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.

Coupling Decoupling Networks (CDN's) Categories

Injection Transformers

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

Teseq CDN ST08 Coupling Decoupling Network

SKU: 8413

Frequency Range: 10 kHz to 80 MHz

Application: CDN for screened eight lines with RJ45 connector

Current Rating: 1000 mA

EUT Connector: BNC 50 Ω

Common mode impedance (EUT Port) 10 kHz to 26 MHz: 150 Ω ±20 Ω

Common mode impedance (EUT Port) 26 MHz to 80 MHz: 150 Ω +60 Ω /-45 Ω

RF Voltage: <20 V

Cost New:

Was:

Price Now:

$1,600.00

Typically in Stock
3ctest TPT-7637-4C100 Coupling Transformer ISO 7637-4 Pulse B

SKU: 8736

Frequency Range: 1 kHz – 300 kHz

Max Unsaturated Voltage: 100 @ f ≥ 1 kHz

Max Current: 32

EUT Max Current: 100

Applications: EMC Testing on EV - Electric Vehicles, Batteries, and Charging Stations

Test Standards: ISO 7637-4

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CDN-M3-32A-HV AC + DC 1000V RF Coupling/Decoupling Network

SKU: 12165

Application/Test Type: unscreened supply lines (mains) AC + DC, RF Conducted Disturbances

Current Rating: up to 32 Amps

Max Voltage: up to 1,000 Volts

Frequency Range: 150 kHz to 230 MHz

Mains & EUT Connections: banana sockets

RF Connector: 50 Ω BNC (Female)

Standards Met: IEC / EN 61000-4-6

Associated Equipment: RF Conducted Immunity Test Systems

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Teseq CDN M532 5-Line/32 Amp RF Coupling/Decoupling Network

SKU: 12093

Associated Equipment: RF Conducted Immunity Test Systems

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: 32 Amps Maximum

Decoupling of Common Mode Disturbance: Greater than 30 dB

Dimensions: 6.3 x 6.3 x 20 inches (16.0 cm x 16.0 cm x 50.0 cm)

Insertion Loss: Greater than 0.1 dB

Mains & EUT Connections: 4 mm, safety (Optional IEC 320 16A)

RF Connector: BNC, 50 Ω

RF Input Voltage: Less than 30 V

Standards Met: IEC 61000-4-6

Voltage Division Factor: 10 dB +3 dB / -1 dB

EMC Test Standard: IEC/EN 61000-4-6

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Schwarzbeck CDN S19 HDMI Coupling Decoupling Network

SKU: 8418

Frequency Range: 150 kHz - 230 MHz

Max. RF Test Voltage: 30 V

Max. RF Input Power: 6 W (continuous)

RF Input Connector: 50 Ω BNC female

EuT, AE Connectors: HDMI female

Test Standards: IEC/EN 61000-4-6

Associated Equipment: RF Conducted Immunity Test Systems

Cost New:

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Price Now:

$230.00

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3ctest CDN ST8 Coupling/Decoupling Network For Shielded Symmetric Line

SKU: sku-1702

Frequency Range: 150 KHz - 230 MHz

Max. AC voltage (line to ground): 100 V

Max. DC voltage (line to ground): 150 V

RF Input Port: <20V (BNC)

Standard Met: IEC 61000-4-6

Cost New:

Was:

Price Now:

$1,195.00

Lead time 10-12 weeks
Schwarzbeck CDN USB-C Coupling Decoupling Network for IEC 61000-4-6

SKU: 8420

Associated Equipment: RF Conducted Immunity Test Systems

Test Standards: IEC/EN 61000-4-6

Frequency Range: 150 kHz - 230 MHz

Common Mode Impedance: 150 kHz – 24 MHz: 150 Ω ±20 Ω, 24 MHz–80 MHz: 150 Ω +60 Ω / -45 Ω, 80 MHz–230 MHz: 150 Ω ±60 Ω

Max. RF-Test Voltage (emf): 30 Volts

RF-input-power: 6 W (continuous)

RF-input-connector: 50 Ω BNC (female)

Cost New:

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$220.00

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3ctest CDN 418TH8 CDN For Unshielded Symmetric High-Speed

SKU: sku-1116

Communication Frequency: 10 MHz, 100 MHz, 1000 MHz, 10 MB, 100 MB, 1000 MB

Standard Met: IEC 61000-4-8

Pulse Voltage: 4 kV

Coupling Mode: 4-pair unshielded symmetric

Connector: RJ45 female connector

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3ctest SGN 3483T Three-Phase Coupling/Decoupling Network

SKU: sku-1111

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3ctest SPN/SEPN/EFTN Series Coupling/Decoupling Network

SKU: sku-1110

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Teseq (Schaffner) CDN 163 3-Phase, 100 Amp EFT/Burst Coupling Network

SKU: 1064

Applications: Electrical Fast Transient Immunity

Test Standards: IEC/EN 61000-4-4

Industry: EMC Precompliance Testing, CE Marking, Medical Devices, Industrial Machinery, Electronics & IT

For Use With: Any Burst/EFT Generator

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EFT-DLC EFT/Burst Capacitive Coupling Clamp for Data Lines

SKU: 1780

Application/Test Type: Electrical Fast Transients on Data Lines (EFT Burst)

Built in Accordance to: IEC 61000-4-4

Coupling Length: 1 m (39.4 in)

Compatible Impulse Generators: Any EFT/Burst Generators (custom HV cable may be required)

RF Connector: Fischer HV Connector

Voltage Rating: up to 5.0 kV

Cost New:

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Price Now:

$195.00

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