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Agilent Technologies InfiniiVision 3000 3024A MSO-X, User Manual

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Agilent Technologies InfiniiVision 3000 3024A MSO-X User Manual Download Page 187

Acquisition Control

12

Agilent InfiniiVision 3000 X-Series Oscilloscopes User's Guide

187

 

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 33

Aliasing

Summary of Contents for InfiniiVision 3000 3024A MSO-X

Page 1: ...s1 Agilent InfiniiVision 3000 X Series Oscilloscopes User s Guide ...

Page 2: ... 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 Commercial computer software as defined in DFAR 252 227 7014 June 1995 or as a commercial item as defined in FAR 2 101 a or as Restricted computer soft ware as defined in FAR 52 227 19 June 1987 or any equivalent agency regulation or contract ...

Page 3: ...annel digital storage oscilloscope DSO models 2 16 channel and 4 16 channel mixed signal oscilloscope MSO models Table 1 3000 X Series Model Numbers Bandwidths Bandwidth 100 MHz 200 MHz 350 MHz 500 MHz 2 Channel 16 Logic Channels MSO MSO X 3012A MSO X 3032A MSO X 3052A 4 Channel 16 Logic Channels MSO MSO X 3014A MSO X 3024A MSO X 3034A MSO X 3054A 2 Channel DSO DSO X 3012A DSO X 3032A DSO X 3052A ...

Page 4: ...t With the DSOX3ADVMATH option you get these additional math waveforms divide Ax B square absolute value common logarithm natural logarithm exponential base 10 exponential low pass filter high pass filter magnify measurement trend chart logic bus timing and chart logic bus state Reference waveform locations 2 for comparing with other channel or math waveforms Many built in measurements and a measu...

Page 5: ...29 Chapter 9 Labels starting on page 135 When setting up triggers or changing how data is acquired see Chapter 10 Triggers starting on page 141 Chapter 11 Trigger Mode Coupling starting on page 177 Chapter 12 Acquisition Control starting on page 185 Making measurements and analyzing data Chapter 13 Cursors starting on page 203 Chapter 14 Measurements starting on page 213 Chapter 15 Mask Testing st...

Page 6: ... 25 I2S Triggering and Serial Decode starting on page 381 Chapter 26 MIL STD 1553 ARINC 429 Triggering and Serial Decode starting on page 391 Chapter 27 UART RS232 Triggering and Serial Decode starting on page 407 TIP Abbreviated instructions for pressing a series of keys and softkeys Instructions for pressing a series of keys are written in an abbreviated manner Instructions for pressing Key1 the...

Page 7: ...asy Viewing 26 Power On the Oscilloscope 27 Connect Probes to the Oscilloscope 28 Maximum input voltage at analog inputs 28 Do not float the oscilloscope chassis 29 Input a Waveform 29 Recall the Default Oscilloscope Setup 29 Use Auto Scale 30 Compensate Passive Probes 32 Learn the Front Panel Controls and Connectors 33 Front Panel Overlays for Different Languages 40 Learn the Rear Panel Connector...

Page 8: ...fine adjustment setting 56 To position the time reference left center right 56 Searching for Events 57 To set up searches 57 To copy search setups 58 Navigating the Time Base 58 To navigate time 59 To navigate search events 59 To navigate segments 60 3 Vertical Controls To turn waveforms on or off channel or math 62 To adjust the vertical scale 63 To adjust the vertical position 63 To specify chan...

Page 9: ... perform transforms or filters on an arithmetic operation 73 To adjust the math waveform scale and offset 73 Units for Math Waveforms 74 Math Operators 74 Add or Subtract 75 Multiply or Divide 75 Math Transforms 76 Differentiate 77 Integrate 78 FFT Measurement 81 Square Root 88 Ax B 88 Square 89 Absolute Value 90 Common Logarithm 90 Natural Logarithm 91 Exponential 91 Base 10 Exponential 92 Math F...

Page 10: ...files to from a USB storage device 102 6 Digital Channels To connect the digital probes to the device under test 103 Probe cable for digital channels 104 Acquiring waveforms using the digital channels 107 To display digital channels using AutoScale 107 Interpreting the digital waveform display 108 To change the displayed size of the digital channels 109 To switch a single channel on or off 110 To ...

Page 11: ...ching Lister Data 126 8 Display Settings To adjust waveform intensity 129 To set or clear persistence 131 To clear the display 132 To select the grid type 132 To adjust the grid intensity 133 To freeze the display 133 9 Labels To turn the label display on or off 135 To assign a predefined label to a channel 136 To define a new label 137 To load a list of labels from a text file you create 138 To r...

Page 12: ...gger 161 To set up Generic video triggers 166 To trigger on a specific line of video 166 To trigger on all sync pulses 168 To trigger on a specific field of the video signal 168 To trigger on all fields of the video signal 169 To trigger on odd or even fields 170 USB Trigger 173 Serial Trigger 175 11 Trigger Mode Coupling To select the Auto or Normal trigger mode 178 To select the trigger coupling...

Page 13: ...ate 188 Oscilloscope Rise Time 189 Oscilloscope Bandwidth Required 190 Memory Depth and Sample Rate 191 Selecting the Acquisition Mode 191 Normal Acquisition Mode 192 Peak Detect Acquisition Mode 192 Averaging Acquisition Mode 195 High Resolution Acquisition Mode 197 Acquiring to Segmented Memory 197 Navigating Segments 199 Measurements Statistics and Infinite Persistence with Segmented Memory 199...

Page 14: ...217 Voltage Measurements 218 Peak Peak 219 Maximum 219 Minimum 219 Amplitude 219 Top 219 Base 220 Overshoot 221 Preshoot 222 Average 222 DC RMS 223 AC RMS 223 Ratio 225 Time Measurements 225 Period 226 Frequency 226 Counter 227 Width 228 Width 228 Burst Width 228 Duty Cycle 228 Rise Time 229 Fall Time 229 Delay 229 Phase 230 X at Min Y 231 X at Max Y 232 ...

Page 15: ... from a golden waveform Automask 239 Mask Test Setup Options 241 Mask Statistics 244 To manually modify a mask file 245 Building a Mask File 248 How is mask testing done 250 16 Waveform Generator To select generated waveform types and settings 251 To edit arbitrary waveforms 255 Creating New Arbitrary Waveforms 256 Editing Existing Arbitrary Waveforms 257 Capturing Other Waveforms to the Arbitrary...

Page 16: ...er data files 271 To save reference waveform files to a USB storage device 271 To save masks 271 To save arbitrary waveforms 272 To navigate storage locations 272 To enter file names 273 Recalling Setups Masks or Data 274 To recall setup files 274 To recall mask files 274 To recall reference waveform files from a USB storage device 275 To recall arbitrary waveforms 275 Recalling Default Setups 276...

Page 17: ... set up the screen saver 290 To set AutoScale preferences 291 Setting the Oscilloscope s Clock 292 Setting the Rear Panel TRIG OUT Source 292 Performing Service Tasks 293 To perform user calibration 294 To perform hardware self test 296 To perform front panel self test 296 To display oscilloscope information 296 To display the user calibration status 297 To clean the oscilloscope 297 To check warr...

Page 18: ...tilities 311 Setting a Password 312 21 Reference Specifications and Characteristics 315 Measurement Category 315 Oscilloscope Measurement Category 316 Measurement Category Definitions 316 Transient Withstand Capability 317 Maximum input voltage at analog inputs 317 Maximum input voltage at digital channels 317 Environmental Conditions 317 Probes and Accessories 318 Passive Probes 319 Single Ended ...

Page 19: ...s 329 CSV and ASCII XY files 332 CSV and ASCII XY file structure 333 Minimum and Maximum Values in CSV Files 333 Acknowledgements 334 22 CAN LIN Triggering and Serial Decode Setup for CAN Signals 335 CAN Triggering 337 CAN Serial Decode 339 Interpreting CAN Decode 340 CAN Totalizer 341 Interpreting CAN Lister Data 342 Searching for CAN Data in the Lister 343 Setup for LIN Signals 343 LIN Triggerin...

Page 20: ...Interpreting FlexRay Lister Data 358 Searching for FlexRay Data in the Lister 358 24 I2C SPI Triggering and Serial Decode Setup for I2C Signals 361 I2C Triggering 362 I2C Serial Decode 366 Interpreting I2C Decode 367 Interpreting I2C Lister Data 368 Searching for I2C Data in the Lister 369 Setup for SPI Signals 370 SPI Triggering 373 SPI Serial Decode 375 Interpreting SPI Decode 377 Interpreting S...

Page 21: ...IL STD 1553 Lister Data 396 Searching for MIL STD 1553 Data in the Lister 397 Setup for ARINC 429 Signals 398 ARINC 429 Triggering 399 ARINC 429 Serial Decode 401 Interpreting ARINC 429 Decode 403 ARINC 429 Totalizer 404 Interpreting ARINC 429 Lister Data 405 Searching for ARINC 429 Data in the Lister 405 27 UART RS232 Triggering and Serial Decode Setup for UART RS232 Signals 407 UART RS232 Trigge...

Page 22: ...22 Agilent InfiniiVision 3000 X Series Oscilloscopes User s Guide ...

Page 23: ...rn the Rear Panel Connectors 42 Learn the Oscilloscope Display 43 Access the Built In Quick Help 45 This chapter describes the steps you take when using the oscilloscope for the first time Inspect the Package Contents Inspect the shipping container for damage If your shipping container appears to be damaged keep the shipping container or cushioning material until you have inspected the contents of...

Page 24: ...cilloscopes User s Guide 1 Getting Started InfiniiVision 3000 X Series oscilloscope Power cord country of origin determines specific type Oscilloscope probes Two probes for 2 channel models Four probes for 4 channel models Documentation CD ROM ...

Page 25: ...cilloscope 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 probe ground leads qyt 5 5090 4832 Grabber qyt 20 Digital probe replacement parts are listed in the Digital Channels chapter N2862B N2863B or N2890A probes Qty 2 or 4 ...

Page 26: ...gently remove the module from the slot 2 To install a module slide the module into the slot on the back until it is fully seated The module s spring tabs will latch into the slot keeping the module in place Tilt the Oscilloscope for Easy Viewing There are tabs under the oscilloscope s front feet that can be flipped out to tilt the oscilloscope 100 Watts MAX 100 240V 50 60Hz 100 120V 50 60 400Hz WA...

Page 27: ...s ensure that the air intake and exhaust areas are free from obstructions The fan draws air in from the left side and bottom of the oscilloscope and pushes it out behind the oscilloscope When using the oscilloscope in a bench top setting provide at least 2 clearance at the sides and 4 100 mm clearance above and behind the oscilloscope for proper cooling To power on the oscilloscope 1 Connect the p...

Page 28: ...ct the probe s retractable hook tip to the point of interest on the circuit or device under test Be sure to connect the probe ground lead to a ground point on the circuit WARNING Always use a grounded power cord Do not defeat the power cord ground CAUTION Maximum input voltage at analog inputs CAT I 300 Vrms 400 Vpk transient overvoltage 1 6 kVpk 50Ω input 5 Vrms Input protection is enabled in 50 ...

Page 29: ...s the oscilloscope s default settings This places the oscilloscope in a known operating condition The major default settings are CAUTION Do not float the oscilloscope chassis Defeating the ground connection and floating the oscilloscope chassis will probably result in inaccurate measurements and may also cause equipment damage The probe ground lead is connected to the oscilloscope chassis and the ...

Page 30: ...a waveform on the oscilloscope s display similar to this Table 2 Default Configuration Settings Horizontal Normal mode 100 µs div scale 0 s delay center time reference Vertical Analog Channel 1 on 5 V div scale DC coupling 0 V position 1 MΩ impedance Trigger Edge trigger Auto trigger mode 0 V level channel 1 source DC coupling rising edge slope 40 ns holdoff time Display Persistence off 20 grid in...

Page 31: ...t the square wave is not shaped correctly as shown above perform the procedure Compensate Passive Probes on page 32 If you do not see the waveform make sure the probe is connected securely to the front panel channel input BNC and to the left side Demo 2 Probe Comp terminal How AutoScale Works Auto Scale analyzes any waveforms present at each channel and at the external trigger input This includes ...

Page 32: ... oscilloscope channel to which it is connected A poorly compensated probe can introduce significant measurement errors 1 Input the Probe Comp signal see Input a Waveform on page 29 2 Press Default Setup to recall the default oscilloscope setup see Recall the Default Oscilloscope Setup on page 29 3 Press Auto Scale to automatically configure the oscilloscope for the Probe Comp signal see Use Auto S...

Page 33: ...Learn 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 for these keys is directly above them on the display Their functions change as you navigate through the oscilloscope s menus For the following figure refer to the numbered descriptions in the table tha...

Page 34: ...r on press again to switch power off See Power On the Oscilloscope on page 27 2 Softkeys The functions of these keys change based upon the menus shown on the display directly above the keys The Back Up key moves up in the softkey menu hierarchy At the top of the hierarchy the Back Up key turns the menus off and oscilloscope information is shown instead 3 Intensity key Press the key to illuminate i...

Page 35: ...which lets you configure the oscilloscope s I O settings use the file explorer set preferences access the service menu and choose other options See Chapter 19 Utility Settings starting on page 283 Quick Action key Press this key to perform the selected quick action measure all snapshot print save recall freeze display and more See Configuring the Quick Action Key on page 298 Analyze key Press this...

Page 36: ...ine 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 you search for events in the acquired data Navigate keys Press this key to navigate through captured data Time search events or segmented memory acquisitions See Navigating the Time Base on page 58...

Page 37: ...er 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 designation where nn is a one or two digit channel number from 0 to 15 to D The indicates that two channels are overlaid You can rotate the upper knob to select an overlaid channel then rotate the lower knob to position it jus...

Page 38: ...or High Resolution acquisition modes see Selecting the Acquisition Mode on page 191 and use segmented memory see Acquiring to Segmented Memory on page 197 The Display key lets you access the menu where you can enable persistence see To set or clear persistence on page 131 clear the display and adjust the display grid graticule intensity see To adjust the grid intensity on page 133 14 File keys Pre...

Page 39: ... X Series oscilloscopes you can set the input impedance of the analog channels to either 50 Ω or 1 MΩ See To specify channel input impedance on page 64 The InfiniiVision 3000 X Series oscilloscopes also provide the AutoProbe interface The AutoProbe interface uses a series of contacts directly below the channel s BNC connector to transfer information between the oscilloscope and the probe When you ...

Page 40: ...For more information about printing see Chapter 18 Print Screens starting on page 279 You can also use the USB port to update the 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 Simply unplug the USB mass storage device from the oscilloscope when the f...

Page 41: ... part numbers Language 2 Channel Overlay 4 Channel Overlay French 75019 94324 75019 94316 German 75019 94326 75019 94318 Italian 75019 94323 75019 94331 Japanese 75019 94311 75019 94312 Korean 75019 94329 75019 94321 Portuguese 75019 94327 75019 94319 Russian 75019 94322 75019 94315 Simplified Chinese 75019 94328 75019 94320 Spanish 75019 94325 75019 94317 Traditional Chinese 75019 94330 75019 943...

Page 42: ...Web Interface on page 302 VGA video output lets you connect an external monitor or projector to provide a larger display or to provide a display at a viewing position away from the oscilloscope The oscilloscope s built in display remains on even when an external display is connected The video output connector is always active For optimal video quality and performance we recommend you use a shielde...

