ETS-Lindgren 4825 User Manual

Model 4825/2

Line Impedance

Stabilization Network

(LISN)

User Manual

ETS-Lindgren L.P. reserves the right to make changes to any product described
herein in order to improve function, design, or for any other reason. Nothing
contained herein shall constitute ETS-Lindgren L.P. assuming any liability
whatsoever arising out of the application or use of any product or circuit
described herein. ETS-Lindgren L.P. does not convey any license under its
patent rights or the rights of others.

© Copyright 1999–2010 by ETS-Lindgren L.P. All Rights Reserved. No part
of this document may be copied by any means without written permission
from ETS-Lindgren L.P.

Trademarks used in this document: The ETS-Lindgren logo is a trademark of
ETS-Lindgren L.P.

Revision Record | MANUAL 4825/2 LISN | Part #399241, Rev. C

Revision Description Date

A Initial Release April, 1999

B Rebrand June, 2010

C Updated Physical Specifications;

updated Installation

ii |

July, 2010

Table of Contents

Notes, Cautions, and Warnings ................................................ v

1.0 Introduction .......................................................................... 7

ETS-Lindgren Product Information Bulletin ................................................... 7

2.0 Maintenance ......................................................................... 9

Service Procedures ....................................................................................... 9

3.0 Specifications ..................................................................... 11

Electrical Specifications ............................................................................... 11

Physical Specifications ................................................................................ 12

4.0 Installation .......................................................................... 13

Equipment Under Test ................................................................................. 17

Spectrum Analyzer / Receiver ..................................................................... 18

5.0 Data ..................................................................................... 19

6.0 Schematic ........................................................................... 21

Appendix A: Warranty ............................................................. 23

Appendix B: EC Declaration of Conformity .......................... 25

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iv |

Notes, Cautions, and Warnings

Note: Denotes helpful information intended to

See the ETS-Lindgren Product Information Bulletin for safety,
regulatory, and other product marking information.

provide tips for better use of the product.

Caution: Denotes a hazard. Failure to follow
instructions could result in minor personal injury
and/or property damage. Included text gives proper
procedures.

Warning: Denotes a hazard. Failure to follow
instructions could result in SEVERE personal injury
and/or property damage. Included text gives proper
procedures.

| v

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vi |

1.0 Introduction

The ETS-Lindgren
Model 4825/2 Line
Impedance Stabilization
Network (LISN) is a

two-channel low pass filter
network designed to isolate
the Equipment Under Test
from an external power
source while steering any
radio frequency signals
from the power line to a
50-ohm port.

The conducted emissions measurements may be made in accordance with
regulatory compliance standards.

ETS-Lindgren Product Information Bulletin

Model 4825/2 Front View

See the ETS-Lindgren Product Information Bulletin included with your shipment
for the following:

• Warranty information

• Safety, regulatory, and other product marking information

• Steps to receive your shipment

• Steps to return a component for service

• ETS-Lindgren calibration service

• ETS-Lindgren contact information

Introduction | 7

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8 | Introduction

2.0 Maintenance

Only trained service personnel should
perform adjustments and/or service
procedures.

Inside the Model 4825/2 are LETHAL
voltages with which you could come into
contact. Capacitors inside the unit may
still be CHARGED even when the unit is
disconnected from power.

Before performing any maintenance,
follow the safety information in the
ETS-Lindgren Product Information
Bulletin included with your shipment.

WARRANTY

Maintenance of the Model 4825/2 is
limited to external components such as
cables or connectors.

Clean the exterior of the cabinet using a
damp cloth and mild cleaner. Always
unplug the unit before cleaning.

To prevent electrical shock, do not
remove cover.

If you have any questions concerning
maintenance, contact ETS-Lindgren
Customer Service.

Service Procedures

For the steps to return a system or system component to ETS-Lindgren for
service, see the Product Information Bulletin included with your shipment.

