MDO3000 Series Mixed Domain Oscilloscopes User Manual
Contents
1. d Pan S00MS s amp T Sine 499 57kHe op 1 poins sm ds i ED Freauency 499 SkH2 i __ 499 51 5k 496 2 502 8k _ 781 8 _ J 15 59 06 Edge Search events found 10 3249 021 Cn E E at sine N TYY 1 If visible the output is on AFG label 1 0000 pp 57 kH Waveform type e g Sine Additive Noise icon Frequency m Se Be PN Amplitude See page 183 Use the Arbitrary Function Generator MDO3000 Series Oscilloscopes User Manual Get Acquainted with the Instrument Identifying Items in the Digital Voltmeter Display Tek Run Ta ACRMS 2072m fhe n N fem A Avg 187 8mV UL om Oo a e J 4 Min 128 Im P Max 253 0my v 1e 8my Freg 3 0000 D 1 Measurement type AC DC RMS DC AC RMS or Frequency 2 Numerical value of the current measurement 3 Graphic min max value five second rolling range The number on the left side of the graphic s linear scale is the minimum value of the range e g 0 000 V The number on the right side of the graphic s linear scale is the maximum value of the range e g 400 0 mV The gray bar shows the five second rolling average of measurements The inverted triangle shows the location on the scale of the current measurement value 4 Minimum measurement value recorded since you powered on the instrument or since you last pushed the Reset DVM Statistics2. Switching to Envelope or Average acquisition mode using digital channels using math waveforms turning on a bus or switching to Normal trigger will disable Roll mode Roll mode is disabled when you set the horizontal scale to 40 ms per division or faster A ogee Run Stop WE Push Run Stop to halt Roll mode abs Bethe 5 e s cy ae ae a a cae O Y BELIA ar 0968 026 MDO3000 Series Oscilloscopes User Manual Act on Event Tell the oscilloscope to perform a defined action after a defined event has occurred The event can be a trigger or a certain number of acquisitions The action can be to Push Test Stop acquisitions Save a waveform or a screen image to a file Print Send a pulse out the AUX OUT port Generate a remote interface SRQ send an e mail notification Display a message on the oscilloscope display Application Event Acquisition Push Application on the lower menu Turn Multipurpose a to select Act on Event Multipurpose 1785 039 Push Event on the lower menu This brings up the event type side menu Select the desired event type MDO3000 Series Oscilloscopes User Manual Acquire the Signal Action Repeat Off 65 Acquire the Signal Event Type Acquisi tions a 10 5 Push Actions on the lower menu This brings up the Actions side menu Use the menu to select an action to occur on the event 6 Select the acti
3. ALLIS Delay time gt Expansion point With Delay set to On turn the Horizontal Position knob counterclockwise to increase the delay The trigger point will move to the left and ultimately outside of the acquired waveform Then you can adjust the Horizontal Scale knob to acquire more detail around the area of interest at the center of the screen When this delay is on the trigger point separates from the horizontal expansion point The horizontal expansion point Stays at the center of the screen The trigger point can move off the screen When this happens the trigger marker turns to point in the direction of the trigger point Use the delay feature when you want to acquire waveform detail that is separated from the trigger event by a significant interval of time For example you can trigger on a sync pulse that occurs once every 10 ms and then look at high speed signal characteristics that occur 6 ms after the sync pulse When the delay feature is set to Off the expansion point is tied to the trigger point so that scale changes are centered around the trigger point Using Roll Mode 64 Roll mode gives a display similar to a strip chart recorder for low frequency signals Roll mode lets you see acquired data points without waiting for the acquisition of a complete waveform record Roll mode is enabled when the trigger mode is auto and the horizontal scale is set to 40 ms div or slower Quick Tips
4. 2 F z pi 9 x Al ii i oS 9 I s CE cocok ai IL m Oce om WE o 59 Acquire the Signal 2 Push a lower menu button to create a label Label such as for channel 1 or B1 Preset of labels abel 3 Push Choose Preset Label to view a list Choose 4 Turn Multipurpose b to scroll through the list to find a suitable label You can edit the label after you insert it if necessary Multipurpose 1785 160 Preset 5 Push Insert Preset Label to add the label Insert Label If you are using a USB keyboard use the o O g arrow keys to position the insertion point O coco Do oo o and edit the inserted label or type ina new poooo0o0000000 O00 0000 CODOOOOOOOOOOO U OAO Keyboard to Your Osciloscope FE y EEH eypoard tO YOUr USCIIOSCOPE y p DCL ID aa aA 2121 220 6 If you do not have a USB keyboard connected push the side and lower menu arrow keys to position the insertion point le 56 MDO3000 Series Oscilloscopes User Manual Acquire the Signal 7 Turn Multipurpose a to scroll through the list of letters numbers and other characters to find the character in the name that you Multipurpose want to enter 1785 039 ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnoparstuvwxyz 0123456789_ amp lt gt 8 Push Select or Enter Character to let the oscilloscope know that you have picke
5. Acquiring untriggered data 6 The security icon indicates when the I O ports are disabled 7 The cursor readout shows time amplitude and delta A values for each cursor For FFT measurements it shows frequency and magnitude For serial and parallel buses the readout shows the decoded values a 400 0ns 152 0m b 2 800yus 240 0m AZ 400 ps A392 0m dvifdt 163 3kV s 8 The trigger level icon shows the trigger level on the waveform The icon color corresponds to the trigger source color 1785 143 9 The trigger readout shows the trigger source slope and level The trigger readouts for other trigger types show other parameters ap 12 0myY 10 The top line of the record length sampling rate readout shows the sampling rate You can adjust it with the Horizontal Scale knob The bottom line shows the record length You can adjust it by pushing Acquire and Record Length on the lower menu MDO3000 Series Oscilloscopes User Manual Get Acquainted with the Instrument US 10k paints 11 The horizontal position scale readout shows on the top line the horizontal scale adjust with the Horizontal Scale knob With Delay Mode on the bottom line shows the time from the T symbol to the expansion point icon adjust with the Horizontal Position knob Use horizontal position to insert added delay between when the trigger occurs and when you actually capture the data Insert a negative time to capture more pretrig
6. Multipurpose 1785 160 128 MDO3000 Series Oscilloscopes User Manual 5 Push OK Snapshot All Measurements Analyze Waveform or Trace Data OK Snapshot All Mea surements 6 View results Snapshot on 1 Period 312 2us Freq Width 103 7us Width Burst W 936 5us Fall Rise 1 452us Over Duty 33 23 Duty Over 7 143 Over High 9 200 V Low Max 10 40 V Min Ampl 16 80 V Pk Pk Mean 5 396 V CycleMean RMS 7 169 V CycleRMS Area 21 58 mVs CycleArea Edges d Edges Pulses 2 Pulses Reference Levels Reference levels determine how time related measurements are taken For example they are used in calculating rise and fall times 1 Push Measure 2 Push More as many times as needed to select Reference Levels from the resulting pop up menu MDO3000 Series Oscilloscopes User Manual 3 203 kHz 208 5us 1 144us 14 286 66 77 7 143 7 600 V 8 800 V 19 20 V 5 396 V 8 206 V 654 6uVs 0 2 Measure Add Mea surement ar 0968 048 Remove Indicators DVM Wave Measure orm His ment tograms 129 Analyze Waveform or Trace Data 3 Set the levels using the side menu oe evels Set Levels Use High and Low reference to calculate High Ref rise and fall times a 90 0 Use Mid reference primarily for measurements between edges such as pulse widths 0 0 Set to Defaults Taking Automatic Measurements
7. You can also disable the Autoset function To disable or enable the Autoset function 1 Push and hold Autoset 3249 009 2 Push and hold Menu Off p 0968 012 3 Release Menu Off and then release Autoset 58 MDO3000 Series Oscilloscopes User Manual 4 Select the desired setting using the side menu Quick Tips E to 0 V Acquire the Signal Autoset Enabled Autoset Disabled To position the waveform appropriately Autoset may change the vertical position Autoset always sets vertical offset If you use Autoset when no channels are displayed the instrument turns on channel 1 and scales it If you use Autoset and the oscilloscope detects a video signal the oscilloscope automatically sets the trigger type to video and makes other adjustments to display a stable video signal Acquisition Concepts Before a signal can be displayed it must pass through the input channel where it is scaled and digitized Each channel has a dedicated input amplifier and digitizer Each channel produces a stream of digital data from which the instrument extracts waveform records Sampling Process Acquisition is the process of sampling an analog signal converting it into digital data and assembling it into a waveform record which is then stored in acquisition memory Real Time Sampling MDO3000 Series oscilloscopes use real time sampling In real time sampling the instrument digitizes all of the points it
