TBL0550-1

Line Impedance Stabilisation Network LISN

The Tekbox TBL0550-1 LISN is a precision test accessory designed for conducted noise measurements on DC-powered electronic equipment. It is used in EMC pre-compliance testing and provides a stable impedance reference between the power supply and the device under test (DUT). This allows accurate measurement of noise signals using a spectrum analyzer or EMI receiver.

Datasheet

Features

Key capabilities and advantages

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Designed for conducted noise testing of DC-powered devices.
Supports EMC standards including CISPR-16-1-2, CISPR-25, EN55025, MIL-STD-461F, and ISO11452-4 (with limitations).
5 µH inductor decouples the supply and DUT lines for measurement consistency.
High current capability: suitable for currents up to 50 A continuous.
Includes BNC-to-N cable, mating connectors and ground brackets for grounding to a test ground plane.
Can be paired with Tekbox LISN Mate for separate common-mode and differential-mode noise measurements.

Specification

Technical specifications and parameters

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Frequency range	100 kHz – 150 MHz
DC Resistance	< 7 mΩ Source+ to DUT+; < 2 mΩ Source- to DUT-
Maximum current	50A continuous, 70 A for 3 minutes
Nominal operating voltage range	0 – 60V DC;
Component rating	250V
High current plug/screw terminals – male	Phoenix Contact 1998933, female: Phoenix Contact 1967375
Dimensions	120 mm x 100 mm x 225 mm (270 mm including ground brackets); weight: 1.6 kg