Name: EM5040 Series LISN
Brand: XGY Tek

Overview

EM5040 LISNs provide a defined impedance for the equipment under test and couple conducted disturbance signals to a receiver or spectrum analyzer. EM5040E, A and B cover 9 kHz to 30 MHz at 16 A; EM5040C covers 100 kHz to 200 MHz at 100 A rated current.

Choose the model around the test circuit and workflow: E provides the standard single-phase function, A adds receiver protection, B provides CM/DM separation, and C serves high-current single-line measurements.

Additional product details

Stable Impedance for Accurate Conducted Emission Measurement

The EM5040 Series is a family of V-type line impedance stabilization networks designed for conducted emission testing and EMC debugging. These LISNs provide a stable impedance environment for the equipment under test while coupling disturbance signals to external receivers or analyzers for accurate measurement.

The series includes multiple configurations for different workflows. EM5040E provides the standard single-phase LISN function, EM5040A adds a built-in 10 dB limiter and optional 150 kHz high-pass filter, EM5040B adds common-mode and differential-mode separation for advanced debugging, and EM5040C targets high-current, higher-frequency single-line testing for industrial and automotive-related applications.

Model Selection Guide

Model	Positioning	Key Function	Best Fit
EM5040E	Standard single-phase LISN	Basic V-type LISN for conducted disturbance voltage measurement	General CE testing and baseline EMC measurement
EM5040A	Protected test setup LISN	Built-in 10 dB limiter and optional 150 kHz high-pass filter	Receiver protection and compliance-oriented workflows
EM5040B	Advanced EMI debugging LISN	CM/DM separator for common-mode and differential-mode analysis	EMI filter debugging and interference root-cause analysis
EM5040C	High-current / high-frequency LISN	100 kHz to 200 MHz range and 100 A rating	Industrial, automotive, and high-current EMC test scenarios

EM5040E - Standard LISN

Parameter	Value
Frequency Range	9 kHz to 30 MHz
Circuit Type	(50uH + 5 ohm)
Measurement Circuit	Single phase two wire L/N
AC Voltage	0 to 264 VAC, 50/60 Hz +/-5%
DC Voltage	0 to 375 VDC
Current Rating	16 A
Output Connector	50 ohm BNC female
Artificial Hand	Yes
Weight	5 kg

EM5040A - Protected LISN

Parameter	Value
Frequency Range	9 kHz to 30 MHz
Circuit Type	(50uH + 5 ohm)
Measurement Circuit	Single phase two wire L/N
AC Voltage	0 to 264 VAC, 50/60 Hz +/-5%
DC Voltage	0 to 375 VDC
Current Rating	16 A
Output Connector	50 ohm BNC female
Limiter	10 dB, 130 dBuV threshold
High-Pass Filter	Optional 9 kHz / 150 kHz
Weight	5.25 kg

EM5040B - CM/DM LISN

Parameter	Value
Frequency Range	9 kHz to 30 MHz
Circuit Type	(50uH + 5 ohm)
Measurement Circuit	Single phase two wire L/N
AC Voltage	0 to 264 VAC, 50/60 Hz +/-5%
DC Voltage	0 to 375 VDC
Current Rating	16 A
Output Connector	50 ohm BNC female
CM/DM Separator	Yes
Weight	5.25 kg

EM5040C - High-Current LISN

Parameter	Value
Frequency Range	100 kHz to 200 MHz
Circuit Type	(5uH + 1 ohm)
Measurement Circuit	Single wire
AC Voltage	0 to 250 VAC, 0 to 400 Hz
DC Voltage	0 to 600 V
Current Rating	100 A rated / 500 A short-time
Output Connector	50 ohm N female
Weight	1.8 kg

Key Capabilities & Applications

Establish the impedance network

E/A/B use a (50 µH + 5 ohm) || 50 ohm V-network for single-phase L/N measurements. C uses a (5 µH + 1 ohm) || 50 ohm network for single-wire testing.

Select protection or EMI debugging

EM5040A includes a 10 dB limiter and offers an optional 150 kHz high-pass filter. EM5040B adds common-mode and differential-mode separation. EM5040E requires an external limiter for receiver protection.

Handle the higher-current circuit

EM5040C is rated for 100 A continuous current and 500 A for less than 30 seconds. It covers 100 kHz to 200 MHz and has an N female output; E/A/B use BNC female outputs.

