MDO4000 Series Self Guided Tour
Contents
1. Domain Oscilloscope E l a Traditional Front Panel Oscilloscope Controls Traditional Time Domain Display Dedicated Froquency i ae Domain Display Controls Spectrum Analyzer Input N Type Connector MDO4000 Mixed Domain Oscilloscope How It Works The Mixed Domain Oscilloscope The MDO4000 is the world s first oscilloscope with an integrated spectrum analyzer When the spectrum analyzer is off the MDO works just like a traditional oscilloscope When only the spectrum analyzer is on the MDO works like a traditional spectrum analyzer When both are on you have the ultimate debug tool the only instrument in the world capable of providing time correlated views of analog digital and RF signals all in a single instrument CO Enable PLL Voltage Analog RF Digital J A V VVI awed j ee ne ee Oe N Time and Frequency Domains The real power of the MDO4000 comes from its universal trigger and acquisition system All channels are fully integrated so you can trigger on any of your signals and the oscilloscope will capture all channels simultaneously As a result all signals analog digital and RF are time correlated for accurate analysis Since the MDO4000 captures a long time period of your RF signal you can choose the precise spectrum you want to see at any point in time By simply moving Spectrum Time through your acquisition you can see how your RF spectru2. 00 Mixed Domain Oscilloscope Viewing RF Signals Over Time A spectrogram is a view of relative amplitudes in a spectrum as seen over time The spectrogram display provides an intuitive color map showing how your signal varies over time You can even go back and compare previously acquired data Objective See how a spectrogram can be used to monitor a slowly changing RF signal and view different spectrums within the spectrogram 1 Setting Up 2 Exploring Allow spectrogram to accumulate until Push the Mode button on the test board until the Spectrogram LED is lit half of the spectrogram display area is filled Press the Default Setup front panel Press Run Stop to stop acquiring button Press the Utility front panel button Press RF button Press Spectrogram Press Utility Page and select Demo using Multipurpose Turn Multipurpose to scroll through Spectrum Slices Press Spectrogram Press Recall Demo Setup Or enter desired Slice using keypad such as slice 55 Press Menu Off front panel button On Free Run Auto With the spectrogram view you can view how your RF signal is changing over time You can monitor only portions of the signal triggered or look at a wider range of signals free run For many designs spectrum analysis begins with signal visualization and spectrogram makes this task even easier 9 How Spectrograms are Generated 1 Spectrum A
3. EDs are lit 1 setup the Oscilloscope Attach Probes to the Scope Connect TPP1000 or TPP0500 passive probes to Channel 1 and Channel 2 inputs on the oscilloscope Connect the P6616 digital probe to the D15 D0 input on the oscilloscope 2 Insert USB cable here mm 4m Connect BNC cable here 9 Connect digital probe DO D1 and D2 here m Connect passive probe lt em tips here Connecting the Probes to Test Board 3 Connect Channel 1 probe tip to VCO 1 Enable loop connect Channel 2 probe tip to PLL 1 loop and both probe grounds to GND on the test board Connect Digital probe DO to SPL CLK D1 to SPI_SS 1 D2 to SPL_MOSI square pins on the test board Connect the N to BNC adapter to the RF input on the oscilloscope Connect the BNC cable to the N to BNC adapter Connect the other end of the cable to the RF Out BNC connector on the test board MDO4000 Mixed Domain Oscilloscope Basic Spectrum Analysis The MDO4000 is the world s first oscilloscope with an integrated spectrum analyzer When the need arises to view RF signals it is far simpler and faster to continue using the engineer s tool of choice the oscilloscope rather than finding and relearning a spectrum analyzer Objective See how simple it is to perform basic spectrum analysis on an MDO4000 1 Setting Up 2 Spectrum Analyzer 3 Basic Settings Controls Push the Mo