Page 43: ...ibration on page 294 6 EXT TRIG IN connector External trigger input BNC connector See External Trigger Input on page 182 for an explanation of this feature 7 USB Host port This port functions identically to the USB host port on the front panel USB Host Port is used for saving data from the oscilloscope and loading software updates See also USB Host port see page 40 8 USB Device port This port is f...

Page 44: ...ing signal detail see To adjust waveform intensity on page 129 For more information about display modes see Chapter 8 Display Settings starting on page 129 Information area The information area normally contains acquisition analog channel automatic measurement and cursor results Menu line This line normally contains menu name or other information associated with the selected menu Analog channel se...

Page 45: ...a knob is turned Softkey labels These labels describe softkey functions Typically softkeys let you set up additional parameters for the selected mode or menu Pressing the Back Up key at the top of the menu hierarchy turns off softkey labels and displays additional status information describing channel offset and other configuration parameters Back Quick Help message Press and hold front panel key ...

Page 46: ...user interface and Quick 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 are available English French German Italian Japanese Korean Portuguese Russian Simplified Chinese Spanish and Traditional Chinese ...

Page 47: ...ne adjustment setting 56 To position the time reference left center right 56 Searching for Events 57 Navigating the Time Base 58 The horizontal controls include The horizontal scale and position knobs The Horiz key for accessing the Horizontal Menu The zoom key for quickly enabling disabling the split screen zoom display The Search key for finding events on analog channels or in serial decode The ...

Page 48: ... reference The current sample rate is displayed in the right side information area To adjust the horizontal time div scale 1 Turn the large horizontal scale sweep speed knob marked to change the horizontal time div setting Figure 2 Horizontal Menu Trigger point Sample rate Time reference Delay time Time div Trigger source Trigger level or threshold XY or Roll mode Normal time mode Zoomed time base...

Page 49: ...atus line Changing the delay time moves the trigger point solid inverted triangle horizontally and indicates how far it is from the time reference point hollow inverted triangle These reference points are indicated along the top of the display grid Figure 2 shows the trigger point with the delay time set to 200 µs The delay time number tells you how far the time reference point is located from the...

Page 50: ...fferent levels of abstraction You may want to view both the big picture and the specific little picture details The ability to examine waveform detail after the waveform has been acquired is a benefit generally associated with digital oscilloscopes Often this is simply the ability to freeze the display for the purpose of measuring with cursors or printing the screen Some digital oscilloscopes go o...

Page 51: ...re volts versus current or voltage versus frequency Use the cursors to make measurements on XY mode waveforms For more information about using XY mode for measurements refer to XY Time Mode on page 52 Roll causes the waveform to move slowly across the screen from right to left It only operates on time base settings of 50 ms div and slower If the current time base setting is faster than the 50 ms d...

Page 52: ...two signals of the same frequency with the Lissajous method 1 Connect a sine wave signal to channel 1 and a sine wave signal of the same frequency but out of phase to channel 2 2 Press the AutoScale key press the Horiz key then press Time Mode and select XY 3 Center the signal on the display with the channel 1 and 2 position knobs Use the channel 1 and 2 volts div knobs and the channel 1 and 2 Fin...

Page 53: ... 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 axis Again note the ΔY value 7 Calculate the phase difference using the formula below For example if the first ΔY value is 1 688 and the second ΔY value is 1 031 Figure 4 Phase difference measurements automatic and using cursors sinθ second Δ Y ...

Page 54: ...lly 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 Axis Input in XY Display Mode Blanking When you select the XY display mode the time base is turned off Channel 1 is the X axis input channel 2 is the Y axis input and the rear panel EXT TRIG IN is the Z ax...

Page 55: ...status 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 The delay value which is the time displayed relative to the trigger point is momentarily displayed in the upper right portion of the display when the delay time knob is turned These markers show the...

Page 56: ...e 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 Fine is on When Fine is turned off the Horizontal scale knob changes the time div setting in a 1 2 5 step sequence To position the time reference left center right Time reference is the reference point ...

Page 57: ...h Rise Fall Time Runt and Serial events on the analog channels Setting up searches see To set up searches on page 57 is similar to setting up triggers In fact except for Serial events you can copy search setups to trigger setups and vice versa see To copy search setups on page 58 Searches are different than triggers in that they use the measurement threshold settings instead of trigger levels Foun...

Page 58: ...nt 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 Search Copy Menu Press Copy to Trigger to copy the setup for the selected search type to the same trigger type For example if the current search type is Pulse Width pressing Copy to Trigger copies the ...

Page 59: ...u can press the or keys multiple times to speed up the playback There are three speed levels To navigate search events When acquisitions are stopped you can use the navigation controls to go to found search events set using the Search key and menu see Searching for Events on page 57 1 Press Navigate 2 In the Navigate Menu press Navigate then select Search 3 Press the back and forward keys to go to...

Page 60: ...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 keys to go to the previous or next segment Press the softkey to go to the first segment Press the softkey to go to the last segment Auto to play through segments in an automated fashion In the Auto play mode Press the navigation keys to play backward stop o...

Page 61: ...put impedance 64 To specify bandwidth limiting 65 To change the vertical scale knob s coarse fine adjustment setting 65 To invert a waveform 66 Setting Analog Channel Probe Options 66 The vertical controls include The vertical scale and position knobs for each analog channel The channel keys for turning a channel on or off and accessing the channel s softkey menu The following figure shows the Cha...

Page 62: ...urn the channel on or off and to display the channel s menu When a channel is on its key is illuminated Channel Volts div Channel 1 ground level Trigger source Trigger level or threshold Channel 2 ground level NOTE Turning channels off You must be viewing the menu for a channel before you can turn it off For example if channel 1 and channel 2 are turned on and the menu for channel 2 is being displ...

Page 63: ...ertical 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 about center or ground on page 289 To adjust the vertical position 1 Turn the small vertical position knob to move the channel s waveform up or down on the display The voltage value momentarily displayed in the upper right portion of the display represe...

Page 64: ...ange trigger coupling see To select the trigger coupling on page 180 To specify channel input impedance 1 Press the desired channel key 2 In the Channel Menu press Imped impedance then select either 50 Ohm matches 50 ohm cables commonly used in making high frequency measurements and 50 ohm active probes When 50 Ohm input impedance is selected it is displayed with the channel information on screen ...

Page 65: ...d Accessories Selection Guide part number 5989 6162EN available at www agilent com To specify bandwidth limiting 1 Press the desired channel key 2 In the Channel Menu press the BW Limit softkey to enable or disable bandwidth limiting When bandwidth limit is on the maximum bandwidth for the channel is approximately 20 MHz For waveforms with frequencies below this turning bandwidth limit on removes ...

Page 66: ...ed waveform are inverted Invert affects how a channel is displayed However when using basic triggers the oscilloscope attempts to maintain the same trigger point by changing trigger settings Inverting a channel also changes the result of any math function selected in the Waveform Math Menu or any measurement Setting Analog Channel Probe Options 1 Press the probe s associated channel key 2 In the C...

Page 67: ...skew on page 68 To specify the channel units 1 Press the probe s associated channel key 2 In the Channel Menu press Probe 3 In the Channel Probe Menu press Units then select Volts for a voltage probe Amps for a current probe Channel sensitivity trigger level measurement results and math functions will reflect the measurement units you have selected To specify the probe attenuation This is set auto...

Page 68: ...units as well as the attenuation factor are displayed above the Probe softkey To specify the probe skew When measuring time intervals in the nanoseconds ns range small differences in cable length can affect the measurement Use Skew to remove cable delay errors between any two channels 1 Probe the same point with both probes 2 Press one of the probes associated channel key 3 In the Channel Menu pre...

Page 69: ...he Channel Probe Menu the second softkey from the left is for specifying your probe head and attenuation Repeatedly press this softkey until the probe head selection matches the attenuator you are using The choices are 10 1 single ended browser no attenuator 10 1 differential browser no attenuator 10 1 6 dB Atten single ended browser 10 1 6 dB Atten differential browser 10 1 12 dB Atten single end...

Page 70: ...70 Agilent InfiniiVision 3000 X Series Oscilloscopes User s Guide 3 Vertical Controls For more information on InfiniiMax probes and accessories see the probe s User s Guide ...

Page 71: ... performed on analog channels The resulting math waveform is displayed in light purple You can use a math function on a channel even if you choose not to display the channel on screen You can Perform an arithmetic operation like add subtract or multiply on analog input channels Perform a transform function like differentiate integrate FFT or square root on an analog input channel Perform a transfo...

Page 72: ...nsform function differentiate integrate FFT or square root the result is displayed 5 If you select an arithmetic operator use the Source 2 softkey to select the second source for the arithmetic operation The result is displayed 6 To re size and re position the math waveform see To adjust the math waveform scale and offset on page 73 TIP Math Operating Hints If the analog channel or math function i...

Page 73: ...only available when you select a transform function in the previous step To adjust the math waveform scale and offset 1 Make sure the multiplexed scale and position knobs to the right of the Math key are selected for the math waveform If the arrow to the left of the Math key is not illuminated press the key 2 Use the multiplexed scale and position knobs just to the right of the Math key to re size...

Page 74: ... add subtract or multiply on analog input channels Add or Subtract on page 75 Multiply or Divide on page 75 Math function Units add or subtract V or A multiply V2 A2 or W Volt Amp d dt V s or A s V second or A second dt Vs or As V seconds or A seconds FFT dB decibels See also FFT Units on page 86 square root V1 2 A1 2 or W1 2 Volt Amp When the FFT source is channel 1 2 3 or 4 FFT units will be dis...

Page 75: ...ential measurement or to compare two waveforms If your waveforms DC offsets are larger than the dynamic range of the oscilloscope s input channels you will need to use a differential probe instead See Also Units for Math Waveforms on page 74 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 resu...

Page 76: ...roportional to the current The Divide math function is available with Option ADVMATH or the DSOX3ADVMATH upgrade license See Also Units for Math Waveforms on page 74 Math Transforms 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 77 Integrate on page 78 Figure 6...

Page 77: ...e derivative of the selected source You can use differentiate to measure the instantaneous 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 set acquisition mode to Averaging see Selecting the Acquisition Mode on page 191 d dt plots the derivative of the sele...

Page 78: ...Math Waveforms on page 74 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 integral of the source using the Trapezoidal Rule The equation is Where I integrated waveform Figure 7 Example of Differentiate Function In co Δ t i 0 n yi ...

Page 79: ...o arbitrary constant i data 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 oscilloscope calibration errors can cause the integrate function output to ramp up or down This DC offset correction lets you level the integrate waveform ...

Page 80: ...cilloscopes User s Guide 4 Math Waveforms See Also To perform transforms or filters on an arithmetic operation on page 73 Figure 8 Integrate and Signal Offset 0 V level Integrate without DC offset correction Integrate with DC offset correction ...

Page 81: ...press the Function softkey and select f t press the Operator softkey and select FFT Source 1 selects the source for the FFT See To perform transforms or filters on an arithmetic operation on page 73 for information about using g t as the source Span sets the overall width of the FFT spectrum that you see on the display left to right Divide span by 10 to calculate the number of Hertz per division I...

Page 82: ... Flat Top window for making accurate amplitude measurements of frequency peaks Rectangular good frequency resolution and amplitude accuracy but use only where there will be no leakage effects Use on self windowing waveforms such as pseudo random noise impulses sine bursts and decaying sinusoids Blackman Harris window reduces time resolution compared to a rectangular window but improves the capacit...

Page 83: ...ollowing FFT spectrum was obtained by connecting a 4 V 75 kHz square wave to channel 1 Set the horizontal scale to 50 µs div vertical sensitivity to 1 V div Units div to 20 dBV Offset to 60 0 dBV Center frequency to 250 kHz frequency Span to 500 kHz and window to Hanning NOTE Scale and offset considerations If you do not manually change the FFT scale or offset settings when you turn the horizontal...

Page 84: ...s The number of points acquired for the FFT record can be up to 65 536 and when frequency span is at maximum all points are displayed Once the FFT spectrum is displayed the frequency span and center frequency controls are used much like the controls of a spectrum analyzer to examine the frequency of interest in greater detail Place the desired part of the waveform at the center of the screen and d...

Page 85: ...rtical accuracy on peak measurements Make sure the probe attenuation is set correctly The probe attenuation is set from the Channel Menu if the operand is a channel Set the source sensitivity so that the input signal is near full screen but not clipped Use the Flat Top window Set the FFT sensitivity to a sensitive range such as 2 dB division For best frequency accuracy on peaks Use the Hanning win...

Page 86: ...his requires that the operator have some knowledge as to what the frequency domain should contain and also consider the sampling rate frequency span and oscilloscope vertical bandwidth when making FFT measurements The FFT resolution the quotient of the sampling rate and the number of FFT points is displayed directly above the softkeys when the FFT Menu is displayed Aliasing happens when there are ...

Page 87: ...ncy span goes from 0 to the Nyquist frequency the best way to prevent aliasing is to make sure that the frequency span is greater than the frequencies of significant energy present in the input signal FFT Spectral Leakage The FFT operation assumes that the time record repeats Unless there is an integral number of cycles of the sampled waveform in the record a discontinuity is created at the end of...

Page 88: ...f Square Root Square root calculates 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 To perform transforms or filters on an arithmetic operation on page 73 Units for Math Waveforms on page 74 Ax B The Ax B function available with the DSOX3ADVMATH advanced math measurements license lets you apply...

Page 89: ...e Magnify math visualization function in that the output is likey different than the input See Also Magnify on page 94 Square The square function available with the DSOX3ADVMATH advanced math measurements license calculates the square of the selected source point by point and displays the result Press the Source softkey to select the signal source See Also Square Root on page 88 Figure 11 Example ...

Page 90: ... input to positive values and displays the resulting waveform See Also Square on page 89 Common Logarithm The Common Logarithm log function available with the DSOX3ADVMATH advanced math measurements license performs 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 Natural Logarithm on page 91 Figure 12 ...

Page 91: ...forms 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 90 Exponential The Exponential e x function available with the DSOX3ADVMATH advanced math measurements license performs a transform of the input source See Also Base 10 Exponential on page 92 Figure 13 Example of Natural Log...

Page 92: ...s license performs a transform of the input source See Also Exponential on page 91 Math Filters With the DSOX3ADVMATH advanced math measurements license 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 on the result of an arithmetic operation High Pass and Low Pass Filter on page 93 Figure 14 Example of Base 10 Exponential ...

Page 93: ...display the resut in the math waveform 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 ratio of the input signal s Nyquist frequency and the selected 3 dB cutoff frequency affects how many points are available in the output and under some circumstances th...

Page 94: ... ways of viewing captured data and measurement values Magnify on page 94 Measurement Trend on page 95 Chart Logic Bus Timing on page 96 Chart Logic Bus State on page 97 Magnify The magnify math function available with the DSOX3ADVMATH advanced math measurements license lets you display an existing input source at different vertical settings to provide more vertical detail See Also Ax B on page 88 ...

Page 95: ...t values for a waveform based on measurement threshold settings as the waveform progresses across the screen For every cycle a measurement is made and the value is displayed on the screen for the cycle 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 Figure 17 Example...

Page 96: ...output is a hole that is no value until a measurement can be made Chart Logic Bus Timing The Chart Logic Bus Timing function available with the DSOX3ADVMATH advanced math measurements license displays bus data values as an analog waveform like a D A conversion When the bus value is transitioning the function output is the bus s last stable state Use the Units Code softkey to specify the analog val...

Page 97: ...on available with the DSOX3ADVMATH advanced math measurements license displays bus data values sampled on a clock signal s edge as an analog waveform like a D A conversion Use the Clock softkey to select the clock signal Use the Slope softkey to select the edge of the clock signal to be used Use the More Chart softkey to open a submenu for specifying the analog value equivalent of each bus value i...

