Line Impedance Stabilization Network

TNW-242F2 is a Line impedance stabilization network(LISN) used to measure interference voltage leaking from the interference sources due to the power supply line in the frequency range of 9kHz to 30MHz, in compliance with standards such as CISPR (International Special Committee on Radio Interference).
Additionally, by registering the correction factors of this device into radiation receiver manufactured by Kyoritsu Electronic Industry (KNM-2401, KNM-2402, KNM-2403, and KNM-S243), automatic addition can be performed through key operations, enabling direct reading measurement of interference voltage.

Basic Standard No：CISPR 16-1-2 / 9kHz ~ 30MHz

Model:

TNW-242F2

Maker:

Kyoritsu Technology Corporation

Specification

Frequency range	9kHz to 30MHz
Applicable standards	CISPR 16-1-2
Test standards	CISPR 11/ 13/ 14/ 15/ 32, VCCI, PSE
Number of phase	Single
Circuit type	50Ω
RF connector	50Ω（BNC female）
Power Line Rating	AC/DC 125V, 15A
Maximum Rating	AC/DC 250V, 15A
Standard accessories	Coaxial cable (BNCP-3D2W-BNCP, 2m) ・・・・・1pc. AC power cable (3m)　・・・・・・・・・・・・ 1pc.
Size / Weight	300(W)x130(H)x160(D)mm, approx.4.5kg
Available EMI test receiver	TNM-2401, TNM-2402

Options	High Pass Filter　　TFL-007, TFL-007D Fixed Attenuator TPD-402 (50Ω 10dB)

Precaution for use

1.Using a leakage current breaker on the power line may cause the breaker to trip.
Leakage current of AC100V, 50/60Hz, 400mA flows through the line.
[Countermeasures]
1) Use an isolation transformer.
2) Use a power line without a breaker installed.

2.When switching the measurement circuit, pulses are generated. When combined with a spectrum analyzer, there is a risk of damaging the input circuit of the spectrum analyzer.
[Countermeasures]
1) Using a high-pass filter TFL-007 or TFL-007D.
2) Switching after disconnecting the coaxial cable.
3) Following the requirements of the CISPR standard, inserting a 10dB attenuator inside or outside the lime impedance stabilization network to match the measuring terminals of the instrument to 50Ω. This model supports external attachment for this purpose.

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