R&S NRQ6 User manual

R&S®NRQ6
Frequency Selective
Power Sensor
Getting Started
1178370502
Version 08
(;ÜU52)

This document describes the following power sensor:
●R&S®NRQ6 (1421.3509K02)
© 2022 Rohde & Schwarz GmbH & Co. KG
Muehldorfstr. 15, 81671 Muenchen, 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.
1178.3705.02 | Version 08 | R&S®NRQ6
Throughout this manual, products from Rohde & Schwarz are indicated without the ® symbol , e.g.
R&S®NRQ6 is indicated as R&S NRQ6.

Contents
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Contents
1 Safety and regulatory information....................................... 7
1.1 Safety instructions................................................................................7
1.2 Labels on the product.......................................................................... 9
1.3 Warning messages in the documentation.......................................... 9
2 Welcome............................................................................... 11
2.1 Documentation overview....................................................................11
2.1.1 Getting started manual..........................................................................11
2.1.2 User manual..........................................................................................11
2.1.3 CD-ROM................................................................................................11
2.1.4 Application sheets.................................................................................12
2.1.5 Tutorials................................................................................................ 12
2.1.6 Instrument security procedures.............................................................12
2.1.7 Basic safety instructions....................................................................... 12
2.1.8 Data sheets and brochures...................................................................12
2.1.9 Release notes and open source acknowledgment (OSA).................... 12
2.1.10 Application notes, application cards, white papers, etc........................ 13
2.2 Key features........................................................................................ 13
3 Preparing for use................................................................. 15
3.1 Unpacking and checking....................................................................15
3.2 Choosing the operating site.............................................................. 15
3.3 Considerations for test setup............................................................ 16
3.4 Connecting to a DUT.......................................................................... 17
3.5 Connecting to a power supply...........................................................18
3.6 Connecting to a controlling host.......................................................18
3.6.1 Computer using a LAN connection....................................................... 19

Contents
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3.6.2 Computer using a USB connection.......................................................25
3.6.3 R&S NRX base unit.............................................................................. 28
4 R&S NRQ6 tour.................................................................... 31
4.1 RF connector.......................................................................................31
4.2 Status information.............................................................................. 32
4.3 LAN PoE+ interface.............................................................................32
4.4 Host interface...................................................................................... 34
4.5 Trigger 2 I/O (TRIG2)........................................................................... 35
4.6 Reference I/O (REF)............................................................................ 35
4.7 Clock I/O (CLK)....................................................................................35
4.8 Local oscillator I/O (LO)..................................................................... 36
4.9 Fan openings.......................................................................................36
5 Operating concepts............................................................. 37
5.1 R&S NRP Toolkit................................................................................. 37
5.1.1 Versions and downloads....................................................................... 37
5.1.2 System requirements............................................................................ 38
5.1.3 R&S NRP Toolkit for Windows.............................................................. 38
5.2 Browser-based user interface........................................................... 39
5.2.1 Layout of the main dialog......................................................................41
5.2.2 Tooltips..................................................................................................42
5.2.3 Toolbar in charts....................................................................................43
5.2.4 Setting parameters................................................................................43
5.3 R&S NRX..............................................................................................45
5.4 Remote control....................................................................................46
6 Remote control interfaces and protocols..........................49
6.1 USB interface...................................................................................... 49

Contents
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6.2 Ethernet interface............................................................................... 51
6.2.1 VISA resource strings........................................................................... 51
7 Contacting customer support............................................ 55
Index..................................................................................... 57

Contents
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Safety and regulatory information
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1 Safety and regulatory information
The product documentation helps you use the product safely and efficiently. Fol-
low the instructions provided here and in the following chapters.
Intended use
The R&S NRQ6 is intended for precise and fast power measurements in develop-
ment and for monitoring and maintenance purposes. The supported base units
are listed in the data sheet. Observe the operating conditions and performance
limits stated in the data sheet.
Target audience
The target audience is developers and technicians. The required skills and expe-
rience in power measurements depend on the used operating concept.
Main applications are TX power calibration, band-limited power measurements on
multistandard radios (MSR), fast power servoing and calibration of multiple active
antenna modules for beamforming.
Where do I find safety information?
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 7. 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 prod-
uct documentation nearby and offer it to other users.
Safety instructions

Safety and regulatory information
R&S®NRQ6
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Use the product only for its intended use and within its performance limits. Inten-
ded 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.
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
damaged or broken, stop using the product. Contact Rohde & Schwarz customer
service at http://www.customersupport.rohde-schwarz.com.
Choosing the operating site
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 elec-
tric 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, you can operate the product up to an altitude of
2000 m above sea level. The product is suitable for pollution degree 2 environ-
ments where nonconductive contamination can occur. For more information on
environmental conditions such as ambient temperature and humidity, see the
data sheet.
Meaning of safety labels
Safety labels on the product warn against potential hazards.
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.
Safety instructions