Maintenance | 9

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10 | Maintenance

3.0 Specifications

Electrical Specifications

Frequency Range: 9 kHz–30 MHz

Network Inductance: 50 µH / 250 µH
Network Impedance: 50 Ω
Current Rating

4825/2NM: 20 Amperes
4825/2BR: 13 Amperes

4825/2SH: 16 Amperes
4825/2AS: 15 Amperes

Maximum AC Voltage

4825/2NM: 125 VAC 60 Hz
4825/2BR: 250 VAC 50 Hz

(VDE 0876 specified curve

± 20%

4825/2SH: 250 VAC 50 Hz
4825/2AS: 250 VAC 50 Hz

Input Connectors: IEC-309 Type 3-wire Inlet

32 Amperes
Single Phase

(mating connector provided)

Specifications | 11

Output Connectors

4825/2NM: NEMA 5-20R
4825/2BR: BS 1363

4825/2SH: CEE 7
4825/2AS: AS 3112

Monitor Port: BNC

1 per line

Environmental
Installation: Indoor use only
Altitude: 15000 ft (4572 m) max
Temperature: 0°C to 40°C (32°F to 104°F)
Relative Humidity: 80% up to 31°C (87.8°F)

decreasing linearly to 50% at

°C (104°F)

40

Physical Specifications

Height: 127 mm (5.0 in)
Width: 440 mm (17.3 in)
Depth: 381 mm (15.0 in)
Weight: 9 kg (20 lb)

12 | Specifications

4.0 Installation

Before connecting any components, follow the
safety information in the ETS-Lindgren
Product Information Bulletin included with your
shipment.

Overcurrent protection is provided in the
Model 4825/2. The rating of the integral 2-pole
circuit breaker is 250 VAC 50/60 Hz at
25 amperes. If overcurrent protection at a lower
rating is required by the Equipment Under Test,
the unit must be connected to a power mains
which has appropriately rated mains protection
installed.

The Model 4825/2 is provided with a protective
earthing connection integral to the power inlet
and input power cord assembly. The mains plug
should only be connected to a mains source
which utilizes a protective earth conductor. Due
to the high leakage current to ground inherent
in this type of equipment, it is necessary to
install a supplemental protective earthing wire
from the protective earth terminal on the rear
panel to an appropriate earthing point on the
power mains. This earthing point should be
determined by an electrician authorized to
perform such work by appropriate code or law.
Any interruption of the protective conductor
inside or outside of the unit is likely to make the
Model 4825/2 dangerous. Intentional
interruption is prohibited. The supplemental
ground wire is supplied with the unit.

Installation | 13

The Model 4825/2 is provided with resistors to
help bleed off high voltage transients, but it is
advisable to connect the input and output
connectors to their proper power lines and
loads before connecting the monitor port to the
measurement instrumentation; otherwise,
power surges or transients can damage the test
instrumentation mixers or attenuators.

The Model 4825/2 Line Impedance Stabilization Network (LISN) is designed for
use in Installation Category II and Pollution Degree II per lEC-1010 and IEC-664.
When installing in a cabinet, make sure that the convection around the product is
not restricted. The ambient temperature outside the cabinet must be less than

°

the maximum operating temperature of the Model 4825/2 by 4
100 watts dissipated in the cabinet. If the total power dissipated in the cabinet is
greater than 800 watts, then forced convection must be used.

C for every

Model 4825/2 Front View

Model 4825/2 Back View

14 | Installation

The Model 4825/2 is nominally designed for a 25-ampere current capacity. For
safe operation, you must follow the maximum current rating of the output
receptacle on the mains power adapter. See Specifications on page 11 or the
back panel of the Model 4825/2 for the applicable current rating.

Maximum line-to-line voltage must not exceed the voltage rating of the power
connectors provided on the input and output of the unit. See Specifications on
page 11 for the applicable maximum value.

The input power connection to the line side of the Model 4825/2 is made through
the IEC-309 pin and sleeve type power inlet on the back panel. This three-wire
power inlet is rated at 125/250 VAC 60 Hz in North America. Additionally, the
power inlet is certified by VDE for operation at 220-240 VAC 50 Hz. Power to the
Model 4825/2 is routed directly from the power inlet to an internally-wired
25 ampere circuit breaker. This circuit breaker provides a means to remove
power in case of emergency.

