R&S NRX Series User manual

R&S®NRX
Power Meter
User Manual
User Manual
Version 07
1178556602
(;ÜÅÐ2)

This manual describes the R&S®NRX (1424.7005.02) with firmware version FW 02.31 and later.
In addition to the base unit, the following options are described:
●R&S®NRX-B1 (1424.7805.02)
●R&S®NRX-B4 (1424.8901.02)
●R&S®NRX-B8 (1424.8301.02)
●R&S®NRX-B9 (1424.8601.02)
●R&S®NRX-K2 (1424.9208.02)
●R&S®NRX-K4 (1424.9308.02)
© 2020 Rohde & Schwarz GmbH & Co. KG
Mühldorfstr. 15, 81671 München, Germany
Phone: [phone] - 0
Email: [email protected]
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.
Trade names are trademarks of the owners.
1178.5566.02 | Version 07 | R&S®NRX
Throughout this manual, products from Rohde & Schwarz are indicated without the ® symbol , e.g. R&S®NRX is indicated as
R&S NRX.

Contents
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3User Manual 1178.5566.02 ─ 07
Contents
1 Preface.................................................................................................. 13
1.1 Documentation Overview........................................................................................... 13
1.1.1 Getting Started Manual................................................................................................. 13
1.1.2 User Manual..................................................................................................................13
1.1.3 Tutorials.........................................................................................................................13
1.1.4 Instrument Security Procedures....................................................................................13
1.1.5 Basic Safety Instructions...............................................................................................14
1.1.6 Data Sheets and Brochures.......................................................................................... 14
1.1.7 Release Notes and Open Source Acknowledgment (OSA).......................................... 14
1.2 Key Features................................................................................................................14
2 Safety and Regulatory Information.................................................... 16
2.1 Korea Certification Class B........................................................................................16
3 Getting Started..................................................................................... 17
3.1 Preparing for Use........................................................................................................ 17
3.1.1 Unpacking and Checking.............................................................................................. 17
3.1.1.1 Accessory List............................................................................................................... 17
3.1.2 Operating Conditions.................................................................................................... 17
3.1.3 Considerations for Test Setup....................................................................................... 18
3.1.4 Placing on a Bench Top................................................................................................ 18
3.1.5 Mounting in a Rack....................................................................................................... 19
3.1.6 Connecting to the AC Power Supply.............................................................................19
3.1.7 Switching On or Off....................................................................................................... 20
3.1.8 Connecting Power Sensors...........................................................................................21
3.1.8.1 Sensor Connectors A to D............................................................................................ 21
3.1.8.2 Optional Sensor Interface for R&S NRT (R&S NRX-B9)...............................................22
3.1.8.3 LAN Interface................................................................................................................ 22
3.1.8.4 USB 2.0 Host Interfaces................................................................................................23
3.1.9 Connecting USB and External Devices.........................................................................23
3.2 Instrument Tour...........................................................................................................23
3.2.1 Front Panel Tour............................................................................................................23
3.2.1.1 Sensor Connector A and B........................................................................................... 24

