Page 1
R&S®MXO 4 Series
Oscilloscope
User Manual
(=SÃU2)
1335533702
Version 03
Page 2
This manual describes the following R&S®MXO 4 series models with firmware version 1.2.x.x:
●
R&S®MXO 4 (1335.5050K04)
© 2022 Rohde & Schwarz GmbH & Co. KG
Muehldorfstr. 15, 81671 Muenchen, Germany
Phone: +49 89 41 29 - 0
Email: info@rohde-schwarz.com
Internet: www.rohde-schwarz.com
Subject to change – data without tolerance limits is not binding.
R&S® is a registered trademark of Rohde & Schwarz GmbH & Co. KG.
The terms HDMI and HDMI High-Definition Multimedia Interface, and the HDMI Logo are trademarks or registered trademarks of
HDMI Licensing Administrator, Inc. in the United States and other countries.
All other trademarks are the properties of their respective owners.
1335.5337.02 | Version 03 | R&S®MXO 4 Series
Throughout this manual, products from Rohde & Schwarz are indicated without the ® symbol, e.g. R&S®MXO 4 series oscilloscope is
indicated as R&S MXO 4.
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R&S®MXO 4 Series
Contents
1 Safety and regulatory information......................................................15
1.1 Safety instructions......................................................................................................15
1.2 Labels on the product.................................................................................................20
1.3 Warning messages in the documentation................................................................ 20
1.4 Where to find key documents on Rohde & Schwarz............................................... 21
1.5 Korea certification class A......................................................................................... 21
2 Preface.................................................................................................. 22
2.1 Documentation overview............................................................................................22
2.1.1 Manuals and instrument help........................................................................................ 22
2.1.2 Specifications and brochure..........................................................................................23
Contents
2.1.3 Calibration certificate.....................................................................................................23
2.1.4 Release notes, open source acknowledgment............................................................. 23
3 Getting Started..................................................................................... 24
3.1 Preparing for use........................................................................................................ 24
3.1.1 Lifting and carrying........................................................................................................24
3.1.2 Unpacking and checking............................................................................................... 24
3.1.3 Choosing the operating site.......................................................................................... 24
3.1.4 Setting up the product................................................................................................... 25
3.1.5 Considerations for test setup........................................................................................ 26
3.1.6 Connecting to power..................................................................................................... 27
3.1.7 Switching on or off.........................................................................................................27
3.1.8 Connecting external devices......................................................................................... 28
3.2 Instrument tour............................................................................................................29
3.2.1 Front view......................................................................................................................29
3.2.2 Side view.......................................................................................................................32
3.2.3 Rear view...................................................................................................................... 32
3.2.4 Keys and controls..........................................................................................................34
3.2.5 Checking the functionality............................................................................................. 41
4 Operating the instrument.................................................................... 44
4.1 Means of manual interaction......................................................................................44
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4.2 Touchscreen display...................................................................................................45
4.2.1 Information on the display............................................................................................. 45
4.2.2 Control elements on the touchscreen........................................................................... 48
4.3 Applications.................................................................................................................50
4.4 Working with waveforms............................................................................................50
4.5 Rohde & Schwarz SmartGrid..................................................................................... 52
4.6 Toolbar......................................................................................................................... 54
4.6.1 Using the toolbar........................................................................................................... 54
4.6.2 Configuring the toolbar..................................................................................................54
4.6.3 Toolbar functions...........................................................................................................55
4.7 Displaying results....................................................................................................... 57
4.8 Using dialog boxes..................................................................................................... 58
4.9 Entering data............................................................................................................... 59
Contents
4.10 Instrument information and notifications................................................................. 61
4.11 Getting information and help.....................................................................................62
4.11.1 Displaying help..............................................................................................................62
4.11.2 Using help..................................................................................................................... 63
4.12 Adding annotations.................................................................................................... 63
5 Instrument setup..................................................................................65
5.1 System settings...........................................................................................................65
5.1.1 About settings............................................................................................................... 66
5.1.2 Network settings............................................................................................................66
5.1.3 Remote settings............................................................................................................ 68
5.1.4 Localization settings......................................................................................................69
5.1.5 Date and time settings.................................................................................................. 70
5.2 Option settings............................................................................................................71
5.2.1 Software options settings.............................................................................................. 71
5.3 Appearance settings...................................................................................................72
5.3.1 Colors............................................................................................................................72
5.3.2 Grid............................................................................................................................... 74
5.3.3 Dialogs.......................................................................................................................... 76
5.3.4 Measure........................................................................................................................ 77
5.3.5 Peak list.........................................................................................................................78
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5.3.6 Miscellaneous............................................................................................................... 78
5.4 Display settings...........................................................................................................79
5.4.1 Persistence settings...................................................................................................... 79
5.4.2 Signal settings...............................................................................................................80
5.4.3 Backlight settings.......................................................................................................... 81
5.5 Front panel settings....................................................................................................82
5.5.1 Hardkeys: function assignment..................................................................................... 82
5.5.2 Knobs............................................................................................................................ 83
5.5.3 LED............................................................................................................................... 83
5.6 Preset setup.................................................................................................................83
5.6.1 Preset settings.............................................................................................................. 84
5.6.2 Factory preset............................................................................................................... 85
5.6.3 Secure erase.................................................................................................................85
Contents
5.6.4 Restoring settings......................................................................................................... 86
5.7 Maintenance settings..................................................................................................87
5.7.1 Firmware update........................................................................................................... 87
5.7.2 Alignment...................................................................................................................... 87
5.7.3 Power management...................................................................................................... 90
5.8 Save / recall................................................................................................................. 90
5.8.1 Autonaming................................................................................................................... 90
5.8.2 CSV export....................................................................................................................93
6 Acquisition and waveform setup........................................................94
6.1 Horizontal setup.......................................................................................................... 94
6.1.1 About the horizontal system..........................................................................................94
6.1.2 Horizontal Setup settings.............................................................................................. 95
6.1.3 Zoom settings................................................................................................................96
6.1.4 Reference clock............................................................................................................ 96
6.2 Acquisition...................................................................................................................97
6.2.1 About the acquisition system........................................................................................ 97
6.2.2 Acquisition Setup settings............................................................................................. 98
6.2.3 Segmentation settings.................................................................................................102
6.2.4 High definition mode................................................................................................... 103
6.2.5 History settings............................................................................................................104
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6.2.6 Speed..........................................................................................................................104
6.3 Vertical setup.............................................................................................................105
6.3.1 About the vertical system............................................................................................ 106
6.3.2 Vertical Setup settings.................................................................................................106
6.3.3 Bandwidth settings...................................................................................................... 109
6.3.4 Probe settings..............................................................................................................110
6.3.5 Other vertical settings..................................................................................................110
6.4 Probes........................................................................................................................ 111
6.4.1 Common probe settings...............................................................................................111
6.4.2 Setup for passive probes.............................................................................................114
6.4.3 Setup for active voltage probes...................................................................................115
6.4.4 Setup for current probes............................................................................................. 122
6.4.5 Probe info....................................................................................................................124
Contents
6.4.6 Adjusting passive probes............................................................................................ 125
7 Trigger.................................................................................................127
7.1 Basics of triggering.................................................................................................. 127
7.1.1 Trigger information...................................................................................................... 128
7.2 Common trigger settings......................................................................................... 128
7.3 Trigger sequence...................................................................................................... 130
7.3.1 Sequence setup.......................................................................................................... 131
7.4 Trigger types..............................................................................................................132
7.4.1 Edge trigger.................................................................................................................132
7.4.2 Edge trigger on external trigger source.......................................................................133
7.4.3 Glitch trigger................................................................................................................135
7.4.4 Width trigger................................................................................................................137
7.4.5 Runt trigger................................................................................................................. 138
7.4.6 Window trigger............................................................................................................ 140
7.4.7 Timeout trigger............................................................................................................ 142
7.4.8 Interval trigger............................................................................................................. 143
7.4.9 Slew rate trigger.......................................................................................................... 145
7.4.10 Setup & Hold............................................................................................................... 147
7.4.11 State trigger.................................................................................................................149
7.4.12 Pattern trigger............................................................................................................. 150
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7.4.13 Line trigger.................................................................................................................. 153
7.5 Trigger mode / holdoff.............................................................................................. 153
7.6 Hysteresis.................................................................................................................. 156
7.7 Channel filter............................................................................................................. 156
7.8 Actions on trigger..................................................................................................... 157
8 Waveform analysis.............................................................................160
8.1 Zoom.......................................................................................................................... 160
8.1.1 Zoom settings..............................................................................................................160
8.1.2 Zooming for details......................................................................................................163
8.2 Mathematics.............................................................................................................. 164
8.2.1 Displaying math waveforms........................................................................................ 164
8.2.2 Math waveforms settings............................................................................................ 165
Contents
8.2.3 Math filter.................................................................................................................... 168
8.2.4 Math scale settings..................................................................................................... 169
8.3 History........................................................................................................................170
8.3.1 About history............................................................................................................... 170
8.3.2 History setup............................................................................................................... 171
8.3.3 Quick access history dialog.........................................................................................174
8.3.4 Using history............................................................................................................... 174
8.4 Reference waveforms............................................................................................... 176
8.4.1 Working with reference waveforms............................................................................. 176
8.4.2 Settings for reference waveforms............................................................................... 177
9 Measurements....................................................................................184
9.1 Cursor measurements.............................................................................................. 184
9.1.1 Cursors and results of cursor measurements............................................................. 184
9.1.2 Using cursors.............................................................................................................. 185
9.1.3 Settings for cursor measurements.............................................................................. 187
9.2 Automatic measurements........................................................................................ 193
9.2.1 Measurement results...................................................................................................197
9.2.2 Gate settings for measurements................................................................................. 198
9.2.3 Reference level........................................................................................................... 200
9.2.4 Measurement types.....................................................................................................202
9.2.5 Settings for measurements......................................................................................... 205
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9.2.6 Statistics...................................................................................................................... 211
10 Spectrum analysis............................................................................. 213
10.1 Fundamentals of spectrum analysis....................................................................... 213
10.2 Configuring spectrum waveforms...........................................................................215
10.3 Spectrum setup......................................................................................................... 217
10.4 Spectrum scale..........................................................................................................220
10.5 Spectrum gate........................................................................................................... 221
10.6 Spectrum peak list.................................................................................................... 222
11 Applications........................................................................................225
11.1 Frequency response analysis (option R&S MXO4-K36)........................................225
11.1.1 About the frequency response analysis plot............................................................... 225
11.1.2 Using a frequency response analysis......................................................................... 227
Contents
11.1.3 Settings for frequency response analysis................................................................... 228
12 Data and file management.................................................................234
12.1 Save and recall user settings...................................................................................234
12.1.1 Using savesets............................................................................................................234
12.2 Save and recall waveform data................................................................................236
12.2.1 Waveform settings.......................................................................................................236
12.2.2 Saving waveforms.......................................................................................................238
12.2.3 Waveform export files..................................................................................................239
12.3 Saving results............................................................................................................244
12.4 Screenshots...............................................................................................................246
12.4.1 Screenshot settings.....................................................................................................246
12.4.2 Configuring and saving screenshots........................................................................... 249
12.5 File selection dialog..................................................................................................249
13 Protocol analysis............................................................................... 251
13.1 Basics of protocol analysis......................................................................................251
13.1.1 Setup - general settings.............................................................................................. 251
13.1.2 Advanced.................................................................................................................... 252
13.1.3 Display........................................................................................................................ 252
13.1.4 Filter............................................................................................................................ 253
13.1.5 Trigger.........................................................................................................................253
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13.1.6 Shortcuts..................................................................................................................... 254
13.1.7 Export protocol results................................................................................................ 254
13.2 SPI bus (option R&S MXO4-K510)........................................................................... 256
13.2.1 The SPI protocol......................................................................................................... 256
13.2.2 SPI configuration.........................................................................................................256
13.2.3 SPI filter.......................................................................................................................260
13.2.4 SPI trigger................................................................................................................... 263
13.2.5 SPI decode results...................................................................................................... 264
13.3 I²C (option R&S MXO4-K510)................................................................................... 266
13.3.1 The I²C protocol.......................................................................................................... 266
13.3.2 I²C configuration..........................................................................................................268
13.3.3 I2C filter.......................................................................................................................270
13.3.4 I²C trigger settings.......................................................................................................273
Contents
13.3.5 I²C decode results....................................................................................................... 276
13.4 UART (option R&S MXO4-K510).............................................................................. 279
13.4.1 The UART / RS232 interface.......................................................................................279
13.4.2 UART configuration.....................................................................................................279
13.4.3 UART filter...................................................................................................................283
13.4.4 UART trigger............................................................................................................... 285
