup control window Select the Acquisition tab 7 Click Roll Mode Off to disable roll mode NEEDS PICTURE Roll mode is also disabled when you set the horizontal sca...

Page 97: ...ing of channels Digitizer CH 1 Digitizer CH 2 Digitizer CH 3 Digitizer CH 4 Figure 3 9 Digitizer configuration Acquisition is the process of sampling an analog signal converting it into digital data a...

Page 98: ...arameters define the waveform record They define how much data is taken and from where in the data stream The parameters are H Sample Interval The time between sample points taken during acquisition H...

Page 99: ...y and becomes available for display or use in math waveforms storage and so on For a control oriented discussion of the waveform record refer to Horizontal Acquisition Window Considerations on page 3...

Page 100: ...sitions of a repetitive waveform to obtain the sample density required for one complete waveform record See Figure 3 13 Equivalent time sampling should only be used on repetitive signals 1st acquisiti...

Page 101: ...only when it does not have all of the actual samples it needs to fill its displayed waveform For instance if you set ZOOM to progressively larger amounts of expansion the oscilloscope interpolates to...

Page 102: ...to equivalent time sampling to obtain additional samples Refer to Equivalent time Sampling on page 3 33 Table 3 3 How interleaving affects sample rate Number of channels in use Maximum digitizing rat...

Page 103: ...ects sample rates up to 1 25 GS s and record lengths up to 1 000 000 points and compresses them to 500 pixels to produce the maximum display content Waveform Capture Rate Figures 3 14 and 3 15 illustr...

Page 104: ...ents will accumulate in waveform memory The oscilloscope then updates the display at the normal display rate You can control the waveform intensity using adjustable or automatic brightness refer to pa...

Page 105: ...acquisitions display Fast acquisitions display Dead time Dead time Dead time Normal DSO Mode Fast Acquisitions Mode 1st acquired waveform record Waveform memory bit maps Waveform memory Waveform memo...

Page 106: ...de will stay on until you turn it off or until you select an incompatible mode that inhibits Fast Acquisitions Set the display appearance 4 Click the DISP toolbar button or select the Display Setup co...

Page 107: ...ent H Off creates a display like an analog oscilloscope The displayed brightness depends on the trigger rate 12 Rotate the front panel INTENSITY knob to adjust the intensity of displayed waveforms or...

Page 108: ...is at center screen and each division of display in YT mode produces a division of display in XY mode In XY format any channel displayed is assigned to the axis indicated in Table 3 4 and displayed a...

Page 109: ...cord individually FastFrame lets you quickly capture multiple acquisitions in the acquisition memory of a single channel Figure 3 17 shows how FastFrame combines the desired captured frames into one l...

Page 110: ...u will see the current acquisition sequence otherwise the display lags the current sequence by one sequence You can also see the current sequence by pushing the RUN STOP button to stop the acquisition...

Page 111: ...iggering also See page page 3 25 for acquisition setup page 3 49 for trigger setup To set FastFrame mode 2 Click the Horiz button Select the Acquisition tab from the Horiz Acq control window Click Fas...

Page 112: ...ob or keypad to enter the number of the specific frame you want to view The frame that you select appears on the display To view multiple f rames 8 In the Frame Viewing controls click Multiple Frames...

Page 113: ...g format Sel Ch F xxx DD MMM YYYY HH MM SS mmm nnn ppp Ref Ch F xxx DD MMM YYYY HH MM SS mmm nnn ppp DD MMM YYYY HH MM SS mmm nnn ppp Where Sel and Ref Ch F xxx are the selected or reference frame num...

Page 114: ...Frame controls 7 In the FastFrame controls window touch Selected Frame Source and select the source of the frame you want to view 8 Under Selected Frame click Frame and use the general purpose knob or...

Page 115: ...uch either Frame Tracking Live or All to lock the reference and position frames together When the frames are locked they maintain the same relative distance from each other when either frame is adjust...

Page 116: ...ring from the Front Panel Using the front panel triggering controls H Additional Trigger Parameters Accessing common trigger functions in the Trigger Setup control window H Advanced Triggering Trigger...

Page 117: ...ntil the acquisition is complete and the holdoff time has expired The trigger source provides the signal that triggers acquisition Use a trigger source that is synchronized with the signal that you ar...

Page 118: ...vailable on the main trigger only H Video triggers are used to trigger the oscilloscope on specified fields or lines of a video signal You can use one of several preset video signal formats or set a c...

Page 119: ...occurs With a shorter holdoff set for the bottom waveform triggers all occur on the first pulse in the burst to remedy the unstable trigger Holdoff Holdoff Holdoff Trigger level Holdoff Holdoff Holdo...

Page 120: ...tton on the front panel to toggle between the positive going and negative going edge The level control determines where on that edge the trigger point occurs see Figure 3 22 You can set the trigger le...

Page 121: ...ntrols Overview Triggering from the front panel Control elements and resources Prerequisites 1 Set the acquisition system to RUN the RUN STOP control is lighted and set the vertical and horizontal con...

Page 122: ...the halfway point between the peaks of the trigger signal This function has no effect for the other trigger types You can also click Set 50 in the Trigger Setup control window Select the trigger sourc...

Page 123: ...s of an input signal H HF REJ attenuates signals above 30 kHz H LF REJ attenuates signals below 80 kHz H NOISE REJECT provides lower sensitivity reducing the chance of falsely triggering on noise Sele...

Page 124: ...valid trigger to occur H If ARM is on the trigger circuitry is filling the pretrigger portion of the waveform record H If both TRIG D and READY are on a valid A event trigger has been recognized and...

Page 125: ...the Waveform Display on page 3 106 for instructions on setting the indicator The trigger level indicator remains on the screen as long as the channel providing the trigger source is displayed You can...

Page 126: ...holdoff Change the holdoff time to help stabilize triggering see Trigger Holdoff on page 3 52 To set holdoff 1 Push the front panel ADVANCED button 2 On the Trigger Setup control window select the Mo...

Page 127: ...igger level at a user preset voltage see Steps 9 through 12 When you set the volts div smaller than 200 mV the oscilloscope reduces the TTL or ECL trigger levels below standard TTL and ECL levels This...

Page 128: ...e signal for example push LEVEL to set 50 check the trigger source setting and so on The oscilloscope acts on Force Trigger even if selected before the end of pretrigger holdoff However the button has...