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3.2.1.2 Module Bay................................................................................................................... 24
3.2.1.3 Touchscreen..................................................................................................................25
3.2.1.4 Keys.............................................................................................................................. 25
3.2.1.5 USB Host Interface....................................................................................................... 27
3.2.1.6 On/Standby Key............................................................................................................ 27
3.2.2 Rear Panel Tour............................................................................................................ 28
3.2.2.1 Trig In / Out 2 and Out 1 / Trig Out Connectors............................................................ 28
3.2.2.2 Ethernet Interface..........................................................................................................28
3.2.2.3 USB Device Interface....................................................................................................29
3.2.2.4 USB Host Interface....................................................................................................... 29
3.2.2.5 AC Supply and Power Switch....................................................................................... 29
3.2.2.6 IEC 625/IEEE 488 Interface.......................................................................................... 29
3.2.2.7 Sensor Connectors C and D......................................................................................... 30
4 Operating Concepts.............................................................................31
4.1 Manual Operation........................................................................................................31
4.1.1 Start Dialog................................................................................................................... 31
4.1.2 Main Measurement Dialog............................................................................................ 32
4.1.3 Status Information......................................................................................................... 34
4.1.4 Notification Center.........................................................................................................35
4.1.5 Selecting the Display Layout.........................................................................................36
4.1.6 Swapping Measurement Panes.................................................................................... 38
4.1.7 Editing Parameters........................................................................................................39
4.1.8 Creating and Saving Screenshots.................................................................................40
4.2 Remote Operation....................................................................................................... 40
4.3 Remote Control........................................................................................................... 41
4.3.1 Switching to Remote Control (REMOTE)......................................................................42
4.3.2 Returning to Manual Operation (LOCAL)......................................................................42
5 Measurement Basics........................................................................... 43
5.1 Parallel Measurements............................................................................................... 43
5.2 Sensor Assignment and Memory.............................................................................. 43
5.3 Performing a Measurement........................................................................................45
5.4 Limit Violation..............................................................................................................46
5.5 Settings Conflict..........................................................................................................47

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6 Configuration for All Measurement Types.........................................49
6.1 Display Settings.......................................................................................................... 49
6.2 Controlling the Measurement.................................................................................... 58
6.2.1 Controlling the Measurement Results........................................................................... 59
6.3 Triggering.....................................................................................................................59
6.3.1 Trigger States................................................................................................................59
6.3.2 Trigger Sources.............................................................................................................60
6.3.3 Dropout Time.................................................................................................................61
6.3.4 Hold-Off Time................................................................................................................ 61
6.3.5 Trigger Settings.............................................................................................................62
6.4 Measurement Settings Dialog....................................................................................66
7 Measurement Types and Result Displays..........................................70
7.1 Continuous Average................................................................................................... 70
7.1.1 Continuous Average Result Display..............................................................................70
7.1.2 Continuous Average Settings........................................................................................71
7.2 Burst Average..............................................................................................................72
7.2.1 Burst Average Result Display........................................................................................73
7.2.2 Burst Average Settings..................................................................................................73
7.3 Trace.............................................................................................................................74
7.3.1 Trace Result Display..................................................................................................... 74
7.3.2 Trace Settings............................................................................................................... 75
7.3.3 Trace Marker Dialog......................................................................................................76
7.4 Pulse Analysis.............................................................................................................79
7.4.1 Pulse Analysis Result Display.......................................................................................80
7.4.2 Pulse Analysis Settings.................................................................................................80
7.4.3 Pulse Analysis Dialog....................................................................................................81
7.5 Time Gate.....................................................................................................................88
7.5.1 Time Gate Result Display..............................................................................................89
7.5.2 Time Gate Settings........................................................................................................90
7.5.3 Gate Configuration Dialog.............................................................................................92
7.6 Timeslot........................................................................................................................93
7.6.1 Timeslot Result Display.................................................................................................94
7.6.2 Timeslot Settings...........................................................................................................96

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7.6.3 Timeslot Configuration Dialog....................................................................................... 97
7.7 Statistics...................................................................................................................... 99
7.7.1 Statistics Result Display................................................................................................99
7.7.2 Statistics Settings........................................................................................................101
7.7.3 Measurement Settings Dialog..................................................................................... 102
7.7.4 Scale Configuration Dialog..........................................................................................103
7.7.5 Statistics Timing Dialog...............................................................................................105
7.8 NRT.............................................................................................................................106
7.8.1 NRT Result Display.....................................................................................................106
7.8.2 NRT Settings...............................................................................................................107
7.8.3 Measurement Main Configuration Dialog.................................................................... 111
8 Sensor Configuration.........................................................................113
8.1 Mode Settings............................................................................................................113
8.2 Correction Settings................................................................................................... 117
8.3 Filter Settings............................................................................................................ 120
8.4 Range Settings.......................................................................................................... 124
8.5 NRT Measurement Type............................................................................................126
8.5.1 NRT Mode Settings.....................................................................................................127
8.5.2 NRT Correction Settings............................................................................................. 128
8.5.3 NRT Filter Settings......................................................................................................130
9 Saving and Recalling Settings..........................................................132
10 Zeroing Sensors.................................................................................134
11 System Settings................................................................................. 136
11.1 Connections.............................................................................................................. 136
11.1.1 Network Settings......................................................................................................... 137
11.1.2 Remote Settings..........................................................................................................140
11.1.3 Input/Output Settings (I/O).......................................................................................... 143
11.1.4 Sensor Manager..........................................................................................................149
11.2 Instrument Info.......................................................................................................... 152
11.2.1 System Info................................................................................................................. 152
11.2.2 Security Settings......................................................................................................... 155
11.2.3 Option Settings............................................................................................................158

