AF Series

AF Series Coupling Decoupling Networks, commonly called CDN-AF in IEC-61000-4-6 conducted immunity standard serve the purpose of injecting common mode disturbances to DUT (Device under test) with un-shielded lines. It also decouples these signals so that it does not interfere with any auxiliary devices connected to the DUT.

The AF series CDNs are for Un-shielded cable applications and is specific to the number of conductors within the cable used by the DUT because the signal is coupled to each line within the cable. For example, it is not appropriate to couple noise onto a cable with 2 lines using a CDN that is designed for 3 lines. The proper noise level will not be injected into each conductor.

Com-Power several models matched to number of conductors within the cable. See the description of each model below.

All Com-Power CDN-AF series models have a frequency range of 150 kHz to 230 MHz. All the AF series CDNs have 2 mm shrouded banana sockets for DUT connection.

Brief description of each model is given below.

CDN-AF2 : For two conductor un-shielded cables.

CDN-AF4: For four conductor unshielded cables

CDN-AF8: For eight conductor unshielded cables.

Test Level calibration accessories

In order to calibrate AF series CDNs and set the test levels you require, specific shorting adapters and a set of 150Ω to 50Ω adapters (ADA-515-X) are required. We recommend purchasing these adapters from Com-Power since they will be needed to calibrate the test levels prior testing the actual product. Typical test levels given in IEC-61000-4-6 are 1, 3 and 10V RMS. The level setup diagram in given the product manual. Com-Power has put together a test system including power amplifiers, directional couplers, attenuator, etc.

Calibration

All Com-Power AF series CDNs are supplied with calibration traceable to the SI through NIST or recognized National Metrology Institute. Com-Power also offers ISO-17025 accredited calibration.