13.4.5 UART decode results.................................................................................................. 286
13.5 CAN (option R&S MXO4-K520)................................................................................ 288
13.5.1 CAN configuration....................................................................................................... 288
13.5.2 CAN filter.....................................................................................................................291
13.5.3 CAN trigger settings.................................................................................................... 292
13.5.4 CAN decode results.................................................................................................... 298
14 Mixed signal option (MSO, R&S MXO4-B1)..................................... 300
14.1 Logic configuration...................................................................................................300
14.1.1 Setup...........................................................................................................................300
14.1.2 Bus.............................................................................................................................. 303
14.1.3 Label settings.............................................................................................................. 304
14.1.4 Skew settings.............................................................................................................. 305
14.2 Display....................................................................................................................... 307
14.2.1 Logic bus - decode table............................................................................................. 307
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15 Waveform generator (option R&S MXO4-B6).................................. 308
15.1 Setup of the waveform generator............................................................................ 308
15.1.1 General settings.......................................................................................................... 309
15.1.2 Modulation settings..................................................................................................... 323
15.1.3 Sweep settings............................................................................................................325
15.1.4 Arbitrary setup settings............................................................................................... 326
15.2 Synchronize settings................................................................................................ 328
15.3 Configuring the waveform generator...................................................................... 329
15.3.1 Configuring a function waveform.................................................................................329
15.3.2 Configuring a modulation waveform............................................................................330
15.3.3 Configuring a sine sweep waveform........................................................................... 331
15.3.4 Configuring an arbitrary waveform.............................................................................. 331
Contents
16 Network operation and remote control............................................ 333
16.1 Connecting the instrument to the network (LAN).................................................. 333
16.1.1 Connecting the instrument to the network...................................................................334
16.1.2 Assigning the IP address............................................................................................ 334
16.1.3 Using device names....................................................................................................335
16.2 Web interface.............................................................................................................335
16.2.1 Settings on the R&S MXO 4........................................................................................335
16.2.2 Web browser............................................................................................................... 336
16.3 Remote operation with VNC client.......................................................................... 339
16.4 Remote control..........................................................................................................340
16.4.1 Remote control interfaces and protocols.....................................................................340
16.4.2 Starting and stopping remote control.......................................................................... 341
16.5 Remote control - status reporting system..............................................................342
16.5.1 Hierarchy of status registers....................................................................................... 342
16.5.2 Structure of a SCPI status register..............................................................................344
16.5.3 Contents of the status registers.................................................................................. 345
16.5.4 Error queue................................................................................................................. 349
16.5.5 Reset values of the status reporting system............................................................... 350
17 Remote control commands...............................................................351
17.1 Conventions used in remote command description............................................. 351
17.2 Finding the appropriate command.......................................................................... 351
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R&S®MXO 4 Series
17.3 Frequently used parameters and suffixes.............................................................. 352
17.3.1 Waveform parameter...................................................................................................352
17.3.2 Slope parameter..........................................................................................................352
17.3.3 Polarity parameter.......................................................................................................353
17.4 Programming examples........................................................................................... 353
17.4.1 SmartGrid layout with zoom........................................................................................ 353
17.5 Common commands.................................................................................................357
17.6 General remote settings........................................................................................... 360
17.7 Instrument setup....................................................................................................... 362
17.7.1 System........................................................................................................................ 362
17.7.2 SmartGrid....................................................................................................................364
17.7.3 Appearance.................................................................................................................369
17.7.4 Display........................................................................................................................ 372
Contents
17.7.5 Maintenance................................................................................................................376
17.8 Acquisition and setup...............................................................................................377
17.8.1 Starting and stopping acquisition................................................................................ 377
17.8.2 Horizontal setup.......................................................................................................... 378
17.8.3 Vertical setup...............................................................................................................380
17.8.4 Waveform data export.................................................................................................385
17.8.5 Acquisition setup......................................................................................................... 386
17.8.6 Fast segmentation.......................................................................................................391
17.8.7 Probes.........................................................................................................................392
17.8.8 High definition mode................................................................................................... 405
17.8.9 Reference clock.......................................................................................................... 406
17.9 Trigger........................................................................................................................407
17.9.1 Common trigger settings............................................................................................. 408
17.9.2 Trigger sequence........................................................................................................ 409
17.9.3 Edge trigger.................................................................................................................412
17.9.4 Glitch trigger................................................................................................................414
17.9.5 Width trigger................................................................................................................415
17.9.6 Runt trigger................................................................................................................. 416
17.9.7 Window trigger............................................................................................................ 419
17.9.8 Timeout trigger............................................................................................................ 422
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17.9.9 Interval trigger............................................................................................................. 422
17.9.10 Slew rate trigger.......................................................................................................... 424
17.9.11 Setup & Hold............................................................................................................... 427
17.9.12 State trigger.................................................................................................................428
17.9.13 Pattern trigger............................................................................................................. 430
17.9.14 Trigger mode, holdoff.................................................................................................. 430
17.9.15 Hysteresis................................................................................................................... 434
17.9.16 Channel filter............................................................................................................... 436
17.9.17 Actions on trigger........................................................................................................ 437
17.10 Waveform analysis....................................................................................................438
17.10.1 Zoom........................................................................................................................... 439
17.10.2 Mathematics................................................................................................................447
17.10.3 History......................................................................................................................... 451
Contents
17.10.4 Reference waveforms................................................................................................. 454
17.11 Data management..................................................................................................... 462
17.11.1 Instrument settings......................................................................................................462
17.11.2 Saveset....................................................................................................................... 468
17.11.3 Waveform export to file............................................................................................... 469
17.11.4 Results........................................................................................................................ 471
17.11.5 Screenshots................................................................................................................ 472
17.12 Automatic measurements........................................................................................ 475
17.12.1 General settings.......................................................................................................... 475
17.12.2 Measurement-specific settings....................................................................................478
17.12.3 Results........................................................................................................................ 480
17.12.4 Statistics......................................................................................................................483
17.12.5 Gate............................................................................................................................ 484
17.12.6 Reference levels......................................................................................................... 488
17.13 Cursor measurements.............................................................................................. 491
17.13.1 Cursor setup................................................................................................................492
17.13.2 Cursor results..............................................................................................................498
17.13.3 Peak search using cursors..........................................................................................499
17.13.4 Cursor appearance..................................................................................................... 501
17.14 Spectrum analysis.................................................................................................... 502
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17.14.1 Spectrum setup........................................................................................................... 502
17.14.2 Spectrum gate.............................................................................................................510
17.14.3 Peak list.......................................................................................................................512
17.14.4 Data export of spectrum waveforms........................................................................... 514
17.15 Applications...............................................................................................................515
17.15.1 Frequency response analysis (option R&S MXO4-K36)............................................. 515
17.16 Protocols....................................................................................................................528
17.16.1 Configuration settings for all serial protocols.............................................................. 528
17.16.2 SPI (option R&S MXO4-K510).................................................................................... 531
17.16.3 I²C (option R&S MXO4-K510)..................................................................................... 547
17.16.4 UART / RS232 (option R&S MXO4-K510).................................................................. 563
17.16.5 CAN / CAN-FD (option R&S MXO4-K520)..................................................................576
17.17 Mixed signal option (option R&S MXO4-B1)...........................................................594
Contents
17.17.1 Digital channels...........................................................................................................595
17.17.2 Logic configuration...................................................................................................... 597
17.17.3 MSO data.................................................................................................................... 604
17.18 Waveform generator (option R&S MXO4-B6)......................................................... 606
17.18.1 Waveform generator setup..........................................................................................606
17.18.2 Synchronize settings................................................................................................... 621
17.19 Status reporting........................................................................................................ 623
17.19.1 General commands.....................................................................................................623
17.19.2 STATus:OPERation register........................................................................................623
17.19.3 STATus:QUEStionable registers................................................................................. 624
17.19.4 Measurement status register.......................................................................................629
17.19.5 Channel status register............................................................................................... 633
17.19.6 Programming tips and examples.................................................................................637
18 Maintenance and support..................................................................639
18.1 Cleaning..................................................................................................................... 639
18.2 Changing fuses......................................................................................................... 639
18.3 Contacting customer support..................................................................................639
18.4 Data security..............................................................................................................640
18.5 Transporting.............................................................................................................. 640
18.6 Storage.......................................................................................................................641
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18.7 Disposal..................................................................................................................... 641
List of commands.............................................................................. 642
Index....................................................................................................661
Contents
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R&S®MXO 4 Series
1 Safety and regulatory information
The product documentation helps you to use the product safely and efficiently. Follow
the instructions provided here and in the Chapter 1.1, "Safety instructions",
on page 15.
Intended use
The R&S MXO 4 oscilloscope is designed for measurements on circuits that are only
indirectly connected to the mains or not connected at all. It is not rated for any measurement category.
The product is intended for the development, production and verification of electronic
components and devices in industrial, administrative, and laboratory environments.
Use the product only for its designated purpose. Observe the operating conditions and
performance limits stated in the data sheet.
Where do I find safety information?
Safety and regulatory information
Safety instructions
Safety information is part of the product documentation. It warns you of potential dangers and gives instructions on how to prevent personal injury or damage caused by
dangerous situations. Safety information is provided as follows:
●
In Chapter 1.1, "Safety instructions", on page 15. The same information is provided in many languages as printed "Safety Instructions". The printed "Safety
Instructions" are delivered with the product.
●
Throughout the documentation, safety instructions are provided when you need to
take care during setup or operation.
1.1 Safety instructions
Products from the Rohde & Schwarz group of companies are manufactured according
to the highest technical standards. To use the products safely, follow the instructions
provided here and in the product documentation. Keep the product documentation
nearby and offer it to other users.
Use the product only for its intended use and within its performance limits. Intended
use and limits are described in the product documentation such as the data sheet,
manuals and the printed "Safety Instructions". If you are unsure about the appropriate
use, contact Rohde & Schwarz customer service.
Using the product requires specialists or specially trained personnel. These users also
need sound knowledge of at least one of the languages in which the user interfaces
and the product documentation are available.
Reconfigure or adjust the product only as described in the product documentation or
the data sheet. Any other modifications can affect safety and are not permitted.
Never open the casing of the product. Only service personnel authorized by
Rohde & Schwarz are allowed to repair the product. If any part of the product is dam-
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R&S®MXO 4 Series
aged or broken, stop using the product. Contact Rohde & Schwarz customer service at
https://www.rohde-schwarz.com/support.
In these safety instructions, the term "product" covers instruments (oscilloscopes),
probes and their accessories.
Lifting and carrying the instrument
Check the data sheet for the maximum weight of the instrument. A single person can
only carry a maximum of 18 kg safely depending on age, gender and physical condition. If your instrument is heavier than 18 kg, do not move or carry it by yourself.
Use the instrument handles to move or carry the instrument. Do not use the mounted
accessories instead of the handles. Accessories are not designed to carry the weight
of the instrument.
To move the instrument safely, you can use lifting or transporting equipment such as lift
trucks and forklifts. Follow the instructions provided by the equipment manufacturer.
Choosing the operating site
Safety and regulatory information
Safety instructions
Only use the product indoors. The product casing is not waterproof. Water that enters
can electrically connect the casing with live parts, which can lead to electric shock,
serious personal injury or death if you touch the casing. If Rohde & Schwarz provides
accessories designed for your product, e.g. a carrying bag, you can use the product
outdoors.
Unless otherwise specified in the data sheet, you can operate the product up to an altitude of 2000 m above sea level.
The product is suitable for pollution degree 2 environments where nonconductive contamination can occur. For more information on environmental conditions such as ambient temperature and humidity, see the data sheet.
Setting up the product
Always place the product on a stable, flat and level surface with the bottom of the product facing down. If the product is designed for different positions, secure the product so
that it cannot fall over.
If the product has foldable feet, always fold the feet completely in or out to ensure stability. The feet can collapse if they are not folded out completely or if the product is
moved without lifting it. The foldable feet are designed to carry the weight of the product, but not an extra load.
If stacking is possible, keep in mind that a stack of products can fall over and cause
injury.
If you mount products in a rack, ensure that the rack has sufficient load capacity and
stability. Observe the specifications of the rack manufacturer. Always install the products from the bottom shelf to the top shelf so that the rack stands securely. Secure the
product so that it cannot fall off the rack.
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R&S®MXO 4 Series
Connecting to power and grounding
The mains power supply input of the instrument complies with overvoltage category II.
It has to be connected to a fixed installation used to supply energy-consuming equipment such as household appliances and similar loads. Be aware that electrically powered products have risks, such as electric shock, fire, personal injury or even death.
Take the following measures for your safety:
●
●
●
●
●
●
●
●
Safety and regulatory information
Safety instructions
Do not use an isolating transformer to connect the instrument to the mains power
supply.
Before switching on the product, ensure that the voltage and frequency indicated
on the product match the available power source. If the power adapter does not
adjust automatically, set the correct value and check the rating of the fuse.
Only use the power cable delivered with the product. It complies with country-specific safety requirements. Only insert the plug into an outlet with protective conductor terminal.
If a product has an exchangeable fuse, its type and characteristics are indicated
next to the fuse holder. Before changing the fuse, switch off the instrument and disconnect it from the power source. How to change the fuse is described in the product documentation.
Only use intact cables and route them carefully so that they cannot be damaged.
Check the power cables regularly to ensure that they are undamaged. Also ensure
that nobody can trip over loose cables.
If the product needs an external power supply, use the power supply that is delivered with the product or that is recommended in the product documentation or a
power supply that conforms to the country-specific regulations.
Ensure that you can disconnect the product from the power source at any time.
Pull the power plug to disconnect the product. The power plug must be easily
accessible. If the product is integrated into a system that does not meet these
requirements, provide an easily accessible circuit breaker at the system level.
Replace parts that are relevant to safety only by original parts, e.g. power cables or
fuses.
Performing measurements
Take the following measures for your safety:
●
To ascertain voltage-free state, use an appropriate voltage tester. Any measurement setup including an oscilloscope is not suitable for this purpose.
●
The maximum input voltage on channel inputs and the external trigger input must
not exceed the value specified in the data sheet.
●
Observe all voltage and current ratings of the instrument, the probes, and the
accessories. Exceeding the allowed voltages can lead to an electric shock.
Limits and ratings are marked on the products and listed in the data sheets.
Consider that the rated voltage depends on the frequency. The voltage limitation
curves or values are provided in the data sheet.
●
Never cause any short circuits when measuring sources with high output currents.
●
Use only probes and accessories that comply with the measurement category
(CAT) of your measurement task. The measurement category of the products is
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R&S®MXO 4 Series
●
●
●
●
●
Working with hazardous voltages
Safety and regulatory information
Safety instructions
defined in the data sheet. If you use other than Rohde & Schwarz accessories,
make sure that they are suitable for the instrument and the measurement task.
Set the correct attenuation factor on the instrument according to the probe being
used. Otherwise, the measurement results do not reflect the actual voltage level,
and you might misjudge the actual risk.
When working with high voltages and current probes, observe the additional operating conditions specified in this safety instructions.
The probe pins are extremely pointed and can easily penetrate clothes and the
skin. Handle the probe pins with great care. To exchange a probe pin, use tweezers or pliers to avoid injuries. When transporting the accessories, always use the
box supplied with the probe.