Page 98: ...key to specify the analog value equivalent of each increment in the bus data value Use the 0 Offset softkey to specify the analog value equivalent of a bus data value of zero Use the Units softkey to specify the type of values the bus data represents volts amps etc See Also Chart Logic Bus Timing on page 96 ...

Page 99: ... 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 is lit you can use the knobs to scale and position reference waveforms There is also a skew adjustment for reference waveforms Reference waveform scale offset and skew information can optionally be in...

Page 100: ...u press the Ref softkey and turn the Entry knob to select the desired reference waveform location 3 Press the Clear R1 R2 softkey to clear the reference waveform location Reference waveforms are also cleared by a Factory Default or Secure Erase see Chapter 17 Save Recall Setups Screens Data starting on page 263 To display a reference waveform 1 Press the Ref key to turn on reference waveforms 2 In...

Page 101: ...s 1 Make sure the multiplexed scale and position knobs to the right of the Ref key are selected for the reference waveform If the arrow to the left of the Ref key is not illuminated press the key 2 Turn the upper multiplexed knob to adjust the reference waveform scale 3 Turn the lower multiplexed knob to adjust the reference waveform position To adjust reference waveform skew Once reference wavefo...

Page 102: ... disable reference waveform information on the oscilloscope display 4 Press the Transparent softkey to enable or disable transparent information backgrounds This setting is also used for other oscilloscope information on the display like mask test statistics etc To save recall reference waveform files to from a USB storage device Analog channel math or reference waveforms can be saved to a referen...

Page 103: ...e the displayed size of the digital channels 109 To reposition a digital channel 111 To change the logic threshold for digital channels 110 To display digital channels as a bus 112 Digital channel signal fidelity Probe impedance and grounding 115 To replace digital probe leads 120 This chapter describes how to use the digital channels of a Mixed Signal Oscilloscope MSO The digital channels are ena...

Page 104: ...cable to the DIGITAL Dn D0 connector on the front panel of 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 Connect the ground lead on each set of channels each pod using a probe grabber The ground lead improves signal fidelity to the oscilloscope ensuring accurate measurements Off CAUTION Probe cable ...

Page 105: ... Series Oscilloscopes User s Guide 105 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 test Channel Pod Ground Circuit Ground Grabber ...

Page 106: ...l 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 have connected all points of interest Grabber Signal Ground Signals Ground ...

Page 107: ...ion 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 oscilloscope stores a 1 in sample memory otherwise it stores a 0 To display digital channels using AutoScale When signals are connected to the digital channels be sure to connect the ground leads AutoScale quickly configures and displays ...

Page 108: ...toScale 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 return the oscilloscope to its previous settings See also How AutoScale Works on page 31 To set the instrument to the factory default configuration press the Default Setup key Interpreting the digital waveform display The fo...

Page 109: ...vely toggling logic states Any channel that is turned off will be grayed out in the activity indicator To change the displayed size of the digital channels 1 Press the Digital key 2 Press the size softkey to select how the digital channels are displayed Activity indicators Delay time Time div Trigger type and source Threshold level Digital channel identifiers Waveform size Turn individual channels...

Page 110: ...annels The Digital Channel Menu is displayed above the softkeys If you want to switch the digital channels off and the Digital Channel Menu is not already displayed you must push the Digital key twice to switch the digital channels off The first push displays the Digital Channel Menu and the second push switches the channels off To switch groups of channels on or off 1 Press the Digital key on the...

Page 111: ...c threshold There is one User softkey for each group of channels To reposition a digital channel 1 Make sure the multiplexed scale and position knobs to the right of the key are selected for digital channels If the arrow to the left of the Digital key is not illuminated press the key 2 Use the multiplexed Select knob to select the channel The selected waveform is highlighted in red 3 Use the multi...

Page 112: ...t on Use the Channel softkey and the Entry knob to select individual channels to be included in the bus You can rotate the Entry knob and push it or push the softkey to select channels You can also press the Select Deselect D15 D8 and Select Deselect D7 D0 softkeys to include or exclude groups of eight channels in each bus If the bus display is blank completely white or if the display includes you...

Page 113: ...es 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 Press the Source softkey and select Bus1 or Bus2 4 Use the Entry knob and the X1 and X2 softkeys to position the cursors where you want to read the bus values ...

Page 114: ... 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 levels in the pattern specification or when a transition indicator rising edge or falling edge are included in the pattern specification A byte that consists of all don t cares X will be displayed in t...

Page 115: ...ems 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 affect the accuracy of the data to the measurement instrument The design of the probes minimizes the first problem while the second is easily addressed by good probing practices Digital channel values ...

Page 116: ...the 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 with the stray tip capacitance to ground While this results in an input impedance specification that is an accurate model for DC and low frequencies the high frequency model of the probe input is more ...

Page 117: ...hown 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 capacitance which is generally small 1 pF sets the final break point on the impedance chart Figure 22 High Frequency Probe Equivalent Circuit ...

Page 118: ...des 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 high frequencies create large common mode voltages at the probe input The voltage generated behaves as if this path were an inductor according to the equation Figure 23 Impedance versus Frequency for Bo...

Page 119: ...esult 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 mode voltage longer ground returns also degrade the pulse fidelity of the probe system Rise time is increased and ringing due to the undamped LC circuit at the input of the probe is also increased Bec...

Page 120: ...ements 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 the instrument s probe system This will ease measurement setup and ensure a repeatable method for obtaining test data The 01650 61607 16 channel logic probe cable and the 01650 63203 termination ada...

Page 121: ...n N6450 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 leads qty 1 5959 9333 Replacement probe leads qty 5 also contains 01650 94309 probe labels 5959 9334 Replacement 2 inch probe grounds qty 5 5959 9335 Replacement pod ground leads qty 5 5090 4833 ...

Page 122: ...122 Agilent InfiniiVision 3000 X Series Oscilloscopes User s Guide 6 Digital Channels ...

Page 123: ... 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 set in the Signals Menu Press the Serial key then the Signals softkey Serial Decode Options Agilent s hardware accelerated serial decode options can be installed when the oscilloscope is manufactured or added later The following serial decode licens...

Page 124: ...whether these licenses are installed on your oscilloscope see To display oscilloscope information on page 296 To order serial decode licenses go to www agilent com and search for the product number for example DSOX3AUTO or contact your local Agilent Technologies representative see www agilent com find contactus Lister Lister is a powerful tool for investigating protocol failures You can use Lister...

Page 125: ...ge number of packets the Lister may not be able to display information for all packets However when you press the Single key the Lister will contain all on screen serial decode information 5 Press the Scroll Lister softkey and use the Entry knob to scroll through the data Time tags in the Time column indicate the event time relative to the trigger point The time tags of events that are shown in th...

Page 126: ... changing the horizontal delay will scroll the Lister Press the Scroll Lister softkey and use the Entry knob to scroll though data rows in the Lister display Press the Time Ref softkey and use the Entry knob to select whether the Time column in the Lister display shows times relative to the trigger or relative to the previous packet row Searching Lister Data When serial decode is enabled you can u...

Page 127: ...ge 405 Searching for CAN Data in the Lister on page 343 Searching for FlexRay Data in the Lister on page 358 Searching for I2C Data in the Lister on page 369 Searching for I2S Data in the Lister on page 389 Searching for LIN Data in the Lister on page 350 Searching for MIL STD 1553 Data in the Lister on page 397 Searching for SPI Data in the Lister on page 378 Searching for UART RS232 Data in the ...

Page 128: ...128 Agilent InfiniiVision 3000 X Series Oscilloscopes User s Guide 7 Serial Decode ...

Page 129: ...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 occurring events Reducing the intensity can expose more detail in complex signals as shown in the following figures 1 Press the Intensity key to illuminate it This key is located just below the Entry knob 2 Turn the Entry knob to...

Page 130: ...130 Agilent InfiniiVision 3000 X Series Oscilloscopes User s Guide 8 Display Settings Figure 25 Amplitude Modulation Shown at 100 Intensity Figure 26 Amplitude Modulation Shown at 40 Intensity ...

Page 131: ...ure Waveforms softkey to perform a single shot infinite persistence A single acquisition s data is displayed with reduced intensity and it remains on the display until you clear persistence or clear the display Persistence infinite presistence Results of previous acquisitions are never erased Use infinite persistence to measure noise and jitter to see the worst case extremes of varying waveforms t...

Page 132: ...an also configure the Quick Action key to clear the display See Configuring the Quick Action Key on page 298 To select the grid type When the Video trigger type is selected see Video Trigger on page 161 and the vertical scaling of at least one displayed channel is 140 mV div the Grid softkey lets you select from these grid types Full the normal oscilloscope grid mV shows vertical grids labeled on ...

Page 133: ...orresponds to the vertical sensitivity shown in the status line at the top of the display Each major horizontal division in the grid corresponds to the time div shown in the status line at the top of the display 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 298 1 Once the Quick ...

Page 134: ...134 Agilent InfiniiVision 3000 X Series Oscilloscopes User s Guide 8 Display Settings ...

Page 135: ...o the factory default 139 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 digital channels on MSO models To turn the label display on or off 1 Press the Label key on the front panel This turns on labels for the displayed analog and digital channels Labels are displayed at the left edge...

Page 136: ...uide 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 press the Channel softkey to select a channel for label assignment ...

Page 137: ...the Apply New Label softkey to assign the label to your selected channel 5 Repeat the above procedure for each predefined label you want to assign to a channel To define a new label 1 Press the Label key 2 Press the Channel softkey then turn the Entry knob or successively press the softkey to select a channel for label assignment The channel does not have to be turned on to have a label assigned t...

Page 138: ...lloscope automatically increments the digit and displays the modified label in the New label field after you press the Apply New Label softkey Therefore you only need to select a new channel and press the Apply New Label softkey again to assign the label to the channel Only the original label is saved in the label list This feature makes it easier to assign successive labels to numbered control li...

Page 139: ... is in the library and you make a new label called A12345 the new label is not added to the library When you save a new user defined label the new label will replace the oldest label in the list Oldest is defined as the longest time since the label was last assigned to a channel Any time you assign any label to a channel that label will move to the newest in the list Thus after you use the label l...

Page 140: ...140 Agilent InfiniiVision 3000 X Series Oscilloscopes User s Guide 9 Labels ...

Page 141: ... 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 for analog channel edge detection by turning the Trigger Level knob In addition to the edge trigger type you can also set up triggers on rise fall times Nth edge bursts patterns pulse widths runt pulses setup a...

Page 142: ...oscope setup see Chapter 17 Save Recall Setups Screens Data starting on page 263 Triggers General Information A triggered waveform is one in which the oscilloscope begins tracing displaying the waveform from the left side of the display to the right each time a particular trigger condition is met This provides stable display of periodic signals such as sine waves and square waves as well as nonper...

Page 143: ...on the front panel then press the Thresholds softkey to set the threshold level TTL CMOS ECL or user defined for the selected digital channel group The threshold value is displayed in the upper right corner of the display The line trigger level is not adjustable This trigger is synchronized with the power line supplied to the oscilloscope Forcing a Trigger The Force Trigger key causes a trigger on...

Page 144: ...tal channels minus one External triggers on the rear panel EXT TRIG IN signal Line triggers at the 50 level of the rising or falling edge of the AC power source signal WaveGen triggers at the 50 level of the rising edge of the waveform generator output signal Not available when the DC Noise or Cardiac waveforms are selected You can choose a channel that is turned off not displayed as the source fo...

Page 145: ...ther edge mode is useful when you want to trigger on any activity of a selected source All modes operate up to the bandwidth of the oscilloscope except Either edge mode which has a limitation Either edge mode will trigger on Constant Wave signals up to 100 MHz but can trigger on isolated pulses down to 1 2 oscilloscope s bandwidth NOTE MegaZoom Technology Simplifies Triggering With the built in Me...

Page 146: ...n 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 Trigger Menu press the Trigger softkey then turn the Entry knob to select Edge then Edge 3 Press the Sources softkey 4 In the Edge then edge Sources Menu ...

Page 147: ...lds to set the threshold level for digital channels The value of the trigger level or digital threshold is displayed in the upper right corner of the display 5 Press the Back Up key to return to the Trigger Menu 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 t...

Page 148: ...or analog channels turn the Trigger Level knob For digital channels press the Digital key and select Thresholds to set the threshold level The value of the trigger level or digital threshold is displayed in the upper right corner of the display 5 Press the pulse polarity softkey to select positive or negative polarity for the pulse width you want to capture The selected pulse polarity is displayed...

Page 149: ...e to trigger on a pulse width that is Less than a time value For example for a positive pulse if you set t 10 ns Greater than a time value For example for a positive pulse if you set t 10 ns Within a range of time values For example for a positive pulse if you set t 10 ns and t 15 ns 7 Select the qualifier time set softkey or then rotate the Entry knob to set the pulse width qualifier time The qua...

Page 150: ...gical AND combination of the channels Each channel can have a value of 0 low 1 high or don t care X A rising or falling edge can be specified for one channel included in the pattern You can also trigger on a hex bus value as described on Hex Bus Pattern Trigger on page 153 1 Press the Trigger key 2 In the Trigger Menu press the Trigger softkey then turn the Entry knob to select Pattern 3 Press the...

Page 151: ... 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 press the Channel softkey or rotate the Entry knob the channel you select is highlighted in the Pattern line directly above the softkeys and in the upper right corner of the display next to Pat Adjust the trigger level for the selecte...

Page 152: ... 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 not trigger The rising edge or falling edge softkey sets the pattern to an edge on the selected channel Only one rising or falling edge can be specified in the pattern When an edge is specified the osc...

Page 153: ...oftkey 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 information regarding digital bus display when Pattern triggering see Bus values are displayed when using Pattern trigger on page 114 OR Trigger The OR trigger mode triggers when any one or more of the spe...

Page 154: ... 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 of the display next to the OR gate symbol Adjust the trigger level for the selected analog channel by turning the Trigger Level knob Press the Digital key and select Thresholds to set the threshold le...

Page 155: ...dge selected by the Slope softkey press the Set all Edges softkey Rise Fall Time Trigger The Rise Fall Time trigger looks for a rising or falling transition from one level to another level in greater than or less than a certain amount of time 1 Press the Trigger key 2 In the Trigger Menu press the Trigger softkey then turn the Entry knob to select Rise Fall Time High level Low level Rising edge ti...

Page 156: ... the Trigger 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 between High and Low selection 7 Press the Qualifier softkey 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 ...

Page 157: ...e Trigger key 2 In the Trigger Menu press the Trigger softkey then turn the Entry knob to select Nth Edge Burst 3 Press the Source softkey and turn the Entry knob to select 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 the Entry knob to which edge numb...

Page 158: ...r A positive runt pulse crosses through a lower 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 the Trigger softkey then turn the Entry knob to select Runt High level Low level Positive runt pulse Negative runt pulse ...

Page 159: ...Trigger 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 between High and Low selection 7 Press the Qualifier softkey to toggle between less than greater than or None This lets you specify that a runt pulse be less than or greater than a certain width 8 If y...

Page 160: ...elect 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 tevel for the clock signal using the Trigger Level knob 5 Press the Rising Edge or Falling Edge softkey to specify the clock edge being used 6 Press the Data softkey then turn the Entry knob to select the input channel with the data signal 7 Set th...