8. acquisitions enabling the capture and display of transient events such as glitches and runt pulses Fast acquisition mode can also display waveform phenomena at an intensity that reflects their 60 rate of occurrence To use FastAcd 1 Push Acquire Ail I Sample interval First sampled and digitized point in record Th Trigger point Expansion point Ga ec ee J Horizontal Horizontal acquisition position window 1785 109 Ce m m Oce om Ia 0968 025 MDO3000 Series Oscilloscopes User Manual Acquire the Signal 2 Push FastAcq FastACq 3 Toggle the FastAcq side menu button to Fast Acq select On Off 4 Push Waveform Palette Waveform Palette a Temper ature 5 Turn the Multipurpose a knob to select the desired display palette The display palette lets you enhance the visibility Multipurpose of events This choice uses intensity grading to indicate how often rare transients occur relative to normal signals The choices are Temperature Spectral Normal and Inverted Temperature uses color grading to indicate frequency of occurrence with hot colors like red yellow indicating frequently occurring events and colder colors like blue green indicating rarely occurring events Spectral uses color grading to indicate frequency of occurrence with colder colors like blue indicating frequently occurring events and hot colors like red indicating rare
9. channel See page 55 Labeling Channels and Buses 7 Push More to access a pop up menu of additional features These are described below 8 Select Fine Scale to enable Multipurpose Fine Scale a to make fine vertical scale adjustments Offset Position Probe Setup Deskew 9 Select Offset to enable Multipurpose a to make vertical offset adjustments Push Set to 0 V on the side menu to set the vertical offset to 0 V For more information on offset see Quick Tips See page 110 Quick Tips 108 MDO3000 Series Oscilloscopes User Manual 10 Select Probe Setup to define probe parameters On the side menu m Select Voltage or Current to set the probe type for probes that do not have a TekProbe Level 1 TekProbe Il requires a TPA BNC adapter or TekVPI interface m For probes that do not have a Tek interface when Probe Type is set to Voltage turn Multipurpose a to set Attenuation to match the probe m For probes that do not have a Tek interface when Probe Type is set to Current turn Multipurpose a to set the Amps Volts ratio Attenuation to match the probe m lf you are measuring current by probing the voltage drop across a resistor set Measure Current to Yes Push AIN ratio on the side menu and turn Multipurpose a to set the Amps Volts or Volts Amp ratio of your setup For example if you are measuring the drop across a 2 Q resistor set the V A ratio to 2 m For some types of probes yo
10. cross to be a valid peak If the threshold is lower more peaks will tend to qualify to have markers If the threshold is higher fewer peaks tend to qualify to have markers The excursion is how far a signal needs to fall in amplitude between marked peaks to be another valid peak If the excursion is low more peaks will tend to qualify to have associated markers If the excursion is high fewer peaks will tend to qualify to have associated markers MDO3000 Series Oscilloscopes User Manual Analyze Waveform or Trace Data Each automatic marker has a readout associated with it These can be absolute or delta readouts An absolute marker readout shows the actual frequency and amplitude of the associated marker A delta marker readout shows the frequency and amplitude differences from the Reference Marker The Reference Marker s readout indicates absolute frequency and amplitude regardless of the readout type Manual Markers Two manual markers are provided for you to measure non peak areas of the spectrum and to measure Noise Density and Phase Noise When the manual markers are turned on the Reference Marker is no longer automatically attached to the highest amplitude peak It is now assigned to the Multipurpose a knob and can be moved to any location you desire This enables easy measurement of any part of the spectrum as well as delta measurements to any part of the spectrum This also lets you measure non peak spectral content of interest The
11. displaying unique signal anomalies such as glitches m The XY Display mode graphs the data in fixed pairs of waveforms against one another MDO3000 Series Oscilloscopes User Manual Display Waveform or Trace Data Setting the Graticule Style 1 To set the graticule style push Utility N 3249 012 n 7 2 Push Utility Page 3 Turn Multipurpose a and select Display 4 Push Graticule on the lower menu MDO3000 Series Oscilloscopes User Manual 103 Display Waveform or Trace Data 5 Select the desired style on the side menu The Frame graticule provides a clean screen on which you can most easily read automatic measurement results and other screen text The Full graticule can help you make cursor measurements on hard copies The Grid Solid and Cross Hair graticules provide compromises between Frame and Full Quick Tips Display Graticule x T 2910 067 m You can display IRE and mV graticules To do this set the trigger type to video and set the vertical scale to 114 mV division The 114 mV division selection is available in the fine vertical scale settings for the channel when you set the trigger type to video The oscilloscope will automatically display the IRE graticule for NTSC signals and the mV graticule for other video signals PAL SECAM HDTV and custom Setting the LCD Backlight Brightness and Dimming Settings 1 Push Utility 2 Push Utility Page 3 Turn Mult
12. factor in the oscilloscope vertical menu for the channel to match the probe 3 Push Default Setup 4 Push Autoset 54 Default 3249 008 3249 009 e RANA am WWE TER FE N ae a m OSH LOC 9 MDO3000 Series Oscilloscopes User Manual 5 Push the desired channel button Then adjust the vertical position and scale 6 Adjust the horizontal position and scale The horizontal position determines the number of pretrigger and posttrigger samples The horizontal scale determines the size of the acquisition window relative to the waveform You can scale the window to contain a waveform edge a cycle several cycles or thousands of cycles Quick Tip Acquire the Signal 0968 052 m Use the zoom feature to see multiple cycles of your signal in the upper part and a single cycle in the lower part of the display See page 147 Using Wave Inspector to Manage Long Record Length Waveforms Labeling Channels and Buses You can add a label to the channels and buses shown on the display for easy identification The label is placed on the waveform baseline indicator in the left side of the screen The label can have up to 32 characters To label a channel push a channel input button for an analog channel 1 Push a front panel button for an input channel or a bus MDO3000 Series Oscilloscopes User Manual BILL E 5 CH a Si et Ai 1
13. in the Frequency Domain To take an automatic measurement in the frequency domain 1 If the instrument is in the time domain push RF 2 Push Measure Measure Measure ment 3 Push Select Measurement 130 MDO3000 Series Oscilloscopes User Manual 4 Choose the measurement of interest from the side menu Channel power The total power within the bandwidth defined by the Channel Width Adjacent channel power ratio The power in the main channel and the ratio of channel power to main power for the upper and lower halves of each adjacent channel Occupied bandwidth The bandwidth that contains the specified of power within the analysis bandwidth Analyze Waveform or Trace Data Select Measure ment None Channel Power Adjacent Channel Power Ratio Occupied Bandwidth As you select each frequency measurement on screen help will appear to explain the purpose of that measurement A Configure item will appear on the lower menu After you press Configure and set the measurement parameters in the resulting side menu the oscilloscope will automatically set the soan When the RF measurements are on the Auto detection method will set all frequency domain traces to the Average detection method This provides optimal measurement accuracy Taking Digital Voltmeter Measurements Use the digital voltmeter to measure the potential difference between two points in an electrical circuit 1 Push chan
14. in the MDO3000 Series Oscilloscopes Technical Reference MDO3000 Series Oscilloscopes User Manual Analyze Waveform or Trace Data Analyze Waveform or Trace Data After having properly set up the acquisition triggering and display of your desired waveform or trace you can analyze the results Select from features such as cursors automatic measurements statistics waveform histograms math and FFT Using Markers in the Frequency Domain 1 Push Markers This brings up the Markers side menu Asa S oa am 2 Push Peak Markers and turn Multipurpose oo a to select how many peaks to label on the 5 a display of NOTE This ts the maximum number of peaks that will be marked If there are more peaks that meet the threshold and excursion criteria than the specified number of Peak Markers identified in this control then only the specified number of highest amplitude peaks will be marked 3 Push Y Y To Center to set the center frequency to the Topeng frequency indicated by the Reference Marker The Reference Marker is automatically placed on the highest amplitude peak 4 Push Threshold and turn Multipurpose Threshold a to define the threshold of the peak markers Turn Multipurpose b to define Excursion their excursion value 30 0 dB 5 Push Manual Markers to activate manual ae arkers markers Use manual markers to measure non peak areas of interest in the spectrum On Ai 6 Push Readout to choose b
