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Acquisition Control

12

Agilent InfiniiVision 4000 X-Series Oscilloscopes User's Guide

215

Overview of Sampling

To understand the oscilloscope's sampling and acquisition modes, it is
helpful to understand sampling theory, aliasing, oscilloscope bandwidth
and sample rate, oscilloscope rise time, oscilloscope bandwidth required,
and how memory depth affects sample rate.

Sampling Theory

The Nyquist sampling theorem states that for a limited bandwidth
(band- limited) signal with maximum frequency f

MAX

, the equally spaced

sampling frequency f

S

must be greater than twice the maximum frequency

f

MAX

, in order to have the signal be uniquely reconstructed without

aliasing.

f

MAX

= f

S

/2 = Nyquist frequency (f

N

) = folding frequency

Aliasing

Aliasing occurs when signals are under- sampled (f

S

< 2f

MAX

). Aliasing is

the signal distortion caused by low frequencies falsely reconstructed from
an insufficient number of sample points.

Figure 34

Aliasing

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Содержание DSO-X 4022A

Страница 1: ...s1 Agilent InfiniiVision 4000 X Series Oscilloscopes User s Guide...

Страница 2: ...ance with the terms of such license Restricted Rights Legend If software is for use in the performance of a U S Government prime contract or subcon tract Software is delivered and licensed as Commerci...

Страница 3: ...5 GHz Sample Rate interleaved non interleaved 5 GSa s 2 5 GSa s 5 GSa s 2 5 GSa s 5 GSa s 2 5 GSa s 5 GSa s 2 5 GSa s 5 GSa s 2 5 GSa s 2 Channel 16 Logic Channels MSO MSO X 4022A MSO X 4032A MSO X 4...

Страница 4: ...up Zone triggers You can touch the blue menu icon in the sidebar to display information or control dialogs You can drag undock these dialogs out of the sidebar for example to view cursor values and m...

Страница 5: ...ise exponential fall cardiac and Gaussian pulse Modulated waveforms on WaveGen1 except for arbitrary pulse DC and noise waveforms USB and LAN ports make printing saving and sharing data easy VGA port...

Страница 6: ...ing on page 157 When setting up triggers or changing how data is acquired see Chapter 10 Triggers starting on page 165 Chapter 11 Trigger Mode Coupling starting on page 205 Chapter 12 Acquisition Cont...

Страница 7: ...starting on page 435 Chapter 27 MIL STD 1553 ARINC 429 Triggering and Serial Decode starting on page 445 Chapter 28 UART RS232 Triggering and Serial Decode starting on page 461 Chapter 29 USB 2 0 Tri...

Страница 8: ...8 Agilent InfiniiVision 4000 X Series Oscilloscopes User s Guide...

Страница 9: ...t voltage at analog inputs 32 Do not float the oscilloscope chassis 32 Input a Waveform 32 Recall the Default Oscilloscope Setup 33 Use Auto Scale 33 Compensate Passive Probes 35 Learn the Front Panel...

Страница 10: ...Change the Trigger Mode and Open the Trigger Level Dialog 55 Use a USB Mouse and or Keyboard for Touchscreen Controls 56 Learn the Rear Panel Connectors 56 Learn the Oscilloscope Display 58 Access th...

Страница 11: ...cify channel coupling 82 To specify channel input impedance 83 To specify bandwidth limiting 83 To change the vertical scale knob s coarse fine adjustment setting 84 To invert a waveform 84 Setting An...

Страница 12: ...110 High Pass and Low Pass Filter 111 Averaged Value 112 Math Visualizations 112 Magnify 112 Measurement Trend 113 Chart Logic Bus Timing 115 Chart Logic Bus State 116 5 Reference Waveforms To save a...

Страница 13: ...hannels 130 To switch a single channel on or off 130 To switch all digital channels on or off 130 To switch groups of channels on or off 130 To change the logic threshold for digital channels 131 To r...

Страница 14: ...display on or off 157 To assign a predefined label to a channel 158 To define a new label 159 To load a list of labels from a text file you create 160 To reset the label library to the factory default...

Страница 15: ...even fields 197 Serial Trigger 200 Zone Qualified Trigger 201 11 Trigger Mode Coupling To select the Auto or Normal trigger mode 206 To select the trigger coupling 208 To enable or disable trigger no...

Страница 16: ...5 Realtime Sampling Option 226 Realtime Sampling and Oscilloscope Bandwidth 227 Acquiring to Segmented Memory 228 Navigating Segments 229 Measurements Statistics and Infinite Persistence with Segmente...

Страница 17: ...equency 256 Counter 257 Width 258 Width 258 Burst Width 258 Duty Cycle 258 Rise Time 259 Fall Time 259 Delay 259 Phase 260 X at Min Y 262 X at Max Y 262 Count Measurements 263 Positive Pulse Count 263...

Страница 18: ...eforms 291 Creating New Arbitrary Waveforms 293 Editing Existing Arbitrary Waveforms 294 Capturing Other Waveforms to the Arbitrary Waveform 299 To output the waveform generator sync pulse 299 To spec...

Страница 19: ...trary waveforms 316 To navigate storage locations 317 To enter file names 317 Recalling Setups Masks or Data 318 To recall setup files 319 To recall mask files 319 To recall reference waveform files f...

Страница 20: ...nel TRIG OUT Source 339 Setting the Reference Signal Mode 339 To supply a sample clock to the oscilloscope 340 Maximum input voltage at 10 MHz REF connector 340 To synchronize the timebase of two or m...

Страница 21: ...g Files via the Web Interface 358 Get Image 359 Identification Function 360 Instrument Utilities 360 Setting a Password 363 22 Reference Specifications and Characteristics 367 Measurement Category 367...

Страница 22: ...e Program for Reading Binary Data 381 Examples of Binary Files 381 CSV and ASCII XY files 384 CSV and ASCII XY file structure 385 Minimum and Maximum Values in CSV Files 385 Acknowledgements 386 23 CA...

Страница 23: ...de 410 FlexRay Totalizer 411 Interpreting FlexRay Lister Data 412 Searching for FlexRay Data in the Lister 413 25 I2C SPI Triggering and Serial Decode Setup for I2C Signals 415 I2C Triggering 416 I2C...

Страница 24: ...terpreting MIL STD 1553 Lister Data 450 Searching for MIL STD 1553 Data in the Lister 451 Setup for ARINC 429 Signals 452 ARINC 429 Triggering 453 ARINC 429 Serial Decode 455 Interpreting ARINC 429 De...

Страница 25: ...er s Guide 25 29 USB 2 0 Triggering and Serial Decode Setup for USB 2 0 Signals 471 USB 2 0 Triggering 473 USB 2 0 Serial Decode 475 Interpreting USB 2 0 Decode 476 Interpreting USB 2 0 Lister Data 47...

Страница 26: ...26 Agilent InfiniiVision 4000 X Series Oscilloscopes User s Guide...

Страница 27: ...Controls and Connectors 36 Learn the Touchscreen Controls 45 Learn the Rear Panel Connectors 56 Learn the Oscilloscope Display 58 Access the Built In Quick Help 60 This chapter describes the steps you...

Страница 28: ...d the following items and any optional accessories you may have ordered InfiniiVision 4000 X Series oscilloscope Power cord country of origin determines specific type Oscilloscope probes Two probes fo...

Страница 29: ...ries oscilloscope Power cord Based on country of origin Documentation CD Digital Probe Kit MSO models only N6450 60001 Digital Probe Kit contains N6450 61601 16 channel cable qyt 1 01650 82103 2 inch...

Страница 30: ...he oscilloscope The foot will lock into place 2 Repeat for the other foot 3 Rock the oscilloscope back so that it rests securely on its feet To retract the feet 1 Tilt the oscilloscope forward Press t...

Страница 31: ...o the rear of the oscilloscope then to a suitable AC voltage source Route the power cord so the oscilloscope s feet and legs do not pinch the cord 2 The oscilloscope automatically adjusts for input li...

Страница 32: ...pending on the time constant of the signal The 50 input protection only functions when the oscilloscope is powered on With 10073C 10 1 probe CAT I 500 Vpk CAT II 400 Vpk With N2871A N2872A N2873A 10 1...

Страница 33: ...cale to automatically configure the oscilloscope to best display the input signals 1 Press Auto Scale You should see a waveform on the oscilloscope s display similar to this Table 2 Default Configurat...

Страница 34: ...e softkeys that appear in the AutoScale Preferences Menu See To set AutoScale preferences on page 337 If you see the waveform but the square wave is not shaped correctly as shown above perform the pro...

Страница 35: ...ge Compensate Passive Probes Each oscilloscope passive probe must be compensated to match the input characteristics of the oscilloscope channel to which it is connected A poorly compensated probe can...

Страница 36: ...earn the Front Panel Controls and Connectors On the front panel key refers to any key button you can press Softkey specifically refers to the six keys that are directly below the display The legend fo...

Страница 37: ...on press again to switch power off See Power On the Oscilloscope on page 30 2 Softkeys The functions of these keys change based upon the menus shown on the display directly above the keys The Back Up...

Страница 38: ...ing Measurement threshold setting Video trigger automatic set up and display Mask testing see Chapter 15 Mask Testing starting on page 271 The DSOX4PWR power measurement and analysis application Digit...

Страница 39: ...adjustment and select the trigger time reference point Zoom key Press the zoom key to split the oscilloscope display into Normal and Zoom sections without opening the Horizontal Menu Search key Lets y...

Страница 40: ...l channels and the lower multiplexed knob positions the selected digital channel If a trace is repositioned over an existing trace the indicator at the left edge of the trace will change from Dnn desi...

Страница 41: ...rint key opens the Print Configuration Menu so you can print the displayed waveforms See Chapter 19 Print Screens starting on page 323 14 Tools keys The Tools keys consist of Utility key Press this ke...

Страница 42: ...X Series oscilloscopes you can set the input impedance of the analog channels to either 50 or 1 M See To specify channel input impedance on page 83 The InfiniiVision 4000 X Series oscilloscopes also...

Страница 43: ...oscilloscope s system software when updates are available You do not need to take special precautions before removing the USB mass storage device from the oscilloscope you do not need to eject it Simp...

Страница 44: ...part numbers Language 2 Channel Overlay 4 Channel Overlay French 54709 94315 54709 94316 German 54709 94313 54709 94314 Italian 54709 94317 54709 94318 Japanese 54709 94321 54709 94322 Korean 54709 94...

Страница 45: ...Dialogs on page 49 Drag Cursors on page 49 Touch Softkeys and Menus On the Screen on page 49 Enter Names Using Alpha Numeric Keypad Dialogs on page 50 Change Waveform Offsets By Dragging Ground Refer...

Страница 46: ...Started 2 Drag your finger across the screen to draw a rectangle 3 Take your finger off the screen 4 Touch the desired option from the popup menu Drag Waveforms Left and Right to Change the Horizontal...

Страница 47: ...opes User s Guide 47 2 Drag your finger across the screen to change the horizontal delay Select Sidebar Information or Controls 1 Touch the blue menu icon in the sidebar 2 In the popup menu touch the...

Страница 48: ...r s Guide 1 Getting Started Undock Sidebar Dialogs by Dragging Sidebar dialogs can be undocked and placed anywhere on the screen 1 Drag the sidebar dialog title wherever you like This lets you view mu...

Страница 49: ...Dialog Menus and Close Dialogs Touch the blue menu icon in the dialog for options Touch the red X icon to close a dialog Drag Cursors When cursors are displayed you can drag the name handles to positi...

Страница 50: ...the same as pressing the softkey keys When softkeys provide menus double touch to select a menu item This may be an easier than selecting a menu item via the Entry knob Enter Names Using Alpha Numeri...

Страница 51: ...ing Started 1 Agilent InfiniiVision 4000 X Series Oscilloscopes User s Guide 51 Change Waveform Offsets By Dragging Ground Reference Icons You can drag ground icons to change a waveform s vertical off...