Prevent the probe from receiving mechanical shock. Avoid putting excessive strain
on the probe cable or exposing it to sharp bends. Touching a broken cable during
measurements can cause injuries.
Set up all probe connections to the instrument before applying power.
Voltages higher than 30 V RMS, or 42 V peak, or 60 V DC are regarded as hazardous
contact voltages. Direct contact with them can cause serious injuries.
Make sure that only electrically skilled persons use the products for measurements on
hazardous contact voltages. These working conditions require special education and
experience to perceive risks and to avoid hazards which electricity can create.
When working with hazardous contact voltages, use protective measures to preclude
direct contact with the measurement setup:
●
Do not touch exposed connections and components when power is applied.
●
Switch off the test circuit while connecting and disconnecting probe leads.
●
Use only insulated voltage probes, test leads and adapters.
●
Make sure that the input leads fulfill the safety requirements for your measurement.
The delivered input leads might have a jacket wear indicator that indicates a worn
jacket by different jacket color. In this case, do not use the input lead. Replace it
with a new one.
●
Do not use 4 mm banana plugs without protection against contact.
Working with current probes
When working with current probes, you can measure high-frequency currents or currents that contain high-frequency components.
●
Switch off the test circuit while connecting the probe.
●
Do not attach the clamp to bare unisolated conductors. To avoid injury from a short
circuit, measure at a location on an insulated wire where the insulation is sufficient
for the circuit voltage.
●
Connect the probe only to the secondary side of a breaker. With this measure, you
avoid injury, if a short circuit occurs.
●
The following effects can cause burns and fire or damage to the measurement site:
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R&S®MXO 4 Series
Measurement categories
IEC 61010-2-030 defines measurement categories that rate instruments on their ability
to resist short transient overvoltages that occur in addition to the working voltage. Use
the measurement setup only in electrical environments for which they are rated.
●
●
●
●
Safety and regulatory information
Safety instructions
– Eddy current loss can cause heating of the sensor head.
– Dielectric heating can cause heating of cord insulation and other materials.
0 - Instruments without rated measurement category
For measurements performed on circuits not directly connected to mains, for example, electronics, circuits powered by batteries, and specially protected secondary
circuits. This measurement category is also known as CAT I.
CAT II:
For measurements performed on circuits directly connected to the low-voltage
installation by a standard socket outlet, for example, household appliances and
portable tools.
CAT III:
For measurements performed in the building installation, such as junction boxes,
circuit breakers, distribution boards, and equipment with permanent connection to
the fixed installation.
CAT IV:
For measurements performed at the source of the low-voltage installation, such as
electricity meters and primary overcurrent protection devices.
Cleaning the product
Use a dry, lint-free cloth to clean the product. When cleaning, keep in mind that the
casing is not waterproof. Do not use liquid cleaning agents.
Meaning of safety labels
Safety labels on the product warn against potential hazards.
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R&S®MXO 4 Series
1.2 Labels on the product
Labels on the casing inform about:
●
●
●
Safety and regulatory information
Warning messages in the documentation
Potential hazard
Read the product documentation to avoid personal injury or product damage.
Electrical hazard
Indicates live parts. Risk of electric shock, fire, personal injury or even death.
Protective conductor terminal
Connect this terminal to a grounded external conductor or to protective ground. This protects
you against electric shock should an electric problem occur.
Personal safety, see "Meaning of safety labels" on page 19
Product and environment safety, see Table 1-1
Identification of the product
Table 1-1: Labels regarding product and environment safety
Chassis grounding terminal
Take care when handling electrostatic sensitive devices.
Labeling in line with EN 50419 for disposal of electrical and electronic equipment after the product has come to the end of its service life.
For more information, see "Disposing electrical and electronic equipment" on page 641.
1.3 Warning messages in the documentation
A warning message points out a risk or danger that you need to be aware of. The signal word indicates the severity of the safety hazard and how likely it will occur if you do
not follow the safety precautions.
WARNING
Potentially hazardous situation. Could result in death or serious injury if not avoided.
CAUTION
Potentially hazardous situation. Could result in minor or moderate injury if not avoided.
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R&S®MXO 4 Series
NOTICE
Potential risks of damage. Could result in damage to the supported product or to other
property.
1.4 Where to find key documents on Rohde & Schwarz
Certificates issued to Rohde & Schwarz that are relevant for your country are provided
at www.rohde-schwarz.com/key-documents, e.g. concerning:
●
●
●
●
Safety and regulatory information
Korea certification class A
Quality management
Environmental management
Information security management
Accreditations
1.5 Korea certification class A
이 기기는 업무용(A급) 전자파 적합기기로서 판매자 또는 사용자는 이 점을 주의하시기
바라며, 가정외의 지역에서 사용하는 것을 목적으로 합니다.
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R&S®MXO 4 Series
2 Preface
2.1 Documentation overview
This section provides an overview of the R&S MXO 4 user documentation.
2.1.1 Manuals and instrument help
You find the manuals on the product page at:
www.rohde-schwarz.com/manual/mxo4
Getting started manual
Introduces the R&S MXO 4 and describes how to set up the product. A printed English
version is included in the delivery.
Preface
Documentation overview
User manual and help
Contains the description of all instrument modes and functions. It also provides an
introduction to remote control, a complete description of the remote control commands
with programming examples, and information on maintenance and instrument interfaces. Includes the contents of the getting started manual.
The contents of the user manual are available as help in the R&S MXO 4. The help
offers quick, context-sensitive access to the complete information on the instrument
and its firmware.
The user manual is available for download or for immediate display on the internet.
Safety instructions
Provides safety information in many languages. The printed document is delivered with
the product.
Instrument security procedures manual
Deals with security issues when working with the R&S MXO 4 in secure areas. It is
available for download on the internet.
Service manual
Describes the performance test for checking compliance with rated specifications, firmware update, adjustments, installing options and maintenance. The service manual is
available for registered users on the global Rohde & Schwarz information system
(GLORIS, https://gloris.rohde-schwarz.com).
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R&S®MXO 4 Series
2.1.2 Specifications and brochure
The data sheet contains the technical specifications of the R&S MXO 4. It also lists the
firmware applications and their order numbers, and optional accessories. The brochure
provides an overview of the instrument and deals with the specific characteristics.
www.rohde-schwarz.com/brochure-datasheet/mxo4
2.1.3 Calibration certificate
The document is available on https://gloris.rohde-schwarz.com/calcert. You need the
device ID of your instrument, which you can find on a label on the rear panel.
2.1.4 Release notes, open source acknowledgment
The release notes list new features, improvements and known issues of the current
firmware version, and describe the firmware installation. The open source acknowledgment document provides verbatim license texts of the used open source software. It
can also be read directly on the instrument.
Preface
Documentation overview
www.rohde-schwarz.com/firmware/mxo4
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R&S®MXO 4 Series
3 Getting Started
3.1 Preparing for use
Here, you can find basic information about setting up the instrument for the first time or
when changing the operating site.
3.1.1 Lifting and carrying
See: "Lifting and carrying the instrument" on page 16.
3.1.2 Unpacking and checking
Getting Started
Preparing for use
1. Unpack the product carefully.
2. Retain the original packing material. Use it when transporting or shipping the product later.
3. Using the delivery notes, check the equipment for completeness.
4. Check the equipment for damage.
If the delivery is incomplete or equipment is damaged, contact Rohde & Schwarz.
3.1.3 Choosing the operating site
Specific operating conditions ensure proper operation and avoid damage to the product and connected devices. For information on environmental conditions such as ambient temperature and humidity, see the data sheet.
See also "Choosing the operating site" on page 16.
Electromagnetic compatibility classes
The electromagnetic compatibility (EMC) class indicates where you can operate the
product. The EMC class of the product is given in the data sheet.
●
Class B equipment is suitable for use in:
– Residential environments
– Environments that are directly connected to a low-voltage supply network that
supplies residential buildings
●
Class A equipment is intended for use in industrial environments. It can cause
radio disturbances in residential environments due to possible conducted and radiated disturbances. It is therefore not suitable for class B environments.
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R&S®MXO 4 Series
3.1.4 Setting up the product
When setting up the instrument, follow the safety instructions:
●
●
3.1.4.1 Placing the product on a bench top
For standalone operation, place the instrument on a horizontal bench with even, flat
surface. The instrument can be used in horizontal position, standing on its feet, or with
the support feet on the bottom extended.
To place the product on a bench top
Getting Started
Preparing for use
If class A equipment causes radio disturbances, take appropriate measures to
eliminate them.
"Setting up the product" on page 16
"Intended use" on page 15
1. Place the product on a stable, flat and level surface.
CAUTION! The top surface of the product is too small for stacking. If you stack
2.
another product on top of the product, the stack can fall over and cause injury.
If you want to save space, mount several products in a rack.
CAUTION! Foldable feet can collapse. See "Setting up the product" on page 16.
3.
Always fold the feet completely in or out. With folded-out feet, do not place anything on top or underneath.
NOTICE! Overheating can damage the product.
4.
Prevent overheating as follows:
● Keep a minimum distance of 10 cm between the fan openings of the product
and any object in the vicinity.
● Do not place the product next to heat-generating equipment such as radiators
or other products.
3.1.4.2 Mounting the product in a rack
The instrument can be installed in a rack using a rack adapter kit. The order number is
given in the data sheet. The installation instructions are part of the adapter kit.
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R&S®MXO 4 Series
To prepare the rack
1. Observe the requirements and instructions in "Setting up the product" on page 16.
2.
To mount the R&S MXO 4 in a rack
1. Use an adapter kit that fits the dimensions of the R&S MXO 4 to prepare the instru-
2. Push the product onto the shelf until the rack brackets fit closely to the rack.
3. Tighten all screws at the rack brackets with a tightening torque of 1.2 Nm to secure
Getting Started
Preparing for use
NOTICE! Insufficient airflow can cause overheating and damage the product.
Design and implement an efficient ventilation concept for the rack.
ment for rack mounting. For information on the dimensions, see data sheet.
a) Order the rack adapter kit designed for the R&S MXO 4. For the order number,
see data sheet.
b) Mount the adapter kit. Follow the assembly instructions provided with the
adapter kit.
the product at the rack.
To unmount the product from a rack
1. Loosen the screws at the rack brackets.
2. Remove the product from the rack.
3. If placing the product on a bench top again, unmount the adapter kit from the product. Follow the instructions provided with the adapter kit.
3.1.5 Considerations for test setup
Observe safety instructions, see "Performing measurements" on page 17.
Cable selection and electromagnetic interference (EMI)
Electromagnetic interference (EMI) can affect the measurement results.
To suppress electromagnetic radiation during operation:
●
Use high-quality shielded cables, for example, double-shielded RF and LAN
cables.
●
Always terminate open cable ends.
●
Ensure that connected external devices comply with EMC regulations.
Measuring accessories
Use only probes and measuring accessories that comply with IEC 61010-031.
Signal input and output levels
Information on signal levels is provided in the data sheet. Keep the signal levels within
the specified ranges to avoid damage to the product and connected devices.
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R&S®MXO 4 Series
Preventing electrostatic discharge (ESD)
Electrostatic discharge is most likely to occur when you connect or disconnect a DUT.
►
During operation, if the firmware observes a serious unexpected disturbance (e.g. due
to ESD), it resets some hardware components and initiates a new alignment to ensure
proper instrument functioning. Then it restores the user settings to the state before the
disturbance.
3.1.6 Connecting to power
Getting Started
Preparing for use
NOTICE! Electrostatic discharge can damage the electronic components of the
product and the device under test (DUT).
Ground yourself to prevent electrostatic discharge damage:
a) Use a wrist strap and cord to connect yourself to ground.
b) Use a conductive floor mat and heel strap combination.
For safety information, see "Connecting to power and grounding" on page 17.
The R&S MXO 4 can be used with different AC power voltages and adapts itself automatically to it.
The nominal ranges are indicated on a label near the power connector on the instrument and in the data sheet.
1. Plug the AC power cable into the AC power connector on the rear panel of the
product. Only use the AC power cable delivered with the product.
2. Plug the AC power cable into a power outlet with ground contact.
The required ratings are listed next to the AC power connector and in the data
sheet.
3.1.7 Switching on or off
The instrument is switched on or off with the power switch and the [Power] key. The
[Power] key is located in the bottom left corner of the front panel. The power switch is
located at the rear panel of the instrument.
Table 3-1: Overview of power states
Status LED Power switch
Off
Standby
Ready
(unlighted)
yellow
green
[0] (off)
[I] (on)
[I] (on)
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R&S®MXO 4 Series
To switch on the product
The product is off but connected to power.
1. Set the switch on the power supply to position [I].
2. Press the [Power] key on the front panel.
Before you start measurements, be sure to comply with the warm-up phase specified
in the data sheet.
To shut down the product
The product is in the ready state.
Getting Started
Preparing for use
The power key on the front panel lights up.
The instrument performs a system check, boots the operating system, and then
starts the R&S MXO 4 firmware.
The [Power] key turns green and the illuminated keys on the front panel light up. If
the previous session was terminated regularly, the oscilloscope uses the last settings.
► Press the [Power] key.
All current settings are saved, and the software shuts down. The [Power] key turns
yellow. The standby power supplies only the power switch circuits.
The
"Power" icon in the "Menu" shuts down only the firmware application. To shut
down the instrument completely, use the [Power] key.
To disconnect from power
The product is in the standby state.
NOTICE! Risk of data loss. If you disconnect the product from power when it is in
1.
the ready state, you can lose settings and data. Shut it down first.
Set the switch on the power supply to position [0].
The LED of the [Power] key is switched off.
2. Disconnect the product from the power source.
3.1.8 Connecting external devices
The following interfaces for external devices are provided:
●
USB connectors at the front and rear panel of the instrument
●
HDMI connector at the rear panel of the instrument
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R&S®MXO 4 Series
3.1.8.1 Connecting USB devices
You can connect USB flash drives to save screenshots and measurement results, and
keyboard and/or mouse to simplify the operation and the entry of data. You can connect or disconnect all USB devices during operation of the instrument.
