Rohde & Schwarz ESH3-Z6 User manual

R&S®ESH3-Z6
V-Network 5µH / 50 Ω
Manual
Manual
Version 01
1178993202
(;ÜñP2)

This document describes the R&S®ESH3-Z6.
© 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 their owners.
1178.9932.02 | Version 01 | R&S®ESH3-Z6
Throughout this manual, products from Rohde & Schwarz are indicated without the ® symbol , e.g. R&S®ESH3-Z6 is indicated as
R&S ESH3-Z6.

Safety Instructions for LISNs
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3Manual 1178.9932.02 ─ 01
1 Safety Instructions for LISNs
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 LISN 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 safety instructions brochure. If you are unsure about the appropriate use, con-
tact Rohde & Schwarz customer service.
Line impedance stabilization networks (LISNs) are designed according to CISPR
16-1-2 (EN 55016-1-2) and do not meet the permissible limit for the leakage current as
defined in EN 61010-1. In addition, LISNs do not provide basic insulation, rated as
measurement category II (protection class 1). Therefore, only electrically skilled people
may connect, set up and use LISNs.
LISNs can thus pose hazardous and even life-threatening risks.
●Electrical shock because of a high leakage current and live parts if the LISN is not
grounded.
●Electrical shock because the LISN does not have a fuse in the measuring circuit.
●Burns and fire hazard caused by overheating of the housing. Overheating can
occur if the ventilation is insufficient or if the cables' cross-section is too small.
These users also need sound knowledge of at least one of the languages in which the
user interfaces and the product documentation are available.
If any part of the LISN is damaged or broken, stop using the LISN. Never open the cas-
ing of the LISN. Only service personnel authorized by Rohde & Schwarz are allowed to
repair the LISN. Contact Rohde & Schwarz customer service at http://www.customer-
support.rohde-schwarz.com.
Lifting and carrying the product
If the product is heavy, you cannot move or carry it on your own. A single person can
only carry a maximum of 18 kg safely, depending on age, gender and physical condi-
tion. Look up the weight in the data sheet. To move the product safely, you can also
use lifting or transporting equipment such as lift trucks or forklifts. Follow the instruc-
tions provided by the lifting or transporting equipment manufacturer.
Choosing the operating site
Only use the LISN indoors in rooms equipped with a protective earth connection (for
example EMC test rooms).
The product casing is not waterproof and water that enters the casing can electrically
connect the casing with live parts. This can lead to electric shock, serious personal
injury or death if you touch the casing.

Safety Instructions for LISNs
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4Manual 1178.9932.02 ─ 01
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.
Setting up the instrument
Always place the LISN on a stable, flat and level surface with the bottom of the LISN
facing down. Make sure that the air supply is not obstructed from any side.
Place the LISN on a nonflammable base, for example a metal plate, to prevent a fire if
the ventilation system fails or if it gets too hot.
If the instrument has foldable feet, always fold the feet completely in or out to ensure
stability. The feet can collapse if they are not folded out completely or if the LISN is
moved without lifting it. The foldable feet are designed to carry the weight of the instru-
ment, but not an extra load.
Observe the applicable national regulations and standards as part of the installation
process.
Protective ground connection
Always establish a protective ground connection before connecting the LISN to a
power source.
A protective ground protects you from electrically live parts on the casing caused by
high leakage currents. High leakage currents can cause electric shock, serious per-
sonal injury or death if you touch the casing.
Ground cables must have a sufficient cross-section that complies with
VDE 0100-540 part 5-54 (IEC 60364-5-54).
Validate that the ground connection is safe.
The ground connection must remain until the LISN has been disconnected from the
power source.
If the LISN has an auxiliary voltage: Secure the test setup with a second protective
ground. The second ground connection protects you from live parts if the ground con-
nection of the auxiliary cable fails.
Connecting to power
The product is an overvoltage category II product and must be connected to a fixed
installation used to supply energy-consuming equipment such as household applian-
ces and similar loads. Be aware that electrically powered products have risks, such as
electric shock, fire, personal injury or even death.
Keep to the protective measures given by VDE 0100-410 (IEC60634-4-41) while work-
ing with the LISN.

Safety Instructions for LISNs
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5Manual 1178.9932.02 ─ 01
Take the following measures for your safety:
●Use double-insulated connecting cables with characteristics suitable for the appli-
cation:
– Appropriate minimum cross-section.
– Appropriate minimum voltage rating.
Select the cable based on the maximum power consumption of the device under
test, the fuse rating of the building installation and the cable length. When installing
the supplied cable sockets, observe the assembly instructions and the require-
ments of the manufacturer.
●By design, LISNs do not have a fuse in the measuring circuit. Therefore, you have
to make sure that the operating circuit between the power supply and the LISN's
power connector is fused correctly.
●Only use the power cable delivered with the product. It complies with country-spe-
cific safety requirements.
●Only use intact cables and route them carefully so that they cannot be damaged.
Check the power cables regularly to ensure that they are undamaged. Also ensure
that nobody can trip over loose cables.
●Only connect the product to a power source with a maximum fuse protection
according to the datasheet.
●Ensure that you can disconnect the product from the power source at any time.
Pull the power plug to disconnect the product. The power plug must be easily
accessible. If the product is integrated into a system that does not meet these
requirements, provide an easily accessible circuit breaker at the system level.
●If the LISN has an auxiliary voltage: Before taking the LISN auxiliary voltage into
operation, ensure that the voltage and frequency indicated on the product match
the available power source. If the values do not match, contact Rohde & Schwarz
customer service.
If the ventilation system is powered by an auxiliary voltage, always connect the
auxiliary voltage before taking the LISN into operation. Operation without the venti-
lation system leads to overheating and can cause a fire.
Using accessories
Select accessories that are suitable for the instrument and the measurement task,
especially if they are not manufactured by Rohde & Schwarz.
Measurement accessories such as current clamps or artificial hands must comply with
the measurement category of your test setup.
Cleaning the product
Use a dry, lint-free cloth to clean the product. When cleaning, keep in mind that the
casing is not waterproof. Do not use liquid cleaning agents.
Meaning of safety labels
Safety labels on the product warn against potential hazards.