Page 161: ...oduces triggers based on the video trigger settings you have selected The oscilloscope s MegaZoom IV technology gives you bright easily viewed displays of any part of the video waveform Analysis of video waveforms is simplified by the oscilloscope s ability to trigger on any selected line of the video signal 1 Press the Trigger key NOTE It is important when using a 10 1 passive probe that the prob...

Page 162: ... Trigger Level knob does not change the trigger level because the trigger level is automatically set to the sync pulse Trigger coupling is automatically set to TV in the Trigger Mode and Coupling Menu 4 Press the sync polarity softkey to set the Video trigger to either positive or negative sync polarity 5 Press the Settings softkey NOTE Provide Correct Matching Many video signals are produced from...

Page 163: ...nc Pulse NTSC Interlaced Bi level PAL Interlaced Bi level PAL M Interlaced Bi level SECAM Interlaced Bi level Standard Type Sync Pulse Generic Interlaced Progressive Bi level Tri level EDTV 480p 60 Progressive Bi level EDTV 567p 50 Progressive Bi level HDTV 720p 50 Progressive Tri level HDTV 720p 60 Progressive Tri level HDTV 1080p 24 Progressive Tri level HDTV 1080p 25 Progressive Tri level HDTV ...

Page 164: ... HDTV standards unchanged for Generic Horizontal delay is set so that trigger is at first horizontal division from the left unchanged for Generic You can also press Analyze Features and then select Video to quickly access the video triggering automatic set up and display options 8 Press the Mode softkey to select the portion of the video signal that you would like to trigger on The Video trigger m...

Page 165: ...ses to familiarize you with video triggering These exercises use the NTSC video standard To trigger on a specific line of video on page 166 To trigger on all sync pulses on page 168 To trigger on a specific field of the video signal on page 168 To trigger on all fields of the video signal on page 169 To trigger on odd or even fields on page 170 Video standard Field 1 Field 2 Alt Field NTSC 1 to 26...

Page 166: ...stment to the sync time of the probed video signal allows the Edge function to count only lines and not double count during equalization Additionally the Field Holdoff can be adjusted so that the oscilloscope triggers once per frame Similarly for progressive video with a tri level sync enabling the Horiz Sync control and setting the Horiz Sync adjustment to the sync time of the probed video signal...

Page 167: ... then press the Standard softkey to select the appropriate TV standard NTSC 4 Press the Mode softkey and select the TV field of the line you want to trigger on You can choose Line Field1 Line Field2 or Line Alternate 5 Press the Line softkey and select the number of the line you want to examine NOTE Alternate Triggering If Line Alternate is selected the oscilloscope will alternately trigger on the...

Page 168: ...oftkey then turn the Entry knob to select Video 3 Press the Settings softkey then press the Standard softkey to select the appropriate TV standard 4 Press the Mode softkey and select All Lines To trigger on a specific field of the video signal To examine the components of a video signal trigger on either Field 1 or Field 2 available for interleaved standards When a specific field is selected the o...

Page 169: ...ftkey and select Field1 or Field2 To trigger on all fields of the video signal To quickly and easily view transitions between fields 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 3 Press the Settings softkey then press the Standard softkey to se...

Page 170: ...ess the Trigger key 2 In the Trigger Menu press the Trigger softkey then turn the Entry knob to select Video 3 Press the Settings softkey then press the Standard softkey to select the appropriate TV standard 4 Press the Mode softkey and select Field1 or Field2 The trigger circuits look for the position of the start of Vertical Sync to determine the field But this definition of field does not take ...

Page 171: ...s by using the Field Holdoff softkey in the Video Trigger Menu Press the Field Holdoff softkey and use the Entry knob to adjust the holdoff in half field increments until the oscilloscope triggers on only one phase of the color burst A quick way to synchronize to the other phase is to briefly disconnect the signal and then reconnect it Repeat until the correct phase is displayed When holdoff is ad...

Page 172: ...me 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 HDTV 720p 50 10 ms HDTV 720p 60 8 35 ms HDTV 1080p 24 20 835 ms HDTV 1080p 25 20 ms HDTV 1080p 30 20 ms HDTV 1080p 50 16 67 ms HDTV 1080p 60 8 36 ms HDTV 1080i 50 10 ms HDTV 1080i 60 8 35 ms ...

Page 173: ...d Exit Sus on the differential USB data lines D and D USB Low Speed and Full Speed are supported by this trigger 1 Press Default Setup 2 Press the Label key to switch labels on 3 Turn on any analog or digital channels that you will be using for the USB signals 4 Press the Trigger key Figure 32 Using Field Holdoff to Synchronize to Color Field 1 or 3 Field 1 mode End of packet trigger D D Bus Idle ...

Page 174: ...the end of the SE0 portion of the EOP RC Reset Complete triggers when SE0 is 10 ms Suspend Enter Suspend triggers when the bus is idle 3 ms Exit Sus Exit Suspend triggers when exiting an idle state 10 ms This is used to see the suspend resume transition 7 Press the Speed softkey to select the speed of the transaction being probed You may select Low Speed 1 5 Mb s or Full Speed 12 Mb s 8 Press the ...

Page 175: ...ted the oscilloscope s digital source channels to the D and D signals this applies to MSO model oscilloscopes only Press the Digital key and select Thresholds to set an appropriate threshold level for the digital channels The value of the trigger level or digital threshold is displayed in the upper right corner of the display Serial Trigger With serial decode option licenses see Serial Decode Opti...

Page 176: ...176 Agilent InfiniiVision 3000 X Series Oscilloscopes User s Guide 10 Triggers ...

Page 177: ...you 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 trigger path Second reduce the noise on the displayed waveform 1 Connect a signal to the oscilloscope and obtain a stable display 2 Remove the noise from the trigger path by turning on high frequency rej...

Page 178: ...the Auto and Normal trigger modes See Configuring the Quick Action Key on page 298 Triggering and the Pre and Post Trigger Buffers After the oscilloscope starts running after pressing Run or Single or changing the trigger condition the oscilloscope first fills the pre trigger buffer Then after the pre trigger buffer is filled the oscilloscope starts searching for a trigger and sampled data continu...

Page 179: ... to Use Auto Trigger Mode The Auto trigger mode is appropriate when Checking DC signals or signals with unknown levels or activity When trigger conditions occur often enough that forced triggers are unnecessary When to Use Normal Trigger Mode The Normal trigger mode is appropriate when You only want to acquire specific events specified by the trigger settings Triggering on an infrequent signal fro...

Page 180: ...high pass filter in the External Trigger input path is 50 Hz for all models Use AC coupling to get a stable edge trigger when your waveform has a large DC offset LF low frequency Reject coupling adds a high pass filter with the 3 dB point at 50 kHz in series with the trigger waveform Low frequency reject removes any unwanted low frequency components from a trigger waveform such as power line frequ...

Page 181: ...y 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 Menu press the Noise Rej softkey to enable or disable To enable or disable trigger HF Reject HF Reject adds a 50 kHz low pass filter in the trigger path to remove high frequency components from the trigger waveform You can use HF Reject to remove high frequenc...

Page 182: ...ng 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 correct holdoff setting is typically slightly less than one repetition of the waveform Set the holdoff to this time to generate a unique trigger point for a repetitive waveform Changing the time base settings does not...

Page 183: ...n 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 turn the entry knob to specify the probe attenuation The attenuation factor can be set from 0 1 1 to 1000 1 in a 1 2 5 sequence The probe attenuation factor must be set properly for measurements to be ...

Page 184: ...184 Agilent InfiniiVision 3000 X Series Oscilloscopes User s Guide 11 Trigger Mode Coupling ...

Page 185: ...un Stop and Single When the Run Stop key is green the oscilloscope is running that is acquiring data when trigger conditions are met To stop acquiring data press Run Stop When stopped the last acquired waveform is displayed When the Run Stop key is red data acquisition is stopped Stop is displayed next to the trigger type in the status line at the top of the display To start acquiring data press R...

Page 186: ...cord Length The maximum data record length is greater for a single acquisition than when the oscilloscope is running or when the oscilloscope is stopped after running Single Single acquisitions always use the maximum memory available at least twice as much memory as acquisitions captured when running and the oscilloscope stores at least twice as many samples At slower time div settings because the...

Page 187: ...rate 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 the maximum frequency fMAX in order to have the signal be uniquely reconstructed without aliasing fMAX fS 2 Nyquist frequency fN folding frequency Aliasing Aliasing occurs when signals are under sam...

Page 188: ...le 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 signals have frequency components above the fundamental frequency square waves are made up of sine waves at the fundamental frequency and an infinite number of odd harmonics and typically for 1 Ghz bandwidth...

Page 189: ... pdf 5989 5732EN pdf Oscilloscope Rise Time Closely related to an oscilloscope s bandwidth specification is its rise time specification Oscilloscopes with a Gaussian type frequency response have an approximate rise time of 0 35 fBW based on a 10 to 90 criterion An oscilloscope s rise time is not the fastest edge speed that the oscilloscope can accurately measure It is the fastest edge speed the os...

Page 190: ...eed Digital Design A Handbook of Black Magic all fast edges have an infinite spectrum of frequency components However there is an inflection or knee in the frequency spectrum of fast edges where frequency components higher than fknee are insignificant in determining the shape of the signal fknee 0 5 signal rise time based on 10 90 thresholds fknee 0 4 signal rise time based on 20 80 thresholds 3 U...

Page 191: ...e 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 slower time div settings At slower time div settings the effective sample rate drops and the effective sample period increases because the acquisition time increases and the oscilloscope s digitizer is ...

Page 192: ...195 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 Acquisition Mode on page 197 Normal Acquisition Mode In Normal mode at slower time div settings extra samples are decimated in other words some are thrown away This mode yields the best display for most w...

Page 193: ...w 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 Normal acquire mode making them easier to see To characterize the glitch use the cursors or the automatic measurement capabilities of the oscilloscope Figure 36 Sine With Glitch Normal Mode ...

Page 194: ...s the display with new acquisitions but does not erase previous acquisitions New sample points are shown at normal intensity while previous acquisitions are displayed at reduced intensity Waveform persistence is not kept beyond the display area boundary Press the Clear Display softkey to erase previously acquired points The display will accumulate points until Persistence is turned off 4 Character...

Page 195: ...A higher number of averages reduces noise more and increases vertical resolution The higher the number of averages the slower the displayed waveform responds to waveform changes You must compromise between how quickly the waveform responds to changes and how much you want to reduce the displayed noise on the signal To use the Averaging mode 1 Press the Acquire key then press the Acq Mode softkey u...

Page 196: ...196 Agilent InfiniiVision 3000 X Series Oscilloscopes User s Guide 12 Acquisition Control Figure 38 Random noise on the displayed waveform Figure 39 128 Averages used to reduce random noise ...

Page 197: ... greater the number of samples that are averaged together for each display point High Resolution mode can be used on both single shot and repetitive signals and it does not slow waveform update because the computation is done in the MegaZoom custom ASIC High Resolution mode limits the oscilloscope s real time bandwidth because it effectively acts like a low pass filter Acquiring to Segmented Memor...

Page 198: ... details 2 Press the Acquire key in the Waveform section 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 knob to select the number of segments into which you would like to divide the oscilloscope s memory Memory can be divided into as few as two segment...

Page 199: ...ry knob to display the desired segment along with a time tag indicating the time from the first trigger event You can also navigate segments using the Navigate key and controls See To navigate segments on page 60 Measurements Statistics and Infinite Persistence with Segmented Memory To perform measurements and view statistical information press Meas and set up your desired measurements see Chapter...

Page 200: ...gmented Memory Re Arm Time After each segment fills the oscilloscope re arms and is ready to trigger in about 1 µs Remember though for example if the horizontal time per division control is set to 5 µs div and the Time Reference is set to Center it will take at least 50 µs to fill all ten divisions and re arm That is 25 µs to capture pre trigger data and 25 µs to capture post trigger data Saving D...

Page 201: ...Be sure to set the Length control to capture enough points to accurately represent the captured data When the oscilloscope is busy saving multiple segments progress is displayed in the upper right area of the display For more information see To save CSV ASCII XY or BIN data files on page 266 ...

Page 202: ...202 Agilent InfiniiVision 3000 X Series Oscilloscopes User s Guide 12 Acquisition Control ...

Page 203: ...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 can be used to measure time s frequency 1 s phase and ratio The X1 cursor is the short dashed vertical line and the X2 cursor is the long dashed vertical line When used with the FFT math function as a ...

Page 204: ...es 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 softkey menu area The difference between Y1 and Y2 ΔY is displayed in the Cursors box in the right side information area To make cursor measurements 1 Connect a signal to the oscilloscope and obtain a stable...

Page 205: ...are displayed above the softkeys in hexadecimal Manual and Track Waveform modes can be used on waveforms that are displayed on the analog input channels including math functions Binary and Hex modes apply to digital signals of MSO oscilloscope models In Hex and Binary modes a level can be displayed as 1 higher than trigger level 0 lower than trigger level indeterminate state or X don t care In Bin...

Page 206: ...oftkey to select Seconds s Hz 1 s Phase when selected use the Use X Cursors softkey to set the current X1 location as 0 degrees and the current X2 location as 360 degrees Ratio when selected use the Use X Cursors softkey to set the current X1 location as 0 and the current X2 location as 100 You can press the Y Units softkey to select Base the same units used for the source waveform Ratio when sele...

Page 207: ...Cursors 13 Agilent InfiniiVision 3000 X Series Oscilloscopes User s Guide 207 Cursor Examples Figure 40 Cursors used to measure pulse widths other than middle threshold points ...

Page 208: ...t InfiniiVision 3000 X Series Oscilloscopes User s Guide 13 Cursors Expand the display with Zoom mode then characterize the event of interest with the cursors Figure 41 Cursors measure frequency of pulse ringing ...

Page 209: ...ursors 13 Agilent InfiniiVision 3000 X Series Oscilloscopes User s Guide 209 Put the X1 cursor on one side of a pulse and the X2 cursor on the other side of the pulse Figure 42 Cursors track Zoom window ...

Page 210: ...iiVision 3000 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 43 Measuring pulse width with cursors ...

Page 211: ...Cursors 13 Agilent InfiniiVision 3000 X Series Oscilloscopes User s Guide 211 Figure 44 Moving the cursors together to check pulse width variations ...

Page 212: ...212 Agilent InfiniiVision 3000 X Series Oscilloscopes User s Guide 13 Cursors ...

Page 213: ... area on the right hand side of the screen Cursors are turned on to show the portion of the waveform being measured for the most recently selected measurement bottom most on the right side measurement area NOTE Post Acquisition Processing In addition to changing display parameters after the acquisition you can perform all of the measurements and math functions after the acquisition Measurements an...

Page 214: ...sured Only channels math functions or reference waveforms that are displayed are available for measurements If a portion of the waveform required for a measurement is not displayed or does not display enough resolution to make the measurement the result will display No Edges Clipped Low Signal value or value or a similar message to indicate that the measurement may not be reliable 3 Press the Type...

Page 215: ...nt statistics are displayed See Measurement Statistics on page 236 6 To turn off measurements press the Meas key again Measurements are erased from the display 7 To stop making one or more measurements press the Clear Meas softkey and choose the measurement to clear or press Clear All After all measurements have been cleared when Meas is pressed again the default measurements will be Frequency and...

Page 216: ...on page 228 Counter on page 227 Yes Not valid for math waveforms Delay on page 229 Measures between two sources Press Settings to specify the second source Duty Cycle on page 228 Yes Fall Time on page 229 Frequency on page 226 Yes Maximum on page 219 Yes Minimum on page 219 Yes Rising Edge Count on page 233 Falling Edges Count on page 233 Positive Pulse Count on page 232 Negative Pulse Count on pa...