4. MDO4000 Series Self Guided Tour Select Fim Tektronix MDO4000 Mixed Domain Oscilloscope Self Guided Tour With this guide you will explore what you can do with the world s first oscilloscope with an integrated spectrum analyzer Applications range from simple frequency amplitude measurements of RF signals to time correlated acquisitions of analog digital and RF signals that provide you with a complete system view of your device under test P odede 43 Slate SPEE 2 Application What You Will Experience Basic Spectrum Analysis Configuring the MDO4000 to look at the spectrum of interest and 6 making basic spectral measurements Spectral Peak Identification Quick and easy spectral peak identification via the MDO4000 s 7 automatic and manual markers Viewing RF Signals Over Time Visualize slowly changing RF phenomena using Spectrograms 9 Viewing Complete System Activity Discover the MDO4000 s unique ability to acquire and show time 11 correlated analog digital and RF signals in a single view Debugging Amplitude Modulated View how amplitude of an Amplitude Shift Key ASK modulated 13 Signals signal changes over time Debugging Frequency Modulated Quickly visualize transient behavior of a frequency hopping signal 15 Signals Capturing Wideband Signals Capture and analyze both 900 MHz and 2 4 GHz signals in a single 17 acquisition _41 MDO4000 Mixed Domain Oscilloscope Tour of the World s First Mixed
5. al Current Probes TCP0020 TCP0030 TCP0150 50 MHz 20A AC DC TekVPI 120 MHz 30A AC DC TekVPI 20 MHz 150A AC DC TekVPI 19 Key Applications System level Troubleshooting Troubleshooting of Embedded RF Modules Troubleshooting of EMI Problems Troubleshooting of Power Distribution in Embedded Systems Benefits e See your time correlated analog digital and RF signals on a single display e Analyze the time and frequency domains with one instrument e Time correlate events such as timing relationship between RF module and serial control signal to understand the root cause of improper system behavior e Monitor multiple radio bands simultaneously to observe harmonic content and intra radio interference with gt 1 GHz capture bandwidth e Quickly determine amplitude and how often a signal is present with Spectrogram display e Trigger on the known EMI suspects such as power supplies clocks serial bus to directly measure and correlate frequency and time domain events e Isolate and correlate unintended power supply events to RF emissions e Monitor variations in switching power supplies and RF emissions caused by changing load conditions MDO4000 Mixed Domain Oscilloscope E Summary This concludes the MDO tour You have just experienced the world s first oscilloscope with an integrated spectrum analyzer This enables you to continue to use your tool of choice the oscillosco
6. arkers Y To Center anui Absolute Delta Thresholds Excursion Manual Markers Readouts Marker Options Press to turn markers on or off Use Multipurpose a to select maximum number of peak to be marked When Manual Markers are off then the Reference marker Wis placed on the highest amplitude peak When Manual Markers are on then the Reference Marker Wis attached to Multipu rpose control Press to quickly set the Center Frequency to the frequency of the Reference Marker 9 f you are only interested in marking peaks above a certain level then set the marker threshold to that level f spectrum is noisy and all markers are on non essential peaks then adjust the excursion value The excursion value is how far a signal amplitude needs to fall between marked peaks to be considered another valid peak Press to turn on two manual markers to use for measuring non peak areas of the spectrum Absolute Readouts are absolute frequency and absolute amplitude Delta Readouts indicates each peak s delta frequency and delta amplitude relative to the Reference Marker y Manual Markers have a third line of readout information For multipurpose a marker this indicates noise density For multipurpose marker this indicates noise density when readout is set to absolute when set to delta it indicates phase noise relative to multipurpose a marker MDO40
7. asily correlate frequency domain events with changes in the time domain signals D ASK Modulation Time Domain 10k points 1k points Frequency Domain 14 MDO4000 Mixed Domain Oscilloscope Debugging Frequency Modulated Signals Characterizing and correlating time varying RF events with analog signals can be difficult and time consuming With the right oscilloscope you can easily monitor system behavior with easy to use signal visualization tools Objective Explore how the RF Frequency vs Time trace allows you to quickly characterize time varying events of a frequency hopping signal such as how long it takes to settle to a new frequency 2 Exploring 1 Setting Up Press the Single front panel button to Move Channel 1 probe tip to the TRIGGER loop on the test board j i acquire a single acquisition Push the Mode button on the test board _ Use the front panel Wave Inspector Pan until the Frequency Hop LED is lit Press the Default Setup front panel button Press the Utility front panel button Press Utility Page and select Demo using Multipurpose Press Frequency Hop button Press Recall Demo Setup Press Menu Off front panel button knob outer ring to move the Spectrum Time indicator orange bar through the acquisition to see how the spectrum changes with the Frequency Modulation Notice the RF Frequency vs Time trace in the time domain graticule orange allows you
