IEC/EN 61000-4-6 specifies the design and performance of a range of coupling/decoupling networks (CDNs). Each CDN is specific to the type of cable and the intended signal carried on the cable. The CDN M series is used to inject the RF disturbance on the main line (supply). Teseq offers a CDN M1 for one line PE application in the frequency range from 10 kHz, as required in NAMUR NE 21, to 80 MHz. Teseq CDN M1 comply fully with the requirements of the standard and provide a simple, reliable and safe method of injecting RF energy into the equipment under test (EUT).