Coupling/Decoupling Network for Surge Testing on Unshielded Unsymmetrical Communication Lines

CDN 21AF8

The CDN 21AF8 is designed to couple surge pulses onto 8 lines (4 pairs) unshielded unsymmetrical communication lines for voltage up to 6 kV and max. transmission rate is 10 Mbit/s. It fully meets the requirement of ITU-T K.20, ITU-T K.21, ITU-T K.44, ITU-T K.45, GB/T 17626.5 and YD/T 993.

Data transmission stays stable throughout the test, accurately reproducing the actual communication status of the device, and ensuring repeatable and accurate test results.

Test Connection Diagram

Design Diagram

As per IEC 61000-4-5：2017  Figure 9

> Max. peak voltage is 6 kV

> Max. transmission rate is 10 Mbit/s

> Compatible with all brands of EMC generators without additional adaptation

> Excellent decoupling performance, no extra protection required for auxiliary equipment

> Coupling Waveforms are 1.2/50 μs and 8/20 μs

> Line-to-Line / Line-to-Ground