15. menu item 5 Maximum measurement value recorded since you powered on the instrument or since you last pushed the Reset DVM Statistics menu item 6 Average of all measurement values recorded since you powered on the instrument or since you last pushed the Reset DVM Statistics menu item 7 Frequency NOTE An Over bandwidth message appears for voltage measurements 2 10 kHz An Under bandwidth message appears for voltage measurements lt 10 Hz A message appears next to min or max measurements that have gone out of bounds Push Reset DVM Statistics to remove the from the display See page 131 Taking Digital Voltmeter Measurements MDO3000 Series Oscilloscopes User Manual 51 Get Acquainted with the Instrument Front Panel Connectors 1 Logic Probe Connector 2 Channel 1 2 3 4 Channel inputs with TekVPI Versatile Probe Interface OOO 00O ROO 3 RF input connector ae 4 PROBE COMP Square wave signal Oe source to compensate or calibrate probes Output voltage 0 2 5 V amplitude 1 behind 1 kQ 2 Frequency 1 kHz 5 Ground 6 Application Module Slots Side Panel Connector 1 Ground strap connector This is a receptacle for a grounding strap 0968 043 52 MDO3000 Series Oscilloscopes User Manual Get Acquainted with the Instrument Rear Panel Connectors 1 AFG OUT Use the AFG OUT port to transmit signals from the arbitrary function generator
16. set the deskew values of each channel to the recommended values push Set all deskews to recommended values on the side menu Quick Tips 110 Using Probes with the TekProbe II and TekVPI Interfaces When you attach a probe with the TekProbe II or the TekVPI interface the oscilloscope sets the channel sensitivity coupling and termination resistance automatically to match the probe requirements Tek Probe Il probes require use of the TPA BNC Adapter The Difference Between Vertical Position and Offset Adjust the vertical position to place the waveforms where you want to see them The waveform baseline indicators indicate the zero Volts or Amps level for each waveform If you adjust the channel s Vertical Scale the waveform expands or contracts around the waveform s baseline indicator When you use the Channel lt x gt gt More gt Offset gt Vertical Offset control to move a waveform the baseline indicator no longer represents zero Instead it represents the level of the offset If you adjust the channel s Vertical Scale the waveform expands or contracts around the waveform s baseline indicator 50 Q Protection If you select 50 Q termination the maximum vertical scale factor is limited to 1 V div except that with a 10X probe the scale factor is 10 V If you apply excessive input voltage the oscilloscope automatically switches to 1 MQ termination to protect the internal 50 Q termination For more details refer to the specifications
17. the 10 digit keypad on the front panel z Sgi a rd ee E 6 Push Fine to turn off or on the ability to CE i make smaller adjustments O Celie A i Using the Menu Buttons Use the menu buttons to perform many functions in the oscilloscope vd 3249 015 1 Measure Push to perform automated measurements on waveforms and to access the digital voltmeter DVM and waveform histogram functions 2 Search Push to perform an automated search through an acquisition for user defined events criteria 3 Autoset Push to perform an automatic setup of oscilloscope settings 4 Test Push to activate advanced or application specific testing features MDO3000 Series Oscilloscopes User Manual Get Acquainted with the Instrument Acquire Push to set the acquisition mode and adjust the record length Trigger Menu Push to specify trigger settings M Push to manage the math waveform including the display or removal of the math waveform from the display R Push to manage reference waveforms including the display or removal of each reference waveform from the display oS st S SF B1 or B2 Push to define and display a serial bus if you have the appropriate application modules Parallel bus support is available on MDO3000 products with the MDO3MSO option installed Also push the B1 or B2 button to display or remove the corresponding bus from the display 10 AFG Push to enable the arbitrary function generator output
18. the oscilloscope such as a keyboard or a flash drive 24 Save Push to perform an immediate save operation The save operation uses the current save parameters as defined in the Save Recall menu 25 Save Recall Menu Push to save and recall setups waveforms and screen images to internal memory or a USB flash drive 26 Default Setup Push to perform an immediate restore of the oscilloscope to the default settings 27 Utility Push to activate the system utility functions such as selecting a language or setting the date time 28 D15 D0 Push to display or remove the digital channels from the display and to access the digital channel setup menu with option MDO3MSO only 29 Menu Off Push to clear a displayed menu from the screen MDO3000 Series Oscilloscopes User Manual Get Acquainted with the Instrument Identifying Items in the Time Domain Display The items shown in the graphic below may appear in the display Not all of these items are visible at any given time Some readouts move outside the graticule area when menus are turned off Trig d am 400 0ns 152 0mV 2 800ps 240 0mY A2 400ps A392 0m d dt 163 3kV s D gt _ 1 pele 713 4 5 jf 024 S iT3S 6 Jii 24a 7 Ik 3 70 D gt rn g aa 400ns 2 506S s uy 10 00 10k points 12 0mV 29 gt 200mV 100mV 400us 400s TS ttttto AFG Sine 1 0000MHz 500 00mVpp l gt Timing Resolution
19. 01 Display Waveform or Trace Data 102 3 Dots on will display the waveform record ene points as dots on the screen Dots off connects the dots with vectors Dots Only On j 4 Push Persistence to Off to display the fake display persistence ace Off 5 Push Persist Time and turn Multipurpose ola a to have waveform data remain on screen JTE for a user specified amount of time 6 Push Set to Auto to have the oscilloscope Set to Auto automatically determine a persistence time for you 7 Push Clear Persistence to reset the pie Per persistence information ae 8 To display the amplitude from one waveform against the amplitude from another push XY Display Then push Triggered XY from the side menu A data point from the first waveform specifies the horizontal location while the corresponding data point from the second waveform specifies the vertical location for each displayed point You can optionally view both the YT and XY displays simultaneously on the same screen Quick Tips Push Dots Only On Off on the side menu Waveform m Variable persistence accumulates record points for a specified time interval Each record point decays independently according to the time interval Use variable persistence for displaying infrequently appearing signal anomalies such as glitches Infinite persistence continuously accumulates record points until you change one of the acquisition display settings Use infinite persistence for
20. 2 AUX OUT 3 LAN Use the LAN Ethernet port RJ 45 connector to connect the oscilloscope to a 10 100 Base T local area network 4 Video Out Use the Video Out port DB 15 female connector to show the oscilloscope display on an external monitor or projector 5 USB 2 0 Device port Use the USB 2 0 High Speed Device port to connect a PictBridge compatible printer or for direct PC control of the oscilloscope using USBTMC protocol NOTE The cable connected from the USB 2 0 Device port to the host computer must meet the USB2 0 specification for high speed operation when connected to a high speed host controller USB 2 0 Host port Use the USB 2 0 High Speed Host port to connect a USB memory device or USB keyboard Power input Attach to an AC power line with integral safety ground Lock Use to secure the oscilloscope o oo N D VESA mount 75 mm MDO3000 Series Oscilloscopes User Manual 53 Acquire the Signal Acquire the Signal This section describes concepts of and procedures for setting up the oscilloscope to acquire the signal as you want it to Setting Up Analog Channels Use front panel buttons and knobs to set up your instrument to acquire signals using the analog channels 1 Connect the TPP0250 TPPOSO0B TPP1000 or VPI probe to the input signal source 2 Select the input channel by pushing the front panel buttons NOTE If you are using a probe that does not Supply probe encoding set the attenuation probe
21. 2 00ns 3249 023 1 The acquisition readout shows when an acquisition is running stopped or when acquisition preview is in effect Run acquisitions enabled Stop Acquisitions not enabled Roll roll mode 40 ms div or slower PreVu The oscilloscope is stopped or between triggers You can change the horizontal or vertical position or scale to see approximately what the next acquisition will look like A B When using the average acquisition mode B shows the total number of acquisitions to be averaged set this using the Acquisition Mode side menu and A shows the current progress towards this total number 2 The trigger position icon shows the trigger position in the acquisition 1785 126 3 The expansion point icon an orange triangle shows the point that the horizontal scale expands and compresses around To make the expansion point the same as the trigger point push Acquire and set the lower menu Delay item to Off MDO3000 Series Oscilloscopes User Manual 45 Get Acquainted with the Instrument 46 2121 241 4 The waveform record view shows the trigger location relative to the waveform record The line color corresponds to the selected waveform color The brackets show the part of the record currently displayed on the screen Run Auto 2121 242 5 The trigger status readout shows trigger status Status conditions are PrTrig Acquiring pretrigger data Trig Waiting for trigger Trigd Triggered Auto