Page 129: ...cope to trigger on glitches of either polarity or to reject glitches of either polarity Runt Trigger A runt trigger occurs when the oscilloscope detects a short pulse that crosses one threshold but fa...

Page 130: ...he condition for triggering the Boolean function becomes True logic high or False logic low and whether the True condition is time qualified Pattern trigger logic choices are summarized in Table 3 5 S...

Page 131: ...s NOR Clocked NOR If none of the preconditions selected for the logic inputs3 are TRUE then the oscilloscope triggers 1 For state triggers the definition must be met at the time the clock input change...

Page 132: ...data and clock sources When a clock edge occurs the oscilloscope checks the data stream it is processing from the data source for transitions occurring within the setup hold violation zone If any occ...

Page 133: ...tup Hold violation zone TS TH TS TH must be 2 ns Clock signal Clock level Clock signal Clock level Negative TS Positive TH Positive TS Negative TH TH TH TS TH TS TS Setup Hold violation zone Setup Hol...

Page 134: ...er the instrument as the signal is entering or leaving the threshold window You can further qualify the trigger event in terms of time or by the logical state of other channels Video Trigger Use the V...

Page 135: ...oing pulses H Neg looks at negative going pulses H Either looks at both positive and negative pulses 6 To specify the width of the glitch click Width and set the glitch width using the multipurpose kn...

Page 136: ...and holdoff can be set for all standard trigger types Refer to Select the trigger mode on page 3 56 and Set holdoff on page 3 59 To learn more about trigger mode and holdoff see Trigger Modes on page...

Page 137: ...ime or by the logical state of other channels Overview To trigger on a runt pulse Control elements and resources Select runt triggering 1 Push the front panel ADVANCED button 2 On the Trigger Setup co...

Page 138: ...e then recrossed going negative without the upper threshold being crossed at all H Neg looks at negative going pulses The upper threshold must be first crossed going negative then recrossed going posi...

Page 139: ...ge is greater than the specified threshold voltage a value is considered low if the channel input voltage is less than the specified threshold voltage Use the don t care selection for any channels tha...

Page 140: ...lse click Pos for positive going pulses or Neg for negative going pulses Set the range 6 To set the range of pulse widths in units of time click Upper or Lower Limit and enter the values with the mult...

Page 141: ...ode and holdoff can be set for all standard trigger types Refer to Select the trigger mode on page 3 56 and Set holdoff on page 3 59 To learn more about trigger mode and holdoff see Trigger Modes on p...

Page 142: ...source 4 To specify which channel becomes the trigger source click Source and select the source from the list Select the polarity 5 Select a Polarity value to specify the direction of the pulse edge...

Page 143: ...u set above Click Trigger When Transition Time to trigger when the transition time is greater than the time you set above If you select Trigger When Transition Time greater than and the oscilloscope d...

Page 144: ...A Event tab 3 Click Timeout Select the source 4 To specify which channel becomes the trigger source click Source and select the source from the list Set the level 5 To set the trigger timeout level c...

Page 145: ...rigger level for longer than the timeout Timer value H Either to trigger if the signal stays lower or stays higher than the trigger level for longer than the timeout Timer value Set mode and holdoff 8...

Page 146: ...pattern Each channel can have a value of high H low L or don t care X A value is considered high if the channel input voltage is greater than the specified threshold voltage a value is considered low...

Page 147: ...patterns are false The list items More Than and Less Than are used to time qualify a pattern trigger See Step 9 for instructions Set mode and holdoff 8 Mode and holdoff can be set for all standard tr...

Page 148: ...er than the time you specify The oscilloscope determines the trigger point in the following manner H It waits for the logic condition to become True H It starts timing and waits for the logic function...

Page 149: ...hannel Channels 1 2 and 3 represent the data inputs Channel 1 only on the TDS5052 Channel 4 Channel 2 on the TDS5052 should be connected to the clock signal The channel inputs combine to form a logic...

Page 150: ...ine when the oscilloscope should trigger Select True to trigger the oscilloscope when the logic patterns go true Select False to trigger the oscilloscope when the logic patterns go false For simplest...

Page 151: ...t the data source 4 To select the channel that is connected to the data signal click Data Source and select the source from the list Do not select the same channel for both the data and clock sources...

Page 152: ...e knob or pop up keypad to set the hold time relative to the clock Positive setup time always leads the clock edge positive hold time always follows the clock edge Setup time always leads the hold tim...

Page 153: ...thin 14 88 ns after the clock violating the hold time limit The oscilloscope recognizes the violation and triggers at the clock edge Cursors measure the setup hold violation zone which equals setup ti...

Page 154: ...ush the front panel ADVANCED button 2 On the Trigger Setup control window select the A Event tab 3 Click Window Select the source 4 To specify which channel becomes the trigger source click Source and...

Page 155: ...signal entering or leaving the window defined by the threshold levels it checks the logic state of up to two other available channels and triggers only if their conditions are met Each channel can hav...

Page 156: ...r source click Source and select the source from the list Select the format 5 Select the video signal format from several preset formats or set a custom format If using a preset format click the Lines...

Page 157: ...Time or By Fields and use the multipurpose knob to change the value If setting a Custom format only the By Time control is available Select the polarity and graticule type 8 Select Normal or Inverted...

Page 158: ...e oscilloscope triggers on the nth B event You can set the number of B events with the keypad or the multipurpose knobs NOTE The traditional delayed trigger mode called Runs After is served by the TDS...

Page 159: ...ay time Waiting for nth event where n 5 A trigger point Start posttrigger acquisition A trigger source Trig on nth Event A trigger source B trigger source B trigger point Start posttrigger acquisition...

Page 160: ...hen horizontal delay is on Each illustration shows where pretrigger and posttrigger data is acquired relative to the trigger event Horizontal delay Horizontal delay A trigger point Start posttrigger a...

Page 161: ...ecified trigger delay time Wait user specified horizontal delay time Wait the user specified number of B trigger events B trigger on events with horizontal delay off B trigger on events with horizonta...

Page 162: ...d See page 3 21 for acquisition setup To trigger on A main only 1 Click Trig on the toolbar and select the A B Seq tab of the Trigger Setup control window 2 Click A Only to turn off sequential trigger...

Page 163: ...he level To set up B triggering 1 To set the B Event trigger click Trig on the toolbar and select the B Event tab of the Trigger Setup control window Or from the menu bar select the B Event Delayed Tr...