USB devices are plug&play, the operating system automatically uses the suitable
device driver.
3.1.8.2 Connecting an external monitor
Using the HDMI connector on the rear panel, you can connect an external monitor or
projector to the R&S MXO 4.
Before connecting an external monitor, ensure that the monitor and the R&S MXO 4
are connected to a ground contact. Otherwise the instrument can be damaged.
The touchscreen of the R&S MXO 4 has a screen resolution of 1920x1080 pixels. If the
screen resolution of the monitor is set higher than the instrument's resolution, the application window uses a 1920x1080 pixels area of the monitor display. For full screen display, adjust the monitor's screen resolution.
Getting Started
Instrument tour
3.2 Instrument tour
This section describes the front, rear and side view of the instrument including all function keys and connectors.
The meanings of the labels on the product are described in Chapter 3.2, "Instrument
tour", on page 29.
3.2.1 Front view
This section provides an overview of the R&S MXO 4 front panel.
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R&S®MXO 4 Series
Getting Started
Instrument tour
Figure 3-1: Front panel of R&S MXO 4 with 4 input channels
1 = Display
2 = Keys and controls
3 = External trigger input
4 = Analog input channels
5 = Connectors for probe compensation
6 = Connectors for demo signal output
7 = USB connectors
8 = Connectors for logic probe (R&S MXO4-B1 Mixed Signal Option)
9 = Connector for optional function generator output (BNC, R&S MXO4-B6 Arbitrary waveform generator
option )
10 = [Power] key
3.2.1.1 Input connectors
Channel inputs
The R&S MXO 4 has four channel inputs (4) to connect the input signals.
For channel connectors, the input impedance is selectable, the values are 50 Ω and
1 MΩ.
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R&S®MXO 4 Series
The maximum input voltage on channel inputs is:
●
●
Trigger input
The external trigger input (3) is used to control the measurement by an external signal.
The trigger level can be set from -5 V to 5 V.
For the external trigger input, the maximum input voltage is 400 V (Vp) and
300 V (RMS) at 1 MΩ input impedance.
Transient overvoltages on all input connectors must not exceed 400 V (Vp).
3.2.1.2 Other connectors on the front panel
Getting Started
Instrument tour
400 V (Vp) and 300 V (RMS) at 1 MΩ input impedance
30 V (Vp) and 5 V (RMS) at 50 Ω input impedance
Gen: Function Generator (9)
BNC output of the function generator, requires option R&S MXO4-B6.
Logic Channels (8)
Two connectors for logical probes with 8 digital channels each (D0 to D7 and D8 to
D15). Using logic channels requires the Mixed Signal Option R&S MXO4-B1.
The maximum input voltage is 40 V (Vp) at 100 kΩ input impedance. The maximum
input frequency for a signal with the minimum input voltage swing and medium hysteresis of 800 mV (Vpp) is 400 MHz.
USB (7)
Two USB 2.0 type A and one USB 3.0 interfaces. They are used to connect a mouse
or keyboard, a USB flash drive for storing and reloading instrument settings and measurement data, and to update the firmware.
Demo (6)
The pins are intended for demonstration purposes.
Probe Comp. (5)
Probe compensation terminal to adjust passive probes to the oscilloscope channel.
Square wave signal for probe compensation.
Ground connector for probes.
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R&S®MXO 4 Series
3.2.2 Side view
Getting Started
Instrument tour
Figure 3-2: Side view of R&S MXO 4
1 = Grounding
On the side of the instrument, you can find the ground connector for probes.
3.2.3 Rear view
On the rear panel of the R&S MXO 4, you find more connectors and the power supply
switch.
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R&S®MXO 4 Series
Getting Started
Instrument tour
Figure 3-3: Rear panel view of R&S MXO 4
1 = Aux Out connector
2 = Ref. In 10MHz
3 = Ref. Out
4 = LAN connector
5 = HDMI display output
6 = USB B connector, type B
7 = USB connector
8 = AC power supply connector and main power switch
9 = Kensington lock slot to secure the instrument against theft
10 = VESA mounting holes to mount the instrument on a monitor arm
Aux Out
BNC output that can function as pass/fail output or trigger output.
Ref. In 10MHz
BNC input connector for 10 MHz reference frequency signals.
Ref. Out
BNC output for 10 MHz frequency reference. Can be switched between internal and
external reference.
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R&S®MXO 4 Series
LAN
8-pin connector RJ-45 used to connect the instrument to a Local Area Network (LAN).
It supports up to 1 Gbit/s.
HDMI
HDMI Version 2.0 connector for an external monitor or projector. The monitor shows
the complete content of the instrument's screen.
AC power supply connector and main power switch
The instrument supports a wide range power supply. It automatically adjusts to the correct range for the applied voltage. There is no line voltage selector.
The AC main power switch disconnects the instrument from the AC power line.
When you power up the instrument, be sure to comply with the warm-up phase specified in the data sheet before you start measurements.
3.2.4 Keys and controls
Getting Started
Instrument tour
For an overview of the front panel keys, see Figure 3-1.
3.2.4.1 Power key
The [Power] key is located on the lower left corner of the front panel. It starts up and
shuts down the instrument's software.
The light of the key shows the instrument state, see Chapter 3.1.7, "Switching on or
off", on page 27.
3.2.4.2 Trigger controls
The keys and knob in the Trigger functional block adjust the trigger and start or stop
acquisition.
[Level]
The rotary knob sets the trigger level for all trigger types that require one level. For trigger types with two levels, the knob sets the lower level. Turn clockwise to move up the
trigger level. Press the knob to set the trigger level to 50% of the signal amplitude.
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R&S®MXO 4 Series
Remote command:
TRIGger:EVENt<m>:LEVel<n>[:VALue] on page 408
[Run / Stop]
Starts and stops the continuous acquisition. The [Run / Stop] key lights green when the
acquisition is running. When the acquisition is stopped, the key lights red.
Remote command:
RUN on page 377
STOP on page 378
[Single]
Starts a defined number of acquisitions. The [Single] key lights green when the acquisition is running. When the acquisition is stopped, the key lights red.
Press the key again to stop a running acquisition. To set the number of acquisitions,
select "Menu" > "Acquisition", and set "N-single/Avg count".
Remote command:
SINGle on page 378
Getting Started
Instrument tour
[Auto Norm]
Toggles the trigger mode between "Auto" and "Normal". The current setting is shown
on the trigger label.
Auto
Norm
Remote command:
TRIGger:MODE on page 431
[Source]
Toggles the trigger source: C1, C2, C3, C4. The key lights up in the color of the
selected channel.
[Slope]
Toggles the trigger slope or trigger polarity, dependent on the trigger type. The current
setting is shown on the trigger label.
[Zone]
For future use.
The instrument triggers repeatedly after a time interval if the trigger
conditions are not fulfilled. If a real trigger occurs, it takes precedence. The time interval depends on the time base.
The instrument acquires a waveform only if a trigger occurs. The
"Norm" LED lights up in green.
3.2.4.3 Horizontal controls
The rotary knobs in the Horizontal functional block adjust the horizontal parameters.
These settings are effective for all channel waveforms. In addition, a [Zoom] key is
available.
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R&S®MXO 4 Series
[Position]
The rotary knob changes the horizontal position of the waveforms. Turn clockwise to
move the waveforms to the right. To set the value to zero, press the knob. The current
value is shown in the "Horizontal" label above the diagram.
The horizontal position defines the zero point of the diagram. It is the time distance to
the reference point, which marks the rescaling center of the time scale.
Remote command:
TIMebase:HORizontal:POSition on page 379
Getting Started
Instrument tour
[Scale]
The rotary knob adjusts the time scale for all signals. The time scale is also known as
timebase.
Turn clockwise to stretch the waveforms. Doing so, the scale value time/div decreases.
Press the knob to toggle between coarse and fine scale adjustment.
Remote command:
TIMebase:SCALe on page 378
[Zoom]
Activates a zoom and supports the zoom setup.
If no zoom is on, the first press opens a zoom diagram for the active diagram. If at
least one zoom is shown, the keypress opens the "Zoom" dialog. If only one zoom is
defined, the next press closes the dialog and removes the zoom. If several zooms are
defined and the dialog is open, the key toggles the zooms.
3.2.4.4 Vertical controls
The keys and knobs in the Vertical functional block select a signal and adjust the vertical scale and position of the selected signal.
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R&S®MXO 4 Series
[C <n>]
Turns on and selects a channel. If the channel is active, the key lights up in the corresponding channel color.
The effect of the keypress depends on state of the channel:
●
●
●
●
The vertical rotary knobs are focused on the selected waveform. They are illuminated
in the color of the selected waveform.
Remote command:
CHANnel<ch>:STATe on page 380
Getting Started
Instrument tour
If channel is off: turns on the channel and selects it.
If the channel is on and in focus (selected): opens the corresponding channel dialog.
If the channel is on, but not in focus (not selected): selects the channel waveform.
If the channel is selected, and the dialog is open: turns off the channel, and closes
the dialog.
[Position]
The vertical [Position] knob changes the vertical offset or the position of the selected
waveform. The horizontal axis and the selected waveform are moved vertically. You
can select whether the knob changes the offset or the position in the "Menu" > "Settings" > "Frontpanel" > "Knobs" dialog.
●
Position indicates the vertical location in divisions.
●
Offset moves the vertical center of the selected channel to the offset value.
If the selected waveform is a math or reference waveform, serial bus, or logic channel,
the knob changes its vertical position.
The knob lights up in the color of the selected waveform. Turn clockwise to move up
the waveform. To set the value to zero, press the knob.
The current offset value is shown in the channel icon.
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R&S®MXO 4 Series
Remote command:
CHANnel<ch>:POSition on page 381
CHANnel<ch>:OFFSet on page 381
[Scale]
Sets the vertical scale in Volts per division. The vertical scale defines the displayed
amplitude of the selected waveform.
The [Scale] knob lights up in the color of the selected waveform.
Turn the knob clockwise to stretch the waveform. Doing so, the scale value V/div
decreases. Press the knob to toggle between fine and coarse adjustment. For analog
waveforms, the scale value is shown in the signal icon.
To get the maximum resolution of the waveform amplitude, make sure that the waveforms cover most of the diagram's height.
Remote command:
CHANnel<ch>:SCALe on page 380
CALCulate:MATH<m>:VERTical:SCALe[:VALue] on page 448
REFCurve<rc>:SCALe on page 457
Getting Started
Instrument tour
[Gen]
Opens the "Waveform Generator" dialog, if option R&S MXO4-B6 is installed.
The waveform generator can generate various function and arbitrary waveforms,
sweeps, and parallel patterns. For detailed specifications, refer to the data sheet.
[Logic]
Opens the "Logic" dialog to configure and enable the logic buses L1 to L4. A logic bus
(or parallel bus) has up to 16 logic (digital) channels. If logic buses are active, pressing
the key toggles these buses.
The key lights up if at least one logic bus is enabled.
[Ref]
Opens the "Reference" dialog box, where you can configure and display reference
waveforms. Press the key repeatedly to switch the reference waveform.
If a reference waveform is selected, the vertical rotary knobs are illuminated in white or
light gray (default colors), depending on the selected waveform.
[Math]
Opens the "Math" dialog, where you can configure the calculation of mathematical
waveforms using various mathematic operations on other waveforms. Press the key
repeatedly to toggle the selected math waveform. If no math waveform is active, the
key closes the dialog.
If a math waveform is selected, the vertical rotary knobs are illuminated in blue (default
color).
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3.2.4.5 Spectrum keys
[Spectrum]
Opens and closes the "Spectrum" dialog. The key lights up if an FFT is active.
Getting Started
Instrument tour
[Freq Span]
Opens and closes the overlay menu to configure the spectrum settings.
[Peak]
Opens the overlay menu to identify the peaks and to create a peak list table of a spectrum. If the "Spectrum" dialog is open, the keypress opens and closes the peak list
table.
[User]
Performs the action that is assigned to the key in "Settings" > "Front panel" > "Hardkeys". You can assign one of the following functions to the key:
●
Force trigger (default)
●
Save a saveset with instrument settings
●
Load a saveset with instrument settings
3.2.4.6 Analysis keys
The controls in the bottom functional block have various functions.
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[Multiuse]
The multiuse knob changes the element that is in focus. It lights up when a function is
active on the knob.
●
●
●
●
Getting Started
Instrument tour
If a numeric entry field in a dialog has the focus: turn to increase or decrease the
value.
If a cursor set has the focus: press to toggle the cursor line, and turn to adjust its
position.
If a zoom has the focus: press to toggle the edges of the zoom, and turn to adjust
its position.
To change the intensity, press the [Intensity] key and turn the knob.
[Intensity]
Adjusts the intensity of the waveforms on the screen: Press the [Intensity] key and turn
the [Multiuse] knob. The current value is shown in the input box in the upper right corner of the screen.
[Cursor]
Starts a cursor measurement: sets vertical and horizontal cursors in the active diagram, and displays results of the cursor measurement. If cursors are already set, the
keypress opens the "Cursor" dialog, where you can adjust the settings. The next keypress closes the dialog.
Cursors are markers which are placed at points of interest on a waveform. The instrument measures the cursor positions and delta values between parallel cursors.
[Measure]
Opens the "Measurement" dialog, where you can set up various measurements.
[History]
Activates the history and opens the history player. The next keypress closes the player.
The history shows stored acquisitions that were acquired before the current one. The
key is illuminated as long as the history is active.
[HD]
Activates the high definition mode and opens the "HD Mode" dialog box.
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[Touch Lock]
Locks the touchscreen to prevent unintended use. When the touchscreen is off, the
key is illuminated. Press again to unlock the touchscreen.
Camera
Performs the action that is assigned to the key in "Settings" > "Front panel" > "Hardkeys". By default, the key saves a screenshot of the waveform display.
[Preset]
Resets the instrument to a predefined state and starts the continuous acquisition. All
measurements, mask tests, zoom, and most individual settings are deleted, and all
channels except for channel 1 are disabled. You can define preset configurations and
save them to a file. The [Preset] key can be configured to set either factory defaults or
a user-defined preset configuration.
