Rohde&Schwarz R&S®NRQ6 Frequency Selective Power Sensor - User Manual
R&S®NRQ6
Frequency Selective Power Sensor
User Manual
(;ÜTê2)
1178369202
Version 08
This manual describes the R&S®NRQ6 (1421.3509K02) with firmware version FW 02.30 and later.
© 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.
Trade names are trademarks of the owners.
1178.3692.02 | 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.
R&S®NRQ6
2.1.1 Getting started manual..................................................................................................12
2.1.2 User manual..................................................................................................................12
2.1.3 CD-ROM....................................................................................................................... 12
2.1.4 Application sheets......................................................................................................... 12
Contents
Contents
1 Safety and regulatory information........................................................9
1.1 Safety instructions........................................................................................................9
1.2 Labels on the product.................................................................................................10
1.3 Warning messages in the documentation................................................................ 10
2 Welcome............................................................................................... 12
2.1 Documentation overview............................................................................................12
2.1.5 Tutorials.........................................................................................................................13
2.1.6 Instrument security procedures.....................................................................................13
2.1.7 Basic safety instructions................................................................................................13
2.1.8 Data sheets and brochures........................................................................................... 13
2.1.9 Release notes and open source acknowledgment (OSA)............................................ 13
2.1.10 Application notes, application cards, white papers, etc.................................................13
2.2 Key features.................................................................................................................14
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...................................................................................................16
3.5 Connecting to a power supply...................................................................................17
3.6 Connecting to a controlling host...............................................................................18
3.6.1 Computer using a LAN connection............................................................................... 18
3.6.2 Computer using a USB connection............................................................................... 23
3.6.3 R&S NRX base unit.......................................................................................................26
4 R&S NRQ6 tour.....................................................................................28
4.1 RF connector............................................................................................................... 28
4.2 Status information...................................................................................................... 29
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5.1.1 Versions and downloads............................................................................................... 33
5.1.2 System requirements.................................................................................................... 33
5.1.3 R&S NRP Toolkit for Windows...................................................................................... 34
Contents
4.3 LAN PoE+ interface.....................................................................................................29
4.4 Host interface.............................................................................................................. 31
4.5 Trigger 2 I/O (TRIG2)................................................................................................... 31
4.6 Reference I/O (REF).................................................................................................... 31
4.7 Clock I/O (CLK)............................................................................................................32
4.8 Local oscillator I/O (LO)..............................................................................................32
4.9 Fan openings...............................................................................................................32
5 Operating concepts............................................................................. 33
5.1 R&S NRP Toolkit..........................................................................................................33
5.2 Browser-based user interface....................................................................................35
5.2.1 Layout of the main dialog.............................................................................................. 36
5.2.2 Tooltips..........................................................................................................................38
5.2.3 Toolbar in charts............................................................................................................38
5.2.4 Setting parameters........................................................................................................39
5.3 R&S NRX...................................................................................................................... 40
5.4 Remote control............................................................................................................41
6 Measurement basics............................................................................43
6.1 Functional principle.................................................................................................... 43
6.2 Measurement procedure in principle........................................................................ 43
6.3 Measurement duration................................................................................................44
6.4 Improving measurement results................................................................................45
6.5 Impact of measurement parameters on noise..........................................................45
6.6 Potential sources of error.......................................................................................... 47
6.6.1 Spurious response frequencies.....................................................................................47
6.6.2 LO leakage....................................................................................................................48
7 Adapting to the test signal..................................................................50
7.1 Automatic settings......................................................................................................50
7.2 Frequency configuration............................................................................................ 51
7.2.1 Frequency tracker......................................................................................................... 51
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7.2.2 Frequency adjustment for narrowband measurements.................................................52
7.3.1 Filter characteristics...................................................................................................... 53
7.3.2 Automatic filter type selection....................................................................................... 54
7.3.3 Choosing the correct filter type..................................................................................... 55
8.1.1 Averaging domains........................................................................................................61