Page 164: ...ies User Manual 3 97 Overview Control elements and resources To trigger on a sequence For further assistance 6 Access the online help for more assistance on triggering commands See page 3 209 for info...

Page 165: ...Triggering 3 98 TDS5000 Series User Manual...

Page 166: ...his section discusses H Using the Waveform Display H Customizing the Waveform Display H Using the Zoom Feature Figure 3 29 shows how the display features fit into the overall oscilloscope operation Ac...

Page 167: ...istograms and some readouts 2 The Graticule is the grid marking the display area When Zoom is on depending on the graticule split setting the upper graticule displays unmagnified waveforms and the low...

Page 168: ...able the waveform display Table 3 6 summarizes this process as it applies to the different types of waveforms Table 3 6 Defining and displaying waveforms Waveform To define To display Channel Ch1 Ch4...

Page 169: ...orizontal SCALE RESOLUTION and POSITION knobs Only channel waveforms can be set directly Here are some key points to remember about how horizontal operations relate to the waveform types H Reference w...

Page 170: ...nt to the horizontal reference point This is not the same as the time value from the trigger point to the start of the waveform record unless you set the horizontal reference to 0 See Figure 3 31 Time...

Page 171: ...connected signal to display the waveform The CH button is lighted 3 Adjust the front panel vertical controls to achieve a good display of the waveform Set horizontal display parameters 4 To ensure th...

Page 172: ...ong the horizontal axis until it aligns to the point on the waveform that you want to be stationary on screen Note that if horizontal delay is off the horizontal reference point is the same as the hor...

Page 173: ...f waveforms while leaving more room on the display for automatic readouts and other data H Frame shows only a frame on the oscilloscope display Use with automatic readouts and other screen text when o...

Page 174: ...bar button H Normal displays hues and lightness levels for best overall viewing The color of each channel waveform matches the color of the corresponding front panel vertical SCALE knob H On the Spect...

Page 175: ...INTENSITY knob or the multipurpose knobs to manually adjust the display intensity when AutoBright is Off H When AutoBright is On the intensity of the waveform changes automatically to provide a visibl...

Page 176: ...curve fit between the actual values acquired It assumes all the interpolated points fall along that curve This is particularly useful when acquiring more rounded waveforms such as sine waves Sin x x...

Page 177: ...orm at a time Also the oscilloscope vertically positions only one waveform at a time H When zooming horizontally Zoom expands either the waveform you select all live waveforms or all live and referenc...

Page 178: ...eater detail 4 Release the mouse button and select Zoom from the pop up menu to magnify the highlighted waveform segment The oscilloscope displays the zoomed area on the waveform as magnified in the b...

Page 179: ...ve to the unmagnified waveform As you scale or move the unmagnified waveform relative to the Zoom box the oscilloscope alters the zoomed display accordingly Set up Zoom options 8 Click Setup in the Zo...

Page 180: ...med waveform check the readouts on the appropriate tab Horizontal or Vertical of the Zoom Setup control window Reset Zoom 12 To reset all Zoom settings to their defaults click Reset on the appropriate...

Page 181: ...Displaying Waveforms 3 114 TDS5000 Series User Manual...

Page 182: ...ment Accuracy describes how to run compensation routines and deskew channels to optimize measurement accuracy Taking Automatic Measurements This section describes how to set up the oscilloscope to aut...

Page 183: ...waveform see Localizing a Measurement on page 3 122 Take Measurements on a Frame In FastFrame measurements are taken only on the displayed frame The following topics summarize how automatic measureme...

Page 184: ...ulses See Figure 3 33 High Histogram Low Histogram Low Min Max High Min Max Mid reference Figure 3 33 High Low tracking methods H Min Max uses the highest and lowest values of the waveform record This...

Page 185: ...50 mV High reference Mid reference 0 mV Low reference Low 50 mV 90 10 40 mV 40 mV 50 0 mV Figure 3 34 Reference level calculation methods The High and Low levels from which the reference levels are ca...

Page 186: ...eference or math waveform as the source Click the appropriate waveform button on the Ch Math or Ref Source tab Take automatic measurements 5 Select the tab on the Measurement Setup control window that...

Page 187: ...oggle the display of measurements on the graticule by clicking the Display button Display measurement statistics 9 From any tab on the Measurement Setup control window click Setup Statistics The Measu...

Page 188: ...ee Figure 3 33 H Histogram to select the most common values above or below the midpoint See Figure 3 33 15 To select the reference level units click Units H Absolute to set the units to absolute value...

Page 189: ...apshot measurements click Snapshot Again Phase Delay and Histogram measurements are not included in a snapshot For further assistance 19 Access the online help for more assistance on using measurement...

Page 190: ...he gated area click Measure ment Gating H Cursor to set the gated area to the area between the cursors Use the multipurpose knobs to adjust the cursors on screen H Zoom to set the gated area to the wa...

Page 191: ...e different volts div settings Vertical cursors T Vertical cursors measure horizontal parameters Typically the hori zontal parameters are in time or frequency but depend on the units you select The cu...

Page 192: ...zontal and vertical scale and position and vertical offset paired and split cursors will track a waveform vertically Cursors Ignore the Selected Waveform Each cursor measures its source defined in the...

Page 193: ...yields the cursor position on screen relative to first point You can find the horizontal readout both in the control window and in the readout at the bottom of the screen The following relationships...

Page 194: ...ls in the Cursor Setup control window dragging the cursor into position using the touch screen or mouse or by turning the front panel multipurpose knobs NOTE To make small changes with the multipurpos...

Page 195: ...click Cursors on the toolbar to open the Cursor Type Setup control window Select the cursor type 3 Click a Cursor Type button See Table 3 8 on page 3 124 for an explanation of the cursor types Select...

Page 196: ...etup control window The Cursor Setup control window opens All adjustments that you can make in the Cursor Type Setup control window can also be made in this window 7 Select a cursor Track Mode H Indep...

Page 197: ...To upgrade your oscilloscope purchase TDS5UP Option 2A The histogram source can be any channel math or reference waveform Turning on histograms starts histogram counting and data accumulation A sampl...

Page 198: ...Measuring Waveforms TDS5000 Series User Manual 3 131 Horizontal histogram Histogram measurements Figure 3 36 Horizontal histogram view and measurement data...

Page 199: ...Ch Math or Ref tab and then select the waveform source for the histogram 4 Click either Histogram Mode button to start histogram counting and display the histogram data H Horiz displays a horizontal...