[Autoset]
The instrument analyzes the enabled channel signals, and adjusts appropriate horizontal, vertical, and trigger settings to display stable waveforms.
Getting Started
Instrument tour
[Clear]
Deletes all measurement results including long-term measurement and statistics, all
waveforms, and the history.
Apps
Opens the "Apps" dialog, where you can start an application, serial protocol or another
analysis function.
3.2.5 Checking the functionality
To check if the instrument works correctly, you can use the probe compensation signal
and check the displayed signal.
1. Perform a self-alignment of the instrument:
a) Warm up the instrument. The minimum warm-up time is indicated in the data
sheet.
b) Remove all probes from the input connectors.
c) Open the "Menu", and select "Settings" > "Maintenance" > "Alignment".
d) Tap "Start Alignment". Wait until the alignment has finished successfully.
2.
Connect the probe's ground connector to the ground pin
square wave pin .
, and the tip to the
3. Press the [Preset] key.
4. Connect the probe to the input connector [C1].
The instrument recognizes the probe, and a signal is displayed in the diagram.
5. Tap the signal icon of C1 to open the vertical settings.
6. In the "Vertical" > "Setup" dialog, adjust the following:
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Getting Started
Instrument tour
● "Vertical scale" = 600 mV/div
● "Offset" = 900 mV
7. Turn the horizontal [Scale] knob to set the horizontal scale to 1 ms/div.
8. Press the [Source] key to set the trigger source to C1. The color of the key indicates the selected channel.
9. Turn the [Level] knob to set the trigger level to 300 mV.
10. Check the rectangle signal on the screen. The displayed signal should have an
amplitude of about 3.3 V, which covers 5.5 divisions.
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Getting Started
Instrument tour
11. Repeat steps 4 to 10 for channels C2, C3 and C4. Make sure to adjust the vertical
settings for the connected channel, and also to set the trigger source to the connected channel.
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4 Operating the instrument
There are three ways to operate the R&S MXO 4.
Manual operation
Use the touchscreen, keys and rotary knobs, or an optional mouse and/or keyboard.
The principles of manual operation are explained in this section.
Remote control
Create programs to automatize repeating settings, tests, and measurements. The
instrument is connected to a computer that runs the program.
This way of operation is described in: Chapter 17, "Remote control commands",
on page 351.
Remote operation
For remote monitoring and operation of the instrument, a VNC server is installed on the
R&S MXO 4. You need a LAN connection to the computer, and a VNC client or web
browser to connect to the instrument.
Operating the instrument
Means of manual interaction
For details, refer to Chapter 16, "Network operation and remote control", on page 333.
4.1 Means of manual interaction
The R&S MXO 4 provides the following means of manual interaction, which you can
use alternatively or complementary:
●
Touchscreen:
Using the touchscreen allows for direct interaction with the instrument. Use your
finger to place waveforms on the screen, mark areas for zoom, set parameters in
dialogs, enter data, and much more. The control elements and actions on the
screen are based on common concepts, and you easily become familiar with the
user interface.
Tapping the screen works like clicking mouse buttons:
– Tap = click: Selects a waveform or parameter, or provokes an action.
– Double-tap = double-click: Has the same effect as touch and hold, it opens the
on-screen keyboard or keypad, or a specific editor if available.
●
Function keys and rotary knobs:
The front panel provides frequently used functions and controls to operate the
instrument. Use knobs to set levels and scales, and keys to initiate actions and to
open dialogs.
●
Optional mouse and/or keyboard
These devices work in the normal manner.
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4.2 Touchscreen display
4.2.1 Information on the display
The touchscreen of the instrument shows the waveforms and measurement results,
and also information and everything that you need to control the instrument. All waveform-related display elements are shown in Figure 4-1. An overview of control elements - like dialog box, toolbar - is given in Chapter 4.2.2, "Control elements on the
touchscreen", on page 48.
Operating the instrument
Touchscreen display
Figure 4-1: Display information
1 = Diagram
2 = Layout
3 = Trigger position
4 = Toolbar
5 = Grid
6 = Trigger, horizontal and acquisition label
7 = Info
8 = Trigger level
9 = Menu
10 = Signal bar with signal activators (10a), and active waveforms (10b)
11 = Channel markers indicate the ground levels
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Diagram
A diagram shows one or more waveforms: channel, reference, and math waveforms.
Zoom details, spectrum and other special waveforms are shown in separate diagrams.
To arrange the diagrams on the screen, the Rohde & Schwarz SmartGrid function
helps you to find the target place simply and quickly. For details, see Chapter 4.5,
"Rohde & Schwarz SmartGrid", on page 52. You can also adjust the diagram size by
dragging the diagram border.
Layout
A layout shows a set of diagrams and result tables. You can configure up to four layouts using the SmartGrid functionality. For details, see Chapter 4.5, "Rohde & Schwarz
SmartGrid", on page 52.
Grid
The grid shows the vertical and horizontal divisions. The division lines are labeled with
the correspondent values. The grid labels have the color of the waveform to which they
belong. If several waveforms are shown in one diagram, the grid has the color of the
selected waveform.
Operating the instrument
Touchscreen display
Trigger position and trigger level
The blue markers show the horizontal position of the trigger and the vertical trigger
level. You can touch and move the trigger markers in the diagram to set the positions.
The trigger point is the zero point of the diagram.
The trigger position can be moved outside the diagram.
Trigger, Horizontal, Acquisition
The "Trigger", "Horizontal" and "Acquisition" labels show the main timebase and trigger
settings. If you tap a label, the relevant dialog box opens.
Figure 4-2: Trigger label on the toolbar
1 = Trigger source
2 = Trigger type
3 = Trigger level
4 = Trigger mode
5 = Trigger state
6 = Trigger type specific settings
7 = Trigger slope
Figure 4-3: Horizontal label on the toolbar
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1 = Time scale
2 = Horizontal position
Figure 4-4: Acquisition label on the toolbar
1 = Sample rate
2 = Record length
3 = Acquisition mode
4 = Number of acquired waveforms
5 = Resolution
Info
The "Info" button on the toolbar points to the status messages of the instrument. To
open the message box, tap the button. See also: Chapter 4.10, "Instrument information
and notifications", on page 61.
Operating the instrument
Touchscreen display
Signal bar
The signal bar is the control center for all waveforms. All enabled waveforms are
shown on the left side of the signal bar. On the right side of the signal bar, you see the
signal activators of inactive waveforms. Tap a signal activator to enable the waveform.
Each waveform is represented by a signal icon. If the waveform is shown in a diagram,
the signal icon displays its main vertical and probe settings. If you tap a signal icon, the
dialog with vertical settings for this waveform opens. If you tap the "Minimize" icon on
the signal icon, the waveform switches from the diagram area to the signal icon: the
icon is greyed out. See Chapter 4.4, "Working with waveforms", on page 50 for a
detailed description.
In Figure 4-1, the signal icons C1, C2 and C3 show the main settings, and the waveforms are displayed in diagrams.
Figure 4-5: Signal label
1 = Vertical scale
2 = Offset
3 = Bandwidth
4 = Coupling and termination
If many waveforms are active, then waveforms of the same type are grouped in one
signal icon. Tap the group icon to open the individual signal icons.
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4.2.2 Control elements on the touchscreen
The touchscreen provides everything that you need to control the instrument, to analyze waveforms, and to get measurement results. Figure 4-6 shows the control elements at a glance.
Operating the instrument
Touchscreen display
Figure 4-6: Control elements on the touchscreen
1 = Toolbar
2 = Tab in a dialog box
3 = Dialog box
4 = Result table
5 = Signal bar
6 = Menu
Toolbar (1)
The icons on the toolbar provide quick and easy access to the most important functionality. For a detailed description, refer to Chapter 4.6, "Toolbar", on page 54.
If you adjust the settings of an analyzing function, e.g., cursor measurement, the overlay menu is shown instead of the icons. The overlay menu provides the most important
settings of the current action. If you need more settings, "Setup" opens the corresponding dialog box.
Dialog box (2, 3)
The tabs of the dialog boxes contain all task-oriented settings and operations, and buttons for calling related tabs. The usage of dialog boxes is described in Chapter 4.8,
"Using dialog boxes", on page 58.
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Result table (4)
If you perform cursor or automatic measurements, the result table shows the results of
the action below the diagrams. You can move the result tables to the left or right of the
diagrams.
See also: Chapter 4.7, "Displaying results", on page 57.
Signal bar (5)
The signal bar summarizes all waveforms as described in "Signal bar" on page 47.
Menu (6)
The menu provides access to the complete functionality of the R&S MXO 4.
At the top of the menu, you can find a search box for a quick access to any parameter
you need. A list of all found results is shown on the left side of the menu. Tap the result
entry and the dialog containing this parameter opens.
Operating the instrument
Touchscreen display
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4.3 Applications
The "Apps" dialog provides fast access to all available applications, for example, to
serial protocols or frequency response analysis.
► To open the "Apps" dialog:
● Open "Menu" > "Apps".
●
Press the
[Apps] key on the front panel.
Operating the instrument
Working with waveforms
4.4 Working with waveforms
The R&S MXO 4 can create and display many waveform types. The most important
are:
●
Channel waveforms:
For each input channel, one channel waveform is shown.
●
Reference waveforms:
Four waveforms can be used as reference for comparison and analysis.
●
Math waveforms:
Five mathematic waveforms can be created with mathematic operations performed
on channel, reference, and other math waveforms.
●
Zoom waveforms:
Show the details of waveforms.
●
Digital waveforms:
The Mixed Signal Option R&S MXO4-B1 provides 16 digital channels grouped in
two logic probes (pods) with 8 channels each.
Waveform handling
The R&S MXO 4 can show and analyze many waveforms. To handle this multitude
while keeping track of it, the R&S MXO 4 provides intelligent support:
●
The color system helps to distinguish the waveforms. The color of the vertical
rotary knobs indicates the signal that is focused (selected). The color of each
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●
Waveform states
Depending on its place on the screen and the effect of settings, a waveform has one of
the following states:
●
●
●
●
Operating the instrument
Working with waveforms
waveform can be changed, the color of its signal icon and of the illuminated keys is
adjusted to the new color. Alternatively, a color table can be assigned to a waveform.
Settings: "Menu" > "Settings" > "Appearance" > "Colors" tab.
You can arrange the waveforms in one diagram, or in separate diagrams. The
Rohde & Schwarz SmartGrid function helps to arrange the waveforms.
Off
Active:
The waveform is shown in a diagram
Selected:
One of the active waveforms that has the focus. In each diagram, one of the
assigned waveforms is selected – it appears "on top" in the diagram, and the grid
labels have the color of the selected waveform.
The vertical [Position] and the [Scale] knobs are illuminated with the color of the
selected waveform.
Minimized:
The waveform signal icon is greyed out, and the waveform is removed from the
diagram.
To switch a waveform on
A channel waveform is activated when you connect the probe. You can switch it on and
off according to your needs.
► Choose one of the following ways:
● Press the channel key.
● In the "Vertical" dialog box, select the channel. Tap "Show channel" > "On".
The waveform is now active, selected, and is shown in the diagram.
Remote command: CHANnel<ch>:STATe on page 380
To select a waveform
► Choose one of the following ways:
● Tap the waveform in the waveform diagram.
● Tap the signal icon.
● To select a channel, reference, or math waveform, press the corresponding
key.
Note: Zoom waveforms in zoom diagrams cannot be selected.
To minimize a waveform
► Tap the "Minimize" icon in the upper right corner of the waveform's signal icon in
the signal bar.
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To arrange a waveform using the SmartGrid
See Chapter 4.5, "Rohde & Schwarz SmartGrid", on page 52.
To switch off a waveform
► Do one of the following:
Remote command: CHANnel<ch>:STATe on page 380
Operating the instrument
& Schwarz SmartGrid
Rohde
The waveform disappears from the diagram and the signal icon turns lighter gray.
● Tap the "Delete" icon in the toolbar, and then signal icon of the waveform.
You can also tap the waveform directly. If several waveforms overlap or lie
close together, a selection list is shown.
● To switch off a minimized waveform, tap the "Close" icon in the upper right cor-
ner of the signal icon.
● If the waveform is an input channel:
– Disable "Show channel" in the "Vertical" > "Setup" tab.
– Select the channel. Then press its channel key twice.
4.5 Rohde & Schwarz SmartGrid
The Rohde & Schwarz SmartGrid helps to create and arrange the diagrams on the
screen with drag&drop. The diagram layout depends on the position where you drop
the signal icon, in relation to an existing diagram.
Figure 4-7: SmartGrid positions
1 = In the existing diagram, overlay of signal
2 = New diagram on the left or right
3 = New diagram above or below
The diagram configuration is deleted when you use [Preset] and *RST.
Working with layouts
A SmartGrid configuration of one or more diagrams is called "tab" or "layout". You can
define several layouts and switch between them.
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1 = Tab 1 (layout 1, blue underline indicates that the set is currently displayed)
2 = Tab 2 (layout 2)
3 = Tap to remove a layout
4 = Tap to add a layout
You can add up to four layouts at the upper left corner of the screen:
1.
2. To change the layout name, touch and hold the tab name. The on-screen keyboard
3.
Operating the instrument
Rohde
Tap on the icon next to the layout.
A new layout is created.
opens to enter the new name. Names must be unique.
To remove the layout, tap on the next to the layouts title.
& Schwarz SmartGrid
To arrange a waveform using the SmartGrid
1. Select the layout that you want to rearrange.
2. Drag the signal icon to the diagram area, and move it around.
The Rohde & Schwarz SmartGrid appears and a blue or highlighted area shows
where the waveform will be placed.
3. Drop the waveform in the target area.
The waveform appears in an existing or in a new diagram, and it is selected for further actions.
4. To change the size of a diagram, touch the border between two diagram frames
and drag it to the required position.
