R&S SZU100A User manual

R&S®SZU100A
IQ Upconverter
58.32-64.8 GHz
Manual
Manual
Version 04
1425306102
(>INË2)

This document describes the R&S®SZU100A, stock. no. 1425.3003.02 and its
options:
●R&S®SZU-B1066 (1425.3110.02)
© 2019 Rohde & Schwarz GmbH & Co. KG
Mühldorfstr. 15, 81671 München, Germany
Phone: [phone] - 0
Fax: [phone]
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.
1425.3061.02 | Version 04 | R&S®SZU100A
The following abbreviations are used throughout this manual: R&S®SZU100A is abbreviated as R&S SZU,
the R&S®SMW200A is abbreviated as R&S SMW, the R&S®ZCTW is abbreviated as R&S ZCTW.

Contents
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Contents
1 Safety Information................................................................. 5
2 Documentation Overview......................................................6
3 About This Manual.................................................................7
4 Welcome to the R&S SZU..................................................... 8
5 Preparing for Use.................................................................10
5.1 Unpacking and Checking the R&S SZU............................................10
5.2 Putting into Operation........................................................................ 11
5.3 Adjusting the Feet...............................................................................12
6 Instrument Tour................................................................... 13
6.1 Front View............................................................................................13
6.2 Rear View.............................................................................................14
6.2.1 Power Supply Connector...................................................................... 15
6.2.2 IQ Input Connectors..............................................................................16
6.2.3 Status LED............................................................................................16
6.2.4 USB Interface........................................................................................17
6.2.5 LO In/Out Connectors........................................................................... 17
6.2.6 Trigger Input/Output Connector............................................................ 17
7 Startup.................................................................................. 18
7.1 System Requirements........................................................................ 19
7.2 Measurement Setup............................................................................20
7.3 Starting Up...........................................................................................22
7.4 Running Internal Adjustments...........................................................30
7.5 Behavior of the R&S SMW When Working with the R&S SZU........ 32

Contents
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8 Remote Control of the R&S SZU........................................ 36
Glossary: List of Frequently Used Terms and Abbrevia-
tions...................................................................................... 38
Index..................................................................................... 40

Safety Information
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1 Safety Information
The product documentation helps you use the R&S SZU safely and efficiently.
Follow the instructions provided here and in the printed "Basic Safety Instruc-
tions". Keep the product documentation nearby and offer it to other users.
Intended use
The R&S SZU is intended for the development, production and verification of
electronic components and devices in industrial, administrative, and laboratory
environments. Use the R&S SZU only for its designated purpose. Observe the
operating conditions and performance limits stated in the data sheet.
Where do I find safety information?
Safety information is part of the product documentation. It warns you about the
potential dangers and gives instructions how to prevent personal injuries or dam-
age caused by dangerous situations. Safety information is provided as follows:
●The printed "Basic Safety Instructions" provide safety information in many lan-
guages and are delivered with the R&S SZU.
●Throughout the documentation, safety instructions are provided when you
need to take care during setup or operation.

Documentation Overview
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2 Documentation Overview
This section provides an overview of the R&S SZU user documentation. You find
it on the product page of the R&S SZU, see www.rohde-schwarz.com/manual/
szu100a. The User Manual of the R&S SMW is provided at www.rohde-
schwarz.com/product/SMW200A/User Manual.
The user documentation for the R&S SZU consists of the following parts:
Manual
Introduces the R&S SZU and describes how to set up and start working with the
product. Includes basic operation and general information, e.g. safety instruc-
tions, etc. A printed version is delivered with the instrument.
Online help
The online help offers quick, context-sensitive access to the complete information
for the base unit and the software options directly on the R&S SMW.
General safety instructions
The brochure delivered with the instrument contains basic safety instructions and
operating conditions and further important information.
Data sheet and brochure
The data sheet contains the technical specifications of the R&S SZU. It also lists
the options and their order numbers and optional accessories.
A brochure provides an overview of the instrument and deals with the specific
characteristics.
See www.rohde-schwarz.com/brochure-datasheet/szu100a.
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.
The open source acknowledgment document provides verbatim license texts of
the used open source software.

