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Coupling Decoupling Networks (CDN's)

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Coupling Decoupling Networks (CDN's)

 

The EMC Shop stocks coupling decoupling networks (CDN's) for most power and data line configurations. CDN's are quintessential for performing EMC testing. In short, conducted immunity coupling networks ensure electrical transients are sent down the path of the line to the EUT. Decoupling that signal from entering the rest of the network is done in different ways. In radiated immunity, you are coupling wireless signals over the air through the antenna. It may be appropriate to use a decoupling clamp on lines as they exit the test chamber.



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Coupling/Decoupling networks are built in to most current generators for single phase power EUT. Coupling networks are typically easy to set up for conducted immunity (surge, EFT, PQF). RF conduted immunity requires an assortment of couplers and without proper setup, are easy to blow up.

Type's of Coupling Decoupling Networks

  • CDN's for Surge/EFT Immunity: Power Lines and Data Lines
  • RF CDN's for Conducted Immunity: Power Lines and Data Lines: Used for just decoupling as well
  • EM Clamps: Inject and decouple RF disturbances
  • Absorbing Clamps: Just for decoupling RF disturbances on cables (Needed for BCI Testing)
  • Bulk Current Injection Probes: Used for just coupling RF noise

RF Conducted Immunity CDN Test Setup

Coupling Decoupling Networks (CDN's) - The EMC Shop

 

Coupling/decoupling networks for RF conducted immunity have a port top-side where your inject the RF signal, an EUT side where the RF disturbances are directed to power or data lines. The decoupling path exit the AE Side and is generally safe from disturbances.

Coupling Decoupling Networks (CDN's) There are 51 products.

Subcategories

  • RF Power Line CDN's

    The EMC Shop stocks power line coupling decoupling networks for RF conducted immunity testing. The distubance signals are coupled to each conductor in the supply lines according to EN IEC 61000-4-6 standard. The standard M series CDNs have a current rating of 25 Amps. CDNs are available for power supplies from 1 to 5 conductors.

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    RF Power Line CDN's

    • M1 for one line
    • M2 for two lines
    • M2/3 switchable for two or three lines
    • M3 for three lines
    • M4 for lines and
    • M5 for five lines "-10 types" for frequency range 10 kHz to 80 MHz
    • "-3L and -3LN types" for connections without PE "-750V, -760V
    • -1000V types" for higher EUT voltages

  • RF Data Line CDN's

     

    The EMC Shop stocks data line coupling decoupling networks for RF conducted immunity testing. Order RF data line CDN's today. The EMC Shop specializes in RF conducted immunity testing to EN/IEC 61000-4-6 and other test standards. Calibrated S-Type coupling decoupling networks are in stock and avaialable to ship with turnkey RF test generators and systems.

     

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  • EM Injection Clamps

    The EMC Shop stocks EM injection clamps for RF conducted immunity testing, typically for IEC 61000-4-6. Rent or buy individual EM injection clamps or order a complete turn key system. Calibration adapters are also available upon request.



    Comparison Tool: Popular EM Injection Clamps



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    EM Injection clamps are used to inject a known level of RF signal onto the cabling of EUT at a test frequency and verify the EUT still performs accordingly. 



    Standards Using EM Injection Clamps

    • IEC 61000-4-6: international standard for most commercial electornics
    • IEC 60533: EMC for ships with a metallic hull
    • CISPR 24: Immunity requirements for information technology equipment (ITE)
    • IEC 60601-1-2: EMC requirements for medical equipment
    • IEC 61326-1: Immuniy and emissions for electrical equipment

  • EM Absorbing Clamps

    Capacitive coupling/absorbing clamps are used for measuring interference signals on power supply cables. Decoupling clamps and ferrite tube are available for a variety of different EMC applications.

  • Surge/EFT/PQF 3-Phase CDN's

    For large commercial products requiring three phase power at 240V, 480V or 600V. An additional CDN will required with the transient generators to complete IEC 61000-4-4, IEC 61000-4-5, ANSI C62.45 and other conducted immunity testing. The EMC Shop stocks 3 Phase coupling/decoupling networks for rental or purchase.

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    Three Phase CDN Diagram per IEC 61000-4-5

    Coupling/Decoupling Network Diagram for 3-Phase EUT per IEC 61000-4-5

    Three Phase CDN Coupler Applications

    EN/IEC 61000-4-5

    EN/IEC 61000-4-4

    ANSI (IEEE) C62.45

    EN/IEC 61000-4-11

    EN/IEC 61000-4-29

     

  • Surge Data Lines Surge CDN's

    The EMC Shop is an ISO 17025 accredited company. Contact us to rent of buy Data Lines Surge CDN's .