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Remote commands: see Chapter 17.7.2, "SmartGrid", on page 364
4.6 Toolbar
The toolbar provides direct access to important control and measurement functions.
By default, the toolbar shows the most frequently used functions. You can configure the
content of the toolbar, see Chapter 4.6.2, "Configuring the toolbar", on page 54.
4.6.1 Using the toolbar
Using the toolbar is easy and straightforward.
Some of the toolbar functions are one-click actions. These actions are performed
immediately when you tap the icon.
Operating the instrument
Toolbar
Other toolbar functions are analyzing functions. These actions are interactive actions.
To use analyzing functions (interactive actions)
1. Tap the icon of the function in the toolbar.
2. Check and adjust the settings in the overlay menu.
3. Select the source waveform if it is needed. For zoom, drag a rectangle, or tap the
diagram to define the zoom area.
4.
If the overlay menu does not close automatically, tap the
4.6.2 Configuring the toolbar
You can configure the content of the toolbar so that only the required functions are displayed. Furthermore, date and time can be hidden. The toolbar configuration is part of
the user preferences. It is retained when you switch off and on the instrument, and you
can save it in the user preferences and user-defined preset.
1. To open the toolbar configuration, tap the icon in the toolbar:
icon.
2. Select the required toolbar functions:
a) In the "Show/Hide tools" section, disable all functions that you do not need.
b) In the "Show/Hide tools" section, enable the functions that you want to add to
the toolbar.
You can select up to 10 tools.
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A detailed description of the toolbar functions is given in Chapter 4.6.3, "Toolbar func-
tions", on page 55.
4.6.3 Toolbar functions
This section describes all toolbar functions in detail.
Operating the instrument
Toolbar
c) In the "Drag to rearrange tools" section, move the icons to arrange them as
required.
You can configure the content of the toolbar, see Chapter 4.6.2, "Configuring the tool-
bar", on page 54.
The following list describes at first the default toolbar functions and then the additional
functions.
Undo
Undoes the last setting actions step by step. Some actions cannot be revoked: locking
the touchscreen with [Touch Lock], and saving data.
Redo
Recovers the undo steps in reverse order.
Help
Enables the context help display. The help window opens when you tap a parameter.
See also: "To display the context help" on page 62.
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Recall
Opens a window to select and load instrument settings that were previously stored in a
saveset.
Save Setup
Saves the current instrument settings in a saveset.
You can reload the saveset using the "Recall" toolbar icon, or using "Menu" >"Save/
Recall" > "Recall" tab > "Saveset".
The filename is created according to the autonaming pattern, defined in "Menu" > "Settings" > "Save / Recall" > "Autonaming" tab.
Screen Capture
Saves a screenshot of the current display using the settings defined in "Menu" >"Save/
Recall" > "Save" tab > "Screenshot".
Annotate
Displays drawing tools for marking areas on the diagram, and for adding text. You can
also select the color.
See also: Chapter 4.12, "Adding annotations", on page 63.
Operating the instrument
Toolbar
Clear
Deletes all measurement results including all waveforms and statistics.
Autoset and Preset
Performs an autoset, or a preset to a default state. The icons have the same functionality as the corresponding keys on the front panel. They are useful when you operate
the instrument remotely.
Run/Stop and Run Single
Starts and stops the continuous acquisition, or starts a defined number of acquisition
cycles. The icons have the same functionality as the corresponding keys on the front
panel. They are useful when you operate the instrument remotely.
Force Trigger
Starts an immediate single acquisition. If the acquisition is running in normal mode and
no valid trigger occurs, use "Force Trigger" to confirm that a signal is available. Then
you can use the displayed waveform to determine how to trigger on it.
Add Zoom
Adds a zoom diagram, an area of the acquired waveform which is visually enlarged.
Click on a diagram to create a zoom or draw a rectangle to define the range of the
zoom.
Add Cursor
Adds a cursor set. Select the cursor type and the source to be measured.
See also: Chapter 9.1, "Cursor measurements", on page 184.
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Measure
Adds one or more measurements to the waveform.
Tap the icon, and select the category and the measurements in the overlay menu.
Select the waveform to be measured, and close the overlay menu.
Edit Spectrum
Edit the existing spectrum settings in the overlay menu.
Delete
Removes waveforms, diagrams and zooms from the display.
Tap the "Delete" icon. A recycle bin icon marks all objects that can be deleted. Tap this
icon to remove an object. Tap the "Delete" icon again to disable the function.
4.7 Displaying results
The results of measurements, protocol decoding and others are displayed immediately.
Operating the instrument
Displaying results
The font size can be adjusted.
To arrange the results on the display
1. Touch and hold the "....." field on top of the results table.
2. Drag on the screen. The SmartGrid indicates where the result table can be placed.
Drop the box on one of the buttons. The results are shown at the left the right, or
below the diagrams.
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To open the corresponding settings
► Double-tap one of the result values.
To adjust the font size of results
1. Open the "Menu" > "Settings" > "Appearance" dialog.
2. Select the "Dialogs" tab.
3. Set the "Result dialog" > "Font size".
4.8 Using dialog boxes
All functionality is provided in dialog boxes as known from computer programs. You
can control the instrument intuitively with the touchscreen. This section provides an
overview of the accessing methods and describes how to use the dialog boxes.
Operating the instrument
Using dialog boxes
The corresponding dialog opens.
Each dialog box has three icons in the upper right corner:
Closes the dialog box
Opens the help window for the dialog
Shift sideways to change the transparency of the dialog box
For direct access to important control and measurement functions, use the toolbar, see
Chapter 4.6, "Toolbar", on page 54.
To open a dialog box
► Perform one of the following actions:
● Open the "Menu", and select the menu entry.
● Press the function key on the front panel.
●
Double-tap a result icon, or tap the icon in a result box to open the corresponding dialog box.
● To open the "Vertical" dialog box of a waveform, tap the signal icon.
● Tap the "Horizontal", "Acquisition" or "Trigger" label to open the corresponding
dialog box.
To close a dialog box
► Tap the "Close" icon in the upper right corner.
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4.9 Entering data
To set parameter values and enter other data, you use the various knobs and the onscreen keypad or keyboard.
Using scale, position and level knobs
The instrument has dedicated rotary knobs to set vertical and horizontal positions and
scale, and the trigger level.
1. Turn the knob to change the value.
2. Press the knob:
To enter values with the on-screen keypad
For data input in dialog boxes, the touchscreen provides an on-screen keypad to enter
numeric values and units. For text input, the on-screen keyboard with English key layout is used.
Operating the instrument
Entering data
● [Scale]: to toggle the increment.
● [Position]: to set to zero.
● [Level]: to set the trigger level to 50% of the signal.
1. Double-tap the entry field. The on-screen keypad opens.
2. Enter the numeric value using the following methods:
● To use the default value, tap "Reset" (if available).
● To get the value that was used before the keypad was displayed, tap "CE".
● To use the minimum or maximum value, tap "Min" or "Max", respectively.
● To increase the displayed value in fixed steps, tap "Inc".
To decrease the value in fixed steps, tap "Dec".
● To enter a user-defined value, tap the numbers and complete the entry by tap-
ping the unit button.
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– "±" changes the sign of the value.
●
To calculate a value, tap the calculator
Use the displayed fields to calculate your values.
Operating the instrument
Entering data
to display the arithmetic operators.
3.
Tap to complete the entry.
To enable the on-screen keyboard
1. Tap "Menu".
2. Tap on "Keyboard" to enable the on-screen keyboard.
If the on-screen keyboard is enabled, the keyboard icon is colored blue. If it is disabled, the color is white.
To enter data with the on-screen keyboard
1. Double-tap the entry field to open the on-screen keyboard.
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2. Enter the text as you would on a normal keyboard.
3.
Operating the instrument
Instrument information and notifications
●
To change the language, tap . The current language is shown on the blank
key.
●
To display numbers and signs, tap .
Tap to complete the entry or to minimize the keyboard.
4.10 Instrument information and notifications
In the upper right corner of the screen, you see the Rohde & Schwarz logo, date and
time, the symbolic information on LAN connection and the notifications status.
► To see the instrument information, tap the Rohde & Schwarz logo.
► To hide the date and time or change the display format, tap on the date/time dis-
play.
Notifications are status messages, information on mismatching settings and similar
information. They are displayed for a few seconds and saved.
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The color of the dot before the text indicates the severity: gray for information, orange
for warnings, and red for errors.
► To read the notifications, tap "Notification".
Operating the instrument
Getting information and help
You can save or delete the list of notifications.
4.11 Getting information and help
If you need information on the instrument's functionality, you can use the instrument
help. It provides contextual information on a setting or dialog. If the help window is
open, you can browse and search for further information using links, table of contents,
and search.
4.11.1 Displaying help
To display the context help
1. Enable the "Help" icon on the toolbar.
2. Tap the parameter for which you need information.
The "Help" window opens and displays the comprehensive description and the corresponding remote command. You can browse the help for further information.
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To open a dialog help
1. Open a dialog.
2.
3. Tap a subtab or menu item.
4.11.2 Using help
You can find a specific information and navigate the contents by following means:
●
●
●
Operating the instrument
Adding annotations
Tap the "Help" icon on the right side of the dialog header.
The help window opens with the dialog help page, where you can select the topics.
Table of contents
Buttons in the help window title:
– "Home": Go to the start page
– "Back", "Forward": Browse the pages that you visited before
Search with filter:
– Enter the word to be found, or a phrase in quotes.
– Tap the filter icon and select the information type.
4.12 Adding annotations
The R&S MXO 4 provides an easy way to add annotations to the screen. With the toolbar "Annotate" you can add text, forms or even draw.
To add an annotation
1. On the toolbar, tap on the "Annotate" icon.
The annotation overlay menu opens.
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2. Tap "Color selections" and select the color that you want to use for your annota-
3. Add one or more of the following:
Operating the instrument
Adding annotations
tions.
● One of the predefined forms: "Arrow" or "Rectangle"
● "Text": adds a text element to the screen and opens on-screen keyboard. You
can change the text later, by tapping on an existing annotation and typing in the
new text.
● "Draw": you can draw any form on the screen.
4. To move one of the annotations, tap on it and drag it to the required position.
To remove an annotation
1. In the "Annotate" overlay menu, tap on "Remove".
2. Tap on any existing "Arrow", "Rectangle" or "Text" annotation to remove it.
3. The "Remove" function, acts as an eraser on drawings: it enables you to erase only
certain parts of your drawing. Drag your finger over any part of your drawing to
erase it.
4. To remove all annotations from the screen, tap on "Remove All".
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5 Instrument setup
Access: "Menu" > "Settings".
In the "Settings" dialog, you can adapt various instrument settings to your requirements, such as language, display appearance, and assign functions to some keys.
Instrument setup
System settings
The following settings and procedures are described in the current section:
● System settings.......................................................................................................65
● Option settings........................................................................................................ 71
● Appearance settings............................................................................................... 72
● Display settings.......................................................................................................79
● Front panel settings.................................................................................................82
● Preset setup............................................................................................................83
● Maintenance settings.............................................................................................. 87
● Save / recall............................................................................................................ 90
5.1 System settings
In the "Settings" > "System" dialog box, you find all instrument, firmware and networkrelated information. Here you can also set the language that is used in the dialogs.
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5.1.1 About settings
Access: "Menu" > "Settings" > "System" > "About".
Instrument setup
System settings
Instrument
Displays general information about the instrument, including:
●
"Material number"
●
"Serial number"
●
"Device ID"
●
"Firmware version"
FW Update
Opens the "FW Update" dialog box. See Chapter 5.7.1, "Firmware update",
on page 87.
Open Source Acknowledgment
Displays the "Open Source Acknowledgment" document.
5.1.2 Network settings
Access: "Menu" > "Settings" > "System" > "Network".
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Instrument setup
System settings
Device name
Indicates the currently defined device name. This value is required to configure the
instrument for work in a network.
NOTICE! Risk of network problems. Incorrect configuration of the device name can
create network problems. Consult your network administrator before changing the
name.
Remote command:
DIAGnostic:SERVice:COMPutername on page 362
Automatic IP (DHCP)
If enabled, the IP address of the oscilloscope is obtained automatically.
IP address
Shows the current IP address of the instrument. If "Automatic IP (DHCP)" is "Off", you
can change the IP address here. For complete manual configuration, select
"Advanced". See also: Chapter 16.1, "Connecting the instrument to the network
(LAN)", on page 333.
Web lfc Password
Password for LAN configuration. The default password is LxiWebIfc.
LAN Reset
Resets the LAN configuration to its default settings using the network configuration
reset mechanism (LCI) for the instrument.
The LAN settings are configured in the "Advanced" dialog, or using the instrument's
web browser (see Chapter 16.2, "Web interface", on page 335).
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Advanced
Opens a dialog box to configure the network connection.
Instrument setup
System settings
You need these settings to configure the LAN connection manually, without DHCP.
NOTICE! Connection errors can affect the entire network. You must assign valid
address information before connecting the instrument to the LAN. Contact your network administrator to obtain a valid IP address and other connection data.
See also: Chapter 16.1, "Connecting the instrument to the network (LAN)",
on page 333.
5.1.3 Remote settings
Access: "Menu" > "Settings" > "System" > "Remote".
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The following settings are required for remote control of the instrument via a connected
computer.
Instrument setup
System settings
Transfer data format
Selects the data format that is used for transmission of waveform data from the instrument to the controlling computer.
Waveform data can be retrieved using the following commands:
●
DIGital<m>:DATA[:VALues]
"Ascii"
"FLOAT"
"DOUBLE"
"INT8/16/32"
Remote command:
FORMat[:DATA] on page 360
Bitpattern format
Sets the format for all bit pattern queries.
Remote command:
FORMat:BPATtern on page 361
Data values are returned in ASCII format as a list of comma-separated values in floating point format.
Binary format. Up to 7 significant digits are stored. If there are more
than 7 digits, the number is rounded off.
Binary format. Up to 15 significant digits of the numbers are stored.
Signed integer data with length 8/16/ 32 bit.
