LISN and AMN Schwarzbeck Options and Offers

What are LISN and AMN?

• Definition : LISN , Linear Impedance Matching Network, Line Impedance Stabilisation Networks ;
• Definition of: amn, Artificial Mains Network, Artificial Mains Network;

The role of LISN and AMN:

• Provide the necessary supply voltage (AC or DC) and current to the equipment under test (EUT).
• Couple the interference voltage generated by the test equipment and provide it to the test receiver ESR or receiver ESW.
• Provides an explicit RF impedance for the equipment under test (EUT), specifying the impedance as viewed from the EUT's equipment under test end.
• Avoiding noise interference from the power supply (filter)
• Protect the mains supply from stray interference voltages generated by the equipment under test.

Test Connection Configuration Diagram for LISN and AMN

There are a total of three types of LISNs and AMNs:

V-type artificial power supply network, T-type artificial power supply network, Δ-type artificial power supply network

LISN and AMN design principles:

The following diagram shows the voltage relationship for a two-wire system with independent grounding. symmetric: symmetrical wire; unsymmetric: unsymmetrical wire

LISN and AMN Symmetric: symmetric line; unsymmetric: asymmetric line

The V-LISN V-type artificial power network measures the asymmetrical interference voltage between two lines L1-GND or L2-GND, respectively.

V-LISN is also known as V-AMN (artificial power network).V-LISN is the most commonly used LISN today.

V-type artificial power networks are available with two different impedances, which need to be taken into account when selecting the model number. If you have questions about the technical parameters of the SCHWARZBECK-LISN, you can contact EUTTEST for advice.

• ①, In general, V-LISNs with 5μh inductance comply with standards CISPR 16-1-2, CISPR 25, ISO 7637, DO160, and are typically used for measurements on equipment in vehicles, ships, and airplanes that are connected to the onboard power supply via DC or 400Hz.
• ②, another 50 μh V-LISN will operate at 50 Hz or 60 Hz supply frequency. Complying with standards CISPR 16-1-2, MIL Std 461 and ANSI C63.4.
• ➂, T-ISN measures asymmetrical interference voltages (common-mode voltages) and provides them to EMI receivers.T-IS is typically used to measure telecommunication and data-transmission equipment connected to symmetrical lines, such as twisted-pair cables.

Select the LISN and AMN models:

After understanding the definition and principle of LISN and AMN, you can select from the table below SCHWARZBECK Germany offers LISN and AMN to meet the requirements of the standard, our test instruments comply with most of the product standards referenced in the basic standard CISPR16-1-2 (banana head jack or butterfly screw configuration), Automotive Automotive Electronics and Complete Vehicle CISPR25, MIL-STD-461 military standard, CISPR22 T-ISN (2-wire, 8-wire and CAT3\CAT5), and some other specially customized linear impedance matching networks.

This article lists all the industry test standards available for LISN selection. Click on the model number for detailed parameters, or contact us for more information if you need assistance.

Get a quote from LISN and AMN

Click on the model numbers in the table above or on the "Contact Us" link to get more information about SCHWARZBECK's technical data sheets and offers for LISN and AMN products.