Rohde & Schwarz R&S NGU411 User manual

R&S®NGU
Source Measure Units
Getting Started
1179247702
Version 03
(;ÝHÛ2)
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This manual describes the following R&S®NGU models with firmware version
1.00 and higher:
●R&S®NGU201 2-QUADRANT SMU (3639.3763.02)
●R&S®NGU401 4-QUADRANT SMU (3639.3763.03)
© 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.
1179.2477.02 | Version 03 | R&S®NGU
Throughout this manual, products from Rohde & Schwarz are indicated without the ® symbol, e.g.
R&S®NGU are indicated as R&S NGU.

Contents
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Contents
1 Safety information................................................................. 5
2 Korea certification class A....................................................6
3 Documentation overview...................................................... 7
3.1 Manuals..................................................................................................7
3.2 Data sheet..............................................................................................7
3.3 Calibration certificate........................................................................... 8
3.4 Release notes, open source acknowledgment.................................. 8
4 Welcome to R&S NGU........................................................... 9
5 Putting into operation......................................................... 10
5.1 Safety................................................................................................... 12
5.2 Intended operation..............................................................................13
5.3 Unpacking and checking the instrument..........................................14
5.4 Setting up the instrument.................................................................. 16
5.4.1 Bench operation....................................................................................16
5.4.2 Rack mounting...................................................................................... 16
6 Instrument tour.................................................................... 17
6.1 Overview of controls.......................................................................... 17
6.1.1 Front panel............................................................................................17
6.1.2 Rear panel............................................................................................ 19
6.2 Switching on the instrument..............................................................22
7 Trying out the instrument................................................... 24
7.1 Setting the output voltage and current.............................................24
7.2 Activating the channel output........................................................... 24

Contents
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8 Maintenance and support................................................... 26
8.1 Maintenance........................................................................................ 26
8.2 Contacting customer support............................................................26
Index..................................................................................... 28

Safety information
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1 Safety information
The product documentation helps you use the R&S NGU 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 NGU is intended for the development, production and verification of
electronic components and devices in industrial, administrative, and laboratory
environments. Use the R&S NGU 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 NGU.
●Throughout the documentation, safety instructions are provided when you
need to take care during setup or operation.

Korea certification class A
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2 Korea certification class A
이 기기는 업무용(A급) 전자파 적합기기로서 판매자 또는 사용자는 이 점을 주의하
시기 바라며, 가정외의 지역에서 사용하는 것을 목적으로 합니다.

Documentation overview
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3 Documentation overview
This section provides an overview of the R&S NGU user documentation.
3.1 Manuals
You find the documents on the R&S NGU product page at:
www.rohde-schwarz.com/manual/ngu
Getting started
Introduces the R&S NGU source measure units and describes how to set up and
start working with the instrument. The printed document is delivered with the
instrument.
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 and
instrument interfaces. Includes the contents of the getting started manual.
The online version of the user manual provides the complete contents for immedi-
ate display on the internet.
Basic safety instructions
Contains safety instructions, operating conditions and further important informa-
tion. The printed document is delivered with the instrument.
3.2 Data sheet
The datasheet contains the technical specifications of the R&S NGU source mea-
sure units. It also lists all options with their order numbers and accessories.
See www.rohde-schwarz.com/brochure-datasheet/ngu
Data sheet

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3.3 Calibration certificate
The document is available on https://gloris.rohde-schwarz.com/calcert. You need
the device ID of your instrument, which you can find on a label on the rear panel.
3.4 Release notes, open source acknowledgment
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. It can also be read directly on the instrument.
See www.rohde-schwarz.com/firmware/ngu.
Release notes, open source acknowledgment

