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Keysight Infiniium 9000 Series Oscilloscopes

A Using Trigger Holdoff to Synchronize

Acquisition/Display on Complex Signals

Triggering on simple repetitive signals is easy using standard edge triggering.

But if you need to synchronize your oscilloscope’s acquisitions/display on more

complex signals, such as an amplitude-modulated signal, you will need to use

your oscilloscope’s trigger hold-off capability unless there is an external

synchronization signal available. This lab shows you how to use trigger holdoff

to achieve a stable trigger in the absence of a synchronization signal.

Make connections and perform initial setup:

To power the demo board, connect a USB cable between it and the

Keysight Infiniium 9000 Series oscilloscope.
You can also apply power by connecting the oscilloscope’s MSO cable to

the demo board’s 40-pin connector.

Connect the scope channel 1 probe to demo board CH1 and GND.

3 Make sure all other probes are disconnected from the oscilloscope

Turn the SELECT switch to position 1 (AM).

Press

[Default Setup]

Содержание Infiniium 9000 Series

Страница 1: ...sight Infiniium 9000 Series Oscilloscopes Evaluation Guide The most recent PDF version of this guide will be placed on the Keysight web site at http literature cdn keysight com litweb pdf N2918 97003...

Страница 2: ...ment are fur nished under a license and may be used or copied only in accordance with the terms of such license Restricted Rights Legend If software is for use in the perfor mance of a U S Government...

Страница 3: ...illoscope that extends up to 4 GHz bandwidth A precision engineered dense 20 layer printed circuit board 27 custom ASICs and multiple FPGAs enables the instrument s innovative form factor 2 Three Inst...

Страница 4: ...ht Infiniium 9000 Series oscilloscope Two passive probes Demo kit with demo board and USB cable Demo board connections Power is provided via USB or MSO cable Oscilloscope Probe Connections MODE Action...

Страница 5: ...Topic Page Time Allowance Lab 1 Getting Started 7 10 min Lab 2 Viewing Complex Signals 22 10 min Lab 3 Uncovering Signal Anomalies with Responsive Deep Memory 26 10 min Lab 4 InfiniiScan Triggering 29...

Страница 6: ...6 Keysight Infiniium 9000 Series Oscilloscope Evaluation Guide...

Страница 7: ...0 Series Oscilloscopes 1 Getting Started If you are not familiar with the Keysight Infiniium 9000 Series oscilloscopes please first look over the main sections of the front panel as illustrated and th...

Страница 8: ...8 Keysight Infiniium 9000 Series Oscilloscope Evaluation Guide Drag and drop measurements Status tab shows current settings Mixed signal oscilloscope MSO cable connection 15 XGA touch screen display A...

Страница 9: ...iate action keys and special menus Push the knob to toggle selection Trigger level knob and controls Time div and position horizontal controls Color coded controls for each oscilloscope channel Digita...

Страница 10: ...40 pin connector 2 Connect the scope channel 1 probe to demo board CH1 and GND 3 Turn the SELECT switch to position 3 Burst 4 Press the Default Setup key on the front panel The oscilloscope is now se...

Страница 11: ...ight Infiniium 9000 Series Oscilloscope Evaluation Guide 11 5 Press AutoScale The oscilloscope will analyze all active channels turning them on and setting the time base V div and trigger conditions f...

Страница 12: ...d in the lower middle of the screen 2 Turn the small Horizontal position knob to move the waveform horizontally from the trigger point Push this knob to center zero the trigger point 3 Set the time ba...

Страница 13: ...sition will be set to Run At any time you may Stop the acquisition process to examine a signal in detail or to save it 1 Press AutoScale to return to simple setup 2 Set the time base to 2 ms div 3 Pre...

Страница 14: ...Infiniium 9000 Series Oscilloscope Evaluation Guide Acquisition Controls 1 From the on screen main menu choose Setup Acquisition Note the sampling mode manual memory depth averaging and manual sampli...

