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Schwarzbeck LISN / AMN

Schwarzbeck offers various LISNs / AMN’s

  • CISPR 16-1-2
  • Single Path LISN (Automotive)  CISPR 25 ISO 7637
  • HV-LISN (automotive) CISPR 25 Ed.4 or BMW GS 95025-1
  • BAN Broadband Artificial Networks ISO 114527-7 or DC-10614
  • MIL STD 461/462
  • T-ISN
  • Special LISNs PV, Space and TEMPEST

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A LISN Line Impedance Stabilization Networks / AMN Artificial Mains Network

  • supplies the neccessary mains voltage (AC or DC) and current for the Equipment under Test (EuT).
  • couples interference voltage generated by the EuT and supplies it to the receiver.
  • provides well defined RF-impedance to the Equipment under Test (EuT)
  • keeps away unwanted disturbance coming from mains (filter)
  • protects the mains from unwanted disturbance voltage generated by the EuT

Figure 1 Measurement setup conducted disturbances

We can distinguish three types of LISN: V-, T- and Delta-LISN

Figure 2 shows the voltage relationship of a two-line-system with separate ground.

The V-LISN measures the unsymmetric disturbance voltage between the two lines L1 and ground or L2 and ground respectively. V-LISN are also called V-ANM (Artificial Mains Network). The V-LISN is by far the most commonly used LISN.

There are two types of V-LISN with different impedances. The V-LISN with a 5μH inductance (CISPR 16-1-2, CISPR 25, ISO 7637, DO160) are normally used to measure equipment for vehicles, boats and aircrafts connected to onboards mains with DC or 400 Hz. The other Type of V-LISN with 50 µH according to CISPR 16-1-2, MIL STD 461 and ANSI C63.4 is intended to operate at mains frequencies of 50 Hz or 60 Hz.

The T-ISN (Figure 2 right) measures the asymmetric disturbance voltage (common mode voltage) and provides it to an EMI Receiver. T-ISN is normally used for measuring telecommunication and data transmission equipment connected to symmetrical lines as e.g. twisted pairs..

 

Figure 2 LISN / AN Topology

 

Schwarzbeck LISN overview

Type Topology Impedance Current max. Paths Options
CISPR 16-1-2 socket
NSLK 8117 V-LISN (50 µH + 5 Ω) || 50 Ω 2 x 10 A 2
NSLK 8127 V-LISN (50 µH + 5 Ω) || 50 Ω 2 x 16 A 2 RC, PLC
NSLK 8126 V-LISN (50 µH + 5 Ω) || 50 Ω 2 x 16 A Schuko
4 x 16 A CEKON
4 RC
NSLK 8128 V-LISN (50 µH + 5 Ω) || 50 Ω 2 x 16 A Schuko and
4 x 32 A CEKON
4 RC
NSLK 8163 V-LISN (50 µH + 5 Ω) || 50 Ω 4 x 64 A CEKON 4 RC
CISPR 16-1-2 Wing Terminals
NNLK 8121 V-LISN (50 µH + 5 Ω) || 50 Ω 4 x 50 (100) A  4 RC, Hochstrom, 400/700V, Lüfter
NSLK 8122 V-LISN (50 µH + 5 Ω) || 50 Ω 2 x 50 A  2
NNLK 8129 V-LISN 50 µH || 50 Ω 4 x 200 (300) A  4 RC, 400/700 V, Lüfter
NNLK 8129-2 HV V-LISN 50 µH || 50 Ω 2 x 200 (300) A 2 RC,TC
NNLK 8130 V-LISN 50 µH || 50 Ω 4 x 400 (500) A  4 RC
NNLK 8140 V-LISN 50 µH || 50 Ω 1 x 800 (1000) A single
Automotive
NNHV 8123 V-LISN 5µH || 50 Ω 70 (100) A single
NNHV 8123-200 V-LISN 5µH || 50 Ω 200 A single
NNHV 8123-400 V-LISN 5µH || 50 Ω 400 A single
NNBM 8124 V-LISN (5µH + 1 Ω) || 50 Ω 70 (100) A single N-connector
NNBM 8124-200 V-LISN (5µH + 1 Ω) || 50 Ω 200 A single N-connector
NNBM 8124-400 V-LISN (5µH + 1 Ω) || 50 Ω 400 A single N-connector
NNBM 8126 A 890 V-LISN 5 µH || 50 Ω 70 (100) A single DO-160
BAN 8508 8 A (DC) single
BAN 8530 30 A (DC) single
MIL
NNBL 8225 V-LISN (50 µH + 5 Ω) || 50 Ω 20 A single  
NNBL 8226 V-LISN (50 µH + 5 Ω) || 50 Ω 70 (100) A single  
NNBL 8226-HV V-LISN (50 µH + 5 Ω) || 50 Ω 70 (100) A single  
NNBL 8226-2 V-LISN (50 µH + 5 Ω) || 50 Ω 70 (100) A 2  
NNBL 8229-HV V-LISN (50 µH + 5 Ω) || 50 Ω 200 A single
NNBL 8230 V-LISN (50 µH + 5 Ω) || 50 Ω 300 A single  
NNBL 8240 V-LISN (50 µH + 5 Ω) || 50 Ω 800 (1000) A single
T-ISN
NTFM 8131 T-ISN 150 Ω ± 10% 3 A (AC)  2  
NTFM 8158 T-ISN 150 Ω ± 20 Ω 600 mA DC (pair)  2  
CAT5 8158 T-ISN 150 Ω ± 20 Ω 600 mA DC (pair)  2  
CAT3 8158 T-ISN 150 Ω ± 20 Ω 600 mA DC (pair)  2  
ISN S8 T-ISN 150 Ω ±20 Ω
150 Ω + 60 Ω /-45 Ω
1 A (DC)  8  
ISN S1 T-ISN 150 Ω ±20 Ω
150 Ω + 60 Ω /-45 Ω
1 A (DC) single  
Special – LISN
Pilot ISN 150 Ω ±20 Ω 1.4 A DC 2
ECSS LISN1 (1.5 µH) || 50 Ω 10 A 2
ECSS LISN 2 (2 µH) || 50 Ω 10 A 2
ECSS LISN 2 (0.7 µH) || 50 Ω 10 A 2
NPLC 8500 V-LISN 1 Ω 16 A single
PVDC 8300 PV-LISN
Universal
150 Ω common
100 Ω differental
50 A (100 A with opt. fans)  2 Fans
PVDC 8301 PV-LISN
Universal
150 Ω common
100 Ω differental
200 A  2  
TEMP 8400 Tempest-

V-LISN

1.4 kΩ 16 A  2 TEMP 8401

Datasheet NSLK 8127 – V-LISN 16A 
Datasheet NSLK 8126 – V-LISN 3phase 16A 
Datasheet NSLK 8128 – V-LISN 3phase 32A 

Schwarzbeck Product List