About This Manual
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3 About This Manual
This user manual which you have received as printed book with your instrument,
provides all the specific information about the R&S SZU. The instrument functions
and settings concerning the R&S SMW are described in the main R&S SMW user
manual.
The main focus is on the tasks required for setting up the measurement system.
The following topics are included:
●Welcome to the R&S SZU IQ Upconverter
Introduction to and getting familiar with the instrument.
●Preparing for use
Basic steps to be taken when setting up the R&S SZU IQ Upconverter for the
first time.
●Startup
Description on how to take the R&S SZU IQ Upconverter into operation.
●Remote control
Remote control commands related to the R&S SZU, see the R&S SMW user
manual.
●Glossary
Alphabetical list of frequently used terms and abbreviations

Welcome to the R&S SZU
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4 Welcome to the R&S SZU
The Rohde & Schwarz R&S SZU is an IQ upconverter designed for the 60 GHz
frequency band. These frequencies are used in modern high-performance wire-
less communication standards, e.g. IEEE802.11 ad. Operating in the 60 GHz fre-
quency band enables devices to communicate at multi-gigabit speed, with data
transfer rates of several Gbit/s.
Key features
The R&S SZU IQ Upconverter features:
●Compact broadband upconverter providing 57 GHz to 66 GHz frequency
●Power output of at least 5 dBm for over the air (OTA) RF measurements and
tests
●Adjustable output power in the range +5 dBm to -80 dBm, with integrated level
detector
●RF output signal at the waveguide port
●Support of common mountable test port adapters
●High-level stability and harmonic suppression
●Compatible to all R&S SMW frequency options
●Support of the R&S SMW output level user correction
●Fully calibrated at the waveguide port
●Control via user interface of the R&S SMW
●Small size, easy usage, and operation in any position possible
About the R&S SZU IQ Upconverter
The R&S SZU generates a vector-modulated signal by converting the baseband
signal to the output frequency range of 58.32 GHz to 64.8 GHz (center fre-
quency).
The R&S SZU receives the differential or single ended baseband signals (I/Q),
and an LO signal in the range of 1.944 GHz to 2.16 GHz from the R&S SMW.
The USB host interface is the communication port of the R&S SZU to the
R&S SMW. As external instrument, the R&S SZU is configured in the "System
Configuration" dialog of the R&S SMW, and indicated by a symbol in the GUI.
Once connected, the R&S SMW reads the calibration data of the R&S SZU, and

Welcome to the R&S SZU
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adjusts the frequency and level values to the output values of this downstream
instrument.
Thus the R&S SMW controls the R&S SZU almost entirely. You only need to
select single ended or differential mode for the baseband connection. It is recom-
mended that you work in differential mode due to better common mode noise
suppression over the single ended connection. When you work with two
R&S SZUs on one R&S SMW, you must work in single ended mode.
The setting parameters in the R&S SMW remain the same.

Preparing for Use
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5 Preparing for Use
This section explains how to take an R&S SZU IQ Upconverter into operation. It
includes the controls and connectors of the R&S SZU, and provides all the infor-
mation necessary for connection.
For information on the equipment required for a basic test setup, see Chapter 7.1,
"System Requirements", on page 19.
5.1 Unpacking and Checking the R&S SZU
To remove the instrument from its packaging and to check the equipment for com-
pleteness, proceed as follows:
1. Unpack the R&S SZU and the other contents of the shipping container.
2. Check the equipment for completeness using the delivery list.
3. Remove the protective cap from the waveguide port at the front of the
R&S SZU. Inspect the instrument carefully, to make sure that it has no dam-
age from shipment.
If there is any damage, immediately contact the freight forwarder, who has
delivered the instrument.
Packaging material
It is recommended that you retain the original packaging material. If the
R&S SZU needs to be transported or shipped later, you can use the mate-
rial to prevent control elements and connectors from being damaged.
Equipment returned or sent in for repair must be packed in an appropriate
packaging, if the original packaging is no longer available.
Also use the packaging material for storage of the instrument and the
accessories.
Unpacking and Checking the R&S SZU

Preparing for Use
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5.2 Putting into Operation
The IQ upconverter is designed for use under laboratory conditions.
General ambient conditions:
●The ambient temperature and humidity must be in the ranges specified for
operation and for compliance with specifications (see the data sheet).
●Condensed humidity can cause serious defects to the hardware. To avoid
condensed humidity, keep the warm-up time for the R&S SZU to adjust to the
ambient temperature.
●All ventilation openings must be unobstructed.
Risk of instrument and DUT damage
To avoid damage of electronic components of the DUT and the R&S SZU,
protect the operating site against electrostatic discharge (ESD).
Putting into Operation