Page 200: ...am data logarithmically Bin counts smaller than the maximum counts are scaled logarithmically Logarithmic scaling provides better visual details for bins with low counts Set histogram limit s 7 Click...

Page 201: ...Measuring Waveforms 3 134 TDS5000 Series User Manual...

Page 202: ...round noise You can obtain a cleaner waveform by subtracting the background noise from your original waveform Or you can integrate a single waveform into an integral math waveform as is shown below So...

Page 203: ...h Waveforms This oscilloscope supports mathematical combination and functional trans formations of waveforms it acquires Figure 3 39 shows this concept Channel waveform Ch2 Math waveform Math1 Diff Ch...

Page 204: ...es Table 3 10 shows the functions available with the standard default math capabilities of this instrument versus the functionality provided when TDS5UP Option 2A Advanced Analysis is installed Note t...

Page 205: ...quisitions mode H Roll Mode Math is not allowed in roll mode until you push STOP H Different Length Sources If you use two waveforms channel and reference waveforms of different lengths the length of...

Page 206: ...input sources that cause the source to clip also clip the waveform data supplied to the math waveform H Changes to the vertical offset setting for a channel source that clip its data also clip the wav...

Page 207: ...nceWaveform MathWaveform ChannelWaveform Ch1 Ch2 Ch3 Ch4 ReferenceWaveform Ref1 Ref2 Ref3 Ref4 MathWaveform Math1 Math2 Math3 Math4 UnaryOperator Invert Derivative Integral Average Max Min Filter Vmag...

Page 208: ...al scale is in seconds The source signal is differentiated over its entire record length therefore the math waveform record length equals that of the source waveform Derivative math waveform Source wa...

Page 209: ...waveform The vertical position and offset will not affect your derivative waveform unless you position the source waveform off of screen so that it is clipped Waveform Integration The advanced math c...

Page 210: ...llowing topics H You should scale and position the source waveform so that it is contained on screen Off screen waveforms may be clipped which will result in errors in the integral waveform H You can...

Page 211: ...ate and click Display to toggle it on Tip If the waveform you select already exists its math expression appears in the window You can still use the waveform by clicking Clear which discards the previo...

Page 212: ...and automatic measurement scalars that you want to use must be available See page page 3 25 for acquisition setup Open the Math Setup control window 2 From the toolbar click the Math button to open th...

Page 213: ...ntry click Clear to remove the entire expression and start over H Use parentheses to group terms in the expression to control execution order for example 5 Ch1 Ch2 Select a function build an expressio...

Page 214: ...to your satisfaction click Apply Apply is available on the Equation Editor and Spectral Setup control windows For further assistance 13 Access the online help for more assistance on using math wavefor...

Page 215: ...hannel waveforms This procedure demonstrates some common operations you can perform on math waveforms Overview To use math waveforms Control elements and resources Prerequisites 1 A math waveform must...

Page 216: ...and using the multipurpose knobs to adjust H You cannot adjust the offset of a math waveform H You cannot adjust horizontal scale position and sample density resolution of math waveforms different le...

Page 217: ...see Taking Cursor Measurements starting on page 3 124 13 Use the multipurpose knobs to position each cursor on the math waveform to measure the feature that interests you 14 Read the results in the c...

Page 218: ...about FFT algorithms H Frequency Domain Controls Use traditional spectrum analyzer controls to set the center frequency span and resolution bandwidth directly H Time Domain Controls The time domain c...

Page 219: ...Position Center dB dBm linear real imaginary degrees radians group delay Duration record length Duration Span Ref level Zero threshold Duration sample rate Window Resolution bandwidth Ref level offset...

Page 220: ...n via sample rate Adjust Duration via record length Adjust Resolution Duration remains constant Figure 3 42 Duration and resolution control effects Using gating controls Gating determines which portio...

Page 221: ...rce waveform Using the Frequency Domain controls The gated region of the source waveform is transformed into a spectral phase or magnitude waveform The horizontal units are always Hz The vertical unit...

Page 222: ...anel Resolution Bandwidth RBW This is the 3 dB down bandwidth of the spectral analyzer frequency response to a sine wave input The resolution bandwidth is affected by two parameters H Different window...

Page 223: ...the center frequency Decrease the center frequency Set center frequency back to 1 and decrease the Span Decrease the Span again Increase resolution by reducing Resolution BW increasing the gate length...

Page 224: ...the Reference Level Offset to a value that is equivalent to 1 mW of power into 50 Therefore if the input units are volts then the value is set to 223 6 mV If the input units are amperes then the value...

Page 225: ...ssion Editor and select the Freq tab Click either the Real or the Imag buttons and enter an expression Click the appropriate channel button and click Apply Using the Phase Controls You can set the ver...

Page 226: ...The phase of any complex spectral points with a magnitude below this threshold is set to zero 35 dB 0 Magnitude vs frequency Suppression threshold Phase vs frequency Figure 3 47 Example of the effects...

Page 227: ...he front panel trigger level control H Adjust the front panel horizontal POSITION control Using windows to filter There are eight different spectral analyzer windows H Rectangular H Hamming H Hanning...

Page 228: ...ate width must be greater than or equal to the period of the start frequency of the span of the spectral analyzer That is there must be at least one cycle of the harmonic being measured within the gat...

Page 229: ...tion in seconds This is also referred to as resolution bandwidth RBW Coherent gain The gain factor normally associated with different window functions is correctly scaled into the magnitude spectrum o...

Page 230: ...Phase Reference This is the position in the time domain gate that is the reference point for phase in the output spectrum That is if a sine wave input has its peak at the zero phase reference positio...

Page 231: ...ique in that the time domain shape of an exponential Gaussian function transforms into a Gaussian exponential shape in the frequency domain This window provides optimal localization in both the time a...

Page 232: ...samples in the gate are not modified before input to the spectral analyzer This window has the narrowest resolution bandwidth of any of the windows but it also has the most spectral leakage and the h...

Page 233: ...his makes it a good choice if you wanted to process the real and imaginary parts of the spectrum off line and inverse transform it back to the time domain Because the data does not taper to zero you c...

Page 234: ...es 3 53 3 54 and 3 55 Choose the one that best allows you to view the signal characteristics you are interested in The Blackman Harris has a low amount of energy leakage compared to the other windows...