8.1.2 Measuring modulated signals....................................................................................... 63
8.1.3 Continuous average parameters...................................................................................63
Contents
7.3 Resolution bandwidth filters......................................................................................53
7.4 RF input attenuation................................................................................................... 57
7.5 Top pane parameters.................................................................................................. 58
8 Measurement modes and result displays..........................................61
8.1 Continuous average mode......................................................................................... 61
8.1.4 Continuous average result display................................................................................ 65
8.2 Trace mode.................................................................................................................. 66
8.2.1 Trace parameters..........................................................................................................66
8.2.2 Trace result display....................................................................................................... 68
8.3 ACLR mode..................................................................................................................70
8.3.1 ACLR parameters......................................................................................................... 70
8.3.2 ACLR result display.......................................................................................................71
8.3.3 DC zeroing in ACLR mode............................................................................................72
8.4 I/Q trace mode............................................................................................................. 73
8.4.1 Phase coherent measurements.................................................................................... 73
8.4.2 Setting the sample rate................................................................................................. 76
8.4.3 I/Q trace parameters..................................................................................................... 77
8.5 Power servoing........................................................................................................... 79
9 Measurement configuration................................................................82
9.1 Controlling the measurement.................................................................................... 82
9.1.1 Controlling the measurement results............................................................................ 82
9.1.2 Interplay of the controlling mechanisms........................................................................83
9.2 Trigger settings........................................................................................................... 88
9.2.1 Trigger states................................................................................................................ 88
9.2.2 Trigger sources............................................................................................................. 89
9.2.3 Dropout time..................................................................................................................89
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9.2.4 Hold-off time..................................................................................................................90
9.2.5 Trigger jitter................................................................................................................... 91
9.2.6 Trigger sender usage.................................................................................................... 91
9.2.7 Trigger parameters........................................................................................................91
9.3.1 Corrections in the RF path............................................................................................ 95
9.3.2 Corrections in the IF path..............................................................................................96
9.3.3 Correction parameters.................................................................................................. 99
9.4.1 Local oscillator signal.................................................................................................. 102
9.4.2 Mixer parameters........................................................................................................ 102
9.5.1 Clock source configuration..........................................................................................104
Contents
9.3 Correction settings..................................................................................................... 95
9.4 Mixer settings............................................................................................................ 101
9.5 Sensor settings......................................................................................................... 104
9.5.2 Sensor parameters......................................................................................................105
10 System configuration........................................................................ 107
10.1 Option management................................................................................................. 107
10.1.1 Installing a license key................................................................................................ 107
10.2 System parameters................................................................................................... 108
11 Firmware update.................................................................................112
11.1 Hardware and software requirements.....................................................................112
11.2 Updating the firmware.............................................................................................. 112
11.2.1 Using the web user interface.......................................................................................112
11.2.2 Using the Firmware Update for NRP Family program................................................. 113
11.2.3 Using remote control................................................................................................... 117
12 Remote control commands...............................................................118
12.1 Conventions used in SCPI command descriptions............................................... 118
12.2 Common commands.................................................................................................119
12.3 Adapting to the test signal....................................................................................... 122
12.4 Selecting a measurement mode.............................................................................. 127
12.5 Starting and ending a measurement....................................................................... 127
12.6 Measurement results................................................................................................ 129
12.6.1 Results of all kind........................................................................................................ 129
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12.6.2 Retrieving continuous average results........................................................................ 132
12.6.3 Retrieving trace results............................................................................................... 134
12.6.4 Retrieving ACLR results..............................................................................................136
12.6.5 Retrieving I/Q trace results..........................................................................................136
12.6.6 Configuring results...................................................................................................... 136
12.9.1 Configuring a continuous average measurement....................................................... 144