Welcome to R&S NGU
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4 Welcome to R&S NGU
The single source measure units are based on a classical transformer concept
with linear regulators. This concept allows the instrument to achieve highest accu-
racy and lowest residual ripple.
Multi-purpose protection functions are available which you can set separately,
such as overcurrent protection (OCP), overvoltage protection (OVP) and over-
power protection (OPP). If such a limit is reached, the affected output is automati-
cally turned off and an indicator icon ( , , ) blinks on the display.
Additionally, the R&S NGU is protected with overtemperature protection (OTP).
This safety feature protects the R&S NGU from overheating. When the tempera-
ture in the source measure unit exceeds the OTP limit, the output is automatically
cut off.
The Arbitrary function allows a freely definable voltage and current sequences
with a timeframe as short as 100 µs. It allows varying the voltage or current dur-
ing a test sequence, for example to simulate different charging conditions of a
battery. With "Ramp" function, the R&S NGU provides the operating condition to
ramp up the supply voltage within a defined timeframe of 10 ms to 10 s.
All R&S NGU source measure units are equipped with a color TFT display (800
pixels x 480 pixels) and enhanced with touch input capability. The R&S NGU can
be remotely controlled via USB, LAN (LXI) interface and optional GPIB option.
The digital I/O interface installed at the rear panel is activated with an option, it
allows a single trigger-in signal to control multi trigger-out signals on the source
measure unit, providing many possibilities to control outputs and associated devi-
ces in the event when a trigger occurs.
The user manual contains description of the functionalities that the instrument
provides. The latest version is available for download at the product homepage
(http://www.rohde-schwarz.com/product/ngu).

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5 Putting into operation
This chapter describes how to set up the R&S NGU source measure units for the
first time.
Risk of injury due to disregarding safety information
Observe the information on appropriate operating conditions provided in the
data sheet to prevent personal injury or damage to the instrument. Read
and observe the basic safety instructions provided with the instrument, in
addition to the safety instructions in the following sections. In particular:
●Do not open the instrument casing.
Risk of instrument damage due to inappropriate operating conditions
Specific operating conditions are required to ensure accurate measure-
ments and to avoid damage to the instrument. Observe the information on
appropriate operating conditions provided in the basic safety instructions
and the instrument's data sheet.
Instrument damage caused by electrostatic discharge
Electrostatic discharge (ESD) can damage the electronic components of the
instrument and the device under test (DUT). Electrostatic discharge is most
likely to occur when you connect or disconnect a DUT or test fixture to the
instrument's test ports. To prevent electrostatic discharge, use a wrist strap
and cord and connect yourself to the ground, or use a conductive floor mat
and heel strap combination.

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Risk of instrument damage during operation
An unsuitable operating site or test setup can cause damage to the instru-
ment and the connected devices. Ensure the following operating conditions
before you switch on the instrument:
●The instrument is dry and shows no sign of condensation
●The instrument is positioned as described in Chapter 5.4.1, "Bench
operation", on page 16
●The ambient temperature does not exceed the range specified in the
data sheet
●Signal levels at the input connectors are all within the specified ranges
●Signal outputs are correctly connected and not overloaded
EMI impact on measurement results
Electromagnetic interference (EMI) may affect the measurement results.
To suppress generated electromagnetic interference (EMI):
●Use suitable shielded cables of high quality. For example, use double-
shielded RF and LAN cables.
●Always terminate open cable ends.
●Note the EMC classification in the data sheet.

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5.1 Safety
Recommendations on secure operation
The R&S NGU is designed to operate at local workplaces or in secured net-
works (LAN). It should not be accessible from the internet, because of a
potential security risk, e.g. attackers could misuse or damage your device.
Please always install the latest firmware.
It is highly recommended that you work closely with your IT department or
system administrator to ensure compliance with your company policies
when connecting devices to your company's network.
This instrument was built in compliance with DIN EN 61010-1, safety regulations
for electrical instruments, control units and Iaboratory equipment.
It has been tested and shipped from the plant in safe condition. It is also in com-
pliance with the regulations of the European standard EN 61010-1 and the inter-
national standard IEC 61010-1.
To maintain this condition and ensure safe operation, you must observe all
instructions and warnings given in this user manual. Casing, chassis and all mea-
suring ports are connected to a protective earth conductor. The instrument is
designed in compliance with the regulations of protection class I.
For safety reasons, the instrument may only be operated with authorized safety
sockets. The power cable must be plugged in before signal circuits may be con-
nected.
Never use the product if the power cable is damaged. Check regularly if the
power cables are in perfect condition. Choose suitable protective measures and
installation types to ensure that the power cable cannot be damaged and that no
harm is caused by tripping hazards or from electric shock, for instance.
Risk of electric shock
It is prohibited to disconnect the earthed protective connection inside or out-
side of the instrument!
Safety