Page 235: ...Creating and Using Math Waveforms 3 168 TDS5000 Series User Manual 1 0 Amplitude Time 67 dB side lobe 0 80 dB Frequency bins 40 Figure 3 54 Time and frequency graphs for the Kaiser Bessel window...

Page 236: ...B Frequency bins 40 Figure 3 55 Time and frequency graphs of the Blackman Harris window Flattop2 Window This window has the lowest scallop loss of any of the windows It also has a wider resolution ban...

Page 237: ...forms 3 170 TDS5000 Series User Manual 1 0 Amplitude Time 90 dB side lobe 0 80 dB Frequency bins 40 120 0 dB 0 05 0 1 Scallop loss is 0 0065 dB Frequency bins Figure 3 56 Time and frequency domain gra...

Page 238: ...h is used to capture the impulse response Exact details of how to compute its values were published in the article Impulse response testing lets a single test do the work of thousands by John Pickerd...

Page 239: ...that has time domain components that are asynchronous to the trigger If you turn averaging in the time domain these components may go to zero or produce strange nondeter ministic effects on the resul...

Page 240: ...lay If some of the harmonics are aliased you will see the harmonics decreasing in frequency when they should be increasing or vice versa To Take Cursor Measurements of a Spectral Math Waveform Once yo...

Page 241: ...waveforms are created from live waveforms you cannot create a spectral waveform from math or reference waveforms See page page 3 25 for acquisition setup Open the Math Setup control window 2 From the...

Page 242: ...math waveform you want to define Select the source and display the spectral waveform 4 Select the source for the spectral waveform from the FFT Source drop down list The source can be a live waveform...

Page 243: ...for an overview of the online help system Use this procedure to define a spectral math waveform using the Advanced Analysis option First ensure that the sources you use exist Channel sources should be...

Page 244: ...gnitude to create a magnitude spectral waveform or Phase to create a phase spectral waveform If you want an averaged spectral waveform click Average and click Avgs to set the number of averages See Ap...

Page 245: ...e multipurpose knobs 10 To set the reference level click Reference Level and use the multipurpose knobs or pop up keypad to set the reference level Tip Reference level is the value at the top of the d...

Page 246: ...s 14 To specify whether to unwrap phase in a spectral analysis phase waveform click Unwrap to toggle 15 To set the level in dB that a magnitude in the spectrum must exceed to have its phase computed t...

Page 247: ...eypad to set the frequency range Higher sample rates allow you to set greater frequency spans To set the frequency span to the maximum allowed by the current sample rate click Full 20 To set the cente...

Page 248: ...uration is kept constant at the value selected by the Duration control 23 To adjust the number of seconds over the duration of the acquired waveform record length click Duration and use the multipurpo...

Page 249: ...e graticule area The figure shows the cursor measurement of a frequency magnitude on an FFT The readout reads 0 dB because it is aligned with the 1 VRMS level The other readout reads 24 4 dB indicatin...

Page 250: ...displaying and analyzing a certain signal H Save a series of setups to help automate a procedure through recall of a sequence of saved setups as part of performing the procedure H Export a setup for...

Page 251: ...inappropriate for waveforms currently in your oscilloscope For example if you save a setup that displays a math waveform that is the average of reference waveform 1 when you recall the setup if the r...

Page 252: ...ations the oscilloscope hard disk a floppy disk or third party storage device Overview To save a setup Control elements and resources Prerequisites 1 Power on the oscilloscope 2 Set up the oscilloscop...

Page 253: ...accept the default file name that appears in the File name field type a new name or select an existing name from the file list data in the existing file will be overwritten Select the Auto increment f...

Page 254: ...cilloscope must be powered on and you must have access to a previously saved setup See Power ing On the Oscilloscope on page 1 8 and Saving a Setup on page 3 185 Display the Instrument Setup control w...

Page 255: ...a setup that you want to recall 6 Select your setup file by either clicking an existing name in the file list or clicking in the File name field and typing a new name Tip If you do not have an attache...

Page 256: ...s four reference four channel and four math waveforms If you want more than four reference waveforms you can save additional references to disk for recall later The Reference Setup control window cont...

Page 257: ...s check the references at right H See Powering On the Oscilloscope on page 1 8 H See page 3 25 for acquisition setup H See page 3 49 for trigger setup Open the Reference Setup control window 3 From th...

Page 258: ...to save a series of files without typing in a new name each time For more information see Using Auto Increment File Name on page 3 184 Tip If you do not have an attached keyboard click on Open Keyboa...

Page 259: ...edure page 3 190 to save it to another reference Ref1 Ref4 Overview To recall a waveform Control elements and resources Prerequisites 1 The oscilloscope must be powered up You must have access to a wa...

Page 260: ...ll Select your waveform file by either clicking an existing name in the file list or clicking in the File name field and typing a new name Tip If you do not have an attached keyboard click on Open Key...

Page 261: ...command Overview To clear references Control elements and resources Prerequisites 1 The oscilloscope must be powered on You must have access to a waveform saved by the oscilloscope See Powering On the...

Page 262: ...drop down list and buttons to navigate to the directory which contains the waveform that you want to delete 6 Select your waveform file by either clicking an existing name in the file list or clicking...

Page 263: ...A Waveform on page 3 190 instead of exporting it H You may also choose to copy a waveform and paste it directly into an application such as Microsoft Word or Excel If so select your waveform and then...

Page 264: ...to be exported exists that is your source must be a channel an active math waveform an active reference and so forth H See Powering On theOscilloscope on page 1 8 H See page 3 25 for acquisition setu...

Page 265: ...formats 11 Select a valid waveform from the Source list 12 Select the Include waveform scale factors check box if you want to include waveform details like header information record length sample inte...

Page 266: ...e in drop down list and buttons to navigate to the directory in which to save your data 22 Select the file type in the Save as type drop down list to force the file listing to only include these types...

Page 267: ...m on page 3 190 Import the waveform data 3 In Excel select Open from the File menu Use the window that pops up to navigate to the directory containing the file 4 In the dialog that displays make the s...

Page 268: ...r Lines in the Standards Types tab or Smooth lines in the Custom Types tab Finish the chart 8 Click Next to step through the next two steps accepting the defaults setting at each step Click the Finish...

Page 269: ...o be copied exists that is your source must be a channel an active math waveform an active reference and so on H See Powering On the Oscilloscope on page 1 8 H See page 3 25 for acquisition setup H Se...

