Keysight InfiniiVision HD3 Series

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74 Keysight InfiniiVision HD3-Series Oscilloscopes User's Guide

4 FFT Spectral Analysis

Main Page

Print History2
Warranty2
Safety Notices2
Infiniivision HD3-Series Oscilloscopes-At a Glance3
In this Guide5
Table of Contents7
Getting Started19
Inspect the Package Contents19
Learn the Front Panel Inputs and Outputs21
Learn the Back Panel Inputs and Outputs22
Tilt the Oscilloscope for Easy Viewing24
Power-On the Oscilloscope25
Select the User Interface Language26
Connect Probes to the Oscilloscope26
Maximum Input Voltage at Analog Inputs26
Do Not Float the Oscilloscope Chassis26
Input a Waveform27
Recall the Default Oscilloscope Setup27
Use Autoscale28
How Autoscale Works28
Compensate Passive Probes29
Learn the Front Panel Keys and Knobs30
Front Panel Overlays for Different Languages34
Using the Touchscreen User Interface35
Access Features from the Menu36
View and Change Settings with Badges36
Quick-Select Waveforms to Display37
Lay out Waveform Grids37
View Waveforms in a Grid39
Drag Markers40
Customize the Favorites Menu40
View Logged Messages40
Select Draw Box or Drag Waveforms Mode40
View Results42
Enter Names Using Alpha-Numeric Keypad Dialogs42
Use a USB Mouse And/Or Keyboard for Touchscreen Controls42
Access the Built-In Online Help43
Horizontal Controls45
To Adjust the Horizontal Scale (Time/DIV)46
To Adjust the Horizontal Delay (Position)47
Panning and Zooming Single or Stopped Acquisitions48
To Display the Zoomed Time Base48
To Change the Horizontal Scale Coarse/Fine Adjustment Setting50
To Position the Time Reference (Left, Center, Right, Custom)50
Searching for Events51
To Set up Searches51
To Copy Search Setups52
Navigating the Time Base52
To Navigate Time52
To Navigate Search Events53
To Navigate Segments53
Vertical Controls55
To Turn Waveforms on or off56
To Adjust the Vertical Scale57
To Adjust the Vertical Position57
To Specify Channel Coupling57
To Specify Channel Input Impedance58
To Specify Bandwidth Limiting59
To Change the Vertical Scale Knob's Coarse/Fine Adjustment Setting59
To Invert a Channel Waveform60
Setting Analog Channel Probe Options60
To Specify the Channel Units61
To Specify the Probe Attenuation61
To Specify the Probe Skew62
To Calibrate a Probe62
To Specify the Channel External Scaling63
FFT Spectral Analysis65
Searching for FFT Peaks70
FFT Spectral Analysis70
FFT Measurement Hints71
FFT Units72
FFT DC Value72
FFT Aliasing72
FFT Spectral Leakage73
Math Waveforms75
To Display Math Waveforms75
Units for Math Waveforms78
Arithmetic Math Functions78
Add or Subtract79
Multiply or Divide79
Transforms Math Functions80
Absolute Value81
Ax + B81
Base 10 Exponential82
Common Logarithm83
Differentiate83
Exponential84
Integrate84
Natural Logarithm86
Square Root87
Square88
FFT Math Functions88
FFT Magnitude, FFT Phase88
Filters Math Functions90
Averaged Value90
Band Pass Filter91
Envelope91
High Pass and Low Pass Filter92
Smoothing92
Visualizations Math Functions93
Magnify93
Max/Min Hold94
Maximum/Minimum94
Measurement Trend94
The Analysis Record and Waveform Math95
Reference Waveforms99
To Save a Waveform to a Reference Waveform Location99
To Display a Reference Waveform100
To Scale and Position Reference Waveforms100
To Adjust Reference Waveform Skew101
To Display Reference Waveform Summary Information101
To Save/Recall Reference Waveform Files To/From a USB Storage Device101
To Connect the Digital Probes to the Device under Test103
Digital Channels104
Probe Cable for Digital Channels104
Digital Channels105
Acquiring Waveforms Using the Digital Channels106
To Display Digital Channels Using Autoscale106
Interpreting the Digital Waveform Display107
To Change the Displayed Size of the Digital Channels108
To Switch a Single Channel on or off109
To Switch Multiple Digital Channels on or off109
To Reposition a Digital Channel109
To Change the Logic Threshold for Digital Channels110
To Display Digital Channels as a Bus110