Page 217: ...t type displays a popup containing a snapshot of all the single waveform measurements Phase on page 230 Measures between two sources Press Settings to specify the second source Preshoot on page 222 Ratio on page 225 Measures between two sources Press Settings to specify the second source Rise Time on page 229 DC RMS on page 223 AC RMS on page 223 Top on page 219 Width on page 228 Yes Width on page...

Page 218: ... Key on page 298 Voltage Measurements The following figure shows the voltage measurement points Measurement units for each input channel can be set to Volts or Amps using the channel Probe Units softkey See To specify the channel units on page 67 The units of math waveforms are described in Units for Math Waveforms on page 74 Peak Peak on page 219 Amplitude Maximum Minimum Base Top Peak Peak ...

Page 219: ...he Y cursors show the values being measured Maximum Maximum is the highest value in the waveform display The Y cursor shows the value being measured Minimum Minimum is the lowest value in the waveform display The Y cursor shows the value being measured Amplitude The Amplitude of a waveform is the difference between its Top and Base values The Y cursors show the values being measured Top The Top of...

Page 220: ... a pulse for a Top measurement You may need to change the measurement window setting so that the measurement is made in the lower Zoom window See Measurement Window with Zoom Display on page 236 Base The Base of a waveform is the mode most common value of the lower part of the waveform or if the mode is not well defined the base is the same as Minimum The Y cursor shows the value being measured Fi...

Page 221: ...ition expressed as a percentage of Amplitude The X cursors show which edge is being measured edge closest to the trigger reference point Figure 46 Automatic Overshoot measurement Rising edge overshοot local Maximum D Top Amplitude 100 Falling edge overshοot Base D local Minimum Amplitude 100 Overshoot local Maximum local Minimum Base Top Overshoot ...

Page 222: ...t ith point being measured n number of points in measurement interval The Full Screen measurement interval variation measures the value on all displayed data points The N Cycles measurement interval 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 the wavefor...

Page 223: ... measured AC RMS AC RMS is the root mean square value of the waveform with the DC component removed It is useful for example for measuring power supply noise The N Cycles measurement interval 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 the interval of the waveform being measured T...

Page 224: ...igma 1σ from the mean is where 68 3 percent of the measurement results reside Six sigma 3σ from is where 99 7 percent of the measurement results reside The mean is calculated 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 σ the standard deviation N the number of measurements taken 2σ mean 1σ 1σ 2σ 6...

Page 225: ...lowing figure shows time measurement points The default lower middle and upper measurement thresholds are 10 50 and 90 between Top and Base values See Measurement Thresholds on page 234 for other percentage threshold and absolute value threshold settings Period on page 226 Frequency on page 226 Counter on page 227 Width on page 228 Width on page 228 Burst Width on page 228 Duty Cycle on page 228 R...

Page 226: ...eriod is defined as the 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 pulses The X cursors show what portion of the waveform is being measured The Y cursor shows the middle threshold point See Also To isolate an event for frequency measurement on page...

Page 227: ...0 ms or twice the current time window whichever is longer up to 1 second The Counter can measure frequencies up to the bandwidth of the oscilloscope The minimum frequency supported is 1 2 X gate time The hardware counter uses the trigger comparator output Therefore the counted channel s trigger level or threshold for digital channels must be set correctly The Y cursor shows the threshold level use...

Page 228: ...reshold of the falling edge to the middle threshold of the next rising edge The X cursors show the pulse being measured The Y cursor shows the middle threshold point Burst Width The Burst Width measurement is the time from the first edge to the last edge on screen Duty Cycle The duty cycle of a repetitive pulse train is the ratio of the positive pulse width to the period expressed as a percentage ...

Page 229: ... accuracy set the horizontal time div as fast as possible while leaving the complete falling edge of the waveform on the display The Y cursors show the lower and upper threshold points Delay Delay measures the time difference from the selected edge on source 1 and the selected edge on source 2 closest to the trigger reference point at the middle threshold points on the waveforms Negative delay val...

Page 230: ...asurement The example below shows a delay measurement between the rising edge of channel 1 and the rising edge of channel 2 Phase Phase is the calculated phase shift from source 1 to source 2 expressed in degrees Negative phase shift values indicate that the rising edge of source 1 occurred after the rising edge of source 2 Back Phase Delay Source 1 Period 360 Source 2 Source 1 Delay Period ...

Page 231: ... default Phase settings measure from channel 1 to 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 phase measurement between the channel 1 and the math d dt function on channel 1 X at Min Y X at Min Y is the X axis value usually time at the first displayed occurrence of the waveform Minimum sta...

Page 232: ...easured See Also To measure the peak of an FFT on page 232 To measure the peak of an FFT 1 Select FFT as the Operator in the Waveform Math Menu 2 Choose Math f t as the source in the Measurement Menu 3 Choose Maximum and X at Max Y measurements Maximum units are in dB and X at Max Y units are in Hertz for FFT Count Measurements Positive Pulse Count on page 232 Negative Pulse Count on page 233 Risi...

Page 233: ...dge Count The Rising Edge Count measurement is an edge count for the selected waveform 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 for analog channels Mixed Measurements Area on page 233 Area Area measures the area between the waveform and the ground ...

Page 234: ...he 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 Features and then selecting Measurement Thresholds 2 Press the Source softkey to select the analog channel or math waveform source for which you want to change measurement thresholds T Negative area N cycl...

Page 235: ...lly increase the middle value to be more than the lower value The default lower threshold is 10 or 800 mV If threshold Type is set to the lower threshold value can be set from 5 to 93 5 Press the Middle softkey then turn the Entry knob to set the middle measurement threshold value The middle value is bounded by the values set for lower and upper thresholds The default middle threshold is 50 or 1 2...

Page 236: ...or the Zoom window portion of the display 1 Press the Meas key 2 In the Measurement Menu press the Settings softkey 3 In the Measurement Settings Menu press the Meas Window softkey then turn the Entry knob to select from Auto Select The measurement is attempted in the lower Zoom window if it cannot be made there the upper Main window is used Main The measurement window is the upper Main window Zoo...

Page 237: ...ing the same formula used for calculating the standard deviation measurement The formula is shown in the section titled AC RMS on page 223 The source channel of the measurement is shown in parenthesis after the measurement name For example Freq 1 indicates a frequency measurement on channel 1 You can switch the statistics Display On or Display Off Statistics continue to accumulate even when the st...

Page 238: ... enabled the standard deviation shown in measurement statistics becomes a relative standard deviation that is standard deviation mean Max Count This softkey specifies the number of values used when calculating measurement statistics The Increment Statistics softkey only appears when the acquisition is stopped and the optional segmented memory feature is off Press the Single or Run Stop key to stop...

Page 239: ...ith 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 enable mask test order Option LMT at time of oscilloscope purchase or order DSOX3MASK as a stand alone item after oscilloscope purchase To create a mask from a golden waveform Automask A golden waveform ...

Page 240: ...nalog 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 Units softkey 8 Press the Create Mask softkey The mask is created and testing begins Whenever the Create Mask softkey is pressed the old mask is erased and a new mask is created ...

Page 241: ...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 you press Create Mask and the mask appears to cover the entire screen check the Y and X settings in the Automask Menu If these are set to zero the resulting mask will be extremely tight around the waveform If you press Create Mask and it appears that n...

Page 242: ...ayed 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 selected time has passed the oscilloscope will stop The specified time may be exceeded If an error occurs the action specified using the On Error softkey will occur The actual test time is displayed above the softkeys Minimum Sigma Choose this option and ...

Page 243: ... 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 time For example you can select both Stop and Measure to cause the oscilloscope to measure and stop on the first error You can also output a signal on the rear panel TRIG OUT BNC connector when there...

Page 244: ... 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 tenths of seconds And for each analog channel Number of failures acquisitions in which the signal excursion went beyond the mask Failure rate percentage of failures Sigma the ratio of process sigma to ma...

Page 245: ...rage device and connect it to a PC 9 Open the msk file your created using a text editor such as Wordpad 10 Edit save and close the file The mask file contains the following sections Mask File Identifier Mask Title Mask Violation Regions Reset Statistics Note that statistics are also reset when Mask Test is switched on after being switched off Clear Mask softkey is pressed An Automask is created Ad...

Page 246: ... Mask Violation Regions Up to 8 regions can be defined 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 regions the region glued to the top of the display and the region that is glued to the bottom The top region is indicated by y values of MAX for the first a...

Page 247: ...le The Y values normally voltage are normalized in the file using the following equation Ynorm Y Y1 ΔY where ΔY Y2 Y1 To convert the normalized Y values in the mask file to voltage Y Ynorm ΔY Y1 where ΔY Y2 Y1 The X values normally time are normalized in the file using the following equation Xnorm X X1 ΔX To convert the normalized X values to time X Xnorm ΔX X1 Oscilloscope Setup Information The k...

Page 248: ...0E 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 difficult part of creating a mask file is normalizing the X and Y values from the time and voltage values This example shows an easy way to convert voltage and time to normalized X and Y values in the mask file The following mask file produ...

Page 249: ... 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 5 10 00 1 000 12 50 0 500 15 00 0 500 15 00 1 500 12 50 1 500 Region Number 6 Number of vertices 6 05 00 1 000 02 50 0 500 02 50 0 500 05 00 1 000 02 50 1 500 02 50 1 500 Region Number 7 Number of vertices 5 10 00 1 000 12 50 0 500 15 00 0 500 15 00 1 500 12 50...

Page 250: ... 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 ENAB 1 LOCK 1 MTES AMAS SOUR CHAN1 UNIT DIV XDEL 3 00000000E 001 YDEL 2 00000000E 00 1 MTES SCAL BIND 0 X1 0 0E 00 XDEL 1 0000E 09 Y1 0 0E 00 Y2 1 00000E 0 0 MTES RMOD FOR RMOD TIME 1E 00 WAV 1000 SIGM 6 0E 00 MTES RMOD FACT ...

Page 251: ...EGEN upgrade The waveform generator gives you an easy way to provide input signals when testing circuitry with the oscilloscope Waveform generator settings can be saved and recalled with oscilloscope setups See Chapter 17 Save Recall Setups Screens Data starting on page 263 To select generated waveform types and settings 1 To access the Waveform Generator Menu and enable or disable the waveform ge...

Page 252: ...aveform s characteristics Waveform Type Characteristics Frequency Range Max Amplitude High Z 1 Offset High Z 1 Arbitrary Use the Frequency Frequency Fine Period Period Fine Amplitude High Level and Offset Low Level softkeys to set the arbitrary waveform signal parameters Use the Edit Waveform softkey to define the arbitrary waveform shape See To edit arbitrary waveforms on page 255 100 mHz to 12 M...

Page 253: ... pulse signal parameters The pulse width can be adjusted from 20 ns to the period minus 20 ns 100 mHz to 10 MHz 20 mVpp to 5 Vpp 2 50 V DC Use the Offset softkey to set the DC level n a n a 2 50 V Noise Use the Amplitude High Level and Offset Low Level to set the noise signal parameters n a 20 mVpp to 5 Vpp 2 50 V Sine Cardinal Use the Frequency Frequency Fine Period Period Fine Amplitude and Offs...

Page 254: ...ens the Waveform Generator Settings Menu which lets you make other settings related to the waveform generator See To output the waveform generator sync pulse on page 259 To specify the expected output load on page 259 To use waveform generator logic presets on page 260 To add noise to the waveform generator output on page 261 To restore waveform generator defaults on page 261 Cardiac Use the Frequ...

Page 255: ...veform Menu you see the existing arbitrary waveform definition The voltage and time period you see in the diagram are the bounding parameters they come from the frequency and amplitude settings in the main Waveform Generator Menu 2 Use the softkeys in the Edit Waveform Menu to define the shape of the arbitrary waveform Softkey Description Create New Opens the New Waveform Menu See Creating New Arb...

Page 256: ...the new arbitrary waveform press Apply Edit Interpolate Specifies how lines are drawn between arbitrary waveform points When enabled lines are drawn between points in the waveform editor Voltage levels change linearly between one point and the next When disabled all line segments in the waveform editor are horizontal The voltage level of one point remains until the next point Source Selects the an...

Page 257: ...itrary Waveforms The Edit Waveform Points Menu is opened by pressing Edit Existing in the Edit Waveform Menu or by pressing Apply Edit when creating a new arbitrary waveform To specify the voltage values of points CAUTION When you create a new arbitrary waveform the existing arbitrary waveform definition is overwritten Note that you can use the Save Recall key and menu to save arbitrary waveforms ...

Page 258: ...nt 1 Press Point then use the Entry knob to select the point you want to remove 2 Press Remove Point All points are adjusted to maintain uniform time spacing between points The Transparent softkey enables or disables transparent backgrounds When enabled you can view underlying waveforms When disabled the background is shaded Capturing Other Waveforms to the Arbitrary Waveform The Edit Waveform Men...

Page 259: ...CAUTION When you create a new arbitrary waveform the existing arbitrary waveform definition is overwritten Note that you can use the Save Recall key and menu to save arbitrary waveforms to one of four internal storage locations or to a USB storage device and you can recall them later See To save arbitrary waveforms on page 272 and To recall arbitrary waveforms on page 275 NOTE If the source wavefo...

Page 260: ...ets With logic level presets you can easily set the output voltage to TTL CMOS 5 0V CMOS 3 3V CMOS 2 5V or ECL compatible Low and High levels 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 3 In the Waveform Generator Settings Menu press the Logic Presets softkey 4 In the W...

Page 261: ...fects edge triggering on the waveform generator source see Edge Trigger on page 144 as well as the waveform generator sync pulse output signal which can be sent to TRIG OUT see Setting the Rear Panel TRIG OUT Source on page 292 This is because the trigger comparator is located after the noise source To restore waveform generator defaults 1 If the Waveform Generator Menu is not currently displayed ...

Page 262: ...262 Agilent InfiniiVision 3000 X Series Oscilloscopes User s Guide 16 Waveform Generator ...

Page 263: ...so recall default or factory default setups Oscilloscope screen images can be saved to a USB storage device in BMP or PNG formats Acquired waveform data can be saved to a USB storage device in comma separated value CSV ASCII XY binary BIN and Agilent logic analyzer binary ALB formats There is also a command to securely erase all the oscilloscope s non volatile internal memory Saving Setups Screen ...

Page 264: ...is suitable for spreadsheet analysis See To save CSV ASCII XY or BIN data files on page 266 ASCII XY data csv This creates separate files of comma separated values for each displayed channel This format is also suitable for spreadsheets See To save CSV ASCII XY or BIN data files on page 266 Reference Waveform data h5 Saves waveform data in a format that can be recalled to one of the oscilloscope s...

Page 265: ... Application User s Guide for more information You can also configure the Quick Action key to save setups screen images or data See Configuring the Quick Action Key on page 298 To save setup files Setup files can be saved to one of 10 internal Agilent Flash locations or to an external USB storage device 1 Press Save Recall Save Format then turn the Entry knob to select Setup scp 2 Press the softke...

Page 266: ...the black backgound that appears on screen Palette lets you choose between Color or Grayscale images 4 Finally press the Press to Save softkey A message indicating whether the save was successful is displayed To save CSV ASCII XY or BIN data files Data files can be saved to an external USB storage device Graticule Not Inverted Graticule Inverted NOTE When saving screen images the oscilloscope uses...