8. cquired 2 Color the spectrum trace to indicate amplitude at each point Cold colors blue green indicate lower amplitude Hot colors red yellow indicate higher amplitude l j Nay I oe hint Ries da M i d t r ih r A k T j nA A Anar IA eee f hual A i A if h hani Pai Hn Hy Ms ai it 3 Spectrum is flipped with the peaks pointing towards the viewer with the newest acquired spectrum added to the bottom of the stack 10 Oldest ii Slice Rt MDO4000 Series Spectrogram MDO4000 Series Spectrogram Slice GREE a oa ies ost i d ac tectlo Spectrum RE Versus f Spectrogram Spe Sei yop A a Edit Traces Time Traces on nggeres A Labels More i D d ree Run Auto p MDO4000 Mixed Domain Oscilloscope Viewing Complete System Activity Debugging modern wireless enabled designs often requires investigation of more than just the RF signal Understanding timing relationships between the RF and other analog digital or bus signals in the device under test is critical but incredibly difficult with multiple stand alone pieces of test equipment that weren t designed for the task Objective Experience the MDO4000 s unique ability to acquire and display time correlated analog digital and RF signals Verify that the oscilloscope and test Press the Single front panel button to arm board are setup as previously directed the scope for an acquisition Pu
9. d transient behavior 13 Explanation of Spectrum Time The spectrum shown in the frequency domain graticule corresponds to the period of time indicated by the orange bar in the time domain graticule This orange bar is known as Spectrum Time Spectrum Time can be moved throughout the acquisition to see how the spectrum changes over time or relative to other analog digital or bus signals What s Happening The ASK Amplitude Shift Key Modulation signal on Channel 1 is a digital modulation control signal that is turning the RF output on and off in order to transmit a 3 bit counter progressing through the numbers 0 7 The Bit Reference signal on Channel 2 is shown to aid in understanding the bit pattern on the modulation signal In each of the screenshots the position of Spectrum Time orange bar has been moved to view the spectrum at various points in time Iin Spectrum Time is positioned where the RF output has been on and stable for a while thus the view in the frequency domain is a stable signal at 2 4 GHZ in Spectrum Time is positioned at an off to on transition in the RF thus we see smearing in the frequency domain Similarly in Spectrum Time is positioned at an on to off transition in the RF thus we again see smearing in the frequency domain Note how you can quickly see how the RF signal amplitude changes over time and relative to other analog or digital control signals With the MDO4000 Series you can e
10. de button on the test Notice an entire section of the front Press Freq Span button board until the CW LED is lit panel is dedicated to spectrum Press Center Frequency Press the Default Setup front panel analyzer controls no buried menus CF bezel button button Most commonly performed functions Use keypad to set CF to 2 4 Press the Ch1 front panel button twice have front panel keys associated with GHz to turn off Ch1 them Press Span bezel button Press RF front panel button to turn on Setting center frequency span Use Multipurpose to set the spectrum analyzer Setting reference level span to 10 MHz 7 Setting resolution bandwidth Press Ampl button Ah AOV De man Using markers Use Multipurpose to set 10 digit keypad on front panel for Reference Level to 10dBm precision entry of specific values Notice spectral peak is automatically marked Summary The addition of a true RF acquisition system N connector dedicated spectrum analyzer controls and user interface make the MDO4000 Series the world s first oscilloscope with an integrated spectrum analyzer Now you can continue to use your tool of choice the oscilloscope for all your debugging needs regardless of time or frequency domain 6 MDO4000 Mixed Domain Oscilloscope i 7 Spectral Peak Identification Identifying peaks in your spectrum is one of the first steps to understanding the behavior of your desig