12.9.2 Configuring a trace measurement...............................................................................148
12.9.3 Configuring an ACLR measurement........................................................................... 151
12.9.4 Configuring an I/Q trace mode.................................................................................... 151
12.9.5 Configuring the trigger.................................................................................................152
Contents
12.7 Calibrating and zeroing............................................................................................ 139
12.8 Running a selftest..................................................................................................... 143
12.9 Configuring measurement settings.........................................................................144
12.9.6 Configuring the corrections......................................................................................... 160
12.9.7 Configuring the mixer.................................................................................................. 161
12.9.8 Configuring the sensor................................................................................................ 164
12.10 Configuring the system............................................................................................ 166
12.11 Using the status register..........................................................................................178
12.11.1 General status register commands............................................................................. 179
12.11.2 Reading the CONDition part....................................................................................... 179
12.11.3 Reading the EVENt part..............................................................................................179
12.11.4 Controlling the ENABle part........................................................................................ 180
12.11.5 Controlling the negative transition part........................................................................180
12.11.6 Controlling the positive transition part......................................................................... 180
13 Programming examples.................................................................... 182
14 Remote control basics.......................................................................183
14.1 Remote control interfaces and protocols............................................................... 183
14.1.1 USB interface.............................................................................................................. 183
14.1.2 Ethernet interface........................................................................................................184
14.2 Status reporting system........................................................................................... 186
14.2.1 Hierarchy of the status registers................................................................................. 186
14.2.2 Contents of the status registers.................................................................................. 187
14.2.3 Device status register..................................................................................................189
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14.2.4 Questionable status register....................................................................................... 190
14.2.5 Standard event status and enable register (ESR, ESE)............................................. 192
14.2.6 Operation status register.............................................................................................193
15.2.1 Interpreting the error messages.................................................................................. 199
15.4.1 Interpreting the test results..........................................................................................202
Contents
15 Troubleshooting................................................................................. 198
15.1 Displaying status information..................................................................................198
15.2 Error messages......................................................................................................... 198
15.3 Implausible measurement results........................................................................... 200
15.4 Performing a selftest................................................................................................ 201
15.5 Problems during a firmware update........................................................................204
15.6 Cannot establish a LAN connection........................................................................204
15.7 Contacting customer support..................................................................................205
16 Transporting.......................................................................................206
17 Maintenance, storage and disposal................................................. 207
17.1 Regular checks..........................................................................................................207
17.2 Cleaning..................................................................................................................... 208
17.3 Storage.......................................................................................................................208
17.4 Disposal..................................................................................................................... 208
List of commands.............................................................................. 210
Index....................................................................................................215
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Safety and regulatory information
Safety instructions
1 Safety and regulatory information
The product documentation helps you use the product safely and efficiently. Follow the
instructions provided here and in the following chapters.
Intended use
The R&S NRQ6 is intended for precise and fast power measurements in development
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 experience
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 9. 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.
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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Safety and regulatory information
Warning messages in the documentation
aged 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 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, 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.
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.
1.2 Labels on the product
Labels on the product inform about:
●
Personal safety
See "Meaning of safety labels" on page 10.
●
Environment safety
See Table 1-1.
●
Identification of the product
See "Default hostname" on page 22.
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 "Disposing electrical and electronic equipment" on page 208.
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.
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Safety and regulatory information
Warning messages in the documentation
NOTICE
Potential risks of damage. Could result in damage to the supported product or to other
property.
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R&S®NRQ6
2.1.1 Getting started manual
Welcome
Documentation overview
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
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, instrument 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)
●
Certificates
●
Links to useful sites on the Rohde & Schwarz website
2.1.4 Application sheets
Deal with special tasks and their practical solution.
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2.1.5 Tutorials
2.1.6 Instrument security procedures
2.1.7 Basic safety instructions
2.1.8 Data sheets and brochures
Welcome
Documentation overview
Tutorials offer guided examples and demonstrations on operating the R&S NRQ6.
They are provided on the product page of the internet.