Digital Channel Signal Fidelity: Probe Impedance and Grounding113
Input Impedance113
Probe Grounding115
Best Probing Practices116
Protocol Decode119
Protocol Decode Options119
Protocol Listing120
Searching Lister Data121
Display Settings123
To Change the Waveform Layout123
To Set or Clear Persistence124
To Clear the Display126
To Select the Grid Options126
To Adjust the Grid Intensity127
To Display and Edit Waveform Labels127
To Turn the Label Display on or off128
To Assign a Predefined Label to a Waveform128
To Define a New Label128
To Load a List of Labels from a Text File You Create129
To Reset the Label Library to the Factory Default130
To Add an Annotation130
To Adjust Waveform Intensity132
Triggers136
Adjusting the Trigger Level136
Forcing a Trigger137
Edge Trigger137
Pulse Width Trigger139
Pattern Trigger141
Hex Bus Pattern Trigger143
OR Trigger144
Rise/Fall Time Trigger144
Runt Trigger146
Setup and Hold Trigger147
Protocol Trigger149
Zone Qualified Trigger149
To Select the Auto or Trig'D Trigger Mode154
To Select the Trigger Coupling155
To Enable or Disable Trigger Noise Rejection157
To Enable or Disable Trigger HF Reject157
To Disable or Reenable Trigger Hysteresis158
To Set the Trigger Holdoff158
External Trigger Input159
Maximum Voltage at Oscilloscope External Trigger Input160
12 Acquisition Control161
Running, Stopping, and Making Single Acquisitions (Run Control)161
Overview of Sampling162
Sampling Theory162
Aliasing162
Oscilloscope Bandwidth and Sample Rate163
Oscilloscope Rise Time164
Oscilloscope Bandwidth Required165
Memory Depth and Sample Rate165
Selecting the Acquisition Mode166
Normal Acquisition Mode167
Peak Detect Acquisition Mode167
Averaging Acquisition Mode169
Selecting a Global Bandwidth Limit and Vertical Resolution171
Acquiring to Segmented Memory171
Navigating Segments173
Measurements, Statistics, and Infinite Persistence with Segmented Memory173
Segmented Memory Re-Arm Time173
Saving Data from Segmented Memory174
Digitizer Mode174
13 Markers177
To Make Marker Measurements178
Marker Examples181
14 Measurements185
To Quickly Add 10 Common Measurements186
To Make Automatic Measurements187
To Edit Measurements188
Measurements Summary188
Voltage Measurements190
Peak-Peak191
Maximum191
Minimum191
Y at X191
Amplitude191
Top191
Base192
Overshoot192
Preshoot193
Average194
DC Rms194
Ac Rms195
Ratio196
Time Measurements196
Period197
Frequency197
Counter198
Width198
Width199
Burst Width199
Duty Cycle199
Bit Rate199
Rise Time199
Fall Time200
Time at Edge200
Delay200
Phase201
At Max y202
At Min y203
Count Measurements203
Positive Pulse Count203
Negative Pulse Count203
Rising Edge Count204
Falling Edges Count204
Mixed Measurements204
Area204
Slew Rate205
FFT Analysis Measurements205
Channel Power205
Occupied Bandwidth205
Adjacent Channel Power Ratio (ACPR)206
Total Harmonic Distortion (THD)206
Measurement Thresholds207
Measurement Window209
Measurement Statistics209
Measurement Limit Testing211
15 Histogram213
Waveform Histogram Set up214
Defining the Histogram Limits Window216
Measurement Histogram Set up217
Histogram Data Graph218
Histogram Data Statistics219
16 Mask Testing221
To Create a Mask from a "Golden" Waveform (Automask)221
Mask Test Setup Options223
Mask Statistics225
To Manually Modify a Mask File226
Building a Mask File229
Mask Region Limit Per Pixel Column232
How Is Mask Testing Done232
Digital Voltmeter and Counters235
Digital Voltmeter235
Counters237
18 Fault Hunter239
More about Fault Hunter Auto Setup242
19 Frequency Response Analysis245
To Make Connections245
To Set up and Run the Analysis246
To View and Save the Analysis Results247
20 Waveform Generator249
To Select Generated Waveform Types and Settings249
To Specify the Output Settings253
To Edit Arbitrary Waveforms254
To Add Modulation to the Waveform Generator Output257
To Set up Amplitude Modulation (AM)258
To Set up Frequency Modulation (FM)259
Save/Email/Recall (Setups, Screens, Data)261