Page 267: ...ecify whether the currently displayed segment is saved or all acquired segments are saved See also Saving Data from Segmented Memory on page 200 4 Finally press the Press to Save softkey A message indicating whether the save was successful is displayed See Also Binary Data bin Format on page 325 CSV and ASCII XY files on page 332 Minimum and Maximum Values in CSV Files on page 333 To save ALB data...

Page 268: ...ontrol on page 269 Alb Format Available ALB serial formats include Default CAN I2C LIN UART RS232 SPI 2 Wire Serial SPI 3 Wire Serial SPI 4 Wire Serial When you choose any ALB format other than Default waveforms from the analog channels if displayed are also digitized and displayed as digital waveforms The analog channel s trigger level determines the point at which the voltage is considered a log...

Page 269: ...It sets the number of data points that will be output to the file Only displayed data points are saved The maximum number of data points depends on these things Table 5 Recommended Signal Mapping Label Signal Oscilloscope Channel Maps to Logic Analyzer Channel TxRS232 Tx Ch1 D0 RxRS232 Rx Ch2 D1 I2C Data Ch1 D0 Clk Ch2 D1 SPI2 2 wire Clk Ch1 D0 Data Ch2 D1 SPI3 3 wire Chip Select Ch1 D0 Clk Ch2 D1...

Page 270: ...tal channels are on Displayed digital channels consume acquisition memory Whether segmented memory is on Acquisition memory is divided by the number of segments The horizontal time div sweep speed setting At faster settings fewer data points appear on the display When saving to a CSV format file the maximum number of data points is 64K When necessary the Length control performs a 1 of n decimation...

Page 271: ... Finally press the Press to Save softkey A message indicating whether the save was successful is displayed To save reference waveform files to a USB storage device 1 Press the Save Recall key 2 In the Save Recall Menu press the Save softkey 3 In the Save Menu press the Format softkey and turn the Entry knob to select Reference Waveform data h5 4 Press the Source softkey and turn the Entry knob to ...

Page 272: ...to select Arbitrary Waveform data csv 2 Press the softkey in the second position and use the Entry knob to navigate to the save location See To navigate storage locations on page 272 3 Finally press the Press to Save softkey A message indicating whether the save was successful is displayed See Also To edit arbitrary waveforms on page 255 To navigate storage locations When saving or recalling files...

Page 273: ... the File Name softkey You must have a USB storage device connected to the oscilloscope for this softkey to be active 2 In the File Name Menu use the Spell Enter and Delete Character softkeys to enter the file name Spell press this softkey and turn the Entry knob to select the character at the current position Enter press this softkey to enter characters and move the cursor to the next character p...

Page 274: ...File Explorer See File Explorer on page 287 You can also configure the Quick Action key to recall setups masks or reference waveforms See Configuring the Quick Action Key on page 298 To recall setup files Setup files can be recalled from one of 10 internal Agilent Flash locations or from an external USB storage device 1 Press Save Recall Recall Recall then turn the Entry knob to select Setup scp 2...

Page 275: ...s the Recall softkey and turn the Entry knob to select Reference Waveform data h5 4 Press the To Ref softkey and turn the Entry knob to select the desired reference waveform location 5 Press the softkey in the second position and use the Entry knob to navigate to the file to recall See To navigate storage locations on page 272 6 Press the Press to Recall softkey A message indicating whether the re...

Page 276: ...o navigate to the file to recall See To navigate storage locations on page 272 3 Press the Press to Recall softkey A message indicating whether the recall was successful is displayed 4 If you would like to clear the display press Clear Display See Also To edit arbitrary waveforms on page 255 Recalling Default Setups 1 Press the Save Recall key 2 In the Save Recall Menu press Default Erase 3 In the...

Page 277: ...Save Recall key 2 In the Save Recall Menu press Default Erase 3 In the Default menu press Secure Erase This performs a secure erase of all non volatile memory in compliance with National Industrial Security Program Operation Manual NISPOM Chapter 8 requirements You must confirm the secure erase and the oscilloscope will reboot when finished ...

Page 278: ...278 Agilent InfiniiVision 3000 X Series Oscilloscopes User s Guide 17 Save Recall Setups Screens Data ...

Page 279: ...n softkeys and the Press to Print softkey 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 either the USB port on the front panel or the rectangular USB host port on the rear panel For the most up to date listing of printers that are compatible with the InfiniiVision oscilloscopes please visit www agilen...

Page 280: ...n the DSOXLAN LAN VGA module is installed you can set up network printer connections A network printer is a printer attached to a computer or print server on the network 1 Press the Print key on the front panel 2 In the Print Configuration Menu press the Print to softkey then turn the Entry knob to select the network printer you want to configure either 0 or 1 NOTE The oscilloscope will print the ...

Page 281: ...and Password settings are common for all network printers 5 Use the Spell Enter and Delete Character softkeys to enter the network printer settings Spell press this softkey and turn the entry knob to select the character at the current position Enter press this softkey to enter characters and move the cursor to the next character position Delete Character press the Enter softkey until the desired ...

Page 282: ...n effect when the Setup Information option is selected Also if the amount of setup information will not fit on the same page with the waveform it will be printed on a new page regardless of the Form Feed setting Landscape Select this to print horizontally on the page instead of vertically portrait mode To specify the palette option In the Print Configuration Menu press the Palette softkey to chang...

Page 283: ...he Quick Action Key 298 This chapter explains oscilloscope utility functions I O Interface Settings The oscilloscope can be accessed and or controlled remotely via these I O interfaces USB device port on the rear panel square shaped USB port LAN interface when a LAN VGA module is installed in the rear panel module slot GPIB interface when a GPIB module is installed in the rear panel module slot To...

Page 284: ...ies on page 307 Setting up the Oscilloscope s LAN Connection When the DSOXLAN LAN VGA module is installed you can place the oscilloscope on the network and set up its LAN connection Once that is done you can use the oscilloscope s web interface or remotely control the oscilloscope via the LAN interface The oscilloscope supports methods for automated LAN configuration or manual LAN configuration se...

Page 285: ...tworks 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 oscilloscope will connect to the network automatically If the oscilloscope does not automatically connect to the network press Utility I O LAN Reset In a few moments the oscilloscope will connect to...

Page 286: ...d alone Point to Point Connection to a PC The following procedure describes 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 Utility I O 2 Press the LAN Settings softkey 3 Press the Config softkey then turn the Entry knob to select Automatic and press the sof...

Page 287: ...USB storage device The oscilloscope s internal file system under Agilent Flash consists of 10 locations for oscilloscope setup files and four locations for mask files To use the File Explorer 1 Press Utility File Explorer 2 In the File Explorer Menu press the softkey in the first position and use the Entry knob to navigate NOTE The USB port on the front panel and the USB port on the rear panel lab...

Page 288: ...or Delete File softkeys to take the action Pushing the Entry knob is the same as pressing the Load File softkey A file that has been deleted from a USB storage device cannot be recovered by the oscilloscope Use your PC to create directories on a USB storage device USB Storage Devices Most USB mass storage devices are compatible with the oscilloscope However certain devices may be incompatible and ...

Page 289: ...tions Preferences lets you specify oscilloscope preferences To choose expand about center or ground on page 289 To disable enable transparent backgrounds on page 290 To load the default label library on page 290 To set up the screen saver on page 290 To set AutoScale preferences on page 291 To choose expand about center or ground When you change a channel s volts division setting the waveform disp...

Page 290: ...ounds To load the default label library See To reset the label library to the factory default on page 139 To set up the screen saver The oscilloscope can be configured to turn on a display screen saver when the oscilloscope has been idle for a specified length of time 1 Press Utility Options Preferences Screen Saver to display the Screen Saver Menu 2 Press the Saver softkey to select the screen sa...

Page 291: ...n fast debug is enabled autoscale lets you make quick visual comparisons to determine whether the signal being probed is a DC voltage ground or an active AC signal Channel coupling is maintained to allow easy viewing of oscillating signals Press the Channels softkey and turn the Entry knob to specify the channels to be autoscaled All Channels The next time you press AutoScale all channels that mee...

Page 292: ... Entry knob to set to the desired number The hours are shown in the 24 hour format So 1 00 PM is hour 13 The real time clock only allows selection of valid dates If a day is selected and the month or year is changed so the day is invalid the day is automatically adjusted Setting the Rear Panel TRIG OUT Source You can choose the source of the TRIG OUT connector on the rear panel of the oscilloscope...

Page 293: ...ro volts or the DC offset value See Chapter 16 Waveform Generator starting on page 251 The TRIG OUT connector also provides the User Cal signal See To perform user calibration on page 294 Performing Service Tasks The Service Menu under Utility Service lets you perform service related tasks To perform user calibration on page 294 To perform hardware self test on page 296 To perform front panel self...

Page 294: ...al Institute of Standards and Technology traceability is required perform the Performance Verification procedure in the Agilent InfiniiVision 2000 3000 X Series Oscilloscopes Service Guide using traceable sources To perform user calibration 1 Disconnect all inputs from the front and rear panels including the digital channels cable on an MSO and allow the oscilloscope to warm up before performing t...

Page 295: ...length cables as shown below Then connect a BNC f to BNC f barrel connector to the tee as shown below Figure 48 User Calibration cable for 2 channel oscilloscope Figure 49 User Calibration cable for 4 channel oscilloscope To Channel 1 To Channel 2 Long cable to TRIG OUT To Channel 4 To Channel 1 To Channel 3 Longer cable to TRIG OUT To Channel 2 ...

Page 296: ...ion to better describe an oscilloscope failure To verify proper operation after the oscilloscope has been repaired Successfully passing Hardware Self Test does not guarantee 100 of the oscilloscope s functionality Hardware Self Test is designed to provide an 80 confidence level that the oscilloscope is operating properly To perform front panel self test Pressing Utility Service Front Panel Self Te...

Page 297: ...e 1 Remove power from the instrument 2 Clean the external surfaces of the oscilloscope with a soft cloth dampened with a mixture of mild detergent and water 3 Make sure that the instrument is completely dry before reconnecting it to a power source To check warranty and extended services status To learn the warranty status of your oscilloscope 1 Point your web browser to www agilent com find warran...

Page 298: ... Technologies if they are associated with the failure symptoms 3 Package the oscilloscope You can use the original shipping container or provide your own materials sufficient to protect the instrument during shipping 4 Seal the shipping container securely and mark it FRAGILE Configuring the Quick Action Key The Quick Action key lets you perform common repetitive actions by pressing a single key To...

Page 299: ...etup mask or reference waveform Press Settings to set up the recall options See Chapter 17 Save Recall Setups Screens Data starting on page 263 Quick Freeze Display freezes the display without stopping running acquisitions or un freezes the display if currently frozen For more information see To freeze the display on page 133 Quick Trigger Mode toggles the trigger mode between Auto and Normal see ...

Page 300: ...300 Agilent InfiniiVision 3000 X Series Oscilloscopes User s Guide 19 Utility Settings ...

Page 301: ...mber host name 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 Commands applet window Save setups screen images waveform data and mask files Recall setup files reference waveform data files or mask files Get screen images and save or print them from...

Page 302: ...ystems 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 interface 1 Connect the oscilloscope to your LAN see To establish a LAN connection on page 285 or establish a point to point connection see Stand alone Point to Point Connection to a PC on page 286 It is p...

Page 303: ...nel on page 304 The Simple Remote Front Panel see Simple Remote Front Panel on page 305 The SCPI Command window applet for Remote Programming see Remote Programming via the Web Interface on page 306 NOTE If Java is not installed on your PC you will be prompted to install the Sun Microsystems Java Plug in This plug in must be installed on the controlling PC for the web interface s Remote Front Pane...

Page 304: ...dio see Remote Programming with Agilent IO Libraries on page 307 Real Scope Remote Front Panel To operate the oscilloscope using the web interface s Real Scope Remote Front Panel 1 Access the oscilloscope s web interface see Accessing the Web Interface on page 302 2 When the oscilloscope s web interface is displayed select Browser Web Control then select Real Scope Remote Front Panel After a few s...

Page 305: ...Panel After a few seconds the Remote Front Panel appears 3 Use the Main Menu and the Function Keys to control the oscilloscope To view Quick Help right click on a softkey Scrolling and Monitor Resolution When using a monitor resolution of 800 x 600 or less on the remote computer you need to scroll to access the full remote front panel To display the remote front panel without scroll bars use a mon...

Page 306: ...ote 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 302 2 When the oscilloscope s web interface is displayed select Browser Web Control then select Remote Programming The SCPI Commands applet appears within the browser web page ...

Page 307: ...lling the oscilloscope through remote commands is contained in the Programmer s Guide which is included on the documentation CD supplied with this oscilloscope You can also access this document on the Agilent web site For more information about connecting to the oscilloscope refer to the Agilent Technologies USB LAN GPIB Interfaces Connectivity Guide For a printable electronic copy of the Connecti...

Page 308: ...page a Enter the name of the file you are saving to b Select the format You can click Preview to view the oscilloscope s current screen image When previewing you can use the New Acquisition check box to force a new acquisition before the preview With some formats you can click Save Setup Info to save setup information to an ASCII txt format file c Click Save The current acquisition is saved d In t...

Page 309: ...2 When the oscilloscope s web interface is displayed select the Save Recall tab from the left side of the Welcome screen 3 Click the Recall link 4 On the Recall page a Click Browse b In the Choose file dialog select the file you want to recall then click Open c When recalling reference waveform data files select the To Reference Waveform location d Click Recall Get Image To save or print the oscil...

Page 310: ...cture 4 Select a storage location for the image file and click Save Identification Function The Identification web interface feature is useful when trying to locate a specific instrument in a rack of equipment 1 Access the oscilloscope s web interface see Accessing the Web Interface on page 302 2 When the oscilloscope s web interface Welcome Page is displayed select the Identification on radio but...

Page 311: ...r s Guide 311 Instrument Utilities The Instrument Utilities page of the web interface lets you View installed options View firmware versions Install firmware upgrade files View calibration status You can select these cababilities via a drop down menu Identification option ...

Page 312: ...sing the oscilloscope 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 a password 1 Access the oscilloscope s web interface see Accessing the Web Interface on page 302 2 When the oscilloscope s web interface is displayed select the Configure Network ...

Page 313: ...face 20 Agilent InfiniiVision 3000 X Series Oscilloscopes User s Guide 313 3 Click the Modify Configuration button 4 Enter your desired password and click Apply Changes Configure Network tab Modify Configuration ...

Page 314: ... 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 Using the web browser select the Configure Network tab select Modify Configuration erase the Password and select Apply Changes Enter password ...

Page 315: ...InfiniiVision oscilloscope data sheets for complete up to date specifications and characteristics To download a data sheet please visit www agilent com find 3000X Series Then select the Library tab followed by Specifications Or go to the Agilent home page at www agilent com and search for 3000 X Series oscilloscopes data sheet To order a data sheet by phone please contact your local Agilent office...

Page 316: ...rformed 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 measurements performed in the building installation Examples are measurements on distribution boards circuit breakers wiring including cables bus bars junction boxes switches socket outlets in the fixed install...

Page 317: ... I 500 Vpk CAT II 400 Vpk With N2862A or N2863A 10 1 probe 300 Vrms CAUTION Maximum input voltage at digital channels 40 V peak CAT I transient overvoltage 800 Vpk Environment Indoor use only Ambient temperature Operating 0 C to 55 C non operating 40 C to 71 C Humidity Operating Up to 80 RH at or below 40 C Up to 45 RH up to 50 C Non operating Up to 95 RH up to 40 C Up to 45 RH up to 50 C Altitude...