22. MDO3000 Series Mixed Domain Oscilloscopes User Manual www tektronix com 077 0968 00 Tektronix 7 Get Acquainted with the Instrument Front Panel Menus and Controls The front panel has buttons and controls for the functions that you use most often Use the menu buttons to access more specialized functions Using the Menu System To use the menu system 1 Push a front panel menu button to display the menu that you want to use NOTE The B1 and B2 buttons support up to two different serial or parallel buses ok 3249 013 2 Push a lower menu button If a pop out fans menu appears turn Multipurpose a to ae ae ee ee select the desired choice If a pop up ot Come meow Bizz gt i menu appears push the button again to select the desired choice 3249 026 3 Push aside menu button If the menu item contains more than one choice push the side button repeatedly to cycle through the choices If a pop out menu appears turn Multipurpose a to select the desired choice CCE E a CpepeE om 0968 011 MDO3000 Series Oscilloscopes User Manual oT Get Acquainted with the Instrument 38 4 To remove a side menu push the lower button again or push Menu Off 5 Certain menu choices require you to set a numeric value to complete the setup You can use the upper and lower multipurpose knobs a and b to adjust values You can also set many numerical values with
23. Multipurpose a to select the channel to measure on Multipurpose 5 To remove a measurement push Remove Measurement turn Multipurpose a to select the specific measurement and push OK Remove Measurement on the side menu Quick Tips m To remove all measurements select Remove All Measurements E A Z symbol appears instead of the expected numerical measurement if a vertical clipping condition exists Part of the waveform is above or below the display To obtain a proper numerical measurement turn the vertical scale and position knobs to make all of the waveform appear in the display m lf the oscilloscope displays a Low Resolution message increase the record length of the acquisition so that the 122 oscilloscope has more points from which to calculate the measurement MDO3000 Series Oscilloscopes User Manual Analyze Waveform or Trace Data selecting Automatic Measurements in the Time Domain The following tables list each automatic measurement by category time or amplitude See page 122 Taking Automatic Measurements in the Time Domain Time measurements Measurement Frequency Period Rise Time Fall Time Delay Phase Positive Pulse Width Negative Pulse Width Positive Duty Cycle Negative Duty Cycle Burst Width elele algi S a e MDO3000 Series Oscilloscopes User Manual Description The first cycle in a waveform or gated region Frequency is the reciprocal of the period it is measur
24. a value where half of all histogram data points are less than this value and half are greater than this value Displays the peak to peak value of the histogram Vertical histograms display the voltage of the highest nonzero bin minus the voltage of the lowest nonzero bin Horizontal histograms display the time of the right most nonzero bin minus the time of the left most nonzero bin Displays the voltage of the highest nonzero bin in vertical histograms or the time of the right most nonzero bin in horizontal histograms Displays the voltage of the lowest nonzero bin in vertical histograms or the time of the left most nonzero bin in horizontal histograms Measures the average of all histogram data points within or on the histogram box Measures the standard deviation Root Mean Square RMS deviation of all histogram data points within or on the histogram box Displays the percentage of the hits in the histogram that are within one standard deviation of the histogram mean Displays the percentage of the hits in the histogram that are within two standard deviations of the histogram mean Displays the percentage of the hits in the histogram that are within three standard deviations of the histogram mean Customizing an Automatic Measurement in the Time Domain You can customize automatic measurements by using gating modifying measurement statistics adjusting the measurement reference levels or taking a snapshot 126 Gating Ga
25. acquires using a single trigger event MDO3000 Series Oscilloscopes User Manual 5 0V 5 0V yr N ov ov OV OV d Ws ws Input signal Sampled points 90V 07Y Digital values Record points ATN JU 2121 030 Sampling rate 59 Acquire the Signal Waveform Record The instrument builds the waveform record through use of the following parameters Sample interval The time between recorded sample points Adjust this by turning the Horizontal Scale knob or pushing Acquire and changing the record length in the Acquire menu m Record length The number of samples required to fill a waveform record Set this by pushing the Acquire button and using the lower and side menus m Trigger point The zero time reference in a waveform record It is shown on the screen by an orange T m Horizontal position When Delay Mode is on this is the time from the trigger point to the expansion point Adjust this by turning the Horizontal Position knob Use a positive time to acquire the record after the trigger point Use a negative time to acquire it before the trigger point m Expansion point The point that the horizontal scale expands and contracts around It is shown by an orange triangle Using FastAcq FastAcg provides high speed waveform capture It is helpful in finding elusive signal anomalies Fast acquisition mode reduces the dead time between waveform
26. age The duty cycle is measured on the first cycle in the waveform or gated region The duration of a burst a series of transient events and is measured over the entire waveform or gated region 123 Analyze Waveform or Trace Data Rise time Falltime 100 90 Voltage 50 Pulse width 10 0 1785 084 Amplitude measurements Measurement Peak to peak Amplitude Max Min High Low Positive Overshoot Negative Overshoot Total overshoot Description The absolute difference between the maximum and minimum amplitude in the entire waveform or gated region The high value less the low value measured over the entire waveform or gated region The most positive peak voltage Max is measured over the entire waveform or gated region The most negative peak voltage Min is measured over the entire waveform or gated region This value is used as 100 whenever high reference mid reference or low reference values are needed such as in fall time or rise time measurements Calculate using either the min max or histogram method The min max method uses the maximum value found The histogram method uses the most common value found above the midpoint This value is measured over the entire waveform or gated region This value is used as 0 whenever high reference mid reference or low reference values are needed such as in fall time or rise time measurements Calculate
27. and access the AFG menu 11 Vertical Position Turn to adjust the vertical position of the corresponding waveform Push to center the waveform baseline indicator 12 Channel 1 2 3 or 4 Menu Push to set vertical parameters for input waveforms and to display or remove the corresponding waveform from the display 13 Vertical Scale Turn to adjust the vertical scale factor of the corresponding waveform volts division Push the front panel Fine button to make smaller adjustments Below the display buttons Use the buttons below the display to perform many functions in the oscilloscope 1 Save Recall Menu Push to define the Save button to save and recall setups waveforms or screen images to internal memory a USB flash drive or a mounted network drive 0968 051 2 Default Setup Push to perform an immediate restore of the oscilloscope to the default settings Default Setup 3 Utility Push to activate the system utility functions such as selecting a language or setting the date time N 3249 012 MDO3000 Series Oscilloscopes User Manual 39 Get Acquainted with the Instrument 40 4 B1 or B2 Push to define and display a bus if you have the appropriate module application keys m MDO3AERO supports MIL STD 1553 buses m MDOS3AUDIO supports 12S Left Justified LJ Right Justified Ru and TDM buses MDO3AUTO supports CAN and LIN buses E MDO3EMBD supports I2C and SPI buse
28. black the D1 indicator is brown the D2 indicator is red and so on MDO3000 Series Oscilloscopes User Manual 47 Get Acquainted with the Instrument 48 ATT 17 The group icon indicates when digital channels are grouped 2121 216 o 2121 253 18 The bus display shows decoded packet level information for serial buses or for parallel buses The bus indicator shows the bus number and bus type 19 For analog channels the waveform baseline indicator shows the zero volt level of a waveform assuming you have not used any offset The icon colors correspond to the waveform colors 1785 125 Identifying Items in the Frequency Domain Display Activate the frequency domain display by pressing the front panel RF button MDO3000 Series Oscilloscopes User Manual Get Acquainted with the Instrument Tek Run Auto i 0 00 dBm 2 4006Hz l T 17 3 dBm Ss eee ee PE 1 90DHz i Ref 0 00 dBm Scale 10 0 dB divy JCF 2 39919893GHz Span 1 00000GHz RB Ww J 3249 024 1 Vertical graticule labels Start frequency Reference level Vertical scale Center frequency Span and resolution bandwidth Stop frequency o nS M gt e YS PS Reference marker MDO3000 Series Oscilloscopes User Manual 49 Get Acquainted with the Instrument 50 Identifying Items in the Arbitrary Function Generator Display Tek Run E Ley
