General

A line impedance stabilising network (LISN) is used to provide a defined impedance source on each input supply line to the EUT so that measurements of differential and common mode radio noise current can be made. The specified line impedance is conditional on the measurement socket being terminated with a 50W non-inductive resistor and the noise current is measured using a current probe.

Technical Specification

Model P2122 LISN is a three terminal device, one terminal earthed, to be series connected between the power source and the primary power input of the EUT. It is a robust, high stability unit which meets the impedance/frequency characteristics specified in DEF STAN 59-41 (PART 5)/2. A 10mF shielded capacitor is incorporated for performance and safety reasons. The measurement socket is externally terminated with a high-surge 50W coaxial resistor (also available from Cranage). The case of the LISN is bonded to the ground plane via four M8 screws.

Transfer Impedance
Frequency Range:        
Current:    
Primary Line Voltage:      
Inductance:                 
Connectors:          



Dimensions:


Material:                

20Hz to 400MHz (calibration data from 1kHz to 400MHz)
Up to 100A AC/DC
Up to 450V AC (850V DC)
5mH
Measurement (output): N-type bulkhead (50W)
Line (input): 6mm shrouded 'snap-lock'
EUT (input): 6mm shrouded 'snap-lock'
(6mm shrouded plugs supplied)
500 (l) x 180 (w) x 100 (h) mm
(500mm includes bolt-down mounting flange on base of unit)
Aluminium, alochrom treated, black durable paint finish on top surfaces.

LISN ordering details: Model P2122 (NATO: 5915 99 4487063)

Coaxial resistor ordering details: P2122-50R

Warranty on Lisns
All parts on these products are warranted by the manufacturer: Cranage EMC Technology Limited, Stable Court, Oakley, Nr. Market Drayton, Shropshire TF9 4AG: against defects in materials or workmanship for a period of 12 months from the date of purchase.