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11.2.4 Help & Copyrights....................................................................................................... 161
11.3 Hardware Configuration........................................................................................... 162
11.4 Test............................................................................................................................. 163
11.5 Global Settings..........................................................................................................164
12 Firmware Update................................................................................166
12.1 Firmware Update via PC and USB or Ethernet Connection.................................. 166
12.1.1 Hardware and Software Requirements....................................................................... 166
12.1.2 Preparing an Update................................................................................................... 167
12.1.3 Updating the Application Firmware............................................................................. 168
12.2 Firmware Update via a USB Flash Memory Stick...................................................171
12.2.1 Hardware and Software Requirements....................................................................... 171
12.2.2 Preparing an Update................................................................................................... 171
12.2.3 Updating the Application Firmware............................................................................. 172
13 Remote Control Commands..............................................................173
13.1 Conventions Used in SCPI Command Descriptions..............................................173
13.2 Common Commands................................................................................................ 173
13.3 Addressing Measurements and Sensors................................................................182
13.4 Starting and Ending a Measurement.......................................................................183
13.5 Measurement Settings and Results........................................................................ 186
13.5.1 Configuring Display and Results................................................................................. 187
13.5.1.1 General Settings......................................................................................................... 187
13.5.1.2 Scaling........................................................................................................................ 194
13.5.1.3 Units............................................................................................................................ 207
13.5.1.4 Limits...........................................................................................................................209
13.5.1.5 Result Formats and Screenshots................................................................................218
13.5.2 Configuring the Trigger................................................................................................219
13.5.3 Selecting the Measurement........................................................................................ 228
13.5.4 Selecting the Power Sensor........................................................................................232
13.5.5 Relative Measurements.............................................................................................. 233
13.5.6 Continuous Average....................................................................................................235
13.5.7 Trace........................................................................................................................... 237
13.5.7.1 Trace Measurement Settings...................................................................................... 237
13.5.7.2 Combining Trace Commands......................................................................................238

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13.5.7.3 Using Markers............................................................................................................. 240
13.5.8 Pulse Analysis.............................................................................................................247
13.5.9 Time Gate....................................................................................................................263
13.5.10 Timeslot.......................................................................................................................265
13.5.11 Statistics......................................................................................................................268
13.5.11.1 Statistics Measurement Settings.................................................................................268
13.5.11.2 Combining Statistics Commands................................................................................ 271
13.5.11.3 Scaling........................................................................................................................ 272
13.5.11.4 Using Markers............................................................................................................. 277
13.5.12 NRT.............................................................................................................................279
13.5.13 Querying Measurement Results..................................................................................286
13.6 Calculation Functions...............................................................................................287
13.6.1 Selecting a Calculation Function.................................................................................287
13.6.2 Using a Calculation Function...................................................................................... 289
13.6.2.1 Continuous Average Calculation Functions................................................................ 290
13.6.2.2 Continuous Average Calculation Functions with Buffering..........................................296
13.6.2.3 Burst Average Calculation Functions.......................................................................... 302
13.6.2.4 Timeslot Calculation Functions................................................................................... 310
13.7 Configuring Sensors.................................................................................................319
13.7.1 Setting the Frequency................................................................................................. 319
13.7.2 Sensor Modes............................................................................................................. 320
13.7.3 Sensor Corrections..................................................................................................... 324
13.7.4 Sensor Filters.............................................................................................................. 329
13.7.5 Sensor Ranges........................................................................................................... 337
13.7.6 Standardized Signals.................................................................................................. 340
13.7.6.1 Commands..................................................................................................................340
13.7.6.2 Preconfigured Settings................................................................................................341
13.7.6.3 Display Configuration.................................................................................................. 351
13.7.7 Frequency Selective Power Sensors.......................................................................... 353
13.7.8 NRT Measurement Type............................................................................................. 355
13.7.8.1 NRT Mode Settings.....................................................................................................355
13.7.8.2 NRT Correction Settings............................................................................................. 359
13.7.8.3 NRT Filter Settings......................................................................................................362

