TEKBOX TBL0110-2 1µH Line Impedance Stabilisation Network Instruction Manual
- June 1, 2024
- TEKBOX
Table of Contents
V1.1
TBL0110-2
1µH Line Impedance
Stabilisation Network
Introduction
The TBL0110-1 LISN is a two path 50 Ω//1 µH LISN characterized from 30Hz – 500
MHz. It is based on thestandard ECSS-E-ST-20-07C Rev 1. The standard provides
the general schematic of the LISN and allows forsome flexibility in component
values. The TBL0110-2 implementation aims for use in EMC measurements of
smalsatellites and spacecraft. The LISN does not have an output for conducted
emission measurements; instead, imerely functions as a network for line
impedance stabilisation. An RF current monitoring probe is used to measure
conducted emissions, according to the standard.
The 1µH inductor mimics the typical inductance of the supply wire harness in
small 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 // 1 µH
Characterized frequency range: 30 Hz – 500 MHz DC Resistance: 120 mΩ
Maximum current: 10 A continuous
Operating voltage range: 0 – 60V DC
EUT / SOURCE terminals: 4 mm banana sockets
Dimensions: W 120 mm x L 175 mm x H 85 mm; Weight: 0.9 kg
Impedance
Impedance: 1 kHz – 500 MHz; source terminals open, typical data Impedance: 1
kHz – 500 MHz; logarithmic impedance axis, source terminals open, typical data
The standard does not specify impedance limits. The green traces represent a ±
10% tolerance band of the simulated impedance (ideal components/no
parasitics);Impedance: 30 Hz –
500 MHz; logarithmic impedance axis, source terminals open, typical data
Phase
Input phase: 1 kHz – 500 MHz; source terminals open, typical data
Isolation
Isolation from SOURCE terminals to EUT terminals: 1 kHz – 500 MHz, typical data
Principle Schematics
In order to reproduce the system power bus impedance and to standardize the
measurement conditions used in different test sites, emissions and
susceptibility measurements on primary power lines shall be performed on
inserting a Line Stabilization Network (LISN) between the EGSE power supply
and the unit under test. The LISN schematic and the relevant impedance versus
frequency are chosen in accordance with the bus impedance mask. The design of
the LISN is usually provided by the spacecraft contractor. In case it is not
available in time the LISN schematic and the relevant impedance versus
frequency given below shall be used.
Prior to test, the network impedance shall be measured in the relevant
frequency range and attached to the test report.
Measurement of conducted emissions
ECSSEST2007C specifies differential mode conducted emission measurements on
power leads in the frequency range of 30 Hz to 100 kHz.
Furthermore, ECSSEST2007C specifies common mode and differential mode
conducted emission measurements on power and signal leads in the frequency
range of 100 kHz to 100 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;
References
ECSS-E-ST-20-07C Rev. 1
Ordering Information
Part Number | Description |
---|---|
TBL0110-2 | 1µH LISN, two path |
TBCP2-30K400 | Optional accessory: RF current monitoring probe for CE |
measurements
History
Version | Date | Author | Changes |
---|---|---|---|
V1.0 | 31.10.2023 | Mayerhofer | Creation of the document |
V1.1 | 31.10.2023 | Mayerhofer | Chapter 7 added |
TekBox Digital Solutions Vietnam Pte. Ltd.
www.tekbox.com
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Saigon Hi-Tech Park,
Tan Phu Ward, District 9,
Ho Chi Minh City, Vietnam