| Brand | Schlöder GmbH |
|---|---|
| Standards | IEC 61000-4-6, NAMUR NE-21 |
| Frequency Range | 10 kHz – 230 MHz |
| Max Current | 125 A |
| Max Voltage | 1000 VAC |
| Line Types | Mains, signal, screened, RJ45, USB, HDMI, FireWire, CAN-BUS |
CDN Series Coupling/Decoupling Networks
Schlöder CDNs provide precise, repeatable coupling of conducted RF disturbances onto power, signal, and interconnection lines per IEC 61000-4-6 and NAMUR, while protecting auxiliary equipment from test signal interference. Available in multiple types — CDN-M (supply lines), CDN-AF (audio/PLC lines), CDN-T/RJ (communication cables), and shielded-cable variants (USB, HDMI, FireWire) — with a wide range of connectors, current ratings, and calibration adapters.
Key Features
- Compliant with IEC 61000-4-6 and NAMUR NE-21
- Frequency range from 10/150 kHz up to 230 MHz
- Broad model range: CDN-M, CDN-AF, CDN-T, CDN-RJ11/45, USB, HDMI, FireWire
- Current ratings up to 125 A, operating voltages up to 1000 VAC
- Defined asymmetrical impedance for high test repeatability
- Protects auxiliary/support equipment from test signals
- Modular calibration adapters, shared across multiple CDNs
- Custom models available on request
Typical Applications
- CE/EMC compliance testing
- Power supply & industrial control line immunity testing
- Communication & data line immunity testing (RJ45, USB, HDMI)
- NAMUR process instrumentation testing
- In-house pre-compliance & R&D testing
| Model | Description |
|---|---|
| CDN-L1 | 1 line,500VAC, 16A, 150kHz – 230MHz, 4mm MC jack, black; 1000 VDC |
| CDN-L1-32A | 1 line, 500VAC, 32A, 150kHz – 230MHz, 4mm MC jack, black; 1000 VDC |
| CDN-M1 | ground cable PE, 500 VAC, 150kHz–230MHz, 4mm jack, gn/yell; 1000 VDC |
| CDN-M1-10k | ground cable PE, 500 VAC, 10kHz – 230MHz, 4mm jack, gn/yell; 1000 VDC |
| CDN-M2 | 2 lines L + N, 500 VAC, 32 A, 150kHz – 230MHz; 1000 VDC |
| CDN-M2-10k | 3 lines L + N + PE, 500 VAC, 32 A, 10kHz – 230MHz; 1000 VDC |
| CDN-M2-125A | 2 lines L + N, 1000 VAC, 125 A, 150kHz – 80MHz; 1000 VDC |
| CDN-M2+3 | 2 + 3 lines, switchable, 500 VAC, 32 A, 150kHz – 230MHz; 1000 VDC |
| CDN-M2+3-10k | 2 + 3 lines, switchable, 500 VAC, 32 A, 10kHz – 230MHz; 1000 VDC |
| CDN-M3 | 3 lines L + N + PE, 500 VAC, 32 A, 150kHz – 230MHz; 1000 VDC |
| CDN-M3-10k | 3 lines L + N + PE, 500 VAC, 32 A, 10kHz – 230MHz; 1000 VDC |
| CDN-M3-L | 3 lines L, 500 VAC, 32 A, 150kHz – 230MHz; 1000 VDC |
| CDN-M3-L-10k | 3 lines L, 500 VAC, 32 A, 10kHz – 230MHz; 1000 VDC |
| CDN-M3-125A | 3 lines L + N + PE, 1000 VAC, 125 A, 150kHz – 80MHz; 1000 VDC |
| CDN-M3-L-125A | 3 lines L, 1000 VAC, 125 A, 150kHz – 80MHz; 1000 VDC |
| CDN-M4 | 4 lines 3 x L, 1 x PE, 500 VAC, 32 A, 150kHz – 230MHz; 1000 VDC |
| CDN-M4-10k | 4 lines 3 x L, 1 x PE, 500 VAC, 32 A, 10kHz – 230MHz; 1000 VDC |
| CDN-M4-N | 4 lines 3 x L, 1 x N, 500 VAC, 32 A, 150kHz – 230MHz; 1000 VDC |
| CDN-M4-125A | 4 lines 3 x L, 1 x PE, 1000 VAC, 125 A, 150kHz – 80MHz; 1000 VDC |
| CDN-M4-N-125A | 4 lines 3 x L, 1 x N, 1000 VAC, 125 A, 150kHz – 80MHz; 1000 VDC |
| CDN-M5 | 5 lines 3 x L, 1 x N, 1 x PE, 500 VAC, 32 A, 150kHz – 230MHz; 1000 VDC |
| CDN-M5-10k | 5 lines 3 x L, 1 x N, 1 x PE, 500 VAC, 32 A, 10kHz – 230MHz; 1000 VDC |
| CDN-M5-125A | 5 lines 3 x L, 1 x N, 1 x PE, 1000 VAC, 125 A, 150kHz – 80MHz; 1000 VDC |
| CDN-S1 | 1 screened line, connector BNC, 10kHz – 230MHz; 200 VDC |
| CDN-S1-75 Ohm | 1 screened line, 75 Ω connector BNC, 10kHz – 230MHz; 200 VDC |
| CDN-S2 | 2 screened lines, connector XLR, 10kHz – 230MHz; 200 VDC |
| CDN-S3 | 3 screened lines, connector XLR, 10kHz – 230MHz; 200 VDC |
| CDN-S4 | 4 screened lines, connector XLR, 5 pole, 10kHz – 230MHz; 200 VDC |
| CDN-S9 | 9 screened lines, connector 9-pol SUB-D, 10kHz – 230MHz; 200 VDC |
| CDN-S15 | 15 screened lines, connector 15-pol SUB-D, 10kHz – 230MHz; 200 VDC |
| CDN-S25 | 25 screened lines, connector 25-pol SUB-D, 10kHz – 230MHz; 200 VDC |
| CDN-AF2 | 2 unscreened non balanced lines, 2mm MC jacks,150kHz – 230MHz; 150 VDC |