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13.8 Configuring the Test Generator............................................................................... 365
13.9 Configuring the Analog Signal Ouput and the Trigger Input/Output................... 367
13.10 Zeroing....................................................................................................................... 376
13.11 Running Selftests......................................................................................................378
13.12 Managing Setups and Correction Tables................................................................380
13.13 System Information and Configuration...................................................................387
13.13.1 Presetting.................................................................................................................... 388
13.13.2 Shutdown and Reboot.................................................................................................388
13.13.3 Firmware Update.........................................................................................................389
13.13.4 Network Settings......................................................................................................... 390
13.13.5 Remote Settings..........................................................................................................393
13.13.6 Managing Sensors...................................................................................................... 396
13.13.7 Instrument Information................................................................................................ 398
13.13.8 Date and Time Settings...............................................................................................400
13.13.9 Error Messages...........................................................................................................402
13.13.10 Locking........................................................................................................................405
13.14 Using the Status Register........................................................................................ 406
13.14.1 General Status Register Commands.......................................................................... 406
13.14.2 Reading Out the CONDition Part................................................................................ 407
13.14.3 Reading Out the EVENt Part.......................................................................................407
13.14.4 Controlling the ENABle Part........................................................................................408
13.14.5 Controlling the Negative Transition Part......................................................................408
13.14.6 Controlling the Positive Transition Part....................................................................... 409
13.15 R&S NRP2 Compatibility.......................................................................................... 410
13.15.1 CALCulate Commands............................................................................................... 410
13.15.2 DISPlay Commands.................................................................................................... 411
13.15.3 OUTPut Commands....................................................................................................416
13.15.4 SENSe Commands..................................................................................................... 418
14 Remote Control Basics......................................................................449
14.1 Remote Control Interfaces and Protocols.............................................................. 449
14.1.1 USB Interface..............................................................................................................449
14.1.2 Ethernet Interface........................................................................................................450
14.1.2.1 VISA Resource Strings............................................................................................... 451

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14.1.2.2 VXI-11 Protocol........................................................................................................... 452
14.1.2.3 HiSLIP Protocol...........................................................................................................452
14.1.2.4 Socket Communication............................................................................................... 453
14.1.3 GPIB Interface.............................................................................................................453
14.2 SCPI Command Structure........................................................................................ 453
14.2.1 Syntax for Common Commands................................................................................. 454
14.2.2 Syntax for Device-Specific Commands.......................................................................454
14.2.3 SCPI Parameters........................................................................................................ 455
14.2.4 Overview of Syntax Elements..................................................................................... 458
14.2.5 Structure of a Command Line..................................................................................... 458
14.2.6 Responses to Queries.................................................................................................459
14.3 Command Sequence and Synchronization............................................................ 460
14.3.1 Preventing Overlapping Execution..............................................................................460
14.4 Status Reporting System......................................................................................... 461
14.4.1 Hierarchy of the Status Registers............................................................................... 461
14.4.2 Structure of a SCPI Status Register............................................................................462
14.4.3 Status Byte (STB) and Service Request Enable Register (SRE)................................464
14.4.4 IST Flag and Parallel Poll Enable Register (PPE)...................................................... 465
14.4.5 Device Status Register................................................................................................465
14.4.6 Questionable Status Register..................................................................................... 467
14.4.6.1 Questionable Power Status Register.......................................................................... 468
14.4.6.2 Questionable Measurement Status Registers.............................................................469
14.4.6.3 Questionable Calibration Status Register................................................................... 470
14.4.7 Standard Event Status and Enable Register (ESR, ESE)...........................................471
14.4.8 Operation Status Register...........................................................................................472
14.4.8.1 Operation Calibrating Status Register.........................................................................473
14.4.8.2 Operation Measuring Status Register......................................................................... 474
14.4.8.3 Operation Measuring Extended Status Registers....................................................... 475
14.4.8.4 Operation Trigger Status Register...............................................................................476
14.4.8.5 Operation Trigger Extended Status Registers.............................................................477
14.4.8.6 Operation Sense Status Register................................................................................478
14.4.8.7 Operation Lower Limit Fail Status Registers...............................................................479
14.4.8.8 Operation Upper Limit Fail Status Registers...............................................................481