5.1.4 Localization settings
Access: "Menu" > "Settings" > "System" > "Localization".
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Language
Selects the language in which the dialog boxes, result boxes and other screen information is displayed. You can change the instrument language while the instrument is running.
Available languages are, for example, English, German, French, Japanese. For a complete list of supported languages, refer to the data sheet.
Instrument setup
System settings
5.1.5 Date and time settings
Access: "Menu" > "Settings" > "System" > "Date/Time".
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Date and time
Adjust the date and time of the instrument.
Remote command:
SYSTem:DATE on page 363
SYSTem:TIME on page 363
5.2 Option settings
Additional options for the R&S MXO 4 are enabled using a license key. To obtain the
license key, consult your sales representative.
You can obtain registered or unregistered licenses.
Unregistered licenses
Unregistered licenses are not assigned to a particular instrument. The instrument
accepts only registered licenses. If your license is delivered unregistered, use the
online tool R&S License Manager to register the license for your instrument. The registration of a permanent license is irreversible, so ensure that you register it for the correct instrument. The address of the tool is https://extranet.rohde-schwarz.com/service.
For registration, you need the device ID of the instrument on which the option will be
installed.
Instrument setup
Option settings
5.2.1 Software options settings
Access: "Settings" > "Options" > "Software"
In this dialog, you can access settings for installing and deactivating options. In the
"Detailed Info" dialog, you can get an overview of all options installed on your
R&S MXO 4.
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5.2.1.1 Install options
Access: "Settings" > "Options" > "Software" > "Install"
In the "Install" tab, you can install new options or deactivate existing options using
license keys.
Instrument setup
Appearance settings
Enter new option key
Enter the license key here to activate the option. For license keys delivered as a file,
use "Install from file" on page 72.
Install from file
If you got a license file, install the license here.
Tap "Open" to open the file selection dialog, or enter the complete path and filename.
5.3 Appearance settings
In the "Settings" > "Appearance" dialog box, you define the look and feel of the display
element, e.g. waveform colors, result position, or grid behavior.
5.3.1 Colors
Access: "Settings" > "Appearance" > "Colors"
By default, various colors are assigned to the different waveform types for better visibility and distinguishability. You can change the color assignment and select another
color or a color table to waveforms.
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Color source
Selects the waveform to which the color or the color table is assigned.
Instrument setup
Appearance settings
Use color table
If enabled, the selected waveform is displayed according to its assigned color table.
If disabled, the selected color is displayed, and the intensity of the signal color varies
according to the cumulative occurrence of the values.
Remote command:
DISPlay:COLor:SIGNal:USE on page 370
Assigned color table
Assigns a color table to the source waveform instead of a dedicated color. Color tables
define the color of the waveform pixels depending on the cumulative occurrence of the
associated values.
The following color tables are provided:
●
"False colors": color changes gradually in a wide color spectrum.
●
"Single Event": single events and very seldom events appear yellow, a higher
cumulative occurrence is shown with blue color. This view helps to identify specific
events.
●
"Spectrum": colors display the wave lengths of the light. Low cumulative occurrence is displayed blue like high wave length.
●
"Temperature": color changes gradually from blue (low temperature) to red (high
temperature) with increasing cumulative occurrence.
Remote command:
DISPlay:COLor:SIGNal:ASSign on page 370
Color
Shows the current color of the selected waveform. To change the color, tap the button
to open the "Color" dialog.
In the dialog, you can pick from a list of basic colors, or define a color with the color
picker.
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Instrument setup
Appearance settings
The color of the waveform, its signal icon, channel icon, and of the illuminated keys is
adjusted to the new color.
Remote command:
DISPlay:COLor:SIGNal:COLor on page 369
Set to default color
Resets the color of the selected waveform to the factory default.
5.3.2 Grid
Access: "Settings" > "Appearance" > "Grid"
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Instrument setup
Appearance settings
Show grid
If selected, a grid is displayed in the diagram area. A grid helps you associate a specific data point to its exact value on the x- or y-axis.
Remote command:
DISPlay:DIAGram:GRID on page 371
Show labels
If selected, labels mark values on the x- and y-axes in specified intervals in the diagram.
Remote command:
DISPlay:DIAGram:LABels on page 371
Show fine grid scale
If selected, the crosshair is displayed as a ruler with scale markers. If disabled, the
crosshair is shown as dashed lines.
Remote command:
DISPlay:DIAGram:FINegrid on page 371
Show crosshair
If selected, a crosshair is displayed in the diagram area. A crosshair allows you to
select a specific data point by its co-ordinates.
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Remote command:
DISPlay:DIAGram:CROSshair on page 370
Keep X-grid fixed
If enabled, the vertical grid lines remain in their position when the horizontal position is
changed. Only the values at the grid lines are adapted.
Keep Y-grid fixed
If enabled, the horizontal grid lines remain in their position when the position of the
curve is changed. Only the values at the grid lines are adapted.
Fixed horizontal grid lines correspond to the behavior of traditional oscilloscopes.
Remote command:
DISPlay:DIAGram:YFIXed on page 371
Show div label (x)
If selected, the time scale value is shown at the diagram bottom instead of the horizontal grid labels. For example, 10 ns/div is shown instead of the values 0, 10, 20, 30... ns.
Instrument setup
Appearance settings
5.3.3 Dialogs
Access: "Settings" > "Appearance" > "Dialogs"
Font size (Dialog)
Defines the font size of the text in dialog boxes.
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Transparency (Dialog)
Defines the transparency of the dialog box background. For high transparency values,
you can see the waveform display in the background, and possibly check the effect of
the changed setting. For lower transparency values, readability in the dialog box
improves.
You can also set the dialog transparency, by moving the transparency bar at the top of
the dialog.
Font size (Result dialog)
Defines the font size of the text in result tables.
5.3.4 Measure
Access: "Settings" > "Appearance" > "Measurements"
Instrument setup
Appearance settings
Show statistic columns
Select the statistical values that you want to see in the results table.
You can display the following values:
●
"Current"
●
"Max"
●
"Min"
●
"Mean"
●
"RMS"
●
"S-dev"
●
"Event count"
●
"Wave count"
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5.3.5 Peak list
Access: "Settings" > "Appearance" > "Peak list"
Instrument setup
Appearance settings
Peak list settings apply to peak list measurements. They are visible when the peak list
for spectrum measurements is enabled.
Frame type
Defines the layout of the labels, full border or none.
Remote command:
CALCulate:SPECtrum<sp>:PLISt:LABel:BORDer on page 372
5.3.6 Miscellaneous
Access: "Settings" > "Appearance" > "Misc"
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Instrument setup
Display settings
Clock style
Select how the clock in the upper right corner of the screen is displayed:
●
"Show seconds": format is hh:mm:ss
●
"Hide seconds": format is hh:mm
●
"Hide clock": no time is shown
5.4 Display settings
In the "Settings" > "Display" dialog, you can define the display settings like brightness
and signal intensity.
5.4.1 Persistence settings
Access: "Menu" > "Settings" > "Display" > "Persistence".
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Enable
If enabled, each new data point in the diagram area remains on the screen for the
duration that is defined using Time, or as long as Infinite persistence is enabled.
If disabled, the waveform points are displayed only for the current acquisition.
Remote command:
DISPlay:PERSistence[:STATe] on page 373
Instrument setup
Display settings
Infinite persistence
If infinite persistence is enabled, each new waveform point remains on the screen until
this option is disabled. Use infinite persistence to display rare events in the signal.
Remote command:
DISPlay:PERSistence:INFinite on page 372
Time
Sets a time factor that controls how long the waveforms points fade away from the display. Thus, the R&S MXO 4 emulates the persistence of analog phosphor screens.
Remote command:
DISPlay:PERSistence:TIME on page 373
Reset
Resets the display, removing persistent all waveform points.
Remote command:
DISPlay:PERSistence:RESet on page 372
5.4.2 Signal settings
Access: "Menu" > "Settings" > "Display" > "Signal".
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Intensity
The intensity determines the strength of the waveform line in the diagram. Enter a percentage between 0 (not visible) and 100% (strong). The default value is 50%.
You can also use the [Intensity] knob to adjust the waveform intensity directly.
Remote command:
DISPlay:INTensity on page 373
Instrument setup
Display settings
Waveform style
Selects the style in which the waveform is displayed.
"Vectors"
"Dots"
Remote command:
DISPlay:DIAGram:STYLe on page 374
The individual waveform points are connected by a line.
Define the strength of the line using the [Intensity] knob.
Only the individual waveform points are displayed.
To see the dots of one waveform, perform one acquisition with
[Single] and N=1 (N-single/Avg count). During continuous acquisition,
or a [Single] acquisition with N > 1, the dots of multiple subsequent
waveforms are displayed on the screen, and the waveform looks like
a line.
5.4.3 Backlight settings
Access: "Menu" > "Settings" > "Display" > "Backlight".
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Brightness
Changes the background luminosity of the touchscreen.
5.5 Front panel settings
In the "Front panel" dialog box, you can assign functions to keys and knobs and adjust
the brightness of the keys.
5.5.1 Hardkeys: function assignment
Access: "Settings" > "Front panel" > "Hardkeys"
Instrument setup
Front panel settings
Camera hardkey action
The Camera key on the bottom right is a shortcut key that initiates an associated
action.
You can assign one of the following actions:
●
Save screenshot
●
Open screenshot setup
Configure the settings for the selected action.
●
Screenshots: "Save/Recall" key > "Save" tab > "Screenshot", see Chapter 12.4,
"Screenshots", on page 246.
User hardkey action
The [User] key below the spectrum keys is a shortcut key that initiates an associated
action.
You can assign one of the following actions:
●
Force trigger
●
Save saveset
●
Recall saveset
For details of saveset configuration, see Chapter 12.1, "Save and recall user settings",
on page 234.
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5.5.2 Knobs
Access: "Settings" > "Front panel" > "Knobs"
Vertical.......................................................................................................................... 83
Vertical
The vertical Position knob can change the waveform position or the offset of the
selected waveform. Select the action that you want to perform.
See also: "[Position]" on page 37.
Instrument setup
Preset setup
5.5.3 LED
Access: "Settings" > "Front panel" > "LED".
Brightness
Defines the luminosity of illuminated front panel keys and knobs.
5.6 Preset setup
The preset sets the instrument to a default configuration, or to a user-defined configuration. A user-defined preset file is one of the saveset files, which are stored on the
instrument. It contains the instrument setup including display settings, except for trans-
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parency and intensity. You can save the current configuration to a preset file, and
enable saved preset file to be applied with the [Preset] key.
See also: Chapter 12.1, "Save and recall user settings", on page 234.
5.6.1 Preset settings
Access: "Menu" > "Settings" > "Preset" > "Settings".
Instrument setup
Preset setup
Preset
Set the instrument to a default configuration, or to a user-defined configuration.
Enable user-defined preset
If enabled, the settings from the selected saveset are restored when the [Preset] key is
pressed.
If disabled, [Preset] sets the instrument to the factory defaults.
Saveset to be loaded on preset
Select the saveset file that contains the required settings. If "Enable user-defined preset" is enabled, this saveset is loaded when you press the [Preset] key.
"Preset file
name"
Enter the filename of the preset file. This file will be loaded on userdefined preset. The filename is also used when you save a preset file
with "Preset file name".
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Instrument setup
Preset setup
"File extension"
<Directory>
Save as, Save preset file
"Save as" opens the file selection dialog, where you can select the directory and enter
the filename of the preset file. "Save preset file" saves the current settings immediately
to the file that is named in "Preset file name" in the current dirctory.
5.6.2 Factory preset
Access: "Menu" > "Settings" > "Preset" > "Factory".
The file extension is .set.
Shows the currently used directory. To change the directory, tap the
button and select the correct directory in the file dialog.
Factory Preset
Resets the instrument to the factory default settings, to the initial state. Factory settings
comprise all instrument settings, including display, intensity and transparency settings.
After loading factory defaults, perform a self-alignment to synchronize the signal data,
see Chapter 5.7.2, "Alignment", on page 87.
5.6.3 Secure erase
Access: "Menu" > "Settings" > "Preset" > "Secure Erase"
To purge all non-volatile memory, a special delete function is available. This function
erases all user data, including instrument setups and reference waveforms. Calibration
data is retained on the instrument. The instrument reboots after erasing the data.
The procedure is required if user data must not leave the test area with the instrument,
e.g. when working in highly secured environments.
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5.6.4 Restoring settings
When you have changed many settings on the instrument, and you are not sure which
settings are causing which effect, you can restore the default settings and start anew.
The following methods are available:
Instrument setup
Preset setup
●
Saving instrument settings as a user-defined preset and restoring the instrument
settings to user-defined default values
●
Restoring all settings on the R&S MXO 4 to the factory-defined values
●
Restoring settings from a file
To save a user-defined preset
1. Open the "Menu" > "Settings" > "Preset" tab.
2. Enter a name for the preset file. Select the file format.
3. Tap "Save preset file".
Note: If you want to store the file in another directory than the displayed one,
select "Save as". See also: Chapter 12.5, "File selection dialog", on page 249.
To restore the instrument settings to user-defined default values
1. Open the "Menu" > "Settings" > "Preset" > "Settings" tab.
2. In "Preset file name", enter the name of the file that contains the required settings.
3. To use these settings as preset values, select "Enable user-defined preset".
4. Press the [Preset] key.
To restore all settings to the factory defaults
1. Open the "Menu" > "Settings" > "Preset" > "Factory" tab.
2. Tap the "Factory Preset" button.
All settings on the R&S MXO 4 are reset to their factory-defined values.
As long as no user-defined preset file is loaded and "Enable user-defined preset" is
disabled, the [Preset] key also resets the instrument settings to factory defaults.
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5.7 Maintenance settings
In the "Settings" > "Maintenance" dialog box, you can update the firmware, perform
self-alignment.
5.7.1 Firmware update
Access: "Menu" > "Settings" >"Maintenance" > "FW Update".
