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ISN T8

Impedance Stabilization Network (ISN) for Unscreened Balanced Pairs

ISN T8zoom
  • For use with one, two, three, or four unscreened balanced pairs
  • Refers schematic circuit example in CISPR 22/32 Figure D.3/G.3
  • Intended for connection to cable category 3 and 5
  • 1000BaseT and PoE application
  • Changeable pin-arrangements with RJ11 and RJ45
 

Impedance stabilization networks (ISN, or with CISPR 16-1-2 called AAN: asymmetric artificial network) are defined for measuring of conducted common mode disturbances at information technology equipment (ITE) as required in CISPR 22 and CISPR 32. The ISN is placed between the equipment under test (EUT) and auxiliary equipment (AE) or load which are necessary for the operation of the EUT. The ISN establishes the common-mode termination impedance for the EUT’s telecommunications port during measurement and emulates the unsymmetrical contribution (longitudinal conversion loss, LCL) of the connected line. Different ISNs are available in relation to the line category, line numbers and pin-arrangement.

The ISN T8 is designed for measurements on up to four unscreened single balanced pairs and consists of one basic network (ISN T800) with D sub 25 connectors and special adapter sets. A set of adapters consists of two pieces of LCL adapters to arrange the lines and realize longitudinal conversion loss (LCL)- requirements for the EUT-side in relation to the use cable category (cat. 3, cat. 5) and one piece of connection adapter arranges the lines for the AE-side. Teseq offers two different adapter sets – ADS T800 and ADS T8x0. ADS T800 gives the connection to RJ45 sockets with pin-arrangements of EIA/TIA T568A respectively T568B. The adapter set ADS T8x0 offers changeable pin-arrangements via 1 mm banana connectors for each pin combination of RJ11/RJ45.

 
Parameter Value
Frequency range

150 kHz to 30 MHz

Line parameters

1 up to 4 pair(s)

Power rating (EUT- and AE Port)

AC max. voltage (line to ground): 63 V
DC max. voltage (line to ground): 100 V
Current max.: 600 mA (line), 1200 mA (pair)
Test voltage: 200 VDC, 2 sec

Common mode impedance (EUT Port) 150 kHz to 30 MHz

150 Ω ±20 Ω

Phase angle (EUT Port) 150 kHz to 30 MHz

0° ±20°

  • Related Accessories

    Description

     
  • CAS ISN

    Calibration Kit for ISN T

  • FIX ISN

    Magnetic fixture for ISN T2A, ISN T4A, ISN T8, ISN T8-Cat6 or CDN T8

Datasheet

Gallery

 
 
 
 

Imprint

AMETEK CTS GmbH
Sternenhofstr. 15
4153 Reinach, Switzerland
Tel.+ 41 61 204 41 00
marketing.cts@ametek.com

Managing Directors:
Manfred A. Bergsch
Astrid Wälchli Schreiber
VAT-ID: CHE-179.452.414
Register of companies: CH-280.4.015.069-3


 
 
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