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11User Manual 1178.5566.02 ─ 07
15 Troubleshooting................................................................................. 483
15.1 Displaying Information............................................................................................. 483
15.2 Error Messages......................................................................................................... 483
15.2.1 Interpreting the Errors and Error Codes......................................................................484
15.2.1.1 System Errors............................................................................................................. 484
15.2.1.2 Power Sensor Errors...................................................................................................485
15.2.1.3 Sensor Check Source (R&S NRX-B1) Errors............................................................. 486
15.2.1.4 License Key Errors......................................................................................................487
15.2.1.5 Error Handling Errors.................................................................................................. 487
15.3 Performing Tests.......................................................................................................487
15.4 Collecting Information for Technical Support........................................................ 487
15.5 Contacting Customer Support.................................................................................488
Glossary: List of Abbreviations........................................................489
List of Commands..............................................................................491
Index....................................................................................................510

Contents
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12User Manual 1178.5566.02 ─ 07

Preface
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1 Preface
This chapter provides an overview of the user documentation and an introduction to
the R&S NRX.
1.1 Documentation Overview
This section provides an overview of the R&S NRX user documentation. Unless speci-
fied otherwise, you find the documents on the R&S NRX product page at:
www.rohde-schwarz.com/manual/NRX
1.1.1 Getting Started Manual
Introduces the R&S NRX and describes how to set up and start working with the prod-
uct. A printed version is delivered with the instrument.
1.1.2 User Manual
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, instrument interfaces
and error messages. Includes the contents of the getting started manual .
The user manual is provided on the R&S NRX for download under:
[System] > "Instrument Info" > "Help & Copyrights"
For further details, see Chapter 11.2.4, "Help & Copyrights", on page 161.
1.1.3 Tutorials
Tutorials offer guided examples and demonstrations on operating the R&S NRX. They
are provided on the product page of the internet.
1.1.4 Instrument Security Procedures
Deals with security issues when working with the R&S NRX in secure areas. It is avail-
able for download on the Internet.
Documentation Overview

Preface
R&S®NRX
14User Manual 1178.5566.02 ─ 07
1.1.5 Basic Safety Instructions
Contains safety instructions, operating conditions and further important information.
The printed document is delivered with the instrument.
1.1.6 Data Sheets and Brochures
The data sheet contains the technical specifications of the R&S NRX. 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 char-
acteristics.
See www.rohde-schwarz.com/brochure-datasheet/NRX
1.1.7 Release Notes and Open Source Acknowledgment (OSA)
The release notes list new features, improvements and known issues of the current
firmware version.
The open source acknowledgment and the license texts of open source software pack-
ages used in the R&S NRX software are provided under:
[System] > "Instrument Info" > "Help & Copyrights"
For further details, see Chapter 11.2.4, "Help & Copyrights", on page 161.
See www.rohde-schwarz.com/firmware/NRX
1.2 Key Features
The R&S NRX supports:
●Easy RF power measurements
●Multi-channel measurements
●RF pulse analysis
●System integration
The R&S NRX is a versatile, user-friendly base unit.
●Straightforward numerical and graphical display of measured values, plus intuitive
operation with touchscreen-based graphical user interface
●Supports up to four R&S NRP and R&S NRQ6 power sensors.
●Supports all sensor-dependent measurement functions
●Hardware interfaces for remote control and triggering
●Code emulation of the R&S NRP2
●Optional high-precision CW and pulse mode reference source module
●Optional power reflection measurements with R&S NRT directional power sensors
Key Features