11. e on Ch 1 Notice that before the pulse the RF using Multipurpose Press Capture Bandwidth button output is at 900 MHz it then transitions to 2 4 GHz after the pulse Press Recall Demo Setup Press Menu Off front panel button Spectrum OF Triggered Summary With the MDO4000 Series you can see your whole spectrum of interest at any point in time with the up to 3 GHz ultra wide capture bandwidth approximately 100 times wider than the 10 40 MHz capture bandwidths of traditional spectrum analyzers Whether you re looking at multiband systems or ultra wide bandwidth designs you won t miss any details with the MDO4000 17 Explanation of Spectrum Time The spectrum shown in the frequency domain graticule corresponds to the period of time indicated by the orange bar in the time domain graticule This orange bar is known as Spectrum Time Spectrum Time can be moved throughout the acquisition to see how the spectrum changes over time or relative to other analog digital or bus signals What s Happening The pulse see on channel 1 is a control signal telling the device to switch the RF output from 900 MHz to 2 4 GHz We are capturing this transition in a single acquisition This ability to look across 3 GHz of spectrum and correlate the RF activity to other analog and digital signals is unique to the MDO4000 In screenshot Q Spectrum Time is positioned prior to the trigger event single pulse o
12. iews of amplitude vs time can make spectrum analysis an easier task Objective Discover how to quickly see the amplitude changes over time of an Amplitude Shift Key ASK modulated signal using the MDO4000 s RF Amplitude vs Time trace 1 Setting Up 2 Exploring Press the Single front panel button to Move Channel 1 probe tip to the ASK MOD loop move Channel 2 probe tip to acquire a single acquisition the TRIGGER loop on the test board a Use the front panel Wave Inspector Push the Mode button on the test board E Pan knob outer ring to move the until the ASK Modulation LED is lit Spectrum Time indicator orange bar Press the Default Setup front panel through the acquisition to see how the button spectrum changes with the ASK Press the Utility front panel button modulation Press Utility Page and select Demo Notice the RF Amplitude vs Time using Multipurpose trace in the time domain graticule Press ASK Modulation button orange allows you to quickly see Press Recall Demo Setup how the RF signal amplitude changes Press Menu Off front panel button over time and relative to other time domain signals Summary With a Mixed Domain Oscilloscope you can quickly investigate amplitude modulated RF signals The RF amplitude vs time trace shows the instantaneous amplitude of the acquired spectrum and can provide insight into such problems as noise interference issues an
13. ltage controlled oscillator is enabled when channel 1 goes high Next a command on the SPI bus tells the VCO PLL phase locked loop circuit the desired frequency which in this case is 2 4 GHz Once the SPI command has been transmitted the VCO PLL circuit begins tuning to the desired frequency In the screenshots below we ve made a single acquisition of this turn on event by triggering on the SPI command indicating the desired 2 4 GHz freq In screenshot ey the Spectrum Time orange bar is positioned prior to the VCO being enabled thus there is no activity in the spectrum yet In screenshot 2 the Spectrum Time orange bar has been moved via the Wave Inspector Pan knob to view the spectrum about midway through the VCO PLL s process of tuning to the desired frequency With the MDO4000 Series you can easily correlate frequency domain events with relevant time domain control signals enabling you to quickly and easily make critical timing measurements such as time to stability of a VCO PLL circuit Provu WY Spectrum Prior to Trigger Event Spectrum After the Trigger Event Stop 1 2VCO Enable PLL Voltage es PRMOSH ec ee FY Oe 40 ous 25 0MS78 10k points ID MOSI 12 MDO4000 Mixed Domain Oscilloscope Debugging Amplitude Modulated Signals Observing RF signal amplitude changes over time and monitoring system level interactions of analog and RF signals can be difficult and time consuming Time trend v
14. m is changing over time or device state MDO4000 Mixed Domain Oscilloscope Checklist for the Tour Before beginning the tour please be sure you have the following items Q MDO4000 Mixed Domain Oscilloscope L Power cord oro A i i 0 i G sf Cy 7 t LI Two 2 TPP1000 or TPP0500 passive probes with hook tips attached Q MDO Demo 1 board i ill LIP6616 digital probe with extension ground tips connected to DO D1 and D2 Extension ground tips can be found in the Logic Probe LJ USB cable Accessories Kit LJ BNC cable Q N to BNC adapter MDO4000 Mixed Domain Oscilloscope setting up for the Tour As with any test one of the first steps is to connect the instrument to the device under test For the initial exploration a test board has been provided to output signals needed for the tour After you ve completed the tour and have gained an understanding of how the MDO4000 operates please feel free to connect to your own system and see how the MDO can help in your day to day work and the Test Board Plug in and power on the oscilloscope Insert the 2 male B connectors of the USB cable into the 2 USB host ports on the rear panel of the oscilloscope Insert the 1 male A connector of the USB cable into the USB device port on the test board The board is on when the L