| CDN-AF2-10k | 2 unscreened non balanced lines, 2mm MC jacks, 10kHz – 230MHz; 150 VDC |
| CDN-AF3 | 3 unscreened non balanced lines, 2mm MC jacks,150kHz – 230MHz; 150 VDC |
| CDN-AF3-10k | 3 unscreened non balanced lines, 2mm MC jacks, 10kHz – 230MHz; 150 VDC |
| CDN-AF4 | 4 unscreened non balanced lines, 2mm MC jacks,150kHz – 230MHz; 150 VDC |
| CDN-AF4-10k | 4 unscreened non balanced lines, 2mm MC jacks, 10kHz – 230MHz; 150 VDC |
| CDN-AF5 | 5 unscreened non balanced lines, 2mm MC jacks,150kHz – 230MHz; 150 VDC |
| CDN-AF5-10k | 5 unscreened non balanced lines, 2mm MC jacks, 10kHz – 230MHz; 150 VDC |
| CDN-AF6 | 6 unscreened non balanced lines, 2mm MC jacks,150kHz – 230MHz; 150 VDC |
| CDN-AF8 | 8 unscreened non balanced lines, 2mm MC jacks,150kHz – 230MHz; 150 VDC |
| CDN-T2 | 2 unscreened balanced lines, 2mm MC jack, 150kHz – 230MHz; 150 VDC |
| CDN-T2-10k | 2 unscreened balanced lines, 2mm MC jack, 10kHz – 230MHz; 150 VDC |
| CDN-T4 | 4 unscreened balanced lines, 2mm MC jack, 150kHz – 230MHz; 150 VDC |
| CDN-T4-10k | 4 unscreened balanced lines, 2mm MC jack, 10kHz – 230MHz; 150 VDC |
| CDN-T8 | 8 unscreened balanced lines, 2mm MC jack, 150kHz – 230MHz; 150 VDC |
| CDN-T8-10k | 8 unscreened balanced lines, 2mm MC jack, 10kHz – 230MHz; 150 VDC |
| CDN-RJ45 | unscreened lines, 8 pins, RJ 45 connector, 150kHz – 230MHz, up to 1 Gbit/s; 150 VDC |
| CDN-RJ45-10k | unscreened lines, 8 pins, RJ 45 connector, 10kHz – 230MHz, up to 1 Gbit/s; 150 VDC |
| CDN-RJ45-S | screened lines, 8 pins, screened RJ 45 connector, 10kHz – 230MHz, up to 10 Gbit/s; 150 VDC |
| CDN-HDMI | screened lines, screened HDMI connector, 10kHz-230MHz, HDMI 2.1; 150 VDC |
| CDN-Firewire | CDN for IEEE 1394 units, Firewire jack, 10kHz – 230MHz; 150 VDC |
| CDN-CAN-L4 | CDN for CAN-BUS, 9 pol SUB-D connector, 150kHz – 230MHz, 50 VDC |
| CDN-USB Type-C | CDN for central USB units, 10kHz – 230MHz, EUT side: USB-C female, AE side: USB-C female; 150 VDC |
| CDN-USB-3.0-P | CDN for USB 3.0, 10kHz-230MHz, EUT side: USB-A -> flat, AE side: USB-B -> square; 150 VDC |
| CDN-USB-3.0-Z | CDN for USB 3.0, 10kHz-230MHz, EUT side: USB-B -> square, AE side: USB-A -> flat; 150 VDC |
| CDN D 100 | 100 Ω resistor for direct injection with BNC connector / alligator clip, incl. calibration adapter |
Schlöder CDN Series Coupling/Decoupling Networks are precision accessories for conducted RF immunity testing per IEC 61000-4-6 and NAMUR NE-21. Each CDN couples the RF disturbance signal from the generator onto the line under test at a defined asymmetrical impedance, while simultaneously decoupling the auxiliary equipment — power supply, measurement instruments, or peripheral devices — from the test signal to prevent interference with the measurement. The CDN series covers virtually every line type encountered in EMC testing. The CDN-M range handles single- and multi-phase mains supply lines from 1 to 5 conductors, with current ratings up to 125 A and operating voltages up to 1000 VAC. CDN-AF and CDN-T types address unscreened balanced and unbalanced signal lines, while CDN-S types handle screened cables with BNC, XLR, and SUB-D connectors. Dedicated CDNs are available for RJ45, HDMI, FireWire, CAN-BUS, USB Type-C, and USB 3.0 interfaces. All CDNs in the range share a common calibration adapter system, reducing the investment in calibration tooling when multiple CDN types are used in the same laboratory. The 10 kHz variants extend coverage down to 10 kHz for NAMUR and low-frequency conducted immunity requirements.
Complete line coverage
CDN-M, CDN-AF, CDN-T, CDN-S, RJ45, USB, HDMI and more — one series for every line type.
Up to 125 A / 1000 VAC
High current and voltage ratings for industrial power line immunity testing up to 125 A.
NAMUR NE-21 compliant
Meets IEC 61000-4-6 and NAMUR NE-21 for process industry instrumentation immunity testing.
Shared calibration adapters
Common calibration adapter system shared across CDN types reduces laboratory tooling cost.
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