Preface
R&S®NRX
15User Manual 1178.5566.02 ─ 07
See also the R&S NRX fact sheet at www.rohde-schwarz.com.
Key Features

Safety and Regulatory Information
R&S®NRX
16User Manual 1178.5566.02 ─ 07
2 Safety and Regulatory Information
The product documentation helps you use the R&S NRX safely and efficiently. Follow
the instructions provided here and in the printed "Basic Safety Instructions". Keep the
product documentation nearby and offer it to other users.
Intended use
The R&S NRX is intended for the development, production and verification of elec-
tronic components and devices in industrial, administrative, and laboratory environ-
ments. Use the R&S NRX only for its designated purpose. Observe the operating con-
ditions and performance limits stated in the data sheet.
Where do I find safety information?
Safety information is part of the product documentation. It warns you about the poten-
tial dangers and gives instructions how to prevent personal injuries or damage caused
by dangerous situations. Safety information is provided as follows:
●The printed "Basic Safety Instructions" provide safety information in many lan-
guages and are delivered with the R&S NRX.
●Throughout the documentation, safety instructions are provided when you need to
take care during setup or operation.
2.1 Korea Certification Class B
이 기기는 가정용(B급) 전자파 적합기기로서 주로 가정에서 사용하는 것을 목적으로 하
며, 모든 지역에서 사용할 수 있습니다.
Korea Certification Class B

Getting Started
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17User Manual 1178.5566.02 ─ 07
3 Getting Started
3.1 Preparing for Use
●Unpacking and Checking........................................................................................ 17
●Operating Conditions.............................................................................................. 17
●Considerations for Test Setup.................................................................................18
●Placing on a Bench Top.......................................................................................... 18
●Mounting in a Rack................................................................................................. 19
●Connecting to the AC Power Supply.......................................................................19
●Switching On or Off.................................................................................................20
●Connecting Power Sensors.....................................................................................21
●Connecting USB and External Devices...................................................................23
3.1.1 Unpacking and Checking
Check the equipment for completeness using the delivery note and the accessory lists
for the various items. Check the R&S NRX for any damage. If there is damage, imme-
diately contact the carrier who delivered the R&S NRX. Make sure not to discard the
box and packing material.
Packing material
Retain the original packing material. If the instrument needs to be transported or ship-
ped later, you can use the material to protect the control elements and connectors.
3.1.1.1 Accessory List
The R&S NRX comes with the following accessories:
●Printed getting started manual
●Multilingual safety brochure
●Additive data sheet ref. China ROHS
●Country-specific power cable
3.1.2 Operating Conditions
Specific operating conditions are required to ensure accurate measurements and to
avoid damage to the R&S NRX and connected devices. Before switching on the R&S
NRX, observe the information on appropriate operating conditions provided in the basic
safety instructions and the data sheet of the R&S NRX.
In particular, ensure the following:
●The R&S NRX is dry and shows no sign of condensation.
Preparing for Use

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18User Manual 1178.5566.02 ─ 07
●The ambient temperature does not exceed the range specified in the data sheet.
●Signal levels at the input connectors are all within the specified ranges.
●Signal outputs are connected correctly and are not overloaded.
3.1.3 Considerations for Test Setup
Preventing electrostatic discharge (ESD)
Electrostatic discharge is most likely to occur when you connect or disconnect a DUT
or test fixture to the instrument's test ports.
►NOTICE! Risk of electrostatic discharge (ESD). Electrostatic discharge (ESD) can
damage the electronic components of the R&S NRX and the device under test
(DUT).
Ground yourself to avoid electrostatic discharge (ESD) damage:
● Use a wrist strap and cord to connect yourself to the ground.
● Use a conductive floor mat and heel strap combination.
EMI impact on measurement results
Electromagnetic interference (EMI) may affect the measurement results.
To suppress generated electromagnetic interference (EMI):
●Use suitable shielded cables of high quality. For example, use double-shielded RF
and LAN cables.
●Always terminate open cable ends.
●Note the EMC classification in the data sheet.
●Do not use USB connecting cables exceeding 5 m.
3.1.4 Placing on a Bench Top
Place the R&S NRX on a stable and level surface. The R&S NRX can be used in hori-
zontal position, standing on its feet, or with the support feet on the bottom extended.
Do not place anything on top of the R&S NRX, if the R&S NRX is not in a level posi-
tion.
To place the R&S NRX on a bench top
1. Place the R&S NRX on a stable, flat and level surface. Ensure that the surface can
support the weight of the R&S NRX. For information on the weight, see the data
sheet.
2. CAUTION! Foldable feet can collapse. 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.
Preparing for Use