Страница 52: ...n 4000 X Series Oscilloscopes User s Guide 1 Getting Started Access Controls and Menus Via the Spark Icon 1 Touch the upper left spark icon to open the main menu 2 Touch left side controls to perform...

Страница 53: ...Getting Started 1 Agilent InfiniiVision 4000 X Series Oscilloscopes User s Guide 53 3 Touch menu items and submenu items to access menus and additional controls...

Страница 54: ...t Dialogs Touch channel numbers to turn them on or off When channels are on touch the scale and offset values to access a dialog for changing them Access the Horizontal Menu and Open the Scale Delay D...

Страница 55: ...s User s Guide 55 Access the Trigger Menu Change the Trigger Mode and Open the Trigger Level Dialog Touch T to access the Trigger Menu Touch the trigger level value s to access a dialog for changing t...

Страница 56: ...ecting a USB mouse gives you a mouse pointer on the display Mouse clicks and drags behave the same as screen touches and finger drags If you connect a USB keyboard you can use it to enter values in al...

Страница 57: ...connector See Setting the Rear Panel TRIG OUT Source on page 339 4 10 MHz REF connector For synchronizing the timebase of multiple instruments See Setting the Reference Signal Mode on page 339 5 Calib...

Страница 58: ...cted The video output connector is always active For optimal video quality and performance we recommend you use a shielded video cable with ferrite cores 8 USB Host port This port functions identicall...

Страница 59: ...fferent color Signal detail is displayed using 256 levels of intensity For more information about viewing signal detail see To adjust waveform intensity on page 149 For more information about display...

Страница 60: ...n and other control dialogs For more information see Select Sidebar Information or Controls on page 47 Undock Sidebar Dialogs by Dragging on page 48 Menu line This line normally contains menu name or...

Страница 61: ...k Help language 1 Press Help then press the Language softkey 2 Repeatedly press and release the Language softkey or rotate the Entry knob until the desired language is selected The following languages...

Страница 62: ...62 Agilent InfiniiVision 4000 X Series Oscilloscopes User s Guide 1 Getting Started...

Страница 63: ...center right 73 Searching for Events 74 Navigating the Time Base 75 The horizontal controls include The horizontal scale and position knobs The Horiz key for accessing the Horizontal Menu The zoom ke...

Страница 64: ...able Zoom set the time base fine control vernier and specify the time reference The current sample rate is displayed in the right side information area Figure 2 Horizontal Menu Trigger point Sample ra...

Страница 65: ...ontal scale knob lets you zoom into acquired data See Panning and Zooming Single or Stopped Acquisitions on page 66 Note that the horizontal scale knob has a different purpose in the Zoom display See...

Страница 66: ...lets you zoom into acquired data See Panning and Zooming Single or Stopped Acquisitions on page 66 Note that the horizontal position knob has a different purpose in the Zoom display See To display th...

Страница 67: ...gnal events after the trigger plotted to the right of the trigger point XY XY mode changes the display from a volts versus time display to a volts versus volts display The time base is turned off Chan...

Страница 68: ...allows the waveform to roll across the display XY Time Mode The XY time mode converts the oscilloscope from a volts versus time display to a volts versus volts display using two input channels Channel...

Страница 69: ...e Y value at the bottom of the display In this example we are using the Y cursors but you could have used the X cursors instead 6 Move the Y1 and Y2 cursors to the intersection of the signal and the Y...

Страница 70: ...ntal Controls 7 Calculate the phase difference using the formula below For example if the first Y value is 2 297 and the second Y value is 1 319 Figure 4 Phase difference measurements automatic and us...

Страница 71: ...ontally expand part of the normal window for a more detailed higher resolution analysis of signals To turn on or off Zoom 1 Press the zoom key or press the Horiz key and then the Zoom softkey NOTE Z A...

Страница 72: ...tatus line above the waveform display area The Horizontal scale sweep speed knob controls the size of the box The Horizontal position delay time knob sets the left to right position of the zoom window...

Страница 73: ...When Fine is enabled turning the horizontal scale knob changes the time div displayed in the status line at the top of the display in smaller increments The time div remains fully calibrated when Fin...

Страница 74: ...Rise Fall Time Runt and Serial events on the analog channels Setting up searches see To set up searches on page 74 is similar to setting up triggers In fact except for Serial events you can copy searc...

Страница 75: ...t search setups you can copy search setups to trigger setups and vice versa 1 Press Search 2 In the Search Menu press Search then turn the Entry knob to select the search type 3 Press Copy 4 In the Se...

Страница 76: ...on keys to play backward stop or play forward in time You can press the or keys multiple times to speed up the playback There are three speed levels You can also access navigation controls on the touc...

Страница 77: ...1 Press Navigate 2 In the Navigate Menu press Navigate then select Segments 3 Press Play Mode then select Manual to play through segments manually In the Manual play mode Press the back and forward k...

Страница 78: ...78 Agilent InfiniiVision 4000 X Series Oscilloscopes User s Guide 2 Horizontal Controls...

Страница 79: ...change the vertical scale knob s coarse fine adjustment setting 84 To invert a waveform 84 Setting Analog Channel Probe Options 85 The vertical controls include The vertical scale and position knobs f...

Страница 80: ...de of the display To turn waveforms on or off channel or math 1 Press an analog channel key turn the channel on or off and to display the channel s menu When a channel is on its key is illuminated You...

Страница 81: ...he signal when you turn the volts division knob is vertical expansion about the ground level of the channel however you can change this to expand about the center of the display See To choose expand a...

Страница 82: ...ing DC DC coupling is useful for viewing waveforms as low as 0 Hz that do not have large DC offsets AC AC coupling is useful for viewing waveforms with large DC offsets When AC coupling is chosen you...

Страница 83: ...probes and for general purpose measurements The higher impedance minimizes the loading effect of the oscilloscope on the device under test This impedance matching gives you the most accurate measureme...

Страница 84: ...Off and Open Scale Offset Dialogs on page 54 When Fine adjustment is selected you can change the channel s vertical sensitivity in smaller increments The channel sensitivity remains fully calibrated w...

Страница 85: ...gh the process of compensating probes For some active probes such as InfiniiMax probes the oscilloscope can accurately calibrate its analog channels for the probe When you connect a probe that can be...

Страница 86: ...knob to set the attenuation factor for the connected probe When measuring voltage values the attenuation factor can be set from 0 1 1 to 10000 1 in a 1 2 5 sequence When measuring current values with...

Страница 87: ...First plug your probe into one of the oscilloscope channels This could be for example an InfiniiMax probe amplifier probe head with attenuators attached 2 Connect the probe to the left side Demo 2 Pro...

Страница 88: ...6 dB Atten single ended browser 10 1 6 dB Atten differential browser 10 1 12 dB Atten single ended browser 10 1 12 dB Atten differential browser 10 1 20 dB Atten single ended browser 10 1 20 dB Atten...

Страница 89: ...e math function waveform can be displayed at a time The math function waveform is displayed in light purple Math functions can be performed on analog channels or they can be performed on lower math fu...

Страница 90: ...operate on lower math functions when using operators other than the simple arithmetic operations For example if Math 1 is set up as a subtract operation between channels 1 and 2 the Math 2 function co...

Страница 91: ...ction waveforms are TIP Math Operating Hints If the analog channel or math function is clipped not fully displayed on screen the resulting displayed math function will also be clipped Once the functio...

Страница 92: ...ubtracted point by point and the result is displayed You can use subtract to make a differential measurement or to compare two waveforms Math function Units add or subtract V or A multiply V2 A2 or W...

Страница 93: ...s for Math Waveforms on page 91 Multiply or Divide When you select the multiply or divide math function the Source 1 and Source 2 values are multiplied or divided point by point and the result is disp...

Страница 94: ...sforms Math transforms perform a transform function like differentiate integrate FFT or square root on an analog input channel or on the result of an arithmetic operation Differentiate on page 95 Inte...

Страница 95: ...antaneous slope of a waveform For example the slew rate of an operational amplifier may be measured using the differentiate function Because differentiation is very sensitive to noise it is helpful to...

Страница 96: ...1 Integrate dt integrate calculates the integral of the selected source You can use integrate to calculate the energy of a pulse in volt seconds or measure the area under a waveform dt plots the integ...

Страница 97: ...point index The integrate operator provides an Offset softkey that lets you enter a DC offset correction factor for the input signal Small DC offset in the integrate function input or even small osci...

Страница 98: ...e frequency domain When the FFT function is selected the FFT spectrum is plotted on the oscilloscope display as magnitude in dBV versus frequency The readout for the horizontal axis changes from time...

Страница 99: ...the whole screen Press the Span softkey then turn the Entry knob to set the desired frequency span of the display Center sets the FFT spectrum frequency represented at the center vertical grid line o...

Страница 100: ...Span and Center to values that will cause the entire available spectrum to be displayed The maximum available frequency is half the FFT sample rate which is a function of the time per division settin...

Страница 101: ...ou can make peak to peak maximum minimum and average dB measurements on the FFT waveform You can also find the frequency value at the first occurrence of the waveform maximum by using the X at Max Y m...

Страница 102: ...functions and frequency domain controls in FFT Menu Decreasing the effective sampling rate by selecting a greater time div setting will increase the low frequency resolution of the FFT display and al...

Страница 103: ...Network Measurements by Robert A Witte FFT Units 0 dBV is the amplitude of a 1 Vrms sinusoid When the FFT source is channel 1 or channel 2 or channel 3 or 4 on 4 channel models FFT units will be disp...

Страница 104: ...Hz square wave which has many harmonics The horizontal time div setting for the square wave sets the sample rate and results in a FFT resolution of 1 91 Hz The displayed FFT spectrum waveform shows t...

Страница 105: ...Unless there is an integral number of cycles of the sampled waveform in the record a discontinuity is created at the end of the record This is referred to as leakage In order to minimize spectral lea...

Страница 106: ...ulates the square root of the selected source Where the transform is undefined for a particular input holes zero values appear in the function output See Also Units for Math Waveforms on page 91 Ax B...

Страница 107: ...he Ax B function differs from the Magnify math visualization function in that the output is likely different than the input See Also Magnify on page 112 Square The square function calculates the squar...

Страница 108: ...nput to positive values and displays the resulting waveform See Also Square on page 107 Common Logarithm The Common Logarithm log function performs a transform of the input source Where the transform...

Страница 109: ...orms a transform of the input source Where the transform is undefined for a particular input holes zero values appear in the function output See Also Common Logarithm on page 108 Exponential The Expon...

Страница 110: ...transform of the input source See Also Exponential on page 109 Math Filters You can use math filters to create a waveform that is the result of a high or low pass filter on an analog input channel or...

Страница 111: ...eform The high pass filter is a single pole high pass filter The low pass filter is a 4th order Bessel Thompson filter Use the Bandwidth softkey to select the filter s 3 dB cutoff frequency NOTE The r...

Страница 112: ...number of averages on all waveforms and an increased number of averages on a particular waveform As with acquisition averaging averages are calculated using a decaying average approximation where nex...

Страница 113: ...106 Measurement Trend The measurement trend math function shows measurement values for a waveform based on measurement threshold settings as the waveform progresses across the screen For every cycle...

Страница 114: ...4 Math Waveforms Use the Type softkey to select the measurement whose trend you want to look at You can display trend values for these measurements Average RMS AC Ratio Period Frequency Width Width Du...

Страница 115: ...e trend function output is a hole that is no value until a measurement can be made Chart Logic Bus Timing The Chart Logic Bus Timing function displays bus data values as an analog waveform like a D A...

Страница 116: ...e of values the bus data represents volts amps etc See Also Chart Logic Bus State on page 116 Chart Logic Bus State The Chart Logic Bus State function displays bus data values sampled on a clock signa...