Страница 15: ...the V div setting The V div setting is displayed at the top of the screen for each channel Knobs are color coded to match the waveform color Push the vertical scale knob for vernier fine adjustment 3...

Страница 16: ...to better configure the oscilloscope s settings and trigger level When triggers are forced the white Auto LED in the Run Control section is lit When the oscilloscope finds the trigger event the white...

Страница 17: ...asurements The easiest way to make measurements is to drag and drop measurement icons 1 Press AutoScale to return to a simple setup 2 Drag a measurement icon from the left hand side of the screen to a...

Страница 18: ...measurement icon on a waveform markers for the measurement appear on screen and the measurement data appears in the bottom portion of the screen You can also set up the Multi Purpose key to display q...

Страница 19: ...iniium 9000 Series Oscilloscope Evaluation Guide 19 2 In the Customize Multipurpose dialog select QuickMeas from the top drop down then select the quick measurements you want and click Close 3 Now pre...

Страница 20: ...to load a setup file QuickWaveform to save waveform data QuickExecute to run a program Using Markers 1 Press the Markers key on front panel Horizontal Ax and Bx and Vertical Ay and By markers can be p...

Страница 21: ...r deltas Saving Data Setups or Images You can save images waveform data or setups to a variety of media including the local hard drive or USB host ports From the on screen main menu choose File Save a...

Страница 22: ...high sample rate to avoid aliasing Make connections and perform initial setup 1 To power the demo board connect a USB cable between it and the Keysight Infiniium 9000 Series oscilloscope You can also...

Страница 23: ...tion Guide 23 Then click Close 10 Adjust the volts div setting to 500 mV div 11 Wave your hand over the demo board s video camera lens to observe the good display update rate of the oscilloscope Set a...

Страница 24: ...nals 24 Keysight Infiniium 9000 Series Oscilloscope Evaluation Guide 13 In the Acquisition Setup dialog select Then click Close 14 Press Single to obtain one acquisition using the maximum memory depth...

Страница 25: ...wing Complex Signals 2 Keysight Infiniium 9000 Series Oscilloscope Evaluation Guide 25 15 Using the large Horizontal scale knob adjust the time base setting down to 2 s div to zoom in on the color bur...

Страница 26: ...technology the display system will clearly show this glitch while the deep memory will allow us to zoom in for detailed analysis of the glitch after capture Make connections and perform initial setup...

Страница 27: ...ger holdoff can be used to achieve a stable trigger see Appendix A 7 Turn off the channel 2 display still the trigger source by pressing the 2 key 8 Re adjust channel 1 s vertical scale to 500 mV div...

Страница 28: ...small Horizontal position knob move one of the glitches to the center of the display Step 2 Using the large Horizontal time div knob set the time base to 500 ns div turn clockwise to see characterist...

Страница 29: ...o board connect a USB cable between it and the Keysight Infiniium 9000 Series oscilloscope You can also apply power by connecting the oscilloscope s MSO cable to the demo board s 40 pin connector 2 Co...

Страница 30: ...4 InfiniiScan Triggering 30 Keysight Infiniium 9000 Series Oscilloscope Evaluation Guide Then click Close 10 In the waveform area draw a box around the area where an occasional glitch occurs...

Страница 31: ...button and select Zone 1 AND Must Intersect The oscilloscope now triggers and captures only waveforms where the glitch occurs InfiniiScan can be extremely effective in isolating cycles such as DDR rea...

Страница 32: ...w more signals and to make time correlated measurements across all channels Make connections and perform initial setup 1 Connect the MSO cable between the oscilloscope and the demo board s 40 pin conn...

Страница 33: ...Digital to Analog Converter DAC Channels D0 D7 blue are the input control lines to the DAC We were able to easily trigger on channel 2 However what if we wanted to trigger on a specific voltage instr...

