Atec ISN-T8-CAT6 User Manual

IMPEDANCE STABILIZATION NETWORK (ISN) FOR UNSHIELDED BALANCED PAIRS

ISN T8-Cat6

For use with one, two, three, or four

unscreened balanced pairs

CISPR 22, Ed.5.2, 2006 and EN 55022

Sept. 2006 (IEC/CISPR 22: 2005

modified) for Cat.6

1000BaseT and PoE application

Can be used as CDN for

IEC 61000-4-6 immunity tests

Impedance stabilization networks (ISN) are coupling/decoupling networks according to CISPR 22 (EN

55022) for measurement of conducted common mode disturbances of information technology equipment (ITE). The ISN is placed between the equipment under test (EUT) and the auxiliary equipment (AE) or load which is necessar y for the operation of the EUT. The ISN establishes the common mode termination impedance seen by the telecommunication port during measurement.

The ISN T8-Cat6 is designed for measurements on up to four unshielded single balanced pairs shown at D.3 (ISN with high longitudinal conversion loss (LCL) for use with one, two, three, or four unscreened

balanced pairs) in CISPR 22, Ed.5.2, 2006 and EN 55022 Sept. 20 06 (IEC/CISPR 22: 2005 modiﬁ ed). The

longitudinal conversion loss (LCL)- requirements for the EUT-side is realized in relation to the cable category cat.6. No additional adapters are required. For other cable categories Teseq offers a different ISN with LCL adapters for cat.3 and cat.5 which is called ISN T8.

Technical specifications

Frequency range: 150 kHz to 80 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 : 400 mA (line), 800 mA (pair) Test voltage: 200 VDC, 2 sec Common mode impedance (EUT Port)

150 kHz to 30 MHz: 150 Ω ±20 Ω 30 MHz to 80 MHz: 150 Ω +60 Ω /-45 Ω Phase angle (EUT Port) 150 kHz to 30 MHz: 0° ±20°

Coupling path (In/Out-port/EUT)

Connection: BNC 50 Ω

RF voltage: <15 V Frequency range: 150 kHz to 80 MHz Voltage division factor (RF input to EUT port)

150 kHz to 30 MHz: 9.5 dB ±1 dB 30 MHz to 80 MHz: 9.5 dB ±2 dB

Transmission bandwidth* (wanted signal) EUT/AE: B3 dB 250 MHz sin. typical LCL* (EUT)

Cat. 6 150 kHz to 2 MHz: 75 dB to 74.4 dB ±3 dB Cat. 6 2 MHz to 30 MHz: 74.4 dB to 59.3 dB +6/-3 dB

Decoupling of common mode disturbances (EUT / AE)

150 kHz to 1.5 MHz: ≥35 dB to ≥55 dB

1.5 MHz to 30 MHz: ≥55 dB Crosstalk* (PSELFEXT) (EUT / AE) 1 MHz to 250 MHz: ≥61 dB to ≥15 dB *) all balanced parameters are in relation to a symmetrical load of 100 Ω

Mechanical specifications

Size (W x H x D): 105 x 65 x 110 mm³ Weight: approx. 550 g

Teseq GmbH

Lands berger Str. 255 · 12623 Berlin · Germany

T + 49 30 56 59 88 35 F + 49 30 56 59 88 34

desales@teseq.com www.teseq.com

82-248715 E02 J une 200 8

IMPEDANCE STABILIZATION NETWORK (ISN) FOR UNSHIELDED BALANCED PAIRS

ISN T8-Cat6

Application

Pin-arrangement for EIA /TIA T568B Pair 1/ Pair 2/ Pair 3/ Pair 4/ Pin 4,5 Pin 1,2 Pin 3,6 Pin 7,8 Token ring, ISDN basic rate access / S0 RJ45 X X ISDN primary rate access (2Mbps) RJ45 X X 10BaseT, 100BaseTX RJ45 X X 100BaseT4, 100Base VG-AnyLan, 1000BaseT RJ45 X X X X ATM, FDDI, TP-PMD RJ45 X X IBM 3270 RJ45 X

ISN T8-Cat6 with view to the EUT con-

nection RJ45

ISN T8-Cat6

EUT connection for RJ45

AE connection for RJ45

RF connection for measuring receiver or immunity test system

The described ISN T8-Cat6 is appropriate for immunity tests of IEC 61000-4-6. Optional available are the

parts for the level setting (test set-up calibration) CAL U100 (150 Ω /50 Ω adapter), 2 x SAR T802 (common mode adapter for RJ45) and TRA U150 (150 Ω termination).

Additional application

Delivery information

Part number Description

248715 ISN T8-Cat6 ISN for up to eight unshielded balanced lines for cable cat.6 97-248550 ISN T8-TC Traceable calibration (ISO17025), order only with ISN T8/ T8-Cat6 248580 CAS ISN Calibration kit for ISN T8 and ISN T4 248631 CAS ISN extension for cat.6 Adapter parts for calibration of ISN T8-Cat6, required CAS ISN 239901 CAL U100

Universal calibration unit (150 Ω /50 Ω adapter)

242428 SAR T802 Calibration adapter par t for ISN T8-Cat6 with RJ45 connector (common mode adapter) 239903 TRA U150 Universal termination resistor 150Ohm AE side *) The IEC/EN 61000-4-6 test set-up required 2x SAR T802.