Страница 117: ...of a zero bus value and the type of values the charted bus data represents volts amps etc Use the Units Code softkey to specify the analog value equivalent of each increment in the bus data value Use...

Страница 118: ...118 Agilent InfiniiVision 4000 X Series Oscilloscopes User s Guide 4 Math Waveforms...

Страница 119: ...t other waveforms One reference waveform can be displayed at a time When the multiplexed knobs are assigned to reference waveforms this happens when you press the Ref key and the LED to the left of it...

Страница 120: ...the Ref key to turn on reference waveforms 2 In the Reference Waveform Menu press the Ref softkey and turn the Entry knob to select the desired reference waveform location 3 Press the Clear R1 R2 R3 R...

Страница 121: ...option is available in your oscilloscope See Also To display reference waveform information on page 122 To scale and position reference waveforms 1 Make sure the multiplexed scale and position knobs...

Страница 122: ...ms 2 In the Reference Waveform Menu press the Options softkey 3 In the Reference Waveform Options Menu press the Display Info softkey to enable or disable reference waveform information on the oscillo...

Страница 123: ...nge the displayed size of the digital channels 130 To reposition a digital channel 131 To change the logic threshold for digital channels 131 To display digital channels as a bus 132 Digital channel s...

Страница 124: ...al probe cable to the DIGITAL Dn D0 connector on the mixed signal oscilloscope The digital probe cable is keyed so you can connect it only one way You do not need to power off the oscilloscope 3 Conne...

Страница 125: ...Series Oscilloscopes User s Guide 125 4 Connect a grabber to one of the probe leads Other probe leads are omitted from the figure for clarity 5 Connect the grabber to a node in the circuit you want to...

Страница 126: ...Channels 6 For high speed signals connect a ground lead to the probe lead connect a grabber to the ground lead and attach the grabber to ground in the device under test 7 Repeat these steps until you...

Страница 127: ...ggers and displays the acquisition For digital channels each time the oscilloscope takes a sample it compares the input voltage to the logic threshold If the voltage is above the threshold the oscillo...

Страница 128: ...cale press the Undo AutoScale softkey before pressing any other key This is useful if you have unintentionally pressed the AutoScale key or do not like the settings AutoScale has selected This will re...

Страница 129: ...n any digital channels are turned on an activity indicator is displayed in the status line at the bottom of the display A digital channel can be always high always low or actively toggling logic state...

Страница 130: ...pup menu to switch the selected channel on or off To switch all digital channels on or off 1 Press the Digital key to toggle the display of digital channels The Digital Channel Menu is displayed above...

Страница 131: ...threshold are high 1 and values less than the set threshold are low 0 If the Thresholds softkey is set to User press the User softkey for the channel group then turn the Entry knob to set the logic th...

Страница 132: ...ess the Bus softkey Next select a bus Rotate the Entry knob then press the Entry knob or the Bus1 Bus2 softkey to switch it on Use the Channel softkey and the Entry knob to select individual channels...

Страница 133: ...s To read the digital bus value at any point using the cursors 1 Turn on Cursors by pressing the Cursors key on the front panel 2 Press the cursor Mode softkey and change the mode to Hex or Binary 3 P...

Страница 134: ...softkeys The dollar sign will be displayed in the bus value when the bus value cannot be displayed as a hex value This occurs when one or more don t cares X are combined with low 0 and high 1 logic le...

Страница 135: ...ms that are related to probing These problems fall into two categories probe loading and probe grounding Probe loading problems generally affect the device under test while probe grounding problems af...

Страница 136: ...he input resistance of the test instrument see the following figure The capacitance is the series combination of the tip compensating capacitor and the cable plus instrument capacitance in parallel wi...

Страница 137: ...own in these figures By comparing the two plots you can see that both the series tip resistor and the cable s characteristic impedance extend the input impedance significantly The stray tip capacitanc...

Страница 138: ...es the maximum input impedance at high frequencies Probe Grounding A probe ground is the low impedance path for current to return to the source from the probe Increased length in this path will at hig...

Страница 139: ...sult is increased current di in the above equation and depending on the transition time dt the common mode voltage may increase to a level that causes false data generation In addition to the common m...

Страница 140: ...ments rise time 3 ns should make use of each digital channel probe s own ground When designing a high speed digital system you should consider designing dedicated test ports that interface directly to...

Страница 141: ...450 60001 Digital probe kit contains N6450 61601 16 channel cable 01650 82103 2 inch probe grounds qty 5 and 5090 4832 grabbers qty 20 N6450 61601 16 channel cable with 16 probe leads and 2 pod ground...

Страница 142: ...142 Agilent InfiniiVision 4000 X Series Oscilloscopes User s Guide 6 Digital Channels...

Страница 143: ...ger mode by pressing the Mode Coupling key then the Mode softkey Also the threshold voltage level must be set appropriately for each source channel The threshold level for each serial signal can be se...

Страница 144: ...try knob to select an event and press the Zoom to Selection softkey to jump to the event To use the Lister DSOX4FLEX you can decode FlexRay serial buses FlexRay Serial Decode on page 409 DSOX4EMBD you...

Страница 145: ...h the Lister down or up chevrons at the top right of the graticule to select the size of the Lister window 4 Press Display then turn the Entry knob to select the serial slot Serial 1 or Serial 2 on wh...

Страница 146: ...e associated with the selected Lister row and automatically set the horizontal scale setting 8 Press the Undo Zoom softkey to return to the horizontal scale and delay settings before the last Zoom to...

Страница 147: ...or ARINC 429 Data in the Lister on page 460 Searching for CAN Data in the Lister on page 395 Searching for FlexRay Data in the Lister on page 413 Searching for I2C Data in the Lister on page 423 Searc...

Страница 148: ...148 Agilent InfiniiVision 4000 X Series Oscilloscopes User s Guide 7 Serial Decode...

Страница 149: ...waveforms to account for various signal characteristics such as fast time div settings and low trigger rates Increasing the intensity lets you see the maximum amount of noise and infrequently occurrin...

Страница 150: ...150 Agilent InfiniiVision 4000 X Series Oscilloscopes User s Guide 8 Display Settings Figure 26 Amplitude Modulation Shown at 100 Intensity...

Страница 151: ...not immediately erase the results of previous acquisitions All previous acquisitions are displayed with reduced intensity New acquisitions are shown in their normal color with normal intensity Wavefor...

Страница 152: ...sitions are erased after a certain amount of time Variable persistence gives you a view of acquired data that is similar to analog oscilloscopes When variable persistence is selected press the Time so...

Страница 153: ...on the left from 0 3 V to 0 8 V IRE Institute of Radio Engineers shows vertical grids in IRE units labeled on the left from 40 to 100 IRE The 0 35 V and 0 7 V levels from the mV grid are also shown a...

Страница 154: ...is mode produces the most insightful waveforms for most situations On the 1 GHz and 1 5 GHz bandwidth models you can disable vectors to view just waveform data points To disable or re enable vectors 1...

Страница 155: ...worth of information To freeze the display To freeze the display without stopping running acquisitions you must configure the Quick Action key See Configuring the Quick Action Key on page 347 1 Once...

Страница 156: ...156 Agilent InfiniiVision 4000 X Series Oscilloscopes User s Guide 8 Display Settings...

Страница 157: ...default 161 To add an annotation 162 You can define labels and assign them to each analog input channel or you can turn labels off to increase the waveform display area Labels can also be applied to d...

Страница 158: ...ide 9 Labels 2 To turn the labels off press the Label key again To assign a predefined label to a channel 1 Press the Label key 2 Press the Channel softkey then turn the Entry knob or successively pre...

Страница 159: ...n turn the Entry knob or successively press the Library softkey to select a predefined label from the library 4 Press the Apply New Label softkey to assign the label to your selected channel 5 Repeat...

Страница 160: ...e nonvolatile label list Label Assignment Auto Increment When you assign a label ending in a digit such as ADDR0 or DATA0 the oscilloscope automatically increments the digit and displays the modified...

Страница 161: ...igits As long as the base string is the same as an existing label in the library the new label will not be put in the library For example if label A0 is in the library and you make a new label called...

Страница 162: ...ss Label 2 In the label menu press Annotation 3 In the Annotation Menu press Annotation to enable the annotation When enabled you can drag the annotation anywhere in the graticule using the touchscree...

Страница 163: ...ng on the screen that can be touched 6 When you are done entering text select the dialog s Enter or OK key or press the Edit Annotation softkey again The annotation text appears in the softkey 7 Press...

Страница 164: ...s Opaque the annotation has a solid background Inverted the annotation s foreground and background colors are switched Transparent the annotation has a transparent background See Also To save BMP or P...

Страница 165: ...igger setup tells the oscilloscope when to acquire and display data For example you can set up to trigger on the rising edge of the analog channel 1 input signal You can adjust the vertical level used...

Страница 166: ...scope setup see Chapter 18 Save Recall Setups Screens Data starting on page 309 Triggers General Information A triggered waveform is one in which the oscilloscope begins tracing displaying the wavefor...

Страница 167: ...tion of the trigger level for the analog channel is indicated by the trigger level icon if the analog channel is on at the far left side of the display The value of the analog channel trigger level is...

Страница 168: ...t panel in the Trigger section press the Trigger key 2 In the Trigger Menu press the Trigger softkey and use the Entry knob to select Edge 3 Select the trigger source Analog channel 1 to the number of...

Страница 169: ...ed slope is displayed in the upper right corner of the display NOTE Alternating edge mode is useful when you want to trigger on both edges of a clock for example DDR signals Either edge mode is useful...

Страница 170: ...en the Nth edge occurs after an arming edge and a delay period The arm and trigger edges can be specified as Rising or Falling edges on analog or digital channels 1 Press the Trigger key 2 In the Trig...

Страница 171: ...Entry knob to select the channel on which the arming edge will occur b Press the Slope A softkey to specify which edge of the Arm A signal will arm the oscilloscope c Press the Trigger B softkey and...

Страница 172: ...6 Press the Delay softkey then turn the Entry knob to enter the delay time between the Arm A edge and the Trigger B edge 7 Press the Nth Edge B softkey then turn the Entry knob to select the Nth edge...

Страница 173: ...mbol The source can be any analog or digital channel available on your oscilloscope 4 Adjust the trigger level For analog channels turn the Trigger Level knob For digital channels press the Digital ke...

Страница 174: ...of the pulse if the qualifying condition is true 6 Press the qualifier softkey to select the time qualifier The Qualifier softkey can set the oscilloscope to trigger on a pulse width that is Less tha...

Страница 175: ...tifies a trigger condition by looking for a specified pattern This pattern is a logical AND combination of the channels Each channel can have a value of 0 low 1 high or don t care X A rising or fallin...

Страница 176: ...y knob 4 For each analog or digital channel you want to include in the desired pattern press the Channel softkey to select the channel This is the channel source for the 0 1 X or edge condition As you...

Страница 177: ...don t care on the selected channel Any channel set to don t care is ignored and is not used as part of the pattern However if all channels in the pattern are set to don t care the oscilloscope will no...

Страница 178: ...ftkey to set all digits to a particular value When a hex bus digit contains one or more don t care X bits and one or more bit with a value or 0 or 1 the sign will be displayed for the digit For inform...

Страница 179: ...softkey to select the channel As you press the Channel softkey or rotate the Entry knob the channel you select is highlighted in the OR line directly above the softkeys and in the upper right corner o...

Страница 180: ...care the oscilloscope will not trigger 6 To set all analog and digital channels to the edge selected by the Slope softkey press the Set all Edges softkey Rise Fall Time Trigger The Rise Fall Time trig...

Страница 181: ...e Entry knob to select Rise Fall Time 3 Press the Source softkey and turn the Entry knob to select the input channel source 4 Press the Rising Edge or Falling Edge softkey to toggle between edge types...