Saving Setups, Screen Images, or Data261
To Save Setup Files263
To Save BMP or PNG Image Files263
To Save CSV, ASCII XY, or bin Data Files264
To Save Reference Waveform Files to a USB Storage Device266
To Save Masks266
To Save Arbitrary Waveforms267
Emailing Setups, Screen Images, or Data267
Recalling Setups, Masks, or Data269
To Recall Setup Files270
To Recall Mask Files270
To Recall Reference Waveform Files from a USB Storage Device270
To Recall Arbitrary Waveforms271
Recalling Default Setups271
Performing a Secure Erase272
Utility Settings273
I/O Interface Settings273
Setting up the Oscilloscope's LAN Connection274
To Establish a LAN Connection275
Stand-Alone (Point-To-Point) Connection to a PC276
File Explorer277
USB Storage Devices278
Setting Oscilloscope Preferences278
To Choose "Expand About" Center or Ground279
To Disable/Enable Transparent Backgrounds279
To Set up the Screen Saver279
To Set Autoscale Preferences280
To Scale the GUI Larger or Smaller281
Setting the Oscilloscope's Clock281
See also • "Setting the Oscilloscope's Clock281
Setting the Rear Panel aux out Source282
Enabling Remote Command Logging282
Setting Enhanced Security Options283
Performing Service Tasks287
To Display the User Calibration Status287
To Perform User Calibration288
To Perform Hardware Self Test288
To Perform Front Panel Self Test289
To Display Oscilloscope Information290
To Clean the Oscilloscope290
To Check Warranty and Extended Services Status290
To Contact Keysight290
To Return the Instrument291
Configuring the (Quick Action) Menu Item291
23 Web Interface293
Accessing the Web Interface294
Control Instrument295
Remote Programming Via the Web Interface295
Remote Programming with Keysight IO Libraries296
Remote GUI Access Using VNC297
Get Image297
Save/Recall298
Saving Files Via the Web Interface298
Recalling Files Via the Web Interface299
Identification Function300
Instrument Utilities301
Setting a Password302
Specifications and Characteristics305
Measurement Category / 305305
Oscilloscope Measurement Category305
Reference306
Measurement Category Definitions306
Maximum Input Voltages306
Maximum Input Voltage at Analog Inputs306
Maximum Input Voltage at Digital Channels306
Environmental Conditions307
Probes and Accessories307
Reference307
Loading Licenses and Displaying License Information308
Licensed Options Available308
Other Options Available308
Software and Firmware Updates308
Binary Data (.Bin) Format309
Binary Data in MATLAB310
Binary Header Format310
Example Program for Reading Binary Data312
Examples of Binary Files312
CSV and ASCII XY Files315
CSV and ASCII XY File Structure315
Minimum and Maximum Values in CSV Files316
Frequency Data in CSV Files316
Acknowledgements316
Product Markings and Regulatory Information317
CAN Triggering and Protocol Decode319
CAN/CAN FD Protocol Decode Setup319
Loading and Displaying CAN Symbolic Data323
CAN/CAN FD Triggering324
Interpreting CAN/CAN FD Decode326
Interpreting CAN Lister Data328
Searching for CAN Data in the Lister328
I2C Triggering and Protocol Decode331
I2C Protocol Decode Setup331
I2C Triggering333
Interpreting I2C Decode336
Interpreting I2C Lister Data337
Searching for I2C Data in the Lister337
LIN Triggering and Protocol Decode339
LIN Protocol Decode Setup339
Loading and Displaying LIN Symbolic Data342
LIN Triggering342
Interpreting LIN Decode344
Interpreting LIN Lister Data345
Searching for LIN Data in the Lister345
SPI Triggering and Protocol Decode347
SPI Protocol Setup347
SPI Triggering350
Interpreting SPI Decode351
Interpreting SPI Lister Data352
Searching for SPI Data in the Lister352
UART/RS232/422/485 Protocol Decode Setup / 355355
UART/RS232/422/485 Triggering and Protocol Decode357
UART/RS232/422/485 Triggering358
Interpreting UART/RS232/422/485 Decode360
Interpreting UART/RS232/422/485 Lister Data361
Searching for UART/RS232/422/485 Data in the Lister361
Index363

Keysight InfiniiVision HD3 Series - Page 74

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