Deals with security issues when working with the R&S NRQ6 in secure areas. It is
available for download on the Internet.
Contains safety instructions, operating conditions and further important information.
The printed document is delivered with the R&S NRQ6.
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 current
firmware version, and describe the firmware installation.
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
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2.2 Key features
The R&S NRQ6 frequency selective power sensor sets standards in RF performance
and usability. Outstanding key features are:
●
Combines the advantages of a measurement receiver (dynamic range, linearity &
video bandwidth) and a conventional diode-based or thermal power sensor (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.
Welcome
Key features
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Preparing for use
Choosing the operating site
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...............................................................................................16
● Connecting to a power supply.................................................................................17
● 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 10.
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 "General 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.
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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 interface
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 devices.
Allow sufficient airflow
The R&S NRQ6 has fan openings at both sides of the casing, as shown in Figure 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.
Preparing for use
Connecting to a DUT
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 28.
To connect to the DUT
1. Ensure that the RF connector of your DUT is compatible with the RF connector 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.
See also Chapter 17.1, "Regular checks", on page 207.
3. Insert the RF connector straight into the RF output of your DUT. Take care not to tilt
it.
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Preparing for use
Connecting to a power supply
180
SMART SENSOR TECHNOLOGY
NOTICE! Risk of damaging the center pin of the RF connector. Only rotate the hex
4.
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
NOTICE! Risk of damaging the center pin of the RF connector. Only rotate the hex
1.
nut of the RF connector. Never rotate the R&S NRQ6 itself.
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
NRQ6
Frequency Selective Power Sensor
Sample Clock I/O (Default: 120 MHz)
LAN PoE+
Host
Interface
LO I/0
The power for the R&S NRQ6 is supplied over the LAN PoE+ interface. See also
Chapter 4.3, "LAN PoE+ interface", on page 29.
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 29.
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 19.
● Output of a PoE+ injector:
See Chapter 3.6.1.2, "Setup with a PoE+ injector and a non-PoE+ ethernet
switch", on page 20.
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See Chapter 3.6.1.3, "Setup with a PoE+ injector", on page 21.
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 33.
The suitable interface depends on the controlling host:
●
Computer
LAN interface
USB interface
●
R&S NRX
Host interface
Contents:
● Computer using a LAN connection......................................................................... 18
● Computer using a USB connection.........................................................................23
● R&S NRX base unit.................................................................................................26
Preparing for use
Connecting to a controlling host
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 17
●
Chapter 14.1, "Remote control interfaces and protocols", on page 183
Contents:
● Setup with a PoE+ ethernet switch......................................................................... 19
● Setup with a PoE+ injector and a non-PoE+ ethernet switch................................. 20
● Setup with a PoE+ injector......................................................................................21
● Establishing a connection....................................................................................... 21
● Using hostnames.................................................................................................... 22
● Assigning the IP address........................................................................................ 23
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3.6.1.1 Setup with a PoE+ ethernet switch
1 2
3 4
LAN PoE+
NRQ6
Frequency Selective Power Sensor
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
Sample Clock I/O (Default: 120 MHz)
Host
Interface
LO I/0
Preparing for use
Connecting to a controlling host
5
6
7
1. Connect the [RF] connector of the R&S NRQ6 to the DUT. See Chapter 3.4, "Con-
necting to a DUT", on page 16.
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 21.
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3.6.1.2 Setup with a PoE+ injector and a non-PoE+ ethernet switch
Connecting to a controlling host
1 2
3 4 5
LAN PoE+
NRQ6
Frequency Selective Power Sensor
Sample Clock I/O (Default: 120 MHz)
Host
Interface
LO I/0
8
910
Figure 3-2: Setup with a PoE+ injector and a Non-PoE+ Ethernet switch
Preparing for use
6
7
1 = Signal source (DUT)
2 = R&S NRQ6
3 = RJ.45 Ethernet connector
4, 6, 8 = RJ.45 Ethernet cable
5 = Computer
7 = Non-PoE+ Ethernet switch
9 = PoE+ injector
10 = AC supply
1. Connect the [RF] connector of the R&S NRQ6 to the DUT. See Chapter 3.4, "Con-
necting to a DUT", on page 16.
