Haefely PCD 121/122/126A Coupling Network

Coupling network for unshielded symmetrical (121/122) or asymmetrical signal lines in accordance with IEC/EN 61000-4-5/-4-12 and ITU K.44, testing of up to 4 lines.

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IEC/EN 61000-4-5, IEC/EN 61000-4-12,

ITU K.44

Coupling networks for unshielded, symmetrical (PCD 121/122) or unshielded asymmetrical signal lines (Combination and Ring Wave) or symmetrical signal lines with Ring Wave (PCD 126A)
Test of up to 4 lines simultaneously
Serial resistor

The PCDs 121, 122 and 126A are used for coupling of

different impulses onto unshielded (a)symmetrical data and signal lines according IEC/EN or ITU standards (see technical data). Up to 4 lines can be tested simultaneously. To achieve maximum flexibility, only coupling elements are included in the PCDs.

Decoupling circuits that depend on the EUT to be tested, can be placed separately in the test setup. Manual coupling path switching for common mode (longitudinal, line to ground) and differential mode (transverse, line to line) tests. Default coupling elements are gas arrestors and breakdown avalanche diodes. The coupling elements can be easily selected. The direct coupling output allows the customer to use his own coupling elements.

Manual selection of the coupling path
Safety banana plug, for maximum user safety
Signal bandwidth up to more than 10 MHz (with gas arresters as coupling elements)