Page 270: ...t 11 Select the Include waveform scale factors check box if you want to include waveform details like header information record length sample interval trigger point information and so on If you only w...

Page 271: ...splayed Measurements to copy all measure ments that are displayed on screen or Measurements Snapshot to copy the current snapshot data If there is no valid snapshot data the default snapshot values ar...

Page 272: ...g box opens The settings in the dialog box are dependent on the type of printer connected to the oscilloscope To set the format of the printed page select the File menu Page Setup command The oscillos...

Page 273: ...ion or centimeters division Select a value for the Length these values change according to the choice of Units Change the Summary Waveform selection if you want to add a screen shot to the Beginning E...

Page 274: ...e Select for Export menu For additional information see Exporting and Copying Waveforms on page 3 196 You can display the current date and time on screen so that they appear on hard copies you print T...

Page 275: ...DS5000 Series User Manual For information on connecting the oscilloscope to a network to enable printing file sharing Internet access and other communication functions see Connecting to a Network on p...

Page 276: ...he following when using online help H Use online help when you want to minimize interruption to your work flow Help Topics are there when you need to probe more deeply into feature operation H Use the...

Page 277: ...Help button Click the button to open the help system with an overview of the control window that is currently displayed You can also press the F1 key on an attached keyboard to access this type of hel...

Page 278: ...You can search for help using methods that most users of PCs are familiar with From the menu bar select Help and then select Contents and Index 5 From the online help finder choose from the three tabs...

Page 279: ...tabs of the online finder you may want to enable full text search From the application menu bar select Help and then select Contents and Index See right 8 From the online help finder see below choose...

Page 280: ...A 20 H The oscilloscope must be powered from a source that meets the specifica tions listed in Table A 8 on page A 18 H The oscilloscope must have been operating continuously for at least 20 minutes w...

Page 281: ...e optional acquisition features such as equivalent time or roll mode Horizontal Delay Use delay when you want to acquire a signal at a significant time interval after the trigger point Toggle delay on...

Page 282: ...in on a waveform to see the fine details Both vertical and horizontal zoom functions are available Cursors Use cursors to take simple voltage time and frequency measurements Automatic Measurements Cho...

Page 283: ...rols are provided for each channel The same functions are also available through the screen interface Data Storage and I O The oscilloscope has a removable hard disk drive a floppy disk drive and a CD...

Page 284: ...scale and coupling settings Deskew range typical 75 ns Channel to channel crosstalk 100 1 at 100 MHz and 30 1 at the rated bandwidth for any two channels with the same scale and coupling settings Dig...

Page 285: ...ALE range Rise time 1 mV div to 1 99 mV div 2 29 ns 2 mV div to 4 98 mV div 1 33 ns 5 mV div to 1 V div 800 ps TDS5104 SCALE range Rise time 1 mV div to 1 99 mV div 2 29 ns 2 mV div to 1 V div 300 ps...

Page 286: ...10 V TDS5104 50 coupling SCALE range Offset range 1 mV div to 50 mV div 0 5 V 50 5 mV div to 99 5 mV div 0 25 V 100 mV div to 500 mV div 5 V 505 mV div to 1 V div 2 5 V Offset accuracy SCALE range Off...

Page 287: ...orm point and High Low Max and Min measurements 1 5 1 0 net offset offset range reading net offset offset accuracy 0 13 div V div setting 0 6 mV TDS 5104 with 2 mV div 3 98 mV div 1 5 3 0 net offset o...

Page 288: ...2 mV div 3 98 mV div 1 5 3 0 net offset offset range reading net offset offset accuracy 0 06 div V div Delta voltage measurement between any two points acquired under the same setup and ambient condi...

Page 289: ...nd input conditions Effective bits TDS5052 TDS5054 1 MHz 9 2 div 5 GS s sample rate Sample ac quisition mode 6 8 bits 1 MHz 9 2 div 10 MS s sample rate HiRes acquisi tion mode 9 1 bits 500 MHz 6 5 div...

Page 290: ...s 1 000 000 points 2 channels 2 000 000 points 1 channel Option 2M installed 2 000 000 points 3 or 4 channels 4 000 000 points 2 channels 8 000 000 points 1 channel Real time sample rate range Number...

Page 291: ...l amplitude 5 div reference level set at 50 interpolation set to sin x x volts division set to 5 mV div with displayed risetime sample interval ratio between 1 4 and 4 where sample interval 1 real tim...

Page 292: ...pical All sources for vertical scale settings 10 mV div and 1 V div Trigger coupling Sensitivity NOISE REJ 3 the DC coupled limits AC Same as DC coupled limits for frequencies 60 Hz attenuates signals...

Page 293: ...signals 30 Hz Trigger position error typical Edge trigger DC coupling for signals having a slew rate at the trigger point of 0 5 div ns Acquisition mode Error Sample Average 1 displayed point 1ns Env...

Page 294: ...5 of upper limit setting Timeout type Minimum timeout time 1 ns 2 ns 5 of timeout set ting Transition type Minimum transition time 600 ps 8 5 ns 5 of transition time setting Pattern type typical Mini...

Page 295: ...ings 2 ns to 200 ns Advanced trigger timer accuracy For Glitch Timeout or Width types Time range Accuracy 1 ns to 500 ns 20 of setting 0 5 ns 520 ns to 1 s 0 01 of setting 100 ns Trigger holdoff range...

Page 296: ...el 3 input 20 mV div 20 into a 1 M load 10 mV div 20 into a 50 load Analog Signal Output bandwidth typical 100 MHz into a 50 load Auxiliary Output levels Rear panel BNC connector provides a TTL compat...

Page 297: ...t be off to make connection Mouse port PS 2 compatible oscilloscope power must be off to make connection LAN port RJ 45 connector supports 10 base T and 100 base T Serial port DB 9 COM1 port uses NS16...

Page 298: ...shipment Dimensions Benchtop configuration 11 2 in 284 5 mm height 12 8 in 325 1 mm with feet extended 17 6 in 447 mm width 11 35 in 288 3 mm depth Rackmount configuration Option 1R 10 5 in 267 mm hei...

Page 299: ...t derated to 30 relative humidity at 45 C Nonoperating With no diskette in floppy disk drive 5 to 90 relative humidity with a maximum wet bulb temperature of 29 C at or below 60 C noncondens ing Upper...

Page 300: ...Emissions 1 If interconnect cables are used they must be low EMI shielded cables such as the following Tektronix part numbers or their equivalents 012 0991 01 012 0991 02 or 012 0991 03 GPIB Cable 012...