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If it is assumed that a safe operation is no longer possible, the instrument must be
shut down and secured against any unintended operation.
Safe operation can no longer be assumed when:
●Instrument shows visible damage
●Instrument includes loose parts
●Instrument no longer functions properly
– After an extended period of storage under unfavorable conditions (e.g. out-
doors or in damp rooms)
– After rough handling during transport (e.g. packaging that does not meet
the minimum requirements by post office, railway or forwarding agency)
Exceeding the low voltage protection
Use insulated wires and not bare wires for the terminal connection.
It is assumed that only qualified and trained personnel service the source
measure units and the connected loads.
Before switching on the product, it must be ensured that the nominal voltage set-
ting on the product matches the nominal voltage of the AC supply network.
5.2 Intended operation
The instrument is intended only for use by personnel familiar with the potential
risks of measuring electrical quantities.
For safety reasons, the instrument may only be connected to properly installed
wall outlets. Separating the ground is prohibited.
The power cable must be inserted before signal circuits may be connected.
Use only the power cable included in the delivery package. See "Delivery
package" on page 15.
Before each measurement, measuring cables must be inspected for dam-
age and replaced if necessary. Damaged or worn components can damage
the instrument or cause injury.
Intended operation

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The instrument may be operated only under the operating conditions and in the
positions specified by the manufacturer, without the product's ventilation being
obstructed. If the manufacturer’s specifications are not observed, this can result
in electric shock, fire and/or serious personal injury, and in some cases, death.
Applicable local or national safety regulations and rules for the prevention of acci-
dents must be observed in all work performed.
The instrument is designed for use in the following sectors: Industrial, residential,
business and commercial areas and small businesses.
The instrument is designed for indoor use only. Before each measurement, you
need to verify at a known source if the instrument functions properly.
To disconnect from the mains, unplug the IEC socket on the back panel.
See Table 5-1 for the general data on the instrument specification.
Table 5-1: General data on instrument specification
General data
Mains nominal voltage AC 100 V / 115 V / 230 V (±10 %) 50 Hz to 60 Hz
Maximum power consumption 400 W
Mains fuses 2 x IEC T4.0H 250 V
Operating temperature range +5 °C to +40 °C
Storage temperature range -20 °C to +70 °C
Humidity noncondensing 5 % to 95 %
Display TFT 5" 800 pixels x 480 pixels WVGA Touch
Rack installation R&S HZN96 rack adapter 2U (P/N: 3638.7813.02)
Dimensions (W x H x D) 222 mm x 97 mm x 436 mm (8.74" x 3.82" x 17.17")
Weight R&S NGU201 7.1 kg (15.65 lb)
R&S NGU401 7.1 kg (15.65 lb)
5.3 Unpacking and checking the instrument
Unpack the R&S NGU source measure unit carefully and check the content of the
package.
Unpacking and checking the instrument

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●Check the equipment for completeness using the delivery note and package
contents list for the various items.
●Check the instrument for any damage and loose parts. If there is any damage,
immediately contact the carrier who delivered the instrument.
Packing material
Retain the original packing material. If the instrument needs to be transpor-
ted or shipped later, you can use the material to protect the control elements
and connectors.
Risk of damage during transportation and shipment
Insufficient protection against mechanical and electrostatic effects during
transportation and shipment can damage the instrument.
●Always ensure that sufficient mechanical and electrostatic protections
are provided
●When shipping an instrument, the original packaging should be used. If
you do not have the original packaging, use sufficient padding to pre-
vent the instrument from moving around inside the box. Pack the instru-
ment in antistatic wrap to protect it from electrostatic charging
●Secure the instrument to prevent any movement and other mechanical
effects during transportation
Delivery package
The package contents contain the following items:
●R&S NGU source measure unit
●Four power cables
●One printed Getting Started manual
●One document folder containing a printed Basic Safety Instructions guide
Unpacking and checking the instrument

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5.4 Setting up the instrument
The R&S NGU is designed for benchtop and rackmount operation.
5.4.1 Bench operation
On a benchtop, the R&S NGU source measure unit can either lie flat or stand on
its feet. As shown in Figure 5-1, feet on the bottom can be folded out to set the
instrument in an inclined position.
Figure 5-1: Inclined position
Positioning of instrument
The instrument must be positioned in a manner that allows you to discon-
nect the unit from the mains at any time and without restrictions.
5.4.2 Rack mounting
The instrument can be installed in a 19" rack using the rack adapter R&S HZN96
(P/N 3638.7813.02). Proceed according to the installation instructions supplied
with the rack adapter.
Ambient temperature
Place the R&S NGU source measure unit in an area where the ambient
temperature is within +5 °C to +40 °C. The R&S NGU source measure unit
is fan-cooled and must be installed with sufficient space along the sides to
ensure free flow of air.
Setting up the instrument