Page 318: ...nt 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 supported quantity of active probes See Also For more information on probes and accessories see www agilent com for Probes and Accessories Selection Guide 5989 6162EN 5000 6000 and 7000 Series InfiniiVision Osc...

Page 319: ...e attenuation factor manually See To specify the probe attenuation on page 67 The following passive probes can be used with the InfiniiVision 3000 X Series oscilloscopes Any combination of passive probes can be used Single Ended Active Probes The following single ended active probes can be used with the InfiniiVision 3000 X Series oscilloscopes Table 6 Passive Probes Model Description 1165A Passiv...

Page 320: ...InfiniiMax 7 GHz probe 2 1156A Active probe 1 5 GHz 4 1157A Active probe 2 5 GHz 4 1158A Active probe 4 GHz 4 N2744A T2A probe interface adapter Unknown depends on probes connected N2795A Active probe 1 GHz with AutoProbe interface 4 1 See AutoProbe Interface on page 318 Table 8 Differential Probes Model Description Quantity Supported1 1141A Active differential probe 200 MHz 200 VDC peak AC max re...

Page 321: ...differential probe 1See AutoProbe Interface on page 318 Table 8 Differential Probes continued Model Description Quantity Supported1 Table 9 Current Probes Model Description Quantity Supported1 1146A Current probe 100 kHz 100 A AC DC 1147A Current probe 50 MHz 15 A AC DC with AutoProbe interface 2 N2774A Obsolete replaced by N2782A with N2775A power supply N2780A Current probe 2 MHz 500 A AC DC use...

Page 322: ... for Probes and Accessories Selection Guide 5989 6162EN 5000 6000 and 7000 Series InfiniiVision Oscilloscope Probes and Accessories Data Sheet 5968 8153EN Table 10 Accessories Available for InfiniiVision 3000 X Series Oscilloscopes Model Part Description DSOXLAN LAN VGA connection module DSOXGPIB GPIB connection module N6456A Rack mount kit N6457A Soft carrying case and front panel cover N2786A 2 ...

Page 323: ...lloscope to a Service Center See data sheets for details Table 11 Licensed Options Available License Description After purchase model number notes ADVMATH Advanced Math Measurements Order DSOX3ADVMATH AERO MIL STD 1553 and ARINC 429 Serial Triggering and Analysis Order DSOX3AERO AUDIO Audio Serial Triggering and Analysis I2S Order DSOX3AUDIO AUTO Automotive Serial Triggering and Analysis CAN LIN O...

Page 324: ... DSOX3MSO The digital probe cable kit is supplied with the MSO license PWR Power Measurement and Analysis Order DSOX3PWR You can find the DSOX3PWR Power Measurement Application User s Guide at www agilent com find 3000X Series man ual or on the Documentation CD SGM Segmented Memory Lets you capture infrequent or burst signals with great resolution by eliminating the capture of your signal s inacti...

Page 325: ... products To search for firmware updates for your oscilloscope direct your web browser to www agilent com find 3000X Series sw To view the currently installed software and firmware press Help About Oscilloscope Once you have downloaded a firmware update file you can place it on a USB storage device and load the file using File Explorer see File Explorer on page 287 or you can use the Instrument Ut...

Page 326: ... Channel 2 data all segments Channel 3 data all segments Channel 4 data all segments Digital channel data all segments Math waveform data all segments When not saving all segments the number of waveforms is equivalent to the number of active channels including math and digital channels with up to seven waveforms for each digital pod When saving all segments the number of waveforms is equal to the ...

Page 327: ...mber of bytes in the header Waveform Type A 32 bit integer that is the type of waveform stored in the file 0 Unknown 1 Normal 2 Peak Detect 3 Average 4 Not used in InfiniiVision oscilloscopes 5 Not used in InfiniiVision oscilloscopes 6 Logic Number of Waveform Buffers A 32 bit integer that is the number of waveform buffers required to read the data Points A 32 bit integer that is the number of wav...

Page 328: ...or time domain waveforms it is the time of the first point This value is treated as a double precision 64 bit floating point number If the value is zero then no data has been acquired X Units A 32 bit integer that identifies the unit of measure for X values in the acquired data 0 Unknown 1 Volts 2 Seconds 3 Constant 4 Amps 5 dB 6 Hz Y Units A 32 bit integer that identifies the unit of measure for ...

Page 329: ...ngle acquisition with multiple analog channels Waveform Data Header Size A 32 bit integer that is the size of the waveform data header Buffer Type A 16 bit short that is the type of waveform data stored in the file 0 Unknown data 1 Normal 32 bit float data 2 Maximum float data 3 Minimum float data 4 Not used in InfiniiVision oscilloscopes 5 Not used in InfiniiVision oscilloscopes 6 Digital unsigne...

Page 330: ... 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 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 Waveform Buffers 1 Buffer Type 1 floating point Bytes per P...

Page 331: ...sition 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 Number of Waveforms 2 Number of Waveform Buffers 1 Buffer Type 6 unsigned char Bytes per Point 1 Buffer Type 6 unsigned char Bytes per Point 1 Waveform Header 1 140 bytes Number of Waveform Buffers ...

Page 332: ...ytes 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 Waveform Buffers 1 Index 1 Time Tag 0 0 Buffer Type 1 floating point Bytes per Point 4 Number of Waveform Buffers 1 Index 2 Time Tag time between segment 1 and 2 Buffer Type 1 floating point Bytes p...

Page 333: ...tion 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 divisions across the screen To find the total number of samples the oscilloscope will take 100 us x 4 GSa s 400K samples The oscilloscope is required to display those 400K samples using 640 pixel columns The...

Page 334: ...oftware is distributed in the hope that it will be useful but WITHOUT ANY WARRANTY without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE See the GNU General Public License for more details The license is located on the Agilent InfiniiVision Oscilloscopes Documentation CD ROM RealVNC source code can be obtained from RealVNC or by contacting Agilent Agilent will ch...

Page 335: ...s 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 use the Signals softkey which appears in the Serial Decode Menu 1 Press Label to turn on labels 2 Press Serial 3 Press the Serial softkey turn the Entry knob to select the desired slot Serial 1 or S...

Page 336: ...baud 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 default baud rate is 125 kb s If none of the pre defined selections match your CAN bus signal select User Defined then press the User Baud softkey and turn the Entry knob to enter the baud rate 9 Press th...

Page 337: ...ected 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 CAN Triggering To set up the oscilloscope to capture a CAN signal see Setup for CAN Signals on page 335 The Controller Area Network CAN trigger allows triggering on CAN version 2 0A and 2 0B signals A...

Page 338: ...ata 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 when any form error or active error is encountered Acknowledge Error The oscilloscope will trigger when the acknowledge bit is recessive high Overload Frame The oscilloscope will trigger on CAN overl...

Page 339: ... 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 340 CAN Totalizer on page 341 Interpreting CAN Lister Data on page 342 Searching for CAN Data in the Lister on page 343 NOTE To display CAN serial decode see CAN Serial Decode on page 339 NOTE For CAN triggering set up see CAN Triggering on page ...

Page 340: ...indicate that the oscilloscope s hardware decode calculated a CRC that is different from the incoming CRC data stream Angled waveforms show an active bus inside a packet frame Mid level blue lines show an idle bus 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 the horizontal scale ...

Page 341: ...n an overflow condition occurs the counter displays OVERFLOW The counters can be reset to zero by pressing the Reset CAN Counters softkey Types of Frames Active error frames are CAN frames in which a CAN node recognizes an error condition during a data or remote frame and issues an active error flag A partial frame occurs when the oscilloscope detects any error condition during a frame that is not...

Page 342: ...e and no counters are incremented Interpreting CAN Lister Data In addition to the standard Time column the CAN Lister contains these columns ID frame ID Type frame type RMT remote frame or Data DLC data length code Data data bytes CRC cyclic redundancy check Errors highlighted in red Errors can be Acknowledge Ack A Form Fo or Frame Fr Different kinds of errors can be combined like Fo Fr in the abo...

Page 343: ... ID Press the Bits softkey to enter the ID Remote or Data Frame ID Finds remote or data frames matching the specified ID Press the Bits softkey to select the ID Data Frame ID and Data Finds data frames matching the specified ID and data Press the Bits softkey to set the ID length ID value number of data bytes and data value Error Frame Finds CAN active error frames All Errors Finds any form error ...

Page 344: ...dle of the LIN signal 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 8 Press the Baud Rate softkey to open the LIN Baud Rate Menu 9 Press the Baud softkey then turn the Entry knob to select the baud rate that matches match your LIN bus signal The default baud rate is 19 2 kb s If none of the pre d...

Page 345: ...softkey and select the minimum number of clocks that define a sync break in your LIN signal LIN Triggering To set up the oscilloscope to capture a LIN signal see Setup for LIN Signals on page 343 LIN triggering can trigger on the rising edge at the Sync Break exit of the LIN single wire bus signal that marks the beginning of the message frame the Frame ID or the Frame ID and Data A LIN signal mess...

Page 346: ... the value for the Frame ID ID Data Frame ID and Data The oscilloscope triggers when a frame with an ID and data equal to the selected values is detected When triggering on a frame ID and data To select the frame ID value press the Frame ID softkey and use the Entry knob Note that you can enter a don t care value for the frame ID and trigger on data values only To set up the number of data bytes a...

Page 347: ...d ensure that the box under the Show Parity softkey is 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 horizontal Zoom window for easier navigation of the decoded data See Also Interpreting LIN Decode on page 348 Interpreting LIN Lister Data on page 349...

Page 348: ...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 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 the horizontal scale and run again to see decode Red dots in the decode line indicate that there i...

Page 349: ... a wakeup signal is indicated by WAKE in blue If the wakeup signal is not followed by a valid wakeup delimiter a wakeup error is detected and displayed as WUP in red Interpreting LIN Lister Data In addition to the standard Time column the LIN Lister contains these columns ID frame ID Data LIN 1 3 only data bytes Checksum LIN 1 3 only Data and Checksum LIN 2 0 only Errors highlighted in red Aliased...

Page 350: ...press the Search softkey then turn the Entry knob to select the serial slot Serial 1 or Serial 2 on which the LIN signal is being decoded 3 Press Search then select from these options ID Finds frames with the specified ID Press the Frame ID softkey to select the ID ID Data Finds frames with the specified ID and data Press the Frame ID softkey to select the ID Press the Bits softkey to enter the da...

Page 351: ...scilloscope 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 set up the oscilloscope to capture FlexRay signals 1 Press Label to turn on labels 2 Press Serial 3 Press the Serial softkey turn the Entry knob to select the desired serial bus Serial 1 or Serial 2 a...

Page 352: ...pecify 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 differential active probe that requires a 50 ohm termination is being used Sets the selected source channel s probe attenuation to 10 1 Sets the trigger level on the selected source channel to 300 mV Turns on...

Page 353: ... 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 Sync Frames Normal Frames NOT Startup Frames NOT NULL Frames NOT Sync Frames 7 Press the Cyc Ct Rep softkey and use the Entry knob to select the cycle count repetition factor 2 4 8 16 32 or 64 or All 8 ...

Page 354: ... 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 Because specific FlexRay frames may occur infrequently it may be helpful to press the Mode Coupling key then press the Mode softkey to set the trigger mode from Auto to Normal This prevents the oscillosc...

Page 355: ...ke 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 the display for the selected event trigger FlexRay Serial Decode To set up the oscilloscope to capture FlexRay signals see Setup for FlexRay Signals on page 351 To set up FlexRay serial decode 1 Pres...

Page 356: ... data See Also Interpreting FlexRay Decode on page 356 FlexRay Totalizer on page 357 Interpreting FlexRay Lister Data on page 358 Searching for FlexRay Data in the Lister on page 358 Interpreting FlexRay Decode Frame type NORM SYNC SUP NULL in blue Frame ID decimal digits in yellow Payload length decimal number of words in green Header CRC hex digits in blue plus red HCRC error message if invalid ...

Page 357: ...The totalizer appears on screen whenever FlexRay Decode is ON in the Serial Decode Menu The FRAMES counter gives a real time count of all captured frames The NULL counter gives the number and percentage of null frames The SYNC counter gives the number and percentage of sync frames The totalizer runs counting frames and calculating percentages even when the oscilloscope is stopped not acquiring dat...

Page 358: ...ns FID frame ID Len payload length HCRC header CRC CYC cycle number Data FCRC frame CRC Frames with errors are highlighted in red Searching for FlexRay Data in the Lister The oscilloscope s search capability lets you search for and mark certain types of FlexRay data in the Lister You can use the Navigate key and controls to navigate through the marked rows 1 With FlexRay selected as the serial dec...

Page 359: ...cle number and ID Press the Frame ID softkey to select the ID Press the Cycle softkey to select the number Data Frame ID Cycle number Finds frames with the specified data cycle number and frame ID Press the Frame ID softkey to select the ID Press the Cycle softkey to select the number Press the Data sofkey to open a menu where you can enter the data value Header CRC Error Finds cyclic redundancy c...

Page 360: ...360 Agilent InfiniiVision 3000 X Series Oscilloscopes User s Guide 23 FlexRay Triggering and Serial Decode ...

Page 361: ...s 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 up the oscilloscope to capture I2 C signals use the Signals softkey which appears in the Serial Decode Menu 1 Press Label to turn on labels 2 Press Serial 3 Press the Serial softkey turn the Entry kn...

Page 362: ...e 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 or it will be interpreted as a start or stop condition data transitioning while the clock is high The SCL and SDA labels for the source channels are automatically set I2C Triggering To set up the osc...

Page 363: ... 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 acknowledge of the selected address field is false The R W bit is ignored Restart The oscilloscope triggers when another start condition occurs before a stop condition EEPROM Data Read The trigger looks...

Page 364: ...7 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 frame on the 26th clock edge if all bits in the pattern match The frame is in the format Frame Start Address byte 1 Write Address byte 2 Ack Data For triggering purposes a restart is treated as a sta...

Page 365: ...e 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 7 bit or 0x3FF 10 bit hexadecimal When triggering on a read write frame the oscilloscope will trigger after the start address read write acknowledge and data events occur If don t care is selected 0...

Page 366: ...o set up the oscilloscope to capture I2C signals see Setup for I2C Signals on page 361 To set up I2C serial decode 1 Press Serial to display the Serial Decode Menu 2 Choose 7 bit or 8 bit address size Use 8 bit address size to include the R W bit as part of the address value or choose 7 bit address size to exclude the R W bit from the address value 3 If the decode line does not appear on the displ...

Page 367: ...g I2C Decode Angled waveforms show an active bus inside a packet frame Mid level blue lines show an idle bus In the decoded hexadecimal data Address values appear at the start of a frame Write addresses appear in light blue along with the W character Read addresses appear in yellow along with the R character NOTE If the setup does not produce a stable trigger the I2C signals may be slow enough tha...

Page 368: ...ies Pink vertical bars indicate you need to expand the horizontal scale and 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 drawn in pink Unknown bus values undefined or error conditions are drawn in red Interpreting I2C Lister Data In addition to...

Page 369: ...it Address with no Ack finds when the acknowledge of the selected address field is false The R W bit is ignored Restart finds when another start condition occurs before a stop condition EEPROM Data Read finds EEPROM control byte value 1010xxx on the SDA line followed by a Read bit and an Ack bit It then looks for the data value and qualifier set by the Data is softkey and the Data softkeys Frame S...

Page 370: ...elect the desired slot Serial 1 or Serial 2 and press the softkey again to enable decode 4 Press the Mode softkey then select SPI trigger type 5 Press the Signals softkey to open the SPI Signals Menu 6 Press the Clock softkey to open the SPI Clock Menu In the 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...