Your instrument is delivered with the latest firmware version. Firmware updates are
provided on the internet at:
www.rohde-schwarz.com/firmware/mxo4.
The "Release Notes" describe the improvements and modifications of all firmware versions. They also explain how to update the firmware. They are available along with the
firmware on the same web page.
Instrument setup
Maintenance settings
5.7.2 Alignment
When data from several input channels is displayed at the same time, it can be necessary to align the data. Alignment is done vertically or horizontally to synchronize the
time bases or amplitudes and positions. Perform an alignment, for example, when
strong temperature changes occur (> 5°).
5.7.2.1 Alignment settings
Access: "Menu" > "Settings" > "Maintenance" > "Alignment"
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Instrument setup
Maintenance settings
Start alignment
Starts the self-alignment procedure for all channels.
Date, Time, Overall alignment state
Show the date, time and the summary result of the self-alignment process: not aligned,
passed or failed. Detailed results are provided on the "Results" tab.
Remote command:
CALibration:DATE? on page 376
CALibration:TIME? on page 376
CALibration:RESult? on page 377
Show results
Opens a dialog to display the alignment results.
For each channel, the results of the individual alignment steps are shown for all technical channel component. In case you require support, you may be asked to provide this
information.
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Instrument setup
Maintenance settings
5.7.2.2 Performing a self-alignment
The self-alignment aligns the data from several input channels vertically and horizontally to synchronize the timebases, amplitudes and positions. The self-alignment process includes a basic hardware check.
Recommendation on performing the self-alignment:
●
When putting the instrument into operation for the first time
●
After a firmware update
●
Once a week
●
When major temperature changes occur (> 5°)
1. Warm up the instrument before you start the self-alignment. The minimum warm-up
time is indicated in the data sheet.
2. Remove the probes from the input connectors.
3. Open "Menu" > "Settings" > "Maintenance".
4. In the "Alignment" tab, tap "Start alignment".
The alignment is performed, the process can take several minutes. A message box
informs you about the running process, wait until this message box closes.
The overall pass/fail result is shown in the "Overall alignment state" field.
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5.7.3 Power management
Access: "Menu" > "Settings" > "Maintenance" > "Power Mgmt."
Auto power up
If enabled, the instrument powers up automatically when it is connected to the mains
voltage.
Remote command:
SYSTem:APUP on page 377
Instrument setup
Save / recall
5.8 Save / recall
5.8.1 Autonaming
Access:"Menu" > "Settings" key > "Save/Recall" > "Autonaming" tab.
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5.8.1.1 Autonaming settings
Instrument setup
Save / recall
In the "Autonaming" tab, you can define the pattern for automatic file name generation.
This name is used as the default file name. The default path is the storage location for
all saved files and their subdirectories.
User text
If enabled, inserts the specified user text after the prefix.
Remote command:
MMEMory:AUTonaming:USERtext on page 375
MMEMory:AUTonaming:TEXT on page 376
Prefix
If enabled, inserts the default prefix in the file name. The prefix indicates the type of
data that is saved, for example, RefCurve, Settings.
Remote command:
MMEMory:AUTonaming:PREFix on page 374
Date/Time
If enabled, the current date and time are inserted in the filename pattern.
Remote command:
MMEMory:AUTonaming:TIME on page 374
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Index
If enabled, inserts an index.
Remote command:
MMEMory:AUTonaming:INDex on page 374
Enable autosave
Enables the automatic saving of the waveform. With "Autosave interval", you can
define the time interval for the automatic saving.
Remote command:
MMEMory:AUSave:ENABle on page 375
MMEMory:AUSave:INTerval on page 375
Default path for all file operations
Defines the path that is displayed in the file selection dialog box for loading and storing
operations. On the instrument, all user data is written to home/storage/userData.
You can create subfolders in this folder.
If a USB flash drive is connected, the path is set automatically to the drive letter of the
USB flash drive.
To switch the directory quickly, double-tap the path button. Use the symbols on the left
of the file explorer box to change the directory.
Remote command:
MMEMory:AUTonaming:DEFaultpath on page 375
Instrument setup
Save / recall
Reset path
Resets the default file path to the factory default.
Remote command:
MMEMory:AUTonaming:RESPath on page 376
MMEMory:AUTonaming:RESall on page 375
5.8.1.2 Defining default file paths and names
When a save or load operation is performed, a default file name and path is provided.
You can configure which path is used and how the file name is generated. In the file
selection dialog box, you can change the folder and name as desired.
To define the default file path
1. Tap "Menu" > "Settings".
2. Select the "Save/Recall" tab.
3. Select the "Autonaming" tab.
4. Double-tap the path button.
The directory selection dialog box is opened.
5. Select the folder in which the data is stored by default. Use the symbols on the left
of the file explorer box to switch to often used directories.
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6. To restore the factory-set default path, tap "Reset" next to the path field.
To define the automatic file name pattern
The automatic file name pattern can consist of the following elements:
<Prefix>_<UserText>_<Date>_<Index>_<Time>
The prefix depends on the data type to be stored and cannot be changed by the user.
The other elements can be enabled or disabled as required.
1. Tap "Menu" > "Settings".
2. Select the "Save/Recall" tab.
3. Select the "Autonaming" tab.
4. If you want to exclude the "Prefix", "Date/Time" or an "Index" (serial number), dis-
Instrument setup
Save / recall
Alternatively, you can tap the "Default path for all file operations" field and type the
path.
able the corresponding option.
5. To insert a user-defined text after the prefix, enable "User text". Enter the text in the
edit field.
The specified elements are used to generate the default file name for the next storage operation.
5.8.2 CSV export
Access:"Menu" > "Settings" key > "Save/Recall" > "CSV export" tab.
In this dialog, you can define the format of your CSV file.
Decimal symbol
Selects if point or comma is used as a decimal symbol in the exported CSV file.
CSV delimiter
Selects the list separator symbol from a list. Available are semicolon, comma, space,
tab and colon.
Remote command:
EXPort:RESult:DELimiter on page 376
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6 Acquisition and waveform setup
6.1 Horizontal setup
The "Horizontal" dialog provides the time base configuration for channel and spectrum
waveforms.
6.1.1 About the horizontal system
Horizontal settings, also known as timebase settings, adjust the waveforms in horizontal direction.
Typically, the trigger is the determining point of the waveform record. In many scenarios, you want to analyze the waveform some time before or after the trigger. To adjust
the horizontal acquisition window to the waveform section of interest, you can use the
following parameters:
●
●
Acquisition and waveform setup
Horizontal setup
The horizontal position defines the time distance of the trigger point (the zero
point of the diagram) to the reference point. Changing the horizontal position, you
can move the trigger point, even outside the screen.
The reference point is the rescaling center of the time scale on the screen. If you
modify the time scale, the reference point remains fixed on the screen, and the
scale is stretched or compressed to both sides of the reference point.
Unlike vertical settings, which are waveform-specific, the horizontal settings apply to all
active waveforms.
Timebase settings are interdependent:
Timebase range = Time scale * Number of divisions
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The number of divisions is 10, which is the only constant parameter.
6.1.2 Horizontal Setup settings
Access: "Menu" > "Horizontal" > "Setup" tab, or tap the "Horizontal" label above the
diagram.
Acquisition and waveform setup
Horizontal setup
Time scale
Sets the horizontal scale, the time per division, for all waveforms in the time domain,
for example, channel and math waveforms.
Increase the scale to see a longer time interval of the waveform. Decrease the scale to
see it in more detail. The scale has a point that remains fixed on the screen when the
scale value is changing: the reference point.
Remote command:
TIMebase:SCALe on page 378
Timebase range
Sets the time of one acquisition, which is the time across the 10 divisions of the diagram: Acquisition time = Time scale * 10 divisions.
Changing the acquisition time changes the time scale, too.
Remote command:
TIMebase:RANGe on page 379
Position
Defines the time distance between the reference point and the trigger point, which is
the zero point of the diagram. The horizontal position is also known as trigger offset.
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If you want to see a section of the waveform some time before or after the trigger, enter
this time as horizontal position. The requested waveform section is shown around the
reference point. Use positive values to see waveform sections after the trigger - the
waveform and the diagram origin move to the left.
Remote command:
TIMebase:HORizontal:POSition on page 379
Reference point
Sets the position of the reference point in % of the screen. It defines which part of the
waveform is shown.
The reference point marks the rescaling center of the time scale on the screen. If you
modify the time scale, the reference point remains fixed on the screen, and the scale is
stretched or compressed to both sides of the reference point. If the "Position" is 0, the
trigger point is on the reference point.
The reference point is not marked in the diagram.
Remote command:
TIMebase:REFerence on page 380
Acquisition and waveform setup
Horizontal setup
6.1.3 Zoom settings
The zoom settings are described in Chapter 8.1, "Zoom", on page 160.
6.1.4 Reference clock
Access: "Menu" > "Horizontal" > "Setup" tab > "Ref Clock"
The oven-controlled crystal oscillator (OCXO) produces a 10 MHz internal reference
signal with precise and stable frequency. You can output this clock signal for synchronization of other instruments. Conversely, you can also use an external 10 MHz reference signal. The input and output connectors for reference signals are on the rear
panel of the instrument.
Use external ref. clock
Enables the use of an external 10 MHz reference signal instead of the internal reference clock.
Remote command:
SENSe[:ROSCillator]:SOURce on page 407
Output 10 MHz ref. signal
Sends the internal reference clock signal to the Ref. Out connector.
If "Use external ref. clock" is enabled, the external reference signal is output instead of
the internal clock.
Remote command:
SENSe[:ROSCillator]:OUTPut[:ENABle] on page 406
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6.2 Acquisition
Access: "Menu" > "Acquisition".
Acquisition settings define the processing of the captured samples in the instrument.
6.2.1 About the acquisition system
Sampling and processing
The A/D converter samples the continuous signal under test at specific points in time
and captures digital values. The converter is working at a constant rate specified in
GHz.
Acquisition and waveform setup
Acquisition
The captured values are processed according to the acquisition settings. The result is
a waveform record that contains waveform samples and is stored in the waveform
memory. The waveform samples are displayed on the screen and build up the waveform.
The number of waveform samples in one waveform record is called record length.
The rate of recording waveform samples - the number of waveform samples per second - is the sample rate. The higher the sample rate, the better the resolution is and
the more details of the waveform are visible.
Sample rate = 1 / Resolution
The sample rate can be the same as the constant rate of the A/D converter, or higher,
or lower. To get a higher sample rate, interpolation is used. Several interpolation methods are available. Other processing methods reduce the sample rate, or build the
resulting waveform from several consecutive acquisitions of the signal. These methods
are called acquisition modes.
Minimum sample rate and aliasing
A sufficient resolution is essential for correct reconstruction of the waveform. If the signal is undersampled, aliasing occurs - a false waveform is displayed. To avoid aliasing
and accurately reconstruct a signal, the sample rate must be at least 3 to 5 times the
fastest frequency component of the signal. A higher sample rate increases signal fidelity, increases the chance to capture glitches and other signal anomalies, and improves
the zoom-in capabilities.
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Interleaving
The R&S MXO 4 achieves its highest sample rate by interleaving two channels: channels 1 and 2 are interleaved, and also channel 3 and 4. Interleaving assumes that only
one of the paired channels can be used - either channel 1 or channel 2, and either
channel 3 or 4. If the second channel of a pair is used (on display, or as trigger source,
math source, or measurement source), the interleaving mode is disabled.
6.2.2 Acquisition Setup settings
Access: "Menu" > "Acquisition" > "Setup" tab.
Acquisition and waveform setup
Acquisition
Figure 6-1: Acquisition settings: automatic sample rate and record length
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Acquisition and waveform setup
Acquisition
Figure 6-2: Acquisition settings: manual sample rate and record length
Run/Stop
Starts and stops the continuous acquisition. The [Run / Stop] key lights green when the
acquisition is running. When the acquisition is stopped, the key lights red.
Remote command:
RUN on page 377
STOP on page 378
Run Single
Starts a defined number of acquisitions. The [Single] key lights green when the acquisition is running. When the acquisition is stopped, the key lights red.
To set the number of acquisitions, set "N-single/Avg count" in the "Acquisition" setup.
Remote command:
SINGle on page 378
SR mode
Defines how the sample rate is set.
"Auto"
Sample rate is determined automatically and changes due to instrument internal adjustments due to other setting changes.
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Acquisition and waveform setup
Acquisition
"Manual"
Remote command:
ACQuire:SRATe:MODE on page 390
RL mode
Selects the mode of the waveform record length adjustment.
"Auto"
"Manual"
Remote command:
ACQuire:POINts:MODE on page 389
Sample rate, Min. sample rate
Sets the number of waveform points per second in manual sample rate mode. In automatic sample rate mode, it sets the minimum value of the sample rate for automatic
calculation.
The sample rate considers the samples of the ADC, and the processing of the captured samples including interpolation.
The setting is relevant, if "SR mode" is set to "Manual".
Remote command:
ACQuire:SRATe[:VALue] on page 390
The sample rate is manually defined with "Sample rate", "Min. sample
rate".
Record length is determined automatically and changes due to instrument internal adjustments due to other setting changes.
The waveform record length is manually defined with "Record length",
"Record length limit".
Record length, Record length limit
Sets the record length in manual record length mode. In automatic record length mode,
it sets the maximum value of the record length for automatic calculation.
The record length is the number of waveform samples that are stored in one waveform
record after processing, including interpolation.
Remote command:
ACQuire:POINts[:VALue] on page 388
N-single/Avg count
The acquisition and average count has several effects:
●
It sets the number of waveforms acquired with [Single].
●
It defines the number of waveforms used to calculate the average waveform.
Thus, the instrument acquires sufficient waveforms to calculate the correct average
if "Average" is enabled for waveform arithmetic. The higher the value is, the better
the noise is reduced.
●
It sets the number of acquisitions to be acquired in a fast segmentation acquisition
series. Thus, you can acquire exactly one fast segmentation acquisition series with
[Single].
Remote command:
ACQuire:COUNt on page 387
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