Instrument tour
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6 Instrument tour
This chapter provides an overview of all the controls available in the R&S NGU
models and steps to switch on the instrument for the first time.
●Overview of controls........................................................................................17
●Switching on the instrument............................................................................ 22
6.1 Overview of controls
6.1.1 Front panel
The front panel of the R&S NGU is shown in Figure 6-1. The function keys and
navigation controls are located beside the display. The various connectors are
located at the right side of the display.
1 2 3
67
4
5
Figure 6-1: Front panel of R&S NGU201 model
1 = Menu control keys
2 = Display with touch screen
3 = Rotary knob and back key
4 = Output key
Overview of controls

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5 = Output terminals
6 = Power key
7 = USB connector
Menu control keys (1)
The menu control keys allow you to access the home window, device/channel
menu window and user button key in the instrument.
For a detailed description on menu control keys, see section "Menu Controls" in
the User Manual.
Display (2)
The display is a color TFT touch screen with measurement settings and functions
provided in the channel display area. The status bar which provides at both
device and channel level shows the device operating mode and channel settings
of the instrument.
For a detailed description on-screen layout, see section "Display Overview" in the
User Manual.
Rotary knob and back key (3)
The rotary knob and back key are used for menu navigation and value adjustment
in the instrument.
For a detailed description on rotary knob and back key, see section "Navigation
Controls" in the User Manual.
Output key (4)
The output key allows you to enable or disable the output power.
Refer to datasheet for the channel voltage/current limits in the source and sink
mode.
Output terminals (5)
The R&S NGU is a single channel source measure unit and it comes with the fol-
lowing models:
●R&S NGU201 model is a 2 quadrant source measure unit
●R&S NGU401 model is a 4 quadrant source measure unit
Overview of controls

Instrument tour
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Both models are equipped with "Force (High)", 2 x "Force (Low)", "Sense (High)",
"Sense (Low)" and a ground terminal.
With a jumper connecting the ground terminal and the additional "Force (Low)"
connector, the R&S NGU provides good ground connection which is essential
when measuring very small voltages and currents.
Power key (6)
The [Power] key switches the instrument on and off.
USB connector (7)
The USB connector is a Type-A connector. You can connect a USB flash drive to
this connector to perform a firmware update, store logging data or screen shots.
6.1.2 Rear panel
Figure 6-2 shows the rear panel of the R&S NGU with its connectors.
13 14 8
9101112
Figure 6-2: Rear panel of R&S NGU201 model
8 = AC inlet with fuse holder and voltage selector
9 = Channel 1 rear panel connector. For NGU201, the last two pins are labeled as DVM+ and
DVM- as an option. For NGU401, the pins are labeled as MOD+ and MOD-.
10 = USB connector (Device)
11 = USB connector (Host)
Overview of controls

Instrument tour
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12 = Ethernet (LAN) connector
13 = Cover for optional IEEE-488 (GPIB) interface
14 = Digital I/O connector
AC inlet with fuse holder and voltage selector (8)
Main supply cord
Do not use detachable mains supply cord with inadequate rating.
The power cable must be plugged in before signal circuits can be connected. Do
not use the product if the power cable is damaged. See Chapter 6.2, "Switching
on the instrument", on page 22 for more information.
The built-in voltage selector selects the mains voltage between 100 V, 115 V and
230 V. All voltage settings are using the same fuse rating.
Channel connectors (9)
Output terminals
Either the output terminals at the front panel or those at the back panel can
be used. Using both terminals at the same time can cause instrument mal-
function.
Digital voltmeter (DVM)
The DVM+ and DVM- pins on the channel connector are available only with
R&S NGU201 model equipped with option R&S NGU-K104 (P/N:
3663.0390.02 ).
Modulating signal (MOD)
The MOD+ and MOD- pins on the channel connector are available only with
R&S NGU401 model.
The channel connectors contain both output ("F+", "F-") and sense ("S+", "S-")
connections.
Overview of controls