15. n Whether you are using the basic marker functions or analyzing noise density or phase noise easy to use tools are critical for saving time Objective Discover how the frequency and amplitude of peaks in the spectrum are quickly identified with automated peak markers Learn how manual markers can be used to measure non peak portions of the spectrum Push the Mode button on the test Use Multipurpose to set number of board until the Multiple Peaks LED is Peak Markers to 11 lit Press Threshold and use Multipurpose Press the Default Setup front panel to set threshold to 70 0 dBm button Notice that peaks meeting the criteria Press the Utility front panel button are indicated with Absolute Frequency Press Utility Page and select Demo and Amplitude Readouts using Multipurpose Press Readout to select Delta Press Multiple Peaks Notice peak readouts are now relative Press Recall Demo Setup ihe Reference Marker Press Markers front panel button Press Manual Markers Notice the Ref Marker can now be moved anywhere via manual markers Summary While performing spectrum analysis markers are an invaluable tool for easily quantifying peaks in a spectrum Simply define threshold and excursion values to automatically mark all peaks that meet your criteria Or user manual markers to investigate any non peak areas of the spectrum _7 MDO4000 Series Automatic Markers Peak M
16. n channel 1 In the spectrum the device under test is currently communicating to a device in the 900 MHz ISM Industrial Scientific and Medical radio band In screenshot Spectrum Time has been moved to view the spectrum after the trigger event In the spectrum the digital control signal the trigger event results in the RF output switching from communicating from one device in the 900 MHz ISM radio band to another device in the 2 4 GHz ISM radio band Notice that both the 900 MHz and 2 4 GHz ISM radios bands are captured in a single acquisition A typical spectrum analyzer with capture bandwidth of 10 40 MHz could not capture this wideband transitory event With the MDO4000 Series you can easily correlate frequency domain events with changes in the time domain signals Spectrum After the Trigger Event Y Provu W Spectrum Prior to Trigger Event f1 00Gs s_ LOGAS 10k points l 10k points 18 MDO4000 Mixed Domain Oscilloscope Specifications and Ordering Information Analog Analog Analog Digital Spectrum Analyzer Ch Bandwidth Sample Rate Ch Input Frequency Range Standard Probes and Accessories Four TPPO500 500 MHz models or TPP1000 1 GHz models Passive Voltage Probes One P6616 16 Channel Logic Probe N to BNC Adapter 103 0045 00 OpenChoice Desktop and NI LabVIEW SignalExpress TE LE version Software Calibration Certificate Quick Reference Manual amp D
17. ocumentation on CD Front Panel Cover Power Cord 3 year Warrant Application Modules Serial Bus Triggering and Protocol Analysis DPO4AERO DPO4AUDIO DPO4AUTO DPO4AUTOMAX DPO4COMP DPO4EMBD DPO4ENET DPO4USB Aerospace MIL STD 1553 Audio I S LJ RJ and TDM Automotive CAN LIN Automotive CAN LIN FlexRay Computer RS 232 422 485 Embedded I C SPI Ethernet 10BASE T 100BASE TX USB 2 0 LS FS HS Additional Analysis MDO4TRIG DPO4PWR DPO4LMT DPO4VID Adv RF Power Level Triggering Power Analysis Limit and Mask Testing HDTV amp Custom Video Triggering Recommended Probes and Accessories RF Accessories TPA N PRE TPA N VPI 119 4146 00 119 6609 00 Preamplifier 12 dB gain 9kHz 6 GHz N to TekVPI Adapter Near Field Probe Set 100 kHz 1 GHz Flexible Monopole Antenna Passive Voltage Probes TPP0502 TPP0850 500 MHz 2X 300V TekVPI Low C 12 7 pF 800 MHz 50X 2 5 kV TekVPI Single ended Active Voltage Probes TAP 1500 TAP2500 TAP3500 1 5 GHz 10X 8V TekVPI Single ended 2 5 GHz 10X 4V TekVPI Single ended 3 5 GHz 10X xxx TekVPI Single ended Voltage Probes 500 MHz 50X 5X 42V TekVPI Differential 1 GHz 50X 5X 42V TekVPI Differential 1 5 GHz 10X 1X 8V TekVPI Differential 3 5 GHz 5X 2V TekVPI Differential 100 MHz 1000X 100X 6kV TekVPI Differential 200 MHz 500X 50X 1 5kV TekVPI Differential 200 MHz 250X 25X 750V TekVPI Differenti