Страница 182: ...tkey to toggle between greater than or less than 8 Press the Time softkey and turn the Entry knob to select the time Nth Edge Burst Trigger The Nth Edge Burst trigger lets you trigger on the Nth edge...

Страница 183: ...ect the input channel source 4 Press the Slope softkey to specify the slope of the edge 5 Press the Idle softkey then turn the Entry knob to specify the idle time 6 Press the Edge softkey then turn th...

Страница 184: ...er threshold but not an upper threshold A negative runt pulse crosses through an upper threshold but not a lower threshold To trigger on runt pulses 1 Press the Trigger key 2 In the Trigger Menu press...

Страница 185: ...rigger Level knob to adjust the high level 6 Press the Level Select softkey to select Low then turn the Trigger Level knob to adjust the low level You can also push the Trigger Level knob to toggle be...

Страница 186: ...select Setup and Hold 3 Press the Clock softkey then turn the Entry knob to select the input channel with the clock signal 4 Set the appropriate trigger level for the clock signal using the Trigger Le...

Страница 187: ...most standard analog video signals The trigger circuitry detects the vertical and horizontal interval of the waveform and produces triggers based on the video trigger settings you have selected The o...

Страница 188: ...ource is displayed in the upper right corner of the display Turning the Trigger Level knob does not change the trigger level because the trigger level is automatically set to the sync pulse Trigger co...

Страница 189: ...pports triggering on the following television TV and video standards With the DSOX4VID extended video triggering license the oscilloscope additionally supports these standards NOTE Provide Correct Mat...

Страница 190: ...nchanged if Standard is Generic Display Grid type is set to IRE when Standard is NTSC or mV see To select the grid type on page 153 Horizontal time division is set to 10 s div for NTSC PAL SECAM stand...

Страница 191: ...l All Lines Trigger on all horizontal sync pulses Line Trigger on the selected line number EDTV and HDTV standards only Line Field1 and Line Field2 Trigger on the selected line in field 1 or field 2 i...

Страница 192: ...ith the DSOX4VID extended video triggering license is selected as the Video trigger Standard you can trigger on custom bi level and tri level sync video standards The Video Trigger Menu changes as fol...

Страница 193: ...c amplitude with any analog channel as the trigger source Turning the trigger Level knob in Video trigger does not change the trigger level because the trigger level is automatically set to the sync p...

Страница 194: ...is selected as the Video trigger mode the oscilloscope will trigger on all horizontal sync pulses 1 Press the Trigger key 2 In the Trigger Menu press the Trigger softkey then turn the Entry knob to s...

Страница 195: ...cific field is selected the oscilloscope triggers on the rising edge of the first serration pulse in the vertical sync interval in the specified field 1 or 2 1 Press the Trigger key 2 In the Trigger M...

Страница 196: ...or to find the amplitude differences between the fields use the All Fields trigger mode 1 Press the Trigger key 2 In the Trigger Menu press the Trigger softkey then turn the Entry knob to select Video...

Страница 197: ...1 is selected the oscilloscope triggers on color fields 1 or 3 When Field 2 is selected the oscilloscope triggers on color fields 2 or 4 1 Press the Trigger key 2 In the Trigger Menu press the Trigger...

Страница 198: ...or field 3 see the following figure This setup can be used to measure the envelope of the reference burst If a more detailed analysis is required then only one color field should be selected to be the...

Страница 199: ...be displayed in the Trigger Mode and Coupling Menu Table 4 Half field holdoff time Standard Time NTSC 8 35 ms PAL 10 ms PAL M 10 ms SECAM 10 ms Generic 8 35 ms EDTV 480p 60 8 35 ms EDTV 567p 50 10 ms...

Страница 200: ...ge 143 you can enable serial trigger types To set up these triggers see ARINC 429 Triggering on page 453 CAN Triggering on page 389 FlexRay Triggering on page 406 I2C Triggering on page 416 I2S Trigge...

Страница 201: ...ne qualified trigger feature works on top of the oscilloscope s hardware trigger which determines the acquisitions whose waveforms are evaluated for zone intersection To set up a zone qualified trigge...

Страница 202: ...that both zones are associated with Zone colors match the selected analog input channel Must Not Intersect zones are shaded differently than the solid Must Intersect zones The zone qualified trigger...

Страница 203: ...en two overlapping zones have different conditions Zone 1 takes precedence and Zone 2 is not used In this case Zone 2 will have no fill that is neither solid nor shaded to indicate that it is not bein...

Страница 204: ...204 Agilent InfiniiVision 4000 X Series Oscilloscopes User s Guide 10 Triggers...

Страница 205: ...ou are probing is noisy you can set up the oscilloscope to reduce the noise in the trigger path and on the displayed waveform First stabilize the displayed waveform by removing the noise from the trig...

Страница 206: ...log on page 55 See the following When to Use Auto Trigger Mode on page 207 and When to Use Normal Trigger Mode on page 207 descriptions You can also configure the Quick Action key to toggle between th...

Страница 207: ...er condition is found or pre trigger buffer is being filled When the oscilloscope is not running the trigger indicator area shows Stop When to Use Auto Trigger Mode The Auto trigger mode is appropriat...

Страница 208: ...pass filter in the trigger path removing any DC offset voltage from the trigger waveform The high pass filter in the External Trigger input path is 50 Hz for all models Use AC coupling to get a stabl...

Страница 209: ...n noise However this also decreases the trigger sensitivity so that a slightly larger signal is required to trigger the oscilloscope 1 Press the Mode Coupling key 2 In the Trigger Mode and Coupling Me...

Страница 210: ...Mode Coupling key 2 In the Trigger Mode and Coupling Menu press the Holdoff softkey then turn the Entry knob to increase or decrease the trigger holdoff time Trigger Holdoff Operating Hints The corre...

Страница 211: ...Volts for a voltage probe Amps for a current probe Measurement results channel sensitivity and the trigger level will reflect the measurement units you have selected 4 Press the Probe softkey then tu...

Страница 212: ...e Coupling 5 Press the Range softkey then turn the Entry knob to set the External Trigger input signal range The range is either 1 6 V or 8 V when you are using a 1 1 probe The range is automatically...

Страница 213: ...trol There are two front panel keys for starting and stopping the oscilloscope s acquisition system Run Stop and Single When the Run Stop key is green the oscilloscope is running that is acquiring dat...

Страница 214: ...istence See To set or clear persistence on page 151 Single vs Running and Record Length The maximum data record length is greater for a single acquisition than when the oscilloscope is running or when...

Страница 215: ...ate Sampling Theory The Nyquist sampling theorem states that for a limited bandwidth band limited signal with maximum frequency fMAX the equally spaced sampling frequency fS must be greater than twice...

Страница 216: ...mple rate is fS 2fBW However the theory assumes there are no frequency components above fMAX fBW in this case and it requires a system with an ideal brick wall frequency response However digital signa...

Страница 217: ...nse and Its Effect on Rise Time Accuracy Agilent Application Note 1420 http cp literature agilent com litweb pdf 5988 8008EN pdf See Also Evaluating Oscilloscope Sample Rates vs Sampling Fidelity How...

Страница 218: ...te the maximum practical frequency component From Dr Howard W Johnson s book High Speed Digital Design A Handbook of Black Magic all fast edges have an infinite spectrum of frequency components Howeve...

Страница 219: ...actual sample rate by throwing away decimating unneeded samples Selecting the Acquisition Mode When selecting the oscilloscope acquisition mode keep in mind that samples are normally decimated at slo...

Страница 220: ...23 High Resolution at slower time div settings all samples in the effective sample period are averaged and the average value is stored Use this mode for reducing random noise See High Resolution Acqui...

Страница 221: ...as compared to the waveform Peak detect mode can be used to more easily view glitches or narrow pulses In peak detect mode narrow glitches and sharp edges are displayed more brightly than when in Nor...

Страница 222: ...key then press the Persistence infinite persistence softkey Infinite persistence updates the display with new acquisitions but does not erase previous acquisitions New sample points are shown at norm...

Страница 223: ...div settings Averaging requires a stable trigger The number of averages can be set from 2 to 65536 in power of 2 increments A higher number of averages reduces noise more and increases vertical resol...

Страница 224: ...lent InfiniiVision 4000 X Series Oscilloscopes User s Guide 12 Acquisition Control The number of acquisitions being averaged is displayed in the Avgs softkey Figure 39 Random noise on the displayed wa...

Страница 225: ...a smoother trace on the screen and effectively increase vertical resolution High Resolution mode averages sequential sample points within the same acquisition An extra bit of vertical resolution is p...

Страница 226: ...ds there are enough sample points in a trigger acquisition in other words to render a waveform on the display Realtime sampling specifies that the oscilloscope produce the waveform display from sample...

Страница 227: ...f not it is possible for the reconstructed waveform to be distorted or aliased Aliasing is most commonly seen as jitter on fast edges The maximum sample rate for the 4000 X Series oscilloscopes is 5 G...

Страница 228: ...on of the front panel 3 Press the Segmented softkey 4 In the Segmented Memory Menu press the Segmented softkey to enable segmented memory acquisitions 5 Press the of Segs softkey and turn the Entry kn...

Страница 229: ...ing the time from the first trigger event You can also navigate segments using the Navigate key and controls See To navigate segments on page 77 Measurements Statistics and Infinite Persistence with S...

Страница 230: ...the horizontal time per division control is set to 5 s div and the Time Reference is set to Center it will take at least 50 s to fill all ten divisions and re arm That is 25 s to capture pre trigger d...

Страница 231: ...ntil the cursor is off screen its value will not be changed It will still be there when you return to its original location X Cursors X cursors are vertical dashed lines that adjust horizontally and c...

Страница 232: ...lues are relative to 0 dB In XY horizontal mode the Y cursors display channel 2 values Volts or Amps When active the Y1 and Y2 cursor values for the selected waveform source are displayed in the softk...

Страница 233: ...orms at the current X1 and X2 cursor positions are displayed in the Cursor sidebar dialog in binary The display is color coded to match the color of the related channel s waveform Hex Logic levels of...

Страница 234: ...To change the cursor units press the Units softkey In the Cursor Units Menu You can press the X Units softkey to select Seconds s Hz 1 s Phase when selected use the Use X Cursors softkey to set the c...

Страница 235: ...sion 4000 X Series Oscilloscopes User s Guide 235 You can also position cursors using the touchscreen See Drag Cursors on page 49 Cursor Examples Figure 41 Cursors used to measure pulse widths other t...

Страница 236: ...InfiniiVision 4000 X Series Oscilloscopes User s Guide 13 Cursors Expand the display with Zoom mode then characterize the event of interest with the cursors Figure 42 Cursors measure frequency of pul...

Страница 237: ...rsors 13 Agilent InfiniiVision 4000 X Series Oscilloscopes User s Guide 237 Put the X1 cursor on one side of a pulse and the X2 cursor on the other side of the pulse Figure 43 Cursors track Zoom windo...

Страница 238: ...iVision 4000 X Series Oscilloscopes User s Guide 13 Cursors Press the X1 X2 linked softkey and move the cursors together to check for pulse width variations in a pulse train Figure 44 Measuring pulse...

Страница 239: ...Cursors 13 Agilent InfiniiVision 4000 X Series Oscilloscopes User s Guide 239 Figure 45 Moving the cursors together to check pulse width variations...

Страница 240: ...240 Agilent InfiniiVision 4000 X Series Oscilloscopes User s Guide 13 Cursors...

Страница 241: ...s The results of the last 10 selected measurements are displayed in the Measurements list dialog which can be selected from the right hand sidebar menu see Select Sidebar Information or Controls on pa...

Страница 242: ...Clipped Low Signal value or value or a similar message to indicate that the measurement may not be reliable 3 Press the Type softkey then rotate the Entry knob to select a measurement to be made NOTE...