Page 301: ...stallation categories are CAT III Distribution level mains usually permanently connected Equipment at this level is typically in a fixed industrial location CAT II Local level mains wall sockets Equip...

Page 302: ...measurement The time between the MidRef crossings of two different traces or the gated region of the traces Fall Time Timing measurement Time taken for the falling edge of the first pulse in the wavef...

Page 303: ...lete signal cycle to happen in the waveform or gated region The reciprocal of frequency Measured in seconds Positive Duty Cycle Timing measurement of the first cycle in the waveform or gated region Th...

Page 304: ...stograms display the time of the rightmost nonzero bin minus the time of the leftmost nonzero bin Max Min Max Displays the maximum voltage or time Min Displays the minimum voltage or time Mean 1 StdDe...

Page 305: ...Appendix B Automatic Measurements Supported B 4 TDS5000 Series User Manual...

Page 306: ...aning agents that might damage the plastics used in this oscilloscope Use only deionized water when cleaning the front panel buttons Use a 75 isopropyl alcohol solution as a cleaner and rinse with dei...

Page 307: ...ble from Kimberly Clark Corporation CAUTION To prevent getting moisture inside the oscilloscope during external cleaning use only enough liquid to dampen the cloth or applicator If the display is very...

Page 308: ...ale Opens the Waveform Label control window used to attach a label to the waveform Opens the Reference Setup control window used to create and control reference waveforms Opens the Reference Setup con...

Page 309: ...f you have not saved any setups Minimize Minimizes the oscilloscope application displaying the Windows desktop Shutdown Shuts down the oscilloscope Edit Commands Table D 2 lists the commands available...

Page 310: ...trol window used to set the vertical offset and scale of a waveform Termination Opens the Termination control window used to select input termination for a channel Invert Opens the Channel Invert cont...

Page 311: ...tically enters roll mode at slower horizontal scale settings Equivalent Time Auto Toggles equivalent time on and off When on the oscilloscope automatically uses equivalent time sampling when the sampl...

Page 312: ...e Timeout Setup Opens the Trigger Setup control window for the Timeout trigger type Transition Setup Opens the Trigger Setup control window for the Transition trigger type Setup Hold Setup Opens the T...

Page 313: ...up control window used to change the appearance of objects on the display Colors Opens the Colors tab of the Display Setup control window used to set the color of screen objects Display Style Dots Vec...

Page 314: ...m the Measure Measurement menu Table D 8 Measure menu commands Submenu Command Function Measurement Setup Opens the Measurement Setup control window used to set up the oscilloscope for automatic measu...

Page 315: ...nting Only available if you have Option 2A Advanced Analysis installed Histogram Measure ments Optional Value Count Hits in Box Peak Hits Median Maximum Minimum Peak to Peak Mean Standard Deviation Me...

Page 316: ...tical scale Label Opens the Waveform Label control window used to attach a label to the waveform Ch1 Ch2 Creates a predefined math waveform Ch3 Ch4 Creates a predefined math waveform Ch1 Ch2 Creates a...

Page 317: ...oscope diagnostics and view the diagnostic status and error log Deassign Multipurpose Knobs Deassigns the multipurpose knobs from their current function User Preferences Opens the User Preferences con...

Page 318: ...able D 12 Help menu commands Cont Submenu Function Command Customer Feedback Describes how to supply customer feedback About Tek Scope Shows the oscilloscope version number serial number instrument ID...

Page 319: ...Appendix D Menu Bar Commands D 12 TDS5000 Series User Manual...

Page 320: ...uisites 1 The oscilloscope must be powered on Allow a 20 minute warm up Remove all input signals See Powering on the Oscilloscope on page 1 8 Display the calibration instructions 2 From the menu bar s...

Page 321: ...easurement Accuracy E 2 TDS5000 Series User Manual Overview Control elements and resources To compensate the oscilloscope Cont For further assistance 5 Access the online help See page 3 209 to learn a...

Page 322: ...onnection by firmly twisting the tip onto the probe Use this procedure to optimize gain and offset accuracy at the probe tip for many types of probes Overview To calibrate probes Control elements and...

Page 323: ...tton to open the Vertical Setup control window 5 Click the Probe Cal button to open the Probe Calibration control window 6 Select the oscilloscope channel to which the probe is attached 7 Click Clear...

Page 324: ...compensation 2 Connect the probe to oscilloscope Channel 1 and the probe tip to the probe compensation terminals see Connecting Probes for Calibration on page E 3 3 Connect one probe to the fixture 4...

Page 325: ...s of differing lengths The oscilloscope applies deskew values after it completes each acquisition therefore the deskew values do not affect logic triggering Also deskew has no affect on XY and XYZ dis...

Page 326: ...e differences in the channel delays are clearly visible 8 Adjust horizontal POSITION again so that the first rising edge is exactly at center screen The fastest probe is connected to this channel The...

Page 327: ...Appendix E Optimizing Measurement Accuracy E 8 TDS5000 Series User Manual...

Page 328: ...g of high frequencies or fast transitions A condition that occurs when a oscilloscope digitizes at an effective sampling rate that is too slow to reproduce the input signal The waveform displayed on t...

Page 329: ...g apparent noise Bandwidth The highest frequency signal the oscilloscope can acquire with no more than 3 dB 707 attenuation of the original reference signal Burst width A timing measurement of the dur...

Page 330: ...ger data Digitizing The process of converting a continuous analog signal such as a waveform to a set of discrete numbers representing the amplitude of the signal at specific points in time Digitizing...

Page 331: ...that lets you limit automated measurements to a specified portion of the waveform You define the area of interest using the vertical cursors Glitch positive trigger Triggering occurs if the oscillosco...

Page 332: ...arameters of a waveform The oscilloscope displays the value of the active moveable cursor with respect to ground and the voltage value between the bars Horizontal reference point The point about which...

Page 333: ...he combinatorial logic condition of channels 1 2 3 and 4 Allowable conditions are AND OR NAND and NOR Low The value used as 0 in automated measurements whenever High Ref Mid Ref and Low Ref values are...

Page 334: ...w Min Amplitude 100 Negative width A timing measurement of the distance time between two amplitude points falling edge MidRef default 50 and rising edge MidRef default 50 on a negative pulse Normal tr...