Getting Started
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19User Manual 1178.5566.02 ─ 07
With folded-out feet, do not place anything on top or underneath the instrument.
3. WARNING! A stack of products can fall over and cause injury. Never stack more
than three products on top of each other. Instead, mount them in a rack.
Stack as follows:
● It is best if all instruments have the same dimensions (width and length).
● The overall load on the lowest instrument must not exceed 500 N.
● With smaller instruments on top of the lowest instrument, the overall load on
the lowest instrument must not exceed 250 N.
Too many instruments
max. 500 N
Correct Different dimensions
max. 250 N
4. NOTICE! Overheating can damage the product.
Prevent overheating as follows:
● Keep a minimum distance of 10 cm between the fan openings of the R&S NRX
and any object in the vicinity.
● Do not place the R&S NRX next to heat-generating equipment such as radia-
tors or other instruments.
3.1.5 Mounting in a Rack
1. Order one of the rack adapter kits designed for the R&S NRX. For the order num-
ber, see data sheet.
2. Follow the installation instructions provided with the adapter kit.
3. NOTICE! Insufficient airflow can cause overheating and damage the product.
Design and implement an efficient ventilation concept for the rack.
3.1.6 Connecting to the AC Power Supply
The R&S NRX can be used with different AC power voltages and adapts itself auto-
matically to them. Adjusting the R&S NRX to a particular AC supply voltage is therefore
not required. Refer to the data sheet for the requirements of voltage and frequency.
The power switch can be set to two positions:
Preparing for Use

Getting Started
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20User Manual 1178.5566.02 ─ 07
●[0]: The instrument is disconnected from the mains.
●[I]: The instrument is power-supplied. It is either ready for operation (STANDBY) or
in operating mode.
1. Plug the AC power cable into the AC power connector on the rear panel of the
R&S NRX. Only use the power cable delivered with the R&S NRX.
2. Plug the AC power cable into a power outlet with ground contact. The R&S NRX
complies with safety class EN61010-1.
The required ratings are listed next to the AC connector and in the data sheet.
Further information:
●Chapter 3.2.2.5, "AC Supply and Power Switch", on page 29
3.1.7 Switching On or Off
The possible instrument states are described in Chapter 3.2.1.6, "On/Standby Key",
on page 27.
To switch on the R&S NRX
1. To turn on the power, press the AC power switch at the rear to position [I] (On).
After power-up, the R&S NRX is in standby or ready state, depending on the posi-
tion of the on/standby key.
2. If the R&S NRX is in standby state, press the on/standby key.
The R&S NRX initiates its startup procedure. It boots the operating system and
starts the instrument firmware.
See Chapter 4.1.1, "Start Dialog", on page 31.
If the previous session ended regularly, the R&S NRX uses the settings from the
last session.
3. If you want to return to a defined initial state, perform a preset.
See "Preset" on page 133.
To switch off the R&S NRX
1. Press the on/standby key.
The R&S NRX saves its current settings for reuse in the next session and changes
into the standby state.
2. To power down the R&S NRX completely, set the AC power switch to position [0]
(Off).
Further information:
●Chapter 9, "Saving and Recalling Settings", on page 132
●Chapter 3.2.1.6, "On/Standby Key", on page 27
Preparing for Use