2. Connect the RJ.45 Ethernet connector of the R&S NRQ6 to the output of the PoE+
injector.
3. Connect the PoE+ injector to a power supply.
4. Connect the input of the PoE+ injector to the non-PoE+ Ethernet switch.
5. Connect the computer to the non-PoE+ Ethernet switch.
6. Establish a connection between the R&S NRQ6 and the network. See Chap-
ter 3.6.1.4, "Establishing a connection", on page 21.
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3.6.1.3 Setup with a PoE+ injector
1 2
LAN PoE+
NRQ6
Frequency Selective Power Sensor
Figure 3-3: Setup with a PoE+ injector
1 = Signal source (DUT)
2 = R&S NRQ6
3 = RJ.45 Ethernet connector
4, 6 = RJ.45 Ethernet cable
5 = Computer
7 = PoE+ injector
8 = AC supply
Sample Clock I/O (Default: 120 MHz)
Host
Interface
LO I/0
Preparing for use
Connecting to a controlling host
3 4 5
6
7
8
1. Connect the [RF] connector of the R&S NRQ6 to the DUT. See Chapter 3.4, "Con-
necting to a DUT", on page 16.
2. Connect the RJ.45 Ethernet connector of the R&S NRQ6 to the output of the PoE+
injector.
3. Connect the PoE+ injector to a power supply.
4. Connect the computer to the input of the PoE+ injector.
5. Establish a connection between the R&S NRQ6 and the network. See Chap-
ter 3.6.1.4, "Establishing a connection", on page 21.
3.6.1.4 Establishing a connection
There are two methods to establish a network connection:
●
R&S NRQ6 and computer are connected to a common network
(infrastructure network).
●
R&S NRQ6 and computer are connected only over the switch
(peer-to-peer network).
In both cases, you can address the R&S NRQ6 as follows:
●
Chapter 3.6.1.5, "Using hostnames", on page 22
●
Chapter 3.6.1.6, "Assigning the IP address", on page 23
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R&S®NRQ6
3.6.1.5 Using hostnames
Preparing for use
Connecting to a controlling host
To set up a network Ethernet connection
1. Connect the R&S NRQ6 to the network or to a single computer.
By default, the R&S NRQ6 is configured to use dynamic TCP/IP configuration
(DHCP) and to obtain the address information automatically.
If both LAN status LEDs are illuminated in green color, the R&S NRQ6 is correctly
connected to the network.
Note: Establishing a connection can take up to 2 minutes per device.
2. If the LAN status LEDs show another state, no connection is possible. For possible
solutions, see:
● Chapter 4.3, "LAN PoE+ interface", on page 29
● Chapter 15.6, "Cannot establish a LAN connection", on page 204
In a LAN that uses a domain name system (DNS) server, you can address each computer or instrument connected in the LAN using its unique hostname instead of the IP
address. The DNS server translates the hostname into the IP address. The hostname
is especially useful when using a DHCP server, as a new IP address can be assigned
each time the instrument is restarted.
The R&S NRQ6 is delivered with a default hostname that you can change.
Default hostname
The default hostname follows the syntax:
<device name>-<serial number>, where:
●
<device name> is the short name of your R&S NRQ6.
For example, the <device name> of an R&S NRQ6 is nrq6.