Page 371: ...old softkey then turn the Entry knob to select the MOSI signal threshold voltage 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 8 Optional Press the MISO softkey to open the SPI Master In Slave Out Menu In the SPI Master In Slave Out Menu a Press the MISO Data softkey then turn the Entry kno...

Page 372: ...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 high or high to low is the first clock in the serial stream Chip Select Press the CS or CS softkey then turn the Entry knob to select the channel that is connected to the SPI frame line The label CS or CS for the source channel is automatically set ...

Page 373: ... and it will become the trigger level when the trigger type is set to the selected serial decode slot When Display Info is enabled information about the selected signal sources and their threshold voltage levels as well as a waveform diagram appears on the screen SPI Triggering To set up the oscilloscope to capture SPI signals see Setup for SPI Signals on page 370 After the oscilloscope has been s...

Page 374: ... Press the Bits softkey and turn the Entry knob to set the number of bits Bits in the serial data string The number of bits in the string can be set anywhere from 4 bits to 64 bits The data values for the serial string are displayed in the MOSI MISO Data string in the waveform area 6 For each bit in the MOSI MISO Data string a Press the Bit softkey then turn the Entry knob to select the bit locati...

Page 375: ...e 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 370 To set up SPI serial decode 1 Press Serial to display the Serial Decode Menu NOTE For SPI decode information see SPI Serial Decode on page 375 NOTE For SPI triggering setup see SPI Triggering on page 373 ...

Page 376: ...ster 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 decode data You can use the horizontal Zoom window for easier navigation of the acquired data See Also Interpreting SPI Decode on page 377 Interpreting SPI Lister Data on page 378 Searching for SPI Data in the Lister on page 378 NOTE If ...

Page 377: ...cimal 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 the horizontal scale and run again to see decode Red dots in the decode line indicate that there is data that is not being displayed Scroll or expand the horizontal scale to view the information Aliase...

Page 378: ...ta in the Lister The oscilloscope s search capability lets you search for and mark certain types of SPI data in the Lister You can use the Navigate key and controls to navigate through the marked rows 1 With SPI 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 the SPI signa...

Page 379: ...s 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 the remaining softkeys to enter the hex digit values For more information on searching data see Searching Lister Data on page 126 For more information on using the Navigate key and controls see Navigating the Time Base on page 58 ...

Page 380: ...380 Agilent InfiniiVision 3000 X Series Oscilloscopes User s Guide 24 I2C SPI Triggering and Serial Decode ...

Page 381: ... 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 Press Label to turn on labels 2 Press Serial 3 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 4 Press the Mod...

Page 382: ...ome 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 Serial Decode Menu 8 Press the Bus Config softkey to open the I2 S Bus Configuration Menu and display a diagram showing WS SCLK and SDATA signals for the currently specified bus configuration 9 Pres...

Page 383: ...B first is right justified to the transition of WS 12 Press the WS Low softkey then turn the Entry knob to select whether WS Low indicates Left or Right channel data The on screen diagram changes with your selection WS Low Left Channel Left channel data corresponds to WS low right channel data corresponds to WS high WS Low Left is the oscilloscope s default WS setting WS SCLK SDATA LEFT CHANNEL RI...

Page 384: ...h your selection I2S Triggering To set up the oscilloscope to capture I2S signals see Setup for I2S Signals on page 381 After you have set up the oscilloscope to capture I2S signals you can then trigger on a data value 1 Press Trigger 2 In the Trigger Menu press the Trigger softkey then turn the Entry knob to select the serial slot Serial 1 or Serial 2 on which the I2S signals are being decoded WS...

Page 385: ...nge 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 Trigger to the data value that must be reached Set Armed to the value to which the data must fall before the trigger circuit is re armed ready to trigger again These settings are made in the current me...

Page 386: ...requires a pair of values as with In Range Out of Range Increasing value or Decreasing value the first softkey in the I2S Bits Menu lets you select which value of the pair In the I2S Bits Menu press the Bit softkey and rotate the Entry knob to select each bit then use the 0 1 X softkey to set each bit value to zero one or don t care You can use the Set all Bits softkey to set all bits to the value...

Page 387: ...e 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 data See Also Interpreting I2S Decode on page 388 Interpreting I2S Lister Data on page 389 NOTE To display I2S serial decode see I2S Serial Decode on page 387 NOTE For I2S triggering setup see I2S Triggering on pa...

Page 388: ... characters Left channel data values appear in white along with the L characters 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 the horizontal scale and run again to see decode Red dots in the decode line indicate that more data can be displayed Scroll or expand the horizontal scal...

Page 389: ...a is highlighted in pink When this happens decrease the horizontal time div setting and run again Searching for I2S Data in the Lister The oscilloscope s search capability lets you search for and mark certain types of I2S data in the Lister You can use the Navigate key and controls to navigate through the marked rows 1 With I2S selected as the serial decode mode press Search NOTE When the receiver...

Page 390: ...n it equals the specified word Not Equal finds any word other than the specified word Less than finds when the channel s data word is less than the specified value Greater than finds when the channel s data word is greater than the specified value In Range enter upper and lower values to specify the range to find Out of Range enter upper and lower values to specify range not to find Errors finds a...

Page 391: ... 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 length of 20 bits Setup for MIL STD 1553 Signals MIL STD 1553 signal setup consists of first connecting the oscilloscope to a serial MIL STD 1553 signal using a differential active probe the Agilent N...

Page 392: ...uto 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 the current V div setting Turns off trigger noise reject Turns on Serial Decode Sets the trigger type to MIL 1553 9 If the upper and lower thresholds are not set correctly by Auto Setup press the Signa...

Page 393: ...ync 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 on the end of a Command Status word Remote Terminal Address triggers if the RTA of the Command Status word matches the specified value When this option is selected the RTA softkey becomes available ...

Page 394: ...ignals see Setup for MIL STD 1553 Signals on page 391 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 binary display of the decoded data The base setting is used for the display of the remote terminal address and the data in both the decode line and in the Lister 3 If the decode line does not appear on t...

Page 395: ...rpreting MIL STD 1553 Decode To display serial decode information you must press Run or Single after switching on serial decode The MIL STD 1553 decode display is color coded as follows Command and Status decoded data is colored green with the Remote Terminal Address 5 bits of data being displayed first then the text C S followed by the value of the remaining 11 bits of a Command Status word Data ...

Page 396: ...rpreting MIL STD 1553 Lister Data In addition to the standard Time column the MIL STD 1553 Lister contains these columns RTA displays the Remote Terminal Address for Command Status words nothing for Data words Word Type Cmd Status for Command Status words Data for Data words For Command Status words the background color is green to match the decode text color Data the 11 bits after the RTA for Com...

Page 397: ... end of a valid Data Sync pulse Command Status Word Start finds the start of Command Status word at the end of a valid C S Sync pulse Remote Terminal Address finds the Command Status word whose RTA matches the specified value The value is specified in hex When this option is selected the RTA softkey becomes available and lets you select the hex Remote Terminal Address value to find Remote Terminal...

Page 398: ...l to turn on labels 2 Press Serial 3 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 4 Press the Mode softkey then select ARINC 429 decode mode 5 Press the Signals softkey to open the ARINC 429 Signals Menu 6 Press Source then select the channel for the ARINC 429 signal The label for the ARINC 429 source chan...

Page 399: ... Press the Low Threshold softkey then turn the Entry knob to set the low trigger threshold voltage level The threshold voltage levels are used in decoding and will become the trigger levels when the trigger type is set to the selected serial decode slot ARINC 429 Triggering To set up the oscilloscope to capture a ARINC 429 signal see Setup for ARINC 429 Signals on page 398 After setting up the osc...

Page 400: ...its Eye triggers on any bit which will therefore form an eye diagram All 0 Bits triggers on any bit with a value of zero All 1 Bits triggers on any bit with a value of one 4 If you select the Label or Label Bits condition use the Label softkey to specify the label value Label values are always displayed in octal 5 If you select the Label Bits condition use the Bits softkey and submenu to specify t...

Page 401: ...e Serial Decode Menu 2 In the submenu accessed by the Settings softkey you can use the Base softkey to select between hexadecimal and binary display of the decoded data The base setting is used for data display in both the decode line and in the Lister Label values are always displayed in octal and SSM and SDI values are always displayed in binary 3 Press the Word Format softkey and specify the wo...

Page 402: ...ess 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 page 403 ARINC 429 Totalizer on page 404 Interpreting ARINC 429 Lister Data on page 405 Searching for ARINC 429 Data in the Lister on page 405 NOTE If the setup does not produce a stable trigger the ARINC 429 signal may be slow e...

Page 403: ...rmat 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 selected Base SSM green 2 bits displayed in binary When the decode format is Label Data SSM Label yellow 8 bits displayed in octal Data white red if parity error 21 bits displayed in the selected Base SSM green 2 bits displayed in binary When...

Page 404: ...bel 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 429 totalizer measures the total ARINC 429 words and errors The totalizer is always running counting words and errors and is displayed whenever ARINC 429 decode is displayed The totalizer counts even when the oscilloscope is stopped not ac...

Page 405: ...binary or hex depending on the base setting SSM the bit values if included in the word decode format Errors highlighted in red Errors can be Parity Word or Gap Aliased data is highlighted in pink When this happens decrease the horizontal time div setting and run again Searching for ARINC 429 Data in the Lister The oscilloscope s search capability lets you search for and mark certain types of ARINC...

Page 406: ... finds the specified label value Label values are always displayed in octal Label Bits finds the label and the other word fields as specified Parity Error finds words with a parity error Word Error finds an intra word coding error Gap Error finds an inter word gap error Word or Gap Error finds either a Word or Gap Error All Errors finds any of the above errors For more information on searching dat...

Page 407: ...requires Option COMP or the DSOX3COMP 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 softkey turn the Entry knob to select the desired slot Serial 1 or Serial 2 and press the softkey again to enable decode 4 Press the Mode softkey then select UART RS232 trigger type 5 Press the Signals ...

Page 408: ...ftkey 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 Choose odd even or none based on your device under test c Baud Press the Baud Rate softkey then press the Baud softkey and select a baud rate to match the signal in your device under test If the desi...

Page 409: ... 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 Trigger Setup Menu 4 Press the Base softkey to select Hex or ASCII as the base displayed on the Data softkey in the UART RS232 Trigger Setup Menu Note that the setting of this softkey does not affect the ...

Page 410: ... 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 bit The specified data byte applies to the least significant 8 bits excludes the 9th alert bit Similar choices are available for Tx Rx or Tx Parity Error Triggers on a parity error based on the parity...

Page 411: ...isplayed 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 ASCII is selected and the data exceeds 0x7F the data is displayed in hex NOTE If the setup does not produce a stable trigger the UART RS232 signals may be slow enough that the oscilloscope is AutoTrig...

Page 412: ...d 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 Zoom window for easier navigation of the acquired data See Also Interpreting UART RS232 Decode on page 413 UART RS232 Totalizer on page 414 Interpreting UART RS232 Lister Data on page 415 Searching for...

Page 413: ... the left When a data word value is selected for framing it is displayed in light blue When using 9 bit data words the 9th bit will also be displayed in light blue 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 the horizontal scale and run again to see decode When the horizontal sc...

Page 414: ... totalizer appears on screen whenever UART RS232 Decode is ON in the Serial Decode Menu The totalizer is running counting frames and calculating the percentage of error frames even when the oscilloscope is stopped not acquiring data The ERR error counter is a count of Rx and Tx frames with parity errors The TX FRAMES and RX FRAMES counts include both normal frames and frames with parity errors Whe...

Page 415: ...se the horizontal time div setting and run again Searching for UART RS232 Data in the Lister The oscilloscope s search capability lets you search for and mark certain types of UART RS232 data in the Lister You can use the Navigate key and controls to navigate through the marked rows 1 With UART RS232 selected as the serial decode mode press Search 2 In the Search Menu press the Search softkey then...

Page 416: ...bit Finds only when the 9th alert bit is 0 The specified data byte applies to the least significant 8 bits excludes the 9th alert bit Rx X Data For use when the DUT data words are 9 bits in length including the alert bit the 9th bit Finds a data byte that you specify regardless of the value of the 9th alert bit The specified data byte applies to the least significant 8 bits excludes the 9th alert ...

Page 417: ...waveforms editing existing 257 Area Full Screen measurement 234 Area N Cycles measurement 234 ARINC 429 serial decode 401 ARINC 429 totalizer 404 ARINC 429 trigger 399 ARINC 429 words errors counter 404 ARINC 429 decode signal speed 398 ARINC 429 decode signal type 398 ARINC 429 decode word format 401 ASCII file format 264 attenuation probe 67 attenuation probe external trigger 183 attenuators 69 ...

Page 418: ...urement 223 DC RMS N Cycles measurement 223 DC signals checking 179 DC waveform generator output 253 dead time re arm 200 decibels FFT vertical units 82 decimating samples 191 decimation for measurement record 333 decimation for screen 333 default configuration 29 default label library 139 default setup 29 276 Default Setup key 36 defaults waveform generator 261 delay knob 49 Delay measurement 216...

Page 419: ...rols and connectors 33 front panel self test 296 front panel language overlay 40 front panel real scope remote 304 front panel simple remote 305 G g t 73 gateway IP 285 Gaussian frequency response 188 gaussian pulse waveform generator output 254 Generic video trigger 166 German front panel overlays 41 German user interface and Quick Help 46 glitch capture 193 glitch trigger 147 golden waveform tes...

Page 420: ...math 1 2 75 math 1 2 75 math addition 75 math differentiate 77 math divide 75 math FFT 81 math functions 71 math integrate 78 math multiply 75 math offset 73 math scale 73 math subtract 75 math transforms or filters on arithmetic operations 73 math units 73 74 math using waveform math 71 MATLAB binary data 326 Maximum measurement 219 maximum sample rate 191 Meas key 38 213 Measure controls 38 meas...

Page 421: ...igital channels 111 position knob 111 position analog 63 positive pulse width measurement trend 95 post processing 213 post trigger information 49 Power App measurements 217 power consumption 27 power cord connector 42 power requirements 27 power supply 42 power switch 28 34 power on 27 predefined labels 136 Preshoot measurement 217 222 Press to go 273 288 pre trigger information 49 print 299 Prin...

Page 422: ...I2S trigger 382 serial data 361 serial data I2C trigger 362 serial decode controls 37 Serial key 37 serial number 296 301 service functions 293 Set all Digits softkey 153 setup and hold triggering 160 setup files saving 265 setup automatic 107 setup default 29 setups recall 274 SGM 197 SGM license 324 shipping damage 23 shipping precautions 298 Sigma minimum 242 Simple Remote Front Panel 305 Simpl...

Page 423: ...44 triggers TRIG OUT signal 292 TTL threshold 111 turn channel on 39 U UART totalizer 414 UART trigger 409 UART RS232 frame counter 414 UART RS232 license 323 UART RS232 serial decode 411 under sampled signals 187 units cursor 206 units external trigger probe 183 units math 73 74 units probe 67 updating software and firmware 325 upgrade files 311 upgrade options 323 upgrading the oscilloscope 325 ...

Page 424: ... interface 301 web interface accessing 302 white noise adding to waveform generator output 261 Width measurement 228 Width measurement 228 Window FFT 82 X X at Max Y measurement 232 X at Max Y on FFT 217 X at Min Y measurement 231 X at Min Y on FFT 217 XY mode 51 52 Z Z axis blanking 54 zoom and pan 48 zoom display measurement window with 236 Zoom key 36 ...

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