29. d low levels of the desired waveform 4 Push the Output Settings button on the lower menu to adjust the load impedance and amount of additive noise You can enable the AFG trigger pulse to 5 come out of the rear panel AUX OUT port This is useful if you want an AUX OUT pulse w that is synchronized to your AFG waveform block To enable this feature push AFG gt Output Settings gt AUX OUT gt AFG EF F a ie The channel 1 sine wave shows the output of the AFG The channel 2 square wave show the output of the AFG sync pulse It comes from the AUX OUT port 184 MDO3000 Series Oscilloscopes User Manual Restrictions When an output frequency is The output waveform MHz higher than 4 9 MHz some restrictions exist A frequency setting divided frequency that is lower than 4 9 MHz is lt 4 9 MH output from the AUX OUT port The AFG trigger 7 frequency will be limited as shown in the table gt 4 9 MHz to 14 7 MHz ae gt 14 7 MHz to 24 5 MHz gt 24 5 MHz to 34 3 MHz gt 34 3 MHz to 44 1 MHz gt 44 1 MHz to 50 MHz How to create an arbitrary waveform Use the Arbitrary Function Generator AFG trigger output frequency MHz Signal frequency Signal frequency 3 Signal frequency 5 Signal frequency 7 Signal frequency 9 Signal frequency 11 You can create the waveform from any of the four internal ARB memories the four or two analog channels the four or two reference waveforms the math wavefor
30. d the proper character to use You can use the lower menu buttons to edit Pell 5 Delete Clear the label as needed ALIE pace 9 Continue scrolling and pushing Select until you have entered all the desired characters For another label push the side and lower menu arrow keys to reposition the insertion point 10 Push Display Labels and select On to see ee the label oi Off Using the Default Setup To return the oscilloscope to its default settings 1 Push Default Setup 4 Default y Setup 3249 008 2 If you change your mind push Undo Default Setup to undo the last default setup MDO3000 Series Oscilloscopes User Manual 57 Acquire the Signal Using Autoset Autoset adjusts the instrument acquisition horizontal trigger and vertical controls such that it displays four or five waveform cycles for analog channels with the trigger near the midlevel and ten cycles for digital channels Autoset works with both the analog and digital channels 1 To autoset an analog channel connect the see analog probe and then select the input a Be channel See page 54 Setting Up Analog Channels 7 eT fB eao SAA ez i To autoset a digital channel connect the logic probe and select the input channel See page 79 Setting Up Digital Channels 2 Push Autoset to execute an Autoset 3 If desired push Undo Autoset to undo Fe the last Autoset utose
31. ed in hertz Hz where one Hz is one cycle per second The time required to complete the first cycle in a waveform or gated region Period is the reciprocal of frequency and is measured in seconds The time required for the leading edge of the first pulse in the waveform or gated region to rise from the low reference value default 10 to the high reference value default 90 of the final value The time required for the falling edge of the first pulse in the waveform or gated region to fall from the high reference value default 90 to the low reference value default 10 of the final value The time between the mid reference default 50 amplitude point of two different waveforms See also Phase The amount of time that one waveform leads or lags another waveform expressed in degrees where 360 makes up one waveform cycle See also Delay The distance time between the mid reference default 50 amplitude points of a positive pulse The measurement is made on the first pulse in the waveform or gated region The distance time between the mid reference default 50 amplitude points of a negative pulse The measurement is made on the first pulse in the waveform or gated region The ratio of the positive pulse width to the signal period expressed as a percentage The duty cycle is measured on the first cycle in the waveform or gated region The ratio of the negative pulse width to the signal period expressed as a percent
32. ersion 3 1 or later with the MDO3000 How to access the AFG To access the AFG output connect your cable to the port marked AFG OUT in the back of the oscilloscope To see the output of the AFG connect the other end of the cable to one of the input channels on the front of the oscilloscope N RS N Push the front panel AFG button to turn the AFG output on and off The button lights up when the output is on The light goes out when it is off The On Off status is always off when you recall an instrument setup The AFG will always come up in the off state when you turn the oscilloscope power on MDO3000 Series Oscilloscopes User Manual 183 Use the Arbitrary Function Generator How to change the waveform type 1 Push the AFG button to bring up the AFG as a eos lower menu ITE Al L O PS 0am 0968 058 Waveform Frequency 100 00kHz Period 10 000Hs Output Sine form Amplitude 500 00m High 250 00mV Settings Settings Offset Vpp Low 250 00 0 0000 V mV 2 Push the Waveform button on the AFG Takia E lower menu and turn the Multipurpose a ES iiaii a knob to select the waveform type INP aa OA EA A OA OA A E DON para i ee on ail Pied wiles Sind J tma lj mA Lomi Y W V Y y i V Eeperertiol Bice a it k aa ae A 3 Push the Waveform Settings button on the AFG lower menu to set the frequency period amplitude offset and the high an
33. etween Absolute Readout and Delta readouts Delta readouts are relative to the Reference Marker Delta MDO3000 Series Oscilloscopes User Manual 119 Analyze Waveform or Trace Data Automatic Peak Markers Automatic peak markers are on by default and assist with quickly identifying the frequency and amplitude of peaks in the spectrum 1 The Reference Marker is placed on the highest amplitude peak Itis marked with R Chae Yos weer dee ie 0 Bc a red R in a triangle 2 The automatic markers indicate frequency and amplitude 32 7 dBm 42 8 dBm 32 5 dBm 3 Absolute readouts show the actual frequency and amplitude of the automatic markers 4 Delta readouts show the frequency and amplitude of the automatic markers relative to the reference marker In the screen shot shown below a marker has been placed on each of the obvious peaks in the display The Reference Marker is the highest peak It is marked with the red R in a triangle and its readout is shown in red text 1 Reference marker 2 Automatic markers es Nie 0 00 dBm 2 39616GF Y2 lt or 192G V2 40984GHz eN 40 0 dBm 27 8 dB pandae harain 33 2 dB 2 4106Hz gt 2 3906H gt Ref0 00 dBm Scale 10 0 dB div JCF 2 40000000GHz Span 20 0000MHz RBW 20 0kHz 0968 062 Use Threshold and Excursion to define which peaks are marked The threshold is a minimum amplitude that a signal must
34. ger information With Delay Mode off the bottom line shows the time location of the trigger within the acquisition as a percentage 400ns 10 00 6 12 The Timing Resolution readout shows the timing resolution of the digital channels Timing resolution is the time between samples It is the reciprocal of the digital sample rate When the MagniVu control is on MagniVu appears in the readout D15 mm memes SESS SESE DO gt Timing Resolution 2 00ns 3249 025 13 Measurement readouts show the selected measurements You can select up to four measurements to display at one time A A symbol appears instead of the expected numerical measurement if a vertical clipping condition exists Part of the waveform is above or below the display To obtain a proper numerical measurement turn the vertical scale and position knobs to make all of the waveform appear in the display CD Period 995 us CD Freq 1 004 kHz 1785 144 14 The auxiliary waveform readouts show the vertical and horizontal scale factors of the math and reference waveforms Mo 1785 138 15 The channel readout shows the channel scale factor per division coupling invert and bandwidth status Adjust with the Vertical Scale knob and in the channel 1 2 3 or 4 menus D 20 0mvV Qw 2121 243 16 For digital channels the baseline indicators point to the high and low levels The indicator colors follow the color code used on resistors The DO indicator is
35. hat point is displayed in the cursor readout A Readout 400 0ns 152 0m The A readouts indicate the difference b 2 800ps 240 0m between the cursor positions A2 400ps A392 0m dif dt 163 3kV s a Readout Indicates that the value is controlled by the Multipurpose a knob b Readout Indicates that the value is controlled by the Multipurpose b knob The horizontal cursor lines on the display measure the vertical parameters typically voltage MDO3000 Series Oscilloscopes User Manual 135 Analyze Waveform or Trace Data The vertical cursor lines on the display measure horizontal parameters typically time The square and circle shapes in the readout map to the multipurpose knobs when both vertical and horizontal cursors are present Using XY Cursors When the XY Display mode is on the cursor readouts will appear to the right of the lower graticule XY They will include rectangular polar product and ratio readouts The oscilloscope will display vertical bar waveform cursors in the upper graticule YT setting Up a Histogram You can display a vertical voltage or horizontal time histogram Use histogram measurements to get statistical measurement data for a section of a waveform along one axis The sources for a histogram can be any of the four or two analog channels a math waveform or any of the four or two reference waveforms To Display a Histogram 1 Set up the oscilloscope to show
36. how what the load would see based on the load impedance Since the AFG is a 50 Q source for most accurate operation set the load impedance to 50 Q and set the input channel to 50 Q NOTE Noise range is reduced above 50 of the function Maximum Amplitude according to the function Noise Percent Maximum 100 0 Maximum Amplitude Amplitude 1 0 188 MDO3000 Series Oscilloscopes User Manual