Страница 243: ...rements Summary on page 244 4 The Settings softkey will be available to make additional measurement settings on some measurements 5 Press the Add Measurement softkey or push the Entry knob to display...

Страница 244: ...The automatic measurements provided by the oscilloscope are listed in the following table All measurements are available for analog channel waveforms All measurements except Counter are available for...

Страница 245: ...g Edge Count on page 264 Falling Edges Count on page 264 Positive Pulse Count on page 263 Negative Pulse Count on page 263 Overshoot on page 250 Peak Peak on page 248 Yes Period on page 256 Yes Phase...

Страница 246: ...r s Guide at www agilent com find 4000X Series manual or on the Documentation CD Snapshot All The Snapshot All measurement type displays a popup containing a snapshot of all the single waveform measur...

Страница 247: ...Snapshot All popup See Configuring the Quick Action Key on page 347 Voltage Measurements The following figure shows the voltage measurement points Measurement units for each input channel can be set t...

Страница 248: ...age 252 DC RMS on page 252 AC RMS on page 253 Ratio on page 255 Peak Peak The peak to peak value is the difference between Maximum and Minimum values The Y cursors show the values being measured Maxim...

Страница 249: ...Maximum The Y cursor shows the value being measured See Also To isolate a pulse for Top measurement on page 249 To isolate a pulse for Top measurement The following figure shows how to use Zoom mode t...

Страница 250: ...e as Minimum The Y cursor shows the value being measured Overshoot Overshoot is distortion that follows a major edge transition expressed as a percentage of Amplitude The X cursors show which edge is...

Страница 251: ...precedes a major edge transition expressed as a percentage of Amplitude The X cursors show which edge is being measured edge closest to the trigger reference point Figure 47 Automatic Overshoot measu...

Страница 252: ...nterval variation measures the value on an integral number of periods of the displayed signal If less than three edges are present the measurement shows No edges The X cursors show what interval of th...

Страница 253: ...ree edges are present the measurement shows No edges The X cursors show the interval of the waveform being measured The Full Screen Std Deviation measurement interval variation is an RMS measurement a...

Страница 254: ...culated as follows where x the mean N the number of measurements taken xi the ith measurement result The standard deviation is calculated as follows where the standard deviation N the number of measur...

Страница 255: ...t lower middle and upper measurement thresholds are 10 50 and 90 between Top and Base values See Measurement Thresholds on page 265 for other percentage threshold and absolute value threshold settings...

Страница 256: ...time between the middle threshold crossings of two consecutive like polarity edges A middle threshold crossing must also travel through the lower and upper threshold levels which eliminates runt pulse...

Страница 257: ...occur within a period of time known as the gate time to measure the frequency of a signal The gate time for the Counter measurement is automatically adjusted to be 100 ms or twice the current time wi...

Страница 258: ...o the middle threshold of the next falling edge The X cursors show the pulse being measured The Y cursor shows the middle threshold point Width Width is the time from the middle threshold of the falli...

Страница 259: ...gative going edge The X cursor shows the edge being measured For maximum measurement accuracy set the horizontal time div as fast as possible while leaving the complete falling edge of the waveform on...

Страница 260: ...e rising edge of channel 2 5 Press the Back Up key to return to the Measurement Menu 6 Press the Add Measurement softkey to make the measurement The example below shows a delay measurement between the...

Страница 261: ...knob to select Delay 4 Press the Settings softkey to select the second analog channel source for the phase measurement The default Phase settings measure from channel 1 to channel 2 5 Press the Back...

Страница 262: ...he minimum may vary throughout the waveform The X cursor shows where the current X at Min Y value is being measured X at Max Y X at Max Y is the X axis value usually time at the first displayed occurr...

Страница 263: ...e in dB and X at Max Y units are in Hertz for FFT Count Measurements Positive Pulse Count on page 263 Negative Pulse Count on page 263 Rising Edge Count on page 264 Falling Edges Count on page 264 Pos...

Страница 264: ...veform source This measurement is available for analog channels Falling Edges Count The Falling Edges Count measurement is an edge count for the selected waveform source This measurement is available...

Страница 265: ...e Measurement Menu press the Settings softkey then press the Thresholds softkey to set analog channel measurement thresholds You can also open the Measurement Threshold Menu by pressing Analyze Featur...

Страница 266: ...is 10 or 800 mV If threshold Type is set to the lower threshold value can be set from 0 to 98 5 Press the Middle softkey then turn the Entry knob to set the middle measurement threshold value The mid...

Страница 267: ...hen turn the Entry knob to select from Auto Select When the zoomed time base is displayed the measurement is attempted in the lower Zoom window if it cannot be made there or if the zoomed time base is...

Страница 268: ...ment on channel 1 The following statistics are shown Name of the measurement current measured value mean minimum measured value maximum measured value standard deviation and the number of times the me...

Страница 269: ...le key is pressed statistics are reset and a single measurement is done count 1 Successive Single acquisitions accumulate statistical data and the count is incremented The Increment Statistics softkey...

Страница 270: ...270 Agilent InfiniiVision 4000 X Series Oscilloscopes User s Guide 14 Measurements...

Страница 271: ...th chosen parameters Compliance to the mask is verified point by point across the display Mask test operates on displayed analog channels it does not operate on channels that are not displayed To enab...

Страница 272: ...alog channel is selected 7 Adjust the mask s horizontal tolerance Y and vertical tolerance X These are adjustable in graticule divisions or in absolute units volts or seconds selectable using the Unit...

Страница 273: ...e persistence is off when mask test is enabled it is switched on when mask test is switched on then infinite persistence is switched off when mask test is switched off Troubleshooting Mask Setup If yo...

Страница 274: ...ccur The actual number of tests completed is displayed above the softkeys Minimum Time Choose this option and then use the Test Time softkey to select how long the oscilloscope will run When the selec...

Страница 275: ...mode is not available when the acquisition mode is set to Averaging Note that you can choose to Print or Save but you cannot select both at the same time All other actions may be selected at the same...

Страница 276: ...displayed Current mask name of mask Channel number date and time of Tests total number of mask tests executed Status Passing Failing or Untested Accumulated test time in hours minutes seconds and tent...

Страница 277: ...ss to Save softkey This creates an ASCII text file that describes the mask 8 Remove the USB mass storage device and connect it to a PC 9 Open the msk file your created using a text editor such as Word...

Страница 278: ...fined for a mask They can be numbered 1 8 They can appear in any order in the msk file The numbering of the regions must go from top to bottom left to right An Automask file contains two special regio...

Страница 279: ...file The Y values normally voltage are normalized in the file using the following equation Ynorm Y Y1 Y where Y Y2 Y1 To convert the normalized Y values in the mask file to voltage Y Ynorm Y Y1 where...

Страница 280: ...ES SCAL BIND 0 MTES SCAL X1 400 000E 06 MTES SCAL XDEL 800 000E 06 MTES SCAL Y1 359 000E 03 MTES SCAL Y2 2 35900E 00 Building a Mask File The following mask uses all eight mask regions The most diffic...

Страница 281: ...0 1 000 02 50 0 500 02 50 0 500 05 00 1 000 02 50 1 500 02 50 1 500 Region Number 4 Number of vertices 5 10 00 1 000 12 50 0 500 15 00 0 500 15 00 1 500 12 50 1 500 Region Number 5 Number of vertices...

Страница 282: ...2 DISP LAB 0 CONN 1 PERS MIN SOUR PMEM1 HARD APR AREA SCR FACT 0 FFE 0 INKS 1 PAL NONE LAY PORT SAVE FIL mask_0 SAVE IMAG AREA GRAT FACT 0 FORM NONE INKS 0 PAL COL SAVE WAV FORM NONE MTES SOUR CHAN1...

Страница 283: ...ime of oscilloscope purchase or order DSOXDVM as a stand alone item after oscilloscope purchase The DVM display is a seven segment readout like you would see on a digital voltmeter It shows the select...

Страница 284: ...ltmeter 1 Press the Analyze key 2 Press Features then select Digital Voltmeter 3 Press Features again to enable the DVM measurements 4 Press the Source softkey and turn the Entry knob to select the an...

Страница 285: ...selected source channel is not used in oscilloscope triggering press Auto Range to disable or enable automatic adjustment of the DVM channel s vertical scale vertical ground level position and trigge...

Страница 286: ...286 Agilent InfiniiVision 4000 X Series Oscilloscopes User s Guide 16 Digital Voltmeter...

Страница 287: ...orm generator is built into the oscilloscope It is enabled by Option WGN or the DSOX4WAVEGEN2 upgrade The waveform generator gives you an easy way to provide input signals when testing circuitry with...

Страница 288: ...first turned on The waveform generator output is automatically disabled if excessive voltage is applied to the Gen Out BNC 2 In the Waveform Generator Menu press the Waveform softkey and turn the Entr...

Страница 289: ...ameters The duty cycle can be adjusted from 20 to 80 100 mHz to 10 MHz 20 mVpp to 10 Vpp 5 00 V Ramp Use the Frequency Frequency Fine Period Period Fine Amplitude High Level Offset Low Level and Symme...

Страница 290: ...iod Fine Amplitude High Level and Offset Low Level softkeys to set the exponential rise signal parameters 100 mHz to 5 MHz 20 mVpp to 10 Vpp 5 00 V Exponential Fall Use the Frequency Frequency Fine Pe...

Страница 291: ...page 300 To set up dual channel tracking on page 307 To add modulation to the waveform generator output on page 302 To add noise to the waveform generator output on page 301 To restore waveform genera...

Страница 292: ...o define the shape of the arbitrary waveform Softkey Description Create New Opens the New Waveform Menu See Creating New Arbitrary Waveforms on page 293 Edit Existing Opens the Edit Waveform Points Me...

Страница 293: ...y waveform 3 Use the Amplitude High Level and Offset Low Level softkeys to set the voltage bounding parameter of the arbitrary waveform 4 When you are ready to create the new arbitrary waveform press...

Страница 294: ...screen to Edit Existing Waveforms To select a point touch or drag in the upper full waveform display For fine points selection touch the previous point or next point arrows To adjust the value of a po...

Страница 295: ...Oscilloscopes User s Guide 295 To select a points region first make sure you are in region selection drag mode Then drag across the lower waveform display For fine adjustment of the region selection o...

Страница 296: ...board and Paste points from the clipboard When pasting points from the clipboard you can paste at the beginning end cursor location currently selected point or you can replace the currently selected p...

Страница 297: ...s User s Guide 297 Then drag the lower waveform across the display area Using Softkeys to Edit Existing Waveforms The Edit Waveform Points Menu is opened by pressing Edit Existing in the Edit Waveform...

Страница 298: ...ish to set 2 Press Voltage then use the Entry knob to set the point s voltage value To insert a point 1 Press Point then use the Entry knob to select the point after which the new point will be insert...

Страница 299: ...sync pulse 1 If the Waveform Generator Menu is not currently displayed on the oscilloscope s softkeys press the Wave Gen key 2 In the Waveform Generator Menu press the Settings softkey CAUTION When yo...

Страница 300: ...load selection lets the waveform generator display the correct amplitude and offset levels for the expected output load If the actual load impedance is different than the selected value the displayed...

Страница 301: ...Menu press the Settings softkey 3 In the Waveform Generator Settings Menu press the Add Noise softkey and turn the Entry knob to select the amount of white noise to add to the waveform generator outpu...

Страница 302: ...e or disable modulated waveform generator output You can enable modulation for all waveform generator function types except arbitrary square pulse DC noise and Gaussian pulse Modulation is not availab...

Страница 303: ...pears so that you can specify the amount of time per cycle that the ramp waveform is rising 3 Press the AM Freq softkey and turn the Entry knob to specify the frequency of the modulating signal 4 Pres...

Страница 304: ...Wave Gen Settings Modulation 1 Press the Type softkey and turn the Entry knob to select Frequency Modulation FM 2 Press the Waveform softkey and turn the Entry knob to select the shape of the modulati...