Страница 34: ...Infiniium 9000 Series Oscilloscope Evaluation Guide 9 In the Digital Setup dialog s Bus 1 tab select Then click Close Set up the trigger To trigger on a bus value 10 Choose Trigger Setup Trigger or pr...

Страница 35: ...Oscilloscope MSO 5 Keysight Infiniium 9000 Series Oscilloscope Evaluation Guide 35 11 In the Trigger Setup dialog select Then click Close 12 Set the time base to 20 s div At center screen notice the...

Страница 36: ...gory USB Low Speed Capture Make connections and perform initial setup 1 Connect the demo board USB B port to your 9000 Series oscilloscope using a USB A to B cable 2 Plug mouse into USB A port on the...

Страница 37: ...ital channels aren t captured 7 Press Default Setup 8 Press AutoScale You are now viewing low speed serial traffic between a mouse and the PC in the oscilloscope 9 Set the time base to 20 s div to see...

Страница 38: ...oordinate information change in the Payload tab USB Full Speed Capture Make connections and perform initial setup 12 Disconnect the mouse from the demo board USB A port 13 Connect a full speed device...

Страница 39: ...ecode the specified protocol You are now viewing USB full speed traffic To make the protocol decode more interesting let s watch traffic that is more varied 18 Copy any large file a 100M file generate...

Страница 40: ...6 USB 40 Keysight Infiniium 9000 Series Oscilloscope Evaluation Guide 20 Click on either a Data 1 or a Data 0 packet row then select the Payload tab to see the packet contents...

Страница 41: ...n Guide 41 Set up the trigger 21 Choose Trigger Setup Trigger or press Menu in the front panel Trigger controls 22 In the Trigger Setup dialog select Then click Close 23 Press Single and note that the...

Страница 42: ...drives make excellent devices for this 25 Connect an InfiniiMax differential probe with socketed probe head adapter to the demo board s USB high speed connector Use oscilloscope channel 3 This connec...

Страница 43: ...otocol decode more interesting let s watch traffic that is more varied 30 Copy any large file a 100M file generates just a few seconds of traffic and works well from a thumb drive plugged into the dem...

Страница 44: ...Evaluation Guide Set up the trigger 33 Choose Trigger Setup Trigger or press Menu in the front panel Trigger controls 34 In the Trigger Setup dialog select Then click Close 35 Press Single The oscill...

Страница 45: ...oscope You can also apply power by connecting the oscilloscope s MSO cable to the demo board s 40 pin connector 2 Connect the scope channel 1 probe to demo board CH3 SCL and GND 3 Connect the scope ch...

Страница 46: ...elect Then click Auto Setup and Close 10 Press Single 11 Set the time base to 1 ms div As you move the blue vertical marker in the waveform display it tracks in the protocol viewer window As you click...

Страница 47: ...9000 Series Oscilloscope Evaluation Guide 47 Set up the trigger 12 Choose Trigger Setup Trigger or press Menu in the front panel Trigger controls 13 In the Trigger Setup dialog select Then click Clos...

Страница 48: ...7 I2C 48 Keysight Infiniium 9000 Series Oscilloscope Evaluation Guide 15 In the protocol decode viewer select the Payload tab 16 Select the Header tab to see a data sheet view of the acquired protocol...

Страница 49: ...lloscope and the demo board s 40 pin connector This powers the demo board and probes its digital signals Normally you would use flying leads to probe digital signals in your device under test DUT The...

Страница 50: ...nfiniium 9000 Series Oscilloscope Evaluation Guide 7 In the Serial Decode dialog select Then click Auto Setup and Close Set up the trigger 8 Choose Trigger Setup Trigger or press Menu in the front pan...

Страница 51: ...valuation Guide 51 9 In the Trigger Setup dialog select Then click Close 10 Change the time base setting to 500 s div to easily see the serial decode As you move the blue vertical marker in the wavefo...

Страница 52: ...gnals by connecting the oscilloscope s analog channels to the proper signals on the demo board s 40 pin connector Make connections and perform initial setup 1 To power the demo board connect a USB cab...