37. ing it clockwise zooms in further Turning it counterclockwise zooms out Play pause button Push to start or stop the automatic panning of a waveform Control the speed and direction with the pan knob lt Prev Push to jump to the previous waveform mark Set Clear Mark Push to establish or delete a waveform mark Next Push to jump to the next waveform mark 3249 018 MDO3000 Series Oscilloscopes User Manual Get Acquainted with the Instrument 14 Horizontal Position Turn to adjust the trigger point location relative to the acquired waveforms Push to center when delay is on Push to set to 10 when delay is off 15 Horizontal Scale Turn to adjust the horizontal scale time division 16 Autoset Push to automatically set the vertical horizontal and trigger controls for a usable stable display 17 Single Push to make a single sequence acquisition 18 Run Stop Push to start or stop acquisitions 19 Trigger Level Turn to adjust the trigger level Push Level to Set 50 Push the Trigger level knob to set the trigger level to the midpoint of the waveform 20 Force Trig Push to force an immediate trigger event MDO3000 Series Oscilloscopes User Manual 43 Get Acquainted with the Instrument 44 f 3 ol A 0968 060 21 Print Push to print to the selected printer 22 Power switch Push to power on or off the oscilloscope 23 USB 2 0 Host port Insert a USB peripheral to
38. ipurpose a and select Display 4 Push Backlight N Utility 3249 012 MDO3000 Series Oscilloscopes User Manual Display Waveform or Trace Data 5 Select the intensity level on the side menu Backlight Choices are High Medium and Low Backlight Intensity 6 Enabling Auto Dim will turn down the Auto Dim screen lighting after a set time Using it may Off help prolong the LCD life Setting Waveform Intensity Intensity 1 Push Intensity on the front panel This will bring up the intensity readout on a Waveform Intensity 35 the display b Graticule Intensity 75 2 Turn Multipurpose a to select the desired waveform intensity Multipurpose 3 Turn Multipurpose b to select the desired intensity for the graticule Intensity 4 Push Intensity again to clear the intensity readout from the display MDO3000 Series Oscilloscopes User Manual 105 Display Waveform or Trace Data Scaling and Positioning a Waveform 106 Use the horizontal controls to adjust the time base adjust the trigger point and to examine waveform details more closely You can also use the Wave Inspector Pan and Zoom controls to adjust the display of waveforms See page 147 Using Wave Inspector to Manage Long Record Length Waveforms lf you push the Horizontal Position knob and Delay is set to On the horizontal position is set to 0 seconds If you push it and Delay is set to Off the horizontal position is se
39. ked status and units When the cursors are on you can turn the multipurpose knobs to control their position 2 Turn the upper multipurpose knob a when activated to move a cursor to set a numerical parameter value for a menu item or to select from a pop out list of choices Push the Fine button to toggle between coarse and fine adjustment Screen icons tell you when a or b are active 3 Select Push to activate special functions MDO3000 Series Oscilloscopes User Manual 41 Get Acquainted with the Instrument 42 10 11 12 13 For example when using the two vertical cursors and no horizontal ones are visible you can push this button to link or unlink the cursors When the two vertical and two horizontal cursors are both visible you can push this button to make either the vertical cursors or the horizontal cursors active Fine Push to toggle between making coarse and fine adjustments with the many operations of multipurpose knobs a and b Turn the lower Multipurpose b knob when activated to move a cursor or set a numerical parameter value for a menu item Push Fine to make adjustments more slowly Intensity Push to enable Multipurpose a to control waveform display intensity and knob b to control graticule intensity 3249 017 Zoom button Push to activate zoom mode Pan outer knob Turn to scroll the zoom window through the acquired waveform Zoom scale inner knob Turn to control the zoom factor Turn
40. ly occurring events Normal uses the default channel color like yellow for channel one along with gray scale to indicate frequency of occurrence where frequently occurring events are bright Inverted uses the default channel color along with gray scale to indicate frequency of occurrence where rarely occurring events are bright These color palettes help highlight the events that over time occur more often or in the case of infrequent anomalies occur less often 1785 039 MDO3000 Series Oscilloscopes User Manual 61 Acquire the Signal How the Analog Acquisition Modes Work Sample mode retains the first sampled point from each acquisition interval Sample is the default mode Peak Detect mode uses the highest and lowest of all the samples contained in two consecutive acquisition intervals This mode only works with real time noninterpolated sampling and is useful for catching high frequency glitches Hi Res mode calculates the average of all the samples for each acquisition interval This mode also only works with real time noninterpolated sampling Hi Res provides a higher resolution lower bandwidth waveform Envelope mode finds the highest and lowest record points over all acquisitions Envelope uses Peak Detect for each individual acquisition Average mode calculates the average value for each record point over a user specified number of acquisitions Average uses Sample mode for each individual acq
41. m or the 16 digital channel waveforms You can also use a CSV spreadsheet file stored externally or a predefined template square sine ramp pulse or noise 1 Push the AFG button to bring up the AFG lower menu on Waveform Waveform Waveform Settings Edit 2 On the lower menu push Waveform and turn Multipurpose a to select Arbitrary from the list of waveforms on the resulting pop up menu 3 Push Waveform Settings to set the frequency period amplitude offset and high and low levels 4 Push Waveform Edit to bring up the Waveform Edit lower menu This menu will let you manipulate existing waveform points as well as to add and delete points and to edit the voltage level For cases with many points to edit consider using Tektronix ArbExpress software which is available for free download from www tektronix com software Also use the Waveform Edit menu to create new arbitrary waveforms in the instrument You can do this by loading them from files or from live channels MDO3000 Series Oscilloscopes User Manual 100 00kHz Period Output 500 00m 10 000hV Settings Vpp High 0000V 250 00mV Low 250 00mV 185 Use the Arbitrary Function Generator 186 lf needed push AFG gt Waveform Edit to bring up the waveform edit lower menu 5 Push Edit Existing to change add or delete points in a current waveform When you enable the internal editor the screen M splits into a smaller t
42. nel 1 2 Push Measure 3 Push the bottom menu button labelled DVM MDO3000 Series Oscilloscopes User Manual Measure 0968 048 Add Remove ia a Waveform Measure His tograms Measure ment ment k B 131 Analyze Waveform or Trace Data 4 From the side menu select the desired Mode Source and Display Style View the finished results Digital Voltmeter Mode a oi Source b 1 Autorange Unavail able when Triggering on DVM Source Display Style Full Minimized oft sete Taking Manual Measurements with Cursors Cursors are on screen markers that you position in the waveform display to take manual measurements on acquired data They appear as horizontal and or as vertical lines To use cursors on analog or digital channels 1 Push Cursors to turn cursors on NOTE A second push turns cursors off You can also push and hold Cursors to display the cursor menu 132 4 3 POE a ki af g m E MDO3000 Series Oscilloscopes User Manual Analyze Waveform or Trace Data In this example two vertical cursors appear l lt a g i 400 005 152 0mV on the selected waveform As you turn eee eres T f O ads 23920m dv dt 163 3kV s Multipurpose a you move one cursor tothe right or left As you turn knob Multipurpose 2 b you move the other cursor aaa a eee S q ee A eee i oe _ CE R a 0968 054 2 With c
43. nel 1 through 4 buttons or by pushing the D15 DO button 10 Push and hold Cursors to display the cursor menu again a a aR Cams i1aec om ar A 11 Push Source on the lower menu A pop up menu will appear The default menu selection of Selected Waveform will cause the cursors to take measurements on the selected last used waveform 12 Turn Multipurpose a to choose a channel to measure other than the one pointed to by Selected Waveform 13 Push Menu Off to remove the pop up menu 14 Turn Multipurpose a and take cursor measurements on the alternate waveform 134 MDO3000 Series Oscilloscopes User Manual Analyze Waveform or Trace Data Cursors 15 Push Cursors again This turns off the cursors The screen no longer displays the cursors and the cursor readout Using Cursor Readouts Cursor readouts supply textual and numeric information relating to the current cursor positions The oscilloscope always shows the readouts when the cursors are turned on Readouts appear in the upper right corner of the graticule If Zoom is on the readout appears in the upper right corner of the zoom window When a bus is selected the readout shows the decoded bus data in the format you have selected from the choices in the bus menu When a digital channel is selected the cursors show the values of all displayed digital channels NOTE When serial or parallel buses are selected the data value at t