Safety Instructions for LISNs
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6Manual 1178.9932.02 ─ 01
Potential hazard
Read the product documentation to avoid personal injury or product damage.
Heavy product
Be careful when lifting, moving or carrying the product. Carrying the product requires at least
two people or transport equipment.
Electrical hazard
Indicates live parts. Risk of electric shock, fire, personal injury or even death.
Hot surface
Do not touch. Risk of skin burns. Risk of fire.
Protective conductor terminal
Connect this terminal to a grounded external conductor or to protective ground. This protects
you against electric shock should an electric problem occur.

Introduction
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7Manual 1178.9932.02 ─ 01
2 Introduction
V-networks are devices that are used to measure disturbance voltages on mains-
dependent loads. For measurements, they are usually inserted between the power
supply and the equipment under test (EUT). The RF port provides the means to con-
nect them to a test receiver and analyze the EUT characteristics.
The main features of a V-network are to:
●Supply the EUT with AC supply voltage or DC supply voltage.
●Provide a standardized load impedance.
●Isolate the test circuit from power supply disturbances.
●Deliver unsymmetric disturbance voltage generated by the EUT to the test receiver
in a defined manner.
The R&S ESH3-Z6 in particular is a single phase V-network that corresponds to a 5 µH
inductor. It complies to the requirements specified in CISPR 25.
Unpacking the R&S ESH3-Z6
1. Carefully remove the R&S ESH3-Z6 from the box it was delivered in.
2. Check the R&S ESH3-Z6 for any damage.
Retain the original packing material. If the instrument needs to be transported or
shipped later, you can use the material to protect the control elements and connec-
tors.

Instrument Tour
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8Manual 1178.9932.02 ─ 01
3 Instrument Tour
13 245
Figure 3-1: Front view (labeled To Equipment Under Test)
1 = Ground terminal X2.2
2 = Safety cap
3 = Power connector X2.1 (for EUT)
4 = RF output (to test receiver)
5 = Ground plate (contains 2 notches for ground cable connection)

Instrument Tour
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13 24
Figure 3-2: Rear view (labeled To Power Source)
1 = Ground terminal X1.2
2 = Safety cap
3 = Power connector X1.1 (to power source)
4 = Ground plate (contains 2 notches for ground cable connection)

Test Setup
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10Manual 1178.9932.02 ─ 01
4 Test Setup
Putting the R&S ESH3-Z6 into operation
1. Remove the nut that secures the safety cap (both front and back).
2. Remove the safety cap.
3. DANGER! Risk of electric shock. Before you connect the V-network to the power
source, you have to connect the R&S ESH3-Z6 to a protective ground terminal. An
unearthed R&S ESH3-Z6 is live. Touching a live electrical device causes serious
personal injury, or even death.
The protective ground connection must remain until you have disconnected the V-
network from the power supply.
Connect the R&S ESH3-Z6 to a reference ground.
a) Connect the ground terminals X1.2 and X2.2 to a protective ground terminal.
b) Screw on the safety nuts to secure the ground cables.
c) If required by the test setup: Connect the ground plate to a protective ground
terminal via the notches in the ground plate.
The R&S ESH3-Z6 has a single current path from X1.1 to X2.1. Therefore, the
ground terminals may only be used as a return line if the EUT and its generator
use reference ground as a return line (for example in case of low-voltage net-
works).
If the supply lines are isolated from the reference ground, you have to feed each
line into a separate R&S ESH3-Z6 as shown in Figure 4-1. In that case, you have
to connect both V-networks to a protective ground terminal.
4. Make sure that the R&S ESH3-Z6 gets enough ventilation.
5. Connect the EUT to the power connector on the front side.
6. Connect the power connector on the back side of the R&S ESH3-Z6 to the power
source.
Route the cables as specified by CISPR or as if no V-network were there.
7. Put the safety caps back on.
8. Secure the safety caps with the nut.
9. NOTICE! Risk of intrument damage. We recommend to keep the test receiver dis-
connected when you turn the power on or off. High power pulses that occur while
turning the power on and off can damage the test receiver.
Connect the RF output to the RF input of a test receiver with a 50 Ω coaxial cable.
The test receiver shows the disturbance voltages in dBµV.