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CDN A801 data sheet - .PDF file.

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CDN HDMI data sheet - .PDF file.

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CDN USB3 data sheet - .PDF file.

Teseq has expanded its line of coupling/decoupling networks (CDNs) for EMC RF conducted immunity testing, according to IEC/EN 61000-4-6, with several new models, including CDN USB 3.0, CDN HDMI, CDN S502, CDN S752 and CDN A801.

CDN USB 3.0 is designed for use with shielded USB cables and offers testing of all existing USB interfaces, while CDN HDMI is designed for screened multimedia cables and can be used in all high-speed HDMI applications including DVD players, Blu-Ray DVD, gaming systems, cameras, camcorders and cable TV decoders.

Both CDN S502 and CDN S752 allow testing on coaxial 50Ω and 75Ω interfaces. 

Teseq’s new eight-line CDN, the CDN A801 — from 150kHz to 300MHz — and CDN A801-10 — from 10kHz to 80MHz — are designed for testing unscreened and unbalanced control interfaces.

Click on the links above to download data sheets for Teseq’s new CDNs.

Product information


  • Compatible with USB versions 1.0, 1.1, 2.0 and 3.0
  • Fitted with a nine-pin A-type connector on equipment-under-test (EUT) and auxiliary equipment (AE) ports
  • Allows higher transfer rates of up to 4.8Gb/s, increased maximum bus power, and now full-duplex data transfers
  • Improves the interaction between the device and host computer
  • Capable of testing all the latest USB technology, including digital cameras, high-definition displays, high-end solid-state drives and RAID arrays


  • Fitted with an HDMI A-type connector on EUT and AE ports
  • All 19 pins are connected for compatibility with high-speed HDMI version 1.4 with HDCP, HEC (Ethernet), ARC and DSC

CDN S502/CDN S752

  • Fitted with N-type connectors on EUT and AE ports
  • High-performance, double-screened cable within the CDNs allows for the most consistent test results
  • Also available are 50Ω and 75Ω CDNs with BNC connectors

CDN A801/CDN A801-10

  • Fitted with 4mm banana connectors on EUT and AE ports, which allow them to be easily adapted to a variety of control interfaces such as RS-232, RS-422, RS485 or custom interfaces

Teseq — EMC test solutions: combining tradition and experience with dynamic and innovative development 

Teseq is the new name of the Test Systems Division that belonged to the Swiss-based Schaffner Group until it became an independent company after a management buyout in 2006.  

Teseq has retained all of the former Schaffner Division’s management and employees ensuring business continuity, commitment to existing and new customers and a dynamic approach to new product development.  

Teseq also continues to stand for customised client support, proven products and extensive know-how. The company’s focus on its core business — EMC test solutions — will be reinforced by greater attention to innovation in the area of research and development. The streamlined size of the enterprise ensures maximum independence, agility and flexibility.  

Teseq offers standalone products and complete solutions for EMC conducted immunity testing including: ESD generators; harmonics; flicker and power quality test systems. It also provides a complete range of EMC radio frequency test equipment from measuring receivers, power amplifiers and GTEM cells to very powerful software for the automation of EMC test houses.    

Teseq’s extensive knowledge of EMC systems can be found in more than 90 countries worldwide with hundreds of systems installed in applications such as automotive, military, telecoms, commercial and medical.  

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