Safety and regulatory information
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1.2 Labels on the product
Labels on the product inform about:
●Personal safety
See "Meaning of safety labels" on page 8.
●Environment safety
See Table 1-1.
●Identification of the product
See "Default hostname" on page 23.
Table 1-1: Labels regarding environment safety
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 the user manual.
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.
NOTICE
Potential risks of damage. Could result in damage to the supported product or to
other property.
Warning messages in the documentation

Safety and regulatory information
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Warning messages in the documentation

Welcome
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2 Welcome
This chapter provides an overview of the user documentation and an introduction
to the R&S NRQ6.
2.1 Documentation overview
This section provides an overview of the R&S NRQ6 user documentation.
Unless specified otherwise, you find the documents on the R&S NRQ6 product
page at:
www.rohde-schwarz.com/manual/NRQ6
2.1.1 Getting started manual
Introduces the R&S NRQ6 and describes how to set up and start working with the
product. A printed version is delivered with the R&S NRQ6.
2.1.2 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, instru-
ment interfaces and error messages. Includes the contents of the getting started
manual.
The user manual is also available for download or for immediate display on the
Internet.
2.1.3 CD-ROM
Provides quick access to valuable information about the usage of the R&S NRQ6.
Delivered with the R&S NRQ6. Most of the information is also provided at the
R&S Internet site, but on different pages.
●Useful software for installation, operation and remote control
●Product documentation (including open source acknowledgment document)
Documentation overview

Welcome
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●Certificates
●Links to useful sites on the Rohde & Schwarz website
2.1.4 Application sheets
Deal with special tasks and their practical solution.
2.1.5 Tutorials
Tutorials offer guided examples and demonstrations on operating the R&S NRQ6.
They are provided on the product page of the internet.
2.1.6 Instrument security procedures
Deals with security issues when working with the R&S NRQ6 in secure areas. It is
available for download on the Internet.
2.1.7 Basic safety instructions
Contains safety instructions, operating conditions and further important informa-
tion. The printed document is delivered with the R&S NRQ6.
2.1.8 Data sheets and brochures
The data sheet contains the technical specifications of the R&S NRQ6. It also
lists the options and their order numbers, and optional accessories.
The brochure provides an overview of the instrument and deals with the specific
characteristics.
See www.rohde-schwarz.com/brochure-datasheet/NRQ6
2.1.9 Release notes and open source acknowledgment (OSA)
The release notes list new features, improvements and known issues of the cur-
rent firmware version, and describe the firmware installation.
Documentation overview

Welcome
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The "Open Source Acknowledgment" is provided on the user documentation CD-
ROM, included in the delivery. It contains verbatim license texts of the used open
source software.
See www.rohde-schwarz.com/firmware/NRQ6
2.1.10 Application notes, application cards, white papers, etc.
These documents deal with special applications or background information on
particular topics.
See www.rohde-schwarz.com/application/NRQ6
2.2 Key features
The R&S NRQ6 frequency selective power sensor sets standards in RF perfor-
mance and usability. Outstanding key features are:
●Combines the advantages of a measurement receiver (dynamic range, linear-
ity & video bandwidth) and a conventional diode-based or thermal power sen-
sor (stability, absolute accuracy & source match).
●Easy operation with features such as browser-based user interface, autoset
configuration, automatic frequency tracking or spectral preview (signal check).
●Measurements in low RF level ranges that are beyond the range of classical
power meters. Faster measurements in the RF level range close to the lower
boundary of classical power meters.
●Frequency selective measurements with adjustable bandwidth including a
built-in ACLR measurement function
For a detailed specification, refer to the data sheet.
Key features

Welcome
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Key features

Preparing for use
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3 Preparing for use
Here, you can find basic information about setting up the product for the first time.
●Unpacking and checking................................................................................. 15
●Choosing the operating site............................................................................ 15
●Considerations for test setup.......................................................................... 16
●Connecting to a DUT.......................................................................................17
●Connecting to a power supply.........................................................................18
●Connecting to a controlling host......................................................................18
3.1 Unpacking and checking
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.
3.2 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 8.
Choosing the operating site

Preparing for use
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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 under "Gen-
eral data".
●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.
If class A equipment causes radio disturbances, take appropriate measures to
eliminate them.
3.3 Considerations for test setup
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 inter-
face cables.
●Always terminate open cable ends.
●Ensure that connected external devices comply with EMC regulations.
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 devi-
ces.
Allow sufficient airflow
The R&S NRQ6 has fan openings at both sides of the casing, as shown in Fig-
ure 4-1. If the R&S NRQ6 runs with insufficient airflow for a longer period, the
R&S NRQ6 overheats. Overheating can disturb the operation, damage the
R&S NRQ6 and lead to wrong measurement results.
Considerations for test setup