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    Data Lines Surge CDN's Standards:

    EN/IEC 61000-4-5

    EN/IEC 61000-4-4

    ANSI (IEEE) C62.45

    EN/IEC 61000-4-11

    EN/IEC 61000-4-29

     

  • CDN Calibration Accessories

    CDN Calibration accessories for compliance standards testing. The EMC shop carries a variety of CDN calibration accessories that are in stock and ready to ship!

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  • 3 Phase CDN's for EFT/Burst

    External coupling/decoupling networks are required for 3 Phase AC power line testing against electrical fast transients (burst). The EMC Shop stocks a variety of 3 Phase EFT/Burst manual CDN's that are immediately available to rent or buy.

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    Common Applications

    Teseq NSG 3040-EFT

    Teseq NSG 3060

    Burst/EFT Generators

  • EFT Coupling Clamps

    Capacitive coupling clamps are primarily used to inject fast transient and burst interference pulses into signal and data cables, i.e. into any type of connection to peripheral equipment. The IEC standard 61000-4-4 Ed. 3 also allows the capacitive coupling method to be used for pulse injection into ac and dc power lines when no appropriate decoupling network is available. The coupling capacitance (typically 100pF) between the coupling clamp and the cable inserted depends on the cable type, the diameter and other factors like screening, etc.



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    EFT Coupling Clamp Tests

     

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Showing 1 - 12 of 51 items
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    • Coupling / Decoupling Network
    • 16 Amps 
    • 150 kHz to 230 MHz
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    • Coupling/decoupling networks according to IEC/EN 61000-4-5 and IEC/EN 61000-4-12
    • Coupling via gas arrestor or 0.5 µF capacitor for Surge (3.3µF capacitor for Ringwave)
    • 20mH decoupling inductor per line
    • Differential mode or Common mode coupling selectable
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    • As per IEC 61000-4-5 Ed.3, Fig 10/A4, ITU K.44
    • For Test Pulse 1.2/50 - 8/20µs and 10/700µs
    • Coupling Via Gas Arrestor or Other Coupling
    • Built-in Matching Resistors
    • 20mH Decoupling, Current Compensated Pairs
    • Test Voltage up to 5kV
    • Line Voltage 50V
    • Line Current 1A
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    • CDN Coupling/Decoupling Network & ISN Impedance Stabilization Network in One
    • Refers schematic circuit example in CISPR 22/32 Figure D.3/G.3
    • 1000BaseT and PoE application
    • Can be used as CDN for IEC/EN 61000-4-6 immunity tests
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    • 3-Phase EFT, SURGE and Ringwave
    • 3-Phase AC Dips and Interrupts
    • DC Dips and Interrupts
    • Common Mode Short Testing
    • AC and Impulse Magnetic Fields

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    • Coupling/Decoupling Network (CDN) CDN M Type
    • Designed for IEC/EN 61000-4-6 Conducted RF Immunity Testing
    • CDN M016 switchable M2 or M3 (2 or 3 power lines)
    • Types with 4 mm banana sockets
    • 150kHz to 230 MHz (300 MHz)
    • Rent the Teseq M016 CDN
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    • AC (V): 600
    • DC (V): 1000
    • CDN M-Type
    • Coupling / Decoupling of disturbing signal to unscreened supply lines (mains) AC + DC
    • 150 kHz – 80 MHz
    • Suitable for IEC 61000-4-6
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    • Coupling networks designed for IEC/EN 61000-4-6
    • T series for unscreened balanced pairs of communication/data lines
    • 1 mm banana sockets for CDN T2-10 and CDN T4-10
    • D Sub 25 adapters to RJ11 and RJ45 sockets for CDN T2xxA, CDN T4xxA and CDN T8 products
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    • 5 power lines
    • Frequency range: 150 kHz to 230 MHz
    • Designed for IEC/EN 61000-4-6
    • AC Voltage: 300V Line to Ground / 520V Line to Line
    • DC Voltage: 400V Line to Ground / 600V Line to Line
    • Max Current 32 Amps
    • Test Voltage: 3.1 kVDC, 2 seconds
    • 4 mm banana sockets
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    • 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

    Rent Teseq ISN T8

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    • 150 MHz - 230 MHz Fequency Range
    • Designed for IEC / EN 61000-4-6
    • Two conductor power cable
    • Individual Calibration Included
    • Three Year Warranty
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Showing 1 - 12 of 51 items