●
<serial number> is the individual serial number of the R&S NRQ6. The serial
number is printed on the bar code sticker at the rear side of the R&S NRQ6. It is
the third part of the device ID:
ID: 1421.3509K02 - 101441 - Zd
Example:
Serial number of the R&S NRQ6: 101441
Default hostname: nrq6-101441
Serial number
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R&S®NRQ6
Preparing for use
Connecting to a controlling host
Hostname in zero configuration networks, including peer-to-peer networks
The R&S NRQ6 supports zero configuration networking, used in networks without
DHCP server, such as peer-to-peer networks. Thus, you can connect the R&S NRQ6
to a network without setting up services such as dynamic host configuration protocol
(DHCP) and domain name system (DNS), or configuring the network settings manually.
For establishing a connection to the R&S NRQ6, try the default hostname and the
hostname extended with .local as shown in the example below. All communication
for resolving names in the top-level-domain (TLD) .local are defined to be executed
using dedicated local services and ports if no other DNS (domain name server) is
available.
Example:
Default hostname: nrq6-101441
Extended hostname: nrq6-101441.local
3.6.1.6 Assigning the IP address
Depending on the network capabilities, the TCP/IP address information for the
R&S NRQ6 is obtained in different ways:
●
If the network supports dynamic TCP/IP configuration using the dynamic host configuration protocol (DHCP), the address information is assigned automatically.
●
If the network does not support DHCP, the R&S NRQ6 tries to obtain the IP
address via the Zeroconf (APIPA = automatic private IP addressing) protocol. If this
attempt does not succeed or if the R&S NRQ6 is set to use an alternate TCP/IP
configuration, you have to set the IP address manually.
For a description on how to set the IP address manually, see "IP Address"
on page 109.
Identify the R&S NRQ6 using hostnames
In networks using a DHCP server, it is recommended that you address the R&S NRQ6
by its unique hostname, see Chapter 3.6.1.5, "Using hostnames", on page 22.
A hostname is a unique identifier of the R&S NRQ6 that remains permanent as long as
it is not explicitly changed. Hence, you can address an R&S NRQ6 by the same identification, irrespective of whether it is a network or a point-to-point connection.
3.6.2 Computer using a USB connection
You can connect an R&S NRQ6 to a computer using the host interface and control it as
described in Chapter 5, "Operating concepts", on page 33.
Further information:
●
Chapter 14.1, "Remote control interfaces and protocols", on page 183
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R&S®NRQ6
3.6.2.1 Simple USB connection
Preparing for use
Connecting to a controlling host
Contents:
● Simple USB connection.......................................................................................... 24
● R&S NRP‑Z5 sensor hub setup.............................................................................. 25
1
Figure 3-4: Setup with an R&S NRP‑ZKU cable cable
1 = Signal source (DUT)
2 = R&S NRQ6
3 = Host interface connector
4 = R&S NRP‑ZKU cable cable
5 = USB connector
6 = Computer with installed VISA driver or R&S NRP Toolkit
7 = PoE+ injector
8 = AC supply
NRQ6
Frequency Selective Power Sensor
2
Sample Clock I/O (Default: 120 MHz)
3
LAN PoE+
Host
Interface
LO I/0
8
7
5
4
6
1. Connect the R&S NRQ6 to the signal source (DUT). See Chapter 3.4, "Connecting
to a DUT", on page 16.
2. Connect the R&S NRQ6 to the power supply. See Chapter 3.5, "Connecting to a
power supply", on page 17.
3. Connect the R&S NRP‑ZKU cable cable to the host interface connector of the
R&S NRQ6:
a) Insert the screw-lock cable connector of the R&S NRP‑ZKU cable into the host
interface connector. Take care that the guide lug on the left side of the host
interface connector fits into the guide gap of the cable connector.
1
= Guide lug
1
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R&S®NRQ6
3.6.2.2 R&S NRP‑Z5 sensor hub setup
Preparing for use
Connecting to a controlling host
b) To minimize the chance of cross-threading, turn the end cap counterclockwise
until the threads of the end cap align with the threads of the connector.
c) Tighten the union nut carefully without using any force.