Preparing for use
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17Getting Started 1178.3705.02 ─ 08
When setting up the measurement assembly, be careful to allow sufficient airflow.
Make sure of the following:
●All fan openings are unobstructed.
●Airflow perforations are unimpeded.
●Minimum distance between the fan openings and any object is 10 cm.
3.4 Connecting to a DUT
For connecting the R&S NRQ6 to a DUT, use the RF connector of the
R&S NRQ6. For details, see Chapter 4.1, "RF connector", on page 31.
To connect to the DUT
1. Ensure that the RF connector of your DUT is compatible with the RF connec-
tor of the R&S NRQ6.
2. Inspect both RF connectors carefully. Look for metal particles, contaminants
and defects.
If one the RF connectors is damaged, do not proceed, because the risk of
damaging the mating connector is too high.
3. Insert the RF connector straight into the RF output of your DUT. Take care not
to tilt it.
SMART SENSOR TECHNOLOGY
NRQ6
Frequency Selective Power Sensor
LAN PoE+
Host
Interface
Sample Clock I/O (Default: 120 MHz)
LO I/0
180
4. NOTICE! Risk of damaging the center pin of the RF connector. Only rotate the
hex nut of the RF connector. Never rotate the R&S NRQ6 itself.
Tighten the RF connector manually.
5. Tighten the RF connector using a torque wrench with the nominal torque of
1.36 Nm (12'' lbs) to ensure maximum measurement accuracy.
To disconnect from the DUT
1. NOTICE! Risk of damaging the center pin of the RF connector. Only rotate the
hex nut of the RF connector. Never rotate the R&S NRQ6 itself.
Connecting to a DUT

Preparing for use
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Carefully loosen the union nut at the front of the RF connector of the
R&S NRQ6.
2. Remove the R&S NRQ6.
3.5 Connecting to a power supply
The power for the R&S NRQ6 is supplied over the LAN PoE+ interface. See also
Chapter 4.3, "LAN PoE+ interface", on page 32.
Choose the PoE+ power sourcing equipment (PSE) with care
Only use PoE+ power sourcing equipment (PSE) as specified in the IEEE 802.3at
standard. Otherwise, the following can happen:
●If too much power is supplied, the R&S NRQ6 can get overheated and
become damaged as a result.
●If the supplied power is not sufficient, the R&S NRQ6 does not work properly
or not at all.
To connect to a LAN PoE+ interface
1. Use a suitable cable as described in Chapter 4.3, "LAN PoE+ interface",
on page 32.
2. Connect one end of the cable to the LAN interface of the R&S NRQ6.
3. Connect the other end of the cable to one of the following:
● PoE+ port of a LAN switch:
See Chapter 3.6.1.1, "Setup with a PoE+ ethernet switch", on page 20.
● Output of a PoE+ injector:
See Chapter 3.6.1.2, "Setup with a PoE+ injector and a non-PoE+ ethernet
switch", on page 21.
See Chapter 3.6.1.3, "Setup with a PoE+ injector", on page 22.
3.6 Connecting to a controlling host
For operating the R&S NRQ6, you can choose from various possibilities. For
details, see Chapter 5, "Operating concepts", on page 37.
Connecting to a controlling host

Preparing for use
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The suitable interface depends on the controlling host:
●Computer
LAN interface
USB interface
●R&S NRX
Host interface
Contents:
●Computer using a LAN connection................................................................. 19
●Computer using a USB connection................................................................. 25
●R&S NRX base unit.........................................................................................28
3.6.1 Computer using a LAN connection
There are different ways to connect the R&S NRQ6 to a computer according to
the available equipment. The power for the R&S NRQ6 is supplied over the LAN
PoE+ interface.
Further information:
●Chapter 3.5, "Connecting to a power supply", on page 18
●Chapter 6, "Remote control interfaces and protocols", on page 49
Contents:
●Setup with a PoE+ ethernet switch................................................................. 20
●Setup with a PoE+ injector and a non-PoE+ ethernet switch..........................21
●Setup with a PoE+ injector.............................................................................. 22
●Establishing a connection............................................................................... 22
●Using hostnames............................................................................................ 23
●Assigning the IP address................................................................................ 24
Connecting to a controlling host

Preparing for use
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3.6.1.1 Setup with a PoE+ ethernet switch
NRQ6
Frequency Selective Power Sensor
LAN PoE+
Host
Interface
Sample Clock I/O (Default: 120 MHz)
LO I/0
1 2
3 4 5
6
7
Figure 3-1: Setup with a PoE+ Ethernet switch
1 = Signal source (DUT)
2 = R&S NRQ6
3 = RJ.45 Ethernet connector
4, 6 = RJ.45 Ethernet cable
5 = Computer
7 = Ethernet switch supporting PoE+ power delivery
1. Connect the [RF] connector of the R&S NRQ6 to the DUT. See Chapter 3.4,
"Connecting to a DUT", on page 17.
2. Connect the RJ.45 Ethernet connector of the R&S NRQ6 to an Ethernet
switch that supports PoE+ power delivery.
3. Connect the computer to the Ethernet switch.
4. Establish a connection between the R&S NRQ6 and the network. See Chap-
ter 3.6.1.4, "Establishing a connection", on page 22.
Connecting to a controlling host