Coupling Decoupling Network for 75 Ohm Coaxial Cable
- ▸ 75 Ω coaxial CDN/ISN, 150 kHz–230 MHz — dual-purpose IEC 61000-4-6 conducted immunity / CISPR 22 / 32 conducted emissions network for 75 Ω video and broadband signal cables.
- ▸ 75 Ω BNC EUT and AE ports plus 50 Ω BNC RF injection port — impedance-matched coupling for video and broadband signals; the impedance distinction from C50E is critical for signal-integrity preservation.
- ▸ 1 A max current, 310 VAC / 440 VDC voltage rating — supports DC-powered cable systems including line-powered amplifiers and CCTV camera power feeds.
- ▸ CCTV and security video equipment — analog CCTV cameras, DVRs, video distribution amplifiers, and surveillance head-ends using 75 Ω BNC video connections.
- ▸ Broadcast and professional video equipment — SDI/HD-SDI distribution amplifiers, video routers, and broadcast monitoring equipment requiring 75 Ω immunity and emissions qualification.
- ▸ Cable TV and broadband service equipment — DOCSIS modems, set-top boxes, and cable head-end equipment with 75 Ω F or BNC connections (with adapter).
- ▸ Test instruments with 75 Ω ports — signal-level meters, return-loss bridges, and broadband measurement equipment requiring CISPR 32 / IEC 61000-4-6 conformance.
- ▸ NIST-traceable individual calibration with three-year warranty — ISO/IEC 17025 accredited calibration optional; ADA-515-X 150 Ω / 50 Ω adapters available separately for IEC 61000-4-6 level setting; dual CDN/ISN function consolidates two test setups into one purchase.
CDN-C75E Features
- ▸ Screened-line CDN for 75 Ω coaxial — injects common-mode disturbance into the cable shield per IEC 61000-4-6 for conducted RF immunity testing
- ▸ 75 Ω BNC (female), EUT & AE EUT and AE connections for direct, in-line cable insertion
- ▸ Frequency range 150 kHz to 230 MHz — full IEC 61000-4-6 standard band including the extended-band test region up to 230 MHz
- ▸ 1 A maximum continuous current at 310 VAC / 440 VDC for power-over-data and bus-powered devices
- ▸ Voltage division factor: 9.5 dB — well-defined coupling per IEC 61000-4-6 for accurate test-level setting
- ▸ ≥ 50 dB EUT/AE isolation protects auxiliary equipment from the injected RF disturbance
- ▸ 50 Ω BNC (female) RF injection port — direct mate with immunity-test power amplifier through standard 50 Ω coax
- ▸ 40 Vrms maximum RF input — supports IEC 61000-4-6 test levels of 1, 3, and 10 Vrms with margin
- ▸ Dual-use as ISN for emissions testing — also usable as Impedance Stabilization Network for conducted emissions per CISPR 22 / CISPR 32, eliminating the need for two separate networks
- ▸ Typical use: 75 Ω coax signal/data ports (video, broadcast, CCTV)
- ▸ NIST-traceable individual calibration with ISO/IEC 17025 accredited calibration available on request
- ▸ Compatible with ADA-515-X 150 Ω / 50 Ω calibration adapters for IEC 61000-4-6 test-level setting
- ▸ Three-year warranty — covers manufacturing and workmanship defects
CDN-C75E Specifications
| Parameter | Specification |
|---|---|
| Model | CDN-C75E |
| CDN Type / Cable Interface | S-Series Screened CDN — 75 Ω coaxial |
| Applicable Standards | IEC / EN 61000-4-6, CISPR 16-1-2 |
| Also Usable as ISN (Emissions) | Yes (per CISPR 22 / 32) |
| Frequency Range (CDN Use) | 150 kHz to 230 MHz |
| EUT / AE Connections | 75 Ω BNC (female), EUT & AE |
| RF Injection Port | 50 Ω BNC (female) |
| Max RF Input Voltage | 40 Vrms |
| Max Continuous Current (EUT/AE) | 1 A |
| Voltage Rating (Line to Ground) | 310 VAC / 440 VDC |
| Voltage Division Factor (VDF) | 9.5 dB |
| Decoupling / Isolation (EUT ↔ AE) | ≥ 50 dB |
| Typical Application | 75 Ω coax signal/data ports (video, broadcast, CCTV) |
| Calibration | NIST-traceable; ISO/IEC 17025 accredited optional |
| Warranty | 3 years |
Test-level setup: ADA-515-X 150 Ω to 50 Ω calibration adapters (sold separately) are required for setting IEC 61000-4-6 test levels (typically 1, 3, and 10 Vrms) prior to testing the EUT.
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