An IEC-309 cable mount connector is provided with the Model 4825/2. This
connector is a three-wire receptacle rated at 32 amperes. The cordage required
to connect the power mains to the unit must meet certain regulatory requirements
for electrical safety. A harmonized metric cordage size of 3 x 4.00 mm
recommended for international applications. A wire size of 8 AWG is
recommended for installation in North America. The installation wiring of the
Model 4825/2 should be accomplished by an electrician authorized to do such
work by appropriate code or law. The following color codes should be observed:

2

is

North America International

125 VAC 250 VAC

Line – Black Line – Brown

Neutral – White Neutral – Blue

Ground – Green or Green/Yellow Earth – Green/Yellow

Installation | 15

The ground pin of the IEC-309 inlet is connected to chassis ground. Prior to
powering the Model 4825/2, the earth connection from the power mains must be
connected to this ground pin. Additionally, the brass lug terminal on the front
panel should be bonded to the ground plane of the conducted emissions test
setup. The brass ground stud should not be considered a protective earthing
terminal. The earth line does not provide high frequency isolation and should not
carry any voltage above earth potential.

Prior to energizing the Model 4825/2, connect the power adapter to the front
panel by slipping the three pins on the adapter into the three socket receptacles
on the front panel. Use the four captive screws to attach the adapter to the front
panel. Although the main chassis is rated for 25 amperes, you must follow the
maximum rating of the selected power adapter. See the list of adapters and
power ratings in Specifications on page 11 and on the back panel of the unit. The
receptacle provided in the power adapter is determined by the model specified.
Following are the standard output receptacle types:

• NEMA (Type 5-15R)

• Schuko (Type CEE 7)

• British Standard (BS 1363)

• Australian (AS 3112)

16 | Installation

The safety ground isolation choke selector switch located on the front panel
switches the 1.6 mH earth line choke in and out of the safety ground circuit. The
ground choke is designed and manufactured with sufficient current capacity to
conduct the maximum current rating of the Model 4825/2 and at no time is the
safety ground of the unit compromised. When the earth line choke selection
switch is in the IN position, the earth line choke avoids a double RF ground
connection (safety ground and measurement ground) in the conducted emissions
test setup.

An artificial hand connection is provided on the front panel. In conformance to
EN55014 and BS800, the artificial hand is used to test handheld equipments
which are provided without earth connections.

Equipment Under Test

• The Equipment Under Test (EUT) is connected to the Model 4825/2
through the power adapter located on the front panel.

• The red and black socket receptacles on the front panel provide
connection to the two power lines; the green socket receptacle
provides connection to the earth line.

• A radio frequency bonding stud on the front panel
is identified by the equipotentiality symbol. In
normal operation this bonding stud should be
connected to the ground plane of the conducted
emissions test setup using a grounding strap or
braid. This grounding stud should not be
considered a protective earth bonding point.

Installation | 17

Spectrum Analyzer / Receiver

• Use the BNC connectors on the front panel to connect the spectrum
analyzer or EMI receiver.

• The monitor port which is not being monitored should be terminated
into a coaxial 50-ohm terminator.

Connect the input and output terminals to their proper mains
connections and EUT connections before connecting the monitor port
to the measurement instrumentation; otherwise, power surges may
damage the test instrumentation mixers or attenuators.

• Removal of a terminator and connection to the BNC receptacle will not
generate power surges.

• When the power is to be disconnected, remove the coaxial connection
to the measurement instrumentation first to avoid possible damage.

18 | Installation

5.0 Data

Characterizations for each measurement port of the Model 4825/2 Line
Impedance Stabilization Network (LISN) are included with the unit. The graphs
provide individual plots of both impedance and insertion loss data. Impedance is
plotted in a semi-log format where frequency is displayed on the horizontal from
9 kHz to 30 MHz. The vertical has a range of 0 ohms to 100 ohms and
represents the measured impedance of the unit. The insertion loss is also plotted
with frequency on the horizontal from 9 kHz to 30 MHz. The vertical of the graph
has a range of -9 dB to 1 dB and represents the measured insertion loss of the
Model 4825/2.

A Certificate of Calibration Conformance is provided with each Model 4825/2.

Data | 19

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20 | Data

6.0 Schematic

Schematic | 21

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22 | Schematic

Appendix A: Warranty

See the Product Information Bulletin included with your shipment for
the complete ETS-Lindgren warranty for your Model 4825/2 Line
Impedance Stabilization Network (LISN).

DURATION OF WARRANTIES FOR MODEL 4825/2

All product warranties, except the warranty of title, and all remedies for warranty
failures are limited to two years.

Product Warranted Duration of Warranty Period

Model 4825/2 Line Impedance
Stabilization Network (LISN)

2 Years

Warranty | 23

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24 | Warranty

Appendix B: EC Declaration of Conformity

EC Declaration of Conformity | 25