®
R&S
NRT-Z14/44
Directional Power Sensor
Getting Started
(>[äP2)
1443863202
Version 02
This document describes the following directional power sensor models and
accessories:
●
R&S®NRT-Z14 (1444.0006K02)
●
R&S®NRT-Z44 (1444.0012K02)
●
R&S®NRT-Z5 (1400.6909K02)
© 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.
All other trademarks are the properties of their respective owners.
1443.8632.02 | Version 02 | R&S®NRT-Z14/44
Throughout this manual, products from Rohde & Schwarz are indicated without the ® symbol, e.g.
R&S®NRT-Z14 is indicated as R&S NRT-Z14.
R&S®NRT-Z14/44
Contents
Contents
1 Safety and regulatory information....................................... 5
1.1 Safety instructions................................................................................5
1.2 Labels on the product.......................................................................... 7
1.3 Warning messages in the documentation..........................................7
2 Welcome................................................................................. 9
2.1 Documentation overview..................................................................... 9
2.1.1 Getting started manual............................................................................9
2.1.2 User manual............................................................................................9
2.1.3 Tutorials.................................................................................................. 9
2.1.4 Instrument security procedures.............................................................10
2.1.5 Printed safety instructions.....................................................................10
2.1.6 Data sheets and brochures...................................................................10
2.1.7 Application notes, application cards, white papers, etc........................ 10
2.2 Key features........................................................................................ 10
3 Preparing for use................................................................. 13
3.1 Unpacking and checking....................................................................13
3.2 Choosing the operating site.............................................................. 13
3.3 Considerations for test setup............................................................ 14
3.4 Connecting to source and load......................................................... 14
3.5 Connecting to a computer or base unit............................................ 16
3.5.1 Computer.............................................................................................. 16
3.5.2 Base unit............................................................................................... 17
3.5.3 Legacy setups.......................................................................................18
4 Power sensor tour............................................................... 19
3Getting Started 1443.8632.02 ─ 02
R&S®NRT-Z14/44
4.1 RF connectors.....................................................................................19
4.2 Host interface...................................................................................... 20
4.3 Power handling capacity....................................................................20
4.4 R&S NRT‑Z5 USB interface adapter.................................................. 20
Contents
5 Operating concepts............................................................. 23
5.1 Base unit..............................................................................................23
5.2 R&S Virtual NRT..................................................................................24
5.3 Remote control....................................................................................26
5.3.1 Remote control using R&S Virtual NRT................................................ 26
5.3.2 Remote control using terminal program................................................27
Index..................................................................................... 33
4Getting Started 1443.8632.02 ─ 02
R&S®NRT-Z14/44
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 NRT‑Zxx directional power sensor is intended for power and reflection
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 continuous monitoring of transmitter systems and power
measurements with digital modulation. A profound knowledge of the intended
application and test setup is required.
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 5. 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.
5Getting Started 1443.8632.02 ─ 02
R&S®NRT-Z14/44
Use the product only for its intended use and within its performance limits. Intended use and limits are described in the product documentation such as the data
sheet, manuals and the printed "Safety Instructions". If you are unsure about the
appropriate use, contact Rohde & Schwarz customer service.
Using the product requires specialists or specially trained personnel. These users
also need sound knowledge of at least one of the languages in which the user
interfaces and the product documentation are available.
Reconfigure or adjust the product only as described in the product documentation
or the data sheet. Any other modifications can affect safety and are not permitted.
Never open the casing of the product. Only service personnel authorized by
Rohde & Schwarz are allowed to repair the product. If any part of the product is
damaged or broken, stop using the product. Contact Rohde & Schwarz customer
service at https://www.rohde-schwarz.com/support.
Safety and regulatory information
Safety instructions
Operating the product
Only use the product indoors. The product casing is not waterproof.
Observe the ambient conditions such as altitude, operating temperature and climatic loads; see the data sheet.
Connecting directional power sensors
During the measurement, the RF power flow can be high. Connect both RF connectors tightly to avoid power leakage. Contact with leaking RF power can cause
electric shock and severe skin burns. Take the following measures for your safety:
●
Before switching on the RF power of your test setup, make sure that both RF
ports of the power sensor are connected securely as described in the product
documentation.
●
Do not touch the RF ports when the RF power is switched on.
●
Never exceed the permissible continuous power that is shown in the diagram
on the back of the power sensor.