Preparing for Use
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5.3 Adjusting the Feet
The R&S SZU has four adjustable feet you can mount at each side of the unit.
Adjusting the Feet

Instrument Tour
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6 Instrument Tour
6.1 Front View
Test port adapter (waveguide port)
At the front, the R&S SZU covers the interface to the DUT, that is the output of the
RF signal.
Table 6-1: R&S SZU IQ Upconverter front views
R&S SZU with standard WR15
waveguide flange, without any
adapter
R&S SZU with test port
adapter
R&S SZU with waveguide to
V-connector adapter
To avoid damage as a result of wear and tear of the waveguide port, it is recom-
mended that you mount a test port adapter for the corresponding frequency band.
The precision waveguide flange of the test port adapter is equipped with two
alignment pins and two holes that receive the alignment pins of the DUT. Two
additional holes in the middle allow you to insert additional alignment of pins that
are included. Use the extra pins, when the flange of the DUT provides the corre-
sponding holes. In particular, if the DUT has thin pins, these additional pins
improve the alignment and stability of the connection.
Front View

Instrument Tour
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Figure 6-1: Assignment of the test port adapter
1 = Hole for pin of the DUT
2 = Hole for additional pin
3 = Alignment pin
Refer to the data sheet for more details on the type of waveguide port.
Mounting the test port adapter
Mount the selected adapter to the waveguide port of the instrument using the
delivered screws and the special torque wrench for waveguide flange screws.
The R&S ZCTW (order no. 1175.2014.02) is especially designed for these tasks.
Figure 6-2: Recommended torque wrench R&S ZCTW
6.2 Rear View
The rear panel of the R&S SZU provides the connectors and control elements
described below:
●Power Supply Connector
●IQ Input Connectors
●Status LED
●USB Interface
●LO In/Out Connectors
●Trigger Input/Output Connector
Rear View

Instrument Tour
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Figure 6-3: Rear view of the R&S SZU
1 = Power supply connector
2 = IQ input connectors
3 = Status LED
4 = USB interface
5 = LO signal input and output
6 = Trigger connector
6.2.1 Power Supply Connector
Connection for the DC power supply (Figure 6-3, (1)).
The IQ upconverter is supplied by an external DC power supply. It supports the
AC input voltages between 100 V to 240 V and frequencies between 50 Hz to
60 Hz.
Rear View

Instrument Tour
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Shock hazard
The input voltage and current must not exceed the maximum values
according to the labeling or the data sheet. It is recommended that you use
the included power supply unit for the operation of the R&S SZU.
When other than the included power supply is used to supply the equipment
with DC safety extra low voltage (SELV), the requirement for strengthened /
double insulation in line with DIN/EN/IEC 61010 (UL61010, CAN CSA
C22.2 No. 61010) or DIN/EN/IEC 60950 (UL60950, CAN CSA C22.2 No.
60950) must be met.
6.2.2 IQ Input Connectors
Input connectors for the single ended (I/Q) or differential (I/Q, I/Q BAR) baseband
signal (Figure 6-3, (2)).
The I/Q input connectors receive the single-ended signal, or the positive signal
components of the differential signal. The I/Q BAR connectors receive the nega-
tive signal components of the differential signal.
6.2.3 Status LED
Indicates the instrument status (Figure 6-3, (3)).
Table 6-2: The status of the R&S SZU indicated by the color of LED
LED R&S SZU status Description
off Off R&S SZU is powerless.
on Standby Controller is running, all analog circuity are pow-
ered down.
blinking (3 Hz) Booting or busy Controller is booting or USB transfer is running.
on RF Off R&S SZU is ready for operation with RF deactiva-
ted.
on RF On R&S SZU is ready for operation with RF signal
activated.
blinking once Trigger received LED switches off for 200 µs when an external trig-
ger event occurred.
Rear View