44. nu to load a saved waveform from a file When you have chosen the desired waveform push OK Load from the side menu Clear the menu by pushing Menu Off twice Be sure that you have a BNC cable connected from the AUX OUT port on the back to the channel 1 port on the front View your arbitrary waveform on the fo 4 oscilloscope display 8 On the lower menu push Save Waveform Turn Multipurpose a to select which of the four slots to store your newly created waveform Push OK Save If you want push Edit Labels and use Multipurpose a and the lower menu to assign a name to your new waveform Clear the label menu by pushing Menu off MDO3000 Series Oscilloscopes User Manual 187 Use the Arbitrary Function Generator Quick Tips m You can save arbitrary waveforms in CSV format A CSV file consists of sets of waveform point pairs voltage point number m You can load arbitrary waveforms from a variety of active time domain waveform sources Channel 1 4 Ref 1 4 MATH digital channels DO D15 m The arbitrary waveform memory may be saved to and loaded from one of four arbitrary waveform memory locations These may only be loaded to the active arbitrary waveform You cannot save them to files or recall them directly to the arbitrary waveform memory locations NOTE Loading from digital waveform sources will use the main waveform record MagniVu records are not supported NOTE Load impedance scales the vertical settings to s
45. on type from the resulting Fa pop out menu ee a Stop Acq 7 Select whether or not to enable the action Enable Action Ql off 8 If you selected E mail Notification from the Configure list of actions above you can now select eal Configure E mail from the side menu to define the parameters of the e mail NOTE There is a single set of SMTP server settings saved for both Act on Event e mail notification and for the e mail printer set through the Utility gt Print Setup gt Select Printer gt Add E mail Printer menus If you modify the SMTP settings in one of these two locations they will be similarly modified in the other location 9 Push Repeat from the lower menu This lets you set how many times to repeat the selected event and resulting action 66 MDO3000 Series Oscilloscopes User Manual Display Waveform or Trace Data Display Waveform or Trace Data This section contains concepts and procedures for displaying the acquired waveform or trace Adding and Removing a Waveform 1 To add or remove a waveform from the display push the corresponding front Qo Qo wy Qo panel channel button or the D15 D0 m 2 Menu 3 4 FA EA BUA BS button You can use the channel as a trigger source whether or not it is displayed aM 0968 024 Setting the Display Style and Persistence 1 To set the display style push Acquire 2 Push Waveform Display MDO3000 Series Oscilloscopes User Manual 1
46. op window and a larger bottom window The smaller top part of the screen becomes an overview which shows the entire waveform memory A box shows the zoomed in portion of ian the waveform Wo peel bao atal The larger lower part becomes the zoomed in view of the overview as defined by the boxin the top part of the screen This lower part shows up Fos LS to 500 points of the record a Turn the Multipurpose a knob to select a point to edit Turn the Multipurpose b knob to set the voltage level of that point The voltage level is a function of the current amplitude and offset settings for the waveform Use the side menu items to add or remove points from the waveform 6 Push Create New from the lower menu to make a fresh arbitrary waveform On the resulting side menu turn Multipurpose a or use the keypad to define the number of points in the waveform Your waveform can have up to 131 072 points Turn Multipurpose b to choose the basic function Choose between square sine ramp pulse and noise Push OK Create to build the new waveform pgp Ll ata ese 100 00kHz Period Save pl 00m 19 000 HS Waveform Low 250 00mV MDO3000 Series Oscilloscopes User Manual Use the Arbitrary Function Generator 7 Push the lower menu button labeled Load Waveform Turn Multipurpose a to choose which of your waveforms to display Also you can use the side me
47. readouts for manual markers indicate frequency and amplitude just like automatic marker readouts As with automatic peak marker readouts the manual marker readouts can show either absolute or delta values 1 One manual marker is controlled by Multipurpose a Tek Stop N 0 00 din os a 4 2 The other manual marker is controlled iia ks 2 394006Hz by Multipurpose b 20 0 115 dBn Hz ee a aan e a a CONT ce 30 0 ees tp Ee ees eee n 1 1 ESEE EEEE EEEE ORERE 1 EPEE BART ETRS 5 Scale 10 0 dB div JCF 2 400000006Hz Span 20 0000MHz RBW 20 0kHz 0968 061 3 Delta readouts for frequency and amplitude are shown at the top of the Y 3 84MHz 1 92MHz 13 3 dBc 3 42 dBc display 2 55 a always shows the noise density 2 ce ee d Bm Hz 2913 091 5 The third line of manual marker b always 5 shows noise density when you choose absolute markers It shows phase noise when you choose delta markers dBc Hz MDO3000 Series Oscilloscopes User Manual 121 Analyze Waveform or Trace Data Taking Automatic Measurements in the Time Domain To take an automatic measurement in the time domain 1 If the instrument is in the frequency domain push channel 1 2 Push Measure a ODS om seats 3 Push Add Measurement 4 Turn the Multipurpose b knob to select the specific measurement If needed then turn
48. rtical menu for the designated waveform The vertical menu only affects TE the selected waveform a Pushing a channel button will also select or cancel that waveform selection Push Coupling repeatedly to select the Coupling ma Invert Bandwidth coupling to use We Ac On Il Use DC coupling to pass both AC and DC MA 509 components Use AC coupling to block the DC component and show only the AC signal Push Termination repeatedly to select the input impedance to use Set the input impedance termination to 50 Q or 1 MQ if using DC coupling Input impedance is automatically set to 1 MQ when using AC coupling 75 Q is available on models lt 500 MHz For more information on input impedance see Quick Tips See page 110 Quick Tips Push Invert to invert the signal Select Off for normal operation and On to invert the polarity of the signal in the preamplifier MDO3000 Series Oscilloscopes User Manual 107 Display Waveform or Trace Data 5 Push Bandwidth and select the desired bandwidth on the side menu The set choices are Full 250 MHz and 20 MHz Additional choices may appear depending on the probe that you use Select Full to set the bandwidth to the full oscilloscope bandwidth Select 250 MHz to set the bandwidth to 250 MHz Select 20 MHz to set the bandwidth to 20 MHz NOTE 100 MHz and 200 MHz model oscilloscopes do not include a 250 MHz option on the menu 6 Push Label to create a label for the
49. s MDO3COMP supports RS 232 RS 422 RS 485 and UART buses m MDO3FLEX supports FlexRay buses m MDO3USB supports USB 2 0 buses Also push the B1 or B2 button to display or remove the corresponding bus from the display R Push to manage reference waveforms and traces including the display or removal of each reference waveform or trace from the display M Push to manage the math waveform or trace including the display or removal of the math waveform or trace from the display i 0000 0000 OOC 6 00000 0968 050 MDO3000 Series Oscilloscopes User Manual Get Acquainted with the Instrument Using Spectral Analysis Controls These buttons configure the acquisition and display of the RF input 1 RF Push to bring up the frequency domain display and menu The RF menu provides access to the Spectrogram display 2 Freq Span Push to specify the portion of the spectrum to view on the display Set the center frequency and the span or set the start and stop frequency 3 Ampl Push to set the reference level 4 BW Push to define the resolution bandwidth 5 Markers Push to set automatic or manual markers Using Other Controls 3249 016 1 Cursors Push once to activate the two vertical cursors Push again to turn off all cursors Push and hold to bring up the cursor menu Use the menu to select the cursor features such as type source orientation lin
50. t to 10 1785 065 BRERESEEEE TTT TAT TT AVATI FARF ENRRRN Pty a ES A LIL WL BRRRE SA BRERESEEE 1785 120 1785 123 1785 124 Original waveform scaled horizontally Positioned horizontally Use the vertical controls to select waveforms adjust the waveform vertical position and scale and set input parameters Push a channel menu button 1 2 3 or 4 button as many times as needed and the associated menu items to select add or remove a waveform 000G 1785 119 1785 120 7 1785 121 1785 122 Original waveform Scaled vertically Positioned vertically MDO3000 Series Oscilloscopes User Manual Display Waveform or Trace Data Quick Tips Preview If you change the Position or Scale controls when the acquisition is stopped or when it is waiting for the next trigger the oscilloscope rescales and repositions the relevant waveforms in response to the new control settings It simulates what you will see when you next push the RUN button The oscilloscope uses the new settings for the next acquisition You may see a Clipped waveform if the original acquisition went off the screen The math waveform cursors and automatic measurements remain active and valid when using preview Setting Input Parameters Use the vertical controls to select waveforms adjust the waveform vertical position and scale and set input parameters 1 Push a channel menu button 1 2 3 or4to oJ Yo of Ko oy Qoy bring up the ve
