CDN for Two Unscreened Balanced Pairs

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CDN-T4E

150 kHz to 230 MHz

CDN for Two Unscreened Balanced Pairs

Engineered for conducted immunity testing in accordance with IEC/EN 61000-4-6 and CISPR 16-1-2, the CDN-T4E enables controlled RF coupling onto two balanced unscreened conductor pairs used in data and communication ports.
Covers a 150 kHz to 230 MHz frequency range, ensuring full support of the conducted RF immunity spectrum specified by international EMC immunity standards.
Designed for cables with two unscreened balanced pairs, making it well suited for testing multi-pair interfaces such as industrial Ethernet, communication, and control cables.
Implements the required 150 Ω common-mode impedance over the entire test band, meeting the impedance profiles defined by IEC/EN 61000-4-6 and CISPR 16-1-2.
Supports up to 40 V RF injection and 2 A continuous current, allowing stable and safe application of immunity test levels without overstressing the EUT or test setup.
Equipped with RJ45 connectors for EUT and auxiliary equipment connections and a 50 Ω BNC RF input, simplifying integration into standard conducted immunity test configurations.
Supplied with individual calibration, including a specified voltage division factor, to support accurate, repeatable, and traceable establishment of calibrated drive levels.
Applies RF common-mode disturbances simultaneously to two balanced unscreened pairs while preserving uninterrupted data communication between auxiliary equipment such as network simulators or switches and the EUT.
Used to evaluate the immunity of products with multi-pair communication interfaces, including industrial Ethernet devices, networked controllers, automation equipment, and communication modules.
Supports pre-compliance troubleshooting and formal compliance testing, helping engineers identify RF susceptibility on communication ports early in the product development cycle.
Widely deployed in EMC test laboratories and manufacturer in-house facilities to validate conducted immunity performance before certification and market release.
Forms part of a complete conducted immunity solution when used with Com-Power ADA-T4/T8 shorting adapters, ADA-515-2 150 Ω to 50 Ω adapter sets, TEP-050 50 Ω terminator, and Com-Power ACS series power amplifiers.

Frequency Range 150 kHz to 230 MHz
Designed for IEC / EN 61000-4-6
Two unscreened, balanced pairs
Individual calibration included
Three Year Warranty

Product Name: Coupling Decoupling Network (CDN)
Compliant Test Standards: IEC / EN 61000-4-6
Application: Two unscreened, balanced pair
Frequency Range: 150 kHz to 230 MHz
RF Input Voltage: 40 V (Max)
RF Input Connector: 50 Ω BNC (Female)
Voltage Rating: 124 V AC / 125 V DC (Line to Ground)
Current Rating: 2 Amps (Max)
AE and EUT Connections: RJ 45
Common Mode Impedance:
150 kHz - 26 MHz: 150Ω ± 20Ω
26 MHz - 80 MHz: 150Ω + 60Ω / – 45Ω
80 MHz - 230 MHz: 150Ω + 60Ω / – 60Ω
Voltage Division Factor: 9.5 dB +4 / -1
Decoupling of Common Mode Disturbance:
- 150 KHz ≥ 45dB (RF/AE)
- 500 KHz ≥ 50dB (RF/AE)
- 230 MHz ≥ 50dB (RF/AE)
Dimensions: 8.5 x 4.5 x 3.5 inches or 21.5 x 11.4 x 8.8 cm
Weight: 5 lbs. or 2.3 kg
Accessories Available from Com-Power for setting test levels and running the test:
- ADA-T4/T8 shorting adapters
- ADA-515-2 150 Ω to 50 Ω adapters
- TEP-050 50 Ω Terminator
- ATTN-6-100W Power Attenuator
- DCU-300-100W Directional Coupler
- ASC series Power Amplifiers