4. Connect the USB connector of the R&S NRP‑ZKU cable to the USB host.
► If you want to disconnect the cable from the host interface:
a) Loosen the union nut of the screw-lock cable connector.
b) Remove the cable.
The R&S NRP‑Z5 sensor hub (high-speed USB 2.0) can host up to four R&S NRQ6
power sensors and provides simultaneous external triggering to all connected sensors.
It comes with an external power supply unit, a power cable and a USB cable.
1
2
3 4 5
11
Figure 3-5: Configuration with an R&S NRP‑Z5 sensor hub
6
NRQ6
Frequency Selective Power Sensor
Sample Clock I/O (Default: 120 MHz)
Interface
LO I/0
LAN PoE+
Host
7
8
9
10
1 = External power supply unit
2 = Connect to AC power supply
3 = Connect to computer with USB host interface
4 = Optional: Connect to trigger source
5 = Optional: Connect to triggered device
6 = R&S NRP‑Z5 sensor hub
7 = Signal source (DUT)
8 = R&S NRQ6
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R&S®NRQ6
Preparing for use
Connecting to a controlling host
9 = R&S NRP‑ZK6 cable
10 = PoE+ injector
11 = AC power supply
1. Connect each R&S NRQ6 to:
a) Signal source (DUT), see Chapter 3.4, "Connecting to a DUT", on page 16.
b) Power supply, see Chapter 3.5, "Connecting to a power supply", on page 17.
c) R&S NRP‑Z5 using a R&S NRP‑ZK8 cable cable.
2. Connect the R&S NRP‑Z5 to the computer using a USB cable.
3. Connect the delivered external power supply unit to the R&S NRP‑Z5 and to an AC
supply connector.
4. If you want to use an external trigger source, connect the trigger input of the
R&S NRP‑Z5 to the trigger source using a BNC cable.
5. If you want to use the trigger signal externally, connect the trigger output of the
R&S NRP‑Z5 to the trigger device using a BNC cable.
3.6.3 R&S NRX base unit
You can use an R&S NRX base unit as controlling host. Connect the R&S NRQ6 to the
R&S NRX using the host interface. The R&S NRX supports the configuration of 2
directly connected R&S NRQ6, if enhanced accordingly. For details, see the user manual and the data sheet of the R&S NRX.
The R&S NRX supplies an external reference signal that is provided by the LVDS wire
pair of the 8-pole sensor connector (M12).
Further information:
●
Table 9-2
●
Chapter 5.3, "R&S NRX", on page 40
●
R&S NRX user manual
Setup
NRQ6
Frequency Selective Power Sensor
1
LAN PoE+
Interface
Sample Clock I/O (Default: 120 MHz)
2
Host
LO I/0
3
4
5 6
Figure 3-6: Setup with an R&S
1 = Signal source
2 = R&S NRQ6
3 = Host interface connector
NRX base unit and one R&S NRQ6
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R&S®NRQ6
Preparing for use
Connecting to a controlling host
4 = R&S NRP‑ZK8 cable
5 = Sensor input connector of the R&S NRX
6 = R&S NRX base unit
Use an R&S NRP‑ZK8 cable cable.
1. 8-pin female connector of R&S NRP‑ZK8 cable:
a) Insert the screw-lock cable connector into the host interface of the R&S NRQ6.
b) Tighten the union nut manually.
2. 8-pin male connector of R&S NRP‑ZK8 cable:
a) Insert this connector into one of the sensor ports of the R&S NRX.
► If you want to disconnect the cable from the host interface of the R&S NRQ6:
a) Loosen the union nut of the screw-lock cable connector.
b) Remove the cable.
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R&S®NRQ6
R&S NRQ6 tour
RF connector
4 R&S NRQ6 tour
This chapter provides an overview of the available connectors and LEDs of the
R&S NRQ6.