Страница 305: ...he output frequency is the carrier signal frequency plus the deviation amount and when the modulating signal is at its minimum amplitude the output frequency is the carrier signal frequency minus the...

Страница 306: ...ect Frequency Shift Keying Modulation FSK 2 Press the Hop Freq softkey and turn the Entry knob to specify the hop frequency The output frequency shifts between the original carrier frequency and this...

Страница 307: ...ress the Wave Gen1 or Wave Gen2 key for the waveform generator output that you want to be tracked 2 In the Waveform Generator Menu press Settings 3 In the Waveform Generator Settings Menu press Dual C...

Страница 308: ...eform shapes can be frequency tracked When Tracking or Freq Tracking is enabled the other generator s waveform selections will be limited dependent upon this generator s waveform Also when tracking is...

Страница 309: ...e in BMP or PNG formats Acquired waveform data can be saved to a USB storage device in comma separated value CSV ASCII XY and binary BIN formats There is also a command to securely erase all the oscil...

Страница 310: ...II XY or BIN data files on page 312 Reference Waveform data h5 Saves waveform data in a format that can be recalled to one of the oscilloscope s reference waveform locations See To save reference wave...

Страница 311: ...o navigate to the save location See To navigate storage locations on page 317 3 Finally press the Press to Save softkey A message indicating whether the save was successful is displayed Setup files ha...

Страница 312: ...use the Entry knob to navigate to the save location See To navigate storage locations on page 317 3 Press the Settings softkey In the File Settings Menu you have these softkeys and options Setup Info...

Страница 313: ...rd data for each active source Interpolation between measurement record data points is performed as needed ASCII XY Data When the ASCII XY data csv file format is selected comma separated value files...

Страница 314: ...ether only one channel of a pair is turned on Channels 1 and 2 are one pair channels 3 and 4 are the other Acquisition memory is divided among the channels in a pair Whether reference waveforms are on...

Страница 315: ...7 3 Press the Settings softkey In the File Settings Menu you have these softkeys and options Setup Info when enabled setup information vertical horizontal trigger acquisition math and display settings...

Страница 316: ...he Entry knob to navigate to the save location See To navigate storage locations on page 317 3 Finally press the Press to Save softkey A message indicating whether the save was successful is displayed...

Страница 317: ...orage location Location when you have navigated to the current folder location and are not saving files Save to when you can save to the selected location Load from when you can recall from the select...

Страница 318: ...ile name length is at maximum and more digits are required for the numeric portion of the file name Recalling Setups Masks or Data 1 Press the Save Recall key 2 In the Save Recall Menu press Recall 3...

Страница 319: ...lled from one of four internal Agilent Flash locations or from an external USB storage device 1 Press Save Recall Recall Recall then turn the Entry knob to select Mask msk 2 Press the softkey in the s...

Страница 320: ...loscope be aware that If the file contains two columns the second column is automatically chosen If the file contains more than two columns you are prompted to select which column to load Up to five c...

Страница 321: ...page 33 Some user settings are not changed when recalling the default setup Factory Default recalls the oscilloscope s factory default settings You must confirm the recall because there are no user s...

Страница 322: ...322 Agilent InfiniiVision 4000 X Series Oscilloscopes User s Guide 18 Save Recall Setups Screens Data...

Страница 323: ...key are ghosted not available until a printer is connected To print the oscilloscope s display 1 Connect a printer You can Connect a USB printer to one of the the USB ports on the front panel or the r...

Страница 324: ...can also configure the Quick Action key to print the display See Configuring the Quick Action Key on page 347 See Also To add an annotation on page 162 NOTE The oscilloscope will print the last menu...

Страница 325: ...t using The touch screen when the front panel Touch key is lit The Entry knob Turn the knob to select a key in the dialog then push the Entry knob to enter it A connected USB keyboard A connected USB...

Страница 326: ...ions Setup Information Select this to print oscilloscope setup information on your printout including vertical horizontal trigger acquisition math and display settings Invert Graticule Colors Select t...

Страница 327: ...User s Guide 327 To specify the palette option In the Print Configuration Menu press the Palette softkey to change the following options Color Select this to print the screen in color Grayscale Selec...

Страница 328: ...328 Agilent InfiniiVision 4000 X Series Oscilloscopes User s Guide 19 Print Screens...

Страница 329: ...Setting the Reference Signal Mode 339 Performing Service Tasks 342 Configuring the Quick Action Key 347 This chapter explains oscilloscope utility functions I O Interface Settings The oscilloscope can...

Страница 330: ...panel LAN port you can place the oscilloscope on the network and set up its LAN connection Once that is done you can set up and use network printers or use the oscilloscope s web interface or remotel...

Страница 331: ...works without a conventional DNS server 6 Connect the oscilloscope to the local area network LAN by inserting the LAN cable into the LAN port on the rear panel of the oscilloscope In a few moments the...

Страница 332: ...escribes how to establish a point to point stand alone connection to the oscilloscope This is useful if you want to control the oscilloscope using a laptop computer or a stand alone computer 1 Press U...

Страница 333: ...pe s internal file system under Agilent Flash consists of 10 locations for oscilloscope setup files four locations for mask files and four locations for waveform generator arbitrary waveform files To...

Страница 334: ...file that can be loaded or deleted When this label appears you can press the Load File or Delete File softkeys to take the action Pushing the Entry knob is the same as pressing the Load File softkey...

Страница 335: ...gnated usb and the second one is designated usb2 See Also Chapter 18 Save Recall Setups Screens Data starting on page 309 Setting Oscilloscope Preferences The User Preferences Menu under Utility Optio...

Страница 336: ...ing for whether measurements statistics reference waveform information and other text displays have transparent or solid backgrounds 1 Press Utility Options Preferences 2 Press Transparent to toggle b...

Страница 337: ...Press the Wait softkey then turn the Entry knob to select the number of minutes to wait before the selected screen saver activates When you turn the Entry knob the number of minutes is displayed on t...

Страница 338: ...nd turn the Entry knob to select whether the acquisition mode should be preserved during autoscale Normal to make the oscilloscope switch to Normal acquisition mode whenever the AutoScale key is press...

Страница 339: ...and 0 2 5 V into 50 See Chapter 10 Triggers starting on page 165 Mask The pass fail status is evaluated periodically When the evaluation of the testing period results in a failure the trigger output p...

Страница 340: ...ply an external timebase reference the hardware frequency counter is automatically changed to an 8 digit counter In this case the frequency counter Meas Select Counter is as accurate as the external c...

Страница 341: ...omes stable again To synchronize the timebase of two or more instruments The oscilloscope can output its 10 MHz system clock for the purpose of synchronization with other instruments 1 Connect a BNC c...

Страница 342: ...e see To clean the oscilloscope on page 345 To check warranty and extended services status on page 346 To contact Agilent on page 346 To return the instrument on page 346 To perform user calibration P...

Страница 343: ...ow the oscilloscope to warm up before performing this procedure 2 Press the rear panel CAL button to disable calibration protection 3 Connect short 12 inch maximum equal length cables to each analog c...

Страница 344: ...ervice softkey 6 Begin the Self Cal by pressing the Start User Cal softkey To perform hardware self test Pressing Utility Service Hardware Self Test performs a series of internal procedures to verify...

Страница 345: ...pe to display information about your oscilloscope Model number Serial number Bandwidth Module installed Software version Installed licenses See also Loading Licenses and Displaying License Information...

Страница 346: ...r product s warranty status select Contact Us and speak with an Agilent Technologies representative To contact Agilent Information on contacting Agilent Technologies can be found at www agilent com fi...

Страница 347: ...n in the Measurement Menu See Chapter 14 Measurements starting on page 241 Quick Print prints the current screen image Press Settings to set up the printing options See Chapter 19 Print Screens starti...

Страница 348: ...348 Agilent InfiniiVision 4000 X Series Oscilloscopes User s Guide 20 Utility Settings Once the Quick Action key is configured you simply press it to perform the selected action...

Страница 349: ...IP address and VISA address connect string Control the oscilloscope using the Remote Front Panel Send SCPI Standard Commands for Programmable Instrumentation remote programming commands via the SCPI...

Страница 350: ...stems Java Plug in Before you can use the web interface you must place the oscilloscope on the network and set up its LAN connection Accessing the Web Interface To access the oscilloscope s web interf...

Страница 351: ...access to The Real Scope Remote Front Panel see Real Scope Remote Front Panel on page 352 The Simple Remote Front Panel see Simple Remote Front Panel on page 353 The Browser Based Remote Front Panel s...

Страница 352: ...ope using the web interface s Real Scope Remote Front Panel 1 Access the oscilloscope s web interface see Accessing the Web Interface on page 350 2 When the oscilloscope s web interface is displayed s...

Страница 353: ...ront Panel 1 Access the oscilloscope s web interface see Accessing the Web Interface on page 350 2 When the oscilloscope s web interface is displayed select Browser Web Control then select Simple Remo...

Страница 354: ...0 x 600 on your computer s display Browser Based Remote Front Panel To operate the oscilloscope using the web interface s Browser Based Remote Front Panel 1 Access the oscilloscope s web interface see...

Страница 355: ...te programming commands to the oscilloscope via the SCPI Commands applet window 1 Access the oscilloscope s web interface see Accessing the Web Interface on page 350 2 When the oscilloscope s web inte...

Страница 356: ...t and data acquisition is typically done using the Agilent IO Libraries which are separate from the instrument s web interface The Agilent IO Libraries let a controller PC communicate with Agilent Inf...

Страница 357: ...an save setup files screen images waveform data files or mask files to your PC via the oscilloscope s web interface see Saving Files via the Web Interface on page 357 You can recall setup files refere...

Страница 358: ...current acquisition is saved d In the File Download dialog click Save e In the Save As dialog navigate to the folder where you want to save the file then click Save Recalling Files via the Web Interf...

Страница 359: ...ll Get Image To save or print the oscilloscope s display from the web interface 1 Access the oscilloscope s web interface see Accessing the Web Interface on page 350 2 When the oscilloscope s web inte...

Страница 360: ...he oscilloscope s web interface see Accessing the Web Interface on page 350 2 When the oscilloscope s web interface Welcome Page is displayed select the Identification on radio button An Identify mess...

Страница 361: ...lent InfiniiVision 4000 X Series Oscilloscopes User s Guide 361 View installed options View firmware versions Install firmware upgrade files View calibration status You can select these capabilities v...

Страница 362: ...362 Agilent InfiniiVision 4000 X Series Oscilloscopes User s Guide 21 Web Interface...

Страница 363: ...via a Web browser and changing parameters Remote users can still view the Welcome screen view network status etc but they can t operate the instrument or change its setup without the password To set...

Страница 364: ...364 Agilent InfiniiVision 4000 X Series Oscilloscopes User s Guide 21 Web Interface 4 Enter your desired password and click Apply Changes Configure Network tab Modify Configuration...

Страница 365: ...user name is the IP address of the oscilloscope To reset the password Do one of these things to reset the password Using the keys on the front panel of the oscilloscope press Utility I O LAN Reset Usi...

Страница 366: ...366 Agilent InfiniiVision 4000 X Series Oscilloscopes User s Guide 21 Web Interface...

Страница 367: ...nfiniiVision oscilloscope data sheets for complete up to date specifications and characteristics To download a data sheet please visit www agilent com find 4000X Series Then select the Library tab fol...

Страница 368: ...formed on circuits directly connected to the low voltage installation Examples are measurements on household appliances portable tools and similar equipment Measurement category III is for measurement...

Страница 369: ...Vpk CAT II 400 Vpk With N2871A N2872A N2873A 10 1 probe CAT I 400 Vpk transient overvoltage 1 25 kVpk CAT II 300 Vpk CAUTION Maximum input voltage at digital channels 40 V peak CAT I transient overvo...

