Coupling Decoupling Network for 75 Ohm Coaxial Cable

The CDN-C75E Coupling Decoupling Network is designed to test products that utilize 75-ohm coaxial cables for data communication.

• Developed for conducted immunity testing on 75 Ω coaxial signal and data ports, compliant with IEC/EN 61000-4-6 and CISPR 16-1-2, enabling controlled RF disturbance coupling on coaxial interfaces.
• Supports a frequency range of 150 kHz to 230 MHz when operating as a Coupling/Decoupling Network, covering the full conducted RF immunity spectrum required by IEC/EN 61000-4-6.
• Optimized for coaxial cables with a nominal 75 Ω transmission line impedance, commonly used in video, broadcast, instrumentation, and telecommunications signal paths.
• Provides the specified 150 Ω common-mode impedance across the test frequency range, meeting impedance and phase performance requirements defined by IEC/EN 61000-4-6 and CISPR 16-1-2.
• Accommodates up to 40 V RF input voltage with a maximum current rating of 1 A, allowing stable injection of immunity test levels while maintaining safe operating margins.
• Equipped with 75 Ω BNC connectors for the EUT and auxiliary equipment ports and a 50 Ω BNC RF input, enabling direct connection to coaxial interfaces without cable modification.
• Constructed with a rugged metal enclosure bonded to a conductive stainless-steel base plate, ensuring effective grounding and repeatable performance during conducted immunity testing.
• Supplied with individual NIST-traceable calibration, including a defined voltage division factor, supporting accurate, repeatable, and traceable establishment of calibrated drive levels.
• Applies RF common-mode disturbances onto 75 Ω coaxial communication lines while maintaining isolation and uninterrupted signal flow between auxiliary equipment and the EUT.
• Well suited for real-world immunity evaluation of products using 75 Ω coaxial interfaces, such as broadcast video equipment, CCTV systems, cable distribution hardware, RF receivers, instrumentation, and professional audio-video devices.
• Allows manufacturers to verify conducted immunity robustness of coaxial ports under operational conditions, ensuring products continue to function correctly when exposed to RF disturbances on signal lines.
• Integrates into complete conducted immunity test systems when used with Com-Power 150 Ω to 50 Ω adapters, 50 Ω terminators, appropriate attenuators or directional couplers, and Com-Power ACS series power amplifiers, providing a comprehensive solution for 75 Ω coaxial-port immunity testing.