TEKBOX TBL0225-2 2µH Line Impedance Stabilisation Network User Manual

: May 15, 2024
: TEKBOX

Table of Contents

TEKBOX TBL0225-2 2µH Line Impedance Stabilisation Network
Product Information
Product Usage Instructions
FAQ
Introduction
Parameters
Impedance
Phase
Isolation
Principle Schematics
Measurement of conducted emissions
References
Ordering Information
History
References
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TEKBOX TBL0225-2 2µH Line Impedance Stabilisation Network

TEKBOX-TBL0225-2-2µH-Line-Impedance-Stabilisation-Network-
PRODUCT

Product Information

Specifications

Version: V1.0
Impedance: Simulated impedance (ideal components/no parasitics)
Phase
Isolation
Measurement of conducted emissions:
- Differential mode conducted emission measurements on power leads in the frequency range of 10 Hz to 150 MHz
- Common mode and differential mode conducted emission measurements on power and signal leads in the frequency range of 10 Hz to 150 MHz

Product Usage Instructions

Impedance Setup

Ensure to use ideal components with no parasitics for simulated impedance.

Phase Adjustment

Adjust the phase settings as required for your application.

Isolation Check

Perform isolation checks to ensure proper functioning.

Conducted Emission Measurement Setup

Follow the ECSSEST2007C specifications for conducting emission measurements. Use differential mode setup for power leads and common mode setup for power and signal leads in the frequency range of 10 Hz to 150 MHz.

FAQ

Q: What is the frequency range for conducted emission measurements?

A: The frequency range for conducted emission measurements is 10 Hz to 150 MHz as per ECSSEST2007C specifications.

Q: Where can I find the ordering information for the product?

A: The part numbers for ordering are TBL0225-2 and TBCP2-30K400.

Q: What are the key specifications of the product?

A: The product features simulated impedance with ideal components, phase adjustment capability, isolation checks, and conducted emission measurements in both differential and common modes.

Introduction

The TBL0225-2 LISN is a two-paths 50 Ω // 2 µH LISN characterized from 10Hz – 200 MHz. It is based on the standard ECSS-E-ST-20-07C Rev 1. The standard provides the general schematic of the LISN and allows for some flexibility in component values. The TBL0225-2 implementation aims for use in EMC measurements of satellites and spacecraft. The LISN does not have an output for conducted emission measurements; instead, it merely functions as a network for line impedance stabilisation. An RF current monitoring probe is used to measure conducted emissions, according to the standard. The 2 µH inductor mimics the typical inductance of the supply wire harness in spacecraft or satellites. The LISN is inserted into the power line and power return line of the EUT.

Parameters

LISN type: V-AMN, 50 Ω // 2 µH
Characterized frequency range: 10 Hz – 200 MHz
DC Resistance: 100 mΩ per path
Maximum current: 25 A continuous
Operating voltage range: 0 – 60V DC
EUT / SOURCE terminals: 4 mm banana sockets
Dimensions: W 260 mm x L 140 mm x H 150 mm
Weight: 4.1 kg

Impedance

TEKBOX-TBL0225-2-2µH-Line-Impedance-Stabilisation-Network-
FIG-1

The standard does not specify impedance limits. The green traces represent a ± 10% tolerance band of the simulated impedance (ideal components/no parasitics);

TEKBOX-TBL0225-2-2µH-Line-Impedance-Stabilisation-Network-
FIG-2

Phase

TEKBOX-TBL0225-2-2µH-Line-Impedance-Stabilisation-Network-
FIG-3

Isolation

TEKBOX-TBL0225-2-2µH-Line-Impedance-Stabilisation-Network-
FIG-4

Principle Schematics

TEKBOX-TBL0225-2-2µH-Line-Impedance-Stabilisation-Network-
FIG-5

Measurement of conducted emissions

ECSSEST2007C specifies differential mode conducted emission measurements on power leads in the frequency range of 10 Hz to 150 MHz.
Furthermore, ECSSEST2007C specifies common mode and differential mode conducted emission measurements on power and signal leads in the frequency range of 10 Hz to 150 MHz.

Tekbox also provides suitable RF current monitoring probes, such as the TBCP2-30K400.
LISN are also required in other ECSSEST2007C measuring setups:
Radiated emission – electric field; inrush current; conducted susceptibility – signal injection; conducted susceptibility – bulk cable injection; conducted susceptibility – transients; conducted susceptibility – spike series / parallel injection; radiated susceptibility – magnetic field; radiated susceptibility – electric field;