All capabilities and operating conditions

Standards-Oriented

Designed to meet CISPR16-1-2:2006 requirements for V-network conducted emission testing

Stable Reference

Provides consistent impedance for the DUT while isolating unwanted mains interference

EMI Debug Ready

Selected models support common-mode and differential-mode analysis for filter debugging

Receiver Protection

Limiter-equipped model helps protect sensitive receivers and spectrum analyzers

Series Flexibility

Covers standard single-phase, protected, CM/DM, and high-current high-frequency use cases

Common applications

R&D conducted disturbance voltage measurement - single-phase electronic and electrical equipment testing
EMI filter debugging - CM/DM interference analysis in switching power supplies
Industrial and automotive compliance testing - VDE, CISPR25, MIL-STD, and ISO7637 workflows on EM5040C
Production quality assurance - standardized EMC testing for consistent conducted-emission performance

Technical Specifications

Parameter	Specification
Product Family	EM5040E / EM5040A / EM5040B / EM5040C
Frequency Range	9 kHz to 30 MHz (E/A/B); 100 kHz to 200 MHz (C)
Circuit Type	(50uH + 5 ohm) \|\| 50 ohm V-type (E/A/B); (5uH + 1 ohm) \|\| 50 ohm (C)
AC Voltage	0 to 264 VAC (E/A/B); 0 to 250 VAC (C)
Current Rating	16 A (E/A/B); 100 A rated, 500 A short-time (C)
Standards	CISPR 16-1-2:2006
Artificial Hand	510 Ω + 220 pF; E/A/B have artificial-hand function, C does not
EM5040E Receiver Protection	External limiter should be added to protect the test receiver

View all 17 specifications

Parameter	Specification
EM5040C Short-Time Current	500 A for less than 30 s; 100 A rated continuous current
Ground Protection, E/A/B	Side metal panel grounding; rear panel 4 mm butterfly bolt grounding
Ground Protection, C	Two M8 bolts; bottom metal panel connected to ground plane with screws
Operating Temperature	0 to 45 °C
Storage Temperature	-20 to 70 °C
Safety Standard	EN61010-1
Dimensions, E/A/B	338 × 237 × 133 mm (L × W × H)
Dimensions, C	322 × 122 × 128 mm (L × W × H)
Supplied Accessories	LISN; BNC male RF cable, 2 m; BNC female to N male adapter; instruction manual; warranty card; test report

Specifications are subject to change without notice.

Models, Configuration & Compatibility

EM5040

EM5040E — Standard

9 kHz to 30 MHz, 16 A, single-phase L/N network. Add an external limiter to protect the receiver.

EM5040A — Protected

9 kHz to 30 MHz, 16 A, built-in 10 dB limiter and optional 150 kHz high-pass filter.

EM5040B — CM/DM

9 kHz to 30 MHz, 16 A, with common-mode and differential-mode separation for EMI debugging.

EM5040C — High Current

100 kHz to 200 MHz, single-wire network, 100 A rated continuous and 500 A for less than 30 seconds.

Control interfaces and software

The EM5040 Series LISN should be scoped with the DUT power path, receiver or spectrum analyzer, limiter needs, grounding plan and acceptance evidence for conducted-emissions work.

CISPR 16-1-2 workflow · Conducted-emissions setup · Receiver protection · CM / DM analysis · High-current option

Technical Resources

Download Datasheet

PDF technical specifications

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Selection guidance

Format: V-type LISN

Coverage: 9 kHz to 30 MHz or 100 kHz to 200 MHz; 16 A or 100 A rated by model

Best for: Conducted disturbance-voltage measurement, EMC debugging, compliance validation, and CM/DM analysis.

Compare products in the RF Accessories category

Confirm LISN frequency range, current rating, circuit type, receiver-protection needs and conducted-emissions workflow before selecting the EM5040 Series LISN.

Looking for EMC test equipment or a custom LISN solution?

XGY Tek specializes in power-line stabilization and EMC validation setups for conducted emission measurement, EMI debugging, and compliance testing.

Which model provides common-mode and differential-mode analysis?

EM5040B includes the CM/DM separator for common-mode and differential-mode analysis. This is a model-specific function.

Which model protects the receiver with a built-in limiter?

EM5040A includes a 10 dB limiter with a 130 dBµV threshold and offers an optional 150 kHz high-pass filter. EM5040E should be used with an external limiter for receiver protection.

Can EM5040C carry 500 A continuously?

No. EM5040C is rated for 100 A continuous current. Its 500 A short-time rating applies for less than 30 seconds.

EM5040 Series LISN