1 2
3
10
5
6
7
8
9
Figure 4-1: R&S NRQ6 frequency selective power sensor
1 = RF connector, see Chapter 4.1, "RF connector", on page 28
2, 10 = Fan openings, see Chapter 4.9, "Fan openings", on page 32
3 = Status display, see Chapter 4.2, "Status information", on page 29
4 = LAN interface, see Chapter 4.3, "LAN PoE+ interface", on page 29
5 = Host interface, see Chapter 4.4, "Host interface", on page 31
6 = Local oscillator connector, see Chapter 4.8, "Local oscillator I/O (LO)", on page 32
7 = Sampling clock connector, see Chapter 4.7, "Clock I/O (CLK)", on page 32
8 = Trigger connector, see Chapter 4.5, "Trigger 2 I/O (TRIG2)", on page 31
9 = Reference clock, see Chapter 4.6, "Reference I/O (REF)", on page 31
4
4.1 RF connector
See (1) in Figure 4-1.
The male N connector is used to connect the R&S NRQ6 to the device under test
(DUT) or a signal generator, see Chapter 3.4, "Connecting to a DUT", on page 16.
28User Manual 1178.3692.02 ─ 08
R&S®NRQ6
R&S NRQ6 tour
LAN PoE+ interface
For maximum measurement accuracy, tighten the RF connector using a torque wrench
with the recommended nominal torque. For details, see "To connect to the DUT"
on page 16.
4.2 Status information
See (2) in Figure 4-1.
The status LED shows the state of the R&S NRQ6 by color and blinking frequency.
Table 4-1: Possible states
Color Illumination State
White Steady Idle
The sensor performs no measurement and is ready
for use.
White Blinking Firmware update is in progress.
Yellow Steady Waiting for trigger state.
Green Steady Measurement is running.
Turquoise blue Steady Zeroing is in progress.
Red Slow blinking Static error
Red Fast blinking Critical static error
Further information:
●
Chapter 15, "Troubleshooting", on page 198.
4.3 LAN PoE+ interface
See (3) in Figure 4-1.
1 Gigabit LAN interface (1000 Base-T). The assignment of the RJ.45 CAT5 connector
supports twisted-pair UTP/STP cables in a star configuration (UTP stands for "unshielded twisted pair", and STP for "shielded twisted pair").
Note: If this state occurs after a firmware update,
the update was not successful.
See "Sensor blinks red after firmware update"
on page 204.
Electromagnetic interference (EMI) can affect the measurement results. To avoid any
impact, use category 5 cables or better.
The power for the R&S NRQ6 is supplied over the LAN PoE+ interface.
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R&S®NRQ6
R&S NRQ6 tour
LAN PoE+ interface
The LAN PoE+ interface also connects the R&S NRQ6 to a local area network (LAN)
for remote control, remote operation and data transfer.
R&S NRQ6 requires PoE+
The electrical power for the R&S NRQ6 is provided by PoE+, power over Ethernet. The
IEEE 802.3at standard specifies 25.4 W per port. For details, see Chapter 3.5, "Con-
necting to a power supply", on page 17.
The power delivery at a USB host interface is not sufficient to run the R&S NRQ6 properly. Therefore, you cannot use it as power supply for the R&S NRQ6.
1
2
3
Figure 4-2: LAN [PoE+] interface
1 = Network status LED
2 = LAN reset button
3 = PoE+ status LED
Network status LED
See (1) in Figure 4-2.
Shows whether the LAN connection to the network is established properly or not.
Color State
Green The power sensor is correctly connected to the network.
It has been assigned a valid IP address, either manually or via DHCP.
Red The power sensor is not connected to the network correctly.
Either the connection is erroneous or the sensor has not been assigned a valid IP address
yet.
PoE+ status LED
See (2) in Figure 4-2.
Shows whether the R&S NRQ6 is correctly powered over PoE+ or not.
Color State
Green The sensor is powered over PoE+. You can operate it using the Ethernet interface.
No light No PoE+ power is present.
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