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LED R&S SZU status Description
on Internal error E.g. over temperature, power failure, fan failure.
blinking (6Hz) External error E.g. LO level out of range.
6.2.4 USB Interface
Universal serial bus (USB) interface of type B (Figure 6-3, (4)). This port is used
to communicate with the host instrument, the R&S SMW.
6.2.5 LO In/Out Connectors
Connectors for RF signal input and output (Figure 6-3, (5)). These connectors are
SMA coaxial connectors with 50 Ohm impedance. LO In receives the LO signal
from the R&S SMW, and LO Out is intended for future use, e.g. to forward the LO
signal when using multiple R&S SZU in a daisy chain.
Risk of instrument damage
The RF input power at the connector LO In must not exceed the maximum
values specified in the data sheet.
6.2.6 Trigger Input/Output Connector
Connector for an optional trigger signal (Figure 6-3, (6)). The trigger connector is
an SMA coaxial connector with 50 Ohm impedance.
Rear View

Startup
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7 Startup
This section explains the required steps and components for starting up with
R&S SZU. It describes how to connect the IQ upconverter with the R&S SMW,
what you have to observe and how to configure the system in the R&S SMW.
Risk of instrument damage during operation
An unsuitable operating site or test setup can damage the instrument and
connected devices. Make sure that the following operating conditions are
met, before you switch on the instrument:
●All fan openings are unobstructed and the airflow perforations are unim-
peded. The recommended distance from the wall is 10 cm.
●The instrument is dry and shows no sign of condensation.
●The instrument is adjusted to the ambient temperature, i.e. the warm-up
time was kept.
●The ambient temperature and humidity do not exceed the ranges speci-
fied in the data sheet.
●Signal levels at the input connectors are all within the specified ranges.
The R&S SZU IQ Upconverter is designed and tested in accordance with the EC
certificate of conformity and has left the manufacturer’s plant in a condition fully
complying with safety standards.
To maintain this condition and to provide safe operation, observe all instructions
and warnings given in the following description.
RF input power
The RF input power at the connector LO In must not exceed the maximum values
quoted in the data sheet.
The R&S SZU is operated only in combination with the R&S SMW, which adjusts
the LO signal level at any time to the optimum for the R&S SZU. Note, that the
recommended firmware versions are installed on both instruments.

Startup
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Protection of waveguide flanges
Protect the waveguide flanges of the IQ upconverter against mechanical damage.
Always use a torque wrench to tighten the screws of the waveguide flanges.
Shield the waveguides from dust and moisture, and avoid scratching the contact
surfaces. We recommend that you use a test port adapter.
When the IQ upconverter is not in use, leave the test port adapter mounted and
attach one of the included protective caps to the adapter.
Avoid heavy shocks
Heavy shocks can damage the hardware of the IQ upconverter.
For shipping or storing the device, make sure that it is packed with shockproof
packaging materials in a sturdy cardboard box of suitable size, see also "Packag-
ing material" on page 10.
7.1 System Requirements
To operate an IQ upconverter, you need:
●An R&S SZU IQ Upconverter.
●The R&S SMW as signal source, which can generate the local oscillator signal
within the frequency range of your R&S SZU and a level as specified in the
data sheet.
●A test port adapter, if necessary.
●Cables set:
– Four I/Q cables, included
– An RF cable, included
– The USB cable, included
– A trigger cable, optionally
System Requirements

Startup
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Electromagnetic interference (EMI) affects the measurement results
To suppress generated electromagnetic interference:
●Only use the enclosed cables set, as the R&S SZU has been calibrated
with these cables.
You can find out the corresponding cable set by the serial number,
which is the same as the serial number of the R&S SZU.
●Always terminate open cable ends:
– Terminate the waveguide output with 50 Ohm.
If it is not possible to terminate the output with 50 Ohm, leave it
open.
– Instead of terminating with 50 Ohm, you can connect a wideband
power sensor of the R&S NRPxx series, which also provides a good
termination.
●Use only the USB cable included.
●Note the EMC classification in the data sheet.
7.2 Measurement Setup
This section provides the first steps for putting the R&S SZU into operation. The
startup also comprises the access to the settings made in the R&S SMW.
Risk of RF connector and cable damage
Excessive tightening of the connectors can damage the cables and connec-
tors. Too weak tightening leads to inaccurate results.
Always use the torque wrench suitable for this type of connector, see
"Mounting the test port adapter" on page 14.
The figure shows the basic test setup of an application with the R&S SZU IQ
Upconverter. The R&S SMW controls the R&S SZU via USB. The R&S SMW also
provides the analog baseband signal, and a trigger signal optionally. The
R&S SZU transmits the upconverted I/Q signal to the antenna box (DUT).
Measurement Setup