Coupling Decoupling Networks (CDN's)

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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

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.

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Coupling Decoupling Networks (CDN's) Categories

Telecom Surge CDN's
Telecom Surge CDN's
3-Phase Surge CDN's
3-Phase Surge CDN's
RF Power Line CDN's
RF Power Line CDN's
RF Data Line CDN's
RF Data Line CDN's
Injection Transformers
Injection Transformers
Capacitors
Capacitors

Coupling Decoupling Networks (CDN's) Test Equipment, Systems & Solutions

  • CDN-KIT1000 ED3

    EMC Partner CDN-KIT1000 ED3

    SKU: 35425

    Standard: IEC 61000-4-5
    Application: surge on 2 unsymmetrical lines
    Test level surge: max. 6 kV
    EUT voltage per line: max. 200 V DC or 240 V peak
    EUT current per line: max. 4 A cont. or 5 A for 5 min.
    Typically In Stock
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  • Haefely PCD 130 3 Phase Coupling/Decoupling Network for PSURGE 8000

    Haefely PCD 130 3 Phase Coupling/Decoupling Network for PSURGE 8000

    SKU: sku-444

    Weight: 69 kg (net weight)
    Combination wave pulse 1, 2/50 - 8/20 μs (Hybrid-Surge pulse): Pulse conforms to IEC/EN 61000-4-5
    Coupling: 3 Phase - 32 Amps, 690 VAC
    Dimensions: 45 x 50 x 57 cm (W x H x D)
    General Data: Technical Details
    Phase synchronization: 1° steps
    Polarity: pos / neg
    Pulse current (short circuit): 32A RMS
    Pulse voltage (open circuit): 690V RMS (Phase-Phase) 110V DC
    Standards Met: IEC 61000-4-5 Ed. 1 & 2 and ANSI C62.41 and C62.45
    In Stock
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  • Teseq CDN S751A 75 Ohm BNC RF Coupler for IEC 61000-4-6 Testing

    Teseq CDN S751A 75 Ohm BNC RF Coupler for IEC 61000-4-6 Testing

    SKU: sku-851

    Weight: 1.5 kg (3.3 lbs)
    Common Mode Impedance: 150 kHz to 26 MHz: 150 Ω ±20 Ω; 26 MHz to 230 MHz: 150 Ω +60 Ω / -45 Ω
    Current Rating: 1000 mA maximum
    Decoupling of Common Mode Disturbance: 150 kHz: Over 60 dB; 1.5 MHz: Over 60 dB; 30 MHz: Over 50 dB; 230 MHz: Over 40 dB (refer to data sheet for some exceptions)
    Dimensions: 4 x 4 x 9.5 inches (10 cm x 10 cm x 24 cm); (CDN HDMI and CDN S752A: 28.8 cm 11 inches)
    Frequency Range: 150 kHz to 230 MHz
    Mains & EUT Connections: BNC 75 Ω
    RF Connector: BNC 75 Ω
    RF Input Voltage: 20 Volts Max
    Standards Met: IEC 61000-4-6
    Voltage Division Factor: 10 dB ±1 dB to 80 MHz, 10 dB +3, -2 dB from 80 MHz to 230 MHz
    Voltage Rating: AC max. voltage (line to ground): 250V; DC max. voltage (line to ground): 400 V; Test voltage: 200 V - 750 V DC, 2 sec (refer to data sheet for exact model specifications)
    $1,245.00
  • Haefely DEC 6 Decoupling Network for Symmetrical Data and Control Lines

    Haefely DEC 6 Decoupling Network for Symmetrical Data and Control Lines

    SKU: 0481

    Weight: approx. 2 kg net
    Coupling: Decoupling elements Resistors 200 Ohm
    Dimensions: 30 x 20 x 16 cm (w x h x d)
    DUT current: Current on EUT lines max. 0.1A
    Pulse amplitude: max. 6.6kV
    Pulse Shape: 10/700us -5/320us 1.2/50us - 8/20us 100kHz ring wave
    Test Voltage: Voltage on EUT lines max. 72V DC or 50V AC,RMS (with gas arrestors as protection elements) max. 144V DC or 100V AC,RMS (with ABDs as protection elements)
    $250.00 - $1,500.00
    In Stock
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  • 3ctest SEPN Series CDN's for Surge & Burst, Single Phase 3-wire, Three Phase 5-wire

    3ctest SEPN Series CDN's for Surge & Burst, Single Phase 3-wire, Three Phase 5-wire

    SKU: sku-561

    Polarity: +/-
    Weight: approx. 50Kg
    Burst (EFT) 5/50 ns: Pulse conforms to IEC/EN 61000-4-4
    Burst frequency: 0.1kHz–1000kHz
    Combination wave pulse 1, 2/50 - 8/20 μs (Hybrid-Surge pulse): Pulse conforms to IEC/EN 61000-4-5
    Dimensions: 19 inch/6U
    Impedance: 2 ohm (output)
    Oscillation Frequency: Current waveform: Front time: 8us±20%, time to half value: 20us±20%
    Polarity-2: +/-/alternative
    Pulse amplitude: 0.25 kV -4.8kV, ± 10%
    Pulse current (short circuit): 0.1kA–3kA，±10%
    Voltage: 0.2kV–6kV，±10%
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  • FTC-10 - 10µF Microfarad Feed-Thru Capacitor - The EMC Shop

    FTC-10 - 10µF Microfarad Feed-Thru Capacitor

    SKU: 30091

    Capacitance: 10 µF (Microfarad)
    Tolerance: ±10%
    Temperature: -55°C to +70°C @ rated voltage +105°C @ 50% of rated voltage
    Dissipation Factor: Less than 1% at 25°C (Measured at 120 Hz)
    Dielectric Strength: Twice the rated VDC @ 25°C for two minutes
    Inquire for Lead Time
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