Page 335: ...iable Infinite and Off Phase A timing measurement between two waveforms of the amount one leads or lags the other in time Phase is expressed in degrees where one complete cycle comprises 360_ of one o...

Page 336: ...cope used to store waveforms or settings You can use that waveform data later for processing The oscilloscope saves the data even when the oscilloscope is turned off or unplugged Reference waveforms W...

Page 337: ...pe The direction at a point on a waveform You can calculate the direction by computing the sign of the ratio of change in the vertical quantity Y to the change in the horizontal quantity The two value...

Page 338: ...e time value between the bars Waveform The shape or form visible representation of a signal Waveform interval The time interval between record points as displayed XY format A display format that compa...

Page 339: ...Glossary Glossary 12 TDS5000 Series User Manual...

Page 340: ...3 68 3 73 Window 3 87 A B Seq tab 3 96 A Then B 3 95 3 96 B trigger level 3 96 Trig Event 3 96 A B Trigger Sequence D 5 Absolute Reference 3 117 AC coupling 3 6 3 9 3 56 Glossary 1 AC line voltage tri...

Page 341: ...y 1 Appearance command D 6 application using an exported waveform in 3 200 applications 1 11 Area B 1 D 7 Glossary 1 ARM status light 3 57 Attenuation Glossary 1 Attenuation command D 3 Attenuation co...

Page 342: ...3 5 connecting peripherals 1 6 connecting to a network 1 12 connectivity tools 2 2 connectors front panel 2 3 rear panel 2 7 side panel 2 7 Contacting Tektronix xv Contents and Index D 10 Control win...

Page 343: ...205 Printing from the Menu Bar 3 205 Printing Waveforms 3 205 Recall Setup From a File 3 188 Recalling a Setup 3 187 Recalling a Waveform 3 192 Reference Setup control window 3 190 3 192 3 194 Remote...

Page 344: ...etup control window D 6 Display Setup control window Appearance tab 3 106 3 107 3 108 Colors tab 3 107 3 108 Objects tab 3 106 3 108 3 109 Screen Text tab 3 107 Display specifications A 16 Display Sta...

Page 345: ...nt time sampling 3 26 3 33 random defined Glossary 4 random 3 34 Equivalent time sampling 3 43 erasing all references and setups 3 194 Error log D 10 exiting the application 1 12 Export command D 2 ex...

Page 346: ...lay Cleaning C 1 Flattop2 window 3 160 3 162 3 169 Force Trigger button 3 61 Frame graticule style 3 106 frame Horizontal menu 3 45 Frame graticule command D 6 Frame Count Horizontal menu 3 45 Frame L...

Page 347: ...ting 3 132 Histogram Measurements D 8 histograms 3 43 Hits in Box B 2 D 8 Holdoff command D 5 holdoff Default 3 59 for video triggers 3 90 Time 3 59 trigger 3 59 Holdoff control window D 5 Holdoff tri...

Page 348: ...h of 3 143 integrated thermal printer 3 205 lever 3 207 printing to 3 206 intensified samples 3 107 D 6 Intensity Glossary 5 intensity waveform 3 108 INTENSITY knob 3 40 3 108 interleaving channels 3...

Page 349: ...Label D 8 D 9 Magnitude Spectrum D 8 D 9 Math Setup D 8 D 9 Phase Spectrum D 9 Position Scale D 8 D 9 Set Math Averages D 9 Spectral Controls D 9 Spectral Setup D 9 Math menu command summary Advanced...

Page 350: ...um D 7 D 8 Mean D 7 D 8 Mean 1 StdDev D 8 Mean 2 StdDev D 8 Mean 3 StdDev D 8 Measurement Setup D 7 Median D 8 Minimum D 7 D 8 More D 7 Neg Duty Cycle D 7 Neg Overshoot D 7 Negative Width D 7 Peak Hit...

Page 351: ...ulation methods 3 118 Relative Reference 3 117 removing measurements 3 120 selecting a cursor type 3 128 selecting measurement parameters 3 116 selecting the cursor sources 3 128 selecting a source wa...

Page 352: ...ing data 3 185 P page preview 3 205 Page Setup D 1 Page Setup dialog box 3 205 3 206 D 1 Paired cursors command D 7 paired cursors 3 124 Pattern trigger 3 63 Input Threshold 3 79 logic 3 79 Pattern Ty...

Page 353: ...ssary 9 Q Quick Select D 5 quitting the application 1 12 R radians using as phase units 3 179 readout trigger 3 57 3 62 READY status light 3 57 Real time sampling 3 26 3 32 Real time sampling Glossary...

Page 354: ...185 saving a waveform 3 189 saving a waveform to a reference 3 190 scale horizontal D 4 vertical D 3 SCALE knob 3 102 3 104 scallop loss 3 161 3 162 Screen saver 3 108 Screen text Glossary 10 Screen T...

Page 355: ...ral magnitude data displaying 3 151 Spectral Math 3 dB BW in bins 3 162 acquisition mode 3 172 aliasing 3 172 averaging 3 172 Blackman Harris 3 160 3 162 Blackman Harris window 3 167 center frequency...

Page 356: ...d frequency graphs of the Hamming window 3 166 unwrapping phase 3 179 Using Spectral Math Controls 3 152 Using the Frequency Domain controls 3 154 Using the gate controls 3 153 Using the magnitude con...

Page 357: ...10 Timeout Glossary 10 Trigger sources AC Line Voltage 3 50 auxiliary input 3 50 3 55 Input channel 3 50 input channels 3 55 Line 3 55 Trigger trigger level marker 3 108 Trigger After Time 3 95 defin...

Page 358: ...ting the trigger level 3 55 Setting threshold levels 3 72 Setting threshold voltages 3 79 Setting up B triggering 3 96 Setting up Triggers 3 54 Single sequence trigger 3 61 Slope and Level 3 53 SLOPE...

Page 359: ...l Setup D 3 Zoom Controls D 3 Zoom Graticule D 3 Zoom Setup D 3 vertical offset acquisition window position 3 17 and math waveforms 3 139 3 142 3 143 setting 3 14 Vertical Offset control window D 3 ve...

Page 360: ...nctions 3 151 selecting 3 161 Window Setup D 5 Window trigger 3 67 defining limits 3 88 logic inputs 3 88 setting up 3 87 Source 3 87 threshold levels 3 87 Trigger When 3 88 Windows operating system b...

Page 361: ...Index Index 22 TDS5000 Series User Manual...

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