51. the a a waveform on which to measure the Q histogram Use Autoset if appropriate E oE oj F he he he be LL _ CD e SeSpo ou 3249 009 Measure 2 Push Measure 3 Push Waveform Histograms on the lower menu 136 MDO3000 Series Oscilloscopes User Manual Use the Arbitrary Function Generator Use the Arbitrary Function Cenerator The MDO3000 contains an optional integrated arbitrary function generator AFG option MDO3AFG This is useful for simulating signals within a design or adding noise to signals to perform margin testing The function generator provides output of predefined waveforms up to 50 MHz Choose between sine square pulse ramp triangle DC noise sin x x Sinc Gaussian Lorentz exponential rise fall Haversine and cardiac signals The AFG can generate up to 131 072 points of an arbitrary waveform You can create the waveform from any of the four internal ARB memories the four or two analog channels the four or two reference waveforms the math waveform or the 16 digital channel waveforms You can also use a CSV spreadsheet file stored externally or a predefined template You can modify your arbitrary waveform via an on screen editor and then replicate it out of the generator For more involved waveform manipulation you can use Tektronix AroExpress PC based waveform creation and editing software It is available for free download from www tektronix com software Use v
52. ting confines the measurement to a certain portion of a waveform To use 1 Push Measure Measure G7 p Bs ii Fag Si o _ SES o om gB ar 0968 048 MDO3000 Series Oscilloscopes User Manual Analyze Waveform or Trace Data 2 Push More as many times as needed to Add lie Pals Indicators DVM Waveform i sur z i select Gating from the resulting pop up e Moa menu 3 Position the gates using the side menu options Between Cursors Statistics Statistics characterize the stability of measurements To adjust statistics 1 Push Measure Measure 2 Push More as many times as needed to l oe Indicators DVM Waveform select Statistics from the resulting pop up rent aie menu MDO3000 Series Oscilloscopes User Manual 127 Analyze Waveform or Trace Data 3 Push the side menu options These include sa whether to turn statistics on or off and how tistics many samples to use for mean and standard deviation calculations of Mean amp Std Dev Samples a Reset Statistics Snapshot To see all the single sourced measurements at one moment in time 1 Push Measure Measure 0968 048 2 Push Add Measurement Remove Indicators DVM Waveform surement ee His en tograms 3 Turn Multipurpose a to select the desired Source channel Multipurpose sa 1785 039 4 Turn Multipurpose b to select the Measurement Type of Snapshot
53. u can push this button to instruct the oscilloscope to perform an AC calibration on the entire signal path from the probe tip to the specific oscilloscope channel This can result in a flatter frequency response over the entire frequency range 11 Select Deskew to make display and measurement adjustments for probes that have differing propagation delays This is especially important when using a current probe in conjunction with a voltage probe For best results use a deskew fixture such as the Tektronix 067 1686 xx MDO3000 Series Oscilloscopes User Manual Display Waveform or Trace Data 109 Display Waveform or Trace Data If you do not have a deskew fixture you can use the controls in the Deskew menu to set the oscilloscope s deskew parameters to recommended values based on the nominal propagation delay of each probe The oscilloscope automatically loads the nominal propagation delay values of TekVPI and TekProbe II requires use of a TPA BNC adaptor probes For other common probes first push Select on the side menu and select the channel to which the probe is attached Then push Probe Model on the side menu and select the probe model If your probe is not in the list set probe model to Other and push Propagation Delay on the side menu and dial in its propagation delay with Multipurpose a To display the recommended deskew values calculated by the oscilloscope set Show rec deskews on the side menu to Yes To
54. uisition Use average mode to reduce random noise 1785 128 1785 130 old bel ld We al LL lol be 1785 131 Ald bel ld ell bod b pS LIL 1785 132 Changing the Acquisition Mode Record Length and Delay Time 62 Use this procedure to change the acquisition mode 1 Push Acquire 2 Push Mode MDO3000 Series Oscilloscopes User Manual Acquire the Signal 3 Then choose the acquisition mode from the ey ea side menu You can chose from Sample oe Peak Detect Hi Res Envelope or Average NOTE Peak Detect and Hi Res modes take advantage of sample points that the oscilloscope would have discarded at lower sweep speeds Therefore these modes only work when the current sample rate is less than the maximum possible sample rate As soon as the oscilloscope starts to acquire at the maximum sample rate then the Peak Detect Hi Res and Sample modes all look the same You can control the sample rate by setting the Horizontal scale and the Record Length 4 Ifyou chose Average turn Multipurpose a to set the number of waveforms to average OVE Multipurpose a 1785 039 5 Push Record Length 6 Scroll through the available choices Choose among 1000 10 k 100 k 1M 5 M and 10 M points MDO3000 Series Oscilloscopes User Manual 63 Acquire the Signal 7 Push Delay on the lower menu to select Acquired waveform On when you want to delay the acquisition E relative to the trigger event
55. ursors on push Select This turns the cursor linking on and off If linking is on turning Multipurpose a moves the two cursors together Turning Multipurpose b adjusts the time between the cursors 3 Push Fine to toggle between a coarse and a fine adjustment for the Multipurpose a and Multipurpose b knobs Pushing Fine also changes the sensitivity of 5 4 i i SSSR other knobs as well ee eso 4 Push and hold Cursors to display the cursor menu 5 Push Cursors on the lower menu to set the Cursors Source Bars UGA cursors to Screen Waveform Selected Horizontal On Screen Screen ei Vertical In screen mode two horizontal bars and two vertical bars span the graticule 6 Turn Multipurpose a and Multipurpose b to move the pair of horizontal cursors Multipurpose 1785 039 N Multipurpose 1785 160 MDO3000 Series Oscilloscopes User Manual 133 Analyze Waveform or Trace Data 7 Push Select This makes the vertical cursors active and the horizontal cursors inactive Now as you turn the multipurpose knobs the vertical cursors will move Push Select to make the horizontal cursors active again 8 View the cursor and the cursor readout WO 3 Navid aA NOTE On digital channels you can take timing measurements with cursors but not amplitude measurements 0968 055 9 Display multiple waveforms on the screen by pushing one or more of the chan
56. using either the min max or histogram method The min max method uses the minimum value found The histogram method uses the most common value found below the midpoint This value is measured over the entire waveform or gated region This is measured over the entire waveform or gated region and is expressed as Positive Overshoot Maximum High Amplitude x 100 This is measured over the entire waveform or gated region and is expressed as Negative Overshoot Low Minimum Amplitude x 100 This is the summation of the positive overshoot and the negative overshoot MDO3000 Series Oscilloscopes User Manual Analyze Waveform or Trace Data Amplitude measurements cont Measurement Description Mean we The arithmetic mean over the entire waveform or gated region Cycle Mean Pies The arithmetic mean over the first cycle in the waveform or the first cycle in the gated ie region RMS Se The true Root Mean Square voltage over the entire waveform or gated region ING Cycle RMS pe The true Root Mean Square voltage over the first cycle in the waveform or the first Tat cycle in the gated region RMS voltage Voltage peak to peak Zero volts Miscellaneous measurements Measurement Description Positive Pulse f The number of positive pulses that rise above the mid reference crossing in the waveform Count or gated region Negative Pulse f The number of negati
57. ve pulses that fall below the mid reference crossing in the waveform Count or gated region Rising Edge il il The number of positive transitions from the low reference value to the high reference Count value in the waveform or gated region g g Falling Edge The number of negative transitions from the high reference value to the low reference Count value in the waveform or gated region Area Area measurement is a voltage over time measurement It returns the area over the go entire waveform or gated region in volt seconds Area measured above ground is positive area measured below ground is negative Cycle Area m A voltage over time measurement The measurement is the area over the first cycle F in the waveform or the first cycle in the gated region expressed in volt seconds The area above the common reference point is positive and the area below the common reference point is negative MDO3000 Series Oscilloscopes User Manual 125 Analyze Waveform or Trace Data Histogram measurements Measurement Waveform Count Hits in Box Peak Hits Median Peak to peak Histogram Max Histogram Min Histogram Mean Standard Deviation Sigmat Sigma2 Sigma3 Description Displays the number of waveforms that contributed to the histogram Displays the number of samples within the histogram box or on its boundaries Displays the number of samples in the bin that contains the most hits Displays the middle histogram dat
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