Страница 370: ...urrent is drawn from the AutoProbe interface an error message will be displayed indicating that you must momentarily disconnect all probes to reset the AutoProbe interface then connect only the suppor...

Страница 371: ...set the probe attenuation factor manually See To specify the probe attenuation on page 86 The following passive probes can be used with the InfiniiVision 4000 X Series oscilloscopes Any combination o...

Страница 372: ...s connected N2795A Active probe 1 GHz with AutoProbe interface 4 N2796A Active probe 2 GHz with AutoProbe interface 4 1 See AutoProbe Interface on page 370 Table 7 Differential Probes Model Descriptio...

Страница 373: ...copes N2891A 70 MHz 7 kV high voltage differential probe 1See AutoProbe Interface on page 370 Table 7 Differential Probes continued Model Description Quantity Supported1 Table 8 Current Probes Model D...

Страница 374: ...tion is displayed with other oscilloscope information see To display oscilloscope information on page 345 For more information about the licenses and other oscilloscope options available see Licensed...

Страница 375: ...r Serial Triggering and Analysis RS232 422 485 UART Provides trigger and decode capability for many UART Universal Asynchronous Receiver Transmitter protocols including RS232 Recommended Standard 232...

Страница 376: ...grade a DSO to an MSO Adds 16 digital channels You do not have to install any hardware Order DSOXPERFMSO The digital probe cable kit is supplied with the MSO license PWR Power Measurement and Analysis...

Страница 377: ...format and provides data headers that describe that data Because the data is in binary format the size of the file is approximately 5 times smaller than the ASCII XY format If more than one source is...

Страница 378: ...an InfiniiVision oscilloscope can be imported to The MathWorks MATLAB You can download the appropriate MATLAB functions from the Agilent Technologies web site at www agilent com find 4000X Series exam...

Страница 379: ...s created using an acquisition mode like averaging For example when averaging a count of four would mean every waveform data point in the waveform record has been averaged at least four times The defa...

Страница 380: ...cter array left blank in the InfiniiVision oscilloscopes Frame A 24 byte character array that is the model number and serial number of the oscilloscope in the format of MODEL SERIAL Waveform Label A 1...

Страница 381: ...m find 4000X Series examples and select Example Program for Reading Binary Data Examples of Binary Files Single Acquisition Multiple Analog Channels The following picture shows a binary file of a sing...

Страница 382: ...of Waveform Buffers 1 Buffer Type 1 floating point Bytes per Point 4 Waveform Header 1 140 bytes Waveform Data Header 1 12 bytes Voltage Data 1 buffer size Waveform Header 2 140 bytes Waveform Data He...

Страница 383: ...ition on one analog channel File Header 12 bytes Waveform Header 2 140 bytes Waveform Data Header 1 12 bytes Pod 1 Timing Data buffer size Waveform Data Header 2 12 bytes Pod 2 Timing Data buffer size...

Страница 384: ...tes Waveform Data Header 2 12 bytes Voltage Data 2 buffer size Waveform Header N 140 bytes Waveform Data Header N 12 bytes Voltage Data N buffer size Number of Waveforms N Number of Segments Number of...

Страница 385: ...ion When the oscilloscope s sample rate is 4 GSa s a sample will be taken every 250 ps If the horizontal scale is set to 10 us div there will be 100 us of data displayed because there are ten division...

Страница 386: ...scilloscopes Documentation CD ROM RealVNC source code can be obtained from RealVNC or by contacting Agilent Agilent will charge for the cost of physically performing the source distribution HDF5 Refer...

Страница 387: ...of connecting the oscilloscope to a CAN signal using the Signals Menu to specify the signal source threshold voltage level baud rate and sample point To set up the oscilloscope to capture CAN signals...

Страница 388: ...aud rates from 10 kb s up to 5 Mb s or a user defined baud rate from 10 0 kb s to 4 Mb s in increments of 100 b s Fractional user defined baud rates between 4 Mb s and 5 Mb s are not allowed The defau...

Страница 389: ...cted to an analog source channel using a differential probe Connect the probe s positive lead to the dominant low CAN signal CAN_L and connect the negative lead to the dominant high CAN signal CAN_H C...

Страница 390: ...ta Press the Bits softkey to select the ID and set up the number of data bytes and values Error Frame The oscilloscope will trigger on CAN active error frames All Errors The oscilloscope will trigger...

Страница 391: ...key to acquire and decode data You can use the horizontal Zoom window for easier navigation of the decoded data See Also Interpreting CAN Decode on page 392 CAN Totalizer on page 393 Interpreting CAN...

Страница 392: ...rames and green for remote frames Data bytes appear in hex digits in white for data frames Cyclic redundancy check CRC appears in hex digits in blue when valid or in red to indicate that the oscillosc...

Страница 393: ...tages and is displayed whenever CAN decode is displayed The totalizer counts even when the oscilloscope is stopped not acquiring data Pressing the Run Stop key does not affect the totalizer When an ov...

Страница 394: ...00 ms Example If a data frame contains an active error flag both the FRAMES counter and the ERR counter will be incremented If a data frame contains an error that is not an active error it is consider...

Страница 395: ...ntry knob to select the serial slot Serial 1 or Serial 2 on which the CAN signal is being decoded 3 Press Search then select from these options Remote Frame ID RTR Finds remote frames with the specifi...

Страница 396: ...ls Menu 6 Press the Source softkey to select the channel connected to the LIN signal line The label for the LIN source channel is automatically set 7 Press the Threshold softkey then turn the Entry kn...

Страница 397: ...ID Values as shown in section A 2 of the LIN Specification dated December 12 2002 If your signal does not comply with the table use the LIN 2 0 setting 13 Press the Sync Break softkey and select the m...

Страница 398: ...that marks the beginning the message frame ID Frame ID The oscilloscope triggers when a frame with an ID equal to the selected value is detected Use the Entry knob to select the value for the Frame I...

Страница 399: ...e 399 LIN Serial Decode To set up the oscilloscope to capture LIN signals see Setup for LIN Signals on page 396 NOTE For details about using the LIN Bits Menu softkeys press and hold the softkey in qu...

Страница 400: ...selected 3 If the decode line does not appear on the display press the Serial key to turn it on 4 If the oscilloscope is stopped press the Run Stop key to acquire and decode data You can use the hori...

Страница 401: ...y bits if enabled appear in red Decoded hexadecimal data values appear in white For LIN 1 3 the checksum appears in blue if correct or red if incorrect The checksum always appears in white for LIN 2 0...

Страница 402: ...ecified in the standard THM will appear red If the total frame count exceeds the length specified in the standard TFM will appear red LIN 1 3 only For LIN 1 3 a wakeup signal is indicated by WAKE in b...

Страница 403: ...marked rows 1 With LIN selected as the serial decode mode press Search 2 In the Search Menu press the Search softkey then turn the Entry knob to select the serial slot Serial 1 or Serial 2 on which t...

Страница 404: ...404 Agilent InfiniiVision 4000 X Series Oscilloscopes User s Guide 23 CAN LIN Triggering and Serial Decode...

Страница 405: ...cilloscope to a differential FlexRay signal using a differential active probe the Agilent N2792A is recommended specifying the signal source threshold voltage trigger level baud rate and bus type To s...

Страница 406: ...ecify the correct bus because this setting affects CRC error detection 10 Press Auto Setup to perform the following actions Sets the selected source channel s impedance to 50 Ohms assuming a different...

Страница 407: ...5 Press the Frame ID softkey and use the Entry knob to select the frame ID value from All or 1 to 2047 6 Press the Frame Type softkey to select the frame type All Frames Startup Frames NULL Frames Syn...

Страница 408: ...the error type All Errors Header CRC Error cyclic redundancy check error in the header Frame CRC Error cyclic redundancy check error in the frame Triggering on FlexRay Events 1 Press Trigger NOTE Beca...

Страница 409: ...e up TSS Transmission Start Sequence BSS ByteStart Sequence FES DTS Frame End or Dynamic Trailing Sequence 5 Press Auto Setup for Event This automatically configures oscilloscope settings as shown on...

Страница 410: ...use the horizontal Zoom window for easier navigation of the acquired data See Also Interpreting FlexRay Decode on page 410 FlexRay Totalizer on page 411 Interpreting FlexRay Lister Data on page 412 Se...

Страница 411: ...ounters that provide a direct measure of bus quality and efficiency The totalizer appears on screen whenever FlexRay Decode is ON in the Serial Decode Menu The FRAMES counter gives a real time count o...

Страница 412: ...Ray Triggering and Serial Decode Interpreting FlexRay Lister Data In addition to the standard Time column the FlexRay Lister contains these columns FID frame ID Len payload length HCRC header CRC CYC...

Страница 413: ...Frame ID Finds frames with the specified ID Press the Frame ID softkey to select the ID Cycle number Frame ID Finds frames with the specified cycle number and ID Press the Frame ID softkey to select t...

Страница 414: ...414 Agilent InfiniiVision 4000 X Series Oscilloscopes User s Guide 24 FlexRay Triggering and Serial Decode...

Страница 415: ...I2 C Inter IC bus signals setup consists of connecting the oscilloscope to the serial data SDA line and the serial clock SCL line and then specifying the input signal threshold voltage levels To set...

Страница 416: ...threshold voltage level is used in decoding and it will become the trigger level when the trigger type is set to the selected serial decode slot Data must be stable during the whole high clock cycle...

Страница 417: ...from low to high while the clock SCL is high Missing Acknowledge The oscilloscope triggers when SDA data is high during any Ack SCL clock bit Address with no Ack The oscilloscope triggers when the ack...

Страница 418: ...bit addressing mode on the 26th clock edge if all bits in the pattern match For triggering purposes a restart is treated as a start condition 10 bit Write The oscilloscope triggers on a 10 bit write...

Страница 419: ...frame condition or a 10 bit write frame condition a Press the Address softkey and turn the Entry knob to select the 7 bit or 10 bit device address You can select from an address range of 0x00 to 0x7F...

Страница 420: ...set up the oscilloscope to capture I2C signals see Setup for I2C Signals on page 415 To set up I2C serial decode 1 Press Serial to display the Serial Decode Menu 2 Choose 7 bit or 8 bit address size...

Страница 421: ...Lister Data on page 423 Searching for I2C Data in the Lister on page 423 Interpreting I2C Decode Angled waveforms show an active bus inside a packet frame Mid level blue lines show an idle bus In the...

Страница 422: ...a values appear in white a indicates Ack low a indicates No Ack high Decoded text is truncated at the end of the associated frame when there is insufficient space within frame boundaries Pink vertical...

Страница 423: ...colored blue for writes yellow for reads Data data bytes Missing Ack indicated by an X highlighted in red if an error Aliased data is highlighted in pink When this happens decrease the horizontal tim...

Страница 424: ...qualifier set by the Data is softkey and the Data softkeys Frame Start Address7 Read Ack Data finds a read frame on the 17th clock edge if all bits in the pattern match Frame Start Address7 Write Ack...

Страница 425: ...SPI Clock Menu a Press the Clock softkey then turn the Entry knob to select the channel connected to the SPI serial clock line The CLK label for the source channel is automatically set b Press the Thr...

Страница 426: ...me the trigger level when the trigger type is set to the selected serial decode slot 8 Optional Press the MISO softkey to open the SPI Master In Slave Out Menu In the SPI Master In Slave Out Menu a Pr...

Страница 427: ...period during which the clock signal has been idle If the framing signal is set to CS or CS the first clock edge as defined rising or falling seen after the CS or CS signal transitions from low to hig...

Страница 428: ...ess the Threshold softkey then turn the Entry knob to select the chip select signal threshold voltage level The threshold voltage level is used in decoding and it will become the trigger level when th...

Страница 429: ...ata signal Master In Slave Out MISO Data for triggering on the MISO data signal 5 Press the Bits softkey and turn the Entry knob to set the number of bits Bits in the serial data string The number of...