18. on thus we see RF energy smeared across more of the spectrum in the frequency domain view Note that you can quickly characterize time varying RF events such as how long it takes to settle to a new frequency or how much overshoot undershoot there is during a transition with RF vs time traces With the MDO4000 Series you can easily correlate frequency domain events with changes in the time domain signals IN A 10k points MDO4000 Mixed Domain Oscilloscope Capturing Wideband Signals _ E RF standards continue to evolve to wider bandwidths In addition many modern wireless devices transmit and receive over multiple bands Traditional spectrum analyzers do not have the capture bandwidth necessary to debug these systems Objective See the power of the MDO4000 s exceptionally wide capture bandwidth up to 3 GHz by capturing an RF device s transition from 900 MHz to 2 4 GHz in a single acquisition 2 Exploring 1 Setting Up Press the Single front panel button to Ensure the Channel 1 probe tip is on the TRIGGER loop on the test board Wa Push the Mode button on the test AE AAJA AP AUIBIRON board until the Capture BW LED is lit a a a a Ole Press the Default Setup front panel is 3 GHz capture bandwidth button Use the front panel Wave Inspector Press the Utility front panel button Pan knob outer ring to move the Press Utility Page and select Demo Spectrum Time indicator orange bar before and after the puls
19. pe to debug your designs regardless of whether you re tracking down time or frequency domain issues In addition the MDO4000 s unique capability of acquiring and displaying time correlated analog digital and RF in a single instrument makes it the ultimate debug tool for the modern design engineer Complete system visibility like this hasn t existed before now Are you ready to try this on your own design To learn more visit www tektronix com mdo4000 for detailed application notes videos and other materials For further product demonstrations or to request a quote please contact your local Tektronix authorized distributor 2013 Tektronix 48W 26883 2 90 Tektronix
20. sh the Mode button on the test Press the VCO 1 Enabled button on the board until the VCO PLL 1 Turn On a demo board The LED next to the button LED is lit should turn off Press the Default Setup front panel Press the VCO 1 Enabled button again button The LED next to the button should light and the scope should acquire data Use the front panel Wave Inspector Pan knob outer ring to move the Spectrum Time indicator orange bar through the acquisition to see how the spectrum changes during the VCO PLL turn on Press the Utility front panel button Press Utility Page and select Demo using Multipurpose Press VCO PLL Turn On button Press Recall Demo Setup Press Menu Off front panel button With a Mixed Domain Oscilloscope you can easily track down system level issues by viewing analog digital and RF signals time correlated on the same display By moving Spectrum Time throughout the waveform record you can quickly see how your RF signal changes relative to the time domain signals 11 Explanation of Spectrum Time The spectrum shown in the frequency domain graticule corresponds to the period of time indicated by the orange bar in the time domain graticule This orange bar is known as Spectrum Time Spectrum Time can be moved throughout the acquisition to see how the spectrum changes over time or relative to other analog digital or bus signals What s Happening The VCO vo
21. to quickly see how the RF signal frequency changes over time and relative to other time domain signals Spectrum OIF Triggered Auto Modern RF signals can vary significantly with time With a Mixed Domain Oscilloscope you can quickly characterize time varying RF events without having to look through the spectrum in the frequency domain view 15 Explanation of Spectrum Time The spectrum shown in the frequency domain graticule corresponds to the period of time indicated by the orange bar in the time domain graticule This orange bar is known as Spectrum Time Spectrum Time can be moved throughout the acquisition to see how the spectrum changes over time or relative to other analog digital or bus signals What s Happening The Trigger signal on Channel 1 is a digital control signal that initiates the frequency hopping cycle In each of the screenshots the position of the Spectrum Time orange bar has been moved to view the spectrum at various points in time after the trigger event In Spectrum Time is positioned in the middle of the second hop frequency thus the frequency domain view shows a single peak at 2 4 GHz In Spectrum Time is positioned in the transition from the 2 hop frequency to the 3 thus we see RF energy smeared across the spectrum in the frequency domain view In gt Spectrum Time is positioned in the transition from the 3 hop frequency back to the 13t This is a wider transiti
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