Страница 53: ...ries Oscilloscope Evaluation Guide 53 Set up serial decode 6 Choose Setup Serial Decode 7 In the Serial Decode dialog select Then click Auto Setup and Close Set up the trigger 8 Set up the trigger the...

Страница 54: ...8 SPI 54 Keysight Infiniium 9000 Series Oscilloscope Evaluation Guide 9 Change the time base setting to 500 s div to easily see the serial decode...

Страница 55: ...To power the demo board connect a USB cable between it and the Keysight Infiniium 9000 Series oscilloscope You can also apply power by connecting the oscilloscope s MSO cable to the demo board s 40 p...

Страница 56: ...Press Single 9 Move the mouse pointer over the serial decode symbols then click and drag the decode symbols below the waveform 10 In the Decode window click Search 11 In the Serial Search dialog enabl...

Страница 57: ...e the RS 232 option installed The installed options are listed in the Help About Infiniium dialog Make connections and perform initial setup 1 To power the demo board connect a USB cable between it an...

Страница 58: ...10 RS 232 58 Keysight Infiniium 9000 Series Oscilloscope Evaluation Guide Set up serial decode 7 Choose Setup Serial Decode 8 In the Serial Decode dialog select...

Страница 59: ...00 Series Oscilloscope Evaluation Guide 59 Then click Auto Setup and Close 9 In the Decode window select the ASCII display format Set up the trigger 10 Choose Trigger Setup Trigger or press Menu in th...

Страница 60: ...10 RS 232 60 Keysight Infiniium 9000 Series Oscilloscope Evaluation Guide 11 In the Trigger Setup dialog select Then click Close 12 Press Run...

Страница 61: ...USB cable between it and the Keysight Infiniium 9000 Series oscilloscope You can also apply power by connecting the oscilloscope s MSO cable to the demo board s 40 pin connector 2 Connect the scope c...

Страница 62: ...valuation Guide 11 In the Acquisition Setup dialog select Then click Close 12 Press Single to capture the desired number of segments After the acquisition completes notice the bottom portion of the sc...

Страница 63: ...lloscope Evaluation Guide 63 13 Use the forward back start and end buttons to play through the acquired segments one by one 14 Enter a play rate of 100 ms and click Play to play back all the captured...

Страница 64: ...rm initial setup set up serial decode and set up the trigger as shown in I2C on page 45 2 Set up the segmented memory acquisition as shown in Set acquisition options on page 61 3 Press Single You can...

Страница 65: ...able between it and the Keysight Infiniium 9000 Series oscilloscope You can also apply power by connecting the oscilloscope s MSO cable to the demo board s 40 pin connector 2 Connect the scope channel...

Страница 66: ...12 Histograms 66 Keysight Infiniium 9000 Series Oscilloscope Evaluation Guide 11 In the Histogram dialog select Then click Close Note the standard deviation and the number of total hits analyzed...

Страница 67: ...re is an external synchronization signal available This lab shows you how to use trigger holdoff to achieve a stable trigger in the absence of a synchronization signal Make connections and perform ini...

Страница 68: ...l However our desire is to set up the oscilloscope s triggering based on the envelope of this complex AM signal 7 Change time base setting to 100 s div Note that the oscilloscope will appear to be unt...

Страница 69: ...ime use markers if you wish Note that the cycle time is approximately 450 s On the front panel press Markers Manual Placement and set Ax to top of peak of small envelope and Bx to top of the peak of t...

Страница 70: ...ff mode and enter a holdoff time of 400 s 15 Click Close to close the open dialogs Holdoff is an under utilized tool that can achieve stable trigger conditions on complex signals The idea is that the...

Страница 71: ......

Страница 72: ...Keysight Technologies Inc 2009 Printed in U S A Third edition August 2009 N2918 97003 N2918 97003 www keysight com...

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