Страница 430: ...Bits softkey will set all bits in the data string to the value of the 0 1 X softkey SPI Serial Decode To set up the oscilloscope to capture SPI signals see Setup for SPI Signals on page 424 NOTE For...

Страница 431: ...serial decode waveform and in the Lister 4 If the decode line does not appear on the display press the Serial key to turn it on 5 If the oscilloscope is stopped press the Run Stop key to acquire and...

Страница 432: ...imal data values appear in white Decoded text is truncated at the end of the associated frame when there is insufficient space within frame boundaries Pink vertical bars indicate you need to expand th...

Страница 433: ...decrease the horizontal time div setting and run again Searching for SPI Data in the Lister The oscilloscope s search capability lets you search for and mark certain types of SPI data in the Lister Y...

Страница 434: ...SO Data for searching MISO data 4 Press the Bits softkey to open the SPI Bits Search Menu 5 In the SPI Bits Search Menu use the Words softkey to specify the number of words in the data value then use...

Страница 435: ...of connecting the oscilloscope to the serial clock word select and serial data lines and then specifying the input signal threshold voltage levels To set up the oscilloscope to capture I2S signals 1 P...

Страница 436: ...me the trigger level when the trigger type is set to the selected serial decode slot The SCLK WS and SDATA labels for the source channels are automatically set 7 Press the Back Up key to return to the...

Страница 437: ...bit delay that Standard format employs Right Justified Data transmission MSB first is right justified to the transition of WS 12 Press the WS Low softkey then turn the Entry knob to select whether WS...

Страница 438: ...ther rising or falling The on screen diagram changes with your selection I2S Triggering To set up the oscilloscope to capture I2S signals see Setup for I2S Signals on page 435 After you have set up th...

Страница 439: ...ge enter upper and lower values to specify range in which trigger will not occur Increasing value triggers when the data value is increasing over time and the specified value is met or exceeded Set Tr...

Страница 440: ...ns the I2S Bits Menu for entering data values When the trigger qualifier requires a pair of values as with In Range Out of Range Increasing value or Decreasing value the first softkey in the I2S Bits...

Страница 441: ...f the oscilloscope is stopped press the Run Stop key to acquire and decode data NOTE If the setup does not produce a stable trigger the I2S signal may be slow enough that the oscilloscope is AutoTrigg...

Страница 442: ...preting I2S Decode on page 442 Interpreting I2S Lister Data on page 443 Searching for I2S Data in the Lister on page 444 Interpreting I2S Decode Angled waveforms show an active bus inside a packet fra...

Страница 443: ...run again to see decode Red dots in the decode line indicate that more data can be displayed Scroll or expand the horizontal scale to view the data Aliased bus values undersampled or indeterminate are...

Страница 444: ...e mode press Search 2 In the Search Menu press the Search softkey then turn the Entry knob to select the serial slot Serial 1 or Serial 2 on which the I2S signals are being decoded 3 In the Search Men...

Страница 445: ...triggering and decode solution supports bi phase MIL STD 1553 signaling by using dual threshold triggering The solution supports the standard 1553 Manchester II encoding data rate of 1 Mb s and word l...

Страница 446: ...to Setup softkey which performs these actions Sets the probe attenuation factor of the input Source channel to 10 1 Sets upper and lower thresholds to a voltage value equal to 1 3 division based on th...

Страница 447: ...nc pulse Data Word Stop triggers on the end of a Data word Command Status Word Start triggers on the start of Command Status word at the end of a valid C S Sync pulse Command Status Word Stop triggers...

Страница 448: ...gnals see Setup for MIL STD 1553 Signals on page 445 To set up MIL STD 1553 serial decode 1 Press Serial to display the Serial Decode Menu 2 Use the Base softkey to select between hexadecimal and bina...

Страница 449: ...ing for MIL STD 1553 Data in the Lister on page 451 Interpreting MIL STD 1553 Decode To display serial decode information you must press Run or Single after switching on serial decode The MIL STD 1553...

Страница 450: ...ster encoding errors are displayed with the word MANCH within blue angle brackets blue instead of red because a valid Sync pulse started the word Interpreting MIL STD 1553 Lister Data In addition to t...

Страница 451: ...slot Serial 1 or Serial 2 on which the MIL STD 1553 signal is being decoded 3 Press Search then select from these options Data Word Start finds the start of a Data word at the end of a valid Data Syn...

Страница 452: ...signal source the high and low trigger threshold voltage levels the signal speed and the signal type To set up the oscilloscope to capture ARINC 429 signals 1 Press Label to turn on labels 2 Press Se...

Страница 453: ...correctly by Auto Setup Press the High Threshold softkey then turn the Entry knob to set the high trigger threshold voltage level Press the Low Threshold softkey then turn the Entry knob to set the l...

Страница 454: ...Error triggers on an inter word gap error Word or Gap Error triggers on either a Word or Gap Error All Errors triggers on any of the above errors All Bits Eye triggers on any bit which will therefore...

Страница 455: ...pe to capture ARINC 429 signals see Setup for ARINC 429 Signals on page 452 To set up ARINC 429 serial decode 1 Press Serial to display the Serial Decode Menu 2 In the submenu accessed by the Settings...

Страница 456: ...oscilloscope is stopped press the Run Stop key to acquire and decode data You can use the horizontal Zoom window for easier navigation of the decoded data See Also Interpreting ARINC 429 Decode on pa...

Страница 457: ...r coded as follows When the decode format is Label SDI Data SSM Label yellow 8 bits displayed in octal SDI blue 2 bits displayed in binary Data white red if parity error 19 bits displayed in the selec...

Страница 458: ...verse order In other words the non Label fields are displayed in the ARINC 429 Word Format while the bits for those fields have the opposite transfer order on the wire ARINC 429 Totalizer The ARINC 42...

Страница 459: ...contains these columns Label the 5 bit label value in octal format SDI the bit values if included in the word decode format Data the data value in binary or hex depending on the base setting SSM the...

Страница 460: ...ob to select the serial slot Serial 1 or Serial 2 on which the ARINC 429 signal is being decoded 3 Press Search then select from these options Label finds the specified label value Label values are al...

Страница 461: ...equires Option COMP or the DSOX4COMP upgrade Setup for UART RS232 Signals To set up the oscilloscope to capture UART RS232 signals 1 Press Label to turn on labels 2 Press Serial 3 Press the Serial sof...

Страница 462: ...tkey to open the UART RS232 Bus Configuration Menu Set the following parameters a Bits Set the number of bits in the UART RS232 words to match your device under test selectable from 5 9 bits b Parity...

Страница 463: ...Trigger softkey then turn the Entry knob to select the serial slot Serial 1 or Serial 2 on which the UART RS232 signals are being decoded 3 Press the Trigger Setup softkey to open the UART RS232 Trigg...

Страница 464: ...bit Rx X Data For use when the device under test data words are 9 bits in length including the alert bit the 9th bit Triggers on a data byte that you specify regardless of the value of the 9th alert b...

Страница 465: ...splayed When displaying words in ASCII the 7 bit ASCII format is used Valid ASCII characters are between 0x00 and 0x7F To display in ASCII you must select at least 7 bits in the Bus Configuration If A...

Страница 466: ...5 If the decode line does not appear on the display press the Serial key to turn it on 6 If the oscilloscope is stopped press the Run Stop key to acquire and decode data You can use the horizontal Zo...

Страница 467: ...ary hex or ASCII When using the 9 bit format all data words are displayed in green including the 9th bit The 9th bit is displayed on the left When a data word value is selected for framing it is displ...

Страница 468: ...t UART RS232 Totalizer The UART RS232 totalizer consists of counters that provide a direct measure of bus quality and efficiency The totalizer appears on screen whenever UART RS232 Decode is ON in the...

Страница 469: ...rrors highlighted in red Parity Error or Unknown Error Aliased data is highlighted in pink When this happens decrease the horizontal time div setting and run again Searching for UART RS232 Data in the...

Страница 470: ...es the 9th alert bit Rx 0 Data For use when the DUT data words are 9 bits in length including the alert bit the 9th bit Finds only when the 9th alert bit is 0 The specified data byte applies to the le...

Страница 471: ...pe to capture USB 2 0 signals 1 Press Serial 2 Press the Serial softkey turn the Entry knob to select the desired slot Serial 1 or Serial 2 and press the softkey again to enable decode 3 Press the Mod...

Страница 472: ...level The threshold voltage level is used in decoding and it will become the trigger level when the trigger type is set to the selected serial decode slot 7 Press Auto Setup to automatically set these...

Страница 473: ...3 Press the Trigger softkey and use the Entry knob to select the USB packet error or event to trigger on SOP Start of Packet triggers on the sync bit at the beginning of the packet low and full speed...

Страница 474: ...en Packet Data Packet Handshake Packet or Special Packet trigger condition a Press the PID softkey to select the desired packet ID for the selected packet type b Press the Base softkey to select the H...

Страница 475: ...y press the Serial key to turn it on 4 If the oscilloscope is stopped press the Run Stop key to acquire and decode data You can use the horizontal Zoom window for easier navigation of the acquired dat...

Страница 476: ...ing USB 2 0 Decode The USB decode display is color coded as follows For Token Packets all but SOF PID yellow OUT IN SETUP PING PID Check yellow when valid red when error detected Address blue Endpoint...

Страница 477: ...hite CRC blue when valid red when error detected For Handshake Packets PID yellow ACK NAK STALL NYET PRE ERR PID Check yellow when valid red when error detected For Split Transaction Token Packets PID...

Страница 478: ...s displayed as red text if the PID check value does not match Addr Address Endp Endpoint Data either the Data of a Data Packet or the various fields of a SPLIT packet Fr Frame frame number of a SOF pa...

Страница 479: ...3 In the Search Menu press Search for then select from these options Token Packet finds token packets with the specified content Data Packet finds data packets with the specified content Handshake Pa...

Страница 480: ...480 Agilent InfiniiVision 4000 X Series Oscilloscopes User s Guide 29 USB 2 0 Triggering and Serial Decode...

Страница 481: ...rary waveforms copying from other sources 299 arbitrary waveforms creating new 293 arbitrary waveforms editing existing 294 Area Full Screen measurement 265 Area N Cycles measurement 265 ARINC 429 ser...

Страница 482: ...41 cursors binary 233 cursors hex 233 cursors manual 232 cursors measure mode 233 cursors track waveform 233 D D 40 132 d dt math function 95 damage shipping 27 data sheet 367 DC channel coupling 82 D...

Страница 483: ...versions 361 flash drive 43 Flat top FFT window 100 FLEX license 375 FlexRay frame counter 411 FlexRay serial decode 409 FlexRay totalizer 411 FlexRay trigger 406 FM frequency modulation waveform gene...

Страница 484: ...erface and Quick Help 61 length control 314 length softkey 312 level trigger 167 LF Reject 208 library labels 159 licenses 375 376 LIN serial decode 399 LIN trigger 397 line voltage 30 Lister 144 load...

Страница 485: ...65 parts replacement 140 passive probes 371 passive probes compensating 35 password network reset 365 password network setting 363 pattern trigger 175 pattern SPI trigger 429 PC connection 332 peak d...

Страница 486: ...scilloscope 216 217 sampling theory 215 sampling overview 215 save 347 save file 333 save files via web interface 357 save segment 313 save setup files 311 save times data 314 Save to 317 save Quick S...

Страница 487: ...Mode 347 trigger output 339 trigger output mask test 275 339 trigger type ARINC 429 453 trigger type CAN 389 trigger type edge 168 trigger type edge then edge 170 trigger type FlexRay 406 trigger typ...

Страница 488: ...aults restoring 307 waveform generator dual channel tracking 307 waveform generator expected output load 300 waveform generator logic presets 300 waveform generator sync pulse 299 waveform generator s...

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