Evolution Technologies MK-461C Bedienungsanleitung PDF herunterladen (Seite 32)

EMC seminar

Line Impedance Stabilization Networks (LISN)

Page 32

Purpose of a LISN:

1. Isolates the power mains from the

equipment under test. The power

supplied to the EUT must be as clean as

possible. Any noise on the line will be

coupled to the X-Series signal analyzer

and interpreted as noise generated by

the EUT.

2. Isolates any noise generated by the EUT

from being coupled to the power mains.

Excess noise on the power mains can

cause interference with the proper

operation of other devices on the line.

3. The signals generated by the EUT are

coupled to the X-Series analyzer using a

high-pass filter, which is part of the LISN.

Signals that are in the pass band of the

high-pass filter see a 50-Ω load.

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Evolution Technologies MK-461C Bedienungsanleitung Seite 32