●
Before disconnecting one or both RF ports of the power sensor, switch off the
RF power.
Meaning of safety labels
Safety labels on the product warn against potential hazards.
6Getting Started 1443.8632.02 ─ 02
R&S®NRT-Z14/44
Safety and regulatory information
Warning messages in the documentation
Potential hazard
Read the product documentation to avoid personal injury or product damage.
1.2 Labels on the product
Labels on the product inform about:
●
Personal safety
See "Meaning of safety labels" on page 6.
●
Environment safety
See Table 1-1.
●
Identification of the product
The front label of the power sensor contains the serial number that uniquely
identifies the power sensor.
●
Power handling capacity
See "Signal input and output levels" on page 14.
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.
CAUTION
Potentially hazardous situation. Could result in minor or moderate injury if not
avoided.
NOTICE
Potential risks of damage. Could result in damage to the supported product or to
other property.
7Getting Started 1443.8632.02 ─ 02
R&S®NRT-Z14/44
Safety and regulatory information
Warning messages in the documentation
8Getting Started 1443.8632.02 ─ 02
R&S®NRT-Z14/44
Documentation overview
Welcome
2 Welcome
This chapter provides an overview of the user documentation and an introduction
to the R&S NRT-Zxx power sensor.
2.1 Documentation overview
This section provides an overview of the R&S NRT-Zxx user documentation.
Unless specified otherwise, you find the documents at:
www.rohde-schwarz.com/manual/nrt-z_nap-z
Further documents are available at:
www.rohde-schwarz.com/product/nrt-z_nap-z
2.1.1 Getting started manual
Introduces the R&S NRT-Zxx and describes how to set up and start working with
the product. Includes basic operations and general information, e.g. safety
instructions, etc. A printed version is delivered with the power sensor.
2.1.2 User manual
Contains the description of all R&S NRT-Zxx functions. It also provides an introduction to remote control, a complete description of the remote control commands
with programming examples, and information on maintenance and interfaces.
Includes the contents of the getting started manual.
2.1.3 Tutorials
Tutorials offer guided examples and demonstrations on operating the R&S NRTZxx. They are provided on the product page of the internet.
9Getting Started 1443.8632.02 ─ 02
R&S®NRT-Z14/44
Welcome
Key features
2.1.4 Instrument security procedures
Deals with security issues when working with the R&S NRT-Zxx in secure areas.
It is available for download on the Internet.
2.1.5 Printed safety instructions
Provides safety information in many languages. The printed document is delivered with the product.
2.1.6 Data sheets and brochures
The data sheet contains the technical specifications of the R&S NRT-Zxx. It also
lists the firmware applications and their order numbers, and optional accessories.
The brochure provides an overview of the instrument and deals with the specific
characteristics.
www.rohde-schwarz.com/brochure-datasheet/nrt-z_nap-z
2.1.7 Application notes, application cards, white papers, etc.
These documents deal with special applications or background information on
particular topics.
www.rohde-schwarz.com/application/nrt-z_nap-z
2.2 Key features
The R&S NRT-Zxx power sensors support the following measurements:
Average power (RMS value)
Returns the average value of the power for any type of measurement signal —
modulated, unmodulated or several carriers.
10Getting Started 1443.8632.02 ─ 02
R&S®NRT-Z14/44
Peak envelope power (PEP) and crest factor
Both parameters provide information on the peak power of a modulated envelope
and describe the overdrive characteristics of transmitter output stages. The power
sensor outputs the result of the crest factor measurement as the ratio of peak
envelope power (PEP) to average power. In the graphical user interface of the
base unit or the R&S Virtual NRT, the crest factor is displayed as a logarithmic
ratio in dB. Measurements are performed using a video bandwidth that is adjustable in several steps, so that even short-time and high-power peaks can be determined.
Average burst power
Used to measure modulated and unmodulated bursts based on the average
power and the duty cycle. The duty cycle can be defined or determined automatically by the power sensor.
Welcome
Key features
Complementary cumulative distribution function (CCDF)
Measures the probability of the peak envelope power exceeding a preset threshold so that the amplitude distribution of signals with an unknown envelope can be
determined.
Voltage standing wave ratio (VSWR), reflection coefficient, return loss
These parameters provide information on the matching of the load. The power
sensor derives these parameters from the average power measurement in forward and reverse direction.
11Getting Started 1443.8632.02 ─ 02
Loading...