BALUN TRANSFORMERS -

C.I.S.P.R. 17/IEC 1981 MEASUREMENTS

The C.I.S.P.R. 17/IEC 1981 (“CISPR 17”) standard

describes the method of insertion loss measurement

of passive radio-frequency suppression filters, i.e.,

how useful the filter is in reducing noise.

For balanced filters, North Hills’ Model NH16434

­converts­the­unbalanced­50Ω­generator­impedance­to­

a­0.1Ω­balanced­source­impedance.­­

For unbalanced filters, North Hills’ Model NH16435

provides­a­0.1Ω­unbalanced­source­impedance.

*North Hills Application Note 164 - “C.I.S.P.R. 17 Transformers

Application Note” provides further information on the subject of

insertion loss measurement of passive radio-frequency suppression

filters.

Features:

Return Loss better than 20 dB

Signal Loss 45 dB max

All case styles are hermetically sealed

metal cans

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Benefits:

High common mode injection

Precision-engineered

Optimized for C.I.S.P.R. 17/IEC 1981

measurements

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North Hills NH16434 optimized for C.I.S.P.R 17/IEC 1981 measurements

ISO 9001:2000 Certified

North Hills

™

Signal Processing

A Porta Systems Company

6851 Jericho Turnpike, Suite 170

Phone: [phone]

Syosset, NY 11791

Fax: [phone]

A Leading Provider of Measurement and Connectivity Solutions

www.northhills-sp.com

North Hills

™

Signal Processing

A Porta Systems Company

Model# NH16434

BALUN TRANSFORMERS - C.I.S.P.R. 17/IEC 1981

Optimized for C.I.S.P.R 17/IEC 1981 measurements

ORDERING INFORMATION:

Simplified Schematics:

6851 Jericho Turnpike, Suite 170

Phone: [phone]

Syosset, NY 11791

Fax: [phone]

A Leading Provider of Measurement and Connectivity Solutions

www.northhills-sp.com

North Hills

™

Signal Processing

A Porta Systems Company

Model# NH16435

Case Styles:

Model# NH16435

NH-WB-DAT-8/07

Model# NH16434

Model

Impedance

Frequency

Range

Return Loss

Signal Loss

NH16434

50Ω­Unbalanced/0.1Ω­Balanced

10 kHz - 30 MHz

Better than 20 dB

1

45 dB Max.

NH16435

50Ω­Unbalanced/0.1Ω­Unbalanced

10 kHz - 30 MHz

Better than 20 dB

1

45 dB Max.

Case & Cover:

Cold Rolled Steel

Finish:

Hot Tin Dip

Terminals:

ø.040 PC board mount solderable pins

Material­Specifications:­

(unless­otherwise­specified)

1

At 50 ohm input